US20080087449A1 - Handheld rotary tool - Google Patents
Handheld rotary tool Download PDFInfo
- Publication number
- US20080087449A1 US20080087449A1 US11/953,525 US95352507A US2008087449A1 US 20080087449 A1 US20080087449 A1 US 20080087449A1 US 95352507 A US95352507 A US 95352507A US 2008087449 A1 US2008087449 A1 US 2008087449A1
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- US
- United States
- Prior art keywords
- housing
- section
- tool
- body section
- lock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0028—Angular adjustment means between tool head and handle
Abstract
A rotary tool is provided with a head section that is selectively pivotable at a plurality of positions between an orientation where the head section is in-line with a body section to an orientation where the head section is perpendicular to the body section. The rotary tool can also swivel about an arc of 360 degrees.
Description
- This application is a divisional application of U.S. application Ser. No. 11/251,314, filed on Oct. 14, 2005, the entirety of which is hereby fully incorporated by reference herein.
- The present invention relates to power tools, and in particular to a rotary tool with a head section that can pivot with respect to the body of the tool. Additionally, the present invention relates to a rotary tool with a head section that can rotate with respect to the body section of the tool. The present invention also contemplates a rotary tool having a head section that can pivot and rotate with respect to the body section. The tool of the present invention improves on previous designs because it includes a head section that can pivot and/or rotate with respect to a body section with the motor positioned within the body section. Previous rotary tool designs included a motor that was located within the head section, which caused the head section to be significantly larger than the head section of the present invention, which limited the operability of the previous tools in tight spaces.
- The present invention provides a rotary tool operable in at least two positions. The rotary tool includes a transmission with an input end and an output end, a body section housing the input end of the transmission and a motor that is connected to the input end of the transmission. The body section includes a longitudinal axis. The rotary tool additionally includes a head section housing the output end of the transmission and a spindle that is connected to the output end of the transmission. The rotary tool also includes a lock to selectively retain the head section in a selected orientation with respect to the body section along a pivot axis, wherein the head section is capable of being retained substantially orthogonally to the longitudinal axis of the body section.
- The rotary tool may include a head section that can rotate, or swivel about the longitudinal axis of the body section. A body section is provided with a gearbox housing, a sleeve that surrounds a top portion of the gearbox housing and that moves axially along the gearbox housing. A rotatable cap surrounds the sleeve to selectively cause engagement of the sleeve and the gearbox housing. The head section is prevented from rotating with respect the body section when the sleeve engages the gearbox housing.
- Advantages of the present invention will become more apparent to those skilled in the art from the following description of the preferred embodiments of the invention that have been shown and described by way of illustration. As will be realized, the invention is capable of other and different embodiments, and its details are capable of modification in various respects. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
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FIG. 1 is a side view of one embodiment of the rotary tool, showing the head section of the tool in-line with the body section of the tool of the present invention. -
FIG. 2 is a side view of the tool ofFIG. 1 , with the head section perpendicular to the body section of the tool. -
FIG. 3 is an exploded view of the tool ofFIG. 1 , showing the components aligned with the head section in-line with the body section. -
FIG. 4 is an exploded view of the tool ofFIG. 2 . -
FIG. 5 is a cross-sectional view of the tool ofFIG. 1 , showing the components of the locking mechanism in the locked position. -
FIG. 6 is a cross-sectional viewFIG. 5 in the unlocked position. -
FIG. 7 is a perspective view of a second embodiment of the rotary tool of the present invention, showing the head section of the tool in-line with the body section of the tool. -
FIG. 8 is the view ofFIG. 7 , showing the head section of the tool perpendicular to the body section of the tool. -
FIG. 9 is a partial exploded view of the tool ofFIG. 7 . -
FIG. 9 a is a perspective view of the pivot housing. -
FIG. 9 b is a perspective view of the second housing cover. -
FIG. 10 is a side view of the pivot housing and the cover section when the head section of the tool is in-line with the body section of the tool. -
FIG. 11 is a side view of the pivot housing, cover section, and middle housing cover when the head section is in-line with the body section of the tool. -
FIG. 12 is a side view ofFIG. 10 , of the pivot housing and the cover section when the head section is at a first oblique angle with respect to the body section of the tool. -
FIG. 13 is a side view ofFIG. 11 , of the pivot housing, cover section, and middle housing cover when the head section is at a first oblique angle with respect to the body section. -
FIG. 14 is a side view ofFIG. 10 , of the pivot housing and the cover section when the head section is at a second oblique angle with respect to the body section. -
FIG. 15 is the view ofFIG. 11 , of the pivot housing, cover section, and middle housing cover when the head section is at a second oblique angle with respect to the body section. -
FIG. 16 is the view ofFIG. 10 , of the pivot housing and the cover section when the head section is perpendicular to the body section. -
FIG. 17 is the view ofFIG. 11 , of the pivot housing, cover section, and middle housing cover when the head section is perpendicular to the body section. -
FIG. 18 is a perspective view of an alternate embodiment of the pivot housing. -
FIG. 19 is a perspective view of tool ofFIG. 18 , with the lock button removed to show the head section in-line with the body section. -
FIG. 20 is the view ofFIG. 19 , showing the head section at a forty five degree angle with respect to the body section. -
FIG. 21 is the view ofFIG. 19 , showing the head section perpendicular to the body section. -
FIG. 22 is an exploded view of the a third embodiment of the handheld rotary tool. -
FIG. 23 is a perspective view of the tool ofFIG. 22 , showing the gearbox housing connected to the universal joint. -
FIG. 24 is a perspective view of the tool ofFIG. 22 , showing the lock housing. -
FIG. 25 is a perspective view of the tool ofFIG. 22 , showing the lock housing. -
FIG. 26 is a perspective view of the tool ofFIG. 22 , showing the upper swivel cap. -
FIG. 27 is a perspective view of an alternate embodiment of the pivot housing and the lock housing. - Referring now to
FIGS. 1-6 , a handheldpivotable tool 10 according to the present invention is shown. As an example, the handheldpivotable tool 10 can be a handheld drill or a handheld impact driver.FIGS. 3 and 4 are exploded views of the components of the handheldpivotable tool 10. The handheldpivotable tool 10 has ahead section 12 that rotatably moves an output tool or bit. Thehead section 12 can freely pivot about abody section 14 that is held by a user during operation. Thehead section 12 may be retained in one position where thelongitudinal axis 13 a of thehead section 12 is aligned along thelongitudinal axis 13 of thebody section 14. Thehead section 12 may also be selectively pivoted to positions other than aligned with thelongitudinal axis 13. Desirably, thehead section 12 can be pivoted about apivot axis 13 b (FIGS. 3 and 4 ) to a plurality of positions between an orientation where thehead section 12 is in-line with thebody section 14 and an orientation where thehead section 12 is orthogonal to thebody section 14. For example,FIG. 20 shows thehead section 12 at a 45 degree angle with respect to thebody section 14. In other embodiments, thehead section 12 can be retained at other angles with respect to thebody section 14. The handheldpivotable tool 10 is provided with alocking mechanism 19 to retain thehead section 12 in the selected position with respect to thebody section 14. - In embodiments where the handheld
pivotable tool 10 is an impact driver, the impact mechanism can either be located inside thebody section 14 behind an input end of the transmission oruniversal joint 80, or in thehead section 12 engaging with the output end of theuniversal joint 80 behind thespindle 124. - The pivotable handheld
pivotable tool 10 includes acarrier 20, agearbox housing 40, alock housing 60, auniversal joint 80, apivot housing 100, and aspindle lock housing 120. Thelocking mechanism 19 includes alock housing 60, apivot housing 100, ablock 108, and alock button 110.Apertures lock housing 60 and thepivot housing 100, respectively, receive thelock button 110 that retains theblock 108 within theapertures - The
body section 14 of thehandheld rotary tool 10 includes themotor 17, thegearbox 18, thecarrier 20, thegearbox housing 40, and thelock housing 60. Thebody section 14 also retains arear section 82 of theuniversal joint 80. In other embodiments, thehandheld rotary tool 10 can be formed without agearbox 18 such that theoutput spindle 124 rotates at the same angular velocity as themotor shaft 17 a. In these embodiments, theoutput shaft 17 a of themotor 17 engages directly with thecarrier 20, or similar structure known to those in the art to accept torque from a motor and transfer the torque to the remaining members of thehandheld rotary tool 10. In these embodiments, the tool is still formed with a structure similar to thegearbox housing 40. Specifically, the tool in these embodiments includes a structure that includes at least theshoulder 44 and theneck 46 of thegearbox housing 40 described herein including all of the structure that is discussed below that is a part of theshoulder 44 and theneck 46 of thegearbox housing 40. The term “gearbox housing” is used throughout the specification and claims for the sake of simplicity. It should be understood that the term “gearbox housing” is the name for the structure shown aselement 40, but should not be understood to require that thestructure 40 enclose and support a speed reduction gearbox nor that the use of a speed reduction gearbox is a required element of the embodiments or the claims. - It is contemplated to provide a control mechanism within the body section to allow the user to control the output torque of the handheld
pivotable tool 10. For example, as shown inFIG. 1 , a clutch 16 is included in thebody section 14 between thegearbox housing 40 and thelock housing 60 to control the transfer of torque between thegear train 18 and thecarrier 20. - The
head section 12 includes apivot housing 100 and aspindle lock housing 120, which supports a spindle lock mechanism (not shown). Thespindle lock housing 120 receives afront section 92 of theuniversal joint 80. Thespindle lock housing 120 further includes anoutput spindle 124 with a hexagonal collet to accept an output tool (not shown). As is discussed in detail below, thehead section 12 is maintained in a selected position with respect to thebody section 14 with a connection between thelock housing 60 and thepivot housing 100. The head section further includes abearing 130, which is mounted on thefront section 92 of theuniversal joint 80, discussed below. - The
carrier 20 is provided within thebody section 14 and is enclosed within the gearbox housing 40 (along with portions of the gear train 18). Thecarrier 20 is disc-shaped with a plurality ofposts 22 extending from the rear surface of the discs and ahollow cylinder 24 extending from the front surface. Each of theposts 22 are preferably inserted into a center aperture of aplanet gear 18 a that is included within aplanetary gear train 18. Therefore, thecarrier 20 rotates along with the rotation of the planet gears, which rotate about aninternal sun gear 18 b, normally attached to anoutput shaft 17 a of amotor 17. Theplanetary gear train 18 may include multiple stages. Therefore, thecarrier 20 rotates within thebody section 14 based on the rotation of themotor 17. Thecarrier 20 is retained within abody section 42 of thegearbox housing 40, with the front surface of the carrier located in close vicinity to the rear surface of thebody section 42. When thecarrier 20 is in this position, thehollow cylinder 24 extends into ashoulder portion 44 of thegearbox housing 40. - The
hollow cylinder 24 of thecarrier 20 is formed with anaperture 25 through which therear end 83 of therear section 82 of theuniversal joint 80 is inserted. Preferably, theaperture 25 andrear section 82 are formed to prohibit relative rotation between the two when theend 83 of therear section 82 is inserted into theaperture 25. Theaperture 25 and theend 83 of therear section 82 may have complementary shapes. In some embodiments, therear end 83 and theaperture 25 are each formed as a “D” or a similar shape to prevent relative rotation between theuniversal joint 80 andcarrier 20. Upstream of thecarrier 20, therear section 82 of theuniversal joint 80 is rotationally supported by aneedle roller bearing 26 that is housed within theshoulder portion 44 of thegearbox housing 40. Additionally, therear section 82 of the universal joint 80 can be rotationally supported by abushing 27. The universal joint 80 therefore accepts the torque transferred to thecarrier 20 by themotor 17 and thegear train 18 and allows the torque to be transferred to thehead section 12. - The
gearbox housing 40 is formed from three sections, thebody section 42, theshoulder 44, and theneck 46. Thebody section 42 is formed with the largest circumference and is formed to house or at least partially enclose the front end of themotor 17, thegear train 18, and thecarrier 20, with thehollow cylinder 24 of thecarrier 20 extending into theshoulder 44. - The
neck 46 of thegearbox housing 40 extends from the front end of theshoulder 44 along the same axis as theshoulder 44 andbody section 42. Therear section 82 of the universal joint extends from its connection with the carrier within theshoulder 44 into theneck 46. Theneck 46 preferably includes aU-shaped cutout 48 formed along one side of theneck 46 that extends from the forward surface of theneck 46 toward, but not reaching, theshoulder 44. Theuniversal joint 80 is positioned with respect to theneck 46 such that acenter section 88 of the universal joint 80 pivots from a position where thecenter section 88 is in line with therear section 82 of the universal joint 80 to a position where thecenter section 88 is at an oblique angle with respect to therear section 82. When thecenter section 88 is not positioned along the same line as therear section 82, thecenter section 88 extends through theU-shaped cutout 48. In other embodiments, other structures to movably support therear section 83 of the universal joint 80 may be used. - The
neck 46 additionally includes two throughholes 50 that are along the same axis on the walls of theneck 46. Theholes 50 are positioned to accept apress fit connector 54 with thelock housing 60 to mount thelock housing 60 onto theneck 46, which prevents any relative motion between thelock housing 60 and thegearbox housing 40. When thelock housing 60 is connected to the neck, the bottom surface of thelock housing 60 rests on aledge 45 between the shoulder and theneck 46. - The
lock housing 60 includes aU-shaped aperture 64 that is substantially the same shape and in the same location as theU-shaped aperture 48 in theneck 46. Similar to theU-shaped aperture 48 in thegearbox housing 40, theU-shaped aperture 64 in thelock housing 60 provides an opening to allow thecenter section 88 of the universal joint 80 to extend through the circumference of thelock housing 60. Thelock housing 60 also includes around projection 66 that extends from the outer circumference of thelock housing 60. Theprojection 66 has a centerline that is perpendicular to a plane that bisects theU-shaped aperture 64. Preferably, the centerline of theprojection 66 is along thepivot axis 13 b that thehead section 12 pivots with respect to thebody section 14. Theprojection 66 includes a recess 68 (or aperture) that blindly extends into theprojection 66. Therecess 68 has a shape to receive a portion of theblock 108, as further described below. Thelock housing 60 has asecond projection 70 that extends along the same axis as theprojection 66 and extends from the opposite external surface of thelock housing 60. Thesecond projection 70 is round and is preferably the same height as theprojection 66. - In other embodiments, the
lock housing 60 can be formed integral with thegearbox housing 40. In this embodiment, theneck 46 of thegearbox housing 40 is formed in the shape of thelock housing 60, including theprojection 66 with therecess 68 and the oppositesecond projection 70. In embodiments where thegearbox housing 40 also forms thelock housing 60, theU-shaped aperture 48 in theneck 46 is integral with theU-shaped aperture 64 in the lock housing. - As noted above, the
universal joint 80 includes three sections, arear section 82, acenter section 88, and afront section 92. Therear section 82 is mounted to thecarrier 20 with anend 83 having a shape complementary to theaperture 25 in thecarrier 20 to cause therear section 82 to rotate with the rotation of thecarrier 20. Each of thesections pins 85 and a center hub (not shown). Thepins 85 and the center hub allow the transfer of torque from therear section 82 to thecenter section 88, and from thecenter section 88 to thefront section 92, so thefront section 92 rotates when therear section 82 rotates. Thepins 85 and the center hub also allow relative pivoting with respect to each of the sections. While therear section 82 is constrained from pivoting with respect to thebody section 14 by the connection between therear section 82 and thecarrier 20, thecenter section 88 can pivot with respect to therear section 82. Similarly, thefront section 92 can pivot with respect to thecenter section 88. Also, as discussed above, the U-shaped apertures in theneck 46 of thegearbox housing 40 and the lock housing 60 (48, 64) permit clearance for thecenter section 88 and thefront section 92 to pivot within the tool. This pivoting motion of the center andfront sections head section 12 to pivot with respect to thebody section 14 along thepivot axis 13 b. - The
front section 92 of the universal joint 80 may be integrally formed with aspindle lock housing 120 or the two components may be formed separately and attached together by structure that is known to those of skill in the art. Thespindle lock housing 120 is rotatably supported by abearing 130 that is mounted within thepivot housing 100. - As best seen in
FIG. 3 , thepivot housing 100 is formed from at least two clamshell halves. Thepivot housing 100 surrounds the rear portion 126 of thespindle lock housing 120, as well as theuniversal joint 80, thelock housing 60, and a portion of theneck 46 of thegearbox housing 40. When assembled, in this embodiment, thepivot housing 100 is generally cylindrical, with a removedsection 102 that corresponds to theU-shaped apertures neck 46 and lockhousing 60, respectively. The removedsection 102 provides clearance between thepivot housing 100 and the components that form thebody section 14 so that thehead section 12 can pivot with respect to thebody section 14. - The
pivot housing 100 includes a recessedsection 104 along an outer surface of thepivot housing 100. The recessedsection 104 may have any suitable shape, but in one embodiment, it is circular. A centerline of the recessedsection 104 is perpendicular to a plane that bisects the removedsection 102. Preferably, the centerline of the recessedsection 104 is positioned co-linear with thepivot axis 13 b when thepivot housing 100 is positioned with respect to thelock housing 60. Anaperture 106 is formed in the recessedsection 104 with the center of theaperture 106 being along the centerline of the recessedsection 104. In some embodiments (shown inFIGS. 3 and 4 ), theaperture 106 is formed in a cross shape, with fourlegs 107 radiating from the centerline and perpendicular to each other. In other embodiments (shown inFIGS. 18-21 ) theaperture 106 is formed with eightlegs 107 radiating from the centerline and at a forty-five degree angle from the neighboringlegs 107. In either embodiment, thelegs 107 may have the same length. The recessedsection 104 further includes a plurality ofholes 112 along the periphery of theaperture 106. Theholes 112 may be rectangular. - In another embodiment shown in
FIG. 27 , theaperture 106 may be replaced with anarcuate track 106 a with a center point of thearcuate track 106 a located at thepivot axis 13 b. In this embodiment, therecess 68 on thelock housing 60 is formed at the same distance R from thepivot axis 13 b as the radius R of thearcuate track 106 a, such that therecess 68 is in line with thetrack 106 a throughout the range of motion of thehead section 12 with respect to thebody section 14. - It is contemplated that the aperture can be formed with a structure other than four or more legs. Desirably, the aperture will have a shape complementary to the shape of the
lock block 108, as described below and also will have a shape to permit a plurality of selective discrete orientations of thehead section 12 with respect to thebody section 14. In other embodiments of thelock block 108, theaperture 106, and therecess 68 can be formed of alternate, non-circular, shapes such that when thelock block 108 engages both theaperture 106 and therecess 68, thehead section 12 cannot pivot with respect to thebody section 14. For example, thelock block 108,aperture 106, and therecess 68 can each be formed as a square, a triangle, a pentagon, a hexagon, etc. - The
pivot housing 100 additionally includes a hollow,circular projection 118 that extends from the inner surface of thepivot housing 100 toward the centerline of thepivot housing 100. Thecircular projection 118 extends along the same centerline as theaperture 106 and is formed with an inner diameter slightly larger than thesecond projection 70 that extends from thelock housing 60. When thepivot housing 100 is assembled to surround thelock housing 60, the connection between thesecond projection 70 of thelock housing 60 and thecircular projection 118 of thepivot housing 100 provides a stable rotational connection between thepivot housing 100 and thelock housing 60. - As best shown in
FIG. 3 , alock block 108 is provided with a shape complementary to that ofrecess 68 of thelock housing 60. In one embodiment, thelock block 108 is formed as a cross, or a plus symbol (+), with fourarms 109 that extend from the center of thelock block 108 and are perpendicular to each other. The height of thelock block 108 is slightly smaller than the length of theprojection 68 from thelock housing 60 and is the same depth as therecess 68 of thelock housing 60. When the handheldpivotable tool 10 is assembled, thelock block 108 is inserted into theaperture 106 of thepivot housing 100 and further into therecess 68 of thelock housing 60. A spring 116 (FIGS. 5 and 6 ) is provided between the bottom of therecess 68 in thelock housing 60 and the bottom of thelock block 108, to bias the lock block 108 upwards away from the bottom of therecess 68 in thelock housing 60. - Normally, as shown in
FIG. 5 , thespring 116 biases thelock block 108 into a position where the top portion of thelock block 108 extends into theaperture 106 within thepivot housing 100 and the bottom portion of thelock block 108 extends into therecess 68 within thepivot housing 60. In this situation, thepivot housing 100 cannot rotate or move with respect to thelock housing 60 because thearms 109 of thelock block 108 are inserted within the four of the mutuallyperpendicular legs 107 of theaperture 106 in thepivot housing 100, as well as within thelegs 69 of therecess 68 of thelock housing 60. - In the embodiments shown in
FIGS. 3 and 4 , with across-shaped aperture 106 on thepivot housing 100, the pivot housing 100 (and output tool) can be retained in a position where it is along the same line as thebody section 14 of the handheld pivotable tool 10 (FIG. 3 ) and in a position where the pivot section 100 (and output tool) is perpendicular to thebody section 14 of the handheld pivotable tool 10 (FIG. 4 ). In the embodiments shown inFIGS. 18-21 , theaperture 106 in the pivot housing is formed with eightlegs 107, the pivot housing 100 (and output tool) can be retained in a position where thepivot housing 100 is either along the same line as the body section 14 (FIG. 19 ), at a forty-five degree angle to the body section 14 (FIG. 20 ), or perpendicular to the body section 14 (FIG. 21 ). - The
lock block 108 is moveably retained in its position inserted within at least therecess 68 of the lock housing (and when biased upward by thespring 116 within theaperture 106 of the pivot housing) by alock button 110. Thelock button 110 includes acenter projection 110 a (best shown inFIGS. 5 and 6 ) that is sized to fit within the center of theaperture 106 in thepivot housing 100. Thelock button 110 also includes a plurality oflegs 111 that extend in the same direction as thecenter projection 110 a that are inserted into the plurality ofapertures 112 in the recessedsection 104 of thepivot housing 100. Thelegs 111 each preferably include outwardly facingtabs 111 a that maintain thelegs 111 inserted within theapertures 112. - Normally, as shown in
FIG. 5 , when no inward force is applied to thebutton 110, the biasing force of thespring 116 pushes thelock block 108 outward to contact thecenter projection 110 a of thelock button 110. As discussed above, in this position, thelock block 108 extends within theaperture 106 in thepivot housing 100 and therecess 68 in thelock housing 60, to prevent relative motion between thehead section 12 and thebody section 14. As shown inFIG. 6 , when thelock button 110 is pushed inward, thecenter projection 110 a urges thelock block 108 inward against the biasing force of thespring 116 until it no longer is inserted within theaperture 106 in thepivot housing 100. In this orientation, the pivot housing 100 (and the head section 12) is free to pivot with respect to thebody section 14 of the handheldpivotable tool 10. When thelock button 110 is released, thespring 116 urges the lock block 108 (and the lock button 110) outward until the lock block 108 again is inserted within theaperture 106 in thepivot housing 100 to retain thepivot housing 100 andhead section 12 in the selected position with respect to thebody section 14. - If the
pivot housing 100 is not either in-line, at a forty-five degree angle (in embodiments shown inFIGS. 18-21 ), or perpendicular with respect to thebody section 14 thelock block 108 will not enter theaperture 106 in the pivot housing due to the specific shapes of thelock block 108 andaperture 106 in thepivot housing 100. The tool can be pivoted until it reaches one of these positions to allow thelock block 108 to again move into theaperture 106. - In the embodiment shown in
FIG. 27 , and as partially discussed above, anarcuate slot 106 a is provided instead of theaperture 106 on thepivot housing 100, and thelock button 110 is formed withlegs 111 that ride withintracks 113 in thepivot housing 100. Thelock button 110 has a projection (not shown inFIG. 27 but similar to theprojection 110 a shown inFIGS. 5 and 6 ) that engages the top portion of thelock block 108. Thelock block 108 is sized so that it can be inserted intoenlarged portions 106 b at predetermined positions on thearcuate slot 106 a (i.e. positions where thehead section 12 will be retained with respect to the body section 14).FIG. 27 shows theenlarged portions 106 b formed at the extreme ends of thearcuate slot 106 a. In other embodiments, thearcuate slot 106 a can includeenlarged portions 106 b at other positions within thearcuate slot 106 a. To change the orientation of thehead section 12 with respect to thebody section 14, thelock button 110 is pressed against the biasing force of thespring 116, so that thelock block 108 moves out of engagement with thearcuate slot 106 a, to allow thehead section 12 to be pivoted with respect to the body section. When the tool is in the required orientation, thelock button 110 is released and the lock block again engages thearcuate slot 106 a within the pivot housing to retain the tool in the selected orientation. - A second embodiment of the handheld
pivotable tool 10 is shown inFIGS. 7-17 . This handheldpivotable tool 10 includes all of the structure discussed in the embodiment shown inFIGS. 1-6 (and 18-21) above, including the structure that encloses and protects the internal components of thelock housing 60,pivot housing 100, and universal joint 80 throughout the range of motion of thehead section 12 with respect to thebody section 14. This embodiment however, includes asecond housing cover 140 and acover piece 160. The embodiments shown inFIGS. 7-17 include apivot housing 100 that has a spherical profile, instead of thecylindrical pivot housing 100 shown inFIGS. 1-6 . The structure disclosed below can be modified to include thesecond housing cover 140 and coverpiece 160 in embodiments where thepivot housing 100 has a cylindrical profile. Similarly, the embodiments shown inFIGS. 1-6 and discussed above can be modified to form thepivot housing 100 with a spherical profile, as shown inFIGS. 18-21 . - The
second housing cover 140 is formed from two clamshell halves (a slottedpiece 142 and a unslotted piece 144) that are connected together to surround a majority of thelock housing 60 and allow the motion of the universal joint 80 discussed above for thehead section 12 to pivot with respect to thebody section 14. Thesecond housing cover 140 is surrounded by thepivot housing 100. The clamshell halves of thesecond housing cover 140 are connected along a plane that is perpendicular to the plane formed by the edges of the clamshell halves of the pivot housing, and also extends through a centerline of thebody section 14 of the handheldpivotable tool 10. - As best seen in
FIG. 9 , thesecond housing cover 140 forms twocircular holes second housing cover 140. Theholes projections lock housing 60 to extend through. Thesecond housing cover 140 further includes abottom aperture 148 a, which is sized to allow thesecond housing cover 140 to surround thelock housing 60 and a top aperture 148 b. The top aperture 148 b is sized to allow thesecond housing cover 140 to surround thelock housing 60, and also to allow the universal joint 80 to pivot with respect to thebody section 14. - The
cover section 160 is formed as a curved plate and is inserted between thesecond housing cover 140 and thepivot housing 100 to cover any exposed regions of either thelock housing 60 or the universal joint 80 during the range of motion of the handheldpivotable tool 10. The motion of thecover section 160 is constrained by the internal structure of thepivot housing 100 and the external structure of thesecond housing cover 140. Specifically, as shown inFIG. 9 a, thepivot housing 100 is formed withinterior sidewalls 208 that are formed with anarcuate slot 210. Thearcuate slot 210 has an arc length greater than the ninety degree range of motion of thehead section 12 of the tool. Theslot 210 includes afirst face 212 and asecond face 214. (The opposite clamshell half of thepivot housing 100 has a similar arcuate slot with a first and second face, not shown). When the handheldpivotable tool 10 is assembled, thecover section 160 rides within thearcuate slot 210 and its range of motion is partially determined by the positions of thefirst face 212 and thesecond face 214. - The slotted
piece 142 of thesecond housing cover 140 includes a pair oftop faces 152 and a pair of bottom faces 154 (best shown inFIG. 9 b). The top and bottom faces 152, 154 are formed at the intersection between a top andbottom section piece 142 contacts the edge of the unslotted piece 144. The top andbottom sections pivotable tool 10 is assembled, thecover piece 160 rides on themiddle section 147 of the slottedpiece 142 of thesecond housing cover 140 the range of motion of thecover section 160 is also determined by the top and bottom faces 152, 154 of thesecond housing cover 140. -
FIG. 10 shows thecover section 160 positioned within thepivot housing 100 when thehead section 12 is in-line with thebody section 14.FIG. 11 shows thecover section 160 assembled with thesecond housing cover 140 and thepivot housing 100 in the same position. As seen inFIG. 10 , thebottom edge 164 of thecover section 160 contacts thefirst face 212 of thepivot housing 100. As seen inFIG. 11 , thetop edge 165 of thecover section 160 contacts thetop face 152 of thesecond housing cover 140. These contact points retain thecover section 160 in the required position to protect the internal components of the handheldpivotable tool 10. -
FIG. 12 shows thecover section 160 with respect to thepivot housing 100 whenhead section 12 is pivoted to an intermediate position between a position where thehead section 12 is in-line with thebody section 14 and a position where they are perpendicular to each other.FIG. 13 shows thecover section 160 with respect to thesecond housing cover 140 and thepivot housing 100 in the same orientation. In intermediate orientations of thehead section 12 with respect to thebody section 14, thecover section 160 does not contact either the first orsecond faces pivot housing 100 or the top or bottom faces 152, 154 of thesecond housing cover 140. Therefore, thecover section 160 is free to move with respect to both thesecond housing cover 140 and thepivot housing 100 as constrained by the faces, and thecover section 160 will cover the internal components of the handheldpivotable tool 10 regardless of the position of thecover section 160. -
FIG. 14 shows thecover section 160 with respect to thepivot housing 100 when thehead section 12 is at an approximate 65 degree angle with respect to thebody section 14.FIG. 15 shows thecover section 160 with respect to thesecond housing cover 140 and thepivot housing 100 in the same orientation. As shown inFIG. 14 , thetop edge 165 of thecover section 160 contacts thesecond face 214 of thearcuate slot 210 of thepivot housing 100. As shown inFIG. 15 , neither the top nor thebottom edges cover section 160 contacts the top or bottom faces 152, 154 of thesecond housing cover 140. Therefore, with additional pivoting of thehead section 12 with respect to thebody section 14, thecover section 160 will move counter-clockwise (as seen in the view ofFIG. 14 ) closer to the position where itsbottom edge 164 engages thebottom face 154 of thesecond housing cover 140. -
FIG. 16 shows thecover section 160 with respect to thepivot housing 100 when thehead section 12 is perpendicular to thebody section 14.FIG. 17 shows thecover section 160 with respect to thesecond housing cover 140 and thepivot housing 100 in the same orientation. As shown inFIG. 17 thebottom edge 164 of thecover section 160 is engaged with thebottom face 154 of thesecond housing cover 140. - A third embodiment of the handheld
pivotable tool 10 is shown inFIGS. 22-26 . In this embodiment, thehead section 12 rotates with respect to the longitudinal axis of thebody section 14. The position of the spindle lock housing (not shown inFIGS. 22-26 , the spindle lock housing in this embodiment is similar to that shown in described in previous embodiments) and thepivot housing 100, however can be modified (as shown inFIG. 22 ) so the output shaft is offset from the center of thepivot housing 100 because of the formation of the universal joint 80 with three sections. This offset positioning allows the output tool (not shown) to be operated in tight spaces. For example, because the spindle is positioned closer to one outside surface of thehead section 12, the handheldpivotable tool 10 can be operated to drill a hole or insert a fastener located closer to a wall than would be possible if the spindle was positioned at the center of thepivot housing 100. - In this embodiment, the
gearbox housing 40 is formed as a separate member from thelock housing 60. Thegearbox housing 40 is slightly altered as discussed herein (although it is modified in a way that will not hinder performance of the embodiments discussed above). As shown inFIG. 23 , thetop surface 45 of theshoulder 44 includes a plurality offlanges 324 that project upwards into theneck 46 of thegearbox housing 40. Theflanges 324 may be equally spaced around the circumference of thegearbox housing 40. Preferably, thegearbox housing 40 includes fourflanges 324 spaced ninety degrees apart. In some embodiments, theflanges 324 can be formed as rectangular blocks, in other embodiments, theflanges 324 can be formed as different shapes. Theshoulder 44 also includes twogrooves 352 around the circumference of theshoulder 44 that accept two retainingrings 350, which are discussed below. - The
lock housing 60 is also slightly modified from the structure discussed above (although it is modified in a way that will not hinder performance of the embodiments discussed above). In embodiments that do not include structure to allow thehead section 12 to pivot with respect to thebody section 14, a cylindrical sleeve is provided that surrounds theneck 46 of thegearbox housing 40 and can move axially about thegearbox housing 40. This sleeve is formed with the structure of thelock housing 60 disclosed specifically with this embodiment. For simplicity, only thelock housing 60 is discussed here (and shown in the figures), but the reference to thelock housing 60 should be interpreted to also refer to a sleeve with the specific structure discussed herein. - The
lock housing 60 includes a cam surface 310 (best shown inFIG. 25 ) formed around the outer surface of thelock housing 60. Thecam surface 310 is formed as an inclined plane that wraps around a substantial portion of the circumference of thelock housing 60 starting at the bottom edge. As shown inFIG. 24 , thelock housing 60 also includes a plurality ofrecesses 316 formed on the bottom edge. Desirably, therecesses 316 are equally spaced at uniform positions around the inner circumference of thelock housing 60. Therecesses 316 are sized and positioned to engage theflanges 324 when thelock housing 60 engages the upper surface of theshoulder 44 of thegearbox housing 40. In one embodiment, thelock housing 60 includes twice the number ofrecesses 316 than the number offlanges 324 formed in thegearbox housing 40. In other embodiments, thelock housing 60 can have the same number ofrecesses 316 asflanges 324, or a greater number ofrecesses 316 toflanges 324. - The handheld
pivotable tool 10 also includes aswivel cap 330 formed from anupper cap 342 and alower cap 332, as best seen inFIG. 22 . Theswivel cap 330 is rotatably connected to theshoulder 44 of thegearbox housing 40 with two retainingrings 350 placed above and below thelower cap 332 and tightened to engage each of thegrooves 352 in theshoulder 44. As shown inFIG. 26 , theupper cap 342 has acam surface 344 that opposes thecam surface 310 on thelock housing 60. Thecam surface 344 of theupper cap 342 is formed on the lower surface of theupper cap 342. - When the handheld
pivotable tool 10 is assembled, theupper cap 342 is positioned such that it is above thecam surface 310 of thelock housing 60, which allows thecam surface 344 on the upper cap to engage thecam surface 310 on thelock housing 60. The upper andlower caps respective caps upper cap 342 and thelock housing 60 are positioned with respect to thegearbox housing 40.FIGS. 7-9 show the upper and lower swivel caps 342, 332 positioned on thehandheld rotary tool 10 with respect to thelock housing 60 and thegearbox housing 40. A spring 336 (best seen inFIG. 22 ) is provided within theswivel cap 330 between thelower cap 332 and thelower surface 315 of thelock housing 60 to push the lock housing upwards away from thelower cap 332. - In operation, rotation of the
swivel cap 330 moves thelock housing 60 with respect to thegearbox housing 40. For example, when the swivel cap is rotated clockwise thecam surface 344 of theupper cap 342 engages thecam surface 310 of the lock housing, which forces thelock housing 60 downward against the biasing force of thespring 336. With sufficient clockwise rotation, thelock housing 60 is moved far enough downward so that theflanges 324 of thegearbox housing 40 are inserted into therecesses 316 of the lock housing. Because theflanges 324 are positioned within therecesses 316, thelock housing 60 and thehead section 12 are selectively positioned and cannot rotate with respect to thebody section 14. - When the
swivel cap 330 is rotated in the counter-clockwise direction with respect to thebody section 14, thelock housing 60 moves upward due to the biasing force of the spring and releases the engagement between the cam surfaces 310, 344. The upward movement of thelock housing 60 causes theflanges 324 to disengage therecesses 316 of thelock housing 60, so that thelock housing 60 and thehead section 12 can rotate with respect to thebody section 14. When thehead section 12 is in the desired orientation with respect to thebody section 14, theswivel cap 330 is rotated clockwise to engage theflanges 324 with therecesses 316 in the lock housing, which prevents rotation of thehead section 12 with respect to thebody section 14. - Alternatively, other structures that are known to those of skill in the art can be used to selectively secure the
lock housing 60 to thegearbox housing 40 to prevent thehead section 12 from rotating with respect to thebody section 14 when thehead section 12 is in a position selected by the user. - Each of the embodiments discussed above may include a clutch 16 that allows the maximum output torque of the torque to be selected by the user. Clutch designs that are known by those of skill in the art may be used in conjunction with these embodiments to allow selection of a maximum output torque of the tool. Additionally, a suitable clutch design, for use with the handheld
pivotable tool 10 is described in U.S. Ser. No. 11/090,947, which is fully incorporated herein by reference. - It is therefore intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that it is the following claims, including all equivalents, that are intended to define the spirit and scope of this invention.
Claims (10)
1-23. (canceled)
24. A tool with a rotatable head section comprising:
(a) a transmission with an input end connected to a rotating member and an output end connected to an output tool;
(b) a body section that retains an input end of the transmission and includes a gearbox housing and a longitudinal axis;
(c) a sleeve that surrounds a top portion of the gearbox housing and is movable along the gearbox housing;
(d) a rotatable cap surrounding the sleeve to selectively cause engagement of the sleeve and the gearbox housing;
(e) a head section that houses an output of the transmission, and that is rotatable about the body section along the longitudinal axis of the body section, wherein the head section is prevented from rotating with respect to the body section when the sleeve engages the gearbox housing.
25. The tool of claim 24 further comprising a plurality of flanges that project from the gearbox housing.
26. The tool of claim 25 wherein the sleeve includes a plurality of recesses that accept the plurality of flanges to cause engagement of the sleeve and the gearbox housing.
27. The tool of claim 26 wherein the number of the plurality of recesses is the same as the number of flanges.
28. The tool of claim 25 wherein the number of the plurality of recesses is a positive multiple of the number of flanges.
29. The tool of claim 24 further comprising a cam surface at a bottom end of the sleeve and a corresponding cam surface on the rotatable cap.
30. The tool of claim 24 further comprising:
(a) a plurality of flanges that project from the gearbox housing;
(b) a plurality of recesses provided on a bottom surface of the sleeve to accept the plurality flanges;
(c) a cam surface at the bottom end of the sleeve; and
(d) a cam surface on the rotatable cap, wherein the cap can be rotated to cause engagement between the cam surfaces to cause the recesses in the sleeve to engage the flanges in the gearbox housing.
31. The tool of claim 30 wherein the sleeve is biased away from engagement with the gearbox housing.
32. A tool operable in at least two positions comprising:
(a) a transmission with an input end and an output end;
(b) a body section with a longitudinal axis including:
(i) a gearbox housing,
(ii) a lock housing that surrounds a top portion of the gearbox housing and that can move along the gearbox housing,
(iii) a motor,
(iv) a rotatable cap surrounding a bottom portion of the lock housing to selectively cause engagement between the lock housing and the gearbox housing;
(c) a head section rotatably connected to the body section to rotate about the longitudinal axis of the body section, with the head section being prevented from rotating with respect to the body section when the lock housing engages the gearbox housing;
(d) a pivot housing disposed between the head section and the body section and being pivotably connected to the lock housing about a pivot axis, wherein each of the pivot housing and the lock housing include an aperture; and
(e) a block positioned in the lock housing aperture and selectively inserted in the pivot housing aperture to retain the head section in a selected orientation with respect to the body section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/953,525 US20080087449A1 (en) | 2005-10-14 | 2007-12-10 | Handheld rotary tool |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/251,314 US20070084616A1 (en) | 2005-10-14 | 2005-10-14 | Handheld rotary tool |
US11/953,525 US20080087449A1 (en) | 2005-10-14 | 2007-12-10 | Handheld rotary tool |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/251,314 Division US20070084616A1 (en) | 2005-10-14 | 2005-10-14 | Handheld rotary tool |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080087449A1 true US20080087449A1 (en) | 2008-04-17 |
Family
ID=37628488
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/251,314 Abandoned US20070084616A1 (en) | 2005-10-14 | 2005-10-14 | Handheld rotary tool |
US11/953,525 Abandoned US20080087449A1 (en) | 2005-10-14 | 2007-12-10 | Handheld rotary tool |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/251,314 Abandoned US20070084616A1 (en) | 2005-10-14 | 2005-10-14 | Handheld rotary tool |
Country Status (5)
Country | Link |
---|---|
US (2) | US20070084616A1 (en) |
EP (2) | EP2260981A1 (en) |
CN (1) | CN1947957A (en) |
AU (1) | AU2006225210A1 (en) |
CA (1) | CA2561989A1 (en) |
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US20080142237A1 (en) * | 2006-12-14 | 2008-06-19 | Rudolf Fuchs | Impact drill |
US7654339B2 (en) * | 2006-12-14 | 2010-02-02 | Robert Bosch Gmbh | Impact drill with swivel device |
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US20110108298A1 (en) * | 2009-11-06 | 2011-05-12 | Chervon Limited | Auto hammer |
US8783378B2 (en) | 2009-11-06 | 2014-07-22 | Chervon Limited | Auto hammer |
US20110147027A1 (en) * | 2009-12-18 | 2011-06-23 | Jens Blum | Hand-held power tool device |
US8939232B2 (en) * | 2009-12-18 | 2015-01-27 | Robert Bosch Gmbh | Hand-held power tool device |
US9751204B2 (en) | 2009-12-18 | 2017-09-05 | Robert Bosch Gmbh | Hand-held power tool device |
US20110209888A1 (en) * | 2010-02-27 | 2011-09-01 | C Enterprise (Hk) Limited | Hand-held oscillatory power tool with two-axis tool mounting |
US9038745B2 (en) | 2010-12-20 | 2015-05-26 | Brigham Young University | Hand power tool and drive train |
JP2014065129A (en) * | 2012-09-26 | 2014-04-17 | Hitachi Koki Co Ltd | Power tool |
Also Published As
Publication number | Publication date |
---|---|
EP1775075A2 (en) | 2007-04-18 |
CA2561989A1 (en) | 2007-04-14 |
EP2260981A1 (en) | 2010-12-15 |
US20070084616A1 (en) | 2007-04-19 |
CN1947957A (en) | 2007-04-18 |
AU2006225210A1 (en) | 2007-05-03 |
EP1775075B1 (en) | 2012-12-26 |
EP1775075A3 (en) | 2008-03-12 |
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