CN1939660B - Electric tool - Google Patents
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- CN1939660B CN1939660B CN2006101533899A CN200610153389A CN1939660B CN 1939660 B CN1939660 B CN 1939660B CN 2006101533899 A CN2006101533899 A CN 2006101533899A CN 200610153389 A CN200610153389 A CN 200610153389A CN 1939660 B CN1939660 B CN 1939660B
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Abstract
An electric tool (reciprocating saw for example) is composed of casing, motor, drive axle, guide sleeve, reciprocating rod, balance block, the first swinging rod module on said drive axle for driving reciprocating rod, and the second swinging rod for driving balance block to reciprocate.
Description
Technical field
The present invention relates to a kind of electric tool, especially a kind of fork reciprocating saw, comprise housing, be arranged at the motor in the described housing, the power transmission shaft that connects with described motor, be arranged at the reciprocating lever of the instrument that is equipped with in the described housing, install or be connected and drive described reciprocating lever on the described power transmission shaft along predetermined axial line reciprocating first oscillating bar assembly of approximately linear at least on linear track, be arranged in the described housing and the balance weight reciprocating, install or be connected second oscillating bar assembly that drives described balance weight on the described power transmission shaft with respect to described housing.
Background technology
Traditional fork reciprocating saw has fairlead, and first oscillating bar assembly that is sheathed on the reciprocating lever in the fairlead and drives reciprocating lever is set in balance weight on the fairlead and second oscillating bar assembly of driven equilibrium piece.The U.S.'s No. 5025562 patent of bulletin patent just disclosed a kind of like this fork reciprocating saw, and the balance weight of fork reciprocating saw is arranged on the fairlead, and reciprocating lever is arranged in the fairlead.Or the coincidence parallel of the movement locus of balance weight with the movement locus of reciprocating lever.In this traditional reciprocating saw, mating surface is many, and friction area is big.Above-mentioned mating surface needs fine finishining, and each parts need accurately assembling, cause manufacturing cost higher.Simultaneously, friction area causes producing heat greatly.
Summary of the invention
The object of the present invention is to provide a kind of electric tool that effectively still has less friction area of the above-mentioned type.
According to the present invention, the electric tool of the above-mentioned type is characterised in that: balance weight can pivot with respect to housing around pivot axis, thereby realize moving back and forth for rotation moves back and forth, pivot axis is arranged on perpendicular to fixing in the plane of predetermined axial line and with respect to housing.
The invention has the beneficial effects as follows: balance weight is pivotally connected in housing, thereby does not have the large-area friction of big stroke basically.If the fairlead reciprocating lever that leads must be set, balance weight is towards not hindering fairlead when deviating from the instrument nose motion.Because the set-up mode of above-mentioned balance weight, described instrument be not vibration basically.This structure has improved the stability of instrument, and the assembly cost of balance weight and fairlead is lower.
In an embodiment, provide a kind of electric tool, comprised housing, motor is with the power transmission shaft that motor connects, reciprocating lever and balance weight.One driving element with angle radially is installed on the power transmission shaft, and driving element drives the reciprocating lever straight reciprocating motion with first oscillating bar assembly, and driving element moves back and forth with the second oscillating bar assembly driven equilibrium piece.Balance weight is pivotally connected in housing.The second oscillating bar assembly driven equilibrium piece centers on pivot with respect to the housing reciprocally swinging, thereby the straight path of the swinging track of balance weight and reciprocating lever is crossing, or balance weight is swung in the plane that is parallel to or comprises the reciprocating lever longitudinal axis.
Described electric tool comprises the fairlead that is set on the reciprocating lever, and reciprocating lever slides in fairlead.Balance weight is swung with respect to fairlead.Reciprocating lever comprises and connects the anterior of blade and be connected rear portion on this front portion.First groove is arranged on the fairlead and extends along the longitudinal axis of fairlead.Correspondence is provided with a protuberance at the rear portion of reciprocating lever, and protuberance slides in first groove along the longitudinal axis of reciprocating lever.Second groove is arranged on the fairlead and extends along the longitudinal axis of fairlead.The rear portion is provided with bearing and cavity.First swing arm is housed in the bearing by second groove and cavity.
Balance weight comprises the U-shaped body.The U-shaped body have two be equal in weight, side arm that shape is identical.Fairlead is housed in the U-shaped body.
The side arm of U-shaped body is swung in respect to the very short distance of fairlead, thereby fairlead can not hinder rotatablely moving of balance weight.Balance weight comprise around or accommodate the stirrup body of second oscillating bar assembly.Balance weight is provided with the pin that is rotatably connected on the housing.Under the driving of second oscillating bar assembly, balance weight can rotate with respect to the housing pivot.Angle between first oscillating bar assembly and second oscillating bar assembly is a zero degree.
First oscillating bar assembly comprises the clutch shaft bearing that directly or indirectly radially is installed on the power transmission shaft.Clutch shaft bearing can be extended into first swing arm radially outward.First swing arm is operationally meshed with reciprocating lever.First swing arm has ball-shaped end.
Second oscillating bar assembly comprises second bearing that directly or indirectly is installed on the power transmission shaft.Second bearing can be extended into second swing arm radially outward.Second swing arm has ball-shaped end.First swing arm and second swing arm are positioned at common axial plane (for example along reciprocating lever see that axially first swing arm and second swing arm are basically on same angle).
One driving element with angle radially is installed on the power transmission shaft, and driving element drives the reciprocating lever straight reciprocating motion with first oscillating bar assembly, and driving element moves back and forth with the second oscillating bar assembly driven equilibrium piece.This driving element is stepped.Driving element has first angle part and second angle part.This first angle part and second angle part respectively with the engagement of clutch shaft bearing and second bearing, thereby drive first swing arm and second swing arm moves back and forth (especially drive first swing arm move back and forth with second swing arm, 180 degree out-phase and commutate simultaneously).
Balance weight comprises that one axially accommodates the U-shaped body of fairlead.The U-shaped body has first side arm, second side arm and connect first side arm and second side arm and make the pedestal that is connected that it is provided with at interval.First side arm and second side arm be arranged in parallel.First side arm is provided with second side arm is vertical.Be located at the accepting hole that connects in the pedestal and accommodate the end of second swing arm.
Balance weight comprises a stirrup body around second oscillating bar assembly (preferably this stirrup body is square basically).This stirrup body extends from laterally connecting on the pedestal.The bottom of this stirrup body is a concave surface.
Balance weight is pivotally mounted on first lateral pin and second lateral pin thereby but the second swing arm driven equilibrium piece rotates with respect to the housing pivot.First lateral pin and second lateral pin can be arranged on the housing or be arranged on the balance weight (preferably stirrup body).First lateral pin and second lateral pin are arranged on the outer surface near its base of stirrup body.
The barycenter of balance weight is away from second swing arm and balance weight meshing point (preferred meshing point is positioned at the horizontal accepting hole that is connected pedestal).
Angle between first oscillating bar assembly and second oscillating bar assembly is 0 degree.
In most preferred embodiment of the present invention, described electric tool is a reciprocating saw.Thereby the present invention also can be used in and realize reducing at work vibration on other instrument.
Description of drawings
Characteristics of the present invention and advantage can be better understood in conjunction with the accompanying drawings.
Fig. 1 is the cutaway view of preferred embodiment of the present invention reciprocating saw, and wherein first oscillating bar assembly is positioned at its primary importance, and second oscillating bar assembly is positioned at its primary importance.
Fig. 2 is the phantom of preferred embodiment of the present invention reciprocating saw, and wherein first oscillating bar assembly is positioned at its second place, and second oscillating bar assembly is positioned at its second place.
Fig. 2 A is the sectional view of Fig. 2 along the IIA-IIA direction.
Fig. 3 is first oscillating bar assembly and second oscillating bar assembly along the cutaway view perpendicular to the III-III direction of the reciprocating lever axis among Fig. 1.
Fig. 4 be as shown in Figure 1 to Figure 3 reciprocating lever and the stereogram of balance weight.
Fig. 5 is the stereogram of balance weight as shown in Figures 1 to 4.
Fig. 6 is reciprocating lever and the balance weight schematic diagram when being positioned at primary importance separately.
Fig. 6 A is along the cutaway view of VIA-VIA direction among Fig. 6.
The schematic diagram that Fig. 7 is reciprocating lever and balance weight when separately primary importance and a certain position between the second place.
Fig. 8 is the schematic diagram that reciprocating lever and balance weight are positioned at the second place separately.Wherein:
1. housing 1b. inwall 1i. inwall 2. motors
2a. output shaft 2p. pinion 2q. gear wheel 3. instruments
3a. clamp assemblies 4. power transmission shaft 4a. bearing 4b. bearings
4f. cam 5. first oscillating bar assemblies 51. first swing arms 511. ends
52. clutch shaft bearing 54. side openings 55. pin 55H. pin heads
56. groove 6. second oscillating bar assemblies 61. second swing arms 611. ends
62. second bearing, 7. balance weight 71.U bodies, 72. stirrup bodies
72a. the first side arm 72b., the second side arm 72c. Connection Element, 73. first pins
73B. bearing block 73o. goes up connecting hole 74. second pins under the connecting hole 73u.
74A. bearing block 74o. goes up connecting hole 75. accepting holes under the connecting hole 74u.
76A. the first side arm 76B., second side arm 77. connects pedestal 8. reciprocating levers
81. rear portion 811. protruding 812. bearings, 813. cavitys
82. anterior 84. pins, 85. side openings, 86. pins
87. encircle 9. fairleads, 91. first grooves, 92. second grooves
95. bearing 96. driving chips 10. driving elements
The specific embodiment
It is reciprocating saw that Fig. 1 and Fig. 2 have disclosed the preferred embodiments of the present invention.This reciprocating saw is not vibration basically.This reciprocating saw comprises housing 1, is arranged on the motor 2 in the housing 1, and this motor 2 has the output shaft 2a that pinion 2p is installed.Pinion 2p is meshed with gear wheel 2q on being connected the power transmission shaft 4 with Z.Power transmission shaft 4 is supported in the housing 1 by bearing 4a and 4b.
An one eccentric cam 4f and an angled driving element 10 radially are installed between bearing 4a and 4b.When motor 2 work, cam 4f is with gear 2q and power transmission shaft 4 rotations.This cam 4f is essentially a decentralized casing.The right at this eccentric cam 4f is provided with a projection, and the groove that this projection and is arranged on the driving element left side is meshed.
Driving element 10 drives reciprocating lever 8 with first oscillating bar assembly 5 and moves back and forth, and moves back and forth around pivot axis Y (shown in Fig. 3 to 5) with second oscillating bar assembly, 6 driven equilibrium pieces 7.
Reciprocating lever 8 and fairlead 9 are housed in the housing 1.This reciprocating lever 8 is slidably mounted in the fairlead 9.The bearing 95 that is arranged on the front end inboard of fairlead 9 is supporting reciprocating lever 8.The longitudinal axis of this reciprocating lever 8 is X.
Reciprocating lever 8 comprises the rear portion 81 of tubulose and the front portion 82 of tubulose.In this embodiment, anterior 82 is more a little bit smaller than the diameter at rear portion 81.This front portion 82 is fixedly mounted on the rear end of rear portion 81 inner chambers by pin 84.Comparison diagram 1 and Fig. 2 as can be seen, reciprocating lever 8 is movably with respect to housing 1 in the direction of longitudinal axis X.Be connected with the clamp assembly 3a of the vertical blade 3 of clamping at the leading section of reciprocating lever 8.Thereby longitudinal axis X can be considered to axis of operation.With reference to Fig. 2 and Fig. 2 A, pin 86 and encircle 87 clamp assembly 3a is connected the leading section of reciprocating lever 8.
As mentioned above, reciprocating lever 8 is slidably disposed in the fairlead 9 of tubulose.The end face of fairlead 9 links to each other with the inwall 1i of housing 1.Thereby fairlead 9 can not move in the direction of the longitudinal axis X of reciprocating lever 8.Sold for 55 (as shown in Figure 6A) because in side opening 54, be provided with one, so fairlead 9 can be swung slightly around the axis of axle 55.In other words, fairlead 9 is pivotally connected in housing 1.In Fig. 1, double-head arrow D has indicated this little pivot motion up and down of fairlead 9.
See figures.1.and.2, anterior 82 extend into rear portion 81.First groove 91, second groove 92 are along the longitudinal extension of fairlead 9.First groove 91, second groove 92 are arranged on the relative both sides of fairlead 9.As can be seen from Figure 2, a projection 811 that is essentially rectangle is radially outstanding and slidably mate first groove 91 along the axis of reciprocating lever 8 from the outer surface at rear portion 81.The longitudinal length of projection 811 is less than the longitudinal length of first groove 91.Tubulose extension or bearing 812 and cavity 813 are arranged on the inside at the rear portion 81 of reciprocating lever 8.Bearing 812 and cavity 813 have the common axis perpendicular to the axis of reciprocating lever 8.The diameter of bearing 812 is littler than the diameter of cavity 813.
According to this design, reciprocating lever 8 can vertically move between the two ends of first groove 91
First oscillating bar assembly 5 comprises the clutch shaft bearing 52 that radially is installed on the angled driving element 10.First oscillating bar assembly 5 also comprises first swing arm 51 that is installed on the clutch shaft bearing 52.This first swing arm 51 has a ball-shaped end 511.The end 511 of first swing arm 51 is passed second groove 92 and cavity 813 and is housed in bearing 812.For first swing arm 51 is moved fully, the length of second groove 92 has been made corresponding setting.
Second oscillating bar assembly 6 comprises second bearing 62 that radially is installed on the angled driving element 10.Second bearing 62 is supporting second swing arm 61.Second swing arm 61 has ball-shaped end 611.Second swing arm, 61 to the first swing arms 51 are short.As shown in Figure 3, the end 611 of second swing arm 61 is housed in the hole 75 of balance weight 7.First swing arm 51 and second swing arm 61 are positioned at common axial plane, just, see along the longitudinal axis X of reciprocating lever 8 that they are (referring to Fig. 3) on same angle.Therefore, reciprocating lever 8 is put counter motion at one time with balance weight 7.Certainly, heterodromous direction is relative.
Eccentric cam 4f above mentions, and it is delivered to the moment of torsion of power transmission shaft 4 (just gear 2q's rotatablely moves) on the driving element 10, and it is connected with driving chip 96 on being installed in fairlead 9.Thereby rotate when driving this driving chip 96 and moving up and down when its, impel the motion slightly up and down of reciprocating lever 8, blade 3 thereby fairlead 9 produces motion, D indicates as double-head arrow.This structure has improved the speed and the quality of cutting.
Motor 2 drives power transmission shaft 4 rotations, thereby causes driving element 10 rotations.This driving element 10 comprises respectively first angle part and second angle part with clutch shaft bearing 52 and 62 engagements of second bearing, this first angle part and second angle part are used to drive first swing arm 51 and second swing arm 61 moves back and forth and commutation (as Fig. 6, Fig. 7 and shown in Figure 8) simultaneously with 180 degree out-phase.As shown in Figure 1, when first swing arm 51 moved to their primary importance with reciprocating lever 8, second swing arm 61 and balance weight 7 moved to their primary importance in the opposite direction.When first swing arm 51 and reciprocating lever 8 when primary importance shown in Figure 1 moves to the Fig. 2 and the second place that is positioned within the U-shaped body 71 shown in Figure 4, second swing arm 61 and balance weight 7 move to their second place round about.
, compare with the mechanism that realizes straight reciprocating motion to shown in Figure 5 as Fig. 3, the balance weight 7 that is driven by second oscillating bar assembly 6 can be regarded as a swing mechanism.
Referring to Fig. 3 to Fig. 5, balance weight 7 comprises a U-shaped body 71 and a stirrup body 72 from the extended frame shape of this U-shaped body.This U-shaped body 71 comprises the first side arm 76A, the second side arm 76B and the horizontal connection pedestal 77 that connects this first side arm 76A, the second side arm 76B and it is provided with at interval.Fairlead 9 extends axially by the space between side arm 76A, the 76B.This connection pedestal 77 is provided with the accepting hole 75 of the end 611 that is used to accommodate second swing arm 61.End 611 can be rotated in accepting hole 75.
Basically the stirrup body 72 that is square extends from the bottom of U-shaped body 71.This stirrup body 72 is accommodated or around second oscillating bar assembly 6.Stirrup body 72 comprises connection pedestal 77, the first side arm 72a, is parallel to the second side arm 72b and a Connection Element 72c of this first side arm 72a and setting with interval.
It is emphasized that pivot axis Y is with respect to housing 1 fixing (just not moving).
As mentioned above, the pivot axis Y of pivot is vertical with the longitudinal axis X of reciprocating lever 8 basically.Just, pivot axis Y is arranged in the plane perpendicular to longitudinal axis X.It is with respect to the axis (not shown) skew of directly vertically passing longitudinal axis X.At work, second swing arm, 61 driven equilibrium pieces 7 center on pivot axis Y with respect to housing 1 reciprocally swinging.The straight path of the swinging track of balance weight 7 and reciprocating lever 8 intersects.Balance weight 7 pivots in the plane of the longitudinal axis X that comprises (or being parallel to) reciprocating lever 8.
Fig. 4 has shown the side opening 85 that is positioned at reciprocating lever 8 anterior 82 mount pins 86 and the side opening 54 of mount pin 55.Pin 55 can be found out in Fig. 6 A.
Referring to Fig. 6 A, fairlead 9 is provided with a side opening 54.One pin 55 with pin head 55H inserts this side opening 54.A pin 55H has screw thread in the outside, thereby a pin 55H can be screwed in the groove 56 between the inwall 1b of housing 1.Pin 55 can stop the motion of fairlead 9 in the direction of the longitudinal axis X of reciprocating lever 8.But fairlead 9 can be swung (shown in Fig. 1 double-head arrow D) slightly around the longitudinal axis of pin 55.
During work, motor 2 drives power transmission shaft 4 and rotates, and the driving element 10 of power transmission shaft 4 drive installations on this power transmission shaft 4 rotates, so driving element 10 drives first oscillating bar assembly 5 and 6 motions of second oscillating bar assembly.When first swing arm 51 and reciprocating lever 8 moved to as shown in Figure 1 position, second swing arm 61 and balance weight 7 moved in opposite directions.Finally, first oscillating bar assembly 5 with and the reciprocating lever 8 that drives be positioned at their primary importance, second oscillating bar assembly 6 with and the balance weight 7 that drives be positioned at their primary importance.When first swing arm 51 and reciprocating lever 8 moved to as shown in Figure 2 the second place by primary importance shown in Figure 1 subsequently, second swing arm 61 and balance weight 7 moved in opposite directions.Finally, first oscillating bar assembly 5 with and the reciprocating lever 8 that drives be positioned at their second place, second oscillating bar assembly 6 with and the balance weight 7 that drives be positioned at their second place.The reciprocating motion that it is emphasized that balance weight 7 is for rotatablely moving.
The pendulum angle of balance weight 7 from the primary importance to the second place is 10 degree, and vice versa.
It should be noted that second swing arm 61 is shorter than the traditional swing arm and first swing arm 51.With reference to Fig. 2, first swing arm 51 can not bump against second swing arm 61 when the second place as can be seen.Therefore, with reference to Fig. 3, from the y direction of reciprocating lever 8, the angle between first swing arm 51 and second swing arm 61 is 0 degree.
With reference to Fig. 6, Fig. 7 and Fig. 8, can clearly be seen that: when power transmission shaft 4 rotates under the driving of motor 2 when partly scheming, first oscillating bar assembly 5 and the reciprocating lever 8 that drives thereof move to their second place from their primary importance, second oscillating bar assembly 6 with and the balance weight 7 that drives move to their second place from their primary importance.When power transmission shaft 4 rotated to next half-turn, first oscillating bar assembly 5 and reciprocating lever 8, the second oscillating bar assemblies 6 that drive thereof and the balance weight 7 that drives thereof moved to their primary importance from their second places separately.
Vibration when working in order to reduce reciprocating saw, the weight of second swing arm 61 and balance weight 7 and stroke and first swing arm 51, reciprocating lever 8, the weight and the stroke of the integral body of blade 3 and grasping system 3a match.(s2 * w2) should be substantially equal to product (s1 * w1) to product.For example, first swing arm 51, reciprocating lever 8, the weight W 1=200g of blade 3 and grasping system 3a integral body, and stroke is s1=32mm, product (w1 * s1)=0.2kg * 32mm=6.4kgmm.So for balance or compensation vibration, the parameter of balance weight 7 can be chosen to be has weight w2=0.4kg, so the stroke s2=16mm of barycenter is product w2 * s2=0.4kg * 16mm=6.4kgmm.
As mentioned above, balance weight 7 is pivotally connected on housing 1 (around 74 rotations of first pin, 73, second pin), and fairlead 9 is housed in the U-shaped body 71 of balance weight 7.Thereby allow balance weight 7 simply to move back and forth with respect to fairlead 9.Do not have big stroke and large-area friction, balance weight 7 can not hinder fairlead 9.Therefore, the motion of balance weight 7 and reciprocating lever 8 has improved the stability of system.Avoided using the linear slide of balance weight in fairlead in the prior art.Thereby the generation of heat is less relatively.
Claims (20)
1. electric tool, comprise housing (1), be arranged at the motor (2) in the described housing (1), the power transmission shaft (4) that connects with described motor (2), be arranged at the reciprocating lever (8) of the instrument that is equipped with (3) in the described housing (1), installing or be connected described power transmission shaft (4) goes up and drives described reciprocating lever (8) along the longitudinal axis (X) of this reciprocating lever (8) reciprocating first oscillating bar assembly of approximately linear (5) at least on linear track, be arranged in the described housing (1) and the balance weight (7) reciprocating with respect to described housing (1), install or be connected described power transmission shaft (4) and go up second oscillating bar assembly (6) that drives described balance weight (7), it is characterized in that: described balance weight (7) moves back and forth with respect to described housing (1) rotation around pivot axis (Y), and described pivot axis (Y) is arranged on perpendicular to fixing in the plane of the described longitudinal axis (X) and with respect to described housing (1).
2. a kind of electric tool according to claim 1 is characterized in that: described balance weight (7) pivots around described pivot axis (Y) on the pivot track that the straight path with reciprocating lever (8) intersects.
3. a kind of electric tool according to claim 1, it is characterized in that: described reciprocating lever (8) has the longitudinal axis (X), and described balance weight (7) is parallel or comprise in the pivot plane of the longitudinal axis (X) of described reciprocating lever (8) and rotate around described pivot axis (Y) pivot.
4. a kind of electric tool according to claim 1 is characterized in that: described reciprocating lever (8) has the longitudinal axis (X), and described balance weight (7) rotates around pivot axis (Y) pivot that is basically perpendicular to the described longitudinal axis (X).
5. a kind of electric tool according to claim 1 is characterized in that: described instrument (3) is a reciprocating saw blade.
6. a kind of electric tool according to claim 1, it is characterized in that: described balance weight (7) comprises U-shaped body (71), described U-shaped body (71) has first side arm (76A), second side arm (76B) and connect described first side arm (76A) and second side arm (76B) be connected pedestal (77).
7. a kind of electric tool according to claim 6 is characterized in that: described balance weight (7) has from the extended stirrup body of described U-shaped body (71) (72), and described stirrup body (72) is a rectangle.
8. a kind of electric tool according to claim 1 is characterized in that: described pivot axis (Y) is arranged on the described balance weight (7).
9. a kind of electric tool according to claim 7 is characterized in that: described pivot axis (Y) is arranged on the described stirrup body (72).
10. a kind of electric tool according to claim 1, it is characterized in that: described second oscillating bar assembly (6) comprises second swing arm (61), described balance weight (7) is pivotally mounted on first pin (73) and second pin (74), and described second oscillating bar assembly (6) drives described balance weight (7) and rotates with respect to described housing (1) pivot around described pivot axis (Y).
11. a kind of electric tool according to claim 10 is characterized in that: described first pin (73), second pin (74) be housed in the bearing block that firmly is connected on the described housing (1) (73B, 74A) in.
12. a kind of electric tool according to claim 1 is characterized in that: the longitudinal direction along described power transmission shaft (4) is seen, is 0 ° of angle between described first oscillating bar assembly (5) and described second oscillating bar assembly (6).
13. a kind of electric tool according to claim 6, it is characterized in that: described second oscillating bar assembly (6) comprises second swing arm (61) with second end (611), and described second end (611) is contained in the accepting hole (75) on the described connection pedestal (77).
14. a kind of electric tool according to claim 1, it is characterized in that: described first oscillating bar assembly (5) comprises first swing arm (51), described second oscillating bar assembly (6) comprises second swing arm (61), and wherein, described first swing arm (51) is longer than second swing arm (61).
15. a kind of electric tool according to claim 1 is characterized in that: be arranged with fairlead (9) on the described reciprocating lever (8), described fairlead (9) is fixed in the housing (1).
16. a kind of electric tool according to claim 15 is characterized in that: described fairlead (9) is provided with pin (55), drives described fairlead (9) and goes up swing in the direction that is basically perpendicular to the described longitudinal axis (X) (D).
17. a kind of electric tool according to claim 15 is characterized in that: described reciprocating lever (8) comprises the front portion (82) of erecting tools (3), and rear portion (81).
18. a kind of electric tool according to claim 17 is characterized in that: described front portion (82) are connected by pin (84) with described rear portion (81).
19. a kind of electric tool according to claim 17, it is characterized in that: described fairlead (9) comprises the first axial elongated slot (91), described rear portion (81) comprises projection (811), and described projection (811) is engaged in the described first axial elongated slot (91) along the longitudinal axis slip of described reciprocating lever (8).
20. a kind of electric tool according to claim 17, it is characterized in that: described first oscillating bar assembly (5) comprises first swing arm (51), described fairlead (9) comprises the second axial elongated slot (92), described rear portion (81) comprises bearing (812) and cavity (813), and described first swing arm (51) is housed in the described bearing (812) by the described second axial elongated slot (92) and described cavity (813).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101533899A CN1939660B (en) | 2005-09-30 | 2006-09-15 | Electric tool |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510094719.7 | 2005-09-30 | ||
| CN200510094719 | 2005-09-30 | ||
| CN2006101533899A CN1939660B (en) | 2005-09-30 | 2006-09-15 | Electric tool |
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| Publication Number | Publication Date |
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| CN1939660A CN1939660A (en) | 2007-04-04 |
| CN1939660B true CN1939660B (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006101533899A Active CN1939660B (en) | 2005-09-30 | 2006-09-15 | Electric tool |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0808724A2 (en) * | 2007-05-01 | 2015-11-24 | Hitachi Koki Kk | reciprocating tools |
| CN102284744B (en) * | 2010-06-18 | 2015-07-01 | 苏州宝时得电动工具有限公司 | Reciprocating saw |
| JP5826517B2 (en) * | 2011-05-27 | 2015-12-02 | 株式会社マキタ | Cutting tool |
| US9981372B2 (en) * | 2012-12-31 | 2018-05-29 | Robert Bosch Tool Corporation | Reciprocating tool with fluid driven counterweight |
| US9573207B2 (en) | 2013-05-09 | 2017-02-21 | Makita Corporation | Reciprocating cutting tool |
| CN107838880B (en) * | 2016-09-21 | 2023-11-07 | 苏州宝时得电动工具有限公司 | Reciprocating power tool |
| CN108971628B (en) * | 2017-05-31 | 2021-02-02 | 博世电动工具（中国）有限公司 | Electric tool |
| DE102017209829A1 (en) * | 2017-06-12 | 2018-12-13 | Robert Bosch Gmbh | Hand tool |
| EP3789161A1 (en) * | 2019-09-06 | 2021-03-10 | Hilti Aktiengesellschaft | Hand machine tool |
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