US20060039748A1 - Arrangement for connecting a rod end to a headed pin and method of manufacture - Google Patents
Arrangement for connecting a rod end to a headed pin and method of manufacture Download PDFInfo
- Publication number
- US20060039748A1 US20060039748A1 US10/449,744 US44974403A US2006039748A1 US 20060039748 A1 US20060039748 A1 US 20060039748A1 US 44974403 A US44974403 A US 44974403A US 2006039748 A1 US2006039748 A1 US 2006039748A1
- Authority
- US
- United States
- Prior art keywords
- pin
- vibration isolator
- housing
- rod
- cavity
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/416—Ball or spherical joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/10—Constructional features of arms
- B60G2206/11—Constructional features of arms the arm being a radius or track or torque or steering rod or stabiliser end link
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/10—Means for transmitting linear movement in a flexible sheathing, e.g. "Bowden-mechanisms"
- F16C1/108—Reducing or controlling of vibrations, e.g. by resilient damping of noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/10—Means for transmitting linear movement in a flexible sheathing, e.g. "Bowden-mechanisms"
- F16C1/12—Arrangements for transmitting movement to or from the flexible member
- F16C1/14—Construction of the end-piece of the flexible member; Attachment thereof to the flexible member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/50—Positive connections
- F16C2226/70—Positive connections with complementary interlocking parts
- F16C2226/74—Positive connections with complementary interlocking parts with snap-fit, e.g. by clips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/65—Gear shifting, change speed gear, gear box
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32606—Pivoted
- Y10T403/32631—Universal ball and socket
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32606—Pivoted
- Y10T403/32631—Universal ball and socket
- Y10T403/32786—Divided socket-type coupling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32606—Pivoted
- Y10T403/32631—Universal ball and socket
- Y10T403/32795—Bifurcated socket
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32606—Pivoted
- Y10T403/32631—Universal ball and socket
- Y10T403/32803—Separable socket sections
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32606—Pivoted
- Y10T403/32951—Transverse pin or stud
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/57—Distinct end coupler
- Y10T403/5761—Interrupted periphery, e.g., split or segmental, etc.
- Y10T403/5766—Axially divided segments
- Y10T403/5773—Interfitting
Definitions
- This invention concerns rod end terminal connections commonly used to connect control rods to pins mounted to automobile transmission levers and the like to enable shifting of the transmission by the driver of the automobile.
- the pin is retained in a housing by a ball feature head on the pin snap fit to retention features on the housing. It has become standard practice to interpose a vibration isolator between the connected rod and pin to prevent vibrations from being felt by the driver when grasping a shifter or other member. See U.S. Pat. No. 4,581,953 for an example of such a connection.
- the vibration isolator is usually constructed of a soft compressible material and excessive lash can result if the isolator material is directly contacted by the pin.
- an arrangement for establishing a rod end terminal connection having a vibration isolator of minimal thickness interposed between the rod and an overmolded minimally compressible hard plastic housing capturing the rod end and a vibration isolator interposed between the rod end and a pin receiving cavity defined by a hard plastic structure enclosed within the housing.
- the vibration isolator is itself overmolded onto the rod end, received in grooves in the rod and to be securely locked thereto.
- the hard plastic defined cavity is configured to receive the pin and a plurality of integral arcuate prongs are arranged about the inside of the cavity.
- the prongs are readily deflectable outwardly engagement of the head of the pin with sloping prong surfaces to accommodate insertion of the pin, but pin movement out is resisted by flat prong ends which requires application of a desired high extraction force to deflect the prongs and allow removal of the pin.
- the overmolding of the hard plastic housing eliminates assembly of separate parts as well as eliminating clearances and lash resulting from having separate parts.
- the housing opening has an overlying web blocking entrance of the pin into the cavity from the wrong side to insure insertion of the pin into the housing from the prior side.
- FIG. 1 is a perspective view of an arrangement for establishing rod end head pin connection according to the invention.
- FIG. 2 is a plan view of the arrangement shown in FIG. 1 with a fragmentary view of a rod end.
- FIG. 3 is a vertical sectional view taken through the rod end terminal connection shown in FIG. 1 .
- FIG. 4 is a horizontal sectional view taken through the rod end terminal connection shown in FIG. 1 .
- FIG. 5 is a fragmentary partially sectional perspective view from one side of the connection and mated pin shown in FIGS. 1-4 .
- FIG. 6 is a fragmentary partially sectional endwise perspective view of the connection shown in FIGS. 1-5 .
- FIG. 7 is a fragmentary plan view of a connection with a mating pin according to a second embodiment of the invention.
- FIG. 8 is a view of a vertical section through the connection shown in FIG. 1 .
- FIG. 9 is a plan view of an assembled inner core piece and vibration isolator components included in the connection shown in FIGS. 7 and 8 .
- FIG. 10 is a side elevational view of the assembled inner piece core and vibration isolator components shown in FIG. 9 .
- FIG. 11 is a perspective view of the inner core and assembled isolator components shown in FIGS. 9 and 10 .
- FIG. 12 is a perspective fragmentary view of the rod and terminal connection and mating pin shown in FIGS. 7 and 8 .
- the present invention provides an arrangement for establishing a connection between a headed pin 10 and one end of a steel control rod 12 .
- Such connections are commonly used to couple a transmission control rod to an automotive transmission lever by a pin allowing relative rotation.
- Other control linkage systems for automotive and other applications widely use such connections which allow a changing angle of the control rod on the pin as it is advanced retracted.
- This connection includes a thin walled (approximately 1 mm thick) soft elastomeric vibration isolator 14 preferably molded in place onto the one end of the control rod 12 , with a recess 16 on the one end of the rod 12 keying the vibration isolator 14 to insure retention thereon.
- the recess 16 also forms an annular feature 17 in the vibration isolator.
- the vibration isolator 14 could also be separate molded and assembled onto the one end of the control rod 12 (a suitable material is Bayer Desmopan 453 polyester polyethylene based grade) Shore hardness scale 53D (ASTM D2240).
- a pin receiver housing 18 is molded over the vibration isolator 14 and projects in a lengthwise direction away from the one end of the rod 12 to offset a hard plastic structure defining a pin receiving cavity 20 extending in a normal direction from the longitudinal axis of the control rod 12 .
- a portion of the housing 18 is received into the annular recess 17 formed in the vibration isolator 14 to be positively keyed thereto for secure retention.
- the housing 18 is molded from a hard plastic such as Dow Vydyne R533 (Nylon 66% graphite filled (33%), Rockwell harness scale M95 (ASTM D785).
- a pair of pin retention features comprising arcuate prongs 22 are integrally formed on opposite sides of the cavity 20 .
- Each prong 22 includes an axially extending base wall 24 spaced inwardly from the inside of the housing 18 to create a space allowing a radially outward deflection thereof.
- a radially inward projecting lip portion 26 extends from the free end of the base wall 24 , having a sloping undersurface 28 and a flat end surface 30 at the top as viewed in the drawings.
- the lower end of the cavity 20 is open while a web 32 extends there across at the top to provide an orientation feature insuring correct assembly with the pin 10 able to be inserted only from below as seen in the drawings.
- the pin 10 has a spherical head 34 which when inserted into the cavity 20 deflects the prongs 22 radially outward facilitated by the sloping undersurface 28 of the prongs being cammed outwardly by the spherically curving head 34 . Integral ribs 23 limit outward deflection of the prongs 22 .
- the head 34 After the head 34 is inserted sufficiently, the head 34 passes lips 26 of the prongs 22 allowing the prongs 22 to snap back to present the flat end face to the undersurface of the head 34 .
- a flange 38 on the pin 10 limits further insertion travel of the pin 34 by engaging the bottom 40 of the housing 18 .
- the insertion force required to install the pin 10 is much less than the force necessary to remove the pin 10 as a result of the sloping undersurface 28 and the flat end face 30 .
- any particular insertion force maximum and extraction force minimum can be designed for to meet the application requirements.
- the wall 24 is placed in bending by the camming out of the prongs 22 as the ball head 34 is inserted.
- the manufacturing process involves molding the vibration isolator 14 to the one end of the rod 12 .
- the manufacturing steps are as follows:
- housing 18 is overmolded around the isolator-rod subassembly, the housing 18 having a portion located at one end of the rod 12 and formed with a socket opening with radially inwardly projecting engagement prongs for securing the pin.
- the housing 18 in being molded from a hard plastic material, a low installation force for installing the pin can be achieved compared with much higher extraction forces required to separate the housing 18 from the pin 10 .
- the vibration isolator 14 is installed around the end of the steel rod 12 .
- the groove 16 in the end of the rod 12 will match up to an inner ridge on the isolator.
- the vibration isolator 14 is molded around the end of the steel rod 12 with the groove and ridge matching.
- vibration isolator 14 rod 12 subassembly is made, molding of the final terminal assembly takes place.
- the vibration isolator 14 rod 12 subassembly is placed in the mold into a predetermined position. No special position for orientation is needed.
- the prongs 22 and load feature of the housing 18 is then molded to create the final assembly. This molding process interlocks the vibration isolator 14 rod 12 subassembly with the newly molded housing 18 .
- the hard plastic housing 18 with engagement prongs 22 comprise a socket contacting the pin 10 , allowing the design of the prongs 22 to set the amount of installation and extraction force desired.
- the prong design i.e., the thickness of the wall, the amount of installation load required to secure the pin 10 can be reduced to meet any requirements and still maintain the required minimum extraction force.
- the second advantage is that by molding the housing 18 around the vibration isolator 14 and steel rod end, this will provide increased strength to the rod end assembly and ensure that the housing 18 , vibration isolator 14 , and steel rod 12 are securely assembled. This design will also interlock these components to eliminate any tolerance gaps between individual parts. Prior designs had the possibility for tolerance gaps between parts, which will cause free play in the system known as “lash”.
- the third advantage is that the vibration isolator 14 is wrapped around the steel rod 12 to avoid direct contact with the pin 10 .
- the vibration isolator 14 is molded with a small cross section wall to lower the thickness of material subject to compression. This will lower system lash and while still maintaining adequate vibration dampening capabilities.
- the fourth advantage is a reduction in manufacturing cost. By molding the housing 18 over the vibration isolator/steel rod subassembly there is a reduction in cost for manufacturing the connection.
- the fifth advantage is obtained by the addition of the orientation feature 36 to the housing 18 .
- the housing 18 can only go onto the pin 10 in one direction. Previously this was done by installing a separate component, increasing the cost of manufacture.
- This design will make it easier to install on the vehicle, reduces cost, and reduces the number of parts in the assembly.
- FIGS. 7-12 The second embodiment is shown in FIGS. 7-12 , in which a hard plastic housing 38 is directly molded to one end of the control rod 12 .
- the ring shaped vibration isolator 40 is assembled onto a generally cylindrical hard plastic core piece 42 separately molded.
- the housing 38 is molded over the vibration isolator 40 .
- the vibration isolator 40 does not directly contact the pin 10 .
- the core piece 42 has a central pin receiving cavity 46 formed with inwardly facing deflectable prongs 44 and orientation feature 48 as in the first described embodiment.
- a ridge 43 on the core piece 42 forms grooves 45 matching grooves 47 on the vibration isolator 40 on the core piece 42 and, together with a ridge 41 on the vibration isolator 40 , these ensure mutual retention to the overmolded housing 38 .
- the vibration isolator 40 is installed around the inner core piece 42 .
- the grooves 45 match up on both parts.
- the vibration isolator 42 is fully assembled around the inner core piece 42 and the grooves matched. Direction does not matter since the vibration isolator 42 is symmetrical and will go on either direction.
- the inner core piece subassembly is placed in the mold along with the groove end of the steel rod 12 .
- the inner core piece subassembly is installed on a special pin in the mold. This special pin correctly positions the inner core piece subassembly so that the load path feature of the inner core piece 42 is in an axial line with the steel rod 12 . This will insure that the contact prongs 44 will be positioned 90 degrees to the steel rod 12 .
- the steel rod 12 is placed in the mold.
- the rod 12 is positioned so that the rod end contacts the ridge 43 vibration isolator 40 . This will serve as a position stop for the steel rod 12 . This stop feature will make it easier for the operator to properly place the steel rod 12 for the final molding.
- the outer housing 38 is molded over these two other components. This molding process interlocks the inner core piece subassembly and the steel rod to form the final terminal rod assembly.
Abstract
Description
- This application claims the benefit of U.S. provisional applications Ser. No. 60/386,986, filed Jun. 7, 2002 and Ser. No. 60/400,082, filed Jul. 31, 2002.
- This invention concerns rod end terminal connections commonly used to connect control rods to pins mounted to automobile transmission levers and the like to enable shifting of the transmission by the driver of the automobile. The pin is retained in a housing by a ball feature head on the pin snap fit to retention features on the housing. It has become standard practice to interpose a vibration isolator between the connected rod and pin to prevent vibrations from being felt by the driver when grasping a shifter or other member. See U.S. Pat. No. 4,581,953 for an example of such a connection.
- The vibration isolator is usually constructed of a soft compressible material and excessive lash can result if the isolator material is directly contacted by the pin.
- Such connections have been provided by assembling several parts together, and the necessary clearances for assembly also contribute to excessive lash at the connection.
- The cost of manufacturing such linkages typically is high due to the need to assemble several components, and the need to insure that proper assembly of the components has been accomplished.
- Another difficulty is encountered in designing the usually snap fit assembled pin and rod connection so that the force to assemble the connection must be low while the force resisting disconnection of the components must be much higher.
- It is the object of the present invention to provide an arrangement for providing a connection between a pin and control rod including a vibration isolator which minimizes lash between the connected components.
- It is a further object to provide such an arrangement which can be manufactured at low cost.
- It is yet another object to provide a snap fit pin-rod connection in which a desired greater separation force and lesser assembly force can be easily designed for.
- These and other objects which will become apparent upon a reading of the following specification and claims are achieved by an arrangement for establishing a rod end terminal connection having a vibration isolator of minimal thickness interposed between the rod and an overmolded minimally compressible hard plastic housing capturing the rod end and a vibration isolator interposed between the rod end and a pin receiving cavity defined by a hard plastic structure enclosed within the housing. Preferably the vibration isolator is itself overmolded onto the rod end, received in grooves in the rod and to be securely locked thereto. The hard plastic defined cavity is configured to receive the pin and a plurality of integral arcuate prongs are arranged about the inside of the cavity. The prongs are readily deflectable outwardly engagement of the head of the pin with sloping prong surfaces to accommodate insertion of the pin, but pin movement out is resisted by flat prong ends which requires application of a desired high extraction force to deflect the prongs and allow removal of the pin.
- The overmolding of the hard plastic housing eliminates assembly of separate parts as well as eliminating clearances and lash resulting from having separate parts. The housing opening has an overlying web blocking entrance of the pin into the cavity from the wrong side to insure insertion of the pin into the housing from the prior side.
-
FIG. 1 is a perspective view of an arrangement for establishing rod end head pin connection according to the invention. -
FIG. 2 is a plan view of the arrangement shown inFIG. 1 with a fragmentary view of a rod end. -
FIG. 3 is a vertical sectional view taken through the rod end terminal connection shown inFIG. 1 . -
FIG. 4 is a horizontal sectional view taken through the rod end terminal connection shown inFIG. 1 . -
FIG. 5 is a fragmentary partially sectional perspective view from one side of the connection and mated pin shown inFIGS. 1-4 . -
FIG. 6 is a fragmentary partially sectional endwise perspective view of the connection shown inFIGS. 1-5 . -
FIG. 7 is a fragmentary plan view of a connection with a mating pin according to a second embodiment of the invention. -
FIG. 8 is a view of a vertical section through the connection shown inFIG. 1 . -
FIG. 9 is a plan view of an assembled inner core piece and vibration isolator components included in the connection shown inFIGS. 7 and 8 . -
FIG. 10 is a side elevational view of the assembled inner piece core and vibration isolator components shown inFIG. 9 . -
FIG. 11 is a perspective view of the inner core and assembled isolator components shown inFIGS. 9 and 10 . -
FIG. 12 is a perspective fragmentary view of the rod and terminal connection and mating pin shown inFIGS. 7 and 8 . - In the following detailed description, certain specific terminology will be employed for the sake of clarity and a particular embodiment described in accordance with the requirements of 35 USC 112, but it is to be understood that the same is not intended to be limiting and should not be so construed inasmuch as the invention is capable of taking many forms and variations within the scope of the appended claims.
- Referring to the drawings, and particularly
FIGS. 1-6 , the present invention provides an arrangement for establishing a connection between aheaded pin 10 and one end of asteel control rod 12. Such connections are commonly used to couple a transmission control rod to an automotive transmission lever by a pin allowing relative rotation. Other control linkage systems for automotive and other applications widely use such connections which allow a changing angle of the control rod on the pin as it is advanced retracted. - This connection includes a thin walled (approximately 1 mm thick) soft
elastomeric vibration isolator 14 preferably molded in place onto the one end of thecontrol rod 12, with arecess 16 on the one end of therod 12 keying thevibration isolator 14 to insure retention thereon. Therecess 16 also forms anannular feature 17 in the vibration isolator. Thevibration isolator 14 could also be separate molded and assembled onto the one end of the control rod 12 (a suitable material is Bayer Desmopan 453 polyester polyethylene based grade) Shore hardness scale 53D (ASTM D2240). - A
pin receiver housing 18 is molded over thevibration isolator 14 and projects in a lengthwise direction away from the one end of therod 12 to offset a hard plastic structure defining apin receiving cavity 20 extending in a normal direction from the longitudinal axis of thecontrol rod 12. - A portion of the
housing 18 is received into theannular recess 17 formed in thevibration isolator 14 to be positively keyed thereto for secure retention. - The
housing 18 is molded from a hard plastic such as Dow Vydyne R533 (Nylon 66% graphite filled (33%), Rockwell harness scale M95 (ASTM D785). - A pair of pin retention features comprising
arcuate prongs 22 are integrally formed on opposite sides of thecavity 20. Eachprong 22 includes an axially extendingbase wall 24 spaced inwardly from the inside of thehousing 18 to create a space allowing a radially outward deflection thereof. - A radially inward projecting
lip portion 26 extends from the free end of thebase wall 24, having asloping undersurface 28 and aflat end surface 30 at the top as viewed in the drawings. - The lower end of the
cavity 20 is open while aweb 32 extends there across at the top to provide an orientation feature insuring correct assembly with thepin 10 able to be inserted only from below as seen in the drawings. - The
pin 10 has aspherical head 34 which when inserted into thecavity 20 deflects theprongs 22 radially outward facilitated by the slopingundersurface 28 of the prongs being cammed outwardly by the spherically curvinghead 34.Integral ribs 23 limit outward deflection of theprongs 22. - After the
head 34 is inserted sufficiently, thehead 34 passeslips 26 of theprongs 22 allowing theprongs 22 to snap back to present the flat end face to the undersurface of thehead 34. - A
flange 38 on thepin 10 limits further insertion travel of thepin 34 by engaging thebottom 40 of thehousing 18. - The insertion force required to install the
pin 10 is much less than the force necessary to remove thepin 10 as a result of the slopingundersurface 28 and theflat end face 30. By varying the thickness of thewall 24, any particular insertion force maximum and extraction force minimum can be designed for to meet the application requirements. Thewall 24 is placed in bending by the camming out of theprongs 22 as theball head 34 is inserted. - The manufacturing process involves molding the
vibration isolator 14 to the one end of therod 12. - The manufacturing steps are as follows:
- This subassembly is then placed in a mold and
housing 18 is overmolded around the isolator-rod subassembly, thehousing 18 having a portion located at one end of therod 12 and formed with a socket opening with radially inwardly projecting engagement prongs for securing the pin. Thehousing 18 in being molded from a hard plastic material, a low installation force for installing the pin can be achieved compared with much higher extraction forces required to separate thehousing 18 from thepin 10. - The specific manufacturing process steps are as follows:
- The
vibration isolator 14 is installed around the end of thesteel rod 12. Thegroove 16 in the end of therod 12 will match up to an inner ridge on the isolator. Thevibration isolator 14 is molded around the end of thesteel rod 12 with the groove and ridge matching. - Once the
vibration isolator 14rod 12 subassembly is made, molding of the final terminal assembly takes place. Thevibration isolator 14rod 12 subassembly is placed in the mold into a predetermined position. No special position for orientation is needed. Theprongs 22 and load feature of thehousing 18 is then molded to create the final assembly. This molding process interlocks thevibration isolator 14rod 12 subassembly with the newly moldedhousing 18. - This connection and method provides several advantages. The first is that the hard
plastic housing 18 withengagement prongs 22 comprise a socket contacting thepin 10, allowing the design of theprongs 22 to set the amount of installation and extraction force desired. By changing the prong design, i.e., the thickness of the wall, the amount of installation load required to secure thepin 10 can be reduced to meet any requirements and still maintain the required minimum extraction force. - The second advantage is that by molding the
housing 18 around thevibration isolator 14 and steel rod end, this will provide increased strength to the rod end assembly and ensure that thehousing 18,vibration isolator 14, andsteel rod 12 are securely assembled. This design will also interlock these components to eliminate any tolerance gaps between individual parts. Prior designs had the possibility for tolerance gaps between parts, which will cause free play in the system known as “lash”. - The third advantage is that the
vibration isolator 14 is wrapped around thesteel rod 12 to avoid direct contact with thepin 10. Thevibration isolator 14 is molded with a small cross section wall to lower the thickness of material subject to compression. This will lower system lash and while still maintaining adequate vibration dampening capabilities. - The fourth advantage is a reduction in manufacturing cost. By molding the
housing 18 over the vibration isolator/steel rod subassembly there is a reduction in cost for manufacturing the connection. - The fifth advantage is obtained by the addition of the
orientation feature 36 to thehousing 18. By adding this feature integrally thehousing 18 can only go onto thepin 10 in one direction. Previously this was done by installing a separate component, increasing the cost of manufacture. - This design will make it easier to install on the vehicle, reduces cost, and reduces the number of parts in the assembly.
- The second embodiment is shown in
FIGS. 7-12 , in which a hardplastic housing 38 is directly molded to one end of thecontrol rod 12. - The ring shaped
vibration isolator 40 is assembled onto a generally cylindrical hardplastic core piece 42 separately molded. Thehousing 38 is molded over thevibration isolator 40. Thus, thevibration isolator 40 does not directly contact thepin 10. - The
core piece 42 has a centralpin receiving cavity 46 formed with inwardly facingdeflectable prongs 44 and orientation feature 48 as in the first described embodiment. - A
ridge 43 on thecore piece 42forms grooves 45 matching grooves 47 on thevibration isolator 40 on thecore piece 42 and, together with aridge 41 on thevibration isolator 40, these ensure mutual retention to theovermolded housing 38. - The
vibration isolator 40 is installed around theinner core piece 42. Thegrooves 45 match up on both parts. Thevibration isolator 42 is fully assembled around theinner core piece 42 and the grooves matched. Direction does not matter since thevibration isolator 42 is symmetrical and will go on either direction. - The inner core piece subassembly is placed in the mold along with the groove end of the
steel rod 12. The inner core piece subassembly is installed on a special pin in the mold. This special pin correctly positions the inner core piece subassembly so that the load path feature of theinner core piece 42 is in an axial line with thesteel rod 12. This will insure that the contact prongs 44 will be positioned 90 degrees to thesteel rod 12. - Once the inner core piece subassembly is in place, the
steel rod 12 is placed in the mold. Therod 12 is positioned so that the rod end contacts theridge 43vibration isolator 40. This will serve as a position stop for thesteel rod 12. This stop feature will make it easier for the operator to properly place thesteel rod 12 for the final molding. - Once the
steel rod 12 and the inner core piece subassembly are correctly in place, theouter housing 38 is molded over these two other components. This molding process interlocks the inner core piece subassembly and the steel rod to form the final terminal rod assembly.
Claims (20)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/449,744 US20060039748A1 (en) | 2002-06-07 | 2003-05-30 | Arrangement for connecting a rod end to a headed pin and method of manufacture |
US10/627,346 US7226234B2 (en) | 2002-07-31 | 2003-07-25 | Arrangement and method for connecting a rod end to a headed pin |
AT03017218T ATE480727T1 (en) | 2002-07-31 | 2003-07-29 | ARRANGEMENT AND METHOD FOR CONNECTING A ROD TO A PIN |
EP20030017218 EP1387095B1 (en) | 2002-07-31 | 2003-07-29 | An arrangement and method for connecting a rod end to a headed pin |
DE60334054T DE60334054D1 (en) | 2002-07-31 | 2003-07-29 | Arrangement and method for connecting a rod to a pin |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US38698602P | 2002-06-07 | 2002-06-07 | |
US40008202P | 2002-07-31 | 2002-07-31 | |
US10/449,744 US20060039748A1 (en) | 2002-06-07 | 2003-05-30 | Arrangement for connecting a rod end to a headed pin and method of manufacture |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/627,346 Continuation-In-Part US7226234B2 (en) | 2002-07-31 | 2003-07-25 | Arrangement and method for connecting a rod end to a headed pin |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060039748A1 true US20060039748A1 (en) | 2006-02-23 |
Family
ID=30118598
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/449,744 Abandoned US20060039748A1 (en) | 2002-06-07 | 2003-05-30 | Arrangement for connecting a rod end to a headed pin and method of manufacture |
US10/627,346 Expired - Fee Related US7226234B2 (en) | 2002-07-31 | 2003-07-25 | Arrangement and method for connecting a rod end to a headed pin |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/627,346 Expired - Fee Related US7226234B2 (en) | 2002-07-31 | 2003-07-25 | Arrangement and method for connecting a rod end to a headed pin |
Country Status (4)
Country | Link |
---|---|
US (2) | US20060039748A1 (en) |
EP (1) | EP1387095B1 (en) |
AT (1) | ATE480727T1 (en) |
DE (1) | DE60334054D1 (en) |
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US20100275715A1 (en) * | 2009-05-01 | 2010-11-04 | Dura Global Technologies, Inc. | Shift cable assembly and connector therefor |
US20110013975A1 (en) * | 2009-07-14 | 2011-01-20 | Fulvio Orsolini | Ball joint for connecting mechanical elements |
US20110033226A1 (en) * | 2008-04-18 | 2011-02-10 | Nhk Spring Co., Ltd. | Ball joint and production method therefor |
US20110123259A1 (en) * | 2008-07-04 | 2011-05-26 | Zf Friedrichshafen Ag | Motor vehicle, particularly commercial vehicle, and joint arrangement |
WO2011072709A1 (en) | 2009-12-18 | 2011-06-23 | Kongsberg Automotive Ab | Gear shift system |
US8141454B2 (en) | 2008-12-12 | 2012-03-27 | Dura Automotive Systems, Llc | Cable assembly with retainer |
US8516921B2 (en) | 2009-04-01 | 2013-08-27 | Dura Operating, Llc | Cable assembly with multi-directional connector |
US20210053201A1 (en) * | 2019-08-22 | 2021-02-25 | Ingersoll-Rand Industrial U.S., Inc. | Impact tool with vibration isolation |
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090189303A1 (en) * | 2006-05-09 | 2009-07-30 | Carl Zeiss Vision Australia Holdings Limited | Methods for forming coated high index optical elements |
US20080217461A1 (en) * | 2007-03-08 | 2008-09-11 | Ruhlander Gregory P | Multi-piece core adjuster with optional configurations |
US8113085B2 (en) | 2007-03-08 | 2012-02-14 | Dura Global Technologies, Llc | Multi-piece core adjuster with optional configurations |
US8376647B2 (en) * | 2008-04-18 | 2013-02-19 | Nhk Spring Co., Ltd. | Ball joint and production method therefor |
US20110033226A1 (en) * | 2008-04-18 | 2011-02-10 | Nhk Spring Co., Ltd. | Ball joint and production method therefor |
US8708594B2 (en) * | 2008-07-04 | 2014-04-29 | Zf Friedrichshafen Ag | Motor vehicle, particularly commercial vehicle, and joint arrangement |
US20110123259A1 (en) * | 2008-07-04 | 2011-05-26 | Zf Friedrichshafen Ag | Motor vehicle, particularly commercial vehicle, and joint arrangement |
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US8141454B2 (en) | 2008-12-12 | 2012-03-27 | Dura Automotive Systems, Llc | Cable assembly with retainer |
US8516921B2 (en) | 2009-04-01 | 2013-08-27 | Dura Operating, Llc | Cable assembly with multi-directional connector |
US20100275715A1 (en) * | 2009-05-01 | 2010-11-04 | Dura Global Technologies, Inc. | Shift cable assembly and connector therefor |
US20110013975A1 (en) * | 2009-07-14 | 2011-01-20 | Fulvio Orsolini | Ball joint for connecting mechanical elements |
EP2278178A1 (en) * | 2009-07-14 | 2011-01-26 | Fulvio Orsolini | Ball joint for connecting mechanical elements |
WO2011072709A1 (en) | 2009-12-18 | 2011-06-23 | Kongsberg Automotive Ab | Gear shift system |
US20210053201A1 (en) * | 2019-08-22 | 2021-02-25 | Ingersoll-Rand Industrial U.S., Inc. | Impact tool with vibration isolation |
US11623336B2 (en) * | 2019-08-22 | 2023-04-11 | Ingersoll-Rand Industrial U.S., Inc. | Impact tool with vibration isolation |
Also Published As
Publication number | Publication date |
---|---|
EP1387095B1 (en) | 2010-09-08 |
ATE480727T1 (en) | 2010-09-15 |
US7226234B2 (en) | 2007-06-05 |
EP1387095A2 (en) | 2004-02-04 |
DE60334054D1 (en) | 2010-10-21 |
US20040037624A1 (en) | 2004-02-26 |
EP1387095A3 (en) | 2005-02-09 |
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