Cable pull with guide bushing and length compensation, transmission arrangement with a cable pull

Patent metadata

Field	Value
Publication number	US-10352350-B2
Application number	US-201415038993-A
Country	US
Kind code	B2
Filing date	Oct 28, 2014
Priority date	Nov 28, 2013
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

A cable pull for transmitting a tensile and/or pressure force to a pivot point is presented. The cable pull has a counter bearing, a tie rod, an adjustment unit and a locking element. The counter bearing is designed to introduce a counter bearing into a casing of the cable pull, counter to the tensile and/or pressure force. The tie rod is axially supported in the counter bearing, and coupled to a wire core of the cable pull. The tie rod has a molded part on an end protruding out of the counter bearing, having a first component of a toothing. The adjustment element is designed to adjust a length of the cable pull between the counter bearing and the pivot point. The adjustment element has a guide for the molded part. The molded part can move axially in the guide, and is disposed such that it is guided transverse thereto. The locking element is designed to fix the molded part in place in the adjustment unit. The locking element is disposed in a recess in the adjustment unit oriented transverse to the guide, and can move between a locking position and an adjustment position. The locking element has a second component of the toothing, which is designed to engage in the first component in a form fitting manner when in the locking position, and to suppress the axial movement of the molded part in the guide.

First claim

The invention claimed is:

1. A cable pull for transmitting a force for a transmission system for a vehicle, comprising:
a counter bearing for introducing a counter force, counter to the force, into a casing of the cable pull;
a tie rod, which is axially supported in the counter bearing and is coupled to a wire core of the cable pull, wherein the tie rod has a molded part with a first component of a toothing on an end protruding out of the counter bearing;
an adjustment unit for adjusting a length of the cable pull, wherein the adjustment unit has a guide for the molded part, wherein the molded part is configured to move axially in the guide; and
a locking element for fixing the molded part in place in the adjustment unit, wherein the locking element is disposed in a recess in the adjustment unit oriented such that the adjustment unit is transverse to the guide, wherein the locking element can move between a locking position and an adjustment position, wherein the locking element has a second component of the toothing which is designed to engage with the first component in a form fitting manner when in the locking position and to suppress an axial movement of the molded part in the guide,
wherein the locking element comprises an insert made of a material that exhibits a greater mechanical loading capacity than a material of a remainder of the locking element, wherein at least one part of the second component of the toothing is formed on the insert.

2. The cable pull according to claim 1 , wherein the first component of the toothing and the second component of the toothing has a tooth pitch that is less than one millimeter.

3. The cable pull according to claim 1 , wherein the first component of the toothing and the second component of the toothing has a tooth pitch that is less than three quarters of a millimeter.

4. The cable pull according to claim 1 , wherein the first component of the toothing and the second component of the toothing has a tooth pitch of less than one half of a millimeter.

5. The cable pull according to claim 1 , wherein the material for the insert is a metallic substance, and the material for the remainder of the locking element is a plastic substance.

6. The cable pull according to claim 1 , wherein the molded part comprises a rectangular cross section, wherein the first component of the toothing is disposed on two opposing lateral surfaces of the molded part.

7. The cable pull according to claim 1 , wherein the molded part comprises a thickening on an end lying opposite the tie rod which extends beyond the first component of the toothing, wherein the thickening rests against lateral walls of the guide, and the first component exhibits a spacing to the lateral walls.

8. The cable pull according to claim 1 , wherein the locking element has at least one locking lug which is designed to engage with a first edge of the adjustment unit in a form fitting manner when in the adjustment position in order to secure the locking element against removal from the recess, wherein the locking lug has a bevel which allows the locking lug to be pressed into the recess when moved into the locking position, wherein the locking lug is designed to engage with a second edge of the adjustment unit in a form fitting manner when in the locking position in order to secure the locking element against removal from the locking position.

9. The cable pull according to claim 8 , wherein the adjustment unit comprises a cut-out pocket and wherein the first edge of the adjustment unit is located in the cut-out pocket.

10. The cable pull according to claim 8 , wherein the locking element comprises a pocket on an outer surface and a flexible tongue disposed in the pocket, wherein the at least one locking lug is disposed on the flexible tongue.

11. The cable pull according to claim 1 , wherein the locking element has a sliding surface, wherein the sliding surface is disposed adjacent to the first component when in the adjustment position, and is disposed offset to the first component when in the locking position.

12. The cable pull according to claim 1 , wherein the first component of the toothing and the second component of the toothing is formed with insertion bevels.

13. The cable pull according to claim 1 , wherein the teeth of the first component of the toothing and the second component of the toothing are each rounded at the bottom of the teeth and at the top of the teeth.

14. The cable pull according to claim 1 , wherein the locking element comprises a flange that is spaced apart from the adjustment unit in the adjustment position and adjacent to the adjustment unit in the locking position.

15. The cable pull according to claim 1 , wherein the locking element is substantially U-shaped and has two spaced apart legs, wherein the second component of the toothing is located on inner surfaces of the legs, wherein the molded part is between the legs when the molded party is fixed in place in the adjustment unit.

16. The cable pull according to claim 12 , wherein the locking element is substantially U-shaped and has two spaced apart legs, wherein the insertion bevels comprise a decreasing height of tops of the teeth toward free ends of the legs.

17. A transmission system comprising:
a transmission with a pivotable connection and with a gearshift lever for a vehicle,
a cable pull comprising:
first and second counter bearings for introducing a counter force into a casing of the cable pull;
a tie rod, which is axially supported in the first counter bearing and is coupled to a wire core of the cable pull, wherein the tie rod has a molded part with a first component of a toothing on an end protruding out of the first counter bearing;
an adjustment unit for adjusting a length of the cable pull, wherein the adjustment unit has a guide for the molded part, wherein the molded part can move axially in the guide; and
a locking element for fixing the molded part in place in the adjustment unit, wherein the locking element is disposed in a recess in the adjustment unit oriented such that it is transverse to the guide, wherein the locking element can move between a locking position and an adjustment position, wherein the locking element has a second component of the toothing which is designed to engage with the first component in a form fitting manner when in the locking position and to suppress an axial movement of the molded part in the guide;

wherein the cable pull connects the gearshift lever to the pivotable connection, and is designed to transmit a force from the gearshift lever to the pivotable connection, wherein the first and second counter bearings are formed on opposite ends of the casing of the cable pull in order to support the counter force to the force,
wherein the locking element comprises an insert made of a material that exhibits a greater mechanical loading capacity than a material of a remainder of the locking element, wherein at least one part of the second component of the toothing is formed on the insert.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Rake Ludger
• Giefer Andreas
• Fortmann Wolfgang

Classifications

• F16H61/36

  with at least one movement being transmitted by a cable · CPC title

• F16C2361/65

  Gear shifting, change speed gear, gear box · CPC title

• F16C2226/80

  with splines, serrations or similar profiles to prevent movement between joined parts · CPC title

• F16C1/14 Primary

  Construction of the end-piece of the flexible member; Attachment thereof to the flexible member · CPC title

• F16C1/223

  by adjusting the effective length of the flexible member · CPC title