Gear shifting system and gear shifting element for a gear shifting system

Patent metadata

Field	Value
Publication number	US-9829103-B2
Application number	US-201314443781-A
Country	US
Kind code	B2
Filing date	Oct 10, 2013
Priority date	Nov 19, 2012
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

A gear shifting device is provided, by which an axial shift movement of a shift element into a shift position through interaction of a shift pin with an associated groove-like shift gate that is changeable in an axial direction. The shift element features, on an inner diameter and/or an outer diameter, the associated shift gate, while the respective shift pin is arranged in a radially opposite and displaceable manner on a transmission component adjacent to the shift element. As an alternative, the shift element, on an inner diameter and/or an outer diameter, accommodates the respective shift pin in a radially displaceable manner, whereas the associated shift gate for the respective shift gate is arranged to be radially opposite on a transmission component located adjacent to the shift element. The shift pin is movable through an associated actuator in a radial manner between an initial position and a mesh position in which each shift pin is introduced into the associated shift gate.

First claim

The invention claimed is:

1. A gear shifting device, comprising:
a first rotatably drivable transmission component ( 1 );
a shift element ( 7 ) arranged in a torque-proof and axially displaceable manner on the first transmission component, the shift element axially movable into a shift position in which the first transmission component ( 1 ) is coupled in a torque-proof manner with a connectable transmission component ( 4 ) that is arranged adjacent and connectable to the first transmission component;
a first shift gate ( 14 ) and a second shift gate ( 15 ) defined on an outer diameter of the shift element ( 7 ), the shift gates having an axially changing course and located axially apart from the connectable transmission component;
a first radially displaceable shift pin ( 16 ) and a second radially displaceable shift pin ( 17 ) connectable to the transmission component radially opposite to the shift gates, the shift pins displaced by an associated actuator ( 20 ) in a radial manner between an initial position and a mesh position in which the first shift pin is introduced into the first shift gate or in which the second shift pin is introduced into the second shift gate; and
wherein the shift element ( 7 ) is provided on an axial front side thereof with an axially protruding and revolving claw toothing ( 10 ) oriented towards the connectable transmission component ( 4 ).

2. The gear shifting device according to claim 1 , wherein the shift pins ( 16 , 17 ) and the associated actuator ( 20 ) are provided on a housing ( 19 ) that radially surrounds the shift element ( 7 ).

3. The gear shifting device according to claim 2 , wherein the shift pins ( 16 , 17 ) are provided on the actuator ( 20 ), and the two shift gates ( 14 , 15 ) are provided in the outer diameter of the shift element ( 7 ) and are arranged to run opposite to each other and with respective changing axial courses, wherein through introduction of the first shift pin ( 16 ) in the first shift gate ( 14 ), a shift movement of the shift element ( 7 ) from a neutral position into the shift position is brought about, and through introduction of the second shift pin ( 17 ) in the second shift gate ( 15 ), a return movement of the shift element ( 7 ) from the shift position into the neutral position is brought about.

4. The gear shifting device according to claim 1 , wherein the shifting device further comprises a coupling body ( 11 ) guided in a torque-proof manner on the connectable transmission component ( 4 ) axially between the connectable transmission component and the shift element ( 7 ), the coupling body is provided with a toothing ( 12 ) corresponding to the claw toothing ( 10 ) of the shift element ( 7 ), and wherein the coupling body is coupled in an axially displaceable manner with the transmission component ( 4 ) through an intermediate spring element ( 13 ).

5. The gear shifting device according to claim 1 , further comprising a locking device ( 21 ) provided radially between the shift element ( 7 ) and the first transmission component ( 1 ), the locking device preventing unintended axial movements of the shift element ( 7 ) between a neutral position and the shift position.

6. The gear shifting device according to claim 5 , wherein the locking device ( 21 ) comprises a bail ( 23 ) guided in a radially movable manner, the ball preloaded against a locking contour ( 22 ) radially opposite to the ball by a spring element ( 25 ), the locking contour ( 22 ) designed as a locking recess ( 26 ) in the shift position of the shift element and a separate locking recess ( 27 ) in the neutral position of the shift element.

7. The gear shifting device according to claim 1 , wherein the first transmission component ( 1 ) is a transmission shaft ( 2 ), and the connectable transmission component ( 4 ) is a different transmission shaft ( 5 ).

8. A shift element ( 7 ) for a gear shifting device according to claim 1 , comprising:
a ring-shaped body ( 8 ) provided on an inner circumference thereof with toothing ( 9 ) by which the body ( 8 ) is guided in a torque-proof and axially displaceable manner by engagement with corresponding toothing ( 6 ) of the radial inner transmission component ( 1 );
the first shifting gate ( 14 ) and the second shifting gate ( 15 ) each having axially changing courses provided on an inner diameter or an outer diameter of the body; and
wherein the respective assigned shift pins ( 16 , 17 ) of an additional adjacent transmission component ( 18 ) are radially displaceable into the shift gates to axially shift the shift element between a neutral position and a shift position.

9. The shift element ( 7 ) according to claim 8 , wherein the body ( 8 ) further comprises the axially protruding and revolving claw toothing ( 10 ) at the axial front side thereof.

10. The shift element ( 7 ) according to claim 8 , wherein the two shift gates ( 14 , 15 ) are in the outer diameter of the body ( 8 ) and run opposite to each other, the shift gates ( 14 , 15 ) having a transition area with the outer diameter of the body at respective ends thereof.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Volpert Bastian

Classifications

• F16H2063/3056

  using cam or crank gearing · CPC title

• F16H63/18 Primary

  the final actuating mechanism comprising cams · CPC title

• Y10T74/20177

  Particular element [e.g., shift fork, template, etc.] · CPC title

• F16H63/304

  the final output mechanisms comprising elements moved by electrical or magnetic force (band brake actuating mechanisms F16H63/3003) · CPC title

• F16H2063/305

  using electromagnetic solenoids · CPC title