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

Patent metadata

Field	Value
Publication number	US-9464714-B2
Application number	US-201314443734-A
Country	US
Kind code	B2
Filing date	Oct 10, 2013
Priority date	Nov 19, 2012
Publication date	Oct 11, 2016
Grant date	Oct 11, 2016

Abstract

A gear shifting device includes a shifting element that is axially shiftable into a shift position through the interaction of a shift pin with an associated groove-like shift gate that changes course in an axial direction. The shift element features, on an inner or outer diameter the shift gate, while the respective shift pin is arranged in a radially displaceable manner opposite the shift gate on a transmission component adjacent to the shift element.

First claim

The invention claimed is:

1. A gear shifting device, comprising:
a first rotatably drivable transmission component;
a shift element arranged in a torque-proof and axially displaceable manner on the first transmission component, the shift element axially movable into a shift position, the shift element further comprising a second shift gate defined in an inner diameter surface of the shift element as a groove that changes course in the axial direction along the shift element;
a second transmission component arranged adjacent to and connectable in a torque proof manner with the first transmission component upon an axial shift movement of the shift element to the shift position;
a third transmission component adjacent to the shift element and further comprising a radially displaceable second shift pin radially opposite to the second shift gate, the second shift pin triggered by an actuator;
upon triggering, the second shift pin moves radially into the second shift gate, wherein the axially changing course of the second shift gate moves the shift element from a neutral position into the shift position to connect the first transmission component in a torque proof manner to the second transmission component; and
a first shift gate defined in an axially changing course as a groove on an outer diameter surface of the shift element radially opposite to a first shift pin, the first shift pin triggered by a respective actuator, wherein upon triggering, the first shift pin moves radially into the first shift gate causing axial shift movement of the shift element back into the neutral position.

2. The gear shifting device according to claim 1 , wherein the first shift pin is provided on a radially inner side of a surrounding housing of the transmission.

3. The gear shifting device according to claim 2 , wherein the shift element comprises a claw toothing at an axial front side thereof towards the second transmission component, the second transmission component comprising a coupling body that is axially movable on the second transmission component and has a complimentary toothing on a side thereof facing the shift element, the coupling body biased towards the shift element by a spring element, wherein in the shift position of the shift element, claw toothing on the shift element meshes with the complimentary tooting on the coupling body.

4. The gear shifting device according to claim 3 , wherein the second shift pin and associated actuator are on a radial outer side of a shaft stub of the coupling body that protrudes axially beyond the complimentary toothing towards the first transmission component.

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

6. A shift element for use in a gear shifting device according to claim 1 , the shift element comprising a ring-shaped body having axially running toothing on an inner circumferential surface by which the body is guided axially along the first transmission component, the first shift gate defined in an outer diameter surface of the body with its axially changing course, and the second shift gate defined on an inner diameter surface of the body with its axially changing course.

7. The shift element according to claim 6 , wherein the body further comprises claw toothing on an axial front side thereof.

8. The shift element according to claim 6 , wherein the axially changing courses of the first shift gate and the second shift gate run in opposite axial directions and further comprise transition areas.

9. A coupling body for use in a gear shifting device according to claim 2 , the coupling body connectable in a torque-proof and axially movable manner to the second transmission component, the coupling body further comprising the second shift pin configured to engage in a shift gate defined in the shift element with an axially changeable course.

10. The coupling body according to claim 9 , further comprising an axially protruding toothing on an end thereof, and a shaft stub that axially projects through the toothing, the second shift pin with associated actuator configured on the shaft stub.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Volpert Bastian

Classifications

• F16H63/38

  Detents · CPC title

• F16H63/04 Primary

  a single final output mechanism being moved by a single final actuating mechanism · CPC title

• F16H2063/3056

  using cam or crank gearing · CPC title

• Y10T74/20177

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

• F16H63/3043

  comprising friction clutches or brakes · CPC title