Dual drive gear shift assembly for vehicle gearbox
AssigneeBorgWarner Inc.
InventorsBo Yang, Chandreshwar Rao, Ashton Anderson
Life of this patent
Estimating the term…
Abstract
A dual drive gear shift assembly for a vehicle gearbox such as an automotive transfer case is depicted and described. Certain features and functions previously carried out by multiple parts in past devices are combined in single components in the dual drive gear shift assembly, furnishing a reduced quantity of overall parts and a reduction in overall weight. The dual drive gear shift assembly, per certain implementations, can include a shift cam housing, a sensor plate, a dual drive gear, and a thrust washer, among other possible components. The sensor plate and dual drive gear can be attached together, and one or more tabs of the thrust washer can be received in one or more complementary slots of the shift cam housing.
Claims18
A dual drive gear shift assembly for a vehicle gearbox, the dual drive gear shift assembly comprising:
- a shift cam housing;
- a sensor plate situated adjacent a periphery of the shift cam housing;
- a dual drive gear situated adjacent the periphery of the shift cam housing and constrained to the sensor plate via attachment therebetween, the dual drive gear having a gear main body and at least one projection extending axially from the gear main body depending from the gear main body, radially inboard from an outer diameter of the gear main body and radially outboard from an inner diameter of the gear main body, the at least one projection engageable with an apply cam of the dual drive gear shift assembly amid use of the dual drive gear shift assembly;
- and
- a thrust washer, wherein the sensor plate is located axially in a first direction relative to the dual drive gear and the thrust washer is located axially in a second direction opposite the first direction relative to the dual drive gear.
A dual drive gear shift assembly for a vehicle gearbox, the dual drive gear shift assembly comprising:
- a shift cam housing having at least one slot residing therein, the at least one slot having a circumferential open end configured to receive circumferential insertion of a tab, the at least one slot having a circumferential closed end;
- a sensor plate situated adjacent a periphery of the shift cam housing;
- a dual drive gear situated adjacent the periphery of the shift cam housing and adjacent the sensor plate;
- and
- a thrust washer having a washer main body and at least one tab extending radially inboard from the washer main body, the thrust washer situated adjacent the periphery of the shift cam housing and adjacent the dual drive gear, the at least one tab received in circumferential open end the at least one slot of the shift cam housing and thereby constraining axial movement of the thrust washer with respect to the shift cam housing and restricting axial movement of the dual drive gear in one axial direction.
A dual drive gear shift assembly for a vehicle gearbox, the dual drive gear shift assembly comprising:
- a shift cam housing, at least one slot residing in the shift cam housing and at least one cutout residing in the shift cam housing, wherein the at least one slot has a circumferential open end and a circumferential closed end;
- a sensor plate situated adjacent a periphery of the shift cam housing;
- a dual drive gear situated adjacent the periphery of the shift cam housing, the dual drive gear and sensor plate being attached to each other, the dual drive gear having at least one axially-extending projection;
- a thrust washer situated adjacent the periphery of the shift cam housing and having at least one radially-extending tab;
- and
- a base cam having at least one radially-extending boss;
- wherein, in assembly of the dual drive gear shift assembly, the at least one radially-extending tab of the thrust washer is received in the at least one slot of the shift cam housing and the at least one radially-extending boss of the base cam is received in the at least one cutout of the shift cam housing such that the at least one radially-extending boss of the base cam occupies the at least one cutout at the circumferential open end of the at least one slot and constrains circumferential movement of the thrust washer relative to the shift cam housing.
Dependencies are inferred from the claim text.