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US 2016/0312838 A1Published application
Shift device with synchronizer
AssigneeKyowa Metal Works Co., Ltd.
InventorKazuyoshi HIRAIWA
Life of this patent
Estimating the term…
Abstract
A shift device includes an output shaft, a hub, a speed gear, a sleeve, a synchronizer ring, lever members, and a spring. The lever members have torque receiving portions contactable with projections of the synchronizer ring to receive friction torque from the projection. Contact positions of the torque receiving portions and the projections in a synchronization operation are set at a hub side of the lever members and within an axial-directional distance being less than a thickness of the lever member between the points of support of the lever members and the contact positions.
Claims20
A shift device with a synchronizer comprising:
- a shaft (10) that is capable of transmitting a power;
- a hub (12) that is fixed on the shaft (10);
- a sleeve (20) that is provided with splines (20a) and slanted surfaces (20d), the sleeve (20) being supported on the hub (12) slidably in an axial direction;
- a speed gear (8;
- 16;
- 18) that is provided with a cone surface (8b) and splines (8a) that are capable of engaging with the splines (20a) of the sleeve (20);
- a synchronizer ring (22) that is formed with a plurality of projections (22c) extending in an axial direction toward the hub (12) and also with a plurality of pressure receiving surfaces (22b);
- and
- a plurality of lever members (24) that have a top portion (24c), arm portions (24g) extending in a direction depart from the top portion (24c), and an action surface (24f), the top portions (24c) being contactable with the slanted surfaces (20d) of the sleeve (20) to function as points (W) of effort in a leverage operation, the arm portions (24g) of the lever members (24) being contactable with hub (12) to function as points (X) of support in the leverage operation, the action surfaces (24f) being located at speed-gear sides of the lever members (24) and between the points (W) of effort and the points (X) of support to be contactable with the synchronizer ring (22) to function as points (Y) of action in the leverage operation, and the lever members (24) being provided with a plurality of torque receiving portions (24a) that are capable of receiving torque from the projections (22c) of the synchronizer ring (22), wherein
- the lever members (24) and the synchronizer ring (22) have contact positions (Z) where the torque receiving portions (24a) and the projections (22c) are capable of contacting with each other in a synchronization operation when the sleeve (20) is moved toward the speed gear (8;
- 16;
- 18), and wherein
- the contact positions (Z) are set at a hub side of the lever members (24) and within an axial-directional distance being less than a thickness of the lever member (24) between the points of support (X) and the contact positions (Z).
10 more elements
A shift device with a synchronizer comprising:
- a shaft (10) that is capable of transmitting a power;
- a hub (12) that is fixed on the shaft (10);
- a sleeve (20) that is provided with splines (20a) and slanted surfaces (20d), the sleeve (20) being supported on the hub (12) slidably in an axial direction;
- a speed gear that is provided with a cone surface (8b) and splines (8a) that are capable of engaging with the splines (20a) of the sleeve (20);
- a synchronizer ring (22) that is formed with a plurality of projections (22c) extending in an axial direction toward the hub (12) and also with a plurality of pressure receiving surfaces (22b);
- and
- a plurality of lever members (24) that have a top portion (24c), arm portions (24g) extending in a direction depart from the top portion (24c), and an action surface (24f), the top portions (24c) being contactable with the slanted surfaces (20d) of the sleeve (20) to function as points (W) of effort in a leverage operation, the arm portions (24g) of the lever members (24) being contactable with hub (12) to function as points of support (X) in the leverage operation, the action surfaces (24f) being located at speed-gear sides of the lever members (24) and between the points (W) of effort and the points (X) of support to be contactable with the synchronizer ring (22) to function as points (Y) of action in the leverage operation, and the lever members (24) being provided with a plurality of torque receiving portions (24a) that are capable of receiving torque from the projections (22c) of the synchronizer ring (22), wherein
- the lever members (24) and the synchronizer ring (22) have contact positions (Z) where the torque receiving portions (24a) and the projections (22c) are capable of contacting with each other in a synchronization operation when the sleeve (20) is moved toward the speed gear (8;
- 16;
- 18), and wherein
- the contact positions (Z) are set at a hub side of the lever members (24) and within an axial-directional distance being less than a thickness of the lever member (24) between the points of support (X) and the contact positions (Z).
8 more elements
Dependencies are inferred from the claim text.