Constant velocity universal joint

Patent metadata

Field	Value
Publication number	US-11525484-B2
Application number	US-201816645032-A
Country	US
Kind code	B2
Filing date	Sep 26, 2018
Priority date	Sep 28, 2017
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

A constant velocity universal joint includes outer and inner joint members that transmit torque while allowing angular displacement via balls, a power transmission shaft connected to the inner joint member in a torque transmittable manner, and a detachable mechanism between the inner joint member and the power transmission shaft to detach the power transmission shaft from the inner joint member. The detachable mechanism includes a cylindrical member externally fit onto the power transmission shaft, spheres movable in a radial direction in the cylindrical member, and an annular member movable in an axial direction on an outer periphery of the cylindrical member. Locking claws are provided at an end of an inner joint member side of the annular member, and a locking groove is provided at an end of an annular member side of the inner joint member. The locking claws are fitted into the locking groove.

First claim

The invention claimed is:

1. A constant velocity universal joint comprising:
an outer joint member;
an inner joint member that transmits torque with the outer joint member while allowing angular displacement via a torque transmitting member;
a power transmission shaft connected to the inner joint member in a torque transmittable manner; and
a detachable mechanism provided between the inner joint member and the power transmission shaft so as to detach the power transmission shaft from the inner joint member, wherein
the detachable mechanism includes a cylindrical member externally fit onto the power transmission shaft, a fixing member accommodated to be movable in a radial direction in the cylindrical member, and an annular member disposed to be movable in an axial direction on an outer periphery of the cylindrical member,
a locking claw is provided at an end of an inner joint member side of the annular member, and a locking groove is provided at an end of an annular member side of the inner joint member, and the locking claw of the annular member is fitted into the locking groove of the inner joint member, and
an inclined portion is provided at the end of the annular member side of the inner joint member, so as to guide the locking claw of the annular member into the locking groove while expanding a diameter of the locking claw.

2. The constant velocity universal joint according to claim 1 , wherein a slit portion is provided at the end of the annular member side of the inner joint member, so as to detach the locking claw of the annular member from the locking groove.

3. A constant velocity universal joint comprising:
an outer joint member;
an inner joint member that transmits torque with the outer joint member while allowing angular displacement via a torque transmitting member;
a power transmission shaft connected to the inner joint member in a torque transmittable manner; and
a detachable mechanism provided between the inner joint member and the power transmission shaft so as to detach the power transmission shaft from the inner joint member, wherein
the detachable mechanism includes a cylindrical member externally fit onto the power transmission shaft, a fixing member accommodated to be movable in a radial direction in the cylindrical member, and an annular member disposed to be movable in an axial direction on an outer periphery of the cylindrical member,
a locking claw is provided at an end of an inner joint member side of the annular member, and a locking groove is provided at an end of an annular member side of the inner joint member, and the locking claw of the annular member is fitted into the locking groove of the inner joint member,
the annular member is provided with a portion that restrains radially outward movement of the fixing member and a portion that permits the radially outward movement of the fixing member,
a state in which the radially outward movement of the fixing member is restrained and a state in which the radially outward movement of the fixing member is permitted are switched by axial movement of the annular member, and
when the radially outward movement of the fixing member is restrained by the annular member, the fixing member is engaged with the power transmission shaft.

4. The constant velocity universal joint according to claim 3 , wherein an inclined portion is provided at the end of the annular member side of the inner joint member, so as to guide the locking claw of the annular member into the locking groove while expanding a diameter of the locking claw.

5. The constant velocity universal joint according to claim 4 , wherein a slit portion is provided at the end of the annular member side of the inner joint member, so as to detach the locking claw of the annular member from the locking groove.

6. The constant velocity universal joint according to claim 3 , wherein a slit portion is provided at the end of the annular member side of the inner joint member, so as to detach the locking claw of the annular member from the locking groove.

Assignees

• Ntn Toyo Bearing Co Ltd

Inventors

• Funahashi Masashi

Classifications

• F16D1/116 Primary

  the interengaging parts including a continuous or interrupted circumferential groove in the surface of one of the coupling parts (circlips for retaining hubs on shafts F16B21/18) · CPC title

• F16D3/223

  the rolling members being guided in grooves in both coupling parts · CPC title

• Y10S464/906

  Torque transmitted via radially spaced balls · CPC title

• Y10T403/60

  Biased catch or latch · CPC title

• Y10S403/06

  Reciprocable ball detent · CPC title