Angle-Adjustable Tripod Universal Joint

• US 20190323650A1
• Filed: 03/03/2017
• Published: 10/24/2019
• Est. Priority Date: 12/26/2016
• Status: Active Grant

• Current Assignee: Shanghai GKN HUAYU Driveline Systems Co., Ltd.
• Original Assignee: Shanghai GKN HUAYU Driveline Systems Co., Ltd.
• Inventors: LI, Xiaotian, PENG, Tangjun, WANG, Delin, ZHANG, Zhenghua, JIN, Lu
• Granted Patent: US 11,384,798 B2
• Time in Patent Office: Days
• CPC Class Codes: F16D 2003/2023 with linear rolling bearings between raceway and trunnion mounted shoes
• CPC Class Codes: F16D 2003/2026 with trunnion rings, i.e. with tripod joints having rollers supported by a ring on the trunnion
• CPC Class Codes: F16D 3/202 one coupling part having radially projecting pins, e.g. tripod joints
• CPC Class Codes: F16D 3/2055 having three pins, i.e. true tripod joints
• CPC Class Codes: F16M 11/16 Details concerning attachment of head-supporting legs, with or without actuation of locking members thereof
• CPC Class Codes: F16M 11/2078 with ball-joint ball-jointed hinges F16C11/06
• CPC Class Codes: F16M 11/242 by spreading of the legs F16M11/32 takes precedence
• CPC Class Codes: Y10S 464/905 Torque transmitted via radially extending pin

Abstract

The present disclosure relates to an angle-adjustable tripod universal joint, which includes a tripod, 3 rollers and a universal joint outer part, an inner wall of the universal joint outer part is provided with 3 roller track, each roller is disposed in the roller track and rolls along the roller track, each spherical shaft head on the tripod is rotatably disposed in an inner cavity of the roller, the inner wall of the roller track is provided with a guiding groove, the peripheral shape of the roller is cylindrical, a bottom surface of the guiding groove is a plane surface, two side surfaces of the guiding groove are flat surfaces perpendicular to the plane surface, a part of the peripheral surface of the roller is inserted into the guiding groove, and the peripheral surface of the roller is tangent to the plane surface.

Claims

1. An angle-adjustable tripod universal joint, comprising

a tripod;

3 rollers; and

a universal joint outer part, wherein

an inner wall of the universal joint outer part is provided with 3 roller tracks,

each roller is disposed in a corresponding roller track and rolls along the corresponding roller track,

each spherical shaft head on the tripod is rotatably disposed in an inner cavity of a corresponding roller,

the inner wall of the roller track is provided with a guiding groove,

the roller has a cylindrical peripheral shape,

a bottom surface of the guiding groove is a plane surface,

two side surfaces of the guiding groove are flat surfaces perpendicular to the plane surface,

a part of the peripheral surface of the roller is inserted in the guiding groove, and

the peripheral surface of the roller is tangent to the plane surface.

2. The angle-adjustable tripod universal joint as in claim 1, wherein the bottom surface of the guiding groove is provided with an elongated slot extending along the length direction of the guiding groove.

3. The angle-adjustable tripod universal joint as in claim 1, wherein the peripheral surface of the roller is provided with a circle of annular groove, and the annular groove is disposed in the axial middle part of the roller.

4. The angle-adjustable tripod universal joint as in claim 1, wherein the width of the guiding groove is greater than the axial length of the roller.

5. The angle-adjustable tripod universal joint as in claim 1, wherein the inner cavity of the roller is an inner cylindrical cavity coaxial with the periphery of the roller.

6. The angle-adjustable tripod universal joint as in claim 1, wherein one guiding groove is provided, the guiding groove is located on a center line of the roller track, and a part of the periphery of the roller is inserted in the guiding groove.

7. The angle-adjustable tripod universal joint as in claim 1, wherein two guiding grooves are provided, the two guiding grooves are symmetrically distributed, and the peripheries of two sides of the roller are respectively inserted in the two guiding grooves.