CN-121993505-A - Constant velocity joint assembly

Abstract

The present disclosure relates to a constant velocity joint assembly. The constant velocity joint assembly includes a first constant velocity joint including a first outer race and a first shaft, a second constant velocity joint including a second outer race and a second shaft, a connection including a plate-like portion disposed between the first outer race and the second outer race, a first connection portion configured to allow an end portion of the first shaft to engage therewith, and a second connection portion configured to allow an end portion of the second shaft to engage therewith, and a lubrication element for grease lubrication of the connection.

Inventors

• Xuan Zhongxian

Assignees

• 现代威亚株式会社

Dates

Publication Date

20260508

Application Date

20251104

Priority Date

20241108

Claims (17)

1. 1. A constant velocity joint assembly comprising: a first constant velocity joint including a first outer race and a first shaft; A second constant velocity joint including a second outer race and a second shaft; A connection including a plate-like portion disposed between the first outer race and the second outer race, a first connection portion configured to allow an end portion of the first shaft to engage therewith, and a second connection portion configured to allow an end portion of the second shaft to engage therewith, and And the lubricating element is used for grease lubrication of the connecting piece.
2. 2. The constant velocity joint assembly according to claim 1, wherein the lubrication element includes a lubrication groove formed in at least one of a contact surface between the first outer race and the plate portion or a contact surface between the second outer race and the plate portion.
3. 3. A constant velocity joint assembly according to claim 2, wherein the lubrication groove is formed in one or both surfaces of the plate-like portion.
4. 4. The constant velocity joint assembly according to claim 2, wherein the first outer race includes a receiving recess formed therein to allow the plate-like portion to fit into the receiving recess, and Wherein the lubrication groove is formed in the receiving recess in the first outer race.
5. 5. The constant velocity joint assembly according to claim 2, wherein the lubrication groove is formed in a circular shape.
6. 6. The constant velocity joint assembly according to claim 2, wherein the lubrication grooves are formed in a concentric pattern.
7. 7. The constant velocity joint assembly according to claim 2, wherein the lubrication grooves are formed in a radial pattern.
8. 8. The constant velocity joint assembly according to claim 2, wherein the lubrication grooves are formed in a combination of concentric and radial patterns.
9. 9. The constant velocity joint assembly according to claim 1, wherein the lubrication element includes a lubrication hole that allows an interior of at least one of the first connection portion or the second connection portion to communicate with an exterior thereof.
10. 10. The constant velocity joint assembly according to claim 9, wherein the plate-like portion has a hollow center to allow the inside of the first connecting portion and the inside of the second connecting portion to communicate with each other.
11. 11. The constant velocity joint assembly according to claim 9, wherein the lubrication hole penetrates the plate-like portion to extend from an outer peripheral surface of the plate-like portion to an inner peripheral surface of the plate-like portion.
12. 12. The constant velocity joint assembly according to claim 9, wherein the lubrication hole includes a section passing radially through the plate-like portion.
13. 13. The constant velocity joint assembly according to claim 9, wherein the lubrication hole penetrates the first connection portion to extend from an outer peripheral surface of the first connection portion to an inner peripheral surface of the first connection portion.
14. 14. The constant velocity joint assembly according to claim 9, wherein the lubrication holes are provided in plurality, and the plurality of lubrication holes are arranged in the circumferential direction.
15. 15. The constant velocity joint assembly according to claim 1, wherein the first constant velocity joint further comprises a first inner race connected to the first shaft and disposed within the first outer race, and a first ball disposed between the first inner race and the first outer race, Wherein the second constant velocity joint further comprises a second inner race connected to the second shaft and disposed within the second outer race, and a second ball disposed between the second inner race and the second outer race, Wherein the end portion of the first shaft has a portion that directly contacts the first connection portion during the hinge motion, and the portion that directly contacts the first connection portion is formed in a spherical shape, Wherein the end portion of the second shaft has a portion that is in direct contact with the second connecting portion during the hinge motion, and the portion that is in direct contact with the second connecting portion is formed in a spherical shape, and Wherein the constant velocity joint assembly satisfies at least one of the following parameter relationships: 1.005≤A/B≤1.020 1.005≤C/D≤1.020 Wherein a represents an inner diameter of the first connection portion, B represents a diameter of a spherical portion of the end portion of the first shaft, C represents an inner diameter of the second connection portion, and D represents a diameter of a spherical portion of the end portion of the second shaft.
16. 16. The constant velocity joint assembly according to claim 15, wherein the constant velocity joint assembly further satisfies at least one of the following parameter relationships: 0.2≤E/F≤0.3 0.2≤E/G≤0.3 wherein E represents a distance between a center of the spherical portion of the end portion of the first shaft and a center of the spherical portion of the end portion of the second shaft, F represents a Pitch Circle Diameter (PCD) of the first constant velocity universal joint, and G represents a Pitch Circle Diameter (PCD) of the second constant velocity universal joint.
17. 17. The constant velocity joint assembly according to claim 15, wherein the constant velocity joint assembly further satisfies at least one of the following parameter relationships: 1.0≤H/F≤1.1 1.0≤H/G≤1.1 Wherein F represents a Pitch Circle Diameter (PCD) of the first constant velocity universal joint, G represents a Pitch Circle Diameter (PCD) of the second constant velocity universal joint, and H represents a distance between a center of articulation of the first constant velocity universal joint and a center of articulation of the second constant velocity universal joint.

Description

Constant velocity joint assembly Technical Field The present disclosure relates to a constant velocity joint assembly. Background Constant velocity joints are used to transmit rotational power between a drive shaft and a driven shaft disposed at an angle relative to the drive shaft without changing the angular velocity. In order to achieve a higher articulation angle, a structure combining two constant velocity joints has been proposed. Such a structure is disclosed, for example, in U.S. patent No.3,017,755. Disclosure of Invention An aspect of the present disclosure is to provide a constant velocity joint assembly capable of improving durability and operability. A constant velocity joint assembly according to the present disclosure includes a first constant velocity joint including a first outer race and a first shaft, a second constant velocity joint including a second outer race and a second shaft, a joint including a plate portion disposed between the first outer race and the second outer race, a first connecting portion configured to allow an end portion of the first shaft to engage the first outer race, and a second connecting portion configured to allow an end portion of the second shaft to engage the second shaft, and a lubrication element for grease lubrication of the joint. The lubrication element may include a lubrication groove formed in at least one of a contact surface between the first outer race and the plate portion or a contact surface between the second outer race and the plate portion. The lubrication grooves may be formed in one surface or both surfaces of the plate-like portion. The first outer race may include a receiving recess formed therein to allow the plate-like portion to be fitted into the receiving recess, and the lubrication groove may be formed therein. The lubrication groove may be formed in a circular shape. The lubrication grooves may be formed in a concentric pattern. The lubrication grooves may be formed in a radial pattern. The lubrication grooves may be formed in a combination of concentric and radial patterns. The lubrication element may include a lubrication hole that allows the interior of at least one of the first connection portion or the second connection portion to communicate with the exterior. The plate-like portion may have a hollow center to allow the inside of the first connection portion and the inside of the second connection portion to communicate with each other. The lubrication holes may penetrate the plate-like portion to extend from an outer peripheral surface of the plate-like portion to an inner peripheral surface of the plate-like portion. The lubrication hole may include a section penetrating the plate-like portion in a radial direction. The lubrication hole may penetrate the first connection portion to extend from an outer circumferential surface of the first connection portion to an inner circumferential surface of the first connection portion. The lubrication holes may be provided in plurality, and the plurality of lubrication holes may be arranged in the circumferential direction. The first constant velocity joint may further include a first inner race connected to the first shaft and disposed within the first outer race, and a first ball disposed between the first inner race and the first outer race, and the second constant velocity joint may further include a second inner race connected to the second shaft and disposed within the second outer race, and a second ball disposed between the second inner race and the second outer race. The end portion of the first shaft may have a portion that is in direct contact with the first connection portion and formed in a spherical shape during the hinge motion, and the end portion of the second shaft may have a portion that is in direct contact with the second connection portion and formed in a spherical shape during the hinge motion. The constant velocity joint assembly may satisfy at least one of the following parameter relationships. 1.005≤A/B≤1.020 1.005≤C/D≤1.020 Here, a represents an inner diameter of the first connection portion, B represents a diameter of the spherical portion of the end portion of the first shaft, C represents an inner diameter of the second connection portion, and D represents a diameter of the spherical portion of the end portion of the second shaft. The constant velocity joint assembly may also satisfy at least one of the following parameter relationships. 0.2≤E/F≤0.3 0.2≤E/G≤0.3 Here, E represents the distance between the center of the spherical portion of the end portion of the first shaft and the center of the spherical portion of the end portion of the second shaft, F represents the pitch circle diameter (PCD, PITCH CIRCLE DIAMETER) of the first constant velocity universal joint, and G represents the Pitch Circle Diameter (PCD) of the second constant velocity universal joint. The constant velocity joint assembly may also satisfy at least one of the following parameter r