DE-102025146045-A1 - constant velocity joint arrangement

DE102025146045A1DE 102025146045 A1DE102025146045 A1DE 102025146045A1DE-102025146045-A1

Abstract

The invention relates to a constant velocity joint assembly. The constant velocity joint assembly comprises a first constant velocity joint with a first outer race and a first shaft, a second constant velocity joint with a second outer race and a second shaft, a connecting element with a plate-shaped area arranged between the first outer race and the second outer race, a first coupling section configured to allow engagement of an end section of the first shaft with the first coupling section, and a second coupling section configured to allow engagement of an end section of the second shaft with the second coupling section, and a lubricating element for grease lubrication of the connecting element.

Inventors

Chung Heon Hyun

Assignees

Hyundai Wia Corporation

Dates

Publication Date: 20260513
Application Date: 20251107
Priority Date: 20241108

Claims (17)

Constant velocity joint assembly comprising: a first constant velocity joint with a first outer race and a first shaft; a second constant velocity joint with a second outer race and a second shaft; a connecting link with a plate-shaped area arranged between the first outer race and the second outer race, a first coupling section configured to allow an end section of the first shaft to engage with the first coupling section, and a second coupling section configured to allow an end section of the second shaft to engage with the second coupling section; and a lubricating element for greasy lubrication of the connecting link.
constant velocity joint arrangement according to Claim 1 , wherein the lubricating element has a lubrication groove which is formed in at least one of the contact surfaces between the first outer running ring and the plate-shaped area or between the second outer running ring and the plate-shaped area.
constant velocity joint arrangement according to Claim 2 , wherein the lubrication groove is formed in one or both surfaces of the plate-shaped area.
constant velocity joint arrangement according to Claim 2 , wherein the first outer running ring has a receiving recess formed therein to allow the seat of the plate-shaped area therein, and wherein the lubrication groove is formed in the receiving recess of the first outer running ring.
constant velocity joint arrangement according to Claim 2 , wherein the lubrication groove is circular.
constant velocity joint arrangement according to Claim 2 , wherein the lubrication groove is formed in a concentric pattern.
constant velocity joint arrangement according to Claim 2 , wherein the lubrication groove is formed in a radial pattern.
constant velocity joint arrangement according to Claim 2 , wherein the lubrication groove is formed in a combination of concentric and radial patterns.
constant velocity joint arrangement according to Claim 1 , wherein the lubricating element includes a lubrication opening which allows an interior of at least one of the first coupling section or of the second coupling section to communicate with an exterior.
constant velocity joint arrangement according to Claim 9 , wherein the plate-shaped area has a hollow center to allow the interior of the first coupling section and the interior of the second coupling section to be interconnected.
constant velocity joint arrangement according to Claim 9 , wherein the lubrication opening extends through the plate-shaped area in such a way that it extends from an outer circumferential surface of the plate-shaped area to an inner circumferential surface of the plate-shaped area.
constant velocity joint arrangement according to Claim 9 , wherein the lubrication opening has a section that extends through the plate-shaped area in a radial direction.
constant velocity joint arrangement according to Claim 9 , wherein the lubrication opening extends through the first coupling section in such a way that it extends from an outer circumferential surface of the first coupling section to an inner circumferential surface of the first coupling section.
constant velocity joint arrangement according to Claim 9 , wherein the lubrication opening is provided in a plurality and wherein this plurality of lubrication openings is arranged in a circumferential direction.
constant velocity joint arrangement according to Claim 1 , wherein the first constant velocity joint further comprises a first inner race connected to the first shaft and arranged in the first outer race, and a ball arranged 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 arranged in the second outer race, and a second ball arranged between the second inner race and the second outer race, wherein the end section of the first shaft has a region which, during joint movement, is in direct contact with the first coupling section, wherein the region in direct contact with the first coupling section is spherical or ball-shaped, and wherein the end section of the second shaft has a region which, during joint movement, is in direct contact with the second coupling section The section is located, wherein the area in direct contact with the second coupling section is spherical or ball-shaped, and wherein the constant velocity joint arrangement satisfies at least one of the following parameter relationships: 1,005 ≤ A / B ≤ 1,020 1,005 ≤ C / D ≤ 1,020, where A represents an inner diameter of the first coupling section B, B represents a diameter of the spherical or ball-shaped area of the end section of the first shaft, C represents an inner diameter of the second coupling section, and D represents a diameter of the spherical or ball-shaped area of the second end section of the second shaft.
constant velocity joint arrangement according to Claim 15 , which furthermore satisfies at least one of the following parameter relationships: 0,2 ≤ E / F ≤ 0,3 0,2 ≤ E / G ≤ 0,3, where E represents a distance between the center of the spherical or spherical region of the end section of the first shaft and the center of the spherical or spherical region of the end section of the second shaft, F represents a pitch circle diameter (PCD) of the first constant velocity joint, and G represents a pitch circle diameter (PCD) of the second constant velocity joint.
constant velocity joint arrangement according to Claim 15 , which furthermore fulfills at least one of the following parameter relationships: 1,0 ≤ H / F ≤ 1,1 1,0 ≤ H / G ≤ 1,1, where F represents a pitch circle diameter (PCD) of the first constant velocity joint, G represents a pitch circle diameter (PCD) of the second constant velocity joint, and H represents a distance between a joint center of the first constant velocity joint and a joint center of the second constant velocity joint.

Description

BACKGROUND 1. Field of the invention The present invention relates to a constant velocity joint arrangement. 2. Description of the state of the art A constant velocity joint is used to transmit a rotational force between a drive shaft and a driven shaft that are arranged at an angle to each other, without changing the angular velocity. To achieve a larger articulation angle, a design with two combined constant velocity joints has been proposed. Such a design is used, for example, in the US Patent No. 3,017,755 described. BRIEF DESCRIPTION OF THE INVENTION One aspect of the present invention is the provision of a constant velocity joint arrangement suitable for improving service life and functionality. A constant velocity joint arrangement according to the present invention comprises a first constant velocity joint with a first outer running ring and a first shaft, a second constant velocity joint with a second outer running ring and a second shaft, a connecting member with a plate-shaped area arranged between the first outer running ring and the second outer running ring, a first coupling section configured to allow engagement of an end section of the first shaft with the first coupling section, and a second coupling section configured to allow engagement of an end section of the second shaft with the second coupling section, and a lubricating element for grease lubrication of the connecting member. The lubricating element can have a lubrication groove that is formed in at least one of the contact surfaces between the first outer running ring and the plate-shaped area or between the second outer running ring and the plate-shaped area. The lubrication groove can be formed in one or both surfaces of the plate-shaped area. The first outer running ring may have a receiving recess formed therein, which allows the plate-shaped area to be seated in it, and the lubrication groove may be formed in the receiving recess in the first outer running ring. The lubrication groove can be circular. The lubrication groove can be formed in a concentric pattern. The lubrication groove can be formed in a radial pattern. The lubrication groove can be formed in a combination of concentric and radial patterns. The lubricating element may include a lubrication opening that allows the interior of at least one of the first coupling section or the second coupling section to communicate with the outside. The plate-shaped area may have a hollow center, which allows the interior of the first coupling section and the interior of the second coupling section to communicate with each other. The lubrication opening can penetrate the plate-shaped section in such a way that it extends from the outer circumferential surface of the plate-shaped area to the inner circumferential surface of the plate-shaped area. The lubrication opening may have a section that extends through the plate-shaped area in a radial direction. The lubrication opening can extend through the first coupling section in such a way that it extends from the outer circumferential surface of the first coupling section to the inner circumferential surface of the first coupling section. The lubrication opening can be provided in multiples, and these multiple lubrication openings can be arranged in a circumferential direction. The first constant velocity joint can further comprise a first inner race connected to the first shaft and arranged in the first outer race, and a first ball arranged between the first inner race and the first outer race, and the second constant velocity joint can further comprise a second inner race connected to the second shaft and arranged in the second outer race, and a second ball arranged between the second inner The end section of the first shaft can have a spherical area that is in direct contact with the first coupling section during bending, and the second end section of the second shaft can have a spherical area that is in direct contact with the second coupling section during joint movement. The constant velocity joint arrangement can satisfy at least one of the following parameter relationships. 1,005≤A/B≤1,0201,005≤C/D≤1,020 Here, A represents the inner diameter of the first coupling section, B represents the diameter of the spherical area of the end section of the first shaft, C represents the inner diameter of the second coupling section, and D represents the diameter of the spherical area of the end section of the second shaft. Furthermore, the constant velocity joint arrangement can satisfy at least one of the following parameter relationships. 0,2≤E/F≤0,30,2≤E/G≤0,3 Here, E represents a distance between the center of the spherical area of the end section of the first shaft and the center of the spherical area of the end section of the second shaft, F represents the pitch circle diameter (PCD) of the first constant velocity joint, and G represents the pitch circle diameter (PCD) of the second constant velocity joint. Furthermore, the constant v