JPH04117926U - Constant velocity joint - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the torque transmission ball from coming off the groove of the outer race due to the impact force generated when the constant velocity joint is bent for assembly on an actual vehicle. [Structure] In order to increase the engagement of the snap ring 25 with the torque transmission ball 22, the snap ring 25 is provided with a protrusion 27 bent inward in the radial direction.
This snap ring 25 is connected to the annular groove 2 of the outer race 12.
Use it by inserting it into 4.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a constant velocity joint.

0002

[Conventional technology]

As a conventional constant velocity joint, the inner peripheral surface of a cylindrical outer race with one end open. Slide surfaces and grooves extending in the axial direction are formed alternately in the circumferential direction to prevent the outer race from opening. An annular groove is formed on the inner periphery of the mouth end, a snap ring is inserted into this annular groove, and a snap ring is inserted into the outer periphery. A cage forming an arc is slidably inserted into the sliding surface, and the inner periphery of this cage is Fit the inner race to the surface, and insert a groove extending in the axial direction on the outer peripheral surface of the inner race in the circumferential direction. Multiple grooves are formed in the direction of the outer race and grooves in the inner race to transmit rolling torque. There is one in which a ball holding window for holding a ball is formed in the cage.

0003

[Problem that the idea aims to solve]

This item consists of a snap ring on the inner circumference of the open end of the outer race and a torque transmission ball. Because there is less catching on the inner race, cage, and torque transmission when assembling the actual vehicle. When impact force is applied to the snap ring through the ball, the snap ring undergoes plastic deformation. However, there was a problem in that the torque transmission ball could come off the groove of the outer race.

0004

[Means to solve the problem]

This invention was made to solve the above-mentioned problems, and the outer lace is opened. As a snap ring that is fitted into an annular groove formed on the inner periphery of the mouth end, We used one with multiple protrusions bent to the side.

[0005]

[Effect]

With the above configuration, this invention allows the impact force of the inner race to be transferred to the cage and the torque transmission ball. acts on the snap ring through the Because the snap ring is caught on the torque transmission ball, the torque transmission ball is prevented from coming off the groove of the outer race.

[0006]

【Example】

Embodiments of the present invention will be described below based on the drawings. In Fig. 1, 11 is the driven A cylindrical outer race with an open end is provided at one end of the driven shaft 11. 11 are integrally formed. The inner peripheral surface of this outer race 12 has a A plurality of slide surfaces 13 and grooves 14 are formed alternately in the circumferential direction, and a plurality of slide surfaces 13 and grooves 14 are formed alternately in the outer race 11. An annular groove 24 is formed on the inner periphery of the opening end, and a substantially ring-shaped snap is formed in this annular groove 24. A ring 25 is inserted.

[0007] Reference numeral 15 indicates a drive shaft, and an inner race 16 is spliced at one end of this drive shaft 15. are mated. The outer circumferential surface of the inner race 16 is formed to have an arcuate cross section, and A plurality of grooves 18 corresponding to each groove 14 of the outer lace 12 are formed in the axial direction. ing. 19 is a cage inserted between the inner race 16 and the outer race 12; The outer circumferential surface 20 of the cage 19 is formed to have an arcuate cross section, and the outer circumferential surface 20 of the cage 19 has an arcuate cross section. It is slidably and rotatably fitted into the surface 13. Moreover, the inner peripheral surface 21 of the cage 19 is It is formed to have an arcuate cross section that fits on the outer circumferential surface 17 of the inner race 16, and The fit is a gap fit.

[0008] As shown in FIGS. 2 and 3, the snap ring 25 is folded outward in the radial direction. A plurality of curved concave projections 26 and a convex shape bent radially inward between the projections 26. A plurality of protrusions 27 are formed. The protrusion 26 fits into the annular groove 24 of the outer race 12. The torque transmission ball 2 is fitted and inserted, and the protrusion 27 protrudes radially inward. The snap ring 25 becomes more caught on the torque transmitting ball 2. 2 can be prevented from coming off from the groove 14 of the outer race 12.

[0009] Therefore, when the constant velocity joint is bent and assembled into the actual vehicle, the inner race 16, Impact force acts on the snap ring 25 via the cage 19 and the torque transmission ball 22 Even in the case where the torque transmission ball is This prevents the outer race 12 of No. 22 from coming off from the groove 14.

0010

[Effect of the idea]

As mentioned above, the present invention has an annular groove formed on the inner periphery of the open end of the outer race. The snap ring has multiple protrusions bent radially inward to be fitted into the Because we used the same model, the axial impact force applied to the inner race during assembly on the actual vehicle was reduced. This prevents the torque transmission ball from coming off the groove of the outer race.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a constant velocity joint showing an embodiment of the present invention.

FIG. 2 is an external view of a snap ring used in the present invention.

FIG. 3 is a partial cross-sectional view taken along line A-A in FIG. 1;

[Explanation of symbols]

12 Outer lace 13 Slide surface 14,18 groove 16 Inner lace 19 Cage 22 Torque transmission ball 23 Ball holding window 24 Annular groove 25 Snap ring 26, 27 protrusion

Claims (1)

[Scope of utility model registration request] Claim 1: Slide surfaces and grooves extending in the axial direction are formed alternately in the circumferential direction on the inner circumferential surface of a cylindrical outer race having an open end, and an annular groove is formed on the inner circumference of the open end of the outer race. A snap ring is fitted into the annular groove, a cage with an arc formed on the outer circumferential surface is slidably fitted onto the sliding surface, an inner race is fitted onto the inner circumferential surface of the cage, and a shaft is fitted onto the outer circumferential surface of the inner race. In the constant velocity joint, a plurality of grooves extending in the same direction are formed in the circumferential direction, and a ball holding window for holding a rollable torque transmission ball is formed in the groove of the outer race and the groove of the inner race in the cage. A constant velocity joint having a plurality of protrusions bent radially inward, the protrusions being engaged with the torque transmission ball.