JPH0519663U - Tripod type constant velocity joint retaining device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the stopper ring from rising from the joint outer ring and to prevent the roller from slipping out. [Structure] Flange 1 provided on the outer periphery of stopper ring 7
0 is engaged with the circumferential groove 12 on the outer diameter surface of the outer ring 1, and the notch 9
The engaging piece 16 provided on the inner peripheral edge of the is engaged with the circumferential groove 15 on the inner diameter surface of the outer ring 1. Further, the notch 9 is provided with a retaining claw that comes into contact with the spherical roller in the tripod groove. In this structure, the outer ring 1 is restrained on both the outer peripheral side and the inner peripheral side of the stopper ring 7, and therefore the ring is prevented from rising.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tripod type constant velocity joint retaining device.

[0002]

[Prior Art]

 In the tripod type constant velocity joint, three track grooves are formed on the inner diameter surface of the outer ring at equal intervals in the inner circumferential direction, and the tripod member incorporated inside the outer ring is provided with three leg shafts. The rollers are rotatably mounted on the outside of the leg shaft so that they can be moved along each track groove.However, in this type of joint, it is necessary to prevent the rollers from slipping out of the track groove before assembly. To prevent this, a retaining device is provided on the opening-side end surface of the outer ring to prevent the roller from coming out.

As such a retaining device, the devices shown in FIGS. 5 and 6 have been conventionally proposed. In this retaining device, a stopper ring 23 formed in the same outer diameter shape as the end surface 22 is brought into contact with the opening-side end surface 22 of the outer ring 21, and the tip of a flange 24 provided on the outer periphery of the stopper ring 23 is attached to the outer ring. The stopper ring 23 is prevented from coming off by engaging with a peripheral groove 25 formed on the outer diameter surface of the stopper 21.

Further, a notch 27 corresponding to the shape of the opening 26 of the outer ring 21 is provided inside the stopper ring 23, and a roller (shown in the figure) inserted in a track groove 28 of the outer ring 21 is provided around the notch 21. The retaining claws 29 are provided so as to abut against (not shown).

[0005]

[Problems to be solved by the device]

 In the retaining device having the above structure, when the roller in the track groove tries to move outward from the opening of the outer ring 21, the retaining claw 29 comes into contact with the roller to prevent the roller from coming off. Since only 23 of the outer periphery of 23 are locked to the outer ring 21, when the roller is pressed strongly against the stopper ring 23, the peripheral edges of the retaining claw 29 and the cutout portion 27 are lifted from the end face of the outer ring. is there.

In particular, when the tripod member makes an operating angle and is greatly inclined while the roller is in contact with the stopper ring 23, the stopper ring 23 may be largely deformed and the roller may come off.

Therefore, it is a technical object of the present invention to provide a retaining device in which the tensile strength in the axial direction at the mounting portion of the stopper ring is improved and the roller withdrawal strength is increased.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a plurality of engagements in which a circumferential groove is formed on the inner diameter surface of the opening of the joint outer ring, and the tip is engaged with the circumferential groove on the peripheral edge of the notch of the stopper ring. The structure is provided with one piece.

[0009]

[Action]

 In the above structure, the engaging piece restrains the inner peripheral side of the stopper ring, and the flange stops the deformation of the outer peripheral side of the stopper ring, so that the stopper ring is prevented from rising from the outer ring.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the attached FIGS. As shown in FIG. 1, the inner ring surface of the outer ring 1 is formed with three track grooves 2 at equal intervals in the circumferential direction, and the tripod member 3 is incorporated inside the outer ring 1.

The tripod member 3 is provided with three leg shafts 4, and a spherical roller 5 that slides along the track groove 2 is rotatably attached to the tip of each leg shaft 4. Has been.

A stopper ring 7 is attached to the opening-side end surface 6 of the outer ring 1. As shown in FIGS. 2 to 4, the outer circumference of the stopper ring 7 is formed so as to match the outer circumference of the outer ring end surface 6, and a notch corresponding to the shape of the opening 8 of the outer ring 1 is formed inside the outer ring 1. 9 is formed.

A plurality of flanges 10 are provided on the outer circumference of the stopper ring 7, and a bent portion 11 formed at the tip of the flange 10 engages with a circumferential groove 12 provided on the outer diameter surface of the outer ring 1. It is possible.

A plurality of retaining claws 13 projecting inward are formed on the peripheral edge of the notch 9 corresponding to each track groove 2, and the retaining claws 13 are inserted into the track groove 2 on the spherical surface. It comes into contact with the roller 5 to prevent the roller from coming off.

On the other hand, the inner diameter surface of the outer ring 1 in the vicinity of the opening 8 is formed by a tapered surface 14 whose diameter decreases toward the inner side, and each tapered surface 14 has a circumferential groove 15 parallel to the opening side end surface 6. Is formed.

Further, a plurality of engaging pieces 16 axially protruding along the inner diameter surface of the outer ring 1 are provided on the peripheral edge of the notch 9 of the stopper ring 7 corresponding to the tapered surface 14, and the engagement thereof is performed. A bent portion 17 that engages with the circumferential groove 15 of the outer ring 1 is formed at the tip of the piece 16.

In FIG. 1, 18 is a shaft to which the tripod member 3 is connected, 19 is a boot, and 20 is a boot band.

The retaining device of the embodiment has the above-described structure. To attach the stopper ring 7 to the outer ring 1, set the stopper ring 7 so that the notch 9 and the opening 8 of the outer ring face each other. In that state, the bent portion 11 at the tip of the flange 10 engages with the circumferential groove 12 of the outer ring outer diameter, and the bent portion 17 at the tip of the engaging piece 16 engages with the circumferential groove 15 of the outer ring inner diameter. , Push the stopper ring 7 in the axial direction.

As a result, the stopper ring 7 is prevented from coming off in the axial direction by the engagement between the flange 10 and the peripheral groove 12 on the outer peripheral side and by the engagement between the engaging piece 16 and the peripheral groove 15 on the inner peripheral side, so that a large tensile force is exerted. It is constrained to the end surface 6 of the outer ring 1 with strength.

Therefore, even if the spherical roller 5 is strongly pressed against the stopper ring 7 from the inside, the stopper ring 7 is less likely to float above the end surface 6 of the outer ring 1, and the strength with which the spherical roller 5 is pulled out increases.

[0021]

[Effect of the device]

 As described above, according to the present invention, since both the inner and outer peripheral sides of the stopper ring are prevented from coming off from the end surface of the outer ring, it is possible to prevent the stopper ring from rising from the end surface of the outer ring and to prevent the roller from coming out. Has the effect of raising.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an embodiment.

FIG. 2 is a perspective view showing an outer ring and a stopper ring of the same.

FIG. 3 is a front view showing the stopper ring of the same.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view showing an outer ring and a stopper ring of a conventional example.

FIG. 6 is a front view showing a conventional stopper ring.

[Explanation of symbols]

 1 Outer ring 2 Track groove 3 Tripod member 5 Spherical roller 7 Stopper ring 8 Opening 9 Notch 10 Flange 12 Circumferential groove 13 Retaining claw 15 Circumferential groove 16 Engaging piece

Claims (1)

[Scope of utility model registration request] 1. A stopper ring is brought into contact with the end face of the joint outer ring on the opening side, which has three track grooves at equal intervals on the inner diameter face, and the tip of a flange provided on the outer periphery of the stopper ring is attached to the outer ring of the outer ring. The notch corresponding to the shape of the opening of the outer ring is formed inside the stopper ring by engaging with the circumferential groove provided in the surface, and the roller of the tripod member inserted in the track groove is formed at the peripheral edge of the notch. In a retainer device for a tripod type constant velocity joint provided with a retaining claw that comes into contact with, a peripheral groove is formed on the inner diameter surface of the opening of the outer ring, and the tip of the peripheral groove is formed around the notch of the stopper ring. A retaining device for a tripod type constant velocity joint, characterized in that a plurality of engaging pieces for engaging with are provided.