Three-ball-pin type constant velocity universal joint with rolling balls on end faces of ball rings

Abstract

The utility model discloses a tripod type constant velocity universal joint with rolling balls on ball ring end surfaces. The tripod constant velocity universal joint mainly solves the problem that an existing tripod constant velocity universal joint is large in friction force. The ball bearing is characterized in that the axial outer wall of the ball ring is provided with a plurality of rolling balls (24) which are rotatably arranged, and the rolling balls are in rolling fit with the inner wall of the shell. According to the tripod constant velocity universal joint with the balls attached to the end faces of the ball rings, axial sliding of the ball rings is changed into rolling of the steel balls, original sliding friction is changed into rolling friction, friction force in the derived axial direction is reduced, and therefore the effect of reducing axial derived force is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts, concretely relates to a three-ball pin type constant velocity universal joint with ball ring end face attached with rolling balls. BACKGROUND

[0002] For the three-ball pin type constant velocity universal joint, the axial derived force is the superposition of the friction force generated by the periodic reciprocating motion of the three ball rings along their respective raceways. Therefore, the axial derived force generated during the operation of the universal joint will exert vibration excitation on the mechanical system, causing automobile vibration and noise problems. The axial derived force of the universal joint will exert a transverse alternating load on the automobile, causing transverse vibration of the automobile. Therefore, the axial derived force of the universal joint has an adverse effect on the NVH performance of the automobile. Moreover, since the human body is sensitive to horizontal low-frequency vibration, the influence of the universal joint on the NVH performance of the automobile is particularly evident when the vehicle speed is low. When the vehicle suddenly accelerates, the torque applied to the universal joint will increase sharply, and the friction force between the raceway and the ball ring will also increase sharply, resulting in a sharp increase in the axial derived force of the universal joint, which intensifies the transverse shaking of the automobile and deteriorates the ride comfort of the automobile. Therefore, during the design process of the three-ball pin type constant velocity universal joint, the axial derived force should be reduced as much as possible. SUMMARY

[0003] In order to overcome the shortcomings of the background art, the utility model provides a three-ball pin type constant velocity universal joint with ball ring end face attached with rolling balls, which mainly solves the problem of large friction force of the current three-ball pin type constant velocity universal joint.

[0004] The technical scheme of the utility model is,

[0005] A three-ball pin type constant velocity universal joint with ball ring end face attached with rolling balls, comprising a housing, a three-pin holder assembly is arranged in the housing, the three-pin holder comprises a holder body, a journal is arranged on the holder body, a ball ring is arranged around the journal, and a groove is arranged in the housing and matched with the ball ring;

[0006] An axially outer wall of the ball ring is provided with a plurality of rolling balls arranged rotatably, and the rolling balls are in rolling cooperation with the inner wall of the housing.

[0007] The rolling balls are steel balls.

[0008] An axially end surface of the ball ring is provided with a sink, and the rolling balls are arranged in the sink.

[0009] Further comprising a retainer, the retainer is provided with a pocket hole for mounting the rolling balls.

[0010] Further comprising a gland detachably connected with the ball ring, the gland is used for limiting the retainer in the axial direction.

[0011] Also included is a fastener for mounting the gland on the ball ring.

[0012] Several of the balls are distributed in a ring shape on the ring-shaped end face of the ball ring.

[0013] The ball ring is axially provided with a through mounting hole, and the ball ring is provided with extension plates, part of the extension plates extending into the mounting hole, and the sink groove is arranged on the extension plate.

[0014] The beneficial effects of the present application are: the three-ball pin type constant velocity joint with ball ring end face attached with balls provided by the present application changes the axial sliding of the ball ring into the rolling of the steel balls, changes the original sliding friction into rolling friction, reduces the friction force in the axial direction, and thus achieves the effect of reducing the axial derived force. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the first embodiment of the present application.

[0016] Figure 2 It is a cross-sectional view of the first embodiment of the present application.

[0017] Figure 3 It is Figure 2 It is an enlarged schematic view of A in the middle.

[0018] Figure 4 It is an exploded schematic view of the first embodiment of the present application.

[0019] Figure 5 It is a cross-sectional view of the ball ring of the first embodiment of the present application. DETAILED DESCRIPTION

[0020] The present application will be further described below with reference to the drawings. A three-ball pin type constant velocity joint with ball ring end face attached with balls comprises a shell 1, a three-pin frame assembly 2 is arranged in the shell, the three-pin frame comprises a frame body 21, a shaft neck 22 is arranged on the frame body, a ball ring 23 is arranged on the shaft neck in a circumferential direction, and a channel 11 matched with the ball ring is arranged in the shell; an axially outer wall of the ball ring is provided with a plurality of rotatable balls 24, and the balls are in rolling cooperation with the inner wall of the shell. The axial sliding of the ball ring is changed into the rolling of the steel balls, the original sliding friction is changed into rolling friction, the friction force in the axial direction is reduced, and thus the effect of reducing the axial derived force is achieved.

[0021] In the present embodiment, as shown in the drawings, the balls are steel balls.

[0022] In the present embodiment, as shown in the drawings, the axial end face of the ball ring is provided with a sink groove 231, and the balls are arranged in the sink groove. The sink groove can be a ring-shaped groove.

[0023] In the embodiment, as shown in the figure, a cage 6 is further included, and the cage is provided with pockets 61 for mounting the steel balls.

[0024] In the embodiment, as shown in the figure, a gland 3 is further included, and the gland is detachably connected with the ring, and the gland is used for limiting the cage in the axial direction.

[0025] In the embodiment, as shown in the figure, a fastener 4 is further included, and the fastener is used for mounting the gland on the ring.

[0026] In the embodiment, as shown in the figure, the steel balls are distributed in the annular end surface of the ring.

[0027] In the embodiment, as shown in the figure, the ring is provided with penetrating mounting holes 232 in the axial direction, and the ring is provided with extension plates 233, and part of the extension plates extend into the mounting holes, and the sink is arranged on the extension plates.

[0028] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0029] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0030] The embodiments described with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. The embodiments should not be regarded as a limitation of the present application, but any improvement made on the basis of the spirit of the present application should be within the scope of protection of the present application.

Claims

1. A three-ball pin type constant velocity joint with ball ring end face attached with rolling balls, comprising a shell (1), a three-pin holder assembly (2) is arranged in the shell, the three-pin holder comprises a holder body (21), a shaft neck (22) is arranged on the holder body, a ball ring (23) is arranged on the shaft neck in the circumferential direction, a groove (11) matched with the ball ring is arranged in the shell; characterized in that: a plurality of rolling balls (24) are arranged on the axial outer wall of the ball ring in a rotatable manner, and the rolling balls are in rolling fit with the inner wall of the shell. The rolling balls are steel balls.

2. A tri-lobed ball and socket constant velocity joint of the type having a ball ring with an end face with a ball attached thereto as set forth in claim 1, characterized in that: An axial end face of the ball ring is provided with a sink (231), and the rolling balls are arranged in the sink.

3. A tri-lobed ball and socket constant velocity joint of the type having a ball ring with an end face with a ball attached thereto as defined in claim 2, characterized in that: Further comprising a retainer (6), the retainer is provided with a pocket hole (61) for mounting the rolling balls.

4. A tri-lobed ball and socket constant velocity joint of the type having a ball ring with an end face with a ball attached thereto as set forth in claim 3, characterized in that: Further comprising a gland (3) detachably connected with the ball ring, the gland is used for limiting the retainer in the axial direction.

5. A tri-lobed ball and socket constant velocity joint of the type having a ball ring end face with integral ball as set forth in claim 4 wherein: Further comprising a fastener (4) for mounting the gland on the ball ring.

6. A tri-lobed ball and socket constant velocity joint of the type having a ball ring end face with integral ball as set forth in claim 5 wherein: A plurality of the rolling balls are distributed in a ring shape on the ring-shaped end face of the ball ring.

7. A tri-lobed ball and socket constant velocity joint of the type having a ball ring end face with integral ball as set forth in claim 6 wherein: The ball ring is provided with a through mounting hole (232) in the axial direction, the ball ring is provided with an extension plate (233), part of the extension plate extends into the mounting hole, and the sink is arranged on the extension plate.

8. A tri-lobed ball and socket constant velocity joint of the type having a ball ring with an end face and a ball attached to the end face, as set forth in claim 7, wherein: ​

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