High-performance rod telescopic constant-speed driving shaft assembly

Abstract

The utility model discloses a high-performance rod telescopic type constant-speed driving shaft assembly. The problem that an existing constant-speed driving shaft assembly is troublesome to assemble due to the fact that outer sliding is adopted is mainly solved. The bell housing is characterized in that the bell housing comprises a connecting pipe (22) and further comprises a connecting shaft (4) used for being connected with a hub bearing, and one end of the connecting shaft extends into an inner cavity of the connecting pipe to be in transmission with the connecting pipe through a key; the elastic piece (5) is arranged in the connecting pipe, one end of the elastic piece is in contact with the inner wall of the connecting pipe, and the other end of the elastic piece is in contact with the connecting shaft; the circumferential outer wall of the connecting pipe is of a smooth structure. According to the high-performance rod portion telescopic type constant-speed driving shaft assembly, the connecting shaft is internally arranged in a sliding mode and is in key transmission, the outer wall of the connecting pipe is smooth and can be matched with a hub bearing to install a sealing lip, and assembling is easy.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts, concretely relates to a high-performance rod telescopic constant velocity drive shaft assembly. BACKGROUND

[0002] With the continuous development of automobile industry, people's requirements for automobile performance are higher and higher. In order to make the output shaft and the input shaft in the same plane rotate at the same speed, a constant velocity universal joint drive shaft assembly is often used in automobile transmission system. The constant velocity universal joint drive shaft assembly is a power transmission device between the automobile engine and the driving wheel, which is used to provide the required traction and vehicle speed of the automobile under various working conditions, and to coordinate the changes of the two and have enough change range to ensure that the left and right drive wheels of the automobile can adapt to the differential requirements. Therefore, the performance and quality of the constant velocity universal joint drive shaft assembly directly affect the overall performance and driving safety of the automobile. In the prior art, the structure of the constant velocity universal joint drive shaft assembly is generally as follows: one end is a fixed ball cage universal joint, the other end is a movable joint telescopic ball cage universal joint, and the middle is a middle shaft connecting the fixed joint and the movable joint. Among them, the fixed joint is mainly composed of a bell-shaped shell, a retainer, a steel ball, a star-shaped sleeve and other accessories, the movable joint is composed of a shell, a retainer, a steel ball, a star-shaped sleeve and other accessories, and the fixed joint and the movable joint are connected with the middle shaft through spline and fixed by elastic retainer.

[0003] The Chinese patent with publication number CN222067407U discloses an anti-impact handle sliding constant velocity drive shaft assembly, which adopts an outer sliding structure and must use a dust cover to seal the rod part, which is relatively troublesome to assemble. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the shortcomings of the background art, the utility model provides a high-performance rod telescopic constant velocity drive shaft assembly, which mainly solves the problem of troublesome assembly of the current constant velocity drive shaft assembly.

[0005] The technical scheme of the utility model is,

[0006] A high-performance rod telescopic constant velocity drive shaft assembly, comprising a middle shaft, one end of the middle shaft is provided with a first universal joint, the other end is provided with a second universal joint, the first universal joint comprises a bell-shaped shell, the bell-shaped shell comprises a connecting pipe, and the utility model further comprises

[0007] A connecting shaft is used to connect with the hub bearing, and one end of the connecting shaft extends into the inner cavity of the connecting pipe and is connected with the connecting pipe through key transmission;

[0008] An elastic member is arranged in the connecting pipe, one end of the elastic member is in contact with the inner wall of the connecting pipe, and the other end is in contact with the connecting shaft;

[0009] The circumferential outer wall of the connecting pipe is smooth.

[0010] The connecting shaft comprises a first key part for key transmission with the connecting pipe and a second key part for key transmission with the wheel hub bearing.

[0011] The connecting pipe is provided with a check ring, which is arranged opposite to the first key part to prevent the connecting shaft from being pulled out.

[0012] The elastic member is a spring.

[0013] The connecting shaft is axially provided with a boss, and the spring at one end is sleeved outside the boss.

[0014] The bell-shaped shell is provided with a partition plate, one side of the partition plate is provided with the connecting pipe, the other side of the partition plate is provided with a containing cavity, and part of the intermediate shaft extends into the containing cavity.

[0015] The connecting shaft is provided with a positioning flange, which is arranged between the first key part and the second key part.

[0016] The utility model discloses a high -performance rod telescopic constant velocity drive shaft assembly adopts the built -in slip of connecting axle and passes through the key transmission, and the outer wall of connecting pipe is smooth and can cooperate wheel hub bearing installation sealing lip, and the assembly is relatively simple. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the sectional view schematic drawing of the first embodiment of the utility model.

[0018] Figure 2 It is the local explosion schematic drawing of the first embodiment of the utility model.

[0019] Figure 3 It is the schematic drawing of the utility model and wheel hub bearing installation together. DETAILED DESCRIPTION

[0020] The utility model discloses a high -performance rod telescopic constant velocity drive shaft assembly, including intermediate shaft 1, the intermediate shaft one end is equipped with first universal joint 2, the other end is equipped with second universal joint 3, the first universal joint includes bell-shaped shell 21, the bell-shaped shell includes connecting pipe 22, still includes connecting axle 4 for with wheel hub bearing connects, and one end of connecting axle is inlaid into the connecting pipe inner chamber and is connected with the connecting pipe through the key transmission, elastic member 5 is arranged in the connecting pipe, and one end contacts with the inner wall of connecting pipe, and the other end contacts with the connecting axle, the circumferential outer wall of connecting pipe is smooth structure. Adopt the built -in slip of connecting axle and pass through the key transmission, and the outer wall of connecting pipe is smooth and can cooperate wheel hub bearing installation sealing lip, and the assembly is relatively simple.

[0021] In the embodiment, the connecting shaft comprises a first key portion 41 for key transmission with the connecting pipe and a second key portion 42 for key transmission with the hub bearing.

[0022] In the embodiment, the connecting pipe is provided with a check ring 221 opposite to the first key portion, which prevents the connecting shaft from being pulled out.

[0023] In the embodiment, the elastic member is a spring, which is low in cost.

[0024] In the embodiment, the connecting shaft is provided with a boss 43 in the axial direction, and the spring is sleeved on the outer side of the boss at one end, which is stable in installation.

[0025] In the embodiment, the bell-shaped shell is provided with a partition plate 212, one side of the partition plate is provided with the connecting pipe, and the other side of the partition plate is provided with a cavity, and part of the intermediate shaft extends into the cavity.

[0026] In the embodiment, the connecting shaft is provided with a positioning flange 44 between the first key portion and the second key portion.

[0027] In the description of the utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0029] The embodiments described with reference to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation on the utility model. The embodiments should not be regarded as a limitation on the utility model, but any improvement made on the basis of the spirit of the utility model should be within the protection scope of the utility model.

Claims

1. A high-performance telescopic constant velocity drive shaft assembly, comprising an intermediate shaft (1), wherein a first universal joint (2) is provided at one end of the intermediate shaft and a second universal joint (3) is provided at the other end, the first universal joint comprising a bell-shaped housing (21), characterized in that: The bell-shaped shell includes a connecting tube (22) and also includes... A connecting shaft (4) is used to connect with a wheel hub bearing, and one end of the connecting shaft extends into the inner cavity of the connecting pipe and is driven by the connecting pipe via a key; An elastic element (5) is disposed inside the connecting pipe, with one end in contact with the inner wall of the connecting pipe and the other end in contact with the connecting shaft; The outer circumferential wall of the connecting pipe has a smooth structure.

2. A high-performance telescopic constant velocity drive shaft assembly according to claim 1, characterized in that: The connecting shaft includes a first key portion (41) for key transmission with the connecting tube and a second key portion (42) for key transmission with the hub bearing.

3. A high-performance telescopic constant velocity drive shaft assembly according to claim 2, characterized in that: The connecting pipe is provided with a retaining ring (221), which is disposed opposite to the first key portion to prevent the connecting shaft from coming out.

4. A high-performance telescopic constant velocity drive shaft assembly according to claim 3, characterized in that: The elastic element is a spring.

5. A high-performance telescopic constant velocity drive shaft assembly according to claim 4, characterized in that: The connecting shaft is provided with a boss (43) in the axial direction, and the spring at one end is sleeved on the outside of the boss.

6. A high-performance telescopic constant velocity drive shaft assembly according to claim 5, characterized in that: The bell-shaped shell is provided with a partition (212), the connecting pipe is provided on one side of the partition, and a cavity is provided on the other side of the partition, with part of the intermediate shaft extending into the cavity.

7. A high-performance telescopic constant velocity drive shaft assembly according to claim 6, characterized in that: The connecting shaft is provided with a positioning flange (44), which is located between the first key and the second key.

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