High-stability universal joint

Abstract

The utility model provides a high-stability universal joint, and belongs to the technical field of universal joints. The problems that in the existing using process, a bearing is often dirty and disordered and cannot be used, and grease in the bearing leaks out to affect use are solved. The high-stability universal joint comprises a cross shaft body, four shaft ends are arranged on the cross shaft body, outer rings are arranged at the four shaft ends of the cross shaft body, fixing parts used for dust prevention are arranged at the four shaft ends, a plurality of rolling assemblies are arranged on the fixing parts, each rolling assembly is composed of a fixing shaft and a roller, and the fixing shafts and the rollers are arranged on the cross shaft body. The rollers are all arranged on the fixing shaft and can roll on the fixing shaft, a connecting ring is arranged on the fixing part, an open groove is formed in the outer ring, the connecting ring partially extends into the open groove and is used for preventing dust of a rolling assembly on the fixing part, and balls are arranged between the fixing part and the outer wall of the shaft end. And rolling grooves for rolling of the balls are formed in the fixing part and the shaft end. The utility model has the advantages of high stability and dust prevention.

Description

Technical Field

[0001] The utility model belongs to the technical field of universal joints, and relates to a universal joint, in particular to a highly stable universal joint. Background Technique

[0002] A universal joint, namely a universal joint head, is a mechanical part that realizes power transmission at a variable angle and is used in positions where the direction of the transmission axis needs to be changed. It is the "joint" part of the universal transmission device of the vehicle drive system. The combination of a universal joint and a transmission shaft is called a universal joint transmission device.

[0003] A universal joint is composed of a cross shaft and bearings. The bearings are sleeved on the cross shaft to achieve the effect of universal rotation. The bearings are generally needle bearings. Generally, the bearings are used after being limited by a retaining ring. However, during the use process, problems such as the internal disorder of the bearings being unusable and the leakage of grease inside the bearings affecting the use often occur, thus affecting the stability and service life of the universal joint during use. Summary of the Invention

[0004] The purpose of the utility model is to provide a highly stable and dust-proof universal joint for the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved by the following technical solutions: A highly stable universal joint includes a cross shaft body. Four shaft ends are arranged on the cross shaft body. It is characterized in that outer rings are arranged on the four shaft ends of the cross shaft body. Fixing parts for dust prevention are arranged on the four shaft ends. A plurality of rolling components are arranged on the fixing parts. The rolling components are composed of fixed shafts and rollers. The rollers are all arranged on the fixed shafts and can roll on the fixed shafts. One end of the roller is in contact with the outer wall of the shaft end, and the other end of the roller is in contact with the inner wall of the outer ring. A connecting ring is arranged on the fixing part. A slot is opened on the outer ring, and a part of the connecting ring extends into the slot and is used for dust prevention of the rolling components on the fixing part. A ball is arranged between the fixing part and the outer wall of the shaft end. Rolling grooves for the balls to roll are opened on both the fixing part and the shaft end.

[0006] In the above-mentioned highly stable universal joint, four rolling components are arranged on each shaft end and are respectively arranged on the four sides of the fixing part.

[0007] In the above-mentioned highly stable universal joint, the fixed shaft and the fixing part are integrally formed, and the connecting ring and the fixing part are integrally formed.

[0008] Compared with the prior art, the installation of the highly stable universal joint of the utility model is stable, the needle roller limit is stable, making the cross shaft body more stable during use, and the fixing parts arranged on the shaft ends and the connecting rings on the fixing parts play a role in dust prevention for the inside of the needle rollers. Brief Description of the Drawings

[0009] Figure 1 is a partially sectional structural schematic diagram of the present utility model.

[0010] Figure 2 is a structural schematic diagram of the present utility model (without an outer ring).

[0011] In the figure, 1 is the cross shaft body; 2 is the shaft end; 3 is the outer ring; 4 is the fixing part; 5 is the rolling assembly; 6 is the fixed shaft; 7 is the roller; 8 is the connecting ring; 9 is the ball. Detailed Description of the Preferred Embodiments

[0012] The following are specific embodiments of the present utility model in conjunction with the accompanying drawings to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

[0013] As shown in Figure 1 , Figure 2 the high-stability universal joint of the present invention includes a cross shaft body 1, four shaft ends 2 are provided on the cross shaft body 1, outer rings 3 are provided on the four shaft ends 2 of the cross shaft body 1, fixing parts 4 for dust prevention are provided on the four shaft ends 2, a plurality of rolling assemblies 5 are provided on the fixing parts 4, the rolling assemblies 5 are composed of fixed shafts 6 and rollers 7, the rollers 7 are all arranged on the fixed shafts 6 and can roll on the fixed shafts 6, one end of the roller 7 is in contact with the outer wall of the shaft end 2, and the other end of the roller 7 is in contact with the inner wall of the outer ring 3. By placing the roller 7 on the fixed shaft 6, it can roll in a fixed direction on the shaft, making the cross shaft body 1 more stable during operation. A connecting ring 8 is provided on the fixing part 4, a slot is opened on the outer ring 3, and a part of the connecting ring 8 extends into the slot and is used for dust prevention of the rolling assembly 5 on the fixing part 4. The annular structure of the connecting ring 8 and its extension into the outer ring 3 prevent external dust from entering the outer ring 3 and the shaft end 2, affecting the rolling assembly 5 and reducing its service life. A ball 9 is provided between the outer wall of the fixing part 4 and the shaft end 2, and rolling grooves for the ball 9 to roll are opened on both the fixing part 4 and the shaft end 2.

[0014] In further detail, four rolling assemblies 5 are provided on each shaft end 2 and are respectively arranged on the four sides of the fixing part 4.

[0015] In further detail, the fixed shaft 6 and the fixing part 4 are integrally formed, and the connecting ring 8 and the fixing part 4 are integrally formed.

[0016] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0017] Although terms such as the cross shaft body 1, shaft end 2, outer ring 3, fixing part 4, rolling assembly 5, fixed shaft 6, roller 7, connecting ring 8, ball 9, etc. in the drawings are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for more conveniently describing and explaining the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A high-stability universal joint, comprising a cross-axis body (1), wherein the cross-axis body (1) is provided with four shaft ends (2), characterized in that: The four shaft ends (2) of the cross shaft body (1) are each provided with an outer ring (3), the four shaft ends (2) are each provided with a dustproof fixing portion (4), the fixing portion (4) is provided with a plurality of rolling assemblies (5), the rolling assemblies (5) are composed of a fixed shaft (6) and a roller (7), the rollers (7) are each provided on the fixed shaft (6) and can roll on the fixed shaft (6), one end of the roller (7) is connected to the outer wall of the shaft end (2), The other end of the roller (7) is connected to the inner wall of the outer ring (3); a connecting ring (8) is provided on the fixed part (4); a groove is provided on the outer ring (3); a portion of the connecting ring (8) extends into the groove and is used to prevent dust from the rolling component (5) on the fixed part (4); a ball (9) is provided between the fixed part (4) and the outer wall of the shaft end (2); and rolling grooves for the ball (9) to roll are provided on both the fixed part (4) and the shaft end (2).

2. A high stability universal joint according to claim 1, characterized in that: There are four rolling assemblies (5) on each of the shaft ends (2), and they are respectively arranged on four sides of the fixing portion (4).

3. The high stability universal joint according to claim 1, characterized in that: The fixed shaft (6) and the fixed portion (4) are integrally formed, and the connecting ring (8) and the fixed portion (4) are integrally formed.

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