Novel universal joint

Abstract

The utility model provides a novel universal joint, and belongs to the field of universal joints. The universal joint solves the problem that in the using process of an existing universal joint, due to the fact that balls roll on rolling grooves of the universal joint, the universal joint can be abraded after being used for a long time. The novel universal joint comprises a universal joint body, a shaft rod is arranged on the universal joint body, dust covers are arranged on the universal joint body and the shaft rod, the shaft rod is arranged in the universal joint body through a starlike sleeve, a plurality of balls are arranged between the inner wall of the universal joint body and the outer wall of the starlike sleeve, and a connecting sleeve shell is arranged on the universal joint body. Rolling grooves for the corresponding balls to roll are formed in the connecting sleeve shell, a fixing ring is arranged at the upper end of the connecting sleeve shell, a connecting ring is arranged at the lower end of the dust cover, a plurality of fixing rods are arranged on the universal joint body, two positioning assemblies are arranged on each fixing rod, and each positioning assembly is composed of a positioning rod and a connecting spring. The utility model has the advantage of being convenient to replace.

Description

Technical Field

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

[0002] A universal joint, namely a universal joint, 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. In a vehicle with a front-mounted engine and rear-wheel drive, the universal joint transmission device is installed between the output shaft of the transmission and the input shaft of the main reducer of the drive axle; while in a vehicle with a front-mounted engine and front-wheel drive, the transmission shaft is omitted, and the universal joint is installed between the front axle half shaft that is responsible for both driving and steering and the wheel.

[0003] During the use of the existing universal joint, since the balls roll on the rolling grooves of the universal joint, after long-term use, the universal joint will be worn. When performing maintenance, the entire universal joint needs to be replaced, which greatly increases the working cost. Summary of the Invention

[0004] The purpose of the utility model is to provide a new type of universal joint that is convenient to replace 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 new type of universal joint includes a universal joint body. A shaft rod is arranged on the universal joint body. A dust cover is arranged on the universal joint body and the shaft rod. The shaft rod is arranged in the universal joint body through a spider. A plurality of balls for adjusting the rotation of the spider are arranged between the inner wall of the universal joint body and the outer wall of the spider, and the balls are positioned and adjusted through a cage. The characteristic is that a connecting sleeve shell that can be replaced and is connected to the balls is arranged on the universal joint body. A rolling groove for the corresponding balls to roll is opened on the connecting sleeve shell. A fixing ring is arranged at the upper end of the connecting sleeve shell. A connecting ring is arranged at the lower end of the dust cover. A plurality of fixing rods for fixing the fixing ring are arranged on the universal joint body. Two positioning components for positioning the dust cover and the connecting sleeve shell are arranged on the fixing rods. The positioning component consists of a positioning rod and a connecting spring. The dust cover and the connecting sleeve shell are both fixedly installed on the universal joint body through the positioning component.

[0006] In the above-mentioned new type of universal joint, an installation groove for installing the positioning component is opened on the fixing rod. One end of the positioning rod extends out of the installation groove, and the other end of the positioning rod extends into the installation groove and is connected to the connecting spring.

[0007] In the above-mentioned novel universal joint, through holes for several fixing rods to pass through are formed in both the connecting ring and the fixing ring.

[0008] In the above-mentioned novel universal joint, the dust cover is fixedly arranged on the shaft rod through a small clamp.

[0009] Compared with the prior art, in this novel universal joint, the connecting sleeve is detachably installed on the universal joint body through the positioning assembly. After long-term use, only the connecting sleeve needs to be replaced, which greatly reduces the working cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural view of the present utility model.

[0011] Figure 2 is a partially sectional structural view of the present utility model.

[0012] In the figure, 1, universal joint body; 2, shaft rod; 3, dust cover; 4, star-shaped sleeve; 5, ball; 6, connecting sleeve; 7, fixing ring; 8, connecting ring; 9, fixing rod; 10, positioning rod; 11, connecting spring; 12, mounting groove; 13, small clamp. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The following are specific embodiments of the present utility model in combination with the accompanying drawings, and the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0014] As Figure 1 , Figure 2 shown, this novel universal joint includes a universal joint body 1. A shaft rod 2 is arranged on the universal joint body 1. A dust cover 3 is arranged on the universal joint body 1 and the shaft rod 2. The shaft rod 2 is arranged in the universal joint body 1 through a star-shaped sleeve 4. A plurality of balls 5 for adjusting the rotation of the star-shaped sleeve 4 are arranged between the inner wall of the universal joint body 1 and the outer wall of the star-shaped sleeve 4, and the balls 5 are positioned and adjusted through a cage. A connecting sleeve 6 that can be replaced and is connected to the balls 5 is arranged on the universal joint body. A rolling groove for the corresponding balls 5 to roll is formed in the connecting sleeve 6. The balls 5 roll in the rolling groove of the connecting sleeve 6, and wear occurs on the connecting sleeve 6. During maintenance, only the connecting sleeve 6 needs to be replaced. A fixing ring 7 is arranged at the upper end of the connecting sleeve 6. A connecting ring 8 is arranged at the lower end of the dust cover 3. A plurality of fixing rods 9 for fixing the fixing ring 7 are arranged on the universal joint body 1. Two positioning assemblies for positioning the dust cover 3 and the connecting sleeve 6 are arranged on the fixing rods 9. The positioning assembly is composed of a positioning rod 10 and a connecting spring 11. The dust cover 3 and the connecting sleeve 6 are both fixedly installed on the universal joint body 1 through the positioning assembly.

[0015] Specifically, an installation groove 12 for installing the positioning assembly is formed on the fixing rod 9. One end of the positioning rod 10 extends out of the installation groove 12, and the other end of the positioning rod 10 extends into the installation groove 12 and is connected to the connecting spring 11.

[0016] Specifically, when it is necessary to remove the connecting sleeve 6 from the universal joint body 1, by pressing the positioning rod 10 in the positioning assembly, it moves into the installation groove 12 of the fixing rod 9, and the return spring is compressed, so that the connecting sleeve 6 can be removed from the fixing rod 9, thereby replacing the connecting sleeve 6 without replacing the entire universal joint body 1.

[0017] Specifically, through holes for several fixing rods 9 to pass through are formed on both the connecting ring 8 and the fixing ring 7.

[0018] Specifically, the dust cover 3 is fixedly arranged on the shaft rod 2 through a small clamp 13.

[0019] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0020] Although terms such as the universal joint body 1, shaft rod 2, dust cover 3, star-shaped sleeve 4, ball 5, connecting sleeve 6, fixing ring 7, connecting ring 8, fixing rod 9, positioning rod 10, connecting spring 11, installation groove 12, small clamp 13, etc. in the drawings are used more frequently in this article, the possibility of using other terms is not excluded. Using these terms is only for more conveniently describing and explaining the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A novel universal joint, comprising a universal joint body (1), a shaft (2) being arranged on the universal joint body (1), a dust cover (3) being arranged on the universal joint body (1) and the shaft (2), the shaft (2) being arranged in the universal joint body (1) through a star sleeve (4), a plurality of balls (5) for adjusting the rotation of the star sleeve (4) being arranged between the inner wall of the universal joint body (1) and the outer wall of the star sleeve (4), and the balls (5) being positioned and adjusted through a retaining frame, characterized in that: The universal joint body is provided with a replaceable connecting sleeve (6) connected to the ball (5); the connecting sleeve (6) is provided with a rolling groove for the corresponding ball (5) to roll; the upper end of the connecting sleeve (6) is provided with a fixing ring (7); the lower end of the dust cover (3) is provided with a connecting ring (8); the universal joint body (1) is provided with a plurality of fixing rods (9) for fixing the fixing ring (7); the fixing rods (9) are provided with two positioning components for positioning the dust cover (3) and the connecting sleeve (6); the positioning components are composed of a positioning rod (10) and a connecting spring (11); the dust cover (3) and the connecting sleeve (6) are fixedly mounted on the universal joint body (1) through the positioning components.

2. A new universal joint according to claim 1, characterized in that: The fixing rod (9) is provided with an installation groove (12) for installing the positioning component, one end of the positioning rod (10) extends out of the installation groove (12), and the other end of the positioning rod (10) extends into the installation groove (12) and is connected to the connecting spring (11).

3. A new universal joint according to claim 1, characterized in that: The connecting ring (8) and the fixing ring (7) are both provided with openings for a plurality of fixing rods (9) to pass through.

4. A new universal joint according to claim 1, characterized in that: The dust cover (3) is fixedly arranged on the shaft rod (2) via a small clamp (13).

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