Ball cage universal joint

Abstract

The utility model provides a ball cage universal joint, and belongs to the technical field of universal joints. The dustproof sleeve solves the problem that a shaft rod and a universal joint are not detachable and occupy a large volume, so that the dustproof sleeve is complicated to disassemble and assemble. The ball cage universal joint comprises a universal joint body, a driving shaft is arranged on the universal joint body, a dust cover assembly is arranged between the driving shaft and the universal joint body, the dust cover assembly comprises a dust cover body, an annular groove is formed in the universal joint body, a sliding part is arranged on the outer side of the universal joint body, and a plurality of balls are arranged between the sliding part and the annular groove. Rolling grooves for rolling of the balls are formed in the universal joint body, first clamping grooves matched with the balls are formed in the sliding part, second clamping grooves matched with the balls are formed in the dust cover body, a step part is arranged on the universal joint body, and a connecting spring is arranged between the sliding part and the step part. The dust cover has the advantage that the dust cover is convenient to disassemble.

Description

Technical Field

[0001] This utility model belongs to the field of universal joint technology, and specifically relates to a ball cage universal joint. Background Technology

[0002] Existing dust covers are made of rubber, which is easily damaged by impacts from sand and gravel, leading to oil leaks. Therefore, dust covers are considered consumable parts and require frequent replacement. To prevent the universal joint from coming loose, the shaft and universal joint are typically designed as non-removable structures, with both ends of the dust cover secured to the universal joint and shaft respectively by clamps. Because the shaft and universal joint are non-removable, they occupy a large volume, making disassembly and assembly of the dust cover complex and replacement / repair costs high. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a ball joint with a dust cover that is easy to disassemble.

[0004] The objective of this utility model can be achieved through the following technical solution: a ball joint, comprising a universal joint body, a drive shaft extending into the universal joint body, and a dust cover assembly between the drive shaft and the universal joint body. The dust cover assembly comprises a dust cover body, one end of which is disposed on the drive shaft and the other end on the universal joint body. The universal joint body has an annular groove into which one end of the dust cover body extends. A sliding portion is disposed on the outer side of the universal joint body, allowing it to slide up and down. A plurality of balls are disposed between the sliding portion and the annular groove. The universal joint body has a rolling groove for the balls to roll. The sliding portion has a first groove that engages with the balls. The dust cover body has a second groove that engages with the balls. The universal joint body has a stepped portion, and a connecting spring is disposed between the sliding portion and the stepped portion.

[0005] In the aforementioned ball cage universal joint, the dust cover body is divided into a cover body and two fixing parts. The cover body is made of soft rubber material. One of the fixing parts is located at the lower end of the dust cover body for extending into the annular groove for fixing. The other fixing part is set on the drive shaft by a clamp.

[0006] In the aforementioned ball joint, when the dust cover assembly is installed, one end of the ball is in contact with the inner wall of the sliding part, and the other end of the ball extends into the second slot to fix the dust cover body.

[0007] In the aforementioned ball cage universal joint, the universal joint body is provided with a stop portion for the upper end of the sliding part to abut against.

[0008] Compared with existing technologies, this ball joint facilitates the disassembly of the lower end of the dust cover assembly and the maintenance and replacement of internal parts of the joint body by the arrangement of ball bearings and sliding parts. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] In the figure, 1. Universal joint body; 2. Drive shaft; 3. Dust cover body; 4. Sliding part; 5. Ball bearing; 6. Slot 1; 7. Slot 2; 8. Connecting spring; 9. Fixing part; 10. Cover; 11. Abutting part. Detailed Implementation

[0011] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0012] like Figure 1 As shown, this ball joint includes a universal joint body 1, a drive shaft 2 extending into the universal joint body 1, a dust cover assembly between the drive shaft 2 and the universal joint body 1, the dust cover assembly including a dust cover body 3, one end of the dust cover body 3 being disposed on the drive shaft 2 and the other end being disposed on the universal joint body 1, the universal joint body 1 having an annular groove for one end of the dust cover body 3 to extend into, a sliding part 4 being disposed on the outer side of the universal joint body 1 for sliding up and down, a plurality of balls 5 being disposed between the sliding part 4 and the annular groove, the universal joint body 1 having a rolling groove for the balls 5 to roll, the sliding part 4 having a first groove 6 that mates with the balls 5, the dust cover body 3 having a second groove 7 that mates with the balls 5, the universal joint body 1 having a stepped part, and a connecting spring 8 being disposed between the sliding part 4 and the stepped part.

[0013] To elaborate further, when the dust cover assembly needs to be installed, first move the sliding part 4 downwards, compress the connecting spring 8, and allow the ball bearing 5 to extend into the slot 6. Then, extend the fixing part 9 at the lower end of the dust cover into the annular groove. After installation, the connecting spring 8 returns, moving the sliding part 4 upwards. The ball bearing 5 is pressed by the inner wall of the sliding part 4, causing one side of the ball bearing 5 to extend into the slot 7 of the dust cover body 3, thereby fixing the dust cover body 3. When the dust cover assembly needs to be disassembled, move the sliding part 4 downwards until the slot 6 corresponds to the ball bearing 5, and the dust cover assembly can be removed from the universal joint body 1, making it convenient for staff to repair and replace the internal parts of the universal joint body 1.

[0014] To elaborate further, the dust cover body 3 is divided into a cover body 10 and two fixing parts 9. The cover body 10 is made of soft rubber material. One of the fixing parts 9 is located at the lower end of the dust cover body 3 for inserting into the annular groove for fixing. The other fixing part 9 is set on the drive shaft 2 by a clamp.

[0015] To elaborate further, when the dust cover assembly is installed, one end of the ball bearing 5 is in contact with the inner wall of the sliding part 4, and the other end of the ball bearing 5 extends into the slot 7 and fixes the dust cover body 3.

[0016] To elaborate further, the universal joint body 1 is provided with a stop part 11 for the upper end of the sliding part 4 to abut against.

[0017] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0018] Although this document frequently uses terms such as universal joint body 1, drive shaft 2, dust cover body 3, sliding part 4, ball bearing 5, slot one 6, slot two 7, connecting spring 8, fixing part 9, cover 10, and abutment part 11, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A ball joint, comprising a joint body (1), wherein a drive shaft (2) is provided on the joint body (1) extending into the joint body (1), and a dust cover assembly is provided between the drive shaft (2) and the joint body (1), characterized in that, The dust cover assembly includes a dust cover body (3), one end of which is mounted on the drive shaft (2) and the other end is mounted on the universal joint body (1). The universal joint body (1) has an annular groove into which one end of the dust cover body (3) extends. The outer side of the universal joint body (1) has a sliding part (4) that slides up and down on it. A plurality of balls (5) are provided between the sliding part (4) and the annular groove. The universal joint body (1) has a rolling groove for the balls (5) to roll. The sliding part (4) has a first groove (6) that cooperates with the balls (5). The dust cover body (3) has a second groove (7) that cooperates with the balls (5). The universal joint body (1) has a stepped part. A connecting spring (8) is provided between the sliding part (4) and the stepped part.

2. The ball cage universal joint according to claim 1, characterized in that, The dust cover body (3) is divided into a cover body (10) and two fixing parts (9). The cover body (10) is made of soft rubber material. One of the fixing parts (9) is located at the lower end of the dust cover body (3) for inserting into the ring groove for fixing. The other fixing part (9) is set on the drive shaft (2) by a clamp.

3. A ball cage universal joint according to claim 1, characterized in that, When the dust cover assembly is installed, one end of the ball (5) is connected to the inner wall of the sliding part (4), and the other end of the ball (5) extends into the slot 2 (7) and fixes the dust cover body (3).

4. A ball cage universal joint according to claim 1, characterized in that, The universal joint body (1) is provided with a stop part (11) for the upper end of the sliding part (4) to abut against.

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