Ball-type automobile steering column intermediate shaft member

Abstract

This utility model relates to the field of steering column technology and discloses a ball bearing type automotive steering column intermediate shaft component, including a mandrel sleeve, a steel ball, and a mandrel body. The mandrel sleeve and the mandrel body are interference-fitted. The steel ball is disposed between the mandrel sleeve and the mandrel body. One side of the mandrel sleeve is fixedly connected to an inlet for injecting lubricating oil, and a sealing mechanism is provided on one side of the inlet. The sealing mechanism includes a sealing cap fitted onto the surface of the inlet. By setting the sealing mechanism, the user can inject lubricating oil into the mandrel sleeve through the inlet and then snap the sealing cap onto the inlet. One end of the inlet will just abut against the sealing gasket. At the same time, with the help of two sealing rings, a multi-layer sealing effect is achieved. The lubricating oil inside the mandrel sleeve can lubricate the steel ball, thereby reducing the wear of the steel ball and improving the service life of the steering column intermediate shaft component.

Description

Technical Field

[0001] This utility model relates to the field of steering column technology, specifically to a ball bearing type automotive steering column intermediate shaft component. Background Technology

[0002] The steering column is the core mechanical component of a vehicle's steering system. Its functions include transmitting steering torque to the driver, adjusting the steering wheel position, and absorbing collision energy. Based on the form of power assistance, it can be divided into three main types: mechanical, hydraulic power assist, and electro-hydraulic power assist. The intermediate shaft component of a ball-bearing automotive steering column consists of a spindle sleeve, several steel balls, and the spindle body.

[0003] A search revealed a Chinese patent document disclosing a ball-bearing automotive steering column intermediate shaft component [Announcement No.: CN203996394U]. This component includes a mandrel sleeve, steel balls, and a mandrel body. The mandrel sleeve mates with the mandrel body. The inner wall of the mandrel sleeve has multiple first steel ball mounting grooves along the axial direction, and the outer wall of the mandrel body has multiple second steel ball mounting grooves along the axial direction. The multiple first steel ball mounting grooves and multiple second steel ball mounting grooves are aligned one-to-one. An elastic retainer is provided within the second steel ball mounting groove, and several steel balls are disposed within the space formed by the elastic retainer and the first steel ball mounting groove. This reduces wear caused by rotation, improves steering torque transmission efficiency, and lowers replacement costs.

[0004] During the rotation of the steering column intermediate shaft component, the steel balls play a role in improving rotational stability and smoothness. However, long-term use can also lead to severe wear of the steel balls, affecting the service life of the steering column intermediate shaft component.

[0005] To address this problem, we propose a ball-bearing automotive steering column intermediate shaft component. Utility Model Content

[0006] The purpose of this invention is to provide a ball-bearing automotive steering column intermediate shaft component to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a ball bearing type automotive steering column intermediate shaft component, comprising a mandrel sleeve, a steel ball, and a mandrel body, wherein the mandrel sleeve is interference-fitted with the mandrel body, the steel ball is disposed between the mandrel sleeve and the mandrel body, and one side of the mandrel sleeve is fixedly connected to an inlet for injecting lubricating oil, and a sealing mechanism is provided on one side of the inlet.

[0008] The sealing mechanism includes a sealing cap fitted onto the surface of the liquid inlet. A sealing gasket is fixedly connected to one side of the inner wall of the sealing cap. Two sealing rings are fixedly connected to the circumferential side of the inner wall of the sealing cap. Housings are fixedly connected to both sides of the sealing cap. A snap-fit ​​block is provided on one side of the housing. One side of the snap-fit ​​block is fixedly connected to one side of the mandrel sleeve. A snap-fit ​​groove for cooperating with the snap-fit ​​block is opened on the other side of the snap-fit ​​block. A positioning mechanism is provided inside the housing.

[0009] Preferably, the positioning mechanism includes a linkage block disposed inside the housing, and a movable block is disposed at the top and bottom of the linkage block. The linkage block and the movable block are connected by a connecting rod. A positioning rod is fixedly connected to the side of the two movable blocks that are far apart from each other. One end of the positioning rod extends through to the outside of the housing. The inner wall of the snap-fit ​​groove is provided with a positioning hole for use with the positioning rod.

[0010] A push rod is fixedly connected to one side of the linkage block, and one end of the push rod extends through to the outside of the housing and is fixedly connected to the push block.

[0011] Preferably, a spring is provided inside the housing, and the two ends of the spring are respectively fixedly connected to one side of the two movable blocks.

[0012] Preferably, sliding blocks are fixedly connected to both sides of the movable block, and the inner wall of the housing is provided with sliding grooves that cooperate with the sliding blocks.

[0013] Preferably, a traction belt is fixedly connected to one side of the sealing cover, and one end of the traction belt is fixedly connected to one side of the mandrel sleeve.

[0014] Preferably, the traction belt is made of rubber and is capable of being stretched.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. By setting a sealing mechanism, the user can inject lubricating oil into the mandrel sleeve through the inlet, and then put the sealing cap on the inlet. One end of the inlet will just abut against the sealing gasket. At the same time, with the help of two sealing rings, a multi-layer sealing effect is achieved. The lubricating oil inside the mandrel sleeve can lubricate the steel ball, thereby reducing the wear of the steel ball and improving the service life of the intermediate shaft component of the steering column.

[0017] 2. This utility model, by setting a positioning mechanism, enables the pushing block, pushing rod, and linkage block to move towards the side closer to the mandrel sleeve by pressing the pushing block. The linkage block will drive two moving blocks to move towards the side closer to the spring through the connecting rod. The moving blocks will then drive the positioning rod to retract into the housing. At this time, the position of the snap-fit ​​groove and the housing is aligned, and the sealing cover is snapped onto the liquid inlet. At the same time, the housing will enter the snap-fit ​​groove. After that, the pushing block is released, and the elastic force generated by the spring will push the moving block to the side away from the spring. The moving block will then drive the positioning rod into the corresponding positioning hole, completing the fixation of the sealing cover and preventing the sealing cover from detaching from the liquid inlet. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a perspective view of a partial structure of the present invention;

[0020] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0021] Figure 4 This is a perspective view of the side section of the shell in this utility model;

[0022] Figure 5 This is a perspective view of the positioning mechanism in this utility model.

[0023] In the diagram: 1. Mandrel sleeve; 2. Steel ball; 3. Mandrel body; 4. Liquid inlet; 5. Sealing cap; 6. Sealing gasket; 7. Sealing ring; 8. Housing; 9. Snap-fit ​​block; 10. Snap-fit ​​groove; 11. Linkage block; 12. Moving block; 13. Connecting rod; 14. Positioning rod; 15. Positioning hole; 16. Push rod; 17. Push block; 18. Spring; 19. Sliding block; 20. Sliding groove; 21. Traction belt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 - Figure 5 As shown,

[0026] Example 1:

[0027] A ball bearing type automotive steering column intermediate shaft component includes a spindle sleeve 1, a steel ball 2 and a spindle body 3. The spindle sleeve 1 and the spindle body 3 are interference-fitted. The steel ball 2 is disposed between the spindle sleeve 1 and the spindle body 3. One side of the spindle sleeve 1 is fixedly connected to an inlet 4 for injecting lubricating oil. A sealing mechanism is provided on one side of the inlet 4.

[0028] The sealing mechanism includes a sealing cap 5 fitted onto the surface of the liquid inlet 4. A sealing gasket 6 is fixedly connected to one side of the inner wall of the sealing cap 5. Two sealing rings 7 are fixedly connected to the circumferential side of the inner wall of the sealing cap 5. A housing 8 is fixedly connected to both sides of the sealing cap 5. A snap-fit ​​block 9 is provided on one side of the housing 8. One side of the snap-fit ​​block 9 is fixedly connected to one side of the mandrel sleeve 1. A snap-fit ​​groove 10 that cooperates with the snap-fit ​​block 9 is provided on the other side of the snap-fit ​​block 9. A positioning mechanism is provided inside the housing 8.

[0029] In this embodiment, considering that the steel ball 2 plays a role in improving the rotational stability and smoothness of the steering column intermediate shaft component during rotation, but long-term use will also lead to severe wear of the steel ball 2, affecting the service life of the steering column intermediate shaft component, a sealing mechanism is set up. The user can inject lubricating oil into the mandrel sleeve 1 through the inlet 4, and then the sealing cap 5 is clipped onto the inlet 4. One end of the inlet 4 will just abut against the sealing gasket 6. At the same time, the two sealing rings 7 achieve a multi-layer sealing effect. The lubricating oil inside the mandrel sleeve 1 can lubricate the steel ball 2, thereby reducing the wear of the steel ball 2 and improving the service life of the steering column intermediate shaft component.

[0030] A traction belt 21 is fixedly connected to one side of the sealing cover 5, and one end of the traction belt 21 is fixedly connected to one side of the mandrel sleeve 1.

[0031] In this embodiment, by setting a traction belt 21, the sealing cap 5 can be prevented from being lost due to workers' carelessness during the oil filling process, thus playing a role in preventing loss.

[0032] The traction belt 21 is made of rubber and is capable of being stretched.

[0033] In this embodiment, by setting a traction belt 21, the material of the traction belt 21 can be set to rubber, which allows the sealing cover 5 to be stretched further by the traction belt 21, thus preventing the sealing cover 5 from blocking the liquid inlet 4 and affecting the normal injection of lubricating oil into the liquid inlet 4.

[0034] Example 2:

[0035] Based on Embodiment 1, this embodiment only considers that the sealing cap 5 is fitted onto the liquid inlet 4 by means of snap-fit. The sealing cap 5 will fall off due to external force, causing the lubricating oil to leak from the liquid inlet 4. In this application, the positioning mechanism includes a linkage block 11 set inside the housing 8. The top and bottom of the linkage block 11 are provided with moving blocks 12. The linkage block 11 and the moving blocks 12 are connected by a connecting rod 13. The two moving blocks 12 are fixedly connected to the side away from each other by a positioning rod 14. One end of the positioning rod 14 extends through to the outside of the housing 8. The inner wall of the snap-fit ​​groove 10 is provided with a positioning hole 15 that cooperates with the positioning rod 14.

[0036] A push rod 16 is fixedly connected to one side of the linkage block 11. One end of the push rod 16 extends through to the outside of the housing 8 and is fixedly connected to a push block 17.

[0037] In this embodiment, by setting a positioning mechanism, the push block 17, push rod 16 and linkage block 11 can be moved closer to the mandrel sleeve 1 by pressing the push block 17. The linkage block 11 will drive the two moving blocks 12 to move closer to the spring 18 through the connecting rod 13. The moving blocks 12 will drive the positioning rod 14 to retract into the housing 8. At this time, the position of the snap-fit ​​groove 10 and the housing 8 is aligned, and the sealing cover 5 is snapped into the liquid inlet 4. At the same time, the housing 8 will enter the snap-fit ​​groove 10. Then, the push block 17 is released, and the elastic force generated by the spring 18 will push the moving block 12 to move away from the spring 18. The moving block 12 will drive the positioning rod 14 into the corresponding positioning hole 15, completing the fixation of the sealing cover 5, so that the sealing cover 5 cannot be detached from the liquid inlet 4.

[0038] A spring 18 is installed inside the housing 8, and the two ends of the spring 18 are fixedly connected to one side of the two moving blocks 12 respectively.

[0039] In this embodiment, by setting a spring 18, when the push block 17 is released, the elastic force generated by the spring 18 will push the moving block 12 to move away from the spring 18. The moving block 12 will then drive the positioning rod 14 into the corresponding positioning hole 15, thus achieving the function of resetting.

[0040] Sliding blocks 19 are fixedly connected to both sides of the movable block 12, and a sliding groove 20 is provided on the inner wall of the housing 8 to cooperate with the sliding block 19.

[0041] In this embodiment, by setting the sliding block 19 and the sliding groove 20, the movement trajectory of the moving block 12 and the positioning rod 14 can be restricted, so that they can only move along the trajectory of the sliding groove 20.

[0042] Working principle: Lubricating oil is injected into the mandrel sleeve 1 through the inlet 4. Then, pressing the push block 17 causes the push block 17, push rod 16, and linkage block 11 to move towards the mandrel sleeve 1. The linkage block 11, through the connecting rod 13, drives the two moving blocks 12 to move towards the spring 18. The moving blocks 12 then drive the positioning rod 14 to retract into the housing 8. At this point, the locking groove 10 is aligned with the housing 8, and the sealing cover 5 is locked onto the inlet 4. One end of the inlet 4 will just touch the sealing cover. On the pad 6, two sealing rings 7 work together to achieve a multi-layer sealing effect. The lubricating oil inside the spindle sleeve 1 can lubricate the steel ball 2, thereby reducing the wear of the steel ball 2. At the same time, the housing 8 will enter the snap-fit ​​groove 10. Then, the push block 17 is released, and the elastic force generated by the spring 18 will push the moving block 12 to move away from the spring 18. The moving block 12 will drive the positioning rod 14 into the corresponding positioning hole 15, completing the fixation of the sealing cover 5, so that the sealing cover 5 cannot be detached from the liquid inlet 4.

[0043] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ball-type intermediate shaft member for a steering column of a vehicle, comprising a core sleeve (1), a steel ball (2) and a core body (3), the core sleeve (1) being interference-fitted with the core body (3), the steel ball (2) being disposed between the core sleeve (1) and the core body (3), characterized in that: One side of the mandrel sleeve (1) is fixedly connected to an inlet (4) for injecting lubricating oil, and a sealing mechanism is provided on one side of the inlet (4). The sealing mechanism includes a sealing cap (5) fitted onto the surface of the liquid inlet (4). A sealing gasket (6) is fixedly connected to one side of the inner wall of the sealing cap (5). Two sealing rings (7) are fixedly connected to the circumferential side of the inner wall of the sealing cap (5). A housing (8) is fixedly connected to both sides of the sealing cap (5). A snap-fit ​​block (9) is provided on one side of the housing (8). One side of the snap-fit ​​block (9) is fixedly connected to one side of the mandrel sleeve (1). A snap-fit ​​groove (10) is provided on the other side of the snap-fit ​​block (9) to cooperate with the snap-fit ​​block (9). A positioning mechanism is provided inside the housing (8).

2. A roll- type vehicle steering column intermediate shaft member according to claim 1, characterized in that: The positioning mechanism includes a linkage block (11) disposed inside the housing (8). The top and bottom of the linkage block (11) are provided with moving blocks (12). The linkage block (11) and the moving blocks (12) are connected by a connecting rod (13). The two moving blocks (12) are fixedly connected to a positioning rod (14) on the side away from each other. One end of the positioning rod (14) extends through to the outside of the housing (8). The inner wall of the snap-fit ​​groove (10) is provided with a positioning hole (15) that cooperates with the positioning rod (14). A push rod (16) is fixedly connected to one side of the linkage block (11), and one end of the push rod (16) extends through to the outside of the housing (8) and is fixedly connected to a push block (17).

3. A roll- steer automotive steering column intermediate shaft assembly according to claim 2, wherein: A spring (18) is provided inside the housing (8), and the two ends of the spring (18) are fixedly connected to one side of the two moving blocks (12).

4. A roll-bond automotive steering column intermediate shaft assembly according to claim 2, wherein: Both sides of the movable block (12) are fixedly connected to sliding blocks (19), and the inner wall of the housing (8) is provided with sliding grooves (20) that cooperate with the sliding blocks (19).

5. A roll- type steering column intermediate shaft assembly according to any one of claims 1 to 4, characterized in that: A traction belt (21) is fixedly connected to one side of the sealing cover (5), and one end of the traction belt (21) is fixedly connected to one side of the mandrel sleeve (1).

6. A roll- steer automotive steering column intermediate shaft assembly according to claim 5, wherein: The traction belt (21) is made of rubber and is capable of being stretched.

Images