Pull rod assembly for automobile maintenance

Abstract

The utility model relates to a pull rod assembly for automobile maintenance, which comprises a pull rod body and a stop dog, a first end of the pull rod body is provided with a mounting groove which extends along the axial direction and penetrates along the radial direction, the stop dog can be rotatably restrained in the mounting groove, and the joint of the stop dog and the mounting groove divides the stop dog into a first part and a second part. The length of the first part is larger than that of the second part, when the pull rod body is horizontally placed and rotates in the circumferential direction, the check block rotates under the gravity difference of the first part and the second part, and a positioning block capable of limiting the check block in the state that the check block is transversely contained in the installation groove or vertically extends out of the installation groove is further arranged in the installation groove. The stop dog can be switched between the storage state and the use state only by rotating the pull rod body, operation is convenient and labor-saving, the length of the pull rod body can meet the depth requirements of tires of different specifications, and the application range is wide.

Description

Technical Field

[0001] This utility model relates to the field of automotive repair tools, specifically to a tie rod assembly for automotive repair. Background Technology

[0002] A wheel cover is a cap or cover installed on the rims of a car's wheels. Wheel covers enhance the appearance of a vehicle, making it look more upscale and personalized. They also help reduce aerodynamic drag, lower wind noise, and improve speed and fuel economy. For new energy vehicles, reduced wind resistance improves energy efficiency and driving range. Furthermore, wheel covers protect the rims from external damage such as stone chips or scratches, and are waterproof and dustproof, helping to extend the rims' lifespan. In summary, wheel covers not only enhance the aesthetics of a vehicle but also provide practical protection and performance improvements, making them an indispensable part of modern automotive design.

[0003] When repairing tires, it is usually necessary to remove the wheel cover. Because the access holes on the wheel cover are small, when it needs to be removed, repair personnel can only insert their fingers into the access holes and use considerable force to remove the wheel cover. This is not only laborious and inconvenient, but also prone to causing localized damage to the wheel cover due to improper force control. Furthermore, for trucks with heavy load capacities, the tires are large, and correspondingly, the tire depth is also significant. This results in the wheel cover, which is mounted on the tire sidewall, often being a considerable distance from the side of the truck. Repair personnel often have limited arm length to reach the wheel cover, further complicating the removal and installation of the wheel cover. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a tie rod assembly for automobile repair that is labor-saving, easy to operate, and can meet the needs of different tire specifications, in light of the current state of the technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a tie rod assembly for automobile repair, including a tie rod body and a stop block. The first end of the tie rod body is provided with a mounting groove that extends axially and penetrates radially. The stop block is rotatably constrained in the mounting groove. The connection between the stop block and the mounting groove divides the stop block into a first part and a second part. The length of the first part is greater than that of the second part. When the tie rod body is placed horizontally and rotates circumferentially, the stop block rotates under the gravity difference between the first part and the second part. The mounting groove is also provided with a positioning block that can limit the stop block when it is laterally accommodated in the mounting groove or vertically extended outside the mounting groove.

[0006] Preferably, when the stop block is laterally accommodated within the mounting groove, the end of the first portion protrudes beyond the end face of the first end of the pull rod body, forming a first state that facilitates passage through the operating hole on the wheel hub cover; when the stop block extends vertically outside the mounting groove, the first portion extends below the mounting groove, and the second portion extends above the mounting groove, forming a second state that abuts against the inner side of the wheel hub cover. Using the above scheme, when the stop block is in the first state, the pull rod body and the stop block pass through the operating hole on the wheel hub cover. Then, by circumferentially rotating the pull rod body, the stop block rotates under the influence of gravity, thus entering the second state. At this time, the first and second portions of the stop block abut against the inner side of the wheel hub cover, applying force to the second end of the pull rod body to pull the wheel hub cover out.

[0007] To facilitate control of the rotation angle of the stop, the positioning block is located at a radial edge of the mounting groove and is situated in the mounting groove inside the rotation axis of the stop.

[0008] Preferably, when the positioning block rotates with the pull rod body to its top position, it abuts against the side wall of the second part to form the first state; when the positioning block rotates with the pull rod body to its bottom position, it abuts against the side wall of the first part to form the second state. This structure allows the stop block to rotate freely with the pull rod body and further stabilize in either the first or second state when the pull rod body stops rotating, thus improving the reliability of use in the corresponding state.

[0009] Preferably, a pivot is provided between the two opposite sidewalls of the mounting groove, and the stop block has a shaft hole that fits onto the pivot. This structure facilitates the rotatable connection of the stop block to the mounting groove.

[0010] To facilitate the storage of the pull rod assembly, the pull rod body includes a front rod and a rear rod, with the rear rod sleeved on the outer wall of the front rod and the rear rod capable of sliding along the length of the front rod.

[0011] To fix the relative position between the front and rear poles, a movement limiting mechanism is provided between the front and rear poles, the movement limiting mechanism comprising:

[0012] A sliding groove is provided on the outer wall of the front rod and extends along the length direction of the front rod;

[0013] A limiting groove is provided on the outer wall of the front rod, located on one side of the sliding groove and communicating with the sliding groove;

[0014] A limiting block is disposed within the rod cavity of the rear rod; the limiting block can slide along the slide groove, and when the limiting block slides to a specific position, the rear rod is rotated to cause the limiting block to engage in the limiting groove.

[0015] To provide various length specifications, multiple limiting grooves are provided, each of which is located on the same side of the slide groove and is arranged at equal intervals along the length direction of the slide groove.

[0016] To facilitate the fixing of the front and rear rods, an elastic element is provided between the limiting block and the side wall of the sliding groove away from the limiting groove. The elastic element ensures that the limiting block always tends to slide into the limiting groove. The limiting block passes through the side wall of the rear rod and protrudes beyond the outer side wall of the rear rod. The limiting block slides relative to the sliding groove. When the limiting block approaches the limiting groove, the elastic element causes the limiting block to slide into the limiting groove, thereby fixing the relative position of the front and rear rods and thus maintaining a fixed length for the pull rod body.

[0017] To reduce wear between the limiting block and the limiting groove, the limiting groove extends circumferentially from the side wall of the slide groove along the front rod. The limiting groove has an arc-shaped bottom wall, which is coaxially arranged with the front rod.

[0018] Preferably, an auxiliary sleeve is provided at the rear end of the rear rod, and the friction coefficient of the auxiliary sleeve surface is greater than that of the rear rod.

[0019] Preferably, the outer side wall of the rear end of the rear rod is provided with threads, and a fixing nut to prevent the auxiliary sleeve from falling off is connected to the threads.

[0020] Compared with the prior art, the advantages of this utility model are as follows: This utility model rotatably connects the stop block to the first end of the pull rod body. When needed, the stop block is first adjusted to be arranged laterally relative to the pull rod body. At this time, it is convenient for the first end of the pull rod body and the stop block it carries to pass through the operating hole on the wheel cover and extend into the inside of the wheel cover. Then, the pull rod body is rotated circumferentially, so that the stop block rotates to a vertical state under the action of gravity difference. At this time, the stop block presses vertically against the back of the wheel cover. Pulling the pull rod body outward can pull out the wheel cover. In the above process, only the pull rod body needs to be rotated to switch the stop block between the storage state and the use state. The operation is convenient and labor-saving. The length of the pull rod body can meet the depth requirements of different tire specifications, and the application range is wide. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the pull rod assembly in the pulled-out state in an embodiment of this utility model;

[0022] Figure 2This is a schematic diagram of the pull rod assembly in its stowed state in an embodiment of this utility model;

[0023] Figure 3 for Figure 1 Exploded view of the tie rod assembly;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 for Figure 1 Cross-sectional view of the tie rod assembly;

[0026] Figure 6 This is a schematic diagram of the tie rod assembly in its first state in an embodiment of this utility model;

[0027] Figure 7 This is a schematic diagram of the tie rod assembly in the second state in an embodiment of this utility model. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] like Figures 1-7 The present invention is shown as a preferred embodiment of the tie rod assembly for automobile repair. The tie rod assembly includes a front rod 11, a rear rod 12 and a stop block 2. The rear rod 12 is sleeved on the outer peripheral wall of the front rod 11, and the stop block 2 is rotatably connected to the first end of the front rod 11.

[0030] like Figure 1 , 4 As shown, the stop block 2 is long and narrow, and the stop block 2 is provided with a shaft hole 20. The shaft hole 20 divides the stop block 2 into a first part 22 and a second part 21. The length of the first part 22 is greater than the length of the second part 21.

[0031] The front rod 11 is a solid rod. A mounting groove 1a, extending axially and penetrating radially, is provided at the first end of the front rod 11. A mounting hole 111 is provided on each of the two opposite side walls of the mounting groove 1a. A rotating shaft 3 is provided within the mounting groove 1a, with both ends of the rotating shaft 3 installed within the two mounting holes 111. A stop block 2 is fitted onto the rotating shaft 3 through a shaft hole 20. The rotating shaft 3 is parallel to the radial direction of the front rod 11. During the horizontal placement and circumferential rotation of the front rod 11, the stop block 2 can rotate around the rotating shaft 3 under the influence of the gravitational difference between the first part 22 and the second part 21.

[0032] The positioning block 10 is located at a radial edge of the mounting groove 1a and is located in the mounting groove 1a inside the rotation axis of the stop block 2.

[0033] like Figure 6As shown, when the positioning block 10 rotates with the front rod 11 to the state where it is located at the top of the front rod 11, the positioning block 10 abuts against the side wall of the second part 21 to form a first state; at this time, the positioning block 10 abuts against the side wall of the second part 21 to restrict the second part 21 from continuing to rotate upward, so that the length direction of the stop block 2 is consistent with the length direction of the front rod 11.

[0034] like Figure 7 As shown, when the positioning block 10 rotates with the front rod 11 to its bottom position, it forms a second state where the positioning block 10 abuts against the side wall of the first part 22. At this time, the positioning block 10 abuts against the side wall of the first part 22 to restrict the second part 21 from continuing to rotate inward, so that the length direction of the stop block 2 is perpendicular to the length direction of the front rod 11. When the front rod 11 is horizontally placed and rotates circumferentially, the stop block 2 can rotate around the axis of rotation 3 under the weight difference between the first part 22 and the second part 21, changing from the first state which is approximately parallel to the length direction of the front rod 11 to the second state which is approximately perpendicular to the length direction of the front rod 11.

[0035] The rear rod 12 is a hollow rod, fitted onto the outer wall of the front rod 11, and can slide along the length of the front rod 11. A groove 112 extending along the length of the front rod 11 is provided on the outer wall of the front rod 11. Correspondingly, a limiting block 4 penetrating the side wall of the rear rod 12 is provided. The inner end of the limiting block 4 is engaged in the groove 112, and the outer end of the limiting block 4 protrudes beyond the side wall of the rear rod 12. The limiting block 4 can slide along the groove 112. The relative sliding between the front rod 11 and the rear rod 12 can change the length of the entire tie rod assembly, allowing the tie rod assembly to be applied to more working conditions. Furthermore, several limiting grooves 113 are provided on the outer wall of the front rod 11, each groove 113 being equally spaced along the length of the groove 112. Each limiting hole 113 is located on one side of the groove 112 and communicates with it.

[0036] Furthermore, an elastic element (not shown in the figure) is provided between the limiting block 4 and the side wall of the slide groove 112 away from the limiting groove 113. The elastic element ensures that the limiting block 4 always tends to slide into the limiting groove 113. As the front rod 11 and the rear rod 12 slide relative to each other, when the limiting block 4 approaches a certain limiting groove 113, the elastic element presses the limiting block 4 into the limiting groove 113. When it is necessary to replace the limiting block 4 with a new limiting groove 113, the front rod 11 is fixed, and the outer end of the limiting block 4 is pushed to press the elastic element; the rear rod 12 is rotated circumferentially relative to the front rod 11, pushing the limiting block 4 into the slide groove 112. Then, the rear rod 12 can slide along the length direction of the front rod 11 until the limiting block 4 approaches the new limiting groove 113. Alternatively, without the elastic element, after the limiting block 4 slides with the slide groove 112, it is frictionally limited in the limiting groove 113 when sliding into the limiting groove 113.

[0037] like Figure 4 As shown, the limiting groove 113 extends from the side wall of the slide groove 112 along the circumference of the front rod 11. The limiting groove 113 is an arc-shaped bottom wall 1131, which is coaxially arranged with the front rod 11.

[0038] like Figure 5 As shown, an auxiliary sleeve 5 is provided at the rear end of the rear rod 12. The friction coefficient of the auxiliary sleeve 5 surface is greater than that of the rear rod 12. A thread 121 is provided on the outer side wall of the rear end of the rear rod 12, and a fixing nut 6 is connected to the thread 121 to prevent the auxiliary sleeve 5 from falling off. At the same time, after the pull rod assembly is stored, a sealing cap (not shown in the figure) is provided at the front end of the rear rod 12.

[0039] When using the pull rod assembly of this embodiment to disassemble the wheel hub cover: first, adjust the stop block 2 to be arranged laterally relative to the pull rod body 1, so that the first end of the pull rod body 1 and the stop block 2 it carries pass through the operating hole on the wheel hub cover and extend into the inside of the wheel hub cover. Then, rotate the pull rod body 1 circumferentially, so that the stop block 2 rotates to a vertical state under the action of gravity difference. At this time, the stop block 2 presses vertically against the back of the wheel hub cover. Pull the pull rod body 1 outward to pull out the wheel hub cover.

Claims

1. A tie rod assembly for automotive repair, characterized in that: The assembly includes a pull rod body (1) and a stop block (2). The first end of the pull rod body (1) has an axially extending and radially penetrating mounting groove (1a). The stop block (2) is rotatably constrained in the mounting groove (1a). The connection between the stop block (2) and the mounting groove (1a) divides the stop block (2) into a first part (22) and a second part (21). The length of the first part (22) is greater than that of the second part (21). When the pull rod body (1) is horizontally placed and rotates circumferentially, the stop block (2) rotates under the gravity difference between the first part (22) and the second part (21). The mounting groove (1a) is also provided with a positioning block (10) that can limit the stop block (2) when it is laterally accommodated in the mounting groove (1a) or vertically extended to the outside of the mounting groove (1a).

2. The tie rod assembly according to claim 1, characterized in that: With the stop block (2) laterally housed in the mounting groove (1a), the end of the first part (22) protrudes beyond the end face of the first end of the pull rod body (1), forming a first state that facilitates passing through the operating hole on the hub cover; With the stop block (2) extending vertically outside the mounting groove (1a), the first part (22) extends below the mounting groove (1a), and the second part (21) extends above the mounting groove (1a), forming a second state that can abut against the inner side of the wheel hub cover.

3. The tie rod assembly according to claim 2, characterized in that: The positioning block (10) is located at a radial edge of the mounting groove (1a) and is located in the mounting groove (1a) inside the rotation axis of the stop block (2).

4. The tie rod assembly according to claim 3, characterized in that: When the positioning block (10) rotates with the pull rod body (1) to the state where it is located at the top of the pull rod body (1), the positioning block (10) abuts against the side wall of the second part (21) to form the first state; When the positioning block (10) rotates with the pull rod body (1) to the state where it is located at the bottom of the pull rod body (1), the positioning block (10) abuts against the side wall of the first part (22) to form the second state.

5. The tie rod assembly according to claim 3, characterized in that: A rotating shaft (3) is provided between the two opposite side walls of the mounting groove (1a), and a shaft hole (20) is provided on the stop block (2) for fitting onto the rotating shaft (3).

6. The tie rod assembly according to any one of claims 1 to 5, characterized in that: The pull rod body (1) includes a front rod (11) and a rear rod (12). The rear rod (12) is sleeved on the outer side wall of the front rod (11) and can slide along the length direction of the front rod (11).

7. The tie rod assembly according to claim 6, characterized in that: A movement limiting mechanism is provided between the front rod (11) and the rear rod (12), the movement limiting mechanism including... A groove (112) is provided on the outer wall of the front rod (11) and extends along the length direction of the front rod (11); A limiting groove (113) is provided on the outer wall of the front rod (11), located on one side of the slide groove (112) and communicating with the slide groove (112); A limiting block (4) is provided in the rod cavity of the rear rod (12); the limiting block (4) can slide along the slide groove (112) and when the limiting block (4) slides to a specific position, the rear rod (12) is rotated so that the limiting block (4) is engaged in the limiting groove (113).

8. The tie rod assembly according to claim 7, characterized in that: Multiple limiting grooves (113) are provided, and each limiting groove (113) is located on the same side of the slide (112). Each limiting groove (113) is arranged at equal intervals along the length direction of the slide (112).

9. The tie rod assembly according to claim 6, characterized in that: An auxiliary sleeve (5) is provided at the rear end of the rear rod (12), and the friction coefficient of the surface of the auxiliary sleeve (5) is greater than that of the rear rod (12).

10. The tie rod assembly according to claim 9, characterized in that: The rear rod (12) has a thread (121) on its outer side wall at the rear end, and a fixing nut (6) is connected to the thread (121) to prevent the auxiliary sleeve (5) from falling off.

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