Automobile auxiliary frame bushing

Abstract

The utility model relates to the technical field of automobile linings, in particular to an automobile auxiliary frame lining which comprises an inner lining pipe, a rubber layer and an outer lining pipe which are coaxially arranged, the outer lining pipe is located on the outer side of the inner lining pipe, and the outer lining pipe comprises an inner sleeve and an outer sleeve; the rubber layer is located between the lining pipe and the inner sleeve, and the inner sleeve is sleeved with the outer sleeve. According to the utility model, the bushing can be mounted and replaced more conveniently, and time and labor are saved.

Description

Technical Field

[0001] This utility model relates to the field of automotive bushing technology, specifically to an automotive subframe bushing. Background Technology

[0002] In the moving parts of an automobile, wear occurs due to long-term friction. When the clearance between shafts and holes wears to a certain extent, the parts must be replaced. Therefore, designers choose materials with lower hardness and better wear resistance for bushings or bushings to reduce wear on shafts and seats. Currently, there are many bushing models on the market, most of which include an inner tube, an outer tube, and a rubber layer. For example, there is a patent with announcement number CN207360418U entitled "Subframe Bushing and Vehicle". Generally, bushings are connected to seats or steering knuckles with an interference fit, while they are connected to shafts with a clearance fit. Replace bushings or bushings when they are worn to a certain extent. This can save the cost of replacing the shaft or seat. When replacing or installing bushings, tools such as sleeves, C-pliers, and wrenches are required. For example, during installation, one end of the bushing needs to be pre-embedded in the inner hole of the steering knuckle with a hammer. Then, the C-pliers are placed on the machine. After that, the sleeve is placed between the bushing and the C-pliers so that the bushing, sleeve, and the push rod of the C-pliers are in a straight line. Finally, the C-pliers are turned with a wrench to gradually press the bushing into the steering knuckle. This installation process is relatively time-consuming and labor-intensive. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automotive subframe bushing that makes the installation and replacement of the bushing more convenient, time-saving and labor-saving.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automotive subframe bushing, comprising an inner liner tube, a rubber layer, and an outer liner tube arranged coaxially, the outer liner tube being located outside the inner liner tube, the outer liner tube comprising an inner sleeve and an outer sleeve; the rubber layer being located between the inner liner tube and the inner sleeve, the outer sleeve being fitted onto the inner sleeve; the outer liner tube having protrusions on its outer periphery.

[0005] Preferably, the outer diameter of at least a portion of the protrusion gradually increases along the axial direction of the outer sleeve.

[0006] Preferably, the outer sleeve consists of an extension section, an inclined section, and a connecting section, wherein the outer diameter of the connecting section is larger than the outer diameter of the extension section.

[0007] Preferably, the outer sleeve and the inner sleeve are connected by threads.

[0008] Preferably, the inner sleeve is provided with a limiting ring in the middle; there are two outer sleeves, which are arranged facing each other on both sides of the limiting ring; both extension sections abut against the limiting ring.

[0009] Preferably, the limiting ring is made of rubber; the outer diameter of the limiting ring is not less than the outer diameter of the connecting section.

[0010] Preferably, the end of the connecting segment furthest from the extension segment has a polygonal structure.

[0011] Preferably, the length of the extension segment is greater than the length of the connecting segment.

[0012] Preferably, the inner liner tube has multiple weight-reducing holes along its axial direction.

[0013] Preferably, the plurality of weight-reducing holes are distributed around the axis of the inner liner tube.

[0014] Compared with the prior art, the beneficial effects of this utility model are: by setting the outer bushing tube as an assemblable structure consisting of an inner sleeve and two outer sleeves, and with the outer diameter of the outer sleeve gradually increasing in some parts, the subframe bushing can be quickly installed or replaced through the tight fit between the outer sleeve and the steering knuckle, which greatly improves the installation and maintenance efficiency of the vehicle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the frame bushing of this utility model;

[0016] Figure 2 This is an exploded view of the frame bushing of this utility model;

[0017] Figure 3 This is a schematic diagram of the upper structure of the frame bushing of this utility model;

[0018] Figure 4 For the present utility model Figure 3 Schematic diagram of the cross section along the AA direction.

[0019] In the diagram: 1 Inner liner, 2 Rubber layer, 3 Inner sleeve, 4 Outer sleeve, 11 Weight reduction hole, 31 Limiting ring, 41 Extension section, 42 Inclined section, 43 Connecting section. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.

[0021] See Figure 1-4In one embodiment of this utility model, an automotive subframe bushing includes: an inner liner tube 1, a rubber layer 2, and an outer liner tube arranged coaxially. The outer liner tube is located outside the inner liner tube 1, and the rubber layer 2 is disposed between the outer liner tube and the inner liner tube 1. It can be understood that the outer wall of the rubber layer 2 abuts against the inner surface of the outer liner tube, and the inner wall of the rubber layer 2 at least partially abuts against the outer surface of the inner liner tube 1. The outer liner tube is composed of an inner sleeve 3 and two outer sleeves 4. The rubber layer 2 is located between the inner sleeve 3 and the inner liner tube 1, and the two outer sleeves 4 are sleeved on both ends of the inner sleeve 3 facing each other. The outer diameter of at least part of the outer sleeve 4 gradually increases along the axial direction of the outer sleeve 4. This assembled subframe bushing structure can facilitate the installation or replacement of the subframe bushing, saving time and effort.

[0022] The inner sleeve 3 and the outer sleeve 4 are connected by threads. For this purpose, the outer circumference of the inner sleeve 3 is provided with external threads, while the inner circumference of the outer sleeve 4 is provided with internal threads that match the external threads. Furthermore, in order to improve the overall integrity of the two outer sleeves 4 when they are installed in place, a limiting ring 31 protruding from the body of the inner sleeve 3 is provided in the middle of the outer circumference of the inner sleeve 3. After the two outer sleeves 4 are installed from both ends of the inner sleeve 3, the two outer sleeves 4 abut against the limiting ring 31.

[0023] In one embodiment, the outer sleeve 4 is provided with an extension section 41, an inclined section 42, and a connecting section 43 in sequence in the direction away from the limiting ring 31, wherein the outer diameter of the extension section 41 is smaller than the outer diameter of the connecting section 43. It can be understood that the inclined section 42 exists as a transition section between the extension section 41 and the connecting section 43. After installation, the two extension sections 41 abut against the limiting ring 31, and the two connecting sections 43 are located at both ends of the inner sleeve 3. In this embodiment, the outer diameter of the limiting ring 31 is smaller than the inner diameter of the steering knuckle inner hole.

[0024] During implementation, the outer diameter of the extension section 41 should be smaller than the inner diameter of the steering knuckle inner hole, while the outer diameter of the connecting section 43 should be slightly larger than the inner diameter of the steering knuckle inner hole. During installation, the subframe bushing can be installed on the steering knuckle by using the tight fit between the connecting section 43 and the steering knuckle. Specifically, when installing the subframe bushing, the outer sleeve 4 needs to be removed first. The subframe bushing with the outer sleeve 4 removed can be easily placed inside the steering knuckle. Then, the subframe bushing is fixed inside the steering knuckle by screwing the outer sleeve 4 into the two ends with a wrench. This installation method is similar to the installation of expansion bolts. The subframe bushing can be quickly installed or replaced by screwing in or out the outer sleeve 4.

[0025] In one embodiment, to facilitate the installation of the subframe bushing, the length of the connecting section 43 can be set to be less than the length of the extension section 41. The smaller the length of the connecting section 43, the smaller the contact area between the outer sleeve 4 and the steering knuckle, the smaller the force required to screw in the outer sleeve 4, and the easier the installation of the subframe bushing.

[0026] In one embodiment, the end of the connecting segment 43 away from the extension segment 41 has a polygonal structure, which can be used with a wrench to facilitate the outer sleeve 4 being fitted onto the inner sleeve 3.

[0027] In one embodiment, the inner liner tube 1 has three weight-reducing holes 11 distributed around its axis along its axial direction.

[0028] In one embodiment, the limiting ring 31 can be made of rubber. The outer diameter of the limiting ring 31 is slightly larger than the inner diameter of the steering knuckle inner hole. The limiting ring 31 is sleeved on the inner sleeve 3 body. During installation, the subframe bushing can be pre-installed in the steering knuckle by tightly fitting the limiting ring 31 with the steering knuckle. Then, the outer sleeve 4 is screwed in to make the outer sleeve 4 tightly fit with the steering knuckle, thus finally realizing the installation of the subframe bushing. It can be seen from this that the outer diameter of the limiting ring 31 is larger than the outer diameter of the extension section 41, but can be the same as or similar to the outer diameter of the connecting section 43.

[0029] This technical solution enables the rapid installation or replacement of the subframe bushing by setting the outer bushing as an assemblable structure consisting of an inner sleeve and two outer sleeves, with the outer diameter of the outer sleeves gradually increasing in some areas. The tight fit between the outer sleeve and the steering knuckle allows for the rapid installation or replacement of the subframe bushing, greatly improving the efficiency of vehicle installation and maintenance.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A vehicle subframe bushing, comprising an inner liner tube (1), a rubber layer (2), and an outer liner tube arranged coaxially, the outer liner tube being located outside the inner liner tube (1), characterized in that: The outer liner tube includes an inner sleeve (3) and an outer sleeve (4); the rubber layer (2) is located between the inner liner tube (1) and the inner sleeve (3), and the outer sleeve (4) is sleeved on the inner sleeve (3); the outer sleeve (4) has protrusions on its outer periphery.

2. The automotive subframe bushing according to claim 1, characterized in that: The outer diameter of at least part of the protrusion gradually increases along the axial direction of the outer sleeve (4).

3. The automotive subframe bushing according to claim 1, characterized in that: The outer sleeve (4) consists of an extension section (41), an inclined section (42) and a connecting section (43), with the outer diameter of the connecting section (43) being larger than that of the extension section (41).

4. The automotive subframe bushing according to claim 1, characterized in that: The outer sleeve (4) and the inner sleeve (3) are connected by threads.

5. The automotive subframe bushing according to claim 3, characterized in that: The inner sleeve (3) is provided with a limiting ring (31) in the middle; there are two outer sleeves (4), which are arranged facing each other on both sides of the limiting ring (31); both extension sections (41) abut against the limiting ring (31).

6. The automotive subframe bushing according to claim 5, characterized in that: The limiting ring (31) is made of rubber; the outer diameter of the limiting ring (31) is not less than the outer diameter of the connecting section (43).

7. The automotive subframe bushing according to claim 3, characterized in that: The end of the connecting segment (43) away from the extension segment (41) has a polygonal structure.

8. The automotive subframe bushing according to claim 3, characterized in that: The length of the extension segment (41) is greater than the length of the connecting segment (43).

9. The automotive subframe bushing according to claim 1, characterized in that: The inner liner tube (1) has multiple weight-reducing holes (11) along its axial direction.

10. The automotive subframe bushing according to claim 9, characterized in that: Multiple weight-reducing holes (11) are distributed around the axis of the inner liner tube (1).

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