Front lower swing arm rear lining structure

Abstract

The utility model discloses a front lower swing arm rear bushing structure which comprises an outer steel bushing, an inner steel bushing and a rubber body, and the rubber body is arranged between the outer steel bushing and the inner steel bushing. The rubber body comprises a solid part and a hollow part; wherein the hollow part comprises a first end face and a second end face which are oppositely arranged, the two ends of one of the first end face and the second end face in the vertical direction are provided with inclined face parts, and the other one of the first end face and the second end face is a vertical face in the vertical direction, so that the first end face and the second end face can be gradually contacted or separated. The front lower swing arm rear lining structure can effectively reduce abnormal sound when swinging.

Description

Technical Field

[0001] The utility model relates to an automobile chassis component, in particular to a front lower swing arm rear bushing structure. Background Art

[0002] The rear bushing of the front lower arm is composed of an outer steel sleeve, a rubber body, and an inner steel sleeve. The existing rear bushing of the front lower arm is mostly arranged vertically, that is, the axis of the bushing is perpendicular to the ground (or almost perpendicular to the ground). Because the rear bushing of the front lower arm needs to swing with a large amplitude (up to ±15° or more) during driving, the structure of the rear bushing of the front lower arm has a hollow part and a solid part. That is, due to the existence of the hollow part, the bushing can swing greatly, but during the swinging process, the rubber inside and outside the hollow part will squeeze each other and rebound and separate, which is easy to cause abnormal noise and cause customer complaints.

[0003] The current solutions include: 1. Apply grease to the hollow part to reduce the friction coefficient of the contact surface and thus reduce abnormal noise. However, after long-term use, the grease will slowly fall off or be contaminated by dust, causing the abnormal noise to reoccur; 2. Add evenly arranged grooves 10 (such as Figure 3 As shown), the rubber will not suddenly contact, squeeze or separate over a large area, thereby reducing abnormal noise, but since the contact amount has not changed, the effect is not obvious; 3. A convex block 11 is added to the inner side of the hollow part (as shown Figure 4 As shown), the contact and separation of the rubber are suppressed, thereby suppressing the occurrence of abnormal noise. However, during the swinging process of the bushing, the protrusion increases the extrusion strength between the rubbers, which reduces the durability of the rubber body and makes it easy to crack. Utility Model Content

[0004] The utility model aims to provide a front lower swing arm rear bushing structure, aiming to solve the problem of reducing abnormal noise of the front lower swing arm rear bushing structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A front lower swing arm rear bushing structure, the structure comprising an outer steel sleeve, an inner steel sleeve and a rubber body, the rubber body being arranged between the outer steel sleeve and the inner steel sleeve; the rubber body comprising a solid part and a hollow part;

[0007] Among them, the hollow part includes a first end face and a second end face arranged opposite to each other, one of the first end face and the second end face is provided with an inclined portion at both ends along the up and down direction, and the other is a vertical surface along the up and down direction, so that the first end face and the second end face can gradually contact or disengage.

[0008] Preferably, the two inclined portions are symmetrically arranged.

[0009] Preferably, a vertical portion is between the two inclined portions.

[0010] Preferably, the inclined portion and the vertical portion are of equal width.

[0011] Preferably, the acute angle formed by the inclined portion and the up-down direction is less than or equal to 15°.

[0012] Preferably, the cross-sections of the first end surface and the second end surface along the radial direction of the rubber body are arc-shaped.

[0013] Preferably, the hollow portion further includes two limiting grooves, and the two limiting grooves are located at two ends of the first end surface and the second end surface.

[0014] Preferably, the first end surface is further away from the axis of the rubber body than the second end surface;

[0015] The first end surface is configured to have inclined surfaces at both ends along the up-down direction, and the second end surface is configured to be a vertical surface along the up-down direction.

[0016] Preferably, the rubber body includes two hollow parts.

[0017] Preferably, the two hollow parts are symmetrically arranged.

[0018] The advantages of the utility model are:

[0019] The utility model provides a rear bushing structure for the front lower swing arm. When the structure swings, one end face of the hollow part is provided with two inclined surfaces, and the other end face is a vertical surface. In this way, the first end face and the second end face can be gradually contacted or separated, thereby alleviating the mutual squeezing effect between the rubbers and eliminating the sudden squeezing and separation effect of the traditional structure in which both end faces are vertical surfaces, thereby greatly reducing or eliminating abnormal noises and improving the durability of parts.

[0020] Furthermore, compared with the traditional front lower swing arm rear bushing structure, the utility model has small changes and low costs; no grease needs to be added and no maintenance is required during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a rear bushing structure of a front lower swing arm of the utility model;

[0022] Figure 2 It is a schematic cross-sectional structure diagram of a rear bushing structure of a front lower swing arm of the utility model;

[0023] Figure 3 and Figure 4 It is a structural schematic diagram of the rear bushing structure of the front lower swing arm in the prior art.

[0024] Description of reference numerals:

[0025] 1. Outer steel sleeve; 2. Inner steel sleeve; 3. Solid part; 4. Hollow part; 5. First end face; 6. Second end face; 7. Inclined part; 8. Vertical part; 9. Limiting groove; 10. Recess; 11. Protrusion. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0027] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See attached Figure 1 , Figure 1 The figure is a three-dimensional structural diagram of a rear bushing structure of a front lower swing arm. The rear bushing structure of the front lower swing arm provided in this embodiment includes an outer steel sleeve 1, an inner steel sleeve 2 and a rubber body, and the rubber body is arranged between the outer steel sleeve 1 and the inner steel sleeve 2. The rubber body includes a solid part 3 and a hollow part 4. It can be understood that the hollow part 4 is a hollow structure opened on the rubber body. Two hollow parts 4 are symmetrically arranged on the rubber body along the axial direction.

[0030] See attached Figure 2, the hollow part 4 includes a first end face 5 and a second end face 6 which are arranged opposite to each other, one of which is provided with a sloped portion 7 at both ends along the up-down direction, and the other is a vertical surface along the up-down direction, so that the first end face 5 and the second end face 6 can be gradually contacted or separated. The up-down direction is the axial direction of the rubber body, and the vertical surface is a surface parallel to the axial direction. In this embodiment, the first end face 5 is farther away from the axis of the rubber body than the second end face 6; the first end face 5 is provided with a sloped portion 7 at both ends along the up-down direction, and the second end face 6 is provided as a vertical surface along the up-down direction.

[0031] The two inclined portions 7 are symmetrically arranged relative to the horizontal direction, and the horizontal direction is perpendicular to the up-down direction. There is a vertical portion 8 between the two inclined portions 7, and the vertical portion 8 is parallel to the corresponding vertical plane. The inclined portion 7 is equal in width to the vertical portion 8, that is, a section is made along the radial direction of the rubber body, and the intersection line of the section and the vertical portion 8 is equal in length to the intersection line of the inclined portion 7 and the vertical portion 8. The acute angle α formed by the inclined portion 7 and the up-down direction is less than or equal to 15°. The cross-section of the first end face 5 and the second end face 6 along the radial direction of the rubber body is arc-shaped, that is, a section is made along the radial direction of the rubber body, and the intersection lines of the section and the first end face 5 and the second end face 6 are both arc-shaped lines.

[0032] Optionally, the hollow portion 4 further includes two limiting grooves 9 , and the two limiting grooves 9 are located at two ends of the first end surface 5 and the second end surface 6 .

[0033] The above are the preferred embodiments of the utility model and the technical principles used therein. For those skilled in the art, without departing from the spirit and scope of the utility model, any obvious changes such as equivalent transformation, simple replacement, etc. based on the technical solution of the utility model shall fall within the protection scope of the utility model.

Claims

1. A rear bushing structure of a front lower swing arm, characterized in that: The structure comprises an outer steel sleeve (1), an inner steel sleeve (2) and a rubber body, wherein the rubber body is arranged between the outer steel sleeve (1) and the inner steel sleeve (2); the rubber body comprises a solid part (3) and a hollow part (4); The hollow portion (4) comprises a first end face (5) and a second end face (6) which are arranged opposite to each other, one of the first end face (5) and the second end face (6) being provided with inclined portions (7) at both ends along the up-down direction, and the other being a vertical surface along the up-down direction, so that the first end face (5) and the second end face (6) can be gradually brought into contact or separated.

2. The rear bushing structure of the front lower swing arm according to claim 1, characterized in that: The two inclined surface portions (7) are symmetrically arranged.

3. The rear bushing structure of the front lower swing arm according to claim 2, characterized in that: A vertical portion (8) is located between the two inclined portions (7).

4. The rear bushing structure of the front lower swing arm according to claim 3, characterized in that: The inclined portion (7) and the vertical portion (8) are of equal width.

5. The rear bushing structure of the front lower swing arm according to claim 4, characterized in that: The acute angle formed by the inclined portion (7) and the up-down direction is less than or equal to 15°.

6. The rear bushing structure of the front lower swing arm according to claim 1, characterized in that: The first end surface (5) and the second end surface (6) have arc-shaped cross sections along the radial direction of the rubber body.

7. The rear bushing structure of the front lower swing arm according to claim 1, characterized in that: The hollow portion (4) further comprises two limiting grooves (9), and the two limiting grooves (9) are located at both ends of the first end surface (5) and the second end surface (6).

8. The rear bushing structure of the front lower swing arm according to any one of claims 1 to 7, characterized in that: The first end surface (5) is further away from the axis of the rubber body than the second end surface (6); The first end surface (5) is configured to have inclined surface portions (7) at both ends along the up-down direction, and the second end surface (6) is configured to be a vertical surface along the up-down direction.

9. The rear bushing structure of the front lower swing arm according to claim 8, characterized in that: The rubber body comprises two hollow parts (4).

10. The rear bushing structure of the front lower swing arm according to claim 9, characterized in that: The two hollow parts (4) are symmetrically arranged.

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