CN214564431U - Rear buffer block assembly of automobile independent suspension and automobile - Google Patents

Abstract

This scheme relates to a back buffer block assembly and car that provides an automobile independent suspension, adjusts to plastics by metal material through the manufacturing material with the buffer block base, inserts in the while cancellation, optimizes the connected mode of buffer block base and buffer block body, finally reaches the problem that can effectively prevent the buffer block body and appear the fracture by the cutting of buffer block base in work. This independent suspension's of car rear cushion block assembly includes: the buffer block body and the buffer block base; a first assembling hole is formed in the end face, facing the buffer block body, of the buffer block base, and a boss is formed on the hole wall of the first assembling hole in the direction close to the center line of the first assembling hole; the joints of the surfaces of the bosses are in arc transition; the buffer block body is pressed into a first assembling hole of the buffer block base, and is abutted against the boss in the first assembling hole.

Description

Rear buffer block assembly of automobile independent suspension and automobile

Technical Field

The utility model relates to an automobile chassis field, concretely relates to automobile independent suspension's back buffer block assembly and car.

Background

With the development of economy and the improvement of living standard of people, automobiles become necessary transportation tools for people to go out. However, with higher and higher performance requirements of NVH, stability, and the like of automobiles, more and more passenger cars adopt independent suspension structures.

The rear buffer block assembly is an important component of an independent suspension structure and has great influence on the driving smoothness and the operating stability of the automobile. The shock-absorbing element is used as a shock-absorbing element of an automobile suspension system and is used for limiting the maximum jump height of wheels, preventing the spring doubling and the shock absorber from being impacted and improving the safety of the whole automobile; the linear characteristic of a suspension system is changed, the riding comfort is improved, and the vibration of a vehicle body is attenuated by the auxiliary shock absorber in a compression stroke; a product for reducing collision noise and increasing the bearing capacity of an auxiliary spring has sufficient strength and life.

The structure of a traditional suspension rear bumper assembly is shown in fig. 1, and the suspension rear bumper assembly is composed of four parts, namely a bolt 1, an inner insert 2, a bumper base 3 and a bumper body 4. Insert 2 imbeds in the buffer block base 3 with buffer block body 4 after the buffer block body 4, with bolt 1 with the buffer block assembly and automobile body coupling after at last, buffer block body 4 is used for mitigateing the impact that comes from the road surface.

In the traditional scheme, the buffer block base 3 is formed by stamping a metal sheet metal part (such as SAPH 370), and the thickness of a metal material reaches 2.5 mm; the inner insert 2 is made of POM materials, is filled in the buffer block body 4, enables the root diameter of the inner insert to be enlarged, and then is pressed into the buffer block base 3 to generate a certain interference with the buffer block base 3 to prevent the inner insert from being separated from the buffer block base 3. The buffer block body 4 is then made of NDI or MDI material, which is produced by compression. When the buffer block body 4 is in the course of work, buffer block base 3 produces great elastic deformation (specifically, the diameter grow of buffer block base 3, and overall height shortens, is equivalent to buffer block base 3 and is out of shape by the state of "thin and long" for the state of "squat") because of the pressurized inflation in the diameter direction, and this can lead to the side edge of buffer block body 4 to contact gradually and buffer block base 3's edge 31 and is cut by the edge of buffer block base 3. In the reliability road test, the fault phenomenon that the buffer block body 4 is cracked often occurs due to the cutting of the buffer block base 3 to the buffer block body 4.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a back buffer block assembly and car of independent suspension of car is adjusted to plastics by metal material through the manufacturing material with the buffer block base, inserts in the while cancellation optimizes the connected mode of buffer block base and buffer block body, finally reaches and can effectively prevent that the buffer block body from being cut by the buffer block base and the problem that the fracture appears in work.

The technical scheme of the utility model is that:

the embodiment of the utility model provides a back buffer block assembly of independent suspension of car, include: the buffer block body and the buffer block base; a first assembling hole is formed in the end face, facing the buffer block body, of the buffer block base, and a boss is formed on the hole wall of the first assembling hole in the direction close to the center line of the first assembling hole; the joints of the surfaces of the bosses are in arc transition; the buffer block body is pressed into a first assembling hole of the buffer block base, and is abutted against the boss in the first assembling hole.

Preferably, a first outer surface and a second outer surface of the buffer block base are in arc transition connection, the first outer surface is a surface, facing the buffer block body, of the buffer block base, and the second outer surface is a longitudinal surface adjacent to the first outer surface.

Preferably, a second assembly hole is formed in the end face, far away from the buffer block body, of one side of the buffer block base, and the buffer block base is fixed to the vehicle body through an installation bolt in the second assembly hole.

Preferably, the base of the buffer block is formed by injection molding of a plastic piece.

Preferably, a metal sleeve is assembled in the second assembling hole of the buffer block base, and the mounting bolt penetrates through the metal sleeve and then is connected with the vehicle body.

The embodiment of the utility model provides a still provide an automobile, including foretell automobile independent suspension's back buffer block assembly.

Compared with the prior art, the utility model has the characteristics that:

the utility model discloses two parts are optimized: firstly, the traditional buffer block base is changed into a buffer block base with a new structure, and the buffer block base is formed by injection molding of plastic materials; secondly, redesign back buffer block base to have the joint structure that prevents the buffer block body and drop, consequently cancelled interior inserts. Meanwhile, a metal sleeve for mounting the rear buffer block assembly and the vehicle body is additionally arranged, and the connection rigidity of the rear buffer block assembly and the vehicle body is increased. When the rear buffer block assembly works, the condition that the buffer block body is cut by the buffer block base can be effectively avoided.

Generally speaking, this utility model structure is simple, reliable, and production technology is feasible, can dismantle, maintainability is strong.

Drawings

FIG. 1 is a diagram of a rear bumper assembly in the prior art;

FIG. 2 is a diagram showing the structure of the rear bumper assembly in the present embodiment;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

description of reference numerals: 1-mounting a bolt; 2-metal sleeve; 3-a buffer block base; 4-a buffer block body; 31-a boss; 311-a first surface; 312 — a second surface; 313-a third surface; 301-a first assembly hole; 302-a second assembly hole; 32-a first outer surface; 33-second outer surface.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Referring to fig. 2 and 3, the present embodiment provides a rear bumper assembly of an independent suspension of an automobile, including: the mounting bolt 1, metal sleeve 2, buffer block base 3 and buffer block body 4. The buffer block base 3 has been seted up first pilot hole 301 towards a side end face of buffer block body 4, and the buffer block base 3 is kept away from another side end face of this buffer block body 4 and has been seted up second pilot hole 302, and the central line of first pilot hole 301 and the central line collineation of second pilot hole 302.

In this embodiment, in order to solve the cutting problem of buffer block base 3 to buffer block body 4. Firstly, the structure of the bumper base 3 is improved, as shown in fig. 3, in the present embodiment, a boss 31 is protrudingly provided on the inner wall of the first assembly hole 301 along the direction close to the center line of the first assembly hole 301, and the joints of the surfaces of the boss 31 are in circular arc transition. The buffer block body 4 is still pressed into the first fitting hole 301 by press fitting, and the buffer block body 4 is prevented from falling off therefrom by the provision of the boss 31. Because the surface joints of the boss 31 (as shown in fig. 3, the first surface 311 and the second surface 312 of the boss 31 are in arc transition connection, and the second surface 312 and the third surface 313 of the boss 31 are in arc transition connection) all adopt arc transition, the contact part between the boss 31 and the buffer block body 4 has no sharp corner which can cut the buffer block body 4. Therefore, when the buffer block body 4 works, the buffer block base 3 cannot cut the buffer block body 4 to cause cracking of the buffer block body.

In addition, in this embodiment, the first outer surface 32 and the second outer surface 33 of the buffer block base 3 are arc-connected, the first outer surface 32 is a surface of the buffer block base 3 facing the buffer block body 4, and the second outer surface 33 is a longitudinal surface adjacent to the first outer surface 32. Thus, even if the bump stop body 4 is deformed during operation, there is no sharp corner where the first outer surface 32 and the second outer surface 33 are joined to cut the bump stop body 4.

In this embodiment, the first outer surface 32 is flush with the third surface 313 of the boss 31. Of course, the first outer surface 32 and the third surface 313 of the boss 31 may be disposed non-flush, and in this case, in order to prevent the cutting of the buffer block body 4, the connection between the first outer surface 32 and the third surface 313 needs to be disposed in a circular arc transitional connection manner.

In this embodiment, the effect of buffer block base 3 is fixed buffer block body 4, prevents that buffer block body 4 from droing, restricts buffer block body 4's deformation again simultaneously.

Further, in order to reduce the weight and manufacturing cost of the cushion block base 3. The material for manufacturing the buffer block base 3 in this embodiment is a plastic material of PP + GF 0.

When assembling the rear buffer block assembly in the embodiment, the metal sleeve 2 is pressed into the buffer block base 3, then the mounting bolt 1 is put into, and the buffer block body 4 is pressed into the buffer block base 3 at last, so that the buffer block body 4 and the buffer block base 3 form interference fit, and the boss 31 of the buffer block base 3 is clamped with the buffer block body 4 to prevent the buffer block body from falling off.

In addition, the mounting bolt 1 and the metal sleeve 2 are used for effectively mounting and fixing the rear bumper block assembly on the vehicle body, and the reliable connection between the rear bumper block assembly and the vehicle body is ensured. Specifically, the metal sleeve 2 is fitted into the second fitting hole 302, and the mounting bolt 1 is then fixedly connected to the vehicle body through the metal sleeve 2. Because the manufacturing material of this buffer block base 3 in this embodiment is plastics, if the car body that directly makes buffer block base 3 and the metal that will plastics support through the bolt assembles together, the risk that the working of plastics appears breaking because of can't bear bolt tightening moment after long-time use. After the metal sleeve 2 is added, the bolt tightening torque is borne by the metal sleeve 2, and the problem of breakage of the buffer block base 3 can be avoided.

The aforesaid back buffer block assembly of this embodiment is adjusted to non-metallic material (specifically for plastics in this embodiment) by metal material through the manufacturing material with buffer block base 3, cancels current interior inserts simultaneously, optimizes buffer block base 3 and buffer block body 4's connected mode, finally reaches and can effectively prevent buffer block body 4 and is cut by buffer block base 3 in the work and the problem of fracture appears.

The embodiment also provides an automobile comprising the rear buffer block assembly of the automobile independent suspension.

The foregoing embodiments have described only some of the one or more embodiments of the present invention, but it will be appreciated by those skilled in the art that the invention can be embodied in many other forms without departing from the spirit or scope of the invention. Accordingly, the present examples and embodiments are to be considered as illustrative and not restrictive, and various modifications and substitutions may be made thereto without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

1. A rear bumper assembly of an automotive independent suspension, comprising: the buffer block comprises a buffer block body (4) and a buffer block base (3); a first assembling hole (301) is formed in one side end face, facing the buffer block body (4), of the buffer block base (3), and a boss (31) is formed on the hole wall of the first assembling hole (301) in the direction close to the center line of the first assembling hole (301); the joints of the surfaces of the bosses (31) are in arc transition;

the buffer block body (4) is partially pressed into a first assembly hole (301) of the buffer block base (3), and is abutted against the boss (31) in the first assembly hole (301).

2. The rear bump stop assembly of claim 1 wherein the first outer surface (32) and the second outer surface (33) of the bump stop base (3) are radiused and transition, the first outer surface (32) being the surface of the bump stop base (3) facing the bump stop body (4) and the second outer surface (33) being the longitudinal surface adjacent to the first outer surface (32).

3. The rear bumper assembly as claimed in claim 1, wherein a second assembling hole (302) is formed in an end surface of the bumper base (3) away from the bumper body (4), and the bumper base (3) is fixed to the vehicle body by a mounting bolt (1) assembled into the second assembling hole (302).

4. The rear bumper assembly according to claim 3, wherein the bumper base (3) is formed by injection molding of plastic.

5. The rear bumper assembly according to claim 4, wherein a metal sleeve (2) is fitted in the second fitting hole (302) of the bumper base (3), and the mounting bolt (1) is connected to the vehicle body after passing through the metal sleeve (2).

6. An automobile comprising the rear bump stop assembly of an independent suspension of an automobile according to any one of claims 1 to 5.

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