CN210211934U

CN210211934U - Trailing arm of rear suspension

Info

Publication number: CN210211934U
Application number: CN201920933519.3U
Authority: CN
Inventors: Jiamin Liu; 刘嘉敏; Haijun Min; 闵海军
Original assignee: Shanghai Huizhong Automotive Manufacturing Co Ltd
Current assignee: Shanghai Huizhong Automotive Manufacturing Co Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-03-31
Anticipated expiration: 2029-06-20

Abstract

The utility model provides a rear suspension trailing arm, which comprises a trailing arm body, a group of first flanges and a group of second flanges, wherein the first flanges are respectively arranged on two side surfaces of the trailing arm body and extend upwards along the side surfaces of the trailing arm body, and one end of the first flange is terminated at the front part of a mounting point of a steering knuckle mounting part on the trailing arm body; the outer edge of one end of the first flanging and the outer edge of the steering knuckle mounting part form a transition area, and the second flanging is arranged in the corresponding transition areas respectively. The utility model discloses rear suspension trailing arm has improved turn-ups transition structure, improves its intensity height, and the technology shaping is simple, has solved turn-ups structure's in the former design stress concentration problem, has improved fatigue life, has satisfied the performance requirement of product.

Description

Trailing arm of rear suspension

Technical Field

The utility model relates to the field of automobiles, in particular to rear suspension trailing arm.

Background

Fig. 1 is a schematic structural diagram of a trailing arm of a rear suspension in the prior art. Fig. 2 is a schematic structural diagram of a flanging transition area in a trailing arm of a rear suspension in the prior art.

As shown in fig. 1 and 2, in the prior art, the rear suspension trailing arm 10 is in the form of a single-piece construction. To increase the structural strength at the mounting point of the trailing arm and the knuckle, a flange 11 is added at the side. Since it is necessary to reserve the space for assembling the bolt and the nut and to avoid the space for enveloping other peripheral components, the flange at the knuckle mounting portion 12 cannot extend completely to the end, and the transition ends near the mounting point. The flange break has low structural strength, is easy to concentrate stress, has reduced fatigue life and is easy to crack from the position.

Fig. 3 is a schematic diagram illustrating the improvement of the weak point of the transition region of the flange in the trailing arm of the rear suspension in the prior art. As shown in fig. 3, the flange transition structure 13 is integrally extended backward within the allowable range of the assembly space and the peripheral envelope space, and the problems of structural weakening and weak points caused by the flange transition are not solved, but move backward together with the flange transition structure. This structure also causes stress concentration and reduces fatigue life, resulting in unsatisfactory performance.

Based on this, the structure of the trailing arm of the rear suspension is further improved by those skilled in the art in order to overcome the above technical problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to cause stress concentration easily for overcoming among the prior art rear suspension trailing arm, reduce defects such as fatigue life, provide a rear suspension trailing arm.

The utility model discloses a solve above-mentioned technical problem through following technical scheme:

the rear suspension trailing arm is characterized by comprising a trailing arm body, a group of first flanges and a group of second flanges, wherein the first flanges are respectively arranged on two side surfaces of the trailing arm body and extend upwards along the side surfaces of the trailing arm body, and one end of each first flange is terminated in front of a mounting point of a steering knuckle mounting part on the trailing arm body;

the outer edge of one end of the first flanging and the outer edge of the steering knuckle mounting part form a transition area, and the second flanging is arranged in the corresponding transition areas respectively.

According to the utility model discloses an embodiment, the second turn-ups is followed first turn-ups one end outward flange with the outward flange of knuckle installation department turns over the book outwards.

According to an embodiment of the invention, the height of the second flange is 2-10 mm.

According to the utility model discloses an embodiment, a plurality of mounting holes have been seted up on the knuckle installation department.

According to the utility model discloses an embodiment, be close to on the first turn-ups second turn-ups department has seted up at least one installation hole site.

According to the utility model discloses an embodiment, the outward flange of second turn-ups is the arc.

According to the utility model discloses an embodiment, the turn-ups of second's turn-ups with the turn-ups of first thickness matches each other.

According to the utility model discloses an embodiment, first turn-ups the trailing arm body with the second turn-ups is integrated into one piece.

According to the utility model discloses an embodiment, be close to on the knuckle installation department the second turn-ups department is provided with the notch.

According to an embodiment of the invention, the inner wall surface of the recess is a circular arc surface.

The utility model discloses an actively advance the effect and lie in:

the utility model discloses rear suspension trailing arm has improved turn-ups transition structure, improves its intensity height, and the technology shaping is simple, has solved turn-ups structure's in the former design stress concentration problem, has improved fatigue life, has satisfied the performance requirement of product.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which like reference numerals refer to like features throughout, and in which:

fig. 1 is a schematic structural diagram of a trailing arm of a rear suspension in the prior art.

Fig. 2 is a schematic structural diagram of a flanging transition area in a trailing arm of a rear suspension in the prior art.

Fig. 3 is a schematic diagram illustrating the improvement of the weak point of the transition region of the flange in the trailing arm of the rear suspension in the prior art.

Fig. 4 is a perspective view of the trailing arm of the rear suspension according to the present invention.

Fig. 5 is an enlarged view of a portion a in fig. 4.

Fig. 6 is a schematic view of the first and second flanges of the trailing arm of the rear suspension according to the present invention.

[ reference numerals ]

Rear suspension trailing arm 10

The side surface is added with a turned-over edge 11

Knuckle mounting portion 12

Flanging transition structure 13

Trailing arm body 20

First turned-over edge 30

Second flange 40

Knuckle mount 50

Mounting hole 51

Mounting hole sites 31

Notch 52

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

Further, although the terms used in the present invention are selected from publicly known and used terms, some of the terms mentioned in the description of the present invention may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.

Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.

Fig. 4 is a perspective view of the trailing arm of the rear suspension according to the present invention. Fig. 5 is an enlarged view of a portion a in fig. 4. Fig. 6 is a schematic view of the first and second flanges of the trailing arm of the rear suspension according to the present invention.

As shown in fig. 4 to 6, the utility model discloses a rear suspension trailing arm, it includes trailing arm body 20, a set of first turn-ups 30 and a set of second turn-ups 40, sets up first turn-ups 30 respectively in the both sides face of trailing arm body 20, upwards extends along the side of trailing arm body 20, and the one end of first turn-ups 30 is ended in the mounting point front portion of knuckle installation department 50 on trailing arm body 20. The outer edge of one end of the first burring 30 and the outer edge of the knuckle mounting portion 50 form a transition region, and the second burring 40 is respectively disposed at the corresponding transition regions.

Preferably, the second flange 40 is folded outwardly along an outer edge of one end of the first flange 30 and an outer edge of the knuckle mounting portion 50. The height of the second flange 40 is preferably 2-10 mm.

Further, a plurality of mounting holes 51 are opened in the knuckle mounting portion 50.

Furthermore, at least one mounting hole 31 is formed on the first flange 30 near the second flange 40. The outer edge of the second flange 40 is preferably curved.

Further, the thickness of the second flange 40 is preferably matched to the thickness of the first flange 30. The first flange 30, trailing arm body 20 and second flange 40 are preferably integrally formed.

Preferably, the knuckle mounting portion 50 is provided with a notch 52 adjacent the second flange 40. The inner wall surface of the notch 52 is a circular arc surface.

According to the structure description, the utility model discloses back suspension trailing arm is in order to solve because turn-ups transition is not in the same direction as, and the mounting point department structural strength who arouses weakens the problem, has redesigned turn-ups transition region. The plane of the mounting hole is reserved, a flanging secondary folding structure is adopted, the height of the secondary flanging is about 2-10mm, the transition between the side flanging and the plane of the mounting point is smooth, and the structural strength from the flanging to the mounting plane is kept in stable transition.

In addition, in order to avoid the interference problem (as shown in fig. 3) that the turn-ups delayed and arouse among the prior art, the utility model discloses rear suspension trailing arm has guaranteed bolt and nut's assembly space and the envelope of peripheral spare part (as shown in fig. 6) when solving weak point problem. The transition structure formed by the second flanging has high strength and simple process forming, solves the problem of stress concentration of the flanging structure in the original design, prolongs the fatigue life and meets the performance requirements of products.

The utility model discloses rear suspension trailing arm design intensity is high, and stamping forming is simple, has improved most monolithic formula trailing arm turn-ups transition weak point's stress concentration's problem in the existing market, has agreed with the cost requirement and the performance requirement of each host computer factory and spare part factory cost reduction increase at present.

Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are all within the scope of the invention.

Claims

1. The rear suspension trailing arm is characterized by comprising a trailing arm body, a group of first flanges and a group of second flanges, wherein the first flanges are respectively arranged on two side surfaces of the trailing arm body and extend upwards along the side surfaces of the trailing arm body, and one end of each first flange is terminated in front of a mounting point of a steering knuckle mounting part on the trailing arm body;

2. The rear suspension trailing arm of claim 1 wherein the second flange is folded outwardly along an outer edge of one end of the first flange and an outer edge of the knuckle mounting portion.

3. The rear suspension trailing arm of claim 1 wherein the second flange has a height of 2-10 mm.

4. The rear suspension trailing arm of claim 1 wherein the knuckle mounting portion defines a plurality of mounting holes.

5. The rear suspension trailing arm of claim 1 wherein the first flange has at least one mounting hole located adjacent the second flange.

6. The rear suspension trailing arm of claim 1 wherein the outer edge of the second flange is arcuate.

7. The rear suspension trailing arm of claim 6 wherein the thickness of the second flange is matched to the thickness of the first flange.

8. The rear suspension trailing arm of claim 1 wherein the first flange, the trailing arm body, and the second flange are integrally formed.

9. The rear suspension trailing arm of claim 1 wherein the knuckle mount has a notch disposed thereon proximate the second flange.

10. The rear suspension trailing arm of claim 9, wherein the inner wall surface of the notch is a circular arc surface.