CN212555734U

CN212555734U - Automobile torsion beam

Info

Publication number: CN212555734U
Application number: CN202021192634.9U
Authority: CN
Inventors: 陈一玮; 倪海华; 张才伟; 闵海军; 束振伟; 王成龙; 殷梅
Original assignee: Shanghai Huizhong Automotive Manufacturing Co Ltd
Current assignee: Shanghai Huizhong Automotive Manufacturing Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-02-19
Anticipated expiration: 2030-06-24

Abstract

The utility model provides an automobile torsion beam, it includes trailing arm, spring disc and crossbeam, the one end of spring disc with the trailing arm overlap joint, the other end with the crossbeam overlap joint makes the spring disc is located the trailing arm with between the crossbeam, just the other end of spring disc with crossbeam lapped head is located on the up end of crossbeam. The utility model discloses can effectively reduce spring holder and crossbeam welded head local stress concentration, avoid in head fracture problem, the effectual improvement twists reverse fatigue life, has satisfied the performance requirement to through experimental verification. The automobile torsion beam solves the problem of fatigue by the local design of the spring disc under the condition of keeping the main structure of the original design, has simple structure and convenient manufacture, and well meets the safety requirement and the cost requirement of economic automobile models.

Description

Automobile torsion beam

Technical Field

The utility model relates to a car torsion beam field, in particular to car torsion beam.

Background

In the field of automobiles, a rear torsion beam is a chassis part commonly used in SUVs and MPVs, and has the characteristics of simple structure and high bearing capacity. The vertical jumping of the left wheel and the right wheel is balanced through the self torsion, so that the shaking of the vehicle is reduced, and the stability of the vehicle is kept. The rear torsion beam is used as a main bearing piece, and the fatigue life is a key index of the product design.

Fig. 1 is a schematic view of a connection structure of a spring holder, a trailing arm and a cross beam in an automobile torsion beam in the prior art.

As shown in fig. 1, the torsion beam for an automobile includes a trailing arm 10, a spring holder 20, and a cross member 30. In the conventional rear torsion beam part, the crack is found at the welding edge of the spring plate 20 and the cross beam 30 (shown as a region a in fig. 1) due to the road fatigue caused by the increased load. Through failure analysis and CAE analysis, the local stress concentration of the welded head part of the spring disc 20 and the cross beam 30 is found under the torsional working condition, and the performance requirements cannot be met.

In view of the above, those skilled in the art have developed the structure of a torsion beam for an automobile in order to overcome the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an automobile torsion beam in order to overcome among the prior art spring dish and crossbeam welded head local stress concentration, can't satisfy defects such as performance requirement.

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

the utility model provides an automobile torsion beam, its characterized in that, automobile torsion beam includes trailing arm, spring dish and crossbeam, the one end of spring dish with the trailing arm overlap joint, the other end with the crossbeam overlap joint makes the spring dish be located the trailing arm with between the crossbeam, just the other end of spring dish with crossbeam lapped head is located on the up end of crossbeam.

According to an embodiment of the present invention, the other end of the spring plate and the head of the beam lap joint are adjacent to each other and a first included angle is formed between the outer edge of the spring plate and the direction along the line.

According to an embodiment of the invention, said first angle is 20 ° -40 °.

According to an embodiment of the invention, the outer edge of the spring disc is provided with an outwardly extending flange.

According to an embodiment of the invention, the distance between the flange of the spring holder and the head is 20-40 mm.

According to an embodiment of the present invention, the other end of the spring plate and the head of the cross beam overlap joint, and the upper end face of the cross beam therebetween is a second included angle.

According to an embodiment of the invention, said second angle is 20 ° -40 °.

According to an embodiment of the present invention, the head is formed by extending the other end of the spring plate outward, and is fitted to the upper end surface of the cross beam.

According to an embodiment of the present invention, the head and the cross beam adopt welded connection.

According to an embodiment of the present invention, the head and the spring holder are close to the arc transition between the sides of the beam.

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

the utility model discloses car torsion beam can effectively reduce spring disc and crossbeam welded head local stress concentration, has avoided at head fracture problem, the effectual torsional fatigue life that has improved has satisfied the performance requirement to through experimental verification.

The automobile torsion beam solves the problem of fatigue by the local design of the spring disc under the condition of keeping the main structure of the original design, has simple structure and convenient manufacture, and well meets the safety requirement and the cost requirement of economic automobile models.

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. 2 is a schematic structural diagram of the automobile torsion beam of the present invention.

Fig. 3 is a schematic structural diagram of the automobile torsion beam of the present invention.

Fig. 4 is a third schematic structural view of the torsion beam of the present invention.

[ reference numerals ]

Trailing

arms

10, 100

Spring holder 20, 200

Cross member

30, 300

Head 210

First included angle A

Flanging 220

Distance B between turned edge and head of spring disc

Second included angle C

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.

As shown in fig. 2 to 4, the utility model discloses an automobile torsion beam, it includes trailing arm 100, spring holder 200 and crossbeam 300, with the one end and the trailing arm 100 overlap joint of spring holder 200, the other end and crossbeam 300 overlap joint for spring holder 200 is located between trailing arm 100 and crossbeam 300, and the other end of spring holder 200 is located the up end of crossbeam 300 with the lapped head of crossbeam 300.

Preferably, the head 210 of the other end of the spring plate 200 overlapping the beam 300 forms a first included angle a with the outer edge of the adjacent spring plate 200 along the line direction, that is, as shown in fig. 3, the head 210 of the other end of the spring plate 200 overlapping the beam 300 forms a first included angle a with the X direction.

Here, the first angle a is preferably 20 ° to 40 °.

Further, the outer edge of the spring holder 200 is provided with outwardly extending flanges 220. The distance B of the flange 220 of the spring holder 200 from the head 210 is preferably 20-40 mm.

Furthermore, a second included angle C is formed between the head 210 overlapping the other end of the spring holder 200 and the beam 300 and the upper end surface of the beam 300, that is, as shown in fig. 4, the head 210 overlapping the other end of the spring holder 200 and the beam 300 forms a second included angle C with the Y direction.

Here, the second angle C is preferably 20 ° to 40 °.

In addition, the head portion 210 is preferably formed to extend outwardly along the other end of the spring holder 200 to be in abutment with the upper end surface of the cross beam 300. The head 210 and the beam 300 are preferably connected by welding.

Furthermore, the head 210 transitions in a circular arc with the side of the spring holder 200 adjacent the beam 300.

According to the structure description, the utility model discloses car torsion beam can reduce spring dish and crossbeam welded head local stress concentration through the setting of above-mentioned a series of structures.

To sum up, the utility model discloses car torsion beam can effectively reduce spring disc and crossbeam welded head local stress concentration, has avoided at head fracture problem, and the effectual improvement twists reverse fatigue life, has satisfied the performance requirement to pass through experimental verification.

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 utility model provides an automobile torsion beam, its characterized in that, automobile torsion beam includes trailing arm, spring dish and crossbeam, the one end of spring dish with the trailing arm overlap joint, the other end with the crossbeam overlap joint makes the spring dish be located the trailing arm with between the crossbeam, just the other end of spring dish with crossbeam lapped head is located on the up end of crossbeam.

2. The automotive twist beam defined in claim 1, wherein the other end of said spring disc overlaps said cross beam at a head portion thereof which is at a first angle to the outer edge of said adjacent spring disc in a linear direction.

3. An automotive twist beam according to claim 2, characterized in that said first included angle is 20 ° -40 °.

4. An automotive twist beam according to claim 1, characterized in that the outer edges of said spring disc are provided with outwardly extending flanges.

5. An automotive twist beam according to claim 4, characterized in that the distance between the flange of said spring disc and said head portion is 20-40 mm.

6. The automotive twist beam defined in claim 1, wherein the other end of said spring disc has a second included angle with the upper end surface of said beam at the head portion thereof that overlaps said beam.

7. An automotive twist beam according to claim 6, characterized in that said second included angle is 20 ° -40 °.

8. The automotive twist beam defined in claim 1, wherein said head portion is formed to extend outwardly along the other end of said spring disc to engage an upper end surface of said cross member.

9. An automotive twist beam according to claim 8, characterized in that said head portion is joined to said cross member by welding.

10. An automotive twist beam according to claim 1, characterized in that said head portion is in circular arc transition with a side edge of said spring disc adjacent said cross beam.