CN213566118U

CN213566118U - Rear torsion beam assembly

Info

Publication number: CN213566118U
Application number: CN202022801264.0U
Authority: CN
Inventors: 贾培; 王浩州; 熊恩林
Original assignee: Chongqing Jinkang Sailisi New Energy Automobile Design Institute Co Ltd
Current assignee: Chongqing Jinkang Sailisi New Energy Automobile Design Institute Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-06-29
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a back torsion beam assembly, including left longeron, right longeron and torsion beam crossbeam, the both ends of torsion beam crossbeam are connected with left longeron and right longeron respectively, the torsion beam crossbeam is the tubular structure, and the section is the V font, follows the tip of torsion beam crossbeam is provided with the angle change control point of the inboard angle of opening of a plurality of control V fonts to in the middle of to length direction, so that the opening of V font forms the angle change structure by the grow that diminishes greatly again, and the V font outside of torsion beam crossbeam is adjacent between the angle change control point, form the even change section by wide narrowing by the tip to the centre. The beneficial effects of the utility model are that, through setting back torsion beam crossbeam to closed V font variable angle structure, improve torsional rigidity and flexural rigidity.

Description

Rear torsion beam assembly

Technical Field

The utility model relates to an automobile parts structure, especially a back torsion beam assembly.

Background

At present, when the rear torsion beam is designed, an open type beam structure is usually adopted for facilitating process and product consistency, the structure is complex and poor in consistency, and a V-shaped beam structure is generally adopted; this not only increases the yield strength of the sheet material, which increases the cost, but also the subsequent fatigue cracking problem is more likely to occur. Although a closed cross beam is adopted, the structure is simplified to the maximum extent, the cross beam needs to meet various performance requirements simultaneously due to the fact that the structure is simplified, and the simple V-shaped concave closed structure cannot meet various performance requirements simultaneously.

Disclosure of Invention

The utility model aims at providing a torsion rigidity and bending rigidity that back torsion beam assembly promoted torsion beam crossbeam to the simple V font indent enclosed construction of torsion beam crossbeam can not satisfy the requirement of torsion rigidity and bending rigidity simultaneously among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

The utility model provides a back torsion beam assembly, includes left longeron, right longeron and torsion beam crossbeam, the both ends of torsion beam crossbeam are connected with left longeron and right longeron respectively, the torsion beam crossbeam is tubular structure, and the section is the V font, follows the tip of torsion beam crossbeam is middle to length direction, is provided with the angle change control point of the inboard angle of opening of a plurality of control V fonts to the opening that makes the V font forms the angle change structure by big grow again that diminishes, and the V font outside of torsion beam crossbeam is adjacent between the angle change control point, by the tip to the middle even change section that is formed by the width and narrows down.

Adopt aforementioned technical scheme the utility model discloses, through setting the torsion beam crossbeam to closed V font variable angle structure, follow its length direction center is played to the one end of torsion beam crossbeam, is provided with the inboard angle change control point of V font that a plurality of angles become again by diminishing greatly to torsion beam crossbeam V font outside between the inboard angle change control point of torsion beam crossbeam is provided with the even section that changes. Through the two torsion beam cross beam angle designs, the torsion rigidity and the bending rigidity are improved, and meanwhile, the self-adaptive change of the torsion rigidity is realized in the torsion process of the torsion beam, so that the control stability of the chassis is more similar to that of an independent suspension.

Preferably, the V-shaped inner angle change control points from one end of the torsion beam cross beam connected with the right longitudinal beam to the other end sequentially comprise a first angle change control point, a second angle change control point and a third angle change control point; the V-shaped outer side of the torsion beam cross beam positioned between the first angle change control point and the second angle change control point forms an outer first uniform change section; and the V-shaped outer side between the second angle change control point and the third angle change control point forms an outer side second uniform change section. The angle change control points are arranged on the inner side of the V shape of the torsion beam cross beam, and two sections of uniform change sections are arranged on the outer side of the V shape of the torsion beam cross beam, so that the torsion rigidity and the bending rigidity of the torsion beam cross beam are improved, and meanwhile, the self-adaptive change of the torsion rigidity is realized in the torsion process of the torsion beam.

Preferably, the angle of the first angle change control point is 120-140 degrees, and the first angle change control point is located at a position which is 0.075-0.175 times of the total length of the torsion beam cross beam away from the corresponding end of the torsion beam cross beam; the angle of the second angle change control point is 35-45 degrees and is positioned at a position which is 0.2-0.3 times of the total length of the torsion beam cross beam away from the corresponding end part of the torsion beam cross beam; the angle of the third angle change control point is 40-50 degrees and is located at a position which is 0.45-0.55 times of the total length of the torsion beam cross beam away from the corresponding end part of the torsion beam cross beam. The angle change control points in the range are arranged at the positions of the V-shaped inner side of the torsion beam cross beam in the certain range, so that a proper numerical value point can be selected according to a specific use environment.

Preferably, the first outer uniform changing section is inclined at an angle of 11 degrees with respect to a plane of a center of symmetry of the V-shape in the torsion beam cross beam, and the second outer uniform changing section is inclined at an angle of 3 degrees with respect to a plane of a center of symmetry of the V-shape in the torsion beam cross beam. The torsion rigidity and the bending rigidity of the cross beam are improved by arranging the uniform change section of the angle at the outer side of the torsion beam cross beam, and the adaptability of the torsion beam cross beam to the torsion rigidity in the rotation process is improved.

Further preferably, the rear torsion beam cross member has the same circumference in all cross sections in the length direction. The closed V-shaped rear torsion beam cross beam adopts the design of equal section perimeter, so that the cross beam can provide enough static rigidity and modal requirements, the NVH performance requirements of the cross beam are ensured, the overall NVH performance of the rear suspension is optimized, and the contribution is made to the NVH of the whole vehicle.

Preferably, the end surfaces of the left longitudinal beam and the right longitudinal beam are provided with bushings connected with the left longitudinal beam and the right longitudinal beam. All set up the bush through the terminal surface at left longeron and right longeron, be favorable to being connected with the automobile body through the bush.

Preferably, the spring trays are arranged on the side, connected with the torsion beam cross beam, of each of the left longitudinal beam and the right longitudinal beam and connected with the torsion beam cross beam through the lapping surfaces. The connecting rigidity between the spring tray and the torsion beam cross beam is enhanced by arranging the lapping surface.

The beneficial effects of the utility model are that, through setting the torsion beam crossbeam to closed V font variable angle structure, be provided with in torsion beam crossbeam inboard, first angle change control point, second angle change control point and third angle change control point to be provided with the first even change section in the outside and the even change section of outside second in the torsion beam crossbeam outside. Through the two torsion beam cross beam angle designs, the torsion rigidity and the bending rigidity are improved, and meanwhile, the self-adaptive change of the torsion rigidity is realized in the torsion process of the torsion beam, so that the control stability of the chassis is more similar to that of an independent suspension. The closed V-shaped rear torsion beam cross beam is designed with the same section perimeter, so that the torsion beam cross beam can provide enough static rigidity and modal requirements, the NVH performance requirements of the torsion beam cross beam are guaranteed, the overall NVH performance of the rear suspension is optimized, and the contribution is made to the NVH of the whole vehicle.

Drawings

Fig. 1 is a structural view of a rear torsion beam assembly of the present invention;

fig. 2 is a structural view of a rear torsion beam cross member of the present invention;

fig. 3 is a cross-sectional view B-B of fig. 2 according to the present invention;

fig. 4 is a cross-sectional view a-a of fig. 2 of the present invention;

fig. 5 is a cross-sectional view of fig. 2C-C according to the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, which are not intended to limit the scope of the embodiments described herein.

Reference numerals in the drawings of the specification include: the angle change control device comprises a left longitudinal beam 1, a right longitudinal beam 2, a bushing 3, a spring tray 4, a torsion beam cross beam 5, a first angle change control point 51, a second angle change control point 52, a third angle change control point 53, an angle alpha, an angle beta and an angle gamma.

Referring to fig. 1 and 2, a rear torsion beam assembly includes a left longitudinal beam 1, a right longitudinal beam 2 and a torsion beam cross beam 5, two ends of the torsion beam cross beam 5 are respectively connected with the left longitudinal beam 1 and the right longitudinal beam 2, the torsion beam cross beam 5 is of a tubular structure, and has a V-shaped cross section, a plurality of angle change control points for controlling the inside angle of the V-shaped cross beam 5 are arranged from the end to the middle of the length direction, so that the opening of the V-shaped cross beam forms a variable angle structure which becomes larger from large to small, and the outside of the V-shaped cross beam 5 is located between the adjacent angle change control points, and a uniform change section which becomes smaller from width is formed from the end to the middle.

Referring to fig. 2 to 5, the torsion beam cross member 5 includes, in order from the end portion to the middle changing point, a first angle change control point 51, a second angle change control point 52, and a third angle change control point 53; the V-shaped outer side between the first angle change control point 51 and the second angle change control point 52 forms an outer first uniform change section; the outside of the V-shape between the second angle change control point 52 and the third angle change control point 53 constitutes an outside second uniform change section. The angle alpha of the first angle change control point 51 is 120-140 degrees and is located at a position which is 0.075-0.175 times the total length of the torsion beam cross beam 5 away from the corresponding end of the torsion beam cross beam 5; the angle beta of the second angle change control point 52 is 35-45 degrees and is positioned at a position which is 0.2-0.3 times the total length of the torsion beam cross beam 5 from the corresponding end part of the torsion beam cross beam 5; the angle gamma of the third angle change control point (53) is 40-50 degrees and is positioned at a position which is 0.45-0.55 times the total length of the torsion beam cross beam 5 from the corresponding end part of the torsion beam cross beam 5. The first uniform change section on the outer side of the torsion beam cross beam and the symmetrical center plane of the V shape in the torsion beam cross beam 5 are inclined by an angle of 11 degrees, and the second uniform change section on the outer side and the symmetrical center plane of the V shape in the torsion beam cross beam 5 are inclined by an angle of 3 degrees.

Referring to fig. 1 and 2, the torsion beam cross member 5 has the same circumference in all cross sections in the length direction. The closed V-shaped rear torsion beam cross beam 5 adopts the design of equal section perimeter, so that the cross beam can provide enough static rigidity and modal requirements, the NVH performance requirements of the cross beam are ensured, the overall NVH performance of the rear suspension is optimized, and the contribution is made to the NVH of the whole vehicle. The end surfaces of the left longitudinal beam 1 and the right longitudinal beam 2 are provided with bushings 3 connected with the left longitudinal beam 1 and the right longitudinal beam. One side that left longeron 1 and right longeron 2 are connected with torsion beam crossbeam 5 all is provided with spring tray 4, spring tray 4 is connected with torsion beam crossbeam 5 through the faying surface.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a back torsion beam assembly, includes left longeron (1), right longeron (2) and torsion beam crossbeam (5), the both ends of torsion beam crossbeam (5) are connected with left longeron (1) and right longeron (2) respectively, its characterized in that, torsion beam crossbeam (5) are the tubular structure, and the cross section is the V font, from the tip of torsion beam crossbeam (5) to length direction centre, are provided with the angle change control point of the inboard angle of a plurality of control V fonts to make the opening of V font form by the variable angle structure that diminishes again grow, and the V font outside of torsion beam crossbeam (5) is adjacent between the angle change control point, form by the tip to the centre by the width evenly change section that narrows down.

2. The rear torsion beam assembly according to claim 1, wherein the torsion beam cross member (5) includes, in order from an end portion to a middle portion, a first angle change control point (51), a second angle change control point (52), and a third angle change control point (53); the V-shaped outer side between the first angle change control point (51) and the second angle change control point (52) forms an outer first uniform change section; and the V-shaped outer side between the second angle change control point (52) and the third angle change control point (53) forms an outer second uniform change section.

3. The rear torsion beam assembly according to claim 2, wherein the first angle change control point (51) has an angle α of 120 ° to 140 ° and is located 0.075 to 0.175 times an overall length of the torsion beam cross member (5) from a corresponding end of the torsion beam cross member (5); the angle beta of the second angle change control point (52) is 35-45 degrees and is positioned at a position which is 0.2-0.3 times of the total length of the torsion beam cross beam (5) from the corresponding end part of the torsion beam cross beam (5); the angle gamma of the third angle change control point (53) is 40-50 degrees and is positioned at a position which is 0.45-0.55 times of the total length of the torsion beam cross beam (5) from the corresponding end part of the torsion beam cross beam (5).

4. The rear torsion beam assembly according to claim 3, wherein the first outer uniform variation section is inclined at an angle of 11 ° with respect to a plane of a center of symmetry of a V-shape in the torsion beam cross member (5), and the second outer uniform variation section is inclined at an angle of 3 ° with respect to a plane of a center of symmetry of a V-shape in the torsion beam cross member (5).

5. The rear torsion beam assembly according to any one of claims 1 to 4, wherein the rear torsion beam cross member (5) has the same circumference in all cross sections in the length direction.

6. Rear torsion beam assembly according to any one of claims 1 to 4, wherein the end faces of the left longitudinal beam (1) and the right longitudinal beam (2) are provided with bushings (3) connected thereto.

7. The rear torsion beam assembly according to any one of claims 1 to 4, wherein a spring tray (4) is arranged on each side of the left longitudinal beam (1) and the right longitudinal beam (2) connected with the torsion beam cross beam (5), and the spring tray (4) is connected with the torsion beam cross beam (5) through a lap joint surface.