CN210116347U - Closed crossbeam - Google Patents

Abstract

The utility model discloses a closed type crossbeam, which mainly comprises a crossbeam, a longitudinal arm and a spring disc, wherein the longitudinal arm is fixed at the left end and the right end of the crossbeam by welding, and the spring disc is fixed at the rear end of the crossbeam and is close to the welding position of the crossbeam and the longitudinal arm; the cross beam is a pipe fitting with a cross section of a closed annular structure, the center of a gap between the closed rings is narrow, the two sides of the gap are wide, and the center gap of the closed rings is gradually enlarged from the middle of the cross beam to the left side and the right side until the outermost side is connected with the trailing arm. The utility model has the advantages that: simple structure is compact, and reasonable in design is favorable to improving torsion beam torsional rigidity and first-order mode, reduces local stress and improves intensity, realizes same design objective the utility model discloses can adopt thinner material to realize the lightweight design through the rational arrangement of structure.

Description

Closed crossbeam

Technical Field

The utility model relates to an automobile parts's field, concretely relates to closed crossbeam.

Background

The existing automobile beam structure has the following defects:

1. the structural design of the beam is complex and heavy;

2. most of the torsion beams adopt a V-shaped cross beam and are formed by pressing a plate into a V shape, so that the overall first-order torsion performance of the torsion beam is low, and the first-order mode is also low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide a closed crossbeam.

The purpose of the utility model is accomplished through following technical scheme: the closed type cross beam mainly comprises a cross beam, longitudinal arms and a spring disc, wherein the longitudinal arms are fixedly arranged at the left end and the right end of the cross beam through welding, and the spring disc is fixed at the rear end of the cross beam and close to the welding position of the cross beam and the longitudinal arms; the cross beam is a pipe fitting with a cross section of a closed annular structure, the center of a gap between the closed rings is narrow, the two sides of the gap are wide, and the center gap of the closed rings is gradually enlarged from the middle of the cross beam to the left side and the right side until the outermost side is connected with the trailing arm.

Furthermore, the joints of the two ends of the cross beam and the longitudinal arms are provided with round or oval openings, and the shapes of the openings are matched with the shapes of the joints of the longitudinal arms and the closed ring of the cross beam.

Further, the cross-beam presents a stacked micro-arch shape from left to right.

The utility model has the advantages that: the torsion beam design device is simple and compact in structure and reasonable in design, is beneficial to improving the torsional rigidity and the first-order mode of the torsion beam, reducing local stress and improving strength, can adopt thinner materials to realize the same design purpose, and realizes light-weight design through reasonable layout of the structure.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a central cross-sectional view of the cross beam.

Fig. 3 is a cross-sectional view of two sides of a beam.

Fig. 4 is a bottom view of the cross beam.

Description of reference numerals: crossbeam 1, trailing arm 2, spring holder 3, opening 101, the central gap h of closed ring.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

example (b): as shown in the attached drawings, the closed type cross beam mainly comprises a cross beam 1, longitudinal arms 2 and a spring disc 3, wherein the longitudinal arms 2 are fixedly arranged at the left end and the right end of the cross beam 1 through welding, and the spring disc 3 is fixedly arranged at the rear end of the cross beam 1 and is close to the welding position of the cross beam 1 and the longitudinal arms 2; the cross beam 1 is a pipe fitting with a cross section of a closed annular structure, the center of a gap between closed rings is narrow, the two sides of the gap between the closed rings are wide, the center gap h of the closed rings is gradually enlarged from the middle of the cross beam 1 to the left side and the right side of the cross beam until the outermost side of the gap is connected with the trailing arm 2, and the minimum value of h is 0-2 mm (compared with a traditional V-shaped cross beam, the closed cross beam can greatly improve the torsional rigidity and the first-order torsional mode of the torsion beam and reduce the maximum stress on the torsion beam under dangerous working conditions, so that the thickness of the cross beam can be reduced by achieving the same performance, the quality of the whole torsion beam is reduced, the requirement can be met by realizing light-weight design or adopting low-performance materials, the cost is greatly saved, the value of h can be adjusted according to the required rigidity.

Preferably, circular or oval gaps 101 are formed at the connection positions of the two ends of the cross beam 1 and the longitudinal arms 2, the shape of each gap 101 is matched with the shape of the connection position of the longitudinal arms 2 and the shape of the closed ring of the cross beam 1, the gaps 101 not only inherit the characteristics of the closed ring, but also are matched with the shape of the connection position of the longitudinal arms 2, so that the gaps 101 can be attached to the longitudinal arms 2 while having high rigidity performance of the cross beam 1, and stress concentration is reduced.

Preferably, the cross beam 1 presents a stacked micro-arch shape from left to right, and the micro-arch cross beam fully considers the deformation of the cross beam when the closed cross beam rolls a closed ring, so that the processing is easier to realize, and the processing difficulty is reduced.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims (3)

1. A closed crossbeam which characterized in that: the spring disc mainly comprises a cross beam (1), longitudinal arms (2) and a spring disc (3), wherein the longitudinal arms (2) are fixed at the left end and the right end of the cross beam (1) through welding, and the spring disc (3) is fixed at the rear end of the cross beam (1) and close to the welding position of the cross beam (1) and the longitudinal arms (2); the cross beam (1) is a pipe fitting with a cross section of a closed annular structure, the center of a gap between closed rings is narrow, the two sides of the gap are wide, and the center gap of the closed rings is gradually enlarged from the middle of the cross beam (1) to the left side and the right side until the outermost side is connected with the longitudinal arm (2).

2. The enclosed cross beam of claim 1, wherein: circular or oval gaps (101) are arranged at the connection parts of the two ends of the cross beam (1) and the longitudinal arms (2), and the shapes of the gaps (101) are matched with the shape of the connection part of the longitudinal arms (2) and the shape of a closed ring of the cross beam (1).

3. The enclosed cross beam of claim 1, wherein: the cross beam (1) presents a stacked micro-arch shape from left to right.

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