CN203318512U

CN203318512U - Automobile rear suspension beam assembly structure

Info

Publication number: CN203318512U
Application number: CN2013203889140U
Authority: CN
Inventors: 陈正康; 龚成斌; 侯爽
Original assignee: JIAN'AN REAR AXLE AUTOMOBILE CO Ltd CHINA CHANG'AN SICHUAN BRANCH
Current assignee: Sichuan Jian'an Industrial Ltd
Priority date: 2013-07-02
Filing date: 2013-07-02
Publication date: 2013-12-04
Anticipated expiration: 2023-07-02

Abstract

The utility model discloses an automobile rear suspension beam assembly structure which is relatively high in cross beam strength, strong in durability, good in trafficability characteristic and capable of greatly improving the vehicle performance. The automobile rear suspension beam assembly structure comprises a cross beam and a torsion bar, wherein two ends of the cross beam are respectively connected with a trailing arm, a spring support is connected to the trailing arm, a tire bracket is arranged at the end part of the trailing arm, two ends of the torsion bar are respectively connected with the corresponding trailing arms, the cross beam comprises an arc upwards-bulged section and linear descending sections symmetrically arranged at two sides of the arc upwards-bulged section, the arc upwards-bulged section is vertical to the bottom surface of the spring support and upwards bulges in a direction of deviating from the spring support, the linear descending sections are connected with the corresponding trailing arms, and the torsion bar is matched with the cross beam in shape.

Description

The rear overhang rack beam assembly structure

Technical field

The utility model relates to a kind of rear overhang rack beam assembly structure.

Background technology

In prior art, the rear overhang rack beam assembly structure generally comprises crossbeam and torsion bar, and the crossbeam two ends are connected with respectively trailing arm, is connected with spring bearing on trailing arm, and the end of trailing arm is provided with tire support, and the two ends of torsion bar are connected with corresponding trailing arm respectively.Above-mentioned crossbeam is generally linear, and this crossbeam is easy to process, is convenient to assembling.But in actual use, the intensity of this linear crossbeam can satisfy the demands in the ordinary course of things.But at some special road sections or in particular cases, car body generation severe jolt or vibrations, at this moment, the intensity of above-mentioned linear crossbeam is often inadequate, easily deforms.

The utility model content

The technical matters that the utility model solves is to provide the rear overhang rack beam assembly structure that a kind of beam strength is higher.

The utility model solves the technical scheme that its technical matters adopts: the rear overhang rack beam assembly structure, comprise crossbeam and torsion bar, the crossbeam two ends are connected with respectively trailing arm, be connected with spring bearing on trailing arm, the end of trailing arm is provided with tire support, the two ends of torsion bar are connected with corresponding trailing arm respectively, the linear section of having a down dip that described crossbeam comprises the arc upper convex section and is symmetricly set on arc upper convex section both sides, the arc upper convex section is towards vertical with the bottom surface of spring bearing and deviate from the direction epirelief of spring bearing, the linear section of having a down dip is connected with corresponding trailing arm, the shape of torsion bar and the form fit of crossbeam.

Because above-mentioned crossbeam adopts curve form, obviously different from existing linear crossbeam.The crossbeam of this shape obviously improves by testing its intensity.And durability is strong, crossing ability is good, can increase substantially vehicle performance.

Further: the spring positioning groove that described spring bearing comprises the spring perch lower body and is arranged on the spring perch lower body.

Further: described spring perch lower body and spring positioning groove are the integral type structure.

Further: described trailing arm is open end away from an end of crossbeam, is provided with the locating dowel pin that crosses trailing arm on the sidewall of described open end.

The beneficial effects of the utility model are: beam strength is higher, and durability is strong, and crossing ability is good, can increase substantially vehicle performance.

The accompanying drawing explanation

The schematic diagram that Fig. 1 is rear overhang rack beam assembly structure of the present utility model;

In figure, be labeled as: crossbeam 1, arc upper convex section 2, the linear section of having a down dip 3, trailing arm 4, tire support 5, bottom surface 6, spring bearing 7, torsion bar 8, spring positioning groove 9, spring perch lower body 10, open end 11, locating dowel pin 12.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.

As shown in Figure 1, rear overhang rack beam assembly structure of the present utility model, comprise crossbeam 1 and torsion bar 8, crossbeam 1 two ends are connected with respectively trailing arm 4, be connected with spring bearing 7 on trailing arm, the end of trailing arm 4 is provided with tire support 5, the two ends of torsion bar 8 are connected with corresponding trailing arm 4 respectively, the linear section of having a down dip 3 that described crossbeam 1 comprises arc upper convex section 2 and is symmetricly set on arc upper convex section 2 both sides, arc upper convex section 2 is towards vertical with the bottom surface 6 of spring bearing 7 and deviate from the direction epirelief of spring bearing, the linear section of having a down dip 3 is connected with corresponding trailing arm 4, the form fit of the shape of torsion bar 8 and crossbeam 1.Above-mentioned arc upper convex section 2 is towards vertical with the bottom surface 6 of spring bearing 7 and deviate from the direction epirelief of spring bearing, namely when the bottom surface of spring bearing 76 levels are shelved, as shown in Figure 1, arc upper convex section 2 protrudes towards direction straight up, and arc upper convex section 2 both sides are respectively the linear section of having a down dip 3.The form fit of the shape of above-mentioned torsion bar 8 and crossbeam 1 refers to that torsion bar 8 is also a curve shape, fully according to the curved shape coupling of crossbeam, and can be with reference to figure 1.

As shown in Figure 1, the utility model also is optimized design to spring bearing 7, the spring positioning groove 9 that described spring bearing 7 comprises spring perch lower body 10 and is arranged on spring perch lower body 10.The spring bearing 7 of this structure is simple in structure, easy to assembly, is convenient to spring is fixed and spring is carried out to good support.On the basis of the above, in order to improve the bulk strength of spring bearing 7, be convenient to processing and manufacturing, described spring perch lower body 10 is the integral type structure with spring positioning groove 9.

For the ease of damping cylinder is installed in the trailing arm end, as shown in Figure 1, described trailing arm is open end 11 away from an end of crossbeam, is provided with the locating dowel pin 12 that crosses trailing arm on the sidewall of described open end 11.During use, the lower end of damping cylinder is connected with locating dowel pin 12.

Claims

1. rear overhang rack beam assembly structure, comprise crossbeam (1) and torsion bar (8), crossbeam (1) two ends are connected with respectively trailing arm (4), be connected with spring bearing (7) on trailing arm, the end of trailing arm (4) is provided with tire support (5), the two ends of torsion bar (8) are connected with corresponding trailing arm (4) respectively, it is characterized in that: the linear section of having a down dip (3) that described crossbeam (1) comprises arc upper convex section (2) and is symmetricly set on arc upper convex section (2) both sides, arc upper convex section (2) is towards vertical with the bottom surface (6) of spring bearing (7) and deviate from the direction epirelief of spring bearing, the linear section of having a down dip (3) is connected with corresponding trailing arm (4), the form fit of the shape of torsion bar (8) and crossbeam (1).

2. rear overhang rack beam assembly structure as claimed in claim 1, is characterized in that: the spring positioning groove (9) that described spring bearing (7) comprises spring perch lower body (10) and is arranged on spring perch lower body (10).

3. rear overhang rack beam assembly structure as claimed in claim 2 is characterized in that: described spring perch lower body (10) is the integral type structure with spring positioning groove (9).

4. rear overhang rack beam assembly structure as claimed in claim 1, it is characterized in that: described trailing arm is open end (11) away from an end of crossbeam, is provided with the locating dowel pin (12) that crosses trailing arm on the sidewall of described open end (11).