CN204196639U - A kind of automobile rear torsion beam structure - Google Patents
A kind of automobile rear torsion beam structure Download PDFInfo
- Publication number
- CN204196639U CN204196639U CN201420567431.1U CN201420567431U CN204196639U CN 204196639 U CN204196639 U CN 204196639U CN 201420567431 U CN201420567431 U CN 201420567431U CN 204196639 U CN204196639 U CN 204196639U
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- section
- crossbeam
- torsion beam
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- trailing arm
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Abstract
The utility model relates to a kind of automobile rear torsion beam structure, comprise crossbeam, left and right trailing arm and spring perch, left and right trailing arm is connected to crossbeam two ends, spring perch is connected on trailing arm, described spring perch is connected with crossbeam again, and described crossbeam is divided into five sections, and centre is V-arrangement section, two ends are class U section, and the excessive section between described V-arrangement section and two ends class U section is excessively smooth to class U-shaped cross section from V-arrangement cross section gradually; The welded lap place of described crossbeam and trailing arm is two circular arcs and straight line, and two limits of the class U section at described crossbeam two ends are circular arc, and bottom is flat segments.Area of stress concentration is shifted and is reduced stress value by this structure in the middle part of torsion beam crossbeam, avoids the reinforcement version between spring perch and torsion beam crossbeam and Main Girder Welding place cracking risk.The two ends of torsion beam crossbeam and trailing arm weld are designed to two circular arcs and straight line, eliminate welding reinforcement, alleviate weight under the requirement that can ensure weld strength.
Description
Technical field
The utility model relates to torsion beam structure, particularly relates to a kind of automobile rear torsion beam structure.
Background technology
Torsion beam rear suspension belongs to semi-independent suspension, and its structure is simple, with low cost, and arrangement space requires little, thus becomes the standard configuration of middle-size and small-size manned vehicle.In prior art, the semi-independent suspension of torsion girder-like comprises an overall V-arrangement or the crossbeam in U-shaped cross section, crossbeam two ends are welded with left and right trailing arm respectively, trailing arm is welded with spring perch, spring perch again with torsion beam beam welding, and crossbeam is as the critical component in torsion beam semi-independent suspension, play power transmission, the stressed effect with being connected balance both sides, when both sides wheel is stressed do not wait time, crossbeam twists elastic deformation, and its torsional stiffness is the handling key factor of impact.Trailing arm and crossbeam end overlapping regions are areas of stress concentration, the frequent Cracking Failure of this position weld seam and crossbeam two ends is found in stand test and road examination, torsional stiffness is reduced, thus cause the roll rate of suspension to reduce, the handling variation of vehicle, extreme case occurs that fracture causes safety misadventure, so very high to the designing requirement of crossbeam.
Utility model content
In view of above-mentioned the deficiencies in the prior art part, the utility model provides a kind of automobile rear torsion beam crossbeam, to solve prior art center member two ends weld problem easy to crack.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of automobile rear torsion beam structure, comprise crossbeam, left and right trailing arm and spring perch, described left and right trailing arm is connected to crossbeam two ends, described spring perch is connected on trailing arm, described spring perch is connected with crossbeam again simultaneously, and described crossbeam is divided into five sections, and centre is V-arrangement section, two ends are class U section, and the excessive section between described V-arrangement section and two ends class U section is excessively smooth to class U-shaped cross section from V-arrangement cross section gradually; The welded lap place of described crossbeam and trailing arm is two circular arcs and straight line, and two limits of the class U section at described crossbeam two ends are circular arc, and bottom is flat segments.
Adopt this design, can make crossbeam under the prerequisite meeting torsional stiffness and fatigue life, area of stress concentration is shifted in the middle part of crossbeam and reduces stress value; Because the welded lap place of crossbeam and trailing arm is designed to two circular arcs and straight line, improves the bond strength at trailing arm and crossbeam two ends, reinforcement need not be welded in addition, reduce the weight of rear torsion beam.
Further, described crossbeam transition section length is greater than class U section.It is longer that transition phase does, and excessively gently, by the length fine tuning torsional stiffness of adjustment transition phase, can also solve the problem of rear torsion beam suspension behavior debug difficulties.
Further, described class U section perimeter of section is greater than V-arrangement section perimeter of section, can make so better to solve the concentrated problem of stress when ensureing torsional stiffness.
Further, described spring perch and described crossbeam class U section straight portion overlap.
Further, the class U section straight portion of described torsion beam crossbeam is provided with knock hole.Separate a pair knock hole at flat part, while not affecting usefulness, improve working accuracy and welding precision.
Further, the class U section opening angle at described two ends is less than middle V-arrangement section opening angle.
Further, described middle V-arrangement section part leading flank is provided with the elongated hole differed in size, and this design can alleviate the weight of torsion beam crossbeam and improve the concentrated problem of torsion beam crossbeam termination lap-joint stress.
Compared with prior art, the automobile rear torsion beam structure that the utility model provides, the torsion beam crossbeam of traditional V-arrangement and U-shaped is combined, such structure is under the prerequisite meeting torsional stiffness and fatigue life, area of stress concentration shifted in the middle part of torsion beam crossbeam and reduces stress value, avoiding the reinforcement version between spring perch and torsion beam crossbeam and Main Girder Welding place cracking risk.And the two ends of torsion beam crossbeam and trailing arm weld are designed to two circular arcs and straight line, under the requirement that can ensure weld strength, eliminate welding reinforcement, alleviate weight.
Accompanying drawing explanation
The schematic diagram of the automobile rear torsion beam structure that Fig. 1 provides for the utility model.
The front view of the automobile rear torsion beam structural beams that Fig. 2 provides for the utility model.
The different cross section site plan of the automobile rear torsion beam structural beams that Fig. 3 provides for the utility model.
Section A-A the figure of the automobile rear torsion beam structural beams that Fig. 4 provides for the utility model.
Fig. 5 schemes for the cross section B-B of the automobile rear torsion beam structural beams that the utility model provides.
Fig. 6 schemes for the cross section C-C of the automobile rear torsion beam structural beams that the utility model provides.
Fig. 7 schemes for the cross section D-D of the automobile rear torsion beam structural beams that the utility model provides.
Fig. 8 schemes for the cross section E-E of the automobile rear torsion beam structural beams that the utility model provides.
The end weld structural representation of the automobile rear torsion beam structural beams that Fig. 9 provides for the utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Embodiment 1, as shown in Figure 1 and Figure 2, a kind of automobile rear torsion beam structure, comprise crossbeam 1, left and right trailing arm 2 and spring perch 3, described left and right trailing arm 2 is connected to crossbeam 1 two ends, described spring perch 3 is connected on trailing arm 2, described spring perch 3 is connected with crossbeam 1 again simultaneously, and described crossbeam 1 is divided into five sections, and centre is V-arrangement section 11, two ends are class U section 13, and the excessive section 12 between described V-arrangement section 11 and two ends class U section 13 is excessively smooth to class U-shaped cross section from V-arrangement cross section gradually; Described crossbeam 1 is two circular arcs and straight line with the welded lap place of trailing arm 2, and two limits of the class U section 13 at described crossbeam 1 two ends are circular arc, and bottom is flat segments.
By the torsion beam crossbeam 1 of V-arrangement and U-shaped is combined, namely solve crossbeam 1 end of U-shaped framework and the stress concentration phenomenon of trailing arm 2 lap-joint, solve again the problem that the torsional stiffness of wishbone structure is little.Under the prerequisite meeting torsional stiffness and fatigue life, the stress effectively alleviating crossbeam 1 and trailing arm 2 lapped butt region is concentrated, and avoids the risk of reinforcement version between spring perch 3 and torsion beam crossbeam 1 and crossbeam 1 weld cracking.The two ends of torsion beam crossbeam 1 and trailing arm 2 weld are designed to two circular arcs and straight line, under the requirement that can ensure weld strength, eliminate welding reinforcement, alleviate weight, decrease operation simultaneously, saved cost.
As shown in Figure 2, preferably, described crossbeam 1 transition phase 12 length is greater than class U section 13.It is longer that transition phase 12 does, and excessively gently, by the length fine tuning torsional stiffness of adjustment transition phase 12, can also solve the problem of rear torsion beam suspension behavior debug difficulties.
As shown in Figure 1, preferably, described spring perch 3 and described crossbeam 1 class U section 13 straight portion overlap.Enhance the intensity of welding and and make automobile rear torsion beam structure more firm.
As shown in Figure 2, preferably, knock hole 4 is provided with in class U section 13 straight portion of described torsion beam crossbeam 1.Separate a pair knock hole 4 at flat part, while not affecting usefulness, improve working accuracy and welding precision.
As shown in Figures 3 to 8, preferably, described class U section 13 perimeter of section is greater than V-arrangement section 11 perimeter of section, can make so better to solve the concentrated problem of stress when ensureing torsional stiffness.Class U section 13 opening can be parallel, can have certain angle, and in the present embodiment, preferred class U section 13 has certain angle, but class U section 13 opening angle at described two ends is less than middle V-arrangement section 11 opening angle.
Embodiment 2, the present embodiment 2 is on the basis of embodiment 1, be provided with at described middle V-arrangement section 11 part leading flank the elongated hole 51,52 differed in size, this design can alleviate the weight of torsion beam crossbeam 1 and improve the concentrated problem of torsion beam crossbeam 1 termination lap-joint stress.
In sum, by torsion beam crossbeam 1 being designed to the torsion beam crossbeam of V-arrangement and U-shaped is combined, such structure is under the prerequisite meeting torsional stiffness and fatigue life, area of stress concentration shifted in the middle part of torsion beam crossbeam 1 and reduces stress value, avoiding the reinforcement version between spring perch 3 and torsion beam crossbeam 1 and crossbeam 1 weld cracking risk.And the two ends of torsion beam crossbeam 1 and trailing arm 2 weld are designed to two circular arcs and straight line, under the requirement that can ensure weld strength, eliminate welding reinforcement, alleviate weight.
Above content is in conjunction with concrete preferred implementation to the further description done by the utility model, can not assert that concrete enforcement of the present utility model is only limited to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (7)
1. an automobile rear torsion beam structure, comprise crossbeam, left and right trailing arm and spring perch, described left and right trailing arm is connected to crossbeam two ends, described spring perch is connected on trailing arm, and described spring perch is connected with crossbeam again simultaneously, it is characterized in that, described crossbeam is divided into five sections, centre is V-arrangement section, and two ends are class U section, and the excessive section between described V-arrangement section and two ends class U section is excessively smooth to class U-shaped cross section from V-arrangement cross section gradually; The welded lap place of described crossbeam and trailing arm is two circular arcs and straight line, and two limits of the class U section at described crossbeam two ends are circular arc, and bottom is flat segments.
2. automobile rear torsion beam structure according to claim 1, is characterized in that, described crossbeam transition section length is greater than class U section.
3. automobile rear torsion beam structure according to claim 2, is characterized in that, described class U section perimeter of section is greater than V-arrangement section perimeter of section.
4. automobile rear torsion beam structure according to claim 1, is characterized in that, described spring perch and described crossbeam class U section straight portion overlap.
5. automobile rear torsion beam structure according to claim 4, is characterized in that, the class U section straight portion of described torsion beam crossbeam is provided with knock hole.
6. automobile rear torsion beam structure according to claim 1, is characterized in that, the class U section opening angle at described two ends is less than middle V-arrangement section opening angle.
7., according to the arbitrary described automobile rear torsion beam structure of claim 1-6, it is characterized in that, described middle V-arrangement section part leading flank is provided with the elongated hole differed in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420567431.1U CN204196639U (en) | 2014-09-29 | 2014-09-29 | A kind of automobile rear torsion beam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420567431.1U CN204196639U (en) | 2014-09-29 | 2014-09-29 | A kind of automobile rear torsion beam structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204196639U true CN204196639U (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420567431.1U Expired - Fee Related CN204196639U (en) | 2014-09-29 | 2014-09-29 | A kind of automobile rear torsion beam structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204196639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109305013A (en) * | 2017-07-27 | 2019-02-05 | 株式会社威泰克 | Vehicle twist-beam suspension and vehicle torsion beam |
-
2014
- 2014-09-29 CN CN201420567431.1U patent/CN204196639U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109305013A (en) * | 2017-07-27 | 2019-02-05 | 株式会社威泰克 | Vehicle twist-beam suspension and vehicle torsion beam |
| CN109305013B (en) * | 2017-07-27 | 2022-03-18 | 株式会社威泰克 | Torsion beam type suspension for vehicle and torsion beam for vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20200929 |