CN104554444B - Automobile rear sub-frame - Google Patents
Automobile rear sub-frame Download PDFInfo
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- CN104554444B CN104554444B CN201410727885.5A CN201410727885A CN104554444B CN 104554444 B CN104554444 B CN 104554444B CN 201410727885 A CN201410727885 A CN 201410727885A CN 104554444 B CN104554444 B CN 104554444B
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- tubule
- tube
- longitudinal tubule
- cross
- rear cross
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The present invention refers in particular to a kind of automobile rear sub-frame, belong to field of automobile, including preceding transverse tube and rear cross-tube, and the left longitudinal tubule (L tubule) being connected respectively with preceding transverse tube and rear cross-tube and right longitudinal tubule (L tubule), four into " well " word structure, preceding transverse tube both ends are respectively equipped with interior connecting plate and outside link plate with left longitudinal tubule (L tubule) and right longitudinal tubule (L tubule) junction, upper suspension arm left installation bracket and upper suspension arm right mounting bracket are respectively equipped with the middle part of left longitudinal tubule (L tubule) and right longitudinal tubule (L tubule), top is provided with stabiliser bar left installation bracket and stabiliser bar right mounting bracket；No. II swing arm left installation bracket and No. II swing arm right mounting bracket are provided with the middle part of rear cross-tube；The end at preceding transverse tube both ends is respectively equipped with No. I swing arm left installation bracket and No. I swing arm right mounting bracket；Rear cross-tube, left longitudinal tubule (L tubule) are consistent with the cross section of the respective pipe shaft section of right longitudinal tubule (L tubule), and the cross section after the two side pressures bundle of rear cross-tube is U-shaped, and the both ends of rear cross-tube are provided with reinforcing plate.Moulding process of the present invention is simple, reasonable integral structure, fatigue resistance enhancing, and security performance is high.
Description
Technical field
The invention belongs to field of automobile, refers in particular to a kind of automobile rear sub-frame.
Background technology
Automobile accessory frame is to support tandem axle, the support of suspension, vehicle bridge, suspension is connected again with vehicle body by it, has
There are barrier vibration and noise.Automobile accessory frame is the parts for closing very much weight, and the vehicle body in region is attached to it
Structure has higher requirements, therefore the car body and the structure of periphery load bearing element being connected with subframe, and subframe and car body
The design of connected mode is just particularly important.
In the prior art, the connection of subframe and car body is usually the connected mode using bolt and nut, and major way is
Coordinated using nutplate and nut box, nutplate base is bonded with body parts, and nutplate top passes through jagged on nut box
Hole, so its scope of activities is restrained, then three sides of nut box with body parts by protecting weldering to weld together.It is this
The nutplate of structure is shaped as square, the length of side about 30mm, thickness 5mm, because by nutplate, this body structure is limited to, spiral shell
The connecting length of motherboard and bolt falls short of, and is only 14.5mm, it is impossible to meet the requirement for the impulsive force that middle-and-high-ranking vehicle is born, and
Bolt does not have guide effect when installing, it is easy to because stripped thread causes bolt installation failure.
The content of the invention
It is an object of the invention to provide a kind of processing technology is simple, high, the transmission of stress of saving production cost, production efficiency
It is smooth, be uniformly dispersed, improve the automobile rear sub-frame of security.
The object of the present invention is achieved like this：Automobile rear sub-frame, including preceding transverse tube and rear cross-tube, and respectively with it is preceding
The left longitudinal tubule (L tubule) and right longitudinal tubule (L tubule) that transverse tube connects with rear cross-tube, four into " well " word structure, the preceding transverse tube both ends and the left longitudinal tubule (L tubule)
Interior connecting plate and outside link plate are respectively arranged with right longitudinal tubule (L tubule) junction, and is connected by way of welding, wherein, it is described left vertical
Upper suspension arm left installation bracket is provided with the middle part of pipe, top is provided with stabiliser bar left installation bracket；The middle part of the right longitudinal tubule (L tubule)
Upper suspension arm right mounting bracket is provided with, top is provided with stabiliser bar right mounting bracket；No. II is provided with the middle part of the rear cross-tube
Swing arm left installation bracket and No. II swing arm right mounting bracket；The end at the preceding transverse tube both ends is respectively arranged with No. I left peace of swing arm
Fill support and No. I swing arm right mounting bracket；The cross section of the pipe shaft section of the rear cross-tube is consistent, the pipe shaft section of the left longitudinal tubule (L tubule)
Cross section is consistent, and the cross section of the pipe shaft section of the right longitudinal tubule (L tubule) is consistent, simplifies processing technology, and shaping is fast, efficiency high, cost-saving,
Make being evenly distributed for stress, transmit it is smooth, will not concentrations, the cross section after two side pressures of the rear cross-tube are pricked is U-shaped, and
Rear cross-tube is provided at both ends with reinforcing plate, the local stress bearing capacity for improving end, avoids passing through the overall thick of increase rear cross-tube
Spend to improve stress bearing capacity, and cause the waste of material.
Automobile rear sub-frame mentioned above, wherein, the left longitudinal tubule (L tubule) and right longitudinal tubule (L tubule) and the end of the rear cross-tube junction
Portion is in ellipticity, increases the length of weld seam, improves the smoothness of stress transmission, avoids stress from excessively concentrating, cause fatigue of materials
Cracking.
Automobile rear sub-frame mentioned above, wherein, the cross section of the rear cross-tube, left longitudinal tubule (L tubule) and right longitudinal tubule (L tubule) is circle,
Shirt rim I is provided with the interior connecting plate and outside link plate, the shirt rim I is welded in the outer wall of the left longitudinal tubule (L tubule) and right longitudinal tubule (L tubule)
On, contact area is increased by shirt rim I, realizes the welding in face and face, improves stress bearing capacity, meanwhile, pass through the mistake of shirt rim I
Cross, improve the smoothness of stress transmission, avoid stress concentrations.
Automobile rear sub-frame mentioned above, wherein, the right installation branch of upper suspension arm left installation bracket and upper suspension arm
Shirt rim II is provided with frame, and stabiliser bar left installation bracket and stabiliser bar right mounting bracket, the shirt rim II is welded in institute
On the outer wall for stating left longitudinal tubule (L tubule) and right longitudinal tubule (L tubule).Contact area is increased by shirt rim II, realizes the welding in face and face, improves stress carrying
Power, meanwhile, by the transition of shirt rim II, the smoothness of stress transmission is improved, avoids stress concentrations.
Automobile rear sub-frame mentioned above, wherein, No. II swing arm left installation bracket and the right installation branch of No. II swing arm
Frame is provided with shirt rim III with the rear cross-tube junction.Contact area is increased by shirt rim III, realizes the welding in face and face, is improved
Stress bearing capacity, meanwhile, by the transition of shirt rim III, the smoothness of stress transmission is improved, avoids stress concentrations.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that：Moulding process is simple, reasonable integral structure, resists
Fatigability strengthens, and security performance is high.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the close-up schematic view in Fig. 1；
Fig. 3 is vehicle frame stiffness analysis table；
In figure：10- rear cross-tubes, transverse tube before 11-, the left longitudinal tubule (L tubule)s of 12-, the right longitudinal tubule (L tubule)s of 13-, connecting plate in 14-, 15- outside link plates,
16- stabiliser bar left installation brackets, 17- stabiliser bar right mounting brackets, 18- upper suspension arm left installation brackets, the right peace of 19- upper suspension arms
Fill support, No. II swing arm left installation bracket of 20-, No. II swing arm right mounting bracket of 21-, No. I swing arm left installation bracket of 22-, 23- I
Number swing arm right mounting bracket, 24- reinforcing plates, 25- shirt rims I, 26- shirt rims II, 27- shirt rims III.
Embodiment
With specific embodiment, the invention will be further described below in conjunction with the accompanying drawings, referring to Fig. 1-3：Automobile rear sub-frame,
Including preceding transverse tube 11 and rear cross-tube 10, and the left longitudinal tubule (L tubule) 12 and right longitudinal tubule (L tubule) 13 being connected respectively with preceding transverse tube 11 and rear cross-tube 10,
Four are respectively arranged with interior company into " well " word structure, the preceding both ends of transverse tube 11 with the left longitudinal tubule (L tubule) 12 and the junction of right longitudinal tubule (L tubule) 13
Fishplate bar 14 and outside link plate 15, and connected by way of welding, the left longitudinal tubule (L tubule) 12 and right longitudinal tubule (L tubule) 13 and the rear cross-tube 10
The end of junction is in ellipticity, increases the length of weld seam, improves the smoothness of stress transmission, avoids stress from excessively concentrating, lead
Cause fatigue of materials cracking.Wherein, the middle part of the left longitudinal tubule (L tubule) 12 is provided with upper suspension arm left installation bracket 18, and top is provided with surely
Fixed pole left installation bracket 16；The middle part of the right longitudinal tubule (L tubule) 13 is provided with upper suspension arm right mounting bracket 19, and top is provided with stabilization
Bar right mounting bracket 17；The middle part of rear cross-tube 10 is provided with No. II swing arm left installation bracket 20 and No. II swing arm right mounting bracket
21；The end at the both ends of preceding transverse tube 11 is respectively arranged with No. I swing arm left installation bracket 22 and No. I swing arm right mounting bracket 23；
The cross section of the pipe shaft section of the rear cross-tube 10 is consistent, and the cross section of the pipe shaft section of the left longitudinal tubule (L tubule) 12 is consistent, the right longitudinal tubule (L tubule)
The cross section of 13 pipe shaft section is consistent, simplifies processing technology, shaping is fast, efficiency high, cost-saving, two side pressures of the rear cross-tube 10
Cross section after bundle is U-shaped, and rear cross-tube 10 is provided at both ends with reinforcing plate 24, the local stress bearing capacity for improving end, keeps away
Exempt to improve stress bearing capacity by increasing the integral thickness of rear cross-tube 10, and cause the waste of material.
The cross section of the rear cross-tube 10, left longitudinal tubule (L tubule) 12 and right longitudinal tubule (L tubule) 13 is circle, the interior connecting plate 14 and outer connection
Shirt rim I 25 is provided with plate 15, the shirt rim I 25 is welded on the outer wall of the left longitudinal tubule (L tubule) 12 and right longitudinal tubule (L tubule) 13, passes through skirt
Side I 25 increases contact area, realizes the welding in face and face, improves stress bearing capacity, meanwhile, by the transition of shirt rim I 25, improve
The smoothness of stress transmission, avoids stress concentrations.
The upper suspension arm left installation bracket 18 and upper suspension arm right mounting bracket 19, and stabiliser bar left installation bracket 16
With shirt rim II 26 is provided with stabiliser bar right mounting bracket 17, the shirt rim II 26 is welded in the left longitudinal tubule (L tubule) 12 and right longitudinal tubule (L tubule)
On 13 outer wall.Contact area is increased by shirt rim II 26, realizes the welding in face and face, improves stress bearing capacity, meanwhile, pass through
The transition of shirt rim II 26, the smoothness of stress transmission is improved, avoids stress concentrations.
No. II swing arm left installation bracket 20 and No. II swing arm right mounting bracket 21 are set with the junction of rear cross-tube 10
It is equipped with shirt rim III 27.Contact area is increased by shirt rim III 27, realizes the welding in face and face, improves stress bearing capacity, meanwhile, lead to
The transition of shirt rim III 27 is crossed, the smoothness of stress transmission is improved, avoids stress concentrations.
Rear secondary frame for vehicle rigidity is analyzed as follows with reference to Fig. 1 and Fig. 3：
Rear secondary frame for vehicle vehicle body 6 frees degree of tie point are constrained, load No. I swing arm (left and right) mounting bracket tie point respectively
10kN, No. II swing arm (left and right) mounting bracket tie point 10kN, upper suspension arm (left and right) mounting bracket tie point 10kN, stably
Bar (left and right) mounting bracket tie point 2kN.
Load is applied from tri- directions of X, Y, Z respectively to above-mentioned several tie points, after stress, each tie point it is each
Displacement is all produced on direction accordingly, also there is corresponding rigidity value.Form in analysis result such as Fig. 3, the rigidity of Rear secondary frame for vehicle
Fully meet the rigidity value of target call.
Meanwhile following test is also done to Rear secondary frame for vehicle：
1st, composite condition, composite condition maximum stress 180MPa, less than material yield strength.
2nd, forward brake, forward brake maximum stress 110MPa, less than material yield strength.
3rd, hole operating mode is crossed, hole operating mode maximum stress 224MPa is crossed, less than material yield strength.
4th, lateral impact 1, the maximum stress 174MPa of lateral impact 1, less than material yield strength.
5th, lateral impact 2, the maximum stress 153MPa of lateral impact 2, less than material yield strength.
6th, reversing top bar, move backward top bar maximum stress 148MPa, less than material yield strength.
7th, vertical impact, vertical impact maximum stress 187MPa, less than material yield strength.
Above-mentioned test is the safety test subject of automobile industry standard, and its data is also authentic and valid, is tied from test
From the point of view of fruit, Rear secondary frame for vehicle maximum stress is 224MPa, and the yield strength of material is bent up to 300MPa less than material in the present invention
Intensity is taken, fully meets intensity requirement.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore：It is all according to
The equivalence changes that structure, shape, the principle of the present invention is done, all should be covered by within protection scope of the present invention.
Claims (2)
1. automobile rear sub-frame, including preceding transverse tube and rear cross-tube, and the left longitudinal tubule (L tubule) that is connected respectively with preceding transverse tube and rear cross-tube and
Right longitudinal tubule (L tubule), four are respectively arranged with interior into " well " word structure, the preceding transverse tube both ends with the left longitudinal tubule (L tubule) and right longitudinal tubule (L tubule) junction
Connecting plate and outside link plate, it is characterised in that：Upper suspension arm left installation bracket is provided with the middle part of the left longitudinal tubule (L tubule), top is set
There is stabiliser bar left installation bracket；Upper suspension arm right mounting bracket is provided with the middle part of the right longitudinal tubule (L tubule), top is provided with stabiliser bar
Right mounting bracket；No. II swing arm left installation bracket and No. II swing arm right mounting bracket are provided with the middle part of the rear cross-tube；Before described
The end at transverse tube both ends is respectively arranged with No. I swing arm left installation bracket and No. I swing arm right mounting bracket；The pipe shaft of the rear cross-tube
The cross section of section is consistent, and the cross section of the pipe shaft section of the left longitudinal tubule (L tubule) is consistent, and the cross section of the pipe shaft section of the right longitudinal tubule (L tubule) is consistent,
Cross section after two side pressures of the rear cross-tube are pricked is U-shaped, and rear cross-tube is provided at both ends with reinforcing plate；The rear cross-tube, a left side
The cross section of longitudinal tubule (L tubule) and right longitudinal tubule (L tubule) is circle, is provided with shirt rim I on the interior connecting plate and outside link plate, the shirt rim I is welded
It is connected on the outer wall of the left longitudinal tubule (L tubule) and right longitudinal tubule (L tubule)；The upper suspension arm left installation bracket and upper suspension arm right mounting bracket, with
And shirt rim II is provided with stabiliser bar left installation bracket and stabiliser bar right mounting bracket, the shirt rim II is welded in described left vertical
On the outer wall of pipe and right longitudinal tubule (L tubule)；No. II swing arm left installation bracket and No. II swing arm right mounting bracket are connected with the rear cross-tube
Place is provided with shirt rim III.
2. automobile rear sub-frame according to claim 1, it is characterised in that：The left longitudinal tubule (L tubule) and right longitudinal tubule (L tubule) and the rear horizontal stroke
The end of pipe junction is in ellipticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410727885.5A CN104554444B (en) | 2014-12-03 | 2014-12-03 | Automobile rear sub-frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410727885.5A CN104554444B (en) | 2014-12-03 | 2014-12-03 | Automobile rear sub-frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104554444A CN104554444A (en) | 2015-04-29 |
| CN104554444B true CN104554444B (en) | 2017-12-12 |
Family
ID=53071765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410727885.5A Active CN104554444B (en) | 2014-12-03 | 2014-12-03 | Automobile rear sub-frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104554444B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107878562A (en) * | 2017-11-02 | 2018-04-06 | 安徽万安汽车零部件有限公司 | A kind of hollow low pressure casting multi link 4 wheel driven Rear secondary frame for vehicle of Integral aluminum alloy |
| CN112141213A (en) * | 2019-06-28 | 2020-12-29 | 广州汽车集团股份有限公司 | Rear auxiliary frame and automobile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6511096B1 (en) * | 1999-03-06 | 2003-01-28 | Dr. Ing. H.C.F. Porsche Ag | Subframe for a motor vehicle |
| CN201424053Y (en) * | 2008-02-22 | 2010-03-17 | F.波尔希名誉工学博士公司 | Sub-frame for car rear axle |
| CN202098460U (en) * | 2011-06-03 | 2012-01-04 | 上海汇众汽车制造有限公司 | Auxiliary frame with plug welding groove structures for strengthening |
| CN202966434U (en) * | 2012-11-30 | 2013-06-05 | 广州汽车集团股份有限公司 | Automobile rear subframe and corresponding automobile |
| CN204415511U (en) * | 2014-12-03 | 2015-06-24 | 浙江福多纳汽车部件有限公司 | Automobile rear sub-frame |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101034019B1 (en) * | 2008-11-20 | 2011-05-11 | 현대자동차주식회사 | Dynamic damping apparatus |
| KR20130016509A (en) * | 2011-08-08 | 2013-02-18 | 현대자동차주식회사 | Structure of front subframe |
-
2014
- 2014-12-03 CN CN201410727885.5A patent/CN104554444B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6511096B1 (en) * | 1999-03-06 | 2003-01-28 | Dr. Ing. H.C.F. Porsche Ag | Subframe for a motor vehicle |
| CN201424053Y (en) * | 2008-02-22 | 2010-03-17 | F.波尔希名誉工学博士公司 | Sub-frame for car rear axle |
| CN202098460U (en) * | 2011-06-03 | 2012-01-04 | 上海汇众汽车制造有限公司 | Auxiliary frame with plug welding groove structures for strengthening |
| CN202966434U (en) * | 2012-11-30 | 2013-06-05 | 广州汽车集团股份有限公司 | Automobile rear subframe and corresponding automobile |
| CN204415511U (en) * | 2014-12-03 | 2015-06-24 | 浙江福多纳汽车部件有限公司 | Automobile rear sub-frame |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104554444A (en) | 2015-04-29 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180205 Address after: 321200 industrial peony South Road, Baihua Mountain, Wuyi County, Jinhua, Zhejiang Province, No. 36 Patentee after: Zhejiang tuin Auto Parts Co., Ltd. Address before: 321299 Rose Road No. 1, Baihua Mountain industrial area, Wuyi County, Jinhua, Zhejiang Patentee before: ZHEJIANG FURTUNA AUTO PARTS CO., LTD. |
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| TR01 | Transfer of patent right |