CN103523091A - Auxiliary frame hard connecting structure used for being connected with automobile body - Google Patents
Auxiliary frame hard connecting structure used for being connected with automobile body Download PDFInfo
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- CN103523091A CN103523091A CN201310097336.XA CN201310097336A CN103523091A CN 103523091 A CN103523091 A CN 103523091A CN 201310097336 A CN201310097336 A CN 201310097336A CN 103523091 A CN103523091 A CN 103523091A
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- subframe
- vehicle body
- automobile body
- steel plate
- high tensile
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Abstract
The invention aims to provide an auxiliary frame hard connecting structure used for being connected with an automobile body. The purpose is to improve NVH performance of an automobile chassis system. The auxiliary frame hard connecting structure comprises rear automobile body connecting points connected with the automobile body, high-strength steel plates are arranged on the rear automobile body connecting points and make contact with the automobile body in a friction mode, and the strength is more than 800MPa. Multiple small holes are formed in the high-strength steel plates so that the weight of the high-strength steel plates can be reduced while surface roughness is enhanced.
Description
Technical field
The present invention relates to automobile accessory frame, relate in particular to the hard connection structure of subframe for being connected with vehicle body.
Background technology
Subframe assembly is important safety part and the load member in car chassis system, its intensity, rigidity, fatigue, NVH performance (noise, vibration and sound vibration roughness or impact characteristics) etc. have high requirement, are bearing turning in running car, braking and vertical load.The intensity of subframe, rigidity, fatigue, NVH performance etc. directly have influence on safety, travelling comfort of car load etc.
The mode that traditional subframe assembly is connected with vehicle body has and is flexible coupling and is firmly connected, the former is connected with vehicle body by buffering parts such as rubber bush or hydraulic bushings, the latter is directly connected with vehicle body, and on joint face, increases boss with embossing to improve the friction force between subframe assembly and vehicle body.Traditional subframe assembly 1 be hard connecting mode as shown in Figure 1, front body point of connection is provided with a sleeve pipe 10 with the level, rear vehicle body point of connection is provided with a round boss 11 on subframe body, on the joint face of sleeve pipe 10 and boss 11 with spoke type embossed designs, to increase the friction force of binding face.Hard connection structure has low-cost advantage, easily occurs abnormal sound in the driving process of vehicle.
Summary of the invention
The object of the present invention is to provide a kind of hard connection structure of subframe for being connected with vehicle body, to improve the NVH performance of car chassis system.
For realizing the hard connection structure of the subframe for being connected with vehicle body of described object, comprise the rear vehicle body point of connection being connected with vehicle body, wherein, this rear vehicle body point of connection arrange with vehicle body wipe contact, the high tensile steel plate of intensity more than 800MPa, on this high tensile steel plate, be furnished with a plurality of apertures, alleviate the weight of this high tensile steel plate when strengthening roughness of surface.
The hard connection structure of described subframe, wherein, the middle part of described high tensile steel plate is formed with mounting hole, the size of this mounting hole is the same at the endoporus of the reinforcing sleeve of this rear vehicle body point of connection with subframe, and the edge of this mounting hole is formed with flange, this high tensile steel plate is, by press-fit approach, described flange is snapped in to described mounting hole.
The hard connection structure of described subframe, wherein, the edge of this mounting hole is formed with the described flange of two symmetries.
Aforementioned techniques scheme adopts high tensile steel plate with holes to substitute the subframe assembly of embossing boss, and its car load NVH performance is improved, and this structure can effectively be avoided after-sales service simultaneously, reduces the use cost of vehicle.
Accompanying drawing explanation
Fig. 1 is the structural representation of the subframe of the hard connection structure of tradition.
Fig. 2 is the structural representation of the subframe of hard connection structure in the embodiment of the present invention.
Fig. 3 is the front view of high tensile steel plate in the embodiment of the present invention.
Fig. 4 is the lateral plan of high tensile steel plate in the embodiment of the present invention.
The specific embodiment
As shown in Figure 2, before the vehicle body of subframe 2, point of connection 20 adopts traditional hard connection structure, is sleeve pipe with the level, the embossing of contact surface band.Rear vehicle body point of connection 21 places of subframe 2 cancel the boss structure with embossing, change in junction, press-fiting a band and being permitted lacunary pad 21.
Be being connected of pad 21 and subframe by press-fit approach, the flange 213 of design on pad 21 to be stuck in and realize on the inner hole wall of subframe reinforcing sleeve 22 herein, after car load assembling, this pad 21 is disposed between subframe and vehicle body.
Its NVH performance of the hard connection structure of previous embodiment and traditional flexible connection structure are basically identical, and single vehicle cost is lower, due to the high-strength characteristic of its pad, there will not be excessive wear and damage in vehicle use procedure simultaneously, have avoided after-sales service.
In actual design, constructional feature due to subframe, its body construction is comparatively complicated, generally can only select middle strength steel sheet as bulk material, the area of the boss 11 that then vehicle body point of connection place is provided with is limited by the structure of subframe and vehicle body installation site and the Sheet Metal Forming Technology of boss 11 thereof can be not excessive, thereby the friction force producing between point of connection and vehicle body after subframe is limited, the NVH poor-performing of car load
To the NVH approval of subframe assembly, be mainly to carry out according to the special reason test criteria of the car load NVH of producer inside, under the road type of appointment, the speed of a motor vehicle, carry out road examination, the abnormal sound of NVH does not occur within the scope of the mileage of regulation, and the evaluation of NVH is to adopt subjective assessment mode.
The boss structure of the traditional design body band embossing shown in Fig. 1, after only reaching the mileage of 70% left and right in the examination of its subframe assembly NVH road, there is obvious abnormal sound, for the embossing of boss 11, wear and tear in the process of moving by analysis, cause friction force between subframe and vehicle body to reduce, occur abnormal sound.
Previous embodiment adopts the pad of (mode by punching changes roughness of surface raising friction force) with holes of high tensile steel plate by increase, when the friction force of subframe and vehicle body junction is effectively provided, improve Joint strenght, avoid because part premature wear causes junction friction force deficiency, causing that NVH noise produces inefficacy in car load use procedure.
Claims (3)
1. the hard connection structure of subframe for being connected with vehicle body, comprise the rear vehicle body point of connection being connected with vehicle body, it is characterized in that, this rear vehicle body point of connection arrange with vehicle body wipe contact, the high tensile steel plate of intensity more than 800MPa, on this high tensile steel plate, be furnished with a plurality of apertures, alleviate the weight of this high tensile steel plate when strengthening roughness of surface.
2. the hard connection structure of subframe as claimed in claim 1, it is characterized in that, the middle part of described high tensile steel plate is formed with mounting hole, the size of this mounting hole is the same at the endoporus of the reinforcing sleeve of this rear vehicle body point of connection with subframe, and the edge of this mounting hole is formed with flange, this high tensile steel plate is, by press-fit approach, described flange is snapped in to described mounting hole.
3. the hard connection structure of subframe as claimed in claim 1, is characterized in that, the edge of this mounting hole is formed with the described flange of two symmetries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310097336.XA CN103523091A (en) | 2013-03-25 | 2013-03-25 | Auxiliary frame hard connecting structure used for being connected with automobile body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310097336.XA CN103523091A (en) | 2013-03-25 | 2013-03-25 | Auxiliary frame hard connecting structure used for being connected with automobile body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103523091A true CN103523091A (en) | 2014-01-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310097336.XA Pending CN103523091A (en) | 2013-03-25 | 2013-03-25 | Auxiliary frame hard connecting structure used for being connected with automobile body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103523091A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6095481A (en) * | 1999-05-07 | 2000-08-01 | Illinois Tool Works, Inc. | Breakaway shock isolating mount |
| CN1854006A (en) * | 2005-04-28 | 2006-11-01 | 伊利诺斯器械工程公司 | Body mount assembly |
| CN101049812A (en) * | 2006-04-05 | 2007-10-10 | 福特全球技术公司 | Shock-absorbing system |
| CN201604696U (en) * | 2009-12-11 | 2010-10-13 | 天台县三力汽车配件有限公司 | Bushing assembly |
| CN102069851A (en) * | 2010-12-31 | 2011-05-25 | 东莞市永强汽车制造有限公司 | Elastic connecting seat for connecting carriage and auxiliary frame |
-
2013
- 2013-03-25 CN CN201310097336.XA patent/CN103523091A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6095481A (en) * | 1999-05-07 | 2000-08-01 | Illinois Tool Works, Inc. | Breakaway shock isolating mount |
| CN1854006A (en) * | 2005-04-28 | 2006-11-01 | 伊利诺斯器械工程公司 | Body mount assembly |
| CN101049812A (en) * | 2006-04-05 | 2007-10-10 | 福特全球技术公司 | Shock-absorbing system |
| CN201604696U (en) * | 2009-12-11 | 2010-10-13 | 天台县三力汽车配件有限公司 | Bushing assembly |
| CN102069851A (en) * | 2010-12-31 | 2011-05-25 | 东莞市永强汽车制造有限公司 | Elastic connecting seat for connecting carriage and auxiliary frame |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140122 |