CN104309409A - Automobile rear axle case - Google Patents
Automobile rear axle case Download PDFInfo
- Publication number
- CN104309409A CN104309409A CN201410512223.6A CN201410512223A CN104309409A CN 104309409 A CN104309409 A CN 104309409A CN 201410512223 A CN201410512223 A CN 201410512223A CN 104309409 A CN104309409 A CN 104309409A
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- CN
- China
- Prior art keywords
- bonnet
- axle case
- rear cover
- axle
- case assy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Body Structure For Vehicles (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention relates to an automobile rear axle case, which comprises an axle case assembly and a rear cover, wherein the rear cover is a whole and is in a rhombic shape, the middle part of the rear cover is outwards projected, the rear cover is connected with the axle case assembly, and a diagonal line of two smaller inner corners of the rear cover is parallel to the axial line of the axle case assembly. A round rear cover and two back reinforcing plates in the prior art are integrated into one rhombic rear cover, the rear axle part number is reduced, one punching forming element is adopted for replacing the use performance of three parts, the manufacturing work procedures are reduced, the production cost is reduced, the structure rigidity of the axle case and the X-direction bending mode are improved, the resonance frequency domain is avoided, and the NVH (noise vibration and harshness) quality of a whole automobile is improved.
Description
Technical field
The present invention relates to technical field of automobile parts, be specifically related to a kind of vehicle rear-axle housing.
Background technology
As shown in Figure 1, circular bonnet 1 welds with axle case assy 3, makes back axle form hermetically-sealed construction, prevents gear oil from flowing out axle housing, causes gear and bearing lubrication deficiency, occurs ablation, the phenomenons such as clamping stagnation, affect the service life of back axle; Rear brace panel 2 welds with circular bonnet 1, axle case assy 3 respectively, back axle X-direction mode can be strengthened, avoid resonance of the car frequency domain, improve car load NVH (english abbreviation of noise, vibration and sound vibration roughness is a global question of measurement Automobile manufacturing quality) quality.
This scheme needs welding more, need by manual welding, and technological requirement is high, weldquality poor stability, the circular bonnet 1 (circular bonnet wall thickness 2.5mm) of easy through welding, in road examination proof procedure, brace panel 2 and circular bonnet 1 weld seam oil leakage phenomenon after occurring.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the invention provides a kind of vehicle rear-axle housing, to solve the problem of bonnet and axle case assy poor sealing performance and weldquality poor stability in prior art.
In order to achieve the above object, the present invention adopts following technical scheme.
A kind of vehicle rear-axle housing, comprises axle case assy and bonnet, and described bonnet is as a whole and be rhombus, and intermediate portion outwardly convex; Described bonnet is connected with described axle case assy, the diagonal line of two less interior angles of described bonnet and the axis being parallel of described axle case assy.The bonnet of described rhombus instead of circular bonnet of the prior art and rear brace panel, and has gathered both functions: sealing and raising X-direction mode of flexural vibration; Avoid circular bonnet in prior art simultaneously and caused the risk of leakage of oil by through welding.
Further, the edge of described bonnet is turnup structure.Adopt turnup structure to be conducive to described bonnet to be connected with described axle case assy.
Further, the flange part of described bonnet is welded by machine with described axle case assy.In this way, the leak tightness of welding can be made more good, avoid the risk of leakage of oil.
Further, the flange width of described bonnet is 4mm-8mm, so that welding, avoids welding heat to affect bonnet described in part.
Further, the wall thickness of described axle case assy is 4mm-6mm.The risk adopting this thickness to reduce described bonnet and described axle case assy through welding in welding process to cause leakage of oil.
Further, the wall thickness of described bonnet and flange is 4mm-6mm, both ensure that stamping forming convenience, also ensure that rigidity and the intensity of described bonnet, meets best cost requirement.
Compared with prior art, vehicle rear-axle housing provided by the invention, brace panel after circular bonnet of the prior art and two is integrated into a part, decrease the quantity of back axle part, adopt one and strike out the in-use performance that shaped piece substitutes three parts, shorten Fabrication procedure, reduce productive costs; Improve axle housing structure rigidity and X-direction mode of flexural vibration, avoid resonance frequency territory, improve car load NVH quality; Avoid the circular bonnet of thin-walled in prior art and caused the risk of leakage of oil by through welding; In addition, this rhombus rear cover structure rule, weld seam quantity obviously reduces, and changes robot welding into simultaneously, improve the stability of weldquality by manual welding.
Accompanying drawing explanation
Fig. 1 is the structural representation of vehicle rear-axle housing of the prior art.
Fig. 2 is the structural representation of vehicle rear-axle housing provided by the invention.
Fig. 3 is the bonnet block diagram of vehicle rear-axle housing provided by the invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As shown in Figure 2, a kind of vehicle rear-axle housing, comprises axle case assy 3 and bonnet 4, and described bonnet 4 is as a whole and be rhombus, and intermediate portion outwardly convex, define a cavity; Described bonnet 4 is connected with described axle case assy 3, the diagonal line of two less interior angles of described bonnet 4 and the axis being parallel of described axle case assy 3.Described bonnet 4 centre portion is protruding to the reversing sense of axle case assy 3, and this projection is made up of multiple inclined-plane around the curved surface of an outwardly convex of described bonnet center and this curved surface.
As shown in Figure 1, compared with prior art, the bonnet 4 of described rhombus is the part that after circular bonnet 1 of the prior art and two, brace panel 2 is integrated, the bonnet 4 of described rhombus instead of circular bonnet 1, bonnet 4 and the axle case assy 3 of described rhombus are connected to form confined space, thus play sealing function; The bonnet 4 of described rhombus instead of rear brace panel 2 simultaneously, in the bending resistant section coefficient ratio prior art of the X-direction of the bonnet 4 of described rhombus, three welded coefficients of framing member are large, so rigidity is large, improve mode of flexural vibration, avoid resonance frequency territory simultaneously, improve the NVH quality of car load, it also avoid and occur that in prior art, circular cover 1 is caused the risk of leakage of oil by through welding.
As shown in Figure 2 and Figure 3, preferably, the edge of described bonnet 4 is flange 5 structure.Adopt flange 5 structure to be conducive to described bonnet 4 to be connected with described axle case assy 3.
In actual production process, due to the poor stability of human weld's weldquality, so in the present embodiment, flange 5 part of described bonnet 4 is welded by machine with described axle case assy 3.Because bonnet 4 tactical rule of rhombus provided by the invention, weld seam quantity also reduces, so preferably adopt robot welding in this embodiment, improves the stability of weldquality, guarantees the quality sealed.
For the ease of welding and cost-saving, the width of the flange 5 of described bonnet 4 can be 4mm-8mm, and flange 5 width of described bonnet 4 is preferably 6mm in the present embodiment.Adopt this width that machine can be made to weld comparatively convenient, also can avoid bonnet 4 described in the heat effects of welding simultaneously, make it be out of shape or occur damage.
The wall thickness of described axle case assy (3) can be 4mm-6mm, may by axle case assy 3 through welding when considering that bonnet 4 welds with axle case assy 3, cause leakage of oil, in the present embodiment, the wall thickness of axle case assy 3 is preferably designed to 5mm, and when greatly reducing welding, through welding causes the risk of leakage of oil.In addition, described bonnet (4) all can be 4mm-6mm with the wall thickness of flange (5), in the present embodiment, described bonnet 4 is preferably all designed to 5mm with the wall thickness of flange 5, both ensure that stamping forming convenience, also ensure that rigidity and the intensity of described bonnet 4, meet best cost requirement.
In sum, compared with prior art, vehicle rear-axle housing provided by the invention, brace panel 2 after circular bonnet 1 of the prior art and two is integrated into the bonnet 4 of a rhombus, decrease the quantity of back axle part, adopt one and strike out the in-use performance that shaped piece substitutes three parts, shorten Fabrication procedure, reduce productive costs; Improve axle housing structure rigidity and X-direction mode of flexural vibration, avoid resonance frequency territory, improve car load NVH quality; Avoid the circular bonnet 1 of thin-walled in prior art and caused the risk of leakage of oil by through welding; In addition, this rhombus bonnet 4 tactical rule, weld seam quantity obviously reduces, and changes robot welding into simultaneously, improve the stability of weldquality by manual welding.
Above content is in conjunction with concrete preferred implementation to the further description done by the present invention, can not assert that specific embodiment of the invention is only limited to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (6)
1. a vehicle rear-axle housing, is characterized in that, comprises axle case assy (3) and bonnet (4), and described bonnet (4) is as a whole and be rhombus, and intermediate portion outwardly convex; Described bonnet (4) is connected with described axle case assy (3), the diagonal line of two less interior angles of described bonnet (4) and the axis being parallel of described axle case assy (3).
2. vehicle rear-axle housing according to claim 1, is characterized in that, the edge of described bonnet (4) is flange (5) structure.
3. vehicle rear-axle housing according to claim 2, is characterized in that, flange (5) part of described bonnet (4) is welded by machine with described axle case assy (3).
4., according to the arbitrary described vehicle rear-axle housing of Claims 2 or 3, it is characterized in that, flange (5) width of described bonnet (4) is 4mm-8mm.
5. vehicle rear-axle housing according to claim 1, is characterized in that, the wall thickness of described axle case assy (3) is 4mm-6mm.
6. vehicle rear-axle housing according to claim 1, is characterized in that, described bonnet (4) is 4mm-6mm with the wall thickness of flange (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410512223.6A CN104309409A (en) | 2014-09-29 | 2014-09-29 | Automobile rear axle case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410512223.6A CN104309409A (en) | 2014-09-29 | 2014-09-29 | Automobile rear axle case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104309409A true CN104309409A (en) | 2015-01-28 |
Family
ID=52364783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410512223.6A Pending CN104309409A (en) | 2014-09-29 | 2014-09-29 | Automobile rear axle case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104309409A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1398732A (en) * | 2001-07-23 | 2003-02-26 | 丰田自动车株式会社 | Shaft casing and its production process |
| CN200995590Y (en) * | 2006-12-22 | 2007-12-26 | 辽宁曙光汽车集团股份有限公司 | Light-motor driving bridge with integrated ram welding bridging case |
| CN201442490U (en) * | 2009-05-20 | 2010-04-28 | 烟台嘉华车辆部件有限公司 | Rear axle housing welded assembly of golf cart |
| JP2011218855A (en) * | 2010-04-05 | 2011-11-04 | Nippon Steel Corp | Axle housing |
| CN202557219U (en) * | 2012-05-03 | 2012-11-28 | 中国长安汽车集团股份有限公司四川建安车桥分公司 | Axle casing middle section reinforcing plate structure for automobile rear axle |
| CN202944155U (en) * | 2012-11-20 | 2013-05-22 | 柳州五菱汽车有限责任公司 | Axle housing assembly |
| CN104063549A (en) * | 2014-07-02 | 2014-09-24 | 湖南大学 | Method for matching power system and drive system based on vibration performance |
| CN204196592U (en) * | 2014-09-29 | 2015-03-11 | 上汽通用五菱汽车股份有限公司 | A kind of vehicle rear-axle housing |
-
2014
- 2014-09-29 CN CN201410512223.6A patent/CN104309409A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1398732A (en) * | 2001-07-23 | 2003-02-26 | 丰田自动车株式会社 | Shaft casing and its production process |
| CN200995590Y (en) * | 2006-12-22 | 2007-12-26 | 辽宁曙光汽车集团股份有限公司 | Light-motor driving bridge with integrated ram welding bridging case |
| CN201442490U (en) * | 2009-05-20 | 2010-04-28 | 烟台嘉华车辆部件有限公司 | Rear axle housing welded assembly of golf cart |
| JP2011218855A (en) * | 2010-04-05 | 2011-11-04 | Nippon Steel Corp | Axle housing |
| CN202557219U (en) * | 2012-05-03 | 2012-11-28 | 中国长安汽车集团股份有限公司四川建安车桥分公司 | Axle casing middle section reinforcing plate structure for automobile rear axle |
| CN202944155U (en) * | 2012-11-20 | 2013-05-22 | 柳州五菱汽车有限责任公司 | Axle housing assembly |
| CN104063549A (en) * | 2014-07-02 | 2014-09-24 | 湖南大学 | Method for matching power system and drive system based on vibration performance |
| CN204196592U (en) * | 2014-09-29 | 2015-03-11 | 上汽通用五菱汽车股份有限公司 | A kind of vehicle rear-axle housing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150128 |
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| RJ01 | Rejection of invention patent application after publication |