CN104590378A - Front sub-frame and automobile - Google Patents
Front sub-frame and automobile Download PDFInfo
- Publication number
- CN104590378A CN104590378A CN201510052109.4A CN201510052109A CN104590378A CN 104590378 A CN104590378 A CN 104590378A CN 201510052109 A CN201510052109 A CN 201510052109A CN 104590378 A CN104590378 A CN 104590378A
- Authority
- CN
- China
- Prior art keywords
- sub frame
- parts
- fore sub
- crossbeam
- cross beams
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a front sub-frame and an automobile. The front sub-frame comprises two longitudinal arms and cross beams, wherein the two longitudinal arms are oppositely arranged; the cross beams are connected with the two longitudinal arms and comprise first parts, third parts and second parts; the two ends of the first parts are connected with the longitudinal arms; the third parts are positioned on the middle parts; the second parts are connected with the first parts and the third parts; the section factors of the first parts, the second parts and the third parts are reduced in sequence. According to the front sub-frame, when the cross beams are stressed by acting force from a spiral spring of a body, the parts, close to the longitudinal arms, of the two ends of the cross beams are stressed by a larger bending moment effect, and the middle parts are stressed by smaller bending moment; since the section factor of the cross beams is reduced from the two ends to the middle parts in sequence, the stress change born by the cross beams is adapted better. Thus, compared with a straight beam with a uniform section in the prior art, front sub-frame has the advantages that the amount of steel used by the middle parts of the cross beams is less than the amount of steel used by the two ends, so that the amount of used steel is saved on the premise that the stress requirement of the cross beams is guaranteed.
Description
Technical field
The present invention relates to automotive technology, be specifically related to a kind of fore sub frame and automobile.
Background technology
Fore sub frame is the load bearing component of automobile front axle, the top of fore sub frame connects vehicle body and the load of vehicle front axle, the bottom of fore sub frame is connected, for these component set being become a branch unit to be connected with vehicle body with suspension, wheel and stationary deflector etc.
Fig. 1 is the structural representation of fore sub frame in prior art, as shown in Figure 1, fore sub frame comprises two trailing arms be oppositely arranged 11 and the crossbeam 12 being connected two trailing arms 11, and fore sub frame is generally provided with two or more crossbeam 12, the uniform cross section straight beam that each crossbeam 12 is selected usually.
In prior art, crossbeam generally selects prismatic straight beam, and in order to ensure the mechanical property of crossbeam 12, the requirement of equal cross section straight beam is: when crossbeam 12 is subject to maximum engineering stress, and the most weakness of crossbeam 12 is also unlikely to damage.In actual applications, when being subject to design maximum stress, each several part stress on the crossbeam 12 and moment of flexure be subject to is different, namely the structural strength that crossbeam 12 each several part is required when tackling maximum stress is in fact different, and intensity is everywhere substantially identical on uniform cross section straight beam, the intensity at crossbeam 12 upper part position like this is much larger than the intensity of actual needs, its rolled steel dosage is also significantly higher than the real rolled steel dosage needed simultaneously, this adds the rolled steel dosage of crossbeam 12 on the one hand, result also in the weight penalty of car load on the other hand.
Prior art:
11, trailing arm; 12, crossbeam.
The present invention:
21, trailing arm; 211, straight-arm; 212, reinforced support; 213, connection pipe; 214, brace panel; 22, crossbeam; 221, first; 222, second; 223, the 3rd; 224, reinforced rib; 225, inverted U-shaped plate; 226, dull and stereotyped; 23, lower swing arm mounting bracket.
Summary of the invention
The object of this invention is to provide a kind of fore sub frame and automobile, to solve the too much technical matters of prior art center member steel used.
To achieve these goals, the invention provides following technical scheme:
A kind of fore sub frame, comprise two trailing arms be oppositely arranged and the crossbeam connecting two described trailing arms, described crossbeam comprises be positioned at that two ends are connected with described trailing arm first, be positioned at the 3rd of middle part and be connected described first and the 3rd second, and described crossbeam reduces from described first successively to described 3rd section factor.
Above-mentioned fore sub frame, described 3rd section factor relative to described second reduces amplitude and is greater than described second section factor relative to described first and reduces amplitude.
Above-mentioned fore sub frame, described second is groove.
Above-mentioned fore sub frame, is provided with reinforced rib in described groove.
Above-mentioned fore sub frame, on the fore-and-aft direction of automobile, the end face of described 3rd comprises connected horizontal part and rake.
Above-mentioned fore sub frame, described crossbeam comprises inverted U-shaped plate and is arranged at the flat board of described inverted U-shaped plate open end.
Above-mentioned fore sub frame, described trailing arm is provided with lower swing arm mounting bracket, the outside being centrally located at described fore sub frame of described lower swing arm mounting bracket.
Described trailing arm comprises connected straight-arm and reinforced support, and described first is connected with described reinforced support.
A kind of automobile, comprises fore sub frame, the fore sub frame that described fore sub frame is above-mentioned.
In technique scheme, fore sub frame provided by the invention, crossbeam is when being subject to the flexure stress from two ends trailing arm, according to strength of material, crossbeam two ends are subject to larger Moment from the position close to trailing arm, the moment of flexure that centre portion is subject to is then less, because the section factor of crossbeam provided by the invention reduces from both ends to the middle successively, better has adapted to the STRESS VARIATION that crossbeam bears.So, prismatic straight beam compared to existing technology, crossbeam middle part steel material used is just less than two ends steel material used, and this just saves steel using amount under the prerequisite of stressed demand that ensure that crossbeam.
Because above-mentioned fore sub frame has above-mentioned technique effect, the automobile comprising this fore sub frame also should have corresponding technique effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of fore sub frame in prior art;
The structural representation of the fore sub frame that Fig. 2 provides for the embodiment of the present invention;
The upward view of the fore sub frame that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is the section-drawing of A-A in Fig. 3;
Fig. 5 is the section-drawing of B-B in Fig. 3;
Fig. 6 is the section-drawing of C-C in Fig. 3;
Fig. 7 is the section-drawing of D-D in Fig. 3;
Fig. 8 is the section-drawing of E-E in Fig. 3.
Description of reference numerals:
Detailed description of the invention
In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with accompanying drawing, the present invention is further detailed.
As illustrated in figs. 2 through 8, a kind of fore sub frame that the embodiment of the present invention provides, comprise two trailing arms 21 be oppositely arranged and the crossbeam 22 connecting two trailing arms 21, crossbeam 22 comprises be positioned at that two ends and trailing arm 21 be connected first 221, be positioned at the 3rd 223 of middle part and be connected second 222 of first 221 and the 3rd 223, and the section factor of first 221, second the 222, the 3rd 223 reduces successively.
Concrete, section factor is also known as section modulus, it is one of geometry parameter of engineering mechanics, in the present embodiment, crossbeam 22 has maximum section factor for first 221 of being connected with trailing arm 21, crossbeam 22 has minimum section factor away from the 3rd 223 that is connected with trailing arm 21, reduces successively from the remainder section factor of first 221 to the three 223.So, at crossbeam 22 when being subject to the flexure stress from the trailing arm 21 at two ends, according to the engineering mechanics knowledge of moment of flexure and flexure stress, crossbeam 22 two ends are subject to larger Moment from position close to trailing arm 21, the moment of flexure that centre portion is subject to is then less, because the section factor of crossbeam 22 of the present invention reduces from both ends to the middle successively, the better STRESS VARIATION having adapted to crossbeam 22 and born.Prismatic straight beam compared to existing technology, the present embodiment center member 22 centre portion the 3rd 223 first 221 materials relative to both sides are less, and this just saves steel using amount under the prerequisite of stressed demand that ensure that crossbeam 22.
The relation of section factor, moment of flexure and flexure stress and calculating thereof are all the prior art of strength of material, and the present embodiment does not specifically calculate above-mentioned parameter, hereinafter relate to these parts calculated and all make same treatment.
In the present embodiment, further, the 3rd the 223 section factor reduction amplitude relative to second 222 is greater than second the 222 section factor reduction amplitude relative to first 221.According to Such analysis, in the ideal case, from the section factor of first of two ends 221 to middle 3rd 223 on crossbeam 22, the speed that its amplitude declines should be identical, so, when crossbeam 22 is subject to maximum default stress, each several part of crossbeam 22 is subject to maximal bending moment simultaneously, and the intensity of crossbeam 22 each several part should be able to bear this moment of flexure stress just.In the present embodiment, section factor due to the 3rd 223 regions reduces the section factor reduction amplitude that amplitude is greater than other regions, so when vehicle is subject to super default large impact power (as collided), the 3rd 223 of crossbeam 22 will be out of shape in advance, such one side is the just pre-aligned position of vehicle deformation, can based on this design safety measure; On the other hand further, structure can be replied in this zone design of crossbeam 22, as by this partial design of crossbeam 22 for having elastomeric arcuate structure etc., make it have when the distortion of slight amount and automatically reply function, compared to existing technology, this design of permanent deformation of straight beam has significant advantage.
In the present embodiment, preferably, second 222 is groove.Reinforced rib 224 is provided with in groove.Second 222 is arranged reinforcement structure, strengthen this field strength further, prevent this region from deforming.
In the present embodiment, as shown in Figure 6, preferably, on the fore-and-aft direction of automobile, the end face of the 3rd 223 comprises connected horizontal part and rake.Under second 222 and the 3rd 223 entirety are probably the prerequisite of straight-arm, the section factor that a rake reduces the 3rd 223 is set.
In the present embodiment, as shown in Figure 5, preferably, crossbeam 22 comprises inverted U-shaped plate 225 and is arranged at the flat board 226 of inverted U-shaped plate 225 open end.Dull and stereotyped 226 to refer to be the sheet material of smooth shape on the whole, allows its surface to have undersized kink and gauffer, at the open end welding plate 226 of inverted U-shaped plate 225 to strengthen the structural strength of inverted U-shaped plate 225.
In the present embodiment, further, trailing arm 21 is provided with lower swing arm mounting bracket 23, the outside being centrally located at fore sub frame of lower swing arm mounting bracket 23.Vehicle can cause the resonance of section components in the process of moving, and in the present embodiment, the arrangement form of lower swing arm mounting bracket 23, verifies by experiment, and spring when can effectively reduce the 40km/h ridden in left or right direction speed even eliminating vehicle resonates.
In the present embodiment, further, trailing arm 21 comprises connected straight-arm 211 and reinforced support 212, first 221 is connected with reinforced support 212.By reinforced support 212 strengthen on trailing arm 21 for crossbeam 22 first 221 positions be connected, as shown in Figure 7, trailing arm 21 comprises straight-arm 211 and reinforced support 212, the section factor of reinforced support 212 is greater than straight-arm 211, one end of reinforced support 212 holds straight-arm 211, and welded with straight-arm 211 by a connection pipe 213, the other end of reinforced support 212 arranges a brace panel 214, be connected with brace panel 214 by a connection pipe 213 equally, add the Joint strenght of trailing arm 21 and crossbeam 22 so greatly.General, in order to ensure structural strength, fore sub frame needs the crossbeam 22 of two or more, in the present embodiment, by the optimization of crossbeam 22 section factor and trailing arm 21 and the increase of crossbeam 22 junction intensity, only can arrange a crossbeam 22.
This enforcement also provides a kind of automobile, uses above-mentioned fore sub frame.
Because above-mentioned fore sub frame has above-mentioned technique effect, the automobile comprising this fore sub frame also should have corresponding technique effect.
Mode above only by illustrating describes some one exemplary embodiment of the present invention, undoubtedly, for those of ordinary skill in the art, when without departing from the spirit and scope of the present invention, can revise described embodiment by various different mode.Therefore, above-mentioned accompanying drawing is illustrative with being described in essence, should not be construed as the restriction to the claims in the present invention protection domain.
Claims (9)
1. a fore sub frame, comprise two trailing arms be oppositely arranged and the crossbeam connecting two described trailing arms, it is characterized in that, described crossbeam comprises be positioned at that two ends are connected with described trailing arm first, be positioned at the 3rd of middle part and be connected described first and described 3rd second, and described crossbeam reduces from described first successively to described 3rd section factor.
2. fore sub frame according to claim 1, is characterized in that, described 3rd section factor relative to described second reduces amplitude and is greater than described second section factor relative to described first and reduces amplitude.
3. fore sub frame according to claim 1, is characterized in that, described second is groove.
4. fore sub frame according to claim 3, is characterized in that, is provided with reinforced rib in described groove.
5. fore sub frame according to claim 1, is characterized in that, on the fore-and-aft direction of automobile, the end face of described 3rd comprises connected horizontal part and rake.
6. fore sub frame according to claim 1, is characterized in that, described crossbeam comprises inverted U-shaped plate and is arranged at the flat board of described inverted U-shaped plate open end.
7. fore sub frame according to claim 1, is characterized in that, described trailing arm is provided with lower swing arm mounting bracket, the outside being centrally located at described fore sub frame of described lower swing arm mounting bracket.
8. the fore sub frame according to any one of claim 1-7, is characterized in that, described trailing arm comprises connected straight-arm and reinforced support, and described first is connected with described reinforced support.
9. an automobile, comprises fore sub frame, it is characterized in that, described fore sub frame is the fore sub frame described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052109.4A CN104590378B (en) | 2015-01-30 | 2015-01-30 | Fore sub frame and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052109.4A CN104590378B (en) | 2015-01-30 | 2015-01-30 | Fore sub frame and automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104590378A true CN104590378A (en) | 2015-05-06 |
| CN104590378B CN104590378B (en) | 2018-06-05 |
Family
ID=53116531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510052109.4A Expired - Fee Related CN104590378B (en) | 2015-01-30 | 2015-01-30 | Fore sub frame and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104590378B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63106121A (en) * | 1986-10-23 | 1988-05-11 | Nissan Motor Co Ltd | Transverse link attaching structure for front suspension |
| DE19536460A1 (en) * | 1994-09-29 | 1996-04-04 | Honda Motor Co Ltd | Subframe for mounting engine in vehicle body |
| EP1686042A1 (en) * | 2004-03-31 | 2006-08-02 | HONDA MOTOR CO., Ltd. | Subframe for vehicle, and bush installation structure |
| US20060284449A1 (en) * | 2005-06-17 | 2006-12-21 | Honda Motor Co., Ltd. | Sub-frame of vehicle |
| WO2013053469A1 (en) * | 2011-10-14 | 2013-04-18 | Audi Ag | Subframe for motor vehicles |
| KR101295089B1 (en) * | 2011-10-20 | 2013-08-09 | 기아자동차주식회사 | Assembly structure of mout and subframe |
| CN103387007A (en) * | 2012-05-10 | 2013-11-13 | 奥迪股份公司 | Axle beam support device on a vehicle, in particular on a motor vehicle |
| CN204399285U (en) * | 2015-01-30 | 2015-06-17 | 安徽江淮汽车股份有限公司 | Fore sub frame and automobile |
-
2015
- 2015-01-30 CN CN201510052109.4A patent/CN104590378B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63106121A (en) * | 1986-10-23 | 1988-05-11 | Nissan Motor Co Ltd | Transverse link attaching structure for front suspension |
| DE19536460A1 (en) * | 1994-09-29 | 1996-04-04 | Honda Motor Co Ltd | Subframe for mounting engine in vehicle body |
| EP1686042A1 (en) * | 2004-03-31 | 2006-08-02 | HONDA MOTOR CO., Ltd. | Subframe for vehicle, and bush installation structure |
| US20060284449A1 (en) * | 2005-06-17 | 2006-12-21 | Honda Motor Co., Ltd. | Sub-frame of vehicle |
| WO2013053469A1 (en) * | 2011-10-14 | 2013-04-18 | Audi Ag | Subframe for motor vehicles |
| KR101295089B1 (en) * | 2011-10-20 | 2013-08-09 | 기아자동차주식회사 | Assembly structure of mout and subframe |
| CN103387007A (en) * | 2012-05-10 | 2013-11-13 | 奥迪股份公司 | Axle beam support device on a vehicle, in particular on a motor vehicle |
| CN204399285U (en) * | 2015-01-30 | 2015-06-17 | 安徽江淮汽车股份有限公司 | Fore sub frame and automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104590378B (en) | 2018-06-05 |
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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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: ANHUI JIANGHUAI AUTOMOBILE GROUP Corp.,Ltd. Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: ANHUI JIANGHUAI AUTOMOBILE Co.,Ltd. |
|
| GR01 | Patent grant | ||
| 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: 20180605 |