CN201784680U - Stepped front longitudinal beam - Google Patents
Stepped front longitudinal beam Download PDFInfo
- Publication number
- CN201784680U CN201784680U CN201020234587XU CN201020234587U CN201784680U CN 201784680 U CN201784680 U CN 201784680U CN 201020234587X U CN201020234587X U CN 201020234587XU CN 201020234587 U CN201020234587 U CN 201020234587U CN 201784680 U CN201784680 U CN 201784680U
- Authority
- CN
- China
- Prior art keywords
- longitudinal beam
- front side
- side member
- front longitudinal
- section
- 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.)
- Expired - Lifetime
Links
- 238000005457 optimization Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000001808 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
The utility model relates to a stepped front longitudinal beam. The front longitudinal beam comprises a closed cavity structure welded by a body plate of the front longitudinal beam and an outer plate of the front longitudinal beam; the whole front longitudinal beam is step-shaped and provided with a gradual-change cross section; the front-end cross section of the front longitudinal beam is small in size, and the back-end cross section of the front longitudinal beam is large in size; and a smooth transition area is formed at the central part from the front-end cross section to the back-end cross section of the front longitudinal beam. Through a structural optimization design, the front longitudinal beam provided by the utility model adopts the stepped front longitudinal beam structure, and reasonably distributes the stiffness of the front longitudinal beam on the basis of guaranteeing low cost and the manufacturability, thereby greatly reducing the stiffness matching difficulty of the front longitudinal beam structure, effectively absorbing the impact energy during whole vehicle high-speed collision, and improving the automotive frontal collision performance; and furthermore, the deformation mode of the front longitudinal beam is steady and controllable during collision.
Description
Technical field
The utility model belongs to the automotive body structure field, particularly the girder work of car.
Background technology
Along with the enforcement of Chinese new car safety assessment standard C-NCAP, people have higher requirement to the protection of occupant in the car load head-on crash to the continuous concern and the cognition of vehicle safety performance.Especially in the passive security technology, need integration body drawing, the application of high strength steel material to become multinomial contents such as system with constraint set.The body structure of safety is automotive safety design-calculated basis, is the precondition of constrained system coupling.Reasonably body structure and rigidity can be guaranteed that car load can have reasonable energy in the Collision test and absorbs and deformation pattern, make other safety measure such as air bag, gas curtain, safety strap etc. can match could the better protection occupant safety.Thereby, front side member must form best coupling with complete vehicle structure rigidity as the main body structural member in the car load head-on crash safety, could guarantee to absorb to greatest extent when collision impact energy, reduce crew module's distortion, for people enjoyment control happy the time safe guarantee is provided.At present, car is in design, and the front side member that has adopts the bending energy-absorbing principle design to become S shape, and the axial collapse energy-absorption principle design of the employing that has becomes Y shape, and above structure deformation pattern in high-speed crash is difficult to control; The application of modern laser welding technology makes front side member can be designed to different-thickness, make longeron rear end rigidity be higher than front end, but the laser assembly solder technical costs is too high, is unfavorable for popularizing.
Notification number is that the Chinese patent of CN 101367410A discloses a kind of front stringpiece of vehicle body, comprise the front side member that links to each other with automobile front beam anterior and with automobile front baffle board bonded assembly front side member rear portion, connecting described front side member attaching parts anterior and described front side member rear portion is three groove shapes, the one end has and the interface of the anterior welding of front side member, the other end have with the interface of front side member rear portion welding and with the interface of front apron center member.Adopting this structure, is to dodge the structural mutation that change-speed box causes though improved front side member, has reduced the curvature of front side member middle bent, and the stress concentration of having avoided having punching press to cause herein serious wrinkling and that cause thus causes problems such as intensity reduction.But, when vehicle acutely clashes into, the attaching parts fracture of front side member front and rear part may occur connecting, the intensity sudden change appears in the vehicle body in the attaching parts present position like this, is jumping characteristic, cause when collision, bus body strength is not enough herein, and directly crumple has little time the energy dispersion is directly affacted vehicle body, damage rate to vehicle body is big, and occupant's safety is caused certain danger side of body.
The content of utility model
The purpose of this utility model is by Optimal Structure Designing, adopt the staged front rail structure, guaranteeing on low-cost and the technological basis, the rigidity of reasonable distribution front side member, make the Rigidity Matching difficulty of front rail structure significantly reduce, in the car load high-speed crash, can absorb impact energy by actv., thereby improve the frontal crash of vehicles performance.
The technical solution of the utility model is: a kind of staged front side member, comprise the enclosed cavity structure that this plate of front side member and front side member outside plate are welded into, the whole stepped gradually changing cross section that has of described front side member, the front end sectional dimension of front side member is less, and the rear end sectional dimension of front side member is bigger.By making front side member whole stepped and the gradual change cross section arranged, soft back is hard before making front side member, intensity increases gradually, during collision, front side member begins crumple gradually from front end, consumes collision energy, makes front side member become the main absorption cell of auto against, the final energy that is delivered to vehicle body that reduces, assurance occupant's safety.
As preferably, described front side member end section in the past is the smooth transition zone to the back centre portion of end section.Transitional region is set, makes the preceding end section and the back end section of front side member, obvious variation is arranged, make the front side member integral structure can guarantee not interfere with engine assembly, bumper and tire envelope in this zone.And, transitional region is set, make front side member anterior to the smooth-going transition of rear portion energy, making whole front side member suffered impulsive force when bump be incremental changes, rather than the great-jump-forward sudden change, more failure-free ensures that auto body is not subjected to too big destruction, the safety that has improved vehicle in collision.
As preferably, described front side member interior welds has reinforced rib, reinforced rib spacing reduce gradually to the front side member rear end by the front side member front end.The ability that raising front side member collision energy-absorbing is set of reinforced rib has adopted descending optimal design to the spacing between the reinforced rib, makes front side member when collision, and the energy absorption ability from the front end to the rear end increases, and distortion diminishes gradually.So not only can play good energy-absorbing effect and also reduce the destruction of causing, improve the vehicle body safety because of collision.
As preferably, described front side member has one side whole straight.Whole when straight when front side member one side, its deformation pattern is more stable controlled, and front side member is also apparent in view to the effect of high-speed crash energy absorbing simultaneously.
The beneficial effects of the utility model are: by Optimal Structure Designing, adopt the staged front rail structure, guaranteeing on low-cost and the technological basis, the rigidity of reasonable distribution front side member, make the Rigidity Matching difficulty of front rail structure significantly reduce, can actv. in the car load high-speed crash absorb impact energy, thereby improve the frontal crash of vehicles performance, and its deformation pattern is more stable controlled during the front side member collision.
Description of drawings
Fig. 1 is a front side member block diagram of the present utility model;
Fig. 2 is a front side member birds-eye view of the present utility model;
Fig. 3 is a front side member front elevation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.As shown in Figure 1, a kind of staged front side member comprises the enclosed cavity structure that this plate of front side member and front side member outside plate are welded into, the whole stepped gradually changing cross section that has of described front side member, the front end section A size of front side member is less, the back end section B size of front side member is bigger, the zone C of smooth transition is arranged between section A and the cross section B, and a straight face 11 is arranged on the front side member.As shown in Figure 2, front side member is overlooked direction formation ladder 1; As shown in Figure 3, front side member forms ladder 2 aspect forward sight.The section A size is less, its intensity ratio is less, cross section B size is bigger, and its intensity ratio is bigger, between zone C by smooth transition, the intensity of front side member is increased gradually, when making bump, the impulsive force incremental that vehicle is subjected to changes, and can not produce sudden change, and whole front side member is simple in structure, easy to manufacture.The front side member interior welds has reinforced rib, and reinforced rib is welded on this plate of front side member, reinforced rib spacing reduce gradually to the back-end by the front side member front end.Make front side member when collision, the energy absorption ability from the front end to the rear end increases, and distortion diminishes gradually.Have a face 11 straight on the front side member, its deformation pattern is more stable controlled in the time of can making the front side member collision, makes front side member obvious to the effect of high-speed crash energy absorbing simultaneously.
Claims (4)
1. staged front side member, comprise the enclosed cavity structure that this plate of front side member and front side member outside plate are welded into, it is characterized in that, the whole stepped gradually changing cross section that has of described front side member, preceding end section (A) size of front side member is less, and back end section (B) size of front side member is bigger.
2. a kind of staged front side member according to claim 1 is characterized in that: the zone (C) that smooth transition is arranged between end section (A) and the back end section (B) before described.
3. a kind of staged front side member according to claim 1 is characterized in that: described front side member interior welds has reinforced rib, reinforced rib spacing reduce gradually to the front side member rear end from the front side member front end.
4. a kind of staged front side member according to claim 1 and 2 is characterized in that: have one side (11) whole straight on the described front side member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020234587XU CN201784680U (en) | 2010-06-23 | 2010-06-23 | Stepped front longitudinal beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020234587XU CN201784680U (en) | 2010-06-23 | 2010-06-23 | Stepped front longitudinal beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201784680U true CN201784680U (en) | 2011-04-06 |
Family
ID=43816657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020234587XU Expired - Lifetime CN201784680U (en) | 2010-06-23 | 2010-06-23 | Stepped front longitudinal beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201784680U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615483A (en) * | 2012-04-25 | 2012-08-01 | 江铃汽车股份有限公司 | Process for forming inner automobile longeron plate and outer automobile longeron plate at the same time |
| CN103600773A (en) * | 2013-10-30 | 2014-02-26 | 奇瑞汽车股份有限公司 | Continuous variable cross-section car front longitudinal beam and preparation method thereof |
| CN104648476A (en) * | 2015-02-11 | 2015-05-27 | 郑州比克新能源汽车有限公司 | Front longitudinal beam back segment structure for electric automobile |
| CN109421801A (en) * | 2017-08-24 | 2019-03-05 | 江苏锋驰汽车车身制造有限公司 | A kind of high intensity body structure |
-
2010
- 2010-06-23 CN CN201020234587XU patent/CN201784680U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615483A (en) * | 2012-04-25 | 2012-08-01 | 江铃汽车股份有限公司 | Process for forming inner automobile longeron plate and outer automobile longeron plate at the same time |
| CN103600773A (en) * | 2013-10-30 | 2014-02-26 | 奇瑞汽车股份有限公司 | Continuous variable cross-section car front longitudinal beam and preparation method thereof |
| CN103600773B (en) * | 2013-10-30 | 2016-03-16 | 奇瑞汽车股份有限公司 | A kind of continuous variable cross section automobile front longitudinal beam and preparation method thereof |
| CN104648476A (en) * | 2015-02-11 | 2015-05-27 | 郑州比克新能源汽车有限公司 | Front longitudinal beam back segment structure for electric automobile |
| CN109421801A (en) * | 2017-08-24 | 2019-03-05 | 江苏锋驰汽车车身制造有限公司 | A kind of high intensity body structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105292262B (en) | Fore sub frame | |
| CN201165250Y (en) | Lower frame construction of automobile body | |
| CN201633678U (en) | Automotive collision energy absorbing device | |
| CN201784680U (en) | Stepped front longitudinal beam | |
| CN109204496A (en) | Body structure and vehicle | |
| CN201136513Y (en) | Energy-absorbing device of vehicle body | |
| CN108016506A (en) | Vehicle cabin assembly | |
| CN202911804U (en) | Body-in-while front longitudinal beam strengthening structure | |
| CN110282017B (en) | Front cabin structure of vehicle body | |
| CN205906062U (en) | A front deck longeron for car | |
| CN102390432A (en) | Automobile longitudinal beam inner plate assembly | |
| CN103523039B (en) | A kind of impact resistant aluminum alloy head under-carriage front-end architecture | |
| CN204915840U (en) | Roof side rail of car A post | |
| CN202879598U (en) | Sheet-tailor-welded cavity truss-type auxiliary carframe with crash safety function | |
| CN103786791A (en) | Integrated car front longitudinal beam | |
| CN201745641U (en) | Front end structure of vehicle body front longitudinal beam | |
| CN204623580U (en) | The connection structure that front wall invades is reduced in a kind of automobile | |
| CN203486007U (en) | Frame front structure, frame and vehicle | |
| CN202271942U (en) | Automobile front anticollision beam assembly | |
| CN203142799U (en) | Roof frame structure of automotive body | |
| CN208306747U (en) | Stringer and automobile with force transferring structure | |
| CN207191172U (en) | A kind of automobile longitudinal girder | |
| CN203255251U (en) | Automobile frame structure for separate frame construction | |
| CN103448803B (en) | A kind of Floor rear crossbeam strengthens structure | |
| CN206841523U (en) | The double longeron endergonic structures of major-minor formula |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |
|
| CX01 | Expiry of patent term |