CN104386130B - A kind of lower body structure - Google Patents
A kind of lower body structure Download PDFInfo
- Publication number
- CN104386130B CN104386130B CN201410509400.5A CN201410509400A CN104386130B CN 104386130 B CN104386130 B CN 104386130B CN 201410509400 A CN201410509400 A CN 201410509400A CN 104386130 B CN104386130 B CN 104386130B
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- CN
- China
- Prior art keywords
- crossbeam
- soldering member
- group
- body structure
- frame cross
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D23/00—Combined superstructure and frame, i.e. monocoque constructions
Abstract
A kind of lower body structure, including crossbeam soldering member, the crossbeam soldering member include middle crossbeam, and the cross section of the middle crossbeam is become larger to front-row seats mount point by front end, tapered into by front-row seats mount point to rear end.The template of crossbeam in change, the position for making automobile load-bearing big fall in the maximum position in the cross section of middle crossbeam, make the load-bearing of middle crossbeam bigger, the effective overlapping splice strength/rigidity deficiency for solving body structure, stress concentration, the defects of sheet metal component is easily cracking, be that this area is greatly improved.
Description
Technical field
The present invention relates to body construction, more particularly to a kind of lower body structure.
Background technology
Body construction is collectively constituted by component and its joint and sheet metal component, is subject to load and is transmitted the fundamental system of load
System.Body construction, which is arranged, has conclusive effect to the performance (intensity, rigidity, mode etc.) of car body, the quality of structure arrangement,
The performance of vehicle body is not only influenceed, also influences the cost of vehicle body.
Lower body structure accepts the weight of vehicle, if its strength/rigidity is inadequate, will influence the security of car body
Can, cause the problem of vehicle mode is relatively low, and road test appearance of vehicle is easily cracking.
Thus prior art could be improved and improve.
The content of the invention
In view of in place of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of lower body structure, for solving
The problem of certainly car body security performance is not high.
In order to achieve the above object, this invention takes following technical scheme：
A kind of lower body structure, including crossbeam soldering member, the crossbeam soldering member include middle crossbeam,
The cross section of the middle crossbeam becomes larger by front end to front-row seats mount point, by front-row seats mount point after
End tapers into.
In described lower body structure, the crossbeam soldering member includes preceding crossbeam, rear crossbeam, the front end pair of the middle crossbeam
Front baffle present position, is connected with the preceding crossbeam；The rear end of the middle crossbeam is and described against B posts lower end present position
Crossbeam connects afterwards.
In described lower body structure, the middle crossbeam includes crossbeam reinforcing plate, and the crossbeam reinforcing plate is groove template,
It is installed between the middle crossbeam and crossbeam cover plate.
In described lower body structure, there is the preceding crossbeam energy-absorbing to induce rib group, and the energy-absorbing induces rib group bag
Multiple energy-absorbing induction ribs are included, the length of energy-absorbing induction rib is sequentially reduced from front to back.
In described lower body structure, the solder side of the rear crossbeam and the middle crossbeam is inclined-plane.
In described lower body structure, the rear crossbeam is connected with the middle crossbeam welding manner, has inside and outside two layers of weldering
Point.
In described lower body structure, the crossbeam soldering member is two, respectively left crossbeam soldering member and the weldering of right crossbeam
Component.
Described lower body structure, in addition to union piece group, constitutional detail group, the union piece assembling are located at described
Between left crossbeam soldering member and the right crossbeam soldering member, including the first frame cross, the second frame cross, the 3rd vehicle frame are horizontal
Beam, the 4th frame cross, the 5th frame cross, the 6th frame cross, the 7th frame cross and front panel crossbeam；
The constitutional detail group is corresponding with the union piece group to be installed in the left crossbeam soldering member and the right crossbeam
The outside of soldering member, including left side pull bar soldering member, right side pull bar soldering member, the first left crossbeam extension board soldering member, second left side
Crossbeam extension board soldering member, the 3rd left crossbeam extension board soldering member, the first right crossbeam extension board soldering member, the second right crossbeam extension
Crossbeam outer side rail before plate soldering member, the 3rd right crossbeam extension board soldering member, left front crossbeam outer side rail, the right side.
In described lower body structure, the union piece group overlaps with the constitutional detail group and the crossbeam soldering member
Position there is both sides bound edge.
In described lower body structure, the union piece group overlaps with the constitutional detail group and the crossbeam soldering member
Mode is welded for three faces.
Compared to prior art, in a kind of lower body structure provided by the invention, the template of crossbeam, holds automobile in change
Great position falls in the maximum position in the cross section of middle crossbeam, makes the load-bearing of middle crossbeam bigger, effectively solves vehicle body knot
The defects of overlapping splice strength/rigidity of structure is insufficient, stress concentration, and sheet metal component is easily cracking, is that this area is greatly entered
Step.
Brief description of the drawings
Fig. 1 is the middle crossbeam structure schematic diagram that the application provides.
Fig. 2 is A-A directions schematic cross-section in Fig. 1 that the application provides.
Fig. 3 is the preceding crossbeam structure schematic diagram that the application provides.
Fig. 4 is B-B directions schematic cross-section in Fig. 3 that the application provides.
Fig. 5 is the rear crossbeam structure schematic diagram that the application provides.
Fig. 6 is C-C directions schematic cross-section in Fig. 5 that the application provides.
Fig. 7 is the lower body structural representation that the application provides.
Fig. 8 is the overlap joint schematic diagram of the crossbeam that the application provides and crossbeam.
Embodiment
The present invention provides a kind of lower body structure, to make the purpose of the present invention, technical scheme and effect clearer, bright
Really, developing simultaneously referring to the drawings, the present invention is described in more detail for embodiment.It should be appreciated that specific implementation described herein
Example is not intended to limit the present invention only to explain the present invention.
The application provides a kind of lower body structure, including crossbeam soldering member, referring to Fig. 1, the crossbeam soldering member includes
Middle crossbeam 12, the cross section of the middle crossbeam 12 are become larger by front end to front-row seats mount point, by front-row seats mount point
Tapered into rear end.
When it is implemented, because the middle crossbeam 12 is installed in member protection area, in order to bear bigger weight, institute
State bigger load-bearing area needed for crossbeam 12 and bigger, it is preferred that the middle crossbeam 12 is in front-row seats mount point
Position cross section is maximum, and its load-bearing is also maximum, and also referring to Fig. 2, it is the middle maximum cross section of crossbeam 12 described herein
Schematic diagram, the wide * of largest cross-sectional sized high is about 140mm*120mm；Preferably, the length of the middle crossbeam 12 is about 1600mm.
Further, the crossbeam soldering member includes preceding crossbeam 11, rear crossbeam 13, and the front end of the middle crossbeam 12 is before
Dividing plate present position, it is connected with the preceding crossbeam 11；The rear end of the middle crossbeam 12 is and described against B posts lower end present position
Crossbeam 13 connects afterwards；Specifically, the ground being connected due to the middle crossbeam 12 with the preceding crossbeam 11 and with the rear crossbeam 13
Square undersized, to ensure the integral rigidity of the crossbeam soldering member, the template of the middle crossbeam 12 be from full-size to
Both ends smoothly reduce size.
Further, it is contemplated that the middle crossbeam 12 is installed in passenger protection area, needs rigidity/intensity pair of centering crossbeam 12
Further lifting, the middle crossbeam 12 also include crossbeam reinforcing plate 121, and the crossbeam reinforcing plate 121 is installed in the middle crossbeam
It between 12 and crossbeam cover plate 14, can effectively aid in the middle crossbeam 12 to accept bigger weight, lift the middle crossbeam
Integral rigidity.
Further, also referring to Fig. 3, it is the structural representation of crossbeam before the lower body structure that the application provides.
As shown in figure 3, the preceding crossbeam 11 has energy-absorbing induction rib group 110, the vertical side of the preceding crossbeam 11 is installed in, it is described
Energy-absorbing induction rib group 110 includes multiple energy-absorbings induction rib, and the length of energy-absorbing induction rib is sequentially reduced, makes to touch from front to back
Hit energy-absorbing effect more preferably, can effectively lift the integral rigidity of the preceding crossbeam.Preferably, the energy-absorbing induction rib is 4
It is individual.
Specifically, the cross section of the preceding crossbeam 11 as shown in figure 4, the preceding crossbeam 11 include first before crossbeam side part
111st, crossbeam side part 112 before second, crossbeam side part 112 is all groove before crossbeam side part 111 and described second before described first, its
Side has to outside along side；Before described first before crossbeam side part 111 and described second crossbeam side part 112 with along side joining,
Hollow chamber rod structure is formed, with reference to energy-absorbing induction rib group 110, the collision energy-absorbing effect of the preceding crossbeam 11 effectively carries
Height, it can more effectively protect occupant area.
Preferably, the section high sizes of wide * of the preceding crossbeam 11 are about 65mm*95mm, its length about 760mm.
Further, it is contemplated that crossbeam 13 and the stability of the middle crossbeam 12 connection after described, also can at joint face
Load-bearing is bigger, referring to Fig. 5, the solder side of crossbeam 13 and the middle crossbeam 12 is inclined-plane after described, it is effectively continuous described
Middle crossbeam 12 and it is described after crossbeam 13 rigidity, stress concentration phenomenon can be reduced, make crossbeam soldering member structure durability degree and
Intensity is more excellent, and lower body structure is more stable.
Further, the rear crossbeam 13 overlaps with the middle crossbeam 12, the main weight for accepting rear body, including the
Crossbeam structure part 132 after crossbeam structure part 131 and second after one is big after crossbeam structure part 131 and described second after described first
Girder construction part overlaps 132 Formation cross-sections strip cavity body structure as shown in Figure 6；To ensure the overall firm of crossbeam soldering member rear end
Degree, the rear crossbeam 13 are connected with the middle welding manner of crossbeam 12, have inside and outside two layers of solder joint.
Preferably, the section high sizes of wide * of the rear crossbeam 13 are about 70mm* 90mm, and length is about 1900mm.
In the specific implementation, the preceding crossbeam 11, the middle crossbeam 12, the rear crossbeam 13 are sequentially connected, fore-and-aft direction
Through vehicle bottom is installed in, the operability and ride comfort of vehicle are improved.
Further, referring to Fig. 7, the crossbeam soldering member is two, respectively left crossbeam soldering member 101 and right crossbeam
Soldering member 102, effectively lift the rigidity and operability and ride comfort of vehicle.
Further, it is contemplated that the Stability Analysis of Structures of lower body, the application also include union piece group 20, the union piece
Group 20 is installed between the left crossbeam soldering member 101 and the right crossbeam soldering member 102, including the first frame cross 21, the
Two frame cross 22, the 3rd frame cross 23, the 4th frame cross 24, the 5th frame cross 25, the 6th frame cross the 26, the 7th
Frame cross 27 and front panel crossbeam 28.
Specifically, the both ends of first frame cross 21 are respectively installed in the left crossbeam soldering member 101 and the right side
The front end of the preceding crossbeam of crossbeam soldering member 102；The both ends of second frame cross 22 and the 3rd frame cross 23 according to
Secondary to be installed between the middle crossbeam of the left crossbeam soldering member 101 and the right crossbeam soldering member 102, auxiliary bears automobile middle part
Weight；4th frame cross 24, the 5th frame cross 25, the 6th frame cross 26, the 7th vehicle frame
Crossbeam 27 is installed between the rear crossbeam of the left crossbeam soldering member 101 and the right crossbeam soldering member 102 successively, and auxiliary is born
The weight of automobile rear；The both ends of the front panel crossbeam 28 are installed in the left crossbeam soldering member 101 and the right crossbeam weldering
Between the middle crossbeam of component 102, the effective stability for improving passenger protection area.
Described lower body structure, in addition to constitutional detail group 30, the constitutional detail group and the union piece group pair
It should be installed in the outside of the left crossbeam soldering member 101 and the right crossbeam soldering member 102, including left side pull bar soldering member 311,
Right side pull bar soldering member 312, the first left crossbeam extension board soldering member 321, the second left crossbeam extension board soldering member the 331, the 3rd are left
Crossbeam extension board soldering member 341, the first right crossbeam extension board soldering member 322, the second right crossbeam extension board soldering member the 332, the 3rd
Crossbeam outer side rail 352 before right crossbeam extension board soldering member 342, left front crossbeam outer side rail 351, the right side.
Specifically, the left side pull bar soldering member 311, the first left crossbeam extension board soldering member 321, second left side
Crossbeam extension board soldering member 331, the 3rd left crossbeam extension board soldering member 341 and left front crossbeam outer side rail 351 are overlapped on
The left side of the left crossbeam soldering member 101, and connect the left-side assembly part of automobile；Right side pull bar soldering member 312, first is right
Before crossbeam extension board soldering member 322, the second right crossbeam extension board soldering member 332, the 3rd right crossbeam extension board soldering member 342 and the right side
Crossbeam outer side rail 352 is overlapped on the right side of the right crossbeam soldering member 102, and connects the right side wall assembly part of automobile.Make
The union piece group, the constitutional detail group, the left crossbeam soldering member, the right crossbeam soldering member, the left-side knot
Structure and the right side closed structure are effectively connected to improve the resistance to overturning of automobile lower body together, and then it is white to improve car body
The mode of vehicle body.
Further, it is contemplated that the part of the union piece group 20 and the constitutional detail group 30 welds with the crossbeam
Component 8 overlap stability, referring to Fig. 8, its be the application provide part connection diagram, the union piece group 20 with
And position of the constitutional detail group 30 respectively with crossbeam soldering member overlap joint all has both sides bound edge 40.
Further, it is the stability of lifting part connection, the union piece group 20 and the constitutional detail group 30
The overlapping mode with the crossbeam soldering member welds for three faces respectively.
It is understood that for those of ordinary skills, can be with technique according to the invention scheme and its hair
Bright design is subject to equivalent substitution or change, and all these changes or replacement should all belong to the guarantor of appended claims of the invention
Protect scope.
Claims (4)
1. a kind of lower body structure, including crossbeam soldering member, the crossbeam soldering member includes middle crossbeam, it is characterised in that
The cross section of the middle crossbeam becomes larger by front end to front-row seats mount point, by front-row seats mount point to rear end by
Gradual change is small；The crossbeam soldering member includes preceding crossbeam, rear crossbeam, the front end of the middle crossbeam against front baffle present position, with
The preceding crossbeam connection；The rear end of the middle crossbeam is connected against B posts lower end present position with the rear crossbeam；The crossbeam
Soldering member is two, respectively left crossbeam soldering member and right crossbeam soldering member；Also include union piece group, constitutional detail group, institute
Union piece assembling is stated to be located between the left crossbeam soldering member and the right crossbeam soldering member, including the first frame cross, the
Two frame cross, the 3rd frame cross, the 4th frame cross, the 5th frame cross, the 6th frame cross, the 7th frame cross and
Front panel crossbeam；
The constitutional detail group is corresponding with the union piece group to be installed in the left crossbeam soldering member and the right crossbeam soldering
The outside of part, including left side pull bar soldering member, right side pull bar soldering member, the first left crossbeam extension board soldering member, the second left crossbeam
Extension board soldering member, the 3rd left crossbeam extension board soldering member, the first right crossbeam extension board soldering member, the second right crossbeam extension board weldering
Crossbeam outer side rail before component, the 3rd right crossbeam extension board soldering member, left front crossbeam outer side rail, the right side；The middle crossbeam includes
Crossbeam reinforcing plate, the crossbeam reinforcing plate are groove template, are installed between the middle crossbeam and crossbeam cover plate；The preceding crossbeam
Rib group is induced with energy-absorbing, the energy-absorbing induction rib group includes multiple energy-absorbings induction rib, and energy-absorbing induces the length of rib
It is sequentially reduced from front to back；The solder side of crossbeam and the middle crossbeam is inclined-plane after described.
2. lower body structure according to claim 1, it is characterised in that crossbeam and the middle crossbeam welding manner after described
Connection, there is inside and outside two layers of solder joint.
3. lower body structure according to claim 2, it is characterised in that the union piece group and the constitutional detail group
There is both sides bound edge with the position of crossbeam soldering member overlap joint.
4. lower body structure according to claim 3, it is characterised in that the union piece group and the constitutional detail group
Welded with the crossbeam soldering member overlapping mode for three faces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410509400.5A CN104386130B (en) | 2014-09-29 | 2014-09-29 | A kind of lower body structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410509400.5A CN104386130B (en) | 2014-09-29 | 2014-09-29 | A kind of lower body structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104386130A CN104386130A (en) | 2015-03-04 |
| CN104386130B true CN104386130B (en) | 2017-12-05 |
Family
ID=52604118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410509400.5A Active CN104386130B (en) | 2014-09-29 | 2014-09-29 | A kind of lower body structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104386130B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107554610B (en) * | 2016-07-01 | 2024-02-13 | 上汽通用五菱汽车股份有限公司 | Reinforced rear girder assembly |
Citations (7)
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|---|---|---|---|---|
| WO1997000595A1 (en) * | 1995-06-16 | 1997-01-03 | Dana Corporation | Preparation of vehicle frame components for molecular bonding using magnetic impulse welding techniques |
| US6412818B1 (en) * | 1999-08-31 | 2002-07-02 | Dana Corporation | Vehicle body and frame assembly and method of manufacturing same |
| CN101412409A (en) * | 2008-12-02 | 2009-04-22 | 重庆长安汽车股份有限公司 | Automobile rear longitudinal girder having gradually changing cross section |
| CN101565057A (en) * | 2008-04-24 | 2009-10-28 | 本特勒尔汽车技术有限公司 | Motor vehicle frame |
| CN201872795U (en) * | 2010-11-17 | 2011-06-22 | 河南奔马股份有限公司 | Novel variable-section longitudinal beam of frame |
| CN201980295U (en) * | 2011-03-22 | 2011-09-21 | 奇瑞汽车股份有限公司 | Front longitudinal beam energy absorption structure |
| CN204279637U (en) * | 2014-09-29 | 2015-04-22 | 上汽通用五菱汽车股份有限公司 | A kind of lower body structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6834912B2 (en) * | 2002-10-18 | 2004-12-28 | Honda Motor Co., Ltd. | Structure for controlled deformation of body side structure |
-
2014
- 2014-09-29 CN CN201410509400.5A patent/CN104386130B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997000595A1 (en) * | 1995-06-16 | 1997-01-03 | Dana Corporation | Preparation of vehicle frame components for molecular bonding using magnetic impulse welding techniques |
| US6412818B1 (en) * | 1999-08-31 | 2002-07-02 | Dana Corporation | Vehicle body and frame assembly and method of manufacturing same |
| CN101565057A (en) * | 2008-04-24 | 2009-10-28 | 本特勒尔汽车技术有限公司 | Motor vehicle frame |
| CN101412409A (en) * | 2008-12-02 | 2009-04-22 | 重庆长安汽车股份有限公司 | Automobile rear longitudinal girder having gradually changing cross section |
| CN201872795U (en) * | 2010-11-17 | 2011-06-22 | 河南奔马股份有限公司 | Novel variable-section longitudinal beam of frame |
| CN201980295U (en) * | 2011-03-22 | 2011-09-21 | 奇瑞汽车股份有限公司 | Front longitudinal beam energy absorption structure |
| CN204279637U (en) * | 2014-09-29 | 2015-04-22 | 上汽通用五菱汽车股份有限公司 | A kind of lower body structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104386130A (en) | 2015-03-04 |
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