CN104386130A - Lower car body structure - Google Patents
Lower car body structure Download PDFInfo
- Publication number
- CN104386130A CN104386130A CN201410509400.5A CN201410509400A CN104386130A CN 104386130 A CN104386130 A CN 104386130A CN 201410509400 A CN201410509400 A CN 201410509400A CN 104386130 A CN104386130 A CN 104386130A
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- China
- Prior art keywords
- crossbeam
- soldering member
- body structure
- lower body
- group
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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
The invention relates to a lower car body structure. The lower car body structure comprises a large beam welding piece, wherein the large beam welding piece comprises a medium large beam; and the cross section of the medium large beam is gradually increased from the front end to the front-row seat mounting point, and is gradually decreased from the front-row seat mounting point to the rear end. The plate pattern of the medium large beam is changed, so that the great load-bearing position of a car is located at the position with the largest cross section of the medium large beam, the load-bearing capacity of the medium large beam is higher, and the defect of cracking of sheet metal parts due to poor joint strength/rigidity and stress concentration of a car body structure is effectively solved; and the lower car body structure is a greater improvement in the field.
Description
Technical field
The present invention relates to body construction, particularly relate to a kind of lower body structure.
Background technology
Body construction is made up of jointly component and joint thereof and sheet metal component, is the basic system of bearing load and transmitted load.Body construction arranges to have conclusive effect, the quality of structural arrangement to the performance (intensity, rigidity, mode etc.) of car body, not only affects the performance of vehicle body, also affects the cost of vehicle body.
Lower body structure accepts the weight of car load, if its strength/rigidity is inadequate, will affects the safety performance of car body, cause car load mode lower, and the problem ftractureed easily appears in road test run.
Thus prior art need to improve.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of lower body structure, for solving the not high problem of car body safety performance.
In order to achieve the above object, this invention takes following technical scheme:
A kind of lower body structure, comprise crossbeam soldering member, described crossbeam soldering member comprises middle crossbeam,
The cross-sectional plane of described middle crossbeam is become gradually greatly by front end to front-row seats attachment point, is diminished gradually to rear end by front-row seats attachment point.
In described lower body structure, described crossbeam soldering member comprises front crossbeam, rear crossbeam, and the front end of described middle crossbeam, facing to front dividing plate present position, is connected with described front crossbeam; The rear end of described middle crossbeam, facing to present position, B post lower end, is connected with described rear crossbeam.
In described lower body structure, described middle crossbeam comprises crossbeam brace panel, and described crossbeam brace panel is groove template, is installed between described middle crossbeam and crossbeam cover plate.
In described lower body structure, described front crossbeam has energy-absorbing induction rib group, and described energy-absorbing induction rib group comprises multiple energy-absorbing induction rib, and the length of energy-absorbing induction rib reduces from front to back successively.
In described lower body structure, the face of weld of described rear crossbeam and described middle crossbeam is inclined-plane.
In described lower body structure, described rear crossbeam is connected with described middle crossbeam welding manner, has inside and outside two-layer solder joint.
In described lower body structure, described crossbeam soldering member is two, is respectively left crossbeam soldering member and right crossbeam soldering member.
Described lower body structure, also comprise union piece group, constructional delails group, described union piece assembling is located between described left crossbeam soldering member and described right crossbeam soldering member, comprises the first cross member of frame, the second cross member of frame, the 3rd cross member of frame, the 4th cross member of frame, the 5th cross member of frame, the 6th cross member of frame, the 7th cross member of frame and front panel crossbeam;
The described constructional delails group outside that be installed in described left crossbeam soldering member and described right crossbeam soldering member corresponding to described union piece group, comprises 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 soldering member, the 3rd right crossbeam extension board soldering member, left front crossbeam outer side rail, right front crossbeam outer side rail.
In described lower body structure, the position that described union piece group and described constructional delails group and described crossbeam soldering member overlap has both sides bound edge.
In described lower body structure, described union piece group is three with described constructional delails group with described crossbeam soldering member overlapping mode and welds.
Compared to prior art, in a kind of lower body structure provided by the invention, the template of crossbeam in change, the large position of automobile load-bearing is made to drop on the maximum position of the cross-sectional plane of middle crossbeam, make the load-bearing of middle crossbeam larger, the overlapping splice strength/rigidity that actv. solves body structure is not enough, and stress is concentrated, easily there is the defect ftractureed in sheet metal component, is this area progress greatly.
Accompanying drawing explanation
Fig. 1 for the application provide in crossbeam structure schematic diagram.
A-A direction schematic cross-section in Fig. 1 that Fig. 2 provides for the application.
Fig. 3 for the application provide before crossbeam structure schematic diagram.
B-B direction schematic cross-section in Fig. 3 that Fig. 4 provides for the application.
The rear crossbeam structure schematic diagram that Fig. 5 provides for the application.
C-C direction schematic cross-section in Fig. 5 that Fig. 6 provides for the application.
The lower body structural representation that Fig. 7 provides for the application.
The overlap joint schematic diagram of the crossbeam that Fig. 8 provides for the application and crossbeam.
Detailed description of the invention
The invention provides a kind of lower body structure, for making object of the present invention, technical scheme and effect clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The application provides a kind of lower body structure, comprise crossbeam soldering member, refer to Fig. 1, described crossbeam soldering member comprises middle crossbeam 12, and the cross-sectional plane of described middle crossbeam 12 is become gradually greatly by front end to front-row seats attachment point, diminished gradually to rear end by front-row seats attachment point.
During concrete enforcement, because described middle crossbeam 12 is installed in member protection district, in order to larger weight can be born, larger weight-bearing surface sum needed for described middle crossbeam 12 is larger, and preferably, described middle crossbeam 12 is maximum at the position cross-sectional plane of front-row seats attachment point, its load-bearing is also maximum, see also Fig. 2, it is the schematic diagram of middle crossbeam 12 maximum cross section described in the application, and the wide * of largest cross-sectional sized is high is about 140mm*120mm; Preferably, the length of described middle crossbeam 12 is about 1600mm.
Further, described crossbeam soldering member comprises front crossbeam 11, rear crossbeam 13, and the front end of described middle crossbeam 12, facing to front dividing plate present position, is connected with described front crossbeam 11; The rear end of described middle crossbeam 12, facing to present position, B post lower end, is connected with described rear crossbeam 13; Concrete, due to described middle crossbeam 12 and described front crossbeam 11 and the local undersized that is connected with described rear crossbeam 13, for ensureing the integral rigidity of described crossbeam soldering member, the template of described middle crossbeam 12 is for smoothly to reduce size by upperlimit to two ends.
Further; consider that described middle crossbeam 12 is installed in passenger protection district; need the rigidity/intensity of centering crossbeam 12 to further lifting; described middle crossbeam 12 also comprises crossbeam brace panel 121; described crossbeam brace panel 121 is installed between described middle crossbeam 12 and crossbeam cover plate 14; can described middle crossbeam 12 be assisted to accept larger weight by actv., promote the integral rigidity of described middle crossbeam.
Further, see also Fig. 3, the structural representation of crossbeam before its lower body structure provided for the application.As shown in Figure 3, described front crossbeam 11 has energy-absorbing induction rib group 110, be installed in the vertical side of described front crossbeam 11, described energy-absorbing induction rib group 110 comprises multiple energy-absorbing induction rib, the length of energy-absorbing induction rib reduces from front to back successively, make collision energy-absorbing effect better, the integral rigidity of described front crossbeam can be promoted by actv..Preferably, described energy-absorbing induction rib is 4.
Concrete, the cross-sectional plane of described front crossbeam 11 as shown in Figure 4, crossbeam side part 112 before crossbeam side part 111, second before described front crossbeam 11 comprises first, before described first, before crossbeam side part 111 and described second, crossbeam side part 112 is all groove, its side have to outside along limit; Before described first, before crossbeam side part 111 and described second, crossbeam side part 112, with along limit joining, forms the chamber rod structure of hollow, and in conjunction with described energy-absorbing induction rib group 110, the collision energy-absorbing effect of described front crossbeam 11 effectively improves, can more effective protection occupant area.
Preferably, the cross section wide * high size of described front crossbeam 11 is about 65mm*95mm, and its length is about 760mm.
Further, consider the stability that described rear crossbeam 13 is connected with described middle crossbeam 12, joint face place also can load-bearing larger, refer to Fig. 5, described rear crossbeam 13 is inclined-plane with the face of weld of described middle crossbeam 12, and the rigidity of actv. is continuous described middle crossbeam 12 and described rear crossbeam 13, can reduce stress concentration phenomenon, make the structure durability degree of crossbeam soldering member and intensity more excellent, lower body structure is more stable.
Further, described rear crossbeam 13 overlaps with described middle crossbeam 12, the weight of main undertaking rear body, crossbeam structure part 131 and the second rear crossbeam structure part 132 after comprising first, after described first, after crossbeam structure part 131 and described second, crossbeam structure part overlaps 132 Formation cross-sections rectangular cavity body structure as shown in Figure 6; For ensureing the integral rigidity of crossbeam soldering member rear end, described rear crossbeam 13 is connected with described middle crossbeam 12 welding manner, has inside and outside two-layer solder joint.
Preferably, the cross section wide * high size of described rear crossbeam 13 is about 70mm* 90mm, and length is about 1900mm.
In the specific implementation, described front crossbeam 11, described middle crossbeam 12, described rear crossbeam 13 connect successively, and fore-and-aft direction runs through and is installed in vehicle bottom, improve operability and the ride comfort of car load.
Further, refer to Fig. 7, described crossbeam soldering member is two, is respectively left crossbeam soldering member 101 and right crossbeam soldering member 102, effectively promotes the rigidity of car load and operability and ride comfort.
Further, consider the Stability Analysis of Structures of lower body, the application also comprises union piece group 20, described union piece group 20 is installed between described left crossbeam soldering member 101 and described right crossbeam soldering member 102, comprises the first cross member of frame 21, second cross member of frame 22, the 3rd cross member of frame 23, the 4th cross member of frame 24, the 5th cross member of frame 25, the 6th cross member of frame 26, the 7th cross member of frame 27 and front panel crossbeam 28.
Concrete, the two ends of described first cross member of frame 21 are installed in the front end of the front crossbeam of described left crossbeam soldering member 101 and described right crossbeam soldering member 102 respectively; The two ends of described second cross member of frame 22 and described 3rd cross member of frame 23 are installed between the middle crossbeam of described left crossbeam soldering member 101 and described right crossbeam soldering member 102 successively, auxiliary weight of bearing automobile middle part; Described 4th cross member of frame 24, described 5th cross member of frame 25, described 6th cross member of frame 26, described 7th cross member of frame 27 are installed between the rear crossbeam of described left crossbeam soldering member 101 and described right crossbeam soldering member 102 successively, auxiliary weight of bearing automobile rear; The two ends of described front panel crossbeam 28 are installed between the middle crossbeam of described left crossbeam soldering member 101 and described right crossbeam soldering member 102, and actv. improves the stability in passenger protection district.
Described lower body structure, also comprise constructional delails group 30, the described constructional delails group outside that be installed in described left crossbeam soldering member 101 and described right crossbeam soldering member 102 corresponding to described union piece group, comprise left side pull bar soldering member 311, right side pull bar soldering member 312, first left crossbeam extension board soldering member 321, second left crossbeam extension board soldering member 331, 3rd left crossbeam extension board soldering member 341, first right crossbeam extension board soldering member 322, second right crossbeam extension board soldering member 332, 3rd right crossbeam extension board soldering member 342, left front crossbeam outer side rail 351, right front crossbeam outer side rail 352.
Concrete, described left side pull bar soldering member 311, described first left crossbeam extension board soldering member 321, described second left crossbeam extension board soldering member 331, described 3rd left crossbeam extension board soldering member 341 and left front crossbeam outer side rail 351 are overlapped on the left side of described left crossbeam soldering member 101, and connect the left-side assembly part of automobile; Right side pull bar right crossbeam extension board soldering member 322, the second right crossbeam extension board soldering member 342 of right crossbeam extension board soldering member the 332, the 3rd of soldering member 312, first and right front crossbeam outer side rail 352 are overlapped on the right side of described right crossbeam soldering member 102, and connect the right side wall assembly part of automobile.Described union piece group, described constructional delails group, described left crossbeam soldering member, described right crossbeam soldering member, described left-side structure and described right side wall structure are effectively linked together, improve the resistance to overturning of automobile lower body, and then improve the mode of car body body in white.
Further, consider the stability that the part of described union piece group 20 and described constructional delails group 30 and described crossbeam soldering member 8 overlap, refer to Fig. 8, its part connection diagram provided for the application, the position that described union piece group 20 and described constructional delails group 30 overlap with described crossbeam soldering member respectively all has both sides bound edge 40.
Further, for promoting the stability that part connects, described union piece group 20 and described constructional delails group 30 are three with the overlapping mode of described crossbeam soldering member respectively and weld.
Be understandable that, for those of ordinary skills, can be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, and all these change or replace the protection domain that all should belong to the claim appended by the present invention.
Claims (10)
1. a lower body structure, comprises crossbeam soldering member, and described crossbeam soldering member comprises middle crossbeam, it is characterized in that,
The cross-sectional plane of described middle crossbeam is become gradually greatly by front end to front-row seats attachment point, is diminished gradually to rear end by front-row seats attachment point.
2. lower body structure according to claim 1, is characterized in that, described crossbeam soldering member comprises front crossbeam, rear crossbeam, and the front end of described middle crossbeam, facing to front dividing plate present position, is connected with described front crossbeam; The rear end of described middle crossbeam, facing to present position, B post lower end, is connected with described rear crossbeam.
3. lower body structure according to claim 1, is characterized in that, described middle crossbeam comprises crossbeam brace panel, and described crossbeam brace panel is groove template, is installed between described middle crossbeam and crossbeam cover plate.
4. lower body structure according to claim 2, is characterized in that, described front crossbeam has energy-absorbing induction rib group, and described energy-absorbing induction rib group comprises multiple energy-absorbing induction rib, and the length of energy-absorbing induction rib reduces from front to back successively.
5. lower body structure according to claim 2, is characterized in that, the face of weld of described rear crossbeam and described middle crossbeam is inclined-plane.
6. lower body structure according to claim 3, is characterized in that, described rear crossbeam is connected with described middle crossbeam welding manner, has inside and outside two-layer solder joint.
7., according to the arbitrary described lower body structure of claim 1-6, it is characterized in that, described crossbeam soldering member is two, is respectively left crossbeam soldering member and right crossbeam soldering member.
8. lower body structure according to claim 7, it is characterized in that, also comprise union piece group, constructional delails group, described union piece assembling is located between described left crossbeam soldering member and described right crossbeam soldering member, comprises the first cross member of frame, the second cross member of frame, the 3rd cross member of frame, the 4th cross member of frame, the 5th cross member of frame, the 6th cross member of frame, the 7th cross member of frame and front panel crossbeam;
The described constructional delails group outside that be installed in described left crossbeam soldering member and described right crossbeam soldering member corresponding to described union piece group, comprises 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 soldering member, the 3rd right crossbeam extension board soldering member, left front crossbeam outer side rail, right front crossbeam outer side rail.
9. lower body structure according to claim 8, is characterized in that, the position that described union piece group and described constructional delails group and described crossbeam soldering member overlap has both sides bound edge.
10. lower body structure according to claim 9, is characterized in that, described union piece group is three with described constructional delails group with described crossbeam soldering member overlapping mode and welds.
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 true CN104386130A (en) | 2015-03-04 |
| CN104386130B CN104386130B (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410509400.5A Active CN104386130B (en) | 2014-09-29 | 2014-09-29 | A kind of lower body structure |
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| CN (1) | CN104386130B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107554610A (en) * | 2016-07-01 | 2018-01-09 | 上汽通用五菱汽车股份有限公司 | A kind of reinforced rear big beam assembly |
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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 |
| US20040104602A1 (en) * | 2002-10-18 | 2004-06-03 | Honda Motor Co., Ltd. | Side impact control structure |
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| 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 |
-
2014
- 2014-09-29 CN CN201410509400.5A patent/CN104386130B/en active Active
Patent Citations (8)
| 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 |
| US20040104602A1 (en) * | 2002-10-18 | 2004-06-03 | Honda Motor Co., Ltd. | Side impact control structure |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107554610A (en) * | 2016-07-01 | 2018-01-09 | 上汽通用五菱汽车股份有限公司 | A kind of reinforced rear big beam assembly |
| 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 |
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| Publication number | Publication date |
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| CN104386130B (en) | 2017-12-05 |
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