CN102358349A - Front body framework structure of automobile - Google Patents
Front body framework structure of automobile Download PDFInfo
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- CN102358349A CN102358349A CN2011102276239A CN201110227623A CN102358349A CN 102358349 A CN102358349 A CN 102358349A CN 2011102276239 A CN2011102276239 A CN 2011102276239A CN 201110227623 A CN201110227623 A CN 201110227623A CN 102358349 A CN102358349 A CN 102358349A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000006378 damage Effects 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000009545 invasion Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 208000027418 Wounds and injury Diseases 0.000 description 7
- 208000014674 injury Diseases 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000002085 persistent effect Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention discloses a front body framework structure of an automobile. The front body framework structure of the automobile comprises an automobile body A post, a front protective cross beam, a front engine room framework assembly and a front floor framework assembly, wherein the front engine room framework assembly comprises a front engine room longitudinal beam, and a plurality of longitudinal beams and cross beams, which are connected with the front engine room longitudinal beam and are used for dispersing and transferring collision energy; and the front floor framework assembly comprises a front floor longitudinal beam, a lower door sill, and a plurality of longitudinal beams and cross beams, which are connected with the front floor longitudinal beam and the lower door sill and are used for dispersing and transferring collision energy. Through the technical scheme, a plurality of structural beams are welded to form a closed annular body framework structure; the plurality of longitudinal beams and cross beams are used for absorbing and transferring the collision impact load, so that the front part is deformed and absorbs energy sufficiently; the number of impact energy transfer passages is large; the energy is reasonably dispersed; the energy is absorbed in time; the invasion amount of a front baffle plate is small; the deformation of the floor and a middle passage is small; the deformation of a cab is reduced; and thus, the damage to a passenger in the collision, and the maintenance cost of the automobile are reduced.
Description
Technical field
The present invention relates to the auto body skeleton, specifically, the present invention relates to a kind of front portion of car body skeleton structure.
Background technology
Along with popularizing of automobile, people are increasingly high to the concern of the safety of automobile, and the collision statutory standard that improves constantly also proposes increasingly high requirement to auto body.How to improve energy, reduction operator's compartment displacement and accekeration and reduction occupant injury value that auto body absorbs in collision process, the performance in collision has huge contribution to car load.
Common vehicle body cab structure form is at present: vehicle body vertically mainly constitutes the body forward structure skeleton structure by the threshold and the vehicle body A post in preceding guarantor's crossbeam, forward engine room longeron, preceding longitudinal floor beam, the outside.Because the longitudinal beam negligible amounts of the load that withstands shocks in this structure, simultaneously before and after longeron do not adopt through connection structure, be prone to cause forwardly in the collision process; Exist the impact energy transmission channels not enough on the vehicle body; Energy disperses unreasonable, and anterior distortion energy-absorbing is abundant inadequately, and front apron intrusion amount is big; Floor and middle channel deformation are bigger, finally the occupant are caused bigger injury; And the absorption of the energy value in the collision process that has no basis and disperse the transmission situation and the key area different features is arranged vehicle body framework construction, very easily cause body framwork unnecessary harm and occupant injury.
Summary of the invention
Technical matters to be solved by this invention provides a kind of front portion of car body skeleton structure, and it can better reduce occupant injury value in the collision process, reduces the maintenance cost of vehicle after collision case simultaneously.
In order to solve the problems of the technologies described above; The technical scheme that the present invention adopted is: a kind of front portion of car body skeleton structure; Comprise vehicle body A post, preceding guarantor's crossbeam, forward engine room frame assembly and front floor framework assembly; Said forward engine room frame assembly comprises the forward engine room longeron; Longitudinal floor beam and bottom threshold before said front floor framework assembly comprises, said forward engine room frame assembly comprise that also many are disperseed and transmit the longitudinal and cross beam of collision energy with said forward engine room longeron bonded assembly, and said front floor framework assembly also comprises many longitudinal and cross beams with said preceding longitudinal floor beam and dispersion of bottom threshold bonded assembly and transmission collision energy.
It is double-decker that the many longitudinal and cross beams that said forward engine room frame assembly comprises form the forward engine room frame assembly; Understructure comprises and said forward engine room longeron bonded assembly water tank cross sill and front deck rear portion crossbeam; Superstructure comprises the front deck top longeron and this front deck top longeron bonded assembly front windshield cross sill that is located at said forward engine room longeron top, and said front deck top longeron is connected with said vehicle body A post.
The longitudinal and cross beam that said front floor framework assembly also comprises is middle longitudinally passage and horizontal seat crossbeam, and said middle passage is connected with said front deck rear portion crossbeam, and said seat crossbeam comprises seat front cross rail and seat after cross member.
Passage is located at the midway location of said front floor framework assembly in said, and said preceding longitudinal floor beam symmetry is located at the both sides of said middle passage.
Said seat front cross rail and seat after cross member pass said middle passage two ends and are connected on the threshold of said bottom.
Passage and preceding longitudinal floor beam are connected with oblique front deck rear portion stringer in said.
The outside of passage longitudinally is provided with the preceding floor stringer that fuses with it in said.
Passage reinforcement during passage and said seat after cross member junction are provided with in said.
Said bottom threshold comprises the gusset bottom threshold and inboard interior threshold outside the vehicle body, and threshold is connected with said preceding longitudinal floor beam through the threshold connecting panel in this.
Before said, be provided with a plurality of deformation inductdion grooves on the energy-absorbing box of guarantor's crossbeam with on the said forward engine room longeron.
The present invention adopts technique scheme, adopts transmission of a kind of energy multi-channel and absorption pattern, and many root architectures beam is welded to form a closed-loop vehicle body framework construction; Absorb and transmit collision impact load through many longitudinal and cross beams, anterior distortion energy-absorbing is abundant, and the impact energy transmission channels is more; Energy disperses rationally; Absorption to energy is timely, and front apron intrusion amount is little, and floor and middle channel deformation are less; Reduce the deflection of operator's compartment, finally reduce in the collision process injury values and automotive servicing cost the occupant.
Description of drawings
Fig. 1 is the structural representation of body forward structure skeleton of the present invention;
Fig. 2 is a vehicle body operator's compartment inferior bone shelf structure scheme drawing of the present invention, and arrow is depicted as collision back impact energy transfer way among the figure;
Fig. 3 is the connection structure scheme drawing of preceding guarantor's crossbeam and forward engine room longeron;
Fig. 4 is the A-A schematic cross-section of forward engine room longeron among Fig. 3;
Mark among the above-mentioned figure is: 1, preceding guarantor's crossbeam; 2, forward engine room longeron; 3, water tank cross sill; 4, front deck top longeron; 5, vehicle body A post; 6, front deck rear portion crossbeam; 7, threshold connecting panel; 8, front deck rear portion stringer; 9, gusset bottom threshold; 10, interior threshold; 11, preceding longitudinal floor beam; 12, preceding floor stringer; 13, middle passage; 14, front windshield cross sill; 15, seat front cross rail; 16, seat after cross member; 17, middle passage reinforcement.
The specific embodiment
As shown in Figure 1; A kind of front portion of car body skeleton structure of the present invention; Make up a vehicle body framework construction through multi-channel bonded assembly body rail; Realize reducing vehicle body maintenance cost to occupant injury value and vehicle itself in collision process; This body framwork mainly is made up of vehicle body A post 5, preceding guarantor's crossbeam 1, forward engine room frame assembly and front floor framework assembly; The forward engine room frame assembly comprises forward engine room longeron 2 and is used to disperse and transmit many longitudinal and cross beams of collision energy with preceding guarantor's crossbeam 1 bonded assembly, and the front floor framework assembly comprises dispersion that preceding longitudinal floor beam 11, bottom threshold and many and preceding longitudinal floor beam 11 are connected with the bottom threshold and the longitudinal and cross beam that transmits collision energy.The bottom threshold comprises the gusset bottom threshold 9 and inboard interior threshold 10 in the vehicle body outside.The forward engine room frame assembly comprises forward engine room longeron 2, water tank cross sill 3, front deck rear portion crossbeam 6, front deck top longeron 4 and front windshield cross sill 14; It is double-decker that these longitudinal and cross beams are interconnected to form the forward engine room frame assembly; Understructure comprise with preceding guarantor's crossbeam 1 bonded assembly forward engine room longeron 2, with forward engine room longeron 2 bonded assembly water tank cross sills 3 and front deck rear portion crossbeam 6; Preceding crossbeam 1, water tank cross sill 3 and the front deck rear portion crossbeam 6 protected is for be arranged in order from front to back; Superstructure comprise the front deck top longeron 4 that is located at forward engine room longeron 2 tops and with these front deck top longeron 4 bonded assembly front windshield cross sills 14, front deck top longeron 4 is connected with front windshield cross sill 14 and with vehicle body A post 5.The superstructure of forward engine room frame assembly and understructure are also through vertical support beam support and connection.
As shown in Figure 1, the front floor framework assembly comprises preceding longitudinal floor beam 11, interior threshold 10, middle passage 13, seat front cross rail 15, seat after cross member 16, preceding floor stringer 12 and front deck rear portion stringer 8.Middle passage 13 vertically runs through the midway location that operator's compartment is arranged on the front floor framework assembly, and the one of which end is connected on the longeron of front deck rear portion, and the other end is connected on the vehicle body middle beam, the both sides of passage 13 during two preceding longitudinal floor beam 11 symmetries are located at.For Joint strenght and transmission that is beneficial to collision energy and the dispersion that adds persistent erection passage 13; Between the preceding longitudinal floor beam 11 of middle passage 13 and its both sides, be connected with oblique front deck rear portion stringer 8, the impact energy of coming from forward engine room longeron 2 transmission is directly through front deck rear portion stringer 8 is passed on the passage 13.And longitudinally be provided with the preceding floor stringer 12 that fuses with it in the outside of middle passage 13; And extend to crossbeam 6 places, front deck rear portion always; To add the intensity of persistent erection passage 13, bear and absorb more impact energy, prevent that floor and 13 distortion of middle passage are bigger.The bottom threshold comprises the gusset bottom threshold 9 and inboard interior threshold 10 in the vehicle body outside, and interior threshold 10 is connected with preceding longitudinal floor beam 11 through threshold connecting panel 7.Passage 13 two ends were connected on the interior threshold 10 of both sides during seat front cross rail 15 was horizontally through with seat after cross member 16, and were connected with middle passage 13, and the operator's compartment chair mounted is on seat front cross rail 15 and seat after cross member 16.Passage reinforcement 17 in middle passage 13 and seat after cross member 16 junctions are provided with is adding the Joint strenght between persistent erection passage 13 and the seat after cross member 16, to bear and to absorb more impact energy.The various structural beams of forward engine room frame assembly and front floor framework assembly are through spot welding or CO
2Be welded into needed each branch unit, again through spot welding or CO
2The weldering mode is welded to form a closed-loop vehicle body framework construction with above-mentioned each branch unit.The longitudinal and cross beam of this body framwork is after making up completion simultaneously; Means through the analysis of CAE simulated crash; The impact energy of coming each structural beams of analytical calculation to absorb and bear; And the form of each beam and position done further optimization and layout adjustment, reach better absorption and disperse the purpose of impact load.
After adopting this structure design; The front shock process in taking place in vehicle body, if impact load is less, can relies on and protect crossbeam 1 load that withstands shocks before the installing type; Absorb impact load through preceding guarantor's crossbeam 1 with energy-absorbing annex fixed thereon; Later stage is protected crossbeam 1 before changing installing type, accomplish the maintenance to vehicle body front structure, reduces the maintenance cost of vehicle body; When anterior collision energy is big; At first utilize the preceding conquassation of protecting crossbeam 1 and forward engine room longeron 2 to be out of shape and absorb a part of impact energy; A unnecessary energy part is delivered on the body top section A post through front deck top longeron 4, a part is delivered on the front floor framework assembly through forward engine room longeron 2 in addition again, and the understructure of forward engine room frame assembly and front floor framework assembly are formed bottom section of body; This part is born most impact energy; The impact energy that passes over from the forward engine room frame assembly mainly through front deck rear portion crossbeam 6, passage 13, preceding longitudinal floor beam 11, threshold connecting panel 7, front deck rear portion stringer 8, gusset bottom threshold 9, interior threshold 10, preceding floor stringer 12 transmit and disperse, this portion of energy pipeline is as shown in Figure 2, transmits and disperses through a plurality of girder construction impact energy that are arranged on operator's compartment; The impact energy transmission channels is more; Energy disperses rationally to have reduced the deflection of operator's compartment, reduced in the collision process injury values to the occupant.
Key of the present invention is the structure of body bottom section skeleton, and vehicle body forefront structure is fixed on preceding guarantor's crossbeam 1 on the forward engine room longeron 2 through several bolts, in conjunction with CAE sunykatuib analysis means, confirms the cross-sectional sizes and the version of front side member, specifically sees Fig. 4; Simultaneously energy-absorbing box position on preceding guarantor's crossbeam 1 and the deformation inductdion groove that forward engine room longeron 2 front portions all are provided with some induce this part conquassation to be out of shape energy-absorbing, and be specifically as shown in Figure 3; Vehicle body operator's compartment bottom skeleton; Make up and form by longeron, preceding floor stringer 12, middle passage 13 under the rear portion of forward engine room longeron 2, front deck rear portion crossbeam 6, threshold connecting panel 7, front deck rear portion stringer 8, gusset bottom threshold 9, interior threshold 10, the preceding floor; Means through the analysis of CAE simulated crash; The impact energy of coming each structural beams of analytical calculation to absorb and bear, and cross-sectional sizes and the position of each beam done further optimization and layout, utilize many girder construction impact energy to carry out multi-channel and absorb, disperse and transmission; Reduce the deflection of operator's compartment, for the occupant reserves valuable living space.
Combine accompanying drawing that the present invention has been carried out exemplary description above; Obviously the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; Or design of the present invention and technical scheme are directly applied to other occasion without improving, all within protection scope of the present invention.
Claims (10)
1. front portion of car body skeleton structure; Comprise vehicle body A post, preceding guarantor's crossbeam, forward engine room frame assembly and front floor framework assembly; Said forward engine room frame assembly comprises the forward engine room longeron; Longitudinal floor beam and bottom threshold before said front floor framework assembly comprises; It is characterized in that: said forward engine room frame assembly comprises that also many are disperseed and transmit the longitudinal and cross beam of collision energy with said forward engine room longeron bonded assembly, said front floor framework assembly also comprise many with said before the longitudinal and cross beam of longitudinal floor beam and dispersion of bottom threshold bonded assembly and transmission collision energy.
2. front portion of car body skeleton structure according to claim 1; It is characterized in that: it is double-decker that the many longitudinal and cross beams that said forward engine room frame assembly comprises form the forward engine room frame assembly; Understructure comprises and said forward engine room longeron bonded assembly water tank cross sill and front deck rear portion crossbeam; Superstructure comprises the front deck top longeron and this front deck top longeron bonded assembly front windshield cross sill that is located at said forward engine room longeron top, and said front deck top longeron is connected with said vehicle body A post.
3. front portion of car body skeleton structure according to claim 2; It is characterized in that: the longitudinal and cross beam that said front floor framework assembly also comprises is middle longitudinally passage and horizontal seat crossbeam; Passage is connected with said front deck rear portion crossbeam in said, and said seat crossbeam comprises seat front cross rail and seat after cross member.
4. front portion of car body skeleton structure according to claim 3 is characterized in that: passage is located at the midway location of said front floor framework assembly in said, and said preceding longitudinal floor beam symmetry is located at the both sides of said middle passage.
5. front portion of car body skeleton structure according to claim 4 is characterized in that: said seat front cross rail and seat after cross member pass said middle passage two ends and are connected on the threshold of said bottom.
6. front portion of car body skeleton structure according to claim 5 is characterized in that: passage and preceding longitudinal floor beam are connected with oblique front deck rear portion stringer in said.
7. front portion of car body skeleton structure according to claim 6 is characterized in that: the outside of passage longitudinally is provided with the preceding floor stringer that fuses with it in said.
8. front portion of car body skeleton structure according to claim 7 is characterized in that: passage reinforcement during passage and said seat after cross member junction are provided with in said.
9. front portion of car body skeleton structure according to claim 8 is characterized in that: said bottom threshold comprises the gusset bottom threshold and inboard interior threshold outside the vehicle body, and threshold is connected with said preceding longitudinal floor beam through the threshold connecting panel in this.
10. according to the arbitrary described front portion of car body skeleton structure of claim 1 to 9, it is characterized in that: before said, be provided with a plurality of deformation inductdion grooves on the energy-absorbing box of guarantor's crossbeam with on the said forward engine room longeron.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110227623 CN102358349B (en) | 2011-08-11 | 2011-08-11 | Front body framework structure of automobile |
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| CN 201110227623 CN102358349B (en) | 2011-08-11 | 2011-08-11 | Front body framework structure of automobile |
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| CN102358349B CN102358349B (en) | 2013-06-12 |
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| CN103770847A (en) * | 2014-02-28 | 2014-05-07 | 奇瑞汽车股份有限公司 | Car body front floor strengthening structure |
| CN103770841A (en) * | 2013-05-27 | 2014-05-07 | 广州汽车集团股份有限公司 | Autobody framework structure |
| CN104309693A (en) * | 2014-09-29 | 2015-01-28 | 上汽通用五菱汽车股份有限公司 | Preposition back driving automobile body |
| CN104590388A (en) * | 2014-12-23 | 2015-05-06 | 奇瑞商用车（安徽）有限公司 | Method for installing automobile body annular path structure |
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| CN114506393A (en) * | 2020-11-17 | 2022-05-17 | 广州汽车集团股份有限公司 | Lower vehicle body assembly |
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Application publication date: 20120222 Assignee: Wuhu Kai wing Automobile Co., Ltd. Assignor: Saic Chery Automobile Co., Ltd. Contract record no.: 2017990000478 Denomination of invention: Front body framework structure of automobile Granted publication date: 20130612 License type: Common License Record date: 20171208 |