CN102975770B - Automotive floor panel - Google Patents

Automotive floor panel Download PDF

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Publication number
CN102975770B
CN102975770B CN201210497119.5A CN201210497119A CN102975770B CN 102975770 B CN102975770 B CN 102975770B CN 201210497119 A CN201210497119 A CN 201210497119A CN 102975770 B CN102975770 B CN 102975770B
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CN
China
Prior art keywords
longeron
automotive floor
longerons
floor panel
sub
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 - Fee Related
Application number
CN201210497119.5A
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Chinese (zh)
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CN102975770A (en
Inventor
黄勇
申力伟
孙坤峰
贺志杰
李同军
李松
许明
邹云生
卢曦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Boxin Automotive Parts Co Ltd
Original Assignee
Tianjin Boxin Automotive Parts Co Ltd
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Publication date
Application filed by Tianjin Boxin Automotive Parts Co Ltd filed Critical Tianjin Boxin Automotive Parts Co Ltd
Priority to CN201210497119.5A priority Critical patent/CN102975770B/en
Publication of CN102975770A publication Critical patent/CN102975770A/en
Application granted granted Critical
Publication of CN102975770B publication Critical patent/CN102975770B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a kind of automotive floor panel, relate to monocoque body, be used for solving existing Automotive floor bearer when crashing to the problem that the protection of occupant safety is poor. Described Automotive floor bearer, including symmetrically arranged two longerons, described longeron is along the length direction longitudinal extension of automotive floor panel, two root longerons also it are symmetrically arranged with between two longerons, described sub-longeron is along the length direction longitudinal extension of automotive floor panel, and adjacent longeron is connected by tie-beam in front end with sub-longeron. Described automotive floor panel includes floor body and the above-mentioned Automotive floor bearer being welded on floor body surface. The present invention is for the automobile of monocoque body.

Description

Automotive floor panel
Technical field
The present invention relates to monocoque body, particularly relate to a kind of Automotive floor bearer and there is the automotive floor panel of this Automotive floor bearer.
Background technology
Body of a motor car is generally divided into monocoque body and separate frame construction; separate frame construction refers to that vehicle frame carries whole car body; electromotor, suspension and vehicle body are all arranged on vehicle frame; the vibration of vehicle frame is passed on vehicle body by flexible member, and major part vibration is reduced or eliminated, and when colliding, vehicle frame can absorb major part impulsive force; vehicle body is played a protective role; therefore compartment deformation is little, and stationarity and safety are good, and in railway carriage or compartment, noise is low. But this separate frame construction is heavier, quality is big, and automobile barycenter is high, and High-speed running stability is poor. Monocoque body refers to that vehicle body carries whole car body, and its vehicle body load passes to wheel by draft hitch. It is little, highly low that monocoque body has quality, and easily, the advantages such as High-speed running stability is good, therefore major part car all adopts this body structure at present in assembling.
The contribution of the strength and stiffness of whole vehicle body is occupied critically important status by the joist structure of monocoque body, plays the effect of dispersion, transmission colliding forces, absorption collision energy particularly in vehicle body when colliding. Therefore, the joist structural design of monocoque body is particularly important. Joist structure of the prior art is usually the impact force of automobile and passes to symmetrically arranged two longerons by collision prevention girders, namely impact force is transmitted by two-stage, the joist of this structure can cause the power that automobile front wall bears relatively larger, producing creep deformation can be relatively larger, it is easy to make occupant injured. Therefore design effective joist and to solve the technical problem that protecting when crashing the safety of occupant to become those skilled in the art to greatest extent.
Summary of the invention
The present invention provides a kind of Automotive floor bearer and has the automotive floor panel of this Automotive floor bearer, is used for solving existing Automotive floor bearer when crashing to the problem that the protection of occupant safety is poor.
For reaching above-mentioned purpose, the embodiment of Automotive floor bearer provided by the invention adopts the following technical scheme that
A kind of Automotive floor bearer, including symmetrically arranged two longerons, described longeron is along the length direction longitudinal extension of automotive floor panel, it is characterized in that, two root longerons also it are symmetrically arranged with between two longerons, described sub-longeron is along the length direction longitudinal extension of automotive floor panel, and adjacent longeron is connected by tie-beam in front end with sub-longeron.
Further, the front end of described sub-longeron is rearward in the front end of described longeron.
Further, described Automotive floor bearer also includes the front beam and the rear cross beam that extend along the width of automotive floor panel, and described front beam connects two longerons in front end, and described rear cross beam connects two longerons in rear end.
Further, described Automotive floor bearer also includes being arranged on the intermediate transverse girder installing seat position, described intermediate transverse girder is connected with two root longerons respectively along width extension and its two ends of automotive floor panel, or the two ends of described intermediate transverse girder are connected with sub-longeron with adjacent longeron respectively.
Further, it is located at the described intermediate transverse girder installing front-row seats position and is located between two root longerons, be located at the described intermediate transverse girder installing back seat position and be respectively provided between adjacent longeron and sub-longeron and between two root longerons.
Preferably, described sub-longeron be arranged in parallel.
Preferably, the front end of described longeron is connected to front longitudinal, and it is one-body molded that described front longitudinal is connected to collision prevention girders, described front longitudinal and described longeron.
Automotive floor bearer provided by the invention, owing to being symmetrical arranged two root longerons 30 between two longerons, and adjacent longeron is connected by tie-beam in front end with sub-longeron. Therefore, when automobile generation head-on crash, the connected beam of impact force from collision prevention girders is divided into Liang Ge branch, and namely two longerons and two root longerons disperse the impact force from collision prevention girders. Being disperseed impact force relative to traditional by two longerons, the Automotive floor bearer in the present invention reduces the impact force that every longeron bears, and therefore the impact force suffered by automobile front wall part is also weakened accordingly, is effectively protected the safety of occupant.
The embodiment of automotive floor panel provided by the invention adopts the following technical scheme that
A kind of automotive floor panel, including floor body and the above-mentioned Automotive floor bearer being welded on floor body surface.
Further, the middle bent of described floor body forms the centre gangway of longitudinal extension, and the sub-longeron of described Automotive floor bearer is the threshold that described centre gangway both sides are formed.
Preferably, described floor body is integrated punch forming.
The automotive floor panel that the embodiment of the present invention provides; owing to have employed above-mentioned Automotive floor bearer; therefore when collision scenario; impact force from collision prevention girders can be divided into four branches by Automotive floor bearer; impact force is disperseed by two longerons relative to traditional; automotive floor panel in the present invention makes the impact force suffered by automobile front wall part be weakened accordingly, is effectively protected the safety of occupant.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required for embodiment is briefly described.
Fig. 1 is the structural representation of Automotive floor bearer provided by the invention;
Fig. 2 is the sketch shown in Fig. 1;
Fig. 3 is energy transmission schematic diagram when colliding of the Automotive floor bearer shown in Fig. 1;
Fig. 4 is the structural representation of automotive floor panel provided by the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, broadly fall into the scope of protection of the invention.
As it is shown in figure 1, be a specific embodiment of Automotive floor bearer provided by the invention, it is connected with collision prevention girders 10 by front longitudinal 20a including symmetrically arranged two longeron 20b, longeron 20b. Longeron 20b is along the length direction longitudinal extension (i.e. left and right directions as shown in Figure 1) of automotive floor panel, two root longerons 30 also it are symmetrically arranged with between two longeron 20b, sub-longeron 30 is along the length direction longitudinal extension of automotive floor panel, and adjacent longeron 20b is connected by tie-beam 40 in front end with sub-longeron 30.
Automotive floor bearer provided by the invention, owing to being symmetrical arranged two root longerons 30 between two longeron 20b, and adjacent longeron 20b is connected by tie-beam 40 in front end with sub-longeron 30. Therefore when automobile generation head-on crash, impact force from collision prevention girders 10 is directly transferred to front longitudinal 20a and is divided into Liang Ge branch in the front end of every longeron 20b by tie-beam 40, and namely two longeron 20b and two root longerons 30 disperse the impact force from collision prevention girders 10. Being disperseed impact force relative to traditional by two longerons, the Automotive floor bearer in the present invention reduces the impact force that every longeron bears, and therefore the impact force suffered by automobile front wall part is also weakened accordingly, is effectively protected the safety of occupant. And set up two root longerons 30 and also can improve the strength and stiffness of entirely plate-girder, increase energy absorption, improve its crashproof ability.
Need it is further noted that the two longeron 20b being oppositely arranged can be parallel for above-described embodiment, it is also possible to move closer to or away from sub-longeron 30 in the process extended, can farthest weaken or to disperse impact force to be as the criterion. In order to simplify moulding process, sub-longeron 30 can preferred parallel be arranged.
As can be seen from Figure 3; collision energy is divided three grades and absorbs step by step by the Automotive floor bearer that the embodiment of the present invention provides; and traditional Automotive floor bearer is point two-stage absorption (i.e. collision prevention girders and longeron); therefore the Automotive floor bearer of the present invention is more abundant to the absorption of collision energy when collision scenario, more can effectively protect the safety of occupant.
As depicted in figs. 1 and 2, as the further improvement of above-described embodiment, the front end of sub-longeron 30 is rearward in the front end of longeron 20b. Such tie-beam 40 is obliquely installed, and the angle of longeron 20b and tie-beam 40 reduces, and the impact force from front longitudinal 20a can more steadily be rapidly transferred on longeron 20b and sub-longeron 30, effectively reduces the power suffered by automobile front wall.
As depicted in figs. 1 and 2, further improvement as above-described embodiment, Automotive floor bearer in the present invention also includes the front beam 50 and the rear cross beam 60 that extend along the width of automotive floor panel, and front beam 50 connects two longeron 20b in front end, and rear cross beam 60 connects two longeron 20b in rear end. Such front beam 50, rear cross beam 60 and two longeron 20b form a closed-loop, make the strength and stiffness of joist be improved, and the transmission also making power is more stable.
As depicted in figs. 1 and 2, as the further improvement of above-described embodiment, above-mentioned Automotive floor bearer also includes being arranged on the intermediate transverse girder 70a~70f installing seat position, and intermediate transverse girder 70a~70f extends along the width of automotive floor panel. Specifically, it is located at the intermediate transverse girder 70a~70c installing front-row seats position to be located between two root longerons 30, is located at the intermediate transverse girder 70d~70f installing back seat position and is respectively provided between adjacent longeron 20b and sub-longeron 30 and between two root longerons 30. And the two ends of intermediate transverse girder 70a~70f are connected with longeron 20b and/or sub-longeron 30 respectively. Such intermediate transverse girder 70a~70f and connected longeron 20b and/or sub-longeron 30 and adjacent front beam 50, rear cross beam 60, tie-beam 40 or intermediate transverse girder form little closed-loop, improving the strength and stiffness of joist further, the transmission simultaneously also making impact force further is more stable.
And the impact force born due to front-row seats is relatively larger, therefore can by install front-row seats position intermediate transverse girder 70a~70c concentrated setting between sub-longeron 30 effectively to weaken impact force, and relatively to bear impact force smaller at back seat place, and more more dispersed, therefore the intermediate transverse girder 70d~70f installing back seat position can be distributed between the longeron 20b of both sides and sub-longeron 30. The present invention is not limited to this, and described intermediate transverse girder can also take other arrangement being conducive to weakening impact force.
As the further improvement of above-described embodiment, described front longitudinal and longeron are one-body molded. Simplifying moulding process so on the one hand, front longitudinal and longeron are one-body molded on the other hand, and the concordance of product structure is better, when being collided, it is possible to effectively weaken impact force.
As shown in Figure 4, the embodiment of the present invention additionally provides a kind of automotive floor panel, including floor body 100 and the above-mentioned Automotive floor bearer 200 being welded on floor body 100 surface.
The automotive floor panel that the embodiment of the present invention provides; owing to have employed above-mentioned Automotive floor bearer; therefore when collision scenario; impact force from collision prevention girders 10 can be divided into four branches by Automotive floor bearer 200; impact force is disperseed by two longerons relative to traditional; automotive floor panel in the present invention makes the impact force suffered by automobile front wall part be weakened accordingly, is effectively protected the safety of occupant.
As shown in Figure 1 and Figure 4, as the further improvement of above-described embodiment, the middle bent of floor body 100 forms the centre gangway 100a of longitudinal extension, and the sub-longeron 30 of Automotive floor bearer 200 is the threshold that centre gangway 100a both sides are formed. Centre gangway 100a arranges the strength and stiffness that can improve floor body 100 further, it is possible to so that the thickness of floor body 100 reduces accordingly, alleviate the weight of car body. Sub-longeron 20 adopts the threshold that floor body 100 both sides are formed, simple, reduces welding operation. Certain sub-longeron 30 can also pass through other welding structural element on described threshold and be formed.
Preferably, described floor body is integrated punch forming, and joist is welded on the bottom surface of floor body by spot welding or other welding manner. Moulding process is simple, and homogeneity of product is better.
The above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.

Claims (4)

1. an automotive floor panel, it is characterised in that include floor body and the Automotive floor bearer being welded on floor body surface;
Described Automotive floor bearer, including symmetrically arranged two longerons, described longeron is along the length direction longitudinal extension of automotive floor panel, two root longerons also it are symmetrically arranged with between two longerons, described sub-longeron is along the length direction longitudinal extension of automotive floor panel, and adjacent longeron is connected by tie-beam in front end with sub-longeron;
The front end of described sub-longeron is rearward in the front end of described longeron;
Also including the front beam and the rear cross beam that extend along the width of automotive floor panel, described front beam connects two longerons in front end, and described rear cross beam connects two longerons in rear end;
Also include being arranged on and front-row seats position is installed and the intermediate transverse girder of back seat position is installed, described intermediate transverse girder extends along the width of automotive floor panel, it is located at the described intermediate transverse girder installing front-row seats position to be located between two root longerons, is located at the described intermediate transverse girder installing back seat position and is respectively provided between adjacent longeron and sub-longeron and between two root longerons;
The middle bent of described floor body forms the centre gangway of longitudinal extension, and the sub-longeron of described Automotive floor bearer is the threshold that described centre gangway both sides are formed.
2. automotive floor panel according to claim 1, it is characterised in that described sub-longeron be arranged in parallel.
3. automotive floor panel according to claim 2, it is characterised in that the front end of described longeron is connected to front longitudinal, it is one-body molded that described front longitudinal is connected to collision prevention girders, described front longitudinal and described longeron.
4. the automotive floor panel according to any one of claim 1-3, it is characterised in that described floor body is integrated punch forming.
CN201210497119.5A 2012-11-27 2012-11-27 Automotive floor panel Expired - Fee Related CN102975770B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210497119.5A CN102975770B (en) 2012-11-27 2012-11-27 Automotive floor panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210497119.5A CN102975770B (en) 2012-11-27 2012-11-27 Automotive floor panel

Publications (2)

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CN102975770A CN102975770A (en) 2013-03-20
CN102975770B true CN102975770B (en) 2016-06-15

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106143626B (en) * 2016-07-29 2019-02-12 奇瑞新能源汽车技术有限公司 Electric car lower front body structure
CN110509999A (en) * 2019-10-08 2019-11-29 湖南恒润汽车有限公司 A kind of passenger car lower body structure
CN114802485A (en) * 2022-05-30 2022-07-29 浙江吉利控股集团有限公司 Vehicle body floor assembly and vehicle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004314663A (en) * 2003-04-11 2004-11-11 Toyota Motor Corp Car body structure
JP4621982B2 (en) * 2005-09-22 2011-02-02 マツダ株式会社 Lower body structure
TWI361766B (en) * 2007-07-12 2012-04-11 Honda Motor Co Ltd Vehicle body frame structure
JP5352682B2 (en) * 2009-12-16 2013-11-27 本田技研工業株式会社 Body floor structure
JP5471559B2 (en) * 2010-02-15 2014-04-16 マツダ株式会社 Automobile undercarriage
CN101823509B (en) * 2010-04-14 2011-12-14 奇瑞汽车股份有限公司 Automobile front floor framework
DE102010050824A1 (en) * 2010-11-09 2012-05-10 Volkswagen Aktiengesellschaft Cross member arrangement, in particular Bodenquerträger- and / or Fußraumquerträgeranordnung, on a vehicle body, in particular on a motor vehicle body
CN202022248U (en) * 2011-03-28 2011-11-02 三一重工股份有限公司 Automobile cab floor skeleton, automobile cab and automobile
CN202243672U (en) * 2011-08-25 2012-05-30 众泰控股集团有限公司 Automobile body floor structure

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