CN101209716A - Load bearing type car body - Google Patents
Load bearing type car body Download PDFInfo
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- CN101209716A CN101209716A CNA2006100645505A CN200610064550A CN101209716A CN 101209716 A CN101209716 A CN 101209716A CN A2006100645505 A CNA2006100645505 A CN A2006100645505A CN 200610064550 A CN200610064550 A CN 200610064550A CN 101209716 A CN101209716 A CN 101209716A
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- right vertical
- vertical beam
- left longeron
- longeron
- self
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Abstract
The invention discloses a bearing vehicle body, comprising a vehicle body rear floor and a reinforced beam structure which is fixed on the lower surface of the rear floor; wherein, the reinforced beam structure comprises a left longitudinal beam, a right longitudinal beam, a front transverse beam and an upper transverse beam; the left longitudinal beam and the right longitudinal beam are longitudinally extended along the left frame and the right frame of the panel of the vehicle body rear floor; the front transverse beam is connected with the left longitudinal beam and the right longitudinal beam at the front ends of the left longitudinal beam and the right longitudinal beam; the upper transverse beam is connected with the left longitudinal beam and the right longitudinal beam at the middle part of the left longitudinal beam and the right longitudinal beam. In the bearing vehicle body of the invention, the two longitudinal beams and the two transverse beams form a frame-typed reinforced beam structure which is fixedly connected with the vehicle body rear floor, thus effectively improving the collision-bearing capability of the side and rear of the bearing vehicle body.
Description
Technical field
The present invention relates to a kind of self-supporting body.
Background technology
Self-supporting body constitutes the master with sheet steel in the prior art, and driving engine, suspension etc. is directly installed on the vehicle body.Because traditional self-supporting body is mainly made with sheet steel, sheet steel can be used spot-welded on, is easy to batch manufacturing, and body quality is little, and integrally bending and torsional rigid are big, and car chamber base plate is low, the height of car size is little, but bears the ability of lateral impact power and rear impact power.
Summary of the invention
The purpose of this invention is to provide a kind of self-supporting body, improve the ability that collision is born at side direction and rear.
Technical scheme of the present invention is: a kind of self-supporting body comprises floor behind the vehicle body and is fixed on the strength beam structure of floor, back lower surface that wherein the strength beam structure comprises left longeron, right vertical beam, front cross rail and entablatrance; A left side longeron and right vertical beam floor panel left and right sides framework longitudinal extension behind the vehicle body; Front cross rail is connected left longeron and right vertical beam at the front end of left longeron and right vertical beam; Entablatrance is connected left longeron and right vertical beam at the middle part of left longeron and right vertical beam.
Self-supporting body provided by the invention, two longerons and three crossbeams constitute the strength beam structure of frame-types, effectively improved body side to bearing the ability of collision with the rear.
Also comprise after cross member in the optimized technical scheme, after cross member is connected left longeron and right vertical beam at the postmedian of left longeron and right vertical beam.
Present technique is put the bearing type vehicle body of case, owing to set up after cross member at the vehicle body postmedian, can improve the integral rigidity of vehicle body postmedian, improves the ability of bearing lateral impact.
In the optimized technical scheme, before left longeron and right vertical beam front portion are provided with in brace panel.
Because brace panel in before having set up, each face of preceding interior brace panel and left longeron, right vertical beam front end fits tightly, and increases the stiffness of left longeron and right vertical beam, reduces its in-to-in deflection, has strengthened the ability that left longeron and right vertical beam front end bear lateral impact.
In the optimized technical scheme, left longeron, right vertical beam and entablatrance bonded assembly position raise up.
Adopt the self-supporting body of the technical program, entablatrance and left longeron, right vertical beam and front cross rail have formed a space jointly, to after the person of lining up provide support and protect.
Further in the optimized technical scheme, the high spot of left longeron and right vertical beam is provided with brace panel in the back.
Owing to set up back interior brace panel, near in the back brace panel and left longeron, the right vertical beam high spot each face fits tightly, increase the stiffness of left longeron and right vertical beam, reduce its in-to-in deflection, strengthened the ability that lateral impact is born at left longeron and right vertical beam middle part.
Further in the optimized technical scheme, be provided with interior fagging between the brace panel in left longeron, right vertical beam and the back.
Owing to increased interior fagging, both actv. absorbed the stress that left longeron and right vertical beam knee produce, and had strengthened left longeron and right vertical beam bending resistance, antitorque ability again.
In the optimized technical scheme, the after cross member brace panel is equipped with at the after cross member two ends.
Owing to increased the after cross member brace panel, make the rigidity of after cross member that large increase arranged, further strengthened self-supporting body whole bending resistance, antitorque ability.
In the optimized technical scheme, the front cross rail two ends are connected with left longeron, right vertical beam by preceding fishplate bar.
Owing to set up preceding fishplate bar, make front cross rail more reliable with being connected of left longeron, right vertical beam, guaranteed the bending resistance of self-supporting body single-piece, anti-twisting property.
In the optimized technical scheme, left longeron and right vertical beam aft end face are provided with lower back panel, also are provided with fagging under the lower back panel between lower back panel and left longeron, the right vertical beam, further guarantee the bending resistance of self-supporting body single-piece, anti-twisting property.
Description of drawings
Fig. 1, be embodiment of the invention self-supporting body overall structure scheme drawing.
Fig. 2, be strength beam overall structure scheme drawing in the embodiment of the invention.
Fig. 3, be the assembling scheme drawing of right vertical beam in the embodiment of the invention.
Fig. 4, be the structural representation of left longeron in the embodiment of the invention.
Fig. 5, be the structural representation of front cross rail in the embodiment of the invention.
Fig. 6, be the structural representation of entablatrance in the embodiment of the invention.
Fig. 7, be the scheme drawing of embodiment of the invention middle and rear cross beam structure.
Fig. 8, be in the embodiment of the invention before in the structural representation of brace panel.
Fig. 9, be the structural representation of brace panel in the back in the embodiment of the invention.
Figure 10, be in the embodiment of the invention in the structural representation of fagging.
Figure 11, be the structural representation of embodiment of the invention cover plate.
Figure 12, be in the embodiment of the invention before the structural representation of fishplate bar.
Figure 13, be the structural representation of lower back panel in the embodiment of the invention.
Figure 14, be the structural representation of fagging under the lower back panel in the embodiment of the invention.
The specific embodiment
As shown in Figure 1, the self-supporting body that provides of the embodiment of the invention comprises floor behind the vehicle body and is fixed in the strength beam structure of floor, back lower surface.The strength beam structure comprises left longeron 1, right vertical beam 2, front cross rail 3, entablatrance 4 and after cross member 5 as shown in Figure 2.A left side longeron 1 and right vertical beam 2 fit tightly with back floor panel lower plane the upper surface of the floor panel left and right sides its opening of framework longitudinal extension behind the vehicle body.Front cross rail 3 is connected left longeron 1 and right vertical beam 2 at the front end of left longeron 1 and right vertical beam 2.Entablatrance 4 is connected left longeron 1 and right vertical beam 2 at the middle part of left longeron 1 and right vertical beam 2.The structure of front cross rail 3 as shown in Figure 5.Entablatrance is positioned at middle part, floor, back high spot, and two ends longeron are to the left and right extended and are attached thereto, and fits tightly with back floor panel upper surface; Again with the floor, back under front cross rail to form certain height poor, 430～500 millimeters of two crossbeam interbody spacers.Entablatrance 4 two ends horizontal expansions are connected with the left and right sides, plane framework on the floor, back, have simultaneously formed a space jointly with left longeron 1, right vertical beam 2 and front cross rail 3, to after the person of lining up provide support and protect.The structure of entablatrance 4 as shown in Figure 6.After cross member 5 is connected left longeron 1 and right vertical beam 2 at the postmedian of left longeron 1 and right vertical beam 2.After cross member is positioned at floor panel postmedian below, back, spare tyre supply chamber front portion; Extend at its two ends floor panel left and right sides framework backward, and fishplate bar is connected with left-right longeron after respectively passing through one.After cross member and above-mentioned beam constitute the ruggedized construction of back floor frame, and the spacing with floor, back entablatrance is 430～480 millimeters simultaneously.The structure of after cross member 5 as shown in Figure 7, after cross member brace panel 8 is equipped with at after cross member 5 two ends.The structure of left side longeron 1 as shown in Figure 3.Brace panel 9 in before left side longeron 1 and right vertical beam 2 front portions are provided with.The structure of brace panel 9 as shown in Figure 8 in preceding.Left side longeron 1, right vertical beam 2 and entablatrance 4 bonded assembly positions raise up.Left side longeron 1 and right vertical beam 2 high spots are provided with brace panel 10 in the back.The structure of brace panel 10 as shown in Figure 9 in the back.Fagging 6 in being provided with between brace panel 10 and left longeron 1, the right vertical beam 2 in the back.The structure of interior fagging 6 as shown in figure 10.Brace panel 9, the interior brace panel 10 in back fit tightly with each face of left longeron 1 in preceding, increase the stiffness of left longeron 1, reduce left longeron 1 in-to-in deflection, have strengthened the ability that left longeron 1 bears lateral impact.Front cross rail 3 two ends are connected with left longeron 1, right vertical beam 2 by preceding fishplate bar 12.The structure of preceding fishplate bar 12 as shown in figure 12.The leading portion top of left side longeron 1 and right vertical beam 2 also is provided with cover plate 11, and the structure of cover plate 11 as shown in figure 11.Left side longeron 1 and right vertical beam 2 aft end faces are provided with lower back panel 13.The structure of lower back panel 13 as shown in figure 13.Also be provided with fagging 7 under the lower back panel between lower back panel 13 and left longeron 1, right vertical beam 2 aft end faces.The structure of fagging 7 as shown in figure 14 under the lower back panel.Fig. 3 is the structural representation of left longeron 1.At left longeron 1 front end, leave the position of matching with preceding interior brace panel 9; Near the high spot of middle part, that does not wait at interval is equipped with 4 interior faggings 6.Before in brace panel 9 as shown in Figure 8, its transversal surface is the U type, opening direction is identical with the longeron opening direction.In the present embodiment, fishplate bar 6 (as shown in figure 12) takes concerted action crossbeam and longeron front cross rail 4 and left longeron 1, right vertical beam 2 front end leak-tight joints before using, and has well improved car load middle part intensity laterally and longitudinally.Fig. 4 is the structural representation of right vertical beam.The structure of right vertical beam 2 as shown in Figure 4, right vertical beam 2 and left longeron 1 structural similitude are no longer described at this.While is at the high spot of left longeron 1, apart from the four interior faggings 9 that are provided with that do not wait, brace panel 10 inside grooves non-homogeneous arrangement at interval in the back, every interior fagging is at interval between 120～220 millimeters, so both actv. absorbed the stress that left longeron 1 knee produces, and had strengthened left longeron 1 and right vertical beam 2 bending resistances, antitorque ability again.Left side longeron 1 led to respectively a preceding fishplate bar 6 with right vertical beam 2 leading sections and was connected with front cross rail 3.The structure of preceding fishplate bar 12 as shown in figure 12.
For auto body, the relation by vehicle body and vehicle frame can be divided into self-supporting body and body-chassis frame construction usually, the former and subframe weld together, and common bearing load, general car, passenger vehicle are used it more; And the latter's vehicle body separates with vehicle frame, the independent assembly of respectively doing for oneself, and vehicle body connects to ground by suspending, and is used for lorry and luxury car more.The invention belongs to a kind of of self-supporting body, its longeron, crossbeam are welded in respectively on the floor panel upper and lower surface of back.The embodiment of the invention is at the deficiencies in the prior art; a kind of self-supporting body simple in structure, well behaved is provided; to increase the bending stiffness and the torsional rigid of automobile; improve the ability that automobile absorbs the impulsive force that is produced when side or rear being collided, better protection passenger and be positioned at the fuel tank at girder construction middle part.
Because the rear portion is bigger for the influence of car comfort and road-holding property, must adopt high-intensity rear portion body frame structure for automotive just to help to alleviate the solution of the problems such as stability of vibrations, inclination such as alleviation.The main effect of crossbeam is to connect left longeron 1 and right vertical beam 2, to constitute the fit back base plate strength beam structure of a frame-type, guarantees that vehicle frame has enough transverse strengths.As making vehicle frame produce the stability that bigger flexure deformation influences vehicle because of the unequal reason of road, suitable crossbeam is set avoids the automobile get out of hand, thereby avoided the generation of grave accident, therefore at self-supporting body of the present invention, three crossbeams have been arranged in this section, be respectively front cross rail 3, entablatrance 4 and after cross member 5, thereby netted framework producing, is laterally or longitudinal strength all is further improved.
In automobile design, not only to consider and protect occupant's safety; Also to consider the complete of automotive interior parts.Particularly below the projection of middle part, floor, back, that is that subframe and Fuel Tank place are installed.In case side direction or rearward collision take place under the prerequisite of considering personal security, the more important thing is the Fuel Tank that protects below, middle part, floor, back.Because dress is inflammable and explosive chemical fuel in the Fuel Tank, explosion caused consequence is with hardly imaginable in case the generation that meets accident is revealed.Therefore in strength beam structure provided by the invention, when the broadside impact of vehicle and the impact force action in the rearward collision in Liang Shangshi, crossbeam, longeron and inner member energy actv. are with its decomposition, absorption.Because the inner brace panel of longeron, interior fagging have increased the rigidity of floor panel along the direction of compressive load.Improved like this in broadside impact, the rigidity of longeron down along about the back floor of floor panel left and right sides framework longitudinal extension, indirect raising the rigidity of back floor panel opposing impulsive force.The rigidity that longeron increases under the back floor has prevented to form tangible flexural deformation in floor panel, so just limited and the bending compression distortion owing to impact energy of the left and right sides, floor, back framework.Therefore, limited the amount of retreating of back floor panel left and right sides framework, and kept and the coupled condition of back between the floor panel.
The forward and backward two sections rigidity of longeron is all bigger down about back floor, and longeron distortion down about floor, most of back (crooked and reverse) all concentrates on the vehicle frame middle part, so this section must have certain flexible, to play buffer action, simultaneously also can avoid stress concentration, eliminate partial failure's phenomenon.Therefore, floor frame is reinforced in this section and has only been arranged a crossbeam behind the design-calculated.Fixing general riveting, welding process and the Bolt Connection method of adopting of crossbeam and longeron.It is low that rivet connects cost, be suitable for stock production, and the distortion of vehicle frame is little, and present domestic heavy motor vehicle vehicle frame mainly adopts this kind method; Welding can guarantee very high bending stiffness and connect firmly, and can guarantee very high precision and processing request; Bolt Connection mainly is used on some parts that need exchange or dismantle, and shortcoming is that long-term use is loosening easily, can adopt the method that is coated with bolted glue and adopts self lock nut to solve the problem of bolt looseness at key position.The design adopts riveting for connecting panel and longeron, adopts welding process for crossbeam and connecting panel.Crossbeam is best to be designed to rectilinear effect, generally makes simple straight trough shape.But in order to improve the rigidity of crossbeam, the section of crossbeam can adopt pipe or box section sometimes.In order to dodge parts crossbeams such as transmission shaft can not be designed to straight beam the time, generally do overarching, the mild transition but will try one's best in the knee is to avoid stress concentration.Back towing hook can be installed on the after cross member, and after cross member will bear the application force that towing hook transmits, and strengthens with the angle brace brace panel.Therefore in the design, brace panel is installed at the after cross member two ends under the floor, back.
Load on the vehicle frame generally is mainly static weight, symmetrical vertical live load and antisymmetric live load.When static weight was meant vehicle stationary, axle spring was with the load on top.The symmetrical vertical live load is that automobile produces when travelling with the higher speed of a motor vehicle on smooth road, its size is relevant with the vertical shake acceleration/accel, with act on vehicle body after on the floor frame ruggedized construction static weight and distribute relevant, the ground-surface application force makes this frame strengthening structure bear the symmetrical vertical live load, and this live load makes this framed structure produce flexural deformation.Antisymmetric live load is that automobile produces when rugged travels down, this moment, the several wheels in front and back of automobile may be not at grade, down longeron is together crooked together with vehicle body about the floor, back thereby make, about the degree of its size and road injustice and vehicle body, floor and floor, back under the rigidity of longeron relevant.This live load can make vehicle frame produce torsional deflection.Other load is as turning to centrifugal force load, glancing impact force of inertia load, because the loading line does not make longeron produce additional local moment of torsion by the flexural center (as fuel tank, spare tyre and suspension etc.) in longeron cross section.So in the design's structure, brace panel and interior fagging in install at the weak link place, middle part of longeron down about the floor, back, thus reach the effect that improves local stiffness.
Because body frame structure for automotive is symmetrical, the stressed of left-right longeron is more or less the same, so think that longeron is the single supported beam that is bearing in the automobile antero posterior axis; About spring carried mass during empty wagons (quality that comprises vehicle frame self) is evenly distributed on the total length of two longerons.Its value can roughly be calculated according to the statistics of car chassis structure, and generally for lilliput car, spring carried mass is about the automobile sole mass; The capacity weight of automobile is evenly distributed on the compartment total length; All application forces are the flexural center by the cross section all, in fact, some position of longeron can produce local torsion because overhanging parts (as fuel tank, storage battery etc.) are installed, and usually at crossbeam of this arrangement, makes this reversing of longeron to be become moment of flexure to crossbeam when designing.According to the above hypothesis, make longeron and crossbeam by a statically indeterminate plane frame structure, simplifying becomes a statically determimate structure that is positioned on the bearing.The used material of automobile should have sufficiently high yield limit and fatigue limit, low stress concentration sensitivity, good cold stamping performance and welding performance simultaneously.Low-carbon (LC) and medium carbon low alloy steel plate can satisfy these requirements.The self-supporting body that the embodiment of the invention provides; comprise the strength beam of forming framed structure by two longerons, three crossbeams; and brace panel, interior fagging be installed in longeron; actv. has strengthened the rigidity of self-supporting body; can be in the side of vehicle or rear when being collided; better protection passenger and be positioned at the fuel tank at girder construction middle part has improved floor cushioning performance when vehicle ' simultaneously.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. self-supporting body comprises floor behind the vehicle body, it is characterized in that also comprising the strength beam structure;
The floor is connected behind described strength beam structure and the vehicle body, comprises left longeron (1), right vertical beam (2), front cross rail (3) and entablatrance (4); Described left longeron (1) and right vertical beam (2) left and right sides, floor framework longitudinal extension behind the vehicle body; Described front cross rail (3) is connected left longeron (1) and right vertical beam (2) at the front end of left longeron (1) and right vertical beam (2); Described entablatrance (4) is connected left longeron (1) and right vertical beam (2) at the middle part of left longeron (1) and right vertical beam (2).
2. self-supporting body according to claim 1 is characterized in that also comprising after cross member (5), and described after cross member (5) is positioned at the vehicle body postmedian, and two ends are connected with left longeron (1), right vertical beam (2) respectively.
3. self-supporting body according to claim 1 is characterized in that described left longeron (1) and right vertical beam (2) front portion are provided with preceding interior brace panel (9).
4. self-supporting body according to claim 1 is characterized in that described left longeron (1), right vertical beam (2) raise up with entablatrance (4) bonded assembly position.
5. self-supporting body according to claim 3 is characterized in that described left longeron (1) and right vertical beam (2) high spot inside are provided with brace panel (10) in the back.
6. self-supporting body according to claim 4 is characterized in that being provided with interior fagging (6) between the brace panel (10) in described left longeron (1) and right vertical beam (2) and the back.
7. self-supporting body according to claim 1 is characterized in that described after cross member (5) two ends are provided with after cross member brace panel (8).
8. self-supporting body according to claim 1 is characterized in that described front cross rail (3) two ends are connected with left longeron (1), right vertical beam (2) by preceding fishplate bar (12) respectively.
9. self-supporting body according to claim 1 is characterized in that described left longeron (1) and right vertical beam (2) aft end face are provided with lower back panel (13).
10. self-supporting body according to claim 1 is characterized in that also being provided with fagging under the lower back panel (7) between described left longeron (1) and right vertical beam (2) aft end face and the lower back panel (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100645505A CN101209716A (en) | 2006-12-27 | 2006-12-27 | Load bearing type car body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100645505A CN101209716A (en) | 2006-12-27 | 2006-12-27 | Load bearing type car body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101209716A true CN101209716A (en) | 2008-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100645505A Pending CN101209716A (en) | 2006-12-27 | 2006-12-27 | Load bearing type car body |
Country Status (1)
| Country | Link |
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| CN (1) | CN101209716A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105313980A (en) * | 2014-07-31 | 2016-02-10 | 长城汽车股份有限公司 | Vehicle and bodywork for same |
| CN108045442A (en) * | 2017-12-20 | 2018-05-18 | 广州汽车集团股份有限公司 | Floor frame structure after a kind of vehicle body |
| WO2019001530A1 (en) * | 2017-06-30 | 2019-01-03 | 比亚迪股份有限公司 | Electric automobile and body structure thereof |
| CN109204533A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Body structure and vehicle |
| CN109689483B (en) * | 2016-08-27 | 2021-08-13 | 戴姆勒股份公司 | Body for a passenger vehicle |
-
2006
- 2006-12-27 CN CNA2006100645505A patent/CN101209716A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105313980A (en) * | 2014-07-31 | 2016-02-10 | 长城汽车股份有限公司 | Vehicle and bodywork for same |
| CN109689483B (en) * | 2016-08-27 | 2021-08-13 | 戴姆勒股份公司 | Body for a passenger vehicle |
| US11242089B2 (en) | 2016-08-27 | 2022-02-08 | Daimler Ag | Chassis for a passenger car |
| WO2019001530A1 (en) * | 2017-06-30 | 2019-01-03 | 比亚迪股份有限公司 | Electric automobile and body structure thereof |
| CN109204533A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Body structure and vehicle |
| CN109204533B (en) * | 2017-06-30 | 2021-09-03 | 比亚迪股份有限公司 | Vehicle body structure and vehicle |
| US11161401B2 (en) | 2017-06-30 | 2021-11-02 | Byd Company Limited | Electric vehicle and vehicle body structure of electric vehicle |
| CN108045442A (en) * | 2017-12-20 | 2018-05-18 | 广州汽车集团股份有限公司 | Floor frame structure after a kind of vehicle body |
| CN108045442B (en) * | 2017-12-20 | 2023-09-01 | 广州汽车集团股份有限公司 | Floor frame construction behind automobile body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen BYD Auto Co., Ltd. Assignor: Biyadi Co., Ltd. Contract fulfillment period: 2008.4.25 to 2016.7.11 contract change Contract record no.: 2008440000079 Denomination of invention: Independent rear suspension mounting base assembly for monocoque body License type: General permission Record date: 2008.5.13 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: COMMON LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.4.25 TO 2016.7.11 Name of requester: BIYADI AUTOMOBILE CO., LTD., SHENZHEN CITY Effective date: 20080513 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080702 |