CN101898584B - Back structure of vehicle body - Google Patents
Back structure of vehicle body Download PDFInfo
- Publication number
- CN101898584B CN101898584B CN2010101649321A CN201010164932A CN101898584B CN 101898584 B CN101898584 B CN 101898584B CN 2010101649321 A CN2010101649321 A CN 2010101649321A CN 201010164932 A CN201010164932 A CN 201010164932A CN 101898584 B CN101898584 B CN 101898584B
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- cross member
- vehicle body
- bar
- back structure
- carriage
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The present invention provides a back structure of a vehicle body, capable of generating a great resisting force against collision, and restraining number and weight of parts. The back structure of the vehicle body includes left and right back vehicle frames (14, 16) for supporting a cantalever extending on the back of the vehicle body front and back; a rear cross beam (17) arranged on the back vehicle frames (14, 16) in a striding mode, the rear cross beam (17) and a center cross beam (13) arranged on front of the rear cross beam (17) are linked by a box protection lever (18) extending back and front and bending downwards, a back end part (18d) of the box protection lever (18) is covered by a support bracket (27) from the lower side and is fastened on the rear cross beam (17) through the support bracket (27).
Description
Technical field
The present invention relates to carry out the back structure of vehicle body of improvement to rear collision.
Background technology
As existing back structure of vehicle body, the known structure that the front and back of body bottom section is linked with retainer belt with Fuel Tank is (for example, with reference to patent documentation 1.) and have structure with respect to the vehicle frame of fore-and-aft direction tilted configuration (for example, with reference to patent documentation 2 at body bottom section.)。
With following Fig. 9 Fig. 9 of patent documentation 1 is described.Wherein, Reference numeral is changed.
The chassis 102 that before and after being equipped with on the lower surface of the noseplate portion 101 of vehicle body, extends; Bottom in the back base plate 103 at the rear that is disposed at noseplate portion 101 is equipped with the upwardly extending crossbeam 104 in overall width side; Below the base plate 103 of back, dispose Fuel Tank 106; In order keeping, on chassis 102 and crossbeam 104, to stride and be provided with retainer belt 107 from the below to this Fuel Tank 106.
With following Figure 10 Fig. 1 of patent documentation 2 is described.Wherein, Reference numeral is changed.
About following longeron 111,111 on stride and be provided with upwardly extending centre cross member 112 in overall width side; Stride on the back vehicle frame 113,113 about under being attached on the rear end of longeron 111,111 and be provided with the upwardly extending crossbeam 114 in overall width side, cabinet frame 116,116 is to be crossed on down the central portion of longeron 111,111 and crossbeam 114 with respect to fore-and-aft direction bevelled mode.
Patent documentation 1: TOHKEMY 2006-96185 communique
Patent documentation 2: TOHKEMY 2008-56189 communique
In patent documentation shown in Figure 91, retainer belt 107 is laminal parts that Fuel Tank 106 is kept, and can't produce big resistibility to the impact load of rear collision.
In patent documentation shown in Figure 10 2; Cabinet frame 116,116 has the loading transfer function of the following longeron 111,111 from about the mediad of crossbeam 114; To rear collision is actv. mechanism, but pair of right and left need be set, and can cause the increase of part number, weight.
Summary of the invention
The object of the present invention is to provide a kind of back structure of vehicle body, make it produce big resistibility to the impact load of rear collision, and, the increase of part number, weight can be suppressed.
The invention of technical scheme 1 is a kind of back structure of vehicle body, has: the back vehicle frame of pair of right and left, support the cantilever that before and after the rear portion of vehicle body, extends; After cross member; Be crossed on these back vehicle frames, it is characterized in that, extend the bar that also bends to convex downwards through front and back after cross member and the centre cross member that is located at this after cross member the place ahead are linked; The rearward end of this bar is encased from the below with carriage, and is fastened on the after cross member through carriage.
Extending the bar that also bends to convex downwards through front and back links after cross member and centre cross member.
When on the vehicle body rear collision taking place, vehicle frame acts on bar via after cross member to impact load from the back, and this impact load is passed to Vehicular side body, body forward structure from bar via centre cross member.
On bar, produce resistibility, can suppress the distortion of after cross member to impact load.
In addition, because bar bends to convex downwards, so can distortion downwards under the effect of impact load.
Owing to encase from the below with the rearward end of carriage with bar, therefore, bar and after cross member combine via carriage securely, and, can suppress the deflection of bar.
The invention of technical scheme 2 is characterised in that bar is configured in the below of the Fuel Tank of being located at body bottom section.
Through bar, can prevent the interference to Fuel Tank from the vehicle body below.
(invention effect)
In the invention of technical scheme 1; Because also bend to the centre cross member binding of the bar of convex with after cross member and the place ahead that is located at this after cross member downwards through the front and back extension, the rearward end of this bar is encased from the below with carriage, and is fastened on the after cross member through carriage; Therefore; Through linking after cross member and centre cross member with bar, owing to be created in the resistibility on the length direction of bar during rear collision, so can make the distortion of after cross member littler.
Therefore, intensity, the rigidity of after cross member, back vehicle frame can be reduced, lightweight can be sought.
In addition, bend to convex downwards, when effect on the length direction at bar has load, bar is out of shape downwards, needn't worry that bar boosts Fuel Tank through making bar.
And owing to the rearward end of the mode anchorage bar that encases from the below with the employing carriage, therefore, the enough carriages of ability are firmly fastened to the rearward end of bar on after cross member, and, can suppress the deflection of bar, can reduce the distortion of bar.
In the invention of technical scheme 2, because bar is configured in the below of the Fuel Tank of being located at body bottom section, therefore, can enough bar protection Fuel Tanks.In addition, the strengthening part of the enough bar double as body bottom sections of ability and the guard block of Fuel Tank can reduce the part number, can cost-cutting.
Description of drawings
Fig. 1 is the block diagram of expression back structure of vehicle body of the present invention.
Fig. 2 is the lateral plan of expression back structure of vehicle body of the present invention.
Fig. 3 is the upward view of expression back structure of vehicle body of the present invention.
Fig. 4 is the lateral plan of expression bar of the present invention.
Fig. 5 be expression bar of the present invention two ends installation constitution want portion's block diagram.
Fig. 6 is first action diagram of the effect of expression back structure of vehicle body of the present invention.
Fig. 7 is second action diagram of the effect of expression back structure of vehicle body of the present invention.
Fig. 8 is that the part of expression back structure of vehicle body of the present invention is the 3rd action diagram of the effect of after cross member and case fender rod.
Fig. 9 is the cutaway view of the existing back structure of vehicle body of expression.
Figure 10 be the existing back structure of vehicle body of expression want portion's upward view.
(description of reference numerals)
13 centre cross members
14,16 back vehicle frames
17 after cross members
18 bars (case fender rod)
The 18d rearward end
21 Fuel Tanks
27 carriages (frame support bracket)
The specific embodiment
Below, according to accompanying drawing embodiment of the present invention is described.Wherein, the left, right, front and rear in the explanation represent that the driver to ride on the vehicle is the direction of benchmark.In addition, according to Reference numeral towards accompanying drawing.
(embodiment)
Embodiments of the invention are described.Arrow among the figure (preceding) expression vehicle front.
As shown in Figure 1, the bottom vehicle body 10 of automobile has: the following longeron 11,12 of the pair of right and left that extend front and back; Be crossed on these following longerons 11,12 and upwardly extending centre cross member 13 in overall width side; Be combined in down the vehicle frame 14,16 after the upwardly extending pair of right and left in front and back on the left and right end portions of each rearward end and centre cross member 13 of longeron 11,12; Be crossed on these back vehicle frames 14,16 and upwardly extending after cross member 17 in overall width side; The case fender rod 18 that links before and after the central portion separately with centre cross member 13 and after cross member 17.
As shown in Figure 2, between centre cross member 13 and after cross member 17 and in the below of base plate (not shown), dispose Fuel Tank 21, the centre cross member 13 and the case fender rod 18 of after cross member 17 bindings are configured in the below of Fuel Tank 21.
As shown in Figure 3; With case fender rod 18 and case cramp bar 23 supporting fuel casees 21, wherein, the mode that extend with front and back at the two ends of case cramp bar 23 is installed on the base plate (not shown); And this case cramp bar 23 leaves configuration with respect to case fender rod 18 on the overall width direction.
The cross section of case fender rod is rectangular, and is as shown in Figure 7, and its leading section is compared with rearward end and is positioned at top, last below-center offset (off-set).Thus, can the case fender rod be configured along the case lower surface.
As above-mentioned; Because case fender rod 18 bends to convex downwards; Therefore; When the leading section 18b of case fender rod 18 and rearward end 18d were applied the clamp load on the length direction that acts on case fender rod 18, therefore case fender rod 18 deflection downwards can not boost Fuel Tank 21 (with reference to Fig. 2).
Fender rod is processed down convex form; And be installed on the lower surface of after cross member via carriage; Thus, to after produce when hitting after cross member is shifted onto an obstacle (back collide) thus go up after cross member from the crooked moment of body side installation portion, on fender rod, produce the resistibility of downward deformation direction; Carriage becomes moment with this resistibility at the direction up conversion of the crooked rotation of offsetting after cross member, prevents crooked (with reference to Fig. 8) of after cross member.
The installation constitution to after cross member 17 of Fig. 5 (a) expression case fender rod 18.
The rearward end 18dMIG welding (Heliarc welding) of case fender rod 18 is last at peristome 27f, the 27f of the left and right sides sidewall of the frame support bracket 27 of hat section, with the flange part 27d about this frame support bracket 27,27e bolted to the bottom surface of after cross member 17 (not shown).Hole or the slotted hole bigger than body side fastening part diameter are processed in the hole (not shown) of this flange part, so that it is bad to absorb precision.Because with the lower surface of the rearward end 18d of shape for hat frame support bracket 27 pushing fender rods 18, therefore can offset the moment of generation effectively through resistibility to the downwarping load of crossbeam, can prevent crooked.In addition, the rearward end 18d of case fender rod 18 also can be installed on the after cross member 17 through bolt via the frame support bracket 27 in cap shaped cross section.
Like this, through frame support bracket 27 is processed cap shaped, and only compare, when clamp load acts on the two ends of case fender rod 18, can suppress case fender rod 18 and be out of shape with the mode of deflection with the structure of bolt install bin fender rod 18.Therefore, for example, case fender rod 18 is difficult for seat and bends distortion, can produce on the whole drag.
The installation constitution to centre cross member 13 of Fig. 5 (b) expression case fender rod 18.
The leading section 18b of case fender rod 18 is installed on the centre cross member 13 through bolt 33.
The effect of the back structure of vehicle body of the above explanation of explanation below.
As shown in Figure 6, take place under the situation of rear collision at the rear portion of collision thing 35 from rear and vehicle body, shown in hollow arrow, impact load acts on the after cross member 17.Consequently, after cross member 17 is desired distortion forwards, but case fender rod 18 is moving and this distortion is suppressed with centre cross member 13 associations, can reduce the distortion of after cross member 17.
Therefore; Under the situation that case fender rod 18 is not set, for reducing the distortion of after cross member 17, for example; Intensity, the rigidity increase that need make after cross member 17 and be combined in the back vehicle frame 14,16 on this after cross member 17; But in this back structure of vehicle body, do not have above-mentioned necessity, and can suppress the weight increase.
As shown in Figure 4, therefore as shown in Figure 7 because case fender rod 18 bends to convex downwards, (Reference numeral 16 only is shown at the collision thing from rear and back vehicle frame 14,16.), under after cross member 17 situation about bumping, impact load acts on the case fender rod 18 via after cross member 17, case fender rod 18 that kind deflection downwards shown in the thick wave line among the figure.Therefore, case fender rod 18 can not boost Fuel Tank 21.
Shown in above-mentioned Fig. 1, Fig. 2, Fig. 4, Fig. 5 (a), back structure of vehicle body has: vehicle frame 14,16 after the pair of right and left of extending before and after the rear portion of vehicle body and cantilever being supported; Be crossed on the after cross member 17 on these back vehicle frames 14,16; In this back structure of vehicle body; Through front and back extend and bend to downwards convex bar, to be case fender rod 18 link after cross member 17 and the centre cross member 13 that is located at the place ahead of this after cross member 17, the frame support bracket 27 that the rearward end 18d of this case fender rod 18 is used as carriage encases from the below, and is fastened on the after cross member 17 through frame support bracket 27; Therefore; Through linking after cross members 17 and centre cross members 13 with case fender rod 18, owing to be created in the resistibility on the length direction of case fender rod 18 during rear collision, so can make the distortion of after cross member 17 littler.
Therefore, intensity, the rigidity of after cross member 17, back vehicle frame 14,16 can be reduced, lightweight can be sought.
In addition, bend to convex downwards, when effect has load on the length direction of case fender rod 18, case fender rod 18 is out of shape downwards, needn't worry that case fender rod 18 boosts Fuel Tank 21 through making case fender rod 18.
And; Rearward end 18d owing to the mode hitch box fender rod 18 that encases from the below with employing frame support bracket 27; Therefore, the enough frame support brackets 27 of ability are firmly fastened to the rearward end 18d of case fender rod 18 on after cross member 17, and; The deflection of case fender rod 18 can be suppressed, the distortion of case fender rod 18 can be reduced.
In addition, because case fender rod 18 is configured in the below of the Fuel Tank 21 of being located at body bottom section, therefore, can enough case fender rod 18 protection Fuel Tanks 21.In addition, can reduce the part number with the strengthening part of case fender rod 18 double as body bottom sections and the guard block of Fuel Tank 21, can cost-cutting.
In addition, in the embodiment shown in Fig. 1, Fig. 4, Fig. 5 (a), Fig. 5 (b), case fender rod 18 is processed the square-section solid construction, but be not limited to this, also can be made into hollow structure of rectangle closed section or コ shaped sections structure.
(industrial applicibility)
Back structure of vehicle body of the present invention is applicable to automobile.
Claims (8)
1. back structure of vehicle body has: the back vehicle frame of pair of right and left, support the cantilever that before and after the rear portion of vehicle body, extends; After cross member; Be crossed on the vehicle frame of said back; It is characterized in that also bend to separately the central portion binding of the bar of convex with said after cross member and the centre cross member that is located at this after cross member the place ahead downwards through the fore-and-aft direction extension, the rearward end of this bar is encased from the below with carriage; And be fastened on the said after cross member through said carriage, the leading section of said bar is compared with rearward end and is positioned at the top.
2. back structure of vehicle body as claimed in claim 1 is characterized in that said bar is configured in the below of the Fuel Tank of being located at body bottom section.
3. back structure of vehicle body as claimed in claim 1 is characterized in that, said carriage is that the flange part (27e) of cap shaped is fastened on the after cross member bottom surface in the cross section.
4. back structure of vehicle body as claimed in claim 3 is characterized in that, in the rearward end of said bar, the sidewall of bar sidewall and the carriage opening via the sidewall of said carriage is welded through Heliarc welding.
5. back structure of vehicle body as claimed in claim 2 is characterized in that, said case is combined on the vehicle body through the case cramp bar of said bar and side.
6. back structure of vehicle body as claimed in claim 5 is characterized in that, said bar is the case fender rod.
7. back structure of vehicle body as claimed in claim 3 is characterized in that, the leading section of said bar connects from the bar lower surface and is fastened on the bottom surface of centre cross member.
8. back structure of vehicle body as claimed in claim 3 is characterized in that, said carriage has the bolt inserting hole at flange part (27e), and this bolt inserting hole is bigger than the fastener hole of the bottom surface of after cross member, or is made into the slotted hole shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009129579 | 2009-05-28 | ||
| JP2009-129579 | 2009-05-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101898584A CN101898584A (en) | 2010-12-01 |
| CN101898584B true CN101898584B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101649321A Active CN101898584B (en) | 2009-05-28 | 2010-04-20 | Back structure of vehicle body |
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| CN (1) | CN101898584B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5728524B2 (en) * | 2013-04-17 | 2015-06-03 | 本田技研工業株式会社 | Body structure |
| JP6372057B2 (en) * | 2013-07-08 | 2018-08-15 | スズキ株式会社 | Trailing arm mounting structure |
| KR101664049B1 (en) * | 2014-11-21 | 2016-10-10 | 현대자동차 주식회사 | Stiff bar fastening structure and manufacturing method of stiff bar |
| CA3004454C (en) * | 2015-12-09 | 2023-01-17 | Arcelormittal | Vehicle rear body structure and method for manufacturing thereof |
| FR3054817B1 (en) * | 2016-08-02 | 2018-08-24 | Peugeot Citroen Automobiles Sa | MODULAR REINFORCING ELEMENT FOR AUTOMOTIVE VEHICLE CASE FOR PROTECTION IN THE EVENT OF REAR SHOCK OR LATERAL SHOCK |
| JP6954024B2 (en) * | 2017-11-13 | 2021-10-27 | トヨタ自動車株式会社 | Vehicle skeleton structure |
| JP7052599B2 (en) * | 2018-06-27 | 2022-04-12 | トヨタ自動車株式会社 | Vehicle rear structure |
| JP6767450B2 (en) * | 2018-09-27 | 2020-10-14 | 本田技研工業株式会社 | Body front structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000255455A (en) * | 1999-03-08 | 2000-09-19 | Mitsubishi Motors Corp | Car body structure |
| JP2006082742A (en) * | 2004-09-17 | 2006-03-30 | Suzuki Motor Corp | Rear body structure |
| JP4525276B2 (en) * | 2004-09-29 | 2010-08-18 | マツダ株式会社 | Lower body structure |
| JP2006159253A (en) * | 2004-12-07 | 2006-06-22 | Kobe Steel Ltd | Weld joint of different material of iron-based material and aluminum-based material |
| JP5001608B2 (en) * | 2006-09-04 | 2012-08-15 | 本田技研工業株式会社 | Rear body structure |
| JP5032853B2 (en) * | 2007-01-19 | 2012-09-26 | 本田技研工業株式会社 | Car body rear structure |
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| CN101898584A (en) | 2010-12-01 |
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