CN100453382C - Underbody structure of vehicle - Google Patents
Underbody structure of vehicle Download PDFInfo
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- CN100453382C CN100453382C CNB200510082413XA CN200510082413A CN100453382C CN 100453382 C CN100453382 C CN 100453382C CN B200510082413X A CNB200510082413X A CN B200510082413XA CN 200510082413 A CN200510082413 A CN 200510082413A CN 100453382 C CN100453382 C CN 100453382C
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- base plate
- crossbeam
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Abstract
An underbody structure of a vehicle includes a floor panel (2-6) of which rear portion is raised to form a rear floor, a pair of left and right rear side frames (12,12) extending generally along a longitudinal axis of the vehicle at the rear of the floor panel (2-6) with a specific distance held between the left and right rear side frames (12,12) across the vehicle, and a rear cross member (14) extending widthwise across the vehicle and interconnecting forward end portions of the left and right rear side frames (12,12). A fuel tank (13) is mounted between the left and right rear side frames (12,12), and the rear cross member (14) is located under the floor panel (2) at the front of the fuel tank (13).
Description
Technical field
The present invention relates to a kind of rear and be provided with the pair of right and left floor side member that separates appointed interval and extend along the overall width direction, between the pair of right and left floor side member, be provided with the lower structure of vehicle of Fuel Tank simultaneously to the vehicle fore-and-aft direction at base plate.
Background technology
In the past, the underbody structure of vehicle generally was a structure as shown in figure 16.
Promptly, base plate 100 is the step-like portion that arches upward 101 of upwards rising by the rear portion and is connected with back base plate 102, position between the anterior bottom of top rear face of portion 101 of arching upward and back base plate 102 is provided with the after cross member 103 that extends to the overall width direction, be provided with Fuel Tank 104 at the rear of this after cross member 103, above the base plate 102 of back, be provided with back seat 105 simultaneously.
Above-mentioned after cross member 103 when improving the vehicle body rigidity, can overcome the shock load of side direction, the effect of protection Fuel Tank 104 is arranged, if but consider that from traveling comfort and fuel tank capacity this respect its position is provided with unsatisfactoryly.
That is, the requirement of two aspects has been proposed for vehicle: the one, by the back seat 105 and the portion 101 that arches upward as far as possible rearward are provided with, guaranteeing space, rear rider underfooting, and pursue the raising of comfort level; The 2nd, the capacity of Fuel Tank 104 will be done greatly as far as possible.Therefore,, just be necessary the portion of arching upward 101 rearward is provided with, run counter to therewith,, just be necessary this Fuel Tank is extended forward, therefore be the reply above-mentioned requirements, the then essential opposite configuration that adopts if will increase fuel tank capacity for improving comfort level.Moreover the vehicle for body structure need densification must require rear portion overhang (overhang) as far as possible little again, if but after cross member 103 is positioned at the portion's of arching upward 101 top rear face as shown in figure 16, just be difficult to satisfy above-mentioned requirements.
In patent documentation 1 (Japanese Patent discloses public Reported Te Open flat 5-50952 number), disclose following structure: the top rear face in the portion of arching upward is provided with after cross member, between the pair of right and left floor side member (rear side frame) that is positioned at thereafter the side, be provided with Fuel Tank, after cross member is positioned at the place ahead of Fuel Tank thus, identical with structure shown in Figure 14, thus exist for improving comfort level and increasing the problem that the fuel tank capacity after cross member becomes obstacle.
Again, in patent documentation 2 (the open Gong Reported Actual Open of Japanese Utility Model flat 5-71083 number), disclose the structure that Fuel Tank is set in the portion of arching upward, but such structure can not there be any enlightenment to improving traveling comfort and increasing fuel tank capacity.
Again, in patent documentation 3 (Japanese Patent discloses public Reported Te Open flat 5-155258 number), disclose along the back side shape of the portion of arching upward and formed Fuel Tank, and the structure that this Fuel Tank is provided with along the back side of the portion of arching upward, but, adopt such formation can make the structure of Fuel Tank be tending towards complicated, thereby reduced realizability.
Summary of the invention
The objective of the invention is to, provide a kind of by the crossbeam that extends and the leading section of pair of right and left floor side member is coupled together along the overall width direction is set, and above-mentioned crossbeam is arranged on the floor below in Fuel Tank the place ahead, to guarantee the vehicle body rigidity simultaneously and to increase the lower structure of vehicle of fuel tank capacity.
Lower structure of vehicle of the present invention has: base plate; The pair of right and left floor side member that keeps appointed interval and extend along the overall width direction at the rear of this base plate along the vehicle fore-and-aft direction; Be arranged on the Fuel Tank between the above-mentioned pair of right and left floor side member, and extend and crossbeam and above-mentioned crossbeam that the leading section of above-mentioned a pair of floor side member couples together are set in place in the floor below in Fuel Tank the place ahead along the overall width direction, can comprise also that in addition the position of the close end of above-mentioned crossbeam is connected with the rearward end of this floor beams along the floor beams of base plate to the fore-and-aft direction extension of vehicle.
Adopt said structure, above-mentioned crossbeam couples together the leading section of pair of right and left floor side member each other along the overall width direction, therefore, can guarantee the rigidity of vehicle body, and, because above-mentioned crossbeam is set in place in the floor below in Fuel Tank the place ahead, compares with the structure in the past of the top rear face that crossbeam is arranged on the portion of arching upward, and can increase the volume of Fuel Tank.That is, can guarantee the rigidity of vehicle body and the volume of increase Fuel Tank simultaneously, again because above-mentioned crossbeam is arranged on the below of base plate, so the existence of this crossbeam can not impact the car chamber interior yet.In addition, the multiplier that produces owing to the connection structure of crossbeam and floor beams strengthens effect, can improve the rigidity of floor beams and crossbeam, the load in the time of also disperseing vehicle collision simultaneously and improve the crash worthiness energy.
In said structure, on above-mentioned base plate, the rear that the position is set of above-mentioned crossbeam forms the portion that arches upward that upwards arches upward, and at the rear of the above-mentioned portion that arches upward above-mentioned Fuel Tank is set.
Adopt said structure, Fuel Tank is set, and crossbeam is arranged on the floor below in Fuel Tank the place ahead, so can increase car chamber inner space and fuel tank capacity simultaneously by will the portion of arching upward just rearward being provided with at the rear of the portion of arching upward.
In said structure, can be in the floor below that is positioned at above-mentioned Fuel Tank sidepiece, the freeing pipe that extends along the vehicle fore-and-aft direction is set, the part of above-mentioned Fuel Tank can prolong and is arranged between above-mentioned freeing pipe and the base plate.
Adopt said structure, when guaranteeing the rationally distributed property of freeing pipe, because the part of above-mentioned Fuel Tank is extended, so the volume of this Fuel Tank can further increase.
In said structure, can be in the floor below of above-mentioned Fuel Tank sidepiece, the freeing pipe that extends along the vehicle fore-and-aft direction is set, on above-mentioned crossbeam, can form with freeing pipe the corresponding recess in position is set.
Adopt said structure, not only can guarantee the rigidity of vehicle body simultaneously and increase fuel tank capacity, and utilize above-mentioned recess to carry out layout to freeing pipe at an easy rate.
In said structure, the lower surface portion of above-mentioned Fuel Tank extends to the position of the height that is lower than the minimum lower surface of above-mentioned base plate, and above-mentioned crossbeam extends to the position of the lower surface that is lower than above-mentioned Fuel Tank simultaneously, is formed the protection department of Fuel Tank by this crossbeam.
Adopt said structure, extend to assigned address, not only can prevent to increase fuel tank capacity from of the impact of outer barrie thing to Fuel Tank by lower surface portion with Fuel Tank.
In said structure, above-mentioned crossbeam can be configured as the rectification shape, is formed the air deflector (air deflector) that the wind that travels that flows to Fuel Tank is carried out rectification by this crossbeam.
Adopt said structure, the air deflector that is made of the above-mentioned crossbeam that is configured as the rectification shape carries out rectification to the wind that travels that flows to Fuel Tank, in the time of just can reducing the number of parts and assembler, simultaneously, also can improve Fuel Tank ambient air dynamic characteristic (aerodynamic characteristic).
In said structure, above-mentioned crossbeam releasably is arranged on the below of above-mentioned base plate.
Adopt said structure,, make the operations such as maintenance inspection of freeing pipe become easily, thereby can improve the maintenance performance because crossbeam can unload from vehicle body.
In said structure, above-mentioned crossbeam can be fastened to the leading section of floor side member by bolt.
Adopt said structure and since crossbeam by bolted on floor side member as the vehicle body rigid member, so can improve the rigidity of both (crossbeam and floor side member), but simultaneously by the construct for handling of crossbeam, can improve the maintenance performance of freeing pipe again.
In said structure, above-mentioned crossbeam can be fastened on the base plate by bolt.
Adopt said structure, owing to crossbeam is fastened on the base plate by bolt, thus can improve the rigidity of both (crossbeam and base plate), but simultaneously by the construct for handling of crossbeam, can guarantee the maintenance performance of freeing pipe again.
In said structure, above-mentioned crossbeam by bolted in the tunnel of base plate portion.
Adopt said structure, because crossbeam is fastened to tunnel portion by bolt, thus can improve the rigidity of both (crossbeam and tunnel portion), but simultaneously by the construct for handling of crossbeam, can guarantee the maintenance performance of freeing pipe again.
In said structure, above-mentioned crossbeam can be fastened to along base plate on the floor beams that the vehicle fore-and-aft direction extends by bolt.
Adopt said structure, because crossbeam is fastened on the floor beams as the vehicle body rigid member by bolt, thus can improve the rigidity of both (crossbeam and floor beams), but simultaneously by the construct for handling of crossbeam, can guarantee the maintenance performance of freeing pipe again.
Description of drawings
Fig. 1 represents the lateral plan of lower structure of vehicle of the present invention.
Fig. 2 is the birds-eye view of lower structure of vehicle shown in Figure 1.
Fig. 3 is the A-A line cutaway view of Fig. 2.
Fig. 4 is the main position enlarged side view of Fig. 3.
Fig. 5 represents the upward view of underbody structure.
Fig. 6 is the birds-eye view of after cross member.
Fig. 7 is the block diagram of after cross member.
Fig. 8 is the B-B line cutaway view of Fig. 7.
Fig. 9 is the cutaway view that is equivalent to the C-C line position of Fig. 6.
Figure 10 is the cutaway view that is equivalent to the D-D line position of Fig. 6.
Figure 11 is the cutaway view that is equivalent to the E-E line position of Fig. 6.
Figure 12 is the enlarged side view of after cross member.
Figure 13 is the block diagram of Fuel Tank and freeing pipe.
Figure 14 is the front elevation of Fuel Tank.
Figure 15 represents the lateral plan of other embodiment of underbody structure.
Figure 16 represents the lateral plan of lower structure of vehicle in the past.
The specific embodiment
By the crossbeam that extends and the leading section of pair of right and left floor side member is coupled together along the overall width direction is set, and this crossbeam is set in place in the floor below in Fuel Tank the place ahead, thus the purpose that can realize guaranteeing the rigidity of vehicle body simultaneously and increase fuel tank capacity.
Embodiment
Followingly described in detail with regard to one embodiment of the present of invention according to above-mentioned accompanying drawing.
Fig. 1 is the lateral plan of lower structure of vehicle, and Fig. 2 is the birds-eye view of lower structure of vehicle, and Fig. 3 is the A A line cutaway view of Fig. 2, and Fig. 4 is that view is surveyed in the amplification at the main position of Fig. 3, and Fig. 5 is the upward view of lower structure of vehicle.As Fig. 1～shown in Figure 5, in above-mentioned lower structure of vehicle, be provided with the dividing plate 1 (instrument carrier panel) that engine chamber and car chamber are separated on fore-and-aft direction, while is in the rear end, bottom of this dividing plate 1, roughly being horizontally extending base plate 2 towards the rear is attached thereto, at the central part of this base plate 2, form outstanding and tunnel portion 3 that extend to the front and back of vehicle to car chamber interior (top).
Again, be fastened on the left and right sides portion of above-mentioned base plate 2 as the curb girder (side sill) 4,4 along the extension of vehicle fore-and-aft direction of vehicle rigid member, this curb girder 4, by curb girder inner panel, curb girder outside plate and curb girder reinforcement are combined, constitute the curb girder that is the closed cross-section shape that extends along the vehicle fore-and-aft direction.
Above-mentioned base plate 2, its rear portion forms the step-like portion that arches upward 5 that arches upward that upwards is.This upper end of arching upward portion 5 is connected with the back base plate 6 (part of base plate 2) that rearward extends from this upper end, and the rear portion of base plate 6 roughly on the midway location after this simultaneously forms and is step-like recessed spare tyre groove 7 downwards.
The top of base plate 2, as Fig. 1～shown in Figure 3, setting strides across tunnel portion 3 and extends to the right and left curb girder 4 along the overall width direction, 4 crossbeam 8 (being so-called No.2 crossbeam) as the vehicle body rigid member, simultaneously, crossbeam 8 is on rear view of vehicle position spaced apart therewith, be provided with and 3 square crossings of tunnel portion with the pair of right and left crossbeam 9 that couples together along the overall width direction between this tunnel 3 and the curb girder 4,9, owing to be provided with this crossbeam 9,9 (being the so-called vehicle body rigid member that is made of the No.2.5 crossbeam) are at above-mentioned base plate 2 and each crossbeam 8, form the closed cross sectional structure that extends along the overall width direction between 9.
On the other hand, in the bottom of base plate 2, the middle part between the tunnel portion 3 of the curb girder 4 of sidepiece and central part as shown in Figure 5, is provided with the pair of right and left floor beams 10 as the vehicle body rigid member of extending along the vehicle fore-and-aft direction.Because these floor beams 10 combined lower surfaces that are fixed on base plate 2 form the closed cross sectional structure that extends along the vehicle fore-and-aft direction between base plate 2 and the floor beams 10.The rear end of this floor beams 10 extend to the portion of arching upward 5 near.Be provided as all side beam 11 of vehicle body rigid member continuously at the leading section of this floor beams 10 again.
On the base plate 6 of above-mentioned back, be provided with the pair of right and left floor side member 12,12 that on the overall width direction, keeps certain distance and extend as vehicle body rigid member (floor side member) to the vehicle fore-and-aft direction again.This floor side member 12 is because the combined lower surface that is fixed on back base plate 6, so, between these back base plates 6 and floor side member 12, formed the closed cross sectional structure that extends to the vehicle fore-and-aft direction.
As shown in Figure 4, Fuel Tank 13 is set at the rear side below of the portion of arching upward 5 and the lower front of back base plate 6, simultaneously, and also between pair of right and left floor side member 12,12.
Again, as shown in Figure 5 and Figure 6, the leading section 12a of the rearward end 10a of the above-mentioned floor beams 10 of extending to the vehicle fore-and-aft direction along the lower surface of base plate 2 and the above-mentioned floor side member 12 that extends to the vehicle fore-and-aft direction along the lower surface of back base plate 6, in overlooking direction, be set to mutually on the overall width direction position and stagger, simultaneously both parts state in an overlapping on the fore-and-aft direction of vehicle.
Between the leading section 12a of curb girder after the above-mentioned pair of right and left 12,12, be provided with the after cross member 14 that both are coupled together as the vehicle body rigid member with the form of extending along the overall width direction.Above-mentioned after cross member 14 as depicted in figs. 1 and 2, is set at the below of the base plate 2 in the place ahead that is positioned at above-mentioned Fuel Tank 13.That is, above-mentioned after cross member 14, as shown in Figure 1, be set at the position, front of the portion that arches upward 5 between the base plate 6 at base plate 2 and back base plate 2 below.
Fig. 7 is the block diagram of after cross member 14, and Fig. 8 is the B-B line cutaway view along Fig. 7, and above-mentioned after cross member 14 as Fig. 6～shown in Figure 8, for improving this crossbeam 14 self rigidity, forms continuous concaveconvex structure along the overall width direction.Again, on above-mentioned crossbeam 14, before and after being provided with respect to base plate 2 lower surfaces of the sidepiece that is positioned at tunnel portion 3 in pairs and the double-type mount pad 14a in the left and right sides, 14b, 14c, 14d, be provided with respect to the lower surface of the rearward end 10a of floor beams 10 before and after in pairs and the double-type mount pad 14e in the left and right sides, 14e, 14e, 14e,, before and after being provided with respect to the lower surface of the leading section 12a of floor side member 12 in pairs and the double-type mount pad 14f in the left and right sides, 14f, 14f, 14f, on these mount pads 14a～14f, form mounting hole 15,16,17 respectively simultaneously.
As shown in Figure 7 and Figure 8, above-mentioned after cross member 14, between above-mentioned pair of right and left mount pad 14a, 14b and the position between mount pad 14c, the 14d at the sidepiece of tunnel portion 3, formation is provided with freeing pipe 19 with respect to the top board of after cross member 14 recess 18 towards the below depression above this recess 18.
That is, form above-mentioned recess 18 on the corresponding position, position being provided with of freeing pipe 19 with after cross member 14.Again, above-mentioned mount pad 14e with respect to the lower surface of the rearward end 10a of floor beams 10, green phase is provided with the recess depression towards the below for the top board of after cross member 14 and is formed at lower position, simultaneously about mount pad 14e, 14e between the base plate of after cross member 14 be the general planar shape of no concave-convex structure.
Again, the mount pad 14f of lower surface with respect to the leading section 12a of back curb girder 12 is formed on the position that slightly rearward retreats with respect to after cross member 14 main parts.Fig. 9 is the cutaway view that is equivalent to the C-C line position of Fig. 6.As shown in Figure 9, upper surface at the base plate 2 of the sidepiece that is positioned at tunnel portion 3, with be welded with a plurality of nuts 20 in advance on the mounting hole 15 corresponding positions of above-mentioned after cross member 14, the installation component that will be made of bolt 21 is connected and fixed from the below with respect to this nut 20, and above-mentioned thus mount pad 14a, 14b, 14c, 14d releasably are installed on the base plate 2.
Figure 10 is the cutaway view at position that is equivalent to the D-D line of Fig. 6.As shown in figure 10, rearward end 10a in floor beams 10, with be welded with a plurality of nuts 22 in advance on the mounting hole 16 corresponding positions of above-mentioned after cross member 14, the installation component that will be made of bolt 23 is connected and fixed from the below with respect to this nut 22, and above-mentioned thus mount pad 14e releasably is installed on the rearward end 10a of floor beams 10.
Figure 11 is the cutaway view at position that is equivalent to the E-E line of Fig. 6.As shown in figure 11, leading section 12a at back curb girder 12, with be welded with a plurality of nuts 24 in advance on the mounting hole 17 corresponding positions of above-mentioned after cross member 14, the installation component that will be made of bolt 25 is connected and fixed from the below with respect to this nut 24, and above-mentioned thus mount pad 14f releasably is installed on the leading section 12a of back curb girder 12.
Like this, and for example shown in Figure 12, consider the maintainability of vehicle etc., utilize a plurality of bolts 21,23,25 (present embodiment amount to 12 bolts), releasably be installed in after cross member 14 on the base plate 2 that is positioned at tunnel portion 3 sidepieces, the rearward end 10a of floor beams 10 goes up and the leading section 12a of back curb girder 12 on.
And; as Fig. 4 and shown in Figure 9; above-mentioned after cross member 14; its front portion is configured as has the rectification shape that rearward is the rectification part 14g of the low shape in preceding high back that extends oblique below from the lower surface of base plate 2; thereby by this after cross member 14; constituted the air deflector that the wind x that travels that flows to Fuel Tank 13 is carried out rectification, but simultaneously this after cross member 14 also double as for the protection Fuel Tank 13 the Fuel Tank protection department.
As Fig. 5 and shown in Figure 13, below the back base plate 6 of the sidepiece that is positioned at above-mentioned Fuel Tank 13, be provided with the freeing pipe 19 that extends along the vehicle front and back, between this freeing pipe 19 and back base plate 6, the part of Fuel Tank 13 is extended setting.That is, be imported into the top of the freeing pipe 19 that roughly is the setting of L oxbow and the extension 13a between base plate 6 bottoms, back and Fuel Tank 13, realized the volume increase of Fuel Tank 13 thus for being wholely set.
Here, the downstream of above-mentioned freeing pipe 19 is connected with trail pipe 27 (tail pipe) by silencer 26 (silenccr), on the other hand, the upstream side of freeing pipe 19 is connected with the dontake pipe (exhaust manifold) (not shown) of driving engine by the catalytic exhaust-gas converter 28,29 (catalytic converter) outside the car that is positioned at tunnel portion 3.
As shown in Figure 4, form recess 13b on the top of Fuel Tank 13, corresponding with it, back base plate 6 also forms recess 6b, in addition as shown in figure 14, also these each recess 13b, 6b can be saved, and can correspondingly enlarge the volume of Fuel Tank.
As shown in Figure 5,, be provided with bottom tunnel component 30 at the position (opening portion, lower end) of tunnel portion 3 corresponding to crossbeam 8 (being the No.2 crossbeam) again.And, near arch upward portion 5 back base plate 6 above, as shown in figure 15, be provided with back seat 31.In addition, in Fig. 6 and Fig. 7, arrow F represents vehicle front, and arrow R represents rear view of vehicle.
Thus, owing to have base plate (comprising base plate 2 and back base plate 6), and the pair of right and left floor side member (floor side member 12) that keeps distance to a declared goal and extend along the overall width direction at this base plate rear along the vehicle fore-and-aft direction, between above-mentioned pair of right and left floor side member, be provided with in the lower structure of vehicle of Fuel Tank 13, be provided with the crossbeam (after cross member 14) that extends and the leading section of above-mentioned a pair of floor side member is coupled together along the overall width direction, and this crossbeam is set in place in the below of the base plate 2 in above-mentioned Fuel Tank 13 the place aheads, therefore can guarantees the rigidity of vehicle body by above-mentioned crossbeam.
Again, the crossbeam that constitutes by above-mentioned after cross member 14, owing to be set at the below of the base plate 2 in Fuel Tank 13 the place aheads, therefore, the structure (with reference to Figure 16) that is positioned at the top rear face of the portion of arching upward with after cross member is in the past compared, owing to increased the volume of Fuel Tank 13, can guarantee the rigidity of vehicle body and the volume of increase Fuel Tank 13 simultaneously.And above-mentioned crossbeam (after cross member 14) is owing to the below that is set at base plate 2, so the existence of this after cross member 14 can not impact the car chamber interior.
In the above-mentioned embodiment, the base plate 2 that is positioned at after cross member 14 rears forms the step-like portion that arches upward 5 that arches upward that upwards is, at above-mentioned rear of arching upward portion 5 above-mentioned Fuel Tank 13 is set, simultaneously below the base plate 2 that is positioned at Fuel Tank 13 the place aheads, after cross member 14 is set, thereby can realizes the increase that retreats the car chamber inner space that setting brings of the above-mentioned portion 5 that arches upward and the increase of Fuel Tank 13 capacity simultaneously.
And, as mentioned above, below at the base plate that is positioned at Fuel Tank 13 sidepieces (with reference to back base plate 6), be provided with the freeing pipe 19 that extends to the vehicle fore-and-aft direction, between this freeing pipe 19 and base plate (back base plate 6), be provided with extension 13a with the part prolongation of above-mentioned Fuel Tank 13, adopt such structure, the rationally distributed property of above-mentioned freeing pipe 19 can be guaranteed, the volume of Fuel Tank 13 can be further increased again by the setting of above-mentioned extension 13a.
And, above-mentioned embodiment as shown in Figures 7 and 8, on after cross member 14, form with freeing pipe 19 the corresponding recess 18 in position is set, adopt such structure, not only can guarantee the rigidity of vehicle body simultaneously and increase Fuel Tank 13 volumes, and utilize above-mentioned recess 18 to carry out layout to freeing pipe at an easy rate.
Again, in the above-mentioned embodiment, the position of the close end of after cross member 14 is connected with the rearward end 10a of the floor beams 10 of extending to the vehicle fore-and-aft direction along base plate 2, therefore, the multiplier that connection structure produced by above-mentioned after cross member 14 and floor beams 10 strengthens effect, the rigidity of floor beams 10 and after cross member 14 is improved, load in the time of also disperseing vehicle collision simultaneously and raising crash worthiness energy.
Again; in the above-described embodiment; the lower surface portion of Fuel Tank 13 extends to the position of the height of the minimum lower surface that is lower than above-mentioned base plate 2; above-mentioned after cross member 14 extends to the position of the lower surface that is lower than above-mentioned Fuel Tank 13 simultaneously; form the protection department 14tg of Fuel Tank with this; therefore, can realize the increase of Fuel Tank 13 volumes and effectively simultaneously to the protection of Fuel Tank 13.
Promptly, Fuel Tank 13 is arranged on the portion of arching upward 5, at this moment, if the lower surface portion of Fuel Tank 13 is dropped to the position of the height of the minimum lower surface that is lower than base plate 2, just can increase tankage, but,, just can not prevent that Fuel Tank 13 is subjected to the bump from the outer barrie thing if just reduce the lower surface portion of case.Thereby, in the above-mentioned embodiment, in the place ahead of Fuel Tank 13; be provided with the after cross member 14 of the position that extends to the lower surface that is lower than this Fuel Tank 13; thereby constitute the protection department of Fuel Tank,, also can increase the volume of this Fuel Tank 13 simultaneously so not only realized protection to Fuel Tank 13.
Especially in the above-described embodiment, shown in Fig. 4 waits, above-mentioned crossbeam 14 is configured as the rectification shape, form the air deflector that the wind that travels that flows to Fuel Tank is carried out rectification by this crossbeam 14, therefore, can realize the volume increase and the raising Fuel Tank 13 ambient air dynamic characteristics of Fuel Tank 13 simultaneously.Promptly, the words of Fuel Tank 13 are set in the above-mentioned portion 5 that arches upward, make complex-shapedization owing to forming the gap, the wind that travels enters this part after wind to turmoil, thereby produce eddy current and bring negative effect for air resistance (air resistance), but if the air deflector (with reference to after cross member 14) that the wind X that travels that blows to this Fuel Tank 13 is carried out rectification is set on the base plate 2 that is positioned at above-mentioned Fuel Tank 13 the place aheads, thereby the generation that then can prevent above-mentioned eddy current can improve Fuel Tank 13 ambient air dynamic characteristics.
In the above-described embodiment,, therefore has the advantage easy to maintenance of guaranteeing freeing pipe 19 because above-mentioned crossbeam 14 adopts the structure that releasably is arranged on base plate 2 belows again.That is, because above-mentioned after cross member 14 can unload from vehicle body, feasible operations such as Maintenance and Repair to the extra high freeing pipe 19 of maintenance requirement become easily, thereby can improve maintenance property.
Again, shown in an embodiment of the invention, after cross member 14 can be by bolted on the leading section 12a of above-mentioned floor side member 12, in such structure, on the floor side member with closed cross sectional structure 12 that after cross member 14 is fastened on as the vehicle rigid member, thereby can improve the rigidity of both (after cross member 14 and back curb girder 12), therefore, the support rigidity (anchoring strength) of after cross member 14 not only can be guaranteed, but and the maintenance performance of freeing pipe 19 can be guaranteed again by the construct for handling of after cross member 14.
Further, shown in above-mentioned embodiment, when after cross member 14 is fastened on the base plate 2 by bolt, can improve the rigidity of after cross member 14 and base plate 2, and can effectively improve the support rigidity of after cross member 14, but, can guarantee the maintenance performance of above-mentioned freeing pipe 19 again simultaneously by the construct for handling of after cross member 14.
Moreover, shown in above-mentioned embodiment, when being fastened on after cross member 14 in the higher tunnel portion 3 of intensity in the base plate 2 by bolt, because after cross member 14 is fastened in the tunnel portion 3 by bolt, so the rigidity of both (after cross member 14 and tunnel portion 3) can be improved, and the support rigidity (anchoring strength) of after cross member 14 can be further improved, and, but, can guarantee the maintenance performance of freeing pipe 19 again by the construct for handling of after cross member 14.
Again, shown in above-mentioned embodiment, above-mentioned after cross member 14 is fastened to by extending and have on the vehicle body rigid member that the floor beams 10 of closed cross sectional structure constituted to the vehicle fore-and-aft direction along base plate 2 by bolt, make the rigidity of above-mentioned after cross member 14 and floor beams 10 be improved thus, and, the supporting rigidity of after cross member 14 is further enhanced, but, can guarantees the maintenance performance of freeing pipe 19 again simultaneously by the construct for handling of after cross member 14.
In the corresponding relation of structure of the present invention and the foregoing description, base plate of the present invention is corresponding with base plate 2, the back base plate 6 of embodiment, floor side member is corresponding with back curb girder 12, and crossbeam is corresponding with after cross member 14, but the present invention is not limited in the structure of the foregoing description.
Claims (11)
1. a lower structure of vehicle has: base plate; The pair of right and left floor side member that keeps appointed interval and extend along the overall width direction at this base plate rear along the vehicle fore-and-aft direction; Be arranged on the Fuel Tank between the above-mentioned pair of right and left floor side member; And the crossbeam that extends, the leading section of above-mentioned a pair of floor side member is coupled together along the overall width direction,
Described crossbeam is set at the floor below that is positioned at described Fuel Tank the place ahead, it is characterized in that:
Also comprise along the floor beams of base plate to the fore-and-aft direction extension of vehicle,
The position of the close end of described crossbeam is connected with the rearward end of described floor beams.
2. lower structure of vehicle as claimed in claim 1 is characterized in that,
On described base plate, the rear that the position is set in described crossbeam forms the portion that arches upward that upwards arches upward,
At the rear of the described portion that arches upward described Fuel Tank is set.
3. lower structure of vehicle as claimed in claim 1 is characterized in that,
In the floor below that is positioned at described Fuel Tank sidepiece, be provided with the freeing pipe that extends along the vehicle fore-and-aft direction,
The part of described Fuel Tank is extended and set between described freeing pipe and the base plate.
4. lower structure of vehicle as claimed in claim 1 is characterized in that,
In the floor below of described Fuel Tank sidepiece, the freeing pipe that extends along the vehicle fore-and-aft direction is set,
On described crossbeam, form with freeing pipe the corresponding recess in position is set.
5. lower structure of vehicle as claimed in claim 1 is characterized in that,
The lower surface portion of described Fuel Tank extends to the position of the height of the minimum lower surface that is lower than described base plate,
Described crossbeam extends to the position of the lower surface that is lower than described Fuel Tank simultaneously, forms the Fuel Tank protection department by this crossbeam.
6. lower structure of vehicle as claimed in claim 1 is characterized in that,
Described crossbeam is configured as the rectification shape, is formed the air deflector that the wind that travels that flows to Fuel Tank is carried out rectification by this crossbeam.
7. lower structure of vehicle as claimed in claim 1 is characterized in that,
Described crossbeam is arranged on the below of above-mentioned base plate removably.
8. lower structure of vehicle as claimed in claim 7 is characterized in that,
Described crossbeam is fastened to the leading section of described floor side member by bolt.
9. lower structure of vehicle as claimed in claim 7 is characterized in that,
Described crossbeam is fastened on the base plate by bolt.
10. lower structure of vehicle as claimed in claim 7 is characterized in that,
Described crossbeam is fastened in the tunnel portion of base plate by bolt.
11. lower structure of vehicle as claimed in claim 7 is characterized in that,
Described crossbeam is fastened to along base plate on the floor beams that the vehicle fore-and-aft direction extends by bolt.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004192476A JP4581509B2 (en) | 2004-06-30 | 2004-06-30 | Lower body structure of the vehicle |
| JP2004192477 | 2004-06-30 | ||
| JP2004192476 | 2004-06-30 | ||
| JP2004201295 | 2004-07-08 | ||
| JP2004201296 | 2004-07-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715117A CN1715117A (en) | 2006-01-04 |
| CN100453382C true CN100453382C (en) | 2009-01-21 |
Family
ID=35790407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510082413XA Expired - Fee Related CN100453382C (en) | 2004-06-30 | 2005-06-28 | Underbody structure of vehicle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4581509B2 (en) |
| CN (1) | CN100453382C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4395147B2 (en) * | 2006-06-07 | 2010-01-06 | トヨタ自動車株式会社 | Exhaust system |
| EP2628665B1 (en) * | 2010-10-13 | 2015-11-25 | Honda Motor Co., Ltd. | Vehicle body floor structure |
| JP2014530787A (en) * | 2011-10-21 | 2014-11-20 | フィスカー オートモーティブ インコーポレイテッド | Rear wheel drive type modular subframe assembly for plug-in hybrid electric vehicle and method for assembling the same |
| JP6195156B2 (en) * | 2013-08-29 | 2017-09-13 | 三菱自動車工業株式会社 | Undercarriage of the vehicle |
| CN104670002B (en) * | 2015-01-26 | 2018-07-27 | 上汽通用五菱汽车股份有限公司 | A kind of exhaust pipe fixation structure |
| US10040494B2 (en) * | 2017-01-05 | 2018-08-07 | GM Global Technology Operations LLC | Aerodynamic floor pan for a vehicle |
| JP7185183B2 (en) * | 2018-10-29 | 2022-12-07 | 三菱自動車工業株式会社 | tank protection unit |
| JP7192009B2 (en) | 2021-03-15 | 2022-12-19 | 本田技研工業株式会社 | rear body structure |
| CN113911056B (en) * | 2021-10-12 | 2023-06-09 | 东风越野车有限公司 | Whole car lower protection device of air drop vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4723810A (en) * | 1984-06-18 | 1988-02-09 | Mazda Motor Corporation | Underbody structure for vehicle |
| US5364128A (en) * | 1991-06-29 | 1994-11-15 | Mazda Motor Corporation | Rear portion structure of vehicle |
| US5409264A (en) * | 1992-01-18 | 1995-04-25 | Mazda Motor Corporation | Deformable under body including deformable frame members for protecting a fuel vapor canister |
| US20030047932A1 (en) * | 2001-08-28 | 2003-03-13 | Honda Giken Kogyo Kabushiki Kaisha | Vehicle body rear part structure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5848931Y2 (en) * | 1981-04-30 | 1983-11-08 | 富士重工業株式会社 | Automobile underfloor structure |
| JPS59121285U (en) * | 1983-02-07 | 1984-08-15 | 三菱自動車工業株式会社 | car body structure |
| JPH0452103Y2 (en) * | 1986-11-20 | 1992-12-08 | ||
| JP2758628B2 (en) * | 1989-02-08 | 1998-05-28 | 本田技研工業株式会社 | Midship vehicle |
| JP2506141Y2 (en) * | 1990-03-23 | 1996-08-07 | マツダ株式会社 | Vehicle tank mounting structure |
| JPH1111360A (en) * | 1997-06-26 | 1999-01-19 | Isuzu Motors Ltd | Vehicle under-floor parts cooling device |
| JP3528644B2 (en) * | 1998-12-10 | 2004-05-17 | 日産自動車株式会社 | Car body structure |
-
2004
- 2004-06-30 JP JP2004192476A patent/JP4581509B2/en not_active Expired - Fee Related
-
2005
- 2005-06-28 CN CNB200510082413XA patent/CN100453382C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4723810A (en) * | 1984-06-18 | 1988-02-09 | Mazda Motor Corporation | Underbody structure for vehicle |
| US5364128A (en) * | 1991-06-29 | 1994-11-15 | Mazda Motor Corporation | Rear portion structure of vehicle |
| US5409264A (en) * | 1992-01-18 | 1995-04-25 | Mazda Motor Corporation | Deformable under body including deformable frame members for protecting a fuel vapor canister |
| US20030047932A1 (en) * | 2001-08-28 | 2003-03-13 | Honda Giken Kogyo Kabushiki Kaisha | Vehicle body rear part structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4581509B2 (en) | 2010-11-17 |
| CN1715117A (en) | 2006-01-04 |
| JP2006015769A (en) | 2006-01-19 |
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