JP7226540B2 - car body structure - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a vehicle body structure for a vehicle equipped with a storage tank.

As a method for purifying nitrogen oxides (NOx) in lean exhaust gas emitted from a diesel engine, which is an internal combustion engine, urea water is hydrolyzed on a catalyst to generate ammonia (NH ₃ ), and the ammonia (NH ₃ ) is known to mount an exhaust purification device in which a selective reduction catalyst for selectively reducing and purifying NOx is provided in an exhaust passage. For example, Patent Literature 1 discloses a vehicle equipped with an aqueous urea tank for storing aqueous urea.

On the other hand, Patent Literature 2 discloses an oil filler for a cab-over type truck, in which the oil filler connected to the oil pan of the engine is inserted through a through hole formed in the frame on the side of the engine with a gap provided. It is shown.

JP 2017-94885 A Japanese Patent No. 4236234

Patent Document 1 discloses a configuration in which a urea water inlet is provided on the floor of a cargo bed in a vehicle equipped with a urea water tank, and may be provided on a side gate, a rear gate, or on the side of the vehicle. is shown. It also shows that the urea water inlet and the urea water tank are connected by a water injection pipe.

However, Patent Literature 1 does not disclose a configuration in which a water injection pipe for liquid to be injected into the tank is provided through the cross member. Further, Patent Document 2 merely discloses a structure in which engine oil is supplied to the oil pan through a through hole formed in the side frame of the engine, that is, the side frame. It penetrates and is not configured to penetrate the cross member.

In addition, it is necessary to improve the protection performance of the liquid supply pipe installed in the lower part of the vehicle body against the impact received during driving and the splashing of stones from below the vehicle. It is also necessary to ensure a stable supply of

Therefore, in view of the above-mentioned problems, at least one embodiment of the present invention provides protection against impacts received during running of a liquid supply pipe that supplies liquid from the outside of the vehicle to the storage tank, stone splashes from below the vehicle, and the like. It is an object of the present invention to provide an improved vehicle body structure.

(1) The present invention was invented to achieve the above-described object, and at least one embodiment of the present invention provides a side member that extends in the vehicle width direction and is fixed to side members that extend in the front-rear direction on the left and right sides of the vehicle. a cross member; a storage tank disposed between left and right side members for storing liquid; a vehicle lower structure mounted below the cross member and supported by the cross member; a supply pipe for supplying liquid from the outside, wherein the supply pipe penetrates the cross member above the lower structure of the vehicle and is connected to the storage tank.

According to such a configuration, the supply pipe is provided so as to pass through the cross member in the longitudinal direction of the vehicle, so that the cross member protects the supply pipe from splashing stones from below the vehicle and contact with obstacles on the road surface. be.

In addition, the vehicle lower structure supported by the cross member is attached below the cross member, and the supply pipe passes through the cross member above the vehicle lower structure, so that the cross-member cross-sectional structure opens downward. Even so, the undercarriage of the vehicle protects the feed pipe against stone splashes from below the vehicle, contact with obstacles on the road surface, and the like.

In addition, since the supply pipe passes through the cross member, it is possible to secure a space for the vehicle compartment and the cargo bed located above the cross member, as compared with a structure in which the supply pipe is installed on the upper surface of the cross member.

(2) In some embodiments, the supply pipe has one end connected to a supply port for supplying liquid from outside the vehicle and the other end connected to an inflow port of the storage tank, and the supply port is connected to the supply pipe. It is characterized in that it is positioned above a through portion penetrating through the cross member, and the through portion is positioned above the inflow port.

According to such a configuration, the supply port is positioned above the penetrating portion of the cross member, and this penetrating portion is positioned above the inflow port, so that the liquid injected from the outside of the vehicle flows into the storage tank. Cheap.

(3) In some embodiments, the portion where the supply pipe penetrates the cross member is inclined downward toward the inlet.

According to such a configuration, since the portion where the supply pipe penetrates the cross member is inclined downward, the inclined state of the supply pipe is maintained, and the liquid can easily flow into the storage tank.

(4) In some embodiments, a supply tube holding bracket is attached to the cross member to support the supply tube passing through the cross member in front of and behind the cross member.

According to this configuration, the supply pipe passing through the cross member is positioned in front of and behind the cross member by the supply pipe holding bracket, so that the supply pipe passing through the cross member and the through hole of the cross member are in a non-contact state. , or the contact state is stably maintained. In addition, the inclined state of the penetrating portion is stably maintained.

Therefore, since the supply pipe passes through the cross member and is supported by the cross member, the vertical impact caused by the thrust of the vehicle, i.e., the vertical impact acting on the frame of the vehicle body via the rear wheels, causes the supply pipe to move. The pipe is prevented from bumping into contact with the cross member or with other parts of the undercarriage other than the cross member, protecting the supply pipe from damage.

(5) In some embodiments, the storage tank arranged on the vehicle rear side of the cross member is fixed to the left and right side members and arranged so as to extend in the vehicle width direction. and

According to such a configuration, the storage tank disposed on the vehicle rear side of the cross member is also fixed to the left and right side members and extends in the vehicle width direction like the cross member. Since the tank and the tank are displaced in almost the same phase when the vehicle is running, it is possible to prevent the supply pipe from being bent due to a large displacement difference between the cross member penetrating portion of the supply pipe and the inlet of the storage tank. . This can improve the durability of the supply pipe.

(6) In some embodiments, the lower structure of the vehicle is a spare tire, and with the spare tire attached to the lower portion of the cross member, the supply pipe passing through the cross member is the spare tire. The upper portion of the tire is inclined downward toward the storage tank.

According to such a configuration, even when the spare tire is attached, the inclined state of the supply pipe is maintained, so the liquid can easily flow into the storage tank. In addition, when the lower part of the vehicle comes into contact with an obstacle on the road surface, the impact is transmitted to the cross member via a spare tire made of rubber material. The load and damage to the cross member are reduced, and damage to the supply pipe can be prevented or reduced, compared to when a rigid body is attached.

According to at least one embodiment of the present invention, it is possible to improve the protection performance against impact received during running of the supply pipe that supplies the liquid from the outside of the vehicle to the storage tank, stone splashing from below the vehicle, and the like.

1 is a schematic top plan view showing a vehicle body structure according to an embodiment of the present invention, with a cargo bed and a vehicle interior floor removed; FIG. 2 is a schematic cross-sectional view taken along line AA of FIG. 1; FIG. FIG. 3 is a schematic cross-sectional view showing another embodiment of the penetrating portion of the urea water supply pipe of FIG. 1; FIG. 2 is a schematic perspective view of the vehicle body structure of FIG. 1 , looking backward from above the front of the vehicle; FIG. 2 is a schematic perspective view of a urea water supply pipe and a supply pipe holding bracket in the vehicle body structure of FIG. 1;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings. However, the relative arrangement of components described as the embodiment or shown in the drawings is not intended to limit the scope of the present invention, but is merely an example of explanation.

FIG. 1 shows one embodiment of the present invention. The vehicle 1 is, for example, a pickup truck type SUV (Sport Utility Vehicle) equipped with a urea SCR system. The vehicle body structure of the vehicle 1 employs a separate frame structure in which the frame 3 and the body are separated. A box-shaped cab (vehicle) in which passengers board is arranged on the front side of the vehicle 1 on the frame 3, and a cargo bed is placed on the rear side thereof.

The vehicle 1 is not limited to a pick-up truck type SUV, and the rear side of the vehicle 1 on the frame may be a compartment in which passengers board in the same manner as the front side. On the rear side of the vehicle, the vehicle interior floor is mounted instead of the cargo bed.

As shown in FIG. 1, the vehicle 1 is equipped with a urea water tank (storage tank) 5 that constitutes a urea SCR system. This urea SCR system is an exhaust gas purification system for purifying nitrogen oxides (NOx) contained in the exhaust gas of the engine. It is a system in which NOx is reduced to nitrogen on the catalyst and discharged by using ammonia, which is injected and produced by hydrolysis of urea water, as a reducing agent. It is adapted to diesel engines and lean-burn engines where NOx emissions are a problem, and the vehicle 1 of this embodiment is equipped with a diesel engine.

FIG. 1 is a schematic diagram of a top plan view from above the vehicle with the cargo bed or the passenger compartment floor removed. FIG. 1 shows the vehicle body structure on the rear side of the vehicle 1, and the front side is omitted. The vehicle 1 is provided with a pair of side members 7 and 8 that form a frame 3 of the vehicle body and are spaced apart in the width direction of the vehicle and extend in the front-rear direction of the vehicle. A plurality of cross members (a front cross member 9 and a spare tire cross member 11) forming the frame 3 of the vehicle body are fixed at both ends to a pair of left and right side members 7 and 8 and extend in the vehicle width direction. be provided.

The side members 7 and 8, the front cross member 9, and the spare tire cross member (cross member) 11 are arranged substantially horizontally. Also, the cab and cargo bed of the vehicle 1 are mounted on these frames 3 via damping mount members.

As shown in FIG. 1 , a urea water tank 5 , a spare tire 13 and a guard bar 15 are mainly provided on the underside of the cargo bed of the vehicle 1 .

A spare tire (vehicle lower structure) 13 is detachably attached to the lower surface of the spare tire cross member 11 by a spare tire carrier 21 provided on the spare tire cross member 11 arranged behind the axle 19 of the rear wheel 17. Fixed. The spare tire carrier 21 raises and lowers the spare tire 13 by winding up and unwinding the chain. A sprocket around which a chain is wound is manually rotated to lift up the spare tire 13, and to lower it lowers it to the ground.

1, the spare tire 13 is positioned behind the axle 19 of the rear wheel 17 and the differential gear 23 and in front of the aqueous urea tank 5. As shown in FIG. A front cross member 9 is arranged in front of the axle 19 of the rear wheel 17, and a propeller shaft 25 connected to a differential device 23 is arranged in front of the front cross member 9. A muffler 29 provided on the exhaust pipe 27 is arranged in the . Further, on the left side of the propeller shaft 25, a fuel tank 31 for storing fuel for the diesel engine that is the drive source of the vehicle 1 is arranged.

The guard bar 15 is a member that extends substantially horizontally behind the spare tire 13 in the left-right direction. As shown in FIG. 1, it is positioned rearward of the rear ends of the left and right side members 7, 8 in plan view from above, and further positioned at the rear end portion of the urea water tank 5, and attached to each of the left and right side members 7, 8. On the other hand, it is firmly fixed via left and right brackets 10 and 12 . Also, the guard bar 15 is positioned below the lower end position of the aqueous urea tank 5 in the vertical direction.

The main role of the guard bar 15 is to prevent the urea water tank 5 from interfering with the road surface and being damaged when the vehicle 1 ascends a steep slope from a horizontal road or descends from a steep slope to a horizontal road. That is, the guard bar 15 contacts the road surface before the urea water tank 5 contacts the road surface, thereby notifying the driver of the danger of contact between the urea water tank 5 and the road surface, and also preventing the urea water tank 5 from contacting the road surface. Protect.

Another purpose is to absorb impact force from the rear of the vehicle 1 at the time of a rear collision and prevent impact force from being directly input to the side members 7 and 8 . Specifically, the impact force from the rear of the vehicle 1 at the time of a rear collision is first received by the guard bar 15 and then transmitted to the side members 7 and 8 via the brackets 10 and 12 .

In addition, since the guard bar 15 is positioned below the lower end of the aqueous urea tank 5 in the vertical direction and is positioned at the rear end of the aqueous urea tank 5, maintenance work for the aqueous urea tank 5 is hindered by the guard bar 15. It can be done from below the urea aqueous solution tank 5 without removing.

The urea water tank 5 is a hollow container in which the urea water solution is stored. As shown in FIG. 1, the aqueous urea tank 5 is provided behind the spare tire 13 so as to extend in the vehicle width direction. The urea water tank 5 has a curved front surface 5a that conforms to the shape of the spare tire 13, and a rear surface 5b that protrudes rearward along the curved shape of the front surface 5a. are fixed to the side members 7 and 8 via brackets (not shown).

A concave portion 33 is formed along the longitudinal direction of the vehicle in a substantially central portion in the vehicle width direction of the upper surface of the aqueous urea tank 5, into which a rod-shaped operating tool for operating the spare tire carrier 21 can be inserted from the rear portion of the vehicle. It has become so.

Further, as shown in FIG. 4, the urea water tank 5 has an air vent 37 for releasing the pressure inside the urea water tank 5 when the pressure inside the urea water tank 5 rises, in addition to the urea water inlet (inlet) 35 . be provided. Further, a leveling valve 41 is provided to return the urea water overflowing inside the urea water tank 5 and the internal air to the urea water supply port (supply port) 39 when the urea water is supplied.

As shown in FIG. 1, a urea water supply pipe (supply pipe) 43 for supplying urea water from outside the vehicle is provided in the urea water tank 5. The urea water supply pipe 43 extends the spare tire cross member 11 forward and backward of the vehicle. It penetrates in the direction and is supported by the spare tire cross member 11 by the supply pipe holding bracket 51 and connected to the urea water inlet 35 of the urea water tank 5 . Further, the portion where the urea water supply pipe 43 penetrates the spare tire cross member 11 is positioned above the spare tire 13 which is the lower structure of the vehicle.

As shown in FIGS. 1 and 5, the urea water supply pipe 43 includes a flexible urea water supply hose portion 43a and a rigid urea water supply pipe portion 43b. there is

A portion of the downstream region of the urea water supply pipe 43 connected to the urea water inlet 35 of the urea water tank 5 is formed by the urea water supply hose portion 43a and connected to the urea water supply port 39 provided on the side of the cargo bed of the vehicle 1. A portion of the upstream region of the urea water supply pipe 43 is formed by a urea water supply hose portion 43a. An intermediate portion of the urea water supply pipe 43 penetrating in the front-rear direction is formed by a urea water supply pipe portion 43b. FIG. 5 shows the arrangement relationship between the urea water supply hose portion 43a and the urea water supply pipe portion 43b that constitute the urea water supply pipe 43. As shown in FIG.

As shown in FIG. 4 , the urea water supply port 39 is a supply port for supplying urea water from the outside of the vehicle, and is installed on the side of the cargo bed of the vehicle 1 side by side with the fuel supply port 45 . The urea water supply pipe 43 has one end connected to the urea water supply port 39 and the other end connected to the urea water inlet 35 of the urea water tank 5 .

According to the embodiment configured as described above, the urea water supply pipe 43 extends in the vehicle front-rear direction so as to pass through the surface of the spare tire cross member 11 on the front side in the vehicle front-rear direction and the surface on the rear side of the vehicle. Since the urea water supply pipe 43 is surrounded by the spare tire cross member 11 , it is protected against splashing stones from below the vehicle and contact with obstacles on the road surface.

In addition, the spare tire 13, which is a vehicle lower structure supported by the spare tire cross member 11, is attached below the spare tire cross member 11, and the portion where the urea water supply pipe 43 penetrates the spare tire cross member 11 is Since the spare tire 13 is located above the spare tire 13, even if the cross-sectional structure of the spare tire cross member 11 is open downward, the spare tire 13 prevents the urea water supply pipe 43 from splashing stones from below the vehicle and obstructing the road surface. Protected against contact with objects, etc. The vehicle lower structure is not limited to a spare tire, and may be a battery pack, a fuel tank, or the like.

Furthermore, since the urea water supply pipe 43 passes through the surface of the spare tire cross member 11 on the front side and the rear side in the vehicle front-rear direction, the urea water supply pipe 43 is placed on the upper surface of the spare tire cross member 11 . Compared to the installation structure, it is possible to secure a space for the vehicle compartment and the cargo bed arranged above the spare tire cross member 11.例文帳に追加

In some embodiments, as shown in FIGS. 2 and 4, the urea water supply port 39 is positioned above the spare tire cross member 11, that is, the urea water supply port 39 is located above the urea water supply pipe 43. The through portion B is located above the through portion B that penetrates the spare tire cross member 11 , and the through portion B is located above the urea water inlet 35 .

For example, in FIG. 2, the height H1 of the center of the urea water supply port 39 (the height from the horizontal road surface) is the center of the urea water supply pipe 43 and is higher than the height H2 of the central position of the penetrating portion B. The height H2 of the center position of the penetrating portion B is higher than the height H3 of the center of the urea water inlet 35 .

Therefore, the urea water supply port 39 is located above the penetration portion B where the urea water supply pipe 43 penetrates the spare tire cross member 11, and this penetration portion B is located above the urea water inlet 35. Therefore, the vertical positional relationship is such that the urea water supplied to the urea water supply port 39 from the outside of the vehicle easily flows into the urea water tank 5 .

FIG. 2 shows a schematic cross-sectional view taken along line AA of FIG. 1, showing a state in which the spare tire 13 is lifted by the spare tire carrier 21 and fixed in contact with the lower surface of the spare tire cross member 11. As shown in FIG. The cross-sectional shape of the spare tire cross member 11 at the penetration portion B through which the urea water supply pipe 43 penetrates is closed by joining a trapezoidal upper member 11a with a lower opening and a lower plate member 11b closing the lower opening. forming a cross section.

Due to the strength and weight of the spare tire cross member 11 and the relationship with other parts, the lower plate member 11b is not installed over the entire width of the vehicle. It may not be provided in the lower portion of the penetrating portion B through which the urea water supply pipe 43 penetrates. In addition, since the lower portion where the spare tire carrier 21 is installed is open for elevating the chain for raising and lowering the spare tire 13, the lower plate member 11b is not provided in this portion.

Through holes 47, 47 are formed in the front and rear walls of the upper member 11a, respectively, and the urea water supply pipe 43 is inserted through the through holes 47, 47 in the front-rear direction through a gap. It should be noted that the urea water supply pipe 43 may be inserted through the through-hole 47 in contact with the inside without a gap.

In some embodiments, as shown in FIG. 3, a protective cylindrical member 49 is installed in the penetrating portion B of the spare tire cross member 11 through which the urea water supply pipe 43 passes, and a gap is formed inside the protective cylindrical member 49. A urea water supply pipe 43 is inserted therethrough.

By providing the protective cylindrical member 49 in this manner and inserting the urea water supply pipe 43 inside thereof, the protection of the urea water supply pipe 43 is further improved. Note that the urea water supply pipe 43 may be inserted through the protective cylindrical member 49 in contact with the inner side without a gap. In this case, since the urea water supply pipe 43 is stably supported, the protection and support functions are further improved.

In some embodiments, as shown in FIGS. 1 to 5, supply pipe holding brackets 51 that hold the urea water supply pipe 43 at positions on the front side and rear side of the spare tire cross member 11 are attached to the spare tire cross member 11. is attached by a bolt 53 to the upper surface of the

As shown in FIG. 5, the supply pipe holding bracket 51 includes a main body portion 51a bolted to the upper surface of the spare tire cross member 11, and protruding from the main body portion 51a to the front side and the rear side of the spare tire cross member 11, respectively. A front clip 55 and a rear clip 57 having a front arm 51b and a rear arm 51c and holding the urea water supply pipe portion 43b of the urea water supply pipe 43 are supported by the front arm 51b and the rear arm 51c, respectively. be done.

5, the supply pipe holding bracket 51 has an arm protruding from the main body portion 51a, and pipes connected to the air vent 37 and the leveling valve 41 provided in the urea water tank 5 are used as spares. It may be supported by the upper surface of the tire cross member 11 . By doing so, the supply pipe holding bracket 51 can be used to bundle the water supply, air vent, and overflow pipes to the urea aqueous solution tank 5 .

Since the urea water supply pipe 43 passing through the spare tire cross member 11 is positioned on the front and rear sides of the spare tire cross member 11 by the supply pipe holding brackets 51, the urea water supply pipe 43 can pass through the spare tire cross member 11. The state is stabilized, and the non-contact state or contact state between the urea water supply pipe 43 and the through hole 47 of the spare tire cross member 11 can be stably maintained. In addition, the inclined state of the penetrating portion B can be stably maintained.

That is, since the supply pipe holding bracket 51 is attached to and integrated with the spare tire cross member 11 , the urea water supply pipe 43 is also displaced in the same manner as the spare tire cross member 11 is displaced. The non-contact or contact state between the urea water supply pipe 43 and the through holes 47, 47 of the spare tire cross member 11, and the non-contact or contact state with the protective cylindrical member 49 described in the embodiment of FIG. maintained.

Therefore, the urea water supply pipe 43 passes through the spare tire cross member 11 and is supported by the spare tire cross member 11, so that when a vertical impact due to the uplift of the vehicle is applied, the urea water supply pipe 43 is pushed through the rear wheels. When a vertical impact is applied to the frame 3 of the vehicle body, the urea water supply pipe 43 and the spare tire cross member 11 move vertically separately, and the urea water supply pipe 43 moves to the spare tire cross member. 11 and other members of the lower portion of the vehicle other than the spare tire cross member 11, and the urea water supply pipe 43 is protected from damage.

The supply pipe holding bracket 51 has a main body portion 51a, and a front arm 51b and a rear arm 51c projecting from the main body portion 51a to the front side and the rear side of the spare tire cross member 11, respectively. Since the body portion 51a is attached to the upper surface of the spare tire cross member 11, that is, the supply pipe holding bracket 51 is attached so as to straddle the upper surface of the spare tire cross member 11, the attachment of the supply pipe holding bracket 51 to the spare tire cross member 11 is easy. stabilize. Therefore, the risk that the supply pipe holding bracket 51 will fall off from the spare tire cross member 11 when the vehicle 1 is running is prevented.

In some embodiments, as shown in FIGS. 1 and 4 , the urea water tank 5 arranged on the vehicle rear side of the spare tire cross member 11 is also attached to the left and right side members 7 similarly to the spare tire cross member 11 . , 8 and arranged to extend in the vehicle width direction.

Thus, the urea water tank 5 disposed on the vehicle rear side of the spare tire cross member 11 is also fixed to the left and right side members 7 and 8 and extends in the vehicle width direction, similarly to the spare tire cross member 11. Therefore, the spare tire cross member 11 and the urea water tank 5 are displaced in substantially the same phase when the vehicle is running. Since the displacement is substantially in the same phase, it is possible to prevent the urea water supply pipe 43 from being bent due to a large difference in displacement between the support portion by the supply pipe holding bracket 51 and the connecting portion of the urea water inlet 35 . Therefore, the durability of the urea water supply pipe 43 can be improved.

In some embodiments, as shown in FIG. 2, the height relationship between the front clip 55 and the rear clip 57 is set such that the position of the front clip 55 is higher than the position of the rear clip 57. . Therefore, the urea water supply pipe 43 is inclined at the penetrating portion B passing through the spare tire cross member 11 so that the supplied urea water descends toward the urea water inlet 35 . Water supply is easy to inflow.

As shown in FIG. 2, the urea water supply pipe 43 is tilted at a center position P1 of the urea water supply pipe 43 at the front clip 55 and at a center position P2 of the urea water supply pipe 43 at the rear clip 57. and the inclination angle is set to θ1. That is, the penetrating portion B that penetrates the spare tire cross member 11 sets the urea water supply pipe 43 to be inclined at the inclination angle θ1.

Further, the inclined state of the urea water supply pipe 43 can be broadly divided into a range in which the inclination angle θ1 set by the penetrating portion B that penetrates the spare tire cross member 11 is maintained until it substantially reaches the outer diameter portion of the spare tire 13 . It has a first inclined region K1 and then a second inclined region K2 that maintains an inclination angle θ2 larger than the inclination angle θ1 and connects to the urea water inlet 35 of the urea water tank 5 .

Thus, even when the spare tire 13 is attached to the lower portion of the spare tire cross member 11 , the urea water supply pipe 43 passing through the spare tire cross member 11 allows the urea water flow of the urea water tank 5 to flow above the spare tire 13 . Since the inclined state is maintained so as to descend toward the inlet 35, the urea water is supplied to the urea water tank 5 smoothly.

Although an example in which the lower structure of the vehicle is the spare tire 13 has been shown, it is not limited to the spare tire 13, and may be a battery pack of a hybrid vehicle, or a fuel tank for storing engine fuel. Well, even in the case of this battery pack and fuel tank, the urea water is smoothly supplied to the urea water tank 5 by maintaining the inclined state of the urea water supply pipe 43 by the supply pipe holding bracket 51 .

The lower structure of the vehicle may not be the spare tire 13, but may be a battery pack of a hybrid vehicle or a fuel tank for storing engine fuel. In the case of the spare tire 13 made of a rubber material, the impact force is transmitted to the spare tire cross member 11 via the spare tire 13, so when a battery pack or fuel tank is attached, In comparison, the load and damage to the spare tire cross member 11 are reduced, and damage to the urea water supply pipe 43 can be prevented or reduced.

In the embodiment described above, an example in which the storage tank is the aqueous urea tank 5 is shown, but the storage tank may be any tank that stores liquid, such as a fuel tank that stores fuel or a tank that stores cleaning liquid. good too.

According to at least one embodiment of the present invention, it is possible to improve the protection performance of the vehicle against impact received during running of the supply pipe that supplies the liquid from the outside of the vehicle to the storage tank, stone splashing from below the vehicle, and the like. Suitable for use in car body structures.

1 vehicle 3 frame 5 urea water tank (storage tank)
7, 8 side member 9 front cross member 11 spare tire cross member (cross member)
13 Spare tire (vehicle undercarriage)
15 Guard bar 17 Rear wheel 19 Axle 21 Spare tire carrier 23 Differential gear 25 Propeller shaft 29 Muffler 31 Fuel tank 35 Urea water inlet (inlet)
39 Urea water supply port (supply port)
43 urea water supply pipe (supply pipe)
43a Urea water supply hose part 43b Urea water supply pipe part 49 Protective cylindrical member 51 Supply pipe holding bracket 53 Bolt 55 Front side clip 57 Rear side clip B Penetration part H1 Height of urea water supply port H2 Height of penetration part H3 Urea water flow Entrance height P1 Center position P2 of the front clip portion Center position K1 of the rear clip portion First inclined area K2 Second inclined areas θ1, θ2 Angle of inclination

Claims (5)

cross members that are fixed to side members that extend in the front-rear direction on the left and right sides of the vehicle and that extend in the vehicle width direction;
a storage tank disposed between the left and right side members and storing a liquid;
a vehicle undercarriage mounted below the cross member and supported by the cross member;
a supply pipe that supplies liquid from outside the vehicle to the storage tank,
the supply pipe is connected to the storage tank by passing through the cross member in the front -rear direction above the lower structure of the vehicle;
1. A vehicle body structure, wherein supply pipe holding brackets are attached to said cross member for supporting said supply pipe passing through said cross member at a position on the front side and a position on the rear side of said cross member. The supply pipe has one end connected to a supply port for supplying liquid from outside the vehicle and the other end connected to an inflow port of the storage tank, and the supply port is located above a penetration portion where the supply pipe penetrates the cross member. 2. The vehicle body structure according to claim 1, wherein the through portion is located above the inlet. 3. The vehicle body structure according to claim 2, wherein the portion where the supply pipe passes through the cross member is inclined downward toward the inlet. 4. The storage tank arranged on the vehicle rear side of the cross member is fixed to the left and right side members and arranged so as to extend in the vehicle width direction. 1. The vehicle body structure according to item 1. The lower structure of the vehicle is a spare tire, and with the spare tire attached to the lower portion of the cross member, the supply pipe passing through the cross member extends above the spare tire toward the storage tank. The vehicle body structure according to any one of claims 1 to 4 , characterized in that it is inclined downward.

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