Vehicle body structure

Abstract

A vehicle body structure (1) comprises: a tank (5) that stores an additive for vehicle exhaust purification; an atmospheric vent pipe (20) that has an atmospheric vent hole (21) openable to the atmosphere and is connected to the tank (5); a chamber (10) that is connected to the tank (5) and is capable of storing the additive; and a side member (2) that extends in a vehicle front-rear direction. The atmospheric vent hole (21) is disposed directly above the chamber (10), and the side member (2) is disposed below the chamber (10) so that at least a portion of the side member (2) overlaps the chamber (10) when viewed in the top-bottom direction.

Description

Vehicle body structure

[0001] The present invention relates to a vehicle body structure.

[0002] Patent Document 1 discloses an atmospheric venting structure for a tank in which an additive for exhaust gas purification is stored. This atmospheric venting structure includes a supply port for supplying the additive, a tank provided at a position lower than the supply port in the vehicle height direction, a chamber provided on the supply port side of the tank in the vehicle height direction, and an atmospheric venting pipe that extends from the tank to the chamber and is supported by a clip provided directly above the chamber.

[0003] Even when attempting to adopt the atmospheric venting structure of Patent Document 1, due to restrictions in the vehicle layout, it may not be possible to vent the atmospheric venting pipe in the space surrounded by the wheelhouse and the splash shield. In such a case, if the atmospheric venting pipe is vented to the atmosphere directly above the chamber, muddy water splashed up by the running of the vehicle may enter the vent tube.

[0004] Japanese Patent Application Laid-Open No. 2018-091206

[0005] Therefore, an object of the present invention is to provide a vehicle body structure capable of preventing water, mud, etc. from entering the atmospheric venting pipe.

[0006] The present invention is composed of the following configuration. A tank for storing an additive for exhaust gas purification of a vehicle, an atmospheric venting pipe having an atmospheric venting hole that can be vented to the atmosphere and connected to the tank, a chamber connected to the tank and capable of storing the additive, and a side member extending in the vehicle front-rear direction. The atmospheric venting hole is disposed directly above the chamber, and the side member is disposed below the chamber so that at least a part thereof overlaps the chamber when viewed from the vertical direction. Vehicle body structure.

[0007] According to the present invention, it is possible to provide a vehicle body structure capable of preventing water, mud, etc. from entering the atmospheric venting pipe.

[0008] Figure 1 is a top view of the rear of a vehicle to which the vehicle body structure according to the embodiment is applied, viewed from above the vehicle. Figure 2 is a side view of the rear of a vehicle to which the vehicle body structure according to the embodiment is applied, viewed from the outside in the vehicle width direction. Figure 3 is a schematic diagram showing the structure of the SCR system. Figure 4 is an enlarged view of the area around the SCR system in Figure 3. Figure 5 is a side view of the SCR system, with the tank not shown, viewed from the inside in the vehicle width direction. Figure 6 is a front view of the SCR system, with the tank not shown, viewed from the front of the vehicle. Figure 7 is a cross-sectional view taken along the line VII-VII in Figure 5. Figure 8 is an enlarged side view showing the area around the box section with the cover removed in Figure 5. Figure 9 is an enlarged side view of the area around the atmospheric vent hole of the atmospheric vent pipe, viewed from the outside in the vehicle width direction.

[0009] The vehicle body structure according to the embodiment will be described with reference to the drawings. Note that the embodiments shown below are merely illustrative, and there is no intention to exclude various modifications or applications of technologies not explicitly shown in the embodiments below. Each configuration of the embodiment can be modified in various ways without departing from their spirit. Furthermore, they can be selected or combined as needed. In the figures, "front" indicates the front of the vehicle, "rear" indicates the rear of the vehicle, "up" indicates the upper part of the vehicle, "down" indicates the lower part of the vehicle, "left" indicates the left side of the vehicle, "right" indicates the right side of the vehicle, "outside" indicates the outside in the vehicle width direction, and "inside" indicates the inside in the vehicle width direction. Note that the left-right direction is sometimes also referred to as the vehicle width direction.

[0010] Figure 1 is a top view of the rear of a vehicle to which the body structure according to this embodiment is applied, viewed from above the vehicle. Figure 2 is a side view of the rear of a vehicle to which the body structure according to this embodiment is applied, viewed from the outside in the width direction of the vehicle. As shown in Figures 1 and 2, the body structure 1 of this embodiment is applied to the rear structure of a vehicle such as an automobile.

[0011] The vehicle body structure 1 includes a pair of side members 2, 2 that extend in the longitudinal direction of the vehicle and are spaced apart from each other in the vehicle width direction, a rear cross member 3 that connects the rear ends of the pair of side members 2, 2 in the vehicle width direction, and a front cross member 4 that connects the pair of side members 2, 2 in the vehicle width direction in front of the rear cross member 3. A pair of rear wheels 6, 6 are positioned on the outer sides of the left and right side members 2, 2 in the vehicle width direction.

[0012] Tank 5 is fixed to the lower part of the left side member 2 and the rear cross member 3 via brackets (not shown). Tank 5 is a resin container that stores additives (for example, urea aqueous solution or ammonia aqueous solution) used in the SCR system 9 (Selective Catalytic Reduction System) for purifying the vehicle's exhaust gas. Tank 5 removes nitrogen oxides (NOx) contained in the exhaust gas emitted from the internal combustion engine mounted on the vehicle from nitrogen (N ２ ) and water (H ２ The additive that reduces to O) is stored in the vehicle.

[0013] Figure 3 is a schematic diagram showing the structure of the SCR system. As shown in Figures 1 to 3, the SCR system 9 includes a tank 5 for storing additives, a supply port 7 for supplying additives to the tank 5 via a filler pipe 40, a chamber 10 connected to the tank 5 via a leveling pipe 30 and capable of storing additives, and an atmospheric vent pipe 20 connected to the tank 5 and having an atmospheric vent hole 21 that can be opened to the atmosphere.

[0014] The supply port 7 is located, for example, in a recess provided on the side of the vehicle, alongside the fuel filler port. The tank 5 is located lower than the supply port 7 in the vehicle height direction. The tank 5 is, for example, a container made of synthetic resin that is not corroded by the additive, but is not limited to this. In the illustrated example, the tank 5 is located below the rear cross member 3 at the rear of the vehicle, and is located lower than the cargo compartment or cargo bed in the vehicle height direction, but is not limited to this. The supply port 7 and the tank 5 are connected by a filler pipe 40, and the additive supplied from the supply port 7 is supplied to the tank 5 through the filler pipe 40.

[0015] A filler pipe 40 is connected in a continuous manner between the supply port 7 and the tank 5, and a leveling pipe 30 is routed parallel to the filler pipe 40. The lower end of the leveling pipe 30 is open to the internal space of the tank 5, and its upper end is connected to the supply port 7. The leveling pipe 30 is vented to the atmosphere via the supply port 7 when the additive is replenished. A cap 8 is attached to the supply port 7 so that it can be opened and closed. When the cap 8 is attached, the supply port 7 is closed, and the upper end of the leveling pipe 30 is closed to the outside of the vehicle. On the other hand, when the cap 8 is removed, the upper end of the leveling pipe 30 is open to the atmosphere.

[0016] For example, the filler pipe 40 is connected to the side of the tank 5, and the leveling pipe 30 is connected to the top surface of the tank 5. The leveling pipe 30 is connected to the tank 5 at a position at least higher than the connection point between the filler pipe 40 and the tank 5. The additive stored in the tank 5 is drawn up by the additive pump 51 at an appropriate timing depending on the operating state of the engine installed in the vehicle, and supplied to the additive injector 53 through the additive piping 52. The additive injector 53 is positioned upstream of the NOx selective reduction catalyst interposed in the exhaust passage.

[0017] An atmospheric release valve 54 (ventilation valve) is installed on the upper side of the tank 5 to maintain the internal pressure of the tank 5 at or near atmospheric pressure. The atmospheric release valve 54 functions to balance the internal pressure of the tank 5 with the external pressure while maintaining liquid-tightness against additives stored inside the tank 5 and external moisture. The lower end of the atmospheric release pipe 20 is connected to the atmospheric release valve 54. On the other hand, the atmospheric release hole 21 at the upper end of the atmospheric release pipe 20 is opened to the atmosphere inside the box section 60 provided in the chamber 10. The position of the atmospheric release valve 54 is set near the top of the tank 5 so that it does not sink below the liquid level even when the vehicle body is tilted.

[0018] A hollow, container-shaped chamber 10 is interposed in the middle of the leveling pipe 30. The chamber 10 is a "liquid reservoir" that holds any additive that flows back up the leveling pipe 30 during additive replenishment. In other words, the internal space of the chamber 10 functions as a space for storing excess additive when the liquid level reaches the upper limit during additive replenishment and additive replenishment continues. The chamber 10 is preferably positioned near the supply port 7.

[0019] As shown in Figures 1 and 2, the tank 5 is positioned on the left side, which is on the outside in the vehicle width direction, between the pair of side members 2, 2. The position of the tank 5 is not particularly limited, and for example, it may be positioned at any position between the pair of side members 2, 2.

[0020] The tank 5 has side outer walls 71 that constitute the front, rear, left, and right sides of the tank 5. The side outer walls 71 include an outer wall 71a located on the side of the side member 2 (left side) on the outside in the vehicle width direction, an arc-shaped inner wall 71b located on the inside in the vehicle width direction (right side), a front side wall 71c located on the front side, and a rear side wall 71d located on the rear side. These outer wall 71a, inner wall 71b, front side wall 71c, and rear side wall 71d are connected to each other and close off the front, rear, left, and right sides of the tank 5. A spare tire may be placed on the inside in the vehicle width direction of the arc-shaped inner wall 71b. The outer wall 71a is located on the inside in the vehicle width direction (right side) of the left side member 2.

[0021] The rear of tank 5 is wider in the vehicle width direction than the front of tank 5, forming a large space that can accommodate the additive pump 51 (see Figure 3) and a heater (not shown). The front of tank 5 is connected to the atmospheric outlet pipe 20, the leveling pipe 30, and the filler pipe 40. The longitudinal dimension of tank 5 is larger than the vehicle width direction, and therefore tank 5 has an elongated shape in the longitudinal direction. The rear side wall 71d, which is the rear end of tank 5, is located behind the rear cross member 3, and the front side wall 71c, which is the front end of tank 5, is located in front of the rear cross member 3. The front side wall 71c, which is the front end of tank 5, is located near the center of the chamber 10 in the longitudinal direction.

[0022] Figure 4 is an enlarged view of the area around the SCR system in Figure 3. Figure 5 is a side view of the SCR system, with the tank not shown, viewed from the inside in the vehicle width direction. Figure 6 is a front view of the SCR system, with the tank not shown, viewed from the front of the vehicle.

[0023] As shown in Figures 4 to 6, the chamber 10 is formed by joining together a box-shaped upper part 10A with an open bottom and a box-shaped lower part 10B with an open top, but the configuration is not limited to this.

[0024] The chamber 10, like the tank 5, has an elongated shape in the front-to-back direction. Referring also to Figure 1, the rear end of the chamber 10 is located in front of the rear cross member 3 and behind the front end (front side wall 71c) of the tank 5. Also, the front end of the chamber 10 is located in front of the front end (front side wall 71c) of the tank 5 and behind the front cross member 4. Therefore, overall, the chamber 10 is located in front of the tank 5. Furthermore, as shown in Figure 2, the chamber 10 is located above the side member 2 and therefore above the tank 5.

[0025] As shown in Figure 4, the chamber 10 has a front-rear extension portion 13 that extends in the front-rear direction along the side member 2, and a projection portion 15 that protrudes outward (left side) in the vehicle width direction from the midpoint of the front-rear extension portion 13 in the front-rear direction. The outer end (left end) of the front-rear extension portion 13 in the vehicle width direction and the inner end (right end) of the side member 2 in the vehicle width direction slightly overlap when viewed from above. The projection portion 15 extends in the vehicle width direction to near the outer end (left end) of the side member 2 in the vehicle width direction, and the entire projection portion 15 overlaps the side member 2 when viewed from above.

[0026] Thus, the side member 2 is positioned below the chamber 10 such that at least a portion of it overlaps with the chamber 10 when viewed from above (in the illustrated example, the left end of the front-rear extension portion 13 of the chamber 10 and the entire protruding portion 15). Furthermore, at least a portion of the side member 2 is positioned outward in the vehicle width direction from the chamber 10 (in the illustrated example, the portion excluding the left end of the front-rear extension portion 13 of the chamber 10 and the entire protruding portion 15). With this configuration, water, mud, etc., splashed up by the rear wheels 6 are repelled by the side member 2 and the chamber 10, preventing them from reaching the atmospheric vent 21 located in the box portion 60 directly above the chamber 10, as will be described later.

[0027] As shown in Figures 4 to 6, the leveling pipe 30 and filler pipe 40 are routed in the space S between the tank 5 and the chamber 10.

[0028] The leveling pipe 30 includes a first leveling pipe 30A that connects the tank 5 and the lower part 10B of the chamber 10, and a second leveling pipe 30B that connects the lower part 10B of the chamber 10 to the supply port 7. The first leveling pipe 30A is routed in the space S between the tank 5 and the chamber 10, mainly in the area below the chamber 10 and on the inside in the vehicle width direction. The first leveling pipe 30A is inclined upward as it extends forward from the front of the tank 5, and the front end of the first leveling pipe 30A bends outward (to the left) in the vehicle width direction to connect to the inner surface in the vehicle width direction of the lower part 10B of the chamber 10. That is, the point where the first leveling pipe 30A connects to the chamber 10 is the lower end of the inner surface in the vehicle width direction of the front end of the front-rear extending portion 13 of the chamber 10. The second leveling pipe 30B extends rearward from the rear surface of the lower part 10B of the chamber 10, and bends from the rear side to connect to the supply port 7. It can also be said that the second leveling pipe 30B extends from the lower part of the rear surface of the front-rear extension portion 13 toward the rear.

[0029] The filler pipe 40 includes a first filler pipe 40A that connects to the tank 5 and extends forward, a second filler pipe 40B that connects to the first filler pipe 40A and makes a U-turn towards the rear and upward, and a third filler pipe 40C that connects to the second filler pipe 40B and extends rearward. The first filler pipe 40A is routed mainly in the area of ​​space S below the chamber 10 and towards the inside in the vehicle width direction. The first filler pipe 40A is slightly inclined upward as it extends forward from the front of the tank 5. The second filler pipe 40B is routed mainly in the area of ​​space S below the chamber 10 and towards the inside in the vehicle width direction. The shape of the second filler pipe 40B when viewed from the vertical direction and the vehicle width direction is approximately U-shaped. The front end of the second filler pipe 40B (the bottom of the approximately U-shape) is located behind the connection point between the first leveling pipe 30A and the chamber 10. The third filler pipe 40C is routed in the space S, mainly in the area inside the chamber 10 in the vehicle width direction, parallel to the lower part 10B of the chamber 10. The third filler pipe 40C extends behind the chamber 10 and is connected to the supply port 7.

[0030] Thus, the piping such as the leveling pipe 30 and the filler pipe 40 is routed in the space S between the tank 5 and the chamber 10 in the vehicle width direction and in the vertical direction. In contrast, the atmospheric vent pipe 20 is routed to bypass the space S in which the leveling pipe 30 and the filler pipe 40 are routed. That is, the atmospheric vent pipe 20 has a first part 20A located below the space S and a second part 20B located in front of the space S (laterally, one side in the front-rear direction), and is routed to bypass the space S. The second part 20B may be located behind the space S (laterally, one side in the front-rear direction), to the left of the space S (laterally, one side in the vehicle width direction), or to the right of the space S (laterally, one side in the vehicle width direction), etc., so that the atmospheric vent pipe 20 bypasses the space S. That is, the second part 20B may be located to the side of the space S so that the atmospheric vent pipe 20 bypasses the space S.

[0031] In this way, by having the atmospheric vent pipe 20, which has little functional impact even when extended, bypass the space S, the degree of freedom in the layout of the leveling pipe 30 and filler pipe 40 in the space S between the tank 5 and the chamber 10 can be improved. However, extending or bypassing the leveling pipe 30 or filler pipe 40 is undesirable because it may affect the water supply of the additive.

[0032] As shown in Figure 6, the first portion 20A of the atmospheric vent pipe 20 extends outward (to the left) in the vehicle width direction as it moves forward from the front of the tank 5. As shown in Figures 5 and 6, in the vertical direction, the first portion 20A connects to the front of the tank 5 and extends downward as it moves forward, then bends and extends upward as it moves forward. The front end of the first portion 20A connects to the second portion 20B behind the chamber 10.

[0033] Here, the first portion 20A of the atmospheric vent pipe 20, the leveling pipe 30, and the filler pipe 40 each extend in the front-rear direction, and the first portion 20A of the atmospheric vent pipe 20, the leveling pipe 30, and the filler pipe 40 are arranged so as not to overlap when viewed from the vehicle width direction. Note that "not to overlap when viewed from the vehicle width direction" means that it is sufficient if there are parts that do not overlap. Referring to Figure 5, there are parts where the first portion 20A of the atmospheric vent pipe 20 and the filler pipe 40 overlap when viewed from the vehicle width direction, but there are also parts that do not overlap, so it falls under the category of "not to overlap when viewed from the vehicle width direction." With this arrangement, the atmospheric vent pipe 20 and the leveling pipe 30 and filler pipe 40 do not strongly interfere with each other in the event of a side collision with the vehicle, thus preventing wear and tear.

[0034] The second portion 20B of the atmospheric vent pipe 20 extends upward and outward (to the left) in the vehicle width direction from the first portion 20A, then bends rearward and is inserted into and supported by a box portion 60 provided on the upper surface of the front end of the chamber 10. As will be described in detail later, an atmospheric vent hole 21 is provided at the tip (rear end) of the second portion 20B, and the atmospheric vent hole 21 is surrounded by the box portion 60. In addition, the second portion 20B of the atmospheric vent pipe 20 is held by a holding portion 11 of the chamber 10 near the box portion 60.

[0035] In this way, since the atmospheric vent pipe 20 extends from the front of the tank 5 to the front of the chamber 10, the detour distance through space S can be shortened, and the degree of freedom in piping layout can be efficiently increased.

[0036] As described above, the end of the second portion 20B of the atmospheric vent pipe 20 that is open to the atmosphere is inserted into and supported by a box portion 60 provided on the upper surface of the front end of the chamber 10. The structure of the box portion 60 will be described in detail below.

[0037] Figure 7 is a cross-sectional view taken along the line VII-VII in Figure 5. Figure 8 is an enlarged side view showing the area around the box section with the cover removed in Figure 5. Figure 9 is an enlarged side view of the area around the atmospheric vent hole of the atmospheric vent pipe, viewed from the outside in the vehicle width direction.

[0038] As shown in Figure 7, the box portion 60 includes a box body 80 which is integrally formed with the chamber 10 and constitutes the portion of the box portion 60 except for the inner (right) portion in the vehicle width direction, and a cover 90 which constitutes the inner (right) portion of the box portion 60 in the vehicle width direction and is arranged to cover the inner (right) portion of the box body 80 in the vehicle width direction.

[0039] The box body 80 has a bottom on the outside (left side) in the vehicle width direction and is a bottomed container shape with an opening on the inside (right side) in the vehicle width direction. The box body 80 is integrally formed with the chamber 10, and its lower end is connected to the chamber 10. The cover 90 is separate from the box body 80 (chamber 10) and has a substantially planar shape that extends in the vertical and front-rear directions (extending perpendicular to the vehicle width direction). The cover 90 constitutes the inner surface of the box 60 in the vehicle width direction. In this example, the box body 80 and the cover 90 are separate, but they may be integrally formed.

[0040] As shown in FIG. 7, between the box body 80 and the cover 90, a first discharge region T1, a second discharge region T2, and a storage region T3 are formed in order from below. The lower first and second discharge regions T1 and T2 are regions for discharging mud, water, etc. and preventing the intrusion of mud, water, etc. into the storage region T3. The uppermost storage region T3 is a region for housing the atmosphere opening hole 21 of the atmosphere opening pipe 20. The first discharge region T1 and the second discharge region T2 communicate with each other through a first gap U1, and the second discharge region T2 and the storage region T3 communicate with each other through a second gap U2.

[0041] As shown in FIG. 7, an atmosphere opening hole 21 is provided at the tip (rear end) of the second part 20B of the atmosphere opening pipe 20, and the atmosphere opening hole 21 is surrounded by the box part 60. In the illustrated example, the atmosphere opening hole 21 is arranged in the uppermost storage region T3 within the box part 60.

[0042] As shown in FIGS. 7 to 9, an insect-proof cap 23 for preventing the intrusion of insects is attached to the atmosphere opening hole 21. The insect-proof cap 23 has a bottomed cylindrical shape with a bottom at the rear of the vehicle and extending in the front-rear direction. And the insect-proof cap 23 has a plurality of openings 23a, 23a facing outward in the vehicle width direction (left side). The openings 23a have, for example, a mesh structure finer than the size of insects, preventing the intrusion of insects while allowing the flow of air. Therefore, the atmosphere opening hole 21 of the atmosphere opening pipe 20 is opened to the outside toward the outside in the vehicle width direction (left side) in the storage region T3 within the box part 60 through the openings 23a.

[0043] Further, the box part 60 has a ventilation port 61 communicating with the outside at its lower part, and the ventilation port 61 communicates the first discharge region T1 of the box part 60 with the outside toward the inside in the vehicle width direction (right side). Therefore, the atmosphere opening pipe 20 can be opened to the outside through the atmosphere opening hole 21, the openings 23a of the insect-proof cap 23, the storage region T3, the second gap U2, the second discharge region T2, the first gap U1, the first discharge region T1, and the ventilation port 61 of the box part 60.

[0044] Thus, since the atmosphere release hole 21 of the atmosphere release pipe 20 is surrounded by the box portion 60 around it, the atmosphere release hole 21 can be protected from water, mud, etc. splashed up during vehicle travel. Also, water and mud splashed up by the rear wheel 6 tend to fly toward the atmosphere release hole 21 from above the vehicle, below the vehicle, and outward in the vehicle width direction. Therefore, by facing the ventilation port 61 of the box portion 60 surrounding the atmosphere release hole 21 of the atmosphere release pipe 20 toward the inner side in the vehicle width direction where water and mud are less likely to fly, intrusion of water, mud, etc. into the box portion 60 can be suppressed. Accordingly, the atmosphere release hole 21 can be more reliably protected from water, mud, etc.

[0045] Also, while the atmosphere release hole 21 is disposed at the upper part inside the box portion 60, the ventilation port 61 is formed at the lower part of the box portion 60. That is, the atmosphere release hole 21 of the atmosphere release pipe 20 is disposed above the ventilation port 61 of the box portion 60. Therefore, even if water, mud, etc. intrude from the ventilation port 61, it is configured to be difficult for them to reach the atmosphere release hole 21.

[0046] Also, since the ventilation port 61 is formed at the lower end portion of the box portion 60, even if water, mud, etc. intrude into the box portion 60, they do not accumulate inside the box portion 60 and can be discharged from the ventilation port 61.

[0047] Also, since the box portion 60 is provided directly above the chamber 10, water, mud, etc. flying from below the vehicle can be blocked by the chamber 10, preventing intrusion into the box portion 60.

[0048] Also, the box portion 60 is provided at the outer end in the vehicle width direction of the upper surface of the front-rear extending portion 13 of the chamber 10 (see FIG. 4). Here, as described above, the ventilation port 61 of the box portion 60 communicates with the outside toward the inner side in the vehicle width direction. Therefore, by providing the box portion 60 at the outer end in the vehicle width direction of the upper surface of the front-rear extending portion 13 of the chamber 10, the distance between the ventilation port 61 of the box portion 60 and the inner surface in the vehicle width direction of the chamber 10 can be set long, so that water, mud, etc. flying from below the vehicle and from the inner side in the vehicle width direction can be blocked by the chamber 10, more reliably preventing intrusion into the box portion 60.

[0049] Furthermore, as shown in Figure 4, the atmospheric vent 21 is positioned directly above the chamber 10, and the side member 2 is positioned below the chamber 10 such that at least a portion of it overlaps with the chamber 10 when viewed from above (in the illustrated example, the left end of the front-to-rear extension portion 13 of the chamber 10 and the entire protruding portion 15). Therefore, water and mud splashed up by the rear wheel 6 are repelled by the side member 2 and the chamber 10, preventing them from reaching the atmospheric vent 21 of the atmospheric vent pipe 20.

[0050] Furthermore, as shown in Figure 4, most of the front-to-rear extension portion 13 of the chamber 10 is positioned inward (to the right) in the vehicle width direction compared to the side member 2. That is, at least a portion of the side member 2 is positioned outward in the vehicle width direction compared to the chamber 10 (in the illustrated example, the portion excluding the left end of the front-to-rear extension portion 13 of the chamber 10 and the entire protruding portion 15). With this configuration, water, mud, etc., splashed up by the rear wheels are repelled by the side member 2 and the chamber 10, preventing them from reaching the atmospheric vent 21 located in the box portion 60 directly above the chamber 10.

[0051] Furthermore, the box portion 60 of the chamber 10 is positioned further inward in the vehicle width direction than the side member 2. Similarly, the atmospheric vent 21 housed within the box portion 60 is positioned further inward in the vehicle width direction than the side member 2. Since water and mud tend to move from the outside in the vehicle width direction towards the atmospheric vent 21, positioning the side member 2 further outward in the vehicle width direction than the box portion 60 and the atmospheric vent 21 prevents water and mud from reaching the atmospheric vent 21.

[0052] Furthermore, the box portion 60 of the chamber 10 is positioned above the side members 2. Since water and mud tend to move from below towards the atmospheric vent 21, positioning the side members below the box portion prevents water and mud from reaching the atmospheric vent.

[0053] As shown in Figure 7, the box body 80 has a bottom surface 81 whose inner end 81a (right end) in the vehicle width direction communicates with the ventilation opening 61. The inner end 81a (right end) of the bottom surface 81 in the vehicle width direction is the lowest part of the box body 80 and is the point where it connects to the upper surface of the chamber 10. The inner end 81a (right end) of the bottom surface 81 in the vehicle width direction and the lower end of the cover 90 are separated vertically from each other and the ventilation opening 61 is formed between them.

[0054] The bottom surface 81 is a first inclined surface that slopes upward as it is directed outward (to the left) in the vehicle width direction. Therefore, even if water or mud enters through the vent 61, the bottom surface 81, which is the first inclined surface, can discharge the water or mud. The inclination angle of the bottom surface 81 with respect to the horizontal direction is preferably set to an angle that allows water and mud (especially mud) to be discharged, for example, to about 30°.

[0055] Furthermore, the box body 80 has a first wall portion 83 that connects to the outer end (left end) in the vehicle width direction of the bottom surface 81, extends upward, and then extends inward in the vehicle width direction. In the illustrated example, the first wall portion 83 includes an outer wall 83a extending upward from the outer end (left end) in the vehicle width direction of the bottom surface 81, and an upper wall 83b extending inward (right side) in the vehicle width direction from the upper end of the outer wall 83a. With such a first wall portion 83 provided, even if water or mud seeps in along the bottom surface 81, the first wall portion 83 can repel the water or mud.

[0056] The cover 90 (the inner surface of the box portion 60 in the vehicle width direction) has a flat plate portion 91 with a substantially planar shape perpendicular to the vehicle width direction, a first protrusion 93 that protrudes from the lower end of the flat plate portion 91 toward the inside of the box portion 60, that is, toward the outside (left side) in the vehicle width direction, and a second protrusion 95 that protrudes from the vertical middle portion of the flat plate portion 91 toward the outside (left side) in the vehicle width direction. The first protrusion 93 is positioned slightly below the upper wall 83b of the first wall portion 83.

[0057] In the cross-section shown in Figure 7, the region enclosed by the bottom surface 81, the first wall portion 83, and the first protrusion 93 is the first discharge region T1. Also in the cross-section shown in Figure 7, the region enclosed by the inner wall 85a of the second wall portion 85 (described later), the first protrusion 93, the second protrusion 95, and the flat plate portion 91 between the first protrusion 93 and the second protrusion 95 is the second discharge region T2. ​​A first gap U1 is formed between the outer end (left end) in the vehicle width direction of the first protrusion 93 and the inner end (right end) in the vehicle width direction of the upper wall 83b of the first wall portion 83, connecting the upper and lower first and second discharge regions T1 and T2.

[0058] By adopting this configuration, even if water or mud were to enter through the vent 61, it could be repelled by the first protrusion 93 and the first wall portion 83 located above the vent 61. Furthermore, the vent 61 of the box portion 60 and the atmospheric release hole 21 of the atmospheric release pipe 20 can be opened to the atmosphere through the first gap U1.

[0059] Furthermore, it is preferable that the size of the first gap U1 be set so that even if water or mud (especially mud) enters the upper second discharge area T2, it can be discharged downward through the first gap U1. Therefore, the widthwise dimension of the first protrusion 93 is set to be relatively small, and the first protrusion 93 and the upper wall 83b of the first wall 83 do not overlap when viewed from above. In this embodiment, the widthwise dimension of the first protrusion 93 is set to be shorter than the widthwise dimension of the second protrusion 95, which will be described later, to ensure that mud is removed from the second discharge area T2 through the first gap U1.

[0060] The box body 80 has a second wall portion 85 that connects to the inner end in the vehicle width direction of the upper wall 83b of the first wall portion 83, extends upward, and then extends outward (left side) in the vehicle width direction. In the illustrated example, the second wall portion 85 includes an inner wall 85a extending upward from the inner end (right end) in the vehicle width direction of the upper wall 83b of the first wall portion 83, and an inclined wall 85b that slopes upward from the upper end of the inner wall 85a toward the outward (left side) in the vehicle width direction. The upper surface of the inclined wall 85b forms a second inclined surface that slopes upward toward the outward (left side) in the vehicle width direction. Therefore, even if water enters through the vent 61 or the first gap U1, the water can be discharged by the inclined wall 85b having the second inclined surface.

[0061] The inclination angle of the inclined wall 85b with respect to the horizontal is preferably set to an angle that allows water to be discharged, for example, to about 15°. As mentioned above, the inclination angle of the bottom surface 81 (first inclined surface) is set to about 30°, which is larger than the inclination angle of the inclined wall 85b (second inclined surface). In this way, by setting a large inclination angle of the bottom surface 81 (first inclined surface) into which mud can penetrate, the discharge of mud by the bottom surface 81 (first inclined surface) is made more reliable. Furthermore, since the mud is repelled by the second protrusion 95, which will be described later, and the possibility of mud penetrating the inclined wall 85b is very low, the inclination angle of the inclined wall 85b is set to about 15°.

[0062] The second protrusion 95 is positioned above the first protrusion 93 and protrudes outward in the vehicle width direction from the flat plate portion 91. More specifically, the second protrusion 95 is located above the inner end 85c (right end) in the vehicle width direction of the inclined wall 85b (second inclined surface) of the second wall portion 85. In the illustrated example, the second protrusion 95 is positioned at approximately the same height in the vertical direction as the outer end 85d (left end) in the vehicle width direction of the inclined wall 85b (second inclined surface) of the second wall portion 85.

[0063] The outer end (left end) in the vehicle width direction, which is the tip of the second protrusion 95, and the inner end 85c (right end) in the vehicle width direction of the inclined wall 85b (second inclined surface) are positioned to overlap when viewed from above. A second gap U2 is formed between the outer end of the second protrusion 95 in the vehicle width direction and the inner end 85c in the vehicle width direction of the inclined wall 85b of the second wall 85 in the vehicle width direction, in the vertical direction, connecting the left and right second discharge areas T2 and the storage area T3.

[0064] Therefore, even if water or mud enters through the vent 61 or the first gap U1, it can be discharged by the second protrusion 95 or the inclined wall 85b (second inclined surface) of the second wall 85. In addition, the vent 61 of the box section 60 and the atmospheric opening 21 of the atmospheric opening pipe 20 can be opened to the atmosphere via the first gap U1 and the second gap U2. Furthermore, while the first gap U1 connects the upper and lower first discharge area T1 and the second discharge area T2, the second gap U2 connects the left and right second discharge area T2 and the containment area T3, so the orientation of the first gap U1 and the second gap U2 changes, resulting in the effect of making it difficult for water or mud to enter.

[0065] The region above the second protrusion 95 is the containment region T3, and therefore, the atmospheric vent 21 of the atmospheric vent pipe 20, which is located in the containment region T3, is positioned above the second protrusion 95. In this way, since the atmospheric vent 21 of the atmospheric vent pipe 20 is positioned above the first wall portion 83, the second wall portion 85, the first protrusion 93, the second protrusion 95, etc., the possibility of water, mud, etc. entering the atmospheric vent 21 can be made very low.

[0066] Furthermore, the atmospheric vent 21 of the atmospheric vent pipe 20 opens outward in the vehicle width direction through the opening 23a of the insect-proof cap 23 within the housing area T3 of the box section 60. In other words, while the ventilation opening 61 of the box section 60 opens inward in the vehicle width direction, the atmospheric vent 21 of the atmospheric vent pipe 20 opens outward in the vehicle width direction. Therefore, even if water or mud enters through the ventilation opening 61 of the box section 60, it is difficult for the water or mud to reach the atmospheric vent 21 of the atmospheric vent pipe 20.

[0067] Thus, the present invention is not limited to the embodiments described above. It is also intended and within the scope of protection to be provided for the combination of each configuration of the embodiments, as well as for modifications and applications by those skilled in the art based on the description in the specification and well-known technology.

[0068] As described above, the following is disclosed in this specification: [1] A vehicle body structure comprising: a tank for storing an additive for purifying the exhaust gas of a vehicle; an atmospheric vent pipe connected to the tank and having an atmospheric vent hole that can be opened to the atmosphere; a chamber connected to the tank and capable of storing the additive; and a side member extending in the longitudinal direction of the vehicle, wherein the atmospheric vent hole is located directly above the chamber, and the side member is located below the chamber such that at least a portion of it overlaps with the chamber when viewed from above.

[0069] In this vehicle structure, the atmospheric vent of the atmospheric vent pipe is positioned directly above the chamber, and furthermore, a portion of the side member positioned below the chamber overlaps with the chamber when viewed from above. Therefore, water and mud splashed up by the tires are repelled by the side member and the chamber, preventing them from reaching the atmospheric vent of the atmospheric vent pipe.

[0070] [2] The vehicle body structure according to [1], wherein at least a portion of the side member is positioned outward in the vehicle width direction from the chamber.

[0071] According to this vehicle body structure, water and mud tend to move towards the chamber from the outside in the vehicle width direction. Therefore, by positioning at least a portion of the side members to be further outward than the chamber in the vehicle width direction, the side members prevent water and mud from reaching the atmospheric vent.

[0072] [3] The vehicle body structure according to [1] or [2], wherein the atmospheric vent is located further inward in the vehicle width direction than the side member.

[0073] According to this vehicle body structure, water and mud tend to move from the outside in the vehicle width direction toward the atmospheric vents. Therefore, by positioning the side members further outward in the vehicle width direction than the atmospheric vents, the side members prevent water and mud from reaching the atmospheric vents.

[0074] [4] The vehicle body structure according to any one of [1] to [3], wherein the chamber comprises a box portion surrounding the atmospheric vent of the atmospheric vent pipe, the box portion has a vent that communicates with the outside, and the vent is directed inward in the vehicle width direction, causing the box portion to communicate with the outside.

[0075] With this vehicle body structure, the atmospheric vent of the atmospheric vent pipe is surrounded by a box-like structure, thus protecting it from water, mud, and other debris. Furthermore, water and mud typically splashed up by the tires, which are located on the outermost edges of the vehicle, tend to fly towards the atmospheric vent from above, below, and the outer edges of the vehicle. Therefore, by positioning the vents of the box-like structure surrounding the atmospheric vent towards the inner edges of the vehicle (where less water and mud are likely to be splashed), the intrusion of water and mud into the box-like structure can be suppressed. Consequently, the atmospheric vent can be more reliably protected from water, mud, and other debris.

[0076] [5] The vehicle body structure according to [4], wherein the box portion of the chamber is positioned further inward in the vehicle width direction than the side member.

[0077] According to this vehicle body structure, water and mud tend to move from the outside in the vehicle width direction towards the atmospheric vents. Therefore, by positioning the side members further out in the vehicle width direction than the box section, the side members can prevent water and mud from reaching the atmospheric vents.

[0078] [6] The vehicle body structure according to [4] or [5], wherein the box portion of the chamber is positioned above the side member.

[0079] According to this vehicle body structure, water and mud tend to move from below towards the air vents. By positioning the side members below the box section, the side members can prevent water and mud from reaching the air vents.

[0080] [7] A vehicle body structure according to any one of [1] to [6], comprising piping arranged in the space between the tank and the chamber, wherein the atmospheric vent has a first portion located below the space and a second portion located to the side of the space, and is arranged to bypass the space.

[0081] This vehicle structure allows for greater flexibility in piping layout within the space between the tank and chamber, as the atmospheric vent pipe, which has minimal functional impact even when extended, can bypass the space.

[0082] [8] A vehicle body structure according to any one of [1] to [7], comprising a box portion surrounding the atmospheric vent of the atmospheric vent pipe, wherein the box portion has a vent that communicates with the outside, and the vent is open toward the inside in the vehicle width direction.

[0083] With this vehicle body structure, the atmospheric vent of the atmospheric vent pipe is surrounded by a box-like structure, protecting it from water, mud, and other debris splashed up during vehicle operation. Furthermore, water and mud typically splashed up by the tires, which are located on the outermost edges of the vehicle, tend to fly towards the atmospheric vent from above, below, or the outer edges of the vehicle. Therefore, by positioning the vents of the box-like structure surrounding the atmospheric vent towards the inner edges of the vehicle (where less water and mud are likely to splash), the intrusion of water and mud into the box-like structure can be suppressed. Consequently, the atmospheric vent can be more reliably protected from water and mud.

[0084] Furthermore, the following is disclosed in this specification: (1) A vehicle body structure comprising: a tank for storing an additive for purifying the exhaust gas of a vehicle; a chamber connected to the tank and capable of storing the additive; an atmospheric vent pipe having an atmospheric vent hole that can be opened to the atmosphere, connected to the tank and extending to the chamber; and piping (leveling tube, filler tube) arranged in the space between the tank and the chamber, wherein the atmospheric vent hole is located above the chamber, and the atmospheric vent pipe has a first portion located below the space and a second portion located to the side of the space, and is arranged to bypass the space.

[0085] This vehicle structure allows for greater flexibility in piping layout within the space between the tank and chamber, as the atmospheric vent pipe, which has minimal functional impact even when extended, can bypass the space.

[0086] (2) The second part is the vehicle body structure described in (1), located on one side in the front-rear direction of the space.

[0087] This vehicle structure allows for greater flexibility in the layout of piping in the space between the tank and the chamber.

[0088] (3) The vehicle body structure according to (1) or (2), wherein the first portion of the atmospheric vent pipe and the piping each extend in the front-rear direction, and the first portion of the atmospheric vent pipe and the piping do not overlap when viewed from the vehicle width direction.

[0089] This vehicle structure prevents interference between the atmospheric vent pipe and the piping during a side collision, thus preventing wear and tear.

[0090] (4) The vehicle body structure according to any one of (1) to (3), wherein the piping is a filler tube or leveling tube connecting an inlet into which the additive can be injected to the tank.

[0091] This vehicle body structure is preferable because it increases the flexibility in the layout of leveling pipes and filler pipes, which could affect the water supply of additives if extended or rerouted.

[0092] (5) The vehicle body structure according to any one of (1) to (4), wherein the atmospheric vent pipe extends from the front of the tank to the front of the chamber.

[0093] With this vehicle structure, the atmospheric vent pipe extends from the front of the tank to the front of the chamber, which reduces the distance it has to detour through space and efficiently increases the flexibility of the piping layout.

[0094] Furthermore, the following is disclosed in this specification: <1> A vehicle body structure comprising: a tank for storing an additive for purifying the exhaust gas of a vehicle; an atmospheric vent pipe connected to the tank and having an atmospheric vent hole that can be opened to the atmosphere; and a box portion surrounding the atmospheric vent hole of the atmospheric vent pipe, wherein the box portion has a vent that communicates with the outside, and the vent is directed inward in the vehicle width direction, causing the box portion to communicate with the outside.

[0095] With this vehicle body structure, the atmospheric vent of the atmospheric vent pipe is surrounded by a box-like structure, protecting it from water, mud, and other debris splashed up during vehicle operation. Furthermore, water and mud typically splashed up by the tires, which are located on the outermost edges of the vehicle, tend to fly towards the atmospheric vent from above, below, or the outer edges of the vehicle. Therefore, by positioning the vents of the box-like structure surrounding the atmospheric vent towards the inner edges of the vehicle (where less water and mud are likely to splash), the intrusion of water and mud into the box-like structure can be suppressed. Consequently, the atmospheric vent can be more reliably protected from water and mud.

[0096] <2> The vehicle body structure according to <1>, wherein the atmospheric vent of the atmospheric vent pipe is positioned above the vent of the box portion.

[0097] With this vehicle structure, even if water or mud were to enter through the vents, it would be difficult for it to reach the atmospheric vents.

[0098] <3> The vehicle body structure according to <1> or <2>, wherein the ventilation opening is formed at the lower end of the box portion.

[0099] With this vehicle structure, even if water or mud enters the box section, it will not accumulate inside the box and can be discharged through the ventilation holes.

[0100] <4> The vehicle body structure according to any one of <1> to <3>, comprising a chamber connected to the tank and capable of storing the additive, wherein the box portion is provided directly above the chamber.

[0101] This vehicle structure allows water, mud, and other debris flying in from below the vehicle to be blocked by the chamber, preventing them from entering the box section.

[0102] <5> The box portion is provided at the outer end in the vehicle width direction of the upper surface of the chamber, the vehicle body structure as described in <4>.

[0103] With this vehicle body structure, by positioning the box section at the outer end in the vehicle width direction of the upper surface of the chamber, the distance between the vents communicating with the outside toward the inside in the vehicle width direction and the inner surface of the chamber in the vehicle width direction can be set to be longer. This allows the chamber to prevent water, mud, etc., flying in from below the vehicle, from entering the box section more reliably.

[0104] <6> The box portion has a bottom surface whose inner end in the vehicle width direction communicates with the ventilation opening, and the bottom surface includes a first inclined surface that slopes upward toward the outer side in the vehicle width direction. The vehicle body structure according to any one of <1> to <5>.

[0105] With this vehicle structure, even if water or mud enters through the vents, the first inclined surface on the bottom allows the water or mud to be discharged.

[0106] <7> The vehicle body structure according to <6>, wherein the box portion has a first wall portion that is connected to the outer end in the vehicle width direction of the bottom surface of the box portion and extends inward in the vehicle width direction.

[0107] With this vehicle body structure, even if water or mud were to penetrate along the bottom surface, including the first inclined surface, the first wall section would be able to repel the water or mud.

[0108] <8> The vehicle body structure according to <7>, wherein the inner surface of the box portion in the vehicle width direction has a first protrusion that protrudes from its lower part toward the outer side in the vehicle width direction, and a first gap is formed between the outer end of the first protrusion in the vehicle width direction and the inner end of the first wall portion in the vehicle width direction, connecting the upper and lower regions.

[0109] With this vehicle structure, even if water or mud were to enter through the vents, it could be repelled by the first protrusion and first wall above the vents. In addition, the vents in the box section and the atmospheric vents in the atmospheric vent pipes can be vented to the atmosphere through the first gap.

[0110] <9> The vehicle body structure according to <8>, wherein the box portion has a second wall portion that is connected to the inner end of the first wall portion in the vehicle width direction and extends outward in the vehicle width direction, and the second wall portion includes a second inclined surface that slopes upward as it moves outward in the vehicle width direction.

[0111] With this vehicle structure, even if water were to enter through the vents or the first gap, the water could be discharged by the second inclined surface.

[0112] <10> The vehicle body structure according to <9>, wherein the inner surface of the box portion in the vehicle width direction has a second protrusion that protrudes outward in the vehicle width direction above the inner end of the second inclined surface of the second wall portion in the vehicle width direction, the outer end of the second protrusion in the vehicle width direction and the inner end of the second inclined surface in the vehicle width direction are positioned to overlap when viewed from above and below, and a second gap is formed between the outer end of the second protrusion in the vehicle width direction and the inner end of the second inclined surface in the vehicle width direction, connecting the left and right regions.

[0113] With this vehicle structure, even if water or mud enters through the vents or the first gap, it can be discharged by the second protrusion above the first gap or the second inclined surface of the second wall. In addition, the vents of the box section and the atmospheric vents of the atmospheric vent pipe can be vented to the atmosphere via the first and second gaps. Furthermore, while the first gap connects the upper and lower regions, the second gap connects the left and right regions, so the orientation of the first and second gaps is different, making it difficult for water or mud to enter.

[0114] <11> The vehicle body structure according to <10>, wherein the widthwise dimension of the first protrusion is shorter than the widthwise dimension of the second protrusion.

[0115] This body structure allows the width dimension of the first protrusion to be shorter than that of the second protrusion, ensuring effective mud removal.

[0116] <12> The vehicle body structure according to <10> or <11>, wherein the atmospheric vent hole of the atmospheric vent pipe is located above the second protrusion.

[0117] According to this vehicle body structure, the atmospheric vent of the atmospheric vent pipe is located above the first wall section, the second wall section, the first protrusion, the second protrusion, etc., so the possibility of water, mud, etc. entering the atmospheric vent is extremely low.

[0118] <13> The vehicle body structure according to any one of <9> to <12>, wherein the angle of inclination of the first inclined surface on the bottom surface of the box portion is greater than the angle of inclination of the second inclined surface on the second wall portion.

[0119] This vehicle structure allows for a larger inclination angle of the first inclined surface into which mud can enter, thereby ensuring more reliable mud removal by the first inclined surface.

[0120] <14> The vehicle body structure according to any one of <1> to <13>, wherein the atmospheric vent of the atmospheric vent pipe opens outward in the vehicle width direction within the box portion.

[0121] With this vehicle body structure, the ventilation openings in the box section open inward in the vehicle width direction, while the atmospheric vent holes in the atmospheric vent pipe open outward in the vehicle width direction. Therefore, even if water or mud enters through the ventilation openings in the box section, it is difficult for the water or mud to reach the atmospheric vent holes in the atmospheric vent pipe.

[0122] Although various embodiments have been described above with reference to the drawings, it goes without saying that the present invention is not limited to these examples. It is clear to those skilled in the art that various modifications or alterations can be conceived within the scope of the claims, and these will naturally also fall within the technical scope of the present invention. Furthermore, the components of the above embodiments may be combined in any way without departing from the spirit of the invention.

[0123] This application is based on Japanese Patent Application No. 2024-208940 filed on November 29, 2024, and its contents are incorporated herein by reference.

[0124] 1. Body structure 2. Side member 3. Rear cross member 4. Front cross member 5. Tank 6. Rear wheel 7. Supply port 8. Cap 9. SCR system 10. Chamber 10A. Upper part 10B. Lower part 11. Holding part 13. Front and rear extension part 15. Protruding part 20. Atmospheric vent pipe 20A. First part 20B. Second part 21. Atmospheric vent hole 23. Insect-proof cap 23a. Opening 30. Leveling pipe (piping) 30A. First leveling pipe 30B. Second leveling pipe 40. Filler pipe (piping) 40A. First filler pipe 40B. Second filler pipe 40C. Third filler pipe 51. Additive pump 52. Additive piping 53. Additive injector 54. Atmospheric vent valve 60. Box section 61. Vent 71. Side outer wall 71a Outer wall 71b Inner wall 71c Front wall 71d Rear wall 80 Box body 81 Bottom surface (first inclined surface) 81a Inner end in the vehicle width direction 83 First wall section 83a Outer wall 83b Top wall 85 Second wall section 85a Inner wall 85b Inclined wall (second inclined surface) 85c Inner end in the vehicle width direction 85d Outer end in the vehicle width direction 90 Cover (inner side surface of the box section in the vehicle width direction) 91 Flat plate section 93 First protrusion 95 Second protrusion S Space T1 First discharge area T2 Second discharge area T3 Third discharge area U1 First gap U2 Second gap

Claims

1. A vehicle body structure comprising: a tank for storing an additive for purifying the exhaust gas of a vehicle; an atmospheric vent pipe connected to the tank and having an atmospheric vent hole that can be opened to the atmosphere; a chamber connected to the tank and capable of storing the additive; and a side member extending in the longitudinal direction of the vehicle, wherein the atmospheric vent hole is located directly above the chamber, and the side member is located below the chamber such that at least a portion of it overlaps with the chamber when viewed from above.

2. The vehicle body structure according to claim 1, wherein at least a portion of the side member is positioned outward in the vehicle width direction compared to the chamber.

3. The vehicle body structure according to claim 1 or 2, wherein the atmospheric vent is located further inward in the vehicle width direction than the side member.

4. The vehicle body structure according to any one of claims 1 to 3, wherein the chamber comprises a box portion surrounding the atmospheric vent of the atmospheric vent pipe, the box portion has a vent that communicates with the outside, and the vent is directed inward in the vehicle width direction, causing the box portion to communicate with the outside.

5. The vehicle body structure according to claim 4, wherein the box portion of the chamber is positioned further inward in the vehicle width direction than the side member.

6. The vehicle body structure according to claim 4 or 5, wherein the box portion of the chamber is positioned above the side member.

7. A vehicle body structure according to any one of claims 1 to 6, comprising piping routed in the space between the tank and the chamber, wherein the atmospheric vent has a first portion located below the space and a second portion located to the side of the space, and is routed to bypass the space.

8. A vehicle body structure according to any one of claims 1 to 7, comprising a box portion surrounding the atmospheric vent hole of the atmospheric vent pipe, wherein the box portion has a vent that communicates with the outside, and the vent is open toward the inside in the vehicle width direction.

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