Vehicle body structure

Abstract

To provide a vehicle body structure which can prevent deformation or damage of a battery pack during vehicle rear collision without narrowing the cargo chamber space of the vehicle.SOLUTION: A vehicle body structure 100 comprises a floor panel 110 of a vehicle, a back panel 120 which forms a rear surface of the vehicle, a battery pack 130 disposed on a floor panel 110 in a cargo chamber at a rear part of the vehicle, spaced forward from the back panel 120 by a prescribed interval, and a tool box 140 mounted between the back panel 120 and the battery pack 130.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] For example, Patent Document 1 discloses a configuration including a battery pack storage container section in which a battery pack is stored, and a first upper reinforcing member that extends between battery stacks along the front-rear direction of the vehicle and has a front end and a rear end connected to the battery pack storage container section. Patent Document 1 also discloses a configuration in which a first weak part is formed in a lower part of the middle part of the first upper reinforcing member. Patent Document 1 describes that in the event of a collision accident or the like, the first upper reinforcing member can withstand the impact. Patent Document 1 also describes that the first upper reinforcing member is curved upwardly to be convex due to the presence of the first weak part, thereby preventing the battery pack from being damaged. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-108099 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, as described in Patent Document 1, providing a new member, that is, a first upper reinforcing member, inside the battery pack storage container increases the size of the battery pack storage container, thereby narrowing the luggage compartment space of the vehicle.

[0005] In view of the above problems, the present invention has an object to provide a vehicle body structure that can prevent deformation or damage to a battery pack during a rear-end collision of the vehicle without narrowing the luggage compartment space of the vehicle. [Means for solving the problem]

[0006] In order to solve the above problems, a representative configuration of a vehicle body structure according to the present invention is characterized by comprising a vehicle floor panel, a back panel forming the rear of the vehicle, a battery pack arranged on the floor panel in a luggage compartment at the rear of the vehicle with a predetermined distance forward of the vehicle from the back panel, and a tool box mounted between the back panel and the battery pack.

[0007] Another representative configuration of the vehicle body structure according to the present invention is characterized in that it comprises a floor panel of the vehicle, a downwardly recessed concave portion formed in the floor panel, and a battery pack disposed on the floor panel in the luggage compartment at the rear of the vehicle, a portion of which covers an upper portion of the concave portion. Effect of the Invention

[0008] According to the present invention, it is possible to prevent deformation or damage to a battery pack during a vehicle rear collision without narrowing the luggage compartment space of the vehicle. [Brief description of the drawings]

[0009] [Figure 1] 1 is a perspective view of a vehicle body structure according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a cross-sectional view of the vehicle body structure of FIG. [Diagram 3] FIG. 2 is a perspective view of the vehicle body structure of FIG. 1 with a back panel and a tool box removed. [Figure 4] FIG. 2 is a rear view of the vehicle body structure of FIG. 1 with a back panel and a tool box removed. [Diagram 5] FIG. 2 is a plan view of the vehicle body structure of FIG. 1 with a tool box removed. [Figure 6] FIG. 2 is an exploded perspective view of a tool box provided in the vehicle body structure of FIG. 1. [Figure 7] FIG. 2 is a rear view of the vehicle body structure of FIG. 1 with a back panel removed. [Figure 8] 2 is a plan view of an upper box provided in the vehicle body structure of FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] One embodiment of a vehicle body structure according to the present invention is characterized by comprising a vehicle floor panel, a back panel forming the rear of the vehicle, a battery pack arranged on the floor panel in a luggage compartment at the rear of the vehicle a predetermined distance forward of the vehicle from the back panel, and a tool box mounted between the back panel and the battery pack.

[0011] According to the present invention, since the tool box is mounted between the back panel and the battery pack, when the vehicle is hit from behind, a load is applied to the tool box, causing the tool box to deform. This deformation causes the tool box to act as a buffer to absorb the impact on the battery pack. As a result, it is possible to prevent the battery pack from being deformed or damaged during a vehicle collision without narrowing the luggage compartment space of the vehicle.

[0012] Another embodiment of a vehicle body structure according to the present invention is characterized in that it comprises a floor panel of a vehicle, a downwardly recessed concave portion formed in the floor panel, and a battery pack disposed on the floor panel in a luggage compartment at the rear of the vehicle, a portion of which covers an upper portion of the concave portion.

[0013] According to the above configuration, a part of the battery pack is disposed so as to cover the upper part of the concave portion, so that the hollow concave portion is disposed below the battery pack. Therefore, when the vehicle is rear-ended and the concave portion receives an impact from below, the concave portion deforms upward to absorb the impact. As a result, it is possible to prevent deformation or damage of the battery pack without narrowing the luggage compartment space of the vehicle.

[0014] The above-mentioned vehicle body structure further includes a downwardly recessed concave portion formed in the floor panel, the battery pack covering an upper part of a front area of ​​the concave portion, and the toolbox having a lower box located in a rear area behind the front area of ​​the concave portion and an upper box placed on the lower box and located to the rear of the battery pack, and the lower box is preferably heavier than the upper box.

[0015] According to the above configuration, even if the lower box of the tool box is swung forward of the vehicle during a rear-end collision, the lower box moves to the space in the front area of ​​the recessed portion located in front of the lower box. In other words, the battery pack is not subjected to impact from the lower box, which is heavy, and is therefore not deformed or damaged.

[0016] The above-mentioned tool box may further have a through-hole in the upper box that passes through from the upper box to the lower box and allows the tools contained in the lower box to be viewed from above.

[0017] According to this configuration, the user can easily check the tools stored in the lower box by looking through the through hole of the upper box without removing the upper box from the lower box, which improves user convenience. EXAMPLES

[0018] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific values ​​shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same functions and configurations are given the same reference numerals to avoid repeated explanations, and elements not directly related to the present invention are not shown.

[0019] Fig. 1 is a perspective view of a vehicle body structure 100 according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of the vehicle body structure 100 of Fig. 1. In Fig. 1 and all other drawings, the front-rear direction of the vehicle is indicated by arrows F (Forward) and B (Backward), the left and right in the vehicle width direction are indicated by arrows L (Leftward) and R (Rightward), and the up-down direction is indicated by arrows U (Upward) and D (Downward).

[0020] As shown in Figures 1 and 2, a vehicle body structure 100 includes a vehicle floor panel 110. The floor panel 110 is a panel used as a floor in a luggage compartment at the rear of the vehicle. A back panel 120 (described later) is attached to the rear end of the floor panel 110. A battery pack 130 and a tool box 140 (described later) are also disposed on the floor panel 110.

[0021] FIG. 3 is a perspective view of the vehicle body structure 100 of FIG. 1 with the back panel 120 and the tool box 140 removed. FIG. 4 is a rear view of the vehicle body structure 100 of FIG. 1 with the back panel 120 and the tool box 140 removed. As shown in FIG. 3 and FIG. 4, the floor panel 110 has a floor portion 111 and a concave portion 112. The floor portion 111 extends over an area 111a on the left side in the vehicle width direction, an area 111b on the right side in the vehicle width direction, and an area 111c on the vehicle front side (see FIG. 2). The concave portion 112 is concave downward with respect to the floor portion 111 inside the areas 111a, 111b, and 111c. The concave portion 112 is concave in a cylindrical shape capable of storing a tire. The battery pack 130 is directly disposed on the above-mentioned areas 111a, 111b, and 111.

[0022] As shown in Figs. 1 and 2, the vehicle body structure 100 includes a back panel 120. The back panel 120 is a panel that extends in the vehicle width direction and is used in the lower part of the rear wall of the vehicle to form a part of the rear surface of the vehicle. As shown in Fig. 2, the back panel 120 covers the recessed portion 112 from the rear. The upper edge of the back panel 120 is higher than the floor portion 111. The back panel 120 is located below an opening for a back door (not shown) of the vehicle.

[0023] As shown in Fig. 1 and Fig. 2, the vehicle body structure 100 includes a battery pack 130. As shown in Fig. 2, the battery pack 130 is disposed at a predetermined distance from the back panel 120 toward the front of the vehicle. The battery pack 130 is fixed to a floor portion 111 of a floor panel 110 by a fixing mechanism 135 in a luggage compartment at the rear of the vehicle. As shown in Fig. 2, a front end of the battery pack 130 in the front-rear direction of the vehicle is fixed to a region 111c on the front side of the vehicle. Also, as shown in Fig. 3 and Fig. 4, both ends of the battery pack 130 in the vehicle width direction are fixed to span between a region 111a on the left side in the vehicle width direction and a region 111b on the right side in the vehicle width direction.

[0024] The battery pack 130 covers an upper portion of the front region 112a of the recessed portion 112. Therefore, as shown in FIG.

[0025] 1 and 2, the vehicle body structure 100 includes a tool box 140. The tool box 140 is made of, for example, resin, foam, or the like. In this embodiment, the tool box 140 is made of polystyrene foam. Here, the area in which the tool box 140 is arranged will be described with reference to FIG. 5.

[0026] Fig. 5 is a plan view of the vehicle body structure 100 of Fig. 1 with the tool box 140 removed. The area between the battery pack 130 and the back panel 120 shown in Fig. 5 is called the rear area 112b. The rear area 112b is an area behind the front area 112a (see Fig. 2). Areas 111a and 111b of the floor portion 111 and the recessed portion 112 are located in this rear area 112b. The tool box 140 is placed on this rear area 112b.

[0027] Fig. 6 is an exploded perspective view of the tool box 140 provided in the vehicle body structure 100 of Fig. 1. The tool box 140 has a lower box 141 and an upper box 142.

[0028] The lower box 141 shown in FIG. 6 is placed in the rear area 112b. The lower box 141 has a first storage section 141a capable of storing tools, a second storage section 141b capable of storing tools, and a support section 141c. The first storage section 141a forms a recess. The first storage section 141a stores a triangular display plate 151 and a compressor 152. Similarly, the second storage section 141b forms a recess. The second storage section 141b stores a sealer 153. A protrusion 141b1 is formed on the second storage section 141b on the right side in the vehicle width direction and on the vehicle rear side.

[0029] The support portion 141c is a portion that supports the upper box 142. A protrusion 141c1 is formed on the support portion 141c on the left side in the vehicle width direction and on the vehicle front side. A first stepped edge 141d is formed on the upper edge of the lower box 141, which is recessed downward from the upper edge of the second storage portion 141b and the upper edge of the support portion 141c in rear view. In addition, a second stepped edge 141e is formed by further recessing downward from a portion of the first stepped edge 141d.

[0030] Fig. 7 is a rear view of the vehicle body structure 100 of Fig. 1 with the back panel 120 removed. As shown in Fig. 7, the support portion 141c is placed in the area 111a. The first storage portion 141a is placed in the recessed portion 112. The second storage portion 141b is placed in the area 111b. The upper edge of the lower box 141 is disposed at a height higher than the upper edge of the recessed portion 112, except for the bottom of the second step edge 141e.

[0031] The upper box 142 shown in FIG. 6 is placed on the lower box 141 as shown in FIG. 7. The upper box 142 is located on the rear side of the battery pack 130. As shown in FIG. 6, the upper box 142 has a first groove 142a, a second groove 142b, and a third groove 142c capable of storing tools. A jack handle 154 is stored in the first groove 142a. An eyebolt 155 is stored in the second groove 142b. A wrench 156 is stored in the third groove 142c.

[0032] A recess 142e is formed on the bottom of the upper box 142 on the right side in the vehicle width direction and on the rear side of the vehicle, and a recess 142f is formed on the left side in the vehicle width direction and on the front side of the vehicle. Therefore, when the upper box 142 is stacked on the lower box 141, the protrusion 141b1 of the lower box 141 engages with the recess 142e of the upper box 142, and the protrusion 141c1 of the lower box 141 engages with the recess 142f of the upper box 142.

[0033] A stepped bottom 142d that protrudes downward in rear view is formed on the lower edge of the upper box 142. The stepped bottom 142d on the lower edge of the upper box 142 is fitted into a first stepped edge 141d on the upper edge of the lower box 141. In addition, when the upper box 142 is fitted into the lower box 141, the stepped bottom 142d on the lower edge of the upper box 142 forms an opening T (see FIG. 7) together with a second stepped edge 141e on the upper edge of the lower box 141. The second stepped edge 141e is shaped to grip the triangular display plate 151 when lifting it up.

[0034] The lower box 141 is heavier than the upper box 142. For example, the weight of the warning triangle 151, the compressor 152, and the sealer 153 is greater than the weight of the jack handle 154, the eyebolt 155, and the wrench 156. The heavier tools are stored in the lower box.

[0035] Fig. 8 is a plan view of the upper box 142 provided in the vehicle body structure 100 of Fig. 1. Fig. 8(a) is a plan view of the upper box 142 when no tool is inserted. Fig. 8(b) is a plan view of the upper box 142 when a tool is inserted. As shown in Fig. 8(a), the upper box 142 has a through hole 142c1. This through hole 142c1 penetrates from the upper box 142 to the lower box 141.

[0036] As shown in FIG. 8(b), when a user looks into the through hole 142c1 of the third groove 142c for the wrench 156 of the upper box 142, the user can see the tools (e.g., sealer 153) stored in the second storage section 141b of the lower box 141 from above.

[0037] Next, the action occurring to the battery pack 130 and its surroundings when the vehicle is rear-ended will be described with reference to Fig. 2. When the vehicle is rear-ended, the back panel 120 pushes the tool box 140 toward the front of the vehicle. The upper box 142 of the tool box 140 is pushed toward the battery pack 130. The upper box 142 absorbs the impact of the rear-end collision. As a result, the battery pack 130 is protected.

[0038] Also, the lower box 141 is pushed toward the space S between the battery pack 130 and the recessed portion 112. The lower box 141 absorbs the impact load of the rear collision. If the impact load is too strong, the tool box 140 enters the space S between the battery pack 130 and the recessed portion 112 from the lower box 141 side. This prevents the battery pack 130 from being directly hit by the impact of the rear collision, and the battery pack 130 is further protected.

[0039] According to the configuration of this embodiment, since the tool box 140 is mounted between the back panel 120 and the battery pack 130, when the vehicle is hit from behind, a load is applied to the tool box 140, causing the tool box 140 to deform. This deformation causes the tool box 140 to function as a buffer material and absorb the impact received by the battery pack 130. As a result, by utilizing items in the trunk of the vehicle (including items that are likely to be in the trunk of the vehicle), it is possible to prevent the battery pack 130 from being deformed or damaged in the event of a vehicle collision from occurring without narrowing the trunk space of the vehicle.

[0040] Furthermore, because a portion of battery pack 130 is disposed so as to cover the upper side of concave portion 112, concave portion 112, which is a cavity, is disposed below battery pack 130. Therefore, when the vehicle is rear-ended and concave portion 112 receives an impact from below, concave portion 112 cushions the impact while deforming upward. As a result, it is possible to prevent deformation or damage to battery pack 130 without narrowing the space in the trunk of the vehicle by utilizing items in the trunk of the vehicle (including items that are likely to be in the trunk of the vehicle).

[0041] Even if the lower box 141 of the tool box 140 is swung forward of the vehicle during a rear-end collision, the lower box 141 moves to the space in the front region 112a of the recessed portion 112 located in front of the lower box 141. That is, the battery pack 130 is not subjected to impact from the lower box 141 of the tool box 140, which is heavy, and is therefore not deformed or damaged.

[0042] In addition, the user can easily check the tools stored in the lower box 141 by looking through the through-hole 142c1 of the upper box 142 without removing the upper box 142 from the lower box 141. As a result, user convenience is improved.

[0043] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to the above-described embodiment. It is clear that a person skilled in the art can think of various modifications or alterations within the scope of the claims, and it is understood that these also naturally belong to the technical scope of the present invention.

[0044] Furthermore, the present invention can be implemented by freely combining the inventions described in the claims and examples, regardless of the dependent relationships of the claims. [Industrial Applicability]

[0045] The present invention can be used in a vehicle battery fixing structure. [Explanation of symbols]

[0046] 100...vehicle body structure, 110...floor panel, 111...floor portion, 111a...area, 111b...area, 111c...area, 112...concave portion, 112a...front area, 112b...rear area, 120...back panel, 130...battery pack, 135...fixing mechanism, 140...tool box, 141...lower box, 141a...first storage section, 141b...second storage section, 141b1...protrusion , 141c...support portion, 141c1...projection, 141d...first step edge, 141e...second step edge, 142...upper box, 142a...first groove, 142b...second groove, 142c...third groove, 142c1...through hole, 142d...step bottom, 151...triangular indicator, 152...compressor, 153...sealer, 154...jack handle, 155...eyebolt, 156...wrench, S...space, T...opening

Claims

1. A floor panel of a vehicle; A back panel forming a rear surface of the vehicle; a battery pack disposed on the floor panel in a luggage compartment at the rear of the vehicle at a predetermined distance forward from the back panel; a tool box mounted between the back panel and the battery pack; A vehicle body structure comprising:

2. A floor panel of a vehicle; A downwardly recessed portion formed in the floor panel; a battery pack that is disposed on the floor panel in a luggage compartment at a rear part of the vehicle and that partially covers an upper portion of the concave portion; A vehicle body structure comprising:

3. The vehicle body structure further includes a recessed portion formed in the floor panel, the recessed portion being recessed downward, the battery pack covers an upper portion of a front region of the recessed portion, the tool box includes a lower box located in a rear area behind the front area of ​​the recessed portion, and an upper box placed on the lower box and located behind the battery pack, 2. The vehicle body structure according to claim 1, wherein the lower box is heavier than the upper box.

4. 4. The vehicle body structure according to claim 3, wherein the tool box further includes a through hole in the upper box that passes from the upper box to the lower box and allows the tools stored in the lower box to be viewed from above.

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