Vehicle lower structure

Abstract

To reduce the number of man-hours required to close multiple holes in a floor panel in a vehicle lower structure in which a battery is disposed below the floor panel.SOLUTION: A vehicle lower structure 10 comprises: a floor panel 20; and a battery 40 arranged on an underside side of the floor panel 20. The floor panel 20 has multiple holes 22. The vehicle lower structure 10 further includes an insulating material 50 fixed to an upper surface of the battery 40. The insulating material 50 interferes with the multiple holes 22 in the floor panel 20.SELECTED DRAWING: Figure 1

Description

Technical Field

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

Background Art

[0002] A vehicle underbody structure in which a battery is disposed below a floor panel is known (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the floor panel has reference holes for assembling each sheet metal part and holes for electrodeposition painting. These holes are unnecessary in the completed vehicle state and need to be closed from the viewpoints of preventing intrusion of water, air, sound, etc. Therefore, packing and seals are attached in the manufacturing process. However, the assembly man-hours are required for the number of holes.

[0005] An object of the present invention is to reduce the man-hours for closing a plurality of holes of a floor panel in a vehicle underbody structure in which a battery is disposed below the floor panel.

Means for Solving the Problems

[0006] The vehicle underbody structure according to claim 1 includes a floor panel that constitutes a lower part of the vehicle body and has a plurality of holes, a battery disposed below the floor panel of the vehicle, and a heat insulating material fixed to an upper surface of the battery and interfering with the plurality of holes.

[0007] In the invention according to claim 1, the vehicle underbody structure includes a floor panel that constitutes the lower part of the vehicle body and a battery disposed on the lower side of the vehicle of the floor panel. Here, the floor panel has a plurality of holes. These plurality of holes are preferably blocked from the viewpoints of preventing intrusion of water, air, sound, etc.

[0008] Therefore, in the invention according to claim 1, the vehicle underbody structure further includes a heat insulating material fixed to the upper surface of the battery. And the heat insulating material interferes with the plurality of holes of the floor panel. For this reason, by mounting the battery with the heat insulating material fixed to the upper surface on the vehicle body, the plurality of holes of the floor panel can be blocked. Thus, the man-hours for the work of blocking the plurality of holes can be reduced. Also, since the member for blocking the plurality of holes serves as the heat insulating material, the number of parts can be reduced.

Effects of the Invention

[0009] As described above, according to the present invention, in the vehicle underbody structure in which the battery is disposed on the lower side of the floor panel, the man-hours for blocking the plurality of holes of the floor panel can be reduced.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0011] Hereinafter, embodiments of the vehicle underbody structure according to the present invention will be described with reference to FIGS. 1 to 3.

[0012] Note that the arrow FR appropriately shown in each figure indicates the front of the vehicle, the arrow UP indicates the upper side of the vehicle, and the arrow RH indicates the right side in the vehicle width direction. In addition, when the front-back, up-down, and left-right directions are used without special mention in the following description, they indicate the front-back in the vehicle front-back direction, the up-down in the vehicle up-down direction, and the left-right in the vehicle width direction.

[0013] Figure 1(A) is a schematic diagram showing the state before mounting the battery pack assembly 30 on the vehicle body, and Figure 1(B) is a schematic diagram showing the state after mounting the battery pack assembly 30 on the vehicle body.

[0014] The vehicle lower structure 10 includes a floor panel 20 that constitutes the lower part of the vehicle body, and a battery pack assembly 30 disposed on the lower side of the floor panel 20. The battery pack assembly 30 includes a battery pack 40 as a "battery" and a heat insulating material 50 fixed to the upper surface of the battery pack 40. Hereinafter, the battery pack 40 may be referred to as the battery 40.

[0015] The floor panel 20 has a plurality of holes 22. The plurality of holes 22 are, for example, reference holes for assembling each sheet metal part and holes for electrodeposition coating.

[0016] The battery pack 40 is disposed on the lower side of the floor panel 20. The battery pack 40 is composed of, for example, a case and a plurality of battery modules housed in the case.

[0017] The heat insulating material 50 is fixed to the upper surface of the battery pack 40 from the stage before disposing the battery pack 40 on the lower side of the floor panel 20. Therefore, by disposing (mounting) the battery pack 40 (battery pack assembly 30) with the heat insulating material 50 fixed to the upper surface on the lower side of the floor panel 20, the heat insulating material 50 can be made to interfere with the plurality of holes 22 of the floor panel 20. Thereby, the plurality of holes 22 of the floor panel 20 can be blocked all at once.

[0018] The heat insulating material 50 may also function as a water stop material, a sound absorbing material, or a sound insulating material. The method of fixing the heat insulating material 50 to the battery pack 40 is not particularly limited, but for example, it is a double-sided tape. The heat insulating material 50 is preferably made of a material that can be easily fixed to the battery pack 40 with a double-sided tape or the like.

[0019] The battery pack 40 has a mounting portion 44 that protrudes in the horizontal direction of the vehicle from the battery body 42. The battery pack 40 is mounted on the vehicle body via the mounting portion 44. The battery pack 40 is mounted on the vehicle body by mechanical fastening such as bolts. The mounting portion 44 protrudes from the battery body 42 to the front side and the rear side of the vehicle, for example.

[0020] FIG. 2 is a diagram showing the interference state between the hole 22 of the floor panel 20 and the heat insulating material 50.

[0021] FIG. 2(A) shows a state in which the heat insulating material 50 having a flat shape is interfered with the hole 22 of the floor panel 20. The entire upper surface of this heat insulating material 50 is a flat surface. When the heat insulating material 50 is sandwiched between the battery pack 40 and the floor panel 20 in the vertical direction, the heat insulating material 50 is in a state of being compressed in the vertical direction. Therefore, a plurality of holes 22 can be surely blocked. At this time, convex portions 52 are formed at portions of the upper surface of the heat insulating material 50 corresponding to the holes 22. The convex portions 52 enter the inside of the holes 22.

[0022] FIG. 2(B) shows an example in which convex-shaped portions 54 are formed in advance at positions corresponding to the plurality of holes 22 of the floor panel 20 in the heat insulating material 50. Since the convex-shaped portions 54 are formed in advance on the upper surface of the heat insulating material 50, it becomes easy to manage the dimensions for interfering with the holes 22, and the holes 22 can be blocked more surely. In FIG. 2(B), the convex-shaped portions 54 in the state before interfering with the holes 22 are depicted. The convex-shaped portions 54 are, for example, hemispherical convex portions. From the viewpoint of cost, it is preferable that the convex-shaped portions 54 are integrally formed with portions of the heat insulating material 50 other than the convex-shaped portions 54. However, they may be separate bodies.

[0023] FIG. 2(C) shows an example in which a plurality of holes 22 in the floor panel 20 are contrived. Specifically, the plurality of holes 22 are formed by burring and have a burring shape. That is, the edges of the holes 22 stand up on the lower side of the vehicle. Therefore, even considering the variation in the vertical dimension of the heat insulating material 50, the plurality of holes 22 can be surely blocked by the heat insulating material 50.

[0024] FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 1(A).

[0025] As shown in FIG. 3, the battery pack assembly 30 may include intervening members 60 such as cooling pipes and wirings sandwiched between the battery pack 40 and the heat insulating material 50. By sandwiching the intervening members 60 between the battery pack 40 and the heat insulating material 50 to form the battery pack assembly 30, the man-hours for assembling each component to the vehicle body can be reduced, and mounting brackets, bolts, etc. can also be reduced.

[0026] Note that the heat insulating material 50 is preferably made of a material that conforms to the shape of the intervening member 60 and the shape of the floor panel 20, and is, for example, a soft material such as ethylene propylene diene rubber or urethane.

[0027] <Operational Effects> Next, the operational effects of the present embodiment will be described.

[0028] In the present embodiment, as shown in FIG. 1, the vehicle lower structure 10 includes a floor panel 20 that constitutes the lower part of the vehicle body, and a battery 40 disposed on the lower side of the vehicle of the floor panel 20. Here, the floor panel 20 has a plurality of holes 22. These plurality of holes 22 are preferably blocked from the viewpoints of preventing intrusion of water, air, sound, etc. Therefore, in the present embodiment, the vehicle lower structure 10 further includes a heat insulating material 50 fixed to the upper surface of the battery 40. And the heat insulating material 50 interferes with the plurality of holes 22 of the floor panel 20. Therefore, by mounting the battery 40 with the heat insulating material 50 fixed to the upper surface on the vehicle body, a plurality of holes 22 in the floor panel 20 can be blocked all at once. Thus, the man-hours required for the work of blocking the plurality of holes 22 can be reduced. Further, since the member for blocking the plurality of holes 22 also serves as a heat insulating material, the number of parts can also be reduced.

Description of Reference Numerals

[0029] 10 Vehicle underbody structure 20 Floor panel 22 Hole 40 Battery pack (battery) 50 Heat insulating material

Claims

【Claim 1】 A floor panel that forms the lower part of the vehicle body and has a plurality of holes; A battery disposed on the lower side of the vehicle of the floor panel; A heat insulating material fixed to the upper surface of the battery and interfering with the plurality of holes; A vehicle lower structure comprising the above.

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