Vehicle front structure

Abstract

To inhibit front side members from deforming to bend downward when a vehicle undergoes a head-on collision, and prevent a high-voltage component, which is disposed below a floor of a cabin, from being impaired.SOLUTION: A vehicle front structure 10 includes front side members 1 that are disposed on respective sides in a vehicle width direction of a front part of a vehicle, extend in a fore-and-aft direction, and support a floor 2 of a cabin, and a high-voltage component 3 disposed below the floor 2. Further, the vehicle front structure includes support members 4 whose rear ends 4c are coupled to the front side members 1 respectively and which extend obliquely forward and downward from the respective front side members 1.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle front structure including front side members extending in the front-rear direction on both sides in the vehicle width direction. [Background technology]

[0002] Patent Document 1 discloses a vehicle front structure that includes front side members extending in the front-rear direction on both sides in the vehicle width direction. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-306171 A Summary of the Invention [Problem to be solved by the invention]

[0004] When high-voltage components such as an electric motor for driving are located below the cabin floor, if the gap between the cabin floor and the high-voltage components is narrow, the front side member may bend downward in the event of a frontal collision, causing the cabin floor supported by the front side member to come into contact with the high-voltage components and damage them.

[0005] Therefore, an object of the present invention is to suppress deformation of the front side member so as to bend downward when the vehicle undergoes a frontal collision, thereby preventing damage to high-voltage components arranged below the cabin floor. [Means for solving the problem]

[0006] The vehicle front structure of the present invention is a vehicle front structure comprising front side members arranged on both sides of the front of the vehicle in the vehicle width direction, extending in the fore-and-aft direction and supporting a cabin floor, and high-voltage components arranged below the floor, and is characterized in that it comprises a support member whose rear end is connected to the front side member and extends diagonally forward and downward from the front side member.

[0007] When the vehicle undergoes a frontal collision, the present invention transmits an upward load from the support member to the front side member, thereby suppressing deformation of the front side member so as to bend downward, and preventing damage to high-voltage components due to contact with the cabin floor.

[0008] Vehicle front structure according to the present invention teeth, The front end of the support member is disposed forward of the front end of the front side member. Therefore, when the vehicle undergoes a frontal collision, a load is applied from the front to the support member before a load is applied from the front to the front side member, and a load is applied from the support member in a direction that bends the front side member upward. Effect of the Invention

[0009] The present invention suppresses downward bending deformation of the front side member when the vehicle undergoes a frontal collision, thereby preventing damage to high-voltage components located below the cabin floor. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a side view of a vehicle front structure according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is a front view of the vehicle front structure of the present embodiment as viewed from the front. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, a vehicle front structure 10 of this embodiment will be described with reference to Figures 1 and 2. The arrows FR, UP, and RH shown in Figures 1 and 2 indicate the front direction (traveling direction), upward, and rightward directions of the vehicle, respectively. The opposite directions of the arrows FR, UP, and RH indicate the rearward direction, downward, and leftward directions of the vehicle, respectively. Hereinafter, when the directions of front-rear, left-right, and up-down are simply used in the description, they refer to front-rear in the front-rear direction of the vehicle, left-right in the left-right direction of the vehicle (vehicle width direction), and up-down in the up-down direction of the vehicle, unless otherwise specified.

[0012] Fig. 1 is a side view of a vehicle front structure 10, and Fig. 2 is a front view of the vehicle front structure 10. As shown in Figs. 1 and 2, the vehicle front structure 10 includes front side members 1 extending in the fore-and-aft direction on both sides in the vehicle width direction as framework members for the front part of the vehicle. The front side members 1 have horizontal parts 1b extending rearward from a front end 1a, and inclined parts 1c extending obliquely rearward and downward from the rear end of the horizontal parts 1b. The front side members 1 are connected to a cabin floor 2, and support the floor 2 from below on both sides in the vehicle width direction.

[0013] The vehicle front structure 10 includes a high-voltage component 3 disposed below a floor 2. The high-voltage component 3 is composed of a driving electric motor and circuits such as an inverter. As shown in Fig. 2, a gap G having an extremely narrow vertical width is provided between the floor 2 and the upper end of the high-voltage component 3.

[0014] The vehicle front structure 10 includes a support member 4 as a framework member that supports the front side member 1 from below. The support member 4 is joined to the center in the front-to-rear direction of the horizontal portion 1b of the front side member 1, and extends obliquely forward and downward from the joining position. As shown in FIG. 1, the support member 4 is composed of a front end portion 4a, a middle portion 4b, and a rear end portion 4c, and the rear end portion 4c is joined to the horizontal portion 1b of the front side member 1.

[0015] A front end 4d of a front end portion 4a of the support member 4 is disposed forward of a front end 1a of the front side member 1. Therefore, when a frontal collision of the vehicle occurs, a load is applied from the front to the support member 4 as shown by an arrow A1 in FIG. 1 before a load is applied from the front to the front side member 1. Then, the load is transmitted as shown by an arrow A2 in FIG. 1, and a load is applied in a direction that bends the front side member 1 upward as shown by an arrow A3 in FIG. 1. Therefore, in the vehicle front structure 10, even if the front side member 1 deforms due to a frontal collision of the vehicle, the front side member 1 always deforms so as to bend upward, and it is possible to prevent the front side member 1 from deforming so as to bend downward. And because the front side member 1 can be prevented from deforming so as to bend downward in this manner, the vehicle front structure 10 suppresses the floor 2 supported by the front side member 1 from deforming so as to bend downward in side view when the vehicle undergoes a frontal collision, thereby preventing the floor 2 from coming into contact with the high-voltage components 3 and damaging the high-voltage components 3.

[0016] Furthermore, since the vehicle front structure 10 has the effect of preventing the front side member 1 from deforming so as to bend downward simply by adding the support member 4 to the vehicle front structure of the prior art, increases in mass and costs can be minimized compared to methods of suppressing bending of the front side member 1 by increasing the strength of the front side member 1 through increasing the plate thickness or changing the material.

[0017] <Supplementary explanation of the embodiment> The vehicle front structure of the present disclosure is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the gist of the present disclosure. For example, the high-voltage components disposed under the floor are not limited to the electric motor for driving, the inverter, etc., but may be other components such as an air conditioning compressor or a heater. [Explanation of symbols]

[0018] 1 front side member, 1a front end, 1b horizontal portion, 1c inclined portion, 2 floor, 3 high voltage parts, 4 support member, 4a front end portion, 4b middle portion, 4c rear end portion, 4d front end portion, 10 vehicle front structure.

Claims

[Claim 1] front side members that are disposed on both sides of a front portion of the vehicle in a vehicle width direction and extend in a front-rear direction to support a cabin floor; A vehicle front structure comprising: a support member having a rear end connected to the front side member and extending obliquely forward and downward from the front side member; A vehicle front structure characterized in that a front end of the support member is positioned forward of a front end of the front side member, so that when the vehicle undergoes a frontal collision, a load is applied from the front to the support member before a load is applied from the front to the front side member, and a load is applied from the support member in a direction that bends the front side member upward.

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