Electric vehicle

Abstract

To provide an electric vehicle that can suppress the occurrence of flexure or loosening on a bolt fixedly fastening a guard member.SOLUTION: An electric vehicle includes: a non-contact charging unit attached to the lower side of a floor panel and receiving power supply from a power supply unit disposed on the ground in a non-contact manner; and a guard member adjacently disposed on the lower side of the floor panel and in front of the non-contact charging unit in a vehicle longitudinal direction. The guard member is disposed by being fixed to a fixation bracket with a bolt. The guard member includes: a top surface extending in the vehicle longitudinal direction; and an inclined surface which is inclined from the front toward the rear to a vehicle lower side from the tip end of the top surface. The guard member is fastened to the fixation bracket with a bolt at such a fastening angle that the axis of the bolt intersects perpendicularly with the inclination surface.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electric vehicle. [Background technology]

[0002] In the non-contact charging device described in Patent Document 1, even when the vehicle goes over a protrusion or bump on the road surface, the underside of the rear end of the receiving coil housing, i.e., the road surface interference avoidance part of the synthetic resin cover, has a curved shape that roughly follows the road surface interference line. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-128124 A Summary of the Invention [Problem to be solved by the invention]

[0004] When the guard member located adjacent to the front of the non-contact charging unit attached to the underside of the floor panel interferes with an obstacle in the road, a radial impact force is applied to the bolts used to fasten and secure the interference guard, which may cause the bolts to bend or loosen.

[0005] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide an electric vehicle that can prevent bending or loosening of the bolts that fasten and fix the guard members. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, the contactless charging device of the present invention is an electric vehicle comprising a contactless charging unit attached to the underside of a floor panel and receiving a contactless supply of power from a power supply unit located on the ground, and a guard member arranged on the underside of the floor panel adjacent to and in front of the contactless charging unit in the fore-and-aft direction of the vehicle, wherein the guard member is arranged and fixed to a fixing bracket with a bolt, and the guard member has a top surface extending in the fore-and-aft direction of the vehicle and an inclined surface that slopes from the tip of the top surface downward toward the bottom of the vehicle from the front to the rear, and the guard member is fastened to the fixing bracket with the bolt at a fastening angle such that the axis of the bolt intersects the inclined surface perpendicularly. Effect of the Invention

[0007] The electric vehicle according to the present invention has an advantage that it is possible to suppress bending or loosening of the bolts that fasten and secure the guard members when the guard members interfere with an obstacle on the road surface. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a cross-sectional view that shows a schematic view of a main part of a non-contact charging unit and a front guard member that are provided in an electric vehicle according to an embodiment. [Diagram 2] FIG. 2 is a diagram showing a case in which the non-contact charging unit and the front guard member are fixed to the same fixing bracket with the same bolt. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electric vehicle according to the present invention will be described below. However, the present invention is not limited to the embodiment.

[0010] Fig. 1 is a cross-sectional view showing a schematic diagram of a non-contact charging unit 2 and a main part of a front guard member 5 provided in an electric vehicle according to an embodiment. Note that an arrow Fr in Fig. 1 indicates the front in the vehicle longitudinal direction. Also, an arrow UPR in Fig. 1 indicates the upward direction in the vehicle height direction. Also, in this embodiment, the vehicle longitudinal direction is approximately the same as the horizontal direction, and the vehicle height direction is approximately the same as the vertical direction.

[0011] 1, the electric vehicle according to the embodiment includes a battery pack 1 attached to the underside of a floor panel 10 (under the vehicle floor), a non-contact charging unit 2 attached to the underside of the battery pack 1 via a fixing bracket 3, and a front guard member 5 arranged adjacent to the front of the non-contact charging unit 2. The electric vehicle according to the embodiment also includes a rear guard member (not shown) arranged behind the non-contact charging unit. In this embodiment, the front guard member 5 will be described as an example, but since the rear guard member basically has the same configuration and mounting structure as the front guard member 5, it is sufficient to replace "front" with "rear" in the description of the front guard member 5, and therefore the description thereof will be omitted.

[0012] The non-contact charging unit 2 is fastened to a fixing bracket 3 with bolts 4. The non-contact charging unit 2 receives power in a non-contact manner from a power supply unit arranged on the ground to charge the battery pack 1. The power of the battery pack 1 is supplied to a motor that drives the electric vehicle. The front guard member 5 is attached to the underside of the battery pack 1 via a fixing bracket 6. The front guard member 5 is fastened to the fixing bracket 6 with bolts 7. The front guard member 5 is provided to protect the non-contact charging unit 2 from interference with road obstacles 8 such as curbs on the road surface.

[0013] The bolt 7 fastens the front guard member 5 to the fixing bracket 6 at a fastening angle such that the axis AX of the bolt 7 intersects perpendicularly with the inclined surface 51 of the front guard member 5. The inclined surface 51 of the front guard member 5 is inclined at an inclination angle θ with respect to the top surface 52 from the tip of the top surface 52, which extends in the vehicle fore-and-aft direction (approximately horizontal direction) of the front guard member 5, downward toward the vehicle from the front to the rear. The inclined surface 51 of the front guard member 5 is the portion of the front guard member 5 that interferes with (collides with) a road obstacle 8 when the electric vehicle is moving forward.

[0014] As shown in FIG. 1, for example, when an electric vehicle advances at a speed v0 and the front guard member 5 interferes with a road obstacle 8, the front guard member 5 receives an impact force F0 from the front. At this time, the fastening angle of the bolt 7 is set so that the axis AX of the bolt 7 is perpendicular to the inclined surface 51 of the front guard member 5, so that the radial force F0cos90° (shear load) acting on the bolt 7 through the front guard member 5 can be reduced to be less than the horizontal component force F0x of the impact force F0. Note that, when the front guard member 5 is fastened and fixed to the fixing bracket 6 with the bolt 7 at a fastening angle such that the axis AX of the bolt 7 is in the same direction as the vertical direction, the horizontal component force F0x of the impact force F0 is approximately equal to the radial force (shear load) acting on the bolt 7 through the front guard member 5 when the front guard member 5 receives the impact force F0 from the front during interference.

[0015] In the electric vehicle according to the embodiment, when the front guard member 5 interferes with the road obstacle 8, the radial force acting on the bolt 7 can be reduced, and the bolt 7 can be prevented from bending or from rotating in a direction that reduces (weakes) the fastening torque and becoming loose due to bolt slippage in which the bolt 7 slides in the radial direction. In principle, the radial force F0cos90° acting on the bolt 7 is 0 N. Therefore, the radial force F0cos90° acting on the bolt 7 can be reduced without reducing the inclination angle θ of the inclined surface 51 of the front guard member 5. This can prevent the length of the front guard member 5 in the vehicle front-rear direction from increasing due to the reduction in the inclination angle θ, making it difficult to secure a mounting space for the front guard member 5 below the floor panel 10 (under the vehicle floor).

[0016] 1, the non-contact charging unit 2 and the front guard member 5 are fixed to separate fixing brackets 3, 6 with separate bolts 4, 7, but this is not limited to this. For example, as shown in FIG. 2, the non-contact charging unit 2 and the front guard member 5 may be fixed to the same fixing bracket 6 with the same bolt 7 by sandwiching a support portion 21 provided on the front side of the non-contact charging unit 2 in the vehicle front-rear direction between the front guard member 5 and the fixing bracket 6.

[0017] In this embodiment, the non-contact charging unit 2 and the front guard member 5 are described as being arranged below the battery pack 1, but for example, the non-contact charging unit 2 and the front guard member 5 may also be configured to be attached to the floor panel 10 via a fixing bracket. [Explanation of symbols]

[0018] 1 Battery pack 2 Non-contact charging unit 3,6 Fixing bracket 4.7 Volts 5 Front guard member 8 Road Obstacles 10 Floor Panel

Claims

[Claim 1] a wireless charging unit that is attached to the underside of the floor panel and receives a wireless supply of power from a power supply unit disposed on the ground; a guard member disposed under the floor panel and adjacent to the front of the non-contact charging unit in the vehicle front-rear direction; An electric vehicle comprising: The guard member is disposed by being fixed to a fixing bracket with a bolt, The guard member has a top surface extending in a front-rear direction of the vehicle and an inclined surface inclined from a tip of the top surface downward toward the vehicle from the front to the rear, an electric vehicle, wherein the guard member is fastened to the fixing bracket by the bolt at a fastening angle such that an axis of the bolt intersects the inclined surface perpendicularly.

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