JP2016078713A - Vehicle high voltage electric device mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle high voltage electric device mounting structure capable of suppressing disconnection of a high voltage electric harness connected to a high voltage electric device while protecting the high voltage electric device at the time of vehicle front collision.SOLUTION: The vehicle high voltage electric device mounting structure includes a bracket 11 connected to the front of a car body 10, and a high voltage electric device 12 disposed above the bracket 11 so that at least a part can be positioned in the vehicle front of the bracket 11. A high voltage electric harness 20 is connected to the inside part of the high voltage electric device 12 in a car width direction, and the high voltage electric harness 20 extends downward. In at least one of the opposite surface 11a of the bracket 11 and the opposite surface 12a of the high voltage electric device 12 overlapping each other in a vehicle longitudinal direction and a vertical direction, slopes 11b and 12b are formed to extend obliquely upward from a vehicle front side to a vehicle rear side and extend obliquely downward from outside to inside in the car width direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a structure for mounting high-power equipment in a vehicle.

  2. Description of the Related Art Conventionally, vehicles equipped with high-power devices such as inverters, converters, vehicle drive motors, and air conditioner compressors are known (see, for example, Patent Document 1).

  In the vehicle described in Patent Document 1, a mounting table is fixed to the front of the vehicle body, and an inverter (high power device) is mounted on the mounting table. A guide member extending obliquely upward as it goes rearward is provided. According to the vehicle described in Patent Document 1, the inverter is moved along the guide member and moved to the vehicle rear side at the time of a frontal collision of the vehicle, so that the inverter is disposed on the vehicle rear side of the inverter. It is possible to avoid damage due to contact with the on-vehicle equipment.

JP 2009-029275 A

  However, in the vehicle described in Patent Document 1, the high-voltage harness connected to the inverter is pulled and disconnected as the inverter moves along the guide member and moves to the vehicle rear side at the time of a frontal collision of the vehicle. There was a problem that there was a risk of doing.

  Accordingly, an object of the present invention is to provide a structure for mounting a high-power device in a vehicle that can prevent disconnection of a high-voltage harness connected to the high-power device while protecting the high-power device in the event of a frontal collision of the vehicle. .

  In the high-power equipment mounting structure for a vehicle according to the present invention, the high-power equipment is disposed above the bracket so that the bracket is coupled to the front portion of the vehicle body and at least a part thereof is positioned in front of the bracket. A high-voltage harness is connected to an inner portion in the vehicle width direction of the high-voltage device, and the high-voltage harness extends downward. At least one of the opposing surface of the bracket and the opposing surface of the high-voltage equipment that overlap when viewed from the vehicle front-rear direction and overlap when viewed from the top-bottom direction extends obliquely upward as it goes from the vehicle front side to the vehicle rear side and the vehicle width An inclined portion that extends obliquely downward as it goes from the outer side to the inner side in the vehicle width direction is formed.

  In the vehicle high-power equipment mounting structure according to the present invention, at least one of the opposing surface of the bracket and the opposing surface of the high-power equipment that overlap when viewed from the front-rear direction and overlap when viewed from the top-bottom direction, from the vehicle front side to the vehicle rear side. An inclined portion is formed that extends obliquely upward as it goes to and extends obliquely downward as it goes from the outside in the vehicle width direction to the inside in the vehicle width direction. As a result, when the opposing surface of the high power device comes into contact with the opposing surface of the bracket due to the backward movement of the high power device due to the frontal collision of the vehicle, the high power device moves upward along the inclined portion and moves to the vehicle rear side. Thus, the high-power device is sandwiched between the collision partner vehicle or another vehicle-mounted device arranged in front of the high-power device and another vehicle-mounted device arranged behind the high-power device. This can be avoided, and it is possible to protect the high-powered device at the time of a frontal collision of the vehicle. In addition, by tilting the high-voltage equipment in the vehicle width direction along the inclined portion at the time of a frontal collision of the vehicle, it is possible to avoid the rising of the inner portion in the vehicle width direction of the high-voltage equipment to which the high-voltage harness is connected. Disconnection of the harness can be suppressed. Therefore, according to the high-power equipment mounting structure for a vehicle according to the present invention, it is possible to suppress disconnection of the high-power harness connected to the high-power equipment while protecting the high-power equipment at the time of a frontal collision of the vehicle.

It is a perspective view which shows the high-power equipment mounting structure of the vehicle which concerns on embodiment of this invention. It is a top view which shows the high electric equipment mounting structure of the vehicle which concerns on embodiment of this invention. It is a front view which shows the high-power equipment mounting structure of the vehicle which concerns on embodiment of this invention. It is a side view which shows the high-power equipment mounting structure of the vehicle which concerns on embodiment of this invention. It is a partially broken perspective view which shows the engagement state of an engine mount bracket and an inverter. It is a perspective view of an engine mount bracket. (A) is a top view of an engine mount bracket, (b) is the sectional view on the AA line of (a), (c) is the sectional view on the BB line of (a). It is explanatory drawing which shows the motion of the inverter at the time of the front collision of a vehicle. It is a partially broken perspective view which shows the engagement state of the engine mount bracket and inverter which concern on the modification of this invention. It is a top view which shows the high electric equipment mounting structure of the vehicle which concerns on the modification of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  In the figure, arrow FR indicates the front of the vehicle, arrow UP indicates the upper side of the vehicle, and arrow IN indicates the inner side in the vehicle width direction.

  Vehicles to which the high-power equipment mounting structure according to the present embodiment is applied are electric vehicles such as a hybrid electric vehicle (HEV) and a plug-in hybrid electric vehicle (PHEV) including an engine (not shown).

  As shown in FIGS. 1 to 4, the vehicle to which the high-power equipment mounting structure according to the present embodiment is applied includes a vehicle body 10, an engine mount bracket (bracket) 11, and an inverter (high-power equipment) 12.

  The vehicle body 10 has a pair of left and right side members 13 extending in the vehicle front-rear direction. A radiator core support member side 14 is coupled to the front end portion of each side member 13, and a radiator core support member upper 15 is bridged between the pair of left and right radiator core support member sides 14. A bumper stay 16 is coupled to the front end of each side member 13, and a bumper reinforcement (not shown) is bridged between the pair of left and right bumper stays 16.

  The engine mount bracket 11 supports the engine and is disposed on the vehicle rear side of the radiator core support member side 14 and the radiator core support member upper 15. Specifically, the engine mount bracket 11 has one end coupled to the side member 13 and the other end extending from the one end inward in the vehicle width direction. The engine mount bracket 11 is provided with an engine mount mounting portion 17 on which an engine mount (mount rubber) (not shown) is mounted, and the engine is disposed below the engine mount bracket 11. Further, as shown in FIGS. 6 and 7, the engine mount bracket 11 is provided with a bolt hole 18 into which a later-described bolt 27 is screwed, and a bolt into which a later-described bolt 25 is screwed. A hole 19 is provided in the other end.

  The inverter 12 is disposed above the engine mount bracket 11 so that at least a part thereof is positioned in front of the engine mount bracket 11 in the vehicle. The inverter 12 is disposed in a state of being tilted forward and inward with respect to the vehicle body 10. In addition, a high-voltage harness 20 is connected to a center portion in the vehicle longitudinal direction on the inner side surface of the inverter 12 in the vehicle width direction, and the high-voltage harness 20 extends downward.

  The inverter 12 has a first fixed point 21 disposed on the inner side in the vehicle width direction than the center of the inverter 12 in the vehicle width direction, and a second fixed point disposed on the outer side in the vehicle width direction of the inverter 12 in the vehicle width direction. The point 22 and the third fixed point 23 are fixed at a total of three points.

  The first fixing point 21 is provided on a first mounting foot 24 that extends downward from the rear end of the lower surface of the inverter 12, and is fixed to the engine mount bracket 11 using a bolt 25 or the like. The second fixing point 22 is provided on a second mounting foot portion 26 that extends downward from a center portion in the vehicle longitudinal direction on the lower surface of the inverter 12, and is fixed to the engine mount bracket 11 using a bolt 27 or the like. Note that the second fixing point 22 may be fixed to the side member 13 on the vehicle rear side of the engine mount bracket 11.

  As shown in FIG. 5, the first fixing point 21 includes a bolt insertion hole 28 provided at the lower end of the first mounting foot 24, and a notch that communicates with the bolt insertion hole 28 and extends in the vehicle front-rear direction. 29, and this notch 29 is open to the front side of the vehicle. On the other hand, as shown in FIG. 5, the second fixing point 22 extends in the vehicle front-rear direction by communicating with the bolt insertion hole 30 provided at the lower end of the second mounting foot 26 and the bolt insertion hole 30. A cutout 31 that is present, and the cutout 31 is open to the front side of the vehicle. The length of the notch 31 of the second fixed point 22 in the vehicle front-rear direction is shorter than the length of the notch 29 of the first fixed point 21 in the vehicle front-rear direction, and the inverter 12 is pushed to the vehicle rear side. In this case, the second fixing point 22 is released before the first fixing point 21.

  The third fixing point 23 is provided on a fixing bracket 32 extending from the front end portion of the upper surface of the inverter 12 to the front side of the vehicle, and is fixed to the radiator core support member upper 15 using a bolt 33 or the like. The third fixed point 23 is disposed outside the center of the inverter 12 in the vehicle width direction, and is disposed at the front end portion of the inverter 12 so that a load applied to the inverter 12 at the time of a frontal collision of the vehicle is first applied. To receive. As a result, a large load can be applied to the second fixed point 22 disposed on the vehicle rear side of the third fixed point 23, and the second fixed point 22 is released before the first fixed point 21. Can do.

  In the high-power equipment mounting structure for a vehicle according to the present embodiment, the engine mount bracket 11 and the inverter 12 have opposing surfaces 11a and 12a that overlap when viewed from the front-rear direction of the vehicle and overlap when viewed from the top-bottom direction. And it extends diagonally upward as it goes from the vehicle front side to the vehicle rear side to the facing surface 11a of the engine mount bracket 11 and the facing surface 12a of the inverter 12, and diagonally downward as it goes from the vehicle width direction outside to the vehicle width direction inside Inclined portions (inclined surfaces) 11b and 12b are formed respectively. The inclined portion 11b (opposing surface 11a) of the engine mount bracket 11 is formed on the upper surface of the engine mount bracket 11 as shown in FIGS. As shown in FIGS. 3 and 4, the inclined portion 12 b (opposing surface 12 a) of the inverter 12 is formed on the lower end surface of the protruding portion 34 that extends downward from the lower surface of the inverter 12. In the present embodiment, the inclined portion 11b of the engine mount bracket 11 and the inclined portion 12b of the inverter 12 are arranged such that the inclined portion 12b (opposing surface 12a) of the engine mount bracket 11 is caused by the backward movement of the inverter 12 caused by a frontal collision of the vehicle. It arrange | positions at intervals in the vehicle front-back direction so that it may contact the inclination part 11b (opposing surface 11a). It is not limited to this, The inclined part 11b (opposing surface 11a) of the engine mount bracket 11 and the inclined part 12b (opposing surface 12a) of the inverter 12 may contact in advance.

  Note that the inclined portions 11b and 12b may be formed on one of the facing surface 11a of the engine mount bracket 11 and the facing surface 12a of the inverter 12. Further, these inclined portions (inclined surfaces) 11b and 12b are not limited to planes, and may be curved surfaces, for example. Further, the inclined portion 12b comes into contact with the inclined portion 11b of the engine mount bracket 11 due to the backward movement of the inverter 12 due to the frontal collision of the vehicle, or the inclined portion 11b of the engine mount bracket 11 and the inclined portion 12b of the inverter 12 are connected. The protrusion 34 may be provided with or without the protrusion 34 as shown in FIGS.

  Next, the movement of the inverter 12 at the time of a frontal collision of the vehicle will be described with reference to FIG.

  When a load is input from the front of the vehicle to the vehicle and the front portion of the vehicle body 10 is compressed and deformed, as shown in FIG. (For example, a radiator) is pushed to the vehicle rear side. When the inverter 12 is pushed to the rear side of the vehicle, the second fixing point 22 of the inverter 12 is released before the first fixing point 21 as shown in FIG. The portion 12b contacts the inclined portion 11b of the engine mount bracket 11. Then, the inverter 12 is lifted upward by the inclined portions 11b and 12b and tilted inward in the vehicle width direction, and rotates around the first fixed point 21 as a rotation center. Specifically, the inverter 12 moves to the vehicle rear side while rising along the inclined portions 11b and 12b, and is inclined inward in the vehicle width direction along the inclined portions 11b and 12b.

  Below, the effect by this embodiment is demonstrated.

  (1) The high-power equipment mounting structure for a vehicle according to the present embodiment includes an engine mount bracket 11 coupled to the front portion of the vehicle body 10 and an engine mount bracket so that at least a part thereof is positioned in front of the vehicle of the engine mount bracket 11. 11, and an inverter 12 disposed above 11. A high-voltage harness 20 is connected to the inner portion of the inverter 12 in the vehicle width direction, and the high-voltage harness 20 extends downward. The engine mount bracket 11 and the inverter 12 have opposing surfaces 11a and 12a that overlap when viewed from the vehicle longitudinal direction and overlap when viewed from the vertical direction. At least one of the facing surface 11a of the engine mount bracket 11 and the facing surface 12a of the inverter 12 extends obliquely upward as it goes from the vehicle front side to the vehicle rear side, and diagonally goes from the vehicle width direction outer side to the vehicle width direction inner side. Inclined portions 11b and 12b extending downward are formed.

  In the high-power equipment mounting structure for a vehicle according to the present embodiment, the vehicle is viewed from the front side of the vehicle on each of the opposing surface 11a of the engine mount bracket 11 and the opposing surface 12a of the inverter 12 that overlap when viewed from the vehicle front-rear direction and overlap when viewed from the vertical direction. Inclined portions 11b and 12b are formed which extend obliquely upward as going to the rear side and extend obliquely downward as going from the vehicle width direction outer side to the vehicle width direction inner side. Thus, when the inclined portion 12b (opposing surface 12a) of the inverter 12 comes into contact with the inclined portion 11b (opposing surface 11a) of the engine mount bracket 11 due to the backward movement of the inverter 12 due to the frontal collision of the vehicle, the inverter 12 By moving to the vehicle rear side while moving up along the inclined portions 11b and 12b, the inverter 12 is placed on the other vehicle-mounted device disposed in front of the collision partner vehicle or the inverter 12 and on the vehicle rear side of the inverter 12. It is possible to avoid being pinched between other installed vehicle-mounted devices, and it is possible to protect the inverter 12 at the time of a frontal collision of the vehicle. In addition, by tilting the inverter 12 inward in the vehicle width direction along the inclined portions 11b and 12b at the time of a frontal collision of the vehicle, it is possible to avoid a rise in the vehicle width direction inner portion of the inverter 12 to which the high voltage harness 20 is connected. Thus, disconnection of the high voltage harness 20 can be suppressed.

  Therefore, according to the high-power equipment mounting structure for a vehicle according to the present embodiment, disconnection of the high-voltage harness 20 connected to the inverter 12 can be suppressed while protecting the inverter 12 at the time of a frontal collision of the vehicle.

  (2) The inclined portions 11b and 12b are formed on the outer side in the vehicle width direction than the center of the inverter 12 in the vehicle width direction.

  Thereby, only the part on the vehicle width direction outer side of the inverter 12 can be pushed by the inclined portions 11b and 12b at the time of the frontal collision of the vehicle, and the inverter 12 is more reliably moved along the inclined portions 11b and 12b at the time of the frontal collision of the vehicle. It becomes possible to incline inward in the vehicle width direction.

  (3) The inverter 12 is disposed at least at the first fixed point 21 disposed on the inner side in the vehicle width direction from the center in the vehicle width direction of the inverter 12 and on the outer side in the vehicle width direction from the center in the vehicle width direction of the inverter 12. The second fixing point 22 is fixed. When a load is input to the inverter 12 from the front side of the vehicle toward the rear side of the vehicle and the inverter 12 moves toward the rear side of the vehicle, the second fixing point 22 is released from being fixed before the first fixing point 21.

  As a result, the first fixing point 21 of the inverter 12 can be prevented from being released before the second fixing point 22, the relative position of the high-voltage harness 20 with respect to the inverter 12 is determined, and the disconnection due to the tension of the high-voltage harness 20 is established. Can be more effectively suppressed.

  (4) The first fixing point 21 is fixed to the engine mount bracket 11, and the second fixing point 22 is fixed to the engine mount bracket 11, or fixed to the side member 13 on the vehicle rear side of the engine mount bracket 11. Is done.

  As a result, the entire region on the front side of the vehicle relative to the engine mount bracket 11 can be used as a region for absorbing the collision energy, and the collision energy absorption performance can be improved.

  By the way, although the high electric equipment mounting structure of the vehicle of this invention was demonstrated taking the example of the above-mentioned embodiment, it is not restricted to this embodiment, Various embodiments are employ | adopted in the range which does not deviate from the summary of this invention. Can do.

  In the above-described embodiment, the high-power device mounted on the vehicle is an inverter. However, the high-power equipment mounted on the vehicle is not limited to this, and may be, for example, a converter, a vehicle drive motor, an air conditioner compressor, or the like.

  In the above-described embodiment, the bracket that supports the high-power device is the engine mount bracket. However, the bracket that supports the high-power device is not limited to this, and may be a bracket other than the engine mount bracket or a dedicated bracket for supporting the high-power device.

  Further, as shown in FIG. 9, the second mounting foot portion 26 where the second fixing point 22 of the inverter 12 is provided is weaker than the first mounting foot portion 24 where the first fixing point 21 is provided (fragile). Part) 40 may be provided. Thereby, it is possible to release the second fixing point 22 earlier at the time of a frontal collision of the vehicle. In the high-power equipment mounting structure for a vehicle shown in FIG. 9, the fragile portion 40 is formed by a V-shaped notch in a side view opened to the front side of the vehicle.

  Further, as shown in FIG. 10, a convex portion 41 may be provided on the outer side of the front surface of the inverter 12 in the vehicle width direction. In the vehicle high-power equipment mounting structure shown in FIG. 10, when the frontal collision of the vehicle, the convex portion 41 provided on the front surface of the inverter 12 first receives the load applied to the inverter 12. Will be pushed. Thereby, at the time of a frontal collision of the vehicle, a large load can be applied to the second fixed point 22 of the inverter 12, and the second fixed point 22 can be unfixed earlier. 10, the third fixed point 23 of the inverter 12 is provided at the center of the inverter 12 in the vehicle width direction.

  Furthermore, the connection location of the high-voltage harness 20 to the inverter 12 may be a portion on the inner side in the vehicle width direction of the inverter 12, and may be any of the inner side surface, the upper surface, and the rear surface in the vehicle width direction.

10 Car body 11 Engine mount bracket (bracket)
11a Opposing surface 11b Inclined part 12 Inverter
12a Opposing surface 12b Inclined portion 13 Side member 20 High-voltage harness 21 First fixing point 22 Second fixing point

Claims (4)

A bracket coupled to the front of the vehicle body;
A high-powered device disposed above the bracket so that at least a part of the bracket is positioned in front of the vehicle;
A high-voltage harness connected to an inner portion of the high-voltage device in the vehicle width direction and extending downward;
The bracket and the high-power device have opposing surfaces that overlap when viewed from the front-rear direction of the vehicle and overlap when viewed from the top-bottom direction,
At least one of the opposing surface of the bracket and the opposing surface of the high voltage equipment extends obliquely upward as it goes from the vehicle front side to the vehicle rear side, and extends obliquely downward as it goes from the vehicle width direction outside to the vehicle width direction inside. A structure for mounting high-power equipment in a vehicle, characterized in that an existing inclined portion is formed. The structure according to claim 1, wherein the inclined portion is formed on the outer side in the vehicle width direction than the center in the vehicle width direction of the high power device. The high-power device is disposed at least at a first fixing point disposed on the inner side in the vehicle width direction than the center of the high-power device in the vehicle width direction, and on the outer side in the vehicle width direction of the center of the high-power device in the vehicle width direction. Fixed at the second fixing point,
The second fixing point is released before the first fixing point when a load is input from the vehicle front side to the vehicle rear side and the vehicle moves toward the vehicle rear side. The vehicle-mounted high-power equipment mounting structure according to claim 1 or 2. The first fixing point is fixed to the bracket;
The structure for mounting high-power equipment in a vehicle according to claim 3, wherein the second fixing point is fixed to the bracket, or is fixed to a side member on a vehicle rear side of the bracket.

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