Support structure for high-voltage components

Abstract

According to the present invention, a support structure for a high-voltage component of a vehicle comprises a front bracket that extends in the vehicle front-back direction so as to connect a high-voltage component and a vehicle body member that extends in the vehicle width direction at a front end of an anterior accommodation space. The front bracket includes: a top surface part that extends in the vehicle front-back direction; and a side surface part. The top surface part has a notched recess that is formed over a prescribed area in the front-back direction between a vehicle body fixing part and a component fixing part so as to run toward one side in the vehicle width direction from a side edge part that is on the other side. A deformation induction part that is the origin of deformation when the vehicle is in a frontal collision is provided in the area in which the notched recess is formed.

Description

[Technical Field]

[0001] The present disclosure relates to a support structure for high voltage components. [Background technology]

[0002] In hybrid vehicles (HVs) and plug-in hybrid vehicles (PHEVs) that are equipped with a drive source (power unit) that combines an engine and a motor, some have a layout in which high-voltage components such as the power control unit (inverter, etc.) that controls the motor are located above the power unit due to storage space and the layout of high-voltage cables. In such vehicles, a high-voltage component (e.g., an inverter) is supported on a vehicle body member via a bracket. Patent Document 1 discloses a bracket that extends between the high-voltage component and the vehicle body member on the front side of the vehicle to support the high-voltage component. The bracket is plate-shaped and has a protruding portion that is bent convexly so that at least a portion of the protruding portion overlaps both the support portion on the vehicle body side and the high-voltage component, and is structured to cushion the impact on the high-voltage component in the event of a vehicle collision. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-111154 Summary of the Invention [Problem to be solved by the invention]

[0004] When a vehicle collides, the deformation of the vehicle body components causes the high-voltage components to be pushed and displaced through the brackets, but depending on the direction of displacement, there is a risk that the high-voltage components may interfere with the power unit below or surrounding on-board components. For this reason, there is a need to prevent interference between high-voltage components and surrounding components by controlling the displacement of the high-voltage components.

[0005] In the bracket disclosed in Patent Document 1, the impact of a vehicle collision is absorbed by the deformation of the protruding parts, which fold over each other, but the structure is not designed to control the displacement of the high-voltage components to avoid interference with surrounding components, and the technical concept behind this is neither disclosed nor suggested.

[0006] In view of the above circumstances, at least one embodiment of the present invention aims to provide a support structure for high-voltage components of a vehicle that can absorb the impact of a collision by deformation during a frontal collision of the vehicle, while controlling the displacement of the high-voltage components and suppressing interference between the high-voltage components and surrounding components. [Means for solving the problem]

[0007] (1) In at least one embodiment of the present invention, a support structure for a high-voltage component of a vehicle is provided in a front accommodation space in which a power unit is accommodated at the front of the vehicle, and is installed in an area above the power unit. The support structure includes a front bracket extending in the longitudinal direction of the vehicle between a front body member extending in the vehicle width direction at the front end of the front accommodation space and the high-voltage component, and connecting the two together. The front bracket extends in the longitudinal direction of the vehicle and has a body fixing portion fixed to the front body member and a front bracket for fixing the high-voltage component. The vehicle body fixing member includes an upper surface portion provided with a component fixing portion to which a component is fixed, and a side portion extending downward from one of the side edges in the vehicle width direction of the upper surface portion and extending in the vehicle fore-and-aft direction along the one side edge, the upper surface portion being formed over a predetermined range in the fore-and-aft direction between the vehicle body fixing portion and the component fixing portion and having a cutout recess cut out from the side edge on the other side in the vehicle width direction towards one side, and a deformation inducing portion which becomes the starting point of deformation in the event of a frontal collision of the vehicle is provided in the range where the cutout recess is formed on the upper surface portion.

[0008] According to the configuration (1) above, when the front body member is pushed back by a frontal collision of the vehicle, the front bracket bends (deforms) with the deformation inducing portion provided on the upper surface of the front bracket as the deformation starting point. This makes it possible to absorb the impact of the collision while controlling the pushback (displacement) of the high-voltage components and suppressing interference between the high-voltage components and the power unit.

[0009] (2) In some embodiments, in the configuration of (1) above, the front bracket further includes a flange portion that is provided along the lower edge of the side portion and extends in the vehicle width direction from the lower edge of the side portion, and a notch is formed in the flange portion in the fore-and-aft direction of the vehicle corresponding to the position of the deformation-inducing portion of the upper surface portion.

[0010] According to the above configuration (2), the notch formed corresponding to the position of the deformation inducing portion facilitates bending (deformation) with the deformation inducing portion as the starting point of deformation, thereby controlling the retreat (displacement) of the high-voltage component and suppressing interference between the high-voltage component and the power unit.

[0011] (3) In some embodiments, in the configuration of (1) or (2) above, holes are formed in the side surface portions at positions corresponding to the positions of the deformation inducing portions of the upper surface portion in the vehicle longitudinal direction.

[0012] According to the above configuration (3), the holes formed corresponding to the positions of the deformation inducing portions facilitate bending (deformation) with the deformation inducing portions as the deformation starting point, thereby controlling the retreat (displacement) of the high-voltage components and suppressing interference between the high-voltage components and the power unit.

[0013] (4) In some embodiments, in any one of the configurations (1) to (3) above, the side portion has an approximately constant vertical width from the front end of the front bracket, and then gradually widens downward as it extends rearward, and the position where the widening of the vertical width begins is located rearward of the deformation-inducing portion.

[0014] According to the above-mentioned configuration (4), bending behind the position where the vertical width starts to increase is suppressed, which facilitates bending (deformation) starting from the deformation inducing portion, thereby controlling the retreat (displacement) of the high-voltage components and suppressing interference between the high-voltage components and the power unit.

[0015] (5) In some embodiments, in any one of the configurations (1) to (4) above, the upper surface portion of the front bracket is formed so that, within the range in which the cutout recess is formed, the width gradually narrows from both ends of the cutout recess in the vehicle fore-and-aft direction in the direction in which they approach each other, and the position where the width is narrowest is the deformation-inducing portion.

[0016] According to the configuration (5) above, the bending starts from the position where the width of the notched recess on the upper surface is narrowest, so that the retraction (displacement) of the high-voltage components can be controlled to suppress interference between the high-voltage components and the power unit.

[0017] (6) In some embodiments, in any one of the configurations (1) to (5) above, the front storage space further includes a support bracket extending inward in the vehicle width direction from a side body member extending in the fore-and-aft direction of the vehicle on both sides of the front storage space in the vehicle width direction, the support bracket supporting the high-voltage component, the end of the front bracket on the component fixing portion side being connected to the support bracket, and the cutout recess being provided on the side opposite to the side facing the side body member in the vehicle width direction.

[0018] According to the configuration (6) above, when the front body member moves backward due to a frontal collision of the vehicle, the front bracket bends toward the side body member on which the support bracket is provided, thereby controlling the backward movement (displacement) of the high-voltage components and suppressing interference between the high-voltage components and the power unit.

[0019] (7) In some embodiments, in any one of the configurations (1) to (5) above, a side bracket is further provided that is provided on the side of the high-voltage component in the fore-and-aft direction of the vehicle on the side body member side of the high-voltage component and supports the high-voltage component to the side body member, the side bracket including a first support portion that supports the front side of the high-voltage component in the fore-and-aft direction of the vehicle, and a second support portion that is provided at a distance from the first support portion in the fore-and-aft direction of the vehicle and supports the rear side of the high-voltage component in the fore-and-aft direction of the vehicle, the first support portion and the second support portion being connected by a flat connecting portion that extends in the fore-and-aft direction of the vehicle.

[0020] According to the configuration (7) above, even if the front body member is moved backward in a frontal collision of the vehicle and the high-voltage component is pushed, the side bracket deforms at the flat connection portion, so that the backward movement (displacement) of the high-voltage component can be controlled and interference between the high-voltage component and the power unit can be suppressed.

[0021] (8) In some embodiments, in the configuration of (7) above, the first support portion has a first component fixing portion fixed to the underside of the high-voltage component, a first side wall portion extending downward from an outer end of the first component fixing portion in the vehicle width direction, and a first vehicle body fixing portion extending outward in the vehicle width direction from a lower end of the first side wall portion and fixed to the vehicle body, and the second support portion has a second component fixing portion fixed to the underside of the high-voltage component, a second side wall portion extending downward from the outer end of the second component fixing portion in the vehicle width direction and extending in an arc shape toward the front of the vehicle and toward the outside in the vehicle width direction than the second component fixing portion, and a second vehicle body fixing portion extending outward in the vehicle width direction from the lower end of the second side wall portion and fixed to the vehicle body, and the connection portion extends continuously from the first component fixing portion toward the rear of the vehicle and is connected to an upper edge of a portion of the second side wall portion extending forward and toward the outside in the vehicle width direction than the second component fixing portion.

[0022] According to the configuration (8) above, even if the front body member is moved backward in a frontal collision of the vehicle and the high-voltage component is pushed, the side bracket deforms at the connection portion, so that the backward movement (displacement) of the high-voltage component can be controlled and interference between the high-voltage component and the power unit can be suppressed.

[0023] (9) In some embodiments, in the configuration of (8) above, a notch is provided on the upper edge of the second side wall portion in a region between the connecting portion and the second component fixing portion.

[0024] According to the configuration (9) above, large deformation occurs between the connection portion and the second component fixing portion in the event of a frontal collision of the vehicle, so that the retreat (displacement) of the high-voltage component can be controlled to suppress interference between the high-voltage component and the power unit. [Effects of the Invention]

[0025] According to at least one embodiment of the present invention, in the event of a frontal collision of a vehicle, the impact of the collision can be absorbed by deformation, while the displacement of high-voltage components can be controlled to suppress interference with surrounding components. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is a perspective view schematically illustrating a support structure for a high-voltage component and its surrounding configuration according to an embodiment of the present invention; [Figure 2] 2 is a plan view showing the support structure for the high-voltage component shown in FIG. 1 and its peripheral configuration. FIG. [Figure 3] FIG. 3 is a plan view schematically showing the front bracket shown in FIGS. 1 and 2. [Figure 4] FIG. 4 is a side view of the front bracket shown in FIG. 3. [Figure 5-1] FIG. 2 is a side view showing the behavior of the support structure for high-voltage components due to a vehicle collision, illustrating the state before the collision. [Figure 5-2] FIG. 10 is a side view showing the behavior of the support structure for high-voltage components due to a vehicle collision, illustrating a state during the collision. [Figure 5-3] FIG. 2 is a side view showing the behavior of the support structure for high-voltage components due to a vehicle collision, showing the state after the collision. [Figure 6-1] FIG. 10 is a plan view showing the bending behavior of the front bracket due to a vehicle collision, showing the state before the collision. [Figure 6-2] FIG. 10 is a plan view showing the bending behavior of the front bracket due to a vehicle collision, showing a state during the collision. [Figure 6-3] FIG. 10 is a plan view showing the bending behavior of the front bracket due to a vehicle collision, showing the state after the collision. [Figure 7] FIG. 3 is a plan view schematically showing the side bracket shown in FIGS. 1 and 2. [Figure 8] FIG. 8 is a side view of the side bracket shown in FIG. 7. [Figure 9-1]FIG. 2 is a side view showing the behavior of the support structure for high-voltage components due to a vehicle collision, illustrating the state before the collision. [Figure 9-2] FIG. 10 is a side view showing the behavior of the support structure for high-voltage components due to a vehicle collision, illustrating a state during the collision. [Figure 9-3] FIG. 2 is a side view showing the behavior of the support structure for high-voltage components due to a vehicle collision, showing the state after the collision. [Figure 10-1] FIG. 10 is a plan view showing the bending behavior of the side bracket due to a vehicle collision, showing the state before the collision. [Figure 10-2] FIG. 10 is a plan view showing the bending behavior of the side bracket due to a vehicle collision, showing a state during the collision. [Figure 10-3] FIG. 10 is a plan view showing the bending behavior of the side bracket due to a vehicle collision, showing the state after the collision. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, several embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of components described as embodiments or shown in the drawings are merely illustrative examples and are not intended to limit the scope of the present invention.

[0028] Fig. 1 is a perspective view showing a support structure 2 of a high-voltage component 1 according to an embodiment of the present invention and its surrounding structure, and Fig. 2 is a plan view showing the support structure 2 of the high-voltage component 1 shown in Fig. 1 and its surrounding structure.

[0029] 1 and 2, a support structure 2 for high-voltage components 1 according to an embodiment of the present invention is a support structure 2 for high-voltage components 1 that is installed above a power unit 4 (see FIGS. 5-1 to 5-3) in a front housing space 3 that houses the power unit 4 at the front of the vehicle. The power unit 4 is suspended from a pair of mount adapters 41 and mounted on side body members 31 (side members) that are provided on both sides of the front housing space 3 in the vehicle width direction. The power unit 4 is made up of, for example, an engine, a transaxle, a generator, and a motor, but is not limited to a structure that includes all of these.

[0030] The high-voltage component 1 is, for example, a power drive unit (hereinafter referred to as "PDU"), which is configured, for example, with an inverter and a variable voltage system, and is supplied with high-voltage power (DC voltage) from a high-voltage battery (not shown).

[0031] The high-voltage component 1 is arranged, for example, on one side in the vehicle width direction (e.g., the left side), and one of the pair of mount adapters 41 described above (e.g., the left side) is arranged in the rear lower region in the vehicle longitudinal direction.

[0032] The high-voltage component 1 is supported on the vehicle (vehicle body) by a support structure 2 for the high-voltage component 1 according to an embodiment of the present invention. The support structure 2 for the high-voltage component 1 according to an embodiment of the present invention includes a front bracket 5. The front bracket 5 extends in the longitudinal direction of the vehicle between a front vehicle body member 33 (front upper bar) extending in the vehicle width direction at the front end of the front accommodation space 3 and the high-voltage component 1, connecting them together. The front bracket 5 is supported by a support bracket 6 extending inward in the vehicle width direction from a side vehicle body member 31 provided on one side (e.g., the left side) in the vehicle width direction.

[0033] FIG. 3 is a plan view schematically showing the front bracket 5 shown in FIGS. 1 and 2, and FIG. 4 is a side view of the front bracket 5 shown in FIG.

[0034] 3 and 4, the front bracket 5 is formed, for example, by pressing a steel plate having a uniform thickness. The front bracket 5 includes an upper surface portion 51, side surfaces 53, and a flange portion 55. The upper surface portion 51 is fixed to the front body member 33 and the high-voltage component 1, and the flange portion 55 is fixed to the support bracket 6 (see FIG. 1).

[0035] 3, the upper surface portion 51 is a portion that constitutes the upper surface of the front bracket 5, extends in the fore-and-aft direction of the vehicle, and is provided with a vehicle body fixing portion 511 that is fixed to the front vehicle body member 33 and a component fixing portion 513 to which the high-voltage component 1 is fixed. The vehicle body fixing portion 511 is provided with a hole 511a through which a bolt passes, and the vehicle body fixing portion 511 is fixed to the front vehicle body member 33 by the bolt passing through the hole 511a. The component fixing portion 513 is provided with not only the hole 513a through which a bolt passes but also a seat 513b on which the leg 11 provided on the high-voltage component 1 sits, and the high-voltage component 1 is fixed to the front bracket 5 by the leg 11 and the bolt passing through the hole 513a.

[0036] The upper surface portion 51 has a cutout recess 515. The cutout recess 515 is formed over a predetermined range PR in the front-rear direction between the vehicle body fixing portion 511 and the component fixing portion 513, and is cut out from a side edge 51a on one side in the vehicle width direction to a side edge 51b on the other side. The cutout recess 515 is provided, for example, on the side opposite to the side facing the side vehicle body member 31 on which the support bracket 6 is provided in the vehicle width direction (see FIG. 2). A deformation inducing portion 515a, which serves as a starting point for deformation in the event of a frontal collision of the vehicle, is provided in the range of the cutout recess 515 of the upper surface portion 51. For example, the upper surface portion 51 is formed so that the width gradually narrows from both ends of the cutout recess in the vehicle front-rear direction in directions approaching each other in the range of the cutout recess 515, and the position where the width is smallest is the deformation inducing portion 515a.

[0037] As shown in FIG. 4 , the side surface portion 53 extends downward from one of the side edges 51b (51a) of the upper surface portion 51 in the vehicle width direction and extends in the vehicle front-rear direction along the one side edge 51b (51a). The side surface portion 53 has a substantially constant vertical width from the front end of the front bracket 5 and then gradually widens toward the bottom as it extends rearward, with a position 53P where the vertical width widening begins being located rearward of the deformation inducing portion 515a. In other words, the side surface portion 53 has a portion 53a whose vertical width is substantially constant from the vehicle body fixing portion 511 to the component fixing portion 513, and a portion 53b whose vertical width widens from the substantially constant vertical width portion 53a toward the component fixing portion 513. Furthermore, a hole 530a is formed in the side surface portion 53 at a position corresponding to the position of the deformation inducing portion 515a of the upper surface portion 51 in the vehicle front-rear direction. Furthermore, holes 530b and 530c are formed in the side surface portion 53 at the boundary of the vehicle body fixing portion 511 and the boundary of the component fixing portion 513 in the vehicle longitudinal direction.

[0038] 3, flange portion 55 is provided along the lower edge of side surface portion 53 and extends from the lower edge of side surface portion 53 in the vehicle width direction. Flange portion 55 is provided, for example, so as to extend on the side surface portion 53 opposite to the upper surface portion 51. Furthermore, flange portion 55 is provided with bracket fixing portion 551 at an end portion on the component fixing portion 513 side. Two holes 551a and 551b through which bolts pass are provided in bracket fixing portion 551, and bracket fixing portion 551 is fixed to support bracket 6 by bolts passing through these two holes 551a and 551b, respectively. Furthermore, flange portion 55 is provided with notches 550a corresponding to the positions of deformation inducing portions 515a of upper surface portion 51 in the vehicle longitudinal direction.

[0039] 5-1 to 5-3 are side views showing the behavior of the support structure 2 for the high-voltage component 1 due to a vehicle collision, and FIGS. 6-1 to 6-3 are plan views showing the bending behavior of the front bracket 5. FIG.

[0040] As shown in FIG. 5-1, the high-voltage component 1 is installed in an area above the power unit 4, and is supported by a front bracket 5 that connects the high-voltage component 1 and a front body member 33 of the front housing space 3. As shown in FIG. 5-2, when the vehicle collides, the front body member 33 of the front housing space 3 moves backward in the longitudinal direction of the vehicle. At this time, the front bracket 5 begins to bend from the deformation-inducing portion 515a of the upper surface portion 51 between the body fixing portion 511 and the component fixing portion 513 (see FIG. 5-2), and the front body member 33 side of the front bracket 5 is pushed upward (see FIG. 5-2). As the vehicle collision progresses, the front body member 33 of the front housing space 3 moves backward further in the longitudinal direction of the vehicle (see FIG. 5-3). At this time, the bending of the front bracket 5 progresses and begins at either the boundary of the vehicle body fixing portion 511 or the boundary of the component fixing portion 513 (see FIG. 6-3), and the front bracket 5 bends in a Z shape (see FIG. 5-3).

[0041] According to the support structure 2 for high-voltage component 1 according to the embodiment of the present invention described above, when the front body member 33 moves backward due to a frontal collision of the vehicle, the front bracket 5 bends (deforms) starting from the deformation inducing portion 515a provided on the upper surface portion 51 of the front bracket 5. This makes it possible to control the backward movement of the high-voltage component 1 and suppress interference between the high-voltage component 1 and the power unit 4 while absorbing the impact of the collision.

[0042] Furthermore, since notch 550a is provided in flange 55 at a position corresponding to deformation inducing portion 515a of upper surface 51 in the vehicle longitudinal direction, bending (deformation) starting from deformation inducing portion 515a is facilitated. This makes it possible to control the retreat (displacement) of high-voltage component 1 and suppress interference between high-voltage component 1 and power unit 4.

[0043] Furthermore, holes 530a are formed in side surface portion 53 at positions corresponding to the positions of deformation inducing portions 515a of top surface portion 51 in the vehicle longitudinal direction, facilitating bending (deformation) with deformation inducing portions 515a as the deformation starting point. This makes it possible to control the retreat (displacement) of high-voltage component 1 and suppress interference between high-voltage component 1 and power unit 4.

[0044] Furthermore, side surface portion 53 has a generally constant vertical width from the front end of front bracket 5, and then gradually widens downward as it extends rearward, with position 53P where the vertical width widening begins being located rearward of deformation inducing portion 515a, thereby suppressing bending rearward of position 53P where the vertical width widening begins. This facilitates bending (deformation) starting from deformation inducing portion 515a, thereby controlling the retreat (displacement) of high-voltage component 1 and suppressing interference between high-voltage component 1 and power unit 4.

[0045] Furthermore, the width of the cutout recess 515 is gradually narrowed from both ends in the vehicle longitudinal direction in the directions in which they approach each other, and the position where the width is narrowest is the deformation inducing portion 515a, so that the front bracket 5 bends from the position where the width of the cutout recess 515 of the upper surface portion 51 is narrowest as the starting point. This makes it possible to control the setback (displacement) of the high-voltage component 1 and suppress interference between the high-voltage component and the power unit.

[0046] Furthermore, since the cutout recess 515 is provided on the side opposite to the side facing the side body member 31 in the vehicle width direction, when the front body member 33 moves backward due to a frontal collision of the vehicle, the front bracket 5 bends toward the side body member 31 on which the support bracket 6 is provided. This makes it possible to control the backward movement (displacement) of the high-voltage component 1 and suppress interference between the high-voltage component 1 and the power unit 4.

[0047] 1 and 2, the support structure 2 for a high-voltage component 1 according to an embodiment of the present invention further includes a side bracket 7. The side bracket 7 is provided on the side of the high-voltage component 1 facing a vehicle body member 31 in the fore-and-aft direction of the vehicle, and supports the high-voltage component 1 on the vehicle body member 31. For example, the side bracket 7 is provided on one side (e.g., the left side) in the vehicle width direction between the vehicle body member 31 and the high-voltage component 1, and is fixed to a support bracket 6 extending inward in the vehicle width direction from the vehicle body member 31 provided on the one side (e.g., the left side) in the vehicle width direction, and to a gate-shaped metal fitting 35 that mounts a mount adapter 41 on the vehicle body member 31.

[0048] FIG. 7 is a plan view schematically showing the side bracket 7 shown in FIGS. 1 and 2, and FIG. 8 is a side view of the side bracket 7 shown in FIG.

[0049] 7 and 8, the side bracket 7 is formed, for example, by pressing a steel plate having a uniform thickness. The side bracket 7 includes a first support portion 71 and a second support portion 73, and the high-voltage component 1 is supported on the side vehicle body member 31 at the first support portion 71 and the second support portion 73. For example, in the example shown in FIGS. 1 and 2, the front side of the high-voltage component 1 in the longitudinal direction of the vehicle is supported by the support bracket 6 at the first support portion 71, and the rear side of the high-voltage component 1 in the longitudinal direction of the vehicle is supported by a gate-shaped metal fitting 35 that mounts the mount adapter 41 on the side vehicle body member 31 at the second support portion 73, which is provided at an interval from the first support portion in the longitudinal direction of the vehicle.

[0050] The first support portion 71 has a first component fixing portion 711, a first side wall portion 715, and a first vehicle body fixing portion 713. The first component fixing portion 711 is a portion that is fixed to the front side of the high-voltage component 1 in the vehicle longitudinal direction, and is fixed to the underside of the high-voltage component 1. The first side wall portion 715 is a portion that extends downward from the outer end of the first component fixing portion 711 in the vehicle width direction. The first vehicle body fixing portion 713 is a portion that extends outward in the vehicle width direction from the lower end of the first side wall portion and is fixed to the vehicle body, and is fixed to, for example, the end of the support bracket 6 on the side of a vehicle body member. The first component fixing portion 711 has a hole 711a through which a bolt passes, and the first component fixing portion 711 is fixed to the underside of the high-voltage component 1 by the bolt passing through the hole 711a. The first vehicle body fixing portion 713 is provided with a hole 713a through which a bolt passes, and the first vehicle body fixing portion 713 is fixed to the side vehicle body member 31 by a bolt passing through the hole 713a.

[0051] The second support portion 73 has a second component fixing portion 731, a second side wall portion 735, and a second vehicle body fixing portion 733. The second component fixing portion 731 is fixed to the rear side of the high-voltage component 1 in the vehicle front-rear direction and is fixed to the underside of the high-voltage component 1. The second side wall portion 735 extends downward from the outer end of the second component fixing portion 731 in the vehicle width direction and extends in an arc shape toward the front of the vehicle and toward the outer side in the vehicle width direction than the second component fixing portion. The second vehicle body fixing portion 733 is fixed to the vehicle body side by extending outward in the vehicle width direction from the lower end of the second side wall portion 735. For example, the second component fixing portion 731 is fixed to a gate-shaped metal fitting 35 that mounts the mount adapter 41 to the side vehicle body member 31. The second component fixing portion 731 has a hole 731a through which a bolt passes, and the second component fixing portion 731 is fixed to the high-voltage component 1 by the bolt passing through the hole 731a. The second vehicle body fixing portion 733 is provided with a hole 733a through which a bolt passes, and the second vehicle body fixing portion 733 is fixed to the side vehicle body member 31 by the bolt passing through the hole 733a. The second side wall portion 735 has an arc-shaped cross section, and the above-mentioned second vehicle body fixing portion 733 is provided with an arc-shaped notch 733b concentric with the second side wall portion 735.

[0052] The first support portion 71 and the second support portion 73 are connected by a flat connecting portion 75 that extends in the vehicle front-rear direction. The connecting portion 75 is provided to extend continuously from the first component fixing portion 711 toward the rear of the vehicle and is connected to the upper edge of a portion of the second side wall portion 735 that extends forward and outward in the vehicle width direction beyond the second component fixing portion 731.

[0053] Furthermore, the side bracket 7 is provided with a notch 77 on the upper edge of the second side wall portion 735. The notch 77 is provided by cutting downward in a portion between the connecting portion 75 and the second component fixing portion 731.

[0054] 9-1 to 9-3 are diagrams showing the behavior of the support structure 2 for the high-voltage component 1 due to a vehicle collision, and FIGS. 10-1 to 10-3 are plan views showing the bending behavior of the side bracket 7. FIG.

[0055] As shown in FIG. 9-1 , the high-voltage component 1 is installed above the power unit 4 and is supported by a side bracket 7 provided between the high-voltage component 1 and a side body member 31 of the front storage space 3. As shown in FIG. 9-2 , when the vehicle crashes, the front body member 33 of the front storage space 3 may move backward in the vehicle longitudinal direction, pushing the high-voltage component 1 rearward. At this time, the side bracket 7 begins to deform at the connection portion 75 and around the connection portion 75 (see FIGS. 9-2 and 10-2 ). For example, deformation begins at the connection portion 75 and the second side wall portion 735, causing the boundary between the connection portion 75 and the second side wall portion 735 to swell, and the second body fixing portion 733 begins to lift off relative to the side body member 31 (see FIG. 9-2 ). As shown in FIG. 9-3 , as the vehicle crash progresses, the front body member 33 of the front storage space 3 may move further backward in the vehicle longitudinal direction, pushing the high-voltage component 1 further rearward. At this time, the deformation of the side bracket 7 progresses, the second side wall portion 735 is significantly deformed, and the second vehicle body fixing portion 733 is lifted up relative to the vehicle side body member 31 (see FIG. 9-3).

[0056] According to the support structure 2 for high-voltage component 1 according to the embodiment of the present invention described above, the first support portion and the second support portion are connected by a flat-plate-shaped connecting portion extending in the longitudinal direction of the vehicle, so that even if the front body member 33 moves backward in a frontal collision of the vehicle and the high-voltage component 1 is pushed, the side bracket 7 deforms at the flat-plate-shaped connecting portion 75. This makes it possible to control the backward movement (displacement) of the high-voltage component 1 and suppress interference between the high-voltage component 1 and the power unit 4.

[0057] Furthermore, since connection portion 75 is provided continuously from first component fixing portion 711 and extends rearward of the vehicle and is connected to the upper edge of a portion of second side wall portion 735 that extends forward and outward in the vehicle width direction from second component fixing portion 731, even if the front body member 33 moves backward in a frontal collision of the vehicle and the high-voltage component 1 is pushed, side bracket 7 is deformed at connection portion 75. This makes it possible to control the backward movement (displacement) of the high-voltage component 1 and suppress interference between the high-voltage component 1 and power unit 4.

[0058] In addition, a notch is cut downward at the upper edge of the second side wall portion 735 in the area between the connection portion 75 and the second component fixing portion 731, so that in the event of a frontal collision of the vehicle, there is a large deformation between the connection portion 75 and the second component fixing portion 731, and therefore the retreat (displacement) of the high-voltage component 1 can be controlled to suppress interference between the high-voltage component 1 and the power unit 4.

[0059] The present invention is not limited to the above-described embodiments, but also includes modifications to the above-described embodiments and appropriate combinations of these modifications.

[0060] Although various embodiments have been described above with reference to the drawings, it goes without saying that the present invention is not limited to such examples. It is clear that a person skilled in the art can conceive of various modifications or alterations within the scope of the claims, and it is understood that these also naturally fall within the technical scope of the present invention. Furthermore, the components of the above-described embodiments may be combined in any manner without departing from the spirit of the invention.

[0061] This application is based on a Japanese patent application (Patent Application No. 2021-205387) filed on December 17, 2021, the contents of which are incorporated by reference into this application. [Explanation of symbols]

[0062] 1. High voltage components 11 Legs 2 Support structure 3 Front storage space 31 Side body member (side member) 33 Front body member (front upper bar) 35 Gate-shaped metal fittings 4 Power Unit 41 Mount adapter 5 Front bracket 51 Top part 51a,51b side edge 511 Body fixing part 511a Hole 513 Parts fixing part 513a Hole 513b locus 515 Notch recess 515a Deformation induction section 53 Side part 53a Part with approximately constant vertical width 53b The part where the width increases 53P Widening start position 530a,530b,530c hole 55 flange 550a cutout 551 Bracket fixing part 551a,551b holes 6 Support Bracket 7 Side Bracket 71 1st support part 711 First part fixing part 711a Hole 713 First body fixing part 713a hole 715 First side wall 73 Second support part 731 Second part fixing part 731a Hole 733 Second body fixing part 733a hole 733b Notch 735 Second side wall 75 Connection 77 Notch

Claims

1. A support structure for high-voltage components of a vehicle installed in an area above a power unit in a front accommodation space in a front portion of the vehicle in which the power unit is accommodated, a front bracket extending in the front-rear direction of the vehicle between a front vehicle body member extending in the vehicle width direction at a front end of the front accommodation space and the high-voltage component, and connecting the two together; The front bracket is an upper surface portion extending in the vehicle longitudinal direction and provided with a vehicle body fixing portion fixed to the front vehicle body member and a component fixing portion to which the high-voltage component is fixed; a side surface portion extending downward from one side edge portion in a vehicle width direction of the upper surface portion and extending in a vehicle front-rear direction along the one side edge portion; Including, The upper surface portion is a cutout recess formed over a predetermined range in the front-rear direction between the vehicle body fixing portion and the component fixing portion, the cutout recess being cut out from a side edge portion on the other side in the vehicle width direction toward one side, A support structure for a high-voltage component of a vehicle, wherein a deformation inducing portion that serves as a starting point of deformation in the event of a frontal collision of the vehicle is provided in the area where the notched recess is formed in the upper surface portion.

2. The front bracket is The vehicle further includes a flange portion provided along a lower edge portion of the side surface portion and extending in a vehicle width direction from the lower edge portion of the side surface portion, A notch is formed in the flange portion in a position corresponding to the position of the deformation inducing portion of the upper surface portion in the vehicle front-rear direction. The support structure for a high voltage component of a vehicle according to claim 1.

3. A hole is formed in the side surface portion at a position corresponding to the position of the deformation inducing portion of the upper surface portion in the vehicle front-rear direction. The support structure for a high voltage component of a vehicle according to claim 1.

4. 2. The support structure for a high-voltage component of a vehicle according to claim 1, wherein the side portion has an approximately constant vertical width from the front end of the front bracket, and then gradually widens downward as it extends rearward, and the position where the widening of the vertical width begins is located rearward of the deformation-inducing portion.

5. 2. The support structure for high-voltage components of a vehicle according to claim 1, wherein the upper surface portion of the front bracket is formed so that its width gradually narrows from both ends of the cutout recess in the vehicle fore-and-aft direction in the direction in which they approach each other within the range in which the cutout recess is formed, and the position where the width is narrowest is defined as the deformation-inducing portion.

6. the vehicle further includes support brackets extending inward in the vehicle width direction from side vehicle body members extending in the vehicle front-rear direction on both sides of the front storage space in the vehicle width direction, and supporting the high-voltage components; An end portion of the front bracket on the component fixing portion side is connected to the support bracket, The cutout recess is provided on a side opposite to a side facing the side vehicle body member in the vehicle width direction. The support structure for a high voltage component of a vehicle according to any one of claims 1 to 5.

7. a side bracket provided on the side of the high-voltage component facing the vehicle body member along the vehicle longitudinal direction, the side bracket supporting the high-voltage component on the vehicle body member; The side bracket is a first support portion that supports a front side of the high-voltage component in the vehicle longitudinal direction; and a second support portion that is spaced apart from the first support portion in the vehicle longitudinal direction and supports a rear side of the high-voltage component in the vehicle longitudinal direction, 7. The support structure for a high-voltage component of a vehicle according to claim 6, wherein the first support portion and the second support portion are connected by a flat-plate-shaped connecting portion extending in the longitudinal direction of the vehicle.

8. the first support portion includes a first component fixing portion fixed to a lower surface of the high-voltage component, a first side wall portion extending downward from an outer end of the first component fixing portion in the vehicle width direction, and a first vehicle body fixing portion extending outward in the vehicle width direction from a lower end of the first side wall portion and fixed to the vehicle body, the second support portion includes a second component fixing portion fixed to a lower surface of the high-voltage component, a second side wall portion extending downward from an outer end of the second component fixing portion in the vehicle width direction and extending in an arc shape toward the front of the vehicle and toward the outer side in the vehicle width direction than the second component fixing portion, and a second vehicle body fixing portion extending outward in the vehicle width direction from a lower end of the second side wall portion and fixed to the vehicle body, 8. The support structure for high-voltage components of a vehicle according to claim 7, wherein the connection portion extends continuously from the first component fixing portion toward the rear of the vehicle and is connected to an upper edge of a portion of the second side wall portion that extends forward and outward in the vehicle width direction from the second component fixing portion.

9. a notch cut downwardly in an upper edge of the second side wall portion between the connecting portion and the second component fixing portion; The support structure for a high voltage component of a vehicle according to claim 8.

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