JP2012214161A - Electric component arrangement structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect an electric component (electric-power converter 50) against hitting by a leg of a passenger seated in a rear seat, to secure the foot space for the passenger as much as possible, and to prevent the passenger from feeling uncomfortable due to heat generated by the electronic component, when the electric component (electric-power converter) generating the heat is arranged between a seat cushion of a front seat and a floor panel 15.SOLUTION: A bracket 57 for supporting the electronic component (electric-power converter 50) by the floor panel 15 and having a covering part 57a covering the upper side of the electric component is disposed, and the bracket 57 is disposed so that inclined surfaces 57j, 57k inclined upward toward the vehicle front side are formed on the upper surface of the covering part 57a.

Description

  The present invention belongs to a technical field related to an electric component arrangement structure for a vehicle including an electric component that generates heat and is arranged between a seat cushion of a front seat and a floor panel.

  Conventionally, for example, as shown in Patent Document 1, a power supply device is disposed between a seat cushion of a front seat (driver seat or passenger seat) and a floor panel forming a bottom surface of a passenger compartment. It is known to do so.

JP 2003-341373 A

  If an electric component that generates heat, such as a power supply device, is arranged between the seat cushion of the front seat and the floor panel as in the conventional example, the arrangement position is in the vehicle interior. The reliability of the electrical component can be improved, and the space below the front seat can be used effectively.

  By the way, when the electrical parts as described above are arranged between the seat cushion of the front seat and the floor panel, depending on the position of the front seat in the front-rear direction that can slide in the vehicle front-rear direction, the passenger seated on the rear seat There is a possibility that the front end portion of the foot of the vehicle will hit the electrical component, and it is necessary to protect the electrical component against such a foot contact and to secure the foot space of the occupant. In addition, the heat generated by the electrical components may cause discomfort to the occupant.

  The present invention has been made in view of such points, and an object of the present invention is to sit on a rear seat when an electrical component that generates heat is disposed between a seat cushion of a front seat and a floor panel. Protect the electrical components against the foot of the occupant, and secure as much space as possible for the occupant, and try to prevent the passenger from feeling uncomfortable due to the heat generated by the electrical component. It is in.

  In order to achieve the above object, in the vehicle electrical component arrangement structure of the present invention, a floor panel that forms the bottom surface of the vehicle compartment of the vehicle, and a slidable support in the vehicle longitudinal direction are supported on the floor panel. A front seat, a rear seat disposed on the rear side of the front seat on the floor panel, and an electrical component that generates heat disposed between a seat cushion of the front seat and the floor panel; A bracket for supporting the electrical component on the floor panel, and the bracket has a covering portion that covers the upper side of the electrical component, and is on the upper surface of the covering portion and toward the vehicle front side. It was set as the structure supported by the said floor panel so that the inclined surface which inclines may be formed.

  With the above configuration, the cover of the bracket covers the upper side of the electrical component. Therefore, even if the tip of the foot of the passenger seated on the rear seat hits the cover, the electrical component is protected by the cover. can do. In addition, since an inclined surface that is inclined upward toward the front side of the vehicle is formed on the upper surface of the covering portion, the height position on the rear side of the covering portion is reduced, and the tip of the occupant's foot hits the covering portion. This makes it difficult to protect the electrical component more effectively, and the foot space of the occupant is not limited by the electrical component. Further, the bracket can prevent the heat of the electrical component from being directed toward the occupant's foot (upper side).

  In the electric component disposition structure of the vehicle, a support portion supported by the floor panel is provided at an end portion of the bracket on the vehicle rear side, and the inclined surface is located on the vehicle front side of the support portion. A first inclined surface and a second inclined surface located on the vehicle front side of the first inclined surface, wherein an inclination angle of the first inclined surface with respect to the horizontal is relative to the horizontal of the second inclined surface It is preferably larger than the inclination angle.

  As a result, when the tip of the foot seated on the rear seat hits the cover, the tip of the foot enters between the seat cushion of the front seat and the floor panel and hits the cover. The tip of the foot hits the first inclined surface first, is guided upward by the first inclined surface, and is difficult to contact the second inclined surface. Further, by positioning the first inclined surface above the end portion of the electrical component on the vehicle rear side, the vehicle rear side of the electrical component is covered by the portion where the first inclined surface in the covering portion is formed. In addition, the upper part of the electric component is basically covered by the portion where the second inclined surface having a gentle inclination is formed in the covering portion, so that the electric component can be made as large as possible.

  In the electric component disposition structure of the vehicle, the electric component is preferably supported by the floor panel while being spaced apart from the floor panel by the bracket.

  As a result, a gap is created between the electrical component and the floor panel, and the heat generated by the electrical component can be dissipated into the gap, and it is effective for the heat of the electrical component to be directed toward the occupant's feet. Can be prevented.

  When the electrical component is spaced above the floor panel, the electrical component has an electrical component main body that generates heat, and a heat sink that dissipates the heat generated by the electrical component main body, It is preferable that the heat sink is disposed below the electrical component main body.

  By doing so, the heat sink can surely dissipate the heat of the electrical component to the lower side of the electrical component, and when the lower part of the vehicle is submerged, the electrical component main body is not immersed in water as much as possible. Can be.

  In the electrical component arrangement structure of the vehicle, when the front seat is in the foremost position of the slide movable range, the entire electrical component overlaps the seat cushion of the front seat in a plan view. It is preferable.

  As a result, even when the front seat is in the foremost position in the slidable range, the electrical components can be protected from the occupant's feet seated on the rear seat, and the electrical components are difficult to see from the occupant. The appearance of the passenger compartment floor can be improved in combination with the provision of the bracket.

  In the vehicle electrical component disposition structure, the vehicle further includes a front cross member disposed on the floor panel and positioned on the front side of the electrical component and extending in the vehicle width direction. It is preferable that the vehicle rear side end portion of the bracket is supported by the upper surface of the front cross member, and is supported by the vehicle rear side portion of the electrical component on the floor panel.

  Accordingly, the end portion of the bracket on the front side of the vehicle can be easily supported at a position higher than the end portion on the rear side of the vehicle by using the front cross member corresponding to the inclination of the upper surface of the covering portion.

  In the electrical component disposition structure of the vehicle, the vehicle further includes a rear cross member disposed on the floor panel and positioned on the rear side of the electrical component and extending in the vehicle width direction, and the upper surface of the rear cross member is It is preferable that the vehicle is inclined upward toward the vehicle front side.

  In this way, when the foot of the occupant seated on the rear seat is placed on the upper surface of the rear cross member, the tip of the foot faces upward, so that the tip of the foot does not easily hit the cover of the bracket. Become.

  When the upper surface of the rear cross member is inclined upward toward the vehicle front side as described above, at least a part of the inclined surface is located on an extension of the upper surface of the rear cross member. Is preferred.

  As a result, the tip of the foot of the occupant seated on the rear seat, which is placed on the upper surface of the rear cross member, is substantially along the upper surface of the covering portion, making it more difficult to hit the covering portion of the bracket. .

  As described above, according to the electric component disposition structure for a vehicle of the present invention, the bracket has a covering portion that covers the upper side of the electric component, and the upper surface of the covering portion is on the upper side toward the vehicle front side. By adopting a configuration in which an inclined surface that is inclined is formed, it is possible to protect electrical components against the foot contact of the occupant seated on the rear seat, and the foot space of the occupant is The space can be secured without being limited by the electrical component, and the passenger can be prevented from feeling uncomfortable due to the heat generated by the electrical component.

It is a top view which shows the principal part of the vehicle body of the vehicle to which the electrical component arrangement | positioning structure which concerns on embodiment of this invention was applied. It is a side view which shows a front seat and its support structure. It is a top view which expands and shows the lower side of the left front seat in a floor panel. It is a disassembled perspective view which shows the structure of a power converter device. It is the VV sectional view taken on the line of FIG. It is a figure which shows the electrical connection relationship of a generator, an electrical storage apparatus, a power converter device, a battery, and vehicle-mounted electrical equipment. FIG. 6 is a view corresponding to FIG. 5 showing a modification in which the height relationship between the inclined surface of the bracket and the upper surface of the rear cross member is made different.

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

  FIG. 1 shows a vehicle body 1 of a vehicle to which an electrical component arrangement structure according to an embodiment of the present invention is applied. The left side of FIG. 1 corresponds to the front side of the vehicle (vehicle body 1). Hereinafter, the front, rear, left, right, top and bottom of the vehicle (vehicle body 1) are simply referred to as front, rear, left, right, top and bottom, respectively.

  A pair of left and right front side frames 2 extending in the front-rear direction are disposed at both ends of the front portion of the vehicle body 1 in the vehicle width direction (left-right direction). A space between the two front side frames 2 is an engine room 3 in which an engine (not shown) is disposed. The rear portion of each front side frame 2 is a kick portion (not shown) whose height position gradually decreases toward the rear side. A dash panel 5 that partitions the engine room 3 and the vehicle compartment is provided at substantially the same longitudinal position as the kick portion so as to extend in the vehicle width direction and the vertical direction.

  Wheel house panels 8 constituting wheel houses are fixed to the outer surfaces of the left and right front side frames 2 in the vehicle width direction, and suspension towers 9 are provided on the upper surfaces of the left and right wheel house panels 8, respectively. .

  Crash cans 11 are respectively disposed at the front ends of the left and right front side frames 2. A flange portion 2a is formed at the front end of each front side frame 2, and a flange portion 11a is also formed at the rear end of the crush can 11, and in the state where these flange portions 2a and 11a are combined, a fastening (not shown) It is fixed by members (bolts and nuts).

  The front ends of the left and right crash cans 11 are respectively fastened to the left and right ends of the bumper beam 12 extending in the vehicle width direction. The bumper beam 12 is disposed in a front bumper (not shown) provided at the front end of the vehicle and receives a collision load at the time of a frontal collision of the vehicle. When the bumper beam 12 receives a collision load at the time of a frontal collision of the vehicle from the front side, the left and right crash cans 11 are crushed in the front-rear direction to absorb the impact. At the time of a light collision, only the crash can of the crash can 11 and the front side frame 2 is crushed to absorb the shock. However, at the time of a heavy collision where the crash can 11 alone cannot absorb the shock, the front side frame 2 is also Shock is absorbed by crushing in the front-rear direction.

  The lower end portion of the dash panel 5 is connected to the front end portion of the floor panel 15 that forms the bottom surface of the passenger compartment. The floor panel 15 is located on the rear side of the front floor portion 15a and on the rear side of the front floor portion 15a. The rear floor portion rises from the rear end of the front floor portion 15a and is located at a height above the front floor portion 15a. 15b.

  On the front floor portion 15a of the floor panel 15, two left and right front seats 21 (one is a driver seat and the other is a passenger seat) are arranged side by side in the vehicle width direction. A rear seat 22 is disposed on the floor panel 15 on the vehicle rear side of the front seat 21 (that is, on the rear floor portion 5b). A rear portion of the front floor portion 15 a (a portion between the front seat 21 and the rear seat 22) is a portion that serves as a footrest for a passenger seated on the rear seat 22.

  As shown in FIG. 2, each front seat 21 includes a seat cushion 21a, a seat back 21b supported at the rear end portion of the seat cushion 21a so as to be pivotable (can be reclined), and the seat back 21b. And a headrest 21c attached to the upper end of the headrest.

  A tunnel portion 15c is formed in the vehicle width direction center portion (between the two left and right front seats 21) of the front floor portion 15a of the floor panel 15. In addition, front and rear cross members 16 and 17 extending in the vehicle width direction are disposed on the left and right side portions of the tunnel portion 15c on the upper surface of the front floor portion 15c so as to be spaced apart from each other in the front-rear direction.

  On the upper surfaces of the front and rear cross members 16, 17, two lower rail portions 25 a of the seat rail 25 for allowing the front seat 21 (seat cushion 21 a) to slide in the front-rear direction are provided for each front seat 21. It is fixed. The two lower rail portions 25a corresponding to the front seats 21 extend in the front-rear direction at the portions corresponding to both ends of the seat cushion 21a of the front seats 21 in the vehicle width direction, and the front cross member 16 and the rear cross member 17 It is spanned between. That is, the front end portion of each lower rail portion 25 a is attached and fixed to the rail fixing portion 16 a on the upper surface of the front cross member 16, and the rear end portion of each lower rail portion 25 a is attached and fixed to the rail fixing portion 17 a on the upper surface of the rear cross member 17. Has been. On the other hand, an upper rail portion 25b that is slidably movable in the front-rear direction with respect to the lower rail portion 25a is fixed to the lower ends of both end portions in the vehicle width direction of the seat cushion 21a of each front seat 21. By the engagement of the lower rail portion 25a and the upper rail portion 25b, the front seat 21 slides in the front-rear direction on the floor panel 15 (front floor portion 15a) via the front and rear cross members 16, 17 and the seat rail 25. It will be supported movably. In FIG. 2, when the front seat 21 is at the rearmost position of the slidable range, it is indicated by a solid line, and when it is at the forefront position of the slidable range, it is indicated by a two-dot chain line. Further, in FIG. 3, a time when the seat cushion 21 a of the front seat 21 is at the foremost position in the slidable range is indicated by a two-dot chain line.

  When the front seat 21 is at the rearmost position of the slide movable range, the front end of the seat cushion 21a of the front seat 21 is located at substantially the same position as the front cross member 16 in the front-rear direction, and the rear of the seat cushion 21a. The end is located on the rear side of the rear cross member 17. On the other hand, when the front seat 21 is in the foremost position of the slidable range, the front end of the seat cushion 21a is positioned in front of the front cross member 16, and the rear end of the seat cushion 21a is the rear cross member. In this case, an occupant seated on the rear seat 22 places its foot 71 (see FIG. 5) on the upper surface (portion excluding the rail fixing portion 17a) of the rear cross member 17. It becomes possible.

  The lower rail portion 25a of each front seat 21 is attached and fixed to the rail fixing portions 16a and 17a of the front and rear cross members 16 and 17 so as to incline upward toward the front side. As a result, the front seat 21 is supported on the floor panel 15 such that the height position of the seat cushion 21a of the front seat 21 rises as the front seat 21 slides forward. Note that the upper surfaces of the front and rear cross members 16 and 17 (including rail fixing portions 16a and 17a) are inclined upward toward the front side. The inclination angle of the upper surfaces of the front and rear cross members 16 and 17 with respect to the horizontal is the same as the inclination angle of the lower rail portion 25a with respect to the horizontal.

  A groove portion 16b extending in the vehicle width direction is formed in the front-rear direction central portion of the upper surface of the front cross member 16 except for the rail fixing portion 16a. On the upper surface of the rear cross member 17, the rail fixing portion 17a is positioned higher than the other portions. A groove portion 17b extending in the vehicle width direction is formed at the center in the front-rear direction of the portion excluding the rail fixing portion 17a on the upper surface of the rear cross member 17 (the portion lower than the rail fixing portion 17a).

  An instrument panel (not shown) is disposed on the surface of the dash panel 5 on the passenger compartment side, and an air conditioning unit 31 (see FIG. 1) for air conditioning the passenger compartment is disposed in the instrument panel. Yes. The air conditioning unit 31 blows air conditioned air from the air outlet provided in the instrument panel to the occupant seated on the front seat 21, and the left and right air conditioners extending from the lower part of the air conditioning unit 31 to the rear side. Air conditioned air (especially warm air) is blown out to the occupant seated on the rear seat 22 via the duct 32 (see FIGS. 1 to 3).

  The two air conditioning ducts 32 are disposed on the floor panel 15 (front floor portion 15a) so as to extend in the front-rear direction along the tunnel portion 15c in the vicinity of both left and right sides of the tunnel portion 15c. At the rear end of the air conditioning duct 32, there is provided a rear opening 32a that blows air conditioned air toward the rear side of the front seat 21, that is, the occupant seated on the rear seat 22. In the present embodiment, two outlets 32a are provided side by side in the vehicle width direction, and the blowout range of the conditioned air from the two outlets 32a is a hatched range in FIG. The conditioned air is blown out from the outlet 32a while spreading to the rear side.

  The air conditioning duct 32 extends to the rear side of the front cross member 16 below the seat cushion 21a of the front seat 21, and therefore, the front cross member 16 and the air conditioning duct 32 intersect each other. In the present embodiment, the front cross member 16 is formed with a hole through which the air conditioning duct 32 passes, and the air conditioning duct 32 penetrates the front cross member 16 through the hole in the front-rear direction. The position in the front-rear direction of the air outlet 32a of the air conditioning duct 32 is an intermediate position between the front cross member 16 and the rear cross member 17, and in this embodiment, the front cross member 16 and the rear cross member 17 It is a position slightly ahead of the center position between the two.

  In the present embodiment, as shown in FIG. 6, when the vehicle is decelerated, a power storage device 43 that stores electricity generated by a generator 41 (alternator) driven by the engine and disposed in the engine room 3 is provided. Is provided. In the present embodiment, the power storage device 43 includes a capacitor. The stored electricity (electric power) is supplied from the power storage device 43 to the in-vehicle electrical component 45 mounted on the vehicle via the power conversion device 50. The in-vehicle electrical component 45 is, for example, an audio device, a navigation device, a lighting device, or the like. Further, surplus electricity (electric power) that cannot be used by the in-vehicle electrical component 45 from the power storage device 43 is supplied to and stored in a battery 44 that supplies electricity (electric power) to the in-vehicle electrical component 45. When the vehicle is not decelerated, the power from the generator 41 is supplied to the battery 44 through the power converter 50 and stored.

  The power conversion device 50 includes a DC / DC converter that steps down the power from the generator 41 (power storage device 43) and outputs it to the battery 44 and the in-vehicle electrical component 45. That is, since the voltage (for example, 25 V) on the generator 41 and the power storage device 43 side is higher than the voltage (12 V) on the battery 44 and the vehicle electrical component 45 side, the battery 44 and the vehicle onboard from the power generator 41 (power storage device 43). When power is supplied to the electrical component 45, it is necessary to transform the power, and for this purpose, a power conversion device 50 including a DC / DC converter is provided.

  The power storage device 43 is disposed outside the left front side frame 2 in the vehicle width direction (left side), that is, on the left outside of the engine room 3 and at a position between the front wheel and the crash can 11 in the front-rear direction (see FIG. 1). The power storage device 43 is supported by the flange portion 2a of the left front side frame 2 or the flange portion 11a of the left crash can 11 (the flange portion connected to the flange portion 2a of the left front side frame 2). The As a result, the power storage device 43 is hardly affected by the heat from the engine, and can be efficiently cooled by the vehicle traveling wind. Further, at the time of a frontal collision (light collision) of the vehicle, the power storage device 43 does not hinder the shock absorbing action by the crash can 11 and the front side frame 2 is used in a heavy collision such that the front side frame 2 is crushed. It does not hinder the shock absorbing function.

  The battery 44 is a lead storage battery, and is disposed on the left rear side portion in the engine room 3, and the left front side frame 2 via a battery support bracket 48 disposed on the lower side of the battery 44. (See FIG. 1).

  As shown in FIGS. 1 and 3, the power conversion device 50 is disposed between a seat cushion 21a of a left front seat 21 (hereinafter simply referred to as a front seat 21) and a floor panel 15 (front floor portion 15a). The air conditioning duct 32 (hereinafter simply referred to as the air conditioning duct 32) disposed between the seat cushion 21a of the front seat 21 and the floor panel 15 is also arranged side by side in the vehicle width direction. It is installed. In the present embodiment, the power conversion device 50 is disposed so as to extend in the front-rear direction on the outer side in the vehicle width direction with respect to the air conditioning duct 32. The power conversion device 50 corresponds to an electrical component that generates heat according to the present invention.

  As shown in FIG. 4, the power conversion device 50 includes a power conversion device main body 51 (corresponding to an electrical component main body) including the DC / DC converter, a heat sink 52, a harness connection portion 53, and two terminals. Part 54.

  The power converter main body 51 includes a case 51a that houses the DC / DC converter. The lower surface of the case 51 a is open, and the opening is closed by the heat sink 52. The case 51 a is fixed to the upper surface of the tote sink 52.

  The heat sink 52 is provided on the lower side of the case 51a of the power conversion device main body 51. On the lower surface of the heat sink 52, there are a plurality of protrusions 52a that protrude downward and extend in the vehicle width direction. Are formed side by side. The heat generated by the power converter main body 51 (DC / DC converter) is dissipated downward by the heat sink 52.

  The harness connection portion 53 is provided on the outer surface in the vehicle width direction of the case 51 a of the power conversion device main body 51, so that the harness connection portion 53 is outside in the vehicle width direction than the power conversion device main body 51. Will be located. Further, since the power conversion device main body 51 is located on the outer side in the vehicle width direction than the air conditioning duct 32, the harness connection portion 53 is located on the outer side in the vehicle width direction with respect to the air conditioning duct 32. The heat sink 52 extends to the lower part of the harness connecting portion 53.

  The harness connection unit 53 connects the first harness 35 and the battery 44 that connect the power storage device 43 and the power conversion device 50 (DC / DC converter) and the second harness that connects the power conversion device 50 (DC / DC converter). This is a portion to which the end of the harness 36 on the power conversion device 50 side is connected. These two harnesses 35 and 36 pass through the lower side of the dash panel 5 and the lower side of the front portion of the front floor portion 15a, and are formed in through holes formed in the front portion of the harness connecting portion 53 in the front floor portion 15a. The vehicle enters the passenger compartment from 15d (see FIG. 3) and reaches the upper surface of the harness connection portion 53. Each end of the first and second harnesses 35 and 36 is attached with a connection fitting 37 in which a bolt insertion hole is formed, and a bolt erected on the harness connection part 53 in the bolt insertion hole. By fastening a nut (not shown) to the bolt 53a with the 53a inserted, the first and second harnesses 35 and 36 are electrically connected to the DC / DC converter via the connection fitting 37, the bolt 53a and the nut. Connected. In the present embodiment, power is supplied from the power conversion device 50 to the in-vehicle electrical component 45 via the second harness 36 and the third harness (not shown) that connects the battery 44 and the in-vehicle electrical component 45. Done.

  Since the harness connecting portion 53 is positioned on the outer side in the vehicle width direction with respect to the power converter main body 51 and the air conditioning duct 32, an operation of connecting the first and second harnesses 35 and 36 to the harness connecting portion 53 is performed. When performing from the outside in the vehicle width direction, the operation can be easily performed without being obstructed by the power converter main body 51 and the air conditioning duct 32.

  Since the power storage device 43 and the power conversion device 50 are arranged on the same side (left side in the present embodiment) with respect to the vehicle center in the vehicle width direction, they are arranged on the opposite side to the vehicle center. Compared to the case, the length of the first harness 35 can be shortened. Similarly, since the battery 44 and the power conversion device 50 are also arranged on the same side (left side) with respect to the vehicle center in the vehicle width direction, compared with the case where they are arranged on the opposite side with respect to the vehicle center. Thus, the length of the second harness 36 can be shortened. Thus, by reducing the length of the first and second harnesses 35 and 36 (particularly, the first harness 35 on the high voltage side), it is possible to suppress power supply loss.

  Two signal lines connecting the power converter 50 (DC / DC converter) and a controller (not shown) that is disposed in the engine room 3 and controls the power converter 50 to the two terminal portions 54. The ends of the power conversion device 50 (not shown) are connected to each other. These signal lines also enter the passenger compartment through the through hole 15d and extend upward as they are and are connected to the terminal portion 54.

  The power conversion device 50 is provided with a bracket 57 for supporting (attaching) the power conversion device 50 to the floor panel 15 (front floor portion 15a). The power conversion device 50 is supported by a portion between the front and rear cross members 16 and 17 in the floor panel 15 via a bracket 57. Accordingly, the front cross member 16 is positioned on the front side of the power conversion device 50, and the rear cross member 16 is positioned on the rear side of the power conversion device 50.

  The bracket 57 is fixedly attached to the upper surface of the heat sink 52 by four bolts 61 so as to cover the upper surface of the case 51 a of the power converter main body 51. That is, the bracket 57 has a covering portion 57 a that covers the upper side of the power conversion device 50.

  A front support portion 57b that is stepped up from the front end of the covering portion 57a and supported (fixed) to the upper surface of the front cross member 16 is provided on the front side of the covering portion 57a in the bracket 57 (front end portion of the bracket 57). On the rear side of the covering portion 57a in the bracket 57 (the rear end portion of the bracket 57), a rear side support portion 57c supported (attached and fixed) to the floor panel 15 is provided. In the present embodiment, the rear support portion 57c is connected to the floor via the support member 58 provided in the front portion of the rear cross member 17 on the upper surface of the floor panel 15 and in the rear portion of the power conversion device 50. It is supported by the panel 15. That is, the rear support portion 57c is supported (attached and fixed) to the upper surface of the support member 58. In addition, you may make it the rear side support part 57c be directly supported by the part of the rear side of the power converter device 50 in the floor panel 15 without attaching the support member 58 (attachment fixing).

  A protrusion 57d (see FIG. 5) protruding downward is formed on the lower surface of the front support part 57b, and a portion corresponding to the protrusion 57d on the upper surface of the front support part 57b is recessed in a dish shape. The lower surface of the protrusion 57d is in contact with the upper surface of the front cross member 16, and the front support portion 57b is moved forward at the protrusion 57d by a set of bolts 62 and nuts 63 (see FIGS. 3 and 5). It is fixedly attached to the upper surface of the cross member 16. The protrusion 57d abuts on a portion of the upper surface of the front cross member 16 that is out of the groove 16b (a rear portion of the groove 16b).

  The lower surface of the rear support portion 57c and the upper surface of the support member 58 are substantially flat. With the lower surface of the rear support portion 57c in contact with the upper surface of the support member 58, two sets of bolts 64 and nuts 65 (FIG. 3). 5), the rear support portion 57c is attached and fixed to the upper surface of the support member 58.

  Although not easily shown in the drawing, the front positioning portion 57e that is bent downward so as to protrude downward from the lower surface of the protrusion 57d and the bolt 62 are inserted into the protrusion 57d of the front support portion 57b. A bolt insertion hole 57f is provided (see FIGS. 3 and 4). The rear support portion 57c has a rear positioning portion 57g bent downward so as to protrude downward from the lower surface of the rear support portion 57c, and two bolt insertion holes through which the bolts 64 are inserted. 57h (see FIGS. 3 and 4). On the other hand, although not shown, a front positioning hole into which the front positioning portion 57e is fitted and a bolt insertion hole through which the bolt 62 is inserted are formed on the upper surface of the front cross member 16. A rear positioning hole into which the rear positioning portion 57g fits and two bolt insertion holes through which the bolts 64 are inserted are formed. When the bracket 57 attached to the power converter 50 is attached and fixed to the front cross member 16 and the support member 58, first, the front positioning portion 57e and the rear positioning portion 57g are moved to the front positioning hole of the front cross member 16. And the bracket 57 is positioned by being fitted in the rear positioning holes of the support member 58. Thereby, the positions of the bolt insertion holes 57f of the front support portion 57b and the bolt insertion holes of the front cross member 16 are aligned, and the two bolt insertion holes 57h of the rear support portion 57c and the two bolt insertions of the support member 58 are inserted. The positions with the holes are aligned. As a result, the fastening work of the bolts 62 and 64 and the nuts 63 and 65 is facilitated.

  The front side support portion 57 b is located at the inner side in the vehicle width direction at the front end portion of the bracket 57, and the rear side support portion 57 c is located at the outer side in the vehicle width direction at the rear end portion of the bracket 57. The center of gravity of the bracket 57 including the power conversion device 50 is located on the outer side in the vehicle width direction from the line connecting the center of the front support portion 57b and the center of the rear support portion 57c in plan view. Therefore, when the bracket 57 attached to the power converter 50 is attached and fixed to the front cross member 16 and the support member 58, the outer portion of the bracket 57 in the vehicle width direction is positioned when the bracket 57 is positioned as described above. Is inclined downward, and the lower surface of the protrusion 57d is lifted from the upper surface of the front cross member 16, which makes it difficult to perform the fastening operation. Therefore, in the present embodiment, an inclination preventing portion 57 i is provided on the outer side in the vehicle width direction at the front end portion of the bracket 57. Similar to the front support portion 57b, the tilt prevention portion 57i is stepped up from the front end of the covering portion 57a, and the lower surface of the tilt prevention portion 57i contacts the upper surface of the front cross member 16. Thereby, even if the outer portion of the bracket 57 in the vehicle width direction is inclined downward, the lower surface of the inclination preventing portion 57i is not inclined because it abuts against the upper surface of the front cross member 16, and therefore the lower surface of the protrusion 57d. Does not lift from the upper surface of the front cross member 16.

  As the bracket 57 is fixedly attached to the upper surface of the front cross member 16 and the upper surface of the support member 58 as described above, the power conversion device 50 is separated upward from the floor panel 15 (front floor portion 15a). In the state, it is supported by the floor panel 15. As a result, a gap is generated between the heat sink 52 and the floor panel 15 (front floor portion 15a), so that heat can be sufficiently dissipated by the heat sink 52.

  Further, since the heat sink 52 is disposed below the power converter main body 51, when the lower part of the vehicle is submerged, water can enter the case 51a of the power converter main body 51. It can be suppressed as much as possible. That is, when the heat sink 52 is disposed on the upper side of the power conversion device main body 51, a space for dissipating heat is required on the upper side of the heat sink 52. It will be close to the top surface of. For this reason, when the water level at the time of submergence of the vehicle is slightly higher than the upper surface of the floor panel 15, the power converter main body 51 is immersed in water and water enters the case 51a, so that the DC / The possibility that the DC converter is damaged is increased. Even at such a water level, the vehicle can normally travel. Therefore, it is preferable to prevent the water from entering the case 51a by arranging as in the present embodiment.

  In the state where the power converter 50 is inclined by the bracket 57 so that the upper surface of the power converter 50 (and the upper surface of the bracket 57) becomes higher toward the vehicle front side, the floor panel is interposed between the front cross member 16 and the support member 58. 15 is supported. That is, the upper surface of the front cross member 16 is higher than the upper surface of the support member 58, and the height position of the bracket 57 rises from the upper position of the support member 58 toward the upper position of the front cross member 16. As a result, the bracket 57 is formed on the floor panel 15 so that inclined surfaces (first and second inclined surfaces 57j and 57k described later) that are inclined upward toward the front side are formed on the upper surface of the covering portion 57a. It is supported.

  In the present embodiment, the inclined surface includes a first inclined surface 57j positioned on the front side of the rear support portion 57c and above the rear end portion of the power converter main body 51 (case 51a), and the first inclined surface 57j. And a second inclined surface 57k located on the front side of the inclined surface 57j and on the upper side of the power converter main body 51 (case 51a) excluding the rear end portion (see FIG. 5). The first inclined surface 57j extends obliquely upward from the portion stepped up from the front end of the rear support portion 57c toward the front side. The second inclined surface 57k extends while inclining upward from the front end of the second inclined surface 57j toward the front side so as to be continuous with the front side of the first inclined surface 57j. The front support portion 57b is stepped up from the front end of the second inclined surface 57k and is positioned on the front side of the second inclined surface 57k. The inclination angle of the first inclined surface 57j with respect to the horizontal is larger than the inclination angle of the second inclined surface 57k with respect to the horizontal. Further, the inclination angle of the second inclined surface 57k with respect to the horizontal is the same as the inclination angle of the lower rail portion 25a with respect to the horizontal. The inclined surface may be only the second inclined surface 57j without the first inclined surface 57j.

  Since the first and second inclined surfaces 57j and 57k are formed on the upper surface of the covering portion 57a of the bracket 57 as described above, the height position on the rear side of the covering portion 57a is lowered, as shown in FIG. As described above, even if the tip of the foot 71 of the occupant seated on the rear seat 22 enters between the seat cushion 21a of the front seat 21 and the floor panel 15, the tip of the foot 71 hits the covering portion 57a. It becomes difficult. Further, when the front seat 21 is in the foremost position of the slide movable range, the tip of the foot 71 is highly likely to hit the covering portion 57a. However, when the tip of the foot 71 hits the covering portion 57a, first, It hits one inclined surface 57j and is guided upward by the first inclined surface 57j, so that it does not easily hit the second inclined surface 57k. Moreover, since the upper surface of the rear cross member 17 is inclined upward toward the front side, when the foot 71 is placed on the upper surface of the rear cross member 17, the tip side of the foot 71 faces upward. Also from this point, the tip of the foot 71 is difficult to hit the covering portion 57a.

  In FIG. 5, the second inclined surface 57j is an extended surface of the upper surface of the rear cross member 17 (the portion excluding the rail fixing portion 17a and inclined upward toward the front side as described above). 7, the bracket 57 has at least a part of the inclined surface (second inclined surface 57j in FIG. 7) as the upper surface (rails) of the rear cross member 17 as shown in FIG. The tip portion of the foot 71 placed on the upper surface of the rear cross member 17 is provided so as to be positioned on the extension of the portion excluding the fixing portion 17a and inclined upward toward the front side). In this case, it is substantially along the inclined surface (second inclined surface 57j) located on the extension of the upper surface of the rear cross member 17, and is more difficult to hit by the covering portion 57a. In this case, in particular, the first inclined surface 57j can be eliminated. Here, in FIG. 7, the height position of the upper surface of the rear cross member 17 (excluding the rail fixing portion 17 a) is changed with respect to FIG. 5, but the height position of the bracket 57 is changed. Also good.

  Here, when the front seat 21 is in the foremost position of the slide movable range, the entire power conversion device 50 overlaps with the seat cushion 21a of the front seat 21 in plan view (see FIGS. 2 and 3). ). In the present embodiment, the rear end of the seat cushion 21a located at the foremost position is located at substantially the same position as the rear end of the rear support portion 57c in the front-rear direction, but the rear end of the seat cushion 21a located at the forefront position However, what is necessary is just to be located in the back rather than the rear end of the power converter device main-body part 51. FIG.

  The power conversion device 50 extends to the rear side of the air outlet 32 a of the air conditioning duct 32 below the seat cushion 21 a of the front seat 21. That is, the rear end of the power conversion device 50 is located behind the outlet 32a. And the part by the side of the air-conditioning duct 32 (vehicle width direction inner side) behind the blower outlet 32a in the power converter device 50 is notched on the opposite side (vehicle width direction outer side) from the air-conditioning duct 32 of the vehicle width direction. The notch 50a is formed as follows. The portions corresponding to the notches 50a in the power converter main body 51 (case 51a), the heat sink 52, and the bracket 57 of the power converter 50 are cut out in a triangular shape in plan view. Due to the notch 50a, the surface on the air conditioning duct 32 side of the power conversion device 50 on the rear side of the outlet 32a is inclined toward the rear side opposite to the air conditioning duct (outside in the vehicle width direction). . The notch 50a is for preventing the power conversion device 50 from entering the blowout range of the conditioned air blown from the blowout port 32a to the rear side (the hatched range in FIG. 3). In plan view, a part of the rear support 57c of the bracket 57 overlaps with the air-conditioning air blowing range, but the air-conditioning air blowing range rises upward toward the rear side. The side support part 57c is located below the blowout range of the conditioned air and does not fall within the range.

  The air conditioning duct 32 is not always necessary, and the air conditioning duct 32 can be eliminated. In this case, it is not necessary to provide the notch 50a in the power conversion device 50, and the power conversion device 50 (power conversion device main body 51) can be enlarged to cope with the increase in the storage capacity of the power storage device 43. .

  Therefore, in the present embodiment, the first and second inclined surfaces 57j and 57k that are inclined upward toward the front side on the upper surface of the covering portion 57a of the bracket 57 supported on the upper surfaces of the front cross member 16 and the support member 58. Therefore, the height position of the rear side of the covering portion 57a is lowered, and the tip of the occupant's foot 71 seated on the rear seat 22 is located between the seat cushion 21a of the front seat 21 and the floor panel 15. Even if it enters, the tip of the foot 71 is difficult to hit the covering portion 57a. Further, when the front seat 21 is in the foremost position of the slide movable range, the tip of the foot 71 is highly likely to hit the covering portion 57a. However, when the tip of the foot 71 hits the covering portion 57a, first, It hits one inclined surface 57j and is guided upward by the first inclined surface 57j, so that it does not easily hit the second inclined surface 57k. And the back side of the power converter device 50 can be covered with the part in which the 1st inclined surface 57j in the coating | coated part 57a was formed. As a result, the power conversion device 50 can be protected against the foot contact of the occupant seated on the rear seat 22. In addition, the foot space of the occupant sitting on the rear seat 22 is not limited by the power conversion device 50. Further, the upper side of the power conversion device 50 is basically a portion where the second inclined surface 57k having a gentle inclination is formed in the covering portion 57a. The power conversion device 50 (power conversion device main body 51) can be made as large as possible in order to cope with the conversion.

  Further, since the covering portion 57a of the bracket 57 covers the upper side of the power conversion device 50, the heat of the power conversion device 50 is combined with the dissipation of the heat of the power conversion device 50 by the heat sink 52 to the lower side. It is possible to prevent the passenger from feeling uncomfortable due to the heat.

  The present invention is not limited to the embodiment described above, and can be substituted without departing from the spirit of the claims.

  For example, in the above embodiment, the two inclined surfaces 57j and 57k are formed on the upper surface of the covering portion 57a, but the number of inclined surfaces formed on the upper surface of the covering portion 57a and inclined upward toward the front side is as follows. The number may be one, or three or more inclined surfaces may be arranged in the front-rear direction. When a plurality of inclined surfaces are formed, for example, a horizontal surface may exist between a certain inclined surface and the inclined surface on the front side or the rear side.

  In the above embodiment, the power conversion device 50 including a DC / DC converter is described as an example of the electrical component that generates heat. However, the present invention is not limited thereto, and the power storage device 43 including, for example, a capacitor may be used. The power storage device 43 includes a secondary battery (a secondary battery such as a nickel metal hydride secondary battery, a nickel cadmium secondary battery, a lithium ion secondary battery, or a lead storage battery) that stores electricity in the same manner as the capacitor, instead of the capacitor. It may be a thing. However, the capacitor is preferable because it can quickly input and output electricity to the power storage device 43.

  Furthermore, although the vehicle according to the above embodiment is driven by an engine, it is an electric vehicle in which a motor is disposed in an engine room 3 (also referred to as a motor room) at the front of the vehicle and driven by the motor. It may be a hybrid vehicle using both an engine and a motor. When such a motor is used, a motor driving battery (power supply device) and an inverter unit including an inverter that converts DC power from the motor driving battery into AC power and supplies the motor with power are required. However, the battery for driving the motor or the inverter unit may be disposed between the seat cushion 21a of the front seat 21 and the floor panel 15 as an electrical component that generates heat.

  The above-described embodiments are merely examples, and the scope of the present invention should not be interpreted in a limited manner. The scope of the present invention is defined by the scope of the claims, and all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  INDUSTRIAL APPLICABILITY The present invention is useful for an electric component disposition structure for a vehicle including an electric component that generates heat and is disposed between a seat cushion of a front seat and a floor panel.

DESCRIPTION OF SYMBOLS 15 Floor panel 16 Front cross member 17 Rear cross member 21 Front seat 21a Seat cushion 22 Rear seat 50 Power conversion device (electric component which generates heat)
50a Notch 51 Power converter main unit (electric component main unit)
52 heat sink 57 bracket 57a covering portion 57b front support portion 57c rear support portion 57j first inclined surface 57k second inclined surface

Claims (8)

A floor panel forming the bottom of the vehicle compartment;
A front seat supported on the floor panel so as to be slidable in the vehicle longitudinal direction;
A rear seat disposed on a vehicle rear side of the front seat on the floor panel;
An electrical component that generates heat and is disposed between the seat cushion of the front seat and the floor panel;
A bracket for supporting the electrical component on the floor panel;
The bracket has a covering portion that covers the upper side of the electrical component, and is supported by the floor panel so that an inclined surface that is inclined upward toward the vehicle front side is formed on the upper surface of the covering portion. An electrical component disposition structure for a vehicle, characterized in that In the vehicle electrical component arrangement structure according to claim 1,
A support portion supported by the floor panel is provided at an end of the bracket on the vehicle rear side,
The inclined surface includes a first inclined surface located on the vehicle front side of the support portion, and a second inclined surface located on the vehicle front side of the first inclined surface,
An electrical component disposition structure for a vehicle, wherein an inclination angle of the first inclined surface with respect to the horizontal is larger than an inclination angle of the second inclined surface with respect to the horizontal. In the vehicle electrical component arrangement structure according to claim 1 or 2,
The electrical component disposition structure for a vehicle, wherein the electrical component is supported by the floor panel in a state of being spaced apart from the floor panel by the bracket. In the vehicle electrical component arrangement structure according to claim 3,
The electrical component has an electrical component main body that emits heat, and a heat sink that dissipates heat generated by the electrical component main body,
The electric component disposition structure for a vehicle, wherein the heat sink is disposed below the electric component main body. In the vehicle electrical component arrangement structure according to any one of claims 1 to 4,
An electrical component arrangement for a vehicle, wherein the electrical component as a whole overlaps with a seat cushion of the front seat in a plan view when the front seat is at the foremost position of the slide movable range. Construction. In the electric component arrangement structure for a vehicle according to any one of claims 1 to 5,
A front cross member disposed on the floor panel, positioned on the front side of the electrical component and extending in the vehicle width direction;
The vehicle front side end of the bracket is supported on the upper surface of the front cross member,
An electrical component disposition structure for a vehicle, wherein an end of the bracket on the vehicle rear side is supported by a portion of the floor panel on the vehicle rear side of the electrical component. In the vehicle electrical component arrangement structure according to any one of claims 1 to 6,
A rear cross member disposed on the floor panel, located on the rear side of the electrical component and extending in the vehicle width direction;
An electrical component disposition structure for a vehicle, wherein an upper surface of the rear cross member is inclined upward toward the vehicle front side. In the electric component arrangement structure for a vehicle according to claim 7,
At least a part of the inclined surface is positioned on an extension of the upper surface of the rear cross member.

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