JP6115066B2 - Mounting structure of electric unit for vehicle - Google Patents

Description

  The present invention relates to a mounting structure for an electric unit for a vehicle.

  Patent Document 1 discloses a structure in which an electric unit is mounted on a floor panel surface of a luggage space behind a vehicle seat.

JP 2005-132348 A

  When the electric unit is mounted on the floor panel surface of the luggage space behind the seat as disclosed in Patent Document 1, there is a problem that the load space is reduced or the vehicle size is increased to secure the load space. .

  Therefore, the present invention provides a mounting structure for an electric unit for a vehicle in which the electric unit can be mounted under a high guard without reducing the luggage space of the vehicle or increasing the vehicle size for securing the cargo space. It is.

In the vehicle electric unit mounting structure according to the present invention, the front seat fixing member and the rear seat fixing member are disposed on the upper surface of the region stiffened by the side member and the suspension member disposed on the lower surface side of the floor panel . A seat fixing member extends in the vehicle width direction .

The upper surface of the region stiffened by the side member and the suspension member disposed on the lower surface side of the floor panel by joining the seat frame across the front seat fixing member and the rear seat fixing member. The main feature is that a space portion surrounded by a front seat fixing member, a rear seat fixing member, a seat frame, and a floor panel is formed on the side, and an electric unit is mounted in the space portion.

  According to the present invention, since the electric unit is mounted in the space set below the vehicle seat, the luggage space behind the seat is not reduced.

  In addition, the electric unit has an arrangement structure that is surrounded by the strength members of the seat frame, the seat fixing member, the side member, and the suspension member in the vertical direction, the front-rear direction, and the vehicle width direction. Thereby, it is possible to prevent the electric unit from being firmly guarded by each of these strength members and being damaged against crushing deformation of the vehicle body at the time of a vehicle collision or the like.

The perspective explanatory view showing one embodiment of the present invention. Plane explanatory drawing which shows one Embodiment of this invention. The bottom explanatory view showing one embodiment of the present invention. The rear explanatory view showing one embodiment of the present invention. Cross-sectional explanatory drawing which shows one Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS Schematic side explanatory drawing which shows the example which applied one Embodiment of this invention to 3rd sheet | seat of a 3 row sheet | seat. FIG. 7 is a schematic side view illustrating a comparative example of the usage example illustrated in FIG. 6.

  Hereinafter, a battery unit used in a hybrid vehicle or an electric vehicle will be described as an example with a battery unit as an embodiment of the present invention, and will be described in detail with reference to the drawings.

  The floor panel 1 shown in FIGS. 1 to 4 has a side member 2 extending in the front-rear direction of the vehicle body joined and disposed on the lower surfaces of both sides in the vehicle width direction.

  The side member 2 is formed in a substantially hat-shaped cross section, and a flange edge on the open side of the cross section is joined to the lower surface of the floor panel 1 to form a closed cross section that is advantageous in strength.

  As shown in FIG. 3, in this embodiment, the rear wheel suspension member 5 is provided with a pair of front and rear crosses extending in the vehicle width direction between the left and right side members 2 and 2. Members 3 and 4 are joined and arranged.

  The cross members 3 and 4 are also formed in a substantially hat-shaped cross section like the side members 2, and the flange edge on the open side of the cross section is joined to the lower surface of the floor panel 1 to form a closed cross section that is advantageous in strength. (See FIG. 5).

  The suspension member 5 is formed in the shape of a substantially parallel girder plane, and a pair of front arm portions 6 are coupled to the lower surfaces of the left and right side members 2 in front of the front cross member 3 and a pair of rear arm portions 7 are connected to the rear side. The cross member 4 is coupled to the lower surface of the end portion continuous with the side member 2.

  On the upper surface of the region stiffened by the side member 2, the cross members 3, 4 and the suspension member 5 of the floor panel 1, front and rear seat fixing members 8, 9 are arranged.

  In this embodiment, each of the seat fixing members 8 and 9 is configured as a horizontally long bar extending in the vehicle width direction and having both end portions on the portion corresponding to the arrangement of the side member 2.

  The front seat fixing member 8 is formed in a small, substantially hat-shaped cross section, and the flange edge on the open side of the cross section is joined to the upper surface of the floor panel 1 to form a closed cross section that is advantageous in strength. (See FIG. 5).

  The rear seat fixing member 9 is made of a round pipe steel material, and is coupled to the upper surface of the floor panel 1 via brackets 10 provided at both end portions, and is disposed at a required height position described later. .

  A plurality of fastening seats 9a for fixing a seat leg 13 on the rear side of a seat frame 11, which will be described later, are protruded upward at a required portion of the rear seat fixing member 9 made of a round pipe steel material.

  The seat frame 11 is joined across the front and rear seat fixing members 8 and 9.

Thereby, the strength members of the seat fixing members 8 and 9 and the seat frame 11 on the surface of the floor panel 1, and the lower surface side are surrounded by the strength members of the side member 2, the cross members 3 and 4, and the suspension member 5. The space portion 20 is formed, and a battery unit 30 as an electric unit is mounted thereon.

  The seat frame 11 includes a front frame 11a made of a round pipe steel material, a side frame 11b joined to ends bent backward on both sides thereof, a center frame 11c joined to a center portion in the width direction of the front frame 11a, and frames 11b and 11c. And reinforcing bars 11d before and after connecting the two in the vehicle width direction.

  While a pair of left and right seat legs 12 are joined to the front frame 11a, seat legs 13 are joined to both the rear end portions of the left and right side frames 11b and the rear end portions of the center frame 11c.

  Then, the engaging portion 12a bent in a substantially L shape at the lower end of the front seat leg 12 is engaged with the upper surface and the front surface of the front seat fixing member 8 to be bolted from the front side, and the rear side The seat leg 13 is fixed on the fastening seat 9a of the rear seat fixing member 9 and bolted from the upper surface side.

  Accordingly, the battery unit 30 is stored between the floor panel 1 and the seat frame 11 by the seat fixing members 8 and 9 and the seat legs 12 and 13 as shown in FIGS. The space 20 having a sufficient height is secured.

  Here, the rear seat fixing member 9 is set to a height position overlapping the battery unit 30 mounted in the space 20 as viewed from the rear as shown in FIG. In FIG. 4, the suspension member 5 is omitted for convenience.

  The battery unit 30 includes a battery main body 31 configured by housing an assembled battery in a housing 32, and a cooling duct 33 for air cooling disposed in the housing 32. Of the cooling duct 33, the air supply duct 33a extends in the vehicle width direction on the vehicle front side surface of the housing 32 as shown in FIGS. 1 and 2, and the exhaust duct 33b is on the vehicle rear side of the housing 32. Is extended and arranged in the vehicle width direction. In FIG. 2, the exhaust duct 33b is omitted for convenience. Moreover, in FIG. 5, the code | symbol S has shown the vehicle seat provided with the above-mentioned seat frame 11, and D has shown the seated passenger.

  According to the present embodiment configured as described above, the battery unit 30 as an electric unit is mounted in the space portion 20 surrounded by the rigid structure below the vehicle seat S as described above.

Therefore, for example, when applied to the 3rd seat S3 of the vehicle V of the three-row seat specification equipped with the 1st seat S1, the 2nd seat S2, and the 3rd seat S3 shown in FIG. 6, the luggage space behind the 3rd seat S3 is narrowed. There is no.

  As in the comparative example shown in FIG. 7, it is possible to configure the above-described space portion 20 below the 2nd sheet S2 and mount the battery unit 30 therein. In this case, It is necessary to make the floor ground height high so that the rear of the battery unit 30 can be guarded. For this reason, the heel landing height of the foot of the seated occupant D of the 3rd seat S3 becomes high, the leg posture becomes cramped, and there is a possibility that the comfort is lacking.

On the other hand, in the usage example shown in FIG. 6, the above-described space portion 20 is configured by lowering the floor ground height of the portion corresponding to the arrangement of the 3rd seat S3 to thereby determine the head position of the seated occupant D of the 3rd seat S3. The battery unit 30 can be mounted without changing from the comparative example of FIG. As a result, it is possible to secure a living space around the occupant's feet of the 3rd seat S3, and to ensure the ability to insert into the gap below the 2nd seat S2, and to obtain a comfortable sitting posture by extending the legs.

  Further, as described above, according to the present embodiment, the battery unit 30 includes the seat frame 11, the seat fixing members 8 and 9, the side member 2 on the lower surface side of the floor panel 1, and the cross member. 3, 4 and the suspension member 5 and other strength members surround and guard from the vertical direction, the front-rear direction, and the vehicle width direction.

  Thereby, it is possible to prevent the battery unit 30 from being firmly protected and damaged by the above-described strength members against the crushing deformation of the vehicle body at the time of a rear collision or a side collision of the vehicle. As a result, the casing 32 of the battery main body 31 does not need to have a rigid structure more than necessary as a countermeasure against collision, so that the weight of the battery main body 31 can be reduced.

  In addition, the battery unit 30 includes an air supply duct 33 a and an exhaust duct 33 b of the cooling duct 33 that extend in the vehicle width direction on the front and rear sides of the battery body 31 and are mounted in the space portion 20.

  Thereby, even if the seat fixing members 8 and 9 are deformed in the vehicle front-rear direction in the event of a vehicle collision or the battery body 31 is displaced in the vehicle front-rear direction, the cooling duct 33 avoids mutual interference. In addition, the cooling duct 33 functions as a cushioning material, and the battery body 31 can be protected.

  Further, the seat frame 11 includes seat legs 12 and 13, and these seat legs 12 and 13 are placed on the seat placement members 8 and 9 disposed at a required height on the surface of the floor panel 1 and fixedly coupled. It is. As a result, the seat fixing members 8 and 9 and the seat legs 12 and 13 can secure a space portion 20 having a required height below the seat frame 11, and the battery unit 30 described above can be placed in the space portion 20. As a starting point, it is possible to mount and store other somewhat bulky electrical units.

  The rear seat fixing member 9 is set at a height position overlapping the battery unit 30 when viewed from the rear. As a result, even when the loaded luggage in the luggage room moves forward in the event of a front or rear collision, the seat fixing member 9 functions as a protector even when the vehicle body panel is deformed and moved forward behind the space 20. Thus, direct interference with the battery unit 30 can be avoided and protected.

  In the said embodiment, although the battery unit was illustrated as the electric unit 30, it can apply to mounting of another electric unit and can acquire the same effect.

  Further, since the space portion 20 on the lower side of the seat frame 11 can secure a considerably wide space in the vehicle front-rear direction and the vehicle width direction, the auxiliary devices are stored side by side along the periphery of the electric unit 30. Therefore, it is possible to avoid the electric unit 30 from becoming bulky.

  Further, in the above-described embodiment, the seat fixing members 8 and 9 are each configured as a horizontally long series structure, but may be configured to have a plurality of configurations that are separated and independent according to the set number of seat legs 12 and 13. Is possible.

DESCRIPTION OF SYMBOLS 1 ... Floor panel 2 ... Side member 3, 4 ... Cross member 5 ... Suspension member 8, 9 ... Seat fixing member 11 ... Seat frame 12, 13 ... Seat leg 20 ... Space part 30 ... Battery unit (electric unit)
31 ... Battery body 32 ... Case 33 ... Cooling duct V ... Vehicle S ... Vehicle seat S3 ... 3rd seat

Claims (6)

On the upper surface of the region stiffened by the side member and suspension member arranged on the lower surface side of the floor panel, the front seat fixing member and the rear seat fixing member are arranged extending in the vehicle width direction. And
A seat frame is joined across the front seat fixing member and the rear seat fixing member,
On the upper surface side of the region stiffened by the side member and the suspension member disposed on the lower surface side of the floor panel, the front seat fixing member, the rear seat fixing member, and the seat frame, Forming a space surrounded by the floor panel;
An electric unit mounting structure for a vehicle, wherein an electric unit is mounted in the space.   The mounting structure for an electric unit for a vehicle according to claim 1, wherein the seat frame includes a seat leg and is coupled to the seat fixing member via the seat leg.   2. The battery unit comprising: a battery main body configured by housing an assembled battery in a housing; and a cooling duct for air cooling disposed in the housing. The mounting structure of the electric unit for vehicles according to 2.   The mounting structure for an electric unit for a vehicle according to claim 3, wherein the cooling duct is disposed so as to extend in a vehicle width direction on a side surface on the front side of the vehicle and a side surface on the rear side of the vehicle.   One of the seat fixing members is arranged to extend in the vehicle width direction on the vehicle rear side of the electric unit, and the seat fixing member is set at a height position overlapping the electric unit when viewed from the rear. The mounting structure for an electric unit for a vehicle according to any one of claims 1 to 4. The mounting structure for an electric unit for a vehicle according to any one of claims 1 to 5, wherein a space for mounting the electric unit is set below a 3rd seat in a three-row seat.

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