JP6344692B2 - Vehicle floor structure - Google Patents

Description

  The present invention relates to a vehicle floor structure in which a blower unit for cooling a battery unit is disposed on a floor portion.

  Conventionally, various hybrid vehicles, electric vehicles, and the like have been proposed in which a battery is mounted under the floor of the vehicle floor. For example, Patent Document 1 proposes a vehicle battery mounting structure that is provided under a vehicle floor and supports a battery on a battery frame.

  Patent Document 2 proposes a vehicle-mounted structure of a high-voltage device component in which a high-voltage device component such as a battery is disposed in a storage recess formed in a vehicle body floor. In the in-vehicle structure of Patent Document 2, the high-pressure device component can be cooled, and a fan unit for generating cooling air is disposed around the high-pressure device component in the housing recess to support the high-pressure device component. And it is being fixed to the division | segmentation cross member via the bracket.

JP 2012-071764 A Japanese Patent Application No. 2004-345453

  However, in such a conventional vehicle floor structure, when an air cooling unit such as a fan unit for cooling the battery is mounted, the air cooling unit must be attached to the battery frame or sub-assembly frame in which the battery is accommodated. In other words, it took time to assemble and it was not easy to shorten the assembling time.

  In addition, since the air cooling unit is fixed to the sub-assembly frame or the divided cross member, the opening on the vehicle compartment side is closed by a floor board such as a lid so that the vehicle compartment floor surface is formed. When a load is applied from the side and the floor board is bent or deformed, the floor board and the air-cooling unit may interfere with each other, resulting in problems. Therefore, it is necessary to provide an interval between the floor board and the air cooling unit so that the two do not interfere with each other even if the deformation occurs, and the space in the height direction is wasted.

  Therefore, an object of the present invention is to provide a vehicle floor structure capable of saving space in the height direction and shortening assembly time.

In order to achieve the above object, the present invention provides a vehicle floor structure in which a blower unit for cooling a battery unit mounted on a floor portion is disposed between a floor panel and a floor board above the floor panel. When the battery unit is disposed on the floor panel, the blower of the blower unit is mounted on the back surface of the floor board, and the floor board covers the upper part of the battery unit, the discharge air from the blower is discharged. An introduction duct for leading to the battery unit is disposed toward the gap between the floor panel and the battery unit.
Further, the present invention is a vehicle floor structure in which a blower unit for cooling a battery unit mounted on a floor portion is disposed between a floor panel and a floor board above the floor panel, and the blower unit The blower unit is mounted on the back surface of the floor board in front of the seat, and the blower unit includes a blower cover that covers the lower surface of the blower and is spaced from the floor panel.

  In the vehicle floor structure, the floor panel has a floor tunnel, the battery unit is disposed on one side through the floor tunnel, the blower unit is disposed on the other side, and discharge air from the blower is generated. An introduction duct for leading to the battery unit is disposed on the floor tunnel.

In the floor structure of the vehicle, the floor board, to form a flat cabin floor continuously.

  According to the present invention, since the blower of the blower unit is mounted on the back surface of the floor board, the floor board can be assembled to the vehicle body by mounting the blower on the back surface of the floor board in advance, for example, when manufacturing the vehicle body. It is possible to shorten the assembling time on the assembling line.

  When the blower of the blower unit is mounted at a position facing the blower on the back surface of the floor board, the blower can be displaced together with the floor board when a load is applied and the floor board is bent or deformed. Therefore, the interference between the floor board and the blower can be prevented without providing a large gap between them, and as a result, the arrangement space of the blower unit in the vehicle height direction can be reduced. Therefore, it is possible to provide a vehicle floor structure capable of saving space in the height direction and shortening the assembly time.

1 is a perspective view showing a part of a passenger compartment with a floor carpet and a front seat removed, for a vehicle to which a floor structure according to an embodiment of the present invention is applied. 1 is a schematic partial side sectional view of a vehicle to which a floor structure according to an embodiment of the invention is applied. It is a schematic plan view which shows the state which removed the floor board in a part of vehicle compartment shown in FIG. It is AA sectional drawing of FIG. It is a bottom view which shows the blower unit of the floor structure which concerns on embodiment of this invention. It is a disassembled perspective view which shows the blower unit of the floor structure which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Below, the form which applied this invention to the hybrid vehicle is demonstrated. As shown in FIGS. 1 to 3, a vehicle body is provided with a battery unit 20 and a blower unit 30 for cooling the battery unit 20 between a front seat 11 and a rear seat 12 in the floor portion 10. ing.

  In the floor portion 10, a pair of rockers 13 are provided on both sides in the vehicle width direction, a floor panel 14 is disposed between the rockers 13 in a predetermined shape, and a floor tunnel 15 extending in the vehicle front-rear direction is provided in the center. The floor tunnel 15 gradually decreases in height toward the rear. Further, a plurality of cross members 16 extending in the vehicle width direction are provided between the rockers 13 and the floor tunnel 15 so as to be separated from each other in the front-rear direction, and pillars 17 are erected upward from the respective rockers 13. Yes.

  The front seat 11 and the rear seat 12 are respectively attached to the reinforcing structure portion of the floor panel 14, the cross member 16, and the like by leg portions 18 that are spaced apart from each other in the vehicle width direction. It is arranged away from the passenger compartment floor.

  As shown in FIGS. 3 and 4, the battery unit 20 and the blower unit 30 are provided on both sides via the floor tunnel 15, the battery unit 20 is disposed on one side, and the blower unit 30 is disposed on the other side. Has been.

  The battery unit 20 and the blower unit 30 are accommodated in a concave portion 19 formed by the floor panel 14 so as to open upward at a position between the front and rear cross members 16. Each concave-shaped part 19 has a shape corresponding to the shape on the lower surface side of the battery unit 20 or the blower unit 30 to be accommodated.

  Each concave-shaped portion 19 formed by the floor panel 14 is covered with a floor board 40 in a state where the battery unit 20 and the blower unit 30 are accommodated, respectively. Thus, the battery unit 20 and the blower unit 30 are disposed between the floor panel 14 and the floor board 40 above the floor panel 14, respectively. In this embodiment, the entire passenger compartment floor surface between the front seat 11 and the rear seat 12 is formed by the surfaces of the plurality of floor boards 40.

  The battery unit 20 is a battery case in which a chargeable / dischargeable storage battery is accommodated in a battery case, and has a structure in which the inside of the battery case can be ventilated. The battery unit 20 is supported and fixed at a portion having sufficient support strength such as a support portion provided in the concave portion 19 of the floor panel 14 and is electrically connected to various devices. The floor board 40 a covering the upper part of the battery unit 20 is supported and fixed to a stepped portion or a pedestal provided on the floor panel 14 around the recessed portion 19.

  In the battery unit 20 and the recessed portion 19, a flow path is provided for cooling and introducing the cooling air introduced from the blower unit 30 while efficiently cooling the air. Further, a discharge path (not shown) is provided for discharging the air after heat exchange from the flow path of the battery unit 20 and the concave shaped portion 19 to the outside of the vehicle.

  As shown in FIGS. 5 and 6, the blower unit 30 is attached to the back surface of the floor board 40b. The blower unit 30 is connected to the blower 31, the intake duct 32 that opens into the vehicle interior and is connected to the blower 31, and is connected to the blower 31 to guide the discharge air from the blower 31 to the inside of the concave portion 19 and the battery unit 20. , An intake duct 32, a blower 31, and a blower cover 34 that covers the lower surface side of the introduction duct 33. The blower cover 34 is provided at a distance from the floor panel 14. Since the blower unit 30 is not assembled to the floor panel 14 and the blower 31 is mounted on the back surface of the floor board 40, the floor board 40 is hardly bent or deformed regardless of the bending or deformation of the floor panel 14. Due to the deformation, the blower unit 30 is displaced together with the floor board 40.

  The blower 31 is composed of a sirocco fan or the like that feeds air by rotating fins by a blower motor 31a. The blower 31 is fastened and fixed with a leg portion 31b protruding from the blower motor 31a to a mounting seat or the like provided at a position facing the leg portion 31b on the back surface of the floor board 40b.

  The intake duct 32 includes an air intake port 32a provided below the seat cushion of the front seat 11 so as to protrude into the vehicle interior, and an intake duct body 32b communicating between the air intake port 32a and the blower 31. Yes. The air intake duct 32 is fixed by connecting the air intake duct body 32b to the air intake portion 31c of the blower 31, and fastening a mounting piece 32c provided projecting outside the air intake duct main body 32b to an opposing position on the back surface of the floor board 40b. Has been. In this embodiment, the air intake 32a is further locked to the floor panel 14.

  The air intake port 32a is disposed so as to protrude into the vehicle compartment at a position between the leg portions 18 of the passenger front seat 11 and, in particular, between a pair of left and right seat rails provided in the vehicle longitudinal direction.

  As shown in FIGS. 1 and 3, the introduction duct 33 is arranged so as to be bridged from the discharge part 31 d of the blower 31 to the battery unit 20 via the floor tunnel 15, and to the discharge part 31 d of the blower 31. It is fixed by being connected. The introduction duct 33 is formed in a flat shape in which the width in the floor tunnel 15 and the battery unit 20 is increased and the thickness in the vertical direction is reduced.

  The blower cover 34 has a shape that roughly corresponds to the shape of the lower surface side of the intake duct body 32b, the blower 31, and the introduction duct 33, covers these so as to be supported from below, and is fixed to the back surface of the floor board 40b. Yes.

  According to such a blower unit 30, the temperature-adjusted air in the passenger compartment is sucked from the air intake port 32 a of the intake duct 32 and blown by the blower 31, and the concave portion 19 and the battery unit 20 are sent from the introduction duct 33. To be introduced. Then, cooling air flows and exchanges heat according to the concave portion 19 and the flow path provided in the battery unit 20, and this air flows down from the battery unit 20 to an exhaust passage (not shown) and is released outside the vehicle. As a result, the internal heat is dissipated.

  In this embodiment, the blower 31 of such a blower unit 30 is mounted at a facing position on the back surface of the floor board 40b, and substantially the entire upper portion except the air intake port 32a of the intake duct 32 is covered by the floor board 40b. It has been broken.

  These floor boards 40 b together with the floor board 40 a covering the battery unit 20 constitute a vehicle compartment floor surface between the front seat 11 and the rear seat 12. In the present embodiment, the floor board 40b that covers the introduction duct 33 and the floor board 40b that covers other parts are separate members, and each constitutes a vehicle compartment floor. In the present embodiment, the entire passenger compartment floor formed by the plurality of floor boards 40 is not provided with undulations on the passenger compartment side, and a flat passenger compartment floor continuous in the vehicle width direction is formed. .

  Since these floor boards 40 are floor surfaces on which the occupant steps and moves, the floor boards 40 are formed so as to ensure sufficient strength as the occupant's movement and footrest in a state of being laid between the floor panels 14. Here, a plurality of reinforcements 41 extending in the vehicle front-rear direction are provided on the back surface of the floor board 40.

  Thus, according to the vehicle floor structure according to the embodiment of the present invention, the blower 31 is mounted on the back surface of the floor board 40. Therefore, when the vehicle body is manufactured, the floor board 40 can be assembled to the vehicle body with the blower 31 mounted in advance, and the assembly time on the assembly line can be shortened.

  The blower 31 of the blower unit 30 is mounted on the back surface of the floor board 40 at a position facing the blower 31. Therefore, when the load is applied and the floor board 40 is bent or deformed, the blower 31 can be displaced together with the floor board 40. Therefore, even if a large gap is not provided between the floor board 40 and the blower 31, it is possible to prevent the interference between the two, and as a result, it is possible to reduce the arrangement space of the blower unit 30 in the vehicle height direction. is there. Therefore, space saving in the height direction and shortening of the assembly time can be achieved.

  Further, in the vehicle floor structure according to the embodiment of the present invention, the battery unit 20 is disposed on one side through the floor tunnel 15, the blower unit 30 is disposed on the other side, and the introduction duct 33 is disposed on the floor tunnel 15. Has been placed. Therefore, even if the battery unit 20 and the blower unit 30 are disposed on the floor panel 14, the floor tunnel 15 can be provided on the floor panel 14, and sufficient strength of the vehicle body can be obtained without providing a special reinforcing structure. It is possible to secure.

  Further, in the vehicle floor structure according to the embodiment of the present invention, the battery unit 20 is disposed on the floor panel 14, and the floor board 40 covers the upper part of the blower unit 30 and the upper part of the battery unit 20 so as to be continuous and flat. Since the passenger compartment floor is formed, the convenience of the passenger compartment floor is good.

  Further, in the vehicle floor structure according to the embodiment of the present invention, the floor panel 14 that forms a continuous and flat passenger compartment floor surface is disposed between the front seat 11 and the rear seat 12. It is easy for passengers to get on and off.

  The embodiment of the present invention is not limited to the illustrated form, and includes a form appropriately changed within the scope of the present invention. For example, in the above-described embodiment, an example in which the vehicle compartment floor surface is flat in the vehicle width direction overall length has been described. However, the embodiment is not particularly limited, and the vehicle compartment floor formed by the floor board 40 on the left and right sides of the floor tunnel 15 respectively. A surface may be provided, and the portion of the floor tunnel 15 may protrude upward from the vehicle compartment floor on both sides.

  Moreover, although the said embodiment demonstrated the example which has arrange | positioned the battery unit 20 on the upper side of the floor panel 14, you may mount | wear with the lower side of the floor panel 14. FIG.

DESCRIPTION OF SYMBOLS 10 Floor part 11 Front seat 12 Rear seat 13 Rocker 14 Floor panel 15 Floor tunnel 16 Cross member 17 Pillar 18 Leg part 19 Recessed part 20 Battery unit 30 Blower unit 31 Blower 31a Blower motor 31b Leg part 31c Intake part 31d Discharge part 32 Intake duct 32a Air intake port 32b Intake duct body 32c Mounting piece 33 Introduction duct 34 Blower cover 40, 40a, 40b Floor board 41 Reinforcement

Claims (4)

A blower unit for cooling a battery unit mounted on a floor portion is a vehicle floor structure disposed between a floor panel and a floor board above the floor panel,
The battery unit is disposed on the floor panel;
A blower of the blower unit is mounted on the back surface of the floor board,
When the floor board covers the upper part of the battery unit, an introduction duct for guiding the discharge air from the blower to the battery unit is arranged toward the gap between the floor board and the battery unit. Construction. A blower unit for cooling a battery unit mounted on a floor portion is a vehicle floor structure disposed between a floor panel and a floor board above the floor panel,
The blower of the blower unit is attached to the back of the floor board in front of the seat ,
The blower unit includes a blower cover that covers a lower surface of the blower and is spaced from the floor panel . The floor panel has a floor tunnel, the battery unit is arranged on one side through the floor tunnel, and the blower unit is arranged on the other side,
The vehicle floor structure according to claim 1 , wherein the introduction duct is disposed on the floor tunnel. The floor board, to form a flat cabin floor continuously, the vehicle floor structure according to any one of claims 1 to 3.

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