JP2014125097A - Floor structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent damage of a battery during a side impact crash, in a vehicle whose plug for maintenance of the battery is disposed in a console box.SOLUTION: In a floor structure of a vehicle according to the present invention, a battery E is stored under a floor, a plug Em for maintenance of the battery E protrudes inside a cabin from a floor surface opening 22e formed between left and right seats 51, 52 in the cabin, and the floor surface opening 22e is blocked by a cover member 30 for covering a protruding part of the plug Em for maintenance, from the inside of the cabin. The cover member 30 is disposed between seat rods 51r, 52r of the left and right seats 51, 52, and is configured such that it receives a side impact load applied through the seat rod 52r of one seat 52, and can transmit the side impact load to the seat rod 51r of the other seat 51, without applying the load on the plug Em for maintenance.

Description

  The present invention relates to a vehicle floor structure in which a battery used for driving a vehicle is stored under the floor.

A technique related to a vehicle floor structure is described in Patent Document 1.
In the vehicle described in Patent Document 1, as shown in FIG. 6, a central hill portion 102 extending in the vehicle front-rear direction is formed at the center position in the vehicle width direction of the floor panel 100 constituting the floor surface of the passenger compartment. A console box 104 having an article storage unit (not shown) and the like is installed on the central plateau 102. Further, a load transmission body 106 is provided on the inner side of the console box 104 below the item storage unit (not shown).
The load transmission body 106 is configured to be able to transmit a collision load between a seat rod 107 provided on a driver seat (not shown) and a seat rod 108 provided on a passenger seat (not shown). . For example, when a collision load is applied to the vehicle from the left side surface, the collision load is applied from the left center pillar (B pillar) (not shown) to the seat rod 108 of the passenger seat, and the load transmitting body 106 and the driver seat. This is added to the right center pillar (not shown) via the seat rod 107. Thereby, when the collision load is applied to the vehicle from the left side surface, the amount of the left center pillar entering the vehicle interior can be reduced.

JP 2009-126332 A

For example, in a vehicle using a large battery such as an electric vehicle or a fuel cell vehicle, the battery is stored at a position behind the floor panel 100 (under the floor) and in a plane overlapping the driver seat and the passenger seat. Is preferably performed. In this case, an opening is formed in the protrusion 102 of the floor panel 100, and the maintenance plug of the battery is projected from the opening to the indoor side (inside the console box). The projecting portion of the maintenance plug is covered with a cap-shaped cover member, and the opening is covered with the cover member.
That is, a battery maintenance plug and a cover member that covers the protruding portion of the maintenance plug are disposed at the position of the load transmission body 106 of Patent Document 1.
For this reason, for example, when the vehicle is subjected to a side collision, a collision load is applied to the cover member from the seat rod 107 of the driver seat or the seat rod 108 of the passenger seat, and is applied to the maintenance plug via the cover member. It becomes like this. As a result, the battery may be damaged, and liquid leakage, gas leakage, or the like may occur.

  The present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is that the battery maintenance plug of the battery is arranged in the console box in the case of a side collision in a vehicle. It is to be able to prevent damage.

The above-described problems are solved by the inventions of the claims.
According to the first aspect of the present invention, a vehicle driving battery is stored under the floor, and a maintenance plug for the battery protrudes indoors from a floor surface opening formed between left and right seats in the vehicle interior. A floor structure of a vehicle having a structure in which a surface opening is closed by a cover member that covers a protruding portion of the maintenance plug from the indoor side, wherein the cover member is formed to extend in the vehicle width direction. The cover member receives a side collision load applied via the seat rod of one sheet, and the sheet of the other sheet is applied without applying the side collision load to the maintenance plug. It is configured to be able to transmit to the rod.

According to the present invention, the cover member that covers the protruding portion on the indoor side of the battery maintenance plug receives a collision load applied to the seat rod of one seat from the axial direction, and the side collision load is applied to the maintenance plug. It is configured to be able to transmit to the seat rod of the other seat without adding.
For this reason, the collision load is not applied to the battery maintenance plug, and the battery can be prevented from being damaged at the time of a side collision of the vehicle.

According to the invention of claim 2, the cover member is provided with a load receiving rod configured to extend in the vehicle width direction so as to receive a side collision load from one seat rod and transmit it to the other seat rod. It is characterized by.
Thus, since it is the structure which receives a collision load with a load receiving rod, the intensity | strength of a cover member can be restrained and cost reduction can be aimed at. Furthermore, since the load receiving rod can be gripped when the cover member is attached and detached, the workability of attaching and removing the cover member is improved.

According to the invention of claim 3, the cover member is provided with a plurality of load receiving rods arranged in the vehicle longitudinal direction, and one end of the load receiving rods is connected to each other by the flat plate extending in the vehicle longitudinal direction. The other ends of the load receiving rods are connected to each other by a flat plate extending in the vehicle longitudinal direction.
For this reason, the load receiving surface of the cover member can be lengthened in the vehicle front-rear direction. Therefore, even if the position of the seat rod and the cover member is slightly shifted in the vehicle longitudinal direction, the collision load can be transmitted from one seat rod to the other seat rod via the load receiving rod and the flat plate.

  According to the present invention, in a vehicle having a configuration in which a battery maintenance plug is disposed in a console box, the battery can be prevented from being damaged at the time of a side collision.

It is the rear view of the part of the front row seat (driver's seat sheet, front passenger seat) of vehicles provided with the floor part structure concerning Embodiment 1 of the present invention, and a schematic sectional view of a floor part. It is an II arrow enlarged view of FIG. It is a model perspective view of the floor panel used for the floor part structure of the vehicle concerning this embodiment. It is a whole perspective view of the cover member used for the floor structure of the vehicles. It is a longitudinal cross-sectional view (VV arrow sectional drawing of FIG. 4) of the said cover member. It is a longitudinal cross-sectional view showing the floor part structure of the conventional vehicle.

[Embodiment 1]
Hereinafter, the vehicle floor structure according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5.
Note that the front, rear, left, right, and top and bottom in the figure correspond to the front, back, left, right, and top and bottom of a vehicle having the floor structure.

<Overview of vehicle floor structure>
As shown in FIGS. 1 and 2, floor side members 14 extending in the vehicle front-rear direction on both sides in the vehicle width direction (left and right sides) are provided below the passenger compartment floor of the vehicle 10. A cross member (not shown) extending in the vehicle width direction is handed over. In addition, left and right rocker rails 18 that support A pillars, B pillars, C pillars, and the like (not shown) that extend from the left and right floor side members 14 extend in the vehicle front-rear direction. Is provided.
A floor panel 20 is fixed on the floor side member 14 and the cross member (not shown), and left and right rockers with the left and right edges 20f of the floor panel 20 folded upward. The rails 18 are respectively fixed to the side surfaces.
Further, as shown in FIG. 2, a plurality of gussets 19 for preventing the rocker rail 18 from falling into the passenger compartment are installed on the floor panel 20 in the vehicle front-rear direction.

As shown in FIGS. 2, 3, and the like, the floor panel 20 includes a raised portion 22 formed in a substantially trapezoidal cross section at the vehicle width direction inner side position of the left and right floor side members 14. The raised portion 22 is formed in a rectangular shape that is long to the left and right, and is configured so that the fuel cell stack E can be stored in the downwardly recessed portion 21 on the back surface side from below.
The fuel cell stack E is a battery used for driving the vehicle 10, and is supported from below by support members 14x fixed to the left and right floor side members 14. Further, as shown in FIG. 1 and the like, a maintenance plug Em for cutting off the current of the fuel cell stack E is provided at the center of the upper surface of the fuel cell stack E so as to protrude upward.
At the center position in the vehicle width direction of the raised portion 22 of the floor panel 20, a central elevated portion 22h having an inverted U-shaped cross section in which the console box 40 (see FIG. 2) and the like are installed is formed so as to extend in the vehicle front-rear direction. . A floor surface opening 22e through which the maintenance plug Em of the fuel cell stack E is passed is formed at a position substantially in the center of the central hill 22h and covered with the console box 40.
The floor surface opening 22e of the floor panel 20 is closed by a cover member 30 (described later) that covers the protruding portion of the maintenance plug Em of the fuel cell stack E.

On the floor panel 20, left and right floor cross members 25 extending in the vehicle width direction are passed between the central elevated portion 22 h of the raised portion 22 and the left and right rocker rails 18. And the driver's seat 51 is installed on the raised part 22 located on the right side with respect to the central elevated part 22h and the floor cross member 25 on the right side, and the raised part 22 located on the left side with respect to the central elevated part 22h. A passenger seat 52 is installed on the floor cross member 25 on the left side.
Seat rods 51r and 52r extending in the vehicle width direction are provided inside the seat cushion 51c of the driver seat 51 and the seat cushion 52c of the passenger seat 52. The seat rod 51r of the driver seat 51 and the seat rod 52r of the passenger seat 52 are positioned at substantially the same height, and the cover member 30 in the console box 40 is disposed between the seat rods 51r and 52r. It has become so.

<About the cover member 30>
The cover member 30 closes the floor opening 22e of the floor panel 20 in a state where the protruding portion of the maintenance plug Em of the fuel cell stack E is covered from the indoor side, and also the seat rod 51r of the driver seat 51 and the passenger seat 52. This is a member for transmitting a collision load between the seat rods 52r.
As shown in FIGS. 4 and 5, the cover member 30 includes a cover main body portion 31 and a load receiving portion 36. The cover body 31 is formed in a hat shape that is long in the front-rear direction, and a flange portion 31 f is provided on the opening periphery of the cover body 31. And it is comprised so that the flange part 31f of the cover main-body part 31 may overlap with the peripheral part of the floor surface opening 22e of the floor panel 20. FIG. Also, bolt holes 31b for bolting the flange 31f to the peripheral edge of the floor opening 22e of the floor panel 20 are formed on the front, rear, left and right of the flange 31f of the cover body 31. Further, as shown in FIG. 5, a seal member 32 that seals between the cover main body 31 and the floor opening 22 e of the floor panel 20 is fixed to the lower surface side of the flange portion 31 f of the cover main body 31.

As shown in FIGS. 4 and 5, a pair of bearing portions 33 are provided before and after the upper surface 31 u of the cover main body portion 31 so that the shaft center extends in the left-right direction. The load receiving rod 37 of the load receiving portion 36 is fixed to the pair of bearing portions 33 in a state where the load receiving rod 37 is passed therethrough. Here, the height position of the load receiving rod 37 is such that the flange 31f of the cover main body 31 is bolted to the peripheral edge of the floor opening 22e of the floor panel 20 and the driver seat 51 and the passenger seat 52. The seat rods 51r and 52c are set to have substantially the same height position.
The length dimensions of the front and rear load receiving rods 37 are set to be equal values, and the left and right end surfaces of the front and rear load receiving rods 37 are matched. The right end surfaces of the front and rear load receiving rods 37 are connected to each other by a vertical belt-like flat plate 38 extending in the front-rear direction. Also, the left end surfaces of the front and rear load receiving rods 37 are connected to each other by a vertically-oriented belt-like flat plate 38 that also extends in the front-rear direction.
Here, the distance from the belt-like flat plate 38 on the right side of the load receiving portion 36 to the seat rod 51r of the driver seat 51 and the distance from the belt-like flat plate 38 on the left side of the load receiving portion 36 to the seat rod 52r of the passenger seat 52 are The distance from the maintenance plug Em of the fuel cell stack E to the inner wall surface of the cover main body 31 is set to be smaller.

<About the function of the cover member 30>
Next, the function of the cover member 30 described above will be described.
For example, when the vehicle 10 undergoes a side collision from the left direction, a left center pillar (not shown) is pushed into the passenger compartment due to the collision load, and the passenger seat 52 is pushed rightward. Thus, the collision load is transmitted to the load receiving portion 36 of the cover member 30 via the seat rod 52r of the passenger seat 52.
When the load receiving portion 36 of the cover member 30 receives a collision load via the seat rod 52r of the passenger seat 52, the load receiving portion 36 and the cover main body portion 31 of the cover member 30 move to the right.
Here, the distance from the belt-like flat plate 38 on the right side of the load receiving portion 36 to the seat rod 51r of the driver seat 51 is smaller than the distance from the maintenance plug Em of the fuel cell stack E to the inner wall surface of the cover main body 31. Is set.

Therefore, the belt-like flat plate 38 on the right side of the load receiving portion 36 contacts the seat rod 51r of the driver seat 51 before the inner wall surface of the cover main body portion 31 contacts the maintenance plug Em of the fuel cell stack E. Become. That is, the collision load is transmitted to the seat rod 51r of the driver's seat 51 through the left belt-like flat plate 38, the front and rear load receiving rods 37, and the right belt-like flat plate 38 of the load receiving portion 36, and the seat rod 51r. To the right center pillar (B pillar). As a result, the amount of the left center pillar entering the passenger compartment is reduced.
Further, before the inner wall surface of the cover main body 31 comes into contact with the maintenance plug Em of the fuel cell stack E, the collision load is transmitted to the seat rod 51r of the driver seat 51 through the load receiving portion 36 of the cover member 30. Therefore, the collision load is not transmitted to the maintenance plug Em, and the fuel cell stack E can be prevented from being damaged.

<Advantages of the vehicle floor structure according to this embodiment>
According to the vehicle floor structure according to the present embodiment, the cover member 30 that covers the indoor-side protruding portion of the maintenance plug Em of the fuel cell stack E is against the seat rod 52r of the passenger seat 52 (one seat). Thus, the collision load applied from the axial direction is received, and the side collision load can be transmitted to the seat rod 51r of the driver's seat 51 (the other seat) without applying to the maintenance plug Em.
For this reason, the collision load is not applied to the maintenance plug Em of the fuel cell stack E, and the fuel cell stack E can be prevented from being damaged at the time of a side collision of the vehicle 10.
Moreover, since the structure which receives a collision load with the load receiving rod 37, the intensity | strength of the cover main-body part 31 of the cover member 30 can be suppressed, and cost reduction can be aimed at. Furthermore, since the load receiving rod 37 can be gripped when the cover member 30 is attached and detached, the workability of attaching and removing the cover member 30 is improved.
Furthermore, one ends of the front and rear load receiving rods 37 are connected to each other by a belt-like flat plate 38 extending in the vehicle front-rear direction, and the other ends of the load receiving rods 37 are connected to each other by a belt-like flat plate 38 that also extends in the vehicle front-rear direction. . For this reason, the load receiving surface of the cover member 30 can be lengthened in the vehicle front-rear direction. Therefore, even if the positions of the seat rods 51r and 52r and the cover member 30 are slightly shifted in the vehicle front-rear direction, the collision load is applied from one seat rod 52r to the other seat rod 51r via the load receiving rod 37 and the belt-like flat plate 38. Can be communicated.

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in the present embodiment, an example in which the load receiving portion 36 of the cover member 30 is constituted by the front and rear load receiving rods 37 and the belt-like flat plate 38 is shown. However, the load receiving portion 36 of the cover member 30 can be constituted by a square block instead of the load receiving rod 37 and the belt-like flat plate 38.
In the present embodiment, an example in which the cover member 30 includes the cover main body portion 31 and the load receiving portion 36 has been described. However, it is also possible to configure the cover member 30 only from the cover main body portion 31 and increase the strength of the cover main body portion 31 so that the cover main body portion 31 has the function of the load receiving portion 36.

20 ... floor panel 22e ... floor opening 30 ... cover member 31 ... cover main body 36 ... load receiving part 37 ... load receiving Rod 38 ... Strip flat plate (flat plate)
51 ... Driver seat (the other seat)
51r ··· Seat rod 52 ··· Passenger seat (one seat)
52r ... Seat rod E ... Fuel cell stack (battery)
Em: Maintenance plug

Claims (3)

A battery for driving the vehicle is stored under the floor, and a maintenance plug for the battery projects inward from a floor surface opening formed between the left and right seats in the vehicle interior, and the floor surface opening is the maintenance plug. The floor structure of the vehicle is configured to be covered by a cover member that covers the protruding portion of the interior from the indoor side,
The cover member is disposed between the seat rods of the left and right seats formed to extend in the vehicle width direction,
The cover member is configured to receive a side collision load applied via a seat rod of one sheet and transmit the side collision load to the seat rod of the other sheet without applying the side collision load to the maintenance plug. A vehicle floor structure characterized by the above. The vehicle floor structure according to claim 1,
The cover member is provided with a load receiving rod configured to extend in a vehicle width direction so as to receive a side collision load from the one seat rod and transmit the load to the other seat rod. The vehicle floor structure. The vehicle floor structure according to claim 2,
The cover member is provided with a plurality of load receiving rods arranged in the vehicle front-rear direction, and one ends of the load receiving rods are connected to each other by a flat plate extending in the vehicle front-rear direction. A vehicle floor structure, wherein the other ends of the rods are connected to each other by a flat plate extending in the vehicle longitudinal direction.

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