JP2003291859A - Seat mounting structure - Google Patents

Abstract

(57) [Problem] To provide a seat mounting structure in which a seat can be securely mounted on a floor and a seat can be mounted on the floor without forming a mounting hole in the floor. SOLUTION: A floor front cross member 5 and a floor rear cross member are respectively provided on a front upper wall and a rear upper wall of a rear floor 1 in which a hydrogen tank is disposed below, and provided on a front lower surface of a seat body 6A of a rear seat 6. Forming a stepped portion 6b that descends downward toward the rear, mounting the front portion of the seat body 6A to the mounting seat 5a of the floor front cross member 5, and mounting the rear portion of the seat body 6A to the upper wall of the floor rear cross member. It is characterized by.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat mounting structure, and more particularly to a seat mounting structure in which exhaust gas or the like does not enter the passenger compartment from a seat mounting portion on a floor.

[0002]

2. Description of the Related Art For example, as disclosed in Japanese Patent Application Laid-Open No. 2000-158987, there is a structure in which a rear floor is connected to a high position rearward through a stepped portion on the front floor. Here, when attaching the rear seat to the rear floor, for example, an attachment hole is provided in the rear floor, and the rear seat is attached to the attachment hole with a bolt or the like.

[0003]

However, in the above-mentioned prior art, since the rear floor is provided at a high position behind the front floor via the step portion, exhaust gas and the like are likely to stay under the rear floor. Therefore, if the rear seat is attached to the rear floor with bolts,
As it is, there is a risk that exhaust gas, etc. may enter the vehicle interior through the mounting holes in the rear seat.To prevent this, it is necessary to provide a part that completely blocks the bolts that secure the rear seat and the mounting holes in the rear floor. There is a problem that the number of assembly steps increases. Further, if the mounting holes are formed on the rear floor, the strength and rigidity of the vehicle body are deteriorated, and there is a problem that the plate thickness is correspondingly increased and a reinforcing material is required. Further, in recent years, in addition to gasoline engine vehicles, various types of vehicles such as fuel cell vehicles and hydrogen fuel vehicles have been proposed, and when there is an unburned portion in the burned gas of the fuel gas used, , There is no room for this unburned gas to enter the passenger compartment from the rear floor mounting hole of the rear seat. Therefore, the present invention provides a seat mounting structure capable of securely mounting the seat on the floor and mounting the seat on the floor without forming mounting holes in the floor.

[0004]

In order to solve the above problems, the invention described in claim 1 provides a floor (for example, the rear floor 1 in the embodiment) and a cross member for mounting a seat (for example, the floor in the embodiment). The front cross member 5 and the floor rear cross member 10) are provided, and the seat (for example, the rear seat 6 in the embodiment) is attached to the floor via the cross member. With this configuration, the cross member can be joined to the floor without forming the mounting hole, and the seat can be fixed to the cross member by a fastener or the like.

According to the second aspect of the invention, cross members are provided on the front upper wall and the rear upper wall of the rear floor on which the fuel tank (for example, the hydrogen tank 36 in the embodiment) is arranged below, and cross members are provided. Seat body (for example,
A step portion (e.g., step portion 6b in the embodiment) is formed on the lower surface of the front portion of the seat body 6A in the embodiment and is lowered downward toward the rear portion, and the front portion of the seat body is provided with a front cross member (for example, Of the floor front cross member 5) in the embodiment (for example, the mounting seat 5a in the embodiment) and the rear wall of the seat body at the rear side (for example, the floor rear cross member 10 in the embodiment). , The upper wall 10c in the embodiment)
It is characterized by being attached to each. With this configuration, the cross members can be joined to the rear floor without forming the mounting holes, and the rear seats can be fixed to the cross members by fasteners or the like. Each cross member supports the rear seat and also functions as a member that prevents the rear seat from moving forward when the rear seat tries to move forward by contacting the step on the lower surface of the front part of the rear seat with the rear wall of the front cross member. To do.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Here, the vehicle of the embodiments described below is a vehicle including a fuel cell (not shown) and a capacitor that is an auxiliary power source. As shown in FIG. 3 and FIG. 4, the front portion of the rear floor 1 is stepped downward, and the front edge of the rear floor 1 is joined to the rear edge of the front floor 1A. There is. A rear frame 2 is joined to the lower surfaces of both sides of the rear floor 1 along the front-rear direction of the vehicle body, and a cross-section structure portion surrounded by the rear frame 2 and the rear floor 1 forms a vehicle body skeleton portion K1.

A cross member 4 having an L-shaped cross section is joined to the rear surface of the step portion 3 at the front part of the rear floor 1 so as to straddle the rear frame 2 along the vehicle width direction. The cross-section structure portion surrounded by the arrow forms a vehicle body skeleton portion K2. A floor front cross member (a front side cross member) 5 having a substantially L-shaped cross section and made of a plate material thicker than the rear floor 1 is provided on the step portion 3 so as to cover the step portion 3 from above. It is provided so as to straddle along the vehicle width direction and is joined to the rear floor 1 by welding. The floor front cross member 5 reinforces the vehicle body together with the cross member 4. On the upper surface of the floor front cross member 5, the seat body 6
A mounting seat (upper wall) 5a that bulges upward is provided at a location where the seat body 6A of each rear seat (seat) 6 including the A and the seat back 6B is arranged, and the front mounting hole 7 is provided in each mounting seat 5a. It is provided in two places. Specifically, FIG.
As shown in FIG.
Is provided with a front wall 5b joined to the vertical wall 3a by welding and a rear flange portion 5c joined to the upper surface of the rear floor 1 by welding, and a closed cross-section structure portion is formed on the upper portion of the rear floor 1. .

As shown in FIGS. 3 and 4, an inner panel 9 of the wheel house is joined to the flange portions 8 on both sides of the rear floor 1 to form a wheel house together with an outer panel (not shown). On the upper surface of the rear floor 1, there is a floor rear cross member (rear side cross member) 1 having a U-shaped cross section so as to extend along the vehicle width direction between the inner panels 9 of the wheel house so as to straddle a rear frame 2 arrangement site.
0 is placed. Specifically, as shown in FIG. 2, the front flange 10a and the rear flange 10b of the floor rear cross member 10 are joined to the rear floor 1 by welding, and a closed cross-section structural portion advantageous in strength is formed at this portion. ing. The upper wall 10c of the floor rear cross member 10 is provided with a rear mounting hole 11 of the seat body 6A of the rear seat 6.

1 and 2 in the front mounting hole 7 of the rear seat 6 of the floor front cross member 5 and the rear mounting hole 11 of the rear seat 6 of the floor rear cross member 10.
As shown in, the seat body 6A of the rear seat 6 is fixed by inserting the bolt 13 from the back side of the floor front cross member 5 and the floor rear cross member 10 and tightening the bolt 13 on the nut 15 on the rear seat 6 side. In this embodiment, the bolt 13 is inserted from the back side of the floor front cross member 5 and the floor rear cross member 10 and tightened to the nut 15 on the rear seat 6 side. Alternatively, a nut may be arranged on the back surface of the floor rear cross member 10 and a bolt may be fastened to the nut from the rear seat 6 side.

Here, the shape of the lower surface of the seat body 6A of the rear seat 6 is formed thin so that the front lower surface of the seat body 6A of the rear seat 6 approaches the front upper surface, and corresponds to the floor front cross member 5. An escape portion 6a is formed in the rear portion, and a step portion 6b at a rear portion of the escape portion 6a abuts on a rear wall 5d of the floor front cross member 5 so as to oppose a load of the rear seat 6 which is trying to move forward during braking or the like. It has become. The floor rear cross member 10 has two lower anchors 12 for supporting a child seat (not shown) attached to each rear seat 6 at two positions.

Behind the rear seat 6, a rear pillar cross member 14 having a closed sectional structure is provided along the vehicle width direction,
Each end of the rear pillar cross member 14 is joined to the inner panel 9 of the wheel house through the bracket 18 and the reinforcing plate 19 and is attached to the inner panel of the rear fender panel through a support member (not shown). Here, as shown in FIG. 3, an upper anchor 21 is attached to the rear surface of the rear pillar cross member 14 so as to correspond to the lower anchors 12, 12 of the child seat.

The upper mounting portion 24 of the capacitor 23 is fixed to the rear surface of the rear pillar cross member 14, while the lower portion of the capacitor 23 is mounted on a mounting seat 26 connected to the rear portion of the floor rear cross member 10 and mounted on the rear floor 1. The mounting portion 27 is fixed by the bolts 28, and the capacitor 23 is arranged in an upright position with its upper part slightly rearward.

Here, the capacitor 23 is provided to assist the fuel cell, assists the driving force of the fuel cell at the time of starting or accelerating, and stores the recovered electrical energy at the time of deceleration regeneration. It is covered with 29.

A case 29 is provided above the capacitor 23.
A suction part 33 of the cooling air duct 32 communicating with the inside is provided. On the other hand, the case 2 is provided below the capacitor 23.
The exhaust part 34 of the duct 32 communicating with the inside 9 is the rear floor 1.
It extends to the left and right behind. An exhaust port 35 having an upper opening is attached to an end of the exhaust unit 34, and the capacitor 23 is suction-cooled by a suction fan (not shown) provided in the exhaust port 35. A hydrogen tank (fuel tank) 36 is arranged below the rear floor 1 thus configured as shown in FIG. 1, and a fuel cell is arranged below a front floor 1A (not shown).

According to the above embodiment, the seat body 6A of the rear seat 6 is attached to the floor front cross member 5 and the floor rear cross member 10 which are both welded to the rear floor 1 by bolts 13 and nuts 15, and the rear floor 1 does not require any mounting hole, there is no need to take measures to prevent exhaust gas from entering the vehicle compartment as in the case of forming a mounting hole in the rear floor 1, and the number of parts and assembly steps can be reduced. Moreover, the reacted gas discharged from the fuel cell does not enter the vehicle compartment through the mounting hole of the rear seat 6 described above. Further, since the rear floor 1 is not provided with mounting holes and the floor front cross member 5 reinforces the rear floor 1, the vehicle body rigidity can be improved.

The floor front cross member 5 and the floor rear cross member 10 support the rear seat 6, and when the rear seat 6 is going to move forward, the step 6b on the lower front surface of the rear seat 6 has the floor front cross member 5 therein. Since it contacts the rear wall 5d and functions as a member that prevents the rear seat 6 from moving forward, it is possible to sufficiently counter the forward load applied by the occupant when the vehicle is stopped. Above all, floor front cross member 5
Since the floor rear cross member 10 is connected to the vehicle body skeleton portion K1 and the floor front cross member 5 is arranged along the vehicle body skeleton portion K2, the rear seat 6 can be supported by the entire vehicle body.

[0017]

As described above, according to the invention described in claim 1, since the cross member can be joined to the floor and the seat can be fixed to the cross member by a fastener or the like, the floor can be fixed. Since there is no need to provide a mounting hole in the vehicle, there is no room for external exhaust gas and the like to enter the vehicle interior, measures for preventing exhaust gas intrusion are not required, and the number of parts and assembly steps can be reduced.

According to the invention described in claim 2, in addition to the effect of claim 1, each cross member supports the rear seat, and when the rear seat is about to move forward, a portion behind the front part of the rear seat. Is in contact with the rear wall of the front cross member and functions as a member for preventing forward movement of the rear seat, so that there is an effect that a front load applied by an occupant when the vehicle is stopped can be sufficiently counteracted.

[Brief description of drawings]

FIG. 1 is a cross-sectional view taken along the line AA of FIG. 4 with a rear seat of an embodiment of the present invention attached.

FIG. 2 is a sectional view taken along the line BB of FIG. 4 with the rear seat of the embodiment of the present invention attached.

FIG. 3 is a side view for explaining the embodiment of the present invention.

FIG. 4 is a perspective view of the embodiment of the present invention viewed from the front.

[Explanation of symbols]

1 Rear Floor (Floor) 5 Floor Front Cross Member (Front Cross Member) 5a Mounting Seat (Upper Wall) 6 Rear Seat (Seat) 6A Seat Body 6b Step 10 Floor Rear Cross Member (Rear Cross Member) 10c Upper Wall 36 Hydrogen tank (fuel tank)

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Claims (2)

[Claims] 1. A seat mounting structure characterized in that a cross member for seat mounting is provided on a floor, and the seat is mounted on the floor via the cross member. 2. A cross member is provided on each of a front upper wall and a rear upper wall of a rear floor in which a fuel tank is arranged below, and a step portion is provided on a lower surface of a front portion of a seat body of a rear seat so as to descend downward toward the rear portion. A seat mounting structure, characterized in that the front part of the seat body is mounted on the upper wall of the front cross member, and the rear part of the seat body is mounted on the upper wall of the rear cross member.