JP2595422Y2 - Car floor structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure to which a vehicle seat is attached, and more particularly to a floor structure of a vehicle which is effective in preventing rust and preventing water leakage.

[0002]

2. Description of the Related Art An example of a rear floor structure to which a rear seat of an automobile is attached is shown in FIGS. Rear floor pan 4 (FIG. 6), rear seat center bar 26 (FIG. 7),
Rear seat side bar 27 (FIG. 8), rear seat front patch 28 (FIG. 9), rear seat belt bar 29 (FIG. 1)
0) and the like. The rear floor pan 4 is shown in FIG.
As shown in FIG. 1, a flat portion 31 having a concave portion 30 for preventing interference of a propeller shaft (not shown), a seat mounting portion 32 forming a floor surface with a bead on which a seat (not shown) is mounted, and a rear portion thereof And the inclined portion 33 rising up. The rear seat center bar 26 shown in FIG. 7 is made of a plate-like member fixed by spot welding or the like to the flat portion 31 of the rear floor pan 4 and the indoor side in front of the seat mounting portion 32, and the rear seat side bar 27 shown in FIG. And a box-shaped member fixed to both sides of the flat portion 31 and the seat mounting portion 32 of the rear floor pan 4. On the other hand, a rear seat front patch 28 shown in FIG. 9 and a rear seat belt bar 29 shown in FIG. 10 are reinforcing members fixed to the rear side of the rear floor pan 4. The rear seat front patch 28 is formed of a rectangular-shaped reinforcing plate provided with a welding nut 34 for mounting the seat, and is fixed to the front surface of the seat mounting portion 32 of the rear floor pan 4. The rear seat belt bar 29 is formed of a reinforcing member having a shape fixed to the seat mounting portion 32 and the rear inclined portion 33 of the rear floor pan 4.
A welding nut 35 for attaching the seat is fixed.

FIG. 11 is a partial cross-sectional view showing a fixed state of a rear seat center bar 26 and a rear seat front patch 28 attached to the front and back of the seat attaching portion 32 of the rear floor pan 4, and FIG. FIG. 7 is a partial cross-sectional view showing a fixed state of a rear seat belt bar 29 attached to a back surface of a rear inclined portion 33 of the seat attachment portion 32. As shown in FIG. 11, the rear seat front patch 28 is spot-welded with the plate mating portions 36 and 37 at both ends in contact with the back surface of the rear floor pan 4, and the rear seat center bar at a position opposed to the welding nut 34. A through hole 38 for attaching a seat (not shown) is formed in the rear floor pan 26 and the rear floor pan 4.
On the other hand, as shown in FIG. 12, the rear seatbelt bar 29 is spot-welded with its plate-matching portions 39 and 40 and the convex portion 41 to which the welding nut 35 is fixed abutting on the rear floor pan 4. A through hole 42 is formed through the rear floor pan 4 at a position opposite to the above. The unillustrated seat is mounted and fixed on the rear floor pan 4 by unillustrated mounting bolts screwed to the welding nuts 34 and 35 and the like.

On the other hand, as one example of a conventional technology of a floor structure for mounting a seat, there is a technology disclosed in Japanese Patent Application Laid-Open No. Sho 59-14578. In this technique, welding nuts corresponding to mounting holes of a plurality of sheets are fixed to a floor panel in advance, and a closed cross-section covering the welding nuts is fixed to the back surface of the floor panel. A large number of sheets can be selectively attached to the floor panel, and since the welding nut is covered by the closed cross section, the welding nut is not exposed to water, and the unused welding nut is not closed by a grommet or the like. Both of them are characterized in that water leakage into the room is prevented.

[0005]

The rear surface of the rear floor pan 4 shown in FIG. 6 and the like is directly sprayed with water, so that electrodeposition coating is performed for rust prevention. However, FIGS. 11 and 12
As shown in (1), since the reinforcing members such as the rear seat front patch 28 and the rear seat belt bar 29 are fixed to the rear surface of the rear floor pan 4, there is a problem that it is difficult to completely perform electrodeposition coating. Further, the plate joining portions 36 and 37 of the rear seat front patch 28 and the rear seat belt bar 29
A rust preventive is applied in advance between the plate fitting portions 39, 40 and the convex portion 41 and the contact surface with the rear floor pan 4 and spot-welded, or the plate fitting portions 36, 3 at the time of electrodeposition coating.
Rust prevention treatment is performed by the penetration of the electrodeposition coating liquid into 7, 39, 40. However, none of them is incomplete as a rust preventive treatment. Further, as described above, since water is splashed on the rear surface of the rear floor pan 4, water enters the gap between the mating surfaces of the rear seat front patch 28 and the rear seat belt bar 29 with the rear floor pan 4, causing rust. is there. Further, even after the seat is attached, there is a problem that water leaks from the welding nuts 34 and 35 of the rear seat front patch 28 and the rear seat belt bar 29 through the through holes 38 and 42 into the room. In particular,
There is a problem that panel distortion is generated around the area where the welding nuts 34 and 35 are attached, and water leakage easily occurs.

In the floor structure of an automobile disclosed in JP-A-59-14578, since the welding nut is covered by the closed cross-section as described above, water leakage into the room is prevented. However, since the closed cross-section is welded to the back surface of the floor pan, distortion occurs during welding of the mating surface, and water penetrates into the inside of the closed cross-section through the gap, and the penetrated water passes through the welding nut. To enter the room
There is a problem that rust occurs around the floor pan. In addition, there is also a problem that the electrodeposition process on the back surface of the floor pan is not sufficiently performed due to the closed cross section.

[0007] The present invention solves the above problems, there is no leakage of water into the room, the rust prevention treatment of the floor pan is reliably performed, and damage to the floor pan and the like due to rust is prevented.
It is an object of the present invention to provide a floor structure of an automobile in which a life is improved and outside noise that enters a room from a floor pan side is reduced.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a box-like structure that covers the surface of a rear floor pan.
Heel board panel
The entire outer edge of the rear floor pan contacting the rear floor pan
Attached to the lower pan and the heel board panel
Welding for fixing the rear sheet to the back side with bolts
Attach the reinforcing member provided with the nut, and
Between the rear side of the panel and the rear floor pan.
This constitutes a floor structure of an automobile forming a closed space .

[0009]

[ Function ] The heel board panel covers the surface of the rear floor pan.
It is made of a box that is covered and mounted, and its entire outer edge
To secure the rear floor pan to the rear floor pan
From the outside of the car. The rear seat is a heel board
Is mounted on the flannel by bolts,
Installed on a reinforcing member fixed to the back side of the heel board panel
Screw into the welded nut. Heelbo as above
The reinforcement panel is separated from the outside of the vehicle
The welding nuts and bolts are also isolated from the outside of the vehicle. That
This prevents rusting and prevents water from entering the cabin from outside the vehicle.
Intrusion is prevented. Also, the rear floor pan has a rear sea
Because there is no fixed material for fixing
Rust prevention treatment of the rear floor pan is performed reliably. On the other hand,
Between the rear side of the panel board and the rear floor pan
Sound from outside the vehicle enters the cabin due to the presence of a closed space with an appropriate volume
Is reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The rear floor pan 4 shown in FIG. 2 is made of a press-formed member in which a flat portion 31, a seat mounting portion 32, and an inclined portion 33 are integrally formed as in FIG. In this embodiment, no member is fixed to the rear side of the rear floor pan 4, and the heel board panel 1 shown in FIG. A rear seat front patch 2 (FIG. 4) and a bolster 3 (FIG. 5), which are one of the reinforcing members, are fixed to the back side of the heel board panel 1.

FIG. 1 is a sectional view showing a connection structure between the rear floor pan 4 and the heel board panel 1 and a connection structure between the heel board panel 1, the rear seat front patch 2 and the bolster 3. As shown in FIGS. 1 and 3, the heel board panel 1 has a flange portion 5 fixed to the flat portion 31 of the rear floor pan 4 and an inclined portion 6 fixed to the front surface of the seat mounting portion 32 of the rear floor pan 4. A flat portion 7 which covers the surface of the seat mounting portion 32 and is disposed at an appropriate distance a, and a flange portion 8 which abuts and is fixed to the upper end flange surface 43 of the inclined portion 33 behind the rear floor pan 4. And a concave portion 9 formed between the flange portion 8 and the flat portion 7. Heel board panel 1
Is a part of the flange portion 5 and the inclined portion 6 forming the outer edge thereof.
And the rear flange portion 8 is brought into contact with the rear floor pan 4
It is fixed.

As shown in FIGS. 1 and 4, the rear seat front patch 2 is formed of a reinforcing member bent in a rectangular shape, and welding nuts 10 and 11 for attaching the seat are fixed thereto. One end of the rear seat front patch 2 abuts and is fixed to the inclined portion 6 of the heel board panel 1, and the other end abuts and is fixed to the flat portion 7 of the heel board panel 1. It should be noted that bolt holes 12 and 13 for seat attachment are formed through the heel board panel 1 at positions facing the welding nuts 10 and 11.

As shown in FIGS. 1 and 5, the bolster 3
Consists of an elongated reinforcing member having a bent portion 14 having a U-shaped cross section and mounting flange portions 15 and 16 formed at both ends thereof. Welding nuts 17 and 18 for attaching a sheet are fixed to the mounting flange portions 15 and 16. As shown in FIG. 1, the bolster 3 has the bent portion 14 disposed opposite to the concave portion 9 of the heel board panel 1, and the mounting flange portions 15 and 16 are fixed to the flat portion 7 and the like. Bolt holes 19 and 20 for attaching a sheet are formed through the flat portion 7 at positions opposed to the welding nuts 17 and 18.
The bolster 3 has side flange portions 21 and 2 in the longitudinal direction.
2 is fixed to the side flange portions 23 and 24 behind the flat portion 7 of the heel board panel 1.

As shown in FIG. 1, the heel board panel 1 to which the rear seat front patch 2 and the bolster 3 are fixed at a predetermined position has been subjected to a predetermined rust-preventive treatment and then has covered the rear floor pan 4 through a predetermined interval a. It is fixed on the rear floor pan 4 in a state. The heel board panel 1 and the rear floor pan 4 are all joined together on the front side of the rear floor pan 4, and there is no mating surface on the rear side. Therefore, the electrodeposition coating of the rear surface of the rear floor pan 4 is completely performed. On the other hand, between the heel board panel 1 and the rear floor pan 4, a closed space 25 surrounded by both is formed. Therefore, a floor having a double structure is formed. Weld nut 1 fixed to rear seat front patch 2 and bolster 3
All of 0, 11, 17, and 18 are housed in the closed space 25, and are shut off from the outside by the rear floor pan 4. Therefore, water does not enter the welding nuts 10, 11, 17, 18 at all. On the other hand, since the rear seat front patch 2 and the bolster 3 function as reinforcing members for reinforcing the heel board panel 1, the heel board panel 1
The unillustrated seat mounted on the upper surface can be reliably supported. Also, rear seat front patch 2 and bolster
3 and welding nuts 10, 11, 17, 18, etc.
Fixed heel board panel 1 to rear floor pan 4
As a result, assemblability is improved, and work efficiency and quality are improved.
It is.

In this embodiment, the rear floor pan 4 has been described, but the present invention is also applicable to a front floor pan and other floor pans. In addition, the heel board panel 1, the rear seat front patch 2, and the bolster 3 have the shapes shown in the figure, but are not limited thereto, and may have an appropriate shape according to the shape of the floor pan. In addition, by providing an opening communicating between the inside of the closed space 25 and the indoor side, it is of course possible to effectively use the closed space 25 as a container.

[0016]

According to the present invention, the following remarkable effects are obtained. (1) There is no member fixed to the back side of the floor pan, and the electrodeposition coating process of the floor pan is completely and reliably performed. Therefore, reliable rust prevention is performed and the life is improved. (2) The heel board panel is a car under the rear floor pan.
Separated from the outside, the rear on the heel board panel
Bolts for fixing the seat are on the back side of the heel board panel
Screwed to the welding nut provided on the reinforcing member
Is therefore, water entering the interior side of the mounting portion of the rear seat is eliminated. (3) Since a closed space is formed between the floor pan and the heel board panel , sound outside the vehicle is blocked by the closed space, and indoor soundproofing can be achieved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an entire structure of an embodiment of the present invention.

FIG. 2 is a perspective view showing a rear floor pan to which the embodiment is applied.

FIG. 3 is a perspective view of the heel board panel of the embodiment.

FIG. 4 is a perspective view of a rear seat front patch of the embodiment.

FIG. 5 is a perspective view of the bolster of the embodiment.

FIG. 6 is a perspective view of a rear floor pan generally used conventionally.

FIG. 7 is a perspective view of a rear seat center bar applied to a conventional floor structure.

FIG. 8 is a partial perspective view of a rear seat side bar employed in a conventional floor structure.

FIG. 9 is a perspective view of a rear seat front patch used in a conventional floor structure.

FIG. 10 is a perspective view of a rear seat belt bar used in a conventional floor structure.

FIG. 11 is a partial sectional view showing a structure around a seat mounting portion of a conventional floor structure.

FIG. 12 is a partial cross-sectional view showing a structure around a seat mounting portion of a conventional floor structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heel board panel 2 Rear seat front patch 3 Bolster 4 Rear floor pan 5 Flange part 6 Inclined part 7 Flat part 8 Flange part 9 Concave part 10 Weld nut 11 Weld nut 12 Bolt hole 13 Bolt hole 14 Bend part 15 Mounting flange part 16 Mounting flange part 17 Welding Nut 18 Welding Nut 19 Bolt Hole 20 Bolt Hole 21 Side Flange 22 Side Flange 23 Side Flange 24 Side Flange 25 Sealed Space

Claims (1)

(57) [Scope of request for utility model registration] 1. A box shape covering the surface of a rear floor pan
Equipped with a heel board panel,
The entire outer edge that contacts the rear floor pan is
Affixed to the apan and the back of the heel board panel
Welding nut for fixing the rear sheet with bolts on the surface side
A reinforcing member provided with a heel board panel.
Between the rear side of the floor and the rear floor pan.
An automobile floor structure, wherein a closed space is formed .