JP3217221B2 - Vehicle seat fixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device for a vehicle seat, and more particularly to a fixing device for fixing a seat to a floor of a vehicle.

[0002]

2. Description of the Related Art In vehicles such as buses, seats are arranged on the floor. The seat is fixed to the floor via a predetermined fixing device. As such a fixing device, for example, a fixing device as disclosed in Japanese Utility Model Laid-Open No. 4-58419 has conventionally been used.

A structure similar to such a fixing device is shown in FIG.
The mounting plate 2 is provided at the lower end of the seat leg 1.
The mounting plate 2 is fixed to a mounting plate 3 made of a sill provided on the floor panel side.

[0004] The sill 3 constituting the portion to be mounted is covered by a molding 4, and a fixing bracket 5 is arranged so that the lower end is locked to the molding 4. The fixing bracket 5 holds a fixing bolt 6 on the upper end side thereof. The bolt 6 is screwed into a nut 8 welded to the inside of the bracket 5 to press the mounting plate 2 at the tip of the bolt 6. And fix it. A nut 7 for preventing loosening is screwed in a portion above the bolt insertion hole to which the nut 8 of the fixing bracket 5 is welded, and the loosening of the bolt 6 is prevented by the nut 7.

[0005]

As described above, when the seat 9 is conventionally mounted, the bolt 6 is screwed into the nut 8 welded to the fixing bracket 5 to thereby secure the seat 9.
The mounting plate 2 is fastened and fixed to the mounting plate 3. Here, since the bolt 6 does not adhere to the upper surface of the bracket 5, it was necessary to retighten the bolt 6 with the nut 7 for preventing loosening. Further, since the head of the bolt 6 protrudes upward, the dimension L between the head of the bolt 6 and the lower surface of the seat 9 becomes small. There was a problem that could not be fixed.

The present invention has been made in view of such a problem, and it is not necessary to retighten with a nut for preventing loosening, and to secure a sufficient space between a bolt and a seat. It is an object of the present invention to provide a fixing device for a vehicle seat.

[0007]

According to the present invention, a mounting portion to which a seat is fixed is provided on a floor portion of a vehicle.
A fixing plate that is attached to the seat leg in a state of being superposed on the mounting portion, is connected to the seat leg, a holding member is arranged on the mounting plate, and the lower end side is locked to the mounting portion. The fixing bolt attached to the bracket is inserted into the space below the main body between the legs on both sides of the holding member, and is inserted into the insertion hole or the main body of the holding member attached to the fixing bracket. The seat is fixed by screwing a tip end of a fixing bolt protruding upward through a through cut into a nut arranged on a holding member.

[0008] The tip of the fixing bolt attached to the fixing bracket is made to protrude upward through the insertion hole or the notch for insertion of the holding member, and the holding member is screwed with the nut on the holding member to thereby fix the holding member. The mounting plate is pressed and fixed to the mounted portion via the mounting plate, and the seat is fixed to the mounted portion provided on the floor portion via such a mounting plate.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG.
5 are arranged on the floor in a state of being connected two by two to the left and right. The seat 15 has a seat back 16 attached to the rear side thereof. Mounting plates 17 are mounted on both sides of the seats 15 arranged in a state where two are connected to each other in a state of extending downward. The left mounting plate 17 is mounted on a mounting rail 19 provided on the inner side of the vehicle body via a bracket 18, and the bracket 18 and the mounting rail 19 are fixed by bolts 20. It has become.

On the other hand, the right mounting plate 17 is connected to a seat leg 23, and the seat leg 23 is mounted to a mounting portion 25 provided on a floor panel 24 via a fixing bracket 26. It has become.

The mounting structure of the right side in FIG. 1, that is, the mounting structure by the fixing bracket 26 will be described in detail with reference to FIGS.

A mounting plate 29 is provided to connect the lower ends of the front and rear seat legs 23. A pressing member 30 is provided so as to press the base of the seat leg 23 by the mounting plate 29. As shown in an enlarged manner in FIG. 4, the pressing member 30 has an upper surface formed of a main body 31, and both sides of the main body 31 are formed of legs 32. The main body 31 is provided with a cut 33 for inserting a bolt. The fixing bolt 34 attached to the fixing bracket 26 is inserted into the cut 33.

An auxiliary plate 37 having an L-shaped cross section as shown in FIG. 5 is arranged on the holding member 30. The auxiliary plate 37 has a long hole 38, and the long hole 38 allows the fixing bolt 34 inserted through the cut 33 of the pressing member 30 to be further inserted.

On the other hand, the mounting portion 25 on the floor panel 24 side to which the seat 15 is fixed has a mounting plate 41 made of a sill. A molding 42 is mounted from the upper surface to the side surface of the mounting plate 41.

In the above configuration, the seat 15 is arranged such that the mounting plate 29 connecting the lower ends of the seat legs 23 overlaps the mounting plate 41. The upper end of the fixing bracket 26 whose lower end is locked to the lower surface of the mounting plate 41 is inserted into the space below the main body 31 of the pressing member 30 and the mounting bracket attached to the fixing bracket 26. A bolt 34 is inserted through the bolt insertion hole 43 of the fixing bracket 26 and protrudes upward.
And protrudes upward through the notch 33 and the long hole 38 of the auxiliary plate 37. In such a state, the nut 44 is screwed to the fixing bolt 34 from above. A washer 45 is interposed between the nut 44 and the upper surface of the auxiliary plate 37.

As described above, in the present embodiment, the seat 15 is fixed on the floor panel 24 by attaching the fixing bolt 34 to the fixing bracket 26 and tightening the nut 44 from above. That is, FIG.
As shown in FIG. 3, a pressing member 30 is arranged on a mounting plate 29 connecting the front and rear seat legs 23, and the mounting plate 41 provided on the mounting portion 25 of the pressing member 30 and the floor panel 24 is provided. The edge and the fixing leg 26 are fixed by a fixing bracket 26 having a fixing bolt 34, and the fixing leg 34 is tightened by a detent nut 44 so that the seat leg 23 is
Is fixed to the mounting plate 41 of the floor panel 24.

According to such a structure, the fixing bolt 34 is prevented from being loosened by using the nut 44 as a detent nut. Therefore, there is no need to add a locking nut. Also, since the nut for preventing loosening is not required, the upper end of the fixing bolt 34 and the seat 1 shown in FIG.
It is possible to increase the dimension L between the lower seat 5 and the lower surface, and fix the seat even when there is a height restriction such as an auxiliary seat.

A notch 33 is formed in the main body 31 of the holding member 30, and the fixing bolt 3 is formed by the notch 33.
4 can be inserted into the cut 33 from the front surface and attached, and workability is improved. In addition, when a large force is applied to the seat 15, the auxiliary plate 37 hooked on the back side edge of the holding member 30 prevents the fixing bolt 34 from coming off from the cut 33 of the holding member 30. A secure fixation is achieved.

FIG. 6 shows a modification of the above embodiment, in which a bent portion 50 is formed by bending an edge portion of the holding member 30 where the cut 33 is formed upward. I have to. Such a bent portion 50 prevents the fixing bolt 34 from dropping out of the cut 33 of the holding member 30, thereby making it possible to omit the auxiliary plate 37 shown in FIGS. 3 and 5.

[0020]

As described above, according to the present invention, the lower end of the fixing bracket is engaged with the portion to be mounted, and the upper end of the fixing bracket is arranged on the mounting plate connected to the seat leg. Into the space inside the holding member
A fixing bolt attached to the fixing bracket is projected upward through an insertion hole or a notch for insertion of the holding member, and is screwed to a nut disposed on the holding member. Is fixed to the mounting portion.

Therefore, according to the present invention, the nut presses the holding member, which eliminates the need for a nut for tightening, and reduces the number of parts.
The assembly work can be reduced. In addition, since the head of the bolt does not protrude upward, it is possible to increase the size between the fixing device and the lower end of the seat,
It is also possible to fix a seat whose size is limited in the height direction such as an auxiliary seat.

[Brief description of the drawings]

FIG. 1 is a front view of a state in which a pair of sheets are arranged side by side.

FIG. 2 is a side view showing a main part of the seat fixing device.

FIG. 3 is an enlarged longitudinal sectional view showing a fixing device of a seat.

FIG. 4 is a perspective view of a holding member.

FIG. 5 is a perspective view of an auxiliary plate.

FIG. 6 is an enlarged vertical sectional view showing a fixing device of a modified example.

FIG. 7 is an enlarged sectional view of a main part showing a conventional seat fixing device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 15 seat 16 seat back 17 mounting plate 18 bracket 19 mounting rail 20 bolt 23 seat leg 24 floor panel 25 mounting portion 26 fixing bracket 29 mounting plate 30 pressing member 31 main body portion 32 leg portion 33 cutout 34 fixing bolt 37 auxiliary Plate 38 Slotted hole 41 Plate to be attached (sill) 42 Mold 43 Bolt insertion hole 44 Nut 45 Washer 50 Bend

Claims (1)

(57) [Claims] 1. A mounting portion provided on a floor portion of a vehicle and to which a seat is fixed, a mounting plate connected to a seat leg and mounted on the mounting portion in a state of being overlapped with the mounting portion, A fixing bolt for fixing, and a leg portion on both sides, the main portion forms a predetermined space between the main body portion and the attached plate by the leg portion,
Moreover, an insertion hole or a notch for inserting a fixing bolt is formed in the main body, and a lower end side is to be locked to the mounting portion, and the fixing bolt is attached. A fixing bracket adapted to be inserted into the space of the holding member in a state where the holding member is held, and the fixing bracket attached to the holding bracket and projecting upward through an insertion hole or an insertion cutout of the holding member. A nut that is screwed with a tip end portion of the bolt and is disposed on the holding member so as to hold the holding member.