JP2001213359A - Floor structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain a seat and a floor from being lifted by load applied to a seat belt. SOLUTION: In this floor structure for a vehicle, a rear part of the seat is assembled to a floor panel FP reinforced with a cross member 12, through a lock mechanism. In this case, floor side lock parts 51, 52, 53 of the lock mechanism are provided on the cross member 12, and the cross member 12 is extended to both lateral ends of the vehicle and connected at other ends to a chassis frame F. Further, longitudinal members 22, 23 for reinforcing the floor panel FP are disposed in proximity to the floor side lock parts 51, 52, 53.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle floor structure.

[0002]

2. Description of the Related Art As one of floor structures, there is a structure in which a rear portion of a seat is assembled to a floor panel reinforced by a cross member via a lock mechanism. It is shown.

[0003]

In the case where the above-mentioned seat has three seats, and a three-point seat belt is attached to a central seat of the three seats, for example, the same seat is used. One end of the belt is attached to the upper part of the seat back, and the other end is attached to the rear of the seat cushion. Therefore, most of the forward load acting on the seat belt from the occupant is applied to the rear portion of the seat and received by the floor panel via the lock mechanism.
However, in the above-mentioned conventional floor structure,
Although the floor panel is reinforced by the cross member, the structure for reinforcing the cross member is not shown, and the load may cause the seat and the floor panel to float together with the cross member.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and a rear portion of a seat is assembled to a floor panel reinforced by a cross member via a lock mechanism. In the floor structure of a vehicle, a floor-side lock portion of the lock mechanism is provided on the cross member, and the cross member extends to both left and right ends of the vehicle and is connected to a chassis frame at both ends. is there. In this case,
It is desirable to dispose a vertical member for reinforcing the floor panel in proximity to the floor-side lock portion.

[0005]

In the vehicle floor structure according to the present invention, the floor side lock portion of the lock mechanism is provided on the cross member, and the cross member is extended to both left and right ends of the vehicle so that the chassis is provided at both ends. Since the seat is connected to the frame, the seat is provided with three seats, and when, for example, a three-point seat belt is mounted on the central seat of these three seats, the forward load acting on the seat belt from the occupant is reduced. Most of them join the rear part of the seat, join the cross member via the lock mechanism, and join from the cross member to the chassis frame. Therefore, the load can be finally received by the high-strength chassis frame, and the lifting of the seat and the floor panel due to the load can be suppressed.

Further, when a vertical member for reinforcing the floor panel is provided near the floor-side lock portion in implementing the present invention, a part of the load applied from the lock mechanism to the cross member by the vertical member. Can be received, so that the seat and the floor panel can be further suppressed from rising.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show an example in which a floor structure according to the present invention is applied to a floor portion A of a second seat S2 of a vehicle having three rows of seats S1, S2, S3, and the floor portion of the second seat S2. Behind A, a floor portion B of the third seat S3 is provided.

In the floor portion A of the second seat S2, as shown in FIGS. 1 and 2, cross members (horizontal members) 11 and 12 are attached to the lower surface of the floor panel FP. 12, the floor panel FP is reinforced. In the floor portion B of the third seat S3, the vertical members 21, 22, 23, and 24 are attached to the lower surface of the floor panel FP at substantially equal intervals by upper end flange portions 21a, 22a, 23a, and 24a. , These vertical members 21, 22, 23,
24 reinforces the floor panel FP.

[0009] The cross member 11 is provided with a second seat S2.
The front end of the floor portion A extends in the vehicle width direction and is attached to the floor panel FP at the upper end flange portion 11a thereof. A reinforcing plate 41 in which the metal fittings 31, 32, and 33 are mounted and a reinforcing plate 42 in which the fixing metal is mounted are mounted.

On the other hand, the cross member 12 extends to the left and right ends of the vehicle behind the floor portion A of the second seat S2, and has a floor panel F at an upper end flange portion 12a.
P, and mount brackets F of the chassis frame F via mounts M at both ends.
a. Also, on the cross member 12,
The striker units 51, 52, and 53, which are lock units on the floor A side of the lock mechanism 50 for fixing the second seat S2 to the floor A, are assembled.

Both ends of the vertical member 21 are connected to the cross member 12 and the cross member 13 assembled to the rear end of the floor panel FP, on which the right seat 83 of the third seat S3 is placed. And striker units 61 and 62 for fixing the striker units.

Each of the vertical members 22 and 23 has both ends connected to the cross members 12 and 13, respectively, and reinforcing plates 43 and 4 connecting the vertical members 22 and 23 thereon.
4 are assembled. On the reinforcing plate 43, a striker unit 63 for fixing the right seat 83 of the third seat S3 to the floor B and a striker unit 71 for fixing the left seat 84 of the third seat S3 to the floor B are assembled. ing. On the other hand, on the reinforcing plate 44, the right seat 83 of the third seat S3 is
And a striker unit 72 for fixing the left seat 84 of the third seat S3 to the floor B.

Both ends of the vertical member 24 are connected to the cross members 12 and 13, respectively, on which striker units 73 and 74 for fixing the left seat 84 of the third seat S3 to the floor portion B are provided. It is assembled.

The striker unit 51 includes a dish-shaped base plate 51a and an inverted U-shaped strike cover 51b welded to the base plate 51a. The striker unit 51 is located approximately one-third from the right side of the floor panel FP in the vehicle width direction. It is assembled corresponding to the provided mounting hole FP1,
At the upper end flange portion 51a1 of the base plate 51a, the upper end flange portion 1 of the floor panel FP and the cross member 12
2a.

The striker unit 52, like the striker unit 51, includes a base plate 52a and a strike cover 52b, and is assembled in correspondence with a mounting hole FP2 provided adjacent to the left side of the mounting hole FP1 on the floor panel FP. Similarly to the striker unit 51, the floor panel FP and the upper end flange 12a of the cross member 12 are sandwiched by the upper end flange 52a1 of the base plate 52a.

The striker unit 53 comprises a base plate 53a and a strike cover 53b, like the striker units 51 and 52, and is provided with a mounting hole FP provided at a position approximately one-third from the left side of the floor panel FP in the vehicle width direction.
3 and the floor panel FP and the cross member 1 at the upper end flange portion 53a1 of the base plate 53a, like the striker units 51 and 52.
It is sandwiched between two upper flange portions 12a.

Each of the striker units 61 and 62 includes a dish-shaped base plate 61a and 62a, and inverted U-shaped strike covers 61b and 62b welded to the base plates 61a and 62a, and has a mounting hole FP4 formed in the floor panel FP. , FP5, and the upper end flange portions 61a of the base plates 61a, 62a.
1, 62a1 sandwiched between the floor panel FP and the upper end flange portion 21a of the vertical member 21.

The striker units 63 and 71 are, like the striker units 61 and 62, provided with a base plate 63.
a, 71a, and strike covers 63b, 71b, which are assembled in correspondence with the mounting holes FP6, FP7 provided in the floor panel FP, and the base plates 63a,
It is sandwiched between the floor panel FP and the reinforcing plate 43 at the upper end flange portions 63a1 and 71a1 of the 71a.

The striker units 64 and 72 have base plates 64a and 72a and strike covers 64b and 7 like the striker units 61, 62, 63 and 71.
2b, mounting hole FP provided in floor panel FP
8 and FP9, and are mounted on the upper end flange portions 64a1, 72a of the base plates 64a, 72a.
1 is sandwiched between the floor panel FP and the reinforcing plate 44.

The striker units 73 and 74, like the striker units 61, 62, 63, 64, 71 and 72, include base plates 73a and 74a and strike covers 73b and 74b, and have mounting holes FP10 formed in the floor panel FP. , FP11 and the upper end flange portions 7 of the base plates 73a, 74a.
Floor panel FP and vertical member 24 at 3a1 and 74a1
Is held between the upper end flange portions 24a.

The first seat S1 has a well-known structure and is attached to the floor panel FP by a well-known attachment method. As shown in FIG. 3, the second seat S2 is a three-seat seat having three seats,
The seat is composed of a right seat 81 having one seat and a left seat 82 having two seats.

The right seat 81 includes a seat cushion 81.
a and a seat back 81b. At the lower front part of the seat cushion 81a, mounting brackets 35 and 36 are rotatably mounted, and at the lower rear part, the right seat 81 is fixed to the floor part A. Locking mechanism 50 for
A lock fitting 54, which is a member on the right side of the right seat 81, is attached.

The right seat 81 is provided with mounting brackets 35, 3
6 is attached to the fixing brackets 31 and 32, respectively, and the lock fitting 54 is detachably attached to the strike cover 51b of the striker unit 51 (see FIG. 5) so that it can be pivotally attached to the floor panel FP. Has become. The right seat 81 is provided with a three-point seat belt 91 for a right occupant.

On the other hand, the left seat 82 has a seat cushion 82a and a seat back 82b, and mounting brackets 37 and 38 are rotatably attached to a lower front part of the seat cushion 82a, and a lower right rear part. Locking members 55 and 56, which are members on the left seat 82 side of the locking mechanism 50 for fixing the left seat 82 to the floor portion A, are respectively attached to the lower rear center portion.

The left seat 82 is provided with mounting brackets 37, 3
8 is attached to the fixing brackets 33 and 34, respectively, and the lock fittings 55 and 56 are detachably attached to the strike covers 52b and 53b of the striker units 52 and 53 so that they can be pivotally attached to the floor panel FP. It has become. Also, the left seat 82
Includes a three-point seat belt 92 for the right occupant (the center occupant in the second seat S2) and a three-point seat belt 92 for the left occupant.
A point-type seat belt 93 is worn.

The seat belt 91 has one end 91a and the other end 91b attached to a body (not shown), and a buckle (not shown) provided with a tongue plate 91c provided at an intermediate portion thereof at a rear left portion of the seat cushion 81a. ) So as to be detachably connected thereto. The seat belt 93 has one end 93a and the other end 9a.
3b is assembled to a body (not shown),
The tongue plate 93c provided at the intermediate portion is detachably connected to a buckle (not shown) provided at the rear of the intermediate portion of the seat cushion 82a.

On the other hand, the seat belt 92 has one end 92a assembled substantially at the center of the upper portion of the seat back 92b, the other end 92b assembled to the rear of the right side of the seat cushion 82a, and a tongue plate provided at an intermediate portion thereof. The 92c is detachably connected to a buckle (not shown) provided on the right rear side of the seat cushion 82a. For this reason, most of the forward load acting on the seat belt 92 from the central occupant is applied to the left seat 82 and the locking mechanism 5
0 is added to the cross member 12.

The third seat S3 is a detachable three-seat seat as shown in FIGS. 1 and 3, and is detachably attached to the right of the floor B of the third seat S3 shown in FIG. And a left seat 84 detachably attached to the left of the floor B of the third seat S3.

The right seat 83 is provided with a seat cushion 83.
a and a seat back 83b, and four mounting brackets 65, 66, 67,
68, and these four mounting brackets 6
5, 66, 67, 68 are the striker units 61, 6
2, 63, 64 strike covers 61b, 62b, 6
3b and 64b are detachably connected.

The left seat 84 is provided with a seat cushion 84.
a and a seat back 84b, and four mounting brackets 75, 76, 77,
78, and these four mounting brackets 7
5, 76, 77, 78 are striker units 71, 7
2, 73, 74 strike covers 71b, 72b, 7
3b and 74b are detachably connected.

A three-point seat belt 94 for a right occupant is mounted on the right seat 83 of the third seat S3, and a three-point seat belt 96 for a left occupant is mounted on the left seat 84. It is installed. The structure of the seat belts 94, 96 is similar to that of the seat belts 91, 93.
Since the configuration is substantially the same as the above, detailed description is omitted. Further, a seat belt 95 for a central occupant is mounted on the right seat 83 and the left seat 84. The seat belt 95 has one end 95a attached to the seat back 84b of the left seat 84, the other end 95b attached to the right rear side of the seat cushion 84a of the left seat 84, and a tongue plate 95c provided at an intermediate portion thereof. Is the seat cushion 83a of the right seat 83
Is detachably connected to a buckle (not shown) provided at the rear of the left side.

In the floor structure of the present embodiment configured as described above, a lock portion (strike unit 51, 52, 53) on the floor portion A side of the lock mechanism 50 of the second seat S2 is provided on the cross member 12, and Since the cross member 12 is extended to the left and right ends of the vehicle and connected to the chassis frame F via the mounts M at both ends, most of the forward load acting on the seat belt 92 from the center occupant of the second seat S2. Is applied to the rear portion of the left seat 82, is applied to the cross member 12 via the lock mechanism 50, and is applied from the cross member 12 to the chassis frame F. Therefore, the load can be finally received by the chassis frame F having high strength, and the lifting of the left seat 82 and the floor panel FP due to the load can be suppressed.

In this embodiment, the vertical members 22 and 23 for reinforcing the floor panel FP are provided in the vicinity of the lock portion on the floor A side of the lock mechanism 50 (that is, the striker units 51, 52 and 53). Since the vertical members 22 and 23 can receive a part of the load applied to the cross member 12 from the lock mechanism 50, the left seat 82 and the floor panel FP can be further suppressed from rising.

In the above embodiment, the present invention is applied to the floor portion A of the second seat S2 of the vehicle having three rows of seats S1, S2, S3, but the present invention is also applied to the floor portion B of the third seat S3. It can be carried out similarly to the embodiment.

[Brief description of the drawings]

FIG. 1 is a schematic side view of the inside of a vehicle employing a floor structure according to the present invention.

FIG. 2 is a plan view of the floor shown in FIG.

FIG. 3 is a perspective view of the second seat shown in FIG. 1;

FIG. 4 is a sectional view taken along line 4-4 of FIG. 2;

FIG. 5 is a side view showing both a vertical side surface of a lock mechanism portion shown in FIG. 2 and a vertical side surface of a right mount portion.

[Explanation of symbols]

12 ... cross member, 21, 22, 23, 24 ... vertical member, 50 ... lock mechanism, 51, 52, 53 ... striker unit (floor side lock portion), F ... chassis frame,
FP: floor panel, S2: second seat.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kei Oyamada 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Inventor Katsuhito 25-25 Kamieike, Yoshiwara Town, Toyota City, Aichi Prefecture Araco Corporation F Terms (Reference) 3D003 AA01 BB01 CA14 CA18 DA19

Claims (2)

[Claims] 1. A floor structure of a vehicle in which a rear portion of a seat is assembled to a floor panel reinforced by a cross member via a lock mechanism, wherein a floor-side lock portion of the lock mechanism is provided on the cross member. And a cross member extending to both left and right ends of the vehicle and connected to a chassis frame at both ends. 2. The vehicle floor structure according to claim 1, wherein a vertical member for reinforcing said floor panel is disposed adjacent to said floor side lock portion.