JP2004168235A - Seat mounting structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat mounting structure for a vehicle capable of securing the retentivity in vehicle frontal impact accident by utilizing the strength of a cross member even in a vehicle of a structure where the cross member can not be mounted near rear seat legs. <P>SOLUTION: In this seat for the vehicle, the rear seat legs 29b, 29b are fastened and fixed by means of weld bolts, 6, 6, 8, 8 in a state that the cross member 3 mounted at a lower face side of a floor panel 1 and front end-side left and right side parts of a bracket 4 mounted on an upper face of the floor panel 1 between the rear seat legs 29b, 29b are held at a rear part with respect to the rear seat legs 29b, 29b mounted on rear ends of lower rails 25b, 26b of inner-side slide rails 25, 26. A rear end side of the bracket 4 is fastened and fixed to a reinforcement 3b of the cross member 3 through the floor panel 1 by means of bolts 7, 7, 7, 7. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle seat mounting structure, and more particularly to a technique for securing a holding force at the time of a vehicle frontal collision in a vehicle seat in which a buckle for detachably attaching a tongue of a seat belt is mounted on an inner slide rail. About.
[0002]
As shown in FIG. 4, in this type of conventional vehicle seat mounting structure, a buckle 101 is mounted to a rear portion of an upper rail 102a of an inner slide rail 102 and a rear end of a lower rail 102b of the inner slide rail 102. Since the fixed rear seat leg 103 is fastened and fixed to the cross member 105 via the floor panel 104 with the bolt 106, the strength of the cross member is used to secure the holding force at the time of a frontal collision of the vehicle. It has a structure (for example, refer to Patent Documents 1 and 2).
[0003]
[Patent Document 1]
JP 2001-1815 A (page (2), FIG. 2)
[Patent Document 2]
JP-A-7-323765 (page (2), FIG. 3)
[0004]
[Problems to be solved by the invention]
However, in a vehicle having a structure in which the cross member 105 cannot be disposed near the rear seat leg 103 as in the conventional example, the strength of the cross member is used to secure a holding force at the time of a frontal collision of the vehicle. There was a problem that it was not possible.
[0005]
The present invention has been made in view of the above-mentioned conventional problems, and even in a vehicle having a structure in which a cross member cannot be disposed near the rear seat leg, the strength of the cross member is utilized in a vehicle front collision. It is an object of the present invention to provide a vehicle seat mounting structure capable of securing a holding force.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a vehicle seat mounting structure according to claim 1 of the present invention has a lower rail of a slide rail fixed to an upper surface side of a floor panel via a seat leg, and an inner slide rail for a seat belt. In the vehicle seat to which the buckle is attached, a cross member is disposed on the lower surface side of the floor panel behind the rear seat leg provided at the rear end of the lower rail in the inner slide rail, and the cross member and the rear seat are provided. The rear seat leg is fastened and fixed to the floor panel by bolts while sandwiching the front end of the substantially flat bracket disposed on the upper surface of the floor panel between the leg and the rear panel, and the rear end of the substantially flat bracket is fixed to the floor panel. Is fixed to the cross member by bolts through It was a means to a butterfly.
[0007]
The vehicle seat mounting structure according to a second aspect of the present invention is the vehicle seat mounting structure according to the first aspect, wherein the substantially flat plate-shaped bracket is a lower rail on both inner slide rails of the left and right seats of the vehicle seat. The rear seat legs are disposed on the upper surface of the floor panel between the rear seat legs provided at the rear end and the cross member, and the rear seat legs are respectively attached to the floor panel with the front end side of the substantially flat plate-shaped bracket interposed therebetween. On the other hand, it is characterized in that it is fastened and fixed by bolts.
[0008]
A vehicle seat mounting structure according to a third aspect of the present invention is the vehicle seat mounting structure according to the first or second aspect, wherein a reinforcing bead is formed on the substantially flat bracket. did.
[0009]
Function and Effect of the Invention
In the vehicle seat mounting structure according to the first aspect of the present invention, as described above, the cross disposed on the lower surface side of the floor panel behind the rear seat leg provided at the rear end of the lower rail in the inner slide rail. The rear seat leg is fastened and fixed to the floor panel by bolts with the front end side of the substantially flat bracket disposed on the upper surface of the floor panel between the member and the rear seat leg sandwiched between the member and the rear seat leg. Since the end side is fastened and fixed to the cross member via the floor panel with a bolt, the load applied to the slide rail via the seat belt and the buckle at the time of a frontal collision is reduced by the rear portion provided at the rear end of the lower rail of the slide rail. Through the seat legs, on the floor panel, and after the rear seat legs Through the substantially flat bracket which connects the cross member disposed in a state of being firmly supported by the floor panel and the cross member.
Therefore, even in a vehicle having a structure in which the cross member cannot be arranged in the vicinity of the rear seat leg, it is possible to obtain the effect that the holding force at the time of a vehicle front collision can be secured by utilizing the strength of the cross member.
[0010]
In addition, a substantially flat bracket is used as a bracket that is disposed on the upper surface of the floor panel and connects the rear seat leg and the cross member disposed behind the rear leg, so that the foot floor of the rear seat occupant is kept flat. At the same time, the rear end side of the substantially flat bracket is not only fastened and fixed to the cross member via the floor panel with bolts, but also the front end side is sandwiched between the rear seat leg and the floor panel. , The rigidity of the floor portion is increased, whereby the effect of suppressing the vibration of the seat during running of the vehicle can be obtained.
Further, since it is not necessary to extend the slide rail, when the seat on which the slide rail is mounted is attached to the vehicle, it can be easily inserted into the vehicle interior.
[0011]
According to a second aspect of the present invention, in the vehicle seat mounting structure according to the first aspect, as described above, the one flat plate-shaped bracket is provided at the rear ends of the lower rails on both inner slide rails of the left and right seats of the vehicle seat. Since the bracket that connects the two rear seat legs and the cross member provided is configured, the number of parts is reduced, and the substantially flat bracket becomes wider in the vehicle width direction, so that the rigidity of the floor portion is further increased. As a result, the effect of suppressing vibration of the seat during traveling of the vehicle can be enhanced.
[0012]
According to the third aspect of the present invention, in the vehicle seat mounting structure according to the first or second aspect, as described above, the rigidity of the floor portion is further increased by forming a reinforcing bead on the substantially flat bracket. As a result, the effect of suppressing vibration of the seat during traveling of the vehicle can be further enhanced.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings. The embodiment of the present invention corresponds to the third aspect of the present invention.
FIG. 1 is a perspective view from the rear showing a vehicle seat mounting structure according to an embodiment of the invention, FIG. 2 is a perspective view from the front, and FIG. 3 is a vertical sectional side view of the main part. Reference numeral 1 denotes a floor panel, 2 denotes a vehicle seat, 3 denotes a cross member, and 4 denotes a bracket (substantially flat bracket).
[0014]
More specifically, as shown in FIG. 2, the vehicle seat 2 constitutes a front seat capable of sitting up to three people, and a left seat 21 and a wider right seat 22 are separately provided. Is formed.
The left seat 21 includes a seat back 21c and a headrest 21d that can be reclined by operating a seat cushion 21a and a reclining device 21b, and the right seat 22 reclines by operating a wider seat cushion 22a and a not-shown reclining device. A possible seat back 22c, a headless 22d, and a seat back 22b also serving as an armrest are provided.
[0015]
The left and right seats 21 and 22 are mounted on the floor panel 1 by outer slide rails 23 and 24 and inner slide rails 25 and 26, respectively, and can be slid forward and backward by operating slide levers 27 and 28, respectively. It has become.
The left seat 21 is provided with a left seat buckle 21e and a center seat tongue 21f, and the right seat 22 is provided with a right seat buckle 22e and a center seat buckle 22f. In FIG. 2, reference numeral 22g denotes a seat belt provided with a right seat tongue 22h.
[0016]
The outer slide rails 23, 24 and the inner slide rails 25, 26 have movable upper rails 23a, 24a, 25a, 26a fixed to the seat cushions 21a, 22a, respectively, while fixed lower rails 23b, 24b, 25b, 26b is fixed to the floor panel 1 side via a front seat leg 29a and a rear seat leg 29b fixed to both front and rear ends thereof. The buckles 21e, 22e, 22f are provided with their bases fixed to the movable upper rails 25a, 26a of the inner slide rails 25, 26.
[0017]
As shown in FIG. 3, the floor panel 1 on which the two seats 21 and 22 are arranged is formed with a step portion in which the foot of the front seat occupant is low and the rear is higher than that. The front seat legs 29a are fastened and fixed by bolts 13 to the mount bracket 12 fixed to the mounting bracket 12.
[0018]
A gasoline tank 5 is arranged below the stepped portion of the floor panel 1. In order to secure an arrangement space for the gasoline tank 5, the cross member 3 is attached to the floor at the rear position of the gasoline tank 5. The cross member 3 is arranged at a position away from the rear seat leg 29b by a predetermined distance behind the lower seat leg 29b. The cross member 3 is formed in a tubular shape having a rectangular cross section by a main body portion 3a having a substantially U-shaped cross section and a reinforcement 3b for closing an opening on the upper surface thereof.
[0019]
Therefore, the rear seat legs 29b, 29b on the inner slide rails 25, 26 side are fixed to the cross member 3 via the bracket 4. The bracket 4 constitutes a substantially flat plate-shaped bracket, and as shown in FIGS. 1 and 3, is reinforced by forming a reinforcing bead 4a during press forming of a flat plate.
[0020]
That is, as shown in FIGS. 1 and 3, the bracket 4 is provided with the positions of the rear seat legs 29b, 29b provided at the rear ends of the lower rails 25b, 26b of the inner slide rails 25, 26 and the cross member 3 The rear seat legs 29b, 29b are disposed on the upper surface of the floor panel 1 between the right and left sides of the bracket 4 with the front end side left and right sides of the bracket 4 sandwiched by the weld bolts 6, 6, respectively. The bracket 4 is fastened and fixed, and the rear end side of the bracket 4 is fastened and fixed to the reinforce 3b of the cross member 3 via the floor panel 1 by bolts 7, 7, 7, 7. The tongues 29c of the rear seat legs 29b, 29b are fastened and fixed to the floor panel 1 by weld bolts 8, 8, respectively.
[0021]
Next, the operation and effect of the embodiment of the present invention will be described.
In the vehicle seat mounting structure according to the embodiment of the present invention, as described above, the floor is provided behind the rear seat legs 29b, 29b provided at the rear ends of the lower rails 25b, 26b of the inner slide rails 25, 26. The rear seat legs 29b, with the front left and right sides of the bracket 4 disposed on the upper surface of the floor panel 1 between the cross member 3 disposed on the lower surface side of the panel 1 and the rear seat legs 29b, 29b, 29b is fastened and fixed to the floor panel 1 by weld bolts 6, 6, 8, 8 and the rear end side of the bracket 4 is fixed to the reinforcement 3b of the cross member 3 via the floor panel 1 by bolts 7, 7, 7, 7. By being fastened and fixed, the inner side slides through the seat belt 22g and the buckle 22e at the time of a frontal collision. The load applied to the rail 26 (25) is firstly transmitted to the floor panel 1 via a rear seat leg 29b (29b) provided at the rear end of the lower rail 26b (25b) of the inner slide rail 26 (25). Then, the rear seat leg 29b (29b) is firmly supported by the floor panel 1 and the cross member 3 via the bracket 4 connecting the cross member 3 arranged behind the rear seat leg 29b (29b).
Therefore, even in a vehicle having a structure in which the cross member 3 cannot be arranged near the rear seat legs 29b, 29b, it is possible to secure the holding force at the time of a vehicle front collision by utilizing the strength of the cross member 3. The effect is obtained.
[0022]
Further, a substantially flat bracket is used as the bracket 4 which is arranged on the upper surface of the floor panel 1 and connects the rear seat legs 29b, 29b and the cross member 3 arranged behind the rear seat legs 29b. And the bracket 4 is not only fixed at its rear end side to the cross member 3 via the floor panel 1 with bolts 7, 7, 7, 7 but also at the front end side of the bracket 4. Since both sides are also fastened and fixed with weld bolts 6, 6, 8, 8 while being sandwiched between the rear seat legs 29b, 29b and the floor panel 1, the rigidity of the floor is increased, thereby The effect is obtained that vibrations of both seats 21 and 22 during running of the vehicle can be suppressed.
[0023]
In addition, as described above, the bracket 4 that connects the cross member 3 to the rear seat legs 29b, 29b provided at the rear ends of the lower rails 25b, 26b of the left and right seats 21, 22 with one bracket is configured. As a result, the number of parts is reduced, and the bracket 4 is widened in the vehicle width direction, so that the rigidity of the floor portion is further increased, thereby increasing the seat vibration suppression effect during vehicle running. Become like
[0024]
Further, as described above, since the reinforcing bead 4a is formed on the bracket 4, the rigidity of the floor portion is further increased, whereby the effect of suppressing the vibration of the seat during running of the vehicle can be further enhanced. Become like
Further, as described above, since the arrangement position of the cross member 3 is not limited by the position of the vehicle seat 2, the degree of freedom in the layout of components on the lower side of the floor panel 1 is increased.
[0025]
Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments.
For example, in the embodiment of the invention, the buckles 21e and 22e are fixed to the upper rails 25a and 26a, but may be fixed to the lower rails 25b and 26b.
[0026]
In the embodiment of the invention, one bracket is used to connect the cross members 3 to the rear seat legs 29b, 29b provided at the rear ends of the lower rails 25b, 26b of the left and right seats 21, 22. However, the left and right sheets 21 and 22 may be provided separately.
[Brief description of the drawings]
FIG. 1 is a rear perspective view showing a vehicle seat mounting structure according to an embodiment of the present invention.
FIG. 2 is a front perspective view showing the vehicle seat mounting structure according to the embodiment of the invention;
FIG. 3 is a longitudinal sectional side view of a main part showing a vehicle seat mounting structure according to an embodiment of the present invention.
FIG. 4 is a longitudinal sectional side view of a main part showing a conventional vehicle seat mounting structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Floor panel 2 Vehicle seat 3 Cross member 3a Main part 3b Reinforce 4 Bracket (substantially flat bracket)
4a reinforcement bead 5 gasoline tank 6 weld bolt 7 bolt 8 weld bolt 11 step front wall 12 mounting bracket 13 bolt 21 left seat 21a seat cushion 21b reclining device 21c seat back 21d headrest 21e left seat buckle 21f center seat tongue 22 right Seat 22a Seat cushion 22b Seat back 22c also serving as armrest 22c Seat back 22d Headrest 22e Right seat buckle 22f Center seat buckle 22g Seat belt 22h Right seat tongue 23 Outer slide rail 23a Movable upper rail 23b Fixed lower rail 24 Outer side Slide rail 24a Movable upper rail 24b Fixed lower rail 25 Inner slide rail 25a Movable upper rail 25 Stationary lower rail 26 inner side slide rail 26a movable upper rail 26b stationary lower rail 27 slide lever 28 slide lever 29a front seat leg 29b rear seat leg

Claims (3)

In a vehicle seat in which a lower rail of a slide rail is fixed to an upper surface side of a floor panel via a seat leg, and a buckle for a seat belt is attached to an inner slide rail,
A cross member is arranged on the lower surface side of the floor panel behind the rear seat leg provided at the rear end of the lower rail in the inner slide rail,
The rear seat leg is fastened and fixed to the floor panel by bolts while sandwiching the front end side of the substantially flat bracket disposed on the upper surface of the floor panel between the cross member and the rear seat leg,
A seat mounting structure for a vehicle, wherein a rear end of the substantially flat bracket is fastened and fixed to the cross member via a floor panel by bolts. The substantially flat bracket is disposed on an upper surface of a floor panel between two rear seat legs provided at rear ends of lower rails of both inner slide rails of both left and right seats of the vehicle seat and the cross member,
2. The vehicle seat mounting structure according to claim 1, wherein the rear seat legs are fastened and fixed to the floor panel by bolts with the front end sides of the substantially flat plate-shaped brackets interposed therebetween. 3. 3. The vehicle seat mounting structure according to claim 1, wherein a reinforcing bead is formed on the substantially flat bracket.

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