JP4075582B2 - Vehicle seat mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle seat mounting structure, and in particular, a technique for securing a holding force at the time of a vehicle front collision in a vehicle seat in which a buckle for detachably mounting a seat belt tongue is mounted on an inner slide rail. About.
[0002]
As shown in FIG. 4, this type of vehicle seat mounting structure of the conventional example has a buckle 101 attached to the rear portion of the upper rail 102 a in the inner slide rail 102 and at the rear end of the lower rail 102 b in the inner slide rail 102. The fixed rear seat leg 103 is fastened and fixed to the cross member 105 by the bolt 106 via the floor panel 104, so that the holding force at the time of a vehicle front collision is secured by using the strength of the cross member. It has a structure (see, for example, Patent Documents 1 and 2).
[0003]
[Patent Document 1]
JP 2001-1815 A (Page (2), FIG. 2)
[Patent Document 2]
JP 7-323765 A (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 in the vicinity of 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 vehicle front collision. There was a problem that I could not.
[0005]
The present invention has been made paying attention to the above-described conventional problems, and even in a vehicle having a structure in which a cross member cannot be disposed in the vicinity of the rear seat leg, the strength of the cross member is used during 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]
To achieve the above object, the vehicle seat mounting structure according to claim 1 of the present invention is such that the lower rail of the slide rail is fixed to the upper surface side of the floor panel via the seat leg, and the inner side slide rail is used for the seat belt. in the vehicle seat buckle is attached, wherein the more rear seat leg provided on the rear end of the lower rail in the inner side slide rail cross member is disposed on the lower surface side of the floor panel at the rear, the right and left the vehicle seat both A substantially flat bracket on the upper surface of the floor panel between the two rear seat legs provided at the lower rail rear ends of the inner side slide rails of the seat and the cross member, and between the two rear seat legs including the two rear seat legs. There is arranged, prior to the front end side of the substantially flat plate bracket sandwiched state; Both rear seat legs are fastened by bolts to the floor panel, respectively, the rear end side of the substantially flat bracket has a means which is characterized in that it is fastened and fixed by bolts to the cross member via the floor panel .
[0008]
The vehicle seat mounting structure of the present invention according to claim 2, wherein, in the vehicle seat mounting structure according to claim 1, in the substantially flat bracket and a means, characterized in that the reinforcing bead is formed.
[0009]
Operation 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 with 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, and the rear of the substantially flat bracket. Since the end side is fastened and fixed to the cross member by bolts via the floor panel, the load applied to the slide rail via the seat belt and buckle at the time of frontal collision is the rear part provided at the rear end of the lower rail in the slide rail Through the seat leg, on the floor panel, and then the rear seat leg 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 disposed in the vicinity of the rear seat leg, it is possible to obtain a holding force at the time of a vehicle front collision by using the strength of the cross member.
[0010]
In addition, a flat plate bracket is used as a bracket that is arranged on the upper surface of the floor panel and connects the rear seat leg and the cross member arranged behind it, so that the foot floor of the rear seat occupant is kept flat. The substantially flat bracket is not only fastened and fixed with bolts to the cross member at the rear end side through the floor panel, but the front end side is also sandwiched between the rear seat leg and the floor panel. Therefore, the rigidity of the floor portion is increased, thereby obtaining the effect of suppressing the vibration of the seat when the vehicle is traveling.
Further, since it is not necessary to extend the slide rail, it is possible to easily put the seat with the slide rail into the vehicle compartment when the seat is attached to the vehicle.
[0011]
Further , as described above, a single flat bracket constitutes a bracket that connects the cross member with both rear seat legs provided at the rear ends of the lower rails of the inner side slide rails of the left and right seats of the vehicle seat. Therefore, the number of parts is reduced and the substantially flat bracket is widened in the vehicle width direction, so that the rigidity of the floor portion is further increased, thereby enhancing the vibration suppression effect of the seat during vehicle travel. Will be able to.
[0012]
The vehicle seat mounting structure of the present invention according to claim 2, wherein, Oite to claim 1, as described above, the the substantially flat bracket that reinforcing beads are formed, the rigidity of the floor portion even higher Thus, the vibration suppression effect of the seat when the vehicle is traveling can be further enhanced.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. The embodiment of the invention corresponds to the invention described in claim 3.
FIG. 1 is a rear perspective view 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 longitudinal 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 plate bracket).
[0014]
More specifically, as shown in FIG. 2, the vehicle seat 2 constitutes a front seat that can seat up to three people, and a left seat 21 and a wider right seat 22 are separated. Is formed.
The left seat 21 includes a seat back 21c and a headrest 21d that can be reclined by operating the seat cushion 21a and the reclining device 21b, and the right seat 22 is reclining by operating a wider seat cushion 22a and a reclining device (not shown). A possible seat back 22c, a headless 22d, and a seat back 22b serving as an armrest are provided.
[0015]
The left and right seats 21, 22 are mounted on the floor panel 1 by outer slide rails 23, 24 and inner slide rails 25, 26, respectively, and can be slid in the front-rear direction by operating the slide levers 27, 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, 22g denotes a seat belt provided with a right seat tongue 22h.
[0016]
The outer side slide rails 23 and 24 and the inner side slide rails 25 and 26 have movable upper rails 23a, 24a, 25a and 26a fixed to the seat cushions 21a and 22a, respectively, while the fixed side lower rails 23b, 24b and 25b, 26b is fixed to the floor panel 1 side through a front seat leg 29a and a rear seat leg 29b fixed to both front and rear ends. The buckles 21e, 22e, and 22f are provided with their base portions fixed to the movable upper rails 25a and 26a of the inner slide rails 25 and 26.
[0017]
As shown in FIG. 3, the floor panel 1 on which both the seats 21 and 22 are arranged has a step portion in which the feet of the front seat occupant are lower and the rear portion is higher. The front seat legs 29a are fastened and fixed to the mount bracket 12 fixed to the base plate by bolts 13, respectively.
[0018]
A gasoline tank 5 is disposed below the step portion of the floor panel 1, and the cross member 3 is disposed on the floor at the rear position of the gasoline tank 5 in order to secure a space for the gasoline tank 5. Arranged on the lower surface side of the panel 1, the cross member 3 is thus arranged at a position away from the rear seat leg 29 b by a predetermined distance rearward. The cross member 3 is formed in a cylindrical shape having a square cross section by a main body portion 3a having a substantially U-shaped cross section and a reinforcement 3b that closes the upper surface opening.
[0019]
Therefore, the rear seat legs 29 b and 29 b on the inner slide rails 25 and 26 side are fixed to the cross member 3 via the bracket 4. The bracket 4 constitutes a substantially flat bracket, and is reinforced by forming a reinforcing bead 4a during press molding of a flat plate, as shown in FIGS.
[0020]
That is, as shown in FIGS. 1 and 3, the bracket 4 includes the positions of the rear seat legs 29 b and 29 b provided at the rear ends of the lower rails 25 b and 26 b of the inner slide rails 25 and 26 and the cross member 3. The rear seat legs 29b and 29b are disposed on the upper surface of the floor panel 1 between the left and right sides of the bracket 4 with the weld bolts 6 and 6 being attached to the floor panel 1 with the rear seat legs 29b and 29b, respectively. In addition to being fastened and fixed, the rear end side of the bracket 4 is fastened and fixed to the reinforcement 3 b of the cross member 3 by bolts 7, 7, 7 and 7 via the floor panel 1. Further, the tongue portions 29 c of both rear seat legs 29 b and 29 b are fastened and fixed to the floor panel 1 by weld bolts 8 and 8.
[0021]
Next, operations and effects 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 located behind the rear seat legs 29b and 29b provided at the rear ends of the lower rails 25b and 26b of the inner slide rails 25 and 26. In a state where the left and right side portions on the front end side of the bracket 4 arranged on the upper surface of the floor panel 1 between the cross member 3 arranged on the lower surface side of the panel 1 and the rear seat legs 29b, 29b are sandwiched, 29 b is fastened and fixed to the floor panel 1 by weld bolts 6, 6, 8, and 8, and the rear end side of the bracket 4 is connected to the reinforcement 3 b 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 first applied to the floor panel 1 via the rear seat leg 29b (29b) provided at the rear end of the lower rail 26b (25b) in the inner slide rail 26 (25), and The floor panel 1 and the cross member 3 are firmly supported via the bracket 4 that connects the rear seat leg 29b (29b) and the cross member 3 disposed behind the rear seat leg 29b (29b).
Therefore, even in a vehicle having a structure in which the cross member 3 cannot be disposed in the vicinity of the rear seat legs 29b and 29b, it is possible to secure a holding force at the time of a vehicle front collision using the strength of the cross member 3. An effect is obtained.
[0022]
In addition, a substantially flat bracket is used as a bracket 4 that is disposed on the upper surface of the floor panel 1 and connects the rear seat legs 29b and 29b and the cross member 3 disposed behind the rear seat legs 29b, 29b, thereby allowing the foot floor of the rear seat occupant to The bracket 4 is not only fastened and fixed to the cross member 3 via the floor panel 1 by bolts 7, 7, 7, 7, but also at the left and right sides of the front end side of the bracket 4. Since both sides are also fastened and fixed by weld bolts 6, 6, 8, and 8 in a state of being sandwiched between the rear seat legs 29b and 29b and the floor panel 1, the rigidity of the floor portion is increased. An effect is obtained that vibrations of both the seats 21 and 22 can be suppressed when the vehicle is traveling.
[0023]
In addition, as described above, the bracket 4 that connects the rear member seat legs 29b and 29b provided at the rear ends of the lower rails 25b and 26b in the left and right seats 21 and 22 and the cross member 3 is configured by a single bracket. 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 enhancing the vibration suppression effect of the seat during vehicle travel. It becomes like this.
[0024]
Further, as described above, the reinforcement beads 4a are formed on the bracket 4, so that the rigidity of the floor portion is further increased, and thereby the vibration suppression effect of the seat during vehicle travel can be further enhanced. It becomes like this.
Further, as described above, the arrangement position of the cross member 3 is not limited by the position of the vehicle seat 2, so that the degree of freedom of component layout 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, the bracket 4 that connects the rear member legs 29b, 29b provided at the rear ends of the lower rails 25b, 26b of the left and right seats 21, 22 and the cross member 3 with a single bracket. 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 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 side view of a main part showing a vehicle seat mounting structure according to an embodiment of the invention.
FIG. 4 is a longitudinal 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 Body part 3b Reinforce 4 Bracket (substantially flat bracket)
4a Reinforcing bead 5 Gasoline tank 6 Weld bolt 7 Bolt 8 Weld bolt 11 Step front wall 12 Mount 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 side Seat 22a Seat cushion 22b Seat back 22c also serving as an armrest Seat back 22d Headrest 22e Right seat buckle 22f Center seat buckle 22g Seat belt 22h Right seat tongue 23 Outer side slide rail 23a Movable upper rail 23b Fixed side lower rail 24 Outer side Slide rail 24a Movable side upper rail 24b Fixed side lower rail 25 Inner side slide rail 25a Movable side 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 (2)

In the vehicle seat in which the lower rail of the slide rail is fixed to the upper surface side of the floor panel through the seat leg and the seat belt buckle is attached to the inner side slide rail, the lower rail is provided at the rear end of the inner side slide rail. Further, a cross member is disposed on the lower surface side of the floor panel behind the rear seat leg, and both the rear seat legs provided at the rear ends of the lower rails of the inner side slide rails in the left and right seats of the vehicle seat and the cross member between, and the is disposed substantially flat brackets on the upper surface of the floor panel between the two rear seat leg including both rear seat leg, the two rear seat leg of the front end side of the substantially flat plate bracket while sandwiched respectively There is fastened and fixed by bolts to the floor panel, respectively Vehicle seat mounting structure, wherein a rear end side of the substantially flat bracket is fastened and fixed by bolts to the cross member via the floor panel. The vehicle seat mounting structure according to claim 1, wherein a reinforcing bead is formed on the substantially flat bracket.

Images