JP4083314B2 - Automotive seat - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automobile seat for safety of an occupant, and more particularly to a seat structure for protecting an occupant sitting on a seat from an external impact on the automobile.
[0002]
[Prior art]
As shown in FIG. 10, a conventional automobile seat has a side collision pipe 2 that extends horizontally along the width direction of the vehicle body at the bottom of a cushion frame 1 that constitutes a seat cushion of the automobile seat. By reinforcing the strength in the width direction of the seat, the occupant sitting on the seat is protected from the side impact applied to the automobile.
[0003]
Further, a front impact reinforcement 3 extending horizontally inside the cushion frame 1 is installed, and when an impact is applied from the front to the traveling automobile, the occupant sitting on the seat is turned forward by inertial force. As a result, the load applied downward to the front end of the seat is received.
[0004]
In FIG. 10, 4A and 4B are slide rails connected to the cushion frame 1 for sliding the seat in the front-rear direction.
[0005]
[Problems to be solved by the invention]
As described above, the conventional automobile seat has a side impact pipe 2 and a front impact reinforcement 3 that are attached to the cushion frame 1 when an impact is applied to the automobile from the side or the front. This protects the passenger sitting on the seat from the impact.
[0006]
However, the side impact pipe 2 is effective when a lateral impact on the automobile is applied in a parallel and horizontal direction with respect to the width direction of the vehicle body. When applied from a direction having an angle, the direction in which the impact is applied deviates from the axial direction of the side impact pipe 2, so that a so-called rolling occurs in the side impact pipe 2, and the impact can be effectively received. Absent.
[0007]
Further, as can be seen from FIG. 10, the side collision pipe 2 has a gap s between its both ends and the adjacent slide rails 4A and 4B. The approach speed of the coming vehicle door cannot be reduced.
[0008]
Further, since both ends of the front impact reinforcement 3 are respectively connected to the inner wall portions on both sides of the cushion frame 1, the cushion frame 1 is deformed by an external impact applied to the traveling vehicle. There are various problems that cannot be prevented.
[0009]
The present invention has been made to solve the problems of the conventional automobile seat.
That is, an object of the present invention is to provide an automobile seat that can protect an occupant sitting on the seat from impacts from all directions applied to the automobile.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a vehicle seat according to a first aspect of the present invention has a vehicle body width direction in which a vehicle seat is attached to at least a front portion and a rear portion of a bottom portion of a frame member provided in a cushion portion of the vehicle seat. The reinforcing member is fixed so as to be parallel to each other , and a bracket member is externally fitted to at least the end portion of the center side of the vehicle body so as to cover the lower side of the end portion. The bracket member is fixed to a seat support member attached to the floor surface of the vehicle body to support an automobile seat, and the bracket member is formed so that its lower surface is the longest in the vehicle width direction. It is characterized by being.
[0011]
In the automobile seat according to the first invention, when an impact is applied from the side to the automobile to which the automobile seat is attached, the impact is received by a reinforcing member disposed in parallel with the width direction of the vehicle body. In addition, the frame member built in the cushion portion is prevented from being deformed by an impact by the reinforcing member, and the width of the seat on which the occupant sits is ensured.
[0012]
The both ends of the reinforcing member are fixed to the seat support member that supports the automobile seat on the floor of the vehicle body, so that the direction in which the impact is applied to the automobile is an angle with respect to the width direction or the horizontal direction of the vehicle body. Even if it has, this impact is reliably received by the reinforcing member.
[0013]
Furthermore, since no gap is formed between the reinforcing member and the seat supporting member, the door acts to prevent the door from entering due to an impact from the side of the automobile.
Furthermore, since both ends of the reinforcing member are fixed to the sheet support member, even when a force acts to cause the sheet to fall over the automobile seat due to a side impact on the automobile, The fall of the sheet is prevented.
[0014]
For the impact from the front of the car, the downward load applied to the front part of the cushion part when the occupant sitting on the car seat turns forward due to the impact is fixed to the front part of the bottom part of the frame member While being received by the reinforcing member, the frame member is prevented from being deformed by the downward load.
[0015]
As described above, according to the first aspect of the present invention, the frame member is prevented from being deformed to secure a seating space for an occupant sitting on the vehicle seat and to receive an impact from all directions applied to the vehicle. It is possible to ensure the safety of the passenger sitting on the seat.
[0016]
Automotive seat according to the second invention, in order to achieve the object, in addition to the configuration of the first invention, the bracket member may be the front shape of a box type of triangle.
[0017]
In addition to the effects of the first invention, the automotive seat according to the second invention has a contact area between the bottom of the bracket member attached to the end of the reinforcing member on the vehicle body center side and the lower surface of the reinforcing member. Due to the large size, even if a bending force is applied to the reinforcing member due to a side impact applied to the automobile, the reinforcing member is prevented from being bent. It is prevented from being damaged.
[0018]
As described above, according to the second invention, when an impact is applied to the automobile from the side, the cushion portion and the seat support portion are prevented from being damaged and the original shape of the automobile seat is maintained. It is possible to ensure the safety of the passenger sitting on the seat.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment that is considered to be most suitable for the present invention will be described in detail with reference to the drawings.
[0020]
FIG. 1 is a perspective view showing an example of an embodiment of an automobile seat according to the present invention, FIG. 2 is a plan view showing a cushion pan of the automobile seat, FIG. 3 is a front view of the cushion pan, and FIG. The rear view of the cushion pan and FIG. 5 are left side views of the cushion pan.
[0021]
1 shows a driver seat of a right-hand drive vehicle, while FIGS. 2 to 5 show a passenger seat.
In FIG. 1, an automobile seat 10 is configured by tilting a seat back 11 to a cushion 13 via a reclining device 12.
[0022]
Inside the cushion 13 is housed a container-like cushion pan 14 having a planar shape shown in FIGS.
Further, a steel reinforcing material 15 formed in a beam shape is arranged on the front lower surface of the bottom portion of the cushion pan 14 so as to be parallel to the width direction of the cushion pan 14, and the upper surface extends over substantially the entire length. In the state joined to the bottom surface of the cushion pan 14, it is fixed by welding.
[0023]
Further, a steel reinforcing member 16 formed in a beam shape is arranged on the rear lower surface of the bottom portion of the cushion pan 14 so as to be parallel to the width direction of the cushion pan 14 in the same manner as the reinforcing member 15. Is fixed to the bottom surface of the cushion pan 14 by welding for substantially the entire length.
[0024]
The reinforcing member 15 has a box-shaped triangular bracket 15A formed so that the front shape is a right triangle at the end on the vehicle body center side (left side in FIG. 3), and the end of the reinforcing member 15 on the inner side. The bracket 15B has a U-shaped cross section at the end on the door side (right side in FIG. 3), and reinforces the flange 15Ba formed horizontally at the lower end. The material 15 is externally fitted and fixed in contact with the lower surface.
[0025]
Similarly, the reinforcing member 16 has a box-shaped triangular bracket 16A formed at the end on the vehicle body center side (right side in FIG. 4) so that the front shape is a right triangle. The flange 16Ba is fixed with the end portion fitted therein, and a bracket 16B having a U-shaped cross section at the end portion on the door side (left side in FIG. 4), and formed at the lower end portion thereof in an inward horizontal direction. In a state where the reinforcing material 16 is in contact with the lower surface, it is externally fitted and fixed.
[0026]
The reinforcing members 15 and 16 are positioned between a seat adjuster 17 attached to the vehicle body center side of the floor surface of the vehicle body in the front-rear direction and a seat adjuster 18 attached to the door side in the front-rear direction. The end is fixed to the slider 17A of the seat adjuster 17, and the end on the door side is fixed to the slider 18A of the seat adjuster 18, so that the cushion pan 14, that is, the cushion 13 is slidably supported on the seat adjusters 17 and 18. Has been.
The attachment state of the reinforcing members 15 and 16 and the seat adjusters 17 and 18 will be described in more detail with reference to FIG.
[0027]
FIG. 6 shows an attached state of the reinforcing member 16, and the end of the reinforcing member 16 on the vehicle body center side is bolted by a bolt 19, so that the triangular bracket 16 </ b> A fixed to this end is attached. And is firmly fixed to the slider 17A of the seat adjuster 17.
[0028]
Further, the door-side end portion of the reinforcing member 16 is firmly fixed to the slider 18 </ b> A of the seat adjuster 18 through the bracket 16 </ b> B fixed to the end portion by bolting with the bolt 20.
Both ends of the reinforcing member 15 are also firmly fixed to the slider 17 </ b> A of the sheet adjuster 17 and the slider 18 </ b> A of the sheet adjuster 18 in the same manner as the reinforcing member 16.
[0029]
The above-described automobile seat 10 safely protects an occupant sitting on the seat from impacts applied to the automobile from the side and the front by the reinforcing members 15 and 16.
[0030]
That is, when an impact is applied to the automobile from the side, the impact is received by the reinforcing material 15 and the reinforcing material 16 and is welded in a state where the reinforcing materials 15 and 16 are joined to the bottom surface of the cushion pan 14. By doing so, the cushion pan 14 is prevented from being deformed, and the shape of the seat on which the occupant sits is ensured.
[0031]
At this time, by using the reinforcing members 15 and 16 having a large cross-sectional area, it is possible to receive a larger impact, so when the door enters, the approach speed decreases and the seat sits on the seat. The impact on the passenger's body is alleviated.
[0032]
And since the both ends of the reinforcing members 15 and 16 are fixed to the sliders 17A and 18A of the seat adjusters 17 and 18, the direction in which the impact is applied to the automobile is relative to the width direction or the horizontal direction of the vehicle body. Even when it has an angle and deviates from the mounting direction of the reinforcing members 15 and 16, so-called rolling is prevented from occurring in the reinforcing members 15 and 16, and the impact from the side applied to the automobile is reliably received. In addition, since no gap is formed between the reinforcing members 15 and 16 and the seat adjusters 17 and 18, the entrance of the door due to an impact from the side of the automobile is prevented.
[0033]
Further, since both end portions of the reinforcing members 15 and 16 are fixed to the sliders 17A and 18A of the sheet adjusters 17 and 18, respectively, as shown in FIG. Even when a so-called turn-up load v is applied to cause the seat to fall over, the seat 10 is prevented from overturning and passenger safety is achieved.
[0034]
In addition, as shown in FIG. 8, when the passenger sitting on the seat 10 turns forward due to the impact from the front of the automobile, a downward load w acts on the front portion of the cushion 13. Even if it exists, since all the upper surfaces of the reinforcing material 15 are joined to the bottom surface of the cushion pan 14 and both ends are fixed to the sliders 17A and 18A, the downward load w can be received and the cushion pan 14 can be received. Is prevented, and passenger safety is achieved.
[0035]
Furthermore, the reinforcing members 15 and 16 have their ends on the vehicle body center side fixed to sliders 17A and 18A via triangular brackets 15A and 16A, respectively. When a force is applied to cause the seat 10 to fall toward the center of the vehicle body, bending of the reinforcing members 15 and 16 due to the bending stress due to this force is prevented.
[0036]
That is, when the ends of the reinforcing members 15 and 16 on the vehicle body center side are fixed to the sliders 17A and 18A via brackets shaped like the bracket 15B or 16B attached to the door side, for example. As shown in FIG. 11, the bending force acts on the reinforcing member 15 or 16 with the tip of the flange Ba in contact with the lower surface of the bracket B as a fulcrum, and the seat adjusters 17 and 18 lie sideways. There is a fear.
[0037]
In contrast, the automobile seat has a large contact area between the bottoms of the triangular brackets 15A and 16A attached to the ends of the reinforcing members 15 and 16 on the vehicle body center side and the lower surfaces of the reinforcing members 15 and 16. Even if a bending force is applied to the reinforcing members 15 and 16, the reinforcing members 15 and 16 are prevented from being deformed and the seat adjusters 17 and 18 from being overturned.
[0038]
Note that the automobile seat is easily assembled because the reinforcing members 15 and 16 are fixed to the sliders 17A and 18A by bolting.
[0039]
Further, the height of the cushion 13 can be arbitrarily set by selecting the heights of the reinforcing members 15 and 16.
The reinforcing members 15 and 16 may be formed in a solid shape inside, but may be formed in a hollow shape having grooves 15a or 16a inside as shown in FIG. As a result, the weight of the reinforcing members 15 ′ and 16 ′ can be reduced while maintaining the strength.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of an embodiment of an automobile seat to which a safety device according to the present invention is attached.
FIG. 2 is a plan view showing a cushion pan to which a reinforcing material for the vehicle seat is attached.
FIG. 3 is a front view showing a cushion pan to which the reinforcing material is attached.
FIG. 4 is a rear view showing a cushion pan to which the reinforcing material is attached.
FIG. 5 is a left side view showing a cushion pan to which the reinforcing material is attached.
FIG. 6 is a rear view showing a mounting state of the reinforcing member and the sheet adjuster in the same example.
FIG. 7 is an explanatory view showing a turning load acting on the automobile seat.
FIG. 8 is an explanatory diagram showing a downward load acting on the front portion of the automobile seat.
FIG. 9 is a cross-sectional view showing another example of a reinforcing material.
FIG. 10 is a diagram showing a conventional example.
FIG. 11 is an explanatory view showing a deformed state of a reinforcing material.
[Explanation of symbols]
10 ... Automobile seat 13 ... Cushion (cushion part)
14 ... Cushion pan (frame member)
15, 16 ... Reinforcing material (reinforcing member)
15A, 16A ... Triangle bracket (bracket member)
15B, 16A ... Brackets 17, 18 ... Seat adjuster (Seat support member)
17A, 18A ... Slider (sheet support member)

Claims (2)

A reinforcing member is fixed to at least a front part and a rear part of a bottom part of a frame member installed in a cushion part of an automobile seat so as to be parallel to a width direction of a vehicle body to which the automobile seat is attached,
A bracket member is externally fitted to at least the end of each reinforcing member on the center side of the vehicle body so as to cover the lower side of the end,
The reinforcing member via the bracket member is fixed to the seat supporting member mounted on the floor of the vehicle body for supporting the vehicle seat,
The bracket member is formed such that its lower surface is the longest in the vehicle width direction.
An automotive seat characterized by that. The vehicle seat according to claim 1, wherein the bracket member is a box shape having a triangular front shape.

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