JP2004025940A - Seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle seat in which a lower catch bracket and an upper catch bracket, even if not having high precision, are surely engaged with each other when input is given from a safety belt anchor. <P>SOLUTION: The seat comprises a fixed rail, a movable rail 5, the lower catch bracket 6 supported by the fixed rail, and the upper catch bracket 7 with one end 7a held by the movable rail 5 and the other end 7b engaged with the lower catch bracket 6. The upper catch bracket 7 and the lower catch bracket 6 are respectively formed with protrusions 26, 27 capable of engaging with each other only when predetermined load due to collision is applied to the safety belt anchor. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat such as an automobile, a ship, an aircraft, a railway vehicle, and more particularly to a vehicle seat provided with a safety belt.
[0002]
[Prior art]
As this type of vehicle seat, for example, as shown in Japanese Utility Model Laid-Open Publication No. 4-96567, a fixed rail arranged along the front-back direction in the vehicle cabin, and movable in the front-rear direction with respect to the fixed rail A movable rail engaged with the movable rail, a seat cushion frame disposed on the movable rail, a lower catcher bracket supported by a floor member near a rear end of the fixed rail, and the movable rail or the seat cushion. At least one sliding device, one of which is held by the frame and the other of which is engaged with the lower catcher bracket, and which comprises at least an upper catch bracket provided with a safety belt anchor. Only when a specified load is applied to the belt anchor due to collision, the lower catcher bracket and upper A plurality of teeth formed by formed pitch bracket mutually are engageable.
[0003]
[Problems to be solved by the invention]
However, in such a conventional technique, since the lower catcher bracket and the upper catch bracket are formed with a plurality of teeth, the front-rear dimension between the fixed rail and the movable rail is deviated due to the accuracy of parts. Therefore, there is a possibility that a plurality of teeth at an angle may not be engaged with each other, so that high component accuracy is required. That is, there is a possibility that the cost may rise due to a demand for higher component accuracy.
[0004]
Therefore, the present invention has been made by paying attention to such a conventional technique, and the lower catcher bracket and the upper catch bracket are securely engaged with each other at the time of input from the safety belt anchor even if the precision is not high. To provide a vehicle seat.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a fixed rail disposed along a front-rear direction in a vehicle interior, a movable rail movably engaged with the fixed rail in a front-rear direction, and A seat cushion frame provided, a lower catcher bracket supported by a floor member near a rear end of the fixed rail, and one of the lower catcher brackets being held by the movable rail or the seat cushion frame and the other being the lower catcher bracket In a vehicle seat including at least a slide device including at least an upper catch bracket provided with a safety belt anchor provided with a safety belt anchor, a predetermined load accompanying a collision is applied to the safety belt anchor. The upper catch bracket and the lower cap can be engaged only when Comprising respectively formed on the catcher bracket.
[0006]
According to the first aspect of the present invention, the convex portions formed on the upper catch bracket and the lower catcher bracket are engaged with each other only when a predetermined load accompanying the collision is applied to the safety belt anchor. Even if the positions of the mutually projecting portions are not highly accurate, the lower catcher bracket and the upper catch bracket will surely engage with each other at the time of input from the safety belt anchor.
[0007]
The invention according to claim 2 is the vehicle seat according to claim 1, wherein the protrusion formed on the upper catch bracket projects toward the inside of the seat, and the lower catcher bracket The formed protrusions protrude toward the outside of the sheet, and the two protrusions are always separated from each other.
[0008]
According to the second aspect of the present invention, in addition to the effect of the first aspect, when the upper catcher bracket moves in a direction in which the upper catcher bracket is lifted by the safety belt anchor, a convex portion of the upper catcher bracket is formed on the lower catcher bracket. When the safety belt anchor is securely engaged and no load is applied to the safety belt anchor, the two protrusions are always separated, and the movable rail moves smoothly back and forth with respect to the fixed rail. Will not be.
[0009]
According to a third aspect of the invention, there is provided a fixed rail disposed along the front-rear direction in the vehicle interior, a movable rail movably engaged with the fixed rail in the front-rear direction, and A seat cushion frame provided, a lower catcher bracket supported by a floor member near a rear end of the fixed rail, and one of the lower catcher brackets being held by the movable rail or the seat cushion frame and the other being the lower catcher bracket In a vehicle seat including at least a slide device including at least an upper catch bracket provided with a safety belt anchor provided with a safety belt anchor, a predetermined load accompanying a collision is applied to the safety belt anchor. The upper catch bracket has a convex portion so that it can engage with each other only when Ri, the lower catcher bracket, the recess is formed.
[0010]
According to the third aspect of the present invention, the convex portion formed on the upper catch bracket engages with the concave portion formed on the lower catcher bracket only when a predetermined load accompanying the collision is applied to the safety belt anchor. Therefore, the lower catcher bracket and the upper catch bracket are reliably engaged with each other when inputting from the safety belt anchor, even if the positions of the protrusions and the recesses are not highly accurate.
[0011]
According to a fourth aspect of the present invention, there is provided the vehicle seat according to the third aspect, wherein the convex portion formed on the upper catch bracket projects toward the inside of the seat. The formed concave portion is formed to be concave toward the outside of the sheet, and the convex portion and the concave portion are always separated.
[0012]
According to the fourth aspect of the invention, in addition to the effect of the third aspect, when the upper catcher bracket moves in a direction in which the upper catcher bracket is lifted by the safety belt anchor, a convex portion of the upper catcher bracket is formed on the lower catcher bracket. When the load is not applied to the safety belt anchor, the protrusion and the recess are always separated, and the movable rail moves smoothly with respect to the fixed rail in the longitudinal direction. Will not be.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Note that FR will be described as a front side, RR as a rear side, UP as an upper side, and LWR as a lower side.
[0014]
FIGS. 1 to 5 show an embodiment of the present invention. Reference numeral 1 denotes a vehicle device, for example, a seat device for a vehicle, and a sliding device 8 for moving in a front-rear direction and a movable device of the sliding device 8. And a seat device 9 movably provided along the rail 5.
[0015]
The slide device 8 is disposed along both front FR and rear RR directions (hereinafter, simply referred to as front and rear directions) in the vehicle compartment, and is mounted on a floor (not shown) by brackets 2 and 3 held at front and rear ends thereof. The fixed rail 4 held, the movable rail 5 engaged with the fixed rail 4 so as to be movable in the front-rear direction, and the front end 3a held at the rear end 4a of the fixed rail 4 A lower catcher bracket 6 supported by welding at a rear end 3b of the bracket 3; a movable rail 5 having one 7a held by a rivet 12 and the other 7b engaged with an engaging portion 6a of the lower catcher bracket 6; And an upper catch bracket 7. The phrase “at least configured” in the slide device 8 also means a lock mechanism that stops the movable rail 5 at an appropriate position with respect to the fixed rail 4 and locks, a cap that covers the brackets 2 and 3, and the like. This is because there are many constituent members, but since they are well known, illustration and description are omitted.
[0016]
Outside the upper catch bracket 7, a cushion frame mounting bracket 11 formed with a safety belt anchor 10 supporting a safety belt (not shown) is overlapped and held by rivets 12. Reference numeral 15 denotes a through hole through which the rivet 12 can be inserted.
[0017]
On the other side 7b of the upper catch bracket 7 and the engaging portion 6a of the lower catcher bracket 6, convex portions 25 and 26 which can be engaged with each other only when a predetermined load accompanying a collision is applied to the safety belt anchor 10 are provided. Each is formed. The convex portion 26 formed on the upper catch bracket 7 protrudes toward the inside of the seat device 9, that is, toward the center side CL of the seat device 9, and the convex portion 25 formed on the lower catcher bracket 6 , Protruding toward the outside of the seat device 9, and the two convex portions 25, 26 are always separated from each other.
[0018]
An intervening member 13 of the seat device 9 is supported by a bolt 14 on the safety belt anchor 10 of the cushion frame mounting bracket 11. The surface 10a of the cushion frame mounting bracket 11 where the safety belt anchor 10 is formed is bent inward, that is, toward the center side CL of the seat device 9.
[0019]
The seat device 9 has a cushion frame 17 in which the horizontal slide devices 16 and 16 are incorporated via the intervening member 13 and is formed in a rectangular shape in a top view. (Not shown) is covered to form a seat cushion on which an occupant (not shown) can be seated, and a seat back frame 22 is supported on a UP above the cushion frame 17 via a link 21. The seat (back) is formed such that an occupant (not shown) can lean against the pad by covering the pad (not shown) and the skin (not shown) with the wire 23 provided on the vehicle. Reference numeral 24 denotes a slide inner bracket, which is supported on the movable rail 5 by the rivet 12. Reference numeral 18 denotes a safety belt buckle supported on the side of the cushion frame 17.
[0020]
Next, the operation according to this embodiment will be described.
[0021]
The convex portions 25 and 26 formed on the upper catch bracket 7 and the lower catcher bracket 6, respectively, engage with each other only when a predetermined load is applied to the safety belt anchor 10 due to a collision. Even if the positions of 25 and 26 do not have high accuracy, the lower catcher bracket 6 and the upper catch bracket 7 will surely engage with each other when inputting from the safety belt anchor 10.
[0022]
When the upper catcher bracket 7 is moved in the direction in which it is lifted by the safety belt anchor 10, the convex portion 26 of the upper catcher bracket 7 securely engages with the convex portion 25 formed on the lower catcher bracket 6, thereby ensuring safety. When no load is applied to the belt anchor 10, the two convex portions 25, 26 are always separated from each other, so that the movable rail 5 can smoothly move back and forth with respect to the fixed rail 4, and does not hinder the slide.
[0023]
Since the upper catch bracket 7 holds the cushion frame mounting bracket 11 having the safety belt anchor 10 formed thereon, the cushion frame mounting bracket 11 is used when the safety belt anchor 10 is input via a safety belt (not shown). It has the strength to withstand the load and can directly transmit the load to the catcher brackets 6 and 7 outside the movable rail 5. Further, since the safety belt anchor 10 is arranged inside the movable rail 5, that is, at the center side CL of the seat device 9, the safety belt anchor 10 does not interfere with the members of the seat device 1 because there is no protrusion outside the movable rail 5. become.
[0024]
Since the upper catcher bracket 7 engaged with the lower catcher bracket 6 is held by the cushion frame mounting bracket 11, not only can it withstand a load, but also the intervening member 13 is attached to the safety belt anchor 10 of the bracket 11. By being tightened together, no deformation due to the load occurs.
[0025]
The surface 10a of the cushion frame mounting bracket 11 where the safety belt anchor 10 is formed is bent inward, that is, toward the center side CL of the seat device 9, so that the surface 10a of the surface where the safety belt anchor 10 is formed is It is effective in preventing deformation even when a strong load is applied due to an increase in strength.
[0026]
Since the cushion frame mounting bracket 11 and the upper catch bracket 7 are fixed from the outside by the rivets 12, fixing workability is remarkably improved.
[0027]
FIG. 6 shows another embodiment of the present invention, and is a cross-sectional view corresponding to FIG. The other side 7b of the upper catch bracket 7 and the engaging portion 6a of the lower catcher bracket 6 can be engaged with each other only when a predetermined load accompanying a collision is applied to the safety belt anchor 10. The lower catcher bracket 6 has a concave portion 28 formed thereon.
[0028]
The convex portion 27 formed on the upper catch bracket 7 protrudes toward the inside of the seat device 9, that is, toward the center side CL of the seat device 9, and the concave portion 28 formed on the lower catcher bracket 6 includes: The lower catcher bracket 6 is formed so as to be recessed toward the outside of the seat device 9 at the corner of the engagement portion 6a of the lower catcher bracket 6, and the projection 27 and the recess 28 are always separated.
[0029]
According to this embodiment, only when a predetermined load accompanying a collision is applied to the safety belt anchor 10, the convex portion 27 formed on the upper catch bracket 7 is in the concave portion 28 formed on the lower catcher bracket 6. Since the engagement is performed, the lower catcher bracket 6 and the upper catch bracket 7 are surely engaged with each other at the time of input from the safety belt anchor 10 even if the positions of the protrusions 27 and the recesses 28 are not accurate.
[0030]
When the upper catcher bracket 7 moves in the direction in which it is lifted by the safety belt anchor 10, the convex portion 27 of the upper catcher bracket 7 securely engages with the concave portion 28 formed in the lower catcher bracket 6, and the safety belt anchor When no load is applied to 10, the convex portion 27 and the concave portion 28 are always separated from each other, so that the movable rail 5 can smoothly move back and forth with respect to the fixed rail 4, and does not hinder the slide.
[0031]
【The invention's effect】
According to the first aspect of the present invention, the convex portions formed on the upper catch bracket and the lower catcher bracket are engaged with each other only when a predetermined load accompanying the collision is applied to the safety belt anchor. Even if the positions of the mutually convex portions are not high in accuracy, the lower catcher bracket and the upper catch bracket will surely engage with each other at the time of input from the safety belt anchor.
[0032]
According to the second aspect of the present invention, in addition to the effect of the first aspect, when the upper catcher bracket moves in a direction in which the upper catcher bracket is lifted by the safety belt anchor, a convex portion of the upper catcher bracket is formed on the lower catcher bracket. When the safety belt anchor is securely engaged and no load is applied to the safety belt anchor, the two protrusions are always separated, and the movable rail moves smoothly back and forth with respect to the fixed rail. Will not be.
[0033]
According to the third aspect of the present invention, the convex portion formed on the upper catch bracket engages with the concave portion formed on the lower catcher bracket only when a predetermined load accompanying the collision is applied to the safety belt anchor. Therefore, the lower catcher bracket and the upper catch bracket surely engage with each other when inputting from the safety belt anchor even if the positions of the protrusions and recesses are not accurate.
[0034]
According to the fourth aspect of the invention, in addition to the effect of the third aspect, when the upper catcher bracket moves in a direction in which the upper catcher bracket is lifted by the safety belt anchor, a convex portion of the upper catcher bracket is formed on the lower catcher bracket. When the load is not applied to the safety belt anchor, the protrusion and the recess are always separated, and the movable rail moves smoothly with respect to the fixed rail in the longitudinal direction. Will not be.
[Brief description of the drawings]
FIG. 1 is a rear perspective view of a skeleton of a vehicle seat device according to an embodiment of the present invention.
FIG. 2 is an enlarged perspective view of a main part of FIG.
FIG. 3 is an enlarged exploded perspective view of a main part of FIG. 2;
FIG. 4 is a side view according to the illustrated DA of FIG. 1;
FIG. 5 is a sectional view taken along line SB-SB in FIG. 4;
FIG. 6 is a sectional view corresponding to FIG. 5, according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vehicle seat device 4 as "vehicle" 4 Fixed rail 5 Movable rail 6 Lower catcher bracket 6a Engagement part 7 Upper catch bracket 7b Other 8 Slide device 9 Seat device 10 Safety belt anchor 11 Cushion frame mounting brackets 25, 26, 27 Convex part 28 Concave part FR Front side RR Rear side UP Upper side LWR Lower side

Claims (4)

A fixed rail disposed along the front-rear direction in the vehicle interior, a movable rail movably engaged with the fixed rail in the front-rear direction, and a seat cushion frame disposed on the movable rail. A lower catcher bracket supported by a floor member near a rear end of the fixed rail; and a safety belt, one of which is held by the movable rail or the seat cushion frame and the other is engaged by the lower catcher bracket. A vehicle seat comprising at least a slide device comprising at least an upper catch bracket provided with an anchor,
A vehicle seat, characterized in that the upper catch bracket and the lower catcher bracket are formed with convex portions which can be engaged with each other only when a predetermined load accompanying a collision is applied to the safety belt anchor. The vehicle seat according to claim 1,
The projection formed on the upper catch bracket projects toward the inside of the seat,
The convex portion formed on the lower catcher bracket projects toward the outside of the seat,
The vehicle seat according to claim 1, wherein the two convex portions are always separated from each other. A fixed rail disposed along the front-rear direction in the vehicle interior, a movable rail movably engaged with the fixed rail in the front-rear direction, and a seat cushion frame disposed on the movable rail. A lower catcher bracket supported by a floor member near a rear end of the fixed rail; and a safety belt, one of which is held by the movable rail or the seat cushion frame and the other is engaged by the lower catcher bracket. A vehicle seat comprising at least a slide device comprising at least an upper catch bracket provided with an anchor,
The upper catch bracket is formed with a convex portion, and the lower catcher bracket is formed with a concave portion so that they can engage with each other only when a predetermined load accompanying a collision is applied to the safety belt anchor. Vehicle seats characterized by the following. The vehicle seat according to claim 3, wherein:
The projection formed on the upper catch bracket projects toward the inside of the seat,
The recess formed in the lower catcher bracket is formed by recessing toward the outside of the seat,
The convex and concave portions are always separated from each other.

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