JP2004082950A - Slide rail of seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide rail of a seat for a vehicle for preventing a mouth opening of a fixed rail body and buckling of an integrally formed leg part without increasing board thickness of the fixed rail main body. <P>SOLUTION: Deformation preventing brackets 20 having shapes having each lower end part reaching side surface parts on both sides of the fixed rail body in proximity states are mounted on both side surfaces in the vicinity of a front end part in a vertical wall part of a movable rail 16. As a result, the mouth opening of the fixed rail body 3 can be prevented. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a slide rail for moving a seat of a vehicle such as an automobile, a vehicle, an aircraft, a ship, and the like back and forth.
[0002]
[Prior art]
As a vehicle, for example, a slide rail for moving a car seat back and forth has a structure in which a movable rail having a seat fixed to an upper end portion is slidably attached to a fixed rail fixed to a floor. (Refer to JP-A-10-44839 as a similar technique).
[0003]
The fixed rail has a fixed rail body having an open cross-sectional structure in which a narrow opening along the longitudinal direction is formed on the upper surface, and a leg portion provided downward from the front and rear ends of the fixed rail body is fixed to the floor. By doing so, the fixed rail main body is held at a predetermined height away from the floor. The legs attached to the front and rear ends of the fixed rail main body include those integrally formed from the fixed rail main body and those mounted as separate components to the fixed rail.
[0004]
The movable rail slidably housed in the fixed rail main body has a central standing wall protruding upward from an opening of the fixed rail main body, and a seat is fixed to an upper end of the standing wall. The rear end of the movable rail generally has a seat belt fixing point, and a force acts to lift the rear end of the movable rail from the seat belt when the vehicle is suddenly braked or the like.
[0005]
[Problems to be solved by the invention]
However, in such a conventional technique, the fixed rail main body has an open cross-sectional structure having an opening on the upper surface, and the fixed rail main body itself is held in a state of floating from the floor. When a force in the lifting direction is applied from the seat belt to the end, the front end of the movable rail is pushed downward as a reaction. When the front end of the movable rail is pushed down, the fixed rail main body is lifted off the floor, so that the fixed rail main body bends downward around the point pressed by the front end of the movable rail.
[0006]
When the fixed rail main body having the open cross section bends downward, the opening near the bending point becomes “open”, and the side portions on both sides of the fixed rail main body expand outward. If the opening state is too large, the cross-sectional shape of the fixed rail main body is permanently deformed and cannot be restored to its original shape, and there is a possibility that the lock mechanism or the like installed at a position close to the side of the fixed rail main body when the fixed rail main body is spread. .
[0007]
When the front end of the movable rail is pushed down, a large load is also applied to the front leg. There is no problem in strength when the leg part as a separate part is mounted on the front end of the fixed rail body by overlapping.However, in the case of the leg part formed continuously and integrally from the fixed rail body, the boundary part with the fixed rail body is The strength is inevitably weakened, and the leg portion may buckle from there.
[0008]
The opening of the fixed rail body and the buckling of the leg portion as described above can be prevented by increasing the plate thickness of the fixed rail body and increasing the strength, but this causes an increase in weight and the workability of the fixed rail. Gets worse.
[0009]
The present invention has been made by paying attention to such conventional technology, and prevents opening of the fixed rail body and buckling of the integrally formed leg portion without increasing the thickness of the fixed rail body. The present invention is to provide a slide rail of a vehicle seat to be driven.
[0010]
[Means for Solving the Problems]
The invention according to claim 1 has a fixed rail main body having an open cross-sectional structure in which a narrow opening along a longitudinal direction is formed in an upper surface portion, and from a front-back end of the fixed rail main body to a floor side. The fixed leg body is fixed to the floor by providing the headed leg part integrally or separately with the fixed rail body, and the fixed rail body is held at a predetermined height away from the floor, A movable rail is slidably housed in the fixed rail body, and a seat fixing upright wall portion formed on the movable rail is protruded upward from an opening of the fixed rail main body. Then, a deformation preventing bracket having a shape in which the lower end goes around in close proximity to both side surfaces of the fixed rail body is attached to both side surfaces near the front end portion of the upright wall portion of the movable rail. Characterized in that was.
[0011]
According to the first aspect of the present invention, since the deformation preventing bracket attached to the movable rail has a shape in which the deformation preventing bracket wraps around the side portions on both sides of the fixed rail main body in a state of being close to each other. The opening of the fixed rail body can be prevented. Since only the deformation prevention bracket is attached, there is no significant increase in weight, and the thickness of the fixed rail body is not increased, so that the workability of the fixed rail is good.
[0012]
The invention according to claim 2 is characterized in that a flange having a surface shape perpendicular to the upright wall portion is formed vertically on the deformation prevention bracket.
[0013]
According to the second aspect of the present invention, since the deformation prevention bracket is formed with a flange having a planar shape perpendicular to the upright wall portion, the rigidity of the deformation prevention bracket itself in the opening direction is improved, and the fixed rail body is provided. The ability to prevent the mouth from opening increases.
[0014]
According to a third aspect of the present invention, the leg portion on the front end side of the fixed rail main body is integrally formed by extending at least a bottom portion of the fixed rail main body from the front end to the floor side, and the front end of the fixed rail main body. A rivet for a roller stopper, which is attached to the bottom surface of the portion with its head protruding, is extended downward to abut against the floor.
[0015]
According to the third aspect of the present invention, even when the leg portion is integrally formed from the fixed rail main body, the roller stopper rivet attached to the bottom portion of the front end portion of the fixed rail main body is extended downward to provide the floor. The rivet can receive a downward load, and can prevent buckling of the leg portion.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS.
[0017]
A well-known seat (not shown) is supported by a pair of left and right slide rails 1 so as to be able to move back and forth. In this embodiment, only the front portion of one side of the slide rail 1 is illustrated and described.
[0018]
The fixed rail 2 includes a fixed rail main body 3 and front and rear leg portions 4. The fixed rail body 3 has an open cross-sectional structure in which a narrow opening 6 is formed in the upper surface 5 along the longitudinal direction, and a downward lip 7 is formed at an edge of the opening 6. Further, a plurality of lock holes 9 with which a latch of a slide lock mechanism (not shown) is engaged are formed in the side surface portion 8 of the fixed rail main body 3.
[0019]
The leg portion 4 formed at the front end of the fixed rail main body 3 is formed integrally with the fixed rail main body 3. The leg portion 4 is formed by extending the bottom portion 10 of the fixed rail body 3 and the lower portion of the side portion 8 and has a U-shaped cross section. The rear “leg portion” (not shown) is a separate component from the fixed rail main body 3 and is attached to the rear of the fixed rail main body 3 from below.
[0020]
Then, by fixing the front and rear legs 4 to the floor 11, the fixed rail main body 3 is held at an upper position separated from the floor 11 by the height of the legs 4.
[0021]
A rivet 12 is attached to the bottom surface 10 of the front end of the fixed rail main body 3 held at the predetermined height position. The rivet 12 is attached by crushing the head 13 after penetrating the head 13 from below with respect to the bottom part 10, and the crushed head 13 travels upward as a stopper for the dictated roller 14. . The rivet 12 is long downward, and its leg 15 is larger in diameter than the main body, and is in contact with the floor 11.
[0022]
A movable rail 16 having a substantially inverted T shape is slidably housed inside the fixed rail main body 3. On both left and right ends of the movable rail 16, upward lips 17 are formed. The movable rail 16 has an upright wall portion 18 at the center, and an upper portion of the upright wall portion 18 projects upward from the opening 6 of the fixed rail body 3. Then, a sheet (not shown) is fixed to the standing wall portion 18. Further, a seat belt usually provided is fixed to a rear end portion (not shown) of the movable rail 16.
[0023]
The movable rail 16 slides back and forth inside the fixed rail body 3 while riding on a roller 14 rolling on the bottom surface 10 of the fixed rail body 3. Although the roller 14 is prevented from dropping from the front end of the fixed rail main body 3, the rivet 12 functions as a stopper for the roller 14 at the head 13 of the rivet 12. A ball 19 is sandwiched between the movable rail 16 and each lip 7, 17 of the fixed rail main body 3, and the left and right positions are regulated by the ball 19.
[0024]
At the front end of the upright wall portion 18 of the movable rail 16, deformation preventing brackets 20 are attached to both left and right surfaces. The deformation preventing bracket 20 is bent in a crank shape when viewed from the front, and has a shape in which the lower end 21 wraps around the side surfaces 8 on both sides of the fixed rail main body 3 in a close state.
[0025]
The lower end 21 is formed to be narrower than the other parts, but the front end is aligned with the other parts. From the aligned front end, a surface-shaped flange 22 orthogonal to the upright wall portion 18 is bent. The flange 22 is formed continuously from the upper end to the lower end of the deformation prevention bracket 20.
[0026]
The lower end portion 21 of the deformation preventing bracket 20 is close to, but not in contact with, the side surface portion 8 of the fixed rail main body 3, and therefore does not hinder the normal movable rail 16 from moving forward and backward. In addition, since the deformation prevention bracket 20, which is a small component, is merely attached, the manufacture of the movable rail 16 is not difficult, and there is no significant increase in weight.
[0027]
When an upward force is applied from the seat belt to the rear end of the movable rail 16 due to sudden braking of the automobile or the like, the front end of the movable rail 16 is pushed down as a reaction, and the fixed rail body 3 is moved downward. Is bent downward around the point pressed by the front end of the movable rail 16, but the lower end 21 of the deformation preventing bracket 20 is located in the proximity of the side surface 8 of the fixed rail 2. Therefore, when the side surface portion 8 abuts on the lower end portion 21, “opening” in which the opening 6 of the fixed rail main body 3 widens largely is prevented.
[0028]
Therefore, the fixed rail main body 3 can return to the original cross-sectional shape after the load from the seat belt is applied. Therefore, permanent deformation does not remain in the fixed rail main body 3, and there is no possibility that a lock mechanism or the like installed at a side adjacent portion of the fixed rail main body 3 is damaged. In particular, in this embodiment, since the flange 22 is formed vertically at the front end of the deformation preventing bracket 20, the rigidity of the deformation preventing bracket 20 itself in the opening direction is improved, and the fixed rail body 3 is prevented from opening. The power has improved further.
[0029]
When the front end of the movable rail 16 is pushed down, a large load is also applied to the front leg 4, but the leg 15 of the rivet 12 attached to the bottom 10 of the front end of the fixed rail main body 3 is Since it is in contact with the floor 11, the load applied to the leg portion 4 can be received by the rivet 12, and buckling of the leg portion 4 can be prevented.
[0030]
【The invention's effect】
According to the present invention, since the deformation preventing bracket attached to the movable rail has a shape in which the deformation preventing bracket wraps around the side portions on both sides of the fixed rail main body in a close state, the deformation preventing bracket allows the fixed rail main body to be mounted. The opening of the mouth can be prevented. Since only the deformation prevention bracket is attached, there is no significant increase in weight, and the thickness of the fixed rail body is not increased, so that the workability of the fixed rail is good.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a slide rail according to an embodiment of the present invention.
FIG. 2 is a plan view showing a front portion of the slide rail of FIG. 1;
FIG. 3 is a side view showing a front portion of the slide rail of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Slide rail 2 Fixed rail 3 Fixed rail main body 4 Leg part 5 Top part 6 Opening 8 Side part 10 Bottom part 11 Floor 12 Rivets 13 Head 14 Roller 16 Movable rail 18 Upright wall part 20 Deformation prevention bracket 21 Lower end part 22 Flange

Claims (3)

A fixed rail main body having an open cross-sectional structure in which a narrow opening along the longitudinal direction is formed on the upper surface portion, and a leg portion facing the floor from a front-back end of the fixed rail main body is referred to as a fixed rail main body. A fixed rail is provided integrally or separately,
Fixing the leg portion of the fixed rail to the floor, holding the fixed rail body at a predetermined height away from the floor,
A movable rail is slidably housed in the fixed rail body, and a seat fixing upright wall portion formed on the movable rail is protruded upward from an opening of the fixed rail main body. hand,
A vehicle seat characterized in that a deformation preventing bracket having a shape in which a lower end part of the movable rail is wrapped in close proximity to both side surfaces of the fixed rail body is attached to both side surfaces near a front end portion of the upright wall portion of the movable rail. Slide rail. It is a slide rail of the vehicle seat of Claim 1, Comprising:
A slide rail for a vehicle seat, wherein a flange having a surface shape orthogonal to a vertical wall portion is formed on an upper and lower part of the deformation prevention bracket. It is a slide rail of the vehicle seat of Claim 1 or Claim 2, Comprising:
The leg portion on the front end portion side of the fixed rail main body is formed integrally by extending at least the bottom portion of the fixed rail main body from the front end to the floor side, and has a head on the bottom surface portion of the front end portion of the fixed rail main body. A slide rail for a vehicle seat, wherein a rivet for a roller stopper mounted in a protruding state is extended downward to abut against a floor.

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