JPH10100744A - Seat sliding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a fixed rail and a movable rail from being detached from each other by forming one flange of the movable rail or the fixed rail with engaging holes formed, extendedly until its free end comes close to the other face of the movable rail or fixed rail without engaging holes formed. SOLUTION: When load is imposed on a stopper means 5 due to impact load F or the like imposed on a safety belt through a nut 32 fixed to a fixed part 6 of a movable rail 24, the movable rail 24 is lifted. The load is imposed as load on each of second locking parts 8, 8 of a fixed rail 3 through a ball in front, and a second free end part 27b of flanges 27, 28 of the movable rail 24 is imposed as load on each of the second locking parts 8, 8 of the fixed rail 3. Reaction is longitudinally bisected so as to be able to suppress local deformation of the rails 24, 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an automobile, an aircraft,
The present invention relates to a structure of a slide device for a seat of a vehicle such as a ship.

[0002]

2. Description of the Related Art As a conventional seat slide apparatus, there is an example as shown in FIGS. 9 to 12 (see Japanese Utility Model Laid-Open No. 3-53331).

That is, the seat slide device 1 is fixed to the floor of an automobile (not shown) and has a fixed rail 3 having a substantially U-shaped cross section having an opening 2 at the top, and an opening of the fixed rail 3. A movable rail 4 having a substantially T-shaped inverted cross section which can be freely slid along the fixed rail 3 between the two.
And at least stopper means 5 for controlling the sliding between the movable rail 4 and the fixed rail 3.

The movable rail 4 comprises a fixed portion 6 formed of two substantially iron plates fixed to a seat (not shown) and a fixed portion 6 comprising a lower end portion of the fixed portion 6. The two fixed iron plates are bent right and left, open almost bifurcated, extend substantially horizontally, and are formed substantially vertically from their respective free ends to form the fixed rail 3.
And a flange 9, 10 which can be moved by a ball (not shown) interposed between the second locking portion 8 of the fixed rail 3 and a roller (not shown) interposed between the bottom portions 7 of the fixing rail 3.

[0005] The stopper means 5 is provided on the movable rail 4.
Plate 12 fixed to a part of the fixing portion 6 by welding
And the operating rod 14 by the winding portion 13 of the plate 12
Engaging part 15 rotatably supported via
And engagement holes 17 and 18 formed in only one flange 9 of the fixed rail 3 and the movable rail 4 so that a plurality of teeth 16 formed in the engagement portion 15 can be disengaged.
And is composed of

[0006]

However, according to this structure, the upper end 18a of the engaging hole 18 formed only in one flange 9 of the movable rail 4, and the free end 19 of the flange 9 In the case where a large load is applied to the stopper means 5 for some reason, the load applied to the stopper means 5 causes the engagement portion 15 of the stopper means 5 to be small. Tooth 16
Therefore, the flanges 9 and 10, especially the flange 9 of the movable rail 7 may be twisted. Therefore, the thickness is increased or the material is made of a highly rigid material.

[0007] Therefore, the weight may be increased by that amount and may cause a rise in cost.

The present invention has been made in view of the above points, and an object of the present invention is to provide means for preventing a fixed rail and a movable rail from being separated from each other by using a lightweight and inexpensive seat. The purpose of the present invention is to provide as a slide device for use.

[0009]

In order to solve the above-mentioned problems, a first aspect of the present invention provides a fixed rail fixed to a floor member, a seat supported by a seat, and freely slidable along the fixed rail. Possible movable rail, and at least stopper means capable of controlling the sliding between the movable rail and the fixed rail, and at least one of the flanges of the movable rail or the fixed rail has an engagement hole. In the seat slide device, wherein the teeth of the stopper means are configured to be freely meshable and disengageable, one flange of the movable rail or the fixed rail in which the engagement hole is formed,
A free end portion of the movable rail or the fixed rail is formed so as to extend to approach the other surface of the movable rail or the fixed rail where the engagement hole is not formed.

According to the first aspect of the present invention, the bending strength of one flange of the movable rail or the fixed rail is remarkably improved, so that the thickness of the rail itself is increased and a highly rigid material is not selected. Therefore, the weight can be reduced and the cost can be reduced.

Further, the free end of one flange of the movable rail or the fixed rail is close to the other surface of the movable rail or the fixed rail where the engaging hole is not formed, so that the bending strength of the rail is reduced. It will be significantly improved.

Further, even if both rails cause deformation, the free end of one flange collides immediately with the other surface, so that subsequent deformation can be suppressed.

According to a second aspect of the present invention, there is provided the sliding device for a seat according to the first aspect, wherein the extension forming portion of the flange includes:
It is characterized in that it is formed only in a portion where the engagement hole is formed.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the extra thickness of the engagement hole and the free end of the flange increases the breaking strength, and the thickness of the rail itself is reduced. Since it is not necessary to increase the number of materials or select a highly rigid material, the weight can be reduced and the cost can be reduced.

[0015] The invention of claim 3 is claim 1 or claim 2.
The slide device for a seat according to claim 1, wherein the fixed rail has a substantially U-shaped cross section having an opening at an upper portion, and the movable rail is located between the openings of the fixed rail and freely moves along the fixed rail. A slidable inverted substantially T-shaped cross-section and a substantially vertical fixing portion fixed to the seat, extending substantially horizontally from the lower end of the fixing portion, and substantially vertically extending from the free end. The movable rail comprises a flange which can be moved between the fixed rails, and the free end of the flange of the movable rail on which the engagement hole is not formed extends until it approaches the inner surface of the fixed rail. It is characterized by being formed.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect, when a load is applied in a direction in which the fixed portion of the movable rail is lifted for some reason, the flange of the movable rail is moved. Since the free end abuts on the second locking portion of the fixed rail and the front and rear balls can divide the reaction force into two, local rail deformation can be suppressed, and the rear moment strength is improved.

Further, both the flange having the engaging hole and the flange having no engaging hole are formed so as to extend until their free ends are close to the inner surface of the fixed rail. Therefore, if a load is applied in the direction in which the fixed part of the movable rail is lifted for some reason,
The reaction force can be divided into left and right sides, and the deformation balance can be stabilized.

The invention according to claim 4 is the invention according to claims 1 to 3.
The slide device for a seat according to any one of claims 1 to 3, wherein a plurality of the engagement holes are formed in the flange.

According to the fourth aspect of the invention, in addition to the effects of any one of the first to third aspects, the meshing force of the teeth of the engaging portion is increased.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 8 show a seat slide device according to a first embodiment of the present invention. The same members as those in the conventional example are denoted by the same reference numerals.

That is, the seat slide device 21 is mounted on the floor of an automobile (not shown) by the front leg 22 and the rear leg 2.
3, a fixed rail 3 having a front and rear FrRr elongated shape and a substantially U-shaped cross-section having an opening 2 at an upper portion, which is fixed to the fixed rail 3 by a rivet R; A movable rail 24 having a substantially T-shaped inverted cross section which can freely slide back and forth FrRr along a front end position shown in FIG. 1 and a rearmost position shown in FIG. 3, and between the movable rail 24 and the fixed rail 3. And at least stopper means 5 capable of controlling the sliding of

The movable rail 24 comprises a fixed portion 6 made of two iron plates formed substantially vertically and fixed to a seat (not shown), and a fixed portion 6 comprising a lower end of the fixed portion 6. The two iron plates are bent left and right, open almost bifurcated, extend substantially horizontally, and are formed substantially vertically from their respective free ends, thereby forming the bottom portion 7 of the fixed rail 3. It comprises a roller 25 interposed therebetween and flanges 27, 28 movable by a ball 26 interposed between the second locking portions 8, 8 of the fixed rail 3.

The stopper means 5 is provided on the movable rail 2
Plate 1 fixed by welding to a part of the fixing part 6 of 4
2 and the winding portion 13 of the plate 12
Engaging part 15 rotatably supported via 4
And a plurality of engaging holes 1 formed only on one flange 27 of the fixed rail 3 and the movable rail 24 so that the teeth 16 formed on the engaging portion 15 can be disengaged from each other.
7 and 18.

The free ends 27a, 28a of the flanges 27, 28 in the vicinity of and including the positions where the engagement holes 18, 18, 18 are provided are respectively provided on the free ends 27a, 28a.
the second free ends 27b, 28b which rise above the upper end
Are formed, and the free ends 27b, 28b and the engagement holes 18 are formed.
A reinforcement portion 30 having a large dimension H is formed between the upper end portion 18a and the upper end portion 18a.

The fixed rail 3 has a bottom surface 7 and side surface portions 29 formed substantially vertically upright on both side ends of the bottom surface portion 7 and having the engagement holes 17, 17.
29 and the second locking portions 8 and 8.

Reference numeral 31 denotes the roller 25 and the ball 2
6 is a holding bracket rotatably holding the movable member 6 and slidably supported by the movement of the roller 25 and the ball 26 between the movable rail 24 and the fixed rail 3.

The rivet R has a function of a roller stopper for stopping the sliding of the roller 25 so as not to move beyond a predetermined front-rear position.

As is clear from the above, according to the first embodiment of the present invention, the impact load F applied to the safety belt via the nut 32 fixed to the fixed portion 6 of the movable rail 24 is used. When a load is applied to the stopper means 5, the movable rail 24 is lifted.
The load is applied to the second fixed rail 3 via the front ball 26.
The load f1 is applied to each of the locking portions 8, 8, and the second free end portions 27b of the flanges 27, 28 of the movable rail 24,
28b is the load f on the second locking portions 8, 8 of the fixed rail 3.
Since it is added as 2, the reaction force is divided into two, and the local deformation of the rails 24 and 3 can be suppressed.

Further, the movable rail 24 is provided by the reinforcing portion 30.
, The bending strength of the stopper means 5 and the reinforcing portion 30 is improved, and the input balance on the left and right sides of the seat slide device 21 can be stabilized.

Further, the reinforcing portion 30 of the movable rail 24
Is arranged at a position close to the inner wall 3a of the fixed rail 3, so that the teeth 16 of the stopper means 5 are sufficiently engaged, so that the maximum allowance for engagement can be ensured and the removal of the teeth 16 is ensured. Is prevented.

Further, even if the rails 3, 24 are deformed, they immediately collide with the inner wall 3a, so that the subsequent deformation can be suppressed.

[0033]

As is clear from the above, when any load is applied to the stopper means, one of the flanges of the movable rail or the fixed rail having the engaging hole is formed with the engaging hole. The free end of the movable rail or the fixed rail is extended so as to be close to the other surface of the movable rail or the fixed rail, so that the bending strength of the flange is significantly improved, and the thickness of the rail itself is increased. Since it is not necessary to increase the number of materials and to select a highly rigid material, the weight can be reduced and the cost can be reduced.

In addition, since the free end of one flange of the movable rail or the fixed rail is close to the other surface of the movable rail or the fixed rail where the engaging hole is not formed, the bending strength of the rail is reduced. It will be significantly improved.

Further, even if both rails cause deformation, the free end of one flange collides immediately with the other surface, so that subsequent deformation can be suppressed.

Further, since the extension formation portion of the flange is formed only at the portion where the engagement hole is formed, the excess thickness of the engagement hole and the free end of the flange reduces the breaking strength. Since it is not necessary to increase the thickness of the rail itself and to select a highly rigid material, the weight can be reduced and the cost can be reduced.

When a load is applied in a direction in which the fixed portion of the movable rail is lifted for some reason, the free end of the flange of the movable rail comes into contact with the second locking portion of the fixed rail, and the front and rear balls are moved. Can divide the reaction force into two,
Local rail deformation can be suppressed, and the rear moment strength is improved.

Both the flange with the engaging hole and the flange without the engaging hole are formed so that their free ends extend close to the inner surface of the fixed rail. Therefore, if a load is applied in the direction in which the fixed part of the movable rail is lifted for some reason,
The reaction force can be divided into left and right sides, and the deformation balance can be stabilized.

Further, since a plurality of the engaging holes are formed in the flange, the meshing force of the teeth of the engaging portion is increased.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view of a sliding device for a seat according to a first embodiment of the present invention in a state where a movable rail is at a most advanced position with respect to a fixed rail.

FIG. 2 is a partial cross-sectional side view of the seat slide device of FIG. 1 at different positions.

FIG. 3 is a partial cross-sectional side view of the seat slide device of FIG. 1 in a state where a movable rail is at a most advanced position with respect to a fixed rail.

FIG. 4 is a partial cross-sectional side view of the seat slide device of FIG. 3 at different positions.

FIG. 5 is an enlarged side view of a main part of the seat slide device of FIG. 1;

FIG. 6 is a sectional view taken along the line AA of FIG. 5;

FIG. 7 is a perspective view of a main part of the movable rail in FIG. 6 as viewed obliquely from above.

FIG. 8 is a perspective view of the main part of the movable rail of FIG. 6 from obliquely below.

FIG. 9 is a side view corresponding to FIG. 5 of a conventional seat slide device.

FIG. 10 is a sectional view taken along the line BB of FIG. 9;

FIG. 11 is a perspective view of the main part of the movable rail in FIG. 10 as viewed obliquely from above.

FIG. 12 is a perspective view of the main part of the movable rail of FIG. 10 from obliquely below.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 21 Slide device for seats 2 Opening of fixed rail 3 Fixed rail 4, 24 Movable rail 5 Stopper means 6 Fixed part of movable rail 7 Bottom part of fixed rail 8 Second locking part of fixed rail 15 Engagement of stopper means Joint 16 Tooth 17 of stopper means 17, 18 Engagement hole of stopper means 18a Upper end 27, 28 of engagement hole Flange 27a, 28a Free end of each of flanges 27b, 28b Second free end of each of flanges 30 Reinforcement

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Noboru Takamura 1-14-7 Maruyama, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Inside the Oi Works Co., Ltd. (72) Inventor Hidemasa Hirakui 1-1-14 Maruyama, Isogo-ku, Yokohama-shi, Kanagawa No. 7 Inside Oi Works

Claims (4)

[Claims] A fixed rail fixed to a floor member;
At least a movable rail supported by a seat and slidable along the fixed rail, and stopper means capable of controlling sliding between the movable rail and the fixed rail; A seat slide device configured so that the teeth of the stopper means can be disengaged and disengaged from engagement holes of at least one flange of a fixed rail, wherein the movable rail or the movable rail having the engagement holes formed therein. One of the flanges of the fixed rail has a free end extending and extending until approaching the other surface of the movable rail or the fixed rail where the engagement hole is not formed. Slide device. 2. The seat slide device according to claim 1, wherein the extension forming portion of the flange is formed only in a portion where the engaging hole is formed. Slide device. 3. The sliding device for a seat according to claim 1, wherein the fixed rail has a substantially U-shaped cross section having an opening at an upper portion, and the movable rail has a shape similar to that of the fixed rail. A fixing portion formed between the openings and having a substantially inverted T-shaped cross section which can freely slide along the fixing rail and is formed in a substantially vertical shape and fixed to a seat, and substantially horizontal from a lower end portion of the fixing portion. The movable rail comprises a flange which is movable up and down between the fixed rails by being formed substantially vertically from the free end. A sliding device for a seat, wherein a free end portion of the sliding device is extended to approach an inner surface. 4. The sliding device for a seat according to claim 1, wherein a plurality of the engaging holes are formed in the flange.