JPH11189077A - Vehicle seat slide device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To downsize a rail structure. A first wall having a base wall attached to one of a vehicle floor and a vehicle seat, a side wall extending from one end of the base wall, and an engagement portion extending from a tip of the side wall. A second rail having a rail 1, a base wall 21 attached to the other of the vehicle floor and the vehicle seat, and an engagement portion 22 formed from one end of the base wall and surrounded by the engagement portion 13 and the side wall 12 of the first rail 1. Rail 2 and the first
A roller 3 rotatably disposed between the base wall 11 of the rail 1 and the base wall 21 of the second rail 2; an engaging portion 13 of the first rail 1 and an engaging portion 22 of the second rail 2; And a locking mechanism 6 disposed between the other end of the base wall 11 of the first rail 1 and the other end of the base wall 21 of the second rail 2. , 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat slide apparatus for a vehicle, which allows the position of a vehicle seat to be adjusted in the longitudinal direction of the vehicle with respect to a vehicle floor.

[0002]

2. Description of the Related Art Conventionally, as this type of seat slide device, one disclosed in Japanese Patent Application Laid-Open No. 5-262172 is known.

An upper rail having a base wall attached to a vehicle seat, a pair of side walls extending downward from both ends of the base wall, and a pair of engaging portions extending from the tip of the side wall, A base wall attached to a vehicle floor, a lower rail extending upward from both ends of the base wall and having a pair of engaging portions surrounded by an upper rail engaging portion and a side wall; and a base wall of the upper rail and a lower rail base wall. The roller includes a roller rotatably disposed therebetween, and a ball rotatably disposed between an engagement portion of the upper rail and an engagement portion of the lower rail. The upper rail accommodates the lower rail in its cross section so as to cover the lower rail, and is slidably supported by the lower rail via balls and rollers.

In this conventional apparatus, brackets having flanges facing each other along the side walls of the upper rail are fixed to the base wall of the upper rail and the base wall of the lower rail, respectively. , The lock plate is rotatably supported, and engagement teeth are formed on the flange portion of the bracket of the lower rail.
In addition, the engagement and disengagement of the lock plate and the engagement teeth restricts and allows the sliding of the upper rail with respect to the lower rail.

[0005]

However, in the above-mentioned conventional device, the lock mechanism including the lock plate and the engagement teeth is disposed outside the rail closed cross section by the upper rail and the lower rail via the bracket, and as a whole, The dimension in the rail width direction increases.

In order to solve this problem, a lock plate is rotatably supported on the side wall of the upper rail, and an engagement tooth is formed on an engagement portion of the lower rail, so that the lock mechanism is arranged in the rail closed section. Then, the engagement and disengagement between the lock plate and the engaging teeth must be performed outside the rolling range of the rollers and balls in the rail longitudinal direction, and the rail length dimension increases accordingly.

Therefore, an object of the present invention is to reduce the size of the rail structure.

[0008]

The technical means taken in the present invention to solve the above technical problem is a base wall attached to one of a vehicle floor and a vehicle seat, and a base wall extending from one end of the base wall. A first rail having a formed side wall and an engaging portion extending from a tip of the side wall, a base wall attached to the other of a vehicle floor and a vehicle seat, and a first rail formed to extend from one end of the base wall. A second rail having an engagement portion surrounded by the engagement portion and the side wall of the rail;
A roller rotatably disposed between the base wall of the first rail and the base wall of the second rail, and the engagement portion of the first rail and the engagement of the second rail. A ball disposed rotatably between the first rail and a lock mechanism disposed between the other end of the base wall of the first rail and the other end of the base wall of the second rail. That is, it was.

According to this technical means, the ball and the roller are arranged at one end of the base wall of the first and second rails, and the lock mechanism is arranged at the other end of the base wall of the first and second rails. . Therefore, the lock mechanisms can be arranged in parallel within the rail closed cross section by the first and second rails and outside the rolling range of the balls and rollers in the rail width direction. Therefore, the dimension in the rail width direction and the dimension in the rail length direction can be reduced.

[0010] More preferably, the base wall of the first rail is formed of a first horizontal wall portion formed by extending the side wall of the first rail from one end and in contact with a roller, and the other of the first horizontal wall portion. A first vertical wall portion formed at an end and substantially parallel to the side wall of the first rail is provided, and the base wall of the second rail is formed such that an engagement portion of the second rail extends from one end. And a second horizontal wall portion with which a roller contacts and the other end of the second horizontal wall portion, the side wall of the first rail and the first horizontal wall portion.
A first side wall parallel to a vertical wall and the first rail;
A second vertical wall portion disposed between the rail and the engaging portion, wherein the lock mechanism is configured to include a lock plate rotatably supported by the first vertical wall portion and the second vertical wall. It is good to comprise a lock plate formed in the wall part and an engaging tooth which can be freely engaged and disengaged.

[0011] More preferably, it has a through hole formed in the engaging portion of the first rail and through which the lock plate is inserted.

[0012] More preferably, the vehicle has a holding portion formed on the second vertical wall portion of the base wall of the second rail for holding the second rail on the vehicle floor.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 3, an upper rail 1 fixed to a vehicle seat (not shown) is formed by bending a single plate, and has an upper surface attached to the vehicle seat. A base wall 11 serving as the surface 1a is provided.
The base wall 11 includes a first horizontal wall 1 having a mounting surface 1a.
3 has a substantially inverted L-shape in cross section with a second vertical wall portion 11b formed to extend downward at the left end of FIG. 3 of the first horizontal wall portion 11a. A side wall 12 extending downward is integrally formed from the right end shown in FIG. From the lower end of the side wall 12, the engaging portion 1
3 are integrally formed to extend. The engaging portion 13 includes a lower wall 13a formed to extend inward from a lower end of the side wall 12 and a flange wall formed to extend upward from an inner end of the lower wall 13a. 13b. The flange wall 13b is connected to the first vertical wall 11
It is arranged in parallel so as to face b at a predetermined interval.

The lower rail 2 held on a vehicle floor (not shown) has a base wall 21 having a side surface serving as a mounting surface 2a to the vehicle floor. The base wall 21 includes a second horizontal wall portion 21a and a second vertical wall portion 21b formed to extend downward at the left end of the second horizontal wall portion 21a shown in FIG. 3 and having a mounting surface 2a. An engagement portion 22 is formed integrally with the base wall 11 so as to extend from the right end of the base wall 11 shown in FIG. The engaging portion 22 is provided on the second horizontal wall 21a.
And a flange wall 22b formed so as to extend obliquely inward from the tip of the side wall 22a to the lower side.

The upper rail 1 is formed by bending a single plate, and accommodates the lower rail 2 in its cross section so as to cover the lower rail 2.
Are arranged so as to be surrounded by the side wall 12 and the engaging portion 13 of the upper rail 1 and can be engaged with the engaging portion 13. Also, the first horizontal wall portion 1 of the base wall 11 of the upper rail 1
1a and the second horizontal wall 21a of the base wall 21 of the lower rail 2 are arranged parallel to each other, and the second vertical wall 21b of the base wall 21 of the lower rail 2 is connected to the first vertical wall of the base wall 11 of the upper rail 1. The upper rail 1 and the lower rail 2 extend out of the rail closed cross section by being disposed between the second vertical wall portion 21b and the flange wall 13b of the engaging portion 13 of the upper rail 1 in parallel with the portion 11b.

The base wall 11 of the upper rail 1 and the lower rail 2
The roller 3 is disposed so as to roll freely so as to be in contact with the first horizontal wall 11a of the base wall 11 and the second horizontal wall 21a of the base wall 21. Also, upper rail 1
The ball 4 is disposed so as to roll freely between the corner between the side wall 12 and the engaging portion 13 and the outer surface of the flange wall 22 b of the engaging portion 22 of the lower rail 2. Furthermore, the second horizontal wall 21a and the second vertical wall 21b of the base wall 21 of the lower rail 2
An upwardly extending flange wall 21 is provided between the corner portions.
c is integrally formed, and a ball 5 is provided between the outer surface of the flange wall portion 21c and a corner portion between the first horizontal wall 11a and the second horizontal wall 11b of the base wall 11 of the upper rail 1.
Are movably arranged.

Thus, the upper rail 1 is slidably supported by the lower rail 2 via the rollers 3 and the balls 4 and 5 in the longitudinal direction of the rail.

On a first vertical wall portion 11b of the base wall 11 of the upper rail 1, a lock plate 6 arranged along the longitudinal direction of the rail is rotatably supported by a pin 61. A flange 62 having an engagement hole 62a is formed at the rear end of the lock plate 6, and an operation handle 63 (shown in FIGS. 1 and 2) is connected to the front end. A plurality of engaging teeth 23 are formed on the second vertical wall portion 21b of the base wall 21 of the lower rail 2 along the rail longitudinal direction. On the vertical wall portion 11b of the base wall 11 of the upper rail 1,
The notch 14 is formed, and the flange 62 of the lock plate 6 is arranged to face the engaging tooth 23 so as to be inserted into the notch 14 so that the engaging hole 62 a is disengaged from the engaging tooth 23. . Further, a through hole 15 is formed in the engaging portion 13 of the upper rail 1, and the tip of the flange 62 of the lock plate 6 is inserted so as to be engageable. As shown in FIG. 2, a stepped pin 16 is provided upright on the first vertical wall portion 11b of the base wall 11 of the upper rail 1 so as to sandwich the rear end of the lock plate 6. The rear end of the lock plate 6 is restricted from moving in the rail width direction by the stepped pin 16 and the projection 64 formed at the rear end of the lock plate 6 comes into contact with the stepped pin 16 so that the lock plate 6 The rotation angle is regulated. As shown in FIG. 1, around the stepped pin 16, there is provided a spring 64 having one end locked to the stepped pin 16 and the other end locked to the lock plate 6. Plate 6
Is the direction in which the engaging hole 62a and the engaging teeth 23 engage (FIG. 1).
(In the counterclockwise direction in FIG. 2). The engagement of the engagement holes 62a of the lock plate 6 supported by the upper rail 1 with the engagement teeth 23 of the lower rail 2 can restrict the sliding of the upper rail 1 with respect to the lower rail 2.

As shown in FIGS. 1 and 2, a holding portion 17 is formed at a rear end of the second vertical wall 21a of the base wall 21 of the lower rail 2 in the rail longitudinal direction. The holding portion 17 has a U-shaped notch 17 into which a striker (not shown) fixed to the vehicle floor can be inserted. The holding portion 17 rotatably supports the pawl 7 by the pin 71 and the latch 8 by the pin 81 so as to face each other across the U-shaped notch 17a. The pawl 7 and the latch 8 are urged by a spring (not shown) and can be engaged with each other. The pawl 7 is engaged with the latch 8 to restrict the rotation of the latch 8. The latch 8 is formed with a U-shaped groove 8a that can match with the U-shaped notch 17a of the holding portion 17, and the U-shaped groove 8a Cross, U-shaped notch 17
The striker that has been inserted through a is received, and an engagement state between the striker and the latch 8 is created. When the pawl 7 is rotated counterclockwise as shown in FIG. 2 against the urging force of the spring to release the engagement with the latch 8, the latch 8 is moved counterclockwise in FIG. 2 by the urging force of the spring. Rotate, thereby creating a disengaged state between the striker and the latch 8.

The second vertical wall 21 of the base wall 21 of the lower rail 2
A hinge plate 9 is rotatably supported by a hinge pin 91 at the end of the rail b in the longitudinal direction of the rail. The hinge plate 9 is fixed to a vehicle floor with bolts or the like.

As described above, the lower rail 2 is attached to the vehicle floor via the latch 8 and the hinge plate 9 which are engaged with the striker. Accordingly, the lower rail 2 is rotatable about the hinge pin 91 with respect to the vehicle floor in a state where the striker and the latch 8 are disengaged. The rotation of the lower rail 1 allows the vehicle seat to obtain a normal use state and a tamped state.

Next, the operation will be described.

When the operating handle 63 is operated to rotate the lock plate 6 clockwise as shown in FIG. 2 against the urging force of the spring 64, the flange 62 of the lock plate 6 In the direction, the engagement between the engagement hole 62a and the engagement tooth 23 is released. Therefore, the upper rail 1 is slidable relative to the lower rail 2 in the rail longitudinal direction, and the position of the vehicle seat with respect to the vehicle floor is adjusted. When the operation of the operation handle 63 is released, the lock plate 6 rotates counterclockwise in FIG. 2 by the urging force of the spring 64, and the engagement teeth 23 and the engagement holes 62a are engaged again. Thereby, the lower rail 2 of the upper rail 1
Is restricted, and the vehicle seat is held at a predetermined position with respect to the vehicle floor.

When the pawl 7 is rotated counterclockwise in FIG. 2 against the urging force of the spring, the engagement between the pawl 7 and the latch 8 is released, and the latch 8 is actuated by the urging force of the spring. It is possible to rotate counterclockwise. In this state, when the rear portion (left side in FIG. 2) of the vehicle seat is lifted upward in FIG. 2, the striker rotates the latch 8 in the counterclockwise direction in FIG. 17 U
As a result, the lower rail 2 rotates counterclockwise as shown in FIG. 2 around the hinge pin 91 of the hinge plate 9 with respect to the vehicle floor 1. As a result, the vehicle seat is in a tamped state with respect to the vehicle floor.
Also, the vehicle seat is rotated in the opposite direction to
Is rotated about the hinge pin 91 of the hinge plate 9 with respect to the vehicle floor 1 in the opposite direction, so that the striker is inserted into the U-shaped notch 17a of the holding portion 17 and the U-shaped groove 8a of the latch 8 As a result, the latch 8 rotates in the opposite direction to the above, against the urging force of the spring, and engages again with the pawl 7 by the urging force of the spring. Thus, the vehicle seat is held in the normal use state with respect to the vehicle floor. The rotation of the pole 8 against the urging force of the spring may be automatically performed by sliding the upper rail 1 against the lower rail, or a separate operation lever may be provided to operate the operation lever. And the operation method may be in any form.

[0025]

According to the present invention, the first rail is slidably supported on one end of the first rail and the second rail with respect to the second rail via balls and rollers, and is locked on the other end. Since the mechanism is arranged, the lock mechanisms can be arranged in parallel within the rail closed cross section by the first and second rails and outside the rolling range of the ball and the roller in the rail width direction. As a result, the rail width dimension and the rail length dimension can be reduced, and the rail structure can be reduced in size.

According to the present invention, the second vertical wall of the base wall of the second rail is disposed between the second vertical wall of the base wall of the first rail and the engaging portion, and the lock plate is fixed to the first vertical wall. And the second vertical wall has engaging teeth formed thereon, so that a through hole through which the lock plate is inserted is formed in the engaging portion of the first rail, so that the lock plate has a simple structure with a two-sided structure. can do. Thereby, the engagement strength between the lock plate and the engagement teeth can be improved. Further, the holding portion can be integrally formed with the second vertical portion, whereby the tample function of the vehicle seat can be easily achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vehicle seat slide device according to the present invention.

FIG. 2 is a front view of the vehicle seat slide device according to the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper rail (1st rail) 2 Lower rail (2nd rail) 3 Roller 4 Ball 6 Lock plate (Lock mechanism) 11 Base wall (Base wall of 1st rail) 12 Side wall (side wall of 1st rail) 13 Engagement part ( 1st rail engaging portion 15 through hole 17 holding portion 21 base wall (second rail base wall) 22 engaging portion (second rail engaging portion) 23 engaging tooth (lock mechanism) 11a first horizontal Wall 11b First vertical wall 21a Second horizontal wall 21b Second vertical wall

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsushi Hisada 2-8-12 Konancho, Hekinan-shi, Aichi Aisin Tatsuei Co., Ltd.

Claims (4)

[Claims] 1. A first rail having a base wall attached to one of a vehicle floor and a vehicle seat, a side wall extending from one end of the base wall, and an engaging portion extending from a tip of the side wall. A base wall attached to the other of the vehicle floor and the vehicle seat, the first wall extending from one end of the base wall;
A second rail having an engagement portion surrounded by the engagement portion and the side wall of the rail; and a second rail rotatably disposed between the base wall of the first rail and the base wall of the second rail. Roller, a ball rotatably disposed between the engagement portion of the first rail and the engagement portion of the second rail, and the other end of the base wall of the first rail. And a lock mechanism disposed between the second rail and the other end of the base wall. 2. The base wall of the first rail is connected to a first horizontal wall portion formed by extending the side wall of the first rail from one end and contacting a roller, and the other end of the first horizontal wall portion. A first vertical wall portion formed and substantially parallel to the side wall of the first rail, wherein the base wall of the second rail is formed such that an engagement portion of the second rail extends from one end and a roller is provided. Contacting the second horizontal wall portion and the other end of the second horizontal wall portion, the side wall of the first rail and the side wall of the first rail being parallel to the first vertical wall portion and the first rail. A second vertical wall portion disposed between the first vertical wall portion and the engaging portion;
The lock mechanism includes a lock plate rotatably supported on the first vertical wall portion and a lock plate formed on the second vertical wall portion, the locking mechanism having engagement teeth detachable from the lock plate. Item 4. The vehicle seat slide device according to Item 1. 3. The vehicle seat slide device according to claim 2, further comprising a through hole formed in the engagement portion of the first rail and through which the lock plate is inserted. 4. The vehicle seat slide device according to claim 2, further comprising a holding portion formed on the second vertical wall portion of the base wall of the second rail to hold the second rail on the vehicle floor.