JPH0948267A - Seat sliding device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items and ensure the strength of a rail by providing a lock plate at an operating handle provided at a vertical wall of a rail for supporting a seat back, inserting an engaging part of a moving member, moved at the rotating time of the seat back, through an oblong hole in the vertical wall, and linking a converting member of the operating handle with the engaging part. SOLUTION: A rotary shaft 7 is disposed on the inside of a vertical wall 21 of an upper rail 2, and its front end is made an operating handle. The vertical wall 21 is provided with a plate 8 with an oblong hole 82 formed, and an oblong through-hole 24 is further formed. A connecting rod 9 is provided on the outside of the vertical wall 21, and its one end 91 is connected to a lever 34, while the other end 92 is inserted through the through-hole 24 and the oblong hole 82. When an upper arm 31 is rotated counterclockwise to bring down a seat back forward, the lever 34 is rotated, and the other end 92 of the connecting rod 9 moves along the through-hole 24. The plate 8 is then moved downward by the inclination of the oblong hole 82, and the rotary shaft 7 is rotated through a link 71. The engagement between a claw part 51a of a lock plate 51 and an engaging hole is thus released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat slide device.

[0002]

2. Description of the Related Art Conventionally, as vehicle seat slide devices of this type, Japanese Utility Model Publication No. 57-28671 and Japanese Utility Model Publication No.
The one disclosed in Japanese Laid-Open Patent Publication No. 16034 is known.

The former conventional device includes an operation handle rotatably arranged on a side wall of a rail, and a moving member arranged on an upper wall of the rail and moved by rotation of a seat back.
A conversion member that is arranged on the upper wall of the rail and that is connected to the operation handle and the moving member and that converts the moving operation of the moving member into a rotating operation of the operating handle to rotate the operating handle by the movement of the moving member; And a lock plate which is held and regulates or cancels the sliding movement of the rail by the rotation of the operation handle.

In the latter conventional device, an operation handle rotatably arranged inside a vertical wall of a rail on which a seat back is rotatably supported, and a rail slid by rotation of the operation handle held by the operation handle. And a lock plate that restricts or releases the operation.

[0005]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention An attempt is made to dispose the moving member and converting member of the former conventional device described above against the vertical wall of the rail on which the operation handle of the latter conventional device is rotatably arranged inside. Then, usually, the seat back is rotatably supported on the inner side of the vertical wall, so that the seat back is arranged on the outer side of the vertical wall. Therefore, in order to link the moving member to the operation handle via the conversion member, it is necessary to add a transmission member from the outer side to the inner side of the vertical wall such as a cable, which increases the number of parts.

Therefore, it is a technical object of the present invention to allow a moving member arranged on a vertical wall to be linked to an operation handle via a conversion member without increasing the number of parts. Is.

[0007]

The technical means taken in the present invention to solve the above technical problems is rotatably arranged inside a vertical wall of a rail on which a seat back is rotatably supported. An operation handle, a lock plate held by the operation handle for restricting or canceling the sliding motion of the rail by rotation of the operation handle, and a direction substantially orthogonal to the sliding direction of the rail formed on the vertical wall. An elongated hole that penetrates in the direction of the rail and extends in the sliding direction of the rail,
A moving member that is provided outside the vertical wall and that is inserted into the elongated hole, and that moves by a rotation of the seat back, and a moving member that is arranged inside the vertical wall and is connected to the operation handle. And a conversion member that is linked to the engaging portion of the moving member and that converts the moving operation of the moving member into a rotating operation of the operation handle and rotates the operating handle by the movement of the moving member. Is.

According to this technical means, the operating handle and the moving member are directly linked by the converting member through the through hole. With this, a transmission member such as a cable is not required, and thus the moving member arranged on the vertical wall can be linked to the operation handle via the conversion member without increasing the number of parts.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an upper rail 2 is slidably supported in a rail longitudinal direction on a lower rail 1 fixed to a vehicle floor (not shown). A seat cushion (not shown), which is a component of the vehicle seat, is supported on the upper rail 2, and
A seat back (not shown), which is a component of the vehicle seat, is supported via a reclining mechanism 3 so as to be rotatable with respect to a seat cushion.

As shown in FIG. 2, the lower rail 1 is
It is made of a single plate material and has a substantially U-shaped cross-section with both side walls 11 and a bottom wall 12, and at the tips of both side walls 11, flange walls 13 extending inwardly in a hook shape are respectively formed. Has been formed. The upper rail 2 is made of two plate materials,
The vertical wall 21 and the horizontal wall 22 have a substantially T-shaped cross section, and flange walls 23 extending upward are formed at both ends of the horizontal wall 22. In the upper rail 2 configured in this manner, the vertical wall 21 is positioned so that the lateral wall 22 faces the bottom wall 12 and the flange wall 23 faces the flange wall 13 and is positioned within the cross-sectional shape of the lower rail 1.
It is supported by the lower rail 1 by passing between the three.
Further, the roller 4 is provided between the bottom wall 12 and the lateral wall 22 which face each other.
Balls 42 are provided between the flange wall 13 and the flange wall 23 facing each other, respectively, thereby ensuring the sliding movement of the upper rail 1 with respect to the lower rail 2.

As shown in FIG. 1, the reclining mechanism 3 includes an upper arm 31 fixed to a seat back and a lower arm 32 fixed to a vertical wall 21 of the upper rail 1.
The upper arm 31 is rotatably supported with respect to the lower arm 1. The shaft 33, which is the center of rotation of the upper arm 31 with respect to the lower arm 1, is provided with a lever 34 that engages with the upper arm 31 when the upper arm 31 rotates a predetermined amount counterclockwise as shown in FIG. It is supported.

As shown in FIGS. 1 and 2, a lock mechanism 5 is provided between the upper rail 1 and the lower rail 2, respectively.
Are arranged. The lock mechanism 5 mainly includes a lock plate 51 and an engagement hole 52.

The lock plate 51 of the lock mechanism 5 is made of a single plate material and has a pair of claw portions 51a and a fixed portion 51b. The claw portions 51a are formed at both ends of the plate material by cutting and raising a central portion of the edge portion of the plate material.
Is formed by bending the other edge of the plate material in an arc shape. The lock plate 51 thus configured is disposed inside the lower rail 1 and the upper rail 2, and is rotatably supported by the winding portion 61 on the bracket 6 fixed to the vertical wall 21 of the upper rail 2. Axis 7
By winding the fixing portion 51b around the fixing portion 51b, the fixing portion 51b is fixed so as to rotate integrally with the rotating shaft 7.

As shown in FIG. 2, there are a plurality of locking holes 52 of the lock mechanism 5 in the longitudinal direction of the rail, each of which is formed on the inner side wall 12 of both lower rails 1.

In the structure of the lock mechanism 5 described above, the claw portion 51a of the lock plate 51 is adapted to be engaged and disengaged by the rotation of the locking hole 52 and the rotary shaft 7, and the claw portion 51a of the lock plate 51. The sliding motion of the upper rail 2 with respect to the lower rail 1 is restricted by the engagement of the locking hole 52 with the locking hole 52, and the claw portion 51a of the lock plate 51 and the locking hole 52 are locked.
When the engagement with is released, the sliding motion of the upper rail 2 with respect to the lower rail 1 is allowed. The lock plates 51 of both the lock mechanisms 5 are constantly rotated by a spring (not shown) arranged between the upper rail 2 and the rotary shaft 7 in a direction in which the claw portion 51 a engages with the locking hole 52. It is energized. Also, on the other side wall 12 of the lower rail 1,
A hole 14 similar to the locking hole 52 of the lock mechanism 5 is formed in order to improve the molding of the lower rail 1.

As shown in FIGS. 1 to 4, the rotary shaft 7 is disposed inside the vertical wall 21 of the upper rail 2 and extends in the rail longitudinal direction substantially parallel to the vertical wall 21 of the upper rail 2. The front end of the rotary shaft 7 in the rail longitudinal direction is arranged on the front side of the seat cushion and functions as an operation handle. A link 71 is fixed to the rear end of the rotary shaft 7 in the rail longitudinal direction so as to rotate integrally. Inside the vertical wall 21 of the upper rail 2, a plate 8 is arranged substantially parallel to the vertical wall 21.
An arm portion 81 facing the tip of the link 71 is formed on the plate 8, and the plate 8 and the link 71 are connected by a pin 72 at the arm portion 81. Further, the plate 8 is formed with an elongated hole 82 extending in the rail longitudinal direction and inclined in the vertical direction (vertical direction in FIG. 4) orthogonal to the rail longitudinal direction. Vertical wall 2 of upper rail 2
1 is a through hole 2 having an elongated hole shape extending in the rail longitudinal direction.
4 are formed. On the outer side of the vertical wall 21 of the upper rail 2, a connecting rod 9 is arranged substantially parallel to the vertical wall 21,
One end 91 is connected to the lever 34, and the other end 9 is
2 is inserted into the through hole 24 and the elongated hole 82. still,
The opening range of the through hole 24 and the elongated hole 82 in the rail longitudinal direction is a range that allows the movement of the connecting rod 8,
Vertical direction perpendicular to the rail longitudinal direction (vertical direction in Fig. 4)
The opening range in is the same as the width of the connecting rod 8.

Next, the operation will be described.

Normally, the sliding action of the upper rail 2 with respect to the lower rail 1 is restricted by the engagement of the claw portion 51a of the lock plate 51 of the lock mechanism 5 and the engagement hole 52 of the lock mechanism 5 by the urging force of the spring 8. The vehicle seat is held at a predetermined position with respect to the vehicle floor.
When the rotary shaft 7 is rotated in this state, the lock plate 51 rotates together with the rotary shaft 7 against the biasing force of the spring. As a result, the engagement between the claw portion 51a of the lock plate 51 and the engagement hole 52 is released, and the sliding operation of the upper rail 2 with respect to the lower rail 1 is allowed. In this state, the vehicle seat is adjusted to the desired position and the rotary shaft 7
When the rotating operation is released, the lock plate 51 rotates in the opposite direction to the above by the urging force of the spring 8 together with the rotating shaft 7. Thereby, the claw portion 51 of the lock plate 51
The a and the engagement hole 52 are engaged again, and the sliding operation of the upper rail 2 with respect to the lower rail 1 is restricted again. As a result, the vehicle seat is held in the desired adjusted position with respect to the vehicle floor. During these operations, the plate 8 moves up and down via the link 71 with the rotation of the rotary shaft 7, so that the other end 92 of the connecting rod 9 has the plate 8 moved.
Is moved along the through hole 24, and the lever 34 is rotated in the idling state.

When the reclining mechanism 3 is operated to rotate the upper arm 31 counterclockwise with respect to the lower arm 32 in the counterclockwise direction shown in FIG. 1, the seat back is brought forward with respect to the seat cushion by the urging force of a spring (not shown). The upper arm 31 is engaged with the lever 34 so that the lever 3
4 is rotated counterclockwise as shown in FIG. By this rotation of the lever 34, the connecting rod 9 is pulled rightward in FIG. 1, and the other end 92 of the connecting rod 9 moves along the through hole 24. This connecting rod 9
The plate 8 is moved downward in FIG. 1 due to the inclination of the elongated hole 82 by the movement of the other end 92 of the plate 8. The movement of the plate 8 causes the rotating shaft 7 to rotate via the link 71 against the biasing force of the spring. As a result, as described above, the engagement between the claw portion 51a of the lock plate 51 of the lock mechanism 5 and the engagement hole 52 of the lock mechanism 5 is released. As a result, the sliding movement of the upper rail 2 with respect to the lower rail 1 is allowed, and the vehicle seat performs a so-called walk-in operation in which the vehicle seat moves forward by the urging force of a spring (not shown). In this state, the engagement of the upper arm 31 and the lever 33 restricts the rotation of the rotary shaft 7 due to the urging force of the spring, and the disengaged state between the claw portion 51a of the lock plate 51 and the engagement hole 52 is maintained. ing.

In this state, when the seat back is raised contrary to the above, the upper arm 31 is rotated clockwise with respect to the lower arm 32 as shown in FIG.
And the lever 34 are disengaged. As a result, the rotating shaft 7 is rotated in the opposite manner to the above by receiving the biasing force of the spring, and the claw portion 51a of the lock plate 51 and the engaging hole 5 are engaged again. At this time, since the plate 8 is moved in the upward direction in FIG. 1 via the link 71 by the rotation of the rotary shaft 7, the other end 92 of the connecting rod 9 is moved through the through hole 24 by the movement of the plate 8. Along with that, the lever 34 is moved in the opposite direction to the above, and as a result, the lever 34 is rotated via the connecting rod 9 in the same manner as the upper arm 31.

In this embodiment, the lower rail 1,
The upper rail 2, the reclining mechanism 3 and the lock mechanism 5 are explained only on one side of the vehicle seat, but they are a pair arranged on the other side as well, and the rotation operation of the lock plate 5 is The wire 10 is adapted to interlock with one side and the other side. Further, in this case, only the rotating shaft 7 on one side functions as an operation handle, and the link 71, the through hole 24, the plate 8, the connecting rod 9 and the lever 34 are arranged on only one side.

[0022]

According to the present invention, it is possible to achieve the above-mentioned technical problems, and thereby reduce the number of parts. According to the present invention, in addition to this,
The opening range of the slotted hole can be made as small as possible, whereby the strength of the rail can be secured.

[Brief description of drawings]

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

FIG. 2 is a longitudinal sectional view of FIG.

FIG. 3 is a plan view of a main part of the vehicle seat slide device according to the invention, viewed from the inside.

4 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 2 Upper rail (rail) 7 Rotating shaft (operation handle) 8 Plate (converting member) 9 Connecting rod (moving member) 21 Vertical wall 24 Through hole (oblong hole) 51 Lock plate 92 Other end (engaging part)

Claims (1)

[Claims] 1. An operation handle rotatably disposed inside a vertical wall of a rail on which a seat back is rotatably supported, and a sliding operation of the rail held by the operation handle and rotating the operation handle. A lock plate that restricts or releases the restriction, a long hole that penetrates in a direction substantially orthogonal to the sliding direction of the rail formed on the vertical wall, and extends in the sliding direction of the rail; A moving member that is provided on the outside and that is inserted through the elongated hole and that moves by the rotation of the seat back; and a moving member that is arranged inside the vertical wall and that is connected to the operation handle and moves. For a vehicle having a conversion member that is linked to an engaging portion of a member and that converts the moving operation of the moving member into a rotating operation of the operation handle to rotate the operating handle by the movement of the moving member. Seat slide device.