JP3430722B2 - Vehicle seat slide device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat slide device. 2. Description of the Related Art Conventionally, as a vehicle seat slide device of this kind, Japanese Utility Model Publication No. 57-28671 and Japanese Utility Model Application Laid-Open No.
What is shown in -16034 gazette is known. The former conventional device comprises an operation handle rotatably disposed on a side wall of a rail, a moving member disposed on an upper wall of the rail and moving by rotating a seat back,
A conversion member disposed on the upper wall of the rail and connected to the operation handle and the moving member, for converting a movement operation of the movement member into a rotation operation of the operation handle, and rotating the operation handle by moving the movement member; And a lock plate that is held and restricts or releases the sliding operation of the rail by rotation of the operation handle. In the latter conventional device, an operating handle rotatably disposed inside a vertical wall of a rail on which a seat back is rotatably supported, and a rail which is held by the operating handle and slides by rotation of the operating handle. And a lock plate for restricting or releasing the operation. [0005] The moving member and the conversion member of the former conventional device are attached to the vertical wall of the rail on which the operation handle of the latter conventional device is rotatably disposed inside. In order to arrange the seat back, usually, the seat back is rotatably supported inside the vertical wall, so that the seat back is arranged outside the vertical wall. Therefore, in order to link the moving member to the operation handle via the conversion member, a transmission member from the outside to the inside of the vertical wall such as a cable must be added, and the number of parts increases. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to make it possible to link a moving member disposed on a vertical wall to an operation handle via a conversion member without increasing the number of parts. It is. [0007] The technical means taken in the present invention to solve the above technical problem is that the seat back is rotatable inside the vertical wall of the rail on which the seat back is rotatably supported. An operating handle, a lock plate that is held by the operating handle and that regulates or releases the sliding operation of the rail by rotation of the operating handle, and a sliding direction of the rail that is formed on the vertical wall. An elongate hole that penetrates in a direction substantially perpendicular to 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 rotating the seat back; and a moving member that is disposed inside the vertical wall and is connected to the operation handle. And a conversion member that is linked to an engaging portion of the moving member, converts a moving operation of the moving member into a rotating operation of the operation handle, and rotates the operation handle by moving the moving member. It is. According to this technical means, the operating handle and the moving member are directly linked by the converting member via the through hole. This eliminates the need for a transmission member such as a cable, so that the moving member disposed on the vertical wall can be linked to the operation handle via the conversion member without increasing the number of components. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an upper rail 2 is slidably supported in a longitudinal direction of a lower rail 1 fixed to a vehicle floor (not shown). The upper rail 2 supports a seat cushion (not shown) that is a component of the vehicle seat.
A seat back (not shown), which is a component of the vehicle seat, is supported via the reclining mechanism 3 so as to be rotatable with respect to the seat cushion. As shown in FIG. 2, the lower rail 1 is
It is made of a single plate and has a substantially U-shaped cross-section having both side walls 11 and a bottom wall 12. At both ends of the side walls 11, flange walls 13 extending inward like hooks are respectively provided. Is formed. The upper rail 2 is made of two plate materials,
It has a substantially inverted T-shaped cross section including a vertical wall 21 and a horizontal wall 22, and flange walls 23 extending upward are formed at both ends of the horizontal wall 22. The upper rail 2 configured as described above has the vertical wall 21 that is positioned within the cross-sectional shape of the lower rail 1 such that the horizontal wall 22 faces the bottom wall 12 and the flange wall 23 faces the flange wall 13.
3 and is supported by the lower rail 1.
A roller 4 is provided between the bottom wall 12 and the side wall 22 facing each other.
The ball 1 is disposed between the flange wall 13 and the flange wall 23 facing each other, whereby the sliding operation of the upper rail 1 with respect to the lower rail 2 is ensured. As shown in FIG. 1, the reclining mechanism 3 includes an upper arm 31 fixed to the seat back and a lower arm 32 fixed to the vertical wall 21 of the upper rail 1.
The upper arm 31 is rotatably supported with respect to the lower arm 1. A lever 34 that engages with the upper arm 31 when the upper arm 31 rotates a predetermined amount in the counterclockwise direction shown in FIG. Supported. As shown in FIGS. 1 and 2, a lock mechanism 5 is provided between the upper rail 1 and the lower rail 2.
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 fixing portion 51b. The claw portions 51a are formed at both ends by cutting and raising the center portion of one edge of the plate material.
Is formed by bending the other edge of the plate material into an arc shape. The thus configured lock plate 51 is disposed inside the lower rail 1 and the upper rail 2, and is rotatably supported by the winding part 61 of the bracket 6 fixed to the vertical wall 21 of the upper rail 2. Axis 7
Is fixed so as to rotate integrally with the rotary shaft 7. As shown in FIG. 2, a plurality of locking holes 52 of the lock mechanism 5 are provided in the longitudinal direction of the rail, and are respectively formed in the inner side walls 12 of both lower rails 1. In the configuration of the lock mechanism 5 described above, the claw 51a of the lock plate 51 is adapted to be disengaged by the rotation of the locking hole 52 and the rotating shaft 7, and the claw 51a of the lock plate 51 is provided. The sliding operation of the upper rail 2 with respect to the lower rail 1 is restricted by the engagement between the locking rail 52 and the locking hole 52.
Is released, the sliding operation of the upper rail 2 with respect to the lower rail 1 is allowed. The lock plates 51 of the lock mechanisms 5 are always rotated by a spring (not shown) disposed between the upper rail 2 and the rotating shaft 7 in a direction in which the claw portions 51a engage with the locking holes 52. It is being rushed. 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 to improve the molding of the lower rail 1. As shown in FIGS. 1 to 4, the rotating 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 rotating shaft 7 in the rail longitudinal direction is disposed 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 rotating shaft 7 in the rail longitudinal direction so as to rotate integrally. Inside the vertical wall 21 of the upper rail 2, the plate 8 is arranged substantially parallel to the vertical wall 21.
The plate 8 is formed with an arm 81 facing the tip of the link 71, and the plate 8 and the link 71 are connected to each other by a pin 72 with the arm 81. The plate 8 has a long hole 82 extending in the rail longitudinal direction and inclined in a vertical direction (vertical direction shown in FIG. 4) perpendicular to the rail longitudinal direction. Vertical wall 2 of upper rail 2
1 is a long hole-shaped through hole 2 extending in the longitudinal direction of the rail.
4 are formed. Outside the vertical wall 21 of the upper rail 2, a connecting rod 9 is disposed substantially parallel to the vertical wall 21.
One end 91 is connected to the lever 34 and the other end 9
2 is inserted through 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 in which the movement of the connecting rod 8 is allowed,
Vertical direction perpendicular to the rail longitudinal direction (vertical direction shown in FIG. 4)
Is the same range as the width of the connecting rod 8. Next, the operation will be described. Normally, the sliding operation of the upper rail 2 with respect to the lower rail 1 is restricted by the engagement of the claw 51a of the lock plate 51 of the lock mechanism 5 with 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.
In this state, when the rotating shaft 7 is rotated, the lock plate 51 rotates together with the rotating shaft 7 against the urging force of the spring. Thereby, 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 a desired position,
Is released, the lock plate 51 rotates together with the rotating shaft 7 in the opposite direction to that described above by the urging force of the spring 8. Thereby, the claw portion 51 of the lock plate 51
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 regulated again. As a result, the vehicle seat is held at a desired position adjusted 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 rotating shaft 7, so that the other end 92 of the connecting rod 9 is connected to the plate 8.
Is moved along the through hole 24, and the lever 34 rotates in the idle running state. When the reclining mechanism 3 is operated to rotate the upper arm 31 counterclockwise in FIG. 1 with respect to the lower arm 32, and the urging force of a spring (not shown) brings the seat back forward with respect to the seat cushion. The upper arm 31 is engaged with the lever 34 and the lever 3
4 is rotated counterclockwise as shown in FIG. By the 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 as shown in FIG. Due to the movement of the plate 8, the rotating shaft 7 is rotated via the link 71 against the urging force of the spring. Thereby, 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, a sliding operation of the upper rail 2 with respect to the lower rail 1 is allowed, and 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 rotation of the rotating shaft 7 by the urging force of the spring is restricted by the engagement of the upper arm 31 and the lever 33, and the disengagement 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 reversed, the upper arm 31 is rotated clockwise with respect to the lower arm 32 in FIG.
And the lever 34 is disengaged. As a result, the rotating shaft 7 is rotated in the opposite direction to the above by receiving the urging force of the spring, and the claw 51a of the lock plate 51 and the engagement hole 5 are engaged again. At this time, the rotation of the rotating shaft 7 causes the plate 8 to move in the upward direction shown in FIG. 1 via the link 71, and the other end 92 of the connecting rod 9 moves the through hole 24 Is moved in the opposite direction to that described above, and as a result, the lever 34 rotates similarly to the upper arm 31 via the connecting rod 9. In this embodiment, the lower rails 1,
Although the upper rail 2, the reclining mechanism 3 and the lock mechanism 5 are described only on one side of the vehicle seat, they are also arranged on the other side, and the rotation of the lock plate 5 , The wire 10 is interlocked between one side and the other side. Further, in this case, only one of the rotating shafts 7 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 provided only on one side. According to the present invention, the above-mentioned technical problems can be achieved, and the number of parts can be reduced. According to the present invention, in addition to this,
The opening range of the elongated hole can be made as small as possible, whereby the strength of the rail can be secured.

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 longitudinal sectional view of FIG. FIG. 3 is a plan view showing the main part of the vehicle seat slide device according to the present invention, as viewed from the inside. FIG. 4 is a sectional view taken along line AA of FIG. 3; [Description of Signs] 2 Upper rail (rail) 7 Rotating shaft (operation handle) 8 Plate (conversion member) 9 Connecting rod (moving member) 21 Vertical wall 24 Through hole (long hole) 51 Lock plate 92 Other end (engagement portion) )

Continuation of the front page (56) References JP-A-62-17441 (JP, U) JP-A-63-104237 (JP, U) US Patent 5100092 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60N 2/00-2/54

Claims (1)

(1) An operation handle rotatably disposed inside a vertical wall of a rail on which a seat back is rotatably supported, and the operation handle held by the operation handle. A lock plate that regulates or releases the sliding operation of the rail by rotation of the rail, and penetrates in a direction substantially perpendicular to the sliding direction of the rail formed on the vertical wall and extends in the sliding direction of the rail. A moving member having an engaging portion disposed outside the vertical wall and being inserted into the long hole and moving by the rotation of the seat back; and a moving member disposed inside the vertical wall. It is connected to the operating handle and is linked to the engaging portion of the moving member. The moving operation of the moving member is converted into the rotating operation of the operating handle, and the operating handle is rotated by the movement of the moving member. Seat slide device having a member.