JPH09272366A - Seat sliding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts by transmitting a walk-in mechanism to a second lock lever via a drive cable for a first lock lever. SOLUTION: Movement of an outer side control lever 102 for driving an outer side lock mechanism is connected to an open lever 85 of an inner side lock mechanism via a cable 100 so that a control lever 102, a connecting rod 88, a guide plate 96, and a lock plate 91 provided in an outer side seat slide become unnecessary for inner side seat sliding. Namely, a transmission mechanism of the operation force to a second lock lever 41 in operating a walk-in mechanism and a mechanism for engaging a second lock lever with a second lower rail at a prescribed position become unnecessary so as to reduce the number of parts. Assembling is also facilitated compared with a case of using transmission means such as a link, etc., despite of a narrow space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat slide device having a walk-in mechanism, and more specifically, to first and second lower rails arranged in parallel on a floor, and the first lower rail.
And a second lower rail slidably engaged with each other, and a seat track formed of first and second upper rails on which a seat is provided, and a plurality of covers formed along the longitudinal direction of the first and second lower rails. The engaging portion, which is arranged along the longitudinal direction of the first and second upper rails, is provided rotatably in the vertical direction on the first and second upper rails, and the end portion of the lower rail is engaged with the engaged portion. First and second lock levers provided with an engaging portion engageable with the joint portion, the first locking lever
And a lock mechanism composed of first and second urging means for urging the second lock lever in the direction of engaging with the first and second lower rails, and when the walk-in operation is performed,
The engagement of the first and second lock levers with the first and second lower rails is released to move the first and second upper rails forward, and then the first and second upper rails are released. A seat having a walk-in mechanism which, when moved rearward, reengages the first and second lock levers with the first and second lower rails at predetermined positions of the first and second lower rails. Regarding slides.

[0002]

2. Description of the Related Art In recent years, in sheet slide devices,
The structure shown in FIGS. 4 to 9 is used in which the space occupied by the lock mechanism and the walk-in mechanism is reduced.

In the figure, FIG. 4 is an exploded perspective view of an essential part of a conventional sheet slide device, FIG. 5 is a sectional view taken along line AA in FIG. 4, and FIG. 6 is a sectional view taken along line BB in FIG. 7 is a side view of FIG. 4, FIG. 8 is an enlarged view of a main part of FIG. 7, and FIG. 9 is a view for explaining the operation of FIG.
FIG. 10 is a view in the direction of the arrow D in FIG. 4 excluding the walk-in mechanism after assembly.

[0004] The seat slide device of the prior art is provided on the outer side and the inner side of the lower surface of the passenger seat. However, since the configuration is the same, the description will be made using the outer side seat slide device. The description of the seat slide device on the inner side is omitted.

First, the cross-sectional shapes of the upper rail and the lower rail, which are components of the seat track, will be described with reference to FIGS. 5 and 6. Lower rail 11 fixed to floor side
Is a base portion 12 provided substantially parallel to the floor, a first side wall portion 13 that is bent from one end portion of the base portion 12 and extends in a direction away from the floor, and the other of the base portion 12 is The second sidewall portion 14 that is bent from the end portion, extends in the direction away from the floor, and has substantially the same length as the first sidewall portion 13, and the upper end portion of the first sidewall portion 13 from the base portion. The first top portion 15 that is bent substantially parallel to 12 and extends toward the second side wall portion 14
And from the upper end portion of the second side wall portion 14 to be bent substantially parallel to the base portion 12 and extending toward the first side wall portion 13,
The second top 16 and the first top 1 that are approximately the same length as the top
The first hanging part 17 which is bent from the other end of the first end part 5 in the direction 12 toward the base part 12 and has a shorter length than the first side wall part 13 and the other end part of the second top part 16 from the base part 12 Bend in the direction 1st
The first hanging part 1 faces the hanging part 17 of the
7 and a second hanging part 18 having substantially the same length.

[0006] One of the first hanging portion 17 and the second hanging portion 18, in the present embodiment, is engaged with the first hanging portion 17 along the longitudinal direction of the lower rail 11. A plurality of lock projections 19 are formed.

The upper rail 21 on which the seat cushion of the seat is provided is composed of a first upper rail 22 and a second upper rail 23. The first upper rail 22 includes a first base 24 inserted into the lower rail 11 through a space S formed between the first hanging part 17 and the second hanging part 18 of the lower rail 11, and a first base. 24, a first side wall portion 13 of the lower rail 11, a first top portion 15, and a first extension portion 25 extending to a space S1 formed by the first hanging portion 17. .

On the other hand, the second upper rail 23 has a second base 26 inserted into the lower rail 11 through a space S formed between the first hanging part 15 and the second hanging part 18 of the lower rail 11. And a second extending portion extending from the second base portion 26 and extending to the space S2 formed by the second side wall portion 14, the second top portion 16, and the second hanging portion 18 of the lower rail 11. 27.

Further, the first base of the first upper rail 22 and the second base 26 of the second upper rail 23 are fixed and integrated. Then, the lower rail base 12, the first side wall 13, and the upper rail 21
Of the lower rail, the steel ball 31 disposed between the base portion 12, the second side wall portion 14, and the second extension portion 27 of the upper rail 21. Reference numeral 21 is slidable with respect to the lower rail 11.

In the upper rail 21, a space is provided between the lower portion of the first base 24 of the first upper rail 22 and the lower portion of the second base 26 of the second upper rail 23 along the longitudinal direction of the upper rail 21. S3 is formed.

At the rear of the upper rail 21, between the first base 24 of the first upper rail 22 and the second base 26 of the second upper rail 23, the aforementioned space is provided.
Extend in the direction (vertical direction) perpendicular to the extension direction of S3, and
A space S3 'connected to S3 is formed. The upper rail 21 is urged forward by a spring (not shown) as third urging means.

Next, the lock mechanism of the seat slide device will be described with reference to FIGS. 4 to 8. Reference numeral 41 denotes a lock lever provided in a space S3 formed between the first upper rail 22 and the second upper rail 23 of the upper rail 21. A hole 42 is formed in the middle of the lock lever 41.
Are formed.

The lock lever 4 is engaged with a hole 43 formed in the upper rail 21 and a hole 42 of the lock lever 41 and using a pin 44 positioned parallel to the floor.
1 is provided rotatably in the up-down direction.

One rotation end of the lock lever 41
A bent portion 45 bent toward the protrusion 10 of the lower rail 11 is provided at the lower portion of the (rear end portion), and a first upper rail 22 and a second upper rail 23 of the upper rail 21 are provided at the upper portion of one rotating end portion. A fitting portion 46 that fits into the space S3 'formed between the two is formed.

A lock hole 47 is formed in the bent portion 45 as an engagement member capable of engaging with the lock projection 19 of the lower rail 11. In the case of this conventional example, the portions of the first base portion 24 and the first extension portion 25 of the first upper rail 22 that interfere with the movement range of the bent portion 45 of the lock lever 41 are as shown in FIG. Is cut into.

On the other hand, the second upper rail 23 of the upper rail 21 is provided with an arc-shaped hole 51 centered on the hole 43. Further, the fitting portion 46 of the lock lever 41 is formed with a locking portion 52 that projects to the outside through the hole 51. 53 has one end locked to the second upper rail 23, the other end locked to the locking portion 52 of the lock lever 41, and the lock hole 47 of the lock lever 41 engaged with the lock projection 19 of the lower rail 11. This is a spring as a first urging means for urging in a direction in which the spring moves.

The other end (front end) of the lock lever 41
Is bent in the direction of the other sheet track, and a notch groove 63 is formed at the end. A hole 64 is formed in a front portion of the upper rail 21, and one end of the handlebar 70 is rotatably engaged with the hole 64. The other end of the handlebar 70 is rotatably engaged with a hole in the upper rail 21 of the other seat track.

The handlebar 70 has a lock lever 4
A crank portion 71 with which one notch groove 63 is engaged, and an operation portion 72 extending along the front edge of the seat are formed. A reclining mechanism 80 is provided at the rear portion of the upper rail 21 and enables the seat back (not shown) of the seat to tilt in the front-rear direction.

The reclining mechanism 80 includes a fixed plate 80a fixed to the upper rail 21 side, a hinge pin 81 fixed to the fixed plate 80a, and a hinge 8
1 and a rotating plate 80b rotatably provided on the frame of the seat back.

A spring 82 whose inner end is engaged with the hinge pin 81, whose intermediate part is wound around the hinge pin 81, and whose outer end is engaged with the projection 80c of the rotating plate 80b.
Thereby, the seat back of the seat is urged in the forward leaning direction.

Reference numeral 83 denotes a control lever rotatably provided on the hinge pin 81. When the seat back leans forward, the protrusion 80c of the rotating plate 80b of the reclining mechanism 80 pushes one rotating end of the control lever 83 so that the control lever 83 rotates together with the seat back in the forward leaning direction. Has become.

Reference numeral 85 denotes an open lever rotatably attached to the second upper rail 23 of the upper rail 21 using a pin 86. An abutting portion 87 that can come into contact with the locking portion 52 of the lock lever 41 is formed at one rotating end of the open lever 85, and one end of the other opening of the control lever 83 is formed at the other rotating end. The other end of the connecting rod 88 locked to the rotating end is locked.

Further, the open lever 85 is locked at the other end of a spring 89 as one of the third biasing means whose one end is locked at the upper rail 21.
Of the lock lever 41 is urged away from the locking portion 52 of the lock lever 41.

First upper rail 2 of upper rail 21
2 is provided with a lock plate 91. The lock plate 91 includes a leaf spring 92 and the leaf spring 92.
And the first and second upper rails 21
Of the lower rails 22 and 23, and a pin 94 that can face the side surface of the open lever 85 through the holes 93.

Further, at the rear of the seat track, on the first top part 15 of the lower rail 11, a guide part 92a formed below the leaf spring 92 of the lock plate 91 is a guide plate as a guide which can be pressed. 96 are provided. The guide plate 96 has a parallel portion 9 extending in parallel with the upper rail 21 via the upper rail 21 and a space.
6b and an inclined portion 96a which is bent from the front end of the parallel portion 96b and extends toward the upper rail 21.

The distance between the parallel portion 96b of the guide plate 96 and the upper rail 21 is such that when the guide portion 92a of the lock plate 91 is guided by the parallel portion 96b of the guide plate 96, the pin 94 is attached to the side of the open lever 85. The values are set so that they face each other at intervals. Then, the guide portion 91a of the lock plate 91 is
The length of the pin 94 is set so that the pin 94 of the guide plate 96 can be pressed against the side surface of the open lever 85 when the pin 94 of the guide plate 96 passes through 6a and separates from the guide plate 96.

Next, the operation of the lock mechanism of the seat slide device having the above configuration will be described. The lock hole 47 of the lock lever 41 is engaged with the lock projection 19 of the lower rail 11 by the spring 53, and the sliding of the upper rail 21 is prohibited.

Here, when the handlebar 70 is lifted upward against the urging force of the spring 53, the lock lever 41 rotates about the pin 44, and the bent portion 45 side of the lock lever 41 moves downward. Then, the engagement of the lock hole 47 of the lock lever 41 with the lock projection 19 of the lower rail 11 is released. Therefore, the upper rail 21 is the lower rail 1
1 so that the upper rail 21 can move to a desired seat track position.

When the movement of the upper rail 21 to the desired position is completed, the operating force of the handlebar 70 is released. Then, the lock lever 41 also returns to the original position by the urging force of the spring 53, the lock hole 47 of the lock lever 41 engages with the lock projection 19 of the lower rail 11, and the sliding of the upper rail 21 is prohibited again.

Next, the operation of the walk-in mechanism of the above embodiment will be described. When the operating lever or the walk-in pedal of the reclining mechanism is operated without sitting on the seat, the reclining mechanism is unlocked, and the seat back leans forward toward the most forwardly inclined position by the urging force of the spring 82.

Then, the control lever 83 also rotates counterclockwise in FIG. 7, and the open lever 85 also rotates counterclockwise via the connecting rod 88 against the biasing force of the spring 89. Then, as shown in FIGS. 8 and 9, the contact portion 87 of the open lever 85 pushes the locking portion 52 of the lock lever 41, and the lock hole 47 of the lock lever 41 and the projection 10 of the lower rail 11 are engaged with each other. When released, the seat track is unlocked, and the upper rail 21 is moved to the foremost position by the urging force of a spring (not shown) serving as the third urging means.

At this time, when the open lever 85 rotates counterclockwise, the pin 94 of the lock plate 91 is rotated.
The push-contact state between the lever and the open lever 85 is released, and the pin 9 is released.
Reference numeral 4 protrudes into the movement range of the open lever 85, and prohibits the return of the open lever 85 to its original position.

Next, when the seat back is raised and the seat is moved backward, the guide portion 92a of the lock plate 91 passes through the inclined portion 96a of the guide plate 96, and reaches the parallel portion 96b. Is bent, the pin 9
4 is retracted, and the open lever 85 is
With the biasing force of, the actuator returns to the original position. At this time, the locking portion 5 of the lock lever 41 of the contact portion 87 of the open lever 85
The state of pressing 2 is released, the lock hole 47 of the lock lever 41 engages with the protrusion 10 of the lower rail 11, the seat track is locked, and further movement of the seat is prohibited.

In this specification, after the walk-in is released,
Moving the seat backward and locking the seat track at the position of the guide plate 96 is referred to as “memory return”.

[0035]

However, in the seat slide device having the above-described structure, the mechanism for performing the memory return, that is, the guide plate 96 and the lock plate 91 are provided on both the outer side and inner side seat tracks. Therefore, there is a problem that the number of parts is large.

The present invention has been made in view of the above problems, and an object thereof is to provide a seat slide device having a reduced number of parts.

[0037]

DISCLOSURE OF THE INVENTION The present invention for solving the above-mentioned problems is directed to first and second lower rails arranged side by side on a floor, slidably engaged with the first and second lower rails,
A seat track formed of first and second upper rails on which a seat is provided, a plurality of engaged portions formed in the longitudinal direction of the first and second lower rails, and longitudinal lengths of the first and second upper rails. Along the direction, the first and second upper rails are provided rotatably in the vertical direction, and the end portions thereof are provided with engaging portions that are engageable with the engaged portions of the lower rails. The first and second lock levers, the first and second lock levers being the first and second lock levers.
Lock mechanism composed of first and second urging means for urging in the direction of engaging with the lower rail, and the first of the first and second lock levers when a walk-in operation is performed.
And the second lower rail are disengaged to move the first and second upper rails forward, and then the first
And when the second upper rail moves rearward, the first
And a walk-in mechanism for re-engaging the first and second lock levers with the first and second lower rails at predetermined positions of the second lower rail. The mechanism transmits the drive for the first lock lever to the second lock lever via a cable.

First, when the lock mechanism is operated to obtain the desired seat track position, the first and second lock levers move against the first and second biasing means,
The engagement between the first and second lock levers and the first and second lower rails is released. Then, the first and second upper rails can slide with respect to the first and second lower rails, and can move to a desired seat track position.

When the desired seat track position is obtained, the operation of the first and second lock levers is released. Then, the urging force of the urging means causes the first and second
Of the lock lever again engages with the first and second lower rails, and the sliding of the first and second upper rails with respect to the first and second lower rails is prohibited.

Next, when the walk-in mechanism is operated to perform the walk-in operation, the operation force is transmitted to the first lock lever, and the engagement with the first lower rail is released. At the same time, the operating force is also transmitted to the second lock lever via the cable, the engagement with the second lower rail is released, the seat moves forward, and the distance from the rear seat widens.

Next, when the seat is moved rearward to return the seat to the original position, the first lock lever engages with the first lower rail at a predetermined position of the first lower rail. . This movement of the first lock lever is also transmitted to the second lock lever via the cable, and the second lock lever also engages with the second lower rail,
The rearward movement of the seat is prohibited.

Since the drive of the first lock lever of the walk-in mechanism is transmitted to the second lock lever via the cable, the walk-in mechanism is provided on the seat track side including the second lower rail and the upper rail. A mechanism for transmitting an operation force to the second lock lever when operated and a mechanism for engaging the second lock lever with the second lower rail at a predetermined position are unnecessary, and the number of parts can be reduced.

Further, since the cable is used as the transmission means, the space is saved, the number of parts is reduced, and the assembling is easy. Here, as an example of the walk-in mechanism, a third urging means for urging the first and second upper rails forward and a first tilt of the seat back of the seat drive the first and second first rails. Engagement between a first open lever that presses the first lock lever in a direction to release the engagement with the lower rail, an engaging portion of the second lock lever, and an engaged portion of the second lower rail. A second lock lever capable of pressing the second lock lever in the direction of releasing the engagement.
Open lever, fourth and fifth biasing means for biasing the first and second open levers in a direction of separating from the first and second lock levers, and the first lock lever pressing When the first open lever is engaged and disengaged, the first lower lever is provided with a stopper that is engageable and disengageable, and the stopper is disengaged from the first open lever. Some include a guide for guiding to the position and a cable for transmitting the operation of the first open lever to the second open lever.

In this case, when the walk-in operation is performed, the seat tilts forward, and the first open lever is also driven by the fourth biasing means against the biasing force by the seat tilting forward. Then, the first open lever presses the first lock lever against the biasing force of the first biasing means, and the engagement with the first lower rail is released. At this time, the stopper engages with the first open lever and prohibits the return of the first open lever to its original position. At the same time, the operation of the first open lever is also transmitted to the second open lever via the cable, and the second open lever is driven against the urging force of the fifth urging means. Then, the second lock lever presses the second lock lever against the biasing force of the second biasing means, and the engagement with the second lower rail is released.

The disengagement of the first and second lock levers from the first and second lower rails causes the first and second upper rails to move relative to the first and second lower rails. The seat is slidable, and the seat is moved forward by the urging force of the third urging means to open a space between the seat and the rear seat.

Next, when the sheet moved to the front is moved to the rear, the stopper is separated from the first open lever by the guide, and the first and second urging means urge the first and second urging means. The open lever is separated from the first and second lock levers, and the first and second lock levers are urged by the urging forces of the first and second urging means.
Of the lower rails, and further movement of the first and second upper rails is prohibited.

[0047]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. 1 is a block diagram of an outer side of an embodiment of a seat slide device of the present invention, FIG. 2 is a configuration diagram of an inner side of an embodiment of a seat of the present invention, and FIG.
3 is a configuration diagram of only a main part in FIG. 1 to 3, the same parts as those of the seat slide device described in the conventional example are designated by the same reference numerals, and the description thereof will be omitted. Also, for the inner side member and the same member as the outer side member, the number of the outer side member has "'(dash)".
Is indicated by the number.

In FIG. 1 showing the structure of the outer side, 100 is a hollow outer cable 100a and an inner cable 100b which is inserted through the outer cable 100a.
It is a cable consisting of. One end of the outer cable 100a is fixed to the upper rail 21 near the control lever 102 by using a metal fitting 101.

Further, one end of the inner cable 100b is locked to the other end of the control lever 102. Next, in FIG. 2 showing the configuration on the inner side,
The other end of the outer cable 100a of the cable 100 is attached to the vicinity of the upper rail 23 'near the open lever 104 by using a metal fitting 103. The other end of the inner cable 100b is locked to the rotating end of the open lever 104.

Next, the operation of the lock mechanism of the seat track having the above structure will be described. The lock holes 47, 47 'of the lock levers 41, 41' are engaged with the lock protrusions 19, 19 '(the lock protrusion 19' is not shown) of the lower rails 11, 11 'by the springs 53, 53', and the upper rail 21 , 2
Sliding of 1'is prohibited.

Here, when the operating portion 72 of the handlebar 70 is lifted upward against the biasing force of the springs 53, 53 ', the lock levers 41, 41' are set to the pins 44, 44 '.
Rotate around the lock lever 41, 41 'bent portion 4
The 5,45 'side moves downward and the lock levers 41,41'
The engagement of the lock holes 47, 47 'with the lock projections 19, 19' of the lower rails 11, 11 'is released. Therefore, the upper rails 21, 21 'are slidable with respect to the lower rails 11, 11', and the upper rails 21, 21 'can be moved to a desired seat track position.

Upper rails 21, 21 'to desired positions
When the movement of is completed, the operation force on the handlebar 70 is released. Then, the lock levers 41, 41 'are also returned to their original positions by the biasing force of the springs 53, 53', and the lock holes 47, 47 'of the lock levers 41, 41' are returned.
However, it engages with the lock projections 19 and 19 'of the lower rails 11 and 11', and the sliding of the upper rails 21 and 21 'is again prohibited.

Next, the operation of the walk-in mechanism of the above embodiment will be described. If the operating lever of the reclining mechanism or the walk-in pedal is operated without seating on the seat back, the reclining mechanism becomes unlocked and the seat back is tilted forward toward the forward tilted position by the biasing force of the springs 82, 82 '. To be

Then, the control lever 1 on the outer side
02 rotates counterclockwise in FIG. 1, and the open lever 85 also rotates counterclockwise via the connecting rod 88 against the biasing force of the spring 89. Then, the contact portion 87 of the open lever 85 pushes the locking portion 52 of the lock lever 41, the lock hole 47 of the lock lever 41 and the projection 10 of the lower rail 11 are disengaged, and the seat track on the outer side is released. It will be locked.

At this time, the open lever 85 rotates counterclockwise, so that the pin 94 of the lock plate 91 is rotated.
The push-contact state between the lever and the open lever 85 is released, and the pin 9 is released.
Reference numeral 4 protrudes into the movement range of the open lever 85, and prohibits the return of the open lever 85 to its original position.

At the same time, the rotation of the control lever 102 is transmitted to the open lever 104 on the inner side via the inner cable 100b of the cable 100. Then, the contact portion 105 of the open lever 104 on the inner side
Pushes the locking portion 52 'of the lock lever 41' to release the engagement between the lock hole 47 'of the lock lever 41' and the projection 10 'of the lower rail 11', and the seat track on the inner side is also unlocked. Become.

Since the outer side and inner side seat tracks are unlocked, the upper rails 21, 21 'are
Moves to the foremost position by the urging force of a spring (not shown) serving as the third urging means, and widens the distance from the rear seat.

Next, when the seat back is raised and the seat is moved rearward, the guide portion 92a of the lock plate 91 passes through the inclined portion 96a of the guide plate 96 and the paper barrel and the leaf spring are provided in the parallel portion 96b. 92 bends outwards,
The pin 94 is pulled in, and the open lever 85 returns to its original position by the biasing force of the spring 89. At this time, the state where the abutting portion 87 of the open lever 85 pushes the locking portion 52 of the lock lever 41 is released, and the lock hole 47 of the lock lever 41 engages with the protrusion 10 of the lower rail 11 so that the outer side seat track is closed. Is locked.

When the open lever 85 returns to its original position, the control lever 102 also returns to its original position via the connecting rod 88. This control lever 1
The return of 02 is the inner cable 100 of the cable 100.
It is transmitted to the inner side open lever 104 via b, and the open lever 104 also returns to the original position. When the open lever 104 returns to the original position, the abutting portion 105 of the open lever 104 becomes the locking portion 5 of the lock lever 41 '.
The state of pushing 2'is released, the lock hole 47 'of the lock lever 41' engages with the projection 10 'of the lower rail 11', the inner side seat track is also locked, and further movement of the seat is prohibited. To be done.

According to the above construction, the movement of the outer side control lever 102 for driving the outer side lock mechanism is transmitted to the open lever 104 of the inner side lock mechanism via the cable 100. The control lever 102, the connecting rod 88, the guide plate 96, and the lock plate 91 provided on the side seat slide become unnecessary for the inner side seat slide, that is, the second lock lever 41 'when the walk-in mechanism is operated. A mechanism for transmitting an operating force to the second lock lever and a mechanism for engaging the second lock lever with the second lower rail at a predetermined position are unnecessary, and the number of parts can be reduced.

Further, since the cable 100 is used as a means for transmitting the operating force from the outer side to the inner side,
It is space-saving and has a smaller number of parts as compared with the case where a transmission means such as a link is used, and the assembling becomes easy.

Further, by using the lock lever 41 rotatably provided in the upper rail 21 as the lock mechanism of the seat track, the lock mechanism becomes compact. Further, the handlebar 7 is provided over the front surface of the seat.
Since there is no operation unit 72, the operability is good.

The present invention is not limited to the above embodiment. In the embodiment described above, the cable 100
Although the inner wire 100b is connected to the control lever 102 on the outer side, the invention is not limited to this, and it may be connected to the open lever 85.

Further, in the above embodiment, the outer side mechanism may be replaced with the inner side mechanism and the inner side mechanism may be replaced with the outer side mechanism. Further, the seat track locking mechanism is not limited to the above embodiment. In the above embodiment, the protrusion 1 is used as the engaged portion on the lower rail 11 side.
Although the lock hole 47 is used as the engaging portion of the lock lever 41 of the upper rail 21, the lock hole may be provided on the lower rail side and the protrusion may be provided on the lock lever 41 of the upper rail.

[0065]

As described above, according to the seat slide device of the first invention, it is possible to slide on the first and second lower rails arranged in parallel on the floor and the first and second lower rails. A seat track formed of first and second upper rails that are engaged with the seat and are provided with seats;
A plurality of engaged parts formed along the longitudinal direction of the lower rail, and the middle part centered on an axis parallel to the floor and arranged along the longitudinal direction of the first and second upper rails. First and second lock levers rotatably provided on the first and second upper rails, and at one end thereof provided with an engaging portion engageable with an engaged portion of the lower rail; The first and second lock levers are connected to the first and second lock levers.
When a walk-in operation is performed and a lock mechanism including first and second urging means for urging the lower rail in a direction of engaging with the lower rail, the first and second lock levers of the first and second lock levers are performed. Disengages the lower rail to move the first and second upper rails forward, and the first and second upper rails are moved forward.
When the upper rail of the vehicle moves rearward, the first and second
And a walk-in mechanism that reengages the first and second lock levers with the first and second lower rails at a predetermined position of the lower rail, the walk-in mechanism includes: Since the drive for the lock lever is configured to be transmitted to the second lock lever via the cable, the drive for the first lock lever of the walk-in mechanism is transmitted to the second lock lever via the cable. As a result, the mechanism for transmitting the operating force to the second lock lever when the walk-in mechanism is operated and the second lock lever at the predetermined position are provided on the seat track side including the second lower rail and the upper rail. No need for a mechanism to engage the lower rail of No. 2,
The number of parts can be reduced.

Further, since the cable is used as the transmitting means, the space is saved, the number of parts is reduced, and the assembling is easy. The second invention is the walk-in mechanism in the first invention, and is driven by a third urging means for urging the first and second upper rails forward, and a forward tilt of the seat back of the seat, A first open lever that presses the first lock lever in a direction to release the engagement with the first lower rail, an engaging portion of the second lock lever, and an engaged portion of the second lower rail. A second open lever capable of pressing the second lock lever in a direction to release the engagement with the first portion, and the first and second
Fourth and fifth urging means for urging the open lever in a direction away from the first and second lock levers;
A stopper that can be engaged and disengaged with the first open lever when the first lock lever is pressed, a position that is provided on the first lower rail and that engages the stopper with the first open lever, A seat composed of a second lower rail and an upper rail, which is composed of a guide for guiding to a position to be separated from the first open lever and a cable for transmitting the operation of the first open lever to the second open lever. On the track side, a mechanism for transmitting an operation force to the second lock lever when the walk-in mechanism is operated and a mechanism for engaging the second lock lever with the second lower rail at a predetermined position are unnecessary, The number of parts can be reduced.

Further, since the cable is used as the transmission means, the space is saved, the number of parts is reduced, and the assembling is easy.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an outer side of an embodiment of a seat slide device of the present invention.

FIG. 2 is a configuration diagram of an inner side of an embodiment of a seat slide device of the present invention.

FIG. 3 is a configuration diagram of only a main part in FIGS. 1 and 2.

FIG. 4 is an exploded perspective view of essential parts of a conventional seat slide device.

5 is a cross-sectional view taken along the line AA after assembly in FIG.

FIG. 6 is a sectional view taken along line BB after assembly in FIG.

FIG. 7 is a side view of the configuration in FIG.

FIG. 8 is an enlarged view of a main part in FIG.

FIG. 9 is a diagram for explaining the operation in FIG.

10 is a D-direction arrow view without the walk-in mechanism after assembly in FIG. 4. FIG.

[Explanation of symbols]

 10 Protrusion (engaged part) 11 Lower rail 21 Upper rail 41 Lock lever 47 Lock hole (engagement part) 53 Spring (first and second biasing means) 85 Open lever 89 Spring (fourth and fifth biasing) Means) 91 lock plate 94 pin 96 guide plate 100 cable

Claims (2)

[Claims] 1. A first and a second lower rail arranged in parallel on a floor, and a first and a second upper rail slidably engaged with the first and second lower rails and provided with a seat. A seat track, a plurality of engaged portions formed along the longitudinal direction of the first and second lower rails, and a plurality of engaged portions disposed along the longitudinal direction of the first and second upper rails. And the second
First and second lock levers provided on the upper rail rotatably in the vertical direction and provided at an end thereof with engaging portions capable of engaging with the engaged portions of the lower rail, and the first and second lock levers. A lock mechanism composed of first and second biasing means for biasing the lock lever in a direction to engage with the first and second lower rails; and a walk-in operation, in which the first and second lock mechanisms are engaged. When the engagement of the lock lever with the first and second lower rails is released to move the first and second upper rails forward and then the first and second upper rails move rearward, And a walk-in mechanism for reengaging the first and second lock levers with the first and second lower rails at predetermined positions of the first and second lower rails. In machine Is seat slide apparatus characterized by transmitting the drive to the first latch in the second lock lever via a cable. 2. The walk-in mechanism includes a third biasing mechanism that biases the first and second upper rails forward.
Driven by the forward leaning of the seat back of the seat, and the first direction in the direction of releasing the engagement with the first lower rail.
The first open lever that presses the lock lever, and the second lock lever in a direction to release the engagement between the engaging portion of the second lock lever and the engaged portion of the second lower rail. A second open lever that can be pressed, and the first and second open levers are the first and second
Fourth and fifth biasing means for biasing the lock lever away from the lock lever, a stopper detachable from the first open lever when the first lock lever is pressed, and the first lock lever. A guide that is provided on the lower rail and that guides the stopper to a position where the stopper is engaged with the first open lever and a position where the stopper is disengaged from the first open lever; A seat slide device comprising: a cable for transmitting to an open lever;