JP2000318495A - Lock device of seat sliding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the certainty in the locking workmanship by an inner locking means and facilitate the mounting of a rail body without involving large-sized construction of rail. SOLUTION: A cam 44 to press an outer lock plate 24-O in the lock-off direction is installed rotatably on an outer runner 18-O and coupled with the outer end 16b-O of a release lever 16 interlockingly. An inner lock plate 24-I is operated under control directly by the release lever 16 while the outer lock plate 24-O is operated under control with the rotation of the can 44 interlocking with the motion of the release lever in such a way as capable of maintaining the given condition from the lock-off preceding to the inner lock plate and generating lock-on in a lag from the inner lock plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a so-called so-called "inner / outer" pair of rail members, which is capable of restricting or unregulating the operation of a pair of rail members under a synchronous locking operation of a locking means provided on each rail member. The present invention relates to a lock structure of a double-sided lock type seat slide device.

[0002]

2. Description of the Related Art Normally, a seat for a vehicle such as an automobile, in particular, a front seat of the automobile is slidably supported in a front-rear direction by a seat slide device interposed between the floor and the floor.

In this seat slide device, a pair of rails is provided in which a runner (also referred to as an upper rail) fixed to a seat side is slidably attached to a fixed guide rail (also referred to as a lower rail) on the floor side. The body is interposed between the seat and the floor at separate positions on the inner side (closer to the center) and the outer side (closer to the outside) in the lateral width direction of the vehicle. In this type of seat slide device, lock means that can be released by a release lever are provided on the inner and outer rail bodies, respectively, and a lock-on operation or a lock-off operation of each lock means is synchronized. so,
The slide restriction of the runner with respect to the guide rail and the restriction release can be integrally performed.

As a locking means in this type of rail body, for example, a form in which a lock claw of a lock plate is inserted and engaged with a series of lock holes drilled in a bottom wall of the guide rail, or an upper surface opening of the guide rail is suspended. There is known a so-called latch type configuration in which a series of lock claws formed on a piece is inserted into and engaged with a lock hole of a lock plate.

In such a latch-type locking means, a vertically movable, for example, a rotatable lock plate provided on the runner is provided under the biasing force of a lock spring, so that insertion between a lock hole and a lock claw can be performed. It is biased in the engagement direction, that is, in the lock-on direction. The inner and outer lock plates are connected between the runners of the respective sides via a release lever having a substantially U-shape in plan view and pivotally connected between the runners.

[0006]

In a front seat of an automobile, a belt anchor of a seat belt is usually provided on an inner runner. Therefore, it has been considered that the safety of the front seat and the like is further improved by increasing the reliability of the lock particularly in the inner rail body.

Conventionally, for example, by providing a phase difference in the operation of the lock plate on the inner side and the outer side, or by making the inner side locking claw longer than the outer side, the inner side locking means is connected to the outer side locking means. Lock-on with higher priority than the lock-on is generally considered as a measure to increase the reliability of the lock in the inner rail body.

However, in these constructions, the stroke of the lock plate in the guide rail (the vertical range).
Therefore, it is inevitable to increase the cross-sectional height of the guide rail, and the guide rail, and thus the rail body itself, tends to be increased in size and cost increases. In particular, in the configuration in which the lock claw provided on the guide rail is lengthened, the guide rail cannot be shared between the inner side and the outer side, and therefore, an increase in cost cannot be avoided from this point.

Also, the guide rail of the rail body is usually
It is fixed to the floor or the like by bolting. The bolt is usually screwed to the floor or the like after passing through a through hole of a guide rail, which is a so-called stupid hole, having a diameter relatively larger than the diameter of the bolt. There is a risk that the position of the guide rail, and thus the rail body, will shift between the inner and outer by an amount corresponding to the difference in diameter.

[0010] Such a displacement of the rail body between the inner and outer members may adversely affect the operation of the release lever, and eventually the lock-on and lock-off operations of the lock plate. In order to prevent the displacement of the rail body, a jig or the like is used to improve the accuracy of mounting the rail body. However, increasing the accuracy of the mounting operation using such a jig or the like involves complicating the operation itself, so that a reduction in workability is inevitable.

According to the present invention, there is provided a lock structure of a seat slide device for further improving the reliability of locking by an inner locking means and facilitating a mounting operation of a rail body without enlarging the rail body. It is intended to be provided.

[0012]

According to the present invention, a release lever having a substantially U-shape in plan is installed and pivotally mounted between inner and outer runners.
An inner side lock plate is connected to the inner side end of the release lever via an engagement pin so as to be interlockable,
A cam that enables the outer lock plate to be pressed in the lock-off direction is rotatably provided on the outer runner, and is operatively connected to the outer end of the release lever via an engagement pin.

The operation of the inner lock plate is directly controlled by the release lever, while the movement of the cam in conjunction with the operation of the release lever causes the outer lock plate to move to the inner lock plate. The operation is controlled so that the state can be maintained from the preceding lock-off and the lock-on of the inner lock plate can be delayed.

[0014]

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

In the lock structure of the seat slide device according to the present invention, as shown in FIG. 1, the seat slide device 10 includes locking means 12-I and 12-O, and a pair of inner and outer rail members 14-I. , 14-O are formed as so-called double-sided lock types, which are provided so as to be able to operate synchronously under the operation of the release lever 16.

As can be seen from FIGS. 2 and 3 in addition to FIG. 1, for example, runners (also referred to as upper rails) 18-I and 18-O are used as the rails 14-I and 14-O. ,
A configuration in which the guide rails (also referred to as lower rails) 20-I and 20-O are slidably mounted via rolling elements such as rollers 22 can be exemplified. However, this kind of rail body 14-
Since the configuration of I, 14-O is known and is not the subject of the present invention, a detailed description of the basic configuration of the rail body will be omitted here.

Here, as shown in FIGS. 1 to 3, locking means 12-I, 12-O in this type of rail body 14-I, 14-O is used.
For example, there is known a so-called latch type configuration in which lock-on and lock-off operations are performed by raising and lowering the lock plates 24-I and 24-O on the runners 18-I and 18-O side.

As can be seen from FIG. 1, in the embodiment of the present invention, the runners 18-I and 18-O are formed as a combination of two plates, respectively, and the arm-shaped lock plate 24-I is formed. , 24 -O are rotatably arranged and connected between the two plates by pivot pins 26.
Then, as shown in FIGS. 1 to 3, the horizontal bent pieces 24a formed at the free ends of the lock plates 24-I and 24-O are
While the lock hole 28 is drilled penetrating vertically,
A series of lock claws 30 that can be inserted and engaged in this lock hole,
The guide rails 20-I and 20-O are formed on the hanging pieces 20a of the upper surface opening.

The lock plates 24-I and 24-O are
For example, under the biasing force of a lock spring 32 serving as a torsion spring having one end 32a locked to the runners 18-I, 18-O,
It is biased in the direction of engagement of the lock hole 28 with the lock claw 30, that is, in the lock-on direction.

The rotation of the lock plates 24-I, 24-O, that is, the lock-on and lock-off operations of the lock means 12-I, 12-O are performed, for example, between the runners 18-I, 18-O. Erection,
It can be controlled by a pivotally supported release lever 16 having a substantially U-shaped planar shape.

As shown in FIGS. 1 to 3, the release lever 16 having a central portion at the front end 16a is provided at each of the inner and outer ends, that is, at the inner end 16-Ib and the outer end 16-Ob. For example, the extension levers 34-I and 34-O are integrally formed, and the release lever is rotatable between the respective runners under the pivotal attachment of the extension operation members by the support pins 38. It is supported by.

A torsion spring serving as a return spring 40, for example, is wound around the support pin 38, and each of the torsion springs is connected to the runners 18-I, 18-O and the extension operation pieces 34-I, 34-O. Under the biasing force caused by the locking of the terminal, the release lever 16
It is deviated in the downward direction of 16a, that is, in the counterclockwise direction in the figure.

Here, in the embodiment of the present invention, the engaging pins 42-I, 42-O are protruded from the extending operation pieces 34-I, 34-O. In the present invention, the release lever 16
The inner side end 16b-I of the engagement pin 42-I of the extension operation piece 34-I
The outer side end 16b-O is connected to the inner side lock plate 24-I via the
An extension operation piece 34-O is attached to a cam 44
Are connected so as to be able to interlock with each other via an engagement pin 42-O, and via this cam, the rotation thereof is connected to be able to be transmitted to the outer side lock plate 24-O.

As can be clearly understood from FIG.
Is formed so that the operation of the outer lock plate can be controlled under engagement and pressing with the engagement end 24b of the outer lock plate 24-O, and the outer lock plate is rotated by the rotation of the cam. The operation is controlled so that the state can be maintained from the lock-off preceding the inner lock plate 24-I and the lock-on can be delayed with respect to the inner lock plate.

That is, in the lock structure of the present invention, the operation of the inner locking means 12-I is directly controlled by the release lever 16, while the outer locking means 12-I is controlled.
The operation of -O is indirectly controlled via the cam 44.

The cam 44 is pivotally attached to the outer runner 18-O by a pivot pin 46. The cam 44 is connected to the outer end 16b-O of the release lever, that is, the engaging pin 42-O of the extending operation piece. The deviation of the rotation trajectory is ensured by, for example, making the cam insertion hole 48 a long hole.

As shown in FIGS. 1 to 3, the operation range of the release lever 16, that is, the rotation range of the lock plates 24-I and 24-O on the inner side and the outer side is determined by the runners 18-I and 18-. It can be defined by inserting the engaging pins 42-I and 42-O into the elongated guide holes 50 formed in the -O.

The operation of the inner and outer locking means 12-I and 12-O in conjunction with the release lever 16 will be described below.

As shown in FIG. 2, when the release lever 16 is not operated, the release lever is biased and held under the biasing force of the return spring 40 at a substantially horizontal lower position as an initial position. In the lock means 12-I of the inner side rail body,
The lock plate 24-I is pushed up by the engagement pin 46.
Are held at the engagement position of the lock claw 30 and the lock hole 28, that is, the lock-on position. The inner lock plate 24-I is biased and held at its lock-on position even under the biasing force of the lock spring 32.

As shown in FIG. 3, in the initial state of the outer locking means 12-O accompanying the non-operation of the release lever 16, the cam 44 causes the lock plate to move under the biasing force of the return spring 40. Since the lock plate 24 is biased in the pressing release direction with respect to the engagement end 24b, the lock plate 24
Lock-on by -O is maintained. The lock spring 32
The same applies to the outer side lock plate 24-O which is biased and held at the lock-on position under the biasing force.

When the distal end of the release lever 16 is pulled up in the lock-off direction, that is, upward from the initial lock-on state, as shown in FIG. 2, the engagement pin 42-I of the inner-side extending operation piece is used. Engagement end of inner side lock plate 24-I
The engagement and pressing of 24c causes the inner lock plate to start rotating in the lock-off direction (counterclockwise in the drawing) and, as shown in FIG.
44 is rotated clockwise in the figure in accordance with the release operation of the release lever, and the outer lock plate 24-O is locked in the lock-off direction (see FIG. (Counterclockwise).

At this time, while the inner lock plate 24-I rotates in the lock-off direction substantially corresponding to the rotation angle of the release lever 16, the outer lock plate 24-O is interlocked with the release lever. Since the operation is controlled by the rotation of the cam 44, as shown in FIGS. 4 (A) and 4 (B), even when the operation is linked to the release lever, the outer side lock plate is kept at the engagement end 24b by the cam. , The lock-off is performed prior to the inner lock plate. That is, in the lock structure of the present invention, a lock-off state of only the outer lock means 12-O and a lock-on state of only the inner lock means 12-I exist, as shown in the figure. .

When the release lever 16 is further pulled up, as shown in FIGS. 5A and 5B, the inner lock plate 24-I is locked off with a delay from the outer lock plate 24-O. , Runner 18- against guide rails 20-I, 20-O
The slide of I, 18-O, that is, the operation of the rail bodies 14-I, 14-O becomes possible.

When the operating force of the release lever 16 is released or loosened from the lock-off state of the lock means 12-I and 12-O on both the inner side and the outer side as shown in FIG.
As shown in (B), the rotation of the inner side lock plate 24-I with the return of the release lever in the initial position direction causes
While the gap between the lock hole 28 and the lock claw 30 on the inner side is partially locked as shown in the figure, the outer lock plate 24-O is left in the lock-off state by the cam 44. It is. That is, at the time of the lock-on operation, the inner lock means 12-I is locked on prior to the outer lock means 12-O.

Then, when the release lever 16 is further returned to the initial position and the cam 44 is rotated to the position where the pressing is released from the engagement end 24b, the outer lock plate 24-O is delayed with respect to the inner lock plate 24-I. The lock is turned on, and both the lock means 12-I and 12-O on the inner side and the outer side are returned to the lock-on state.

As described above, in the lock structure of the seat slide device according to the present invention, the lock-on of the inner lock means 12-I is prioritized, and the outer lock means 12-O operates in accordance with this. Is controlled.

That is, since the lock-on of the outer lock means 12-O does not occur when the inner lock means 12-I is locked off, the phenomenon that only the outer lock means is locked on is a certainty in the present invention. Be eliminated. Therefore, according to the present invention, the lock-on of the inner lock means 12-I is more reliable.

In the present invention, it is sufficient to rotate the inner and outer lock plates 24-I and 24-O as long as the lock between the lock claw 30 and the lock hole 28 and the lock-off can be obtained. The stroke of the lock plate in the guide rails 20-I, 20-O is minimized on either side. Therefore, the cross-sectional height of the guide rails 20-I, 20-O is suppressed, and thus the guide rails can be downsized, and the rail bodies 14-I, 14-O can be downsized, and the cost can be reduced. It becomes possible.

Further, without changing the stroke of the lock plate or the length of the lock claw, the lock plates 24-I, 2
Since the timing of the rotation of the 4-O, and thus the timing of lock-on and lock-off of the lock means 12-I and 12-O on the inner side and the outer side are merely shifted by the cam 44, the guide rail 20- I and 20-O can be shared, and from this point, the cost can be sufficiently reduced.

Here, in the embodiment of the present invention, the rotation angle of the cam 44 accompanying the operation of the release lever 16 is necessarily larger than the rotation angle of the outer lock plate 24-O. In other words, even if the operation of the cam 44 due to the operation of the release lever 16 varies, this variation can be sufficiently absorbed under the operation of the cam, so that the outer lock plate 24-I with respect to the inner lock plate 24-I. The operation deviation of O can be sufficiently suppressed.

That is, according to the present invention, the inner and outer ends 16b-I and 16b-O of the release lever are caused by the displacement between the inner and outer rails 14-I and 14-O. Even if there is a shift in the operating angle between the rails, the shift does not directly affect the operation of the lock means 12-I and 12-O on the inner and outer sides. The operation using a jig or the like at the time of mounting can be omitted.

Accordingly, by simplifying the mounting operation, the workability at the time of mounting the inner and outer rail bodies 14-I and 14-O, that is, the seat slide device 10, can be sufficiently improved.

Here, in the embodiment of the present invention, the lock plates 24-I and 24-O are illustrated as rotatable arms, but the lock holes 28 are formed in the runners 18-I and 18-O. On the other hand, as long as it is possible to move up and down, it is not limited to this,
For example, the lock plate itself may be provided to be able to move up and down with respect to the runner.

Further, the lock claw 30 of the upper surface opening hanging piece 20a of the guide rail 20-I, 20-O is inserted into the lock hole 28 regulated by the lock plate 24-I, 24-O, and is engageable. As the lock means 12-I and 12-O are embodied, but not limited thereto, for example, a series of lock holes formed by drilling the lock claws of the lock plate in the bottom wall of the guide rail, It may be configured to be inserted and engaged under the descent.

The lock hole 28 and the lock claw in the drawing
The number and shape of 30 are merely examples, and the lock holes and lock claws are inserted into and engaged with the runners 18-I, 18-O with respect to the guide rails 20-I, 20-O. The number and the shape are not limited to those shown in the figure because it is sufficient that the slide can be regulated.

In the embodiment of the present invention,
Extending operation pieces 34-I and 34-O are provided at the inner end 16b-I and the outer end 16-O of the release lever, respectively.
42-O are protruding respectively, but the engagement pin is the release lever
Since it is enough if it can be moved integrally with 16 in the elevating direction,
However, the present invention is not limited to this. For example, the extension operation piece may be omitted, and an engagement pin may be directly protruded from each side end of the release lever extended by a required amount.

However, if the extension operation pieces 34-I, 34-O are provided, the inner end 16b-I and the outer end 16b of the release lever are provided.
Since special processing for -O can be omitted and the release lever can be shared with other models, the configuration can be simplified and the cost can be sufficiently reduced from this point as well.

In the seat slide device 10 shown in the embodiment of the present invention, since the lock-on of the inner lock means 12-I is further ensured, a belt anchor is provided on the inner runner 18-I. The present invention is suitable for a seat slide device mounted on a front seat or the like of an automobile. However, by ensuring lock-on by one of the lock means, it is possible to reliably prevent incomplete lock-on, that is, a so-called half-lock state. It goes without saying that even if the present invention is applied to a seat or the like, effects such as securing safety of a seated person and facilitation of wearing can be sufficiently secured.

The embodiments described above are intended to explain the present invention, and do not limit the present invention in any way, and all modifications and alterations within the technical scope of the present invention are also included in this embodiment. It goes without saying that it is included in the invention.

[0050]

As described above, according to the lock structure of the seat slide device according to the present invention, the lock-on of the inner lock means is prioritized, and the phenomenon of locking only the outer lock means is eliminated. Therefore, the lock-on reliability of the inner locking means is further enhanced.

Since it is sufficient to raise and lower the lock plates on the inner and outer sides with a minimum stroke at which the lock claw and lock-on between the lock holes and lock-off can be obtained, the cross-sectional height of the guide rail is suppressed. Therefore, the size of the guide rail and the size of the rail can be reduced, and the cost can be sufficiently reduced.

Further, since the rotation timing of the lock plate is merely shifted by the cam without changing the stroke of the lock plate or the length of the lock claw, the guide rail can be shared. Therefore, the cost can be sufficiently reduced.

Further, according to the present invention, since the cam absorbs the displacement of the operation between the inner and outer locking means, the cam between the locking means due to the positional displacement between the inner and outer rails. , The displacement of the inner and outer rails can be sufficiently relaxed.

Therefore, the simplification of the mounting work sufficiently improves the workability when mounting the inner and outer rail bodies, that is, the seat slide device.

Further, if extension operation pieces are provided on the inner side end and the outer side end of the release lever, special processing and the like for each side end can be omitted, and the release lever can be shared with other models. Therefore, simplification of the configuration, reduction of cost, and the like can be sufficiently achieved from this point.

[Brief description of the drawings]

FIG. 1 is a schematic exploded perspective view of a seat slide device showing a lock structure of a seat slide device according to the present invention.

FIG. 2 is a partially broken schematic front view of an inner rail body in an initial state (lock-on state) of a lock unit.

FIG. 3 is a schematic front view of the outer rail body, partially broken, in an initial state (lock-on state) of the lock means.

FIG. 4 is a schematic front view of each of the inner and outer locking means, partially broken, showing a preceding lock-off state of the outer locking means.

FIG. 5 is a partially cutaway schematic front view of the inner and outer locking means showing a lock-off state of the inner and outer locking means.

[Explanation of symbols]

 10 Seat slide device 12-I, 12-O Lock means 14-I, 14-O Rail body 16 Release lever 18-I, 18-O Runner 20-I, 20-O Guide rail 24-I, 24-O Lock Plate 34-I, 34-O Extension operating piece 42-I, 42-O Engagement pin 44 Cam

Claims (2)

[Claims] 1. A locking means for locking and unlocking a pair of inner and outer rails, each of which has a runner slidably mounted on a fixed guide rail, by means of a lifting / lowering operation of a lock plate on the runner side. However, in a double-sided lock type seat slide device provided so as to be synchronously operable under operation of a release lever, a release lever having a substantially U-shaped plane is erected and pivotally mounted between inner and outer runners. The inner lock plate is connected to the inner end of the release lever via an engaging pin so as to be interlocked with each other, and a cam that enables the outer lock plate to be pressed in the lock-off direction is turned to the outer runner. It is movably provided, and is operatively connected to the outer end of the release lever via an engagement pin. While the operation is directly controlled by the release lever, the outer lock plate maintains its state from the lock-off preceding the inner lock plate by the rotation of this cam in conjunction with the operation of the release lever. A lock structure of the seat slide device, wherein the operation is controlled so that the lock-on of the inner side lock plate can be delayed. 2. An extension operation piece is integrally provided at each of an inner side and an outer side end of a release lever, and an inner side lock is provided via an engagement pin projecting from the extension operation piece. 2. The lock structure for a seat slide device according to claim 1, wherein the lock plate of the means and the cam of the outer lock means are connected to the release lever so as to be interlockable.