JPH1199857A - Locking structure of seat slide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely ensure the lock on the inner side and on the outer side without degradation in the mounting workability and in the operability of an operation lever. SOLUTION: Out of synchronously operable locking mechanisms (i, o) on the inner side and on the outer side in a locking structure, the length L1 of a locking claw 38a(i) on the inner side is larger than the length L2 of the locking claw 38a(o) on the outer side by the length capable of obtaining the engagement with at least a locking hole 36, and the locking claw on the inner side can be inserted in the locking hole prior to the locking claw on the outer side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called double-sided lock in which the operation of a pair of inner side and outer side rails can be regulated under synchronous locking operation of locking means provided on each rail. The present invention relates to a lock structure of a seat slide device of a type.

[0002]

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

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

[0004] As a locking means of this kind of seat slide device, for example, a so-called latch for locking by inserting and engaging a corresponding locking claw of a lock plate into a series of locking holes formed in a bottom wall of a guide rail. The composition of the formula is known. In such a latch type locking means, the lock plate is provided on the runner via, for example, a rotating arm so as to be able to move up and down. It is biased in the mating direction, that is, in the locking direction.

[0005] Rotating arms on the inner side and the outer side are integrally and rotatably connected via interlocking means such as a joint pipe. Under the locking operation of the side locking means, the slide of the runner with respect to the guide rails of the pair of rail bodies, that is, the operation of the seat slide device can be regulated.

[0006]

The guide rails and runners of the seat slide device are usually fixed to the floor or the lower surface of the seat by bolting or the like.
In this case, the bolt or the like is inserted and screwed through an insertion hole formed in the opposing member, but this insertion hole is usually a so-called stupid hole having a diameter larger than the diameter of the bolt. However, there is a possibility that the position of the guide rail or the runner shifts in the front-rear direction between the inner side and the outer side by an amount corresponding to the difference in diameter.

[0007] Such a positional deviation between the guide rail or the runner between the inner side and the outer side, particularly a positional deviation of the lock hole in the front-rear direction, is usually caused.
The so-called play range between the locking hole and the locking claw is ensured. However, in the case where the displacement between the guide rails on the inner side and the outer side and between the runners is excessively displaced in opposite directions, etc., the lock claws of the lock arm on one side are sufficiently caught on the periphery of the lock hole. , Which may cause a so-called half-lock state.

Therefore, conventionally, in order to prevent such a half-lock state, a high accuracy is required at the time of mounting the rail body by using a jig or the like. Higher precision involves more complicated mounting work, and a reduction in workability is inevitable.

Here, as a means for preventing such a half-lock state, for example, it is conceivable to minimize the diameter of an insertion hole serving as a stupid hole. However, in such a configuration, it becomes difficult to insert a bolt or the like into the insertion hole, and in this respect, a decrease in workability due to complication of work is inevitable.

Further, since the lock plate of the locking means is biased in the locking direction under the biasing force of the lock spring, the biasing force applied to the lock plate is increased, and a large bias of the lock spring is generated. By forcibly moving the lock plate in the lock direction under force,
A configuration is also conceivable in which a half-lock state caused by a displacement of the lock hole between the inner side and the outer side is prevented. However, since the biasing force applied to the lock plate directly affects the operating force of the operating lever, when the biasing force of the lock spring is increased, the reliability of locking is improved, but the operating force of the operating lever is increased. And at the same time, the operation becomes complicated. Therefore, under such an increase in the biasing force of the lock spring, it is inevitable that the operability of the operating lever is reduced.

According to the present invention, there is provided a lock structure of a seat slide device for securing a secure lock on an inner side and an outer side without deteriorating workability when mounting a rail body and operability of an operation lever. It is intended to be provided.

[0012]

According to the present invention, a lock means provided on an inner side and an outer side is provided with a series of lock holes formed in a guide rail side, A lock plate integrally provided with a lock claw that can be inserted and engaged in the hole, and a lock plate provided on the runner side so as to be movable up and down; And locking means on each side are operatively connected in synchronism by interlocking means.

[0013] The lock claw of one of the inner side and the outer side lock plate can be inserted into the lock claw of the other lock plate at least by an amount that can be engaged with the lock hole, When the other lock claw is inserted into the lock hole, the one lock plate is further moved in the locking direction integrally with the other lock plate.

[0014]

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

As shown in FIGS. 1 and 2, in the lock structure of the seat slide device according to the present invention, the seat slide device 10 includes a pair of rail members 14 (i, i) provided with lock means 12 (i, o). , O) are arranged between the seat 16 and the floor surface 18 at positions spaced apart from the inner side (closer to the center) and the outer side (closer to the outside) in the width direction of a vehicle such as an automobile. The locking means 12 (i, o) on the inner side and the outer side are connected by an interlocking means 22 so as to be operable synchronously under operation of the operation lever 20.

As can be seen from FIG. 3 in addition to FIGS. 1 and 2, the rail body 14 (i, o) of the seat slide device is a runner (slide rail, upper rail, etc.) fixed to the seat 16. ) 24 is formed as a unit body which is slidably attached to a guide rail (also referred to as a lower rail) 26 fixed to the floor 18 via a pair of rollers 28 and the like.

In this embodiment, the bent piece
The runner 24 is seated on the seat 16 via bolts 30 fixed to 24a.
The guide rail 26 can be fixed to the floor 18 via an insertion pin 34 fixed to the leg 32.

As can be clearly seen from FIG. 4 (A) in addition to FIGS. 1 and 3, the inner side and outer side locking means 12 (i, o) provided on the rail body 14 (i, o). )
Is a lock plate 38 on the runner side having a series of lock holes 36 formed in a guide rail side, for example, a bottom wall 26a of the guide rail 26, and a lock claw 38a which can be inserted and engaged in the lock hole at the lower end. With the combination.

The lock plate 38 is, for example,
The upper end extension piece 38b is freely inserted into the cut-out space 40 provided at the upper end of the bent upper wall 24b into the insertion hole 42 of the upper wall 24b. Then, one end of a rotating arm 46 pivotally attached to the runner 24 via a pivot 44 that can be integrally rotated.
The lock plate 38 is supported by the runner so as to be able to move up and down by 46a.

Here, since the lock plate 38 is moved up and down in the vertical direction along the space 40 of the runner, one end 46a of a turning arm that turns around a support shaft (fulcrum) 44 is used.
Is different in the movement locus. Therefore, in this embodiment, the lock plate 38 and one end 46a of the rotating arm are provided.
Of the insertion holes for the pivot pin 48 that pivotally connects the lock plate and the lock plate, for example, the insertion hole 50 at one end of the rotating arm is formed as an elongated hole, and the pivot pin is moved in the elongated hole. The displacement of the movement locus with one end of the moving arm can be guaranteed.

As shown in FIGS. 2 and 3, a biasing force can be applied to the lock plate 38 in the direction in which the lock claw 38 a is inserted into and engaged with the lock hole 36, that is, in the lock direction.
A lock spring 52 is provided. As the lock spring 52, for example, a torsion spring wound around the outwardly extending end 44a of the support shaft 44 can be used, and each end of the torsion spring is connected to the upper wall 24b of the runner and the other ends of the rotating arm 46. End 46b side and
Each is locked.

As shown in FIGS. 2 and 3, in such a seat slide device 10, the inner side and outer side locking means 12 (i, o) are operatively connected in synchronism by the interlocking means 22. Operating lever 20
However, the lock means on each side is provided so as to be integrally unlockable. As the interlocking means 22, for example, a joint pipe 23 provided between support shafts 44 on the inner side and the outer side can be used. In one embodiment of the present invention, the rotation arm 46 on each side is integrally formed under the condition that the inwardly extending end 44b of the support shaft 44 is inserted into and fixed to each end of the joint pipe 23. Are rotatably connected.

The operation lever 20 having a support shaft 54 at the base end, which can be integrally rotated, is rotatably supported by, for example, a bracket 56, and is engaged with a link arm 58 fixed to the inner end of the support shaft. The other end 46b of the rotating arm can be pressed downward by the mating pin 60, and is disposed on the runner 24 of the rail body 14o on the outer side.

The bracket 60 is fixed to the runner 24 via a support plate 62 extending outward from the bent piece 24a in front of the runner 24.

The operating lever 20 is biased toward the initial position under the biasing force of the return spring 64. For example, a torsion spring wound around the support shaft 54 can be used as the return spring 64, and each end of the torsion spring is locked to the operation lever 20 and the bracket 56, respectively.

In the embodiment of the present invention, the outer end 62a of the support plate 62 is bent upward to function as a stopper, so that the outer end 62a can move downward (clockwise in FIG. 3).
Excessive rotation of the operation lever 20 is prevented.

As shown in FIG. 3, in such a configuration, the operating lever 20 is pulled counterclockwise in the figure against the biasing force of the return spring 64, and the other end of the rotating arm is By pushing down 46b clockwise in the figure, the inner side and outer side rotating arms 46 are integrally rotated clockwise against the biasing force of the respective lock springs 52. Then, the lock plate 38 rises due to the rotation of the rotation arm 46 in the clockwise direction, and the lock claw 38a separates from the lock hole 36 accompanying the rotation, whereby the inner side and outer side lock means 12 (i, The lock of o) is released integrally (see FIG. 4B).

The runner 24 with respect to the guide rail 26
After the front and rear positions of the seat 16 are arbitrarily set under the slide of above, if the operation force of the operation lever 20 is released, the operation lever and the rotating arm 46 are moved to the respective biasing forces of the lock spring 52 and the return spring 64 When the lock claw 38a of the lock plate is aligned with the lock hole 36 near the corresponding position, the lock claw 38a is biased toward the initial position.
The insertion and engagement of the lock claws into the lock holes lock the inner side and outer side locking means 12 (i, o) again (see FIG. 4A).

Here, in the lock structure of the seat slide device of the present invention, the lock claw 38a of the lock plate on either the inner side or the outer side is
At least the amount of engagement with the lock hole 36 can be inserted before the lock claw of the other lock plate.

As shown in FIGS. 1, 3, and 4A, in one embodiment of the present invention, the length L1 of the lock claw 38a (i) of the lock plate on the inner side is used.
The lock claw 38a (o) of the outer side lock plate
For the length L2, the length that can be engaged with the lock hole 36,
For example, the length L3 about the thickness of the bottom wall 26a of the guide rail
Only long. In other words, the inner side, so that the relationship between the lengths of the lock claws 38a (i, o) is L1> L2.
An outer side lock plate 38 (i, o) is formed.

Since the lock plates 38 (i, o) on the inner side and the outer side move up and down integrally, the up and down strokes of the lock plates on each side correspond to the lock pawls 38.
The stroke required for the long inner side lock plate 38i, that is, the stroke in which the lock claw 38a (i) of the inner side lock plate can be securely separated from the lock hole 36 (see FIG. 4B). .

In such a configuration, the operation lever 20
When the runner 24 slides after the release of the operating force, the long inner side locking claw 38a (i) causes the bottom wall of the guide rail
Slide on top of 26a. Then, when the inner side locking claws 38a (i) are aligned with the corresponding locking holes 36, first, as shown in FIG. The claw 38a (i) is inserted and engaged with the corresponding lock hole 36 by a length L3 which is a difference between the lengths of the lock claws prior to the short lock claw 38a (o) on the outer side. .

At this time, the outer side locking claw 38a
If (o) is similarly aligned with the lock hole 36, the inner side and the outer side lock plates 38 (i, o) are synchronized, and thus integrally lowered under the synchronized lowering of the inner side,
The locking means 12 (i, o) on the outer side is locked at the same time (see FIG. 4A).

Here, the position of the lock hole 36 is shifted in the front-rear direction between the inner side and the outer side, and the lock claw 38a (o) on the outer side is locked when the lock claw 38a (i) on the inner side is inserted earlier. If the holes are not aligned, as shown in FIG.
The lowering of (i, o) is stopped at the engagement position between the upper surface of the bottom wall 26a of the guide rail and the lock claw 38a (o) on the outer side.
However, in one embodiment of the present invention, the lock claw 38a (i) on the inner side is inserted into and engaged with the lock hole 36 by a length L3 which is a difference between the lock claw lengths at this time. Therefore, the front-back position of the seat 16 is set to the position.

In this front-back position, the seat 16
When the outer side lock claw 38a (o) is slightly moved back and forth, the outer side lock claw 38a (o) moves in the range of the play of the inner side lock claw 38a (i) with respect to the lock hole 36, so that the outer side lock claw with respect to the lock hole is An alignment is obtained.
As described above, if the alignment of the outer side lock claws 38a (o) with the lock holes 36 is obtained later than the inner side lock claws 38a (i), the inner side and outer side lock plates 38 (i, o ) Falls further at the same time,
Locking of the locking means 12 (i, o) on each side is surely performed.

As described above, according to the lock structure of the seat slide device according to the embodiment of the present invention, even if the position of the lock hole 36 is shifted between the inner side and the outer side in the front-rear direction, The preceding insertion and engagement of the long locking pawl 38a (i) ensures that the runner 24, that is, the seat 16, is stopped at that position. And
The engagement of the inner side with the long locking claw 38a (i) is positioned, and the fine movement of the runner 24 back and forth within the range of play between the long locking claw and the lock hole 36 causes a short locking of the outer side to the lock hole. The insertion and engagement of the claws 38a (o) from the alignment, that is, the locking of the inner side and outer side locking means 12 (i, o) can be easily secured.

That is, the permissible range of the displacement of the lock hole 36 between the inner side and the outer side can be widened, and the runner 24 and the guide rail 26 are attached to the seat 16 and the floor 18, that is, the rail body 14 (i, o). )), The locking of the locking means 12 (i, o) on each side is improved without maintaining a high accuracy in mounting, and thus the workability is improved by simplifying the mounting work.

Further, without increasing the biasing force of the lock spring 52, the length L1
It is sufficient to form the outer side locking claw 38a (o) longer than the length L2, so that the locking of the locking means 12 (i, o) of each side can be performed without lowering operability and complicating the configuration. Is more reliable.

Further, in the lock structure of the seat slide device according to the embodiment of the present invention, even if the lock state is only the long inner side lock claw 38a (i), that is, the preceding lock state, the lock claw can be used. Is reliably engaged with the lock hole 36 at the length L3, so that a half-lock state (also called a pseudo-lock state) in which the lock is uncertain can be reliably avoided. And the long inner side lock claw 38
Even in the precedent lock state of only a (i), the insertion and engagement of the outer side lock claws 38a (o) into the lock holes 36 due to the longitudinal movement of the runner 24 due to vibrations or the like during the running of the vehicle. Since it is obtained automatically and easily, high safety of the seat slide device 10 can be easily secured.

Here, in the embodiment of the present invention described above, the inner side locking claw 38a (i) is formed longer than the outer side locking claw 38a (o), but one is longer than the other. The shape is not limited to this as long as it is formed, and conversely, the outer side lock claw may be formed longer than the inner side lock claw.

However, in a front seat of an automobile or the like, an anchor (buckle side attachment) of the seat belt is fixed to the inner side runner 24 in both the driver seat (driver seat) and the assistant seat (passenger seat). Therefore, it is desirable to increase the length of the inner-side lock claw 38a (i) for the purpose of securing the lock strength enough to withstand the traction force from the seat belt.

Further, in the embodiment of the present invention, the lock plate 38 is embodied as being vertically movable up and down. However, the lock hole 38 is integrally lifted by the inner side and the outer side. It is not limited to this as long as it can be inserted into and engaged with 36, and the present invention is not limited to this. For example, a lock plate and a rotating arm 46 may be integrated, and lifting and lowering on an arc around the support shaft 44 of the rotating arm may be performed. With lock claw 38
A lock plate may be formed so that a can be inserted into and engaged with the lock hole.

Further, the lock hole 36 is provided on the lower wall of the guide rail.
Although it is perforated in 26a, it is sufficient that the lock claw 38a can be inserted under the elevation of the lock plate 38, and is not limited to this.For example, a separate support plate fixed to the guide rail may be used. Alternatively, a lock hole into which the lock claw of the lock plate can be inserted may be formed by drilling.

By the way, in the lock structure of the seat slide device of the present invention, the lock claw 38a of the lock plate on either the inner side or the outer side is used.
At least by the amount that can be engaged with the lock hole 36,
Since it is sufficient that the lock pawl can be inserted before the lock pawl of the other lock plate, the present invention is not limited to the configuration in which the length of the lock pawl is changed. For example, the lock of the inner side and the outer side having the lock pawl 38a of the same length is used. Plate 38 (i, o)
May be configured to precede the other one by the corresponding amount.

FIG. 5 shows another embodiment of the lock structure of the seat slide device of the present invention. In the seat slide device 110 according to another embodiment of the present invention, the inwardly extending end 44b of one support shaft 44 of the inner side and outer side rotating arms 46, for example, the outer side locking means 12
o, the inwardly extending end of the support shaft is integrally and rotatably fixed to a joint pipe 123 constituting the interlocking means 22, while the other end, namely, the inner side locking means 12
The inwardly extending end of the support shaft i is rotatably inserted and connected to the corresponding end of the joint pipe. A pair of a first link 66 and a second link 68, which are fixed to face each end, are provided between the rotatably connected joint pipe 123 and the inwardly extending end 44b of the support shaft. Are linked so as to be interlockable.

The basic structure of the inner side and outer side rails 14i, 14o of the seat slide device 110 of FIG. 5 and the lock means 12i, 12o provided thereon are the same as those of the embodiment of the present invention described above. Since the seat slide device 10 according to the present embodiment is not different from the seat slide device 10 according to the present embodiment, the description of the seat slide device 110 according to another embodiment of the present invention is omitted here since it can be referred to from above.

As can be seen from FIG. 6 (A) in addition to FIG. 5, the first link 66 fixed to the corresponding end of the joint pipe 123 integrally includes the engaging pin 70 projecting in the second link direction. Is formed. And, this engagement pin 70
An interlocking window 72 is formed in the second link 68 so as to be able to engage with the peripheral edge thereof through a predetermined play.

In such a configuration, the first link 66, the second
One of the links 68 is rotatable ahead of the other by the play between the engagement pin 70 and the periphery of the interlocking window 72, and the engagement between the engagement pin and the periphery of the interlocking window is Thereafter, between the first link and the second link, that is, between the inner side and outer side rotating arms 44, and the lock plate 38 (i,
The space between o) can be moved up and down integrally (see FIGS. 6A and 6B).

Here, as shown in FIG. 6 (A), in the seat slide device 110 according to another embodiment of the present invention, the lock pawl of the inner side lock plate 38 (i) is provided.
38a (i) length L1 and outer side lock plate 38
The length L2 of the lock claw 38a (o) in (o) is the same length. That is, the relationship between the lengths of the lock claws 38a (i, o) is L1 = L2.
The inner side and outer side lock plates 38 (i, o) are formed so as to satisfy the following relationship.

In another embodiment of the present invention, the side of the first link 66 on which the engaging pin 70 is provided, that is, the outer side locking claw 38a (o) is engaged with the locking hole 36 for engagement. The amount obtained, for example, the bottom wall 26a of the guide rail
Of the other side, that is, the inner-side lock claw 38a (i) can be lowered by an amount L3 corresponding to the thickness of the first side.
The play between the engagement pin 70 of the link and the periphery of the interlocking window 72 of the second link is set.

In such a configuration, first, FIG.
By the unlocking operation by the operation lever 20 from the locked state shown in (A), the first link 66 and the second link 68 are turned clockwise under the engagement of the engagement pin 70 with the upper edge of the interlocking window 72. To rotate integrally. Then, due to the integral rise of the inner side and outer side lock plates 38 (i, o), the lock means 12 (i, o) on each side are integrated as shown in FIG. 6 (B). The runner 24 slides after the operating force of the operating lever 20 is released,
Lock claw 38a (i, o) on inner side and outer side
Slides on the upper surface of the bottom wall 26a of the guide rail.

Thereafter, the outer side locking claw 38a (o)
Are aligned with the corresponding lock holes 36, the first link 68 and the engagement pin 70, which are integrally fixed to the outer side lock plate 38 (o) via the joint pipe 123, as shown in FIG. As shown in the figure, the outer side lock plate is rotated counterclockwise under the biasing force of the lock spring 52 so that the corresponding outer side lock plate first has a play between the engagement pin and the peripheral edge of the interlocking window 72. By a corresponding amount L3, it descends prior to the inner side lock claw 38a (i), and is inserted and engaged in the corresponding lock hole 36.

At this time, the inner side locking claw 38a
If (i) is similarly aligned with the lock hole 36, the inner side and outer side locking means 12 (i) are integrally lowered by the inner side and outer side lock plates 38 (i, o). , o) are locked at the same time (see FIG. 6A).

Here, the position of the lock hole 36 is shifted in the front-rear direction between the inner side and the outer side, and the lock claw 38a (i) on the inner side is locked when the lock claw 38a (o) on the outer side is inserted earlier. If the holes are not aligned, as shown in FIG.
The lowering of (i, o) is stopped at the engagement position between the upper surface of the bottom wall 26a of the guide rail and the lock claw on the inner side. However, in another embodiment of the present invention, the lock claw 38a (o) on the outer side has already been inserted into the lock hole 36 at this time by a length corresponding to the amount L3 that has previously dropped,
Since the seat 16 is engaged, the front-back position of the seat 16 is set to the position.

Then, in this front-back position, the seat 16
If the inner side lock claw 38a (i) is slightly moved back and forth within the play range of the outer side lock claw 38a (o) with respect to the lock hole 36, the inner side lock claw 38a (i) moves An alignment is obtained.
As described above, if the alignment of the lock claw 38a (i) of the inner side with respect to the lock hole 36 is obtained later than the lock claw 38a (o) of the outer side, under the biasing force of the lock spring 52 of each side. Since the lock plates 38 (i, o) on the inner side and the outer side are further lowered at the same time, the locking of the locking means 12 (i, o) on each side is surely performed.

As described above, also in the lock structure of the seat slide device according to another embodiment of the present invention, the locking operation of the outer side preceding the inner side, the locking operation of the inner side following the locking operation, and the outer side Since the further locking operation described above is obtained, the locking reliability of the locking means 12 (i, o) on each side is improved, as in the above-described embodiment. Therefore, the lock hole 36 between the inner side and the outer side
Of the present invention, the workability of the rail body 14 (i, o) can be improved by simplifying the work of mounting the rail body 14 (i, o), and the reliability of the lock without complicating the configuration can be realized by the present invention. The seat slide device 110 according to another embodiment of the present invention can also be secured.

Then, the outer side lock claw 38a (o)
Even in the only preceding lock state, since the lock claw is securely engaged with the lock hole 36 in the amount L3 that has been previously lowered, the half-lock state in which the lock is uncertain is performed according to the embodiment of the present invention. The lock structure of the seat slide device according to another embodiment can also be avoided reliably.

In another embodiment of the present invention, the first link 66 is fixed to the joint pipe 123, and the second link 68 is fixed to the inwardly extending end 44b of the support shaft, respectively. Conversely, the second link to the joint pipe,
The first links may be respectively fixed to the inwardly extending ends of the support shafts. In this case, the interlocking window 72 with respect to the engagement pin 70
By the rotation of the second link 68 with respect to the first link 66 during the movement of the first link 66, the lock claw 38a (i) on the inner side serving as the joint pipe side becomes locked with the lock claw 38a (o) on the outer side serving as the support shaft side. Locked prior to).

In this embodiment, the outer side lock claw 38a (o) is locked prior to the inner side lock claw 38a (i). However, the present invention is not limited to this. The lock claw may be locked prior to the lock claw on the outer side. In this case, in this case, the operation lever 20 is locked by the inner side locking means.
It is provided to be linked to the 12i side.

Although the lock structure of the seat slide device of the present invention is suitable for a seat slide device mounted on an automobile seat, the lock structure is not limited to this, and other seats such as seats for trains, airplanes, ships, etc. The present invention may be applied to a seat slide device mounted on a vehicle.

The embodiments of the present invention described above are intended to explain the present invention, and do not limit the present invention in any way. Modifications, alterations, and the like made within the technical scope of the present invention are also possible. It goes without saying that all are included in the present invention.

[0062]

As described above, according to the lock structure of the seat slide device according to the present invention, the lock claw of one of the inner side and outer side locking means is locked prior to the other, and the Following the lock of the other lock claw and the further lock of one lock claw are obtained, the engagement with this one lock claw is positioned, and the insertion and engagement of the other lock claw from alignment are performed. Easy to secure.

In other words, the allowable range of the displacement of the lock hole between the inner side and the outer side can be widened, and the locking of the locking means on each side can be reliably performed without maintaining high accuracy in mounting the rail body. Therefore, the workability is improved by simplifying the mounting work.

Further, it is sufficient that one lock claw is inserted and engaged with the lock hole prior to the other lock claw without increasing the biasing force of the lock spring. The locking reliability of the locking means on the inner side and the outer side can be improved without complicating the configuration.

Further, in the lock structure of the seat slide device of the present invention, even when only one of the preceding lock claws is in the preceding lock state, this lock claw is securely engaged with the lock hole in the advance amount. Therefore, the half-lock state in which the lock is uncertain can be reliably avoided. Then, even in the preceding lock state of only one of the preceding lock claws, insertion of the other lock claw into the lock hole due to fine movement of the runner back and forth due to vibration or the like during traveling of the vehicle,
Since the engagement is automatically and easily obtained, high safety of the seat slide device can be easily secured.

Further, if the lock claw of the inner side locking means can be inserted and engaged prior to the outer side lock claw, the lock against the traction force from the seat belt connected to the inner side rail body can be provided. Since the strength can be easily secured to the inner side rail body, the safety of the seat slide device can be sufficiently secured from this point as well.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a lock structure of a seat slide device according to an embodiment of the present invention, taken along line AA of FIG.

FIG. 2 is a schematic perspective view of the seat slide device, partially broken away, according to the embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of a partly broken rail body of an outer side in the seat slide device according to the embodiment of the present invention;

FIG. 4 shows a locked state, an unlocked state, and a lock structure of the seat slide device according to the embodiment of the present invention.
It is each operation figure which shows a half lock state.

FIG. 5 is a schematic perspective view of the lock structure of the seat slide device according to another embodiment of the present invention, partially broken away of the seat slide device.

FIG. 6 shows a locked state, an unlocked state, and a lock structure of a seat slide device according to another embodiment of the present invention.
It is each operation figure which shows a half lock state.

[Explanation of symbols]

 10, 110 Seat slide device 12 (i, o) Lock means 14 (i, o) Rail body 16 Seat 18 Floor surface 20 Operation lever 22 Interlocking means 23, 123 Joint pipe 24 Runner 26 Guide rail 36 Lock hole 38 (i, o) o) Lock plate 38a (i, o) Lock pawl 44 Support shaft 46 Rotating arm 52 Lock spring 66 First link 68 Second link 70 Engagement pin 72 Interlocking window

Claims (4)

[Claims] A pair of rails, each of which is provided with a runner fixed to a seat side and slidably mounted on a fixed guide rail on a floor side, is separated from an inner side and an outer side in a width direction of the vehicle. The runner slides with respect to the guide rails of each rail body under the synchronized locking operation of the locking means disposed on each rail body, which is interposed between the seat and the floor surface and can be released by the operation lever. A series of lock holes drilled in the guide rail side; and a lock claw that can be inserted into and engaged with the lock hole, and is integrally formed on the runner side. A lock plate provided so as to be able to move up and down; a lock claw is inserted into a lock hole, and a biasing force in a lock direction to be engaged with the lock claw is applied to the lock plate That the locking spring and; inner side which is formed comprises a,
The locking means of the outer side is operatively connected in synchronization with the interlocking means, and the locking pawl of the locking plate of either the inner side or the outer side is at least engaged with the locking hole. A predetermined amount can be inserted before the lock claw of the other lock plate, and when the other lock claw is inserted into the lock hole, the one lock plate is locked integrally with the other lock plate. A lock structure of the seat slide device, which is further moved in the direction. 2. A pair of rails comprising a runner fixed to the seat side slidably assembled to a fixed guide rail on the floor side, and a pair of rails separated from each other in the width direction of the vehicle. The runner slides with respect to the guide rails of each rail body under the synchronized locking operation of the locking means disposed on each rail body, which is interposed between the seat and the floor surface and can be released by the operation lever. Wherein the lock means has a series of lock holes drilled in the guide rail side; and a lock claw that can be inserted into and engaged with the lock hole at the lower end. And a lock plate provided on the runner side so as to be able to move up and down via a rotating arm; and a lock for inserting and engaging a lock claw into a lock hole. And a lock spring for applying a biasing force to the lock plate in the direction of rotation, and interlocking means serving as a joint pipe fixed at each end to a support shaft provided at a fulcrum of the rotary arm. The lock means on the inner side and the outer side are integrally operably connected to each other, and the lock claw of one of the lock plates on the inner side or the outer side is at least engaged with the lock hole. The lock claw of the other lock plate is formed to be longer than the lock claw of the other lock plate, and can be inserted in advance of the other lock claw by the length corresponding to the length, and when the other lock claw is inserted into the lock hole, A lock structure for a seat slide device, wherein one lock plate is further moved in a locking direction integrally with the other lock plate. 3. A pair of rails comprising a runner fixed to a seat side slidably assembled to a fixed guide rail on a floor side, and a pair of inner and outer side separated positions in a vehicle width direction. The runner slides with respect to the guide rails of each rail body under the synchronized locking operation of the locking means disposed on each rail body, which is interposed between the seat and the floor surface and can be released by the operation lever. Wherein the lock means has a series of lock holes drilled in the guide rail side; and a lock claw that can be inserted into and engaged with the lock hole at the lower end. And a lock plate provided on the runner side so as to be able to move up and down via a rotating arm; and a lock for inserting and engaging a lock claw into a lock hole. And a lock spring for applying a biasing force to the lock plate in the direction of movement of the lock arm, and interlocking means having a joint pipe provided between support shafts provided at the fulcrum of the rotary arm. The locking means of the inner side and the outer side are operatively connected in synchronization with each other, and the support shaft of one of the rotating arms of the inner side and the outer side corresponds to a joint pipe constituting the interlocking means. A first link rotatably inserted into the terminal and having an engaging pin projecting therefrom; a second link having an interlocking window whose periphery is engaged with the engaging pin through a predetermined play And are respectively fixed to the support shaft of the rotatable side and the opposing position of the corresponding end of the joint pipe. Of the inner side and the outer side, the first link side is The lock pawl of the lock plate is provided at least by an amount that can be engaged with the lock hole, which corresponds to a play between the engagement pin and the peripheral edge of the interlocking window, before the lock pawl of the lock plate of the second link side. When the lock pawl of the second link side is inserted into the lock hole, the lock plate of the first link side is
A lock structure for a seat slide device, wherein the lock structure is further moved in a locking direction integrally with a lock plate on a link side. 4. The lock of the seat slide device according to claim 1, wherein the lock claw of the lock plate on the inner side is inserted into and engaged with the corresponding lock hole prior to the lock claw on the outer side. Construction.