JPH10309965A - Slide lock device for seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the degree of freedom of a layout of devices and the like adjoining a seat slide device by incorporating a lock mechanism into the slide device compactly. SOLUTION: A lower channel 7 is formed on its raised parts 7c with locking projections 7i, and an upper channel 8 is internally mounted vertically swingably a locking plate 17 formed with locking holes 17d by means of a support shaft 16. The plate 17 is held swingable upward or downward to its unlocking position or locking position by the external operation of locking levers 20 and 21 arranged thereon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat slide lock device in which a lock mechanism can be compactly incorporated in a slide device to improve the degree of freedom of layout of other adjacent devices.

[0002]

2. Description of the Related Art Conventionally, as a slide device for a seat, for example, a seat for an automobile, as shown in FIG. 7, an upper channel 2 attached to a seat member is fitted to a lower channel 1 attached to a floor member. One in which the seat member is slid forward and backward has been proposed (see Japanese Utility Model Laid-Open No. 4-48034).

The lock plate 4 of the lower channel 1 of the slide device is provided with lock grooves 4a,.
A lock lever 3 having a lock claw 3a is attached to the outside of the lock member 3 so that the lock lever 3
A slide lock device that locks the sheet member by engaging the lock claw 3a with the lock groove 4a is provided.

[0004]

However, in the above-mentioned conventional slide lock device, since the lock lever 3 and the lock plate 4 are attached to the outside of both the channels 1 and 2, the foot of the occupant in the rear seat is put in. There is a problem that the space is limited and the degree of freedom of layout of other adjacent devices (for example, a tilt device, a lifter, etc.) and a sheet member is limited. There is also a problem that the number of parts is large, the cost is high, and the weight is large.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. A lock mechanism can be compactly incorporated in a slide device, so that the degree of freedom in layout of other adjacent devices can be improved and the cost can be reduced. It is an object of the present invention to provide a simple seat slide lock device.

[0006]

In order to solve the above-mentioned problems, the present invention provides a seat in which an upper channel attached to a seat member is fitted to a lower channel attached to a floor member, and the seat member is slid forward and backward. In the slide device, a saw-toothed lock convex portion is formed at a predetermined pitch in a length direction on a lower end edge of a falling portion of the lower channel, and one end portion of the lower channel is vertically swung by a support shaft in the upper channel. A lock plate which is movably mounted and has a lock hole formed on the other side of the side protrusion at a predetermined slide position so as to be engageable from below with a lock projection of the lower channel, is provided at an upper portion of the lock plate. A lock lever is provided extending through the upper hole of the upper channel and extending outward. By vertically swung rate, and a lock position where the lock holes are engaged with the locking protrusion,
It is an object of the present invention to provide a seat slide lock device characterized in that the lock hole can be switched to an unlock position where the lock hole does not engage with the lock projection.

According to the present invention, the lock plate mounted in the upper channel is vertically swung by an external operation of the lock lever, so that the lock hole of the lock plate is inserted into the lock projection of the lower channel at a predetermined slide position. When engaged, the seat becomes locked. The lock plate does not protrude outside because it is incorporated in the upper channel.

According to a second aspect of the present invention, when a spring is wound around the support shaft and the lock plate is urged to the lock position by the spring, the spring can also be incorporated in the upper channel.

[0010] As described in claim 3, the lower end of the lock plate is provided so as to prevent the other end of the lock plate from coming into contact with the lower channel when the lock plate is pivoted down to the unlock position. With the configuration in which the stopper portion that regulates the swing is formed, the other end of the lock plate that has been operated to swing downward does not come into contact with the lower channel.

According to a fourth aspect of the present invention, a lock projection is formed on each of the lower edges of the falling portions on both sides of the lower channel, and a lock on both sides of the lower channel is formed on both sides of the lock plate. With the configuration in which the lock holes that can be engaged with the projections are formed, the upper channel can be locked on both sides of the lower channel.

According to a fifth aspect of the present invention, at least one of both sides of the upper channel and both sides of the lock plate is provided with a convex portion for regulating the position of the lock plate in the left-right direction. Up and down swing operation becomes smooth.

[0012]

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

As shown in FIG. 1, FIG. 5, and FIG. 6, an automobile seat sliding device comprises an upper seat attached to a seat cushion of a lower channel 7 attached to a floor panel by front and rear legs 6,6. The seat is slid forward and backward by fitting the channel 8.

As shown in detail in FIG. 2A, the lower channel 7 has a flat bottom 7a and a bottom 7a.
Rising portions 7b, 7b rising from both side ends of the lower ball 9 while forming curved surfaces substantially corresponding to the outer spherical surface of the lower ball 9.
From the upper ends of the rising portions 7b, 7b.
Are formed with falling portions 7c, 7c which fall inward in a substantially inverted U-shape while forming a bent surface substantially matching the outer peripheral surface and both outer end surfaces.

The upper channel 8 has a flat upper portion 8a and falling portions 8b which fall from both side ends of the upper portion 8a to the outer surfaces of both rising portions 7b, 7b of the lower channel 7 and fall inward. , 8b, and rising portions 8c, 8c rising outward in a substantially U-shape between the rising portions 7b and the falling portions 7c on the respective sides of the lower channel 7 from the lower ends of the falling portions 8b, 8b. Have been.

The outer surface of the corner of each of the falling portions 8b is formed into a curved surface substantially matching the outer spherical surface of the lower ball 9, and the upper end of each of the rising portions 8c has a length as shown in FIG. 8d long groove in the front-back direction
Are formed respectively.

The bottom 7a of the lower channel 7 and the inner surfaces (curved surfaces) of the corners of the rising portions 7b, 7b,
Lower balls 9 are interposed between the rising portions 8c of the upper channel 8 and the outer surfaces of the corners of the respective rising portions 8c.
The corner inner surface portion and the corner outer surface portion may be formed on an inclined surface.

An upper roller 10 is provided between the lower end of the concave groove 8d of the rising portion 8c of the upper channel 8 and the inner bottom surface between the rising portion 7b and the falling portion 7c of the lower channel 7. Intervene.

The upper roller 10 and the lower ball 9 have one upper roller 10 for each groove 8d of the upper channel 8.
The lower roller 9 is disposed two by two, and the upper roller 10 is held in the upper notch at an intermediate position in the longitudinal direction of the retainer 11 having a substantially C-shaped cross section. Balls 9, 9 are held respectively.

The inner bottom surface between the rising portion 7b and the falling portion 7c of the lower channel 7 corresponding to each groove 8d of the upper channel 8 has an outer peripheral surface of the upper roller 10 at a front and rear rolling position. A front stopper projection 7g and a rear stopper section 7h are formed to contact the front end 8g or the rear end 8h of the concave groove 8d.
When the upper roller 10 is caught between the upper channel g and 7h, the sliding of the upper channel 8 is stopped (stopped).

On the other hand, as the lock mechanism 19, the lower edge of one falling portion (right side in FIG. 1) 7c of the lower channel 7 has a saw-toothed lock convex portion 7i at a predetermined pitch in the length direction. To form Note that, as shown in FIG. 4B, lock projections 7j,... May be formed on the lower edge of the other falling portion (left side in FIG. 1) 7c of the lower channel 7.

At a substantially middle position in the length direction of the upper channel 8, a lock plate 17 having a substantially inverted U-shaped cross section is disposed between the both falling portions 8b, 8b, and is shown in detail in FIG. As shown in FIG.
a are provided with through holes 17b, 17b, and a rear protruding portion 17c is provided with a lock hole 17d which can be engaged from below with a lock convex portion 7i of one falling portion 7c of the lower channel 7. Are formed.

As shown in FIG. 3, the lock plate 1
7 also has a side protruding portion 17e on the opposite side of the side protruding portion 17c,
A lock hole 17f that can be engaged from below with the lock projection 7j of the other falling portion 7c of the lower channel 7 may be formed in the side protrusion 17e.

The through holes 17b of the lock plate 17
Falling portion 8 of upper channel 8 corresponding to 17b
The through holes 8i, 8i are also provided in the b, 8b, and the inner surface side of each of the through holes 8i, 8i has a distal end portion 1 of the lock plate 17 whose outer width is smaller than the inner width of the falling portions 8b, 8b.
Projections 8j, 8 into which both outer surfaces of 7a can fit without play
j.

Further, on the rear end side of the lock plate 17,
Protrusions 17g, 17g that can be fitted into the inner surfaces of the falling portions 8b, 8b without play are formed.

In each of the through holes 8i and 17b, a support shaft 16 is penetrated and fixed by caulking, and the lock plate 17 is supported by the support shaft 16 so as to be vertically swingable. A lock spring 18 is wound around the support shaft 16, and the lock spring 1
8, the lock plate 17 is urged in the lock direction in which the lock hole 17d is engaged with the lock projection 7i of the lower channel 7.

At the upper end of at least one of the upright walls 17h of the tip 17a of the lock plate 17, FIG.
When the lock plate 17 is moved down to the unlock position as shown in FIG.
A stopper 17j is formed to restrict downward swing so that the lower part 7 does not contact the inner surface of the bottom 7a of the lower channel 7.

A rear portion 20a of the lever 20 is fixed to the upper inner surface of the lock plate 17, and the lever 20 is bent upward, sideways, and forward sequentially from the rear portion 20a. 8k, a pipe-shaped lock lever 21 rear portion 21a extending to the front lower side of the seat is fitted into an external front facing front portion 20b, and a C-ring 22 (FIG. 1).
See).

With the above-described slide lock device, when the seat occupant of the seat swings the lock lever 21 upward against the urging force of the lock spring 18, the lock plate 17 swings downward. Since the lock hole 17d of the side protrusion 17c comes off from the lock protrusion 7i of the lower channel 7, the seat can be slid forward and backward in this unlocked state.

When the occupant releases his / her hand from the lock lever 21 at an appropriate forward / backward slide position of the seat, the lock plate 17 is pivoted upward by the urging force of the lock spring 18, and the side protruding portion 17c of the lock plate 17 is moved. Since the lock plate hole 17d is engaged with the lock projection 7i of the lower channel 7 from below, the seat is locked at the sliding position.

In the above configuration, most of the lock mechanism 19 such as the lock plate 17 and the lock spring 18 is compactly incorporated in the upper channel 8 and does not protrude to the outside, so that a space for a passenger seated in the rear seat can be provided. No longer restricted.

Further, the lock mechanism 19 basically includes:
Since it can be composed of the support shaft 16, the lock plate 17, the lock spring 18, and the like, the number of parts is small, the cost is low, and the weight is reduced.

Further, since the other end portion 17i of the stopper portion 17j of the lock plate 17 does not come into contact with the inner surface of the bottom portion 7a of the lower channel 7, the "dragging" phenomenon caused by sliding the upper channel 8 can be reliably prevented.

Further, both falling portions 7 of the lower channel 7
If the lock projections 7i and 7j are formed on c and 7c, respectively, and the lock holes 17d and 17f are formed on both sides 17c and 17e of the lock plate 17, the upper channel 8 can be locked on both sides of the lower channel 7. Therefore, the strength in the front-rear direction can be further increased.

Further, the projections 8j, 8j are formed on the falling portions 8b, 8b of the upper channel 8, and the projections 17g, 17g are formed on both sides of the lock plate 17, so that the right and left sides of the lock plate 17 are formed. The position is regulated in the direction, the vertical swing operation of the lock plate 17 becomes smooth, and the lock plate 17 itself does not rattle.

[0036]

As is apparent from the above description, in the slide lock device of the present invention, the lock plate is compactly incorporated in the upper channel and does not protrude to the outside, so that a space for the rear seated person to enter the foot is provided. Is not limited, and the degree of freedom of layout of other adjacent devices is not limited. Further, the number of parts is reduced, the cost is reduced, and the weight is reduced.

Further, when the stopper portion is formed on the lock plate, the other end of the lock plate that has been operated to swing downward does not contact the lower channel.
The "dragging" phenomenon can be prevented beforehand.

Furthermore, if the lock projections are formed on both sides of the lower channel and the lock holes are formed on both sides of the lock plate, the strength in the front-rear direction can be further increased.

Further, when convex portions for restricting the position of the lock plate in the left-right direction are formed on both sides of the upper channel and the lock plate, the up-down swing operation of the lock plate becomes smooth. Also, the lock plate does not rattle.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a slide lock device according to the present invention.

2A is a sectional view taken along line CC of FIG. 5, FIG. 2B is a sectional view taken along line DD of FIG. 5, FIG. 2C is a sectional view taken along line EE of FIG.

FIG. 3 is a lock plate, (A) is a plan view,
(B) is a side view, and (C) is a side view incorporated in the upper channel.

4A is a perspective view of a lock plate, and FIG. 4B is a perspective view of both channels.

FIG. 5 is a slide device, (A) is a plan view,
(B) is a side view.

FIG. 6 is a rear view of the slide device.

FIG. 7 is a sectional view of a conventional slide lock device.

[Explanation of symbols]

 7 Lower channel 7c Falling part 7i, 7j Lock convex part 8 Upper channel 8i Through hole 8k Upper hole 16 Support shaft 17 Lock plate 17c, 17e Side projecting part 17d, 17f Lock hole 17g Projecting part 17j Stopper part 18 Lock spring 19 Lock Mechanism 20 Lever 21 Lock lever

Claims (5)

[Claims] 1. A seat sliding device for fitting an upper channel attached to a seat member to a lower channel attached to a floor member and sliding the seat member back and forth, wherein a lower end edge of a falling portion of the lower channel is provided. , While forming a saw-tooth-shaped lock convex portion at a predetermined pitch in the length direction,
In the upper channel, one end portion is attached to the support shaft so as to freely swing up and down, and a lock hole which can be engaged with a lock projection of the lower channel at a predetermined slide position from below at a side protrusion portion on the other end side. A formed lock plate is provided, and a lock lever extending outward through an upper hole of the upper channel is provided at an upper portion of the lock plate, and the lock plate is vertically swung by an external operation of the lock lever. A slide lock device for a seat, wherein the lock position is switched between a lock position where the lock hole engages with the lock protrusion and an unlock position where the lock hole does not engage with the lock protrusion by operation. 2. The seat slide lock device according to claim 1, wherein a spring is wound around the support shaft, and the lock plate is urged to the lock position by the spring. 3. When the lock plate is pivoted downward to an unlock position at one end of the lock plate,
3. The slide lock device for a seat according to claim 1, wherein a stopper portion for restricting downward swing is formed so that the other end portion of the lock plate does not contact the lower channel. 4. A lock projection is formed at a lower end edge of a falling portion on both sides of the lower channel, and is engaged with a lock projection on both sides of the lower channel at a side projection on both sides of the lock plate. The seat slide lock device according to any one of claims 1 to 3, wherein each of the lock holes is formed. 5. The projection according to claim 1, wherein at least one of both sides of said upper channel and both sides of said lock plate is provided with a convex portion for regulating the position of said lock plate in the left-right direction. Seat slide lock device.