JP3305494B2 - Seat adjuster - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjuster for moving and adjusting a vehicle seat, and more particularly to an adjuster for interlocking with a separately provided reclining device in addition to a seat position adjusting function within a normal adjusting range. The present invention relates to a seat adjuster device having a function of adjusting and moving a sheet to a position beyond a normal adjustment range by means.

[0002]

2. Description of the Related Art In a conventional seat adjuster, a lock mechanism is provided on each of a left and right seat rails for improving safety, and a normal operation lever attached to one of the seat rails is operated by the seat. In general, the rail-side lock mechanism is operated and transmitted to the other seat rail-side lock mechanism via the first pull wire at the same time. Also known is a seat adjuster that allows the seat to move beyond the normal adjustment range in order to make the seat cushion and the seat back fully flat, and in this type of device, a separately provided reclining device is provided. Is connected to the lock mechanism of the seat rail on the side where the normal operation lever is not attached, and the second lock mechanism is operated simultaneously with the operation of the connected side by the operation of the operation means. Is known which is transmitted to a lock mechanism on the other seat rail side via the pull wire of the above.

In the seat adjuster having the above structure, the amount of operation of the lock mechanism by the normal operation lever and the operation means provided separately is set differently, so that normal movement adjustment and normal movement of the seat are performed. Operations beyond the adjustment range are selectively performed.

[0004]

In the above-mentioned conventional seat adjuster, the first and second two pull wires are required, the number of components is increased, and an erroneous assembling in which the engagement position of each pull wire is erroneous is caused. There were drawbacks that were likely to occur. In addition, it has a unique structure in which the normal operation lever and separately provided operation means are attached or connected to the left and right seat rails, respectively, and the parts are shared with those of the seat adjuster device without this kind of function Was difficult to measure.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned drawbacks and difficulties of the prior art, the present invention integrates a normal operation lever and a separately provided operation means on one seat rail side to form a shaft portion of the operation lever. A pull wire connected to a lock mechanism on the other seat rail side, and an operating means separately provided on a mechanism portion comprising a first link rotatably slidably mounted on a shaft and a second link fixed to a shaft portion of the operation lever; Are connected to each other.

[0006]

The operation lever 6 for adjusting the seat of the present invention.
The operation of will be described.

First, when adjusting a normal seat, the operating lever 6 is in the position shown in FIG. 2 and is in the locked position in which the locking claw pieces 8 and 12 are both engaged with the locking plates 10 and 11.
Then, in order to perform the adjustment movement from the lock position, the operation lever 6 is operated, and the second link 1 fixed to the operation lever 6 is operated.
9, when the first link 17 is moved in the range of the angle A by the locking portion 19a, the pull wire 16 connected to the first link 17 operates the first link 17 by the operation amount of the operation lever 6, and this operation engages. The pawl pieces 8 and 12 release the lock of the locking plates 11 and 10. In this case, since the amount of tension is small, the locking claw piece 12 operates only in the range of the B angle on the upper rail 2a side. The sheet cannot be moved (see FIGS. 1 and 3).

Next, in the full flat sheet shown in FIG. 5, as described above, the sheet can normally move only to the stopper portion 11a and the back sheet interferes with the rear sheet (see FIG. 5A). Need to move to. Then, when the reclining is moved forward and the walk-in operation is performed, the operation piece 1 is connected via the walk-in cable 18.
7a is pulled, and accordingly, the first link 17 integrated with the operation piece 17a moves to the C-angle range while the operation lever 6 is kept as it is. By this operation, the locking claw 8 is released from the locking plate 10, and the first link 17 is largely operated, so that the operating angle of the locking claw 12 via the pull wire 16 connected to the first link 17. Is greatly actuated, whereby the locking claw piece 12 can get over the stopper portion 11a, and the sliding amount of the sheet moves forward to N to enable full flat (see FIGS. 4 and 5B).
That is, by changing the operation amount, the seat can be adjusted and moved to a position beyond the normal seat adjustment range to enable full flat (see FIG. 5C).

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a seat adjuster according to the present invention, which will be described below with reference to the drawings.

Numerals 1 and 1a denote lower rails which are arranged parallel to the floor of an automobile at intervals and are fixed to the lower rails 1 and 1a.
a is provided so as to be movable back and forth, and each constitutes a seat rail.

The upper rail 2 of one of the seat rails is provided with a pair of vertical mounting portions 3 overlapped with each other. Annular portions 4a and 5a are provided on the inner surface side of the mounting portion 3 so that the operation lever 6 can be pivoted. The shaft support pieces 4 and 5 are mounted on the operation lever 6 with one end fitted in a notch 7 provided in the ring portion 5a of one of the shaft support pieces 5, and rotation is transmitted by the operation lever 6. Locking claw pieces 8 are provided. Operation lever 6
A spring 9 for returning the operation lever 6 when the operation lever 6 is released from the hand is provided on the distal end of the lower rail 1. A locking claw 8 having one end attached to the operation lever 6 is provided on the lower rail 1 side. The upper rail 2 can be adjusted to a desired position by acting in the direction of engagement of the plate 10 (this is conventionally known).

A reclining support plate 20 is mounted on the rear side of the outer surface of the mounting portion 3 of the upper rail 2.

Further, on one side of the upper rail 2a of the other seat rail, one end of a locking claw piece 12 for engaging and disengaging from an uneven locking plate 11 attached to the lower rail 1a is provided on a side wall facing the one upper rail 2. Bearing piece 1 of attached shaft 13
4 and a locking claw piece 12 is fixed to the shaft 13 by a locking plate 11.
A spring 15 for biasing in the direction is provided.

Furthermore, a first link 17 is slidably fitted on the operating lever 6 on the one upper rail 2 side so as to be freely rotatable, and a tip of the first link 17 is attached to the other upper rail 2a side. The other end of the pull wire 16 connected to the lower end portion of the locking claw piece 12 is bound, and furthermore, the first link 17 is provided with an operation piece 17a integrally projecting from the sliding fitting portion. The operation piece 17a is connected to one end of a walk-in cable 18 that has passed through reclining.

The first link 17 is provided with a locking portion 19a.
The movement of the operation lever 6 in the axial direction is restricted by the second link 19 fixed to the operation lever 6 with the first lever 17. In this case, the operation of the operation lever 6 is performed by an amount corresponding to the operation amount, and the locking of the locking claw pieces 8 and 12 from the locking plates 10 and 11 can be released. However, the first link 1
7 is small in the normal operation, the locking claw piece 12 on the upper rail 2a side is connected to the stopper portion 1 of the locking plate 11.
You cannot get over 1a.

[0016]

According to the present invention, since the single pull wire is used as described above, erroneous assembly can be prevented, the handling of the pull wire can be rationalized, and the first link slidably fitted on the operating lever shaft can be used. A second link with a locking part that controls the lateral movement of one link is provided, and an operation piece linked to the reclining is provided on the first link so that the operation amount can be changed to enable full flat. There is an effect that can be done.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a seat adjuster device according to the present invention.

FIG. 2 is an operation diagram of the seat adjuster device, and is a front view of the seat adjuster device when the locking claw is engaged with the locking plate and locked.

FIG. 3 is a front view of a normal lever operation in which a locking claw piece is disengaged from a locking plate and a sheet can be adjusted and moved.

FIG. 4 is a front view of a state in which a locking claw rides over a stopper portion of a locking plate by a walk-in cable before reclining before reclining, thereby enabling a seat to move beyond a normal adjustment movement range.

FIG. 5 is a full flat seat operation diagram.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Lower rail 2, 2a Upper rail 3 Attachment part 4, 5 Shaft support piece 4a, 5a Annular part 6 Operating lever 7 Notch part 8, 12 Locking claw piece 9, 15 Spring 10, 11 Locking plate 11a Stopper part 13 Mounting shaft 14 Bearing 16 Pull wire 17 First link 17a Operation piece 18 Walk-in cable 19 Second link 19a Locking portion 20 Support plate

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60N 2/06 B60N 2/22

Claims (1)

(57) [Claims] 1. An operation in which a pair of seat rails comprising a lower rail and an upper rail are arranged in parallel on a floor surface at an interval, and one of the seat rails is pivotally supported by either the lower rail or the upper rail. A locking claw that rotates with the lever shaft and a locking plate that meshes with the locking claw are provided. On the other hand, the locking claw is supported on the seat rail while supporting the shaft of the locking claw. In the seat adjuster, a locking plate is provided which meshes with the operating lever and the locking claw piece so that the upper rail can be moved and fixed at the adjustment position by operating the operating lever. The distal end side of the first link rotatably slidably fitted to the operation lever shaft is connected to a locking claw piece of the other seat rail by a pull wire, and the first link is a locking portion fixed to the operation lever shaft. With Lateral movement is restricted by the second link, and the locking portion and the first link are provided so as to be able to collide with each other, and the first link has an operation interlocked with the forward movement of the reclining device. When the cable connected to the means is connected and pulled by the cable, the cable rotates together with the first link to release the engagement between the locking claws and the locking pieces of the seat rails, and A seat adjuster comprising an operating portion for operating the locking claw piece of the other seat rail so large that the locking claw piece can get over the stopper portion of the locking piece which cannot be climbed by normal operation.