JPH10100749A - Seat slide device - Google Patents

Abstract

(57) Abstract: When a lock mechanism is in a locked state and a seat member is positioned with respect to a vehicle body, undesired abnormal noise does not occur, and furthermore, the seat member has a longitudinal direction of the vehicle body. That the side portion of the lower rail member is erroneously damaged by the engaging portion of the lock mechanism when the position is adjusted along the direction. SOLUTION: A cap member 24 is fixed to an outer peripheral portion of an engagement piece 18a of a latch member 18 of a lock / unlock mechanism section 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat slide device for movably supporting a seat member mounted on a vehicle.

[0002]

2. Description of the Related Art Vehicles are generally equipped with a seat slide device for supporting a seat member. The seat slide device is configured such that the position of the seat member can be adjusted along the front-rear direction of the vehicle body. For example, an upper rail member fixed to a lower portion of the seat frame member in the seat member, and an upper rail member on the vehicle body A lower rail member disposed so as to face the upper rail member so as to be movable along the front-rear direction of the vehicle body, and a state in which the upper rail member is selectively fixed to a predetermined position with respect to the lower rail member together with the seat member. And a lock mechanism.

[0003] For example, a plurality of lock mechanisms are provided on the lower rail member along the upper rail member, and a plurality of lock mechanisms are provided on the lower rail member along the upper rail member. And a through hole as an engaged portion.

With this configuration, when the operating lever is operated to disengage the engaging portion with the through-hole and the locking mechanism is unlocked, the vehicle body of the seat member is unlocked. The position is adjusted in the front-rear direction, and thereafter, the operating lever is operated to bring the engaging portion into the engaged state with the through hole, and the lock mechanism is brought into the locked state.
As a result, the seat member is fixed at a predetermined position on the floor portion of the vehicle body.

[0005]

However, when the engaging portion of the lock mechanism is engaged with the through hole provided in the lower rail member to lock the lock mechanism, that is, the operating lever is released. When the engaging portion is connected to the operating lever, the engaging portion is urged by the torsion spring so as to maintain the engaged state with the through hole, so that the engaging portion suddenly collides with the inner peripheral edge of the through hole. At this time, there is a possibility that an undesired abnormal sound is generated and the commercial value is reduced.

When the lock mechanism is unlocked and the position of the seat member is adjusted along the front-rear direction of the vehicle body, the operating lever is accidentally released and the tip of the engaging portion connected to the operating lever is erroneously released. Is moved in a state of contact on the side surface of the lower rail member, and the tip of the engaging portion may damage the rust prevention film on the side surface of the lower rail member.

In view of the above problems, the present invention relates to a seat slide apparatus for movably supporting a seat member mounted on a vehicle, wherein a lock mechanism is in a locked state and positioning of the seat member with respect to a vehicle body is performed. When the adjustment is performed, undesired abnormal noise does not occur, and when the position of the seat member is adjusted along the front-rear direction of the vehicle body, the side portion of the lower rail member is erroneously set by the engagement portion of the lock mechanism. An object of the present invention is to provide a seat slide device that can avoid being damaged.

[0008]

In order to achieve the above object, a seat slide device according to the present invention comprises an upper rail member fixed to a seat frame member and a base arranged opposite to the seat frame member. A lower rail member arranged to movably support the upper rail member, an engaged portion provided on the lower rail member, and an engageable portion provided on the upper rail member to be selectively engageable with the engaged portion. An engagement piece for fixing the upper rail member to the lower rail member when engaged with the portion, and a coating layer is formed on an outer peripheral portion of the engagement piece.

Further, the engaged portion provided on the lower rail member may be a through hole, and a tip formed by a coating layer on the engaging piece may be formed in a tapered shape. The coating layer may be formed at the tip of the outer peripheral portion of the engaging piece protruding from the engaged portion.

[0010] Further, the coating layer may be formed of a buffer material.

[0011]

FIG. 2 shows an example of a seat slide device according to the present invention, together with a part of a vehicle body of a vehicle equipped with the same and a frame of a seat member.

FIG. 2 shows a seat slide device for supporting one side portion of a frame member 2 forming a frame of a seat cushion of a seat member for a passenger seat, for example. The other side portion of the frame member 2 is supported by a seat slide device (not shown) which is disposed opposite to the seat slide device shown in FIG. The seat slide device not shown has the same structure as the example shown in FIG. 2 except for a lock mechanism described later.

In the example shown in FIG. 2, a pair of bracket members 6 (FIG.
In the figure, only the front side of the vehicle body 4 is shown, and the rear side is not shown). The lower rail member 8 whose both ends are supported via the vehicle body 4 and the lower rail member 8 and the frame member 2 Arranged, frame member 2
The upper rail member 10 fixed to the lower rail member 8 and supported by the lower rail member 8 so as to be movable in the front-rear direction of the vehicle body 4, and the upper rail member 10 and the frame member 2 provided on the upper rail member 10 are attached to the lower rail member 8. And a lock / unlock mechanism 12 for selectively locking or unlocking a predetermined position.

The lower rail member 8, which is made of a thin steel plate and has a substantially rectangular cross section, has a flange portion 8a for supporting the upper rail member 10 via a rolling member (not shown).
Are bent from both sides of the groove 8b.

Upper rail member 10 made of thin steel plate
Has a bent portion 10a slidably in contact with the flange portion 8a of the lower rail member 8, and a flat mounting surface portion 10b connected to the bent portion 10a and fixed to the frame member 2. The mounting surface portion 10b is provided with three mounting through holes 10c at predetermined intervals.

The lock / unlock mechanism 12 includes an operation lever 16 rotatably supported by a rotation support portion 14a of a bracket member 14 connected to the mounting surface portion 10b of the upper rail member 10, and an operation lever 16 of the operation lever 16. A latch member 18 fixed to a portion between the rotation support portions 14a;
A lock plate 20 having a plurality of through-holes 20 a as an engaged portion which is fixed to a lower end surface of the lower rail member 8 and an engagement portion of the latch member 18 is selectively engaged with as a main component. Have been.

One end of the operation lever 16 is fitted to the rotation support portion 14a of the bracket member 14 and is rotatably supported. One end of the operation lever 16 protruding from the rotation support portion 14a has one end.
6, a torsion coil spring 22 is provided. The torsion coil spring 22 is connected to the latch member 1.
The operation lever 16 is urged in a direction indicated by an arrow Lo shown in FIG. 2 to hold the operation lever 8 in a state of being engaged with the through hole 20a (locked state).

The lock plate 20 is made of, for example, a thin steel plate, and has a bent surface portion 20b arranged along the upper rail member 10 so as to face the bent portion 10a of the upper rail member 10 at a predetermined interval. I have. A plurality of through-holes 20a as engaged portions are formed at predetermined intervals in the bent surface portion 20b.

As shown in FIGS. 1A and 1B, the latch member 18 which is selectively engaged with each through hole 20a has an engagement piece 18a at the tip thereof. Engaging piece 1
8a is formed such that the tip is tapered. Also,
A cap member 24 that forms a coating layer made of a resin material as a buffer material, for example, nylon, is tapered and fixed to a distal end portion of the outer peripheral portion of the engagement piece 18a. The cap member 24 is engaged with the through-hole 18b of the engaging piece 18a so that the engaging piece 18
a.

As a result, the engaging piece 18a is
Are selectively engaged with the through holes 20a via the cap member 24, so that the engagement pieces 1
When 8a is steeply engaged, the generation of undesired abnormal noise is avoided. Further, since the cap member 24 made of resin is formed in a tapered shape, the cap member 24 is smoothly engaged with each through hole 20a.

With this configuration, when adjusting the position of the seat member, first, the operation lever 16 is opposed to the biasing force of the torsion coil spring 22 in the direction opposite to the direction indicated by the arrow Lo shown in FIG. When rotated, as shown in FIGS. 3 and 4, the engagement pieces 18a are separated from the respective through holes 20a and are brought into an unlocked state (unengaged state).

Next, the position adjustment of the upper rail member 10 is performed with the frame member 2 along the directions of the arrows shown in FIGS. At this time, as shown in FIG. 5, the operating lever 16 is erroneously released and the upper rail member is in a state in which the engaging piece 18a is in contact with the bent surface portion 20b of the lock plate 20 by the urging force of the torsion coil spring 22. Even when 10 is moved, since the cap member 24 comes into contact with the curved surface portion 20b, the engaging piece 18a directly damages the curved surface portion 20b, for example,
There is no possibility that the scar IL shown by the alternate long and short dash line in FIG. 4 is formed.

Then, the position is adjusted and the engagement piece 18a is adjusted.
Is at a predetermined position facing each through hole 20a, the operation lever 16 is rotated in the direction indicated by the arrow Lo shown in FIG. 2, and as shown by solid lines in FIGS. 1 (A) and 1 (B), First, the tip end of the engagement piece 18a is engaged with the through hole 20 via the cap member 24, and then, as shown by a two-dot chain line in FIGS.
Is made of resin, so that the cap member 24 and the through hole 20 are formed.
a, the friction between the cap member 24
The engagement piece 18a is further guided by the inner peripheral portion of the through hole 20a, and the base end of the engagement piece 18a is locked in the through hole 20a, so that the position adjustment of the sheet member is completed.

Therefore, the operation lever 16 is accidentally released, and the engagement piece 18a of the latch member 18 is sharply engaged with each through hole 20a by the urging force of the torsion coil spring 22. Also, the generation of an undesired impact sound is avoided by the cap member 24. Further, the lock / unlock mechanism 12 can be improved by attaching the cap member 24 to the engagement piece 18a of the latch member 18 without significant design change.

In the above-described example, the cap member 24 is made of a resin material. However, the cap member 24 is not necessarily required to be made in this way. For example, the cap member 24 is formed of a rubber material as a cushioning material. Alternatively, a rubber material may be fixed to the outer peripheral portion of the engagement piece 18a by baking.

[0026]

As is apparent from the above description, according to the seat slide device of the present invention, the engagement for selectively fixing the upper rail member fixed to the seat frame member to the lower rail member. Since the covering layer is formed on the outer peripheral portion of the piece, when the seat member is positioned with respect to the vehicle body, undesired abnormal noise does not occur, and
When the position of the seat member is adjusted along the front-rear direction of the vehicle body, it is possible to prevent the side surface of the lower rail member from being erroneously damaged by the engaging portion of the lock mechanism.

In the case where the engaged portion provided on the lower rail member is a through hole, and the tip formed by the coating layer on the engaging piece is formed in a tapered shape, the engaging piece is smoothly inserted into the through hole. Has the advantage of being able to engage with

[Brief description of the drawings]

1A is a plan view partially showing a main part of an example of a seat slide device according to the present invention, and FIG. 1B is a side view in the example shown in FIG.

FIG. 2 is a perspective view showing a main part of an example of a seat slide device according to the present invention, together with a vehicle body of a vehicle equipped with the seat slide device.

FIG. 3 is a diagram provided for describing the operation of an example of the seat slide device according to the present invention.

FIG. 4 is a diagram provided for describing an operation of an example of the seat slide device according to the present invention.

FIG. 5 is a diagram provided to explain an operation of an example of the seat slide device according to the present invention.

[Explanation of symbols]

 2 Frame member 4 Body 8 Lower rail member 10 Upper rail member 12 Lock / unlock mechanism 18 Latch member 18a Engagement piece 20 Lock plate 20a Through hole 24 Cap member

Claims (4)

[Claims] An upper rail member fixed to a seat frame member; a lower rail member disposed on a base arranged to face the seat frame member and movably supporting the upper rail member; An engaged portion provided, the upper rail member being provided on the upper rail member to be selectively engageable with the engaged portion, and being engaged with the engaged portion, the upper relative to the lower rail member. An engaging piece for fixing a rail member, wherein a coating layer is formed on an outer peripheral portion of the engaging piece. 2. The engaging portion provided on the lower rail member is a through hole, and a tip formed by a coating layer on the engaging piece is formed to have a tapered shape. Seat slide device. 3. The seat slide device according to claim 1, wherein the covering layer is formed at a distal end of an outer peripheral portion of the engaging piece protruding from the engaged portion. 4. The seat slide device according to claim 1, wherein the cover layer is formed of a buffer material.