JPS61278442A - Seat adjuster for car seat - Google Patents

Abstract

PURPOSE:To prevent a linking wire from a lock release owing to a careless pulling of a lock plate, by operating an inertia wire-releasing plate in case of a car collision, so as to remove the linking wire for lock releasing from the lock plate. CONSTITUTION:An inertia wire-releasing plate 23 is usually put upon a hook 18b of a hook plate 18, with its gearing groove 23, together with the hook 18a, formed into an inserting hole for a linking wire 21, and the linking wire 21 is linked to the lock plate 18. As a result, a locking pawl 18a of the lock plate 18 is inserted, for example, in a gearing hole 15 of a gearing plate 14 and in a gearing hole 16 of an upper rail 13, and the upper rail 13 is locked, for example, to a lower rail 12. In this case, if a specific inertia force is produced at the side plate 23 by a car collision, the said plate 23 is rotated forward against a spring 25, and the gearing groove 23a at the tip removes a looping end 21a of the linking wire 21 from the hook 18b.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a seat adjuster for a vehicle seat.

This allows the slide rail to remain locked even in the event of a vehicle collision.

[Traditional sister technique]

Most vehicle seats, especially the front seats including the driver's seat, are equipped with a ninth seat adjuster that fully adjusts the front and rear positions. The seat is configured by providing a locking mechanism on a slide rail consisting of a fixed Atsuno Cool rail, and the seat is slid back and forth on the floor via the slide rail, and when the slide rail is locked by the locking mechanism at the desired position, the seat moves forward and backward from K. It is configured so that its position can be adjusted. This slide rail is biased symmetrically to the bottom side of the seat cushion, and in the case of single-person seats, the distance between the left and right slide rails is narrow, so the seat can be fixed simply by locking one slide rail, so most On the other hand, a locking mechanism is provided only on the slide rail, but in the case of a bench-type seat that can be hung by multiple people, the distance between the left and right slide rails is wide, so locking only one slide rail will prevent the seat from moving in the front and rear directions. Both slide rails are provided with locking mechanisms because they tend to twist when a load is applied, making complete fixation impossible.

In other words, this seat adjuster with locks on both sides adjusts the locking mechanism of the slide rail quickly.

Since it is necessary to operate them simultaneously for ease of use, the locking mechanism (2a) of one slide rail (1a) has a locking plate (3a) and an operating handle (4) for operating it, as shown in Fig. 4. (The lock mechanism (2b) of the other slide rail (1b) is a lock play) (The lock mechanism (2b) of the other slide rail (1b) is a lock play)
(3b)' is connected to the operating knob (4) via an interlocking member so that both locking grates (3m) (3b) can be operated simultaneously by operating one operating knob (4). K has been done. As this interlocking member, a wire (5) that is thin and has high tensile strength is used in order to be placed in a narrow space on the lower surface side of the seat cushion Sc and to reduce the load on the lock plate and operation handle. Oh, this interlocking wire (5)
has a length extending between the slide rails (1a) and (1b), and its intermediate portion is supported by a guide member (6)K provided on the lower surface side of the seat cushion Sc or on the floor F side.

[Problem that the invention seeks to solve]

The locking mechanism of the seat adjuster configured in this way is operated by operating the operating handle (4) on one slide rail (1a).
), the lock plate (3&) is directly unlocked, and the other slide rail (1b) is unlocked indirectly through the interlocking wire (5), and This unlocking operation is performed at the same time, but during car crash tests, when the car floor, seat, etc. are deformed due to the impact of the car colliding with an obstacle, the interlocking wire (5) supported by the car may be inadvertently damaged. A lock plate (3b
) is operated and the lock to the slide rail (lb) K is released, which causes the seat to move and deform even more, posing a safety problem.

In view of the above, the present invention provides a vehicle seat that is provided with a mechanism that operates to maintain the locking state of a locking member with respect to a slide rail of a seat adjuster even when a shock is applied to the seat due to a collision of a vehicle body, and is intended to improve safety. The purpose is to provide a seat adjuster for.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a seat adjuster for a vehicle seat in which a lock plate that locks a lower rail and an upper rail of a slide rail is rotated via an interlocking wire by an operation handle to release the lock. In this method, a connecting part is provided on the lock grate to hook the interlocking wire, and an inertia wire release grate is installed corresponding to this connecting part, and the inertia wire release plate is actuated by the action of acceleration caused by the collision of the vehicle body to release the interlocking wire. It is configured to move the lock plate from a predetermined connection position and prevent transmission of tensile force to the lock plate.

[Effect]

With this configuration, the inertia wire release plate connects and holds the interlocking wire to the lock plate in such a way that the wire hook of the lock plate is usually overlapped with the connecting part, and when the vehicle body collides, the inertia wire release plate is able to hold the interlocking wire connected to the lock plate. to move the interlocking wire 1-lock grate from the predetermined connection position. Therefore, no tensile force from the interlocking wire acts on the lock plate, and the lock plate is held in a locked state with respect to the slide rail.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

1 to 3 show the locking mechanism operated via the interlocking wire of the seat adjuster. In the figure, α■ is a slide rail consisting of a lower rail (B) that is fixed to the vehicle floor F side and an upper rail (To) that is attached to the seat cushion Sc side, and the lower rail (2) K is the upper rail ( A retaining plate α◆ is fixed opposite to the side surface of the upper rail (2), and a retaining plate α◆ is fixed to the side surface of the upper rail (2) in a manner corresponding to the retaining hole (G) formed in the retaining plate α rod. A stop hole αQ is provided.

A bracket α is fixed on the upper surface of the upper rail (to) in close proximity to the locking hole αQ, and the lock plate α barrel is rotatable in the direction facing the retaining plate α◆. This lock plate (to) has a lock claw (18 m) that is inserted into the locking hole (e) of the upper rail (to) through the retaining hole (to) of the retaining plate 04. It is provided. This locking grating (to) is rotated and biased by the tension coil spring (a) K so as to be opposed to the constantly engaging grating α, so that the lock claw (18m) passes through the engagement hole (c) to the upper rail (2). ) is inserted into the locking hole a, and the first rail is inserted (to)
is designed to be locked against the lower rail (2). In addition, this lock plate (to) has an operating handle (to) at the free end, similar to the conventional example described above (Fig. 4).
(not shown) via an interlocking wire 〇η, and when the operating handle is rotated, the interlocking wire (to) is pulled, and accordingly, the tension coil spring rotates against the biasing force of the The locking claw (18m) is removed from the engagement hole (G) of the retaining plate α→ and the engagement hole α of the upper rail (to), and the lower rail (18m) of the upper rail α1 is removed.
6) is unlocked.

In this example, the lock plate α and the interlocking wire (c) are connected by forming a hook part (18b) that opens forward at the free end of the lock plate (to), and on the other hand, at the end of the interlocking wire Qη. , its end is wound into a loop shape and tied with a retaining spring (2) to form a loop end (21 m).
1, and connect the loop end (21m) by hooking it onto the hook part (18b) of the lock plate (2). In addition, when using interlocking wire, the loop end (21a
) The length of the hook part can be freely adjusted by changing the binding position of the retaining spring (A).

And the free end of the lock plate (to) has a hook part (
The inertia wire release plate (to) set at the tip of the retaining groove (23m) corresponding to 18b) is rotatably supported by the shaft pin (c) K at the rear of the inertia wire release plate. A balance spring (
Interlocking wire that can be hung on the hook part (18b) of the lock plate α camphor by stretching the C) and constantly rotating it backwards. The loop end (21m) of (2) is held down by the front edge of the engagement groove (23m). Note that it is desirable that the inertia wire release grate (to) be formed of a metal material having the required weight and strength.

In this way, the lock plate (to the K-biased inertia wire release plate) is normally connected to the hook part (18
b) The engaging groove (23&) and the hook part (
An insertion hole for the interlocking wire chest is formed by the recessed portion 18b), and the interlocking wire (b) is connected and held to the lock plate α.

Therefore, the lock plate (to) is aligned with the engagement hole (a) of the grating ◆ when the lock claw (18 &) is held by the biasing force of the tension coil gelling (a) and the traction force of the interlocking wire deer that resists this biasing force.・Latching hole α between armpit and rail (to)
The upper rail (6) is rotated to be inserted into and removed from Q, and the upper rail (to) is locked and unlocked from the lower rail (6) K.

When a collision occurs with a running vehicle while the lock plate (to) is locked to both rails (2) (to), a specified inertia force is generated on the inertia wire release grate (2) due to the acceleration caused by this collision. For this reason, the inertia wire release plate () is accelerated and rotated forward with respect to the lock plate (K) against the biasing force of the balance spring (C), and the engagement groove (23 &) at the tip is rotated forward with respect to the interlocking wire ( (c) Loop end (21a) T Hook part (18b) of Lock Plate (Incorporated) The predetermined hook for K is moved forward from the position and released from the hook part (18b), and the interlocking wire (b) to a free state to release the tension in the lock release direction on the lock plate (to).

(Accordingly, lock play) (11 is not rotated, and the lock claw (18 &) is held in a communicating state inserted into the locking hole (2) of the upper rail (to) and the locking hole of the locking grade 0), and the upper The rail (A) maintains a locked state with respect to the lower rail (6) to prevent the seat cushion from moving due to a collision with the vehicle body, thereby preventing its deformation and improving safety.

In this example, the present invention is applied to an IcL & lock mechanism in which the lock plate is operated by pulling the interlocking wire on the slide rail on one side of the seat adjuster. Of course, the present invention can also be applied to a locking mechanism in which the locking plates of the slide rails on both sides are operated via interlocking wires.

〔Effect of the invention〕

As described above, according to the present invention, in the seat adjuster in which the lock plate for locking the slide rail is rotated by the operation handle via the interlocking wire to unlock the seat adjuster, the interlocking wire is hooked on the lock plate at the connecting portion. is provided, and an inertia wire release grate is installed corresponding to this connection part, and the inertia wire release plate is actuated by the action of acceleration due to a collision of the vehicle body, and the interlocking wire is moved from the predetermined connection position of the lock plate. Therefore, even if the interlocking wire is inadvertently pulled due to deformation of the vehicle floor during a collision, the interlocking wire is moved from the predetermined connection position of the lock plate at this point, and no tensile force is applied to the lock plate.
Therefore, the slide rail remains locked and the seat cushion is prevented from moving and deforming, improving safety.In addition, the existing locking mechanism, that is, the inertia wire release on the lock plate, can improve safety. Manufacturing is simple because the grate is simply assembled, and the interlocking wire can be connected by simply hooking it onto the lock plate, which improves assembly work efficiency and is advantageous in terms of cost.

[Brief explanation of drawings]

FIG. 1 is a plan view of an example of the locking mechanism of the seat adjuster according to the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. FIG. 3 is a schematic plan view of a conventional seat adjuster. In the figure, aη is the slide rail, (6) is the lower rail, (
To) hub horn 4-rail, α◆ is engagement grate, to) C engagement hole, αQ is locking hole, (goods) is lock plate, (t
ea) is the locking claw, (18b) is the hook part, (to) is the interlocking wire, (to) is the inertia wire release plate, (2)
3) is the retaining groove, and (c) is the balance spring.

Claims (1)

[Scope of Claims] A seat adjuster for a vehicle seat in which a lock plate for locking a slide rail is unlocked by being rotated by an operation handle via an interlocking wire, wherein the interlocking wire is hooked to the lock plate. A connecting portion is provided, and an inertia wire release plate is mounted corresponding to the connecting portion, and the inertia wire release plate is actuated by the action of acceleration due to a collision of the vehicle body, and the interlocking wire is moved to a predetermined connecting position of the lock plate. A seat adjuster for a vehicle seat, characterized in that the lock plate is moved from the lock plate to prevent transmission of tensile force to the lock plate.