JPS6326057Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat adjustment device, and more particularly, to a seat adjustment device for adjusting the reclining and sliding actions of a reclining and sliding seat.

The slide lock of the slide mechanism is released by the forward tilting movement of the reclining backrest.
The mechanism in which the seat slides to the frontmost position by the action of a help spring is known as a walk-in mechanism in automobiles, for example, but conventionally this mechanism has been replaced by a normal reclining control lever attached to the side of the seat. 4 (Fig. 1), and the lock release operation handle 1 (Fig. 1), which is attached to the upper side of the backrest so that it can be operated from the rear seat of a car, for example. It's getting old. Therefore, for example, if a child or infant accidentally operates the reclining control lever attached to the side of the seat, the seat back will be folded forward as shown in Figure 1, and the seat will be tilted forward. It will slide forward, putting the child or infant at risk of colliding with the dart board, etc. in front of it.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the conventional technology, so that when the reclining control lever is operated, the backrest does not fall forward, but reclines and tilts primarily backwards, and the seat does not slide forward. The purpose of the present invention is to provide a seat adjustment device in which the backrest portion is brought into a forward-folding state and the seat is slid forward only by operating the lock release operating handle.

Furthermore, in detail, as shown in FIG.
5 performs a reclining and tilting operation within the range of angle R, no sliding operation is performed, and when the lock release operation handle is operated, the backrest portion 15 can be tilted forward as shown in FIG.
In addition to performing reclining and tilting movements within the range of
When it is in the forward position, it slides forward a distance L.

The present invention will be explained below with reference to illustrated embodiments.

In FIG. 4, the lower part of both sides of the seat back 15 is attached to the arms 7, 7'.
The lower ends of the arms 7, 7' are rotatably attached to a rotation shaft 50 provided at the rear of the seat 14. At the bottom of the arm 7 is a base plate 1.
6 is attached thereto, and a reclining operation lever 4 is provided thereto, thereby operating a reclining mechanism (not shown).
Further, slide top rails 41, 41' are integrally attached to the lower end of the seat portion 14, and these slide top rails 41, 41' are fixed on an immovable part such as the floor on which the seat is placed. They fit into the slide lower rails 12 and 12', respectively, so that the seat can slide in the front and back direction. However, the lock member 11 provided in the middle of the slide upper rail meshes with the lock teeth 18a of the lock plate 18 integrally attached to the slide lower rail 12, thereby locking the seat from sliding. A help spring 13 is inserted into a hole 19a formed at the left end of the plate 19 fixed near the rear end of the slide top rail 41.
One end of the help spring 13 is hung, and the other end of the help spring 13 is attached to a hole 20a formed in the left end of the plate 20 fixed to the front end of the slide lower rail 12.
This allows the slide atsupararu 4
1 is biased to be pulled forward. Therefore, although the seat is biased to slide forward, the locking member 1 described above is
1 and the lock teeth 18a of the lock plate 18, their movement is prevented. Further, a slide operation lever 34 is disposed in front of the seat portion 14, and a rear end portion of this lever 34 that is bent and extends rearward is connected to the middle of the lock member 11. When the slide operation lever 34 is operated upward as shown by the arrow 35, the lock member 11 is activated, the engagement between the lock member 11 and the lock teeth 18a of the lock plate 18 is released, and the seat is The action of the spring 13 allows it to slide forward. One end of an L-shaped lock release lever 92 is connected to the upper end of the lock member 11 via the auxiliary connection member 51, and one end of the slide release wire 9 is connected to the other end of this lever 92. .

An operating lever 4 is located on the upper side of the backrest portion 15.
0 is attached, and a lock release operation handle 1 for operating the walk-in mechanism is attached via a connecting rod 21. Furthermore, one end of the lock release wire 2, which is a component of the walk-in mechanism, is attached to the lower end of the operating lever 40.

FIG. 5 shows details of the reclining operating lever 4, arm 7, base plate 16 and the reclining mechanism constituted by these shown in FIG. 4, as well as the seat adjustment device of the present invention. The arm 7 is rotatably attached to the base plate 16 via a rotation shaft 50, and arm teeth 7a, which are engagement teeth, are formed at the lower end of the arm 7.
This arm tooth 7a meshes with a lower tooth 6a, which is a locking tooth of a reclining lock plate 6 rotatably supported on a support shaft 44, and the arm 7 is locked from rotation. A reclining operation lever 4 rotatably supported by a pin 42 is provided on the left side of the lock plate 6, and a circular engagement member 5 is attached to the middle of this operation lever 4, and the reclining operation lever 4 is rotatably supported by a pin 42. The engagement member 5 is in contact with the lower left end of the plate 6. The lock plate 6 rotates counterclockwise around the support shaft 44, and its lower tooth 6a is constantly biased by means such as a spring (not shown) in a direction away from engagement with the arm tooth 7a. An engaging member 5 provided on the lever 4 contacts the lower left end of the lock plate 6 and pushes it upward, preventing the above-mentioned operation of the lock plate 6, and lower teeth 6a and arm teeth 7.
maintains meshing with a. Also, for this purpose, the operating lever 4 is always urged to rotate counterclockwise about the pin 42 by a spring (not shown), thereby causing the engaging member 5 to lock onto the lock plate 6. is being pushed upward.

The other end of the lock release wire 2 is connected to the fifth
As shown in the figure, it is attached to the lower end 3a extending downward of the lock release lever 3, which is a component of the walk-in mechanism rotatably provided on a pin 43 provided below the reclining operating lever 4. It is being This lock release lever 3 is formed to extend upwardly in a direction opposite to the lower end portion 3a, and its upper end portion 3b serves as a restricting means for the walk-in mechanism disposed on the left side near the lower portion of the arm 7. It is in contact with the circular arm regulating member 8 . The arm regulating member 8 is fitted into a long hole 16a formed in the base plate 16, and is fitted with a pin 46 fixed to the base plate 16.
The other end of the torsion spring 47 is hung on the arm regulating member 8, so that the arm regulating member 8 is always urged to rotate clockwise about the pin 46. As a result, it is located at the right end of the elongated hole 16a, and the upper end 3b of the lock release lever 3 is located at the right end of the long hole 16a.
is in contact with.

The other end of the slide release wire 9, which is a component of the walk-in mechanism, is attached to the lower end of the arm 7, as shown in FIG. 5, so that the arm 7 can move forward as shown in FIG. When the slide release wire 9 is tilted, the slide release wire 9 is pulled in the direction shown by the arrow 60, thereby pulling one end of the lock release lever 92 shown in FIG. arrow 6
The seat is rotated in the direction indicated by 1 to actuate the lock member 11, disengage the lock teeth 18a of the lock plate 18 and the lock member 11, and slide the seat forward.

As described above, the seat adjustment device of the present invention is configured. Next, its effect will be explained.

First, a case will be described in which the reclining operation lever 4 is operated as usual. In this case, the arm 7, that is, the backrest portion rotates within the range of angle R as shown in FIG. 2, and does not fall forward. That is, as shown in FIG.
When the lock plate 6 is operated in the direction shown by the arrow 62, the engaging member 5 that is pushing the lock plate 6 upward tends to move away from contact with the lock plate 6, and the pushing force toward the lock plate 6 is removed. Therefore, the lock plate 6 rotates counterclockwise around the support shaft 44, and its lower tooth 6a disengages from the arm tooth 7a, making the arm 7 freely rotatable and moving to the angle shown in FIG. 2 above. Rotates within the R range. When the arm 7 is rotating within this range, the slide release wire 9 attached to the lower end of the arm 7 moves along the arrow 60 in FIG.
Since it is not pulled as shown in , the locking mechanism of the slide mechanism does not disengage, and therefore the seat remains in the same position without sliding.

Note that when the backrest portion is rotated to the farthest forward position within the range of angle R shown in FIG. 2, the front side near the lower end of the arm 7 contacts the arm regulating member 8 in FIG. The arm 7 is prevented from rotating forward, and the range of rotation is determined. Further, when the arm 7 comes into contact with the arm regulating member 8 and stops rotating forward, the arm regulating member 8
Since the arm 7 is supported by a torsion spring 47, it serves as a buffer material, and the arm 7 is stopped by softening the contact impact.

Next, the case where the walk-in mechanism is activated by operating the lock release operating handle 1 provided on the upper side of the backrest will be described. For example, when this is applied to the front seat of a car, it is operated from the rear seat, and in this case, the arm, that is, the backrest part, is within the range of angle S, as shown in Fig. 3. It rotates and even moves forward. First, in FIG. 4, when the lock release operating handle 1 is operated, the operating lever 40 is actuated via the connecting rod 21, thereby pulling the lock release wire 2 in the direction shown by the arrow 24. As a result, the lower end of the lock release lever 3 shown in FIG. to push the arm regulating member 8 to the left, and as a result, the arm regulating member 8
moves to the left corner in the elongated hole 16a against the torsion spring 47, and at the same time, the middle left side of the lock release lever 3, that is, the left side of the base of the upwardly extending portion is provided on the reclining operation lever 4. In order to push the engaged member 5 to the left, the lock plate 6 rotates counterclockwise around the support shaft 44.
The engagement between the lower teeth 6a and the arm teeth 7a is released as shown in FIG. 6, and the arm 7 becomes freely rotatable. In this case, the forward rotation of the arm 7 is determined at the position where it comes into contact with the regulating member 8 that has moved to the left, which is the position indicated by line 64 in FIG. 5, and the angle shown in FIG. The backrest portion is rotatable within the range of S.

Generally, the reclining mechanism of the backrest is urged to rotate forward by a biasing means such as a spring (not shown), and when the backrest becomes freely rotatable as described above, The operator supports the biased backrest with his or her hands and rotates it to a desired position, stops operating the lock release operating handle 1 or the reclining operating lever 4 at that position, and returns to the original position. When it is returned, the arm 7 is locked to the lower teeth 6a at that rotational position,
Locked.

Further, as described above, when the lock release operating handle 1 is operated to make the arm 7 rotatable, the arm 7 is moved to the sixth position by the action of a spring (not shown) of the above-mentioned reclining mechanism. As shown in the figure, it is brought forward. the result,
The slide release wire 9 attached to the lower end of the arm 7 is pulled in the direction of the arrow 60, the slide mechanism is unlocked as described above, and the seat slides to the frontmost position. This sliding amount is a distance L as shown in FIG.

As explained above, according to the present invention, the arm regulating member is provided as a regulating means for the walk-in mechanism, and the arm regulating member regulates the forward rotational position of the arm. When operating the normal reclining control lever, the forward rotation of the arm is restricted and the arm does not fall forward, but by operating the lock release control handle provided at the top of the side of the backrest so that it can be operated from the rear. The walk-in mechanism operates and the arm regulating member moves via the lock release lever, thereby enabling the arm to rotate forward, that is, fold forward, and at the same time, this forward folding action releases the seat slide lock. Since the seat is designed to slide all the way to the front, for example, if a child or infant accidentally operates the reclining control lever while sitting in the seat, the backrest will fall forward and slide further. , no risk of being crushed.

Further, in the above embodiment, the arm regulating member 8
is supported by a torsion spring 47 and serves as a buffer material against the contact of the arm 7, thereby alleviating the impact of the arm 7.

[Brief explanation of the drawing]

Fig. 1 is a side view of the seat for explaining the drawbacks of the conventional seat, Figs. 2 and 3 are side views of the seat for explaining the features of the present invention, and Fig. 4 is a side view of the seat for explaining the features of the present invention. A perspective view of a seat adjustment device showing an embodiment, FIG. 5 is a side view of the seat adjustment device of FIG. 4, and FIG. 6 is a side view of the seat adjustment device of FIG.
FIG. 5 is a diagram showing the operating state of FIG. 5; 1... Lock release operation handle, 2... Lock release wire, 3... Lock release lever,
4... Reclining operation lever, 5... Engaging member, 6... Reclining lock plate, 6
a...Lower teeth (locking teeth), 7...Arm, 7
a... Arm teeth (engaging teeth), 8... Arm regulating member, 9... Slide release wire, 11...
...Lock member, 12, 12'...Slide lower rail, 13...Help spring, 14...Seat portion, 15...Backrest portion, 16...Base plate, 18...Lock plate, 18a...Lock tooth, 41, 41'...Slide up rail, 4
7...Torsion spring.

Claims (1)

[Claims for Utility Model Registration] A reclining mechanism that reclines and tilts the backrest part 15 in the front and back direction using the reclining device lever 4; In the seat adjustment device, the walk-in mechanism is connected to the lock release operation handle 1. Lock release wire 2
The lock release lever 3 is rotated by the lock release lever 3 to push an arm regulating member 8, which is a regulating means described later, to enable the backrest arm 7 to be folded forward. A slide release wire 9 of a predetermined length is provided to release the slide lock state of the part 14 side and slide the seat part 14 side forward, and the regulating means presses against the backrest arm 7 with a predetermined elastic force to release the backrest. It consists of an arm regulating member 8 for preventing the part 15 from falling forward, and the arm regulating member 8 slides against the elastic force by rotation of the lock release lever 3 and presses against the backrest arm 7. A seat adjustment device characterized by changing its position.