JPS6334993Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seat walk-in device, and more specifically, it includes a lock mechanism that locks the front and rear slide device of the seat cushion, and a lock mechanism that operates based on a certain tilting movement of the seat back. The present invention relates to a seat walk-in device that includes a locking mechanism that maintains the seat in an unlocked state and a connecting member that connects the locking mechanism and the locking mechanism.

Conventionally, when the seat back is tilted forward,
Walk-in devices have come into use that move the seat cushion to the frontmost position of the front-rear sliding mechanism, making it much easier for a seated person to get on and off the vehicle.

The locking mechanism of the longitudinal slide device of the walk-in device and the locking mechanism that holds this locking mechanism in an unlocked state are connected by a connecting wire, and when this wire is attached, the locking mechanism and the locking mechanism operate accurately. You must do so. In other words, after one end of the wire is locked or fixed to the locking mechanism, if the other end of the wire is fixed to the locking mechanism while pulling the wire, the wire may be pulled too much and the front/rear sliding device may become locked. If the lock is half-locked or if it is fixed so that it is not half-locked, there will be too much play and the walk-in device will not be able to operate. Therefore, the length of the wire must be adjusted taking into account the mechanical play in both the locking mechanism and the locking mechanism, which is complicated and extremely difficult to adjust, and when the lengths of the wires are different. The protruding position of the operating handle for manual operation of the locking mechanism changes, and the operating handle cannot be set at a predetermined constant position. Furthermore, if a wire is fixed between the locking mechanism and the locking mechanism, one end of the wire will move in a direction that narrows the distance between both ends of the wire when the locking mechanism is operated with the operating handle, so the wire may become bent or bent. However, there is a risk that the locking mechanism may be activated by the bending force applied to the wire, which has the drawback that accurate operation of the walk-in device cannot be achieved.

The purpose of this invention is to be able to easily adjust the play between the locking mechanism and the locking mechanism, to operate the walk-in device accurately, and to provide a protruding position of the operating handle for manual operation of the locking mechanism. To provide a seat walk-in device that can be set at a predetermined constant position, and that does not affect the locking mechanism when the locking mechanism is operated with an operating handle, thereby preventing malfunction of the walk-in device. This will become clear from the detailed description below with reference to the drawings.

FIG. 1 schematically shows an embodiment of a seat walk-in device according to the present invention, and this walk-in device 1 includes a seat back and forth sliding device 2.
and a reclining mechanism 3 for mounting the seat back so as to freely tilt forward, and the front-rear sliding device 2 includes a vehicle body side slide rail 4, a seat cushion side slide rail 5, and a lock for locking the seat cushion side slide rail 5. A mechanism 6 is provided.

The reclining mechanism 3 includes a base 8 fixed to the seat cushion side slide rail 5, and an arm 9 rotatably supported on the base 8 by a pivot shaft 10, and is operated by a reclining lever 11 (not shown). Arm 9 is adjusted by the angle adjustment section.
The inclination angle is adjusted.

A pin 13 is implanted in the arm 9, and this pin 1
3 is inserted into an arcuate groove 14 formed in the base 8 around the pivot shaft 10, and one end of a sensing wire 16 serving as a sensing mechanism for sensing forward tilt of the seat back is connected to the protruding end of this pin 13. ing.
The other end of this sensing wire 16 is a locking mechanism 2 which will be described later.
1. When the arm 9 is rotated in the direction of arrow a, the pin 13 is rotated in the direction of arrow b,
The sensing wire 16 is pulled in the direction of arrow c.

In this embodiment, the locking mechanism 21 extends from the front of the base 8 and is fixed to the front back side of the base 8, but when the base 8 is not extended from the front, the locking mechanism 21 is attached to the seat cushion side slide rail 5. It can also be attached to etc. As shown in an enlarged view in FIG. 2, this locking mechanism 21 has a base plate 22 extending substantially horizontally, and a rotating plate 23 is rotatably attached to the base plate 22 by a pivot pin 24. A coil spring 25 fitted between the head 24a of the pivot pin 24 and the rotating plate 23 normally urges the rotating plate 23 downward. Further, the base plate 22 is provided with an arc-shaped elongated hole 26 and a locking hole 27 centered around the pivot pin 24, and the rotating plate 23 is provided with a push-up pin 28 and a locking pin 29. These push-up pins 28 and locking pins 29 are connected to the elongated holes 2.
6 and lock hole 27, respectively. The push-up pin 28 is always fitted into the elongated hole 26 and restricts the entire rotation range of the rotating plate 23, and the locking pin 29 can only be rotated while it is fitted into the locking hole 27. The rotation of the moving plate 23 is restricted.

The locking pin 29 is formed to have a shorter length projecting downward from the rotating plate 23 than the push-up pin 28, and has a protruding portion 29a projecting upward from the rotating plate 23. The other end of the sensing wire 16 serving as the sensing mechanism is connected to the protrusion 29a. Further, a through hole 33 is formed at a position a predetermined length away from the position where the protruding portion 29a of the rotating plate 23 is formed, and is connected to the lock mechanism 6 of the slide device 2, which will be described later. One end of the connecting member 61 is locked.

As shown in FIG. 3, the locking mechanism 6 of the front-rear slide device 2 includes a base plate 41 fixed to the seat cushion side slide rail 5, and is rotatably supported on the base plate 41 by a pivot pin 43. A lock pin 4 that engages with the operating handle 42 and a lock tooth row 45 formed on the vehicle body side slide rail 4
6, and a spring 47 that biases the lock pin 46 in the direction in which it is normally locked.The lock pin 46 is provided with a through hole 46a.
A locking piece 49 formed at the tip of the operating handle 42 is inserted through a through hole 48 formed in the substrate 41 at 6a. Therefore, the operating handle 4
2 in the direction of arrow d, the lock pin 46
is moved in the direction of arrow e by the locking piece 49, and the engagement between the locking pin 46 and the locking tooth row 45 can be released. A screw hole 51 is formed in the lock pin 46 of the lock mechanism 6, and this screw hole 5
A connecting member 61, which will be described later, is fixed via 1.

FIG. 4 and FIG. 5 schematically show an embodiment of the connecting member, and this connecting member 61 consists of a connecting wire 62 and a bracket 64, and each end of the connecting wire 62 is provided with a bent portion. Locking portions 63 are formed, and the bracket 64 has guide portions 65,
The guide portion 65 has a long hole 66 and an operation piece 67, and is formed by winding downward along the longitudinal direction of the connecting wire 62 to have a substantially circular cross section. is slidably held, and one locking portion 6 of the connecting wire 62
3 is adapted to be latched to one end of the guide portion 65. An elongated hole 66 is formed at the center of the bracket 64 along substantially the same longitudinal direction as the guide portion 65, and an operating piece 67 is formed to protrude upward from one end.

The other locking portion 63 of the connecting wire 62 is connected to the through hole 33 formed in the rotating plate 23 of the locking mechanism 21 described above.
The bracket 64 is secured to the screw hole 5 formed in the lock pin 46 of the lock mechanism 6 by a fixing member 68 such as a bolt inserted through the elongated hole 66.
1 to the lock pin 46.

When fixing the bracket 64 to the lock pin 46, the lock mechanism 21 is not activated, that is, the lock pin 29 is fixed to the lock hole 2 formed in the base plate 22.
7 and the connecting wire 62 is fully pulled. Also, the locking is performed with the locking pin 46 of the locking mechanism 6 engaged with the locking tooth row 45, and at this time, the locking is performed at a position where the elongated hole 66 of the bracket 64 and the screw hole 51 face each other, that is, at a position above the screw hole 51. By fixing the bracket 64 with a fixing member 68 such as a bolt, the length of the connecting member 61 can be adjusted, and this can be done while pulling the operating piece 67 of the bracket 64, so the work can be done easily and quickly. Further, since the lock pin 46 of the lock mechanism 6 is not pulled in the unlocking direction, the connection with the lock mechanism 21 can be performed accurately.

6A and 6B show the operating states of the connecting member 61 before and after operating the operating handle 42, respectively. Before operating the operating handle 42, one side end of the guide portion 65 of the bracket 64 One locking portion 63 of the connecting wire 62 is locked to. In this state, when the rotating plate 23 of the locking mechanism 21 rotates based on the movement of the sensing wire 16 in the direction of the arrow c, the connecting wire 62 is pulled in the direction of the arrow f, and the lock pin 46 is pulled in the same direction. and the locking pin 29 of the locking mechanism 21 fits into the locking hole 27,
The lock mechanism 6 is held in the unlocked state.

Further, when the operating handle 42 is operated to move the lock pin 46 in the direction of arrow g from the operating handle 42 side as shown in FIG. 6B, the connecting wire 62 does not move and the guide portion 65 of the bracket 64
moves along the longitudinal direction of the connecting wire 62, causing the connecting wire 62 to curve or causing the locking mechanism 21 to malfunction.

The fitted state between the locking pin 29 of the locking mechanism 21 and the locking hole 27 is released by a pusher plate 71 shown in FIGS. 1 and 2. That is, the lower end of the push-up pin 28 is pushed upward by the trapezoidal top 72a of the pusher portion 72 of the pusher plate 71, so that the locking pin 29 is pushed up into the locking hole 27.
The lock pin 46 of the lock mechanism 6 moves in the lock direction due to the bias of the spring 47.

The above description merely shows one embodiment of the walk-in device according to the present invention, and for example, the configuration of the front and rear slide device 2, the configuration of the locking mechanism 21, the configuration of the pusher plate 71 and the connecting member 62, etc. are not shown in the drawings. The present invention is not limited to this, and various modifications and changes can be made.

According to the seat walk-in device of the present invention, the connecting member that connects the locking mechanism and the locking mechanism to each other can be easily and quickly installed, and the play between the locking mechanism and the locking mechanism can be reduced by adjusting the length of the bracket. Since the installation can be adjusted through the holes, the walk-in device can be operated accurately.Also, when installing the connecting member, the lock pin will not be pulled too much, so the protruding position of the operating handle for manual operation of the lock mechanism can be adjusted. It is possible to obtain a seat walk-in device that can be set at a predetermined constant position and that does not cause the connecting wire to bend or cause the locking mechanism to malfunction when the operating handle is operated.

[Brief explanation of the drawing]

Fig. 1 is a perspective view schematically showing an embodiment of the seat walk-in device according to the present invention, Fig. 2 is a perspective view showing an embodiment of the locking mechanism, and Fig. 3 is an embodiment of the locking mechanism. FIG. 4 is a perspective view showing an embodiment of the connecting member, FIG. 5 is a partial perspective view showing the state of connection between the bracket and the lock pin, and FIGS. 6 A and B show how the operating handle is operated. FIG. 6 is an explanatory front view showing the operating state of the connecting member before and after operation, respectively. In the figure, 1... walk-in device, 2... front and rear slide device, 3... reclining mechanism, 4...
Vehicle body side slide rail, 5... Seat cushion side slide rail, 6... Lock mechanism, 8... Base, 9... Arm, 16... Sensing wire, 21
... Locking mechanism, 23 ... Rotating plate, 26 ... Long hole,
27...Lock hole, 28...Push-up pin, 29...
Lock pin, 42... Operation handle, 46... Lock pin, 51... Screw hole, 61... Connection member, 6
2... Connection wire, 63... Locking part, 64... Bracket, 65... Guide part, 66... Long hole, 7
1... Pusher plate, 72... Pusher portion.

Claims (1)

[Scope of utility model registration request] A locking mechanism that locks the front and rear sliding device of the seat cushion, a locking mechanism that operates based on a certain tilting movement of the seat back and holds the locking mechanism in an unlocked state, and a connection that connects the locking mechanism and the locking mechanism. In the seat walk-in device, the connecting member includes a wire having locking portions formed at both ends, and a bracket to which one end of the wire is connected, and the bracket is connected to one of the wires. It has a guide part that locks the stop part and holds the wire slidably in the longitudinal direction thereof, and a long hole formed along the longitudinal direction of the wire, and connects the locking mechanism and the locking mechanism. A walk-in device for a seat, characterized in that adjustment can be made through a long hole in the bracket.