JPH0115535Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a seat device.

Conventionally, in van-type automobiles, two-door automobiles, etc., a walk-in mechanism has been well known in which the seat back of the front seat is folded forward and the front seat is moved forward in conjunction with the folding of the seat back in order to get in and out of the rear seat. There is. It is also well known that the seat back of the front seat is tilted backwards so that the seat back lies almost horizontally to form the same horizontal plane as the seat cushion of the rear seat, so that the seat can be used fully flat. When used in the fully flat position, it is necessary to slide and lock the seat cushion at the front end in order to move the seat to the front end and tilt the seat back backwards.

However, if the walk-in mechanism is attached to a seat that is used in a fully flat position, the seat moves to the frontmost position when the walk-in mechanism is activated, and then when returning to the normal seating position, the seatback must be folded forward. If you raise it up, the slide lock will be activated and you will not be able to move the seat backwards. Therefore, since the seat must be returned to the rear after operating the slide lock release lever, there is a problem in that it is inconvenient to return the seat after the walk-in mechanism has been activated.

The present invention was proposed in order to improve the above-mentioned problems, and includes a sliding mechanism that is fixed to the lower part of the seat cushion and the floor member and supports the seat in a slidable manner.
a locking mechanism that locks the sliding mechanism at a normal seating range within the seat movement range by the sliding mechanism and at a frontmost position located forward of the normal seating range;
A reclining adjuster that connects the seat cushion and the seat back and releases the locking mechanism by tilting the seat back forward, a return spring that biases the seat in a direction to move the seat forward, and a return spring that controls the movement of the seat. The gist of the seat device is that it includes a stopper member made of an elastic member that brakes the seat immediately before the locking mechanism is activated at the frontmost position.

According to the present invention, when returning the seat that has been moved as the seatback is folded forward to the normal seating position, the slide lock section is not activated by the stopper member even if the seatback is raised, so that the seat can be returned to the normal seating position while the seatback is raised. It has the effect of being able to be returned to its original position and making the operation easier.
In addition, when using the seat in a fully flat position, all you have to do is push the entire seat forward against the biasing force of the stopper member and activate the locking mechanism, so it is easily locked and the seat does not move while driving. This has the effect of providing a safe fully flat state.
An embodiment in which the present invention is applied to a second row seat of a van-type vehicle will be described with reference to FIGS. 1 to 5. 1
1 is a second row seat, and is a bench type seat in which a seat back 3 and a seat cushion 5, which are divided into left and right halves, are connected by reclining adjusters 7 on both left and right sides. Reference numeral 9 designates a seat stand, and FIG. 3 shows the seat stand on the left side, which is fixed to the lower portions of both sides of the seat cushion 5, and is shaped like a box with a substantially rectangular side view and a U-shaped cross section.
The seat 1 is supported by a pair of both sides of the seat cushion 5. 10 is a sliding mechanism, Atsupa rail 1
1 and a lower rail 12. The upper rail 11 is fixed to the lower surface of the seat stand 9, and the lower rail 1 is fixed to the floor member 13.
2 and is slidably engaged in the front-back direction. Reference numeral 15 denotes a control lever for the reclining adjuster 7, which operates the reclining adjuster 7 to set the seat back 3 at an arbitrary angle. A walk-in operation pedal 17 projects rearward from the reclining adjuster 7 and is interlocked with the operating lever 15 of the reclining adjuster 7.

Reference numeral 19 denotes a reinforcing panel, which is formed into a U-shaped cross section and is fitted inside and fixed to the central portion of the seat stand 9 in the front-rear direction. Reference numeral 21 denotes a latch support that constitutes the locking mechanism, and is formed into a substantially box shape, the outer side is welded to the reinforcing panel 19, the upper and inner sides are open, the front and rear sides pivotally support the shaft 23, and the lower side is welded to the reinforcement panel 19. A hole 25 is formed in the portion, and a folded portion 27 is further formed in the lower part, and rectangular first lock holes 29 are formed in the folded portion 27. Reference numeral 33 denotes a latch plate constituting the locking mechanism, with a small hole 31 bored in its upper end and a latch support 21 in its center.
It is welded to the shaft 23 between its front and rear surfaces, and its lower end has claws 34, 34 which pass through the hole 25 of the latch support 21, extend downward and are bent back at an acute angle. A lock spring 37 is fitted over the rear extension of the shaft 23, and biases the pawls 34, 34 at the lower end of the latch plate 23 inward of the vehicle body. Reference numeral 39 denotes a lock plate constituting the lock mechanism, which has an L-shaped cross section, and a part of the long side 41 of the L-shaped cross section is welded to the lower surface of the lower rail 12, and is arranged in the longitudinal direction of the vehicle. , rectangular second lock holes 45, . First lock holes 29, 29 and second lock holes 45, 4
5. Further, at the front end of the lock plate 39, third lock holes 45', 45', which are used for fixing the sliding mechanism 10 when the seat 1 is used fully flat, are provided on the L-shaped short side 43. 2
The lock holes 45, 45 are of the same size and are bored at the same interval. A spring holder 47 has a cylindrical shape and is welded to the short side 43 and long side 41 of the front end of the lock plate 39, with the front end closed. Reference numeral 49 denotes a stopper spring constituting a stopper member, one end of which is fixed inside the cylinder of the spring holder 47, and the other end directed rearward. Reference numeral 51 designates a stopper bracket, one end of which is fixed to the front surface of the latch support 21, the other end of which extends downward, and which comes into contact with the stopper spring 49 when the upper rail 11 slides. It is placed in a position where it can be touched.

Reference numeral 53 designates a lower bracket, which is an L-shaped flat plate having a small hole 55 bored in one end thereof, and the other end is welded to the short side 43 of the front end of the lock plate 39. Reference numeral 57 denotes a top bracket, one end of which is welded to the rear of the seat stand 9, and a small hole 59 formed in the other end.

Reference numeral 61 is a return spring, which has both ends connected to the small hole 55 of the lower bracket 53 and the upper bracket 57.
The seat 1 is held in the small hole 59 and stretched, and the seat 1 is moved forward. Above stopper spring 4
9, the movement of the seat 1 by the return spring 61 is caused by the pawls 34, 34 and the third lock holes 45', 4.
5' is strong enough to be braked immediately before engaging.

63 is a seat slide lever, which has a knob at the front end and is pivoted at the center of the seat cushion 5.
It is formed from a member with a letter-shaped cross section. Reference numeral 65 denotes a central bracket, the upper surface of which is fixed to a frame disposed in the center of the seat cushion 5, to which the seat slide lever 63 is pivotally connected via a downwardly implanted pin 67. It has an angular cross-section with a stopper portion for restricting the rotation, and its outer shape is bent into a crank shape.

A release member 69 is a channel-shaped member inserted into the center of the seat slide lever 63 and pivotally connected to the seat slide lever 63 by a pin 67. 71 is a wire, one end of which passes through the seat slide lever 63 and is engaged with the front and rear ends of the release member 69, and the other end of which is engaged with the small hole 31 of the latch plate 33.

Reference numeral 73 denotes an inner cable, which is inserted into the inside of the outer cable 75 and has one end locked to the front and rear ends of the release member 69, and the other end locked to the reclining adjuster 7. The operation of this embodiment with the above configuration will be explained below. The second row seat 1 is a seat that can be used fully flat, and is also equipped with a walk-in mechanism.

When using the seat fully flat, when the seat slide lever 63 is rotated in the direction of the arrow in FIG. 5 while the seat is in a normal seating position, the wire 71 is pulled, and the latch plate 33 is rotated about the shaft 23. The claws 34, 34 of the latch plate 33 are
The engagement between the first lock holes 29, 29 of the latch plate 33 and the second lock holes 45, 45 of the lock plate 39 is released, and the upper rail 11 becomes slidable, and the urging force of the return spring 61 causes the upper rail 11 to become slidable. Seat 1 is automatically moved forward. Furthermore, when the seat 1 moves forward, the stopper bracket 51 comes into contact with the stopper spring 49, so that the pawls 34, 34 are engaged with the first lock holes 29, 29 and the third lock holes 45', 45'. The brakes are applied just before the brakes meet. By further pushing the braked seat 1 forward against the urging force of the stopper spring 49, the claws 34, 34 are engaged with the first lock holes 29, 29 and the third lock holes 45', 45'. Then, move the seat 1 to the frontmost position and lock it. In the above-mentioned locked state, by tilting the seat bag 3 backward, the seat cushion 5, the seat bag 3, and the seat cushion of the rear seat of the seat 1 can be used on the same horizontal plane. The above lock can be released by rotating the seat slide lever 63 again.

In addition, the walk-in mechanism used to facilitate getting on and off the rear seat of the second row seat 1 is activated when the walk-in operation pedal 17 of the seat 1 in the normally seated state is operated. The operating lever 15 of the reclining adjuster 7, which is linked to the reclining adjuster 17, is operated, and the seat back 3 is folded forward. As the seat bag 3 is folded forward, the inner cable 73 is pulled, the connected release member 69 is rotated around the pin 67, and at the same time as the rotation, the wire 1 locked at the end is pulled. , the latch plate 33 latched to the other end of the wire 71 is rotated, the lock is released, and the seat 1 is automatically moved forward by the biasing force of the return spring 61. After the movement, the stopper bracket 51 comes into contact with the stopper spring 49 at the same time as when the full flat is used, and the pawls 34, 34 engage with the first lock holes 29, 29 and the third lock holes 45', 45'. The brakes are applied just before the train. When returning the seat 1 to the normal seating state after getting on and off the rear seat, raise the seat bag 3 that has been folded forward and return it to the rear so that the claws 34, 34 can lock into the first lock holes 29, 29 and the second lock hole 45. , 45 to lock the back and forth movement of the seat 1 in the normal seating position.

As is clear from the above, according to the above embodiment, the seat 1 moved forward by the return spring 61 of the walk-in mechanism is braked by the stopper spring 49 just before it is locked at the frontmost end. Since the movement of the seat is not locked when the seat back 3 is raised from the forward position when returning to the normal seating position, it is possible to return to the normal seating position while raising the seat back 3.
This has the effect of making it easier to return the sheet 1.

Further, according to the above embodiment, when the seat is used in a fully flat state, the entire seat 1 that has been moved forward is further pushed forward against the biasing force of the stopper spring 49, and the third lock holes 45', 45 are closed. Since the pawls 34, 34 can be engaged with the seats 1 and 34, the seat 1 can be reliably locked at the frontmost end with a simple operation, and a safe fully flat state can be obtained without the seat moving during driving. play.

In the above embodiment, an operating lever having the same function as the walk-in operating pedal 17 may be provided on the outer surface of the seat stand 9 or the outer surface of the seat back 3 and operated.

[Brief explanation of drawings]

Fig. 1 is an explanatory side view showing an embodiment of the present invention, Fig. 2 is an enlarged side view explanatory drawing showing an embodiment of the invention, and Fig. 3 is an enlarged view of main parts showing an embodiment of the invention. FIG. 4 is an enlarged sectional view of the main part taken along the line A-A in FIG. 3, and FIG. 5 is a plan view showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Seat, 3... Seat back, 11... Upper rail, 12... Lower rail, 21... Latch support body, 33... Latch plate, 39... Lock plate, 49... Stopper spring, 61... Return spring.

Claims (1)

[Scope of utility model registration request] A sliding mechanism that is fixed to the lower part of the seat cushion and the floor member to slidably support the seat, a normal seating range within the seat movement range by the sliding mechanism, and an uppermost seat located in front of the normal seating range. A locking mechanism that locks the sliding mechanism at the front end position, a reclining adjuster that connects the seat cushion and the seatback and releases the locking mechanism when the seatback is tilted forward, and a reclining adjuster that is attached in the direction of moving the seat forward. 1. A seat device comprising: a return spring that biases the seat; and a stopper member made of an elastic member that brakes the movement of the seat caused by the return spring immediately before the locking mechanism is activated at the frontmost position.