JPH0221303Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field of the Invention> The present invention relates to a vehicle seat, and particularly to a forward-tilting seat device that tilts and moves a seat cushion forward.

<Prior art and its problems> In general, the front seat of a two-door car can be slid back and forth, and by tilting the seat back forward in the forward position, an opening for getting in and out of the rear seat is secured.

However, with this structure, since the seat back simply tilts, the seat cushion gets in the way, making it impossible to secure a sufficiently large opening, making it troublesome to get on and off the rear seat.

Furthermore, as shown in, for example, Japanese Utility Model Application No. 57-105830, there is also a seat device in which the entire front seat is tilted forward by rotating the seat cushion forward. However, even with this structure, it cannot be said that the ease of getting in and out of the vehicle has been improved because the seat folded forward occupies approximately half of the opening surface of the front door.

<Purpose of the invention> The object of the invention is to provide a forward-tilting seat device that can secure sufficient entrance/exit space to the rear seat side.

<Structure of the invention> In order to achieve the above object, the forward-tilting seat device for a vehicle according to the invention includes a seat cushion that is rotatably supported at the tip of a movable rail and moves forward and backward together with the movable rail; An engaging part provided on the rear side of the seat cushion, a locking member located at the rear end of the movable rail that fixes the seat cushion on the movable rail by engaging with the engaging part, and a lock member provided on the rear end of the movable rail. The lock member is provided with a guide rail for guiding the lock member while holding it in the engagement position as the seat cushion slides, and for releasing the lock by tilting the lock member at the most advanced position of the seat cushion and removing it from the engagement portion. It is characterized by

<Example of the invention> Fig. 1 is an exploded perspective view of a seat device according to the invention;
FIG. 2 is a side view showing the assembled state, and FIG. 3 is a side view showing the operating state.

In the figure, 10 is a fixed rail attached to the front panel F via a bracket 12;
Reference numeral 4 denotes a movable rail that fits into the fixed rail 10 in an uneven manner and slides in the front and rear direction.

A seat frame 16 is mounted on the upper part of the movable rail 14.
will be installed. The seat frame 16 is made up of a cushion frame 18 and a back frame 22 attached via brackets 20 fixed to both rear sides of the cushion frame 18.

The back frame 22 is a wire frame 22A
and side frames 22B fixed to both sides of the wire frame 22A by welding or the like.

One side frame 22B is directly supported on the bracket 20 by screws B1. Further, the other side frame 22B is fixed to the pivot arm 24 of the reclining device 24 via screws B3. And this reclining device 24
is fixed to the bracket 20 via a screw B2, and by operating an operating lever 24B protruding from the tip of the device 24, the seat back can be tilted back and forth.

Cushion frame 1 configured as above
A seat cushion 180 and a seat back 220 made of padding and upholstery are respectively assembled on the seat cushion 8 and the back frame 22 to complete the seat.

The distal end of the cushion frame 18 is pivotably supported by the distal end of the movable rail 14.

That is, a bracket 26 is fixed to the tip of the movable frame 14, and this bracket 26
is engaged with the cushion frame 18, and the pivot shaft 30 is engaged with the cushion frame 18.
By passing the cushion frame 18 through the movable rail 14, the cushion frame 18 rotates around the pivot shaft 30 at the tip of the movable rail 14. A coiled spring 28 is inserted into the bracket 26 at the outer periphery of the pivot shaft 30, and one end of the coil spring 28 is in contact with the movable rail 14 and the other end is in contact with the bottom of the cushion frame 18, so that the cushion frame 18 is always maintained. It is biased toward the forward leaning side.

A shaft 32 is fixed to the rear part of the cushion frame 18. By locking a hook 36 provided on the movable frame 14 side to this shaft 32, the cushion frame 18 is fixed horizontally on the movable rail 14.

The hook 36 is a fixed rod 40 supported by a pair of brackets 38 provided at the rear of the movable rail 14.
and the movable rail 1 at the bottom of the fixed rod 40.
4 and is held by a guide rail 44 provided in parallel with 4.

The guide rail 44 is held by a pair of support plates 42 provided at the front and rear of the fixed rail 10, and has an elongated guide hole 46 formed in the center thereof. Furthermore, a rising portion 46A is formed on the tip side of the guide rail 44, rising at a predetermined angle.
The lower part of the hook 36 is engaged with the guide hole 46 via a bearing 48, and in the normal position shown by the solid line in FIG. state, and the shaft 32 is locked.

Note that a guide plate 49 constituting a seat adjuster (a mechanism for adjusting the seat to a longitudinal sliding position) is provided on the inner side of one of the fixed rails 10.
are arranged along the front-rear direction, and guide holes 49A are bored in a row.

This guide hole 49A is used to sequentially engage with a latch 50 of a seat adjuster provided on the side of the movable rail 14 to fix the movable rail 14 at the adjusted position. Latch 50 is connected via wire 52 to a lock release lever, not shown.

The latch 50 is also connected to the reclining device 24, and the latch 50 is released when the seat bag 220 is completely tilted forward by operating the reclining device 24.

The guide plate 49 extends toward the distal end side of the movable rail 14. A positioning block 54 for regulating the forward position of the movable rail 14 is disposed at its extended end. When the latch plate 50 comes into contact with this positioning block 54, the forward position of the movable rail 14 with respect to the fixed rail 10 is regulated.

The positioning block 54 is pivotally supported by a bracket 54 provided on the fixed rail 10 via a pin.
Moreover, it is normally biased toward the closed position by a coiled spring 56. A release wire 58 is engaged with the pivot end. This release wire 58
is interlocked with the reclining device 24, and by operating the reclining device 24 and tilting the seat back 220 forward, it rotates in the direction of arrow [b] (see Fig. 1), thereby regulating the forward position of the movable rail 14. unlock.

Therefore, in the seat device having the above configuration, the seat cushion 180 is connected to the movable rail 14 in the normal state.
securely held on top.

Further, in order to secure an opening for getting on and off the rear seat side, if the operating lever 24B of the reclining device 24 is operated and the seat back 220 is tilted forward, the latch plate 50 is pulled toward the arrow [A] side in FIG. When the latch is released, the movable rail 14 slides on the fixed rail 10 in a free state, or is automatically moved to the forward position by a spring or the like (not shown). At the same time, the positioning block 50 falls in the direction of the arrow [b] in FIG. 1, allowing the movable rail 14 to move to the forefront.

Then, when the movable rail 14 moves forward as shown by the arrow [c], the hook 36 moves as shown in FIG.
moves along the guide hole 46 and is held in a vertical position by the fixing rod 40. And the rising part 46A
By moving to the side, the hook 36 is tilted forward due to its position relative to the fixed rod 40 and the shaft 3
It is removed from 2.

As a result of this hanging and unhooking, the seat frame 18 uses the pivot shaft 30 as the starting point of rotation, and springs up as shown by the imaginary line in FIG. 2 by the spring pressure of the coiled spring 28.

The above operations ensure that passengers can get on and off the rear seat side.

Furthermore, after getting on and off, the seat is returned to its normal state against the biasing pressure of the coiled spring 28, and by pulling the seat slightly backward, the hook 36 is reattached to the pivot shaft 32.
, thereby reliably holding the sheet on the movable rail 14 again.

In addition, in the embodiment, if the remote control lever of the reclining device is provided on the opposite side, the operation can be performed from the surface side of the seat, making it more convenient.

<Effects of the invention> As explained above in the embodiments, in this invention, the entire seat is tilted forward when the seat is moved to the frontmost position, so that a larger entrance for getting in and out of the rear seat can be secured.

Furthermore, if the seat is configured to automatically tilt forward at the front end as in the embodiment, it is sufficient to simply operate the reclining device, resulting in good operability.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the seat device according to this invention, FIG. 2 is a side view showing the assembled state, and FIG. 3 is a side view illustrating the action of hooking and removing the hook. 10...Fixed rail, 14...Movable rail, 1
8...Cushion frame, 22...Back frame, 30...Pivot shaft, 32...Shaft, 36...Hook (lock member), 44...Guide rail, 4
6... Guide hole, 180... Seat cushion,
220... Seat bag.

Claims (1)

[Scope of utility model registration request] A seat cushion is rotatably supported on the tip of the movable rail and moves forward and backward together with the movable rail, an engaging portion provided on the rear side of the seat cushion, and an engaging portion provided at the rear end of the movable rail. A lock member that fixes the seat cushion on the movable rail by engaging with the mating portion, and a lock member that guides the lock member while holding the lock member in the engaged position as the movable rail slides, and moves the seat cushion to the furthest forward position. 1. A forward-tilting seat device for a vehicle, comprising a guide rail for releasing the lock by tilting the locking member at a certain position and removing the locking member from the engaging portion.