JPH0542911Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a vehicle seat in which the seat can be moved forward in order to facilitate getting on and off the seat.

“Conventional technology” For example, as a conventional vehicle seat,
There is one disclosed in Publication No. 63-162346.

That is, a seat slide device is provided at the installation location, and the seat cushion can be displaced between a normal position and a forward walk-in position via a front link member and a rear link member, respectively, on the rail on the seat side of the seat slide device. The rear link member constitutes a base member of the reclining device, and a seat back is supported by the rear link member via an arm member so as to be adjustable in tilt angle.

When the walk-in operation is performed, the front link member and the rear link member each swing, and the seat cushion moves forward and flips up to the walk-in position, and the rear link member swings. The arm member and the seat back are integrally tilted, and the seat back is swung to a forward tilted position.

``Problem to be solved by the invention'' However, in such conventional vehicle seats, in the walk-in position, the seat cushion is supported only by the front link member and the rear link member, and does not bounce up from the rail on the seat side. Due to the unstable state of the seat cushion, it was not possible to place heavy items on the seat cushion in the walk-in position, making it inconvenient to use.

The present invention was developed by focusing on these conventional problems, and aims to provide an extremely user-friendly vehicle seat that can effectively utilize the seat cushion even in the walk-in position. There is.

``Means for Solving the Problems'' The gist of the present invention to achieve this purpose is: 1. A vehicle seat in which the seat is moved forward to facilitate getting on and off the seat, etc. At the installation location, the seat cushion is mounted so as to be movable back and forth via a seat slide device comprising a rail on the vehicle body side and a rail on the seat side that fits into the rail on the vehicle body side so that it can be inserted relatively. and a front link member that connects the seat-side rail and the seat cushion at a front position, and a front link member that connects the seat-side rail and the seat cushion at a rear position. A parallel link mechanism is formed by the connecting rear link members, and the parallel link mechanism allows the seat cushion to be placed on the rail on the seat side in a normal position with each link member folded forward, and the normal position where each link member is folded forward and the seat cushion is placed on the rail on the seat side. The seat cushion is movably supported forward from the normal position to a walk-in position where the seat cushion is placed on the rail on the seat side, and the seat back is attached to the seat cushion in a normal upright position and a forward tilted position. A support member that supports the seat back is pivotally supported to be pivotable about a connecting shaft that is a connecting portion between the seat cushion and the rear link member, so that the seat cushion is tiltably supported. A vehicle seat characterized by comprising a restraining member capable of restraining the support member to a rail on the seat side so as to hold the seat bag in the normal position and to hold the seat back in the upright position.

2. The vehicle seat according to item 1, wherein the seat cushion is biased in a direction to swing to the walk-in position, and the seat back is biased in a direction to swing to the forward tilted position. .

"Operation" The seat cushion is in the normal position, the seat back is in the upright position, and the support member is restrained by the restraining member to the rail on the seat side, thereby restraining the seat cushion and the seat cushion in each of the above positions. has been done. Each link member is tilted backwards, and the seat cushion is placed directly on a rail on the seat side, so that the load applied to the link member is small.

When the restraint member is operated to release the support member from the seat-side rail, the support member becomes swingable about the connection shaft, and thereby the rear link member also becomes swingable.

When the front link member and the rear link member are respectively rocked, the seat cushion is displaced from the normal position to the walk-in position. Similarly, when the support member is rocked, the seat back swings from the upright position to the forward tilted position.

Even in this state, each link member is tilted forward and the seat cushion is placed on the rail on the seat side, so that the load applied to the link member is small and the seat cushion can withstand a large load.

In order to return the seat cushion from the walk-in position to the normal position and return the seat back from the forward tilted position to the upright position, the front link member and the rear link member are respectively swung to return the seat cushion to the normal position, Swing the support member to bring the seat back to the upright position.

Next, when the restraint member is operated to restrain the support member to the rail on the seat side, the seat cushion is restrained in the normal position and the seat bag is restrained in the upright position.

“Embodiment” An embodiment of the present invention will be described below based on the drawings.

1 to 3 show an embodiment of the present invention.

As shown in FIGS. 1 and 3, a seat slide device 20 is installed on the vehicle body floor 10, which is the installation location.
is installed. The seat slide device 20 is
Rail 21 on the vehicle body side fixed to the vehicle body floor 10
and a seat-side rail 22 that fits into the vehicle body-side rail 21 so as to be movable back and forth and supports the seat cushion 30.

Seat cushion 3 is installed on the rail 22 on the seat side.
0 is swingably mounted via a pair of parallel link mechanisms 40 between a normal position shown in FIG. 3 and a walk-in position shown in FIG. 2 which is located in front of the normal position.

The pair of parallel link mechanisms 40 are configured symmetrically, and hereinafter, one parallel link mechanism 40 will be mainly explained, and the other parallel link mechanism 40 will be explained instead.

The parallel link mechanism 40 is connected to the rail 22 on the seat side.
and the lower part of the seat cushion 30, and the rail 2 on the seat side in the normal position and the walk-in position.
2, a front link member 41 that connects the seat-side rail 22 and the frame member at the front position via the front connecting shaft 47, and a seat-side rail also at the rear position. 22
and a rear link member 42 that connects the frame member and the frame member via a rear connecting shaft 48.

A spring member 44 is wound around a connecting pin 43 that connects the seat-side rail 22 and the front link member 41, and the spring member 44 causes the front link member 41 to move counterclockwise in FIG. 3 around the connecting pin 43. is biased in the direction.

Similarly, the rail 22 on the seat side and the rear link member 4
A spring member 46 is wound around a connecting pin 45 that connects the two. The spring member 46 biases the rear link member 42 counterclockwise in FIG. 3 with the connecting pin 45 as the center.

A front connecting shaft 47 spans both front link members 41 and is rotatably supported. Similarly, a rear connecting shaft 48 is spanned over both rear link members 42 and is rotatably supported.

A seat back 35 is supported on the rear connecting shaft 48 via a reclining mechanism 50, which is a support member, so that the tilting angle can be adjusted.

The reclining mechanism 50 includes a base member 51 whose front end is pivotably supported on the rear connecting shaft 48.
and an arm member 55 that is swingably supported by the base member 51 and supports the seat bag 35. The base members 51 are biased counterclockwise in FIG. 3 about the rear connecting shaft 48 by the torsion members 53 installed on both base members 51.

Support brackets 25 are fixed to the side walls of the rails 22 on both seat sides, and an operating shaft 60 is rotatably mounted on each support bracket 25.

Both ends 61 of the operating shaft 60 extend to a position facing the lower edge of the rear end of the base member 51. Operation axis 6
Both ends 61 of the 0 can be engaged with pin members 54 implanted in the base member 51 to restrain the base member 51 to the rail 22 on the seat side when the restraint member 70 swings about the operating shaft 60. , and a removable restraint member 70 is fixed to the pin member 54 to release the restraint of the base member 51 from the rail 22 on the seat side.

In order to engage the restraining member 70 with the pin member 54, the operating shaft 60 is biased counterclockwise in FIG.

An operating pedal 65 is fixed to the operating shaft 60 and is capable of swinging the restraining member 70 from a restraining position to a restraining release position against a biasing force.

In FIG. 3, the seat cushion 30 is in the normal position, the seat bag 35 is in the upright position, and the distal end of the restraint member 70 is engaged with the pin member 54. As a result, the base member 51 is restrained by the rail 22 on the seat side, and the reclining mechanism 5
0, the seat bag 35 is restrained in that position, and the rear link member 42 is restrained so that it cannot swing, and the seat cushion 30 is restrained in that position.

When the restraining member 70 is swung clockwise in FIG. 3 about the operating shaft 60 against the urging force by the operating pedal 65, the tip of the restraining member 70 is disengaged from the pin member 54.

When the distal end of the restraining member 70 comes off the pin member 54, the front link member 41 and the rear link member 42 move counterclockwise in FIG. sway to. As a result, the frame member (not shown) moves forward and rises from the rail 22 on the seat side.

When the front link member 41 and the rear link member 42 further swing in the same direction, the frame member moves forward, approaches the seat-side rail 22, and is eventually placed thereon. Seat cushion 30 before and after
is displaced to the walk-in position.

Furthermore, when the distal end of the restraining member 70 comes off the pin member 54, the base member 51 swings counterclockwise in FIG. 3 about the rear connecting shaft 48 due to the biasing force of the torsion member 53. As a result, the arm member 55 and the seat back 35 integrally swing counterclockwise in FIG. 3 about the rear connecting shaft 48, and the seat back 35 swings from the upright position to the forward tilted position shown in FIG. move.

The rocking of the seat bag 35 is performed in parallel with the displacement of the seat cushion 30 described above.

In the walk-in position shown in FIG. 2, the frame member is placed on the seat-side rail 22, and even if a large load is applied to the seat cushion 30, the load is borne by the entire seat-side rail 22. It can sufficiently withstand that load.

In order to return the seat cushion 30 from the walk-in position to the normal position and the seat back 35 from the forward tilted position to the standing position, move the seat cushion 30 backward while lifting it up, and raise the seat back 35. good.

As a result, the front link member 41 moves to the spring member 44.
The rear link member 42 swings clockwise in FIG.
It swings clockwise in FIG. 2 around . In parallel with this, the base member 51 swings clockwise in FIG. 2 about the rear connecting shaft 48 against the biasing force of the torsion member 53.

The frame member is again placed on the seat-side rail 22 while being displaced rearward, and the seat cushion 30 returns to its normal position after moving back and forth. The seat bag 35 also returns to the upright position by moving back and forth.

Next, when you remove your foot from the operating pedal 65, the operating shaft 60 rotates clockwise in FIG. The seat cushion 30 is engaged with the pin member 54, and the seat cushion 30 is restrained in the normal position, and the seat bag 35 is restrained in the upright position, returning the entire body to the state shown in FIG.

According to the vehicle seat according to the embodiment, when the cushion restraint member 70 and the back restraint member 80 are swung to the restraint release position by the operating pedal 65, the seat cushion 30 is displaced to the walk-in position by the biasing force, and , seat back 3
5 swings to the forward tilted position, so the walk-in operation can be performed extremely easily.

"Effect of the invention" According to the vehicle seat according to the invention, the seat cushion is placed on the rail on the seat side of the seat slide device at the walk-in position, which is forward of the normal position. ,
When displaced to the walk-in position, the seat cushion is supported by the rail on the seat side and can withstand a large load. Even in the walk-in position, heavy items can be placed on the seat cushion. Walk-in operation can be performed simply by swinging the restraint member, making it extremely easy to use. The link member changes to the forward or backward position, and the seat cushion is always in a low position when it is stationary, so the overall height of the seat does not increase, including during walk-in operation, making it difficult to hit the ceiling and reducing the head height. Easy to handle as there is no need to consider clearance.

[Brief explanation of the drawing]

Each figure shows an embodiment of the present invention, and FIG. 1 is a perspective view of the main parts of a vehicle seat, FIG.
The figure is also a side view. 10...Vehicle body floor (installation location), 20...Seat slide device, 21...Vehicle body side rail, 2
2... Seat side rail, 30... Seat cushion, 35... Seat back, 40... Parallel link mechanism, 41... Front link member, 42... Rear link member, 50... Reclining mechanism (support member) , 60... operation shaft, 70... restraint member.

Claims (1)

[Scope of claim for utility model registration] (1) In a vehicle seat in which the seat is moved forward in order to facilitate getting on and off from the rear of the seat, a rail on the vehicle body side and a rail on the vehicle body side are installed at the installation location. The seat cushion is mounted so as to be movable back and forth via a seat slide device comprising a seat-side rail that fits into the rail so that it can be inserted into the rail, and the seat cushion is connected to the seat-side rail, the seat cushion, and the front side. A parallel link mechanism is configured by a front link member that connects the seat-side rail and the seat cushion at a position, and a rear link member that connects the seat-side rail and the seat cushion at a rear position, and Due to the parallel link mechanism, there is a normal position where each link member is folded back and the seat cushion is placed on the rail on the seat side, and a normal position where each link member is folded forward and the seat cushion is placed on the seat side in front of the normal position. a support that supports the seat back so as to be movable between a walk-in position and a walk-in position placed on the rail of the seat cushion; The member is swingably supported around a connecting shaft that is a connecting portion between the seat cushion and the rear link member, and the seat cushion is held in the normal position and the seat back is held in the upright position. A vehicle seat comprising a restraining member capable of restraining the support member to a rail on the seat side. (2) The seat cushion for a vehicle according to claim 1, wherein the seat cushion is biased in a direction to swing to the walk-in position, and the seat back is biased in a direction to swing to the forward tilted position. sheet.