JPS6175027A - Front leaning type seat for vehicle - Google Patents

Abstract

PURPOSE:To obtain sufficient space for getting on and off to the door seat side by providing a lock member engaging with an engaging unit of the rear side of a seat cushion moving forward and backward and a lock releasing means of the lock member at the most forward position of the seat cushion. CONSTITUTION:A seat cushion 2 is supported by a movable rail 5 and a bent portion 27 on the tip of a seat frame 9 is rotatably supported by a rotating shaft 28 of the movable rail 5, and energized to the front leaning side by a winding spring S. An engaging shaft 29 is provided on the rear side face of the seat frame 9 and engaged with a hook 25 of a lock device of the movable rail 5. A projected end 25B of the hook is opposed to a lock releasing piece 6A of a floor panel, and when the seat cushion is slided to the most forward position, engagement of a fluke unit 25A of the hook 25 and the engaging shaft 29 is released.

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 bank forward in the forward position, an opening for getting in and out of the rear seat is secured. .

However, with this structure, the seat back simply tilts, so the seat cushion gets in the way, making it impossible to secure a sufficiently large opening, making it difficult to get in and out of the rear seat.

Furthermore, as shown in Japanese Utility Model Application Publication No. 57-105830, for example, 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.

<Objective of the Invention> The object of the present RaJ4 is to provide a forward-tilting seat device that can ensure sufficient loss of penis for getting on and off the rear seat side.

<Configuration of the Invention> In order to achieve the above object, the forward-tilting seat device for a vehicle according to the present 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, and a seat cushion that is rotatably supported at the tip of a movable rail. At the engaging part provided on the rear side of the cushion and at the rear end of the movable rail.

The seat cushion is characterized by comprising a locking member that fixes the seat cushion on the movable rail by engaging with the engaging portion, and a lock release means that unlocks the locking member at the most advanced position of the seat cushion.

<Embodiments of the Invention> FIG. 1 is a side view of a seat device according to the present invention, FIG. 2 is an enlarged vertical cross-sectional view of a main part, and FIG. 3 is a perspective view of a main part of FIG.

In the figure, a front seat 1 consists of a seat cushion 2 and a seat back 3. The seat back 3 is tiltable with respect to the seat cushion 2 via a reclining device 4. Further, the seat cushion 2 can be adjusted forward and backward by a seat adjuster device 8.

The seat adjuster device 8 includes a pair of fixed rails 7 attached in parallel to the floor panel 6, a movable rail 5 that is slidably fitted to the fixed rails 7, and fixes the movable rail 5 in a longitudinal sliding position. The seat cushion 2 is supported on a movable rail 5.

A bent portion 27 is bent downward at the tip of the seat frame 9 forming the seat cushion 2, and this bent portion 27 is pivotally supported by a pivot 28 supported by the movable rail 5.

A six-wound spring S is wound around the outer periphery of the pivot shaft 28. One end of the six-wound spring S contacts the frame 9, and the other end contacts the movable rail 5 side. As a result, the one-wound spring S causes the seat cushion 2 to pivot. 28 as a fulcrum, it is constantly biased toward the forward leaning side as shown by the imaginary line.

Further, an engagement shaft 29 is provided on the rear side surface of the seat frame 9, and this engagement shaft 29 engages with a hook 25 of a locking device provided on the movable rail 5 side, thereby movable the seat cushion 2. It is held on rail 5.

The locking device includes a bracket 19 attached to the rear upper wall of the movable rail 5, a shaft 23 pivotally supported on both side walls of the bracket 19, a coil spring 26 wound around the outer periphery of the shaft 23, and a shaft 23. It consists of the aforementioned hook 25 which is swingably supported at the base point.

One end of the coil spring 26 is hooked to the hook 25, thereby constantly urging the hook 25 to tilt backward, and the hook portion 25a provided at the upper end of the hook 25 is connected to the above-mentioned engagement shaft 29.
is engaged in.

The lower end of the hook 25 passes through an elongated hole 24 opened at the bottom of the bracket 19 and projects to the bottom of the bracket.

This protruding end 25B faces the lock release piece 6A provided on the floor panel 6, and when the seat cushion 2 is slid to the frontmost position, the protrusion end 25B collides with the lock release piece 6A, causing the hook 25 to rebound. The hook portion 25A is rotated clockwise, thereby disengaging the hook portion 25A from the engagement shaft 29.

Therefore, in the seat device having the above configuration, the seat cushion 2 is reliably held on the movable rail 5 in the normal state.

In addition, in order to secure an opening for getting on and off to the rear seat side, 2
When the locking mechanism of the seat adjuster device is unlatched and the seat cushion 2 is positioned at the forefront, the hook 25 is unlatched and the seat cushion 2 is automatically tilted counterclockwise. This makes it possible to secure access to the rear seats.

After getting on and off, the seat 1 is moved against the biasing pressure of the coiled spring S.
Return to normal position and pull seat 1 slightly backwards, then hook 2
5 is engaged with the engagement shaft 29, and the seat cushion 2 is securely held on the movable rail 5 again.

<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 to the rear seat side can be secured.

Furthermore, if the seat is configured to automatically tilt forward at the frontmost position as in the embodiment, it is only necessary to operate the seat adjustment device, resulting in improved operability.

[Brief explanation of drawings]

FIG. 1 is a side view of the seat device according to the present invention, FIG. 2 is an enlarged vertical sectional view of the main part thereof, and FIG. 3 is a perspective view of the main part of FIG. 2. 1... Seat, 2... Seat cushion, 3...
Seat back, 5... movable rail, 6... floor panel. 6A...Lock release piece (lock release means), 7...Fixed rail, 8...Seat adjuster device, 25...
Hook (locking device), 25A... hook portion, 29...
engagement shaft.

Claims (1)

[Claims] A seat cushion that is rotatably supported by 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 forward-tilting type vehicle comprising: a locking member that fixes a seat cushion on a movable rail by engaging with the lock member; and a lock release means that unlocks the locking member when the seat cushion is in the most forward position. seat equipment.