JPS6320363Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reclining device used for a vehicle seat, and particularly to a reclining device used for a foldable seat used in a wagon or the like.

Conventionally, a fixed arm that is fixed to the seat cushion and a movable arm that is fixed to the seat back are supported by a rotating shaft, a sector gear centered on the rotating shaft is fixed to one of the arms, and a sector gear that is centered on the rotating shaft is fixed to one of the arms, and a movable arm that is fixed to the seat back is supported by a rotating shaft. 2. Description of the Related Art Reclining devices, in which a latch gear that engages with a sector gear is rotatably or slidably attached to freely adjust the angle, are mainly used in passenger cars.

On the other hand, in recent years, attention has been paid to the space and spaciousness of one-box vehicles, and their use as leisure vehicles has been attracting attention from their traditional functions as commercial vehicles and cargo handling vehicles.The need for improved comfort and luxury has arisen, and seats have also become more popular. It is required to have a reclining function. On the other hand, these seats are also required to be able to be folded into a small size, and the reclining angle is required to be approximately 180 degrees from the position where the seat cushion and seat back are in close contact with each other to the fully reclined position.

In conventional reclining devices for passenger cars, this relative change angle is about 120 degrees at most, and if this is applied to a 180 degree variable seat, the sector gear's 1 position will change even if the sector gear is placed on either the fixed arm side or the movable arm side. The problem was that the parts of the vehicle were exposed to the inside of the vehicle, spoiling its aesthetic appearance, and the passengers' clothes and vehicle accessories were often covered with oil.

The present invention was devised to eliminate these drawbacks, and includes a fixed arm on the seat cushion side and a movable arm on the seat back side that are mutually supported around a rotating shaft, and one of the arms has a fixed arm that is centered around the rotating shaft. In a reclining device for a vehicle, a sector gear is fixedly attached to the other arm, and a latch gear that can be freely engaged with and detached from the sector gear is attached to the other arm, and the arm on the latch gear side is formed with a flange having a radius and height that encloses the sector gear. On the other hand, a cover having a flange having the same radius as the flange is attached to the sector gear side arm so as to face the flange of the latch gear side arm, thereby providing a reclining device with a large rotation angle without exposing the sector gear in the vehicle interior. This is what I am trying to do.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In Figs. 1 to 4, 1 is a fixed arm fixed to the side of the seat cushion S/C, and 2 is a movable arm fixed to the side of the seat cushion S/B, which is rotatably attached to the fixed arm 1 with a shaft 3. A spiral spring 4 is loaded across the end of the shaft 3 and the movable arm 2, and the movable arm 2 is biased with rotational force in the direction of tilting the seat backs S and B forward. 5
indicates an angle adjustment mechanism, and the angle adjustment mechanism 5 is composed of a sector gear 6 fixed to the outer surface of the fixed arm 1, and a latch gear 7 disposed on the back surface of the movable arm 2 so as to be freely engageable with and detachable from the sector gear 6. This latch gear 7 is held by guides 8 fixed to the movable arm 2 on both front and rear sides, and a pin 11 protruding from the lower end side of an intermediate lever 10 rotatably attached to the movable arm 2 by a shaft 9 is attached to the movable arm 2. It has an oblique arc-shaped hole 7a fitted therein, and is pulled up by rotating the intermediate lever 10 counterclockwise in FIG. 1 to release the mesh with the sector gear 6. The intermediate lever 10 has a spelling 12 loaded between its upper end and the movable arm 2, which applies a clockwise rotational force in FIG. It meshes with the Further, an operating lever 13 is attached to the end of the shaft 9 passing through the movable arm 2, and the operating lever 13 is used to engage and disengage the latch gear 7 from the sector gear 6. Here, a flange 20 that encloses the periphery of the sector gear 6 is integrally formed on the periphery of the movable arm 2, while a flange 22 that covers one side edge of the sector gear 6 is formed on the back surface of the fixed arm 1. A bend-molded resin cover 21 is closely fixed to the back of the arm with pins 23,
The flanges 20 and 22 cover not only the meshing portion between the sector gear 6 and the latch gear 7 but also the outer periphery of the sector gear 6. According to the above embodiment structure, the latch gear 7 is activated by operating the operating lever 13.
When the sector gear 6 and the latch gear 7 are pulled up, the meshing between the sector gear 6 and the latch gear 7 is disengaged, and the rotation of the movable arm 2 and therefore the tilting of the seat backs S and B are free, so the operating lever 13 is released at the appropriate tilting angle. Then, the sector gear 6 meshes with the latch gear 7 again, and the tilt angle is maintained. Here, movable arm 2
The flange 20 of the cover 21 includes the peripheral edge of the sector gear 6, and the flange 22 of the cover 21 encloses the periphery of the sector gear 6.
Since they face each other at the same radius as 0, the front and back are approximately
Even when rotated 180 degrees, the teeth of the sector gear 6 are not exposed, which improves the appearance and improves the appearance.
It is possible to avoid situations in which the clothes of the seated person come into contact with the sector gear 6 and become soiled, or get caught between the sector gear 6 and the latch gear 7. Moreover, in the case of the movable arm 2, the peripheral flange 2
0 molding also has the advantage of improving load-bearing performance.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is a rear perspective view of the same, FIG. 3 is an exploded perspective view of the same, and FIG. 4 is a sectional view taken along the - line of FIG. 2. 1... Fixed arm, 2... Movable arm, 3...
Shaft, 5... Angle adjustment mechanism, 6... Sector gear, 7
...Latch gear, 20...Movable arm flange, 21...Cover, 22...Cover flange, S/C...Seat cushion, S/B...Seat back.

Claims (1)

[Scope of utility model registration request] A fixed arm on the seat cushion side and a movable arm on the seat back side are mutually supported by a rotating shaft, a sector gear centered on the rotating shaft is fixed to one of the arms, and a sector gear that is connected to and disengages from the sector gear is fixed to one of the arms. In a vehicle reclining device equipped with a freely adjustable latch gear, the latch gear side arm is formed with a flange having a radius and height that encloses the sector gear, and the sector gear side arm has a flange with the same radius as the flange. A reclining device for a vehicle, characterized in that a cover having a cover is attached facing the flange of the latch gear side arm.