JPH0121055Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an armrest, and more specifically, to an armrest for a seat of an automobile, etc., in which the seat back is formed to be tiltable forward.

For automobile seats, there is a demand for a seat that can be automatically moved to a storage position, that is, a position along the side of the seat back, so that the armrest body does not get in the way when the seat back is tilted forward and when getting on and off the seat.

The purpose of the present invention is to provide an armrest in which the armrest body can be immediately and automatically set in its storage position by tilting the seat back forward, and the armrest body can be easily returned to the use position. It will become clear from the detailed description with reference to it.

1 and 2 schematically show an embodiment of the armrest according to the present invention, in which a reclining mechanism 1 fixed to the seat cushion side is shown.
An arm 3 is rotatably supported on a base 2, and can be rotatably held within an appropriate rotation range by an angle adjustment and locking mechanism (not shown). A seat back frame 4 is fixed to the arm 3, and an armrest main body 5 is attached to the seat back frame 4.

As shown in FIGS. 3 and 4, the armrest main body 5 is attached to a pivot shaft 7 that passes through a bracket 6 fixed to the seat back frame 4, and a stopper 8 is fixed to the inner end of the pivot shaft 7. This stopper 8 is formed with an arc-shaped long groove 9 whose radius is centered at the center of the pivot shaft 7. The bracket 6 is provided with a lock pin 11, which is fitted into the long groove 9 of the stopper 8 and projects from the inner end surface of the stopper 8. Also, a set screw 12 is attached to the inner end surface of the pivot shaft 7.
A fan-shaped spring 13 is attached, and this fan-shaped spring 13 is made of a leaf spring material, and slopes 13a and 13b, which are locking parts connected to the locking pin 11, are formed at both ends of the central angle, respectively.

The locking mechanism of the above embodiment is such that when the armrest main body 5 is rotated from the stored position along the side of the seat back toward the use position as shown by arrow a in FIG. The stopper 8 rotates together with the stopper 8 via the stopper 7, and the fan-shaped spring 13 rotates together with the stopper 8 while being gradually pushed up by the lock pin 11 at the position of the slope 13a. When the armrest main body 5 is rotated to the use position, the slope 13b of the fan-shaped spring 13 advances to the position of the lock pin 11, the pushing up force of the lock pin 11 is released, a sense of moderation is given, and the contact between the lock pin 11 and the slope 13b A resistance force is generated against the rotational force of the armrest main body 5 in the direction opposite to the direction of the arrow a, and the armrest main body 5 is locked in the use position. When the armrest main body 5 is rotated from the use position to the storage position, the fan-shaped spring 13 and the stopper 8 rotate together in the same manner as described above, and the armrest main body 5 is locked in the storage position by contact between the lock pin 11 and the slope 13a. be done. Note that the locking mechanism described above is one embodiment, and the locking pin 11 and stopper 8 configuration can be reversed, and the main point is to hold the armrest main body 5 with a sense of moderation between the use position and the storage position. Any configuration is sufficient.

Further, as shown in FIGS. 1 and 2, a link 15 is fixed to the pivot shaft 7, and one end of a wire 16 is connected to the tip of the link 15.
The other end is connected to the base 2 side of the reclining mechanism 1.

The wire 16 is connected to the armrest body 5 when the seatback frame 4 shown in FIG. It can be moved, but
When the seat back is tilted forward, the arm 3 of the reclining mechanism 1 moves in a direction away from the connecting portion 17 of the wire 16 as shown in FIG. 2, so that the wire 16 moves in the direction shown by arrow b in FIG. When the link 15 is pulled, the link 15 rotates in the counterclockwise direction shown by the arrow c in FIG.
a advances to the position of lock pin 11, and lock pin 1
1 and the slope 13a, the armrest main body 5 is locked in the storage position.

If the seat back is moved from this state to the normal use state, the armrest main body 5 will remain locked in the storage position and rotate together with the seat back, and when the armrest main body 5 is used in this state, the above-mentioned procedure will be performed. Similarly, the armrest main body 5 is rotated, and the slope 13a of the fan-shaped spring 13 and the lock pin 1 are rotated.
The armrest body 5 can be held in the use position by releasing the locked state caused by the contact with the lock pin 11 and forming the locked state caused by the contact between the slope 13b of the fan-shaped spring 13 and the lock pin 11.

In the above embodiment, the link 15 connecting the wire 16 is fixed to the pivot shaft 7, but the link 15 is attached to the armrest main body 5.
For example, the wire 16 may be fixed to a member that rotates integrally with the armrest body 5, such as the stopper 8 or the fan-shaped spring 13, or the wire 16 may be directly connected to these members. .

The above is the configuration of one embodiment of the armrest according to the present invention. According to this configuration, simply by tilting the seat back forward, one end is connected to the armrest main body side and the other end is connected to the base side of the reclining mechanism. The wire rotates the armrest body, allowing the armrest body to be quickly moved and held, eliminating the need to manually move the armrest body to the storage position each time the seatback is tilted forward or when getting in or out of a vehicle. You can get armrests.

[Brief explanation of the drawing]

FIGS. 1 and 2 show an embodiment of the armrest according to the present invention, and are schematic side views of the armrest in the use position and storage position,
FIG. 3 is an explanatory front view, and FIG. 4 is a schematic perspective view of the locking mechanism. In the figure, 1... Reclining mechanism, 2... Base, 3... Arm, 4... Seat back frame, 5... Armrest body, 6... Bracket, 7... Pivot shaft, 8... Stopper, 11 ... Lock pin, 13 ... Fan-shaped spring, 15 ... Link,
16...Wire.

Claims (1)

[Claims for Utility Model Registration] (1) An armrest main body is rotatably attached to a seat back frame via a pivot shaft, and a locking mechanism is provided that can lock the armrest main body in a use position and a storage position, respectively. A link projecting rearward is provided at the rear end of the armrest main body, one end of a wire is connected to the link, and the other end of the wire is connected to a base side of a reclining mechanism, so that the wire is pulled when the seat back is tilted forward. . An armrest characterized in that the armrest main body is automatically rotated from a use position to a storage position, and is locked by the locking mechanism in the storage position. (2) The locking mechanism includes a locking pin provided on either the armrest main body or a fixing member on the seat back side, and a fan-shaped spring provided on the other side having locking portions connected to the locking pin at both ends of the center angle. An armrest according to claim 1 of the utility model registration claim, characterized in that the armrest comprises: