JPS624027Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an armrest, and particularly to an armrest suitable for a reclining seat.

Conventionally commonly used armrests for seats are not provided with an angle adjustment mechanism, and in the case of a reclining seat, when the seat back 2 is folded down, the armrest 3 changes as shown by the dotted chain line, as shown in FIG. It had the disadvantage that it was tilted upwards, making it difficult to use. Note that the reference numeral 1 in FIG. 1 indicates a seat cushion.

Therefore, conventionally, as shown in FIG. 2, a link mechanism 4 is provided between the seat cushion 1 and the armrest 3.
It has been proposed that the armrest 3 is horizontal when the seat back 2 is folded down.
The disadvantage is that the scope of use is narrowed.

The purpose of the present invention is to eliminate the drawbacks of the prior art and provide an armrest that can be adjusted to any angle, does not interfere with the use of the seat, and is easy to attach to the seat back.See the drawings below. It will become clear from the detailed explanation below.

3, 4, and 5 show an embodiment of the present invention, in which a shaft 5 as a fixed shaft protrudes from the side of the seat bag 2, and a hollow armrest main body 6 is attached to the shaft 5. is rotatably supported, and an angle adjustment mechanism is provided inside the armrest main body 6.

The angle adjustment mechanism includes a groove wheel 7 for locking,
7', a lock pin 9, and a locking/unhooking means. Each groove wheel 7, 7' has a plurality of grooves 8 formed at intervals in the circumferential direction, and the groove wheels 7, 7' are arranged at intervals in the axial direction inside the armrest main body 6. are arranged in parallel and fixed to the shaft 5. The lock pin 9 is disposed parallel to the shaft 5 and is attached so as to be movable in a direction perpendicular to the axial direction along guide grooves 10 formed on both side walls of the armrest main body 6. The groove wheels 7, 7' are biased in the direction of engagement with the grooves 8 of the groove wheels 7, 7'. The above-mentioned hanging/unhooking means is a handle portion 1
A wire 14 connects the lever portion 12'' of the knob 12, which has a lever portion 12'' and a lever portion 12'' and is rotatably supported on the tip of the armrest body 6 via a pin 13, to the lock pin 9. It is constructed by connecting.

Next, FIGS. 6 and 7 show an armrest main body 6 having an angle adjustment mechanism inside, and a seat back 2.
An example of a combination structure is shown below.

In this embodiment, one half 5' of the shaft 5 is formed into a square shape when viewed from the side, and an uneven portion 15 is provided on one surface of the one half 5'.

On the other hand, a rectangular bracket 16 larger than the outer diameter of one half 5' of the shaft 5 is inserted and fixed inward from one side of the seat bag 2, and is fixed to the outer end surface of the bracket 16. A flange 17 is attached as a stopper.

Further, inside the bracket 16, one half 5' of the shaft 5 is made of a rubber elastic material.
A holder 18 formed in a shape corresponding to the above is inserted into the holder 18 .

One half 5' of the shaft 5 is press-fitted into the holder 18 that is inserted into the bracket 16, and each of the angle adjustment mechanisms that constitute the angle adjustment mechanism is installed inside the armrest main body 6 through this connection structure. After the members are assembled, the armrest main body 6 can be attached to the seat back 2 without being pulled out.

In the above embodiment, the shape of the half portion 5' of the shaft 5, the holder 18, and the bracket 16 when viewed from the side is not limited to the square shape shown in the drawings, but may be any non-circular shape.

In the armrest of the above embodiment, the knob 12 of the operating means of the angle adjustment mechanism is rotated in the direction of arrow a in FIG. 5, and the lock pin 9 is pulled through the wire 14 against the spring force of the tension spring 11. After removing the locking pin 9 from the groove 8 of the locking groove wheel 7, 7', move the armrest main body 6 to the direction indicated by the arrow b in FIG.
When the knob 12 is rotated around the shaft 5 in this direction or in the opposite direction and the knob 12 is released at an arbitrary position, the lock pin 9 is engaged with the groove 8 of the groove wheel 7, 7' by the action of the tension spring 11. Then, the armrest main body 6 is locked in the adjusted angular position.

Therefore, after tilting the seat back 2 in the reclining seat, the armrest body 6 is adjusted to a horizontal state suitable for use via the angle adjustment mechanism built into the armrest body 6,
can be used.

Moreover, since each member constituting the angle adjustment mechanism is incorporated inside the armrest main body 6,
There is nothing that gets in the way when using the seat, and the armrest main body 6 incorporating the angle adjustment mechanism can be attached to the seat back 2 all at once via the connection structure shown in FIGS. 6 and 7. .

The members constituting the angle adjustment mechanism are not limited to those in the illustrated embodiment, and may have any structure as long as they are built into the armrest main body 6 and can lock the armrest main body 6 at any angular position.

The above is the configuration of an embodiment of the armrest according to the present invention. According to this configuration, when the seat back is tilted in a reclining seat, the angle adjustment mechanism adjusts the armrest to an angle suitable for horizontal use, and It has the effect of holding it in place.

Furthermore, according to the present invention, since the angle adjustment mechanism is provided inside the armrest body, it does not get in the way when using the seat, and the armrest body and angle adjustment mechanism can be attached to the seat back all at once, making it easy to use. It also has the effect of being able to be assembled.

It should be noted that the above description merely shows one embodiment of the present invention, and it will be obvious that various modifications and changes can be made without departing from the spirit of the present invention.

[Brief explanation of the drawing]

FIGS. 1 and 2 are explanatory diagrams of the conventional armrest and seat in use, respectively, FIGS. 3 to 5 show an embodiment of the present invention, and FIG. 3 is a perspective view of the conventional armrest and seat in use; Figure 4 is a perspective view of the armrest main body with the top surface cut out, as seen from the top side;
FIG. 5 is an explanatory view of the operation, and FIGS. 6 and 7 are a sectional view and an exploded perspective view of the joint structure portion of the armrest, respectively. In the figure, 2... Seat back, 5... Shaft for armrest installation, 6... Armrest body,
7, 7'... Groove wheel of the angle adjustment mechanism, 8... Groove of the groove wheel, 9... Lock pin, 11... Lock pin tension spring, 12... Knob, 14... Connecting the lock pin and knob. wire.

Claims (1)

[Scope of utility model registration request] In the armrest, the armrest body is rotatably attached to a fixed shaft protruding from the side of the seat back, and an angle adjustment mechanism is incorporated inside the armrest body. a lock pin that engages the groove of the groove wheel at any rotation angle of the groove wheel;
The lock pin and the groove wheel are configured to have means for engaging and disengaging the lock pin, and the groove wheels are fixed in pairs in parallel at intervals in the axial direction of the fixed shaft inside the armrest main body, and each groove wheel is a plurality of grooves are formed at intervals in the circumferential direction, and the lock pin is disposed parallel to the fixed axis and is movably attached along guide grooves formed on both side walls of the armrest body. , the locking and unlatching means includes a knob rotatably supported on the armrest body, and a wire connecting the knob and the locking pin, and the locking pin usually engages with the groove of the groove wheel by a spring. An armrest characterized by being biased in a direction.