JPH0111103Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an armrest for a seat whose height can be adjusted arbitrarily, and the armrest is particularly convenient when applied to seats of automobiles and the like.

To explain the present invention with reference to an embodiment shown in the drawings, a seat 1 is composed of a seat portion 1A and a backrest portion 1B, and armrests 2, 2 are attached to both sides. .
The armrests 2, 2 have a base 21 as shown in FIG.
and a top plate 22 provided on the base 21 via a hollow expandable part 23 surrounded by a bellows-shaped peripheral wall 23A, and the top plate 22 is attached to a hinge 25A of the bracket 25 extended from the base 21. The root portion is pivotally connected to
is in contact.

In the above configuration, the air introduction path 2 is provided in the expandable part 23.
When air is injected through the hinge 2 of the bracket 25, the expandable part 23 expands, but the base of the top plate 22 is connected to the hinge 2 of the bracket 25.
5A, the expandable portion 23 expands from the front, and as a result, the mounting angle of the top plate 22 changes as shown by the dotted line in Figure 2. Thus, in the normal state, the top plate 22 of the armrest 2 is horizontal as shown in FIG. 1, but when the backrest 1B of the seat 1 is reclined as shown in FIG. The top plate 22 is tilted so that the elbow can be easily rested on the armrest 2. As shown in FIG. 4, the air introduction passage 24 that presses air into the extendable portion 23 of the armrest 2 goes out from the bottom surface of the armrest 2, bends inward, passes through the inside of the seat 1A of the seat 1, and enters the seat 1A. It goes out from the bottom and connects to the air pressure pump 3. The air pump 3 is operated by a switch 26 attached to the outer surface of the armrest 2. Further, an air vent passage 24A is branched from the air introduction passage 24, and the air vent passage 24A is opened and closed by an on-off valve 27 having a handle 27A. Thus, when the switch 26 is pressed, the air pump 3 is activated, and the armrest 2 is placed in the inclined state shown by the dotted line in FIG. 2 and in FIG. is removed, and the armrest 2 becomes in the horizontal state shown by the solid line in FIG. 2 and in FIG. 1.

The present invention is not limited to the above-mentioned embodiments. For example, as shown in FIG. The introduction path 24 may be connected to each other, and in this case, the expandable portion 23 is connected to the air bag 2.
It will expand and contract through 8, and the 6th
As shown in the figure, it is not necessary to fix the base of the top plate 22 to the bracket with a hinge. In this case, the top plate 22 does not tilt as air enters and exits the expansion/contraction section 23, but is kept horizontally at a height as shown by the dotted line. change only.
Further, the on-off valve may be of an electromagnetic type, and in this case, the operating means for the on-off valve is a switch interposed in a power transmission circuit connected to an electromagnet that operates the on-off valve.

As described above, the present invention incorporates the air introduction passage and the air vent passage into the base, so there is no need to use a weak flexible pipe to supply air to the expansion and contraction part, and there is no need to cut the flexible pipe as in the past. It is possible to avoid problems such as air leakage or failure to supply air due to dislodgement or holes, and since the handle of the on-off valve is provided on the outer surface of the base, it is possible to avoid problems such as when a person is seated. You can adjust the armrest to any height by operating the on-off valve. The height, inclination angle, etc. of the armrest top plate can be freely adjusted by allowing air to enter and exit the expandable part via the air introduction path according to the body shape, posture, and preferences of the seat user. , and the structure is extremely simple.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of the armrest in a horizontal state, FIG. An explanatory view of the introduction path, FIG. 5 is a vertical cross-sectional view of the armrest of another embodiment, and FIG. 6 is a vertical cross-sectional view of the armrest of another embodiment. In the figure, 1...Seat, 2...Armrest, 21...Base, 22...Top plate, 23...Extendable part, 24...Air introduction path, 28...Air bag.

Claims (1)

[Scope of utility model registration request] a base; a top plate provided on the base via a hollow expandable part surrounded by a bellows-like peripheral wall; and an air introduction path extending from an air pressure pump, passing through the base and communicating with the inside of the expandable part; , an air vent passage branching from the air introduction passage within the base and opening to the outer surface of the base, and an on-off valve provided at the opening of the air vent passage, and an operating means for the on-off valve is disposed on the outer surface of the base. The armrest of the seat is characterized by: