JPH0638858A - Seat with arm rest - Google Patents

Abstract

PURPOSE:To enhance seating comfort by automatically adjusting the height of the arm rest of a seat and the like in response to the consitution of a man seated on a seat. CONSTITUTION:A seat body 2 and an arm rest 4 are so constituted as to be freely moved up and down, and the arm rest 1, is moved up and down in proportion to the descending height of the seat body 2 by linking the seat body 2 with the arm rest 4 via a linking means such as a link body 10 and the like. And when a tall man of great stature takes a seat, the height of vertical movement of the arm rest 4 is made large, and when a short man of small stature takes a seat, the height of vertical movement of the arm rest 4 is made small. Since the height of vertical movement is increased/decreased roughly in proportion to the sitting height of a man seated on a seat thus as mention above, the arm rest 4 can be placed at an optimum position even when the constitution of a man seated on a seat is different.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved chair having an elbow pad.

[0002]

2. Description of the Related Art It is well known that, in a chair, an elbow pad for placing both left and right elbows of a person is provided above the left and right sides of a seat. It is a street, and in the past, I fixed the elbow pad to the seat,
The height from the top of the seat to the top of the elbow rest is constant. However, in general, a large person has a high sitting height, and therefore the height from the upper surface of the seat to the elbow is high when sitting on a chair, while a small person has a low sitting height, so a sitting person in a seated state It is thought that the height from the upper surface of the seat to the elbow will also be low, and the height from the upper surface of the seat to the elbow differs depending on the person's physique, so in the conventional chair with the same height of the elbow pad,
If the person who sits on the chair has a different physique, the elbow may float from the elbow pad, or on the contrary, the elbow may be stretched over the elbow pad, giving a comfortable sitting comfort regardless of the physique. There was a problem that it could not be done.

An object of the present invention is to provide a chair that solves this problem.

[0004]

In order to achieve this object, a chair according to the present invention comprises a seat body and a movable elbow pad which can be vertically moved or tilted with respect to the seat body. The body and the elbow rest are related to each other via the interlocking means so that the elbow rest moves according to the magnitude of the downward load on the seat body.

[0005]

With the above configuration, for example,
When a large, heavy person sits down, the height of the elbow pad rises, and when a small, lightweight person sits down, the elbow pad height decreases. The height can be automatically adjusted in proportion to the weight of the person sitting on the chair.

Therefore, according to the present invention, the height of the elbow pad can be automatically adjusted so as to substantially match the position of the elbow of the person sitting on the chair, so that no special adjustment work is required. , Having the effect of giving a comfortable sitting comfort to each person having a different physique.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings on the assumption that the height from the seat to the elbow increases as the physique of a person increases. In the figure, reference numeral 1 denotes a pedestal of a chair, reference numeral 2 denotes a seat, reference numeral 3 denotes a backrest, and elbow pads 4, 4 extending in the front-rear direction are arranged above the left and right side portions of the seat 2, respectively. is doing.

A supporting frame body 5 having an upward opening is fitted on the upper end of the pedestal 1, and a base plate 6 is mounted on the upper end of the supporting frame body 5.
The seat body 2 is supported by the four weight-sensing applied springs 7 mounted on the base plate 6 in the front, rear, left, and right directions, so that the seat body 2 is adjusted to the magnitude of the downward load on the seat body 2. It is configured to descend by an appropriate amount. A reinforcing plate 8 is fixed to the lower surface of the seat body 2.

L-shaped upward brackets 9 in a front view are provided upright at the front and rear ends of both left and right sides of the base plate 6, and a link body 10 as an example of interlocking means is provided at the upper end of each upward bracket part 9. The left and right approximately midway portions of the link body are pivotally attached by the first pins 11 on the left and right sides, and one end of each link body 10 is
The downward brackets 12 formed by bending the side edges of the reinforcing plate 8 of the seat body 2 are pivotally attached by the second pins 13 on the left and right sides, respectively, while the other ends of the link bodies 10 are connected to the elbow pads 4 Left and right 1 with respect to the front and rear foot pieces 14 protruding downward on the
The third pin 15 of each book is pivotally attached.

Further, guide pins 16 extending in the front-rear direction are mounted between the outer ends of the front and rear upward brackets 9 on the base plate 6, and both front and rear ends of the guide pins 16 are attached to the front and rear feet of the elbow pad 4. It is fitted and inserted into a vertically long slot 17 formed in the piece 14. The elbow pad 4 may be configured to be tiltable in the front-back direction. In the above configuration, when a person sits down on the chair, the seat body 2 moves downward against the weight application spring 7 as shown in FIG. 6, and each link body 10 moves as the seat body 2 moves downward. By rotating all around the first pin 11 at the same time, the left and right elbow pads 4, 4 simultaneously rise by an amount proportional to the amount of lowering of the seat body 2.

In this case, since the spring constant of the body weight application spring 7 is constant, the descending amount of the seat body 2 increases in accordance with the weight of the person sitting on the chair. It increases in proportion to the weight of the person sitting on the chair. On the other hand, in general, when a person with a large seat height sits on the chair, the height from the upper surface of the seat 2 to the elbow of the person becomes high, and when a person with a small seat height sits on the chair, The height from the upper surface of the seat 2 to the elbow of the person is considered to be low,
Generally, a large and tall person has a heavy weight, and a small and short person has a light weight. Therefore, when a large person sits on a chair, the elbow pad 4 rises high and a small person. When the person sits down on the chair, the height of the elbow rest 4 decreases, so even if the person sitting on the chair has a different physique, the elbow rest 4
The height of the is automatically adjusted to match the height of a person's elbow.

The seat 2 is lowered when a person sits down, and the relative height between the seat 2 and the elbow rest 4 changes depending on the person sitting on the chair. The relationship between the descending amount and the rising height of the elbow pad 4 is set to a ratio in consideration of the relative difference in height between the seat body 2 and the elbow pad 4 when a person sits on a chair. By the way, as a person's height increases, the length of his arm also increases. Therefore, it is conceivable that the height from the seat body 2 to the elbow decreases on the contrary when the physique increases. The elbow pad 4 may be configured to descend in proportion to the magnitude of the load.

Further, the seat body 2 is constructed so as to be tilted rearward in proportion to the weight of the person, and in relation to the rear tilting of the seat body 2,
It has been attempted to increase the elastic resistance of the spring means against the rearward tilting of the backrest 3, and in this case, the elbow rest 4 is configured to be tiltable rearward so that the elbow rest 4 interlocks with the rearward tilting of the seat body 2.
May be tilted rearward. Further, since a person tends to have a larger shoulder width as he / she becomes larger, the left and right elbow pads 4 and 4 are configured so that the distance between them is widened, and the left and right elbow pads are proportional to the load on the seat body 2. Elbow pad 4,
The interval of 4 may be increased, or the interval between the left and right elbow pads 4, 4 and the vertical movement may both be linked to the magnitude of the load on the seat 2.

In the above-mentioned embodiment, the lowering of the seat and the vertical movement of the elbow rest were associated with each other. However, the downward load on the seat such as raising the elbow rest in conjunction with the rearward tilting of the seat. It is also possible to correlate other displacement amount that changes depending on the vertical movement of the elbow pad. Further, it goes without saying that the interlocking means is not limited to the link body as in the embodiment, and other structures such as pulling with a wire may be adopted.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of an interlocking device.

FIG. 2 is a perspective view of a chair.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV of FIG.

5 is a cross-sectional view taken along line VV of FIG.

FIG. 6 is a diagram showing an operating state.

[Explanation of symbols]

 1 pedestal 2 seat body 3 backrest 4 elbow rest 7 weight application spring 10 link body as an example of interlocking means

Claims (1)

[Claims] 1. A seat body, and a movable elbow pad that can be moved up and down or tilted with respect to the seat body. The seat body and the elbow pad are provided according to the magnitude of a downward load on the seat body. A chair with an elbow pad characterized in that the elbow pads are linked so as to move by an interlocking means.