JP2001104095A - Posture transition stable type bench and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the moving amount of center of gravity of a human body at the time of taking a seat and standing up. SOLUTION: In this bench formed by fixing a seating member, a back member and a support arm to a chair frame, a seating surface is gently inclined forward and a hand arm is mounted below the support arm in the same direction to attain stable posture transition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stable posture-shifting bench for minimizing the amount of movement of the center of gravity of a body when a person sits on and takes off, and a method of manufacturing the same.

[0002]

2. Description of the Related Art Heretofore, there has been proposed a seating bench for a short rest for the elderly, in which the amount of movement of the center of gravity of the body is reduced as much as possible when sitting and leaving (utility model registration No. 3042559). Gazette).

[0003]

The above-mentioned conventional bench is provided with a grip portion called a handrail at the end of the chair frame to assist in supporting the seating and leaving the seat. It may not always be enough for the sick, and there is a problem that the height is not determined so that it can be adapted to most people.

[0004]

Means for Solving the Problems In view of the above problems, the inventor of the present application has conducted intensive studies and found that from an ergonomic point of view,
With regard to the dimensions of each part, the inclination of the seating surface or the height of the hand arm that can be satisfied by 80% or more of the Japanese people was specified, and the bench that solved the above problems was completed by using the hand arm and the support arm together. It is.

[0005] That is, the invention of the object is a bench in which a seating member, a back member and a support arm are fixed to a chair frame.
A posture-transition-stable bench characterized in that a seating surface is gently inclined forward and a hand arm is installed in the same direction as the lower part of the support arm. The inclination angle of the seating surface is 3 to 10 degrees. The angle of inclination of the member is 5 to 10 degrees.

At least the buttocks abutment portion of the seating member is made of an elastic material. In a bench in which the seating member, the back member and the hand arm are fixed to the chair frame, the upper surface of the seating member is 4 to 6 degrees. The hand arm is inclined, and the height of the upper surface of the hand arm is 680 mm ± 20 mm.

[0007] Next, in the method invention, in two chair frames having support arms fixed to adjacent sides, a support rod of a seating member is fixed with a common bolt, and a lower portion of the two support arms is shared in the same direction. Fix the hand arm of
A method of manufacturing a posture-shifting stable bench characterized by fixing a seat member and a back member to the chair frame, wherein a support frame of the seat member of the chair frame uses a member having a rectangular cross section.

In the above invention, the angle of inclination of the seat member of 3 ° to 10 ° (relative to the horizontal plane) is an ergonomically selected angle, and if it is less than 3 ° or 10 ° or more, the effect is rather reduced.

The height of the support arm (the height of the upper surface)
680 mm is a numerical value calculated from the average height of Japanese people, and if it is set to ± 20 mm, more than 80% can use it comfortably. Further, the inclination angle of the back member (the forward inclination angle with respect to the vertical) of 5 to 10 degrees is an angle selected through various experiments.

There is no particular restriction on the material of the chair frame in the above invention, but stainless steel, aluminum, and other materials which do not rust and have sufficient strength are preferred. The cross-sectional shape is generally a pipe such as a circle, an ellipse, and a square, but the frame that supports the seating member is an angle material,
There are channel materials and the like, and the leg members are the same.

The material and cross section of the support arm and the hand arm of the invention are not restricted either, but a circular or elliptical cross section is preferable from the viewpoint of easy grasping.

Although the chair according to the present invention is assumed to be used by a plurality of people at the same time mainly as a bench, the same object can be achieved by arranging a plurality of chairs for one person. Therefore, one person in the embodiment (FIG. 1)
Even if it is only the middle right side, it belongs to the technical scope of the present invention (of course, under the condition of having a hand arm).

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a posture-shifting stable bench in which a chair frame has a seating member whose upper surface is gently inclined forward, and a support arm and a hand arm of a predetermined height are installed on at least one side of the chair frame. It is about.

Further, the invention of the method is a method of manufacturing a chair in which two chair frames are fixed in series and a support arm and a hand arm are installed in parallel at adjacent positions.

It is desirable that at least the buttocks abutment portion of the seating member is made of an elastic material (for example, rubber or sponge), the upper surface inclination is 3 degrees to 10 degrees, and the inclination angle of the back member is 5 degrees to 10 degrees. Is appropriate.

[0016]

Embodiment 1 An embodiment of the present invention will be described with reference to FIGS. A support arm 1 is provided on one side (adjacent side) of the chair frame 1 for two persons and the chair frame 2 for one person.
a, 2a are provided, and the horizontal bars 1b, 2b for the seating members on the support arms 1a, 2a side are fixed by bolts 4 with the spacer 3 interposed therebetween. Then the support arm 1
a, 680 mm high hand arm 5 below 2a
(The height from the floor surface to the upper surface)
a, 2a.

Next, elastic seat members 6 and 7 are fixed onto the seat frames 1c and 2c (the upper surface inclination angle is 5 degrees),
The back members 8, 9 are fixed to the back rods 1d, 2d. The inclination angle of the back members 8, 9 is 8 degrees (with respect to the vertical). The height of the support arms 1a, 2a was 800 mm.
Thus, the bench 10 of the present invention was completed.

In the above embodiment, the right side in FIG. 1 is for one person and the left side is for two persons. Two persons sitting close to the hand arm 5 can use the hand arm, while the other person can use the arrow.
It is used by moving laterally as in 1 or standing up without using the hand arm 5. In the above description, if the support arm 1e is provided on the left side of the chair frame 1 and the hand arm 12 is provided, all the members can use the hand arm.
A bench with the hand arm 12 will be manufactured.

According to the present invention, as shown in FIG. 8, the movement of the center of gravity of the body is small when the user sits on and takes off the seat, so that the burden on the knee when the user stands up is reduced. This is apparent from comparison with FIG. That is, it is considered that not only the forward leaning posture in FIG. 9 becomes unnecessary, but also the presence or absence of the rising force due to the force of the arm significantly affects the knee.

[0020]

Embodiment 2 Another embodiment of the present invention will be described with reference to FIGS. The embodiment of FIG.
4 are connected in series and the hand arm 19 is fixed, thereby constituting the bench 15 of the present invention.

FIG. 6 shows a two-seater bench 1.
6 and two chairs 17 connected in series with a single chair 17 constitute a bench 20 of the present invention with back to back.

In each of the above embodiments, the hand arm 21 is provided at the connecting portion.

Each of the benches 15 and 20 in this embodiment can reduce the movement of the center of gravity of the body when seated and when unseated.

[0024]

Embodiment 3 Another embodiment of the present invention will be described with reference to FIG. In this embodiment, a single arm, a two-seater, single-seat three-chair frame 22, 23, 24 is attached to the hand arms 22a, 23
a, 23a, 24a, and a common seat member 25
And a back member 26 fixed thereto to constitute a bench 27 of the present invention. According to the bench 27, all the persons on the bench can use the hand arm.

The inclination angle of the seat member 25 was 5 degrees, the height of the hand arm was 680 mm, and the inclination angle of the back member was 7 degrees.

[0026]

According to the present invention, the seating member is set to be slightly inclined with respect to the front, and the hand arm is provided.
Since the movement of the center of gravity of the body is small at the time of taking off and the burden on the knee can be reduced, it is suitable for use by elderly people, obese people, or sick people.

If the support arm is arranged side by side with the hand arm, there is an effect that the burden on the knee at the time of sitting and taking off can be further reduced.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a perspective view of the chair frame.

FIG. 5 is a perspective view of the four-seat embodiment.

FIG. 6 is a perspective view of the same six-seater embodiment.

FIG. 7 is a perspective view of an embodiment such as a support arm.

FIG. 8 is an explanatory view of the movement of the center of gravity when the bench of the present invention is used.

FIG. 9 is an explanatory diagram of the movement of the center of gravity when a conventional bench is used.

[Explanation of symbols]

 1, 2 Chair frame 3 Spacer 4 Bolt 5 Hand arm 6, 7 Seating member 8, 9 Back member 10, 13, 14, 15, 16, 18, 18, 20 Bench 12 Hand arm 17 Chair 19, 21 Hand arm 22, 23, 24 Chair frame 25 Seating member 26 Back member 27 Bench

Claims (6)

[Claims] 1. A bench in which a seating member, a back member, and a support arm are fixed to a chair frame, wherein a seating surface is gently inclined forward, and a hand arm is provided in the same direction as a lower portion of the support arm. Posture transition stable type bench. 2. The inclination angle of the seating surface is 3 to 10 degrees,
The posture transition stable type bench according to claim 1, wherein the inclination angle of the back member is 5 to 10 degrees. 3. The posture transition stable bench according to claim 1, wherein at least the buttocks abutting portion of the seating member is made of an elastic material. 4. In a bench in which a seating member, a back member and a hand arm are fixed to a chair frame, the upper surface of the seating member is inclined at 4 to 6 degrees, and the height of the upper surface of the hand arm is 680.
mm ± 20 mm. 5. In two chair frames having support arms fixed on adjacent sides, a support rod of a seating member is fixed with a common bolt, and a common hand arm is fixed in the same direction below the two support arms. And a seating member and a back member fixed to the chair frame. 6. The method according to claim 5, wherein the supporting frame of the seating member of the chair frame uses a member having a rectangular cross section.