JP3575421B2 - Seiza Chair - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a seat chair suitable for use when a long sitting time is required, such as during a practice or a ceremony.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a seat of this type, a seat in which a hard sponge cushion material is attached to the upper side of a pedestal having a predetermined height is known.
[0003]
[Problems to be solved by the invention]
However, this has caused the following inconvenience due to the fact that the periphery of the bottom surface of the pedestal is angular.
[0004]
First, since a person sitting straight cannot easily take a forward leaning posture, and the weight of the upper body acts on one point of the buttocks, back pain is caused especially when sitting straight for a long time.
[0005]
Secondly, since the sitting chair is not easily tilted, it is difficult for a person sitting in the sitting position to move the body little by little, and blood flow deteriorates when the sitting position is extended for a long time.
[0006]
Third, if the forehead chair is forcibly tilted, the bottom of the pedestal may be cut into the tatami mat or the floor and damaged.
[0007]
The present invention has been made in view of such circumstances, and provides a seating chair that does not have a health problem due to low back pain or deterioration of blood flow even if the seating is performed for a long time, and that the tatami mat and the floor are not damaged. The purpose is to:
[0008]
[Means for Solving the Problems]
First, in the invention according to claim 1 of the present invention, a cushion receiving portion (2a) is formed on an upper portion of a pedestal (2) having a predetermined height (H1), and a cushion material (5) is provided above the cushion receiving portion. in the placement was sitting straight chair (1), thereby forming said base (2) into a bottomed cylindrical shape, the bottom peripheral portion of its arc cross-shaped rolling leading to side from the bottom surface of the base over the entire circumference Surface (2b) is formed.
[0009]
By adopting such a configuration, it becomes easy for the person sitting on the seat chair to take a forward leaning posture, and at the same time, the seat chair is tilted back and forth and right and left according to the movement of the person, and the periphery of the bottom of the base is folded. It works so that the situation where it sinks into the floor or does not occur.
[0010]
In the invention according to claim 2 of the present invention, the cushion receiving portion (2a) is formed so as to extend laterally from an upper portion of the pedestal (2), and a bottom surface of the pedestal is provided with: A cylindrical protruding piece (2e) located inside the side surface is erected, and a plug (4) for closing an upper surface opening of the pedestal (2) is mounted above the protruding piece (2e). It is characterized by the following.
[0011]
According to the first or second aspect of the present invention, a height adjusting spacer (3) is removably inserted between the cushion receiving portion (2a) of the pedestal (2) and the cushion material (5). For example , the total height of the sitting chair can be adjusted by appropriately removing the height adjustment spacer.
[0012]
Further, it preferred to form with extending rectangular shape toward the cushion receiving portion of the base (2) and (2a) laterally, in the same shape the cushioning material (5) in correspondence with the cushion receiving portion It is .
[0013]
With this configuration, if the sitting chair is installed vertically, the toes can be assembled.
[0014]
It should be noted that reference numerals in parentheses are for convenience showing corresponding elements in the drawings, and therefore, the present invention is not limited to the description in the drawings. This is the same for the column of “Claims”.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
FIGS. 1A and 1B are diagrams showing one embodiment of a sitting chair according to the present invention, wherein FIG. 1A is a perspective view as viewed from obliquely above, FIG.
FIG. 2 is a front cross-sectional view of a main part of the straight seat chair shown in FIG. 1,
3 is a detailed view of the pedestal of the sitting chair shown in FIG. 1, (a) is a plan view, (b) is a front view thereof,
FIG. 4 is a detailed view of the plug of the seat chair shown in FIG. 1, (a) is a longitudinal sectional view, (b) is a bottom view,
FIG. 5 is a use state diagram of the seat chair shown in FIG.
[0017]
As shown in FIGS. 1 and 2, the seat 1 has a polypropylene pedestal 2 having a predetermined height H1 (for example, H1 = 95 mm). Thus, the cushion receiving portion 2a is formed in a shape extending in a rectangular shape toward the side (horizontal direction). As shown in FIG. 2, a cylindrical protruding piece 2e is provided on the bottom surface of the pedestal 2 so as to face upward. A polypropylene plug 4 covers the pedestal 2 above the protruding piece 2e. It is detachably crowned. That is, as shown in FIG. 4, the plug 4 has a disk-shaped substrate 4a, and a cylindrical flange 4b is formed on a lower surface of the substrate 4a at a peripheral portion thereof in a downward direction. The cylindrical protruding piece 4c is formed downward. When the plug 4 is attached to the center of the upper surface of the pedestal 2, as shown in FIG. 2, the flange 4b and the protruding piece 4c of the plug 4 engage with the side surface 2d and the protruding piece 2e of the pedestal 2, respectively. Close up.
[0018]
Two height adjustment spacers 3 are removably mounted on the pedestal 2 and the plug 4, and a urethane cushion material 5 is mounted on the height adjustment spacers 3. ing. Here, as shown in FIG. 2, each height adjustment spacer 3 and cushion material 5 have the same shape (rectangular shape) as the cushion receiving portion 2 a of the pedestal 2 and are slightly larger. Further, as shown in FIG. 1, a cloth cover 6 is detachably covered on the height adjusting spacer 3 and the cushion material 5.
[0019]
By the way, a rolling surface 2b is formed around the entire periphery of the bottom surface of the pedestal 2, and the rolling surface 2b has an arc-shaped cross section extending from the bottom surface 2c to the side surface 2d of the pedestal 2.
[0020]
Since the sitting chair 1 has the above-described configuration, when sitting down with the sitting chair 1, as shown in FIG. 5, sit down on the sitting chair 1 and put both knees forward of the body. And place the toes on both sides of the pedestal 2.
[0021]
At this time, since the rolling surface 2b is formed around the bottom surface of the pedestal 2, the seat 1 can be easily inclined forward by tilting the seat 1, and the upper body can be placed by putting both knees on the tatami mat or the floor. Can be supported at the three points of the buttocks and both knees, so that the occurrence of back pain can be suppressed even if the sitting posture is long. In addition, when the body of the person sitting straight moves slightly, the seat chair 1 tilts forward, backward, left and right in accordance with the movement, so that it is possible to avoid a situation in which health is impaired due to deterioration of blood flow due to prolonged sitting. . In addition, since the rolling surface 2b of the pedestal 2 has an arc-shaped cross section extending from the bottom surface 2c to the side surface 2d of the pedestal 2, there is no possibility that the peripheral portion of the bottom surface of the pedestal 2 may be cut into the tatami mat or the floor and damaged.
[0022]
Also, since the weight of the person sitting on the seat 1 is mainly supported by the side surface 2d and the protruding piece 2e of the pedestal 2, in addition to being able to withstand a large weight, the height adjustment spacer 3 is detachable. By removing one or two height adjustment spacers 3, the total height of the sitting chair 1 can be reduced in accordance with the physique of the person sitting straight, thereby increasing the versatility of the sitting chair 1.
[0023]
The seating chair 1 may be installed vertically or horizontally when seated. However, if the seating chair 1 is installed vertically, it is easy to use because the feet can be assembled. Further, the cushion receiving portion 2a of the pedestal 2 does not necessarily need to be formed in a rectangular shape, and may be formed in a circular or elliptical shape, for example.
[0024]
【The invention's effect】
As described above, according to the first or second aspect of the present invention, the cushion receiving portion 2a is formed above the pedestal 2 having the predetermined height H1, and the cushion material is provided above the cushion receiving portion 2a. 5 in sit chair 1 mounted with the, as to form the base 2 in a bottomed cylindrical shape, the bottom peripheral portion of its arc cross-shaped rolling leading to side 2d entire periphery from the bottom surface 2c of the base 2 Since the surface 2b is formed, it is easy for a person sitting on the sitting chair 1 to take a forward leaning posture, and at the same time, the sitting chair 1 is tilted back and forth and right and left in accordance with the movement of the person. Since the situation where the bottom of the floor does not sink into the tatami mat or floor will not occur, even if you sit straight for a long time, there is no problem that harms your health due to back pain or deterioration of blood flow, and moreover, the tatami mat or floor may be damaged. No seat chair 1 It can be.
[Brief description of the drawings]
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing one embodiment of a seat chair according to the present invention, wherein (a) is a perspective view as viewed obliquely from above, and (b) is a perspective view as viewed from obliquely below its pedestal.
FIG. 2 is a front sectional view of a main part of the sitting chair shown in FIG. 1;
FIGS. 3A and 3B are detailed views of a pedestal of a sitting chair shown in FIG. 1, wherein FIG. 3A is a plan view and FIG.
FIGS. 4A and 4B are detailed views of the plug of the sitting chair shown in FIG. 1, wherein FIG. 4A is a longitudinal sectional view and FIG.
FIG. 5 is a view showing a usage state of the sitting chair shown in FIG. 1;
[Explanation of symbols]
1 ... seat 2 ... pedestal 2a ... cushion receiving part 2b ... rolling surface 2c ... bottom surface 2d ... side surface 3 ... height adjustment spacer 5 ... cushion material

Claims (2)

In a normal seat (1) in which a cushion receiving portion (2a) is formed above a pedestal (2) having a predetermined height (H1), and a cushion material (5) is placed above the cushion receiving portion,
Thereby forming the base (2) into a bottomed cylindrical shape, the bottom peripheral portion of its arc cross-shaped rolling surface extending to the side surface (2d) from the bottom surface of the base (2c) over the entire circumference of (2b) A seat chair characterized by being formed. The cushion receiving portion (2a) is formed so as to extend laterally from the upper portion of the pedestal (2), and has a cylindrical protruding piece (inside of the side surface) on the bottom surface of the pedestal. 2. The seat according to claim 1 , wherein a plug (4) for closing an upper surface opening of the pedestal (2) is mounted on an upper side of the protruding piece (2e) .

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