JPH0332282Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention has a pedestal that is located below the buttocks when sitting straight.
This invention relates to a one-legged chair for seiza sitting so that the legs are positioned approximately between the joints of both ankles.

BACKGROUND TECHNOLOGY Monopod chairs that have been developed for sitting upright are well known, and are suitable for situations where the appearance of sitting upright for a relatively long period of time is required.
By using this, numbness in the feet can be prevented as much as possible, so it can be used in temples, temples, etc. during sutra recitation, or in industries.
It is often used by people who hold sedentary jobs.

In such a one-legged chair, a shaft with a head protruding from the center of the fitting groove is drilled in the top surface of the leg in order to fit the protrusion on the top surface of the leg into a concave fitting groove cut into the bottom surface of the pedestal. A mechanism has been adopted in which the head is guided into the insertion hole, and then the head is engaged with a rotation locking tool inserted from the side of the leg, and the pedestal and the leg are fixed by rotation of the locking tool. It is something that exists.

Such a monopod chair has the effect of maintaining the appearance of sitting straight for a long period of time without becoming numb when used for the above-mentioned sitting, but this is undesirable because the pedestal is supported by one leg. Although the chair becomes stable, this instability makes it possible to make the chair comfortable to sit on, regardless of whether it is a one-legged chair.

In other words, as the hips move from side to side, the chair itself also moves from side to side using its legs as a fulcrum, and as a result, the body is able to fully cope with the sitting posture for long periods of time, and it is possible to maintain this posture without losing the posture. In terms of products,
A rectangular fitting groove is cut in the center of the lower surface of the pedestal in a concave shape in the width direction, and a protrusion of the same shape as the fitting groove on the upper surface of the leg is inserted into the fitting groove. The legs of the monopod bear the entire weight, and as the buttocks move laterally, the fitting part between the pedestal and the legs loosens, causing a swinging state and causing damage to the legs. It was hot.

In addition, the pedestal and leg are simply engaged by a shaft with a head protruding from the center of the fitting groove on the bottom of the pedestal, and a rotation locking device inserted from the side of the leg through the insertion hole on the top of the leg. Since it is fixed, the legs that take the full weight will inevitably have some play due to shallow insertion into the fitting groove, which will cause cracks in the legs and result in repeated use over a long period of time. It was not durable.

Problems to be Solved However, the assembly type monopod chair for seiza sitting according to the present invention was developed as a result of intensive research in view of the above-mentioned defects. The purpose of the present invention is to provide a one-legged chair that can be firmly fixed without loosening, can withstand repeated use over a long period of time, and is suitable for portable use.

Means for Solving the Problem In order to achieve the above object, the rectangular fitting groove 3 is cut in the width direction at the center of the lower surface of the base 1 in the seiza-seating monopod chair of the present invention. A shaft 5 with a head 6 protruding into the center of the fitting groove 3 and fitting the upper surface protrusion 4 of the leg 2 into the groove 3.
into the insertion hole 7 drilled in the upper surface of the leg 2,
In an assembly type monopod chair for seiza where the head 6 is removably locked to a rotation locking device 8 fitted in the leg portion 2, a non-circular shape is formed in the center of the fitting groove 3 in the longitudinal direction. Cut and extend arbitrary bulging grooves 9, 9a to be contoured, and fit and fix a fitting plate 10 that is thicker than the depth of the fitting groove 3 through the shaft 5 across both bulging grooves 9, 9a. Furthermore, the upper surface of the leg part 2 is formed with a concave groove 11 corresponding to the thickness of the fitting plate 10 and left and right protrusions 4 corresponding to the depth of the fitting groove 3. Board 10
The chair is characterized by an assembly type one-legged chair for seiza sitting which is connected to a base plate 1 through a.

Hereinafter, a detailed description will be given of the specific configuration of the assembly-type monopod chair for seiza sitting according to the present invention.

1 is a pedestal that receives the buttocks, and the pedestal 1
It is made of wood and has a rectangular appearance, approximately 18 cm long, 12 cm wide, and 2 cm thick.

3 is a rectangular shape along the width direction at the center of the bottom surface of the pedestal 1, approximately 10 cm long, approximately 2 cm wide, and approximately deep.
A fitting groove cut to 0.4 cm, the fitting groove 3
A shaft 5 having a circular head 6 at its tip is protrusively fixed at the center of the shaft.

In the center of the fitting groove 3, there are optional bulging grooves 9 each having a non-circular contour in the longitudinal direction.
A groove is formed by cutting 9a symmetrically and extending so as to be continuous with the rectangular fitting groove 3.

10 are respective bulging grooves 9, 9 that are continuous with the fitting groove 3;
an arbitrary fitting plate having the same shape as the non-circular contour to be fitted between the fitting grooves 3 and 3. It has an appearance that is thicker than the depth of the shaft 5, and is fixed with an adhesive or the like through the shaft 5. That is, the fitting plate 10 is fitted and fixed in the groove, and has a structure that protrudes from the lower surface of the base 1.

Reference numeral 2 denotes a leg made of wood that fits into the fitting plate 10 protruding from the lower surface of the pedestal 1 and the fitting grooves 3 on both sides thereof, and has a height of about 11 cm and a top width of about 11 cm.
It has a slightly trapezoidal appearance with a bottom width of approximately 13cm and a thickness of approximately 2cm.

The upper surface of the leg 2 is fitted and fixed to the lower surface of the pedestal 1. At this time, the upper surface of the leg 2 has a center portion with a depth corresponding to the thickness of the fitting plate 10, and a depth corresponding to the thickness of the fitting plate 10. A recessed groove 11 having a width equivalent to that of the recessed groove 11 is bored, and protrusions 4 corresponding to the depth of the fitting groove 3 formed by the cutout portions 15 are formed on the left and right sides of the recessed groove 11 .

7 is an insertion hole drilled in the upper surface of the leg 2 through which the shaft 5 with the head 6 is inserted; 8 is a rotation locking tool that penetrates the insertion hole 7 that is inserted into the leg 2 from the side; The head 6 is guided in a groove around a rotation locking device 8, and the rotation of the locking device 8 causes the shaft 5 to be engaged and fixed in tension.

Then, the concave groove 11 on the upper surface of the leg 2 is fitted into the fitting plate 10 on the lower surface of the pedestal 1, the protrusion 4 is fitted into the fitting groove 3, and the shaft 5 is fitted while being guided into the insertion hole 7. Locking tool 8
By this rotation, the base 1 and the leg portions 2 can be reliably fixed.

In the figure, 12 is a key for rotating the slidable rotation locking device 8, 14 is a through hole for holding the key 14 when assembled into a monopod chair, and 13 is a pedestal 1 when the monopod chair is disassembled.
This is a small hole for inserting the shaft 5 which connects the leg part 2 in a planar manner, and is used for carrying around.

Effects of the invention According to the invention, longitudinally extending bulging grooves 9 and 9a are cut in the fitting groove 3 on the lower surface of the pedestal 1, and the fitting plate 10, which is thicker than the depth of the fitting groove 3, is cut into the bulging groove. 9,9a
At the same time, the legs 2 are fastened to the pedestal 1 with protrusions 4 and grooves 11 formed on the upper surface corresponding to the grooves 3 and the protrusions formed by the fitting plate 10, respectively. Since the fitted state of the pedestal 1 and the leg part 2 is fixed by using the uneven surfaces of each, the surface contact parts are diverse, and therefore the leg part of the temporary monopod is Even when the full weight of the body is applied to the leg 2 and the leg moves laterally, the leg can be reliably tightened without loosening, and there is no risk of damaging the leg.

Further, the pedestal 1 and the leg portions 2 are deeply fitted together, resulting in a strong and stable fitting, which is advantageous in that it can withstand repeated use over a long period of time.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an overall perspective view, FIG. 2 is a rear perspective view of the pedestal with the fitting plate removed, and FIG. 3 is a cross-sectional view of the pedestal with the fitting plate fitted. FIG. 4 is a perspective view of the leg, and FIG. 5 is a partially cutaway plan view of the rotation locking device. 1... Pedestal, 2... Leg, 3... Fitting groove, 4...
...protrusion, 5 ... shaft, 6 ... head, 7 ... insertion hole, 8 ... rotation stopper, 9, 9a ... bulge groove, 1
0... Fitting plate, 11... Concave groove.

Claims (1)

[Scope of utility model registration request] A rectangular fitting groove 3 is cut in the center of the lower surface of the base 1 in the width direction, and the upper surface protrusion 4 of the leg 2 is inserted into the groove 3.
At the same time, the shaft 5 with the head 6 protruding from the center of the fitting groove 3 is guided to the insertion hole 7 drilled in the upper surface of the leg 2, and the rotation locking tool is fitted into the leg 2. In the assembly-type monopod chair for seiza sitting, in which the head 6 is removably engaged with the head 8, arbitrary bulging grooves 9, 9a having a non-circular contour are cut in the central part of the fitting groove 3 in the longitudinal direction. As well as extending, across both bulging grooves 9 and 9a,
A fitting plate 10 that is thicker than the depth of the fitting groove 3 is passed through the shaft 5 and fitted and fixed, and then the upper surface of the leg 2 is fitted with the fitting plate 10.
A concave groove 11 corresponding to the thickness of the fitting groove 3 and left and right protrusions 4 corresponding to the depth of the fitting groove 3 are formed, and are fastened to the base plate 1 through a fitting plate 10 in a part of the leg part 2. This is an assembly type monopod chair for seiza sitting.