JP2002058563A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair, particularly for a bank teller, having a simple structure and ensuring that adjacent leg blades are made to enter spaces around a seater's feet through the operation of simply directing a seat body to the front of a desk. SOLUTION: The chair comprises a leg with five leg blades projecting radially by equal lengths toward the corners of a right pentagon, a leg column whose lower end is attached to the center of the leg; and a seat or the like mounted at the upper end of the leg column. When the front face of the seat is located at the center between adjacent leg blades, the seat and the leg are not rotatable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair for a bank teller.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, a teller of a bank usually performs a business by arranging a sleeve cabinet 2a integrated with a desk 1a or a movable side cabinet 3a side by side. In addition, the space 4a around the feet of the teller was very limited because a large number of people were assigned to perform business processing in order to improve the service. On the other hand, when the store is closed, the user often takes a break and takes a rest, and it is necessary to use a chair 6a (hereinafter referred to as a five-legged chair) having five legs with excellent stability.

That is, in the case of a five-legged operation, in a seated operation state, unless two adjacent leg blades 7a, 7a enter the space 4a around the foot (state shown in FIG. 6), a satisfactory operation is performed. The posture cannot be taken, and when leaving the seat, the chair must be moved to a position where two more legs 7a, 7a are stored in the space 4a around the feet (the state shown in FIG. 7) to secure the passage space 8a. Can not. However,
Since the seat body 9a is configured to be rotatable with respect to the leg body 10a, the direction of the seat body 9a does not match the direction of the leg body 10a.
.. Frequently collided with the front surface of the side cabinet 3a or the like, causing the desk 1a or the like to be damaged. For this reason, it is very troublesome and inconvenient to use, for example, moving the chair while checking that the direction of the leg 10a is peeped each time, such as when working or leaving the seat.

[0004]

SUMMARY OF THE INVENTION The present invention has a simple structure, and the operation of simply turning the seat body toward the front of the desk ensures that the two adjacent leg blades enter the space around the foot. The task is to provide chairs.

[0005]

Therefore, in order to solve the above-mentioned problems, the present invention is configured as a first means, which comprises five protruding radially equal lengths in the direction of a regular pentagonal corner. A leg body having leg blades, a leg post having a lower end attached to the center of the leg, a seat body attached to the upper end of the leg post, etc., and a central portion between two adjacent leg blades. The seat body and the leg body are configured to be non-rotatable in a state where the front surface of the seat body is located at the position.

Further, the present invention is constituted as a second means as follows: a leg having five leg blades projecting radially; and a lower end attached to the center of the leg to have a height adjusting function. A leg support, and a rotatable seat attached to the upper end of the leg support, the front of the seat being adjacent to the seat support;
The point is that a rotation stop device that makes the seat body unrotatable with respect to the legs in a position positioned at the center between the leg blades of the book is provided on the leg posts.

Further, the present invention is configured as a third means, which has a leg body having five radially protruding leg blades, and a lower end portion attached to the center of the leg body to have a height adjusting function. It comprises a leg support and a rotatable seat body attached to the upper end of the leg support. The leg support includes a substantially cylindrical gas cylinder main body rotatable integrally with the seat body, and a gas cylinder main body. The support tube has a lower end portion formed of a support tube attached to a leg body, and is provided on the support tube in such a manner that the front surface of the seat body is located at a central portion between two adjacent leg blades. The point is that the groove for stopping rotation in which the tip of the rotation stopping screw is located is formed in the vertical direction on the side surface of the gas cylinder body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to FIGS. In FIG. 1, reference numeral 1 indicates a seat body, reference numeral 2 indicates a leg, and reference numeral 3 indicates a leg support. The seat 1 is
A seat 11 whose front side is slightly inclined and a seat 11
A backrest 13 provided above the rear of the seat 11 via a backrest rod 12 whose end is swingably connected to the lower surface.
And a leg support mounting portion 14 disposed on the lower surface of the seat 11, and a cylindrical support cover 15 having an open lower surface and an upper end connected to the lower surface of the leg support mounting portion 14. The column cover 15 has an insertion hole 151 at the upper part of the side surface into which the tip of the height adjusting operation rod 16 is inserted, and an engagement projection 152 projecting from the upper end and engaging with the leg column attachment part 14.

The leg body 2 has five leg blades 21 projecting radially from the center of a regular pentagon at each corner, and casters 22. Is provided, and a tapered leg support mounting recess 23 having a small diameter at the lower portion where the upper surface is opened is formed at the center. Leg support 3
Are the gas cylinder body 31 and the gas cylinder body 3
1 is rotatably held, and is constituted by a support tube 5 whose lower end portion is tightly fitted and fixed in a leg support mounting concave portion 23 formed in the leg body 2.

As shown in FIG. 3, the gas cylinder main body 31 has a tapered upper end fixing portion 311 having an upper end portion tapering upward and a cylinder outer cylinder integrally provided below the upper end fixing portion 311. Part 312 and a lower part of the cylinder outer cylinder part 31 from the center of the lower end face of the cylinder outer cylinder part 312.
2, a piston shaft 313 that is rotatable and protrudes freely in and out. A piston shaft fixing portion 314 is formed at the lower end of the piston shaft 313 and is supported by the lower end surface of the support tube 5 so as not to come off. In the vertical direction of 312, anti-rotation grooves 301, 301 are formed so as to face each other. Above a predetermined dimension of one anti-rotation groove 301, the tip of the operating rod 16 for height adjustment is swingable. Is formed in the holding hole 302.

The upper end fixing portion 311 of the gas cylinder main body 31 is tightly fitted and fixed to a gas cylinder mounting concave portion (not shown) formed in the leg support mounting portion 14 provided on the lower surface of the seat portion 11. The gas cylinder main body 31 also rotates with the rotation of the seat 11.

As shown in FIGS. 4 and 5, the support tube 5 is tapered at the lower end so as to have a smaller diameter toward the bottom, and is fixed to the leg support mounting recessed portion 23 formed on the leg 2 by a close fit. A metal outer cylinder part 51 and a synthetic resin that is held in the upper half part of the outer cylinder part 51 and is fitted to the upper half part of the cylinder outer cylinder part 312 to support the cylinder body 31 in a freely rotatable manner. And a cylinder main body support portion (not shown) to which the piston shaft fixing portion 314 of the gas cylinder main body 31 is prevented and connected is formed at the bottom of the metal outer cylinder portion 51. .

At the upper end of the outer cylindrical portion 51, rotation stopping screw holes 510, 510 are formed at positions corresponding to the rotation stopping grooves 301, 301 of the cylinder body 31, and the rotation stopping screw holes are formed. Detents 510, 510 are screwed with detent screws 50, 50 whose tips are located in the detent grooves 301, 301. That is, the detent grooves 301, 301 of the cylinder body 31 and the detent screws 50, 50 of the support tube 5 constitute a detent device. The length of the column cover 15 in the up-down direction is set so that when the seat portion 11 reaches the maximum height, the detent screws 50 are exposed below the lower end of the column cover 15. When using in a place where rotation stop is not required, set the seat portion 11 to the maximum height, and then use the rotation stop screw 5
It is good to remove 0 and 50. Since the present invention is configured as described above, it has the following effects.

[0014]

According to the first aspect of the present invention, two adjacent two
Since the seat body and the legs are configured to be non-rotatable in a state where the front of the seat body is located at the center between the leg blades of the book, even if the legs are five leg blades, By just pointing the direction to the front of the desk, the two adjacent leg wings are located at the point where they surely enter the space around the foot,
The desk and the like are not damaged, and the usability is greatly improved as a chair for a teller.

According to the second aspect of the present invention, since the rotation stopping device is formed on the leg post, in addition to the above-described effects, the structure can be made simple and inexpensive.

According to the third aspect of the present invention, the detent device holds the detent groove formed in the vertical direction of the side surface of the gas cylinder main body, and holds the gas cylinder main body in a rotatable and vertically movable manner. Since the lower end is constituted by a rotation stop screw provided on the support tube attached to the leg, in addition to the above-described effects, without hindering the elevation of the seat body, if the rotation stop screw is removed, It is a chair with excellent versatility that can be used as a conventional swivel chair.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part of the present invention.

FIG. 2 is a front view of the present invention.

FIG. 3 is a front view of a cylinder body.

FIG. 4 is a front view of a leg support.

FIG. 5 is an enlarged end view taken along line AA of FIG. 4;

FIG. 6 is an explanatory diagram showing a working state in a conventional example.

FIG. 7 is an explanatory view showing a stored state in a chair in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat body 2 Leg body 21 Leg blade 3 Leg support 31 Cylinder main body 301 Detent groove for rotation stop 5 Support tube 50 Rotation screw

Claims (3)

[Claims] 1. A leg having five leg blades projecting radially and equally in the direction of a regular pentagonal corner, a leg post having a lower end attached to the center of the leg, and a leg post. That the seat and the legs are not rotatable with the front of the seat positioned at the center between the two adjacent leg blades. Chair featuring. 2. A leg body having five radially projecting leg blades, a leg post having a lower end attached to the center of the leg and having a height adjusting function, and a leg post attached to the upper end of the leg post. The leg support is made up of a rotatable seat body, and a detent device that prevents the seat body from rotating with respect to the leg body in a posture where the front of the seat body is located at the center between two adjacent leg blades. A chair characterized by being done. 3. A leg having five radially protruding leg blades, a leg post having a lower end attached to the center of the leg and having a height adjusting function, and a leg post attached to the upper end of the leg post. The leg support comprises a substantially cylindrical gas cylinder body rotatable integrally with the seat body, and holds the gas cylinder body rotatably and vertically movable. An anti-rotation recess formed by an attached support tube, in which the front of the seat body is positioned at the center between two adjacent leg blades, and the tip of a rotation stop screw provided on the support tube is positioned. A chair, wherein a groove is formed in a vertical direction of a side surface of the gas cylinder body.