JP3063015U - Chair - Google Patents

Abstract

(57) [Problem] To provide a convenient new chair that exhibits sufficiently distinctive originality and novelty and eliminates rut. SOLUTION: A three-dimensional pedestal having a pyramid shape or a rectangular parallelepiped shape is formed, and a pillar mounting plate is provided at a central portion of a top surface of the three-dimensional pedestal, and the pillar mounting plate has a bottomed cylindrical shape. The shaft cylinder is erected with its upper half above the pillar mounting plate, with the lower half protruding downward, and the upper end of the cylinder is raised by the operation of the lever and the load is larger than a predetermined value. A gas spring which is lowered and rotatable is built in, a seat mounting base plate is fixed to the upper end, and a seat body with a backrest is mounted and fixed on the seat mounting plate. Concave notches are provided at the front, rear, left and right portions of the lower surface of the left and right plates, and when weight is added by the user's sitting in each of these concave notches, when the wheel is completely immersed and the weight is released Due to the force of the built-in spring, the lower part of the wheel A caster of a type that protrudes is fixed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a chair in which a seat with a backrest is provided on a three-dimensional pedestal so as to be able to move up and down and rotate freely.

[0002]

[Prior art]

 Conventionally, as a chair of this type, a long pedestal is erected on a single plate-shaped seat plate, and the upper end rises in the upper half of the pedestal by operating a lever and descends with a load larger than a predetermined value. There is known a structure in which a gas spring is built in as a movable state and a rotatable state, and a seat body with a backrest is placed and fixed on the upper end of the gas spring via a seat body mounting base plate.

[0003]

[Problems to be solved by the invention]

 The chairs described in the above prior art are designed to create originality and novelty by devising the overall shape and color, changing the thickness of the pillars, and changing the outer diameter of the seat plate. However, it was not always possible to express sufficiently originality and novelty, and none of them was enough to dispel the rut.

[0004] In view of the above-mentioned circumstances, an object of the present invention is to provide a new chair that is conven- iently expressive of originality and novelty, and that eliminates rut.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the chair according to the present invention comprises a three-dimensional pedestal having a pyramid shape or a rectangular parallelepiped shape, and a pedestal mounting plate provided at a central portion of the top surface of the three-dimensional pedestal. A shaft cylinder with a bottomed cylindrical shape is erected on the pedestal mounting plate, with the upper half of the shaft pierced above the pedestal mounting plate and the lower half also protruding downward. And a rotatable gas spring built-in and a seat mounting plate fixed to the upper end thereof, and a backrest mounted on the seat mounting plate. With the seat body mounted and fixed,

Further, concave notches are provided at front, rear, left and right portions of the lower surface of the left and right side plates, and when weight is added to the concave notches when a user sits on the wheels, the wheels are completely immersed therein. When the weight is released, a caster of a type in which the lower part of the wheel protrudes due to the force of the built-in spring is fixed.

[0007]

【Example】

 The first embodiment shown in FIGS. 1 to 4 is as follows. That is, the front ends and the rear ends of the upper sides of the left and right side plates 1 and 2 each having a trapezoidal frame shape are defined by a front upper horizontal rod 3 and a rear upper horizontal rod 4, and the middle positions of the lower sides are similarly defined by a lower horizontal rod 5. To form a footrest 6 by connecting the front and rear ends of the left and right side plates 1 and 2, respectively. A rear rod 9 for attaching a pillar is disposed inside the rear upper lateral rod 4, and both ends of the front rod 8 for attaching the pillar and the rear rod 9 for attaching the pillar are attached to the upper sides of the left and right plates 1 and 2. A three-dimensional pedestal 10 having a pyramid shape is configured by being fixed inside the base.

Further, a pedestal mounting plate 11 is passed and fixed between an intermediate position of the pedestal mounting front rod 8 and an intermediate position of the pedestal mounting rear rod 9, and is provided at the center of the pedestal mounting plate 11. A shaft cylinder 12 having a bottom cylindrical shape is erected on the pillar mounting plate 11 such that the upper half thereof also projects downward from the lower half. A gas spring (not shown) is provided in the shaft cylinder 12. The upper end 13 is provided as a state in which the upper end 13 is raised and lowered by operation of the lever 14 and a load greater than a predetermined value and is rotatable, and the seat body mounting base plate 15 is fixed to the upper and lower and rotatable upper end 13. A leg 16 is formed, and a seat 18 with a backrest 17 is placed and fixed on the seat mounting plate 15.

In some cases, a gas spring that automatically returns to its original position regardless of the height of the seat 18 at any height may be used.

Further, on the lower surface of the left and right side plates 12, front and rear left and right concave notches 19 are provided at positions inside the front, rear, left and right landing studs 7, and in each of the concave notches 19, a seat for a user is provided. When the weight is applied, the wheels 20 are completely immersed therein, and when the weight is released, the lower part of the wheels 20 is protruded by the force of the built-in spring 21. 22 is fixed.

The second embodiment shown in FIGS. 5 to 7 has substantially the same configuration as the first embodiment, except that the left and right plates 1 and 2 have a shape in which a U-shape is inverted. , The lower horizontal rod 5, the landing stud 7, and the caster 22 are different.

[0012]

[Effect of the invention]

 The chair according to the present invention has a three-dimensional structure in which the pedestal portion has a pyramid shape or a rectangular parallelepiped shape, and the pedestal portion has an upper half penetrating above the pedestal mounting plate. The lower half which is put out and is hidden in the pedestal portion is a short one, which can express remarkable originality and novelty. In particular, the chair according to claim 2 is the lower surface of the left and right side plates. A concave notch is provided at each of the front, rear, left and right, and when the weight of the user is seated in each of these concave notches, the wheels are completely immersed in the same and the weight of the built-in spring is used when the weight is released. Is fixed to a caster in which the lower part of the wheel has a protruding part, so that if you want to change the entire position from the position where it is placed to another position, you must keep the weight off. Caster wheels automatically This is convenient because it can be moved easily when it is out and it is convenient, and this also reveals even more originality and novelty. It is very effective to achieve the purpose completely

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a first embodiment.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a partially cut-away enlarged side view showing a caster mounting portion.

FIG. 5 is an overall perspective view showing a second embodiment.

FIG. 6 is a front view of the same.

FIG. 7 is a side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Left side board 2 Right side board 3 Front upper side bar 4 Rear upper side bar 5 Lower side bar 6 Footrest 7 Flooring stud 8 Front side rod for mounting a pillar 9 Rear side rod for mounting a pillar 10 Three-dimensional base 11 Mounting plate 12 Shaft tube 13 Upper end 14 Lever 15 Seat mounting plate 16 Leg 17 Backrest 18 Seat 19 Concave notch 20 Wheel 21 Spring 22 Caster

Claims (2)

[Utility model registration claims] 1. A three-dimensional pedestal having a pyramid shape or a rectangular parallelepiped shape, a pillar mounting plate provided at a central portion of a top surface of the three-dimensional pedestal, and a bottomed cylindrical shape formed on the pillar mounting plate. A shaft cylinder is provided with its upper half standing above the pillar mounting plate, with its lower half protruding downward. That the gas spring, which is lowered and is rotatable, is built in, and a seat mounting base plate is fixed to the upper end, and the seat with the backrest is mounted and fixed on the seat mounting plate. Chair featuring. 2. A concave notch is provided at the front, rear, left and right portions of the lower surface of the left and right plates, and when weight is added to the concave notch when a user sits on the wheel, the wheel is completely immersed in the weight. 2. The chair according to claim 1, wherein a caster of a type in which a part below the wheel protrudes by the force of a built-in spring is fixed when is released.