JP2007054183A - Hybrid chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hybrid chair for children which has advantages of both a swivel chair and a wooden seat. <P>SOLUTION: In a hybrid chair 1, a seat 2 is supported by a support rod 3. The height of the seat 2 can be easily adjusted by operation of a gas-cylinder through operation of an operation handle 13. While, a leg base 4, a pair of bars 5 and a back plate 6 are structured in a conventional wooden seat style to achieve a totally stable organization. Then, the hybrid chair 1 has a new structure with an advantage of the conventional swivel chair and an advantage of a wooden chair. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a chair of a novel form that combines the advantages of a wooden chair and the advantage of a swivel chair, that is, a hybrid chair, and more particularly, to a hybrid chair for children sitting toward a learning desk or the like.

Currently, about 70% of the chairs for children sitting at a learning desk etc. are on the market.
Each of the swivel chair and the wooden chair from the viewpoint of a chair for children has advantages and disadvantages.
The swivel chair can easily adjust the height of the seat plate with a gas cylinder, and the seat plate is comfortably seated by a cloth tension type, a synthetic leather type or the like. Further, the entire chair can be moved by a caster and the seat plate can also be rotated. Therefore, there is an advantage that the adaptability at the time of sitting is good.

  However, these benefits can be a drawback for small children. That is, when the foot of the child seated on the seat plate does not reach the floor, there is a drawback that it is difficult to place the rotatable chair movable by a caster in a desired position or to direct the seat plate to a desired position. In addition, the swivel chair is usually supported by five legs that radiate from the center. However, when a child rides on the seat board and rotates or tilts it, the swivel chair moves in an unexpected direction. There was a risk of moving or falling.

Then, what attached the footrest to the rotation chair is proposed (patent document 1).
On the other hand, the lower end of the wooden chair has a rectangular shape in plan view, and is stably placed on the floor surface. In addition, since the seat plate does not rotate freely, it does not play by rotating the seat plate when a child sits down, and has a safe and stable structure. However, in the case of a wooden chair, since the mechanism for adjusting the height of the seat plate in accordance with the child's physique is usually configured with screws or the like, there is a problem that the adjustment is troublesome. This type of wooden chair is disclosed in Patent Documents 2 and 3.
JP 2004-321672 A Japanese Patent Laid-Open No. 2000-253962 JP 2002-65413 A

The main object of the present invention is to provide a hybrid chair that has only the advantages of a conventional swivel chair and a wooden chair, and that can be used comfortably for a child or a small seated person.
Another object of the present invention is to provide a hybrid chair that is based on the design of a wooden chair, that allows easy adjustment of the seat plate and that can be moved back and forth, and that has good stability. .

  According to the first aspect of the present invention, there is provided a seat plate for placing a seated person's buttocks, and a vertically extending vertical support for supporting the seat plate so as to be rotatable and movable up and down, and the upper end is the center of the lower surface of the seat plate. A support frame, a left frame extending horizontally in the front-rear direction, a right frame extending horizontally in the front-rear direction, and a connection frame connecting the left frame and the right frame. The leg base to which the lower end of the column is attached, the front lower part and the rear lower part of the left frame, and the front lower part and the rear lower part of the right frame, respectively, are provided to make the leg base movable along the floor surface. Caster, left bar that rises diagonally upward from the front edge of the left frame, and right that rises diagonally upward from the front edge of the right frame Each bar has a pair of left and right bars that interfere with the left and right side edges of the seat plate to prevent the seat plate from rotating, and the left and right sides of the bar by the upper ends of the pair of left and right bars. And a back plate provided to connect between the upper ends of the pair of left and right bars.

The invention according to claim 2 is the hybrid chair according to claim 1, characterized in that the support column includes a gas cylinder type telescopic unit whose vertical length can be varied.
The invention according to claim 3 is characterized in that a footrest that projects forward from the support and on which a seated person can put his / her foot is attached below the support. It is.

  The invention according to claim 4 is the hybrid chair according to any one of claims 1 to 3, wherein the connecting frame is provided with a placement surface on which an object is placed on the rear side. .

According to the first aspect of the present invention, the seat plate is rotatably supported by the support column and can be moved up and down so that the height thereof can be adjusted in the same manner as a conventional rotary chair.
On the other hand, the leg base has a left frame, a right frame, and a connecting frame, and the ends of the left and right frames are located at the four front and rear and left and right corners in plan view. Since the lower end of the column is supported by such a leg base, the seat plate is stably supported. Since the casters are provided at the front and rear and the four corners on the left and right of the leg base, the entire chair can be easily moved on the floor surface.

Further, the left and right bars rising obliquely upward from the front ends of the left and right frames interfere with the left and right side edges of the seat plate to prevent the seat plate from rotating.
A seat board and a support | pillar can be made using the structure of the conventional rotation chair, and can prevent that a seat board rotates freely by simple structure. The pair of left and right bars serve to support the backboard, and the overall shape is a chair to which the function of a conventional swivel chair is added based on the shape of a conventional wooden chair.

Such a chair is easy to use for children and small physicists.
In the invention of claim 2, the height of the seat plate can be easily and freely adjusted by the gas cylinder.
In the invention according to claim 3, a seated person with a small physique can put his / her foot when the foot cannot reach the floor, which is convenient.

In the invention according to claim 4, by using the rear side of the connecting frame, the space can be used effectively as in a conventional wooden chair, and small items and the like can be accommodated.
As described above, the present invention can be an easy-to-use hybrid chair provided with the advantages of a swivel chair and the advantages of a wooden chair.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a hybrid chair according to an embodiment of the present invention. The hybrid chair 1 includes a seat plate 2 on which a seat occupant rests, a column 3 supporting the seat plate 2, a leg base 4 supporting the column 3, and the leg base 4 from the front to the rear. A pair of bars 5 rising obliquely upward, a back plate 6 provided between the upper ends of the bars 5, casters 7 attached to the lower surface of the leg base 4, and footrests 8 attached to the support columns 3 And have.

  The features of the hybrid chair 1 are that the seat plate 2 is supported by a single column 3 and that the height of the seat plate 2 can be easily adjusted as in the case of a conventional rotary chair, and the leg base 4, The configuration of the bar 5 and the back plate 6 adopts the form of a conventional wooden chair, and as a whole, a configuration with good stability is realized. That is, the hybrid chair 1 has a novel structure that is constructed by taking out the advantages of the conventional swivel chair and the advantages of the wooden chair.

FIG. 2 is a front view of the hybrid chair 1, and FIG. 3 is a right side view of the hybrid chair 1.
1 to 3, the seat plate 2 of the hybrid chair 1 has a substantially square shape with rounded corners in plan view, and the upper surface of the seat plate 2 is stable and elastic on the seated person's buttocks. For example, it is covered with a cloth cover. In the cloth cover, an elastic body such as urethane is disposed.

  Below the seat plate 2, a support column 3 that supports the seat plate 2 is provided. The support column 3 includes a base tube 9 that extends vertically up and down, and a shaft 10 that is provided coaxially with the base tube 9 and extends above the base tube 9. The upper end of the shaft 10 is connected to the center of the lower surface of the seat plate 2 via the height adjustment operation unit 11. A lower portion of the base tube 9 is attached to the center of the leg base 4 (a center portion in plan view) using an attachment member 12.

The height adjustment operation unit 11 is provided with an operation handle 13, and by operating this operation handle 13, the support column 3 can adjust the amount of protrusion of the shaft 10 from the base tube 9 by the action of the built-in gas cylinder. Can be adjusted. Therefore, the height of the seat plate 2 can be changed from the height of the solid line to the height indicated by the two-dot chain line, as shown in FIGS.
Thus, the seat board 2 is supported by the same support | pillar as what is provided in the conventional rotation chair, The height can be easily adjusted using a gas cylinder mechanism.

Moreover, the support | pillar 3 is supporting the seat board 3 rotatably. However, as will be described later, the rotation of the seat plate 2 is blocked by the pair of bars 5, and the situation where the seated person is seated and the direction when the seated person is seated by the seat plate 2 rotating freely is prevented. ing.
FIG. 4 is a plan view of the leg base 4. The leg base 4 includes a left frame 14 extending linearly in the front-rear direction, a right frame 15 extending linearly in the front-rear direction, and a horizontal connecting frame 16 connecting the left frame 14 and the right frame 15. Including. The connecting frame 16 is disposed on the front side, and a left connecting frame 17 extending horizontally and diagonally rearward from the front end of the left frame 14 and a right extending diagonally rearward and horizontally from the front end of the right frame 15. The connecting frame 18 is provided with a mounting member 12 of the support column 3 provided at the junction of the left connecting frame 17 and the right connecting frame 18. The connection frame 16 further includes a mounting plate frame 20 having a rectangular shape in a plan view and connecting a rear side between the left frame 14 and the right frame 15 and having a shallow dish shape.

In the leg base 4 of this form, each frame can be formed as a separate body, but in this embodiment, each of these frames is formed as a single piece by a resin material.
The upper surface of the mounting frame 20 is formed with a large number of small concaves or convexes having a circular shape so as not to slip when an object is placed.
Referring to FIGS. 2 to 4, bar attachment portions 21 and 22 protruding upward are provided at the front ends of the left frame 14 and the right frame 15. The left bar 5 is attached to the bar attaching portion 21 so as to rise obliquely upward from the front end of the left frame 14 toward the rear. Similarly, the bar 5 is attached to the bar attachment portion 22 of the right frame 15 so as to rise obliquely upward from the front end of the right frame 15 toward the rear.

Both ends of the back plate 6 are attached to the upper ends of the pair of bars 5. The back plate 6 is provided so as to connect the upper ends of the pair of bars 5.
In this embodiment, a lock button 23 is provided on each of the left and right sides of the back plate 6. When the lock button 23 is pressed, the back plate 6 can be displaced obliquely up and down along the pair of bars 5. That is, the height of the back plate 6 can be adjusted.

By the way, the pair of bars 5 that rise obliquely upward from the front to the rear are disposed on both sides of the seat plate 2 and are close to or in contact with the left and right side edges of the seat plate 2. For this reason, when it is going to rotate the seat board 2, the left-right side edge of the seat board 2 interferes with a pair of bar | burr 5, and the rotation is blocked | prevented.
Casters 7 are attached to the lower surface of the leg base 4 at the four corners, respectively. More specifically, casters 7 are provided at the front and rear ends on the lower surface side of the left frame 14 and at the front and rear ends on the lower surface side of the right frame 15, respectively. Therefore, the hybrid chair 1 can be moved lightly along the floor surface by a caster.

The hybrid chair 1 according to this embodiment further includes a footrest 8. The footrest 8 is provided for placing a foot when the seated person is a small child and the foot of the seated person does not reach the floor surface.
FIG. 5 shows a plan view of the footrest 8. The footrest 8 is formed of, for example, resin, and includes a mounting portion 24, an arm 25 projecting forward of the mounting portion 24, and a footrest 26 extending in the left-right direction at the tip of the arm 25. Yes. A mounting hole 27 through which the base tube 9 of the support column 3 is passed is formed in the mounting portion 24. A fixing screw 28 is provided to prevent the base tube 9 and the mounting portion 24 passed through the mounting hole 27 from moving relative to each other.

The footrest 8 can be removed when the seated person is not a small person such as a child.
The hybrid chair according to the present invention is not limited to the contents of the above-described embodiment, and various modifications can be made within the scope of the claims.

1 is a perspective view of a hybrid chair according to an embodiment of the present invention. It is a front view of a hybrid chair. It is a right view of a hybrid chair. It is a top view of a leg base. It is a top view of a footrest.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hybrid chair 2 Seat board 3 Support | pillar 4 Leg base 5 Bar 6 Back board 7 Caster 8 Footrest 14 Left frame 15 Right frame 16 Connection frame 20 Mounting base frame 26 Footrest

Claims (4)

A seat plate for placing the butt of the seated person,
A column that extends vertically up and down to support the seat plate so that it can rotate and move up and down, and has an upper end connected to the center of the lower surface of the seat plate;
Including a left frame that extends horizontally in the front and rear, a right frame that extends horizontally in the front and rear, and a connecting frame that connects the left frame and the right frame. A leg base,
Four casters attached to the front lower part and the rear lower part of the left frame and the front lower part and the rear lower part of the right frame, respectively, and making the leg base movable along the floor surface;
The left frame has a left bar that rises obliquely upward from the front end of the left frame and a right bar that rises obliquely upward from the front end of the right frame, and each bar has a left and right side of the seat plate. A pair of left and right bars that interfere with the side edges and prevent the seat plate from rotating;
A back plate that is supported on the left and right sides by the upper ends of a pair of left and right bars and is connected to connect the upper ends of the pair of left and right bars;
A hybrid chair characterized by including.   The hybrid chair according to claim 1, wherein the support column includes a gas cylinder expansion / contraction unit whose vertical length is variable.   The hybrid chair according to claim 1 or 2, wherein a footrest is attached below the support post so as to project forward from the support post and on which a seated person can put his / her foot.   The hybrid chair according to any one of claims 1 to 3, wherein the connection frame includes a mounting surface on which an object is placed on a rear side.

Images