JP2001104096A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair of a stool type, which has a simple height adjust function. SOLUTION: This chair includes legs 1 and a waist rest 2 movably fitted to the legs 1 to be tilted to any side taking the upper position of the leg 1 as reference, and the waist rest 2 can be held at a height different between the case of tilting in one direction and the case of tilting in the other direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair which is useful when performing kitchen work or the like while sitting down.

[0002]

2. Description of the Related Art There is a kind of chair called a high stool which can be seated in a posture close to a standing posture. In this apparatus, a seat is provided at a position suitable for the seating of a person having a standard physique, and a kitchen work or the like can be performed while keeping weight in the seat in an upright posture.

[0003]

However, when the seat is fixed, if the seat surface height does not match the physique,
There is a disadvantage that a comfortable work cannot be performed because the knee hits a front kitchen table or the like. On the other hand, it is conceivable that the seat height can be adjusted by using an elevating mechanism or the like, but it is not desirable in terms of cost and handling because the structure is complicated and the weight increases.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a chair having a simple structure and capable of easily changing the height of a seat. In addition, when supporting such a stool, a chair support mechanism having a function of easily holding the stool at a predetermined position is also realized at the same time.

[0005]

For this purpose, the chair according to the invention comprises a support and a stool movably mounted on the support so that it can fall to either side with reference to the position above the support. The stool is characterized in that the stool can be held at different heights when it falls down in one direction and when it falls down in the other direction.

With this configuration, if the chair is arranged in such a direction that the fallen stool is located behind the buttocks, a part of the weight can be effectively deposited in the standing posture. In addition, since the height of the stool can be adjusted in two steps depending on the direction in which the stool is tilted, utilization according to the physique is possible. In addition, since the position of the stool can be adjusted only by reversing the stool between the two holding positions, the operability can be made extremely good.

As a specific support structure for the stool, there is a structure in which the stool is attached to an arm rotatably supported by a support. In order to easily hold the stool at a predetermined position and not to create a gap between the arm and the support that causes finger jamming or the like, a part of the arm has a convex portion that rotates with the arm or A concave portion is provided, and the convex portion or the concave portion is supported by the concave portion or the convex portion provided on the support at a predetermined rotation position, and at least the convex portion has a portion displaced from the center of rotation of the arm. Is desirable.

In this case, it is simple that the concave portion is a cocoon-shaped hole provided so that a part of the convex portion can be inserted and the convex portion can be stopped at both ends. In order to more reliably prevent finger stuffing between the convex portion and the concave portion, the convex portion is integrally provided on a shielding plate provided at a position to close the cocoon-shaped hole from start to finish during rotation of the arm. It is effective.

[0009] In order to simplify the sitting and standing motions, it is effective to set a hand grip at a laterally protruding position between the rotation center and the rotation end of the arm. is there. In order to further increase the function by setting the stool height at three levels, it is preferable that a seat is provided on the upper end side of the support, and the stool can be moved above the seat.

In order to prevent the movable portion from being jammed with fingers at the position where the stool is mounted on the support, the position where the stool is mounted on the support is preferably set below the seat. . In addition to the above chair, the holding function of the present invention is a support, and a stool rotatably attached to the support via an arm so as to be able to fall to any side with reference to the position above the support. The present invention can be similarly applied to a chair including: That is, also in this case, a part or a part of the arm is provided with a convex part or a concave part that rotates together with the arm, and the convex part or the concave part is configured to be supported by the concave part or the convex part provided on the support at a predetermined rotation position. It is sufficient that at least a portion displaced from the center of rotation of the arm is provided on the convex portion.

Also in this case, it is effective that the concave portion is a cocoon-shaped hole provided so that a part of the convex portion can be inserted and the convex portion can be stopped at both ends. It is desirable to provide the cocoon-shaped hole integrally at the position of the shielding plate provided during the rotation.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. This chair is applied to, for example, a kitchen of a welfare facility where the elderly and the like live, and as shown in FIGS. 1 to 5, a support 1, a stool 2 supported by the support 1, And a seat 3 attached to the support 1.

The support 1 has a pair of leg elements 11 which are bent and formed into a trapezoidal shape with the lower end grounded.
And a first bridge member 12 arranged at a position connecting the upper ends of the leg elements 11 and a position connecting the lower ends of the leg elements 11 in a pair. Second
And a pair of front and rear second frame members 13 is connected by a connection member 14. The leg element 11 and the frames 12, 13 are made of round pipe members, and the second frame 13 also serves as a footrest.

A stool 2 is attached to the support 1 via an arm 4. The stool 2 is configured mainly of a roller-shaped cushion material. On the other hand, the arm 4 has a U-shaped support portion 41 on both sides of the stool 2.
Are formed in pairs, and both ends of the stool 2 are held so as not to rotate on the rotation end 41a side of the support portion 41, and the rotation center portion 41b set on the base end side is It is attached to the support 1 so that it can rotate within a certain range.

As shown in FIGS. 6 to 8, the fixing bracket 51 is attached to the horizontal seat receiving portion 11a of the leg element 11, and the rotation center portion 41b of the supporting portion 41 forming the arm 4, as shown in FIGS. The fan-shaped shielding plate 52 attached so as to be integrally rotatable is used. Fixed bracket 51
Is an inverted L-shape, and its horizontal portion 51a is
Is fixed to the upper end of the horizontal portion 11a by welding or the like, and the vertical portion 51b is disposed so as to hang down to the side of the seat receiving portion 11a of the leg element 11, and is provided on the vertical portion 51b. The shaft passage hole 51c is opened outward. On the other hand, the shielding plate 52 has a fan shape, and has a mounting hole 5 near the center of the arc.
2a, a small diameter support shaft 41c protruding from the end surface of the arm 4 penetrates through the mounting hole 52a, and the outer surface is applied to a step portion located at the base of the support shaft 41c.
It is fixed to the portion by appropriate means such as welding, and is rotatable integrally with the arm 4. And the shielding plate 5
2 is further fixed to the support bracket 41c through the fixing bracket 51.
Through the shaft passage hole 51c, and at that position,
The entire arm 4 is prevented from coming off by passing a washer 53a through 1c and fitting an E-ring 53b into a constricted portion provided at the end of the support shaft 41c. Thereby, the support portion 41 of the arm 4 supporting the stool 2 can be integrally rotated together with the shielding plate 52 around the axis of the support shaft 41c. It is possible to fall to the side.

In this embodiment, the present embodiment is provided with a stopper mechanism 6 for stopping the stool 2 at a predetermined position when the stool 2 falls down in one direction or the other direction. As shown in FIGS. 6 to 8, the stopper mechanism 6 is provided with the fan-shaped shielding plate 52 which is a rotation center of the arm 4.
And a cocoon as a concave portion provided along the rotation locus of the shaft portion 61 on the vertical portion 51b of the corresponding fixed bracket 51 at a position displaced from the shaft passage hole 52a through the hole 52b. And a shielding plate 52
When superposed on the vertical portion 51b of the fixing bracket 51, the shaft portion 61 is inserted into the cocoon-shaped hole 62. The cocoon-shaped hole 62 has an angle from a reference point P (see FIG. 8) located directly above the shaft passage hole 51c to an end 62a located in one direction and an end located in the other direction. The angle up to the portion 62b is different from the shaft portion 61b.
The movement range is restricted within these ends 62a and 62b. The arm 4 is tilted and held at an angle θ1 (approximately 47 °) at a position where the shaft 61 hits the wall of one end 62a, and is held at a position where it hits the wall of the other end 62b. 4 can be held at an angle θ2 (approximately 35, 5 °). During this time, the shielding plate 52 rotates with the arm 4 while constantly rotating the cocoon-shaped hole 62.
Is set to block.

The seat receiving portion 11a of the support 1 has
The seat 3 described above is attached. The seat 3 has a disk shape, and includes a seat receiving portion 11 a and a horizontal portion 51 of a bracket 51.
a through hole 3a in the vertical direction for attaching the seat 3 to the
A screw 3b penetrating through the through hole 3a from below is screwed into the lower surface of the seat 3, so that the seat 3
Is attached to the support 1.

As described above, in the chair of the present embodiment, the stool 2 movably mounted on the support 1 is fixed at the predetermined angle θ.
1, because it is held in a position that has fallen by θ2, by arranging this chair in the orientation where the fallen stool 2 is located behind the hips, a part of the weight can be effectively deposited in the standing posture for a long time. Kitchen work etc. can be performed easily.

Further, in the present embodiment, the stool 2 is held at a different height position when it falls down in one direction and when it falls down in the other direction with reference to the position above the support 1. . That is, in this embodiment, the diameter of the stool 2 is 80
mm, the height h1 from the floor to the upper end when it falls down in one direction (see FIG. 3) is about 710 mm, and the height h1 from the floor to the upper end when it falls down in the other direction (see FIG. 9). The height h2 is set to about 740 mm. For this reason, depending on which direction the stool 2 is tilted, the height can be adjusted in two stages, and it is easy to secure a suitable use form by selecting one according to the physique. . In addition, since the position adjustment of the stool 2 can be performed only by the operation of inverting the arm 4 supporting the stool 2 between the two holding positions, the operability can be made extremely good.

In particular, the stool 2 is connected to the rotating end 4 of the arm 4.
1a, the rotation center 41 of the arm 4
Since b is merely rotatably attached to the support 1, the structure is simple, and the arm 4 can be effectively used as an operation unit. Further, the arm 4 is provided with a shaft portion 61 which is displaced from the rotation center portion 41b and rotates together with the arm 4, and the shaft portion 61 is connected to the end portions 62a, 62b provided on the support 1 at a predetermined rotation position. , A highly stable height adjustment mechanism can be configured with a simple structure, and the arm 4 and the support 1 can be connected to each other by housing the shaft 61 in the hole 62. It is possible to minimize the formation of a gap that causes finger stuffing or the like during the close contact.

In particular, since the stopper mechanism is a cocoon-shaped hole 62 into which a part of the shaft portion 61 can be inserted between the end portions 62a and 62b, it can be easily formed in the bracket 51. Further, at the rotation center 41b of the arm 4,
Since the shielding plate 52 that closes the cocoon-shaped hole 62 while being rotated together with the arm 4 is provided, and the shaft portion 61 is attached to the shielding plate 52, there is a danger that a finger jam occurs between the shaft portion 61 and the hole 62. Since the shielding plate 52 also serves as a support member for the shaft portion 61, the number of components can be shared.

Further, the supporting portion 41 constituting the arm 4
Since the side protruding position between the rotation end 41a and the rotation center 41b can be used as the hand grip H,
A simple operation can be achieved by assisting the sitting motion and the standing motion. In addition to the above, in this embodiment, the seat 3 is provided on the upper end side of the support 1 so that the stool 2 can move above the seat 3. A seating posture is also obtained, and the chair can be used as a chair having substantially three levels of height adjustment functions.

In the chair of the present embodiment, the attachment position of the stool 2 to the support 1, that is, the position where the support shaft 41 c is supported, is set inside and below the outer edge of the seat 3. It is possible to effectively prevent the movable portion from squeezing a finger or the like at the attachment position of the stool 2 to the support 1. The specific configuration of each unit is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above embodiment, the arm is supported bilaterally, but may be supported cantilevered. In addition, the holding function used in the above embodiment includes a support and a stool rotatably attached to the support via an arm so as to be able to fall to any side with reference to the position above the support. The same can be applied to any chair provided with such a chair.

[0024]

The present invention is embodied in the form described above and has the following effects. That is, the chair of the present invention, when attaching a stool to the support so as to be able to fall to any side with reference to the upper position of the support, when the stool falls in one direction and in the other direction It is configured such that it can be held at a different height position.

Therefore, it is possible to effectively provide a height adjusting function capable of coping with a difference in physique, while not adversely affecting the simplification of the structure and the weight reduction. Can be effectively deposited for long-term kitchen work or the like. In particular, if the stool is rotatably attached to the support using the arm, not only the structure is simple, but also the arm can function as an operation unit, thereby improving the operability. .

Also, a convex portion is provided on one of the arm and the support, and a concave portion is provided on the other, so that the convex portion hits a wall portion of the concave portion at a predetermined rotation position of the arm and is supported. If the projection is set at a position displaced from the center of rotation of the arm, an adjustment mechanism with high stability during use with a simple structure can be configured, and by housing the projection in the recess. The arm and the support are brought into close contact with each other, so that generation of a gap that causes finger stuffing or the like can be eliminated as much as possible.

If the recess is constituted by a cocoon-shaped hole,
It can be easily made using a bracket or the like.
Furthermore, if the convex portion is provided integrally with the shielding plate provided at a position that closes the cocoon-shaped hole during the rotation of the arm, it is possible to effectively prevent finger jamming between the convex portion and the concave portion. Thus, the number of parts can be reduced.

Further, by protruding the side of the arm so that the side protruding position can be used as a hand grasping portion, the arm can be assisted in sitting and standing up to improve the usability. Can be. In addition to the above, if a seat is provided on the upper end side of the support and the stool can be moved above the seat, it can be used as a chair having a three-stage height adjustment function. .

Further, if the position of attachment of the stool to the support is set below the seat, it is possible to effectively prevent the movable portion at the attachment position from being jammed with fingers. On the other hand, the stool holding mechanism as described above in the present invention is rotatably attached to the support via an arm so as to be able to fall to any side with reference to the upper position of the support. The present invention can be widely and generally applied to a chair having a stool and is useful.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a right side view of the same.

FIG. 4 is a plan view of the same.

FIG. 5 is a bottom view of the same.

FIG. 6 is an exploded perspective view of the same.

FIG. 7 is a longitudinal sectional view of the main part.

FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7;

FIG. 9 is an explanatory view of the operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Support body 2 ... Stool 3 ... Seat 4 ... Arm 41a ... Rotation end part 41b ... Rotation center part 52 ... Shielding plate 61 ... Convex part (shaft part) 62 ... Concave part (hole) 62a, 62b ... End part

Claims (11)

[Claims] 1. A stool which is movably mounted on a support so as to be able to fall to any side with reference to a position above the support, wherein the stool is moved in one direction. A chair characterized in that it can be held at different heights when it falls down and when it falls down in another direction. 2. The chair according to claim 1, wherein the stool is attached to an arm rotatably supported by a support. 3. A part of an arm is provided with a convex or concave part which rotates together with the arm, and the convex or concave part is supported by a concave or convex part provided on a support at a predetermined rotation position. 3. The chair according to claim 2, wherein at least the projection has a portion displaced from the rotation center of the arm. 4. The chair according to claim 3, wherein the concave portion is a cocoon-shaped hole provided so that a part of the convex portion can be inserted and the convex portion can be stopped at both ends. 5. The chair according to claim 4, wherein the convex portion is integrally provided on a shielding plate provided at a position for closing the cocoon-shaped hole during the rotation of the arm. 6. The chair according to claim 2, wherein a hand grip is set at a laterally protruding position between the rotation center and the rotation end of the arm. 7. The seat according to claim 1, wherein a seat is provided on an upper end side of the support, and the stool is movable above the seat. Chair. 8. The seat according to claim 1, wherein the position of attachment of the stool to the support is set below the seat.
The chair according to 4, 5, 6, or 7. 9. A vehicle comprising: a support; and a stool rotatably attached to the support via an arm so as to be able to fall to any side with reference to the position above the support. A part of the arm is provided with a convex part or a concave part that rotates together with the arm, and the convex part or the concave part is supported by the concave part or the convex part provided on the support at a predetermined rotation position. A chair, wherein the projection has a portion displaced from the center of rotation of the arm. 10. The chair according to claim 9, wherein the concave portion is a cocoon-shaped hole provided so that a part of the convex portion can be inserted and the convex portion can be stopped at both ends. 11. The chair according to claim 10, wherein the projection is provided integrally with a shielding plate provided at a position for closing the cocoon-shaped hole during the rotation of the arm.