JP2022111109A - Chair - Google Patents

Abstract

To provide a chair capable of easily replacing a cloth material covering a chair body.SOLUTION: A chair has a constitution in which a cover sheet material 6 constituted of a cap-like knitting is attached to a body 10 constituted of a seat part 2, a backrest part 3 and armrest parts 4a, 4b so as to cover the whole body 10. An apex part 62 of the cover sheet material 6 is pulled and fixed to a center part of the body 10, and an opening part of the cover sheet material 6 is expanded to the outside of the body 10, and attached thereto by covering from the outside.SELECTED DRAWING: Figure 6

Description

TECHNICAL FIELD The present invention relates to a chair, and more particularly to a chair covered with a stretchable sheet material.

2. Description of the Related Art Conventionally, stretchable cloth materials such as knits have been used as chair covers. The conventional method of use was simply to separately cover the members that make up the base and the members that make up the backrest.

JP 2019-33922

However, in the above-described conventional covering with cloth material, there is a problem that it is difficult to replace only the covering cloth material when the covering cloth material becomes dirty. In addition, there is a problem that the covering material must be made according to the shape of each chair, resulting in high cost.
SUMMARY OF THE INVENTION An object of the present invention is to provide a chair in which the cloth covering the chair body can be easily replaced.

The present invention for solving the above problems has the following configuration.
(1) a seat on which a person sits;
a main body having a backrest erected on the back side of the seat;
A chair comprising a leg supporting the seat from below,
having a telescoping opening and an engaging portion provided on the opposite side of the telescoping opening,
further comprising a cylindrical covering sheet material formed so that the cross section gradually increases from the engaging portion toward the telescopic opening;
The covering sheet material is configured to be stretchable in a circumferential direction centering on the engaging portion and in a direction from the engaging portion toward the expansion/contraction opening,
The engaging portion is connected to the vicinity of the connecting portion between the seat portion and the backrest portion, and the edge of the expansion and contraction opening portion is located on the outer bottom portion of the chair body,
A chair characterized by covering a chair body from the inside to the outside in a state of being expanded from an engaging part toward an expansion/contraction opening.

According to the first aspect of the present invention, the cover sheet can be easily replaced.

1 is an overall perspective view of a chair of the present invention; FIG. It is a cross-sectional side view of the same. It is the whole perspective view of a chair main body. FIG. 4 is an overall view of the covering sheet material in a folded state; FIG. 4 is an enlarged view of a portion of the covering sheet material that is engaged with the main body; Fig. 10 is an overall perspective view showing the process of attaching the covering sheet material to the main body; Fig. 3 is an overall perspective view from the bottom side showing a state in which the covering sheet material is attached to the main body; It is a partial front sectional view of a chair.

The chair of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is an overall perspective view of a chair of the present invention, and FIG. 2 is a side cross-sectional view. A chair 1 of the present invention comprises a main body having a seat portion 2 on which a person sits, a backrest portion 3 erected on the back side of the seat portion, and armrest portions 4a and 4b provided on both sides of the seat portion. 10, legs 5 that support the seat from below, and a covering sheet material 6 that covers substantially the entire surface of the main body 10. As shown in FIG.

The main body 10 accommodates the seat portion 2, the backrest portion 3, and the left and right armrest portions 4a and 4b inside a substantially circular frame when viewed from the front. 3 is connected to the upper portion of the frame, and the upper ends of the left and right armrests 4a and 4b are connected to the left and right portions of the frame, respectively. As for the overall shape of the main body 10, the front end portion of the seat portion 2, the upper end portion of the backrest portion 3, and the upper ends of the left and right armrest portions 4a and 4b are connected to each other, so that the overall shape of the main body 10 is circular along the shape of the frame. Alternatively, it is configured to have an elliptical shape. The seat portion 2, the backrest portion 3, and the armrest portions 4a and 4b are constructed by laminating a plate material such as plywood and a cushioning material such as urethane, which has rigidity to the extent that it can maintain its shape even when a person sits on it. It is equipped with a cushioning material on the inside where people sit and a board on the outside.

Specifically, as shown in FIG. 2, the seat portion 2 has a plate member 21 on the lower side and a cushioning material 22 on the upper side of the plate member 21. Similarly, the backrest portion 3 has a A plate member 31 is provided on the front side of the plate member 31, and a cushioning member 32 is provided on the front side of the plate member 31. Between the seat portion 2 and the backrest portion 3, a gap 11 is provided as a locking portion. Although not shown, the armrests 4a and 4b connected to both sides of the seat 2 are made of an outer plate material and an inner cushioning material, like the seat 2 and the backrest 3. .
As shown in FIG. 3, the main body 10 constructed as described above is covered with a covering sheet material 6 as shown in FIG. The covering sheet material 6 is a cap-shaped sheet material made of knitted fabric, and is configured to be stretchable in the circumferential direction of the cap and from the apex of the cap toward the opening.

As the thread that constitutes the knitted fabric of the covering sheet material 6, for example, a thread that is composed of polyester fibers kneaded with natural ore black silica can be used. The covering sheet material 6 made of such threads has the function of keeping the body temperature constant by accumulating the body temperature of the human body in contact with the fibers by utilizing the far-infrared rays from the ore in the fibers. Therefore, it is possible to provide the user with a warm sensation in cold places and a comfortable sensation in hot places.

As shown in FIG. 4, the covering sheet material 6 knitted into a cap shape has a cap opening 61 and a cap apex 62. A mouth strap 611 is inserted over the circumference, and the opening 61 can be narrowed by pulling the end of the mouth strap 611 exposed to the outside.
String-like connecting portions 62 a , 62 b , 62 c are connected to the vertex portion 62 to be engaged with the gap 11 of the main body 10 . Hook-like connectors 63a, 63b, and 63c (only 63b is shown in FIG. 2) are connected to the tips of the connecting portions 62a, 62b, and 62c.

As shown in FIG. 5, the connecting parts 62a, 62b, 62c of the covering sheet material 6 are connected to the lower end of the backrest part 3 (or the rear end of the seat part 2) in the gap 11. By hooking, it is fixed to the main body 10 side. Then, the opening 61 is widened so that the edge of the opening 61 reaches the outside of the main body 10 beyond the outer edge of the main body 10 as shown in FIG. By doing so, the covering sheet material 6 extends in all directions from the vertex 62 to the opening 61 (that is, it extends in the circumferential direction around the vertex 62 and in the radial direction). ), the opening 61 expands the most when it crosses the outer edge of the main body 10, and covers the entire body 10 from the inside (the side where the person sits) to the outside with the back side of the hat appearing on the outside. state.

Finally, the opening 61 of the covering sheet material 6 reaches the bottom of the main body 10, and as shown in FIG. By doing so, the main body 10 is reliably covered with the covering sheet material 6 , and detachment of the covering sheet material 6 from the main body 10 is suppressed.
Thus, after the covering sheet material 6 is attached, the legs 5 are attached to the bottom of the main body 10 . The leg portion 5 is formed by bending a metal bar, for example, and includes a pair of left and right front legs 51a and 51b and a pair of left and right rear legs 52a and 52b (52a is not shown).

In the chair 1 of the present invention configured as described above, when the main body 10 is covered with the covering sheet material 6 (covered state), a gap 7 is formed between the inner surface of the main body 10 and the covering sheet material 6. occurs. For example, as shown in FIG. 2, around the apex 62 of the covering sheet material 6, near the connecting portion between the seat surface and the backrest surface, and the connecting portion between the backrest surface and the inner surface of the armrest portion. The vicinity, as shown in FIG. 8, includes the vicinity of the connecting portion between the seat surface and the inner surface of the armrest. Since the covering sheet material 6 is always under tension in the pulling direction, the above-mentioned gaps are generated. Also, the covering sheet material 6 itself is covered with a predetermined margin for elongation so that it can be further stretched.

When a person sits on the seat surface in the above state, as shown in FIG. There is room for the covering sheet material 6 to stretch further according to the body shape and to fit the body. For example, when a person sits down, the covering seed material 6 is stretched as indicated by the imaginary line, stretched along the surface of the thigh LG, and closely adheres to the thigh. This further improves the holding effect of the chair on the body (the effect of the chair supporting the human body). Further, in this embodiment, the covering sheet material 6 is composed of fibers holding natural ore (for example, stone containing silica), and has the effect of far infrared rays. By stretching and increasing the area in contact with the body, the effect of far infrared rays is further improved.

In addition, since the gap 71 is maintained between the covering sheet material 6 and the armrest portion 4a, it is also suppressed that the body 10 takes away the heat of the body warmed by the far infrared rays. Furthermore, in the main body 10, by providing reflecting surfaces for reflecting infrared rays (electromagnetic waves) on the inner side surfaces CH4 of the armrests 4a and 4b, the front side surface of the backrest portion 3, and the upper surface CH2 of the seat portion 2, the covering sheet material 6 is protected from the body. Infrared rays radiated from the natural ore can be reflected toward the body to further improve the heat retaining effect. The heat retaining effect by such reflection can be fully exhibited by ensuring the gap 71 .

In the structure of the chair of the present invention, since the covering sheet material can be deformed into any shape, there is an advantage that it is not necessary to change the shape of the covering sheet material each time according to the shape of the chair. Since the attachment structure of the covering sheet material is a simple configuration of attaching the apex and tightening the mouth string of the opening, the covering sheet material can be replaced more easily.

A more comfortable chair can be provided by mixing a functional material such as natural ore black silica into the cushioning materials constituting the seat portion 2, the backrest portion 3 and the armrest portions 4a and 4b. In addition, a covering sheet material having other functions can be prepared by constructing the covering sheet material with threads that exhibit other functions. Thus, by changing the covering sheet material, a chair having different functions can be made as appropriate.

Furthermore, it is also possible to prepare a plurality of covering sheet materials having different functions, stack the plurality of covering sheet materials, and cover the main body 10 . For example, in addition to the above-mentioned covering sheet material, a covering sheet material knitted with threads mixed with an antibacterial material is prepared, and the surface of the chair is made of a covering sheet material with an antibacterial action, and underneath it is a heat storage action. It is also possible to stack certain covering sheet materials. By stacking a plurality of covering sheet materials in this way, the chair can have a plurality of functions.

Furthermore, by making the covering sheet material with a plurality of threads having different functions, it is possible to give a single covering sheet material a plurality of functions.
The covering sheet material may be a woven fabric woven with stretchable threads instead of knitted fabric.

As described above, the chair of the present invention can also be used as an automobile seat or a wheelchair seat.

REFERENCE SIGNS LIST 1 chair 2 seat 3 backrest 4 armrest 5 leg 6 covering sheet material 7 gap

Claims (1)

A seat on which a person sits on the upper side,
a main body having a backrest erected on the back side of the seat;
A chair comprising a leg supporting the seat from below,
having a telescoping opening and an engaging portion provided on the opposite side of the telescoping opening,
further comprising a cylindrical covering sheet material formed so that the cross section gradually increases from the engaging portion toward the telescopic opening;
The covering sheet material is configured to be stretchable in a circumferential direction centering on the engaging portion and in a direction from the engaging portion toward the expansion/contraction opening,
The engaging portion is connected to the vicinity of the connecting portion between the seat portion and the backrest portion, and the edge of the expansion and contraction opening portion is located on the outer bottom portion of the chair body,
A chair characterized by covering a chair body from the inside to the outside in a state of being expanded from an engaging part toward an expansion/contraction opening.

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