JP6864551B2 - Stackable chairs - Google Patents

Description

The present invention relates to a seat and a chair using the seat.

Conventionally, chairs that can be stacked and stored vertically have been proposed. For example, a recess having substantially the same shape as the upper edge of the chair seat is provided by being recessed upward on the lower surface of the seat, and the recess is downward from the deepest portion on the edge side of the seat toward the central region. It has been proposed to form it so that it slopes. Provided is a chair capable of stably stacking an upper chair seat on an upper portion of a lower chair seat without complicating the structure (Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-86840

However, chairs that can be stacked and stored emphasize the efficiency of storage when stacked, and their sitting comfort does not necessarily reach a satisfactory level.

The present invention relates to a seat and a chair that can secure an excellent sitting comfort while reducing the number of parts without increasing the height even when the chairs are stacked.

The seat for a chair of the present invention includes a bottom member having a convex portion recessed downward, and a soft cushion portion in which at least a part in the height direction is housed in a space defined by the convex portion. .. Further, the chair of the present invention uses this seat.

According to the seat and chair of the present invention, excellent sitting comfort can be ensured without increasing the height even when the chairs are stacked.

FIG. 1 is a perspective view of the chair of the present invention. 2A and 2B show a seat applied to the chair of the present invention, FIG. 2A shows a perspective view seen from above, and FIG. 2B shows a perspective view seen from below. In FIG. 3, a part of the first cushion portion located at the upper part of the seat is cut out. It is a figure which shows the state which exposed the inside of a seat. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 2 (a). FIG. 5 is a side view showing a state in which two chairs are stacked.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of the chair 1 according to the embodiment of the present invention. The chair 1 is a so-called stack type chair in which a plurality of chairs can be stacked one above the other. The chair 1 includes a back 3, a seat 10 provided in front of the back 3, and legs 5 provided below the back 3 and the seat 10. The shape of each part is not limited to that of the embodiment. Further, the chair 1 of the present embodiment includes an armrest 7 provided on the side of the back 3, but the armrest 7 is not an indispensable member.

2A and 2B show a seat 10 for a chair 1, FIG. 2A shows a perspective view seen from above, and FIG. 2B shows a perspective view seen from below. The seat 10 is surrounded by a substantially flat seat surface 11 on the upper side, a curved surface 12 on the front side on the upper side, and a lower surface 13 on the lower side. A part of the lower surface 13 forms a convex portion 14 projecting downward.

FIG. 3 is a perspective view showing the inside of the seat 10. The seat 10 includes a bottom member 20 made of hard resin, metal, or the like, a first cushion material 22, and a second cushion material 24. FIG. 3 shows a state in which a part of the first cushion member 22 located at the upper part of the bottom member 20 is cut off to expose the inside of the seat 10. Since the seat 10 has such a simple structure, it is easy to manufacture and the manufacturing cost can be suppressed. In particular, by adopting the bottom member 20, it is possible to omit the lower cover that is seen in a general seat, and it is possible to reduce the number of parts.

FIG. 4 is a cross-sectional view taken along the line AA of FIG. 2 (a). The convex portion 14 recessed downward of the bottom member 20 defines a space S inside thereof, and the entire second cushion material 24 is housed in the space S. It can be understood that the first cushion material 22 and the second cushion material 24 stacked in the height direction constitute a soft cushion portion, and in this case, at least a part of the cushion portion in the height direction is formed. It is stored in space S. The first cushion material 22 is arranged above the second cushion material 24 and the bottom member 20.

According to the present embodiment, the cushion portion including the first cushion material 22 and the second cushion material 24 can secure a thickness of a predetermined value or more, and can provide a comfortable sitting comfort. .. On the other hand, at least a part of the cushion portion in the height direction (corresponding to the second cushion material 24) is housed in the space S, and even if the thickness of the cushion portion increases, the thickness of the seat 10 is suppressed. It is possible to do.

The first cushion material 22 includes a main body 22a made of, for example, urethane or the like, and a cloth material 22b arranged on the surface of the main body 22a. The second cushion material 24 is made of, for example, a fibrous resin or the like. Of course, the type of material for these members is not particularly limited. For example, the hardness of the second cushion material 24 and the hardness 22 of the first cushion material 22 can be made different. In particular, it is preferable to set the hardness of the second cushion material 24 to be larger than the hardness of the first cushion material 22. According to such a configuration, it is possible to provide a more comfortable sitting comfort.

In the present embodiment, a combination of two cushioning materials is used, but the number of cushioning materials to be combined may be three or more and is not particularly limited. By changing the combination of two or three or more cushioning materials, the material, hardness, etc. of each cushioning material can be changed, and the sitting comfort can be easily adjusted to pursue a more comfortable sitting comfort. Is possible.

FIG. 5 is a side view showing a state in which two chairs 1, 1A are stacked in the height direction. The illustration of the armrest 7 is omitted. As described above, since the thickness of the seat 10 is suppressed, the height d of the stacking can be suppressed even if two chairs are stacked.

Further, in the area X, the convex portion 14 of the seat 10 of the upper chair 1A comes into contact with the seat surface 11 of the seat 10 of the lower chair 1. As shown in FIG. 2B, since the bottom surface of the convex portion 14 forms a curved surface, it is possible to prevent the seat surface 11 from being deformed downward even when stacked.

The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, and the like. In addition, the material, shape, size, numerical value, form, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

According to the seat and chair according to the present invention, even when the chairs are stacked, it is possible to secure an excellent sitting comfort without increasing the height.

1 Chair 3 Back 5 Legs 7 Armrest 10 Seat 14 Convex 20 Bottom member 22 First cushion material 24 Second cushion material

Claims (2)

A stackable chair comprising a back, a seat provided in front of the back, and legs provided below the back and the seat .
A bottom member having a convex portion protruding downward and made of hard resin or metal,
A soft cushion part in which at least a part in the height direction is housed in the space defined by the inside of the convex part,
Equipped with a,
The cushion portion includes a first cushion material and a second cushion material stacked in the height direction.
The entire second cushion material is housed in the space.
The first cushion material is arranged above the second cushion material and the bottom member.
The hardness of the second cushion material is larger than the hardness of the first cushion material.
A stackable chair in which the convex portion is configured to recess the cushion portion when the stackable chairs are stacked . The bottom surface of the front Kitotsu portion constitutes a curved surface, stackable chair according to claim 1.

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