Kotatsu chair
The kotatsu chair incorporates a foldable occlusion body to address the issue of warm air escape and aesthetic concerns, enabling suitable use both with and without the kotatsu heater.
Patent Information
- Application Number
- JP2021066565
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-04-09
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2041-04-09
AI Technical Summary
Existing kotatsu chairs are not suitable for use both with and without the kotatsu heater, as they either allow warm air to escape when the kotatsu is in use or give a hot impression when not in use.
A kotatsu chair design featuring a seat with an occlusion body that hangs from one end and blocks the gap between the legs, which can be folded into the back of the seat when not in use to prevent warm air escape and maintain a neat appearance.
The chair effectively retains warm air when the kotatsu is in use while avoiding a hot impression when used as a regular table, making it suitable for year-round use without the need for seasonal chair changes.
Smart Images

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Abstract
Description
[Technical field]
[0001] The present invention relates to a kotatsu chair. [Background technology]
[0002] In dining kotatsu, which is equipped with a heater unit for kotatsu on a dining table, a special chair is usually used to prevent warm air from escaping from under the chair to the outside. As such kotatsu chairs, those described in Patent Documents 1 to 3 are known as prior art. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] JP 2006-61210 A [Patent Document 2] JP 2009-118905 A [Patent Document 3] Registered Utility Model No. 3160979 Summary of the Invention [Problem to be solved by the invention]
[0004] Chairs used with normal tables are not suitable for use with dining kotatsu because warm air escapes from under the seat. Therefore, when using a dining kotatsu, it is preferable to use chairs that have a structure that prevents warm air from escaping from under the seat, as described in Patent Documents 1 to 3.
[0005] However, in the summer when the kotatsu is not in use, there is no need for a structure to prevent the escape of warm air from under the seat, and it is not preferable because it gives an oppressive impression. On the other hand, replacing chairs every season is costly and requires storage space for chairs that are not in use. Therefore, there is a demand for a dining kotatsu chair that can be used both when the kotatsu is in use and when it is not in use.
[0006] One aspect of the present invention has been made to solve the above-mentioned problems, and its object is to realize a dining kotatsu chair that can be used appropriately both when the kotatsu is in use and when it is not. [Means for solving the problem]
[0007] In order to solve the above problems, one embodiment of the present invention provides a kotatsu chair having a seat and legs supporting the seat, wherein the seat has a seat surface and a blocking body that hangs down from one end of the seat surface toward the surface on which the kotatsu chair is placed and blocks at least a portion of the space between the legs, the seat surface has a shape that narrows in width from one end on the blocking body side toward the opposing other end, the blocking body is capable of being folded into the back side of the seat surface, and the surface of the blocking body that blocks the space between the legs has a shape that narrows in width from one end on the seat surface side toward the opposing other end. Effect of the Invention
[0008] A kotatsu chair according to one aspect of the present invention can be suitably used both when the kotatsu is in use and when it is not in use. [Brief description of the drawings]
[0009] [Figure 1] 1 is a front view of a kotatsu chair according to one embodiment of the present invention; [Diagram 2] FIG. 2 is a rear view of the kotatsu chair according to one embodiment of the present invention. [Diagram 3] 1 is a side view of a kotatsu chair according to one embodiment of the present invention. [Figure 4] 1 is a top view of a kotatsu chair according to one embodiment of the present invention. FIG. [Diagram 5] FIG. 2 is a bottom view of the kotatsu chair according to one embodiment of the present invention. [Figure 6] FIG. 2 is a front view showing a state in which the closing body is folded in the kotatsu chair according to one embodiment of the present invention. [Figure 7] FIG. 2 is a bottom view showing a state in which a part of the closing body is folded in the kotatsu chair according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0010] Hereinafter, an embodiment of the present invention will be described with reference to Figs. 1 to 7. Fig. 1 is a front view of a kotatsu chair according to an embodiment of the present invention. Fig. 2 is a rear view of a kotatsu chair according to an embodiment of the present invention. Fig. 3 is a side view of a kotatsu chair according to an embodiment of the present invention. Fig. 4 is a top view of a kotatsu chair according to an embodiment of the present invention. Fig. 5 is a bottom view of a kotatsu chair according to an embodiment of the present invention. Fig. 6 is a front view of a kotatsu chair according to an embodiment of the present invention, showing a state in which a cover is folded. Fig. 7 is a bottom view of a kotatsu chair according to an embodiment of the present invention, showing a state in which a part of the cover is folded. Fig. 3 is a left side view of the kotatsu chair. The right side view of the kotatsu chair is omitted because it is symmetrical to the left side view.
[0011] As shown in Figs. 1 to 7, the kotatsu chair 100 comprises a seat 10 and legs 102 supporting the seat 10. The kotatsu chair 100 also comprises a backrest 101. The kotatsu chair 100 is a chair used together with a dining kotatsu, which is a dining table equipped with a heater unit for the kotatsu. The seat 10 is composed of a seat surface 1 on which a user sits and a blocking body 2. In the seat 10, the seat surface 1 and the blocking body 2 may be configured as an integral body or may be configured as separate bodies.
[0012] The seat surface 1 is, for example, a cushion material covered with a cover. Examples of the cushion material include urethane and cotton. The cushion material cover is a bag-shaped fabric, and the cushion material may be removable. The cushion material cover may be configured as one body with the blocking body 2, or may be configured as a separate body.
[0013] The seat 1 has a shape in which the width narrows from one end on the blocking body 2 side to the other opposite end. In other words, the width of the seat 1 is narrower at the other opposite end on the backrest side than at the one end on the blocking body 2 side. As shown in Fig. 3, when the kotatsu chair 100 is viewed from above, the seat 1 may be trapezoidal.
[0014] The blocking body 2 hangs down from one end of the seat 1 towards the surface on which the kotatsu chair 100 is placed, and blocks at least a part of the space between the legs 102. As shown in Fig. 1, the blocking body 2 is provided so as to block the space between the legs 102 on the front side of the kotatsu chair (opposite the backrest 101 side). As an example, the blocking body 2 may hang down vertically from the seat 1, or may hang down curved along the legs 102 as long as the legs 102 are curved so as to protrude forward beyond the seat 1.
[0015] In this manner, by the blocking body 2 blocking at least a portion of the space between the legs 102 of the kotatsu chair 100, the escape of warm air from the gap between the legs 102 below the seat 10 is prevented.
[0016] The blocking body 2 may be provided on the seat surface 1 other than the end portion located on the backrest 101 side, that is, on the front side and both side sides of the kotatsu chair 100. This makes it possible to more efficiently prevent warm air from escaping from under the chair.
[0017] The blocking body 2 may have a length that blocks at least a portion of the space from the seat 1 to the floor on which the kotatsu chair 100 is placed, and a width that blocks at least a portion of the space between adjacent legs 102. From the viewpoint of more efficiently preventing the escape of warm air, it is preferable that the blocking body 2 has a length that blocks the entire space from the seat 1 to the floor, and a width that blocks the entire space between adjacent legs 102. In other words, it is preferable that the length of the blocking body 2 is the same as the length from the back surface of the seat 1 to the floor surface, and the width of the blocking body 2 is the same as the distance between adjacent legs 102.
[0018] The blocking body 2 can be folded under the seat 1. When the dining kotatsu is used as a normal table without using the heater, such as in summer, if the blocking body blocks the space between the legs, it may give a hot and stuffy impression. As shown in FIG. 6, the blocking body 2 can be folded toward the back of the seat 1 at the boundary with the seat 1, so that the blocking body 2 can be folded under the seat 1 for use. As a result, even when the dining kotatsu is used as a normal table without using the heater, such as in summer, the kotatsu chair 100 can be used without giving a hot and stuffy impression. In other words, the kotatsu chair 100 can be used suitably both when the dining kotatsu is used as a kotatsu and when it is not used.
[0019] In addition, the surface of the blocking body 2 102 that blocks the space between the legs is shaped so that its width narrows from one end on the seat 1 side to the opposite end. In other words, the width of the blocking body 2 is narrower at the other end on the floor side that faces the seat 1 than at the one end on the seat 1 side. As shown in Fig. 1, when the kotatsu chair 100 is viewed from the front, the blocking body 2 may be trapezoidal.
[0020] As described above, the seat 1 has a shape that narrows from one end on the blocking body 2 side toward the other opposite end, so that the shape matches that of the blocking body 2. Therefore, as shown in FIG. 7, when the blocking body 2 is folded behind the seat 1, the back side of the seat 1 and the blocking body 2 overlap favorably, and a neat appearance can be achieved. In addition, since the seat 1 and the blocking body 2 have the above-mentioned shapes, the blocking body 2 folded behind the seat 1 is unlikely to protrude from the seat 1 when the kotatsu chair 100 is viewed from above. In this way, the kotatsu chair 100 can be used favorably without spoiling the aesthetic appearance even when the dining kotatsu is not being used as a kotatsu.
[0021] In addition, it is preferable that the surface of the blocking body 2 facing the back side of the seat 1 when the blocking body 2 is folded behind the seat 1 is smaller than the surface on the back side of the seat 1. This more reliably prevents the blocking body 2 folded behind the seat 1 from protruding from the seat 1. In this way, even when the dining kotatsu is not being used as a kotatsu, the kotatsu chair 100 can be used without compromising its aesthetic appearance.
[0022] The blocking body 2 is preferably a fabric with low air permeability that can prevent the escape of warm air, but may be a synthetic resin sheet. The blocking body 2 preferably does not have a core material so that it can be easily folded into the back side of the seat surface 1.
[0023] In addition, the kotatsu chair 100 may further have a blocking body side connecting portion 2a that is provided on the surface of the blocking body 2 that faces the back side of the seat 1 when the blocking body 2 is folded behind the seat 1, and is connected to the back surface of the seat 1.
[0024] 7, the blocking body 2 is provided with a blocking body side connecting portion 2a on the surface that faces the back side of the seat surface 1 when the blocking body 2 is folded behind the seat surface 1. This allows the blocking body 2 to be connected to the back side of the seat surface 1 when the blocking body 2 is folded behind the seat surface 1, thereby preventing the blocking body 2 from sagging.
[0025] The back side of the seat 1 may be made of a material to which the blocking body side connecting part 2a can be connected, or may be provided with a seat side connecting part (not shown) that can be connected to the blocking body side connecting part 2a. The blocking body side connecting part 2a may be provided at an end of the blocking body 2, and as an example, may be provided at the other end side opposite to one end of the seat 1. The blocking body side connecting part 2a may be provided continuously in the left-right direction of the kotatsu chair 100, i.e., in the width direction of the kotatsu chair 100.
[0026] The closure side connecting part 2a may be, for example, a hook-and-loop fastener, a button, or the like. For example, when the closure side connecting part 2a is a hook-and-loop fastener, a hook-and-loop fastener connectable to the closure side connecting part 2a may be provided on the back side of the seat surface 1, but the back side of the seat surface 1 may be made of a material to which the hook-and-loop fastener can be connected. This eliminates the need to provide a hook-and-loop fastener on the back side. For example, when the back side is made of a material to which the hook-and-loop fastener hook (male fastener) can be hooked, there is no need to provide a female fastener on the back side.
[0027] The seat 1 and the blocking body 2 may be detachably connected. In this way, in the summer when the heater of the dining kotatsu is not used, the blocking body 2 can be removed from the seat 1 and the seat 1 can be used alone. Even if the blocking body 2 becomes dirty, since the blocking body 2 is removable, only the blocking body 2 can be replaced or washed, which prevents the kotatsu chair 100 from becoming dirty.
[0028] A weight (not shown) may be provided at the lower end of the closure 2. By providing a weight at the lower end of the closure 2, the closure is maintained in a state of hanging down from the seat 10, and the closure 2 can be prevented from unnecessarily turning up. As the weight, it is preferable to use a long weight in the form of a cord or chain so that it is continuously arranged in the width direction of the lower end of the closure 2. The weight may be in the form of a sheet so as not to get in the way when the closure 2 is folded behind the seat 1 for use.
[0029] The kotatsu chair 100 has a seat 10 having a seat surface 1 and a blocking body 2, and the blocking body 2 hangs down from one end of the seat surface 1 toward the surface on which the kotatsu chair 100 is placed, thereby preventing the escape of warm air from inside the kotatsu. In addition, in the kotatsu chair 100, the blocking body 2 can be folded behind the seat surface 1, so that even when the dining kotatsu is used as a normal table without using the heater in the summer, the chair can be used without feeling oppressive. In other words, the kotatsu chair 100 can be used suitably both when the dining kotatsu is used as a kotatsu and when it is not.
[0030] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in the respective embodiments are also included in the technical scope of the present invention. [Explanation of symbols]
[0031] 1 seat, 2 closure body, 2a closure body side connection part, 10 seat part, 100 kotatsu chair, 102 leg part
Claims
1. A kotatsu chair having a seat and legs supporting the seat, The seat portion has a seat surface and a blocking body that hangs down from one end of the seat surface toward the surface on which the kotatsu chair is placed and blocks at least a portion of the space between the legs, The seat has a shape in which the width narrows from one end on the closure body side to the other end opposite thereto, The closure can be folded into the back side of the seat, The surface of the blocking body that blocks the space between the legs has a shape that narrows in width from one end on the seat side toward the other end opposite thereto, The seat surface is made of a cushion material covered with a cover, The cover and the closure are integrally formed and are made of fabric. A kotatsu chair characterized by the above.
2. The kotatsu chair according to claim 1, characterized in that, in the closing body, a surface facing the underside of the seat when the closing body is folded behind the seat is smaller than a surface of the underside of the seat.
3. A kotatsu chair as described in claim 1 or 2, characterized in that it further has a cover side connection portion provided on the surface of the cover that faces the back side of the seat when the cover is folded behind the seat, and connected to the back side of the seat.
Citation Information
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