JPH0248722Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an improvement of a kotatsu that is equipped with a table whose back center is supported by a single leg-shaped support.

[Conventional technology]

Traditional Horikotatsu consists of a tower supported by pillars at the four corners on a hearth box set on the floor, which has the disadvantage that the four corners of the tower get in the way and cannot be used effectively. . For this reason, there is already a known kotatsu in which a single support is erected from the center of the hearth box, and by supporting the center of the back of the table board on this support, the area around the table board can be used without waste. (Jikko Sho 35-19572)
issue). However, this kotatsu using a single-legged support has the problem that the support can be expanded and contracted by the rotation of a screw, which causes the table to rotate, making it inconvenient to use. In addition, since the table is rotatable, when the tatami mats are inserted into the hearth box after the use as a kotatsu is stopped in the summer, the tatami mats must be supported by the rotating table, so the surface of the tatami mats needs to be supported by the rotating table. There was a problem in that it was difficult to precisely match the surface of the surrounding tatami mats, making it impractical.

Therefore, in order to solve the problems of the conventional type of kotatsu, the present inventor formed the support by connecting relay legs, and provided an auxiliary frame (frame) that can slide up and down on the opening edge of the hearth box. When used as a kotatsu, the tatami rim around the opening of the hearth box was reinforced, and when not used as a kotatsu in the summer, the auxiliary frame was sunk inside the hearth box and separated from the support by this auxiliary frame. He proposed the idea of a single-legged table-shaped kotatsu, in which the table was embedded as an insole plate, and the tatami mats could be fitted onto the table so that they were at the same height as the surrounding tatami surface (Jikkosho 58-29414
issue).

By the way, in this improved type of kotatsu, the auxiliary frame is fixed to the opening edge of the furnace box with bolts, so when the auxiliary frame is not used as a kotatsu in the summer, each bolt must be removed to remove the auxiliary frame from the furnace box. It has been found that since it cannot be dropped into the box, the advantages of providing an auxiliary frame cannot be fully utilized due to the troublesome operation of attaching and removing bolts.

[Problem that the invention attempts to solve]

The present invention aims to further improve the advantages of the conventional single-legged table-shaped hokotatsu mentioned above and make it easier to use.The present invention aims to improve the advantages of the conventional single-legged table-shaped hokotatsu and to make it easier to use. With simple operations, it is possible to easily fix the arrangement in the upper position when using it as a horigotatsu, and to drop it into the lower position when not using it as a horigotatsu.Furthermore, the auxiliary frame can be easily handled. By attaching a cover plate to this auxiliary frame that is different from the table supported by the pillars, it can be used as a dining table, a low table, etc. when it is not used as a kotatsu.

[Means for solving problems]

In the present invention, as a means for achieving the above object, a locking protrusion is provided on the inner surface of the opening side wall of the furnace box, and a groove is provided around the auxiliary frame along the frame height direction, so that the auxiliary frame can be positioned at a predetermined position on the opening edge of the furnace box. In the mating position of the orientation, the groove does not match the locking protrusion, the lower edge of the frame is supported on the locking protrusion, and the top surface of the frame is placed at the same height as the tatami surface or floor surface, and this auxiliary frame is rotated. By setting the mating position in a different direction, the groove engages with the locking protrusion so that the top surface of the frame can be dropped into the hearth box by the thickness of the tatami mat, and the inside opening edge of this auxiliary frame is It is characterized by providing a cover plate that is fitted through a table support that is erected therein.

〔Example〕

Next, an embodiment of the present invention shown in the drawings will be described. An electric heater 3 is disposed at the bottom of a furnace box 2 opened on a floor 1, and a single leg shape is inserted through a drainboard cover 4 covering the top surface of the heater 3. A table support 5 is provided protrudingly. This support 5 has a fixed base end 5a.
and a relay column 5b that is removably attached to this with screws or the like, and a table 6 is removably attached to this relay column 5b with screws. In addition, when the furnace box 2 is made into a rectangle as described later, it is preferable that the number of table supports 5 is two.

An auxiliary frame 7 is fitted into the opening edge 21 of the furnace box 2 so that its lower edge 19 is supported by locking protrusions 11 protruding from the inner surface of each side wall of the furnace box 2. This auxiliary frame 7 has an upper surface 8 parallel to the surrounding tatami surface 10, and a side frame 9 with an outer diameter that is in close contact with the inner surface of the side wall of the furnace box 2.
The side frame 9 is provided with grooves 12 that engage with the locking projections 11, respectively.

For example, when the furnace box 2 is square as shown in FIG. 2, the locking projections 11 projecting from the side walls of the furnace box 2 are locking projections 11a projecting from the side walls 2a and 2b adjacent to each other. and 11b have unequal protruding positions with respect to the frame corner C, and the side walls 2 face each other.
The protruding positions of a and 2c and 2b and 2d are symmetrical. In addition, as shown in Fig. 3, the locking protrusion 1 when the furnace box 2 is rectangular
The protruding position of 1 is on one opposing side wall, for example 2
The protruding positions on b and 2d may be symmetrical, but the protruding positions on one of the opposing side walls, for example 2a and 2c, are asymmetrical.

The grooves 12 provided in each side frame 9 of the auxiliary frame 7 corresponding to the above-mentioned furnace box 2 are placed at positions corresponding to the protruding positions of the furnace box 2 as shown in FIG. It is provided in the direction along H. When the auxiliary frame 7 is pulled up to the opening edge 21 of the furnace box as shown in Fig. 1, the auxiliary frame 7 must be immediately pulled upwards outside the furnace box.
If the frame is rotated 90 degrees and then dropped into the furnace box, the groove 12 and the locking protrusion 11 will be in different positions and the lower edge 19 of the frame will be supported on the protrusion 11, as shown in FIG. Further, if the furnace box 2 and the auxiliary frame 7 are rectangular as shown in FIG. 3, the auxiliary frame 7 may be rotated 180 degrees in the same manner as described above.

The depth setting position of the hearth box opening edge 21 with respect to the surrounding tatami surface 10 is such that when the auxiliary frame 7 is dropped into the hearth box 2 as shown in FIG. 1 and FIG. It is provided in a portion where a recess H into which a mating tatami 13 having the same thickness as the tatami facing 10 can be dropped is formed.

The opening edge 14 provided on the upper surface 8 of the auxiliary frame 7 is provided with several pull-out support pieces 15 on the inside of the periphery. It is pushed towards the back so that it does not interfere with its use as a kotatsu. Further, as shown in FIGS. 6 and 7, when not used as a kotatsu such as in summer, each of these support pieces 15 is pulled out to the front and passes through the table support 5 through the through hole 17 on the opening edge 14. The lid plate 16 in the closed state can be fitted and closed. Reference numeral 18 indicates a drop handle provided on the cover plate 16.

[Effect]

When used as a kotatsu in winter, the auxiliary frame 7 is raised so that its lower edge 19 is supported by the locking protrusion 11 of the hearth box 2, as shown in FIG. Use it so that it is the same height as 10. Needless to say, when the table 6 is used without a futon, it can be used as a lower table throughout the year. Also, in the summer, if you want to make it the same height as the tatami instead of having a floor-drop shape,
If the cover plate 16 is placed on the opening edge 14 of the auxiliary frame 7,
Table 6 can be used as a regular low table.

When the furnace box 2 and the auxiliary frame 7 are made rectangular as shown in Fig. 3, the number of table supports 5 is two as shown in Fig. 8, and this support 5 is connected to another relay post 5c. By increasing the length and covering the auxiliary frame opening 14 with a cover plate 16, it can be used as a chair-shaped Western table.

Of course, when the opening edge 14 of the auxiliary frame 7 is covered with the lid 16 as described above, it goes without saying that the furnace box 2 can be used as a storage space.

Furthermore, in the summer, if you do not want to use the table 6 as a low table and want to use the top of the hearth box 2 as a parlor with the surrounding tatami mats 10, remove the table support 5 from the fixed base end 5a and set it as shown in FIG. Drop the auxiliary frame 7 into the furnace box 2, fit it onto the top surface 8 of the frame, and attach the tatami mat 13.
All you have to do is mate the .

As described above, according to this invention, the auxiliary frame 7 can be supported by the locking protrusion 11 of the hearth 2, and can be lowered to a predetermined depth by rotation, so that the auxiliary frame can be used effectively. Since it can be used for a variety of purposes such as a kotatsu, low table, Western table, and storage, it has the effect of greatly increasing the practicality of this type of appliance.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the configuration of the Horikotatsu according to the present invention, FIG. 2 is a cross-sectional view taken along the - line in FIG. 1,
FIG. 3 is a sectional view of the same part as FIG. 2 in another embodiment, FIG. 4 is a sectional view at - line in FIG. 1, and FIG. 5 is a sectional view taken along the - line in FIG.
FIGS. 6 to 8 are sectional views showing examples of usage conditions. In the figure, 1...floor surface, 2...furnace box, 3...heater, 4...
...cover, 5...post, 6...table, 7...
Auxiliary frame, 8... Frame top surface, 9... Side frame, 10... Tatami surface, 11... Locking protrusion, 12... Groove, 13... Fitting, 14... Auxiliary frame opening edge, 15... support piece,
16...Lid plate, 17...Through hole.

Claims (1)

[Scope of utility model registration request] In a single-legged table-shaped hokotatsu, in which a table is supported above the hearth box by longitudinally removable struts that protrude from the bottom of the hearth box, which are located under the floor, At the mating position in a predetermined orientation, the lower edge of the frame is supported by a locking protrusion protruding from the inner surface of the side wall of the furnace box, and the upper surface of the frame is placed at the same height as the tatami surface or floor surface, and at another mating position by rotation. an auxiliary frame provided such that a groove provided at the lower edge of the frame engages with the locking protrusion so that the upper surface of the frame is dropped into the hearth box by the thickness of the tatami; and an inner opening of the auxiliary frame. A table-shaped kotatsu comprising a lid plate that can be fitted with a table support inserted through a through-hole in the edge.