JPH0573977B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an electric kotatsu whose legs provided at the corners of the kotatsu body are foldable.

(b) Prior art The kotatsu shown in Japanese Patent Application Laid-open No. 190327/1983 is
Although the height of the kotatsu can be adjusted arbitrarily, the height is adjusted by rotating the four legs and expanding and contracting them up and down, so there is a problem with the workability of storing the legs. In order to solve this problem, the kotatsu shown in Japanese Utility Model Publication No. 58-46357 has four legs that are bendable, which improves the ability to store the legs as well as the workability of the kotatsu. Further, when the legs are in the folded state, a space is formed between the heater and the floor surface, so that the floor surface is prevented from being abnormally heated even if the heater is energized in the folded state.

However, in the kotatsu shown in Japanese Utility Model Publication No. 58-46357, the leg support members that bendably support the legs in the frame and the shafts attached to them are exposed, so these members are not easily affected by external forces. deformation,
There is a problem that there is a risk of damage and that the appearance is impaired.

(c) Problems to be Solved by the Invention It is an object of the present invention to protect a member that bendably supports a leg in a frame and a shaft attached thereto from external forces, and to improve the appearance thereof.

(d) Means for Solving the Problems The present invention provides a kotatsu main body comprising a frame formed into a frame shape by a plurality of beams, a heater unit attached to the approximate center of the frame, and An electric kotatsu consisting of four legs provided at the corners of the kotatsu main body, the legs being connected to a fixed leg fixed to the frame, and a pivot shaft at the bottom of the fixed leg. The folding legs are rotatably provided through the heater unit, and the folding legs are attached to the kotatsu so that a space is formed between the lower surface of the heater unit and the floor by the legs in the folded state. In the electric kotatsu with folding legs configured to be freely foldable below the main body, the fixed legs are hollow with an open bottom, and are fixed to the frame together with the fixed legs through bolts inside the fixed legs. The folding leg has a structure in which a fixing metal fitting and the pivot shaft, which is disposed through the folding leg and whose both ends are supported by the fixing metal fitting, are housed and arranged.

(E) Function As described above, the present invention provides a fixed leg having a hollow shape with an open bottom, and a fixing fitting fixed to the frame together with the fixed leg via a bolt inside the fixed leg; Since the structure is such that the pivot shaft is disposed through the folding leg and is supported at both ends by the fixing bracket, the fixing bracket and the pivot shaft that support the folding leg are covered by the fixing leg, and the pivot shaft is fixed. The legs act as buffers to absorb external forces applied to them. Further, the fixed leg hides the metal fittings and the shaft to improve the appearance.

(F) Example 1 shows a kotatsu main body, and an outer frame 3 assembled into a frame shape via a mounting bracket 2 having a substantially U-shaped cross section...
and an inner frame 4 combined in a square shape within the inner space of the outer frame 3; It is formed of a square heater unit 5 and four legs 6 provided at the corners of the frame.

The heater unit 5 has an outer shell made up of a decorative board 7 and a protective guard 8, and has a flat wind guide plate 9 and a pair of rod-shaped heaters 10, 1 in the inner space thereof.
0, a fan 12 supported by a support plate 11 and rotationally driven by a motor. 13 is heater 1
an adjustment knob for controlling energization to 0 and 10;
14 is a power cord. The heater unit 5 is arranged in a space formed by a plurality of inner legs 4, and the lowermost end of the heater unit 5 is made not to protrude beyond the lower end of the inner legs 4. This heater unit 5 is attached to the screw 1
5 and 15 are fixed from the side of the inner beam 4.

The leg body 6 is formed of a fixed leg A that is fixed to the mounting bracket 2 with a bolt 17, and a folding leg B that is rotatably folded with respect to the fixed leg A. The fixed leg A has a hollow shape with an open lower surface, and has a rubber cushion 18 protruding from the upper surface for mounting and supporting the table plate T, and a spring 19.
A lock release button 20 is provided that can be pressed up and down. Pressing pieces 50, 50 are formed on the lower surface of the lock release button 20. Also, a fixing metal fitting 2 for tightening the bolt 17 is provided inside the fixed leg A.
1 is inserted and arranged. This fixture 21 includes engagement claws 23, 23 that are engaged with the engagement holes 22, 22 of the mounting bracket 2, and a pair of locking pieces 24, 24.
Holes 26, 26 through which the pivot shaft 25 is inserted are formed. Reference numerals 27 and 27 denote cover plates that cover a portion of the lower opening of the fixed leg A.

The folding leg B has a hollow elongated shape as a whole, and a bottom cover 28 is fixed to the opening on the lower surface thereof. An insertion portion 30 is formed in the upper part of the folding leg B. The insertion portion 30 is inserted through the lower opening of the fixed leg A.
The locking pieces 24, 24 are provided on the upper surface of this insertion portion 30.
A slit 31 is formed through which the slit 31 is inserted. Inside the insertion portion 30, a stopper 35 is formed with a mounting piece 33 and a pivot piece 34 from the lower opening of the folding leg B.
A support member 36 and a lock body 38 having a spring 37 attached to the lower part thereof are inserted. The mounting piece 33 of the stopper 35 and the support member 36 are connected by screws 4
They are tightened together inside the insertion portion 30 at a value of 0.40.
The pivot pieces 34, 34 of the stopper 35 are connected to the insertion portion 3.
The holes 43, 43 of the pivot piece 34 and the fixing metal fitting 2 are exposed from the extraction holes 41, 41 formed on both sides of the pivot piece 34.
A pivot shaft 25 is inserted through holes 26, 26 of No. 1 and supported.

Further, the fixing fitting 21 and the pivot shaft 25 are connected to a first
As is clear from Figures 4 and 9, fixed leg A
It is completely covered and is hardly exposed to the outside. That is, the fixed leg A also acts as a buffer material to prevent direct force from being applied to the fixing fitting 21 and the pivot shaft 25.

The lock body 38 forms bent pieces 45, 45 facing the pressing pieces 50, 50, and also forms abutting pieces 46, 46 that engage with and disengage from the locking pieces 24, 24, and A bent piece 48 is formed to prevent the protrusion 47 from coming off.

Further, as shown in FIGS. 2 and 5, the folding leg B of the leg body 6 has a D-shaped cross section with an inner surface having a flat surface _B1 and an outer surface having a curved surface _B2 . That is, as will be described later, when the folding leg B of the leg body 6 is folded as shown in FIGS. 2, 3, and 4, the flat surface
_B1 is in direct surface contact with the lower surface of the inner leg 4, and the pressing force from above applied to the kotatsu main body 1 can be efficiently dispersed to the legs 6 through this flat surface _B1 .

Then, to explain the folding mechanism of the legs 6,
When the legs are extended and used in normal use, as shown in FIGS. The folding leg B is fixed to the fixed leg A by being engaged and locked with the engagement piece 24.

In addition, when the height of the kotatsu body 1 is lowered and used in a crossed-legged position,
When used as shown in Figures 7 and 8,
As shown in the figure, the lock release button 20 is pressed in the direction of the arrow G, and the pressing pieces 50 push down the lock body 38 through the bent pieces 45, 45 against the force of the spring 37, so that it engages with the contact piece 46. When the lock with the stopper piece 24 is released and the folding leg B is then pressed in the direction of the arrow K, the folding leg B rotates via the pivot shaft 25 and is folded onto the lower surface of the kotatsu main body 1. It is.

Then, when folding tightening B is folded,
As shown in FIG. 4, this folding leg B is directly connected to the inner
... so that its flat part comes into contact with the inner beam 4.
This prevents the folding legs B from coming into contact with the heater unit 5, which is recessed inwards, and deforming the protective guard 8 and the like.

Moreover, as shown in FIG. 3, the folding legs B are brought into contact with the mating portions S of the inner legs 4 combined in a square shape, thereby preventing the inner legs 4 from being deformed or broken.

Moreover, when the folding leg B is folded and used as shown in FIG. 4, the distance X is always maintained between the heater unit 5 and the floor surface F, so that the heater unit 5 does not get in the way during use. In addition, even if hot air is generated in this state, it will not directly heat the floor surface F because of the interval Warm air does not get trapped nearby.

Further, since the fixing metal fittings 21 and the pivot shaft 25 are hidden by the fixed legs A, the appearance of the legs 6 can be improved.

(G) Effects of the Invention As described above, the present invention provides a fixed leg having a hollow shape with an open bottom, and a fixing metal fitting fixed to the frame together with the fixed leg via a bolt inside the fixed leg. Since the pivot shaft is disposed through the folding leg and supported at both ends by the fixing bracket, the mounting bracket and the pivot shaft that support the folding leg are covered by the fixing leg. The fixed legs act as a buffer material that absorbs external forces applied thereto, and can protect the fixed fittings and the pivot shaft from deformation and damage caused by external forces.

Furthermore, the fixed legs hide the fixing metal fittings and the pivot shaft, making it possible to improve the appearance of the kotatsu.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the electric kotatsu with foldable legs of the present invention;
Fig. 2 is a perspective view of the same when the legs are folded, Fig. 3 is a partially see-through bottom view of Fig. 2, Fig. 4 is a partially cutaway side view of Fig. 2, and Fig. 5 is a partially cutaway side view of Fig. 2. An exploded perspective view of the legs, FIG. 6 is a sectional view of the main parts of FIG. 1, FIG. 7 is a sectional view of the main parts when the legs are folded, and FIG. 8 is a sectional view of the main parts when the legs are folded. , FIG. 9 is a bottom view of FIG. 8, and FIG. 10 is a sectional view of the main part when the decorative board is used. 3...outer leg, 4...inner leg, 5...heater unit, 6...leg body, A...fixed leg, B...folding leg.

Claims (1)

[Scope of Claims] 1. A kotatsu body consisting of a frame formed into a frame shape by a plurality of beams, a heater unit attached to the approximate center of the frame, and a kotatsu body consisting of a corner part of the kotatsu body. An electric kotatsu consisting of four legs provided, the legs being provided with a fixed leg fixed to the frame and a lower part of the fixed leg rotatably via a pivot shaft. The folding legs are configured to be foldable below the kotatsu body so that the legs in the folded state form a space between the lower surface of the heater unit and the floor surface. In the foldable leg electric kotatsu constructed, the fixed leg has a hollow shape with an open bottom surface, and a fixing metal fitting fixed to the frame together with the fixed leg via a bolt is provided in the fixed leg, and An electric kotatsu with folding legs, characterized in that the pivot shaft is arranged to penetrate through the tatami legs and supported at both ends by the fixing fittings.