JPH0519681Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to an electric kotatsu in which a control board for controlling the temperature of the heater is incorporated in the frame.

(b) Prior Art In a conventional electric kotatsu, a heater unit is attached to a storage section provided at the center of the frame, and a power cord led out from this unit is drawn out around the circumference of the frame.

Since the above-mentioned power cord gets in the way when people are using the electric kotatsu by getting their feet caught on it, the upper part of one end of the outer frame (piece) is cut out and the cord is led out to the cord storage section. Such a specific prior art is disclosed in Japanese Utility Model Publication No. 59-6203. However, the above-mentioned notches weaken the strength of the frame and have the disadvantage that if an adult stands on the frame, the frame may break at the notch.

Recently, electric kotatsus have been proposed that use a microprocessor to accurately control the temperature of the heater. In this case, the control board with the microprocessor attached is housed in the remote control installed outside the kotatsu body, but there are many leads connecting the remote control and the heater, and these lead wires are connected to the kotatsu body. This resulted in the above-mentioned notch extending out from the frame being enlarged, which caused the frame to break.

To explain in more detail, the cut-out part had a similar effect to a cracked part, and when an adult sat on the top of the frame, it broke more easily than the cut-out part. In order to prevent this breakage, it may be possible to increase the thickness of the frame, but in this case, the effective height inside the kotatsu would be reduced, which would have the disadvantage of reducing the range of movement of the legs.

(c) Problems that the invention aims to solve This invention maintains the strength of the crosspiece by inserting the lead wire that connects the control board and the heater through the hole provided in the crosspiece, and also provides a power cord that is led out from the kotatsu body. The purpose of this invention is to lead the power cord to the support leg on the corner side of the frame body where it will be the least obstructive, without forcibly bending the power cord.

(d) Means for solving the problem A frame body in which a plurality of crosspieces are combined vertically and horizontally to form a storage part in the center and a space is formed outside the storage part, and a corner of the frame body. support legs fixed to the
The temperature of a heater unit that has a heater inside and is stored in the storage part and fixed to the crosspiece, and the heater that is placed and fixed in the hollow space with the lower surface of the empty space closed by a lower plate fixed to the crosspiece. A control board that performs control, and an upper plate that covers the upper surface of the cavity and is fixed to a crosspiece, a hole is bored in the crosspiece that partitions the storage part and the cavity, and the control board and the heater are inserted into the hole. A connecting portion for connecting the control board and the power cord is disposed toward the support leg, through which a lead wire is inserted.

(E) Function: A control board for storing and fixing a heater unit in a storage section formed by combining a plurality of crosspieces, and controlling the temperature of the heater in a space provided outside the storage section and formed by the crosspieces. A hole is drilled in the crosspiece that separates the storage section and the empty space, and a lead wire connecting the control board and the heater is inserted into this hole, so that the lead wire is exposed on the bottom surface of the frame and hangs down. In addition, the power cord can be led out from the control board to reduce the number of cords, and the power cord can be easily led to the side of the support leg where it will not interfere with the user without being forcibly bent.

(f) Embodiments Examples of the present invention will be described based on the drawings. 1
combines multiple crosspieces 2a, 2b, 2c, 2d vertically and horizontally, and surrounds the outside with crosspieces 3a, 3b, 3.
It is a frame constituting the kotatsu main body fixed by c and 3d, and support legs 4, 4, 4, 4 are fixed at the corner parts, and a rectangular storage part 5 is formed by the crosspieces at the center side. On the outside there are crosspieces 2a, 2b, 2c.
A rectangular space 6 is formed by the enclosure bar 3a. Therefore, the crosspiece 2c has a structure in which a storage section 5 and a space 6 are divided, and an oblong hole 7 is bored in the crosspiece. Furthermore, the crosspiece 2 perpendicular to the hole
Screw insertion holes 8, 8, 8 for fixing the heater unit 9 are bored in each of the holes a and 2b.

Reference numeral 9 denotes a rectangular heater unit, which includes a mounting plate 10, a reflection plate 11 fixed to the upper surface of the mounting plate, and a plurality of straight pipe heaters 12, 12 fixed in parallel to the lower surface of the mounting plate 10. It consists of a protective guard 13 that covers the lower surface of the heater and is fixed to a mounting plate, and a support frame 14 that is fixed to the side surface of the guard and the mounting plate. Insertion holes 15 and 16 are provided on the sides of the protective guard 13 and the support frame 14 where the end portions of the heaters 12 and 12 are located, respectively, through which they communicate, and a screw hole is provided on the side surface of the support frame perpendicular to the side surface where the holes are provided. 17, 17, 17 are provided. Reference numeral 18 indicates lead wires connected to the heaters 12, 12, which are led out from the insertion holes 15, 16.

A lower plate 19 closes the lower surface of the space 6, and is fixed to the lower surfaces of the crosspieces 2a, 2b and the enclosure crosspiece 3a with screws. Reference numeral 20 denotes an upper plate that closes the upper surface of the space 6, and is fixed to the upper surfaces of the crosspieces 2a and 2b with screws.

Reference numeral 21 denotes a control board for controlling the temperature of the heaters 12, 12 fixedly placed in the space 6, to which a microprocessor 22, a power control element 23, a heat sink 24 of the element, and connectors 25, 26 are attached. There is. Reference numeral 27 denotes an insertion hole bored in the crosspiece 2b forming the cavity 6, and is formed at a position close to the support leg 4 side. A connection terminal 28 is fixed to the upper surface of the lower plate 19 facing the insertion hole 27, and is connected to the connector 26 by a lead wire 29. The reason why the connecting terminal 28 is fixed to the lower plate 19 is to prevent stress from being applied to the control board 21 due to the attachment and detachment of the plug to the connecting terminal 28. Reference numeral 30 denotes a plug that can be attached to and detached from the connection terminal 28 through the insertion hole 27, and is connected to the power cord 3 of the control board 21 and the remote control 31.
2 and constitutes a connecting portion disposed toward the support leg 4.

Next, we will discuss the assembly order. First, the control board 21 and the connection terminals 28 are fixed to the upper surface of the lower plate 19 with the screws 33, 33, and the heater unit 9 is stored in the storage part 5 with the lead wire 18 of the heater unit 9 inserted through the hole 7. Fixing screws 34, 3
4 and 34 are screwed and fixed into the screw holes 17, 17, 17 through the screw insertion holes 8, 8, 8.

Then, the ends of the lead wires 7 are connected to the connectors 25, and the upper plate 20 is fixed to the crosspieces 2a and 2b to cover the upper surface of the empty space 6.

When in use, the plug 30 is connected to the connection terminal 28 and commercial AC power is supplied from the power cord 32 via the remote control 31. heater 12,
Temperature control 12 is performed by the microprocessor 22 so that the temperature is set by a temperature control knob (not shown) provided on the remote control 31.

(g) Effects of the invention As described above, in this invention, the lead wires connecting the control board and the heater are inserted into the holes drilled in the crosspiece that separates the storage area and the empty space, so the part where the lead wires are inserted is different from the conventional one. Compared to the case where notches are provided, joints are formed on the top, bottom, left and right sides of the hole, which increases the strength of the crosspiece, and the lead wire is supported by the hole, allowing it to hang below the frame. If you expose yourself or make it look bad, you will lose your reputation. In addition, since the power cord is led out from the connection part placed toward the support leg, it can be led to the corner of the frame without being forced to bend, so it can be guided to the corner of the frame without being forced to bend. There is no possibility of wire breakage.
Furthermore, since the storage area and the empty space are formed close to each other using crosspieces, the space formed by the combination of crosspieces can be used effectively, and the upper and lower parts of the space where the control board is placed are covered by the upper and lower plates. No cotton dust, etc. can get in. Furthermore, since the control board is provided within the space, the number of cords (the number of power cords) led out from the space to the outside of the frame is reduced, making it easier to handle the cords.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the electric kotatsu of the present invention, FIG. 2 is an exploded perspective view of the main part, and FIG. 3 is a sectional view of the main part. 1... Frame body, 2a, 2b, 2c, 2d... Crosspiece,
3a, 3b, 3c, 3d... Enclosing frame, 5... Storage section, 6... Blank space, 7... Hole, 9... Heater unit, 12, 12... Heater, 18... Lead wire, 19... ...Lower board, 20...Upper board, 21...Control board, 32...Power cord.

Claims (1)

[Scope of utility model registration request] A frame body in which a plurality of crosspieces are combined vertically and horizontally to form a storage part in the center thereof and a space is formed outside the storage part, and support legs fixed to corner parts of the frame body;
The temperature of a heater unit that has a heater inside and is stored in the storage part and fixed to the crosspiece, and the heater that is placed and fixed in the hollow space with the lower surface of the empty space closed by a lower plate fixed to the crosspiece. A control board that performs control, and an upper plate that covers the upper surface of the cavity and is fixed to a crosspiece, a hole is bored in the crosspiece that partitions the storage part and the cavity, and the control board and the heater are inserted into the hole. An electric kotatsu, characterized in that a connecting portion through which a lead wire connecting the control board and the power cord is inserted is disposed toward the support leg.