JPS63118542A - Electric carpet - Google Patents

Abstract

PURPOSE:To improve the convenience in usage by disposing a controller which controls the electric supply to a heat generation object to control the comfort heating temperature to a desired level nearly at the center of the carpet unit so that a user can operate the controller without shifting his body. CONSTITUTION:A carpet unit 10 is formed in such a manner that a heat generating object 6 that generates heat by being electrically energized and a heat sensing unit 9 that detects the comfort heating temperature of the heat generating object 6 are positioned to wind all around between the top fabric 7 and back fabric 8. A controller 12 that, by detecting the comfort heating temperature of the heat generating unit 6 by the heat sensing unit 9, controls the electric supply to the heat generating unit 6 to control the comfort heating temperature to a desired level. The controller 12 is connected to a connector 15 disposed at a corner 14 of the carpet unit 10 with a power source lead wire 13, and one end of a power cord 17 has a connector 16 that is detachably connected to the connector 15 and the other end of it has a plug 18 that is connected to the power source. In this manner, even if a user is situated at any position on the carpet unit 10, he can operate the controller 12 without almost shifting his body.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric carpet in which a heating element that generates heat when energized is disposed in the carpet body.

BACKGROUND ART A conventional electric carpet of this type is shown in FIG.
A heating element that generates heat when energized is arranged in a meandering manner so as to be located over the entire surface between the outer fabric 1 and the lining fabric, and a heat sensitive element that senses the heating temperature by the heating element is arranged between the outer fabric 1 and the lining fabric. The carpet main body 2 is formed by arranging the carpet in a meandering manner so as to be located on the entire surface between the carpet main bodies 2, and the heating temperature by the heating element is detected by a heat sensitive element at one corner 3 of the carpet main body 2. It is constructed by providing a controller 4 that controls the supply of electricity to the body to maintain a predetermined heating temperature.

Problems to be Solved by the Invention In the electric carpet constructed as described above, the controller 4 is provided at one corner 8 of the carpet body 2, so the controller 4 is located near the location where the controller 4 is provided. The controller 4 can be easily operated when the controller 4 is used at a position where the controller 4 is located. The user must move his/her body to a certain position where the controller 4 is installed each time, which is extremely inconvenient.

The present invention eliminates the above-mentioned drawbacks, and its purpose is to make it possible to operate the controller from anywhere on the carpet body without moving your body, making it extremely easy to use. Our goal is to provide the best electric carpet.

Means for Solving the Problems The present invention provides a heating element 6 that generates heat when energized to a carpet main body I.
In the electric carpet arranged in O, the heating element 6
A controller 12 for controlling the heating temperature to a predetermined temperature by controlling the supply of electricity to the carpet body 10 is disposed approximately in the central portion 11 of the carpet body 10.

Function The controller 12 disposed approximately at the center 11 of the carpet body 10 is controlled to control the electricity supply to the heating element 6 to control the heating temperature to a predetermined temperature. This allows the user to operate the controller 12 without moving his or her body, even if the user is in the same position.

EXAMPLE Hereinafter, an example of the electric carpet of the present invention will be described with reference to FIGS. 1 to 4.

As shown in FIGS. 1 to 3, the electric carpet of the present invention has a heating element 6 that generates heat when energized is arranged in a meandering manner so as to be located over the entire surface between a front cloth 7 and a back cloth 8. A carpet main body 10 is formed by arranging a heat sensitive element 9 equipped with a negative characteristic thermistor that senses the heating temperature by the heating element 6 in a meandering manner over the entire surface between the outer fabric 7 and the lining fabric 8, A controller is provided in the central portion 11 of the carpet body 10 for controlling the heating temperature (heating temperature) by the heating element 6 to a predetermined heating temperature by sensing the heating temperature (heating temperature) by the heating element 6 using a heat sensitive element 9 to control the energization of the heating element 6. 12, and a power connection line 13 for connecting a power source to the heating element 6 via the controller 12 is disposed between the outer fabric 7 and the back fabric 8, and the power connection line 13 The other end of a power cord 17 that connects the controller 12 and a connector 15 provided at one corner 14 of the carpet body 10 and has a connector 16 at one end that is detachably connected to the connector 15. Power plug 18 to connect to the power supply
It is configured by providing.

In the above configuration, the heat generating element 6 and the heat sensitive body 9 are each constructed linearly, and the heat sensitive body 9 is disposed sparsely with respect to the heat generating body 6. In this case, the heat generating body 6 is One side of the heat sensitive body 9 meanderes once while the other side meanders twice, and is sparsely arranged. The controller 12 also includes an upper case I9 and a lower case 20 to form an outer case 2I, as shown in FIGS. A bottom portion 22 located on the four parts 8b of the lining fabric 8 so as not to protrude from the bottom surface 8a, and a side wall 24 erected from the bottom portion 22 to form a storage portion 23 are provided. A terminal 25 for connecting the section 6a is supported by a support piece 26, and a terminal 27 for connecting the end 13a of the power supply connection line 13 to the other side wall 24 is supported by a support piece 28. The end 6a of the heating element 6 is connected to the terminal 25 supported by the piece 26, and the end 13a of the power supply connection line 13 is connected to the terminal 27 supported by the support piece 28, and further, although not shown, the side wall 24 A terminal for connecting the end of the heat sensitive body 9 is supported by a supporting piece, and the end of the heat sensitive body 9 is connected to the terminal 25 supported by the supporting piece 26, and the upper case 19 is connected to the lower case. 2
0, and a control circuit component to be described later is disposed on the back surface of the upper case 19.
An outlet 30 is provided on the surface of the carpet body 10 to connect the power cord of a tower kotatsu that is placed on the carpet body 10 and used together with the carpet body 10, and the heating element 6 of the carpet body IO and the outlet 30 are provided near the outlet 30.
A power switch heir 31 is provided to control the power supply to the carpet body 10, and a temperature adjustment heir 32 is provided to adjust the heating temperature of the carpet body 10 by sliding it left and right as shown in FIG. 3. The heating temperature of the tower kotatsu is adjusted by sliding the heating temperature of the tower kotatsu from side to side as shown in FIG. 20
When attached to the upper case 19, each control component of the upper case 19 and each terminal of the lower case 20 are electrically connected,
If the upper case 19 is removed from the lower case 20 when the carpet main body 10 is used as a simple carpet (a rug that does not heat), a protective protector (not shown) is attached to the upper case 19 and the lower case 20. to prevent dust from entering.

Next, the circuit configuration of the electric carpet constructed as described above will be explained with reference to FIG.

The electric carpet of the present invention includes a power source 35, a power switch 36 operated by a power switch heir 31, a heating element 6 disposed on the carpet body 10, and a power source 36 operated by a power switch 31. Relay coil 3 of relay 37
A series circuit of the relay contact 37b controlled by the relay 7a is connected, and a series circuit of the relay coil 37a of the relay 37 and the thyristor 38 is connected in parallel to the series circuit of the heating element 6 and the relay contact 37b of the relay 37. In parallel to the series circuit of the relay coil 37a of the relay 37 and the thyristor 38, there is an indirect heat resistance 39 whose resistance value can be varied by the operation of the eldest child 33.
．． A bimetal switch 40° that opens when heated by the indirect heating resistor 39 and reaches a predetermined temperature is connected to the series circuit of the outlet 30 to which the power supply hood of the kotatsu is connected, and the connection point between the power switch 36 and the heating element 6 is connected. A heat sensitive element 9 between the cathode of the thyristor 38 and the heating element 6 that senses the heating temperature. Resistance 41. A series circuit of a variable resistor 42 whose resistance value can be varied by the operation of the eldest child 32 is connected,
The input terminal a of the control circuit 43 is connected to the connection point between the resistor 41 and the variable resistor 42, and the power supply terminal a of the control circuit 43 is connected to the connection point between the power switch 36 and the heating element 6. The output terminal C of the circuit 43 is connected to the thyristor 3.
8, and the ground terminal d of the control circuit 43.
is connected to the cathode K of the thyristor 38.

In the above configuration, the heat sensitive body 9 is constructed by inserting a heat sensitive 99 ctt such as a plastic thermistor having negative temperature characteristics between the sensing wire 9a and the sensing wire 9b, and the relay contact 37b of the relay 37 is inserted between the sensing wire 9a and the sensing wire 9b. is a normally open type relay that closes when the relay coil 37a is energized, and the bimetal switch 40 can change the opening temperature by changing the resistance value of the indirect heat resistor 39, and can also be controlled. In circuit 43, when the voltage at input terminal a (voltage at input terminal a - ground terminal d) is small, the voltage at output terminal C (voltage at output terminal C - ground terminal d) is large, and conversely, the voltage at input terminal a is large. In this case, the voltage at the output terminal C is reduced, and the other electrical components except the heating element 6 and the heat sensitive element 9 are provided in the controller 12.

Next, to explain how to use the electric carpet configured as above, when performing electric heating with the electric carpet alone, operate the power switch 36 using the power switch 3I of the controller I2 to turn it on. The heating element 6 is energized to perform heating by the electric carpet. In this case, the heating temperature of the carpet body 10 is set to a predetermined temperature by varying the resistance value of the variable resistor 42 by operating the temperature adjusting child 32 of the carpet body 10 of the controller 12.

In addition, when performing electric heating by using an electric carpet and a Yagura Kotatsu together, connect the power cord of the Yagura Kotatsu to the outlet 30 of the controller 12 of the carpet body 10, and place the Yagura Kotatsu approximately in the middle of the carpet body 10. Then, the power switch 3 is turned on by the power switch heir 31 of the controller 12.
6 is operated to turn on, and electricity is supplied to the heating element 6 of the carpet main body IO, and also to the heating element (not shown) of the tower kotatsu, thereby heating the electric carpet and heating the tower kotatsu. In this case, the heating temperature of the carpet body 10 is set to a predetermined temperature by changing the resistance value of the variable resistor 42 by operating the child 32 for temperature adjustment of the carpet body 10 of the controller 12, and the heating temperature of the carpet body 10 is set to a predetermined temperature. Heirloom 3 for adjusting the temperature of the Yagura Kotatsu in vessel 12
In operation 3, the resistance value of the indirect heating resistor 39 is varied, the opening temperature of the bimetal switch 40 is varied, and the heating temperature of the tower kotatsu is set to a predetermined temperature for use.

When the carpet body 10 is used simply as a carpet, do not remove the upper case 19 from the lower case 20 and attach a protector to the upper case 19 and the lower case 20 to prevent dust from entering. Use it as just a carpet.

Next, the operation of the electric carpet and the operation of the yagura kotatsu when the above-mentioned electric carpet is used alone for electric heating and when the electric carpet and yagura kotatsu are used together will be explained together with the control circuit shown in FIG.

First, the operation of the electric carpet will be explained.

When the power switch 36 is turned on by operating the power switch 31, a voltage is supplied to the power terminal of the control circuit 43, and the input terminal a of the control circuit 43 is supplied with the voltage of the heat sensitive body 9 at the initial stage of energization when the temperature is low. The voltage across the variable resistor 42, which has a large impedance (impedance of the heat-sensitive layer 9c) and is a divided voltage, is small and only a small input voltage is applied, and the output voltage of the output terminal C of the control circuit 43 is large. is applied between the gate and cathode of the thyristor 38, the thyristor 38 is turned on, and when the thyristor 38 is turned on, the relay coil 37a of the relay 37 is energized, and the relay contact 37b of the relay 37 is closed.
When the relay contact 37b of the relay 37 is closed, the heating element 6 is energized and generates heat, and the entire surface of the carpet body 10 is heated by the heat generated by the heating element 6, thereby providing electric heating by the electric carpet. Let's do it. When the heating element 6 generates heat and the temperature of the carpet main body IO rises, the impedance of the heat sensitive element 9 that senses the heating temperature by the heating element 6 decreases, the voltage across the variable resistor 42 increases, and the control circuit 43 The output voltage of the output terminal C becomes smaller and the thyristor 38 turns off, and the turning off of the thyristor 38 cuts off the electricity to the relay coil 37a of the relay 37, opens the relay contact 37b of the relay 37, and generates heat. The power supply to the body 6 is stopped.

Thereafter, the above operation is repeated to control the electric heating temperature of the electric carpet to the temperature set by the variable resistor 42.

In the above case, the setting value of the on/off operation of the thyristor 38 is determined by the resistance value of the variable resistor 42, and when the resistance value of the variable resistor 42 is small, the input voltage of the control circuit 43 becomes small, making it more heat sensitive. Unless the impedance of the heat sensitive body 9 becomes small, it will not turn off and be controlled at a high temperature. Conversely, when the resistance value of the variable resistor 42 is large, the input voltage of the control circuit 43 will become large and the impedance of the heat sensitive body 9 will be low. It also operates off and is controlled to a lower temperature.

Next, the operation of the yagura kotatsu and the operation of the outlet 30 to which the power cord of the yagura kotatsu is connected will be described.

When the power cord of the tower kotatsu used together is connected to the outlet 30, the power is supplied to the tower kotatsu via the bimetal switch 40, and the indirect heating resistor 39 is also energized via the bimetal switch 40, causing the indirect heating resistor 39 to generate heat. When the temperature of the indirect heating resistor 39 rises to a predetermined temperature, the bimetal switch 40 is opened to stop the power supply to the outlet 30 and the power supply to the tower kotatsu. Then, when the bimetal switch 40 cools down, the bimetal switch 40 closes again, causing the tower kotatsu and the indirect heating resistor 3 to close.
9 and when the temperature of the indirect heating resistor 39 rises to a predetermined temperature, the bimetal switch 40 is opened and the electrical outlet (3) is turned on.
The power supply to 0 is stopped, and the power supply to the Yagura Kotatsu is stopped.

Thereafter, the heating temperature of the tower kotatsu is controlled to the temperature set by the indirect heating resistor 39 by repeating the above-described operation.

In the above case, the amount of electricity applied to the tower kotatsu depends on the resistance value of the indirect heating resistor 39, and the smaller the resistance value of the indirect heating resistor 39, the more electricity is applied to the tower kotatsu, and the higher the heating temperature of the tower kotatsu. As the resistance value of the indirect heating resistor 39 is increased, the amount of current applied to the tower kotatsu decreases, and the temperature of the tower kotatsu becomes lower.

Effects of the Invention Since the electric carpet of the present invention has the above-described structure, the controller can be operated from anywhere on the carpet body without moving the body, making it extremely convenient to use.

In addition, as an effect of the embodiment of the present invention, when it is not used as an electric carpet, the controller can be removed and it can be used as a general carpet, making it an all-season type. It is centrally located, making connection work easy and convenient.
Moreover, it is safe because the temperature can be controlled by the outlet itself, and on top of that, the bimetallic switch is turned off by the heat from the kotatsu, so it is safe against abnormal overheating.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway plan configuration diagram showing an embodiment of the electric carpet of the present invention, Fig. 2 is an enlarged sectional view of the main part of Fig. 1, and Fig. 3 is an upper case of the controller shown in Fig. 2. A plan view, FIG. 4 is a circuit diagram of an embodiment of the electric carpet of the present invention, and FIG. 5 is a plan diagram of a conventional electric carpet. In the drawings, 6 is a heating element, 10 is a carpet main body, II is a central part, and 12 is a controller. Agent: Patent attorney Takeshi Sugiyama (and 1 other person) Figure 2

Claims (1)

[Claims] 1. In an electric carpet in which a heating element that generates heat when energized is disposed in the carpet body, a controller that controls the heating temperature to a predetermined temperature by controlling the energization to the heating element is installed approximately in the center of the carpet body. An electric carpet characterized by being arranged in a section.