JP2008132257A - Drum type washer / dryer - Google Patents

Abstract

A drum-type laundry that can wirelessly transmit power and information between a door that opens and closes a slot provided on the front surface of the housing and the housing, and can simplify the configuration. Provide a dryer.
[Solution]
A power receiving unit 11 is provided in the lower part of the outer periphery of the pedestal 8 of the door 6, and a power transmitting unit 12 is provided in the lower part of the recess 4 of the housing 2. In addition, the power receiving unit 11 and the power transmitting unit 12 are positioned so that the two coils of each of the power receiving unit 11 and the power transmitting unit 12 face each other when the insertion port 5 is closed. Thus, in the closed state of the insertion port 5, each coil of the power transmission unit 12 on the housing 2 side and each coil of the power reception unit 11 on the door 6 side are electromagnetically coupled, so that the door is opened from the housing 2 side. Power is supplied to the 6 side and a signal is transmitted from the door 6 side to the housing 2 side.
[Selection] Figure 1

Description

  The present invention relates to a drum-type washing and drying machine including a housing having a loading port for laundry or the like on a front surface and a door that is rotatably provided to open and close the loading port.

  A drum-type washing machine or washing / drying machine is provided with a laundry input port on the front surface of a housing, and a door that opens and closes the input port. In such a drum type washing machine, it is considered to attach an electronic device or an electric device to the door side. However, the door of the washing machine is frequently opened and closed when the laundry is taken in and out, and the wiring for power supply to the door side equipment or signal output from the door side equipment to the housing side etc. Then, bending is repeated, and there is a possibility of disconnection, so there is a problem in reliability.

Patent Document 1 discloses a configuration in which power supply or wireless communication is performed in a non-contact state between an operation display unit detachably attached to an opening / closing lid and a charging coil and a control unit provided on the main body side. A vertical automatic washing machine is disclosed. According to this, the wiring between the lid side of the washing machine and the main body side becomes unnecessary, and the above-described problem can be solved.
JP 2002-085891 A

By the way, in the drum type washing and drying machine, a latch mechanism for latching (locking) the closed state of the door that opens and closes the laundry inlet is provided. It is configured not to occur. The drum type washing and drying machine is provided with a door switch that detects whether the door is open or closed, and a latch switch that detects whether the door is closed or not. . Further, the door switch and the latch switch are arranged at the peripheral edge of the insertion port.
If a device such as that described in Patent Document 1, that is, a device that wirelessly supplies power and transmits information is to be incorporated into the drum-type washing and drying machine having such a configuration, the peripheral portion of the inlet and the door The structure becomes complicated and the manufacturing cost increases accordingly.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to wirelessly transmit power and information between a door and a housing that opens and closes a slot provided on the front surface of the housing. Another object of the present invention is to provide a drum-type washing and drying machine that can be simplified in configuration.

In order to achieve the above-described object, the drum-type washing and drying machine of the present invention includes a housing having an input port for laundry or the like on the front surface, a water tank provided inside the housing, and a water tank inside the water tank. In a drum type washer / dryer comprising a drum provided rotatably and a door rotatably provided so as to open and close the charging port, for power transmission provided around the charging port A coil and a signal receiving coil; and a power receiving coil and a signal transmitting coil provided on the door so as to face the power transmitting coil and the signal receiving coil, respectively, in a state where the insertion port is closed; Power transmission means for controlling energization to the power transmission coil;
A signal transmission means that operates by power supplied from the power reception coil and controls energization of the signal transmission coil, and detects an open / closed state of the door based on a signal received by the signal reception coil And an open / close detecting means.

  If comprised in this way, when the power transmission means on the housing side energizes the power transmission coil in the closing state of the insertion port, the power reception coil on the door side positioned opposite to the power transmission coil Power is supplied. And a signal transmission means operate | moves with the electric power from this coil for electric power reception, and it supplies with electricity to the coil for signal transmission. Then, a voltage is induced in the casing-side signal receiving coil that is positioned opposite to the door-side signal transmitting coil. That is, a signal is transmitted from the door-side signal transmission means to the housing side via the power transmission coil and the signal reception coil. On the other hand, in the open state of the insertion port, since the power supply operation from the housing side to the door side is not performed, no signal is transmitted from the door side to the housing side. Therefore, the open / close detection means can detect the open / closed state of the door based on this signal.

  According to the present invention, power is supplied from the housing side to the door side without using a wiring between the door that opens and closes the insertion port provided on the front surface of the housing and the housing, and the housing from the door side. Signals can be transmitted to the body side, and the door switch that detects the open / closed state of the door is not required, so that the configuration can be simplified.

(First embodiment)
A first embodiment of the present invention will be described below with reference to FIGS.
1 and 2 show a schematic overall configuration of a drum type washing and drying machine, FIG. 1 is a longitudinal side view, and FIG. 2 is an external perspective view. The front surface (the left side surface in FIG. 2) of the housing 2 that forms the outer shell of the washing and drying machine 1 is formed from a front plate 2a, and an operation panel 3 having a large number of switches and a display unit is formed on the front surface. Is provided. In addition, a circular depression 4 is formed in the front plate 2a of the housing 2, and an insertion port 5 for taking in and out the laundry is formed in the center.

  A door 6 for opening and closing the insertion port 5 is attached to the housing 2 via a hinge portion 7 so as to be rotatable. As shown in FIGS. 1 and 3A and 3B, the door 6 is configured by attaching a front plate 9 and a rear plate 10 to an annular base 8, and the front plate 9 and the rear plate 10 are At least the central part or the whole is formed so as to be seen through. Further, the rear plate 10 has a shape that swells in a substantially truncated cone shape. In the state in which the door 6 is closed (the state shown in FIG. 1), the periphery of the base 8 and the front plate 9 is positioned in the recessed portion 4.

  In the door 6, a power receiving unit 11 is attached to the lower part of the right side of the base 8 in FIG. 1. On the other hand, on the housing 2 side, a power transmission unit 12 is attached to the lower part of the right side in FIG. The power receiving unit 11 has a power receiving coil 32 and a signal transmitting coil 33 as shown in FIG. As shown in FIG. 5, the power transmission unit 12 includes a power transmission coil 42 and a signal reception coil 43. In the power receiving unit 11 and the power transmitting unit 12, the power receiving coil 32 and the power transmitting coil 42 face each other and the signal transmitting coil 33 and the signal receiving coil 43 are in the closed state of the insertion port 5. They are arranged so as to face each other. Although details will be described later, the power receiving unit 11 and the power transmitting unit 12 supply power from the housing 2 to the door 6 and transmit signals from the door 6 to the housing 2. It is like that.

  In the housing 2, a cylindrical water tank 13 is supported by an elastic support device 14. Inside the water tank 13, a cylindrical drum 15 is accommodated coaxially with the water tank 13. The water tank 13 and the drum 15 are both arranged so that the central axis is inclined downward (lower right in FIG. 2). The drum 15 functions as a shared tank for dehydration and drying in addition to washing, and a large number of small holes 16 are formed in almost the entire region of the trunk (only a part is shown). Is provided with a plurality of baffles 17 (only one is shown).

  The water tank 13 and the drum 15 are respectively provided with openings 18 and 19 for putting in and out the laundry on the front surface. The opening 18 of the water tank 13 is connected to the charging port 5 in a watertight manner by a bellows 20, and the opening 19 of the drum 15 faces the opening 18 of the water tank 13. A balance ring 21 is provided around the opening 19 of the drum 15.

  A motor 22 that rotationally drives the drum 15 is attached to the back surface of the water tank 13. The motor 22 is an outer rotor type brushless DC motor, and the front end portion of the rotating shaft 23 is connected to the central portion of the back portion of the drum 15. That is, when the rotor of the motor 22 is rotated, the drum 15 is also rotated integrally with the rotor (so-called direct drive method), and a washing force is applied to the laundry accommodated in the drum 15 to perform washing. Operation, rinsing operation, and dehydration operation are performed.

  A water reservoir 24 is provided on the lower surface of the water tank 13, and a drain hose 26 is connected to the rear of the water reservoir 24 via a drain valve 25. A ventilation duct 27 is disposed above the water tank 13 so as to face the water tank 13, and a heater 28 is connected to the ventilation duct 27, and air flow for blowing air into the water tank 13 on the upstream side thereof. A fan 29 is provided, and a further upstream side of the blower fan 29 is connected to the water tank 13 so as to face the inside of the water tank 13. A water-cooled heat exchanger (not shown) is provided in the above-described path. With such a configuration, warm air is supplied into the water tank 13 and the drum 15 by the heater 28 and the blower fan 29. The hot air is dehumidified by a heat exchanger after it dehydrates the laundry, and is circulated again.

Next, a specific configuration of the power receiving unit 11 will be described with reference to FIG. 3A is a plan view of the main part viewed from the housing side, FIG. 3B is a cross-sectional view taken along the line XX in FIG. 3A, and FIG. 3C is the inside of the power receiving unit. FIG.
The power receiving unit 11 has a rectangular box shape, and is disposed between a metal holding plate 30 and a base 8 that form an annular shape for fixing the rear plate 10 to the base 8. It is being fixed on the base 8 (refer FIG.3 (b)). The power receiving unit 11 is configured by molding a circuit board 34 (see FIG. 3C) on which a power receiving coil 32 and a signal transmitting coil 33 are mounted with resin. A screw hole 36 for inserting the screw 31 is formed.

A plurality of wires (partially indicated by reference numerals 37 and 38) are drawn out from the end of the unit main body 35, and these wires 37 and 38 are used for an illumination LED 39 and a sensor 40 (see FIG. 5) to supply power and output signals.
In addition, the holding plate 30 is formed with an opening 41 located at a portion corresponding to each of the coils 32 and 33 in the power receiving unit 11, thereby preventing power and signal transmission / reception operations by the coils 32 and 33. There is no structure.

  On the other hand, the power transmission unit 12 provided on the housing 2 side is configured in substantially the same manner as the power reception unit 11, and although not shown in detail, the power transmission coil 42 and the signal reception coil 43 (see FIG. 5). ) And the like are molded with resin to form a rectangular box.

  4A and 4B show a schematic configuration of the LED case 44 that holds the illumination LED 39. FIG. 4A is an external perspective view, and FIG. 4B is a diagram showing a state where the LED case 44 is attached to a door. As shown in FIG. 4 (a), the LED case 44 is provided with an inclined portion 44a having an inclination in accordance with an inclination from the upper part to the lower part of the rear plate 10, and extended from the upper part of the inclined part 44a in the lateral direction. And has a flat portion 44b, and is configured to have a substantially square shape. The LED case 44 is made of resin, and an accommodation recess 44c for accommodating the illumination LED 39 is provided on the upper surface of the flat portion 44b, and wiring is provided on the inner surface of the inclined portion 44a and the lower surface of the flat portion 44b. An accommodation groove (not shown) for accommodating 37 and 38 is provided. And the LED 39 for illumination is arrange | positioned in the center of the accommodation recessed part 44c of the flat part 44b.

  Wirings 37 and 38 for supplying power from the power receiving unit 11 to the illumination LED 39 are introduced from the lower end of the inclined portion 44a into the accommodation groove and extend to the flat portion 44b. It is connected to the LED 39 for illumination through (not shown). As shown in FIG. 4B, the LED case 44 having the above-described configuration is disposed on the center right side (opposite to the hinge portion 7) of the outer peripheral portion of the inner surface (opposite surface to the housing 2) of the rear plate 10. Yes. Further, although not shown in detail, a sensor 40 is attached to the outer peripheral portion of the outer side surface (surface on the housing 2 side) of the rear plate 10. As the sensor 40, a temperature sensor, a humidity sensor, or the like is provided. In the case of this configuration, the lighting LED 39 is located in a place where it does not directly touch the laundry, washing water, etc., while the sensor 40 is located where it directly touches the laundry, washing water, etc.

  FIG. 5 shows an electrical configuration of the power receiving unit 11 and the power transmitting unit 12 and their peripheral circuits. As shown in FIG. 5, the casing 2 side has an oscillation circuit 45, a detection circuit 46, a power transmission coil 42, a signal reception coil 43, a heater relay 47 for disconnecting power to the heater 28, A drive circuit 49 for driving the fan motor 48 of the fan 29, a display control circuit 50 for controlling display on the display unit of the operation panel 3, and a control circuit 51 for controlling these operations (power transmission means and open / close operation) (Corresponding to detection means) is provided.

  Among these, the control circuit 51 is mainly composed of a microcomputer including a CPU, a ROM, a RAM, and the like. In the oscillation circuit 45, a DC voltage from a power supply circuit (not shown) is applied to both ends of the power transmission coil 42, and this energization is switched according to the oscillation signal from the control circuit 51. As a result, AC power is supplied to the power transmission coil 42. In this embodiment, the frequency of the oscillation signal is 50 kHz or 45 kHz, and these are changed according to the lighting control of the lighting LED 39 described later.

  Further, the detection circuit 46 detects a sensor information signal described later from an AC voltage induced at both ends of the signal receiving coil 43 and outputs the detected sensor information signal to the control circuit 51. The detection circuit 46 is configured to include, for example, a photocoupler, whereby the signal receiving coil 43 and the control circuit 51 are electrically insulated.

  On the other hand, on the door 6 side, a smoothing circuit 52, a detection circuit 53, a modulation / oscillation circuit 54, a power reception coil 32, a signal transmission coil 33, and an illumination circuit 55 for lighting an illumination LED 39 (corresponding to an illumination device). ), A sensor 40 and a control circuit 56 (corresponding to a signal transmission means) for controlling these operations. Among these, the control circuit 56 is mainly composed of a microcomputer including a CPU, a ROM, a RAM, and the like. In the smoothing circuit 52, AC power induced at both ends of the power receiving coil 32 is rectified and smoothed, and then supplied to the control circuit 56, the illumination circuit 55, and the sensor 40 as a predetermined DC voltage. The detection circuit 53 detects the frequency component of the AC power as a square-wave control signal and outputs it to the control circuit 56 (see FIGS. 6A and 6B). This control signal has an H level and an L level that can be input to the microcomputer of the control circuit 56.

  The control circuit 56 is configured to control lighting of the illumination LED 39 via the illumination circuit 55 based on the frequency of the control signal (details will be described later). Further, a detection signal from the sensor 40 is input to the control circuit 56. The control circuit 56 outputs a sensor information signal generated based on the detection signal to the modulation / oscillation circuit 54. The sensor information signal is frequency-modulated in the modulation / oscillation circuit, and then a signal as a modulated signal. It is output to the transmission coil 33.

Next, the operation of the above configuration will be described with reference to FIG.
When the power of the washing and drying machine 1 is turned on, power is supplied from a power circuit (not shown) to the control circuit 51 on the housing 2 side, and the control circuit 51 exchanges power with the power transmission coil 42 via the oscillation circuit 45. Electric power is supplied and an alternating magnetic field is generated around it. Here, when the door 6 is in the closed state, the power receiving coil 32 on the door 6 side is exposed to an alternating magnetic field generated around the power transmitting coil 42.
As a result, the power transmission coil 42 and the power reception coil 32 are electromagnetically coupled, and induced power is generated in the power reception coil 32, and power is supplied to the control circuit 56, the illumination circuit 55, and the sensor 40 on the door 6 side. Is done. The control circuit 56 receives a control signal for controlling lighting of the illumination LED 39 from the power receiving coil 32 via the detection circuit.

The control circuit 56 on the door 6 side generates a sensor information signal indicating a physical quantity (temperature, humidity, etc.) indicating the state in the drum 15 based on a detection signal from the sensor 40, and modulates / oscillates the sensor information signal. The modulated signal is output to the signal transmission coil 33 via the circuit 54. Then, an alternating magnetic field corresponding to the modulated signal is generated around the signal transmission coil 33.
At this time, since the signal receiving coil 43 on the housing 2 side is in a position exposed to this alternating magnetic field, the signal transmitting coil 33 and the signal receiving coil 43 are electromagnetically coupled and induced in the signal receiving coil 43. Electric power is generated. A sensor information signal extracted from the induced power via the detection circuit 46 is input to the control circuit 51. The control circuit 51 determines that the door 6 is in a closed state when the sensor information signal is input.

  The control circuit 51 controls the energization of the heater 28 during the drying operation, the rotational speed control of the fan motor 48, and the display unit of the operation panel 3 based on the temperature and humidity in the drum 15 obtained from the sensor information signal. Displays the remaining time at.

  On the other hand, when the door 6 is in the open state, the coils 32, 33, 42, 43 are not electromagnetically coupled, so that no power is supplied to each circuit including the control circuit 56 on the door 6 side. Therefore, no sensor information signal is input to the control circuit 51 on the housing 2 side. Thereby, the control circuit 51 determines that the door 6 is in the open state.

  6A and 6B are waveform diagrams of voltages and signals relating to lighting control of the lighting LED, where FIG. 6A is a terminal voltage of the power receiving coil 32, FIG. 6B is a control signal output from the detection circuit 53, and FIG. ) Indicates an illumination signal output from the control circuit 56. The lighting LED 39 is turned on by the lighting circuit 55 to which power is supplied only when the door 6 is in the closed state as described above. Further, as shown in FIG. 6, the lighting LED 39 is controlled to be turned on by the lighting signal from the control circuit 56, and is turned on when the lighting signal is at the H level and turned off when the lighting signal is at the L level. It has become.

  That is, the oscillation signal output from the control circuit 51 on the housing 2 side to the oscillation circuit 45 in the normal state is 50 kHz, and thus the AC power supplied to the power receiving coil 32 on the door 6 side is also 50 kHz. . The 50 kHz AC power is input to the control circuit 56 on the door 6 side through the detection circuit 53 as a control signal having the same frequency. When the illumination LED 39 is turned on, the control circuit 51 on the housing 2 side changes the frequency of the oscillation signal to 45 kHz. When the control circuit 56 on the door 6 side detects the rising edge of the control signal several times, for example, three times, and detects that the frequency has been changed from 50 kHz to 45 kHz, the lighting signal output to the lighting circuit 55 is set to H level. The lighting LED 39 attached to the rear plate 10 is turned on to illuminate the inside of the drum 15 from the door 6 side.

  When the illumination LED 39 is turned off, the control circuit 51 on the housing 2 side changes the frequency of the oscillation signal to 50 kHz. When the control circuit 51 on the door 6 side detects that the frequency of the control signal has been changed from 45 kHz to 50 kHz in the same manner as in the case of lighting described above, the illumination signal 39 output to the illumination circuit 55 is set to L level. Turn off the light.

According to the present embodiment described above, the following effects can be obtained.
A power receiving unit 11 is provided in the lower part of the outer periphery of the base 8 of the door 6, and a power transmitting unit 12 is provided in the lower part of the recess 4 of the housing 2. In the power receiving unit 11 and the power transmitting unit 12, the power receiving coil 32 and the power transmitting coil 42 face each other and the signal transmitting coil 33 and the signal receiving coil 43 are in the closed state of the insertion port 5. They were arranged so as to face each other. Thus, in the closed state of the insertion port 5, the power transmission coil 42 on the housing 2 side and the power reception coil 32 on the door 6 side are electromagnetically coupled, so that the housing 2 side is moved to the door 6 side. Electric power can be supplied.

  When the power is supplied as described above, the control circuit 56 of the power receiving unit 11 on the door 6 side transmits the sensor information signal based on the detection signal from the sensor 40 to the signal transmitting coil 33 and the signal receiving coil 43. To the control circuit 51 of the power transmission unit 12 on the housing 2 side. On the other hand, in the state where the insertion slot 5 is opened, no power is supplied to the power receiving unit 11, and therefore no sensor information signal is output. Therefore, the control circuit 51 can detect the opening / closing state of the insertion port 5 based on the presence / absence of such a sensor information signal, and can prevent a situation in which operation is started in an open state. Further, since the door switch having the conventional configuration is not required, the configuration can be simplified.

  In addition, as described above, since power and signals are transmitted and received wirelessly, there is no fear of disconnection of the wiring portion due to the opening / closing operation of the door 6, and reliability is improved. And since the open / closed state of the insertion slot 5 is detected wirelessly (non-contact), for example, a waterproofing measure, a moistureproof measure, a static electricity measure, etc., which are necessary in a conventional door switch using a micro switch are not required. The manufacturing cost can be reduced.

  Further, based on the sensor information signal described above, the control circuit 51 performs energization control to the heater 28 during the drying operation, rotation speed control of the fan motor 48, display of the remaining time on the display unit of the operation panel 3, and the like. Since this sensor information signal is based on the detection signal from the sensor 40 arranged in direct contact with the laundry or the washing water, the temperature and humidity in the drum 15 are accurately indicated. Therefore, the control circuit 51 can perform each operation and display operation after accurately detecting the temperature and dry state of the laundry in the drum 15.

  The illumination LED 39 attached to the rear plate 10 of the door 6 is turned on by the power supplied from the housing 2 side to the power receiving unit 11 on the door 6 side, and the interior of the drum 15 is illuminated from the door 6 side. This facilitates the design of the illumination direction and illumination intensity of the illumination LED 39 and allows the interior to be efficiently illuminated from the front direction of the drum 15, making it easier for the user to check the laundry or the like inside the drum 15. .

(Second embodiment)
The second embodiment of the present invention will be described below with reference to FIG. In addition, the same code | symbol is attached | subjected to the same part as 1st Example, description is abbreviate | omitted, and only a different part is demonstrated below.
FIG. 7 is a view corresponding to FIG. 3B in the first embodiment, and shows a cross section of the door and the power receiving unit. On the upper surface of the front plate 9, a polymer liquid crystal sheet 61 that is transparent when a voltage is applied between the electrodes (not shown) is provided at a portion other than the portion where the base 8 is placed. A sheet pressing plate 62 is provided so as to cover the upper surface of the polymer liquid crystal sheet 61, and the polymer liquid crystal sheet 61 is bonded in a state of being sandwiched between the front plate 9 and the sheet pressing plate 62. It is fixed. As with the front plate 9 and the rear plate 10, the sheet pressing plate 62 is formed so that at least the central part or the whole can be seen through.

  Wirings 63 and 64 are drawn out from the respective electrodes of the polymer liquid crystal sheet 61, and these wirings 63 and 64 are connected to the power receiving unit 11 along the pedestal 8. Thus, a voltage is applied from the power receiving unit 11 between the electrodes of the polymer liquid crystal sheet 61.

  According to the above configuration, in a state in which the insertion port 5 is closed by the door 6, depending on whether a voltage is applied between the electrodes of the polymer liquid crystal sheet 61 from the power receiving unit 11 on the door 6 side, the polymer It is possible to control whether or not the liquid crystal sheet 61 is transparent. That is, it is possible to switch between making the inside of the drum 15 visible from the outside using the door 6 as transparent glass, or making the inside of the drum 15 invisible from the outside using the door 6 as frosted glass.

In addition, this invention is not limited only to each Example mentioned above and described in drawing, The following deformation | transformation or expansion is possible.
If the power receiving coil 32 and the power transmitting coil 42 face each other and the signal transmitting coil 33 and the signal receiving coil 43 face each other in the closed state of the insertion port 5, the power receiving unit 11 is connected to the door 6. The power transmission unit 11 may be provided anywhere as long as it is a peripheral part, and the power transmission unit 11 may be provided anywhere as long as it is a peripheral part of the insertion port 5.
The sensor 40 may be provided as necessary. When the sensor 40 is not provided, the control circuit 56 on the door 6 side is configured to output a predetermined signal to the control circuit 51 on the housing 2 side when power is supplied. However, what is necessary is just to comprise so that the opening-and-closing state of the insertion port 5 may be detected based on this predetermined signal.

The frequency of the AC power supplied to the power transmission coil 42 can be changed as appropriate.
The control circuit 56 on the door 6 side may control so that the illumination LED 39 is always lit when power is supplied. In this way, the frequency of the AC power supplied to the power transmission coil 42 can be made constant, and the control of the control circuit 51 on the housing 2 side can be simplified.
The wires 37 and 38 for supplying power from the power receiving unit 11 to the lighting LED 39 may pass through the inside of the LED case 44.
The present invention can also be applied to a drum-type washing machine having no drying function.

1 is a longitudinal side view of a drum-type washing and drying machine according to a first embodiment of the present invention. External perspective view of drum type washer / dryer The power receiving unit provided in the door is shown, (a) is a plan view of the main part, (b) is a sectional view taken along line XX in (a), and (c) is a component layout diagram. It shows the schematic configuration of the LED case, (a) is an external perspective view, (b) is a diagram showing the state of attachment to the door Electrical configuration diagram of power reception unit, power transmission unit and its peripheral circuits Voltage and signal waveform diagrams related to lighting LED lighting control FIG. 3B equivalent view showing the second embodiment of the present invention.

Explanation of symbols

  In the drawings, 1 is a washing / drying machine, 2 is a housing, 5 is a slot, 6 is a door, 13 is a water tank, 15 is a drum, 32 is a power receiving coil, 33 is a signal transmitting coil, and 39 is an illumination LED. (Illuminating device), 40 is a sensor, 42 is a power transmission coil, 43 is a signal reception coil, 51 is a control circuit (power transmission means, open / close detection means), and 56 is a control circuit (signal transmission means).

Claims (3)

A housing having a loading port for laundry, etc. on the front surface, a water tank provided inside the housing, a drum rotatably provided inside the water tank, and rotating so as to open and close the charging port In a drum-type washing and drying machine comprising a door provided in a possible manner,
A power transmitting coil and a signal receiving coil provided in the periphery of the insertion port;
A power receiving coil and a signal transmitting coil provided on the door so as to face the power transmitting coil and the signal receiving coil, respectively, in a state where the insertion port is closed;
Power transmission means for controlling energization to the power transmission coil;
A signal transmitting means that operates by power supplied from the power receiving coil and controls energization to the signal transmitting coil;
A drum-type washing and drying machine comprising: an open / close detecting means for detecting an open / closed state of the door based on a signal received by the signal receiving coil. The door is configured to be visible inside the drum,
An illumination device for illuminating the inside of the drum is provided on the door,
The drum-type washing and drying machine according to claim 1, wherein the lighting device is operated by electric power supplied from a power receiving coil. A sensor for detecting a physical quantity indicating the state in the drum is provided on the door,
The sensor operates by power supplied from a power receiving coil,
The drum type washing and drying machine according to claim 1 or 2, wherein the detection signal of the sensor is transmitted through a signal transmission coil and a signal reception coil.

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