JPH02120489A - Electric power transmitter for window frame - Google Patents

Abstract

PURPOSE:To drive a fan by a method in which a power-receiving coil is provided to the position facing a power-transmitting coil of a power-receiving unit, and electric power is supplied to the window frame by electromagnetic connection with the power-transmitting coil to give AC by detecting the closing of window. CONSTITUTION:A power-transmitting coil 3 is attached to the position to be touched by window glass frame 2 of a window frame 1, and a power-receiving unit 4 is attached to the position facing the unit 3 of the frame 2. A fan 5 is attached to the frame 2. As a detector for closing window, a permanent magnet 22 is provided to the unit 4, and a lead switch 13 is provided to the unit 3. When the window is closed, it is detected by the magnet 22 and the switch 13, and a power-transmitting coil L1 is driven to cause AC to generate on both ends of a power-receiving coil L2 set on the frame 2 in order to supply power. The fan 5 attached to the frame 2 can thus be operated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a window frame and a power supply device provided in a window glass frame for supplying power to a fan or the like attached to the window glass frame.

[Background of the invention]

Conventionally, no method has been proposed for supplying power to a window frame that slides within the window frame from the wall on which the window is installed. Therefore, it was not possible to install ventilation fans or the like on the windows themselves. There is also a known device that uses part of the window to install a wind fan, but in this case, the window fan is installed with part of the window open, so it is difficult to completely open or close the window. I couldn't do it.

[Problem to be solved by the invention]

The technical problem of the present invention is to directly attach a fan or the like to a window glass frame that slides within the window frame, and to supply power to drive the fan or the like when the window is closed.

[Means to solve the problem]

The invention of claim 1 of the present application includes a power transmission unit provided at an end of a window frame, and a power reception unit provided at a position that contacts the power transmission unit when the window glass frame that slides within the window frame is closed. A power transmission device for a window frame that supplies power to the window glass frame, comprising: a power transmission coil provided in the power transmission unit; a closing detection means for detecting closing of the window; a power supply means for supplying an alternating current to the power transmission coil when the closing of the window is detected by the means; and a power reception coil that is provided at a position facing the power transmission coil of the power reception unit and receives power by electromagnetic coupling with the power transmission coil. It is characterized by comprising the following.

Further, the invention of claim 2 of the present application includes a power transmission unit provided at the end of the window frame, and a position where the window glass frame that slides within the window frame comes into contact with the power transmission unit when the window frame is closed. A power transmission device for a window frame that supplies power to the window glass frame, the power transmission device comprising: a power reception unit; including,
High-frequency oscillation means for generating high-frequency oscillation when the closing detection means detects the closing of the window; modulation means for modulating the high-frequency oscillation signal at a constant frequency; and a power transmission coil provided at a position facing the power transmission coil of the power receiving unit. A power receiving coil that receives power by electromagnetic coupling with the power receiving coil, and a determining means provided at one end of the power receiving coil for determining whether or not the obtained AC signal is modulated by a predetermined frequency. It is.

(Function) According to the invention of claim 1 of the present application having such features, when the window is closed, the detection means detects the closing and drives the power transmission coil of the power transmission unit. . By doing so, an alternating current voltage is induced across the power receiving coil of the power receiving unit provided in the window glass frame, and power is transmitted. According to the invention of claim 2 of the present application, the high frequency that drives the power transmission coil is modulated by switch operation, and power and signals are sent to the window side.

〔Effect of the invention〕

Therefore, according to the invention of claim 1, power can be supplied to the window frame simply by attaching the power transmission unit to a part of the window frame and the power reception unit to the window frame. Therefore, there is no need to provide an opening for a ventilation fan in the wall, a ventilation fan can be easily attached to an existing window, and the window itself can be opened and closed completely. By supplying power while the windows are closed, it is possible to rotate the fan and ventilate the room. Further, according to the invention of claim 2 of the present application, it is possible to not only supply power to the window glass frame but also transmit signals. Accordingly, this signal allows the fan to be used for exhaust or intake. Furthermore, by making the window itself double glazed and installing a blind between them, it is possible to control the opening and closing of the blind. No. 1 of this application. In the second invention, power is transmitted by non-contact electromagnetic coupling without using electrodes, so there is no risk of electrical leakage even if there is condensation or raindrops on the outside, improving safety. You can get the effect that you can.

[Explanation of Examples]

FIG. 1 is a circuit diagram showing an embodiment of a power transmission device according to the invention of claim 1 of the present application, and FIG. 2 is a sectional view of the power transmission device when it is closed. As shown in this figure, a power transmission unit 3 for transmitting electric power is attached to a side wall of a window frame 1 at a position where it comes into contact with the window glass frame 2 when the window is closed. A power receiving unit 4 that receives power from the power transmitting unit 3 is provided at a position of the window glass frame 2 facing the power transmitting unit 3. A fan 5 driven by a DC power source obtained from a power receiving unit 4 is installed within the window glass frame 2.

For example, as shown in FIG. 1, the power transmission unit 3 is connected to a commercial AC power source via a switch swi, and has a rectification/smoothing circuit 11 comprising a diode bridge DB for rectifying the AC voltage and a capacitor C1 for smoothing the AC voltage. . A resonant circuit consisting of a power transmission coil L1 and capacitors C2 and C3 is connected to one end of the DC voltage, and a power switching element such as a power MO5FETI is connected to the other end of the resonant circuit.
2 and a resistor R1 are connected in series. Further, the power transmission unit 3 is provided with a reed switch 13 having one end provided with a voltage obtained by dividing the power supply voltage by resistors R2 and R3. The other end of the reed switch 13 is connected to the gate of the power MO5FET 12 via a resistor R4, and its gate terminal is grounded via a resistor R5. The midpoint of the capacitors C2 and C3 of the resonant circuit is connected to the source of the power MO3FET12. The power MO3FET 12 oscillates a high frequency, for example, 80 to 100 KHz, determined by the power transmission coil L1 and the capacitors C2 and C3. Here, the resonant circuit and power MO3FET12
constitutes a power supply means that supplies alternating current to the power transmission coil when the closed state is detected. Now, power transmission unit 3
As shown in the sectional view in FIG. 2, the case has a ferrite core 14 facing the window side and having a figure-8 cross section, and the above-described power transmission coil L1 is wound around this ferrite core 14. Further, a reed switch 13 is provided at a position facing the power receiving unit 4. Other circuit components of the power transmission unit 3 are mounted on a printed circuit board 15, and the void inside the case is filled with epoxy resin 16.

On the other hand, the power receiving unit 4 also has a cross section 8 similar to the power transmitting coil 1.
Power receiving coil L2 wound around a letter-shaped ferrite core 21
A permanent magnet 22 is provided at a position facing the reed switch 13. The reed switch 13 of the power transmission unit 3 and the permanent magnet 22 of the power reception unit 4 constitute a closure detection means for detecting the closure of a window and transmitting power.

Both ends of the power receiving coil L2 are connected to a rectifier/smoothing circuit 2-3 comprising diodes DI, D2 and a smoothing capacitor C5. Epoxy resin 24 is filled in the gap of the power receiving unit 4.
is filled, and its DC power terminal is connected to the motor 6 for driving the fan 5 provided within the window glass frame 2, as described above.

In this way, if the switch SWI connected in series to the commercial power source is turned on while the window is closed, the reed switch 13 is closed by the permanent magnet 22, and the power transmission unit 3 oscillates at a constant frequency. Therefore, the coils LL, L
Due to the electromagnetic coupling between the two, high frequency waves are transmitted to the power receiving unit 4 side, and the fan 5 provided in the window frame can be rotated.

In this embodiment, the power receiving unit 4 is provided with a permanent magnet 22 as a closing detection means for detecting the closing of a window, and the power transmitting unit 3 is provided with a magnet 13 for detecting the proximity thereof, but a Hall IC is used instead of a reed switch. It goes without saying that a photoelectric switch or the like for detecting the proximity of the power receiving unit 4 may be provided. In this embodiment, a high frequency is oscillated by a resonant circuit consisting of the coil L1 and a capacitor, but it is also possible to directly supply commercial alternating current to the coil L1 using the output of the closure detection means. Furthermore, if the motor 6 is an AC motor, the AC voltage obtained at the power receiving coil L2 can be directly applied to the motor without providing a rectifying and smoothing circuit. Furthermore, fans of various shapes, such as a cylindrical cross-flow fan, can be used.

Next, FIG. 3 is a circuit diagram showing the configuration of the power transmission unit 2 of the power transmission device according to the invention of claim 2 of the present application. In this figure, the same parts as in the embodiment described above are given the same reference numerals. In this embodiment, the power transmission unit 3 is provided with a modulation means. The modulation means 17 includes a transistor Tri whose collector terminal is connected to the positive terminal of the power supply, and an oscillator 18. A constant voltage is supplied to the oscillator 18 by a resistor R6 and a Zener diode FZD.
By opening and closing switch SW2, low frequency, for example, IK H
This is an oscillator that starts/stops oscillation of a Z square wave. The output of the oscillator 18 is given to the base of the transistor Tr2. A resistor R7 is connected between the collector and base of the transistor Tri, and the resistor R7 is connected between the collector and the base of the transistor Tri.
A resistor R8 is connected between the collectors of the two collectors. The emitter of the transistor Tri is connected to high-frequency oscillation means for applying a high-frequency current to the power transmission coil L1, as in the first embodiment described above.

On the other hand, on the power receiving unit side, as shown in FIG.
A full-wave rectifier circuit 23 formed by I and D2 is connected, and one end of the power receiving coil L2 is also connected to a diode D3. The other end of the diode D3 is connected to a high frequency bypass capacitor C6 via a resistor R9, and further connected to a capacitor C7 for blocking DC components, the cathode of the diode D4, and the anode of the diode D5. The anode of the diode D4 is connected to the ground terminal. A diode D5, a capacitor C8, and a resistor RIO connected between the cathode of the diode D5 and the ground obtain a DC voltage at a predetermined level by rectifying the square wave signal, and the output thereof is given to the comparator 25. A reference voltage obtained by dividing a smoothed DC voltage by resistors R11 and R12 is applied to the reference input terminal of the comparator 25. Here, the block from the diode D3 to the comparator 25 constitutes a determining means for determining the presence or absence of modulation. The output terminal of the comparator 25 is connected to the base of the transistor Tr3. The emitter of the transistor 'r3 is grounded, and the relay coil of a relay X is connected between the collector and the power supply.The relay At one terminal of the power supply, a normally closed contact 1a and another normally closed contact 2b are connected to the ground end, and a common contact 1c.

A motor 6 is connected between the two. Similar to the first embodiment described above, the motor 6 rotates the fan 5 in the window glass frame.

In this embodiment as well, by turning on the switch SWI when the window glass frame 2 is closed, the permanent magnet 22 approaches the reed switch 13 and starts oscillating. If the switch SW2 is not turned on at this time, the high frequency signal is directly transmitted to the power receiving unit 4 side as in the first embodiment described above.

In this case, since it is not modulated, the high frequency signal is bypassed by capacitor C6. Therefore, the voltage at the non-inverting input terminal of the comparator 25 is almost at the ground level. Therefore, transistor Tr3 is in an off state and relay X is not driven. Therefore, the motor 6 is energized in the direction of arrow A, and the fan 5 can be rotated, for example, in the exhaust direction. Then, when the switch SW2 is turned on, the high frequency signal becomes a signal modulated with a low frequency of IK)1z. Therefore, at that time, the high frequency signal is bypassed via the resistor R9 and the capacitor C6, and a square wave signal of IKIlz is obtained at one end of the capacitor C7. and diode D5. LKI by resistor RIO and capacitor C7
! The square wave component of z is rectified, and a constant DC voltage is applied to one terminal of the comparator 25. Therefore, comparator 25 is inverted, transistor Tr3 is turned on, and relay X is driven to invert its contacts. Then, the motor 6 is energized in the direction of arrow B and rotates in the opposite direction, for example, in the intake direction. Therefore, the fan in the window glass frame 2 can be rotated forward and backward by the switch SW2.
Exhaust and intake can be switched.

In the second embodiment, the fan is rotated forward and backward by switching a switch to switch between intake and exhaust. It is also possible to apply the output of the power receiving unit to a motor for opening and closing blinds to open and close the blinds.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of a power transmitting unit and a power receiving unit according to the invention of claim 1 of the present application, and FIG.
The figure is a sectional view showing the configuration. Further, FIG. 3 is a circuit diagram showing the configuration of the power transmission unit according to the invention of claim 2 of the present application, and FIG. 4 is a circuit diagram showing the configuration of the power receiving unit. 1-.-Window frame unit 6 14.21 Means 22-Ta Ll coil 2--Window glass frame 4--1--Power receiving unit/motor 13--...S--Ferrite core-- Permanent magnet 25 Power transmission coil 111 Power receiving patent applicant Tateishi Electric Co., Ltd. Agent Patent attorney Kanki Okamoto (1 other person)

Claims (2)

[Claims] (1) It has a power transmission unit installed at the end of the window frame, and a power reception unit installed at a position that comes into contact with the power transmission unit when the window glass frame that slides inside the window frame is closed, and A power transmission device for a window frame that supplies power to a window glass frame, comprising: a power transmission coil provided in the power transmission unit; a closing detection means for detecting the closing of the window; and a window closing detection means configured to detect the closing of the window. a power supply means for supplying an alternating current to the power transmission coil when the closure is detected; a power reception coil that is provided at a position facing the power transmission coil of the power reception unit and receives power through electromagnetic coupling with the power transmission coil; A power transmission device for a window frame, comprising: (2) It has a power transmission unit installed at the end of the window frame, and a power reception unit installed at a position where it comes into contact with the power transmission unit when the window glass frame that slides inside the window frame is closed. A power transmission device for a window frame that supplies power to a window glass frame, the device comprising: a closing detection means for detecting the closing of a window; and a power transmission coil provided in the power transmission unit; a high-frequency oscillation means for generating high-frequency oscillation when detecting the closing of a window; a modulation means for modulating the high-frequency oscillation signal at a constant frequency; A power receiving coil for a window frame, comprising: a power receiving coil that receives power by coupling; and a determining means provided at one end of the power receiving coil for determining whether or not the obtained AC signal is modulated by a predetermined frequency. Transmission device.