JP2002075525A - Method of separating electric power supply plug, electric power supply plug, and electrical equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an electric arc from being generated when an electric power supply plug is separated from an electric power supply socket by remote control. SOLUTION: There are provided a bidirectional thyristor 14 operated based on a trigger signal when the trigger signal is input, the electric power supply plug 1 having a separation driving means for conducting a separation operation for the plug 1 based on the operation of the thyristor 14, and a micro-computer 11 for outputting the trigger signal to the thyristor 14 from the zero crossing of a sine wave of a commercial electric power supply supplied to the plug 1 after the lapse of a preset time, when an indication for the separation of the plug 1 is issued from an operation part 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power plug detaching method for detaching a power plug from a power outlet by remote control, a power plug, and electric equipment.

[0002]

2. Description of the Related Art Conventionally, as a method of detaching a power plug from a power outlet by remote control, see, for example,
There is an electric device disclosed in Japanese Patent Application No. -281580.
FIG. 5 is a cross-sectional view showing a configuration of a power plug used in a conventional electric device. FIG. 5A is a cross-sectional view showing a state where the power plug is inserted into a power outlet, and FIG. () Shows a cross-sectional view showing a state where the power plug is detached from the power outlet.

In FIG. 1, reference numeral 51 denotes a power plug, which is a starting means (not shown) provided on an electric equipment main body (not shown).
A plunger 53 having a driving section 52 driven by the operation of the above is provided inside. Reference numeral 54 denotes an extruding rod connected to the driving unit 52 and provided in parallel with the blade 55.
6 is slidably held and fixed so as to protrude by the same length as the protruding portion of the plug blade 55 protruding from 6. 57 is a power line,
58 is a signal line, 59 is a power cord, 60 is a power outlet, and 61 is a receptacle of the power outlet 60.

Next, the operation of the conventional example will be described. First, when using the power supply main body, the protruding portion of the plug blade 55 of the power plug 51 is inserted into the receptacle 61 of the power outlet 60 so that the push rod 54 protruding from the power plug 51 is pressed into the power plug 51. After the use of the power supply device main body, the drive unit 52 of the plunger 53 of the power supply plug 51 is driven via the signal line 58 by operating the starting means provided in the power supply device main body. When the push rod 54 pushes the power outlet 60, the power plug 51 is disconnected from the power outlet 60.

[0005]

A conventional electric device for detaching a power plug from a power outlet by remote control is constructed as described above.
Is very convenient because it is disconnected from the power outlet 60. However, since the timing of detaching the power plug from the power outlet is at the time of operation by the activation means, an arc may fly between the plug blade 55 of the power plug 51 and the receptacle 61 of the power outlet 60 depending on the timing of detachment. And the arc generates heat,
There has been a problem that it may be deformed or welded.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem. When detaching a power plug from a power outlet by remote control, the time required for the power plug to be disconnected from the power outlet is reduced by the time of commercial power supply. An object of the present invention is to provide a power plug detaching method, a power plug, and an electric device which are located near a time position of a voltage of zero volt in a sine wave (hereinafter, referred to as a zero cross) and which does not generate an arc when the blade and the receptacle 1 are detached. I do.

[0007]

According to a first aspect of the present invention, there is provided a power plug detaching method for detaching a power plug from a power outlet by remote operation. After the disconnection operation starts, a trigger signal is output to the trigger means so that the power plug is disconnected from the power outlet near the zero crossing of the sine wave of the commercial power supplied to the power plug, and the power is supplied based on the operation of the trigger means. This is to start the operation of detaching the plug.

A power plug detaching method according to a second aspect of the present invention is a power plug detaching method for detaching a power plug from a power outlet by remote operation. A trigger signal is output to the trigger means after a lapse of a preset time from the zero cross of the sine wave of the supplied commercial power, and the detachment operation of the power plug is started based on the operation of the trigger means.

A power plug according to a third aspect of the present invention is a power plug detached from a power outlet by remote operation, after a trigger signal is input, from a zero cross of a sine wave of a commercial power supplied to the power plug. A trigger unit that operates after a preset time has elapsed, a detachment driving unit that performs a detachment operation of a power plug based on the operation of the trigger unit, and a trigger for detaching the power plug by remote control when the trigger unit is instructed. Control means for outputting a trigger signal.

A power plug according to a fourth aspect of the present invention is a power plug which is detached from a power outlet by remote control, in which a trigger signal is inputted, and a trigger means which operates based on the trigger signal, and an operation of the trigger means. When the detachment drive unit performs detachment operation of the power plug based on the instruction, and when the detachment of the power plug is instructed by remote control, after the detachment operation starts, the power is supplied near the zero cross of the sine wave of the commercial power supplied to the power plug. Control means for outputting a trigger signal to the trigger means so that the plug is detached from the power outlet.

A power plug according to a fifth aspect of the present invention is a power plug which is detached from a power outlet by remote control, wherein a trigger signal is input, the trigger means operates based on the trigger signal, and an operation of the trigger means. A disconnection driving means for performing a disconnection operation of the power supply plug based on a predetermined time after a zero-crossing of a sine wave of the commercial power supplied to the power supply plug when a command to detach the power supply plug is given by remote control. Control means for outputting a trigger signal to the trigger means later.

An electric device according to a sixth aspect of the present invention is an electric device, wherein a power plug connected to the electric device via a power cord is detached from a power outlet by remote operation from an operation unit of the electric device body. After the trigger signal is input, a trigger unit that operates after a predetermined time elapses from a zero cross of a sine wave of the commercial power supplied to the power plug, and a detachment operation of the power plug based on the operation of the trigger unit And a control means for outputting a trigger signal to the trigger means via a power cord when there is an instruction for detachment of the power plug from the operation unit.

According to a seventh aspect of the present invention, there is provided an electric device for detaching a power plug connected to the electric device via a power cord from a power outlet by remote control from an operation unit of the electric device body. A trigger signal to which a trigger signal is input and operated based on the trigger signal; a power plug having detachment driving means for performing a detachment operation of the power plug based on the operation of the trigger means; Control means for outputting a trigger signal to the trigger means so that the power plug is separated from the power outlet near the zero crossing of the sine wave of the commercial power supplied to the power plug after the separation operation is started when the disconnection instruction is issued; It is provided with.

According to an eighth aspect of the present invention, there is provided an electric device, wherein a power plug connected to the electric device via a power cord is detached from a power outlet by remote operation from an operation unit of the electric device body. A trigger signal to which a trigger signal is input and operated based on the trigger signal; a power plug having detachment driving means for performing a detachment operation of the power plug based on the operation of the trigger means; A control means for outputting a trigger signal to the trigger means after a predetermined time elapses from a zero-crossing of the sine wave of the commercial power supplied to the power plug when there is an instruction for detachment.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a block diagram showing a configuration of an electric device according to the present invention, and FIG. 2 is an overall view showing an example of the electric device. Here, an example of a vacuum cleaner is shown. 3A and 3B are cross-sectional views showing the configuration of the power plug according to this embodiment. FIG. 3A is a cross-sectional view of the power plug, and FIG. 3B is a state in which the power plug is inserted into a power outlet. FIG.

In FIG. 1, reference numeral 1 denotes a power plug, 2 denotes a power cord, and 3 denotes a main body of an electric device. In this case, a vacuum cleaner is used. Reference numeral 4 denotes a power outlet, 5 denotes a coil, 6 denotes an overheat prevention device comprising a fuse or a thermistor for preventing abnormal heating of the coil 5, 7 denotes a plug blade of the power plug 1, and 8 denotes a plug of the power outlet 4. Receptacle, 10
Is a power supply circuit of the electric equipment 3, 11 is a microcomputer built in the electric equipment 3, 12 is a motor supplied with power from the power supply circuit 10, 13 is an operation unit for performing various operations of the electric equipment 3, 14 is a coil 5 This is a bidirectional thyristor which is a trigger means for flowing a current through the thyristor.

2 and 3, reference numeral 1 denotes a power plug, and a case 22 and a case 2 formed of heat-resistant resin.
2 is provided. Reference numeral 7 denotes a pair of blades formed by bending a metal plate, and is fitted into the groove 22 a of the case 22. Reference numeral 7a denotes a protruding portion of the blade 7. Also,
The rear end of the blade 7 is connected to a power cord described later.

Reference numeral 25 denotes a storage space 22b at the center of the case 22.
, And has a bobbin 26 and a coil 5 wound around the bobbin 26. Reference numeral 28 denotes a push rod slidably provided in the storage space 22b of the case 22. The push rod 28 is provided at the tip of the plunger 29 and the plunger 29 which slides through the center of the coil 5. The sliding member 30 penetrates the opening 22c provided on the insertion side of the sliding member 30.

The plunger 29 has a cylindrical body 29a having a diameter corresponding to the inner diameter of the bobbin 26, and a head 29b smaller in diameter than the body 29a.
For example, c has a thread groove. The sliding body 30 is made of, for example, a shock-absorbing member such as rubber or plastic, and is screwed to the tip portion 29c of the plunger 29.

The bobbin 26 is fixed around its end by a yoke 31 formed of a magnetic steel plate.
A suction ring 32 for sucking the plunger 29 is fixed to one small hole 31a. On the outer periphery of the coil 5, there is provided an overheat prevention device 6 composed of a fuse or a thermistor for preventing abnormal heating of the coil 5.

Reference numeral 2 denotes a three-core power cord surrounded by an outer cover made of vinyl chloride, having a pair of power wires 36 and a signal wire 37, each of which is covered with an insulating tube. Power cord 2
Is electrically connected to the blade 7 and the solenoid 25. Reference numeral 4 denotes a power outlet, 4a denotes an outlet surface of the power outlet 4, and 8 denotes a receptacle of the power outlet 4.

Next, the operation of detaching the power plug from the power outlet by remote control according to this embodiment will be described. FIG. 4 is an explanatory diagram for explaining the operation of this embodiment.

First, when using the electric equipment 3 main body,
When the projection 7a of the blade 7 of the power plug 1 is inserted into the existing power outlet 4, the projection 7a of the blade 7 is inserted into the receptacle 8 of the power outlet 4, and the projection 7 of the blade 7 is inserted.
AC power is received from a. The AC power is supplied to the power supply circuit 10 of the electric device 3 via the power cord 2, and power is supplied to, for example, the motor 12 by operating the operation unit 13 to put the electric device 3 in a use state. .

At this time, the microcomputer 11 built in the electric equipment 3 grasps the state of the sine wave of the commercial power supplied to the power supply circuit 10. After the use of the electric device 3 main body, for example, the operation unit 13 of the electric device 3 is used.
The power plug 1
Enters withdrawal operation.

First, the microcomputer 11 grasps the state of the sine wave of the commercial power supply as shown in FIG. 4 and operates the power plug by operating a switch or the like provided on the operation unit 13 of the electric equipment 3. When there is a departure instruction of 1, from the zero crossing of the sine wave of the commercial power, which is calculated in advance through experiments or the like, about 5 m at the commercial power frequency of 50 Hz.
After about s, a trigger signal is output to the bidirectional thyristor 14. The trigger signal is, for example, 3 ms to
A pulse signal of about 5 ms is used.

When a trigger signal is output from the microcomputer 11 to the bidirectional thyristor 14, the bidirectional thyristor 14 conducts, and the alternating current is applied to the coil 5 of the solenoid 25 through the signal line 37 via the bidirectional thyristor 14. Power is supplied. When AC power is supplied to the coil 5, the solenoid 25 is excited and the suction ring 3 is excited.
The slide 2 attached to the tip of the plunger 29 strongly presses the outlet surface 4a of the power outlet 4 because the tip 2 attracts the tip of the plunger 29.

With this operation, the projection 7a of the blade 7 of the power plug 1 is disengaged from the receptacle 8 of the power outlet 4, and the power plug 1 can be detached from the power outlet 4. At this time, the timing at which the trigger signal is output to the bidirectional thyristor 14 is about 5 ms after the commercial power supply frequency is 50 Hz from the zero cross of the sine wave of the commercial power supply.
When the power supply is disconnected from the power supply outlet 4, the sine wave of the commercial power supply can be made to have a zero-cross just when the power supply plug is removed, so that the power supply plug can be safely removed from the power supply outlet without any arc.

In this embodiment, as an example,
The commercial power frequency is 5 from the zero cross of the sine wave of the commercial power.
At about 0 Hz, after about 5 ms, the bidirectional thyristor 14
The trigger signal is output to the power plug, but this is not limited to the case where the shape of the power plug or the configuration of the power plug is changed, and the power plug is detached from the power outlet. At this time, the trigger signal may be output so that the sine wave of the commercial power supply has a zero cross.

In this embodiment, an example of a vacuum cleaner has been described as an example of an electric device. However, any electric device that uses a power plug and needs to be detached from the power plug by remote control is applicable. The present invention may be applied to any electric device. Further, in this embodiment, the bidirectional thyristor 14 is used, but any trigger means may be used as long as it can supply AC power to the coil 5 based on a trigger signal from the microcomputer 11. You may do so.

Further, in this embodiment, the bidirectional thyristor 14 as the trigger means is arranged in the electric equipment 3, but the trigger means may be built in the power plug 1. In this case, the microcomputer 11 of the electric device 3 may output a trigger signal to the trigger means via the signal line 37 and supply AC power to the coil by the operation of the trigger means in the power plug. .

Further, a trigger means and a microcomputer for detaching the power plug are incorporated in the power plug 1,
By inputting a command signal for detaching the power plug from the outside of the power plug, the operation of the microcomputer in the power plug causes, for example, approximately 5 ms after the zero cross of the sine wave of the commercial power at a commercial power frequency of 50 Hz. Alternatively, the power plug may be detached by outputting a trigger signal to the trigger means.

Also, if an element or the like which conducts about 5 ms after the trigger signal is input and the commercial power supply frequency is 50 Hz from the zero cross of the sine wave of the commercial power supply is used as the trigger means, If a trigger signal is output to the trigger means without using a microcomputer, it is possible to safely remove the power plug without performing processing by the microcomputer.

[0033]

As described above, according to the first aspect of the present invention, when the disconnection of the power plug is instructed by remote control, after the disconnection operation is started, the vicinity of the zero cross of the sine wave of the commercial power supplied to the power plug is started. The trigger signal is output to the trigger means so that the power plug is detached from the power outlet, and the detachment operation of the power plug is started based on the operation of the trigger means. The power plug is disconnected from the power outlet near the zero cross of the sine wave of the commercial power supply, which has the effect of preventing arcing when the power plug is disconnected.

According to the second aspect of the present invention, when an instruction to detach the power plug is issued by remote control, the trigger is activated after a lapse of a preset time from the zero cross of the sine wave of the commercial power supplied to the power plug. Since the signal is output to the trigger means and the detachment operation of the power plug is started based on the operation of the trigger means, when the power plug is detached by remote control, the power plug is turned off near the zero crossing of the sine wave of the commercial power supply. It is possible to prevent an arc from being generated when the power plug is detached from the outlet.

According to the third aspect of the present invention, after the trigger signal is input, the trigger means which operates after a preset time has elapsed from the zero cross of the sine wave of the commercial power supplied to the power plug, Based on the operation of the trigger means,
A detaching drive unit for detaching the power plug, and a trigger signal is output to the trigger unit when the detachment of the power plug is instructed by remote control by the control unit. At the time of disconnection, the power plug is disconnected from the power outlet near the zero cross of the sine wave of the commercial power supply, which can prevent arcing when the power plug is disconnected and can be operated only by trigger means, so make a simple circuit configuration It has the effect that can be done.

According to the fourth aspect of the present invention, the trigger signal is inputted, and the trigger means operates based on the trigger signal, and the detachment driving means performs the detaching operation of the power plug based on the operation of the trigger means. When the control unit instructs to detach the power plug by remote control, the power plug is detached from the power outlet near the zero cross of the sine wave of the commercial power supplied to the power plug after the detachment operation is started. The trigger signal is output to the trigger means as described above, so when the power plug is detached by remote control,
The power plug is disconnected from the power outlet near the zero cross of the sine wave of the commercial power supply, which has the effect of preventing arcing when the power plug is disconnected.

According to the fifth aspect, the trigger signal is inputted, and the trigger means which operates based on the trigger signal, and the detachment driving means which detaches the power plug based on the operation of the trigger means are provided. When the control unit instructs the detachment of the power plug by remote control, a trigger signal is output to the trigger unit after a preset time has elapsed from the zero cross of the sine wave of the commercial power supplied to the power plug. As a result, when the power plug is detached by remote control, the power plug is detached from the power outlet near the zero cross of the sine wave of the commercial power supply, and there is an effect that it is possible to prevent arcing when the power plug is detached. .

According to the sixth aspect, after the trigger signal is inputted, the trigger means which operates after a preset time has elapsed from the zero cross of the sine wave of the commercial power supplied to the power plug, Based on the operation of the trigger means,
A power plug having a detachment drive unit for performing a detachment operation of the power plug, wherein the control unit outputs a trigger signal to the trigger unit via the power cord when an instruction for detachment of the power plug is issued from the operation unit. Therefore, when the power plug is detached by remote control, the power plug is detached from the power outlet near the zero cross of the sine wave of the commercial power supply, it is possible to prevent arcing when the power plug is detached, and it is possible to operate only with trigger means Therefore, there is an effect that a simple circuit configuration can be achieved.

According to the seventh aspect of the present invention, the trigger signal is input, and the trigger means operates based on the trigger signal, and the detachment driving means performs the detachment operation of the power plug based on the operation of the trigger means. A power plug having
When the control unit instructs the detachment of the power plug from the operation unit, after the detachment operation is started, the power plug is detached from the power outlet near the zero cross of the sine wave of the commercial power supplied to the power plug. Since the trigger signal is output to the trigger means, when the power plug is detached by remote control, the power plug is detached from the power outlet near the zero cross of the sine wave of the commercial power supply, thereby preventing arcing when the power plug is detached. It has the effect of being able to.

Further, according to the eighth aspect, the trigger signal is inputted, the trigger means which operates based on the trigger signal, and the detachment driving means which detaches the power plug based on the operation of the trigger means. A power plug having
When the control unit issues an instruction to remove the power plug from the operation unit, a trigger signal is output to the trigger unit after a preset time has elapsed from the zero cross of the sine wave of the commercial power supplied to the power plug. Therefore, when the power plug is detached by remote control, the power plug is detached from the power outlet near the zero cross of the sine wave of the commercial power supply, and there is an effect that it is possible to prevent arcing when the power plug is detached.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an electric device according to the present invention.

FIG. 2 is an overall view illustrating an example of an electric device.

FIG. 3 is a cross-sectional view illustrating a configuration of a power plug according to the embodiment.

FIG. 4 is an explanatory diagram for explaining an operation of the embodiment.

FIG. 5 is a sectional view showing a configuration of a power plug used in a conventional electric device.

[Explanation of symbols]

1 power plug, 2 power cord, 3 electrical equipment body,
4 power outlet, 5 coil, 6 overheat prevention device, 7 plug of power plug 1, 8 receptacle of power outlet 4, power circuit of electric equipment 3, 11 microcomputer, 12 motor, 13 operating section, 1
4 Bidirectional thyristor as trigger means.

Continued on the front page (72) Inventor Yoshitaka Maemura 1728-1 Komaeda, Hanazono-cho, Osato-gun, Saitama Prefecture Inside Mitsubishi Electric Home Equipment Co., Ltd. (72) Naoya Okubo 1728-1, Koeda, Hanazono-cho, Osato-gun, Saitama Mitsubishi Electric In Home Equipment Co., Ltd. (72) Inventor Hiroyuki Hanawa 1728-1 Komaeda, Hanazono-cho, Osato-gun, Saitama F-term in Mitsubishi Electric Home Equipment Co., Ltd. (Reference) 5E021 FA03 FB07 FB13 FB21 FC31 FC40 HB13 HC36 5E087 EE10 FF02 HH01 MM05 MM09 PP01 PP08 QQ03 RR34

Claims (8)

[Claims] In a power plug detaching method for detaching a power plug from a power outlet by remote control, when an instruction to detach the power plug is given by remote control,
After the detachment operation is started, a trigger signal is output to the trigger means so that the power plug is detached from the power outlet near the zero cross of the sine wave of the commercial power supplied to the power plug, and the operation of the trigger means is performed. A power plug detachment method, wherein the power plug detachment operation is started based on the power plug. 2. A power plug detaching method for detaching a power plug from a power outlet by remote operation, wherein when an instruction to detach the power plug is given by remote operation,
A trigger signal is output to the trigger unit after a lapse of a preset time from the zero cross of the sine wave of the commercial power supplied to the power plug, and the detachment operation of the power plug is started based on the operation of the trigger unit. A method of detaching a power plug. 3. A power plug detached from a power outlet by remote control, which operates after a preset time has elapsed from a zero-cross of a sine wave of commercial power supplied to the power plug after a trigger signal is input. Trigger means for performing, detachment driving means for performing the detachment operation of the power plug based on the operation of the trigger means, when there is an instruction to detach the power plug by remote control,
A power plug, comprising: a control unit that outputs a trigger signal to the trigger unit. 4. A power plug which is detached from a power outlet by remote control, a trigger signal is input, and a trigger means which operates based on the trigger signal; and a detachment operation of the power plug based on an operation of the trigger means. A detachment driving means for performing the operation, and when there is an instruction to detach the power plug by remote control,
Control means for outputting a trigger signal to the trigger means such that the power plug is disconnected from the power outlet near a zero cross of a sine wave of the commercial power supplied to the power plug after the disconnection operation is started. A power plug, characterized in that: 5. A power plug which is detached from a power outlet by remote control, a trigger signal is input, a trigger means which operates based on the trigger signal, and an operation of detaching the power plug based on an operation of the trigger means. A detachment driving means for performing the operation, and when there is an instruction to detach the power plug by remote control,
A power supply plug comprising: control means for outputting a trigger signal to the trigger means after a lapse of a preset time from a zero cross of a sine wave of commercial power supplied to the power plug. 6. An electric device for detaching a power plug connected to the electric device via a power cord from a power outlet by remote control from an operation unit of the electric device main body side, wherein after a trigger signal is input, From a zero cross of a sine wave of the commercial power supplied to the power plug, a trigger unit that operates after a preset time has elapsed, and a detachment driving unit that performs a detachment operation of the power plug based on the operation of the trigger unit. And a control unit that outputs a trigger signal to the trigger unit via the power cord when there is an instruction to remove the power plug from the operation unit. 7. An electric device for detaching a power plug connected to the electric device via a power cord from a power outlet by remote control from an operation unit of the electric device main body. Trigger means operating based on, based on the operation of the trigger means,
A power plug having a detachment drive unit for performing the detachment operation of the power plug, and when there is an instruction to detach the power plug from the operation unit, after the detachment operation is started, the commercial power supply supplied to the power plug is started. Control means for outputting a trigger signal to the trigger means so that the power plug is disconnected from a power outlet near a zero crossing of a sine wave. 8. An electric device for detaching a power plug connected to the electric device via a power cord from a power outlet by remote control from an operation unit of the electric device main body, wherein a trigger signal is inputted, and the trigger signal is inputted. Trigger means operating based on, based on the operation of the trigger means,
A power plug having a detachment drive unit for performing a detachment operation of the power plug, and when there is an instruction for detachment of the power plug from the operation unit, a zero-cross of a sine wave of the commercial power supplied to the power plug. Control means for outputting a trigger signal to the trigger means after a preset time has elapsed.