TWM622663U - Electric shock-proof power linker - Google Patents

Abstract

The power supply linkage device for preventing electric shock provided by this creation is connected to two external power sockets by a first power cord and a second power cord respectively, and the power cords are not electrically connected to each other, so that the Provide sufficient power independently and safely to avoid overheating, overloading and other problems of the power cord, and when one of the power cords is unplugged from the external power outlet, it can ensure that the unplugged power cord is not charged, Avoid leakage, electric shock, etc. In addition, the power supply linkage device can also sense the power consumption state of the load end of the first power line through a sensing module, and use a control switch to control the second power line according to the sensing result of the sensing module. When the power supply line is turned on or off, it can be turned on synchronously and turned off with a delay, so as to achieve the effects of power saving, noise reduction and intelligence.

Description

Electric shock-proof power linkage device

This creation is related to the power supply device, especially a power supply linkage device that prevents electric shock.

Press, the common linkage switch mainly has a main socket and a secondary socket for inserting an electrical appliance respectively, and can control the operation status of these electrical appliances synchronously. However, since the withstand current of a general household power socket is only 15 Ampere (A), and the allowable current of commercially available interlock switches is usually 15 amps, if these electrical appliances are high-power electrical products, such as: miter saws, saw tables, sanders, road machines, vacuum cleaners, etc. , When these electrical appliances operate at the same time, it is easy to make the total current exceed 15 amps, which may lead to overheating and overloading of the power socket and/or the linkage switch, resulting in melting, fire and other accidents.

In order to improve the aforesaid problems, the relevant manufacturers have connected the respective wires of the main socket and the sub-socket to two household power sockets respectively, and connected the two wires in parallel to increase the total current output. However, when one of the wires is unplugged from the power outlet, because the wires are in a parallel relationship, the plug of the other wire is still plugged into the power outlet, so that the unplugged wire is charged, and There is a risk of electric leakage and electric shock.

The main purpose of this creation is to provide an electric shock-proof power supply linkage device, which uses two sets of power cords to be connected to two external power sockets respectively, and the power cords are not electrically connected to each other, so that they can be independently connected to each other. Sufficient power is provided independently and safely, and when one of the power cords is unplugged from the external power socket, it can ensure that the unplugged power cord is not electrified to avoid leakage and electric shock.

Another object of the present invention is to provide an electric shock-proof power linkage device, which can detect the power consumption status of the load end of one of the two sets of power lines, and perform the power-off or conduction process on the other power line, To achieve the action of synchronous opening and delay closing, to achieve the effects of power saving, noise reduction and intelligence. Among them, the actions of synchronous startup, slow startup, synchronous shutdown, and delayed shutdown can also be set through the operation module 42 according to different application requirements to meet various requirements.

The reason is that, in order to achieve the above purpose, the present invention discloses a power supply linkage device for preventing electric shock, which mainly includes a first power cord, a second power cord, a sensing module and a control switch, wherein the first power cord is A power line and the second power line are respectively electrically connected to different external power sources, and the first power line and the second power line are configured independently of each other, so that the output current of the first power line is the initial current provided by the connected external power supply, and make the output current with the second power line the initial current provided by the external power supply connected; the sensing module is connected to the first power line an electrical connection to detect whether the first power line has power transmission and/or electromagnetic effects, and to generate a control signal; the control switch is arranged on the second power line and is electrically connected to the sensing module , to receive the control signal sent by the sensing module, and control the second power line to be in an on state or an off state according to the control signal.

In one embodiment, the power supply state is determined by measuring the voltage or current on the first power line, wherein the sensing module has a power sensing unit for measuring a power supply on the first power line. a voltage value and/or a current value, when the value of at least one of the voltage value and the current value is greater than a threshold, the control signal is made to include a message that controls the second power line to be in the conductive state; when the When the voltage value and the current value are less than or equal to the threshold value, the control signal is made to include a message for controlling the second power line to be in the disconnected state.

In one embodiment, the output power is calculated based on the detection result, so as to determine the power supply state of the first power line, wherein the sensing module includes a power sensing unit and an operation module, the power sensing The measuring unit is used to measure a voltage value and a current value on the first power line; the operation module is electrically connected with the power sensing unit and the control switch respectively, and is used for receiving the detected data from the power sensing unit The voltage value and the current value are calculated, and a power value is calculated. When the value of the power value is greater than the threshold value, the operation module outputs a turn-on message contained in the control signal to the control switch to control the control switch. The second power line is in the on state; when the power value is less than or equal to the threshold, the computing module outputs a disconnection message included in the control signal to the control switch to control the second power line in the off state state.

In one embodiment, the power supply state is determined by sensing whether there is a magnetic field on the first power line, wherein the sensing module has a magnetic force sensing unit, when the magnetic force sensing unit is on the first power line When a magnetic field action is sensed, the control signal is made to include a message that controls the second power line to be in the conductive state; when the magnetic force sensing unit does not sense the magnetic field action on the first power line , so that the control signal includes a message for controlling the second power line to be in the disconnected state.

In one embodiment, in order to ensure power supply quality, the present invention further includes a voltage regulator module, which is arranged on the first power line and is electrically connected to the sensing module to provide stable power to the sensing device. The module works.

In one embodiment, in order to avoid accidents caused by excessive load, the present invention further includes a first overcurrent protection module and a second overcurrent protection module, which are respectively disposed on the first power line and the second overcurrent protection module. On the two power lines, when the current in the first power line exceeds a rated current value, the first power line is temporarily disconnected, and because the first power line is disconnected, the sensing module will not send an activation signal to the Control the switch to disconnect the second power line to achieve the purpose of the first overcurrent protector to protect the first power line from overload protection, and control the second power line to open circuit at the same time, so that the output of the linkage device is completely cut off; it can also be used with the second power line. The overcurrent protection module temporarily disconnects the second power line when the current in the second power line exceeds a rated current value, so as to achieve the purpose of overload protection of the second power line.

In one embodiment, the control switch is an AC switch, such as SCR, TRIAC, relay, solid state relay, dual output relay, self-holding relay or other relays capable of controlling AC power.

First, as shown in FIGS. 1 to 2 , the electric shock-proof power supply linkage device A provided in the first embodiment of the present invention mainly includes a casing 10 , a first power cord 20 , and a second power supply Line 30 , a sensing module 40 and a control switch 50 .

The casing 10 is a basis for other components to be assembled or assembled. In this example, the casing 10 has a body 11 and an inner space 12 surrounded by the wall of the body 11 , and the body 11 At least two sockets 13 are fixed on the top, and parts of the sockets 13 are submerged in the inner space 12 .

An input end 21, 31 (such as a plug) of the first power cord 20 and the second power cord 30 are respectively electrically connected to a different external power socket (such as a household power socket), and the first power cord 20 The second power cord 30 runs through the body 11 of the casing 10 , and makes the first power cord 20 and an output end 23 and 32 of the second power cord 30 electrically connect to the two sockets 13 respectively, The two sockets 13 can respectively provide power to the electrical products plugged thereon. The first power line 20 and the second power line 30 are not electrically connected to each other, that is, they do not transmit power to each other. Therefore, the first power line 20 or the second power line 30 are independent and independent of each other. To safely transmit the current, the current provided by the two sockets 13 can be equal to or smaller than the initial current provided by the external power supply, respectively. For example, the rated current provided by each of the external power sources is 15 amps, and the first power cord 20 and the second power cord 30 are independently configured so that the two sockets 13 can respectively provide a current of 15 amps. To achieve the purpose of separate power supply.

Furthermore, the first power line 20 and the second power line 30 are respectively provided with a live wire (Live Wire) L1, L2 and a neutral (Neutral Conductor) N1, N2, as shown in FIG. 2, and these A voltage stabilizing module and/or a current protection module can be selectively provided on the live wires L1 and L2 of the power line or the neutral wires N1 and N2 as required, wherein the current protection module can avoid the power supply The occurrence of line overload means that when the current in the power lines exceeds a rated current value, their paths can be temporarily cut off, and the voltage stabilization module can stabilize the power output by the power lines. In this example, a voltage regulator module 22 is disposed on the neutral line N1 of the first power line 20 and is electrically connected to the sensing module 40 to provide stable power to the sensing module 40 to operate.

The sensing module 40 has a power sensing unit 41 and an arithmetic module 42 . The power sensing unit 41 is electrically connected to the first power line 20 for measuring the power on the first power line 20 A voltage value and/or a current value are generated, and a control signal is generated. In this example, the power sensing unit 41 is disposed on the neutral line N1 of the first power line 20 and is electrically connected to the voltage regulator module 22 . In other embodiments, it can also be reconfigured on the live wire L1 of the first power line 20 .

The power sensing unit 41 can be, but is not limited to, a current transformer (CT), a hall current sensor (Hall sensor) or a voltage sensor (voltage sensor) for sensing the magnitude of current or voltage.

The operation module 42 is electrically connected to the voltage regulator module 22 , the power sensing unit 41 and the control switch 50 respectively, and is used for receiving the data sensed by the power sensing unit 41 , and transmitting the data to the power sensing unit 41 after calculation. Control switch 50 .

Furthermore, the voltage-stabilizing module 22 includes an AC voltage-stabilizing circuit and a rectifier circuit electrically connected to the AC voltage-stabilizing circuit, wherein the AC voltage-stabilizing circuit receives the AC current flowing in the first power line 20 . (AC) to control the voltage of the alternating current within a predetermined output voltage range, and then transfer the stabilized alternating current to the rectifier circuit, and convert the stabilized alternating current into direct current through the rectifier circuit (DC), and supply a stable voltage direct current to the computing module 42 , the power sensing unit 41 and the control switch 50 for the operation of these components. In this example, the voltage regulator module 22 converts the alternating current of 110V into direct current of 5V.

. In addition, the converted alternating current is not limited to 110V alternating current, and design changes can also be made according to needs to meet various voltage requirements.

The control switch 50 is disposed on the second power line 30 and is electrically connected with the sensing module 40 to receive the control signal sent by the sensing module 40 and control the first power supply according to the control signal. The two power lines 30 are in an on state or an off state. In this example, the control switch 50 also has an activation selection unit CN1, which provides a synchronous activation mode and a forced activation mode. Specifically, in the state of the activation selection unit CN1 in the synchronous activation mode, when the value of at least one of the voltage value and the current value sensed by the sensing module 40 is greater than a threshold value, the control is enabled The signal includes a message that controls the second power line 30 to be in the conductive state; when the voltage value and the current value sensed by the sensing module 40 are less than or equal to the threshold, the control signal is made to include The message that controls the second power line 30 to be in the disconnected state, at the same time, because the computing module 42 also has a delay closing unit CN2, which is electrically connected to the control switch 50, and can be transmitted after a predetermined time. The control switch 50 includes the information for controlling the second power cord 30 to be in the disconnected state, so as to achieve the purpose of power saving, noise reduction and intelligence. Wherein, the predetermined time can be arbitrarily set by the user, such as turning off after a countdown of 7 seconds, or turning off after a countdown of 30 seconds.

In addition, when the user switches the activation selection unit CN1 to the forced activation mode, regardless of whether the voltage value and the current value sensed by the sensing module 40 are greater than or equal to the threshold value, the second power cord is activated 30 is forced to be in the conductive state, so that the second power cord 30 can transmit power to the socket 13 for the operation of the electrical products connected to the socket 13 . Wherein, the electrical product may be, but not limited to, a dust collector, a work light, or a vacuum cleaner.

In this example, the control switch 50 is arranged on the neutral line N2 of the second power line 30 . In other embodiments, it can also be reconfigured on the live wire L2 of the second power line 30 . In addition, the preset value of this threshold is 0, and a slight error is allowed.

The control switch 50 can be, but is not limited to, a solid state relay (Solid State Relay), an electromagnetic relay, a silicon controlled rectifier (SCR), a triac (TRIAC) or other electronic components for controlling alternating current.

It can be seen from the above structure that the specific implementation of the electric shock prevention power supply linkage device A of the present invention is as follows. First, when the plugs of the first power cord 20 and the second power cord 30 are respectively inserted into two external power sockets , since the first power cord 20 and the second power cord 30 are not electrically connected to each other, a sufficient amount of current can be respectively provided to the electrical products plugged into the two sockets 13 When an electrical product connected to a power cord 20 operates, the sensing module 40 detects that there is current flowing on the first power cord 20, and thus notifies the control switch 50 to switch the second power cord 30 to the on state, The second power cord 30 can provide power to another electrical product so that it can operate synchronously. When the electrical load product connected to the first power cord 20 is not operating, since the sensing module 40 does not detect current flow on the first power cord 20, the control switch 50 is notified to the second power cord 20 again. The power cord 30 is switched to the disconnected state, so that the other electrical product connected to the second power cord 30 stops operating, thereby achieving the effect of synchronous shutdown, and vice versa, the effect of synchronous startup can be achieved.

In addition, when one of the first power cord 20 or the second power cord 30 is unplugged from the external power source, since the first power cord 20 and the second power cord 30 are configured independently of each other, except for the In addition to the normal power supply of the unplugged power cord, the unplugged power cord does not carry any current, even if the user touches the plug, no electric shock will occur.

In the second embodiment of the present invention, the main difference from the first embodiment is that the computing module 42 receives the voltage value and the current value detected by the power sensing unit 41 to calculate a power value, wherein, when the value of the power value is greater than the threshold value, the operation module 42 outputs a turn-on message included in the control signal to the control switch 50 to control the second power line 30 to be in the turn-on state; When the power value is less than or equal to the threshold, the computing module 42 outputs a disconnection message included in the control signal to the control switch 50 to control the second power line 30 to be in the disconnected state.

In the third embodiment of the present invention, the main difference from the first embodiment is that the sensing module 40 has a magnetic force sensing unit, when the magnetic force sensing unit senses the first power line 20 When a magnetic field acts, the control signal is made to include a message that controls the second power line 30 to be in the conducting state; when the magnetic force sensing unit does not sense the magnetic field acting on the first power line 20 , so that the control signal includes a message for controlling the second power line 30 to be in the disconnected state. The magnetic field effect may be, but not limited to, magnetic flux density, magnetic induction, magnetic flux, magnetic field strength, inductance, magnetic permeability, and the like.

The magnetic sensing unit can be, but is not limited to, a search-coil magnetometer (Search-coil magnetometer), an anisotropic magnetoresistance sensor (AMR), a giant magnetoresistance sensor (GMR) , Magnetic tunnel junction sensor (Magnetic tunnel junction sensor, MTJ), Extraordianry magnetoresistance effect sensor (Extraordianry magnetoresistance sensor), Giant magnetoimpedance magnetic sensor (Giant magnetoimpedance magnetic sensor, GMI), spin valve transistor ( Spin-valve transistor, Magnetodiode, Magnetotransistor, Fiber-optic magnetometers, Magnetoelectric sensor, MEMS based magnetometers Wait.

Accordingly, the above-mentioned feasible embodiments of this creation do not limit the scope of the patent of this creation, and all equivalent structural changes made by using the description and drawings of this creation are equally included in the scope of this creation. Inside, and to be stated.

A: Power linkage device 10: Shell 11: Body 12: Internal space 13: Socket 20: The first power cord 21: Input terminal 22: The first voltage regulator module 23: output terminal 30: Second power cord 31: Input terminal 32: output terminal 40: Sensing module 41: Power Sensing Unit 42: Operation module 50: Control switch L1, L2: FireWire N1, N2: neutral wire CN1: start selection unit CN2: Delay shutdown unit

FIG. 1 is a three-dimensional schematic diagram of a power supply linkage device for preventing electric shock in a first embodiment of the present invention. FIG. 2 is a circuit diagram of a power supply linkage device for preventing electric shock in a first embodiment of the invention.

20: The first power cord

21: Input terminal

22: The first voltage regulator module

23: output terminal

30: Second power cord

32: output terminal

40: Sensing module

41: Power Sensing Unit

42: Operation module

50: Control switch

L1, L2: FireWire

N1, N2: neutral wire

CN1: start selection unit

CN2: Delay shutdown unit

Claims (8)

An electric shock-proof power supply linkage device, comprising: A first power line and a second power line are respectively electrically connected to different external power sources, and the first power line and the second power line are independently configured from each other, so that the output of the first power line The current is the initial current provided by the external power supply to which it is connected, and the output current of the second power line is the initial current provided by the external power supply to which it is connected; a sensing module electrically connected to the first power line for detecting whether there is power transmission and/or electromagnetic effect on the first power line, and generating a control signal; and A control switch is arranged on the second power line and is electrically connected with the sensing module, so as to receive the control signal sent by the sensing module, and control the second power line to be in a state according to the control signal. an on state or an off state. The power supply linkage device for preventing electric shock according to claim 1, wherein the sensing module has a power sensing unit for measuring a voltage value and/or a current value on the first power line, when the voltage When the value of at least one of the voltage value and the current value is greater than a threshold value, the control signal is made to include a message that controls the second power line to be in the conductive state; when the voltage value and the current value are both less than or equal to the threshold value When , the control signal is made to include a message for controlling the second power line to be in the disconnected state. The power supply linkage device for preventing electric shock according to claim 1, wherein the sensing module comprises: a power sensing unit for measuring a voltage value and a current value on the first power line; and A computing module is electrically connected to the power sensing unit and the control switch respectively, and is used for receiving the voltage value and the current value detected by the power sensing unit, and calculating a power value. When the value of the power value is greater than the threshold value, the operation module outputs a turn-on message included in the control signal to the control switch to control the second power line to be in the on state; when the power value is less than or equal to the threshold value At the time, the operation module outputs the control signal including the disconnection message to the control switch, so as to control the second power line to be in the disconnected state. The power supply linkage device for preventing electric shock according to claim 1, wherein the sensing module has a magnetic force sensing unit, and when the magnetic force sensing unit senses a magnetic field on the first power line, the The control signal includes a message that controls the second power line to be in the conductive state; when the magnetic force sensing unit does not sense the effect of the magnetic field on the first power line, the control signal includes a control signal that controls the A message that the second power line is in the disconnected state. The power supply linkage device for preventing electric shock as claimed in claim 1, 2, 3 or 4, further comprising a voltage regulator module, which is arranged on the first power line and is electrically connected with the sensing module to provide Stable power supplies the sensing module to operate. The power supply linkage device for preventing electric shock as claimed in claim 1, 2, 3 or 4, further comprising a first overcurrent protection module, which is connected to the first power supply line. When the current in the first power supply line exceeds At a rated current value, the first power line is temporarily disconnected. The power supply linkage device for preventing electric shock according to claim 1, 2, 3 or 4, further comprising a second overcurrent protection module, which is connected to the second power supply line. When the current in the second power supply line exceeds At a rated current value, the second power line is temporarily disconnected. The power supply linkage device for preventing electric shock according to claim 1, 2, 3 or 4, wherein the control switch is a relay, a solid state relay (Solid State Relay), an electromagnetic relay, a silicon controlled rectifier (Silicon Controlled Rectifier, SCR) or Bidirectional Silicon Controlled Rectifier (TRIAC).

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