CN216197763U

CN216197763U - Telescopic door with electric leakage protection function

Info

Publication number: CN216197763U
Application number: CN202122305127.2U
Authority: CN
Inventors: 金国建; 方鑫; 周瑞怡
Original assignee: Guangdong Jinhongxing Intelligent Technology Co ltd
Current assignee: Guangdong Jinhongxing Intelligent Technology Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-04-05
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a telescopic door with a leakage protection function, wherein a door head is provided with a driving mechanism, the front end of a telescopic door body is connected with the door head, and the rear end of the telescopic door body is connected with a door tail; the primary coil of an isolation transformer T0 of the safety electricity utilization protection device is electrically connected with a mains supply, the secondary coil of an isolation transformer T0 is electrically connected with the input end of a switch power supply, and the output end of the switch power supply is electrically connected with the power supply input end of an electricity utilization detection module; the signal input end of the electricity utilization detection module is electrically connected with the secondary coil of the isolation transformer T0 after being connected in parallel with the input end of the main switch, the output end of the main switch is electrically connected with the wiring end of the driving mechanism, the signal output end of the electricity utilization detection module is electrically connected with the control end of the main switch, and the electricity utilization detection module is used for detecting whether the circuit of the telescopic door is abnormal or not and disconnecting the main switch when the circuit is abnormal. The utility model solves the problem that when the circuit leaks electricity, a person touches the telescopic door and is easy to get an electric shock.

Description

Telescopic door with electric leakage protection function

Technical Field

The utility model relates to the technical field of telescopic doors, in particular to a telescopic door with a leakage protection function.

Background

At present, the electric retractable door is favored by people because of its flexibility, easy operation and changeable shape, and is widely applied to places such as offices, schools, enterprises, stadiums and the like, and can effectively manage vehicles and people who enter and exit. However, when the existing electric retractable door is subjected to line leakage, the door body is easily electrified, and people can be in danger of electric shock if touching the door body when entering or exiting, so that accidents are caused.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks, an object of the present invention is to provide a retractable door with an electric leakage protection function, which solves the problem that a person is easy to get an electric shock when touching the retractable door when the circuit leaks electricity, by using a safety electric protection device.

In order to achieve the purpose, the utility model adopts the following technical scheme: a telescopic door with a leakage protection function comprises a door head, a door tail, a telescopic door body and a safety power consumption protection device, wherein the door head is provided with a driving mechanism, the front end of the telescopic door body is connected with the door head, the rear end of the telescopic door body is connected with the door tail, when the door head drives the telescopic door body to move in a direction away from the door tail, the telescopic door body extends, and when the door head drives the telescopic door body to move in a direction close to the door tail, the telescopic door body contracts;

the safety power utilization protection device comprises an isolation transformer T0, a switching power supply, a main switch and a power utilization detection module;

the primary coil of the isolation transformer T0 is electrically connected with a mains supply, the secondary coil of the isolation transformer T0 is electrically connected with the input end of the switch power supply, and the output end of the switch power supply is electrically connected with the power supply input end of the electricity utilization detection module; the signal input end of the electricity utilization detection module and the input end of the main switch are connected in parallel and then electrically connected with the secondary coil of the isolation transformer T0, the output end of the main switch is electrically connected with the wiring end of the driving mechanism, the signal output end of the electricity utilization detection module is electrically connected with the control end of the main switch, and the electricity utilization detection module is used for detecting whether the circuit of the retractable door is abnormal or not and disconnecting the main switch when the circuit is abnormal.

It should be noted that the electricity consumption detection module includes an electric leakage detection unit and a central processing unit, a signal input end of the electric leakage detection unit is electrically connected to the secondary coil of the isolation transformer T0, a signal output end of the electric leakage detection unit is electrically connected to a signal input end of the central processing unit, and a signal output end of the central processing unit is electrically connected to a control end of the main switch.

Optionally, a signal input end of the leakage detection unit is divided into a first input end LI and a second input end NI, the leakage detection unit includes a single-phase detection circuit, and the single-phase detection circuit includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a non-polar capacitor C1, a polar capacitor C2, a non-polar capacitor C3, a diac D1, a diode D2, a diode D3, a triode Q1, and a linear optocoupler U1;

the first input end LI is electrically connected to one end of the resistor R1, the other end of the resistor R1 is electrically connected to one end of the diac D1, one end of the nonpolar capacitor C1, the positive electrode of the polar capacitor C2 and one end of the resistor R2, respectively, the other end of the resistor R2 is electrically connected to the positive electrode of the light emitting diode of the linear optocoupler U1, the other end of the diac D1, the other end of the nonpolar capacitor C1 and the negative electrode of the polar capacitor C2 are all electrically connected to the negative electrode of the light emitting diode of the linear optocoupler U1, the collector E1 of the phototransistor of the linear optocoupler U1 is electrically connected to a signal input end of the central processor, and the emitter F1 of the phototransistor of the linear optocoupler U1 is connected to GND;

the second input terminal NI is electrically connected to a negative electrode of the diode D3, an anode of the diode D3 is electrically connected to one end of the nonpolar capacitor C3, one end of the resistor R3, and an emitter of the transistor Q1, respectively, the other end of the nonpolar capacitor C3, the other end of the resistor R3, and a base of the transistor Q1 are electrically connected to one end of the resistor R4, the other end of the resistor R4 is electrically connected to a negative electrode of the diode D2, and an anode of the diode D2 is electrically connected to the ground PE; and the collector electrode of the triode Q1 is electrically connected with the negative electrode of the light emitting diode of the linear optocoupler U1.

Specifically, the leakage detection unit further comprises a zero line detection circuit, wherein the zero line detection circuit comprises a resistor R5, a resistor R6, a resistor R7, a resistor R8, a nonpolar capacitor C4, a polar capacitor C5, a nonpolar capacitor C6, a diode D4, a diac D5, a diode D6, a triode Q2 and a linear optocoupler U2;

the second input end NI is electrically connected to one end of the resistor R6, the other end of the resistor R6 is electrically connected to one end of the diac D5, one end of the nonpolar capacitor C4, the anode of the polar capacitor C5 and one end of the resistor R7, the other end of the resistor R7 is electrically connected to the anode of the led of the linear optocoupler U2, the other end of the diac D5, the other end of the nonpolar capacitor C4 and the other end of the polar capacitor C5 are electrically connected to the cathode of the led of the linear optocoupler U2, the collector E2 of the phototransistor of the linear optocoupler U2 is electrically connected to a signal input end of the central processor, and the emission set F2 of the phototransistor of the linear optocoupler U2 is grounded;

the first input end LI is electrically connected to a negative electrode of the diode D6, an anode of the diode D6 is electrically connected to one end of the nonpolar capacitor C6, one end of the resistor R8, and an emitter of the transistor Q2, respectively, the other end of the nonpolar capacitor C6, the other end of the resistor R8, and a base of the transistor Q2 are electrically connected to one end of the resistor R5, the other end of the resistor R5 is electrically connected to a negative electrode of the diode D4, and an anode of the diode D4 is electrically connected to the ground PE; and the collector electrode of the triode Q2 is electrically connected with the negative electrode of the light emitting diode of the linear optocoupler U2.

Specifically, the telescopic door body comprises a plurality of cross connecting rods, a plurality of main frames and a plurality of sub frames, wherein the main frames and the sub frames are alternately distributed, and the adjacent main frames and the adjacent sub frames are connected with the cross connecting rods.

Preferably, the door head is provided with a display, the display is in communication connection with the power consumption detection module, and the display is used for displaying the electric leakage reminding information of the power consumption detection module.

It is worth to say that, the flexible door still is equipped with the siren, the siren with power consumption detection module electricity is connected, power consumption detection module is when controlling the disconnection of master switch, sends out the police dispatch newspaper through the siren.

One of the above technical solutions has the following beneficial effects:

1. among the flexible door with earth leakage protection function, when the inlet wire of flexible door or its inside drive circuit appear short circuit or electric leakage, the electricity consumption detection module can detect out the unusual of circuit, control the master switch disconnection to avoid further stretching of trouble, also can avoid the gate head, the gate tail and the flexible door body of flexible door are electrified, avoid the people around the flexible door to touch flexible door and electrocute, avoid the occurence of failure. After the trouble is relieved, it is unusual that the circuit is detected out to the power consumption detection module, thereby control master switch closes, the actuating mechanism of flexible door just can be electrified and normal operation, thereby passes through the door head drives the motion of the flexible door body, works as the door head drives the flexible door body is toward keeping away from during the direction motion of door tail, the flexible door body extends, works as the door head drives the flexible door body is toward being close to during the direction motion of door tail, the flexible door body shrink realizes opening and shutting of flexible door. The safety electricity utilization protection device can effectively identify the abnormal problem of any line in the power grid, the judgment process is rapid, the power supply line can be cut off rapidly, and no time difference exists. The safety near the retractable door can be effectively ensured.

2. Set up isolation transformer T0 enables the drive circuit and the electric wire netting of flexible door and keep apart completely, makes safety power protection device's ground wire and the ground wire of commercial power keep apart, can not produce the return circuit with the ground when human touching leakage equipment, can not produce the risk of electrocuteeing.

Drawings

Fig. 1 is a schematic structural view of a retractable door according to another embodiment of the present invention;

FIG. 2 is a schematic view of the retractable door according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a safety electric protection device according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a single phase detection circuit according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the structure of the neutral detection circuit of one embodiment of the present invention;

wherein: 1, a door head; 11 a drive mechanism; 2, a door tail; 3, a telescopic door body; 35 cross-links; 36 a main frame; 37 a subframe; 4 safety electricity utilization protection device; 41 switching power supply; 42 a master switch; 43 a central processing unit; 44 a power supply unit; 45 single-phase detection circuit; 46 zero line detection circuit; a resistor R1; a resistor R2; a resistor R3; a resistor R4; a resistor R5; a resistor R6; a resistor R7; a resistor R8; a non-polar capacitor C1; a polar capacitor C2; a non-polar capacitor C3; a non-polar capacitor C4; a polar capacitor C5; a non-polar capacitor C6; a diac D1; a diode D2; a diode D3; a diode D4; a diac D5; a diode D6; a transistor Q1; a transistor Q2; a linear optocoupler U1; and a linear optical coupler U2.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following describes, with reference to fig. 1 to 5, a retractable door with a leakage protection function according to an embodiment of the present invention, including a door head 1, a door tail 2, a retractable door body 3, and a safety electric protection device 4, where the door head 1 is provided with a driving mechanism 11, a front end of the retractable door body 3 is connected to the door head 1, a rear end of the retractable door body 3 is connected to the door tail 2, when the door head 1 drives the retractable door body 3 to move in a direction away from the door tail 2, the retractable door body 3 extends, and when the door head 1 drives the retractable door body 3 to move in a direction close to the door tail 2, the retractable door body 3 contracts; specifically, as shown in fig. 1 and 2, the front is far from the door tail 2, and the rear is close to the door tail 2. The driving mechanism 11 is a motor. The safety electricity utilization protection device 4 comprises an isolation transformer T0, a switching power supply 41, a main switch 42 and an electricity utilization detection module; specifically, the turn ratio of the primary coil and the secondary coil of the isolation transformer T0 is 1: 1, isolation transformer T0 only plays the isolation, avoids the user directly to touch the commercial power, and does not play the effect of step-up or step-down. A primary coil of the isolation transformer T0 is electrically connected to a mains supply, a secondary coil of the isolation transformer T0 is electrically connected to an input terminal of the switching power supply 41, and an output terminal of the switching power supply 41 is electrically connected to a power input terminal of the power consumption detection module; specifically, the switching power supply 41 converts the alternating current of the secondary coil of the isolation transformer T0 into a 24V direct current, the output end of the switching power supply 41 is electrically connected to the power supply unit 44 in the electricity usage detection module, and the power supply unit 44 converts the 24V direct current output by the switching power supply 41 into a 5V direct current to supply power to other units of the electricity usage detection module. The signal input end of the electricity utilization detection module and the input end of the main switch 42 are connected in parallel and then electrically connected with the secondary coil of the isolation transformer T0, the output end of the main switch 42 is electrically connected with the wiring end of the driving mechanism 11, the signal output end of the electricity utilization detection module is electrically connected with the control end of the main switch 42, and the electricity utilization detection module is used for detecting whether the circuit of the telescopic door is abnormal or not and disconnecting the main switch 42 when the circuit is abnormal. Specifically, the master switch 42 is, but not limited to, an ac contactor or a magnetically controlled knife switch. For example, when the main switch 42 is an ac contactor, the control terminal is a control connection terminal for controlling the switching-on or switching-off of the ac contactor, and the ac contactor is an existing product, and when different signals are input to the control terminal, the switching-on or switching-off of the ac contactor can be realized. For example, when the main switch 42 is a magnetically controlled knife switch, the control terminal is an input terminal of a driving circuit of the magnetically controlled knife switch. And the iron core of the isolation transformer T0 is connected with the ground wire of the commercial power. During normal use, the electricity detection module detects that the circuit is not unusual, controls master switch 42 closes, actuating mechanism 11 and commercial power intercommunication, actuating mechanism 11 functions, drives the action of door head 1, door head 1 drives the flexible door body 3 functions.

Among the flexible door with earth leakage protection function, when short circuit or electric leakage appear in the inlet wire of flexible door or its inside drive circuit, the electricity consumption detection module can detect out the unusual of circuit, control master switch 42 disconnection to avoid further stretching of trouble, also can avoid the door head 1, the door tail 2 and the flexible door body 3 of flexible door are electrified, avoid the people around the flexible door to touch flexible door and electrocute, avoid the occurence of failure. After the trouble is relieved, it is unusual that the circuit is detected out to the power consumption detection module, thereby control master switch 42 closes, the actuating mechanism 11 of flexible door just can be electrified and normal operation, thereby pass through door head 1 drives the motion of the flexible door body 3, works as door head 1 drives the flexible door body 3 toward keeping away from during the direction motion of door tail 2, the flexible door body 3 extends, works as door head 1 drives the flexible door body 3 toward being close to during the direction motion of door tail 2, the flexible door body 3 contracts, realizes opening and shutting of flexible door. The safety electricity utilization protection device 4 can effectively identify the abnormal problem of any line in the power grid, the judgment process is rapid, the power supply line can be cut off rapidly, and no time difference exists. The safety near the retractable door can be effectively ensured. Set up isolation transformer T0 enables the drive circuit and the electric wire netting of flexible door and keep apart completely, makes safety power consumption protection device 4's ground wire and the ground wire of commercial power keep apart, can not produce the return circuit with the ground when human touching leakage equipment, can not produce the risk of electrocuteeing.

In some embodiments, the electricity consumption detecting module includes an electric leakage detecting unit and a central processing unit 43, a signal input end of the electric leakage detecting unit is electrically connected to the secondary winding of the isolation transformer T0, a signal output end of the electric leakage detecting unit is electrically connected to a signal input end of the central processing unit 43, and a signal output end of the central processing unit 43 is electrically connected to the control end of the main switch 42. Specifically, the leakage detecting unit is used for detecting whether the line leaks electricity; the central processing unit 43 is configured to receive a determination result of the leakage detection unit, so as to control the opening and closing of the main switch 42, and the central processing unit 43 is preferably an ARM, and has a model number of STM32F 103. The electricity detection module may set a threshold of the leakage current in the leakage detection unit, and when the safety electricity detection module detects that the leakage current exceeds the set threshold, the central processing unit 43 controls the main switch 42 to cut off the power supply circuit.

It should be noted that the signal input terminal of the leakage detecting unit is divided into a first input terminal LI and a second input terminal NI, the leakage detecting unit includes a single-phase detecting circuit 45, and the single-phase detecting circuit 45 includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a non-polar capacitor C1, a polar capacitor C2, a non-polar capacitor C3, a diac D1, a diode D2, a diode D3, a triode Q1, and a linear optocoupler U1; the first input end LI is electrically connected to one end of the resistor R1, the other end of the resistor R1 is electrically connected to one end of the diac D1, one end of the nonpolar capacitor C1, the positive electrode of the polar capacitor C2 and one end of the resistor R2, respectively, the other end of the resistor R2 is electrically connected to the positive electrode of the light emitting diode of the linear optocoupler U1, the other end of the diac D1, the other end of the nonpolar capacitor C1 and the negative electrode of the polar capacitor C2 are all electrically connected to the negative electrode of the light emitting diode of the linear optocoupler U1, the collector E1 of the phototransistor of the linear optocoupler U1 is electrically connected to a signal input end of the central processor 43, and the emitter F1 of the phototransistor of the linear optocoupler U1 is connected to the ground GND; the second input terminal NI is electrically connected to a negative electrode of the diode D3, an anode of the diode D3 is electrically connected to one end of the nonpolar capacitor C3, one end of the resistor R3, and an emitter of the transistor Q1, respectively, the other end of the nonpolar capacitor C3, the other end of the resistor R3, and a base of the transistor Q1 are electrically connected to one end of the resistor R4, the other end of the resistor R4 is electrically connected to a negative electrode of the diode D2, and an anode of the diode D2 is electrically connected to the ground PE; and the collector electrode of the triode Q1 is electrically connected with the negative electrode of the light emitting diode of the linear optocoupler U1. Specifically, when the power supply system is a three-phase power supply system, the isolation transformer T0 is a three-phase transformer, the leakage detecting unit includes three single-phase detecting circuits 45 and three first input terminals LI, each single-phase detecting circuit 45 corresponds to one first input terminal LI, each first input terminal LI is electrically connected to one of the phases of the three-phase power supply system of the secondary winding of the isolation transformer T0, and the second input terminal NI is electrically connected to the zero line of the secondary winding of the isolation transformer T0. When the power supply system is a common live wire and zero wire power supply system, the leakage detection unit includes a single-phase detection circuit 45, the first input end LI is electrically connected to the live wire of the secondary coil of the isolation transformer T0, and the second input end NI is electrically connected to the zero wire of the secondary coil of the isolation transformer T0. It should be noted that the diac D1 is a diode that can be conducted in both directions, and can be conducted when the voltage applied to the diac D1 is greater than its trigger voltage. The ground wire PE is the ground wire of the safety electricity protection device 4.

The single-phase detection circuit 45 determines whether the leakage current of one phase in the three-phase power supply system is greater than a safe current threshold or whether the leakage current of the live wire and zero wire power supply system is greater than a safe current threshold, and if so, the central processing unit 43 controls the main switch 42 to be switched off to switch off the commercial power and the circuit of the driving mechanism 11. As shown in fig. 3 and 4, in this embodiment, the power supply system is a normal live wire and zero line power supply system, when a leakage problem occurs in a live wire, a current of the live wire flows to a ground wire PE through a leakage point, a current driving transistor Q1 of the ground wire PE is turned on, a loop is formed between a first input end LI and a second input end NI electrically connected to a secondary coil of the isolation transformer T0, a linear optocoupler U1 is driven to operate, a collector E1 of a phototransistor of the linear optocoupler U1 sends a first leakage current to a central processing unit 43, the central processing unit 43 outputs a short-circuit protection control signal to the main switch 42 after receiving the first leakage current exceeding a preset safe current threshold, and the main switch 42 is turned off.

Optionally, the leakage detection unit further includes a zero line detection circuit 46, where the zero line detection circuit 46 includes a resistor R5, a resistor R6, a resistor R7, a resistor R8, a non-polar capacitor C4, a polar capacitor C5, a non-polar capacitor C6, a diode D4, a diac D5, a diode D6, a triode Q2, and a linear optocoupler U2; the second input end NI is electrically connected to one end of the resistor R6, the other end of the resistor R6 is electrically connected to one end of the diac D5, one end of the nonpolar capacitor C4, the anode of the polar capacitor C5 and one end of the resistor R7, the other end of the resistor R7 is electrically connected to the anode of the led of the optocoupler U2, the other end of the diac D5, the other end of the nonpolar capacitor C4 and the other end of the polar capacitor C5 are electrically connected to the cathode of the led of the optocoupler U2, the collector E2 of the phototransistor of the optocoupler U2 is electrically connected to the signal input end of the central processor 43, and the emission set F2 GND of the phototransistor of the optocoupler U2 is connected to ground; the first input end LI is electrically connected to a negative electrode of the diode D6, an anode of the diode D6 is electrically connected to one end of the nonpolar capacitor C6, one end of the resistor R8, and an emitter of the transistor Q2, respectively, the other end of the nonpolar capacitor C6, the other end of the resistor R8, and a base of the transistor Q2 are electrically connected to one end of the resistor R5, the other end of the resistor R5 is electrically connected to a negative electrode of the diode D4, and an anode of the diode D4 is electrically connected to the ground PE; and the collector electrode of the triode Q2 is electrically connected with the negative electrode of the light emitting diode of the linear optocoupler U2. Specifically, the diac D5 is a diode that can conduct in both directions, and can conduct when the voltage applied to the diac D5 is greater than its trigger voltage. The drive current of the triode Q1 and the drive current of the triode Q2 are 0.05mA-15.5 mA.

The zero line detection circuit 46 determines whether the leakage current of the zero line of the three-phase power supply system or the live line zero line power supply system is greater than a safe current threshold, and if so, the central processing unit 43 controls the main switch 42 to be switched off, so as to switch off the commercial power and the circuit of the driving mechanism 11. As shown in fig. 3 and 5, in this embodiment, the power supply system is a normal live wire and zero line power supply system, when a leakage problem occurs in the zero line, a current of the zero line flows to a ground wire PE through a leakage position, a current driving transistor Q2 of the ground wire PE is turned on, a loop is formed between a first input end LI and a second input end NI electrically connected to a secondary coil of the isolation transformer T0, a linear optocoupler U2 is driven to operate, a collector E2 of a phototransistor of the linear optocoupler U2 sends a second leakage current to the central processing unit 43, the central processing unit 43 outputs a short-circuit protection control signal to the main switch 42 after receiving the second leakage current exceeding a preset safety current threshold, and the main switch 42 is turned off.

It should be noted that the retractable door body 3 includes a plurality of cross connecting rods 35, a plurality of main frames 36 and a plurality of sub frames 37, the main frames 36 and the sub frames 37 are alternately distributed, and the cross connecting rods 35 are connected to the adjacent main frames 36 and sub frames 37; the main frame 36 and the subframe 37 are both provided with the safety anti-pinch device 5. As shown in fig. 1 and 2, when the door is opened, the cross link 35 is retracted, the main frame 3621 drives the sub-frame 3722 to move in a direction close to the door tail 2 through the cross link 3523, and when the door is closed, the cross link 3523 is extended, and the main frame 3621 drives the sub-frame 37 to move in a direction away from the door tail 2 through the cross link 3523.

Optionally, door head 1 is equipped with the display, the display with the electricity detection module communication is connected, the display is used for showing electricity detection module's electric leakage warning information. In the live wire and zero line power supply system of this embodiment, in the electric leakage alarm current is adjusted to the electricity analysis module, can be in according to every different operational environment the electricity analysis module sets up electric leakage alarm current, works as the electricity analysis module detects that electric leakage current exceeds the setting value then shows in the display, reminds people around to pay attention to safety to when electric leakage current exceeds the twice of setting value or detect that it is live wire electric leakage then control master switch 42 and cut off power supply circuit.

Specifically, the retractable door is further provided with an alarm, the alarm is electrically connected with the electricity utilization detection module, and the electricity utilization detection module controls the disconnection of the main switch 42 and simultaneously gives an alarm through the alarm. When the leakage current exceeds twice of the set value or the live wire leakage is detected, the electric leakage accident is serious, the alarm is used for alarming people around, the electric door is dangerous, people around are reminded not to approach the electric door, and the safety of people is guaranteed.

Other configurations and operations of a retractable door with an earth leakage protection function according to an embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a flexible door with earth leakage protection function, includes door head, door tail, the flexible door body and safe power consumption protection device, its characterized in that: the door head is provided with a driving mechanism, the front end of the telescopic door body is connected with the door head, the rear end of the telescopic door body is connected with the door tail, when the door head drives the telescopic door body to move in a direction far away from the door tail, the telescopic door body extends, and when the door head drives the telescopic door body to move in a direction close to the door tail, the telescopic door body contracts;

2. A retractable door with earth leakage protection function as claimed in claim 1, wherein: the electricity utilization detection module comprises an electric leakage detection unit and a central processing unit, wherein a signal input end of the electric leakage detection unit is electrically connected with a secondary coil of the isolation transformer T0, a signal output end of the electric leakage detection unit is electrically connected with a signal input end of the central processing unit, and a signal output end of the central processing unit is electrically connected with a control end of the main switch.

3. A retractable door with earth leakage protection function as claimed in claim 2, wherein: the signal input end of the leakage detection unit is divided into a first input end LI and a second input end NI, the leakage detection unit comprises a single-phase detection circuit, and the single-phase detection circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a non-polar capacitor C1, a polar capacitor C2, a non-polar capacitor C3, a bidirectional trigger diode D1, a diode D2, a diode D3, a triode Q1 and a linear optocoupler U1;

4. A retractable door with earth leakage protection function as claimed in claim 3, wherein: the leakage detection unit further comprises a zero line detection circuit, and the zero line detection circuit comprises a resistor R5, a resistor R6, a resistor R7, a resistor R8, a nonpolar capacitor C4, a polar capacitor C5, a nonpolar capacitor C6, a diode D4, a bidirectional trigger diode D5, a diode D6, a triode Q2 and a linear optocoupler U2;

5. A retractable door with earth leakage protection function as claimed in claim 1, wherein: the telescopic door body comprises a plurality of cross connecting rods, a plurality of main frames and a plurality of subframes, the main frames and the subframes are alternately distributed, and the adjacent main frames and the subframes are connected with the cross connecting rods.

6. A retractable door with earth leakage protection function as claimed in claim 1, wherein: the door head is provided with a display, the display is in communication connection with the power consumption detection module, and the display is used for displaying electric leakage reminding information of the power consumption detection module.

7. A retractable door with earth leakage protection function as claimed in claim 1, wherein: the retractable door is further provided with an alarm, the alarm is electrically connected with the electricity utilization detection module, and the electricity utilization detection module controls the disconnection of the main switch and simultaneously sends out an alarm through the alarm.