阅读说明：本技术 插头、电源线、插座及插头的控制方法 (Plug, power line, socket and control method of plug ) 是由 郝宁 于 2020-11-26 设计创作，主要内容包括：本公开涉及一种插头、电源线、插座及插头的控制方法,插头用于与插座配合,插头包括：插头本体,包括绝缘壳体,绝缘壳体包括面向插座的接触面,接触面上凸出设置有多个插脚,插脚用于与插座电连接,第一检测器,设置于插头本体,用于检测插头插入插座的深度,第二检测器,设置于插头本体,用于检测插头本体的温度,切断装置,与其中一个插脚串联,控制器,与第一检测器、第二检测器和切断装置分别信号连接,以在深度未达到预设的深度阈值时,和/或,在温度超过预设的温度阈值时,控制切断装置使得插头的内部断电。上述的插头能够预防因插座和插头接触不良或者处于半插入等位置异常状态,在温度过高时,通过切断装置及时控制插头的内部断电。(The present disclosure relates to a plug, a power line, a socket and a control method of the plug, the plug is used for matching with the socket, the plug includes: the plug body, including insulating housing, insulating housing includes the contact surface towards the socket, the protrusion is provided with a plurality of pins on the contact surface, the pin is used for being connected with the socket electricity, first detector, set up in the plug body, a degree of depth for detecting the plug inserts the socket, the second detector, set up in the plug body, a temperature for detecting the plug body, cutting device, establish ties with one of them pin, a controller, with first detector, second detector and cutting device difference signal connection, in order when the degree of depth does not reach predetermined degree of depth threshold value, and/or, when the temperature exceedes predetermined temperature threshold value, control cutting device makes the inside outage of plug. The plug can prevent the abnormal state of the position due to poor contact or half insertion and the like of the socket and the plug, and the internal power-off of the plug is controlled in time through the cut-off device when the temperature is overhigh.)

1. A plug for mating with a receptacle, comprising:

the plug comprises a plug body (10) and a plug body, wherein the plug body comprises an insulating shell (11), the insulating shell (11) comprises a contact surface (111) facing the socket, a plurality of pins (12) are arranged on the contact surface (111) in a protruding mode, and the pins (12) are used for being electrically connected with the socket;

a first detector (20) provided to the plug body (10) for detecting a depth of insertion of the plug (100) into the socket;

a second detector (30) provided to the plug body (10) for detecting a temperature of the plug body (10);

-a cut-off device (40) in series with one of said pins (12);

a controller (50) in signal connection with the first detector (20), the second detector (30) and the cut-off device (40), respectively, to control the cut-off device (40) to de-energize the interior of the plug (100) when the depth does not reach a preset depth threshold and/or when the temperature exceeds a preset temperature threshold.

2. Plug according to claim 1, characterised in that the first detector (20) is a proximity sensor for detecting the distance between the contact surface (111) and the surface of the socket on which the pin hole (12) is provided.

3. The plug of claim 2, wherein the proximity sensor comprises an infrared emitting tube disposed in the insulating housing (11), the contact surface (111) has a through hole (112), the infrared emitting tube corresponds to the through hole (112), and the pins (12) are disposed around the through hole (112).

4. The plug according to claim 1, wherein the second detector (30) comprises a heat conducting sheet (21) and a temperature sensitive device in signal connection with the controller (50), the temperature sensitive device being in contact with the heat conducting sheet (21) to detect the temperature of the heat conducting sheet (21), the heat conducting sheet (21) being disposed at the insulating housing (11).

5. The plug according to claim 4, characterized in that the contact face (111) comprises an insulating region (1111) and a heat diffusion region (1112) disposed around the insulating region (1111), the heat conducting sheet (21) covers the heat diffusion region (1112), and the plurality of pins (12) are disposed on the insulating region (1111) and are not in contact with the heat conducting sheet (21).

6. A power cord, characterized in that it comprises a cable and a plug (100) according to any one of claims 1 to 5, said plug (100) being connected to the end of said cable and being electrically connected thereto.

7. A receptacle for mating with a plug (100), comprising:

the insulating shell comprises a contact surface facing the plug (100), a plurality of pin holes used for being matched with the plug (100) are formed in the contact surface, and conductive pieces used for being electrically connected with a power supply line are arranged in the pin holes;

a first detector disposed in the insulating housing for detecting a depth of insertion of the plug (100) into the socket;

the second detector is arranged on the insulating shell and used for detecting the temperature of the socket;

a cut-off device for being disposed in series between the conductive member and the power supply line;

the controller, with first detector, the second detector with cutting device difference signal connection, with when the degree of depth does not reach predetermined degree of depth threshold value, and/or, when the temperature surpassed predetermined temperature threshold value, control cutting device cuts off electrically conductive piece with electric connection between the power supply line.

8. A method of controlling a plug, the method comprising:

detecting the depth of insertion of the pins (12) of the plug (100) into the socket;

detecting a temperature of the plug (100);

when the depth does not reach a preset depth threshold value and/or when the temperature exceeds a preset temperature threshold value, the electrical connection inside the plug (100) is cut off.

9. The method of claim 8, further comprising:

controlling the plug (100) to restore electrical connection internally when the depth reaches a preset depth threshold and the temperature does not exceed the preset temperature threshold.

10. The method of claim 8, wherein said detecting a depth of insertion of a pin of said plug (100) into a socket comprises:

the depth of insertion of the pins of the plug (100) into the socket is determined by detecting the distance between the surface of the plug (100) provided with the pins (12) and the surface of the socket provided with the pin holes.

Technical Field

The disclosure relates to the technical field of plug-in equipment, in particular to a plug, a power line, a socket and a control method of the plug.

Background

In the related art, when a plug and a socket of a plug-in device are used for a long time or a user uses the plug and the socket in an irregular way, a loose state, a non-firm state or a half-insertion state can occur. These conditions are due to aging of the metal dome mechanism of the device and poor user habits. When the problem of poor contact of the socket and the plug caused by looseness, unfitness and half insertion occurs, the poor contact can cause the connection resistance between the plug and the metal electrode of the socket to be increased, extremely high power consumption is generated between the electrodes, the power consumption cannot be released, the power consumption can be directly converted into heat consumption, and finally the electrodes or plastic structural parts around the electrodes are fused.

Disclosure of Invention

In order to overcome the problems in the related art, the present disclosure provides a plug, a power line, a socket and a control method of the plug, which can minimize the problem of damage caused by an excessively high temperature of the plug.

According to a first aspect of embodiments of the present disclosure, there is provided a plug for mating with a socket, the plug comprising:

the plug comprises a plug body and a plug cover, wherein the plug body comprises an insulating shell, the insulating shell comprises a contact surface facing the socket, a plurality of pins are convexly arranged on the contact surface and are used for being electrically connected with the socket,

a first detector disposed on the plug body for detecting a depth of the plug inserted into the socket,

a second detector provided to the plug body for detecting a temperature of the plug body,

a cut-off device in series with one of the prongs,

and the controller is in signal connection with the first detector, the second detector and the cut-off device respectively, so that when the depth does not reach a preset depth threshold value and/or when the temperature exceeds a preset temperature threshold value, the cut-off device is controlled to enable the interior of the plug to be powered off.

Optionally, the first detector is a proximity sensor for detecting a distance between the contact surface and a surface of the socket on which the pin holes are provided.

Optionally, the proximity sensor includes an infrared emission tube disposed in the insulating housing, a through hole is formed in the contact surface, the infrared emission tube corresponds to the through hole, and the plurality of pins are disposed around the through hole.

Optionally, the second detector comprises a heat conducting sheet and a temperature sensitive device in signal connection with the controller, the temperature sensitive device is in contact with the heat conducting sheet to detect the temperature of the heat conducting sheet, and the heat conducting sheet is arranged on the insulating shell.

Optionally, the contact surface includes an insulating region and a heat diffusion region disposed around the insulating region, the heat conducting sheet covers the heat diffusion region, and the plurality of pins are disposed on the insulating region and are not in contact with the heat conducting sheet.

According to a second aspect of the embodiments of the present disclosure, there is provided a power cord including a cable and the plug described above, the plug being connected to an end of the cable and electrically connected to the cable.

According to a third aspect of the embodiments of the present disclosure, there is provided a socket for mating with a plug, the socket including:

the insulating shell comprises a contact surface facing the plug, a plurality of pin holes matched with the plug are formed in the contact surface, conductive pieces electrically connected with the power supply line are arranged in the pin holes,

a first detector disposed in the insulating housing for detecting a depth of insertion of the plug into the socket,

a second detector disposed at the insulating housing for detecting a temperature of the socket,

a cut-off device for being arranged in series between the conductive member and the power supply line,

the controller, with first detector, the second detector with cutting device difference signal connection, with when the degree of depth does not reach predetermined degree of depth threshold value, and/or, when the temperature surpassed predetermined temperature threshold value, control cutting device cuts off electrically conductive piece with electric connection between the power supply line.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a control method of a plug, the method including:

detecting the depth of the pins of the plug inserted into the socket;

detecting the temperature of the plug;

and when the depth does not reach a preset depth threshold value and/or when the temperature exceeds a preset temperature threshold value, the electric connection inside the plug is cut off.

Optionally, the method further comprises:

and controlling the plug to be internally electrically connected when the depth reaches a preset depth threshold value and the temperature does not exceed the preset temperature threshold value.

Optionally, the detecting the depth of the pins of the plug inserted into the socket comprises:

the depth of the pins of the plug inserted into the socket is determined by detecting the distance between the surface of the plug provided with the pins and the surface of the socket provided with the pin holes.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the first detector detects the depth of the plug inserted into the socket, so that whether the plug is in an abnormal state such as looseness, incomplete insertion or half insertion is detected, and whether the temperature of the plug is normal can be detected through the second detector. When the depth does not reach the preset depth threshold value, the controller judges that the position of the plug is abnormal, and when the temperature exceeds the preset temperature threshold value, the controller judges that the temperature of the plug is abnormal. When the controller judges the position abnormality and/or the temperature abnormality, the controller controls the disconnecting device to disconnect the power of the inside of the plug and the electrical connection between the plug and the socket. Therefore, the plug can prevent the occurrence of heat loss caused by abnormal conditions of the socket and the plug, such as poor contact, loose plug, incomplete insertion or half insertion and the like, and can control the internal power failure of the plug in time through the cutting device when the temperature rises abnormally, thereby protecting the plug, the socket and electric equipment which are respectively electrically connected with the two sides of the plug and ensuring the electric safety.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic front view of a plug shown in accordance with an exemplary embodiment;

FIG. 2 is a schematic front view of a plug shown in accordance with an exemplary embodiment;

FIG. 3 is a control schematic diagram of a plug shown in accordance with an exemplary embodiment;

fig. 4 is a flowchart illustrating a control method of a plug according to an exemplary embodiment.

Description of the reference numerals

100-a plug; 10-a plug body; 11-an insulating housing; 111-contact surface; 1111-an insulating region; 1112-a thermal diffusion region; 112-perforating holes; 12-pin; 121-first pin 1; 122-second pin 2; 20-a first detector; 21-a heat conducting sheet; 30-a second detector; 40-a cutting device; 50-a controller.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

In the present disclosure, the use of directional words such as "inside and outside" means inside and outside of the insulating housing 11 unless otherwise stated. In addition, the terms "first", "second", and the like used in the embodiments of the present disclosure are for distinguishing one element from another, and have no order or importance.

In order to be able to provide a safe plug 100, ensuring electrical safety, according to a first aspect of the present disclosure, a plug 100 is provided, the plug 100 being adapted to mate with a socket for electrical connection. The plug 100 includes:

a plug body 10, the plug body 10 including an insulative housing 11. The insulating housing 11 is used to enclose the electronic components in the plug 100. The insulating housing 11 includes a contact face 111 facing the socket. A plurality of pins 12 are protruded from the contact surface 111, and the pins 12 are used for electrical connection with a socket. When the plug 100 is inserted into a socket, the contact surface 111 of the insulating housing 11 contacts a surface of the socket in which the holes of the pins 12 are formed.

The first detector 20 is provided in the plug body 10 and detects the depth of insertion of the plug 100 into the socket, thereby detecting whether the plug 100 is in an abnormal position such as loose, unfixed, or half-inserted state.

The second detector 30 is provided in the plug main body 10 and detects the temperature of the plug main body 10, thereby detecting whether or not an abnormal situation in which the temperature of the plug 100 is excessively high occurs.

The cut-off device 40, connected in series with one of the pins 12, controls the making and breaking of the electrical connection inside the plug 100.

And a controller 50 in signal connection with the first detector 20, the second detector 30 and the cut-off device 40, respectively, to control the cut-off device 40 to power off the interior of the plug 100 when the depth does not reach a preset depth threshold value and/or when the temperature exceeds a preset temperature threshold value. Alternatively, the depth threshold may be 1-2 mm, and the temperature threshold is primarily limited to the maximum withstand temperature of the plug insulator refractory, typically less than 250 degrees.

When the load power is relatively high, when the socket plug 100 is in poor contact due to looseness, non-firm insertion, half insertion, and the like, the poor contact may increase the connection resistance between the plug 100 and the socket metal electrode, and extremely high power consumption may be generated between the electrodes, and the power consumption may not be released, and may be directly converted into heat consumption (heat loss for short), and finally, the electrodes or the plastic structural members around the electrodes may be melted.

With the above-described configuration, the depth of insertion into the socket can be detected by the first detector 20, and thus, whether the plug 100 is in an abnormal state such as loose, not inserted in place, or half inserted can be detected, and whether the temperature of the plug 100 is normal can be detected by the second detector 30. When the depth does not reach the preset depth threshold value, the controller 50 makes a judgment that the position of the plug 100 is abnormal, and when the temperature exceeds the preset temperature threshold value, the controller 50 makes a judgment that the temperature of the plug 100 is abnormal. When the controller 50 makes a judgment of the position abnormality and/or a judgment of the temperature abnormality, the cut-off device 40 is controlled so that the inside of the plug 100 is powered off, and the electrical connection between the plug 100 and the outlet is cut off. Therefore, the plug 100 can prevent the occurrence of heat loss caused by abnormal conditions of the socket and the plug 100, such as poor contact, loose plug 100, incomplete insertion or half insertion, and the like, and can timely control the internal power failure of the plug 100 through the cut-off device 40 when the temperature rises abnormally, thereby protecting the plug 100, the socket and the electric equipment which are respectively electrically connected with the two sides of the plug 100, and ensuring the electric safety.

When the insertion depth of the plug 100 is detected separately in the related art, it cannot be guaranteed that whether the plug 100 is reliably contacted with the metal dome inside the socket can be detected. In the present disclosure, when the metal dome is aged and the first detector 20 detects that the insertion depth of the plug 100 is normal, the second detector 30 for detecting temperature is further provided, so that when heat loss occurs when the pin 12 is in poor contact with the metal dome inside the socket, the electrical connection of the plug 100 can be timely disconnected by detecting the rise of temperature, and the electrical safety can be further ensured.

The specific number of pins 12 is not limited in this disclosure, for example, taking three-phase plug 100 and two-phase plug 100 as shown in fig. 1 and 2, respectively, for example, three pins 12 are distributed in a triangle in three-phase plug 100, and two pins 12 are arranged in parallel in two-phase plug 100. It will be appreciated that in other embodiments, four, five, etc. more pins 12 may be provided, depending on the particular use requirements.

To reduce the volume occupied by the cut-off device 40, in one embodiment, the cut-off device 40 may be a thyristor switch. A thyristor switch is a high power switching type semiconductor device. The thyristor switch has the advantages of small volume and high power bearing capacity, so that the thyristor switch is placed in the insulating shell 11 of the plug 100 and cannot cause the volume of the plug 100 to be overlarge.

In other embodiments, the cut-off device 40 may also be a relay that is connected in series with the pin 12. When the relay is opened, the inside of the plug 100 is cut off, so that the plug 100, the socket, and the electric device at the other end of the plug 100 can be protected.

The particular location of the cut-off device 40 is not limited in this disclosure and in one embodiment the plug 100 includes a first pin 121 for electrical connection with the live wire and a second pin 122 for electrical connection with the neutral wire. The insulating housing 11 is provided inside with a first electric wire electrically connected to the first pin 121 and a second electric wire electrically connected to the second pin 122. Thus, the first wire is electrically connected to the live wire through the first pin 121, and the second wire is electrically connected to the neutral wire through the second pin 122. The cut-off device 40 is disposed in the insulating housing 11 and is connected in series to a first wire for electrical connection to a live wire, as shown in fig. 3.

Therefore, the disconnection device 40 can control the connection and disconnection of the live wire, and when the first detector 20 and the second detector 30 detect an abnormal condition, the live wire is disconnected to disconnect the electrical connection of the plug 100 itself, thereby protecting the plug 100, the outlet, the electric equipment at the other end of the plug 100, and the like. When the disconnecting device 40 is connected in series to the neutral wire, a small amount of current may still flow through the plug 100 after the disconnecting device 40 is disconnected. The cut-off device 40 is connected in series to the live line, and can completely cut off the current when the live line is cut off.

It is understood that in other embodiments, the severing device 40 may also be provided in series on the second wire. Or simultaneously arranging the cutting device 40 on the first electric wire and the second electric wire, and cutting off the first electric wire and the second electric wire when an abnormal condition occurs.

The controller 50 is used to control the overall operation in the plug 100. In one embodiment, the controller 50 may be a Micro Control Unit (MCU) that is small so as not to make the plug 100 overall bulky. As shown in fig. 3, the controller 50 is electrically connected to the first detector 20, the second detector 30, and the cut-off device 40, respectively, to complete signal transmission. Alternatively, the first detector 20, the second detector 30, and the controller 50 may all be disposed on the same circuit board, thereby facilitating the fixing and electrical connection thereof.

As an embodiment, the controller 50 may be an integrated circuit chip having signal Processing capability, and the controller 50 may be a general-purpose Processor including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a digital signal processor, an application specific integrated circuit, a field programmable gate array, a programmable logic controller 50 or other programmable logic device, discrete gate or transistor logic, discrete hardware components.

There is no limitation in the present disclosure as to which detector is used to detect the insertion depth of the plug 100, and optionally, in one embodiment, the first detector 20 is a proximity sensor for detecting the distance between the contact surface 111 and the surface of the socket where the holes of the pins 12 are provided. The proximity sensor has the advantages of safety, reliability and quick response of the system, so that accurate distance information between the contact surface 111 and the socket can be quickly obtained.

Since the pin 12 is clamped by the metal spring in the socket after being inserted, it is not convenient to directly measure the depth of the pin 12 itself inserted into the hole of the pin 12, and therefore, the proximity sensor is arranged to measure the distance between the contact surface 111 and the surface of the socket provided with the hole of the pin 12, so as to obtain the height of the pin 12 exposed out of the socket, thereby indirectly measuring the insertion depth of the pin 12. The first detector 20 is arranged in such a way that the installation and the disassembly are convenient, the insertion depth of the pins 12 can be detected without excessively improving the structure of the plug 100, and the cost is low.

In other embodiments, the first detector 20 may also be a distance sensor for detecting the distance between the contact surface 111 and the surface of the socket where the holes of the pins 12 are provided, or the depth of the pins 12 penetrating into the holes of the pins 12.

In the present disclosure, which proximity sensor is specifically adopted is not limited, and in one embodiment, the proximity sensor includes an infrared emission tube disposed in the insulating housing 11, as shown in fig. 1 and 2, a through hole 112 is formed on the contact surface 111, the infrared emission tube corresponds to the through hole 112, and the plurality of pins 12 are disposed around the through hole 112. The proximity sensor also includes a receiving tube for receiving the light beam, and the light beam emitted from the infrared emitting tube is received by the receiving tube by reflection.

The light beam emitted from the infrared transmitting tube can be emitted through the through hole 112, and when the plug 100 is completely inserted into the socket, the contact surface 111 contacts the socket, and almost no light beam is emitted, or only a very small amount of light beam is emitted through the through hole 112, and at this time, the receiving tube can receive a large amount of light beam emitted from the infrared transmitting tube. However, when the plug 100 is not completely inserted into the socket, there is a gap between the contact surface 111 of the plug 100 and the socket, and at this time, the amount of the reflected light beam that can be received by the receiver tube changes. At this time, it can be determined that the insertion depth of the plug 100 is abnormal, and may be in a position abnormal state such as poor contact, looseness, non-insertion, or half insertion. Further, by providing the through hole 112 between the plurality of pins 12, the distance between the socket and the portion where the pin 12 is located can be detected more accurately.

Alternatively, in other embodiments, the proximity sensor may also employ a capacitive proximity sensor or an inductive proximity sensor.

There is no limitation in the present disclosure as to which second detector 30 is used to detect the temperature of the plug 100, and optionally, in one embodiment, the second detector 30 includes a heat conducting plate 21 and a temperature sensitive device in signal connection with the controller 50. The temperature sensitive device is in contact with the heat conductive sheet 21 to detect the temperature of the heat conductive sheet 21, and the heat conductive sheet 21 is disposed in the insulating case 11. The heat conducting sheet 21 may be a metal sheet having good heat conductive properties. The heat conduction piece 21 can rapidly sense the change of heat on the socket, thereby facilitating the temperature sensitive device to detect the temperature of the plug 100. Alternatively, the temperature sensitive device may be disposed in the insulating case 11 and in contact with the rear surface of the heat conducting sheet 21.

In the related art, the temperature change on the pin 12 of the lead or plug 100 is detected directly by a temperature sensitive device, which may cause strong current leakage to the weak point system, causing a safety hazard, and may damage the weak point board, or cause a safety hazard of current leakage.

In the present embodiment, the temperature of the plug 100 is obtained by detecting the temperature of the heat conducting piece 21 by the temperature sensitive device, so that strong current and weak current are completely isolated, and the safety is high. In addition, the heat conducting sheet 21 can also radiate heat in time while conducting heat, thereby playing a role of radiating heat.

In order to further isolate strong current from weak current, as shown in fig. 1-2, the contact surface 111 includes an insulating region 1111 and a thermal diffusion region 1112 disposed around the insulating region 1111, the thermal conductive sheet 21 covers the thermal diffusion region 1112, and the plurality of pins 12 are disposed on the insulating region 1111 and are not in contact with the thermal conductive sheet 21.

By providing the insulating region 1111 and the thermal diffusion region 1112 on the contact surface 111 of the plug 100, the heat conducting sheet 21 is separated from the pin 12, and the pin 12 through which strong current flows is separated from the second detector 30 through which weak current flows, and the like, thereby providing higher safety.

According to a second aspect of the present disclosure, there is provided a power cord comprising a cable and the plug 100 described above, the plug 100 being connected to an end of the cable and being electrically connected to the cable. And supplying power to the electric equipment through the power line.

The power line comprising the plug 100 supplies power to the electric equipment, so that the occurrence of heat loss caused by abnormal conditions of the socket and the plug 100 such as poor contact, looseness, no in-place insertion or half insertion can be prevented, and when the temperature rises abnormally, the internal power failure of the plug 100 can be timely controlled through the cutting device 40, so that the plug 100, the socket and the electric equipment which are respectively electrically connected with the two sides of the plug 100 are protected, and the electric safety is ensured.

According to a third aspect of the present disclosure, a receptacle for mating with the plug 100 is provided in the present disclosure based on the same inventive concept as the plug 100 described above. The socket includes:

an insulative housing including a contact surface facing plug 100. The contact surface is provided with a plurality of pin holes for matching with the plug 100, and the pin holes are internally provided with conductive pieces for electrically connecting with the power supply line. When the plug 100 is inserted into a socket, the conductive members are in close contact with the pins, thereby achieving electrical connection between the plug 100 and the socket. Alternatively, the conductive member may be a metal dome.

And the first detector is arranged on the insulating shell and used for detecting the depth of the plug 100 inserted into the socket.

And the second detector is arranged on the insulating shell and used for detecting the temperature of the socket.

And a cut-off device for being arranged in series between the conductive member and the power supply line.

And the controller is in signal connection with the first detector, the second detector and the cutting device respectively so as to control the cutting device to cut off the electric connection between the conductive piece and the power supply line when the depth does not reach a preset depth threshold value and/or when the temperature exceeds a preset temperature threshold value.

According to the technical scheme, the depth of the plug 100 inserted into the socket can be detected through the first detector, so that whether the plug 100 is in an abnormal state such as loose, not inserted in place or half-inserted position can be detected, and whether the temperature between the plug 100 and the socket is normal can be detected through the second detector. When the depth does not reach the preset depth threshold value, the controller judges that the position of the plug 100 is abnormal, and when the temperature exceeds the preset temperature threshold value, the controller judges that the temperature of the socket is abnormal. When the controller makes a judgment of the position abnormality and/or a judgment of the temperature abnormality, the cut-off device is controlled so that the inside of the socket is cut off and the electrical connection between the socket and the power supply line is cut off. Therefore, the socket can prevent the occurrence of heat loss caused by abnormal conditions of the socket and the plug 100 such as poor contact, looseness, incomplete insertion or half insertion, and the like, and can control the internal power failure of the socket in time through the cut-off device when the temperature rises abnormally, thereby protecting the socket, the plug 100 electrically connected with the socket and electric equipment, and ensuring the electric safety.

It will be appreciated that the first detector, second detector, cut-off device and controller in the socket may be arranged in a similar manner to their corresponding arrangement in the plug 100.

The specific number of the pin holes is not limited in the present disclosure, for example, three-phase pin holes and two-phase pin holes are taken as examples, three pin holes are distributed in a triangular shape in the three-phase pin holes, and two pin holes are arranged in parallel in the two-phase pin holes. It will be appreciated that in other embodiments, four, five, etc. more pin holes may be provided, depending on the particular use requirements.

In order to reduce the volume occupied by the cut-off device, in one embodiment, the cut-off device may be a thyristor switch. A thyristor switch is a high power switching type semiconductor device. The thyristor switch has the advantages of small volume and high power bearing capacity, so that the thyristor switch is placed in an insulating shell of the plug 100 and cannot cause the volume of the plug 100 to be overlarge.

In other embodiments, the cut-off device may also be a relay connected in series with a conductive member in the pin hole. When the relay is turned off, the inside of the socket is cut off, so that the plug 100, the socket, and the electric device at the other end of the plug 100 can be protected.

The specific location of the cut-off device is not limited in this disclosure and in one embodiment the conductive members include a first conductive member for electrical connection with the live wire and a second conductive member for electrical connection with the neutral wire. A first electric wire electrically connected with the first conductive piece and a second electric wire electrically connected with the second conductive piece are arranged in the insulating shell. Thus, the first wire is electrically connected to the live wire through the first conductive member and the second wire is electrically connected to the neutral wire through the second conductive member. The cutting device is arranged in the insulating shell and is connected in series on a first electric wire electrically connected with the live wire.

Therefore, the disconnection/connection of the live wire can be controlled by the disconnection device, and when the first detector and the second detector detect an abnormal condition, the live wire is disconnected to disconnect the electrical connection of the plug 100 itself, thereby protecting the plug 100, the outlet, the electric equipment at the other end of the plug 100, and the like.

It will be appreciated that in other embodiments, the severing device may also be provided in series with the second wire. Or simultaneously, the first electric wire and the second electric wire are both provided with cutting devices, and when abnormal conditions occur, the first electric wire and the second electric wire are both cut off.

The controller is used to control the overall operation in the socket. In one embodiment, the controller may be a Micro Control Unit (MCU) that is small so as not to make the overall socket bulky. The controller is electrically connected with the first detector, the second detector and the cut-off device respectively so as to complete signal transmission. Alternatively, the first detector, the second detector and the controller may all be provided on the same circuit board, thereby facilitating the fixing and electrical connection thereof.

As an embodiment, the controller may be an integrated circuit chip having signal Processing capability, and the controller may be a general-purpose Processor including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a digital signal processor, an application specific integrated circuit, a field programmable gate array, a programmable logic controller or other programmable logic device, discrete gate or transistor logic, discrete hardware components.

There is no limitation in the present disclosure as to which detector is used to detect the insertion depth of the plug 100, optionally in one embodiment the first detector is a proximity sensor for detecting the distance between the contact surface and the surface of the plug 100 on which the pins are provided. The proximity sensor has the advantages of safety, reliability and quick response of the system, so that accurate distance information between the contact surface and the socket can be quickly obtained.

Since the pins are clamped by the conductive members in the socket after being inserted, it is inconvenient to directly measure the depth of the pins themselves inserted into the pin holes, and thus, the proximity sensor is arranged to measure the distance between the contact surface and the surface of the plug 100 on which the pins are arranged, so that the height of the pins exposed out of the socket can be obtained, and the insertion depth of the pins can be indirectly measured. The arrangement mode of the first detector is convenient to install and detach, the insertion depth of the plug pin can be detected without excessively improving the structure of the socket, and the cost is low.

In other embodiments, the first detector may also be a distance sensor for detecting the distance between the contact surface and the surface of the plug 100 on which the pins are provided, or the depth of the pins penetrating into the pin holes.

According to a fourth aspect of the present disclosure, based on the same inventive concept, there is also provided in the present disclosure a control method of the plug 100, which is applicable to the plug 100 provided in the first aspect described above.

As shown in the flow chart shown in fig. 4, the method includes:

s201, detecting the depth of the pin 12 of the plug 100 inserted into the socket;

s202, detecting the temperature of the plug 100;

and S203, when the depth does not reach the preset depth threshold value and/or when the temperature exceeds the preset temperature threshold value, the electric connection inside the plug 100 is cut off.

In the above steps, steps S201 and S202 do not have a sequential order.

In S201, the depth of insertion of the pin 12 of the plug 100 into the socket is detected to determine whether the plug 100 is loose, unfixed, or in a position abnormality state of the plug 100 such as half-inserted.

In S202, the temperature of plug 100 is detected in order to detect whether plug 100 has an abnormal condition of an excessively high temperature.

In S203, the depth threshold may be 1-2 mm, and the temperature threshold is mainly limited to the maximum withstand temperature of the plug insulator refractory, and is generally less than 250 ℃.

By the above method, it is possible to detect whether the plug 100 is in an abnormal state such as loose, not inserted, or half-inserted position by detecting the depth of insertion of the pin 12 into the socket, and it is also possible to detect whether the temperature of the plug 100 is normal. When the depth does not reach the preset depth threshold value and/or when the temperature exceeds the preset temperature threshold value, the internal power of the plug 100 is cut off, and the electric connection between the plug 100 and the socket is cut off. Therefore, the control method of the plug 100 can prevent the occurrence of heat loss caused by abnormal conditions of the socket and the plug 100, such as poor contact, loose plug 100, no-in-place insertion or half-insertion, and the like, and can timely control the internal power failure of the plug 100 when the temperature rises abnormally, thereby protecting the plug 100, the socket and the electric equipment which are respectively electrically connected with the two sides of the plug 100, and ensuring the electric safety.

To enable the plug 100 to resume normal use, in one embodiment, the method further comprises:

and S204, when the depth reaches a preset depth threshold value and the temperature does not exceed a preset temperature threshold value, the electrical connection is restored inside the control plug 100. Alternatively, the above-described cut-off device 40 may be controlled to restore the electrical connection.

In the initial state, if the inside of the plug 100 is electrically connected, step S204 follows step S203.

Due to the step S204, when the plug 100 is powered off due to an abnormal condition (over-high temperature or inaccurate insertion), the abnormal condition is solved, and the electric connection in the plug 100 can be recovered through the step, so that the normal work of the electric equipment is ensured.

There is no limitation in this disclosure as to the particular method employed to detect the depth of insertion of the pin 12 into the socket. In one embodiment, the S201 detects the depth of the pin 12 of the plug 100 inserted into the socket, and includes:

the depth of insertion of the pins 12 of the plug 100 into the socket is determined by detecting the distance between the surface of the plug 100 provided with the pins 12 and the surface of the socket provided with the holes of the pins 12.

Therefore, the height of the pin 12 exposed to the socket can be obtained by the distance between the surface of the plug 100 provided with the pin 12 and the surface of the socket provided with the hole of the pin 12, thereby indirectly measuring the insertion depth of the pin 12.

According to a fifth aspect of the present disclosure, there is also provided a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the control method of the plug 100 provided by the present disclosure.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.