CN215834838U

CN215834838U - Socket with improved structure

Info

Publication number: CN215834838U
Application number: CN202121300464.6U
Authority: CN
Inventors: 朱东友; 邵杰; 聂家鹏
Original assignee: SAIC GM Wuling Automobile Co Ltd
Current assignee: SAIC GM Wuling Automobile Co Ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-02-15
Anticipated expiration: 2031-06-09

Abstract

The utility model discloses a socket, which comprises a circuit board, and a mains supply inlet wire end and a mains supply outlet wire end which are arranged on the circuit board, and the socket also comprises: the first temperature detection module is used for detecting the inlet wire temperature of the inlet wire end of the commercial power and sending out a corresponding first temperature signal; the second temperature detection module is connected with the first temperature detection module and used for detecting the outlet wire temperature of the commercial power outlet end and sending a first temperature signal and a second temperature signal corresponding to the outlet wire temperature; the protection switch is arranged between the commercial power inlet end and the commercial power outlet end; and the control module is connected with the protection switch and the second temperature detection module, and is used for receiving the first temperature signal and the second temperature signal sent by the second temperature detection module and triggering the protection switch to be switched off when the first temperature signal or the second temperature signal exceeds the corresponding signal threshold value. Therefore, double-temperature detection of the socket is realized, the safety of the socket and a power supply line is improved, and the problem that the circuit is easily damaged due to overhigh temperature of the socket is solved.

Description

Socket with improved structure

Technical Field

The utility model relates to the technical field of socket protection, in particular to a socket.

Background

Along with the popularization of electric vehicles, more and more owners choose to use the household socket to charge the electric vehicle, and the electrical fire caused by overhigh temperature of the socket is more and more common, and the electrical safety, including personal and property safety and the use safety of the socket, is more and more valued by people.

In the use of socket, can arouse the output temperature of socket too high when the condition such as overload, short circuit, contact failure appear with electrical apparatus, when the cable that the user used ages or the cable is too thin, can arouse the inlet wire end temperature of socket too high, no matter the inlet wire end of socket or the temperature of output are too high, and the accumulation along with time all probably reaches the ignition point of object, causes the circuit damage, even takes place the conflagration.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a socket, aiming at solving the problems that the temperature of a wire inlet end or an output end of the socket is too high, so that a circuit is possibly damaged, and even a fire disaster happens.

In order to achieve the above object, the present invention provides a socket, including a circuit board, and a mains supply line inlet end and a mains supply line outlet end disposed on the circuit board, the socket further including:

the first temperature detection module is used for detecting the inlet wire temperature of the mains supply inlet wire end and sending out a corresponding first temperature signal;

the second temperature detection module is connected with the first temperature detection module and used for detecting the outlet temperature of the commercial power outlet end and sending the received first temperature signal and a second temperature signal corresponding to the outlet temperature;

the protection switch is arranged between the commercial power line inlet end and the commercial power line outlet end;

and the control module is connected with the protection switch and the second temperature detection module, and is used for receiving the first temperature signal and the second temperature signal sent by the second temperature detection module and triggering the protection switch to be switched off when the first temperature signal or the second temperature signal exceeds a corresponding signal threshold value.

Optionally, the socket further comprises:

the input end of the residual current detection module is connected with the mains supply incoming line end, and the output end of the residual current detection module is connected with the control module, and is used for detecting a residual current signal at the input end of the protection switch and sending the residual current signal to the control module;

the control module is further configured to receive the residual current signal sent by the residual current detection module, and trigger the protection switch to turn off when the residual current signal exceeds a corresponding signal threshold.

Optionally, the socket further comprises a housing for accommodating the circuit board, the housing is further provided with a test key, and the circuit board is further provided with a resistor;

one end of the test key is connected with a live wire incoming line end in the commercial power incoming line end, the other end of the test key is connected with one end of the resistor, and the other end of the resistor is connected with a zero line in the commercial power incoming line end.

Optionally, the socket further comprises:

the input end of the over-current detection module is connected with the live wire inlet end, and the output end of the over-current detection module is connected with the control module;

the overcurrent detection module is used for detecting a current signal at the input end of the protection switch and sending the current signal to the control module;

the control module is further configured to receive the current signal and trigger the protection switch to turn off when the current signal exceeds a threshold.

Optionally, the housing is further provided with an indication module connected to the control module and used for indicating the working state of the protection switch.

Optionally, the indication module includes a fault status indicator light and a normal status indicator light both connected to the control module.

Optionally, the socket further comprises:

and the reset key is connected with the reset end of the control module and used for generating and sending a trigger signal to the reset end of the control module when being triggered by the outside so as to trigger the protection switch to reset by the control module.

Optionally, the utility power inlet line end is a binding post, and the first temperature detection module is arranged on the binding post.

Optionally, a socket module is further arranged on the circuit board, a jack is formed in the socket module, the jack is used for being matched with a wiring end of an electric appliance, and the second temperature detection module is close to the jack.

Optionally, the protection switch is a relay.

The present invention provides a socket including: the first temperature detection module is used for detecting the inlet wire temperature of the mains supply inlet wire end and sending out a corresponding first temperature signal; the second temperature detection module is connected with the first temperature detection module; the device is used for detecting the outlet temperature of the commercial power outlet end and sending the first temperature signal and a second temperature signal corresponding to the outlet temperature to the control module, and when the first temperature signal and the second temperature signal exceed corresponding signal thresholds, the control module triggers the protection switch to be turned off. Therefore, the temperature of the commercial power inlet end and the temperature of the commercial power outlet end of the socket are detected in real time, the temperature of the commercial power inlet end is too high or the temperature of the outlet end is too high, the control module can control the protection switch to disconnect the output of the alternating-current power supply, the dual-temperature detection of the socket is realized, the circuit damage caused by the too high temperature of the socket and the fire hazard even are avoided, and the safety of the socket and a power supply line is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a block diagram of an embodiment of a receptacle of the present invention;

fig. 2 is a schematic structural diagram of the socket in fig. 1.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

The reference numbers illustrate:

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

When abnormal conditions occur in the use process of the socket, temperature changes generally occur, such as: when a cable used by a user is aged or the cable is too thin, the temperature of a wiring terminal of the socket, namely the temperature of a mains supply inlet end, can be increased; when the electrical appliance is overloaded, short-circuited or a copper sheet in the socket is aged and the like, the temperature of the jack connected with the plug of the electrical appliance, namely the commercial power outlet end, of the socket can be obviously increased; and moreover, the socket is covered by objects such as inflammable objects, and the temperature of the socket is also increased. If the situation of the overhigh temperature is not checked in time, the circuit is easily damaged due to the overhigh temperature of the socket, and even a fire disaster happens.

At present, the socket has the following defects in the use process:

1. the socket does not have the functions of overcurrent detection and residual current detection, and needs to be used together with a leakage protector or a circuit breaker at the front end of a distribution line.

2. A plurality of sockets use the earth-leakage protector or the circuit breaker of a front end simultaneously, when single socket electric leakage or short circuit, earth-leakage protector or circuit breaker can break off circuit, lead to the unable use of socket homogeneous outage on the whole return circuit.

3. The failure point cannot be located, requiring an electrician or professional to spend a great deal of time troubleshooting the failed outlet.

4. Failed outlets cannot be manually reset, requiring an electrician or professional to spend a significant amount of time repairing the failed outlet.

The present invention provides a socket, referring to fig. 1, in an embodiment, the socket includes a circuit board (not shown), and a mains power inlet terminal 100 and a mains power outlet terminal 101 disposed on the circuit board, and the socket further includes:

the first temperature detection module 102 is configured to detect an incoming line temperature of the mains supply incoming line end 100, and send a corresponding first temperature signal;

the second temperature detection module 103 is connected to the first temperature detection module 102, and is configured to detect an outgoing line temperature of the commercial power outgoing line terminal 101 and send out a second temperature signal corresponding to the first temperature signal and the outgoing line temperature;

the protection switch 104 is arranged between the commercial power inlet end 100 and the commercial power outlet end 101;

and the control module 105 is connected to the protection switch 104 and the second temperature detection module 103, and is configured to receive the first temperature signal and the second temperature signal sent by the second temperature detection module 103, and trigger the protection switch 104 to turn off when the first temperature signal or the second temperature signal exceeds a corresponding signal threshold.

The socket can be a single-phase two-hole socket or a single-phase three-hole socket, and supplies power for electrical appliances needing to use a mains supply alternating current power supply, such as an electric automobile, a refrigerator, an air conditioner, a television and the like.

The first temperature detection module 102 and the second temperature detection module 103 may be thermistor sensor circuits, and when the detected temperature changes, the current signals in the circuits correspondingly change.

The control module 105 is a control chip, and may be a digital signal processing chip and a single chip, or other control chips capable of processing the received current signal.

In this embodiment, the first temperature detection module 102 detects an incoming line temperature of the commercial power incoming line end 100, and sends a corresponding first temperature signal to the second temperature detection module 103; the second temperature detection module 103 detects the outlet temperature of the commercial power outlet 101, and sends the first temperature signal and a second temperature signal corresponding to the outlet temperature to the control module 105, and when the first temperature signal or the second temperature signal exceeds a corresponding signal threshold, the control module 105 triggers the protection switch 104 to turn off; when neither of the first temperature signal and the second temperature signal exceeds the corresponding signal threshold, the control module 105 controls the protection switch 104 to close. Through setting up double-circuit temperature detection in the socket, being interacted by second temperature detection module 103 and control module 105, reduce control module 105's port and set up quantity, this structure can guarantee to cut off the power supply when the socket temperature is too high simultaneously, has solved the socket temperature and has caused the circuit damage easily, arouses the problem of conflagration even, and help realizes the double temperature detection of socket, has improved the security of socket and power supply line.

In a further embodiment, the socket further comprises:

the input end of the residual current detection module 106 is connected to the mains supply incoming line end 100, and the output end of the residual current detection module 106 is connected to the control module 105, and is configured to detect a residual current signal at the input end of the protection switch 104 and send the residual current signal to the control module 105;

the control module 105 is further configured to receive the residual current signal sent by the residual current detection module 106, and trigger the protection switch 104 to turn off when the residual current signal exceeds a corresponding signal threshold.

It is understood that the Residual Current (Residual Current), i.e., leakage Current, refers to the Current vector sum of each phase (including neutral line) in the low-voltage distribution line, which is not zero. In this embodiment, the electric leakage detection module can be residual current transformer, cup joint in on live wire L and the zero line N of protection switch 104 input, the residual current is the vector sum of the electric current on live wire and the zero line, and the residual current is zero under the normal condition, when ageing damaged or with the electric circuit trouble, has the condition of electric leakage to take place when with the electric cable, and the residual current value is no longer zero this moment.

Preferably, the corresponding signal threshold value of the residual current is set to 20 mA.

When the residual current signal exceeds 20mA, the control chip triggers the protection switch 104 to turn off. Through setting up residual current detection module 106, the help detects the residual current of the circuit at socket place, adds control module 105's turn-off logic, has improved socket safety in utilization to, the earth-leakage protector or the circuit breaker of this socket place circuit can not break off, can not influence the normal use of other sockets on the return circuit and circuit.

Based on the above embodiments, in a further embodiment, please refer to fig. 1 and 2 together, the socket further includes a housing (not labeled) for accommodating the circuit board, the housing is further provided with a test key 107, and the circuit board is further provided with a resistor 108;

one end of the test key 107 is connected with a live wire incoming line end in the commercial power incoming line end 100, the other end of the test key 107 is connected with one end of the resistor 108, and the other end of the resistor 108 is connected with a zero line in the commercial power incoming line end 100.

The test key 107 and the resistor 108 are used for testing the functions of the residual current detection module 106, and when the test key 107 is triggered, the resistor 108 is connected between a live wire and a zero wire, and residual current is generated in a circuit. For example, the resistance value of the resistor 108 is 15K, when the test key 107 is triggered, a current of 10 to 20mA is generated in a corresponding circuit (a specific range is not limited), and at this time, a signal threshold corresponding to a residual current is reached, and if the control chip triggers the protection switch 104 to turn off, it is determined that the residual current detection module 106 functions normally.

By arranging the test key 107 and the resistor 108, the residual current detection module 106 of the socket is detected, the turn-off logic of the control module 105 is added, the convenience of socket function self-checking is improved, and the overhaul time of an electrician or a professional is saved.

Further, the socket further includes:

the input end of the over-current detection module 109 is connected with the live wire inlet end, and the output end of the over-current detection module 109 is connected with the control module 105;

the overcurrent detection module 109 is configured to detect a current signal at an input end of the protection switch 104, and send the current signal to the control module 105;

the control module 105 is further configured to receive the current signal, and trigger the protection switch 104 to turn off when the current signal exceeds a threshold.

The over-current detection module 109 may be a current transformer, which is sleeved on a live line connected to the input end of the protection switch 104, and when over-current conditions such as overload and short circuit of an electrical appliance occur, the control chip triggers the protection switch 104 to turn off.

Through setting up overcurrent detection module 109, the help detects the electric current of the circuit that the socket belongs to, when the condition such as short circuit, overload, contact failure appears, and the corresponding threshold value that surpasss of current signal to add control module 105's turn-off logic, prevent that the user from electrocuting and electric fire from taking place, improved the security that the socket used.

Based on the above embodiment, in a further embodiment, the housing is further provided with an indication module 110 connected to the control module 105 for indicating the working state of the protection switch 104.

Further, the indication module 110 is a fault status indicator light and a normal status indicator light connected to the control module 105.

The fault status indicator light and the normal status indicator light can be a double-color indicator light, such as a red-green double-color indicator light, when the indicator light displays red, the socket is in a fault status, and when the indicator light displays green, the socket is in a normal status.

It should be noted that the socket housing includes a rear case 200 and a cover plate (not shown) covering the rear case 200, and the cover plate has display holes corresponding to the fault status indicator light and the normal status indicator light, so that the fault status indicator light and the normal status indicator light can be displayed through the cover plate.

Through setting up indicating module 110, can in time show the operating condition of socket, remind the user to investigate the trouble or indicate the socket to be failure state unable use, saved electrician or professional's investigation time, improved the security of socket simultaneously.

Based on the above embodiment, in a further embodiment, the socket further comprises:

the reset key 111 is connected to the reset terminal of the control module 105, and configured to generate and send a trigger signal to the reset terminal of the control module 105 when being triggered by an external device, so that the control module 105 triggers the protection switch 104 to reset.

The reset key 111 is arranged on the shell, when the fault reason of the socket is eliminated, a user manually triggers the reset key 111, the control chip controls the protection switch 104 to be closed, and the socket is restored to a normal state.

It will be appreciated that the reset key 111 is provided on the cover plate.

By setting the reset key 111 and adding the closing logic of the control module 105, after a user removes a fault condition, the reset key can be triggered externally to enable the socket to recover a normal working state, so that the convenience of socket use is enhanced, and the difficulty of maintenance of professionals is reduced.

Based on the above embodiment, in a further embodiment, the commercial power inlet terminal 100 is a terminal, and the first temperature detection module 102 is disposed on the terminal.

It can be understood that, the mounting groove has been seted up to one side of backshell 200, and the terminal is installed in the diapire of mounting groove, and for conveniently working a telephone switchboard, the through wires hole 201 that the power supply cable passed is seted up to the lateral wall of mounting groove.

Through setting up first temperature detect module 102 on the terminal, can detect out the inlet wire temperature of commercial power inlet wire end 100 in real time, strengthened the degree of accuracy that socket temperature detected.

Based on the above embodiment, in a further embodiment, the circuit board is further provided with a socket module, the socket module is provided with a jack, the jack is used for being matched with a terminal of an electrical appliance, and the second temperature detection module 103 is arranged close to the jack.

It can be understood that the terminal of the electrical appliance is a plug, and the jack can be two holes or three holes and is matched with the plug of the electrical appliance to supply power to the electrical appliance.

Through being close to second temperature detect module 103 jack setting, can real-time detection commercial power outlet terminal 101 be qualified for the next round of competitions the temperature, strengthened socket temperature detection's the degree of accuracy.

Based on the above embodiments, in a further embodiment, the protection switch 104 is a relay.

The relay can be a normally closed relay, is arranged on a live wire between the wiring terminal and the jack, and is used for restoring power supply or cutting off power supply by switching on or off the live wire to control the socket.

Through the arrangement of the relay, the connection of a power supply line can be quickly closed or closed, and the closing or closing speed of the socket is improved.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a socket, the socket includes the circuit board and sets up commercial power inlet wire end and commercial power outlet terminal on the circuit board, its characterized in that, the socket still includes:

2. The receptacle of claim 1, wherein the receptacle further comprises:

3. The socket of claim 1, further comprising a housing for receiving the circuit board, the housing further having a test button thereon, the circuit board further having a resistor thereon;

4. The receptacle of claim 3, wherein the receptacle further comprises:

5. The socket of claim 3, wherein the housing is further provided with an indication module connected to the control module for indicating the operating status of the protection switch.

6. The receptacle of claim 5, wherein the indicator module includes a fault status indicator light and a normal status indicator light, both connected to the control module.

7. The receptacle of claim 1, wherein the receptacle further comprises:

8. The socket according to any one of claims 1 to 7, wherein the mains supply inlet terminal is a wiring terminal, and the first temperature detection module is arranged on the wiring terminal.

9. The socket of claim 8, wherein the circuit board is further provided with a socket module, the socket module is formed with a jack, the jack is adapted to fit with a terminal of an electrical appliance, and the second temperature detection module is disposed near the jack.

10. A socket according to any one of claims 1 to 7, wherein the protection switch is a relay.