CN110197983B

CN110197983B - Safety socket

Info

Publication number: CN110197983B
Application number: CN201910342105.8A
Authority: CN
Inventors: 刘洋; 张燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-06-26
Anticipated expiration: 2039-04-26
Also published as: CN110197983A

Abstract

The invention relates to the technical field of sockets, in particular to a safety socket which comprises a socket shell, a middle cover and a safety pin, wherein the middle cover is provided with a jack which is arranged corresponding to a plug of electrical equipment, the safety pin can be pressed and limited on the middle cover, the middle cover can be pressed and limited on the socket shell, a safety lock structure and an electric connection switch component are arranged in the socket shell, the safety pin and the safety lock structure are arranged corresponding to each other, the safety lock structure is controlled to be opened by pressing the safety pin, the middle cover and the electric connection switch component are arranged corresponding to each other, and the electric connection switch component is controlled by pressing the middle cover to realize the circuit connection and the circuit disconnection of the safety socket; the safety socket is also provided with a locking assembly for locking the safety pin or the middle cover. The safety socket is ingenious in design, high in safety, reliable in use and convenient to operate.

Description

Safety socket

Technical Field

The invention relates to the technical field of sockets, in particular to a safety socket.

Background

As a widely used electrical connection device, the safety, reliability, usability and cost of the socket are important criteria for determining whether the socket has market prospect, and furthermore, the increasing frequent electric shock accidents of children also expose disadvantages in terms of safety performance of the socket. In addition, a safety hazard prevention measure should be taken for a socket installed in a public place, for example, a socket installed in a tourist passage in an airport, a waiting hall, or the like should prevent a child from getting an electric shock. Meanwhile, as the tourists can use the sockets to charge some electronic products, risks may exist when the electronic products are charged, for example, the electronic products explode to cause fire, or the normal operation of public electronic equipment in public places is disturbed, and therefore the tourists and the pedestrians are prevented from charging the electronic equipment at will.

The socket in the prior art is poor in safety and needs to be improved.

Disclosure of Invention

In order to solve the problems, the invention provides the safety socket which is high in safety, capable of greatly reducing the electric shock risk of children and suitable for being installed and used in public places.

In order to achieve the purpose, the technical scheme applied by the invention is as follows:

the utility model provides a safety socket, including socket shell, well lid and safety pin, in cover and be equipped with the jack that corresponds the setting with the electrical equipment plug, the safety pin can be pressed spacing cover in, well lid can be pressed spacing cover on socket shell, be equipped with safety lock structure and electric connection switch module in the socket shell, the safety pin corresponds the setting with the safety lock structure, through pressing opening of safety pin control safety lock structure, well lid corresponds the setting with the electric connection switch module, circuit intercommunication and the circuit disconnection of safety socket are realized to lid control electric connection switch module in pressing.

The safety socket is also provided with a locking assembly for locking the safety pin or the middle cover, and the locking assembly comprises a key and a locking pin which is driven by the key to extend to lock the safety pin or the middle cover. When the safety pin or the middle cover is locked, the safety pin or the middle cover cannot be pressed, and the safety socket is in a disconnected safety state.

Through the arrangement mode, for the socket which is installed at a home and has a low horizontal height and is easy to be contacted, the safety pin can be locked through the key corresponding to the locking assembly, so that the safety pin cannot be pressed, the socket cannot be electrified at the moment, even if a child stretches fingers or other objects into the jacks, the risk of electric shock does not exist, meanwhile, the child cannot realize the electrification of the safety socket through conventional operations such as panel pressing, and the like, so that the safety is good. Or the centering cap is locked so that the middle cap cannot be pressed (even if the safety pin is pressed, the middle cap cannot be pressed), the same technical effects can be achieved.

In addition, for the application environment in public places, because of some application requirements (for example, some devices need to be powered on, or sockets need to be reserved for some specific application situations, etc.), some sockets must be arranged in public places. When the safety pin locking device is used, in order to avoid electric shock risks or reduce safety risks (such as fire risks caused by charging product faults or the influence of circuit faults on normal work of public equipment) caused by the fact that non-working personnel use the socket at will, the safety pin can be locked through a key corresponding to the locking assembly, the safety pin cannot be pressed, at the moment, the socket cannot be powered on, the non-working personnel cannot use the socket, the socket cannot be powered on through conventional operations such as pressing a panel, and therefore safety is good. In practical application, the key corresponding to the socket can be kept by related staff. Or the centering cap is locked so that the middle cap cannot be pressed (even if the safety pin is pressed, the middle cap cannot be pressed), the same technical effects can be achieved.

Furthermore, the safety lock structure comprises a mode control board, a bottom board assembly and a sliding pin assembly which are arranged inside the socket shell, the mode control board can be limited on a bottom board of the bottom board assembly in a swinging mode, a sliding rail and a control rod control groove are formed in the mode control board, the control rod control groove is formed by adopting a slotted hole structure with a small upper part and a wide lower part, a sliding groove and a safety pin control rod are formed in the safety pin, the safety pin control rod is arranged in the control rod control groove in a matched mode, one end of a sliding pin of the sliding pin assembly is positioned on the middle cover, and the other end of the sliding pin penetrates through the sliding groove to be.

Furthermore, a safety pin spring is arranged between the safety pin and the bottom plate, a first spring positioning groove is formed in the safety pin, a second spring positioning groove is formed in the bottom plate, one end of the safety pin spring is positioned in the first spring positioning groove, the other end of the safety pin spring is positioned in the second spring positioning groove, and a middle cover spring is arranged between the middle cover and the lower shell of the socket shell.

Furthermore, a mode control plate limiting groove is formed in the bottom plate, a limiting hole is formed in the mode control plate, the lower portion of the mode control plate is arranged in the mode control plate limiting groove in a matched mode, and the mode control plate is limited in the mode control plate limiting groove in a swinging mode through a limiting pin.

Furthermore, the slide rail adopts a triangular groove structure, three state positions are formed in the slide rail, and the three state positions are connected through a ramp, so that the slide pin can irreversibly slide between the three state positions in sequence under the normal working state of the safety socket. The normal working state of the safety socket refers to normal use of the safety socket, and if the conditions of overcurrent protection, temperature protection, plug plugging and unplugging of the middle cover in a pressing state and the like of the safety socket are triggered, the normal working state of the safety socket is not met.

Furthermore, the sliding pin assembly comprises a sliding pin, a fixed magnetic ring, a bimetallic strip, a limiting ring and a movable magnetic ring, the limiting ring and the movable magnetic ring are fixed at one end of the sliding pin, the other end of the sliding pin sequentially penetrates through the bimetallic strip and the fixed magnetic ring, and a fixed magnetic ring fixing seat corresponding to the fixed magnetic ring and a coil corresponding to the movable magnetic ring are arranged on the middle cover.

Furthermore, the electric connection switch assembly comprises a static contact piece arranged on the bottom plate and a movable contact piece arranged on the middle cover, the upper portion of the static contact piece is provided with a static contact, the lower portion of the static contact piece is provided with a wiring terminal of an external power supply lead, the movable contact piece is provided with a movable contact, the movable contact and the static contact are arranged correspondingly, and the movable contact piece is driven to move downwards through pressing the middle cover to be communicated with a circuit of the static contact piece.

Furthermore, the static contact is limited on the bottom plate through a limiting arc, and a static contact buffer spring is arranged between the static contact and the bottom plate.

Furthermore, a first limiting cavity, a second limiting cavity and a third limiting cavity are formed on the inner wall of the middle cover, plug bushes are arranged in the first limiting cavity and the third limiting cavity respectively and fixedly connected with the movable contact piece, a fixed magnetic ring fixing seat and a coil are arranged on one side of the second limiting cavity, and a through hole through which a sliding pin can pass conveniently is formed in the other side of the second limiting cavity.

Furthermore, the socket shell comprises an upper shell and a lower shell, the upper shell is fixedly connected with the lower shell, and the upper shell is provided with a power-on indicating lamp.

The invention has the beneficial effects that:

the safety lock has the advantages that the safety lock is adopted, the safety lock has the safety lock function, the safety pin is locked through the locking assembly, the safety performance is good, the electric shock risk can be effectively reduced, and meanwhile, the safety lock is suitable for being used in environments such as public places.

Drawings

FIG. 1 is a view of the exterior of a safety socket;

FIG. 2 is an exploded view of the safety receptacle as a whole;

FIG. 3 is another perspective view of FIG. 2;

FIG. 4 is a structural view of the floor assembly;

FIG. 5 is a view of a safety pin configuration;

FIG. 6 is a view showing the structure of a mode control board;

FIG. 7 is a diagram of a slide rail configuration;

FIG. 8 is a pictorial view of the sliding track of the slide pin within the slide track;

FIG. 9 is a structural view of the slide pin assembly;

FIG. 10 is a static initial state diagram;

fig. 11 is a view showing a state where the static contact is pressed;

fig. 12 is a view of the initial state of the safety receptacle;

FIG. 13 is a diagram of the safety receptacle power on state;

FIG. 14 is a temperature protection initial state diagram;

FIG. 15 is a temperature protection operating state diagram;

fig. 16 is an overcurrent protection initial state diagram;

FIG. 17 is a diagram of an overcurrent protection operating state;

FIG. 18 is a schematic view of the locking assembly;

FIG. 19 is a schematic view of a locking assembly employing a gear in combination with a rack;

FIG. 20 is a schematic view of the configuration of the slide pin assembly in cooperation with the shear pin.

1. A socket housing; 10. an upper shell; 11. a lower case; 2. a middle cover; 20. a jack; 21. a first limiting cavity; 22. a second limiting cavity; 23. a third limiting cavity; 24. a fixed magnetic ring fixing seat; 25. a coil; 26. a middle cap spring; 3. a shear pin; 30. a chute; 31. a shear pin control lever; 32. a first spring positioning groove; 33. a locking assembly; 331. a lock pin; 332. a gear; 333. a rack; 334. rotating the hole; 34. resetting the clamping groove; 4. a power-on indicator light; 5. a movable contact spring; 50. a movable contact; 51. inserting a sleeve; 6. a mode control board; 60. a slide rail; 600. a first status bit; 601. a second status bit; 602. a third status bit; 61. a control lever control slot; 62. a limiting hole; 7. a base plate assembly; 70. a base plate; 71. a mode control plate limiting groove; 72. a shear pin spring; 73. a spacing pin; 74. a static contact piece; 75. a stationary contact buffer spring; 76. a stationary contact; 77. a second spring positioning groove; 78. limiting an arc; 8. a slide pin assembly; 80. a slide pin; 81. a fixed magnetic ring; 82. a bimetal; 83. a limiting ring; 84. a movable magnetic ring; 85. resetting the step; 9. and a terminal.

Detailed Description

The technical solution of the present invention is described below with reference to the accompanying drawings and examples.

As shown in fig. 1 to 5, the safety socket according to the present invention includes a socket housing 1, a middle cover 2 and a safety pin 3, wherein the middle cover 2 is provided with a jack 20 corresponding to an electrical device plug, the safety pin 3 is disposed on the middle cover 2 in a position capable of being pressed, the middle cover 2 is disposed on the socket housing 1 in a position capable of being pressed, a safety lock structure and an electrical connection switch assembly are disposed in the socket housing 1, the safety pin 3 is disposed corresponding to the safety lock structure, the safety lock structure is controlled to be opened by pressing the safety pin 3, the middle cover 2 is disposed corresponding to the electrical connection switch assembly, and the electrical connection and disconnection of the safety socket are achieved by pressing the middle cover 2 to control the electrical connection switch assembly. The above constitutes the basic structure of the present invention.

The safety lock structure of the safety socket is controlled to be opened by pressing the safety pin 3, the safety lock structure is used for locking the middle cover 2, namely, if the safety lock structure is not opened (the safety pin 3 is not pressed down), a user cannot press down the middle cover 2, namely, the middle cover 2 is locked; through pressing 2 control electric connection switch module in the lid and realize the circuit intercommunication and the circuit disconnection of safety socket, adopt such structure setting, can make safety socket have the safety lock function and break-make circuit switching function, its design benefit, the security is high, uses more reliably, and it is more convenient to operate.

In practical application, the safety pin 3 is arranged between the two jacks 20, the arrangement of the structure is adopted, when a plug of electrical equipment is inserted into the jack 20, the safety pin 3 is pressed equivalently, the safety lock structure is opened, at the moment, the middle cover 2 is pressed to control the electric connection switch component to realize the circuit connection and the circuit disconnection of the safety socket, namely, under the condition that the plug is not pulled out, the safety socket realizes the switch function, the user operation can be simplified, and meanwhile, under any condition, the safety socket automatically resets to the power-off mode and the safety lock mode as long as the plug is pulled out, and the operation is very convenient.

More specifically, the safety lock structure includes a mode control board 6, a bottom board assembly 7 and a sliding pin assembly 8 which are arranged inside the socket housing 1, the mode control board 6 is limited on a bottom board 70 of the bottom board assembly 7 in a swinging manner, a slide rail 60 and a control rod control groove 61 are arranged on the mode control board 6, the control rod control groove 61 is arranged in a groove hole structure with a wide upper part and a wide lower part, a slide groove 30 and a safety pin control rod 31 are arranged on the safety pin 3, the safety pin control rod 31 is penetrated in the control rod control groove 61 in a matching manner, one end of a sliding pin 80 of the sliding pin assembly 8 is positioned on the middle cover 2, and the other end of the sliding pin 80 penetrates through the slide groove 30 to be. By adopting the structure, one end of the sliding pin 80 is limited on the middle cover 2, the other end of the sliding pin passes through the sliding groove 30 and is embedded in the sliding rail 60, which is equivalent to limiting one end of the sliding pin 80 in the sliding rail 60, and the safety pin control rod 31 on the safety pin 3 passes through the control rod control groove 61, which is equivalent to limiting the safety pin control rod 31 in the control rod control groove 61.

In practical application, due to the arrangement of the chute 30, when the safety pin 3 is pressed, the sliding pin 80 slides in the chute 30, and the sliding pin 80 is not pressed.

As shown in fig. 12, in the initial state, the safety pin 3 is in the sprung state, the sliding pin 80 is located at the topmost position of the sliding rail 60, the safety pin control lever 31 is located at the topmost position of the upper portion of the control lever control groove 61, at this time, the downward pressing of the middle cover 2 inevitably drives the sliding pin 80 to move downward, the downward movement of the sliding pin 80 is limited by the sliding rail 60, the mode control board 6 is forced to swing, and the cooperation between the safety pin control lever 31 and the control lever control groove 61 prevents the mode control board 6 from swinging, so that the limiting effect on the middle cover 2 is realized, and the middle cover 2 is pressed immovably. When the safety pin 3 is pressed to move downwards, the safety pin control rod 31 is driven to move in the control rod control groove 61 until the safety pin control rod 31 moves downwards to a position which is wide at the lower part of the control rod control groove 61, at this time, the locking of the mode control plate 6 by the matching of the safety pin control rod 31 and the control rod control groove 61 is released, namely, the mode control plate 6 can swing, therefore, the sliding pin 80 can move downwards along with the middle cover 2, the mode control plate 6 swings by matching with the movement of the sliding pin 80, and at this time, the middle cover 2 can be pressed.

It should be noted that the following two points are necessary to energize the safety socket: 1) the safety pin 3 must be pressed first (to unlock the middle cover 2) and the safety pin 3 cannot be made to bounce (if the electrical equipment is not, the safety pin 3 must be pressed all the time by hand or other means and cannot be released); 2) the middle cover 2 is pressed again, and the safety socket is electrified at the moment. The plug is very convenient to use, and the socket can be electrified only by inserting the plug into the jack 20 (the plug can press the safety pin 3 and keep the safety pin 3 in a pressed state all the time), and then contacting the safety pin 3 to lock the middle cover 2 and pressing the middle cover 2; and for the condition that child's play, it is very difficult to make safety socket circular telegram and the danger of electrocuteeing to appear (because child will press safety pin 3 and well lid 2 simultaneously to still need stretch into the jack with finger or other article), can effectively avoid child's condition of electrocuteeing relatively to take place, uses safelyr.

More specifically, a safety pin spring 72 is disposed between the safety pin 3 and the bottom plate 70, a first spring positioning groove 32 is disposed on the safety pin 3, a second spring positioning groove 77 is disposed on the bottom plate 70, one end of the safety pin spring 72 is positioned in the first spring positioning groove 32, the other end of the safety pin spring 72 is positioned in the second spring positioning groove 77, and a middle cover spring 26 is disposed between the middle cover 2 and the lower shell 11 of the socket housing 1.

With such a configuration, when the safety pin 3 is not pressed by an external force for limitation, the safety pin 3 can always be in the sprung state by the elastic force of the safety pin spring 72. That is, in any case, as long as the plug is pulled out, the shear pin 3 is sprung up by the elastic force of the shear pin spring 72.

More specifically, the bottom plate 70 is provided with a mode control plate limiting groove 71, the mode control plate 6 is provided with a limiting hole 62, and the lower portion of the mode control plate 6 is arranged in the mode control plate limiting groove 71 in a matching manner and is limited in the mode control plate limiting groove 71 in a swinging manner through a limiting pin 73. With such a structural arrangement, the lower portion of the mode control plate 6 is retained in the mode control plate retaining groove 71 by the retaining pin 73, and the mode control plate 6 can be swingably arranged.

In practical applications, the width of the control lever control groove 61 of the present invention is slightly larger than the width of the lower portion of the mode control plate 6, so that the mode control plate 6 can slightly swing in the control lever control groove 61 after the limit pin 73 is limited in the control lever control groove 61.

In practical application, the sidewall of the control rod control groove 61 of the present invention is provided with a through hole for inserting the limit pin 73, that is, the installation steps are as follows: the lower part of the mode control plate 6 is arranged in the control rod control groove 61, the limit pin 73 penetrates through the through hole on the side wall of the control rod control groove 61 and then penetrates through the limit hole 62 on the mode control plate 6, and the mode control plate 6 is limited in the control rod control groove 61 under the condition that the limit pin 73 is not pulled out.

As shown in fig. 6 to 8, the slide rail 60 adopts a triangular groove structure, three status positions (a first status position 600, a second status position 601 and a third status position 602) are formed in the slide rail 60, and the three status positions are connected by a ramp (in fig. 7, the reference character a indicates the highest position of the ramp, and all the three status positions are located at the lowest position of the ramp), so that the slide pin 80 irreversibly slides between the three status positions in sequence under the normal working state of the safety socket. By adopting the structural arrangement, when the sliding pin 80 is in the first state position 600, the electric connection switch assembly is in a power-off mode at the moment, when the middle cover 2 is pressed downwards (the safety pin 3 is pressed at the moment), the middle cover 2 drives the sliding pin 80 to move downwards, so that the sliding pin 80 slides from the first state position 600 to the second state position 601, after the hand is released, the sliding pin 80 in the second state position 601 at the lower position cannot slide backwards to the first state position 600 due to the limitation of the ramp high position a of the first state position 600, the electric connection switch assembly of the safety socket is always in a connected state at the moment, and when the middle cover 2 is pressed downwards, the sliding pin 80 is driven by the middle cover 2 to continue to move downwards, so that the sliding pin 80 climbs and slides from the second state position 601 to the third state position 602, and similarly, the sliding pin 80 cannot slide backwards from the third state position 602 to the second state position 601; when the middle cover 2 is released, the middle cover 2 is pushed to move upwards due to the elastic force of the middle cover spring 26, the sliding pin 80 is driven to move upwards, the sliding pin 80 climbs and slides from the third state position 602 to the first state position 600, and returns to the initial position, the sliding track of the sliding pin 80 in the sliding rail 60 is as shown in fig. 8, and the moving direction is irreversible.

As shown in fig. 9, the sliding pin assembly 8 includes a sliding pin 80, a fixed magnetic ring 81, a bimetal 82, a limiting ring 83 and a moving magnetic ring 84, the limiting ring 83 and the moving magnetic ring 84 are fixed at one end of the sliding pin 80, the other end of the sliding pin 80 sequentially passes through the bimetal 82 and the fixed magnetic ring 81 (both the bimetal 82 and the fixed magnetic ring 81 are fixed with the middle cover 2), and the middle cover 2 is provided with a fixed magnetic ring fixing seat 24 corresponding to the fixed magnetic ring 81 and a coil 25 corresponding to the moving magnetic ring 84. By adopting the structure, the safety socket has the temperature protection function and the overcurrent protection function.

As shown in fig. 14, in an initial state, the bimetal 82 is limited by the limiting ring 83, the convex surface of the cooled bimetal 82 faces the direction of the fixed magnetic ring 81, when the temperature inside the safety socket is too high, the bimetal 82 is affected by heat, and the convex surface of the bimetal 82 deforms towards the direction of the movable magnetic ring 84, so that the limiting ring 83 is jacked up (i.e. moves towards the direction away from the mode control plate 6), so that the sliding pin 80 limited in the second state position 601 of the sliding rail 60 moves out, as shown in fig. 15, at this time, the middle cover 2 bounces again under the rebound force of the middle cover spring 26 to perform a power-off function, and after the temperature inside the safety socket is reduced, the convex surface of the bimetal 82 resets again (the sliding pin 80 resets to the first state position 600), thereby effectively performing a temperature protection function, and being safer to use.

As shown in fig. 16, in the initial state, the moving magnetic ring 84 is fitted in the coil 25, when the current is too large, the current flowing in the coil 25 is increased, an electromagnetic force is generated between the coil 25 and the moving magnetic ring 84 (the magnetic force is greater than the attractive force between the fixed magnetic ring 81 and the moving magnetic ring 84), the sliding pin 80 is pulled to move out from the second state 601 in the sliding rail 60, as shown in fig. 17, at this time, the middle cap 2 is rebounded under the action of the rebounding force of the middle cap spring 26, and the power-off function is performed. When the current is reduced, at this time, the attraction between the coil 25 and the moving magnetic ring 84 is reduced or disappears, and the attraction of the fixed magnetic ring 81 to the moving magnetic ring 84 causes the moving magnetic ring 84 to drive the sliding pin 80 to move into the first state position 600 of the sliding rail 60 again, so that the reset is realized, the overcurrent protection function is effectively played, and the use is safer.

More specifically, the electric connection switch assembly comprises a static contact 74 arranged on the bottom plate 70 and a movable contact 5 arranged on the middle cover 2, wherein a static contact 76 is arranged at the upper part of the static contact 74, a connecting terminal 9 for connecting with an external power supply lead is arranged at the lower part of the static contact 74, a movable contact 50 is arranged on the movable contact 5, the movable contact 50 is arranged corresponding to the static contact 76, and the movable contact 5 is driven to move downwards by pressing the middle cover 2 to realize circuit communication with the static contact 74. With the structure, the movable contact 50 on the movable contact piece 5 is connected with the fixed contact 76 on the fixed contact piece 74 to realize circuit communication, and the movable contact 50 on the movable contact piece 5 is separated from the fixed contact 76 on the fixed contact piece 74 to realize circuit disconnection.

In practical application, the movable contact spring 5 is driven by pressing the middle cover 2, so that the function of opening and closing by pressing the middle cover 2 is realized.

As shown in fig. 10 and 11, the static contact 74 is limited on the bottom plate 70 by a limiting arc 78, and a static contact buffer spring 75 is provided between the static contact 74 and the bottom plate 70. With the structure, when the middle cover 2 is pressed for the first time, the movable contact 50 on the movable contact piece 5 is connected with the fixed contact 76 on the fixed contact piece 74 to realize circuit communication, when the middle cover 2 is pressed for the second time, the movable contact piece 5 can push the fixed contact piece 74 downwards under the action of the fixed contact piece buffer spring 75 to play a buffer role, and if the fixed contact piece 74 is fixed, the movable contact piece 5 is pushed to be dead, so that the middle cover 2 cannot be pressed again.

In practical applications, the limiting arcs 78 of the present invention effectively prevent the static contact 74 from falling off the bottom plate 70.

More specifically, a first limit cavity 21, a second limit cavity 22 and a third limit cavity 23 are formed on the inner wall of the middle cover 2, plug bushes 51 are respectively arranged in the first limit cavity 21 and the third limit cavity 23, the plug bushes 51 are fixedly connected with the movable contact piece 5, a fixed magnetic ring fixing seat 24 and a coil 25 for fixing a fixed magnetic ring 81 are arranged on one side of the second limit cavity 22, and a through hole for allowing the sliding pin 80 to pass through is formed in the other side of the second limit cavity 22. With this arrangement, the installation of the insert 51, the shear pin 3 and the slide pin assembly 8 is facilitated.

In practical application, the plug bush 51 and the movable contact piece 5 are integrally arranged.

More specifically, the socket housing 1 includes an upper shell 10 and a lower shell 11, the upper shell 10 is fixedly connected with the lower shell 11, and the upper shell 10 is provided with the power-on indicator lamp 4. Adopt such structure setting, when the circuit intercommunication, 4 lamps of circular telegram pilot lamp are bright, and when the circuit disconnection, 4 lamps of circular telegram pilot lamp go out, are convenient for remind the user that safe socket is in what state.

In practical applications, the safety pin 3 is further provided with a locking assembly 33 for locking the safety pin 3 and preventing the safety pin 3 from being pressed. Referring to fig. 18, the locking assembly 33 includes a key (not shown) and a locking pin 331 which is driven by the key to extend to lock the securing pin 3. In practical applications, the lock pin 331 is disposed inside the safety pin 3, and a keyhole is disposed at an upper end portion of the safety pin 3 (a lock body is disposed inside), and after a key is inserted into the keyhole, the lock pin 331 is rotationally driven to extend (an arrow indicates a moving direction in the figure). Specifically, the lock pin 331 extends to the upper side of the mode control board 6 (at this time, the side wall of the second limit cavity 22 needs to be provided with an opening to allow the lock pin 331 to extend), when the safety pin 3 is pressed, the safety pin 3 moves downward together with the lock pin 331, and the lock pin 331 is supported by the upper end portion of the mode control board 6 and cannot move downward, so that the safety pin 3 is locked.

Of course, in other preferred embodiments, a locking hole may be provided on the mode control board 6, and the lock pin 331 is inserted into the locking hole in a protruding manner, and it is also possible to realize that the mode control board 6 restricts the downward movement of the lock pin 331, so that the safety pin 3 is locked and the safety pin 3 cannot be pressed downward.

Through the arrangement mode, for the socket which is installed at a home and has a low horizontal height and is easy to contact, the safety pin 3 can be locked through the key corresponding to the locking assembly 33, so that the safety pin 3 cannot be pressed, the socket cannot be electrified at the moment, and even if a child extends fingers or other objects into the jacks, the risk of electric shock does not exist.

In addition, for the application environment in public places, because of some application requirements (for example, some devices need to be powered on, or sockets need to be reserved for some specific application situations, etc.), some sockets must be arranged in public places. During the use, in order to avoid the risk of electric shock, or reduce the safety risk that non-staff used the socket to exist at will, can lock safety pin 3 through the key that locking Assembly 33 corresponds, make safety pin 3 can not be pressed, the socket can't realize the circular telegram this moment, and non-staff can't use the socket. In practical application, the key corresponding to the socket can be kept by related staff.

In other embodiments, the locking assembly 33 may also be disposed on the middle cap 2 with the key-actuated lock pin 331 extending above the mode control plate 6. In this embodiment, the mode control board 6 prevents the latch 331 from moving downward, so as to prevent the middle cap 2 from being pressed downward (because the middle cap 2 is fixedly connected with the locking assembly 33), and even if the safety pin 3 is pressed, the middle cap 2 cannot be pressed because the locking assembly 33 is not opened, thereby achieving the technical effects of reducing the risk of electric shock and preventing non-working personnel from using the socket.

Of course, in other embodiments, the locking assembly 33 may be mounted on the socket housing 1, as long as the technical effect of driving the lock pin 331 to extend by the key and abutting against the mode control board 6 or the upper shell 10 or the lower shell 11, so that the mode control board 6 or the upper shell 10 or the lower shell 11 prevents the lock pin 331 from moving downwards (i.e. preventing the safety pin 3 or the middle cap 2 from moving downwards) can be achieved.

In practice, the locking assembly 33 may be a conventional lock structure (e.g., a desk drawer lock), or a gear 332 cooperating with a rack 333 as shown in FIG. 19. Specifically, a rotating hole 334 is formed in the gear 332, a lock pin 331 is formed at the end of the rack 333, the gear 332 and the rack 333 are meshed and limited in the safety pin 3 or the middle cover 2, a keyhole (a lock body is arranged inside) is formed in the surface of the safety pin 3 or the middle cover 2, a key is inserted into the keyhole, the end of the key is inserted into the rotating hole 334 matched with the keyhole, the gear 332 is rotated by rotating the key, the rack 333 is driven to move horizontally (the arrow in the figure indicates the moving direction), and the lock pin 331 extends or retracts.

Of course, although the present invention only proposes a specific structure of the locking assembly, according to the disclosure of the present invention, a person skilled in the art may adopt other known locking structures, such as a conventional locking structure (e.g. a drawer locking structure of a desk), as the locking assembly, or adjust the conventional locking structure appropriately according to actual use requirements, so as to lock the safety pin 3 or the middle cover 2. Other known lock structures are not described in detail herein.

The working principle of the invention is as follows: as shown in fig. 12 and 13, in the initial state of the safety socket, the middle cover 2 and the safety pin 3 are both sprung, that is, when the plug of the electrical equipment is not inserted into the jack 20 on the middle cover 2, the electrical coupling switch assembly is in the off state, so the circuit is also broken, the two jacks 20 are not electrified, and even if a child plays with a nail, the nail is carelessly inserted into the jack 20, the two jacks 20 are also not electrified, which plays a safety role for the child. In addition, the middle cap 2 cannot be pressed until the safety pin 3 is not pressed by the safety lock structure. When the plug of the electrical equipment is inserted into the jack 20, the safety pin 3 is pressed (if the locking component 33 needs to be opened), at this time, the safety pin 3 moves downwards and drives the safety pin control rod 31 to move downwards in the control rod control groove 61, the safety pin control rod 31 moves to the lower part (namely, the wider position) of the control rod control groove 61, at this time, the mode control plate 6 can slightly swing, and the safety lock function is unlocked; in the case of unlocking the safety lock function, the middle cover 2 is pressed, the sliding pin 80 is moved downwards by the middle cover 2, and the sliding pin 80 swings the mode control board 6 under the restriction of the sliding rail 60, so that the sliding pin 80 moves from the first state position 600 to the second state position 601 along the sliding rail 60 and is clamped in the second state position 601 (see fig. 13), and the movable contact 50 is contacted with the fixed contact 76, so that the electric connection switch assembly is in a communication state. When the middle cover 2 is pressed again, the sliding pin 80 is driven by the middle cover 2 to move downwards continuously, so that the sliding pin 80 climbs and slides to the third state position 602 from the second state position 601; at this time, the middle cover 2 is released, and due to the elastic force of the middle cover spring 26, the middle cover 2 is pushed to move upwards, and at this time, the sliding pin 80 is driven to move upwards, so that the sliding pin 80 climbs and slides from the third state position 602 to the first state position 600, and returns to the initial position, that is, under the condition that the plug is not unplugged (the safety pin 3 is in a pressing state), disconnection of the electric connection switch assembly is realized.

In practical application, referring to fig. 5, the safety pin 3 is further provided with a reset slot 34, and the reset slot 34 has a structure with a wide top and a narrow bottom; and, referring to fig. 9, the slide pin 80 of the slide pin assembly 8 is provided with a reset step 85 for cooperating with the reset notch 34. in operation, referring to fig. 20, the reset step 85 is disposed in the reset notch 34, and when the safety pin 3 moves upward from the pressed state, the reset step 85 is pressed by the reset notch 34 to disengage the slide pin 80 from the second state 601. This arrangement is mainly used for the following cases: if the middle cover 2 is already in a pressed state, namely the electrical connection switch assembly is in a connected state, the plug is suddenly pulled out, the safety pin 3 is loosened (because the plug does not press the safety pin 3), the safety pin 3 is pushed by the safety pin spring 72 to move upwards, at this time, the reset clamping groove 34 moves upwards relative to the sliding pin assembly 8 along with the safety pin 3, and the structure with the wide upper part and the narrow lower part of the reset clamping groove 34 can press the reset step 85 of the sliding pin assembly 8, so that the sliding pin assembly 8 moves a small distance in the direction away from the mode control plate 6, and the sliding pin 80 is pulled out from the second state position 601; at this moment, the sliding pin assembly 8 cannot block the rotation of the mode control board 6, so the safety pin 3 can be pushed by the safety pin spring 72 to continue moving upwards for resetting, in the process of moving upwards the safety pin 3, the mode control board 6 is rotated and reset through the matching of the safety pin control rod 31 and the control rod control groove 61, meanwhile, the sliding pin assembly 8 can also reset because the mode control board 6 rotates and resets, the sliding pin 80 resets to the first state position 600 (the principle is similar to the action process of temperature protection or overcurrent protection), and as long as the plug is pulled out (namely the pressing of the safety pin 3 is released), the socket can be restored to the safe state of power failure, and the safety of the socket is ensured.

While the embodiments of the present invention have been described, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various modifications without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A safety socket comprising a socket housing (1), characterized in that: a safety lock structure and an electric connection switch assembly are arranged in the socket shell (1), a first switch and a second switch which are respectively arranged corresponding to the safety lock structure and the electric connection switch assembly are arranged on the socket shell (1), and the first switch and the second switch are correspondingly arranged;

the first switch comprises a safety pin (3), the second switch comprises a middle cover (2), a jack (20) arranged corresponding to an electrical equipment plug is arranged on the middle cover (2), the safety pin (3) can be pressed and limited on the middle cover (2), the middle cover (2) can be pressed and limited on the socket shell (1), the safety pin (3) is arranged corresponding to the safety lock structure, and the middle cover (2) is arranged corresponding to the electric connection switch component;

the safety socket is also provided with a locking assembly (33) for locking the safety pin (3) or the middle cover (2);

safety lock structure is including locating inside mode control board (6), bottom plate subassembly (7) and sliding pin subassembly (8) of socket casing (1), mode control board (6) wobbling is spacing on bottom plate (70) of bottom plate subassembly (7), be equipped with slide rail (60) and control lever control groove (61) on mode control board (6), control lever control groove (61) adopt the wide slotted hole structure setting of the little lower part in upper portion, be equipped with spout (30) and safety pin control lever (31) on safety pin (3), safety pin control lever (31) are cooperateed and are worn in control lever control groove (61), sliding pin (80) one end of sliding pin subassembly (8) is located on well lid (2), sliding pin (80) other end passes spout (30) cooperation and inlays in slide rail (60).

2. A safety socket according to claim 1, wherein: the locking assembly (33) comprises a key and a lock pin (331) which is driven by the key to extend to lock the safety pin (3) or the middle cover (2).

3. A safety socket according to claim 1, wherein: be equipped with safety pin spring (72) between safety pin (3) and bottom plate (70), be equipped with spring positioning groove (32) on safety pin (3), be equipped with spring positioning groove two (77) on bottom plate (70), the one end of safety pin spring (72) is positioned in spring positioning groove (32), the other end of safety pin spring (72) is positioned in spring positioning groove two (77), be equipped with well lid spring (26) between inferior valve (11) of well lid (2) and socket shell (1).

4. A safety socket according to claim 1, wherein: be equipped with mode control board spacing groove (71) on bottom plate (70), be equipped with spacing hole (62) on mode control board (6), mode control board (6) lower part cooperation is located in mode control board spacing groove (71) to but through spacer pin (73) wobbling spacing in mode control board spacing groove (71).

5. A safety socket according to claim 1, wherein: the sliding rail (60) adopts a triangular groove structure, three state positions are formed in the sliding rail (60) and connected through a ramp, and the sliding pin (80) can irreversibly slide between the three state positions in sequence under the normal working state of the safety socket.

6. A safety socket according to claim 1, wherein: the sliding pin assembly (8) comprises a sliding pin (80), a fixed magnetic ring (81), a bimetallic strip (82), a limiting ring (83) and a movable magnetic ring (84), the limiting ring (83) and the movable magnetic ring (84) are fixed at one end of the sliding pin (80), the other end of the sliding pin (80) sequentially penetrates through the bimetallic strip (82) and the fixed magnetic ring (81), and a fixed magnetic ring fixing seat (24) corresponding to the fixed magnetic ring (81) and a coil (25) corresponding to the movable magnetic ring (84) are arranged on the middle cover (2).

7. A safety socket according to claim 1, wherein: the electric connection switch assembly comprises a static contact piece (74) arranged on the bottom plate (70) and a movable contact piece (5) arranged on the middle cover (2), wherein a static contact (76) is arranged at the upper part of the static contact piece (74), a wiring terminal (9) of an external power supply wire is arranged at the lower part of the static contact piece (74), a movable contact (50) is arranged on the movable contact piece (5), the movable contact (50) and the static contact (76) are arranged correspondingly, and the movable contact piece (5) is driven to move downwards by pressing the middle cover (2) to be communicated with a circuit of the static contact piece (74).

8. A safety socket according to claim 7, wherein: the static contact piece (74) is limited on the bottom plate (70) through a limiting arc (78), and a static contact piece buffer spring (75) is arranged between the static contact piece (74) and the bottom plate (70).

9. A safety socket according to claim 6, wherein: the inner wall of the middle cover (2) is provided with a first limiting cavity (21), a second limiting cavity (22) and a third limiting cavity (23) in a forming mode, plug bushes (51) are arranged in the first limiting cavity (21) and the third limiting cavity (23) respectively, the plug bushes (51) are fixedly connected with the movable contact piece (5), one side of the second limiting cavity (22) is provided with a fixed magnetic ring fixing seat (24) and a coil (25), and the other side of the second limiting cavity (22) is provided with a through hole through which a sliding pin (80) can pass conveniently.