CN210517204U

CN210517204U - Safety plug

Info

Publication number: CN210517204U
Application number: CN201921898939.9U
Authority: CN
Inventors: 丁银亮; 王涛; 梅晓东; 邹绍琨; 李二斌; 程晓峰
Original assignee: Hefei Sungrow New Energy Technology Co Ltd
Current assignee: Sungrow Renewables Development Co Ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-05-12
Anticipated expiration: 2029-11-05

Abstract

The utility model discloses a safety plug, safety plug includes: a shell with an opening end, a button and a bottom shell; the shell is provided with a first through hole for a cable to pass through and a second through hole, the button is movably connected with the shell through the second through hole, and the bottom shell is matched with the open end of the shell and used for covering the open end of the shell; a third through hole for the insertion pin to pass through is formed in the bottom shell; the bottom shell and the shell form an accommodating cavity; the safety plug realizes the connection or disconnection of the cable and the contact pin in the accommodating cavity through the button. The utility model discloses among the technical scheme, the problem of safe socket to user's safety protection delay when the plug has been solved through the button structure.

Description

Safety plug

Technical Field

The utility model relates to the technical field of plugs, in particular to safety plug.

Background

With the continuous development of electrical equipment, more and more sockets and plugs are used in active areas such as homes and offices. How to provide a safe electrical connection mode to improve the safety performance of the socket and the plug and avoid the safety damage of electricity to personnel and equipment becomes the focus of attention of people. At present, the connection between a user balcony photovoltaic system and a power grid is mainly realized by sequentially connecting a photovoltaic module with an inverter, a plug and a user socket. However, when the plug is pulled out of the socket, the photovoltaic module still generates electricity, so that the plug still carries alternating current, and the risk of electric shock of personnel is easily caused.

In the related art, the islanding protection is mainly performed through a relay in the inverter, but the electronic islanding protection has time delay, so that the user still has electric shock danger at the moment of unplugging the plug.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a safety plug aims at solving the problem that traditional safety socket postpones user's safety protection when the plug.

In order to achieve the above object, the utility model provides a safety plug, safety plug includes:

a housing;

the first electric connector is arranged on the shell and is used for being connected with a socket;

the second electric connecting piece is arranged on the shell and is used for being connected with an electric connecting wire, and the first electric connecting piece and the second electric connecting piece are arranged at intervals; and

the press switch is arranged on the shell and used for controlling the on-off of the first electric connecting piece and the second electric connecting piece.

Further, the push switch includes a third electrical connection and a switch body;

the switch body is arranged on the shell and used for driving the third electric connecting piece to move;

the third electric connecting piece is connected to the inner end of the switch body and is positioned in the shell; the two ends of the third electric connector are respectively connected with the first electric connector and the second electric connector, and

the third electrical connector has a disconnected state separated from the first electrical connector and/or the second electrical connector when the push switch is pushed.

Furthermore, the shell is provided with switch mounting holes, support pieces are arranged in the shell at intervals, and the support pieces are provided with abutting through holes corresponding to the switch mounting holes;

the switch body comprises a key with a lateral convex part, a connecting rod and a spring,

the key is movably arranged in the switch mounting hole, and the lateral convex part of the key is positioned between the shell and the supporting piece;

the connecting rod is positioned in the shell, one end of the connecting rod is connected with the key, and the other end of the connecting rod penetrates through the abutting through hole to be connected with the third electric connector;

the spring is sleeved on the connecting rod and is positioned between the supporting piece and the lateral convex part of the key.

Furthermore, the press switch is a self-locking switch, the self-locking switch includes a first pin and a second pin, the first pin is electrically connected with the first electrical connector, and the second pin is electrically connected with the second electrical connector.

Furthermore, two pairs of the first electric connecting pieces and two pairs of the second electric connecting pieces are arranged, two push switches are arranged, and the two push switches are respectively arranged on two opposite first side walls of the shell;

each push switch is used for controlling the connection and disconnection between the first electric connector and the second electric connector.

Furthermore, the shell is also provided with two second side walls which are respectively arranged at two sides of the two first side walls;

and one of the second side walls is provided with a cable mounting position, and the cable mounting position is used for connecting a power supply connecting wire with the second electric connector.

Further, the second side wall is obliquely arranged.

Furthermore, the safety plug also comprises an adapter plate, the adapter plate is arranged in the shell, and the second electric connector is arranged on the adapter plate; the adapter plate is provided with a third electric connecting piece which is electrically connected with the first electric connecting piece, and the third electric connecting piece is electrically connected with the second electric connecting piece.

Further, the shell comprises a cover plate and a shell body with an opening, and the cover plate is arranged at the opening of the shell body;

the second electric connector and the press switch are both arranged on the shell body;

the first electric connector is arranged on the cover plate.

Further, the safety plug further comprises an arc extinguishing device, wherein the arc extinguishing device is arranged close to the first electric connecting piece and used for extinguishing electric arcs generated by the first electric connecting piece.

Compared with the prior art, the utility model discloses following beneficial effect has been obtained:

the utility model provides a safety plug, safety plug includes: a housing; the first electric connector is arranged on the shell and is used for being connected with a socket; the second electric connecting piece is arranged on the shell and is used for being connected with an electric connecting wire, and the first electric connecting piece and the second electric connecting piece are arranged at intervals; and the press switch is arranged on the shell and used for controlling the on-off of the first electric connector and the second electric connector. The utility model discloses among the technical scheme, through locating pressing down or loosening of press the switch on the casing, realized disconnection or intercommunication between inside first electric connector of this safety plug and the second electric connector. The mechanical power-off is adopted, so that the anti-reflux function (namely the anti-electric-shock function) is realized, and the time delay of the safety protection performance when a user uses the plug can not be caused; in addition, the on/off of the power supply in the socket is realized without depending on an inverter, so that the failure risk of the anti-electric shock function of the socket is zero. And simultaneously, the utility model discloses in first electric connector with the break-make of second electric connector only controls the break-make of the live wire and the zero line of the inside of safety plug. Thus, the utility model discloses a press the switch structure and improved the electricity-proof performance and the security performance of safety socket greatly, simultaneously, owing to do not control the ground wire, reduced mechanical fineness, more be favorable to the industrial production.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 schematic view of an internal structure of an embodiment of the safety plug of the present invention;

fig. 2 is a schematic view of the internal structure of another embodiment of the safety plug of the present invention;

fig. 3 is an exploded view of an embodiment of the safety plug of the present invention;

FIG. 4 is a schematic structural diagram of the self-locking switch;

fig. 5 is a schematic structural diagram of an embodiment of the safety plug of the present invention;

fig. 6 is a schematic structural diagram of another embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Shell body	420	Push-button
110	Support piece	421	Lateral convex part
				120	First side wall	430	Connecting rod
130	Second side wall	440	Spring
				140	Shell body	411	First pin
141	Protective sleeve	412	Second pin
				150	Cover plate	500	Adapter plate
200	First electrical connector	510	Fourth electrical connector
				300	Second electrical connector	600	Arc extinguishing device
400	Push switch	700	Socket with improved structure
				410	Third electrical connector	800	Electrical connection wire

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

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a safety plug is applicable to various electrical equipment to improve its security performance in the use.

Referring to fig. 1, 2 and 6, the present invention provides a safety plug, comprising:

a housing 100;

the first electric connector 200 is arranged on the shell 100, and the first electric connector 200 is used for being connected with a socket 700;

the second electric connector 300 is arranged on the shell 100, the second electric connector 300 is used for being connected with an electric connection wire 800, and the first electric connector 200 and the second electric connector 300 are arranged at intervals; and

the push switch 400 is arranged on the housing 100, and the push switch 400 is used for controlling the on/off of the first electrical connector 200 and the second electrical connector 300.

By last, in the embodiment of the utility model, the theory of operation of safety plug as follows: in the present embodiment, by pressing and releasing the push switch 400, the first electrical connector 200 and the second electrical connector 300 are connected and disconnected inside the housing 100, so as to connect and disconnect the safety plug (i.e. to make the safety plug in the working state and the non-working state). When the safety plug is in the working state, the first electrical connector 200 and the second electrical connector 300 inside the casing 100 are in the on position, so that the safety plug is internally on; thus, when the safety plug is inserted into the socket 700 to connect the electrical appliance to the power grid, the current flow path is: the power supply system comprises a power grid, a socket 700, a first electric connector 200, a second electric connector 300, an electric connecting wire 800 and an electric appliance, so that the power supply of the electric appliance is realized. When the safety plug is in the inactive condition, the first and second

electrical connectors

200, 300 inside the casing 100 are in the open position, so that the safety plug is internally open; thus, when the safety plug is pulled out of the socket 700 to be disconnected from the power grid, the first electric connector 200 is not electrified with alternating current due to the disconnection inside the safety plug, and even if a user accidentally touches the exposed part of the first electric connector 200, no electric shock hazard can occur, so that the safety protection of the user is timely realized.

In this embodiment, in order to isolate the external environment from the internal working environment of the safety plug and improve the safety performance of the safety plug, the housing 100 has an accommodating cavity. The first electrical connector 200 is partially arranged in the accommodating cavity, and the other part of the first electrical connector is exposed to be electrically connected with the socket 700; the second electrical connector 300 is disposed in the accommodating cavity and electrically connected to the electrical connection wire 800. The push switch 400 is arranged to control the connection or disconnection of the first electric connector 200 and the second electric connector 300 in the shell 100, so that the mechanical power failure in the safety plug is realized, the anti-backflow function (namely the anti-electric-shock function) of the safety plug is realized, and the time delay of the safety protection performance when a user uses the plug is avoided; and, because do not rely on the dc-to-ac converter to realize the on/off to the inside power of plug for the failure risk of the anti-electric shock function of plug is zero.

Referring to fig. 1 and 2, further, the push switch 400 includes a third electrical connector 410 and a switch body;

the switch body is arranged on the shell 100 and used for driving the third electric connector 410 to move;

the third electrical connector 410 is connected to the inner end of the switch body and is located in the housing 100; both ends of the third electrical connector 410 are connected to the first electrical connector 200 and the second electrical connector 300, respectively, and the third electrical connector 410 has a disconnected state separated from the first electrical connector 200 and/or the second electrical connector 300 when the push switch 400 is pushed.

In this embodiment, in order to control the disconnection and connection of the first electrical connector 200 and the second electrical connector 300 inside the casing 100 by the push switch 400, a third electrical connector 410 is provided. The third electrical connector 410 is connected to the switch body and can simultaneously connect the first electrical connector 200 and the second electrical connector 300 in the accommodating cavity, so as to realize the communication of the first electrical connector 200 and the second electrical connector 300 inside the shell 100, and enable the third electrical connector 410 to have a communication state; and the first electric connector 200 and the second electric connector 300 positioned in the accommodating cavity can be disconnected at the same time, so that the first electric connector 200 and the second electric connector 300 are disconnected in the shell 100, or the communication with the first electric connector 200 or the second electric connector 300 is disconnected, so that the first electric connector 200 and the second electric connector 300 are disconnected in the shell 100.

Specifically, the housing 100 is provided with a switch mounting hole, the housing 100 is internally provided with supporting pieces 110 at intervals, and the supporting pieces 110 are provided with abutting through holes corresponding to the switch mounting hole;

the switch body includes a button 420 having a lateral protrusion, a connecting rod 430 and a spring 440,

the key 420 is movably mounted in the switch mounting hole, and a lateral convex part of the key 420 is located between the housing 100 and the support 110;

the connecting rod 430 is located in the housing 100, one end of the connecting rod 430 is connected with the key 420, and the other end of the connecting rod 430 passes through the abutting through hole to be connected with the third electrical connector 410;

the spring 440 is sleeved on the connecting rod 430 and located between the supporting member 110 and the lateral protrusion of the button 420. The mounting body is mounted to the housing 100 through the switch mounting hole.

In this embodiment, in order to simplify the structure of the safety plug and save raw materials, a switch mounting hole is provided in the housing 100. In order to reduce the force applied by the user during the process of using the push switch 400 and improve the user experience, a supporting plate is disposed in the accommodating cavity inside the housing 100. In order to provide the push switch 400 with a good restoring force to automatically return to its original position after the completion of the push, the switch body is provided with a button 420, a connecting rod 430, and a spring 440. The key 420 penetrates through the switch mounting hole, is partially located in the accommodating cavity, and is partially located outside the housing 100. A key 420 located outside the housing 100 for pressing by a user; the key 420 located in the receiving cavity portion has a lateral protrusion 421, and a cross-sectional area of the lateral protrusion 421 is larger than a cross-sectional area of the switch mounting hole, so that the key 420 is not pushed to an outside of the housing 100 by a restoring force of the spring 440 in a communication state. Meanwhile, the spring 440 is sleeved outside the connecting rod 430 and is located between the lateral protrusion 421 of the key 420 and the supporting plate; the connecting rod 430 is used for mechanically connecting the key 420 and the third electrical connector 410.

When a user presses the key 420 towards the inside of the casing 100, the connecting rod 430 connected to one end of the key 420 is driven to move towards the central axis of the casing 100, the third electrical connector 410 connected to the other side of the connecting rod 430 is driven to move towards a direction away from the first electrical connector 200 and the second electrical connector 300, so that the first electrical connector 200 and the second electrical connector 300 are disconnected, and at the moment, the spring 440 is in a compressed state due to the pressing force of the user; the push switch 400 is in an off state. When the user releases the button 420, the button 420 returns to the original position due to the restoring force of the spring 440, meanwhile, the connecting rod 430 is driven by the button 420 to return to the original position, the third electrical connector 410 is driven by the connecting rod 430 to return to the communication with the first electrical connector 200 and the second electrical connector 300, and at this time, the spring 440 returns to the original extending state; the push switch 400 is in a connected state.

Referring to fig. 4, in particular, the push switch 400 is a self-locking switch, the self-locking switch includes a first pin 411 and a second pin 412, the first pin 411 is electrically connected to the first electrical connector 200, and the second pin 412 is electrically connected to the second electrical connector 300.

In this embodiment, the push switch 400 is a self-locking switch, and the self-locking switch includes a pin assembly and a switch body. The pin assembly includes a first pin 411 and a second pin 412. The switch body is provided with a key 420 part, the key 420 part is arranged on the shell 100 through the switch mounting hole and used for controlling the on-off of the power supply in the switch body by a user, so that the on-off of the current between the first pin 411 and the second pin 412 is realized, and the on-off of the current between the first electric connector 200 electrically connected with the first pin 411 and the second electric connector 300 electrically connected with the second pin 412 is controlled.

Referring to fig. 1, 2 and 5, further, two pairs of the first electrical connector 200 and the second electrical connector 300 are provided, two push switches 400 are provided, and the two push switches 400 are respectively provided on two opposite first sidewalls 120 of the housing 100;

each of the push switches 400 is used for controlling the on/off between a pair of the first electrical connector 200 and the second electrical connector 300.

In this embodiment, in order to simplify the structure of the control mechanism, two pairs of the first electrical connector 200 and the second electrical connector 300 are provided, and are respectively used for controlling the on/off of the live wire and the neutral wire. This eliminates the need for on-off control of the ground line. Meanwhile, in order to fit the usage habit of the user, two push switches 400 are disposed at opposite sides of the housing 100. It should be understood that two switch mounting holes through which the push switches 400 pass are provided, and are provided in one-to-one correspondence with the push switches 400.

Specifically, the housing 100 further has two second sidewalls 130 disposed on two sides of the two first sidewalls 120;

a cable installation position is arranged on one of the second side walls 130, and the cable installation position is used for connecting the power supply connection wire 800 with the second electrical connector 300.

In this embodiment, in order to actively guide a user to use the push switch 400 when plugging and unplugging the safety plug, and further enhance the safety performance of the safety plug, a cable installation position for passing the power connection line 800 is disposed on the second sidewall 130. Thus, when the user unplugs the plug, the user cannot unplug the plug through the electrical connection wire 800, and can only unplug the safety plug through the housing 100. Specifically, in the present embodiment, the second side wall 130 is disposed obliquely. Thus, when the user unplugs the plug, the user can only unplug the safety plug by the push switch 400.

Referring to fig. 2 and 3, further, the safety plug further includes an interposer 500, the interposer 500 is disposed in the housing 100, and the second electrical connector 300 is disposed on the interposer 500; the interposer 500 has a third electrical connector 410 for electrically connecting with the first electrical connector 200, the third electrical connector 410 being electrically connected with the second electrical connector 300.

In this embodiment, in order to enhance the safety of the internal circuit of the safety plug, an adapter board 500 is disposed inside the safety plug housing 100. The interposer 500 is used to electrically connect the first electrical connector 200 and the electrical connection wire 800. The interposer 500 includes a fourth electrical connector 510, a connection board 520, and a second electrical connector 300. The connecting plate 520 has different directions in the accommodating cavity.

In one embodiment, in order to reduce the wires inside the housing 100, improve the cleanliness of the interior of the housing 100, and reduce the occurrence of the leakage phenomenon, the connecting plate 520 is disposed parallel to the bottom plate of the housing 100. Meanwhile, the fourth electric connector 510 is arranged on the side of the connecting plate 520 close to the first electric connector 200; the second electrical connector 300 is arranged at the opposite side of the connecting plate 520 where the fourth electrical connector 510 is arranged, and the fourth electrical connector 510 and the second electrical connector 300 are electrically connected. Optionally, the fourth electrical connector 510 and the second electrical connector 300 may be fixed by a screw connection.

Specifically, the housing 100 is provided with a mounting post, and the adapter plate 500 is provided with a mounting hole, which is adapted to the mounting post. The interposer 500 is connected to the housing 100 through the mounting posts. Optionally, in order to enhance the stress of the adaptor plate 500 when the user uses the safety plug, the adaptor plate 500 is fixedly connected to the housing 100. The mounting hole is provided with 2 groups at least, just the erection column with the mounting hole one-to-one sets up.

Specifically, to save cost, the third electrical connector 410 is a spring plate including a plurality of conductive clamping fingers enclosing a resilient conductive space for the first electrical connector 200 to be inserted.

Referring to fig. 3, further, the housing 100 includes a cover plate 150 and a housing body 140 having an opening, wherein the cover plate 150 is disposed at the opening of the housing body 140;

the second electrical connector 300 and the push switch 400 are both disposed on the housing body 140;

the first electrical connector 200 is disposed on the cover plate 150.

In the present embodiment, the first and second electrodes are,

in one embodiment, a sheath 141 is further disposed on the housing body 140. The sheath 141 serves to reduce a leakage phenomenon at a connection of the electrical connection wire 800 and the case body 140.

Referring to fig. 1, further, the safety plug further includes an arc extinguishing device 600, wherein the arc extinguishing device 600 is disposed near the first electrical connector 200 and is used for extinguishing an arc generated by the first electrical connector 200.

In this embodiment, in order to further extinguish an arc generated when the first electrical connector 200 is disconnected from the third electrical connector 410, an arc extinguishing device 600 is disposed on the cover plate 150. The arc extinguishing device 600 is disposed in the accommodating cavity. Specifically, a plurality of first electrical connectors 200 are provided, a plurality of third electrical connectors 410 and arc extinguishing devices 600 are provided, and the third electrical connectors 410 and the arc extinguishing devices 600 are provided in one-to-one correspondence with the first electrical connectors 200. It should be understood that the arc extinguishing device 600 is a commercially available arc extinguishing device 600, and will not be described in detail herein.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. A safety plug, characterized in that it comprises:

a housing;

2. The safety plug of claim 1, wherein the push switch includes a third electrical connection and a switch body;

the third electric connecting piece is connected to the inner end of the switch body and is positioned in the shell; both ends of the third electrical connector are connected to the first electrical connector and the second electrical connector, respectively, and the third electrical connector has a disconnected state separated from the first electrical connector and/or the second electrical connector when the push switch is pushed.

3. The safety plug of claim 2, wherein the housing is provided with switch mounting holes, the housing is internally provided with support members at intervals, and the support members are provided with abutting through holes corresponding to the switch mounting holes;

4. The security plug of claim 1, wherein the push switch is a self-locking switch including a first pin electrically connected to the first electrical connector and a second pin electrically connected to the second electrical connector.

5. The safety plug of claim 1, wherein there are two pairs of said first and second electrical connectors, and two of said push switches, said two push switches being disposed on opposite first sidewalls of said housing;

6. The safety plug of claim 5 wherein said housing further has two second side walls disposed on either side of said first side walls;

7. The safety plug of claim 6 wherein said second side wall is obliquely disposed.

8. The safety plug of claim 1 further comprising an interposer, said interposer being disposed within said housing, said second electrical connector being disposed on said interposer; the adapter plate is provided with a third electric connecting piece which is electrically connected with the first electric connecting piece, and the third electric connecting piece is electrically connected with the second electric connecting piece.

9. The safety plug of claim 1, wherein the housing includes a cover plate and a housing body having an opening, the cover plate being disposed at the opening of the housing body;

the first electric connector is arranged on the cover plate.

10. The safety plug of claim 1, further comprising an arc extinguisher disposed proximate to the first electrical connector for extinguishing an arc generated by the first electrical connector.