CN116937223A

CN116937223A - Socket

Info

Publication number: CN116937223A
Application number: CN202210324614.XA
Authority: CN
Inventors: 单福华; 张大海
Original assignee: Schneider Electric Industries SAS
Current assignee: Schneider Electric Industries SAS
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2023-10-24
Also published as: GB2619151A; GB202304557D0

Abstract

Embodiments of the present disclosure relate to a socket. The socket includes: a mounting panel (100) including an E-pole jack, an L-pole jack, and an N-pole jack adapted to receive a plug; the LN pole protection door is suitable for covering the L pole jack and the N pole jack when the plug is not inserted; the protection door limiting mechanism is configured to limit movement of the LN pole protection door when the E pole insertion hole is not inserted and to release the limitation of movement of the LN pole protection door when the E pole insertion hole is inserted. In this way, by providing the protection door limit mechanism, the safety when the plug is not correctly inserted can be ensured.

Description

Socket

Technical Field

Embodiments of the present disclosure relate generally to the electrical arts, and more particularly, to a socket.

Background

In the electrical field, in order to improve safety during use of the socket, it is specified in the relevant standards: the receptacle with the protective door is structured such that the electrical components are not accessible when the plug is not inserted, and the receptacle is inserted into the receptacle with the prescribed probe. Conventionally, various sockets cannot effectively prevent accidents such as electric shock and the like caused by the insertion of metal conductive parts, so that serious potential safety hazards exist in the use process.

Disclosure of Invention

Embodiments of the present disclosure provide a socket that is intended to overcome at least the problems with prior art sockets.

Embodiments of the present disclosure relate to a socket. The socket includes: the mounting panel comprises an E-pole jack, an L-pole jack and an N-pole jack and is suitable for receiving a plug; the LN pole protection door is suitable for covering the L pole jack and the N pole jack when the plug is not inserted; the protection door limiting mechanism is configured to limit movement of the LN pole protection door when the E pole insertion hole is not inserted and to release the limitation of movement of the LN pole protection door when the E pole insertion hole is inserted.

According to the embodiments of the present disclosure, on the one hand, when the E-pole jack is not inserted, i.e., when the E-pole pin of, for example, a plug is not inserted into the E-pole jack, the movement of the LN-pole protection gate is restricted by the protection gate opening mechanism, and thus cannot be completely removed from under the L-pole jack and the N-pole jack, blocking the LN-pole pin from being inserted to release the contact; on the other hand, when the E-pole pin is inserted into the E-pole jack, the E-pole pin can move or deform the protective door limiting mechanism to release the movement of the LN-pole protective door, so that the L-pole and N-pole pins are not blocked by the LN-pole protective door when the L-pole and N-pole pins are subsequently inserted. In such an embodiment, by providing a protective gate stop mechanism, it is possible to ensure that the electrical circuit where the hot or neutral line is located cannot be contacted from the L-pole jack and the N-pole jack when the E-pole pin is not inserted.

In some embodiments, the protective door opening mechanism includes a stop arm, wherein the stop arm is configured to deform when the E-pole receptacle is inserted such that the stop arm releases the limit on the movement of the LN pole protective door. In such an embodiment, when the E-pole pin is inserted into the E-pole receptacle, the E-pole pin acts on the spacing arm, deforming the spacing arm to contact the limit. For example, the limiting arm deflects after deformation and moves away from a preset movement path of the LN pole protective door, so that the LN pole protective door can move on the preset movement path to release the covers of the L pole jack and the N pole jack.

In some embodiments, the retention arm includes a pair of resilient arms formed in an open shape adapted to receive an E-pole pin of a plug. In such an embodiment, by forming the opening shape corresponding to the E-pole insertion hole between the pair of elastic arms, the E-pole pin can be smoothly inserted into the E-pole insertion hole and thus into the opening. In some embodiments, the pair of resilient arms are integrally formed from sheet metal.

In some embodiments, the stop arm includes a protrusion adapted to abut the E-pole pin when the E-pole pin is inserted. In such an embodiment, the E-pole pin contacts the tab during insertion and deforms and moves the stop arm by action on the tab, thereby contacting the limit of movement of the LN pole guard gate.

In some embodiments, the spacing arm includes a hem extending outwardly from the opening. In such an embodiment, the strength of the spacing arm is increased by providing a fold extending towards the outside. In some embodiments, the folds are aligned with the E-pole receptacles. Therefore, the E-pole pin can be used for receiving the E-pole pin, so that the E-pole pin is smoother to insert.

In some embodiments, the spacing arm includes a protrusion and the LN pole protection door includes an engagement slot adapted to engage with the protrusion, the engagement slot engaging with the protrusion when the E pole pin is inserted into the E pole receptacle and disengaging with the protrusion when the E pole pin is not inserted into the E pole receptacle. In such an embodiment, when the E-pole pin is not inserted into the E-pole receptacle, the restriction of the movement of the LN-pole protection door is achieved by the engagement of the projection with the coupling groove.

In some embodiments, the protrusion includes a hook portion, and the engagement groove includes a recess disposed opposite the hook portion such that the recess and the hook portion at least partially overlap in the engagement direction. In such an embodiment, the engagement of the protection door limiting mechanism with the protection door can be made more secure by the recess being tightly engaged with the hook portion.

In some embodiments, the protrusions include reinforcing ribs adapted to increase their strength. In such an embodiment, the service life of the protective door stop mechanism can be increased by providing the reinforcing ribs on the protrusions.

In some embodiments, the receptacle further comprises a base for supporting the LN pole protection door, the base comprising a protruding shaft, and the LN pole protection door comprising a hole adapted to receive the protruding shaft, wherein the LN pole protection door is configured to move along the protruding shaft when the L pole pin and the N pole pin are inserted into the L pole receptacle and the N pole receptacle. In such an embodiment, the LN pole protective door is enabled to move over the pedestal by the shaft hole engagement.

In some embodiments, the base includes a stop located on a side of the protruding shaft, wherein the LN pole protection door is configured to rotate about the axis of the protruding shaft and be stopped when only one of the L pole pin and the N pole pin is inserted. In such an embodiment, when only one pin is inserted, the LN pole piece protection door rotates to one side due to uneven stress, and is stopped by the stopper on the base at this time, so that the LN pole piece protection door cannot move continuously, and therefore the L and N pole insertion holes are still covered, and a safety protection effect is achieved.

In some embodiments, the LN pole guard gate includes a cover surface for covering the slopes of the L pole jack and the N pole jack, respectively, the slope height of the cover surface increasing as the guard gate limiting mechanism is approached such that the LN pole guard gate moves away from the guard gate limiting mechanism as the LN pole pin is inserted into the L pole jack and the N pole jack. In such an embodiment, by providing a cover surface that is inclined toward the LN pole shutter, the L and N pole pins act on the cover surface and urge the LN pole shutter to move in a direction away from the shutter stop mechanism when inserted. Thus, the movement of the LN pole shutter does not affect the structure inside the receptacle.

In some embodiments, the LN pole protection door includes a cover surface for covering the slopes of the L pole jack and the N pole jack, respectively, the slope height of the cover surface decreasing as the protection door opening mechanism is approached such that the LN pole protection door moves toward the protection door limiting mechanism when the LN pole pin is inserted into the L pole jack and the N pole jack. In such an embodiment, by providing the cover surface inclined away from the LN pole shutter, the L and N pole pins act on the cover surface and urge the LN pole shutter to move in a direction toward the shutter stop mechanism when inserted. Thus, a special movement space for the LN pole shutter is not required, thereby enabling the socket to be more compact.

In some embodiments, the stop arm includes a stop configured to abut the LN pole guard gate when the E-pole pin of the plug is not inserted into the E-pole receptacle and to move in response to deformation of the guard gate stop mechanism to allow the LN pole guard gate to move toward the guard gate stop mechanism when the E-pole pin of the plug is inserted into the E-pole receptacle. In such an embodiment, when the E-pole pin is inserted, the stop arm is deformed to move, so as to drive the stop located on the stop arm to move away from the predetermined movement path of the LN pole protection door, so that the LN pole protection door can release the cover of the LN pole jack when the L and N pole pins are inserted.

In some embodiments, the stop is formed as a sheet structure and extends at an angle relative to the body of the spacing arm. In such embodiments, by forming the stop as a sheet structure angled relative to the body of the spacing arm, the stop can be formed to a larger opening after the deformation movement of the spacing arm occurs to facilitate movement of the LN pole guard gate toward the guard gate opening mechanism.

According to the embodiment of the disclosure, the safety of the socket can be effectively improved by arranging the limit mechanism for the LN pole protection door.

Drawings

The above and other objects, features and advantages of embodiments of the present disclosure will become more readily apparent from the following detailed description with reference to the accompanying drawings. Embodiments of the present disclosure will now be described, by way of example and not limitation, in the figures of the accompanying drawings, in which:

fig. 1 shows a schematic view of the exterior of a socket according to an exemplary embodiment of the present disclosure;

FIGS. 2A and 2B respectively show schematic views of the interior of a receptacle according to an exemplary embodiment of the present disclosure;

FIG. 3 shows a schematic view of an LN pole protection door in a socket in accordance with an exemplary embodiment of the present disclosure;

fig. 4 shows a schematic view of a protective door stop in a socket according to an exemplary embodiment of the present disclosure;

FIGS. 5A and 5B are schematic diagrams illustrating different states of a receptacle during correct plug insertion according to an exemplary embodiment of the present disclosure;

FIG. 6 shows a schematic diagram of a receptacle with only L and N pole pins inserted, according to an exemplary embodiment of the present disclosure;

FIG. 7 shows a schematic diagram of a receptacle with only E and N pole pins inserted, according to an exemplary embodiment of the present disclosure;

FIG. 8 shows a schematic view of an LN pole protection door in a socket in accordance with other exemplary embodiments of the disclosure;

fig. 9 shows a schematic view of a protective door stop in a socket according to other exemplary embodiments of the present disclosure

Fig. 10 shows a schematic view of a receptacle without a plug inserted according to other exemplary embodiments of the present disclosure; and

fig. 11 shows a schematic diagram of a receptacle upon insertion of a plug according to other exemplary embodiments of the present disclosure.

Detailed Description

The principles of the present disclosure will now be described with reference to various exemplary embodiments shown in the drawings. It should be understood that these embodiments are merely provided to enable those skilled in the art to better understand and further practice the present disclosure and are not intended to limit the scope of the present disclosure in any way. It should be noted that similar or identical reference numerals may be used, where possible, in the figures and similar or identical reference numerals may designate similar or identical functions. Those skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

As used herein, the term "comprising" and variants thereof are to be construed as meaning open-ended terms including, but not limited to. The term "based on" will be read as "based at least in part on". The terms "one embodiment" and "an embodiment" should be understood as "at least one embodiment". The term "another embodiment" should be understood as "at least one other embodiment". The terms "first," "second," and the like, may refer to different or the same object. Other explicit and implicit definitions may be included below. Unless the context clearly indicates otherwise, the definition of terms is consistent throughout the specification.

It should be understood that the receptacle described in this disclosure may be any receptacle that includes a three-hole receptacle module, such as a three-hole receptacle, a five-hole receptacle, etc., and may also be any power strip that includes a three-hole receptacle module. The present disclosure is not intended to be so limited.

Embodiments of the present disclosure provide a socket capable of providing effective safety protection to solve the above-described problems. According to the embodiment of the present disclosure, when the E-pole pin of the plug is not inserted into the E-pole insertion hole, the movement of the LN-pole protection door is restricted by the protection door restricting mechanism and cannot be completely removed from under the L-pole insertion hole and the N-pole insertion hole, thereby blocking the complete insertion of the L-pole and N-pole pins. Through setting up protection gate stop gear, can ensure when E utmost point contact pin did not insert, can't follow L utmost point jack and N utmost point jack contact live wire or the circuit that zero line was located.

The structure of a socket according to an exemplary embodiment of the present disclosure and the principle of providing safety protection will be described below with reference to fig. 1 to 7.

Fig. 1 shows a schematic view of the exterior of a socket according to one exemplary embodiment of the present disclosure. As shown in fig. 1, the receptacle includes a mounting panel 100. The mounting panel 100 includes an E-pole jack 110, an L-pole jack 120, and an N-pole jack 130 adapted to receive a plug. Also visible in fig. 1 are the portions of the guard gate stop mechanism 300 below the E-pole insertion holes, and the cover faces of the LN pole guard gate 200 below the L-pole insertion holes 120 and N-pole insertion holes 130, respectively. The structure of the interior of the receptacle when no plug is inserted will be described in detail below with reference to fig. 2A and 2B.

Fig. 2A illustrates a schematic diagram of an internal structure of a socket according to an exemplary embodiment of the present disclosure, and fig. 2B illustrates a top view of the socket in fig. 2A. As shown in fig. 2A, the receptacle further includes a substrate 400. An LN pole protection door 200 and a protection door stopper mechanism 300 for restricting the movement thereof are provided on the base plate 400. The base 400 includes a protruding shaft 410. The LN pole protection door 200 includes a hole 270 adapted to receive the protruding shaft 410. The LN pole protective door 200 is allowed to move along the protruding shaft 410 on the base 400 when the LN pole pin and the N pole pin are inserted by the engagement of the hole 270 of the protruding shaft 410. In order to prevent the LN electrode protection door 200 from being pushed away by the L electrode pin and the N electrode pin in the case where the plug is not inserted correctly, for example, in the case where the E electrode pin is not inserted but only the L electrode pin and the N electrode pin are inserted, the protection door stopper mechanism 300 is further provided on the base 400. The protection door limiting mechanism 300 is configured to limit the movement of the LN pole protection door 200 when the E-pole jack 110 is not inserted, and to release the limitation of the movement of the LN pole protection door 200 when the E-pole jack 110 is inserted, to ensure that the LN pole protection door 200 can provide protection against the L and N pole contacts being contacted in the event that the plug is not inserted properly.

The base 400 also includes stops 420, 430 located on the sides of the protruding shaft 410. The LN pole protection door 200 is configured to rotate around the axis of the protruding shaft 410 and be stopped by the stoppers 420, 430 when only one of the L pole pin and the N pole pin is inserted.

The structure of the LN pole protection door 200 and the protection door stop mechanism 300 will be described in detail below with reference to fig. 3 and 4, respectively.

Fig. 3 shows a perspective physical view of the LN pole protection gate 200 in the outlet in fig. 2A. As shown in fig. 3, the LN pole protection door 200 includes a main body 250. A hole 270 is opened at the bottom surface of the body 250 to form a guide groove having an arc surface. The LN pole protection door 200 is movably provided on the base 400 by the engagement of the hole 270 with the protruding shaft 410. An engagement portion for engaging with the protective door stopper mechanism 300 is provided at one end of the main body 250. Engagement grooves 230, 240 adapted to engage with the protrusions 322, 332 are provided on both sides of the engagement portion, respectively. On both sides of the other end of the main body 250 are provided an inclined cover surface 210 for covering the L-pole insertion hole 120 and an inclined cover surface 220 for covering the N-pole insertion hole 130. The direction of inclination of the cover faces 210, 220 can determine the direction of movement of the LN pole protection gate 200. For example, in the embodiment shown in fig. 3, the inclined height of the cover faces 210, 220 increases as they approach the protective door stop 300, i.e. the cover faces 210, 220 face the protective door stop 300. In this arrangement, the L and N pole pins, when inserted into the L and N pole receptacles, will act on the cover surfaces 210, 220 and push the LN pole shutter 200 to move away from the shutter stop mechanism 300.

It should be appreciated that the cover surface described herein may be a sloped planar surface or an arcuate surface, which may be any shape surface that is pushed by a pin to move the LN pole protection door 200 away from the protection door stop mechanism 300.

In the illustrated embodiment, since the LN electrode protection door 200 is away from the protection door stop mechanism 300 when pushed, in order to improve the degree of stability of the engagement of the LN electrode protection door 200 with the protection door stop mechanism 300, the inner walls of the engagement grooves 230, 240 facing the protection door stop mechanism 300 and the inner walls facing the outside form an angle of less than 90 °, so that the recesses 231, 241 facing the protection door stop mechanism 300 are formed so that the engagement of the protrusions 322, 332 with the engagement grooves 230, 240 is not easily released.

A cavity 260 is also provided in the main body 250, and a return spring is provided in the cavity 260. The return spring has one end connected to the main body 250 and the other end connected to the base 400 so that the LN pole protection door 200 can return to a position covering the L pole insertion hole 120 and the N pole insertion hole 130 by the return spring when the L and N pole pins are pulled out.

In this embodiment, one end of the guard gate stop mechanism 300 is fixed to the base contact 400 and the other end engages the LN pole guard gate 200 to prevent it from moving away from the guard gate stop mechanism 300, thereby preventing the L and N pole pins from contacting the corresponding L and N pole contacts. The reed for grounding is provided on the protection door stop mechanism 300, so the protection door stop mechanism 300 is also used as an E-pole contact at the same time.

Fig. 4 shows a schematic view of a protective door stop 300 in a socket according to an exemplary embodiment of the present disclosure. As shown in fig. 4, the protective door stopper 300 includes a stopper arm 310. The retaining arm 310 includes a pair of resilient arms 320, 330. The elastic arms 320 and 330 are coupled to both ends of the connection arm 370, respectively. The resilient arms 320, 330 are able to pivot about the connection with the connection arm 370 when pushed by the E-pole pin. It should be understood herein that the pair of resilient arms 320, 330 may be structurally symmetrical or structurally identical.

Formed between the pair of resilient arms 320, 330 is an opening shape 340 adapted to receive an E-pole pin. The spacing arm 310 further includes protrusions 350, 360, the protrusions 350, 360 being adapted to abut the E-pole pin when the E-pole pin is inserted into the E-pole receptacle 110, i.e., into the opening shape 340. In the embodiment shown in fig. 4, protrusions 350, 360 are provided in sections of the pair of resilient arms 320, 330, respectively, corresponding to the E-pole receptacle 110. The protrusions 350, 360 protrude relative to each other so as to preferentially contact the protrusions 350, 360 when the E-pole pin is inserted, and push the elastic arms 320, 330 to separate them to both sides, respectively. Thereafter, the protrusions 350, 360 are always abutted against the side of the E-pole pin due to the elasticity of the elastic arms 320, 330.

The spacing arm 310 further includes protrusions 322, 332 adapted to engage the engagement slots 230, 240. The protrusions 322, 332 include hook portions 323, 333 hooked back inward from the end portions to form a tight fit with the recesses 231, 241 of the LN pole protection door so that the engagement therebetween is not easily released.

The pair of resilient arms 320, 330 of the stopper arm 310 further includes flaps 321, 331 protruding outwardly from the opening. The folds 321, 331 together form a guide structure open towards the E-pole receptacle adapted to receive an E-pole pin, and at the same time also increase the strength of the resilient arms 320, 330. Similarly, the protrusions 322, 332 may also include reinforcing ribs 324, 334 adapted to enhance their strength. In the illustrated embodiment, the ribs 324, 334 are also configured as flaps extending outwardly from the opening.

Returning to fig. 2B, fig. 2B shows a schematic top view of the interior of the receptacle of fig. 2A. As shown in fig. 2B, the two resilient arms 320, 330 are symmetrical with respect to the center. The protrusions 350, 360 of the resilient arms 320, 330 protrude oppositely such that a tapered gap is formed between the resilient arms 320, 330. Projections 322, 332 are formed at one ends of the elastic arms 320, 330 near the LN pole protection door 200, and hook portions 323, 333 hooked back inward are formed at the ends of the projections 322, 332. The hook portions 323, 333 are received in the recesses 231, 241, respectively, of the LN pole protection door 200. The inner side walls of the hooks 323, 333 are closely abutted against the walls of the recesses 231, 241, thereby forming a firm engagement.

The safety protection mechanism of the socket according to the embodiment of the present disclosure will be described in detail below with reference to fig. 5A to 7.

Fig. 5A shows a schematic diagram of a receptacle when an E-pole pin 10 is inserted according to one exemplary embodiment of the present disclosure. As shown in fig. 5, in this example state, the E-pole pin 10 is inserted into the E-pole insertion hole 110 (not shown) and partially inserted between the elastic arms 310, 320 to push the elastic arms 310, 320 to both sides by the action with the protrusions 350, 360, respectively, so that the protrusions 322, 332 are removed from the engagement grooves 230, 240 of the LN pole protection door 200, thereby removing the restriction on the LN pole protection door 200 so that it can move along the protruding shaft 410.

Fig. 5B shows a schematic of the receptacle in fig. 5A with the L-pole pin 20 and the N-pole pin 30 inserted thereafter. As discussed with respect to fig. 5A, the limit of the movement of the LN pole protection door 200 by the protection door limiter mechanism 300 has been released. As shown in fig. 5B, the L-pole pin 20 and the N-pole pin 30 are inserted accordingly, and the LN-pole protection door 200 is pushed to move in a direction away from the protection door stopper mechanism 300, so that the L-pole pin 20 and the N-pole pin 30 can be completely inserted into and contact with the L-pole contact and the N-pole contact provided on the base 400 while completing the circuit.

It should be understood that by providing the distance of the LN pole protection door 200 and the protection door stop mechanism 300 with respect to the mounting panel 100, it is possible to ensure that: when the plug is inserted, the E-pole pin is brought into contact with the protection door stopper 300 and into contact with the restriction of the movement of the LN pole protection door 200 before the L-pole pin and the N-pole pin are brought into contact with the LN pole protection door 200.

Fig. 6 shows a schematic diagram of a receptacle with only L-pole pin 20 and N-pole pin insert 30, according to one exemplary embodiment of the present disclosure. As shown in fig. 6, since the E-pole insertion hole 110 is not inserted, the protection door stopper mechanism 300 at this time maintains the restriction of the movement of the LN-pole protection door 200. When the L-pole pin 20 and the N-pole pin insert 30 attempt to push the LN-pole protection door 200, the LN-pole protection door 200 is not pushed open due to the limited movement, thereby maintaining shielding of the L-pole jack 120 and the N-pole jack 130. Therefore, when the plug is not inserted correctly, the L-pole contact connected with the live wire and the N-pole contact connected with the zero wire are not contacted.

Fig. 7 shows a schematic diagram of a receptacle when only the E-pole pin 10 and the N-pole pin 30 are inserted according to an exemplary embodiment of the present disclosure. As shown in fig. 7, the E-pole pin 10 is inserted into the E-pole insertion hole 110, thereby causing the protective door stopper mechanism 300 to release the restriction on the movement of the LN-pole protective door 200. However, when the N-pole pin insertion 30 tries to push the LN-pole protection door 200, the LN-pole protection door 200 rotates to one side around the axis of the protruding shaft 410 due to uneven stress. Meanwhile, the LN electrode protection door 200 also has a tendency to move in a direction away from the protection door stopper mechanism 300 due to the pushing force of the N electrode pin 30. However, the LN pole protection door 200 is stopped by the stopper 430 so that it cannot move. Therefore, when the plug is not inserted correctly, the L-pole contact connected with the live wire and the N-pole contact connected with the zero wire are not contacted.

It should be appreciated that although in the embodiments described with respect to fig. 1 to 7, the LN pole protection door 200 is pushed away from the protection door limiting mechanism 300, by disposing the inclined covering surface away from the protection door limiting mechanism 300, the LN pole protection door 200 can be pushed closer to the protection door limiting mechanism 300. In the case where the LN pole protection door 200 is pushed to approach the protection door stopper mechanism 300, for example, by adaptively adjusting the direction of the protrusion or the hook portion, a solution to improve the safety of the socket as previously discussed can be achieved. The present disclosure is not intended to be so limited. An embodiment of approaching the protective door limit mechanism when the LN pole protective door is pushed will be described in detail below with reference to fig. 8 to 11.

Fig. 8 shows a schematic diagram of an LN pole protection door 200 in a socket according to other exemplary embodiments of the present disclosure. To avoid redundancy, the same parts as in the embodiment shown in fig. 3 are not described in detail here. As shown in fig. 8, the LN pole protection door 200 includes a main body 250. A rigid boss 280 is provided at one end of the body 250 facing the protection door limiting mechanism 300. The boss 280 has an end face facing the protection door stop mechanism 300 for abutment against the stop of the protection door stop mechanism 300. The inclined heights of the cover surfaces 210, 220 at the main body 250 decrease as approaching the guard gate stopper mechanism 300 so that the LN electrode guard gate 200 moves toward the guard gate stopper mechanism 300 when the L electrode pin 20 and the N electrode pin 30 are inserted into the L electrode insertion hole 120 and the N electrode insertion hole 130.

Fig. 9 shows a schematic view of a protective door stop 300 in a socket according to other exemplary embodiments of the present disclosure. As shown in fig. 9, the protective door stopper 300 includes a stopper arm 310. The retaining arm 310 includes a pair of resilient arms 320, 330. In contrast to the embodiment shown in fig. 4, stops 325, 335 are provided at the ends of the resilient arms 320, 330 near the LN pole protection door 200, respectively. The stops 325, 335 are formed in a sheet structure and extend at an angle relative to the resilient arms of the check arm 310. In the illustrated embodiment, the resilient arms 320, 330 extend from the ends of the connecting arm 370 in a direction toward each other, and form the protrusions 350, 360 at positions where the spacing is smallest. The stops 325, 335 extend from the tabs 350, 360 in a direction parallel to each other, forming an angle with the resilient arms 320, 330.

Fig. 10 shows a schematic view of a receptacle without a plug inserted according to other exemplary embodiments of the present disclosure. As shown in fig. 10, the LN pole protection door 200 is provided on the protruding shaft 410 of the base plate 400 through a hole at the bottom. The base 400 is further provided with a protective door stopper 300. When the E-pole insertion hole 110 is not inserted, the stoppers 325, 335 of the protection door stopper mechanism 300 abut against the end surfaces of the boss 280 of the LN pole protection door 200, thereby restricting the movement of the LN pole protection door 200. In this embodiment, the stoppers 420, 430 on the side of the protruding shaft 410 are located between the LN pole protection door 200 and the protection door stop mechanism 300, and are configured to stop the LN pole protection door 200 from further approaching the protection door stop mechanism 300 when only one of the L pole pin and the N pole pin is inserted.

Fig. 11 shows a schematic diagram of a receptacle upon insertion of a plug according to other exemplary embodiments of the present disclosure. As shown in fig. 11, since the E-pole pin 10 of the plug is inserted into the E-pole insertion hole 110, the elastic arms 320, 330 are pushed to both sides. The stoppers 325, 335 simultaneously move to both sides in response to the deformation of the elastic arms 320, 330 and form an open space due to the angle between the stoppers and the elastic arms, thereby forming a passage between the stoppers 325, 335 to allow the LN pole protection door 200 to move toward the protection door stop mechanism 300. At this time, the L-pole pin 20 and the N-pole pin 30 act on the shielding surfaces 210, 220, pushing the LN-pole protection door 200 toward the protection door stopper mechanism 300, and the L-pole insertion hole and the N-pole insertion hole are not covered any more, so that the L-pole pin 20 and the N-pole pin 30 can be fully inserted to communicate with the circuit.

It should be understood that the description of the components in the embodiment shown in fig. 2A to 7 applies equally to the same components in the embodiment shown in fig. 8 to 11.

In summary, the LN pole protection door will not be removed as long as the plug with three pins is not properly inserted into the jack, thereby ensuring the safety of the socket.

Although claims have been formulated in this application to particular combinations of features, it should be understood that the scope of the disclosure also includes any novel feature or any novel combination of features disclosed herein either explicitly or implicitly or any generalisation thereof, whether or not it relates to the same in any claim as presently claimed.

Claims

1. A socket, comprising:

a mounting panel (100) including an E-pole jack (110), an L-pole jack (120), and an N-pole jack (130) adapted to receive a plug;

-an LN pole protection door (200) adapted to cover said L pole jack (120) and said N pole jack (130) when said plug is not inserted;

a protection door limit mechanism (300) configured to restrict movement of the LN pole protection door (200) when the E pole insertion hole (110) is not inserted and to release the restriction of movement of the LN pole protection door (200) when the E pole insertion hole (110) is inserted.

2. The receptacle of claim 1, wherein the protection door stop mechanism (300) comprises a stop arm (310), wherein the stop arm (310) is configured to deform when an E-pole pin of the plug is inserted into the E-pole receptacle (110) such that the stop arm (310) releases the limit on the movement of the LN-pole protection door (200).

3. The receptacle of claim 2, wherein the spacing arm (310) comprises a pair of resilient arms (320, 330), the pair of resilient arms (320, 330) being formed into an open shape (340), the open shape (340) being adapted to receive the E-pole pin.

4. The receptacle of claim 2, wherein the retaining arm (310) includes a protrusion (350, 360), the protrusion (350, 360) adapted to abut the E-pole pin when the E-pole pin is inserted into the E-pole receptacle (110).

5. A socket according to claim 3, wherein the stop arm (310) comprises folds (321, 331) protruding outwards from the opening shape (340).

6. The receptacle of claim 2, wherein the retaining arm (310) includes a protrusion (322, 332) and the LN pole protection door (200) includes an engagement slot (230, 240) adapted to engage with the protrusion (322, 332), the engagement slot (230, 240) engaging with the protrusion (322, 332) when the E pole pin is inserted into the E pole receptacle (110), and the engagement slot (230, 240) disengaging with the protrusion (322, 332) when the E pole pin is not inserted into the E pole receptacle (110).

7. The receptacle according to claim 6, wherein the protrusion (322, 332) comprises a hook-shaped portion (323, 333), and the engagement groove (230, 240) comprises a recess (231, 241) arranged opposite to the hook-shaped portion such that the recess (231, 241) and the hook-shaped portion (323, 333) at least partially overlap in an engagement direction.

8. The socket of claim 7, wherein the protrusions (322, 332) include reinforcing ribs (324, 334) adapted to enhance the strength thereof.

9. The socket of claim 1, further comprising a base (400) for supporting the LN pole protection door (200), the base (400) including a protruding shaft (410), and the LN pole protection door (200) including a hole (270) adapted to receive the protruding shaft (410), wherein the LN pole protection door (200) is configured to move along the protruding shaft (410) when the L pole pin and the N pole pin are inserted into the L pole receptacle (120) and the N pole receptacle (130).

10. The socket of claim 9, wherein the base (400) includes a stop (420, 430) located laterally of the protruding shaft (410), wherein the LN pole protection door (200) is configured to rotate about an axis of the protruding shaft (410) and be stopped by the stop (420, 430) when only one of the L pole pin and the N pole pin is inserted.

11. The socket of any one of claims 1-10, wherein the LN pole guard gate (200) includes an angled cover surface for covering the L pole jack (120) and the N pole jack (130), respectively, the angled height of the cover surface increasing as it approaches the guard gate limit mechanism (300) such that the LN pole guard gate (200) moves away from the guard gate limit mechanism (300) as L pole pins and N pole pins of the plug are inserted into the L pole jack (120) and the N pole jack (130).

12. The socket of claims 2-5, wherein the LN pole guard gate (200) includes sloped cover surfaces for covering the L pole jack (120) and the N pole jack (130), respectively, the sloped height of the cover surfaces decreasing as it approaches the guard gate limit mechanism (300) such that the LN pole guard gate (200) moves toward the guard gate limit mechanism (300) as the L pole pin and N pole pin of the plug are inserted into the L pole jack (120) and N pole jack (130).

13. The receptacle of claim 12, wherein the stop arm (310) includes a stop (325, 335), the stop (324, 334) being configured to abut the LN pole guard gate (200) when an E-pole pin of a plug is not inserted into the E-pole receptacle (110) and to move in response to deformation of the guard gate stop mechanism (300) to allow the LN pole guard gate (200) to move toward the guard gate stop mechanism (300) when an E-pole pin of the plug is inserted into the E-pole receptacle (110).

14. The receptacle of claim 13, wherein the retaining arm (310) includes a pair of resilient arms (320, 330), the stop (324, 334) being formed as a sheet structure and extending at an angle relative to the resilient arms (320, 330).