Leakage protection plug

Abstract

The present invention discloses a leakage protection plug, which belongs to the field of electrical technology. In the plug, the two ends of the release member are respectively connected to the linkage member and the release drive member, and the release member and the reset member can be locked or unlocked with each other; the live wire and neutral wire dynamic elastic members are electrically connected to the circuit board and respectively abut the linkage member, and both have live wire and neutral wire dynamic contacts corresponding to the live wire and neutral wire static contacts on the live wire and neutral wire plug members; the ground wire dynamic elastic member is electrically connected to the circuit board and abuts the reset member, and the ground wire dynamic contact of the ground wire dynamic elastic member corresponds to the ground wire static contact of the ground wire plug member; by pressing the reset member, the release member and the reset member are switched from unlocking to locking, so that the ground wire dynamic contact contacts the ground wire static contact; after the pressing is released, the reset member resets and links the linkage member through the release member, thereby driving the live wire dynamic elastic member and the neutral wire dynamic elastic member to make the corresponding dynamic contacts contact the static contacts. The plug has better leakage protection, simple structure and high reliability.

Description

Technical Field

[0001] The present invention relates to the field of electrical technology, in particular to a leakage protection plug. Background Art

[0002] The leakage protection plug, also known as the residual current protection plug, can be disconnected when leakage occurs in the electrical circuit where the leakage protection plug is located, thereby playing a protective role.

[0003] The leakage protection plug provided in the related art can only disconnect when the live wire and the neutral wire are abnormally energized, but cannot disconnect when the ground wire is abnormally energized. This is not only insufficient to eliminate the hidden danger of electric shock, but also when the user connects the wrong line, for example, mistakenly connects the ground wire to the neutral wire or the live wire, it will cause the risk of leakage. Summary of the Invention

[0004] In view of this, the present invention provides a leakage protection plug, which can solve the technical problems existing in the related art.

[0005] Specifically, the following technical solutions are included:

[0006] A leakage protection plug, comprising: a housing, a reset member assembled on the housing, a linkage member, a tripping member, a tripping driving member, a circuit board, a live wire dynamic elastic member, a neutral wire dynamic elastic member, a ground wire dynamic elastic member, a live wire plug member, a neutral wire plug member, and a ground wire plug member;

[0007] The two ends of the tripping member are respectively connected to the linkage member and the tripping driving member, and when the leakage protection plug is in the on state, the tripping member and the reset member are locked with each other, and when the leakage protection plug is in the off state, the tripping member and the reset member are unlocked;

[0008] The live wire dynamic elastic member and the neutral wire dynamic elastic member are both electrically connected to the circuit board and respectively abut against the linkage member, the live wire dynamic elastic member has a live wire dynamic contact corresponding to the live wire static contact provided on the live wire plug member, and the neutral wire dynamic elastic member has a neutral wire dynamic contact corresponding to the neutral wire static contact provided on the neutral wire plug member;

[0009] The ground wire dynamic elastic member is electrically connected to the circuit board and abuts against the reset member, and the ground wire dynamic elastic member has a ground wire dynamic contact corresponding to the ground wire static contact provided on the ground wire plug member;

[0010] The leakage protection plug is configured such that, by pressing the reset member, the trip member and the reset member can be switched from the unlocked state to the locked state, so that the reset member presses the ground movable elastic member to bring the ground movable contact into contact with the ground static contact; and

[0011] After the pressing is released, the reset member resets and links the linkage member through the trip member, and the moving linkage member drives the live wire dynamic elastic member and the neutral wire dynamic elastic member, so that the live wire moving contact contacts the live wire static contact, and the neutral wire moving contact contacts the neutral wire static contact.

[0012] In some possible implementations, the first end of the tripping member has a locking portion and a connecting portion, the locking portion cooperates and locks with a locking groove provided on the reset member, and the connecting portion is connected to the linkage member; and the second end of the tripping member is movably connected to the tripping drive member;

[0013] The tripping member is configured to move horizontally under the driving action of the tripping drive member so that the locking portion enters or exits the locking groove, and to move vertically together with the linkage member relative to the tripping drive member.

[0014] In some possible implementations, the reset member includes: a reset rod, a first elastic member, and a second elastic member;

[0015] The side wall of the reset rod located above the circuit board is provided with a stop block, and the side wall of the reset rod located below the circuit board is provided with the locking groove;

[0016] The first elastic member is sleeved on the reset rod and located between the stop block and the circuit board, and is used to apply an upward force to the reset rod;

[0017] The ground-moving elastic member is located below the reset rod, and the second elastic member is located between the reset rod and the ground-moving elastic member, and is used to apply an upward force to the reset rod and a downward force to the ground-moving elastic member.

[0018] In some possible implementations, the linkage member has a first through hole, a second through hole, and a connecting hole, the first through hole vertically passing through the linkage member, the second through hole is located on a first side of the linkage member and communicates with the first through hole, and the connecting hole extends horizontally and passes through at least the first side of the linkage member;

[0019] The linkage member is movably sleeved on the outside of the reset rod through the first through hole, the linkage member is connected to the connecting portion through the connecting hole, and the second through hole is used to accommodate the locking portion.

[0020] In some possible implementations, the linkage member includes: a linkage main body portion and two abutment portions;

[0021] The first through hole, the second through hole and the connecting hole are all located in the linkage main body;

[0022] The two abutting portions are respectively connected to the second side and the third side of the linkage main body portion distributed in the horizontal direction, and the two abutting portions are respectively in corresponding abutment with the live line dynamic elastic member and the neutral line dynamic elastic member.

[0023] In some possible implementations, the ground wire moving contact is located at the bottom of one end of the ground wire moving elastic member, the ground wire static contact is located at the top of one end of the ground wire plug member, and the ground wire static contact is located below the ground wire moving contact;

[0024] When the ground wire static contact contacts the ground wire moving contact, the ground wire moving elastic member is pressed down by the second elastic member and deformed;

[0025] When the ground wire static contact and the ground wire moving contact are separated, the ground wire moving elastic member is reset upward.

[0026] In some possible implementations, the ground wire dynamic elastic member includes a ground wire spring segment and a ground wire connecting segment connected to each other, the ground wire spring segment being arranged horizontally, and the ground wire dynamic contact being located at the bottom of one end of the ground wire spring segment away from the ground wire connecting segment; the ground wire spring segment also abuts against the lower end of the second elastic member, and the ground wire connecting segment is electrically connected to the circuit board and is used to connect the ground wire;

[0027] The ground wire plug component includes a connected ground wire plug section and a ground wire contact support section, the ground wire plug section is arranged in the vertical direction, the ground wire contact support section is arranged in the horizontal direction, and the ground wire static contact is located at the top of one end of the ground wire contact support section away from the ground wire plug section.

[0028] In some possible implementations, the live wire moving contact is located at the top of one end of the live wire moving elastic member, the live wire static contact is located at the bottom of one end of the live wire plug member, and the live wire static contact is located above the live wire moving contact;

[0029] When the live wire static contact contacts the live wire moving contact, the live wire dynamic elastic member is pressed upward by the corresponding abutment portion and deformed;

[0030] When the live wire static contact is separated from the live wire moving contact, the live wire moving elastic member is reset downward and presses down the corresponding abutting portion.

[0031] In some possible implementations, the live wire dynamic elastic member includes a live wire segment, a first live wire transition segment, and a live wire connecting segment connected in sequence, the live wire segment is arranged in a horizontal direction, the live wire connecting segment is arranged in a vertical direction, and the live wire dynamic contact is located at a top end of the live wire segment away from the first live wire transition segment;

[0032] The live wire bullet section abuts against the top wall of the corresponding abutting portion, and the live wire connecting section is electrically connected to the circuit board and is used to connect the live wire;

[0033] The live wire plug component includes a connected live wire plug section, a second live wire transition section and a live wire contact support section. The live wire plug section is arranged in a vertical direction, the live wire contact support section is arranged in a horizontal direction, and the live wire static contact is located at the bottom of one end of the live wire contact support section away from the second live wire transition section.

[0034] In some possible implementations, the neutral line moving contact is located at the top of one end of the neutral line moving elastic member, the neutral line static contact is located at the bottom of one end of the neutral line plug member, and the neutral line static contact is located above the neutral line moving contact;

[0035] When the neutral line static contact contacts the neutral line moving contact, the neutral line moving elastic member is pressed upward by the corresponding abutment portion and deformed;

[0036] When the neutral line static contact is separated from the neutral line moving contact, the neutral line moving elastic member is reset downward and presses down the corresponding abutting portion.

[0037] In some possible implementations, the neutral line dynamic elastic member includes a neutral line spring segment, a first neutral line transition segment, and a neutral line connecting segment connected in sequence, the neutral line spring segment is arranged in a horizontal direction, the neutral line connecting segment is arranged in a vertical direction, and the neutral line dynamic contact is located at a top of an end of the neutral line spring segment away from the first neutral line transition segment;

[0038] The neutral wire spring section abuts against the top wall of the corresponding abutting portion, and the neutral wire connecting section is electrically connected to the circuit board and is used to connect the neutral wire;

[0039] The neutral wire plug component includes a connected neutral wire plug section, a second neutral wire transition section and a neutral wire contact support section. The neutral wire plug section is arranged in a vertical direction, the neutral wire contact support section is arranged in a horizontal direction, and the neutral wire static contact is located at the bottom of one end of the neutral wire contact support section away from the second neutral wire transition section.

[0040] In some possible implementations, the housing includes: a base, an upper cover, and a bracket;

[0041] The upper cover is connected to the base to form a accommodating cavity, and the bracket is located in the accommodating cavity. The bracket can at least support and position the linkage part, the tripping drive part, the circuit board, the live line dynamic elastic part and the neutral line dynamic elastic part.

[0042] In some possible implementations, the leakage protection plug includes a test piece, and the test piece is electrically connected to the circuit board;

[0043] The test piece is configured so that it can be triggered to provide a leakage test current, thereby causing the tripping drive to perform a tripping action.

[0044] The beneficial effects of the technical solution provided by the embodiment of the present invention include at least:

[0045] The leakage protection plug provided in the embodiments of the present invention establishes a breakpoint on the ground wire by providing a ground wire dynamic elastic member with a ground wire moving contact and a ground wire static contact on the ground wire plug member. This allows the leakage protection plug to disconnect if any of the live, neutral, or ground wires becomes abnormally energized. Furthermore, even if a user incorrectly connects the ground wire to the neutral or live wire, the leakage protection plug will still disconnect normally if any of the live, neutral, or ground wires becomes abnormally energized. This fundamentally eliminates the risk of electric shock and curbs the safety hazards associated with leakage.

[0046] Furthermore, the leakage protection plug provided in the embodiment of the present invention is also provided with a linkage part, so that the live wire dynamic elastic part, the neutral wire dynamic elastic part and the ground wire dynamic elastic part can be linked, which includes, when the leakage protection plug is reset from the disconnected state to the connected state by pressing the reset part, the tripping part and the reset part are unlocked, and the pressed reset part presses the ground wire dynamic elastic part to make the ground wire dynamic contact contact with the ground wire static contact. Subsequently, the pressure on the reset part is released, the reset part resets and moves together through the tripping part linkage linkage part, and the moving linkage part drives the live wire dynamic elastic part and the neutral wire dynamic elastic part, so that the live wire dynamic contact contacts the live wire static contact, and the neutral wire dynamic contact contacts the neutral wire static contact, and the reset part resets to the line connection position, and the ground wire dynamic contact still maintains contact with the ground wire static contact. In this way, the leakage protection plug can be reset to the connected state. By making the reset part, the tripping part and the linkage part work in coordination with each other, it is not only beneficial to simplify the internal structure of the leakage protection plug and improve its working reliability, but also beneficial to keep the movement stroke of each moving contact consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0048] Figure 1 A diagram showing an exemplary leakage protection plug according to an embodiment of the present invention;

[0049] Figure 2 A schematic structural diagram of an exemplary leakage protection plug provided by an embodiment of the present invention with the upper cover removed;

[0050] Figure 3 A schematic structural diagram of an exemplary leakage protection plug provided in an embodiment of the present invention after removing the upper cover and circuit board;

[0051] Figure 4 A cross-sectional view of an exemplary leakage protection plug in a connected state provided by an embodiment of the present invention;

[0052] Figure 5 A cross-sectional view of an exemplary leakage protection plug in a disconnected state provided by an embodiment of the present invention;

[0053] Figure 6 A cross-sectional view of an exemplary leakage protection plug provided by an embodiment of the present invention in a press-to-reset state;

[0054] Figure 7 A schematic diagram of a first partial structure of an exemplary leakage protection plug provided by an embodiment of the present invention;

[0055] Figure 8 A schematic diagram of a second partial structure of an exemplary leakage protection plug provided by an embodiment of the present invention;

[0056] Figure 9 A third partial structural diagram of an exemplary leakage protection plug provided by an embodiment of the present invention;

[0057] Figure 10 An exemplary arrangement diagram of a tripping member and a tripping driving member in a disassembled state provided by an embodiment of the present invention;

[0058] Figure 11 A schematic structural diagram of an exemplary linkage member provided in an embodiment of the present invention;

[0059] Figure 12 A cross-sectional view of an exemplary linkage member, reset member, and release member in an assembled state provided by an embodiment of the present invention;

[0060] Figure 13 An assembly diagram of an exemplary ground wire dynamic elastic member and a ground wire latch member provided by an embodiment of the present invention;

[0061] Figure 14 An exemplary assembly diagram of the live and neutral wire dynamic elastic members and the live and neutral wire plug members provided in an embodiment of the present invention;

[0062] Figure 15 An assembly diagram of an exemplary fire wire dynamic elastic member and a fire wire plug member provided in an embodiment of the present invention;

[0063] Figure 16 An assembly diagram of an exemplary zero-line dynamic elastic member and a zero-line latch member provided in an embodiment of the present invention.

[0064] The reference numerals represent:

[0065] 1. Housing; 11. Base; 12. Upper cover; 13. Bracket;

[0066] 2. Reset member; 20. Locking groove; 21. Reset rod; 210. Stop block; 22. First elastic member; 23. Second elastic member; 24. Reset button;

[0067] 3. Linkage member; 301. First through hole; 302. Second through hole; 303. Connecting hole; 31. Linkage main body; 32. Abutment portion;

[0068] 4. Release member; 41. Locking portion; 42. Connecting portion; 43. Slot;

[0069] 5. Trip drive member; 50. Moving iron core; 51. Annular limit groove;

[0070] 6. Circuit board;

[0071] 71. Fire wire dynamic elastic member; 710. Fire wire dynamic contact; 711. Fire wire elastic segment; 712. First fire wire transition segment; 713. Fire wire connecting segment;

[0072] 72. Neutral line dynamic elastic member; 720. Neutral line dynamic contact; 721. Neutral line elastic segment; 722. First neutral line transition segment; 723. Neutral line connecting segment;

[0073] 73. Ground wire dynamic elastic member; 730. Ground wire dynamic contact; 731. Ground wire elastic segment; 732. Ground wire connecting segment; 733. Positioning boss;

[0074] 81. Live wire plug member; 810. Live wire static contact; 811. Live wire plug section; 812. Second live wire transition section; 813. Live wire contact support section;

[0075] 82. Neutral wire latch; 820. Neutral wire static contact; 821. Neutral wire latch section; 822. Second neutral wire transition section; 823. Neutral wire contact support section;

[0076] 83. Ground wire plug; 830. Ground wire static contact; 831. Ground wire plug section; 832. Ground wire contact support section;

[0077] 9. Test piece.

[0078] The above drawings illustrate specific embodiments of the present invention, which will be described in more detail below. These drawings and the accompanying description are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0079] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0080] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent like or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0081] The directional nouns involved in the embodiments of the present invention, such as "up", "down", "side", etc., are generally expressed in the form of Figure 4 The relative relationships shown in the figure are used as a reference, and these directional terms are used only to more clearly describe the relationship between structures, not to describe absolute directions. When the product is placed in different postures, the direction may change, for example, "up" and "down" may be interchangeable.

[0082] To make the technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0083] The leakage protection plug provided in the embodiment of the present invention can solve the leakage risk caused by abnormal electrification of the ground wire and the wrong connection of the line by the user in the related art.

[0084] As attached Figure 1 -Attached Figure 4 As shown, the leakage protection plug includes: a shell 1, a reset part 2 assembled on the shell 1, a linkage part 3, a tripping part 4, a tripping driving part 5, a circuit board 6, a live wire dynamic elastic part 71, a neutral wire dynamic elastic part 72, a ground wire dynamic elastic part 73, a live wire plug part 81, a neutral wire plug part 82 and a ground wire plug part 83.

[0085] As attached Figure 4As shown, the two ends of the tripping member 4 are respectively connected to the linkage member 3 and the tripping driving member 5, and when the leakage protection plug is in the on state, the tripping member 4 and the reset member 2 are locked with each other, and when the leakage protection plug is in the off state, the tripping member 4 and the reset member 2 are released.

[0086] That is to say, the tripping member 4 can also be locked and connected to the reset member 2, and the tripping member 4 and the reset member 2 can be locked with each other, so that the leakage protection plug is stable in the on state, and the tripping member 4 and the reset member 2 can be unlocked, so that the leakage protection plug is stable in the off state.

[0087] Further combined with Figure 7 As shown, the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72 are both electrically connected to the circuit board 6 and respectively abut against the linkage member 3. The live wire dynamic elastic member 71 has a live wire dynamic contact 710 to correspond to the live wire static contact 810 provided on the live wire plug member 81, and the neutral wire dynamic elastic member 72 has a neutral wire dynamic contact 720 to correspond to the neutral wire static contact 820 provided on the neutral wire plug member 82.

[0088] The grounding elastic member 73 abuts against the reset member 2 and has a grounding movable contact 730 corresponding to the grounding static contact 830 provided on the grounding plug member 83. The live plug member 81 is electrically connected to the live wire, the neutral plug member 82 is electrically connected to the neutral wire, and the grounding plug member 83 is electrically connected to the ground wire.

[0089] See also Figure 4 When the leakage protection plug is in the on state, the tripping member 4 and the reset member 2 are locked with each other ( Figure 4 , the locking portion 41 of the trip member 4 is locked in the locking groove 20 of the reset member 2), the live wire moving contact 710 is in contact with the live wire static contact 810, the neutral wire moving contact 720 is in contact with the neutral wire static contact 820, and the ground wire moving contact 730 is in contact with the ground wire static contact 830.

[0090] See also Figure 5 When the leakage protection plug is in the disconnected state (i.e., the leakage protection operation is in progress), the tripping member 4 and the reset member 2 are unlocked ( Figure 5 , the locking portion 41 of the trip member 4 exits the locking groove 20 of the reset member 2), the live wire moving contact 710 is separated from the live wire static contact 810, the neutral wire moving contact 720 is separated from the neutral wire static contact 820, and the ground wire moving contact 730 is separated from the ground wire static contact 830.

[0091] The leakage protection plug is configured to switch the tripping member 4 and the reset member 2 from the unlocked state to the locked state (by pressing the reset member 2). Figure 5 The displayed status switches to Figure 6As shown in the state, the reset member 2 presses the ground wire dynamic elastic member 73 to make the ground wire dynamic contact 730 contact with the ground wire static contact 830; and after the pressure is released, the reset member 2 resets and links the linkage member 3 through the trip member 4, and the moving linkage member 3 then drives the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72, so that the live wire dynamic contact 710 contacts with the live wire static contact 810, and the neutral wire dynamic contact 720 contacts with the neutral wire static contact 820.

[0092] The grounding elastic member 73 abuts the reset member 2. In some examples, the reciprocating motion of the reset member 2 can squeeze or release the grounding elastic member 73. For example, in an embodiment of the present invention, the reciprocating motion of the reset member 2 includes a pressing motion and a resetting motion, wherein the pressing motion is in a downward direction and the resetting motion is in an upward direction. When the reset member 2 moves upward, the grounding elastic member 73 can be released and reset upward, thereby promoting the separation of the grounding movable contact 730 and the grounding static contact 830. When the reset member 2 moves downward, the grounding elastic member 73 can be squeezed downward to deform it, thereby promoting the contact between the grounding movable contact 730 and the grounding static contact 830.

[0093] The live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72 are respectively in contact with the linkage member 3. In some examples, when the reset member 2 and the trip member 4 are in a locked state, the linkage member 3 is also locked accordingly. The linkage member 3 presses the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72 to deform them, so as to promote the contact between the live wire dynamic contact 710 and the live wire static contact 810 and the neutral wire dynamic contact 720 and the neutral wire static contact 820.

[0094] In addition, when the reset member 2 and the trip member 4 are in the unlocked state, the linkage member 3 releases the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72 and is pressed by the two to promote the separation of the live wire moving contact 710 and the live wire static contact 810 and the neutral wire moving contact 720 and the neutral wire static contact 820.

[0095] The leakage protection plug provided in this embodiment of the present invention establishes a breakpoint on the ground wire by providing a ground wire dynamic elastic member 73 having a ground wire dynamic contact 730 and a ground wire static contact 830 on a ground wire plug member 83. This allows the leakage protection plug to disconnect if any of the live, neutral, and ground wires become abnormally energized. Furthermore, even if a user incorrectly connects the ground wire to the neutral or live wire, the leakage protection plug will still disconnect normally if any of the three wires become abnormally energized. This fundamentally eliminates the risk of electric shock and curbs the safety hazards caused by leakage.

[0096] Furthermore, the leakage protection plug provided in the embodiment of the present invention is further provided with a linkage member 3, so that the live wire dynamic elastic member 71, the neutral wire dynamic elastic member 72 and the ground wire dynamic elastic member 73 can be linked, which includes that when the leakage protection plug is reset from the disconnected state to the connected state by pressing the reset member 2, the tripping member 4 and the reset member 2 are unlocked, and the pressed reset member 2 presses the ground wire dynamic elastic member 73 to make the ground wire dynamic contact 730 contact the ground wire static contact 830, and then the reset member 2 is released. When the pressure is applied, the reset member 2 resets and moves together with the linkage member 3 through the trip member 4. The moving linkage member 3 then drives the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72, so that the live wire moving contact 710 contacts the live wire static contact 810, and the neutral wire moving contact 720 contacts the neutral wire static contact 820. The reset member 2 resets to the line connection position, and the ground wire moving contact 730 still keeps contact with the ground wire static contact 830. The leakage protection plug can be reset to the connection state.

[0097] By making the reset member 2, the tripping member 4 and the linkage member 3 work in coordination with each other, it is not only beneficial to simplify the internal structure of the leakage protection plug and improve its working reliability, but also beneficial to keep the movement stroke of each moving contact consistent.

[0098] The linkage cooperation between the reset member 2, the linkage member 3, the tripping member 4 and the tripping driving member 5 can be further referred to. Figure 7-10 In some implementations, such as the attached Figure 10 As shown, the first end of the tripping member 4 has a locking portion 41 and a connecting portion 42, the locking portion 41 cooperates with the locking groove 20 set on the reset member 2 to lock, and the connecting portion 42 is connected to the linkage member 3; and the second end of the tripping member 4 is movably connected to the tripping drive member 5.

[0099] The tripping member 4 is configured to be able to move in the horizontal direction under the driving action of the tripping driving member 5, so that the locking part 41 enters or exits the locking groove 20, and to be able to move in the vertical direction together with the linkage member 3 relative to the tripping driving member 5, thereby driving the live line dynamic elastic member 71 and the neutral line dynamic elastic member 72 to deform in the vertical direction.

[0100] By movably connecting the second end of the trip member 4 to the trip driver 5, the trip driver 5 can drive the trip member 4 to move horizontally, so that the locking portion 41 enters the locking groove 20 to lock, and the locking portion 41 exits the locking groove 20 to unlock. At the same time, the trip driver 5 does not restrict the vertical movement of the trip member 4.

[0101] By connecting the connecting portion 42 of the release member 4 to the linkage member 3 , the release member 4 can drive the linkage member 3 to move in the vertical direction when the release member 4 moves in the vertical direction.

[0102] The live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72 respectively abut against the linkage member 3. When the reset member 2 and the trip member 4 are in the locked state, the linkage member 3 is simultaneously locked and presses the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72 upward, causing the live wire moving contact 710 to contact the live wire static contact 810, and the neutral wire moving contact 720 to contact the neutral wire static contact 820. Furthermore, when the reset member 2 and the trip member 4 are in the unlocked state, the linkage member 3 is simultaneously unlocked, and the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72 are reset and press the linkage member 3 downward, causing the live wire moving contact 710 to separate from the live wire static contact 810, and the neutral wire moving contact 720 to separate from the neutral wire static contact 820.

[0103] When the tripping member 4 moves in the horizontal direction, the linkage member 3 may move synchronously therewith or may not move therewith. In some examples, when the tripping member 4 moves in the horizontal direction, the position of the linkage member 3 is fixed.

[0104] In some examples, such as the attached Figure 10 As shown, the locking portion 41 and the connecting portion 42 are protruded from the locking portion 41 , and the two cooperate to form a slot. For example, a connecting portion 42 is arranged on each side of the locking portion 41 , and the gap between the two connecting portions 42 is the slot.

[0105] When the release member 4 is locked to the reset member 2, the locking portion 41 is located in the locking groove 20 on the side wall of the release member 4, and is limited by the top and bottom walls of the locking groove 20, so that the release member 4 cannot move in the vertical direction relative to the reset member 2. At the same time, the two connecting portions 42 are located on the outside of the reset member 2, that is, the portion of the reset member 2 corresponding to the locking groove 20 is sleeved in the slot formed by the locking portion 41 and the connecting portion 42.

[0106] This not only ensures effective locking between the tripping member 4 and the resetting member 2 , but also enables the connecting portion 42 to be easily assembled to the linkage member 3 .

[0107] In some examples, such as the attached Figure 10 As shown, the tripping drive member 5 is an electromagnetic tripper, which includes a moving iron core 50 that reciprocates in the horizontal direction. An annular limiting groove 51 is provided on the outer side wall of the end of the moving iron core 50 facing the tripping member 4. The second end of the tripping member 4 has a slot 43 extending in the up and down directions. The tripping member 4 is sleeved in the annular limiting groove 51 of the moving iron core 50 through the slot 43 and is limited in the horizontal direction by it.

[0108] In this way, on the one hand, the release member 4 can reciprocate with the movable iron core 50 in the horizontal direction, and on the other hand, the release member 4 can also move in the vertical direction relative to the movable iron core 50, that is, the movable iron core 50 does not move in the vertical direction, and the release member 4 moves in the vertical direction.

[0109] In some examples, the release member 4 includes: a first end plate, a transition plate, and a second end plate connected in sequence, the first end plate is arranged in a horizontal direction and provides a locking portion 41 and a connecting portion 42, the second end plate is arranged in a vertical direction and provides a slot 43, and the transition plate is bent to connect the first end plate and the second end plate in different orientations.

[0110] In some implementations, combined with Figure 4 and Figure 7 As shown, the reset member 2 includes: a reset rod 21, a first elastic member 22 and a second elastic member 23; Figure 4 It can be seen that a stop block 210 is provided on the side wall of the reset rod 21 located above the circuit board 6, and a locking groove 20 is provided on the side wall of the reset rod 21 located below the circuit board 6; the first elastic member 22 is sleeved on the reset rod 21 and is located between the stop block 210 and the circuit board 6, and is used to apply an upward force to the reset rod 21; the ground dynamic elastic member 73 is located below the reset rod 21, and the second elastic member 23 is located between the reset rod 21 and the ground dynamic elastic member 73, and is used to apply an upward force to the reset rod 21 and a downward force to the ground dynamic elastic member 73.

[0111] The reset lever 21 extends through the circuit board 6, and the locking groove 20 can be provided on the side wall of the reset lever 21 located below the circuit board 6. A stop block 210 is provided on the side wall of the reset lever 21 located above the circuit board 6. This stop block 210 can be, for example, an annular step. The upper end of the first elastic member 22 abuts against the annular step, and the lower end of the first elastic member 22 abuts against the circuit board 6.

[0112] In some examples, such as the attached Figure 7 As shown, the first elastic member 22 is a compression spring, and the first elastic member 22 is also sleeved on the outside of the rod body of the reset rod 21 located above the circuit board 6.

[0113] The lower end of the reset rod 21 extends to the bottom of the circuit board 6 and is located above the ground-moving elastic member 73. In some examples, the side wall of the lower end rod body of the reset rod 21 has an elastic member limiting structure. For example, the elastic member limiting structure is an annular step. The upper end of the second elastic member 23 is sleeved on the lower end of the reset rod 21 and abuts against the annular step. The lower end of the second elastic member 23 abuts against the ground-moving elastic member 73.

[0114] In some examples, such as the attached Figure 9 As shown, the second elastic member 23 is a compression spring, and a positioning boss 733 is further provided on the upper surface of the ground dynamic elastic member 73. The lower end of the second elastic member 23 is also sleeved on the positioning boss 733 to achieve effective positioning.

[0115] When the leakage protection plug is in the on state, the reset member 2 and the trip member 4 are locked with each other to achieve positioning in the vertical direction. At this time, the first elastic member 22 and the second elastic member 23 are both compressed. The compressed second elastic member 23 acts on the ground wire dynamic elastic member 73 by relying on its elastic potential energy. The ground wire dynamic elastic member 73 is squeezed and deformed, so that the ground wire dynamic contact 730 thereon is in stable contact with the ground wire static contact 830.

[0116] When the leakage protection plug performs the leakage protection operation, that is, the leakage protection plug is switched from the on state to the off state, the tripping member 4 performs a tripping action under the action of the tripping driving member 5, so that the locking portion 41 thereon exits the locking groove 20 on the reset member 2, and the reset member 2 and the tripping member 4 are no longer locked. Under the action of the first elastic member 22 and the second elastic member 23, the reset member 2 resets and moves upward to the upper limit position.

[0117] After the line maintenance is completed, the leakage protection plug is reset to switch it from the disconnected state to the connected state. The reset member 2 is pressed downward so that the reset member 2 is pressed downward to the lower limit position. At this time, the pressed reset member 2 presses the ground wire dynamic elastic member 73 to make the ground wire dynamic contact 730 contact with the ground wire static contact 830. Then, the pressure on the reset member 2 is released, the reset member 2 resets and moves together with the linkage member 3 through the trip member 4. The moving linkage member 3 then drives the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72, so that the live wire dynamic contact 710 contacts the live wire static contact 810, and the neutral wire dynamic contact 720 contacts the neutral wire static contact 820. The reset member 2 resets and moves to the line connection position (the line connection position is lower than the upper limit position), and the ground wire dynamic contact 730 still maintains contact with the ground wire static contact 830. In this way, the leakage protection plug can be reset to the connected state.

[0118] In some examples, such as the attached Figure 7 As shown, the reset member 2 includes a reset button 24, which is sleeved on the portion of the reset rod 21 located above the housing 1, that is, the reset button 24 is exposed to the outside of the housing 1. By providing the reset button 24, it is not only beneficial to improve the appearance of the reset member 2, but also to increase the feel of the reset member 2 when being pressed.

[0119] In some examples, the reset button 24 is made of an elastic insulating material, such as rubber. The reset button 24 is gap-matched with a through-hole provided on the housing 1 to improve the sealing performance of the leakage protection plug.

[0120] When the reset lever 21 is in the line-connected position, a certain gap exists between the top of the reset lever 21 and the top wall of the inner cavity of the reset button 24, allowing the reset lever 21 to continue upward to the upper limit position. When the reset lever 21 is in the upper limit position, the top of the reset lever 21 contacts the top wall of the inner cavity of the reset button 24. At this time, the leakage protection plug is in the disconnected state. In other words, the upper limit position of the reset lever 21 is also the line-disconnected position.

[0121] In some implementations, further combining Figure 11 As shown, the linkage member 3 has a first through hole 301, a second through hole 302 and a connecting hole 303. The first through hole 301 vertically passes through the linkage member 3, the second through hole 302 is located on the first side of the linkage member 3 and is connected to the first through hole 301, and the connecting hole 303 extends in the horizontal direction and at least passes through the first side of the linkage member 3.

[0122] Combine Figure 12 It can be seen that the linkage member 3 is movably sleeved on the outside of the reset rod 21 through the first through hole 301 , the linkage member 3 is connected to the connecting portion 42 through the connecting hole 303 , and the second through hole 302 is used to accommodate the locking portion 41 .

[0123] When assembling the tripping member 4, the linkage member 3 and the reset member 2, the connecting portion 42 at the first end of the tripping member 4 is inserted into the connecting hole 303 of the linkage member 3 from one side of the linkage member 3 as a starting point. At the same time, the locking portion 41 at the first end of the tripping member 4 is also located in the second through hole 302 of the linkage member 3.

[0124] When the tripping member 4 reciprocates in the horizontal direction, the second through hole 302 allows the locking portion 41 to make synchronous reciprocating motion in the horizontal direction, and the connecting hole 303 allows the connecting portion 42 to make synchronous reciprocating motion in the horizontal direction. Moreover, after the tripping member 4 moves horizontally to unlock with the reset member 2, the connecting portion 42 of the tripping member 4 is still located in the connecting hole 303 to ensure that the tripping member 4 and the linkage member 3 are always connected and can move in the vertical direction synchronously. That is to say, the horizontal dimension of the connecting hole 303 is greater than or equal to the horizontal dimension and motion stroke of the connecting portion 42.

[0125] By defining the assembly method between the linkage member 3, the release member 4 and the reset member 2 as above, not only can the linkage effect of the three be made more reliable and stable, but also the connection of each component is made more compact and efficient, reducing space occupancy.

[0126] As attached Figure 11As shown, the linkage member 3 includes a linkage body portion 31 and two abutment portions 32. A first through-hole 301, a second through-hole 302, and a connection hole 303 are all located in the linkage body portion 31. Specifically, the first through-hole 301 vertically passes through the upper and lower ends of the linkage body portion 31. The second through-hole 302 is located on a first side of the linkage body portion 31 and communicates with the first through-hole 301. The connection hole 303 extends horizontally and passes through at least the first side of the linkage body portion 31.

[0127] The two abutting portions 32 are respectively connected to the second side and the third side of the linkage main body portion 31 distributed in the horizontal direction, and the two abutting portions 32 are respectively abutted against the live line dynamic elastic member 71 and the neutral line dynamic elastic member 72 .

[0128] By providing two abutting portions 32 to abut against the live line dynamic elastic member 71 and the neutral line dynamic elastic member 72 respectively, the interaction between them is made more sensitive and reliable, and it is also beneficial to reduce the volume of the linkage member 3.

[0129] The above describes the structure and assembly method of the reset member 2, the tripping member 4 and the linkage member 3. In combination with the above embodiment, the structure and matching method of each dynamic elastic member and each latch member are described below:

[0130] In some examples, such as the attached Figure 13 As shown, the grounding movable contact 730 is located at the bottom of one end of the grounding movable elastic member 73, and the grounding static contact 830 is located at the top of one end of the grounding latch member 83. The grounding static contact 830 is located below the grounding movable contact 730. When the grounding static contact 830 contacts the grounding movable contact 730, the grounding movable elastic member 73 is pressed downward by the second elastic member 23 and deformed. When the grounding static contact 830 separates from the grounding movable contact 730, the grounding movable elastic member 73 returns to its original position.

[0131] When the leakage protection plug is in the on state, the reset member 2 moves downward a certain distance relative to its upper limit position, so that the first elastic member 22 and the second elastic member 23 are both compressed, and the ground wire dynamic elastic member 73 is pressed down by the second elastic member 23 and deformed, thereby pressing down the ground wire dynamic contact 730 so that it is in close contact with the ground wire static contact 830 below.

[0132] When the leakage protection plug is in the disconnected state, the reset member 2 moves upward to the upper limit position, and the first elastic member 22 and the second elastic member 23 are both reset. In this way, the downward pressure on the ground wire dynamic elastic member 73 is reduced, causing the ground wire dynamic elastic member 73 to reset upward, and then the ground wire dynamic contact 730 is reset upward together, so that it is separated from the ground wire static contact 830 below.

[0133] As attached Figure 13As shown, the ground wire dynamic elastic member 73 includes a ground wire spring segment 731 and a ground wire connecting segment 732 connected to each other. The ground wire spring segment 731 is arranged in a horizontal direction, and the ground wire dynamic contact 730 is located at the bottom of the end of the ground wire spring segment 731 away from the ground wire connecting segment 732; the ground wire spring segment 731 also abuts against the lower end of the second elastic member 23, and the ground wire connecting segment 732 is electrically connected to the circuit board 6 and is used to connect the ground wire.

[0134] As attached Figure 13 As shown, the ground wire plug member 83 includes a connected ground wire plug section 831 and a ground wire contact support section 832. The ground wire plug section 831 is arranged in the vertical direction, and the ground wire contact support section 832 is arranged in the horizontal direction. The ground wire static contact 830 is located at the top of the end of the ground wire contact support section 832 away from the ground wire plug section 831.

[0135] For example, the ground wire spring segment 731 is suspended in the air, allowing it to elastically deform in the vertical direction. The ground wire connecting segment 732 is fixedly mounted on the bottom of the housing 1. For example, the ground wire connecting segment 732 is L-shaped, with its vertical segment connected to the ground wire spring segment 731, facilitating the suspended arrangement of the ground wire spring segment 731. The horizontal segment is connected to the ground wire and can be connected to the circuit board 6 via a wire or the like.

[0136] Exemplarily, the ground wire pin section 831 is fixedly assembled on the shell 1 and passes through the bottom wall of the shell 1 to the bottom thereof, and the ground wire contact support section 832 is located below the ground wire spring section 731, and both extend in a direction away from the live wire pin component 81 and the neutral wire pin component 82.

[0137] In some examples, such as the attached Figure 14 and attached Figure 15 As shown, the live wire moving contact 710 is located at the top of one end of the live wire dynamic elastic member 71, the live wire static contact 810 is located at the bottom of one end of the live wire plug member 81, and the live wire static contact 810 is located above the live wire moving contact 710; when the live wire static contact 810 contacts the live wire moving contact 710, the live wire dynamic elastic member 71 is pressed upward by the corresponding abutment portion 32 and deformed; when the live wire static contact 810 is separated from the live wire moving contact 710, the live wire dynamic elastic member 71 resets downward and presses down the corresponding abutment portion 32.

[0138] When the leakage protection plug is in the on state, the reset member 2 and the trip member 4 are in the locked state, and the linkage member 3 is locked at the same time and presses upward against the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72, so that the live wire dynamic contact 710 contacts the live wire static contact 810.

[0139] When the leakage protection plug is in the disconnected state, the reset member 2 and the trip member 4 are in the unlocked state, and the linkage member 3 is unlocked at the same time. In this state, the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72 make a downward reset movement and press down the corresponding abutment part 32 on the linkage member 3, so that the live wire dynamic contact 710 is separated from the live wire static contact 810.

[0140] In some examples, such as the attached Figure 15 As shown, the live wire dynamic elastic member 71 includes a live wire spring segment 711, a first live wire transition segment 712, and a live wire connecting segment 713, which are connected in sequence. The live wire spring segment 711 is arranged horizontally, and the live wire connecting segment 713 is arranged vertically. The live wire dynamic contact 710 is located at the top of the end of the live wire spring segment 711 away from the first live wire transition segment 712. The live wire spring segment 711 abuts the top wall of the corresponding abutment portion 32, and the live wire connecting segment 713 is electrically connected to the circuit board 6 and is used to connect the live wire.

[0141] For example, the firing line segment 711 is suspended horizontally to allow for elastic deformation in the vertical direction. The firing line segment 711 can be positioned on one side of the linkage member 3, the trip member 4, and the trip actuator 5. The first firing line transition section 712 is bent to transition and guide the firing line segment 711 and the firing line connection section 713, positioning them at their desired locations.

[0142] The first live wire transition section 712 is, for example, L-shaped and can be located on one side of the rear end of the trip actuator 5. The live wire connection section 713 is located on one side of the rear end of the trip actuator 5. The lower end of the live wire connection section 713 is connected to the first live wire transition section, and the upper end of the live wire connection section 713 is connected to the live wire and the circuit board 6.

[0143] For example, a plug-in protrusion is provided at the upper end of the live wire connecting section 713 , and the plug-in protrusion is electrically connected to the circuit board 6 by plugging, and the live wire is connected to the upper end side wall of the live wire connecting section 713 .

[0144] As attached Figure 15 As shown, the live wire plug component 81 includes a live wire plug section 811, a second live wire transition section 812 and a live wire contact support section 813 that are connected to each other. The live wire plug section 811 is arranged in the vertical direction, the live wire contact support section 813 is arranged in the horizontal direction, and the live wire static contact 810 is located at the bottom of the end of the live wire contact support section 813 away from the second live wire transition section 812.

[0145] Exemplarily, the second live wire transition section 812 is L-shaped, and the vertical section of the second live wire transition section 812 is connected to the live wire contact support section 813, so that the live wire contact support section 813 carries the live wire static contact 810 and is located above the live wire moving contact 710, and the horizontal section of the second live wire transition section 812 is connected to the live wire plug section 811, so that the live wire plug section 811 is positioned at a desired position to cooperate with the ground wire plug section 831 and the neutral wire plug section 821 to form a three-pole plug structure.

[0146] By arranging the structure and assembly method of the live wire dynamic elastic member 71 and the live wire plug member 81 as described above, the two are compactly matched on one side of the linkage member 3, which not only enables the live wire dynamic contact 710 and the live wire static contact 810 to cooperate efficiently to provide a live wire breakpoint, but also can cooperate with other plug members to form a three-pole plug structure.

[0147] In some examples, such as the attached Figure 14 and attached Figure 16 As shown, the neutral line moving contact 720 is located at the top of one end of the neutral line dynamic elastic member 72, the neutral line static contact 820 is located at the bottom of one end of the neutral line plug member 82, and the neutral line static contact 820 is located above the neutral line moving contact 720. When the neutral line static contact 820 contacts the neutral line moving contact 720, the neutral line dynamic elastic member 72 is pressed upward by the corresponding abutment portion 32 and deformed. When the neutral line static contact 820 separates from the neutral line moving contact 720, the neutral line dynamic elastic member 72 resets downward and presses down the corresponding abutment portion 32. When the leakage protection plug is in the on state, the reset member 2 and the trip member 4 are locked, and the linkage member 3 is simultaneously locked and presses upward against the neutral line dynamic elastic member 72 and the neutral line dynamic elastic member 72, so that the neutral line moving contact 720 contacts the neutral line static contact 820.

[0148] When the leakage protection plug is in the disconnected state, the reset member 2 and the trip member 4 are in the unlocked state, and the linkage member 3 is unlocked at the same time. In this state, the neutral line dynamic elastic member 72 and the neutral line dynamic elastic member 72 make a downward reset movement and press down the corresponding abutment part 32 on the linkage member 3, so that the neutral line dynamic contact 720 is separated from the neutral line static contact 820.

[0149] In some examples, such as the attached Figure 16 As shown, the neutral line dynamic elastic member 72 includes: a neutral line elastic segment 721, a first neutral line transition segment 722 and a neutral line connecting segment 723 connected in sequence, the neutral line elastic segment 721 is arranged in the horizontal direction, the neutral line connecting segment 723 is arranged in the vertical direction, and the neutral line dynamic contact 720 is located at the top of the end of the neutral line elastic segment 721 away from the first neutral line transition segment 722; the neutral line elastic segment 721 abuts against the top wall of the corresponding abutting portion 32, and the neutral line connecting segment 723 is electrically connected to the circuit board 6 and is used to connect the neutral line.

[0150] As attached Figure 16As shown, the neutral wire plug component 82 includes a connected neutral wire plug section 821, a second neutral wire transition section 822 and a neutral wire contact support section 823. The neutral wire plug section 821 is arranged in the vertical direction, the neutral wire contact support section 823 is arranged in the horizontal direction, and the neutral wire static contact 820 is located at the bottom of the end of the neutral wire contact support section 823 away from the second neutral wire transition section 822.

[0151] The structure and arrangement of the neutral line dynamic elastic member 72 can refer to the above description of the live line dynamic elastic member 71, and the structure and arrangement of the neutral line plug member 82 can refer to the above description of the live line plug member 81, which will not be repeated here.

[0152] By arranging the structure and assembly method of the neutral line dynamic elastic part 72 and the neutral line plug part 82 as above, the two are compactly matched on one side of the linkage part 3, which not only enables the neutral line dynamic contact 720 and the neutral line static contact 820 to cooperate efficiently to provide a neutral line breakpoint, but also can cooperate with other plug parts to form a three-pole plug structure.

[0153] The housing 1 is used to protect, support and position the above-mentioned components. Figure 1 and attached Figure 2 As shown, the housing 1 includes: a base 11, an upper cover 12 and a bracket 13; the upper cover 12 is connected to the base 11 to form a receiving cavity, and the bracket 13 is located in the receiving cavity. Figure 3 It can be seen that the bracket 13 can at least support and position the linkage member 3, the tripping drive member 5, the circuit board 6, the live line dynamic elastic member 71 and the neutral line dynamic elastic member 72.

[0154] The base 11 and the upper cover 12 are connected to form the outer shell 1 of the leakage protection plug, wherein the upper end of the reset member 2 passes through the upper cover 12 to the top thereof so as to be pressed by the user.

[0155] By arranging a bracket 13 in the accommodating cavity of the housing 1, the linkage member 3, the tripping drive member 5, the circuit board 6, the live line dynamic elastic member 71 and the neutral line dynamic elastic member 72 are supported and positioned to ensure that the above components can be stably assembled.

[0156] In some examples, the bracket 13 is fixedly connected to the base 11 . For example, a slot is provided inside the base 11 , and the bracket 13 is inserted into the slot.

[0157] Bracket 13 includes multiple positioning cavities. The linkage member 3, trip actuator 5, live line dynamic elastic member 71, and neutral line dynamic elastic member 72 are each assembled within a corresponding positioning cavity. The positioning cavity design allows the movable components therein to perform corresponding movements without interference. Furthermore, support ribs and positioning ribs can be provided within each positioning cavity, using the support ribs to support the corresponding components and the positioning ribs to position the corresponding components, thereby achieving both support and positioning effects.

[0158] The bracket 13 is located below the circuit board 6. In some examples, a plurality of positioning ribs are provided at the top of the bracket 13, and a plurality of positioning grooves are provided at corresponding positions on the circuit board 6. The circuit board 6 is horizontally overlapped with the top of the bracket 13 and positioned by inserting the positioning ribs into the positioning grooves.

[0159] In some implementations, such as the attached Figure 1 and attached Figure 2 As shown, the leakage protection plug provided in an embodiment of the present invention includes a test piece 9, which is electrically connected to the circuit board 6; the test piece 9 is configured so that it can be triggered to provide a leakage test current, thereby causing the tripping drive 5 to perform a tripping action.

[0160] By arranging the test piece 9, the leakage current can be simulated to test the leakage protection plug, and whether the leakage protection function thereof is normal is tested, thereby improving the operation reliability of the leakage protection plug.

[0161] In some examples, the test piece 9 is pressable and includes at least a test button, a test button and a test lead. The test button is electrically connected to the circuit board 6, and the circuit board 6 is also electrically connected to the transformer. The test lead passes through the transformer. Of course, the live wire and the neutral wire also pass through the transformer.

[0162] When the line is operating normally, the vector sum on the line passing through the transformer is zero. When there is leakage current in the line, the transformer detects that the above vector sum is not zero, and then the transformer transmits the signal to the circuit board 6. The circuit board 6 determines whether the leakage current reaches the specified threshold. If so, the circuit board 6 supplies power to the tripping driver 5, and the tripping driver 5 performs the tripping action, thereby unlocking the tripping member 4 and the reset member 2.

[0163] It can be understood that the circuit board 6 is electrically connected to at least the above-mentioned test piece 9, mutual inductor, tripping driver 5, live wire dynamic elastic member 71, neutral wire dynamic elastic member 72, and ground wire dynamic elastic member 73.

[0164] In conjunction with the structure of the leakage protection plug provided in the embodiment of the present invention, the working principle thereof is exemplarily described below:

[0165] When the leakage protection plug is connected, Figure 4As shown, the reset member 2 and the trip member 4 are locked, and the linkage member 3 is simultaneously locked and presses upward against the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72, causing the live wire dynamic contact 710 to contact the live wire static contact 810. Furthermore, the reset member 2 has descended a certain distance relative to its upper limit position, causing both the first elastic member 22 and the second elastic member 23 to be compressed. The ground wire dynamic elastic member 73 is pressed downward by the second elastic member 23 and deformed, thereby pressing down the ground wire dynamic contact 730, causing it to tightly contact the ground wire static contact 830 below.

[0166] When the leakage protection plug performs leakage protection operation, that is, the leakage protection plug switches from the on state to the off state. The tripping drive member 5 performs the tripping action, and its movable iron core 50 overcomes the action of its internal compression spring under the action of electromagnetic force, driving the tripping member 4 to retract in the horizontal direction until the locking portion 41 on the tripping member 4 exits the locking groove 20 on the reset member 2 (as shown in FIG. Figure 5 As shown, the tripping member 4 moves to the right, and the reset member 2 and the tripping member 4 are no longer locked, achieving unlocking. Since the linkage member 3 is also unlocked, in this state, the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72 move downward and press down on the corresponding abutment portion 32 on the linkage member 3, separating the live wire moving contact 710 from the live wire static contact 810.

[0167] After the reset member 2 is unlocked from the trip member 4, the compressed first elastic member 22 and the second elastic member 23 are reset, and the reset member 2 resets upward to the upper limit position. At this time, the second elastic member 23 is also reset accordingly, so that its pressure on the ground dynamic elastic member 73 is reduced, and the downward pressure on the ground dynamic elastic member 73 is reduced, so that the ground dynamic elastic member 73 is reset upward, and then the ground dynamic contact 730 is reset upward together, so that it is separated from the ground static contact 830 below.

[0168] It can be seen that during the disconnection process of the leakage protection plug, the live wire contact pair and the neutral wire contact pair are disconnected before the ground wire contact pair.

[0169] After the line maintenance is completed and the line fault is eliminated, reset the leakage protection plug to switch it from the disconnected state to the connected state. Figure 6 As shown, the reset member 2 is pressed downward, causing it to move downward. The pressed reset member 2 presses against the grounding dynamic elastic member 73 to bring the grounding dynamic contact 730 into contact with the grounding static contact 830. During the downward pressing movement of the reset member 2, the locking groove 20 thereon also moves downward. When the locking groove 20 moves to face the locking portion 41 of the tripping member 4, under the elastic force of the internal compression spring of the tripping driver 5, its movable iron core 50 drives the tripping member 4 to extend horizontally (the tripping member 4 moves to the left), and the locking portion 41 enters the locking groove 20, thereby re-locking the reset member 2 and the tripping member 4.

[0170] Then, the pressure on the reset member 2 is released, the reset member 2 resets and moves together with the linkage member 3 through the trip member 4, and the moving linkage member 3 drives the live wire dynamic elastic member 71 and the neutral wire dynamic elastic member 72, so that the live wire moving contact 710 contacts the live wire static contact 810, and the neutral wire moving contact 720 contacts the neutral wire static contact 820, and the reset member 2 resets and moves to the line connection position, the ground wire moving contact 730 still maintains contact with the ground wire static contact 830, and the leakage protection plug can be reset to the connected state.

[0171] It can be seen that during the connection process of the leakage protection plug, the ground wire contact pair is connected before the live wire contact pair and the neutral wire contact pair.

[0172] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0173] The above description is only for the purpose of facilitating those skilled in the art to understand the technical solution of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A leakage protection plug, characterized in that: The leakage protection plug comprises: a housing (1), a reset member (2) assembled on the housing (1), a linkage member (3), a release member (4), a release drive member (5), a circuit board (6), a live wire dynamic elastic member (71), a neutral wire dynamic elastic member (72), a ground wire dynamic elastic member (73), a live wire plug member (81), a neutral wire plug member (82), and a ground wire plug member (83); The two ends of the tripping member (4) are respectively connected to the linkage member (3) and the tripping driving member (5), and when the leakage protection plug is in the on state, the tripping member (4) and the reset member (2) are locked with each other, and when the leakage protection plug is in the off state, the tripping member (4) and the reset member (2) are released from being locked. The live wire dynamic elastic member (71) and the neutral wire dynamic elastic member (72) are both electrically connected to the circuit board (6) and respectively abut against the linkage member (3); the live wire dynamic elastic member (71) has a live wire dynamic contact (710) corresponding to the live wire static contact (810) provided on the live wire plug member (81); and the neutral wire dynamic elastic member (72) has a neutral wire dynamic contact (720) corresponding to the neutral wire static contact (820) provided on the neutral wire plug member (82); The ground wire dynamic elastic member (73) is electrically connected to the circuit board (6) and abuts against the reset member (2), and the ground wire dynamic elastic member (73) has a ground wire dynamic contact (730) corresponding to the ground wire static contact (830) provided on the ground wire plug member (83); The leakage protection plug is configured such that, by pressing the reset member (2), the trip member (4) and the reset member (2) can be switched from an unlocked state to a locked state, so that the reset member (2) presses against the ground wire dynamic elastic member (73) to bring the ground wire dynamic contact (730) into contact with the ground wire static contact (830); and After the pressing is released, the reset member (2) resets and links the linkage member (3) via the trip member (4), and the moving linkage member (3) further drives the live line dynamic elastic member (71) and the neutral line dynamic elastic member (72), so that the live line dynamic contact (710) contacts the live line static contact (810), and the neutral line dynamic contact (720) contacts the neutral line static contact (820); The first end of the release member (4) has a locking portion (41) and a connecting portion (42), the locking portion (41) cooperates with the locking groove (20) provided on the reset member (2) to be locked, and the connecting portion (42) is connected to the linkage member (3); and the second end of the release member (4) is movably connected to the release driving member (5); The tripping member (4) is configured to be able to move in a horizontal direction under the driving action of the tripping driving member (5), so that the locking portion (41) enters or exits the locking groove (20), and to be able to move in a vertical direction together with the linkage member (3) relative to the tripping driving member (5); The linkage member (3) has a first through hole (301), a second through hole (302) and a connecting hole (303), the first through hole (301) vertically passes through the linkage member (3), the second through hole (302) is located on a first side of the linkage member (3) and is in communication with the first through hole (301), and the connecting hole (303) extends in a horizontal direction and passes through at least the first side of the linkage member (3); The linkage member (3) is movably sleeved on the outside of the reset rod (21) of the reset member (2) through the first through hole (301), the linkage member (3) is connected to the connecting portion (42) through the connecting hole (303), and the second through hole (302) is used to accommodate the locking portion (41).

2. The leakage protection plug according to claim 1, characterized in that: The reset member (2) comprises: a reset rod (21), a first elastic member (22) and a second elastic member (23); The side wall of the reset rod (21) located above the circuit board (6) is provided with a stop block (210), and the side wall of the reset rod (21) located below the circuit board (6) is provided with the locking groove (20); The first elastic member (22) is sleeved on the reset rod (21) and located between the stop block (210) and the circuit board (6), and is used to apply an upward force to the reset rod (21); The ground-line dynamic elastic member (73) is located below the reset rod (21), and the second elastic member (23) is located between the reset rod (21) and the ground-line dynamic elastic member (73), and is used to apply an upward force to the reset rod (21) and a downward force to the ground-line dynamic elastic member (73).

3. The leakage protection plug according to claim 1, characterized in that: The linkage member (3) comprises: a linkage main body portion (31) and two abutment portions (32); The first through hole (301), the second through hole (302) and the connecting hole (303) are all located in the linkage main body (31); The two abutting portions (32) are respectively connected to the second side and the third side of the linkage main body (31) distributed in the horizontal direction, and the two abutting portions (32) are respectively in corresponding abutment with the live line dynamic elastic member (71) and the neutral line dynamic elastic member (72).

4. The leakage protection plug according to claim 2, characterized in that: The ground wire moving contact (730) is located at the bottom of one end of the ground wire moving elastic member (73), the ground wire static contact (830) is located at the top of one end of the ground wire plug member (83), and the ground wire static contact (830) is located below the ground wire moving contact (730); When the ground wire static contact (830) contacts the ground wire moving contact (730), the ground wire moving elastic member (73) is pressed down by the second elastic member (23) and deformed; When the ground wire static contact (830) is separated from the ground wire moving contact (730), the ground wire moving elastic member (73) is reset upward.

5. The leakage protection plug according to claim 4, characterized in that: The ground wire dynamic elastic member (73) comprises: a ground wire elastic segment (731) and a ground wire connecting segment (732) connected to each other, the ground wire elastic segment (731) being arranged in a horizontal direction, and the ground wire dynamic contact (730) being located at the bottom of one end of the ground wire elastic segment (731) away from the ground wire connecting segment (732); the ground wire elastic segment (731) also abuts against the lower end of the second elastic member (23), and the ground wire connecting segment (732) is electrically connected to the circuit board (6) and is used to connect the ground wire; The ground wire plug member (83) comprises: a ground wire plug section (831) and a ground wire contact support section (832) connected to each other, the ground wire plug section (831) being arranged in a vertical direction, the ground wire contact support section (832) being arranged in a horizontal direction, and the ground wire static contact (830) being located at the top of one end of the ground wire contact support section (832) away from the ground wire plug section (831).

6. The leakage protection plug according to claim 3, characterized in that: The live wire moving contact (710) is located at the top of one end of the live wire moving elastic member (71), the live wire static contact (810) is located at the bottom of one end of the live wire plug member (81), and the live wire static contact (810) is located above the live wire moving contact (710); When the live wire static contact (810) contacts the live wire moving contact (710), the live wire moving elastic member (71) is pressed upward by the corresponding abutment portion (32) and deformed; When the live wire static contact (810) is separated from the live wire moving contact (710), the live wire moving elastic member (71) is reset downward and presses down the corresponding abutment portion (32).

7. The leakage protection plug according to claim 6, characterized in that: The live wire dynamic elastic member (71) comprises: a live wire elastic segment (711), a first live wire transition segment (712) and a live wire connecting segment (713) connected in sequence, the live wire elastic segment (711) being arranged in a horizontal direction, the live wire connecting segment (713) being arranged in a vertical direction, and the live wire dynamic contact (710) being located at the top of one end of the live wire elastic segment (711) away from the first live wire transition segment (712); The live wire bullet segment (711) abuts against the top wall of the corresponding abutment portion (32), and the live wire connecting segment (713) is electrically connected to the circuit board (6) and is used to connect the live wire; The live wire plug component (81) comprises: a live wire plug section (811), a second live wire transition section (812) and a live wire contact support section (813) connected to each other; the live wire plug section (811) is arranged in a vertical direction; the live wire contact support section (813) is arranged in a horizontal direction; and the live wire static contact (810) is located at the bottom of one end of the live wire contact support section (813) away from the second live wire transition section (812).

8. The leakage protection plug according to claim 3, characterized in that: The neutral line moving contact (720) is located at the top of one end of the neutral line moving elastic member (72), the neutral line static contact (820) is located at the bottom of one end of the neutral line plug member (82), and the neutral line static contact (820) is located above the neutral line moving contact (720); When the neutral line static contact (820) contacts the neutral line dynamic contact (720), the neutral line dynamic elastic member (72) is pressed upward by the corresponding abutment portion (32) and deformed; When the neutral line static contact (820) is separated from the neutral line moving contact (720), the neutral line moving elastic member (72) is reset downward and presses down the corresponding abutment portion (32).

9. The leakage protection plug according to claim 8, characterized in that: The zero line dynamic elastic member (72) comprises: a zero line elastic segment (721), a first zero line transition segment (722), and a zero line connection segment (723) connected in sequence, the zero line elastic segment (721) being arranged in a horizontal direction, the zero line connection segment (723) being arranged in a vertical direction, and the zero line dynamic contact (720) being located at the top of one end of the zero line elastic segment (721) away from the first zero line transition segment (722); The neutral wire spring segment (721) abuts against the top wall of the corresponding abutment portion (32), and the neutral wire connecting segment (723) is electrically connected to the circuit board (6) and is used to connect the neutral wire; The neutral line plug member (82) comprises: a connected neutral line plug section (821), a second neutral line transition section (822) and a neutral line contact support section (823); the neutral line plug section (821) is arranged in a vertical direction; the neutral line contact support section (823) is arranged in a horizontal direction; and the neutral line static contact (820) is located at the bottom of one end of the neutral line contact support section (823) away from the second neutral line transition section (822).

10. The leakage protection plug according to claim 1, characterized in that: The housing (1) comprises: a base (11), an upper cover (12) and a bracket (13); The upper cover (12) is connected to the base (11) to form a receiving cavity, and the bracket (13) is located in the receiving cavity. The bracket (13) is capable of at least supporting and positioning the linkage member (3), the tripping drive member (5), the circuit board (6), the live line dynamic elastic member (71), and the neutral line dynamic elastic member (72).

11. The leakage protection plug according to any one of claims 1 to 10, characterized in that: The leakage protection plug includes a test piece (9), and the test piece (9) is electrically connected to the circuit board (6); The test piece (9) is configured such that it can be triggered to provide a leakage test current, thereby causing the tripping drive (5) to perform a tripping action.

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