A tripping device for a leakage protection socket

Abstract

A tripping device for a leakage protection socket, belonging to the technical field of leakage protection devices. It includes a tripping mechanism and a circuit board assembled above the tripping mechanism and electrically connected to the output end of the tripping mechanism. Features: A base is snap-connected below the tripping mechanism, and an external connection terminal is provided below the base. An external input board is respectively connected to the external connection terminal. After being bent, the external input board respectively passes through the base and extends upward to be electrically connected to the input end of the tripping mechanism. Plug connection holes are respectively opened beside the positions where the circuit board is electrically connected to the output end of the tripping mechanism. Advantages: It can quickly assemble the input end at the lower end with the socket in place and enable the pins to be quickly soldered on the circuit board above, effectively improving the assembly efficiency of the socket; reducing the installation difficulty and improving the heat dissipation capacity.

Description

Technical Field

[0001] The present invention belongs to the technical field of leakage protection devices, and particularly relates to a tripping device for a leakage protection socket. Background Art

[0002] With the development of technology, there are more and more electrical appliances and electronic products used in people's lives. In order to reduce the risk of safety accidents caused by leakage of electrical appliances and other products, people usually assemble leakage protection devices on some high-power electrical appliances. For some electrical appliances and electronic products with relatively low power, manufacturers will choose not to assemble leakage protection devices due to low safety risks, cost control, and plug volume. As a result, some wall sockets with leakage protection functions have emerged on the market. These sockets basically adopt a protection structure in which an armature drives a reset button to trip during leakage, so that the moving contact is separated from the static contact. As is well known, the size of wall sockets generally has strict regulations, and the space inside the socket is also limited. However, most of the current tripping devices have complex and non-compact structures, and it is even more difficult to connect with the plug pins after being placed in the socket. This results in the inability to install some tripping devices as a whole, and it is often necessary to connect the tripping mechanism and the circuit board to the components inside the socket separately and then assemble them. In addition, due to the relatively crowded space inside the socket and the fact that the socket is often used for a long time, the tripping device generates heat but the heat dissipation is relatively slow. Over time, the leakage protector will malfunction due to overheating, and it cannot trip normally during leakage, leading to safety accidents.

[0003] In the prior art, such as the "leakage protector" involved in the Chinese invention patent authorization announcement number CN107818890B, and the "residual current grounding fault leakage protection socket with forced tripping" provided by the Chinese invention patent authorization announcement number CN103268844B. Although the former has a relatively compact structure, its input end and output end are not adapted to the socket, and it is difficult to connect with the plug pins and the external power supply; while the latter has a relatively loose structure and occupies a large space, which is not conducive to the installation and heat dissipation of the protection device, and both have some of the above-mentioned problems, so they cannot meet the needs of consumers.

[0004] In view of the above situation, it is necessary to design a tripping device for a leakage protection socket with a compact structure, easy to assemble, small occupied space, and capable of quickly connecting with the socket and the plug pins. For this reason, the applicant has made a beneficial design, and the technical solution to be introduced below is generated under this background. Summary of the Invention

[0005] The object of the present invention is to provide a tripping device for a leakage protection socket, which helps to improve the structures of the input end and the output end to facilitate the connection of the tripping device with the socket and the plug pins, effectively improves the assembly efficiency of the socket, is conducive to optimizing the overall structure of the device to improve the compactness of the product and reduce the occupied space, effectively reduces the installation difficulty of the device and improves the heat dissipation capacity.

[0006] The object of the present invention is achieved in the following way. A tripping device for a leakage protection socket includes a tripping mechanism and a circuit board assembled above the tripping mechanism and electrically connected to the output end of the tripping mechanism. It is characterized in that: a base is snap-connected below the tripping mechanism, an external terminal pair is arranged below the base, an external input board is respectively connected to the external terminal pair, and after being bent, the external input boards respectively pass through the base and extend upward to be electrically connected to the input end of the tripping mechanism, and pin connection holes are respectively formed beside the positions where the circuit board is electrically connected to the output end of the tripping mechanism.

[0007] In a specific embodiment of the present invention, the tripping mechanism includes a tripping seat, a coil, a locking piece, a pressing block, a reset key, a current transformer, a pair of tripping input plates and a pair of tripping output plates. A coil cavity is formed at the rear end of the tripping seat, and the coil is embedded in the coil cavity. The tripping seat forms a locking piece cavity at the front end of the coil cavity, and the locking piece is arranged in the locking piece cavity. An armature is slidably arranged in the coil, and an armature clamping groove is formed at the end of the armature. One end of the locking piece forms an armature clamping foot that extends upward and is clamped in the armature clamping groove, and the other end of the locking piece forms a locking foot that extends forward. The tripping seat forms a pressing block cavity at the position in front of the locking piece cavity, and the pressing block is arranged to slide up and down in the pressing block cavity. A pair of locking foot clamping grooves are formed on the side of the pressing block facing the locking piece. A pressing foot is respectively arranged on the left and right sides of the pressing block, and a pressing foot relief groove is respectively formed at the positions on the left and right sides of the pressing block cavity corresponding to the pressing feet. The pressing feet slide up and down along the pressing foot relief grooves. The reset key is arranged above the tripping seat and at a position corresponding to the pressing block cavity. A reset rod extends downward from the reset key, passes through the tripping seat downward and is snap-connected to the locking foot through a reset clamping groove. A reset spring is arranged between the lower part of the reset key and the tripping seat. A reset rod limiting column that cooperates with the base is formed at the lower end of the reset rod. A current transformer fixing plate extends forward in the middle of the front end of the tripping seat, and the current transformer is sleeved on the current transformer fixing plate and electrically connected to the circuit board. Input plate clamping grooves are respectively formed on both sides of the current transformer fixing plate of the tripping seat. The tripping input plates are respectively arranged at the positions between the current transformer and the current transformer fixing plate and are respectively clamped in the corresponding input plate clamping grooves. A static contact is respectively arranged at one end of the tripping input plate. The other ends of the tripping input plates are bent and are respectively located at positions above the corresponding external input plates. Output plate clamping grooves are respectively formed on the left and right sides of the rear end of the tripping seat. One end of the tripping output plate extends upward and passes through the corresponding output plate clamping groove and is soldered to a pair of tripping output plate connection holes formed on the circuit board. The other ends of the tripping output plates respectively extend forward and a moving contact that cooperates with the static contact is arranged at the end. Spring seats with openings downward are respectively formed at the positions in the middle above the corresponding tripping output plates of the tripping seat, and a tripping spring that abuts against the corresponding tripping output plate is respectively arranged in the spring seats.

[0008] In another specific embodiment of the present invention, circuit board clamping feet respectively extend upward from the left and right sides of the tripping seat, and a group of circuit board limiting columns respectively protrude upward from the upper surface of the tripping seat. The circuit board abuts against the upper surface of the tripping seat, and a circuit board limiting hole for the circuit board limiting column is respectively formed at the position of the circuit board corresponding to the circuit board limiting column. The circuit board clamping feet are respectively clamped at the edges on both sides of the circuit board.

[0009] In yet another specific embodiment of the present invention, on the left and right sides of the lower end of the trip seat, a base card slot is respectively formed. At positions corresponding to the base card slots on the base, a base card foot is respectively formed upward. The base card feet are clamped on the base card slots from the left and right sides. On the left and right sides of the lower end of the trip seat, a limiting boss is respectively protruded downward. At positions corresponding to the limiting bosses on the base, a base limiting groove is respectively opened. In the base limiting groove, a base limiting boss is protruded upward. At the position corresponding to the base limiting boss on the limiting boss, a base limiting hole is formed. On the front end face of the trip seat on the base, a pair of baffles is formed upward. At the position corresponding to the reset rod limiting column on the base, a reset rod limiting seat is formed upward. The reset rod limiting column is inserted into the reset rod limiting seat and moves up and down.

[0010] In yet another specific embodiment of the present invention, a layer of expansion sheet is compounded on the upper surface of the trip output plate, so that the trip output plate forms a bimetallic sheet structure.

[0011] In still another specific embodiment of the present invention, on the left and right sides of the front end of the base, an external input board guiding seat is respectively formed upward. On the external input board guiding seats, an external input board slot is respectively opened. The external input boards respectively pass through the corresponding external input board slots from bottom to top and are connected to the trip mechanism.

[0012] In yet another further specific embodiment of the present invention, an external terminal card slot is respectively formed at the lower end of the base. The external terminals are clamped in the external terminal card slots. At the positions corresponding to the external input boards at the lower end of the base and at the connection with the external terminal card slots, an external input board relief groove is respectively opened.

[0013] In yet another even further specific embodiment of the present invention, an external terminal screw is respectively arranged on the external terminals. The external terminal screws respectively abut against one end of the corresponding external input board.

[0014] In yet another further specific embodiment of the present invention, a pair of varistor connection holes is opened on the circuit board. A varistor is connected to the varistor connection holes. The varistor forms a pair of varistor connection feet upward. The varistor connection feet pass through the varistor connection holes upward and are soldered and fixed to the circuit board.

[0015] In yet another even further specific embodiment of the present invention, an indicator light is arranged at the middle position of the circuit board.

[0016] After the present invention adopts the above structure, it has the following beneficial effects: First, due to the adoption of the connection structure of the upper, middle and lower three layers of the circuit board, the tripping mechanism and the base, which are buckled with each other, and the structure of setting the input end at the lower end of the base and the output end on the circuit board, the input end located at the lower end can be quickly assembled with the socket in place, and the pins can be quickly soldered on the upper circuit board, effectively improving the assembly efficiency of the socket; Second, the adoption of the three-layer structure of the upper, middle and lower layers can make the device more compact and reduce the occupied space, effectively reducing the installation difficulty of the product and improving the heat dissipation capacity at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic perspective view of an embodiment of the present invention.

[0018] Figure 2 It is a schematic perspective view of the driving device of the present invention.

[0019] In the figure: 1. Tripping mechanism, 11. Tripping seat, 111. Coil cavity, 112. Lock piece cavity, 113. Pressure block cavity, 1131. Pressure foot relief groove, 114. Transformer fixing plate, 115. Input board card slot, 116. Output board card slot, 117. Spring seat, 118. Circuit board card foot, 1181. Circuit board limit post, 119. Base card slot, 1191. Limit boss, 1192. Base limit hole, 12. Coil, 121. Armature, 1211. Armature card slot, 13. Lock piece, 131. Armature card foot, 132. Lock foot, 14. Pressure block, 141. Lock foot card slot, 142. Pressure foot, 15. Reset key, 151. Reset rod, 1511. Reset rod limit post, 152. Reset card slot, 153. Reset spring, 16. Transformer, 17. Tripping input board, 171. Static contact, 18. Tripping output board, 181. Moving contact, 182. Tripping spring, 183. Expansion piece; 2. Circuit board, 21. Pin connection hole, 22. Tripping output board connection hole, 23. Circuit board limit hole, 24. Indicator light, 25. Varistor connection hole; 3. Base, 31. Base card foot, 32. Base limit groove, 321. Base limit boss, 33. Baffle, 34. Reset rod limit seat, 35. External input board guide seat, 351. External input board slot, 36. External terminal card slot, 37. External input board relief groove; 4. External terminal, 41. External input board, 42. External terminal screw; 5. Varistor, 51. Varistor connection foot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will describe in detail the specific embodiments of the present invention with reference to the drawings. However, the description of the embodiments is not a limitation of the technical solution. Any change in form rather than in substance based on the concept of the present invention should be regarded as the protection scope of the present invention.

[0021] In the following description, all concepts related to the directionality or orientation of up, down, left, right, front, and back are with respect to the position state being described, and thus should not be construed as a particular limitation on the technical solution provided by the present invention. Figure 1 Accordingly, it should not be construed as a particular limitation on the technical solution provided by the present invention.

[0022] Please refer to Figure 1 and Figure 2 , the present invention relates to a tripping device for a leakage protection socket, comprising a tripping mechanism 1 and a circuit board 2 assembled above the tripping mechanism 1 and electrically connected to the output end of the tripping mechanism 1. The characteristics are as follows: A base 3 is snap-connected below the aforementioned tripping mechanism 1. An external connection terminal 4 is provided below the base 3. An external input board 41 is respectively connected to the aforementioned external connection terminal 4. After being bent, the aforementioned external input board 41 respectively passes through the base 3 and extends upward to be electrically connected to the input end of the tripping mechanism 1. The aforementioned circuit board 2 is respectively provided with a pin connection hole 21 beside the position electrically connected to the output end of the tripping mechanism 1. On the left and right sides of the front end of the base 3, an external input board guiding seat 35 is respectively formed upward. The aforementioned external input board guiding seat 35 is respectively provided with an external input board slot 351. The aforementioned external input board 41 respectively passes through the corresponding external input board slot 351 from bottom to top to be connected to the tripping mechanism 1. The lower end of the aforementioned base 3 respectively forms an external connection terminal card slot 36. The aforementioned external connection terminal 4 is clamped in the external connection terminal card slot 36. The lower end of the aforementioned base 3 is respectively provided with an external input board relief groove 37 at the position corresponding to the external input board 41 and at the connection with the external connection terminal card slot 36.

[0023] In this embodiment, the aforementioned tripping mechanism 1 includes a tripping seat 11, a coil 12, a locking piece 13, a pressing block 14, a reset key 15, a current transformer 16, a pair of tripping input plates 17 and a pair of tripping output plates 18. A coil cavity 111 is formed at the rear end of the tripping seat 11, and the aforementioned coil 12 is embedded in the coil cavity 111. The tripping seat 11 forms a locking piece cavity 112 at the front end of the coil cavity 111, and the aforementioned locking piece 13 is arranged in the locking piece cavity 112. An armature 121 is slidably arranged in the coil 12, and an armature card slot 1211 is formed at the end of the armature 121. One end of the aforementioned locking piece 13 forms an armature card foot 131 that extends upward and is clamped in the armature card slot 1211, and the other end of the locking piece 13 forms a locking foot 132 that extends forward. The tripping seat 11 forms a pressing block cavity 113 at the position of the front end of the locking piece cavity 112, and the aforementioned pressing block 14 is arranged to slide up and down in the pressing block cavity 113. A pair of locking foot card slots 141 are formed on the side of the pressing block 14 facing the locking piece 13. Pressing feet 142 are respectively arranged on the left and right sides of the pressing block 14. Pressing foot relief slots 1131 are respectively formed at the positions of the left and right sides of the pressing block cavity 113 corresponding to the pressing feet 142, and the pressing feet 142 slide up and down along the pressing foot relief slots 1131. The aforementioned reset key 15 is arranged above the tripping seat 11 and at a position corresponding to the pressing block cavity 113. A reset rod 151 extends downward from the reset key 15. The reset rod 151 passes through the tripping seat 11 downward and is snap-connected to the locking foot 132 through a reset card slot 152. A reset spring 153 is arranged between the lower part of the reset key 15 and the tripping seat 11. A reset rod limiting post 1511 that cooperates with the base 3 is formed at the lower end of the reset rod 151. A current transformer fixing plate 114 extends forward from the middle of the front end of the tripping seat 11. The aforementioned current transformer 16 is sleeved on the current transformer fixing plate 114 and is electrically connected to the circuit board 2. Input plate card slots 115 are respectively formed on both sides of the current transformer fixing plate 114 of the tripping seat 11. The aforementioned tripping input plates 17 are respectively arranged at the positions between the current transformer 16 and the current transformer fixing plate 114 and are respectively clamped in the corresponding input plate card slots 115. Static contacts 171 are respectively arranged at one end of the tripping input plates 17. The other ends of the tripping input plates 17 are bent and are respectively located above the corresponding external input plates 41. Output plate card slots 116 are respectively formed on the left and right sides of the rear end of the tripping seat 11. One end of the aforementioned tripping output plates 18 extends upward and respectively passes through the corresponding output plate card slots 116 and is soldered to a pair of tripping output plate connection holes 22 formed on the circuit board 2. The other ends of the tripping output plates 18 respectively extend forward and a moving contact 181 that cooperates with the static contact 171 is arranged at the end. Spring seats 117 with downward openings are respectively formed at the positions corresponding to the middle parts above the tripping output plates 18 on the tripping seat 11.A tripping spring 182 that abuts against the corresponding tripping output plate 18 is respectively provided inside the aforementioned spring seat 117.

[0024] Please refer to Figure 1 On the left and right sides of the aforementioned tripping seat 11, a circuit board pin 118 is respectively formed upward. On the upper surface of the aforementioned tripping seat 11, a set of circuit board limiting posts 1181 are respectively convex upward. The aforementioned circuit board 2 abuts against the upper surface of the tripping seat 11. At the positions corresponding to the circuit board limiting posts 1181 on the circuit board 2, a circuit board limiting hole 23 for the circuit board limiting post 1181 is respectively opened. The aforementioned circuit board pins 118 are respectively clamped at the edges on the left and right sides of the circuit board 2.

[0025] Please refer to Figure 2 and in combination with Figure 1 On the left and right side edges at the lower end of the aforementioned tripping seat 11, a base card slot 119 is respectively formed. On the base 3 at the positions corresponding to the base card slots 119, a base card pin 31 is respectively formed upward. The aforementioned base card pins 31 are clamped on the base card slots 119 from the left and right sides. On the left and right sides at the lower end of the tripping seat 11, a limiting boss 1191 is respectively convex downward. On the base 3 at the positions corresponding to the limiting bosses 1191, a base limiting groove 32 is respectively opened. An upward convex base limiting boss 321 is provided inside the aforementioned base limiting groove 32. A base limiting hole 1192 is formed at the position of the limiting boss 1191 corresponding to the base limiting boss 321. On the front end face position of the tripping seat 11 on the base 3, a pair of baffles 33 are formed upward. On the base 3 at the position corresponding to the reset rod limiting post 1511, a reset rod limiting seat 34 is formed upward. The aforementioned reset rod limiting post 1511 is inserted into the reset rod limiting seat 34 and moves up and down.

[0026] In this embodiment, a layer of expansion sheet 183 is compounded on the upper surface of the aforementioned tripping output plate 18, making the tripping output plate 18 form a bimetallic sheet structure.

[0027] Further, an external terminal screw 42 is respectively provided on the aforementioned external terminal 4, and the aforementioned external terminal screws 42 respectively abut against one end of the corresponding external input board 41.

[0028] Please continue to refer to Figure 1 On the aforementioned circuit board 2, a pair of varistor connection holes 25 are opened. A varistor 5 is connected to the aforementioned varistor connection holes 25. The varistor 5 forms a pair of varistor connection pins 51 upward. The aforementioned varistor connection pins 51 pass upward through the varistor connection holes 25 and are soldered and fixed to the circuit board 2. An indicator light 24 is provided at the middle position of the aforementioned circuit board 2. The aforementioned varistor 5 can prevent the impact on the electrical appliance caused by excessive voltage fluctuation.

[0029] Please continue to refer to Figure 1 and in combination with Figure 2 , when assembling the leakage protection socket, place the device directly into the installation position, so that the aforementioned external terminal 4 extends out of the socket housing and presses the power cord against the external input board 41 through the external terminal screw 42. At this time, the conductive plate on the plug pin of the socket just inserts into the aforementioned plug pin connection hole 21 from bottom to top, and the conductive plate of the plug pin is connected to the trip output plate in the trip output plate connection hole 22 beside it through soldering, so as to realize the rapid installation of the device. When the electrical appliance leaks electricity, the aforementioned current transformer 16 generates current, and the current enters the coil 12 through the aforementioned circuit board 2. The aforementioned coil 12 is electrified to drive the armature 121 to drive the lock piece 13 to disengage from the reset card slot 152. The aforementioned reset key 15 pops up upward under the action of the reset spring 153. After the aforementioned pressure block 14 disengages from the reset card slot 152, it slides downward to separate the pressure foot 142 from the trip output plate 18. The aforementioned trip output plate 18 moves downward under the action of the trip spring 182 to separate the moving contact 181 from the static contact 171, so as to realize the leakage protection of the socket. When resetting is required, click the aforementioned reset key 15 downward to lock the reset card slot 152 with the lock piece 13. The aforementioned reset key 15 pops up upward under the restoring force of the reset spring 153, and drives the lock piece 13 and the pressure block 14 to slide upward together. During the sliding process of the aforementioned pressure block 14, the pressure foot 142 drives the moving contact 181 of the trip output plate 18 to close with the static contact 171, so as to realize the reset of the socket. When the temperature of the device rises and a failure may occur, the expansion piece 183 on the aforementioned trip output plate 18 expands, causing the trip output plate 18 to bend downward to separate the moving contact 181 from the static contact 171, so as to effectively protect the circuit and electrical appliances.

Claims

1. A tripping device for a leakage protection socket, comprising a tripping mechanism (1) and a circuit board (2) assembled above the tripping mechanism (1) and electrically connected to the output end of the tripping mechanism (1), characterized in that: A base (3) is snap-connected below the tripping mechanism (1). An external terminal pair (4) is arranged below the base (3). An external input board (41) is respectively connected to the external terminal (4). After being bent, the external input board (41) respectively passes through the base (3) and extends upward to be electrically connected to the input end of the tripping mechanism (1). Plug connection holes (21) are respectively formed beside the positions where the circuit board (2) is electrically connected to the output end of the tripping mechanism (1). The tripping mechanism (1) includes a tripping seat (11), a coil (12), a locking piece (13), a pressing block (14), a reset key (15), a mutual inductor (16), a pair of tripping input boards (17) and a pair of tripping output boards (18). A coil cavity (111) is formed at the rear end of the tripping seat (11). The coil (12) is embedded in the coil cavity (111). A locking piece cavity (112) is formed at the front end of the tripping seat (11) in the coil cavity (111). The locking piece (13) is arranged in the locking piece cavity (112). An armature (121) is slidably arranged in the coil (12). An armature clamping groove (1211) is formed at the end of the armature (121). An armature clamping foot (131) extending upward and clamped in the armature clamping groove (1211) is formed at one end of the locking piece (13). A locking foot (132) extending forward is formed at the other end of the locking piece (13). A pressing block cavity (113) is formed at the position of the front end of the locking piece cavity (112) of the tripping seat (11). The pressing block (14) is arranged to slide up and down in the pressing block cavity (113). A pair of locking foot clamping grooves (141) are formed on the side of the pressing block (14) facing the locking piece (13). Pressing feet (142) are respectively arranged on the left and right sides of the pressing block (14). Pressing foot relief grooves (1131) are respectively formed at the positions of the left and right sides of the pressing block cavity (113) corresponding to the pressing feet (142). The pressing feet (142) slide up and down along the pressing foot relief grooves (1131). The reset key (15) is arranged above the tripping seat (11) and corresponding to the pressing block cavity (113). A reset rod (151) extends downward from the reset key (15). The reset rod (151) passes through the tripping seat (11) downward and is snap-connected to the locking foot (132) through a reset clamping groove (152). A reset spring (153) is arranged between the lower part of the reset key (15) and the tripping seat (11). A reset rod limiting column (1511) cooperating with the base (3) is formed at the lower end of the reset rod (151). A mutual inductor fixing plate (114) extends forward in the middle of the front end of the tripping seat (11). The mutual inductor (16) is sleeved on the mutual inductor fixing plate (114) and is electrically connected to the circuit board (2). Input board clamping grooves (115) are respectively formed on both sides of the mutual inductor fixing plate (114) of the tripping seat (11).The described trip input board (17) is respectively disposed at the position between the mutual inductor (16) and the mutual inductor fixing plate (114) and is respectively clamped in the corresponding input board card slots (115). One end of each trip input board (17) is respectively provided with a static contact (171). The other end of the trip input board (17) is bent and is respectively located above the corresponding external input board (41). On the left and right sides at the rear end of the trip seat (11), an output board card slot (116) is respectively opened. One end of the trip output board (18) extends upward and respectively passes through the corresponding output board card slot (116) and is soldered to a pair of trip output board connection holes (22) opened on the circuit board (2). The other end of the trip output board (18) respectively extends forward and is provided with a moving contact (181) that cooperates with the static contact (171) at the end. The trip seat (11) respectively forms a spring seat (117) with a downward opening at the position corresponding to the middle above the trip output board (18). A trip spring (182) that abuts against the corresponding trip output board (18) is respectively disposed in the spring seat (117).

2. The tripping device of a leakage protection socket according to claim 1, characterized in that On the left and right sides of the trip seat (11), there is respectively formed an upward circuit board pin (118). On the upper surface of the trip seat (11), there is respectively protruded upward a set of circuit board limit posts (1181). The circuit board (2) abuts against the upper surface of the trip seat (11). At the positions corresponding to the circuit board limit posts (1181) on the circuit board (2), there are respectively opened a circuit board limit hole (23) for the circuit board limit post (1181). The circuit board pins (118) are respectively clamped at the edges on the left and right sides of the circuit board (2).

3. The trip device of a leakage protection socket according to claim 1, characterized in that On the left and right side edges at the lower end of the trip seat (11), there is respectively formed a base card slot (119). At the positions corresponding to the base card slots (119) on the base (3), there is respectively formed an upward base card pin (31). The base card pins (31) are clamped on the base card slots (119) from the left and right sides. On the left and right sides at the lower end of the trip seat (11), there are respectively protruded downward a limit boss (1191). At the positions corresponding to the limit bosses (1191) on the base (3), there are respectively opened a base limit groove (32). In the base limit groove (32), there is protruded upward a base limit boss (321). At the position corresponding to the base limit boss (321) on the limit boss (1191), there is formed a base limit hole (1192). At the front end face position of the trip seat (11) on the base (3), there are formed upward a pair of baffles (33). At the position corresponding to the reset rod limit post (1511) on the base (3), there is formed upward a reset rod limit seat (34). The reset rod limit post (1511) is inserted into the reset rod limit seat (34) and moves up and down therein.

4. The trip device of a leakage protection socket according to claim 1, characterized in that On the upper surface of the trip output board (18), there is laminated a layer of expansion sheet (183), making the trip output board (18) form a bimetallic sheet structure.

5. The trip device of a leakage protection socket according to claim 1, characterized in that On the left and right sides at the front end of the base (3), there is respectively formed an upward external input board guide seat (35). On the external input board guide seats (35), there are respectively opened an external input board slot (351). The external input boards (41) respectively pass through the corresponding external input board slots (351) from bottom to top and are connected to the trip mechanism (1).

6. The trip device of a leakage protection socket according to claim 1, characterized in that At the lower ends of the base (3), there are respectively formed an external terminal card slot (36). The external terminals (4) are clamped in the external terminal card slots (36). At the positions corresponding to the external input boards (41) at the lower ends of the base (3) and at the connection with the external terminal card slots (36), there are respectively opened an external input board relief groove (37).

7. The tripping device of an electric leakage protection socket according to claim 1, characterized in that On the external terminals (4), there are respectively provided an external terminal screw (42). The external terminal screws (42) respectively abut against one end of the corresponding external input board (41).

8. The trip device of a leakage protection socket according to claim 1, characterized in that A pair of varistor connection holes (25) are formed on the described circuit board (2), and a varistor (5) is connected to the varistor connection holes (25). The varistor (5) forms a pair of varistor connection legs (51) upwards, and the varistor connection legs (51) pass upwards through the varistor connection holes (25) and are soldered and fixed to the circuit board (2).

9. The trip device of a leakage protection socket according to claim 1, characterized in that An indicator light (24) is provided at the middle position of the circuit board (2).

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