WO2022141829A1

WO2022141829A1 - Leakage protection plug

Info

Publication number: WO2022141829A1
Application number: PCT/CN2021/082515
Authority: WO
Inventors: 田玉江
Original assignee: 余姚市中建电器有限公司
Priority date: 2020-12-30
Filing date: 2021-03-24
Publication date: 2022-07-07
Also published as: CN112467483A

Abstract

Provided is a leakage protection plug, comprising a housing (1), a pin assembly (5), a pin plate (6), a trip unit mounting frame, i.e., a trip frame (7) for short, a pressing arm (9), a locking connecting rod (10), a locking coil assembly (11), a reset button (12), a left moving contact structure (13), a right moving contact structure (14), a left static contact (15), a right static contact (16), and a circuit board (17). The leakage protection plug is characterized by: further comprising an indicator rod (8). Supporting columns (64) are located at openings of corresponding recesses (74) to form circular holes, a top enclosure of the housing is provided with a light-transmitting cover (4) for the top enclosure, a through hole (94) is further provided between two bearing arms (91), and a transverse shaft (95) is further provided in the through hole. The indicator rod (8) comprises a fork-shaped rotating arm (81), a rotating shaft (82), a vertical connecting rod (83) and an indicator board (84). A fork-shaped opening of the fork-shaped rotating arm is fitted to the transverse shaft of the through hole, and the other end of the fork-shaped rotating arm is connected the bottom end of the vertical connecting rod in an L-shaped manner. The rotating shaft is provided at the corner of the fork-shaped rotating arm and the vertical connecting rod. The left and right ends of the rotating shaft penetrate into the circular holes formed by the recesses and the supporting columns. The leakage protection plug has the advantage of accurately displaying the mechanism action state of the leakage protection plug when the plug is reset and trips, and thus is more in line with EU standards.

Description

Leakage protection plug

technical field

The invention relates to a leakage protection plug.

Background technique

The existing leakage protection plugs are shown in the patent application number 202010977573.5. The above products can achieve simple structure, easy assembly, stable and reliable operation, and can not only meet the requirements of phase loss protection, but also meet the requirements of the distance between the moving and static contacts ≥ 3mm. It meets the requirements of international general standards; but in use, it cannot display the mechanism action state of the leakage protection plug during reset work and tripping power-off, so it does not fully meet the EU standards.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a leakage protection plug, which can accurately display the mechanism action state during reset operation and tripping and power-off.

In order to achieve the above object, the present invention is realized in this way, which is a leakage protection plug, which includes a shell, a pin assembly, a pin pad, a tripping frame, a pressing arm, a locking link, a locking coil assembly, a reset button, a left A moving contact piece structure, a right moving contact piece structure, a left static contact piece, a right static contact piece and a circuit board; the pin assembly includes a left pin, a right pin and a pin frame, the pin frame is arranged in the casing, and the left pin and the right pins are respectively arranged on the pin pieces and pass out of the outer casing; the tripping frame is located in the casing, the circuit board is arranged on the tripping frame, and the pressing rod of the reset button passes through the circuit board and is on the tripping frame. The limit hole can move up and down, the left static contact piece and the right static contact piece are respectively arranged on the circuit board, the left static contact piece is electrically connected with the circuit board and the left pin respectively, the right static contact piece is respectively It is electrically connected with the circuit board and the right pin, and the left static contact piece is provided with a left static contact, and the right static contact piece is provided with a right static contact; the trip frame is respectively provided with a first installation The left and right sides of the second installation chamber are respectively provided with longitudinal sliding grooves, and the locking coil assembly is arranged in the first installation chamber and is electrically connected to the circuit board; the left moving contact piece structure It is arranged on the left rear side of the tripping frame, the left moving contact of the left moving contact piece structure can be electrically connected with the left static contact, and the right moving contact piece structure is arranged on the right rear side of the tripping frame, and the right moving contact piece The right movable contact of the contact piece structure is electrically connected with the right stationary contact; the lock link is matched with the iron core of the trip coil assembly, and the iron core can drive the lock link to move forward and backward; the pressure The arm is located in the second installation chamber, and symmetrical bearing arms are arranged on the left and right sides of the bottom of the pressing arm, and corresponding linkage shafts are arranged on the left and right sides of the upper part of the pressing arm, and the linkage shafts cooperate with the locking link. It can rotate and slide up and down at the same time. A lock is provided on the rear side of the upper part of the pressing arm. The pressing rod of the reset button passes between the left and right push-pull rods of the locking rod. The hook can be matched with the lock of the pressing arm, the bearing arms are respectively located in the longitudinal chute corresponding to the tripping frame and can move up and down, the left lateral elastic piece of the left moving contact piece structure is inclined downward and bears on the left side On the bearing arm, the right lateral elastic piece of the right movable contact piece structure is inclined downward and bears on the bearing arm on the right side, and the front and rear movement of the locking link can drive the pressing arm to rotate forward and backward with the bearing arm as the axis; The pin pad includes a limit frame, a limit column and a limit pad, the pin pad is arranged above the pin assembly, the limit frame and the limit column are arranged above the limit pad, and the tripping erection On the limit frame, the limit frame is located below the bearing arm, the limit column extends into the trip frame, the front side of the limit column abuts the rear side of the reset button, and the lock link It is supported on the limit post; it is characterized in that it also includes an indicator rod, the indicator rod is located in the casing, and grooves are respectively provided on the left and right sides of the bottom of the second installation chamber of the trip frame, and the The pin pads are respectively provided with two support columns, and the support columns are respectively located in the circular holes at the openings of the corresponding grooves. A through hole is also arranged between the through holes, and a horizontal shaft is also arranged in the through hole; the indicating rod includes a fork-shaped rotating arm, a rotating shaft , a vertical connecting rod and a signboard, the fork-shaped opening of the fork-shaped rotating arm is inserted on the horizontal axis of the through hole, and the other end of the fork-shaped rotating arm is connected with the bottom end of the vertical connecting rod in an L-shape, The rotating shaft is set at the intersection of the fork-shaped rotating arm and the corner of the vertical connecting rod. The left and right ends of the rotating shaft are respectively passed through the circular holes formed by the corresponding groove and the support column. The horizontal axis moves up and down to drive the fork-shaped rotating arm. Swing up and down along the rotating shaft, and at the same time link the vertical link and the sign to swing back and forth; the top of the vertical link passes through the second installation chamber and the circuit board, and the sign is arranged on the top of the vertical link and located on the surface Cover the underside of the translucent cover.

In this technical solution, the locking link further includes an upper longitudinal U-shaped opening provided at the rear end of the two push-pull rods and a lower longitudinal U-shaped chute provided at the front end of the two push-pull rods. The groove is sleeved in the upper longitudinal U-shaped opening to drive the lock link to move forward and backward; the linkage shaft can rotate and slide up and down simultaneously in the lower longitudinal U-shaped chute of the lock link, and the pressing rod of the reset button Pass between the left and right push-pull rods.

In this technical solution, a fork-shaped opening is provided on one end of the fork-shaped rotating arm, one end of the fork-shaped opening is inserted on the horizontal axis of the through hole, and the other end of the fork-shaped rotating arm is vertically aligned with the vertical axis. The bottom end of the connecting rod is connected in an L shape, the rotating shaft is arranged at the intersection of the fork-shaped rotating arm and the corner of the vertical connecting rod, and the indicating sign is arranged on the top of the vertical connecting rod.

In this technical solution, more than two hooks are provided at the bottom of the tripping frame, and the tripping frame is integrated with the pin pad through the hooks.

In this technical solution, the limit frame of the pin pad is located below the bearing arm, the limit post extends into the trip frame, the front side of the limit post abuts the rear side of the reset button, the The locking link is supported on the limit post.

In this technical solution, the left moving contact piece structure further includes a left installation position, the left installation position is arranged on the left rear side of the trip frame, one end of the left installation position is electrically connected to the circuit board, and the other side of the left installation position is electrically connected to the circuit board. One end is connected with one end of the left lateral elastic sheet and the left lateral elastic sheet is inclined downward, the left movable contact is arranged on the other end of the left lateral elastic sheet, and the left movable contact can be electrically connected with the left static contact; The structure of the right movable contact piece includes a right installation position, a right lateral elastic piece and a right movable contact, the right installation position is arranged on the right rear side of the trip frame, one end of the right installation position is electrically connected to the circuit board, and the right installation position is electrically connected to the circuit board. The other end is connected with one end of the right lateral elastic sheet and the right lateral elastic sheet is inclined downward. The right movable contact is arranged on the other end of the right lateral elastic sheet, and the right movable contact can be electrically connected with the right static contact.

In this technical solution, the left installation position includes a left longitudinal elastic sheet, a raised left limit elastic sheet is provided on both sides of the left longitudinal elastic sheet, one end of the left longitudinal elastic sheet is electrically connected to the circuit board, and the left longitudinal elastic sheet is electrically connected to the circuit board. The other end of the shrapnel is connected with one end of the left lateral shrapnel and the left lateral shrapnel is inclined downward; the right installation position includes a right longitudinal shrapnel, and there are raised right limit shrapnel on both sides of the right longitudinal shrapnel, so One end of the right longitudinal elastic sheet is electrically connected with the circuit board, and the other end of the right longitudinal elastic sheet is connected with one end of the right lateral elastic sheet and the right lateral elastic sheet is inclined downward; the left and right sides of the trip frame are respectively provided with longitudinal elastic sheets for positioning The left longitudinal elastic piece and the right longitudinal elastic piece are respectively inserted into the corresponding longitudinal elastic piece positioning groove, and the left limit elastic piece and the right limit elastic piece are respectively located in the corresponding longitudinal elastic piece positioning groove.

In this technical solution, the leakage protection plug is characterized in that a test switch and a silicone sleeve are further provided on the circuit board, and the top of the silicone sleeve protrudes from the outer shell and is sleeved on the top of the reset button and the test switch. .

Compared with the prior art, the present invention has the advantages that it can accurately display the mechanism action state of the leakage protection plug during reset operation and tripping and power off, and is more in line with EU standards.

Description of drawings

Fig. 1 is the perspective view of the present invention in the energized state

Fig. 2 is the exploded view of Fig. 1;

Fig. 3 is the top view of Fig. 1;

Fig. 4 is the A-A sectional view of Fig. 3;

Fig. 5 is the perspective view of the present invention with the shell removed;

FIG. 6 is a perspective view of FIG. 5 with the circuit board removed;

Figure 7 is a perspective view of the other side of Figure 6;

FIG. 8 is a perspective view of FIG. 6 with the trip frame removed;

9 is a schematic diagram of the structural cooperation of a pin pad, an indicator rod, a locking link and a pressing arm of the present invention;

Figure 9 is a perspective view of the other side of Figure 8;

Figure 10 is an exploded view of the trip frame and the pin pad of the present invention;

Figure 11 is a perspective view of the other side of Figure 7;

12 is a schematic diagram of the structure of the left static contact piece, the right static contact piece, the left moving contact piece and the structure of the right moving contact piece according to the present invention;

Fig. 13 is the top view of the present invention under the power-off state;

FIG. 14 is a cross-sectional view taken along line B-B of FIG. 13 .

Detailed ways

The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help the understanding of the present invention, but do not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

In the description of the present invention, the orientation or positional relationship indicated by the terms "front", "rear", "bottom", "upper", "left" and "right" are based on the orientation or positional relationship shown in the drawings, only It is for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a particular orientation, and therefore should not be construed as a limitation of the present invention.

In the present invention, unless otherwise expressly specified and limited, terms such as "provided" and "installed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integration; it may be a mechanical The connection may be direct connection or indirect connection through an intermediate medium, which may enable the internal communication of two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

As shown in Figures 1 to 14, it is a leakage protection plug, including a housing 1, a pin assembly 5, a pin pad 6, a trip frame 7, an indicator rod 8, a pressing arm 9, a lock link 10, and a lock Coil assembly 11, reset button 12, left moving contact piece structure 13, right moving contact piece structure 14, left static contact piece 15, right static contact piece 16 and circuit board 17; the pin assembly 5 includes a left pin 51, a right pin 52 and a prong frame 53, the prong frame 53 is set in the housing 1, the left pin 51 and the right prong 52 are respectively arranged on the prong frame 53 and pass through the outside of the housing 1; the tripping frame 7 is located in the housing 1, The circuit board 17 is arranged on the trip frame 7 , the pressing rod 121 of the reset button 12 can move up and down in the limit hole of the trip frame 7 through the circuit board 17 , the left static contact piece 15 and the right The static contact pieces 16 are respectively arranged on the circuit board 17, the left static contact pieces 15 are respectively electrically connected with the circuit board 17 and the left pins 51, the right static contact pieces 16 are respectively electrically connected with the circuit board 17 and the right pins 52, The left static contact piece 15 is provided with a left static contact 151, the right static contact piece 16 is provided with a right static contact 161; the trip frame 7 is provided with a first installation chamber 71 respectively and the second installation chamber 72, longitudinal sliding grooves 721 are respectively provided on the left and right sides of the second installation chamber 72, and the locking coil assembly 11 is arranged in the first installation chamber 71 and is electrically connected to the circuit board 17; The left moving contact piece structure 13 is arranged on the left rear side of the trip frame 7, the left moving contact piece 133 of the left moving contact piece structure 13 can be electrically connected with the left static contact 151, and the right moving contact piece structure 14 Located on the right rear side of the trip frame 7 , the right movable contact 143 of the right movable contact structure 14 is electrically connected to the right stationary contact 161 ; the lock link 10 is connected to the iron core of the trip coil assembly 11 111, the iron core 111 can drive the locking link 10 to move back and forth; the pressing arm 9 is located in the second installation chamber 72, and symmetrical bearing arms 91 are provided on the left and right sides of the bottom of the pressing arm 9, Corresponding linkage shafts 93 are provided on the left and right sides of the upper part of the pressing arm 9 . The linkage shafts 93 cooperate with the locking link 10 to rotate and slide up and down at the same time. The lock 92, the pressing rod 121 of the reset button 12 passes between the left and right push-pull rods 101 of the lock link 10, and the hook 122 of the pressing rod 121 can cooperate with the lock 92 of the pressing arm 9, so The bearing arms 91 are respectively located in the longitudinal sliding grooves 721 corresponding to the trip frame 7 and can move up and down. The left lateral elastic piece 132 of the left moving contact piece structure 13 is inclined downward and bears on the bearing arm 91 on the left side. The right lateral elastic piece 142 of the right movable contact piece structure 14 is inclined downward and bears on the bearing arm 91 on the right side. The front and rear movement of the locking link 10 can drive the pressing arm 9 to rotate forward and backward with the bearing arm 91 as the axis. ; The pin pad 6 includes a limit frame 61, a limit post 62 and a limit pad 63, the pin pad 6 is located above the pin assembly 5, and the limit frame 61 and the limit post 62 are provided in the limit Above the pad 63, the tripping frame 7 is set on the limit frame 61, and the limit The frame 61 is located below the bearing arm 91 , the limit post 62 extends into the trip frame 7 , the front side of the limit post 62 abuts the rear side of the reset button 12 , and the lock link 10 is supported on the trip frame 7 . It is characterized in that it also includes an indicator rod 8, the indicator rod 8 is located in the housing 1, and grooves are respectively provided on the left and right sides of the bottom of the second installation chamber 72 of the trip frame 7 74. Two supporting columns 64 are respectively provided on the pin pads 6, the supporting columns 64 are respectively located at the openings of the corresponding grooves 74 to form circular holes, and a light-transmitting cover is provided on the cover of the housing 1 4. There is also a through hole 94 between the two bearing arms 91 of the pressing arm 9, and a horizontal shaft 95 is also arranged in the through hole 94; the indicating rod 8 includes a fork-shaped rotating arm 81, a rotating shaft 82 , the vertical link 83 and the sign 84, the fork-shaped opening of the fork-shaped rotating arm 81 is inserted on the horizontal shaft 95 of the through hole 94, and the other end of the fork-shaped rotating arm 81 is connected to the vertical link 83. The bottom end is connected in an L-shape, the rotating shaft 82 is arranged at the intersection of the fork-shaped rotating arm 81 and the corner of the vertical connecting rod 83, and the left and right ends of the rotating shaft 82 are respectively pierced through the circular hole formed by the corresponding groove 74 and the supporting column 64. Inside, the vertical movement of the horizontal shaft 95 drives the fork-shaped rotating arm 81 to swing up and down along the rotating shaft 82, and at the same time, the vertical link 83 and the sign 84 are linked to swing back and forth; the top of the vertical link 83 passes through the second installation chamber. 72 and the circuit board 17, the indicator 84 is arranged on the top of the vertical link 83 and below the cover light-transmitting cover 4.

When the product is energized, the lock coil assembly 11 is energized to generate a magnetic field, and the iron core 111 induces a backward magnetic field pulling force. When the reset button 12 is pressed, when the hook 122 on the pressing rod 121 moves to the lower edge of the lock 92 of the pressing arm 9 At this time, the iron core 111 will pull the latch 92 of the pressing arm 9 through the latch link 10 to be inserted into the hook 122 of the reset button 12, and the iron core 111 will move backward until it reaches the bottom of the latch coil assembly 11 to communicate the magnetic field line circuit. , the magnetic field pulling force of the iron core 111 reaches the maximum, the pressing arm 9 and the reset button 12 are firmly locked into one, and then the pressing action is released, the reset button 12 moves upward under the action of the elastic force, and simultaneously drives the pressing arm 9 to bear The arm 91 undertakes that the left lateral elastic piece 132 and the right lateral elastic piece 132 move upward at the same time, until the left movable contact 133 and the left stationary contact 151 and the right movable contact 143 and the right stationary contact 161 touch the electrical connection at the same time, and start to work. The load is powered; the reset button 12 and the bearing arm 91 move upward, and at the same time, the fork-shaped rotating arm 81 is linked by the horizontal shaft 95 to rotate upward along the rotating shaft 82 and the vertical link 83 swings forward. The sign on the vertical link 83 It just aligns with the visual window of the translucent cover that stays on the face cover, and achieves the effect of the reset action indication.

When a leakage fault occurs or the test key is pressed, the working iron core 111 of the protection circuit loses its magnetic force, and the pressing arm 9 and the reset button 12 are immediately tripped under the reverse elastic force of the left and right shrapnel and the large spring, and move up and down respectively. , the left transverse elastic piece 132 and the right transverse elastic piece 142 drive the bearing arm 91 of the pressing arm 9 to slide down in the longitudinal chute 721 until it touches the limit frame 61 of the pin pad 6, the left movable contact 133 and the left static contact 151 and The right movable contact 143 and the right static contact 161 are separated at the same time and the distance is greater than or equal to 3mm, which completely cuts off the load power supply and plays a role in protecting personal safety; 81 rotates down along the rotating shaft 82 and the vertical link 83 swings backward. The indicator on the vertical link 83 leaves the visual window of the light-transmitting cover of the face cover, which has the effect of indicating the mechanism tripping.

In this embodiment, the locking link 10 further includes an upper longitudinal U-shaped opening 102 provided at the rear end of the two push-pull rods 101 and a lower longitudinal U-shaped chute 103 provided at the front end of the two push-pull rods 101 . The annular groove 115 of the iron core 111 is sleeved in the upper longitudinal U-shaped opening 102 so as to drive the locking link 10 to move forward and backward; Rotating and sliding up and down, the pressing rod 121 of the reset button 12 passes between the left and right push-pull rods 101 .

In this embodiment, a fork-shaped opening 85 is provided on one end of the fork-shaped rotating arm 81 , and one end of the fork-shaped opening 85 is inserted through the horizontal shaft 95 of the through hole 94 .

In this embodiment, more than two hooks 73 are provided at the bottom of the tripping frame 7 , and the tripping frame 7 is locked and integrated with the pin pad 6 through the hooks 73 .

In this embodiment, the limit frame 61 of the pin pad 6 is located below the bearing arm 91 , the limit post 62 extends into the trip frame 7 , and the front side of the limit post 62 abuts the reset button On the rear side of 12 , the locking link 10 is supported on the limiting column 62 .

In this embodiment, the left movable contact structure 13 further includes a left installation position 131 , the left installation position 131 is arranged on the left rear side of the trip frame 7 , and one end of the left installation position 131 is electrically connected to the circuit board 17 . , the other end of the left installation position 131 is connected to one end of the left lateral elastic piece 132 and the left lateral elastic piece 132 is inclined downward. The left movable contact 133 is provided at the other end of the left lateral elastic piece 132. It can be electrically connected to the left static contact 151; the right movable contact piece structure 14 includes a right installation position 141, a right lateral elastic piece 142 and a right movable contact 143, and the right installation position 141 is provided on the trip frame 7. On the right rear side, one end of the right mounting position 141 is electrically connected to the circuit board 17 , and the other end of the right mounting position 141 is connected to one end of the right lateral elastic piece 142 and the right lateral elastic sheet 142 is inclined downward. The right movable contact 143 is provided. At the other end of the right lateral elastic piece 142 , the right movable contact 143 can be electrically connected to the right stationary contact 141 .

In this embodiment, the left installation position 131 includes a left longitudinal elastic piece 1311, and a raised left limit elastic piece 1312 is provided on both sides of the left longitudinal elastic piece 1311. One end of the left longitudinal elastic piece 1311 is connected to the circuit board. 17 Electrically connected, the other end of the left longitudinal elastic piece 1311 is connected with one end of the left transverse elastic piece 132 and the left transverse elastic piece 132 is inclined downward; the right installation position 141 includes a right longitudinal elastic piece 1411, and the The side is provided with a raised right limit elastic piece 1412, one end of the right longitudinal elastic piece 1411 is electrically connected to the circuit board 17, and the other end of the right longitudinal elastic piece 1411 is connected to one end of the right transverse elastic piece 142 and makes the right transverse elastic piece 142 downward The left and right sides of the trip frame 7 are respectively provided with longitudinal elastic piece positioning grooves 75; the left longitudinal elastic piece 1311 and the right longitudinal elastic piece 1411 are respectively inserted into the corresponding longitudinal elastic piece positioning grooves 75. The position elastic piece 1312 and the right limit elastic piece 1312 are respectively located in the corresponding longitudinal elastic piece positioning grooves 75 .

In this embodiment, a test switch 2 and a silicone sleeve 3 are further provided on the circuit board 17 , and the top of the silicone sleeve 3 extends out of the casing 1 and is sleeved on the top of the reset button 12 and the test switch 2 .

The embodiments of the present invention are described above in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those of ordinary skill in the art, various changes, modifications, substitutions and deformations to these embodiments without departing from the principle and spirit of the present invention still fall within the protection scope of the present invention.

Claims

A leakage protection plug, comprising a casing (1), a pin assembly (5), a pin pad (6), a tripper mounting frame (7) for short, a pressing arm (9), and a locking link (10) , lock coil assembly (11), reset button (12), left moving contact piece structure (13), right moving contact piece structure (14), left static contact piece (15), right static contact piece (16) and circuit board (17); the pin assembly (5) includes a left pin (51), a right pin (52) and a pin holder (53) for short, and the pin holder (53) is arranged in the housing (1), The left pin (51) and the right pin (52) are respectively arranged on the pin frame (53) and extend out of the outer casing (1); the tripping frame (7) is located in the outer casing (1), and the circuit board ( 17) Set on the trip frame (7), the pressing rod (121) of the reset button (12) can move up and down in the limit hole of the trip frame (7) through the circuit board (17). The left static contact piece (15) and the right static contact piece (16) are respectively arranged on the circuit board (17), and the left static contact piece (15) is respectively electrically connected to the circuit board (17) and the left pin (51), The right static contact piece (16) is electrically connected to the circuit board (17) and the right pin (52) respectively, and a left static contact (151) is arranged on the left static contact piece (15), A right static contact (161) is arranged on the static contact piece (16); a first installation chamber (71) and a second installation chamber (72) are respectively arranged on the trip frame (7), and a first installation chamber (71) and a second installation chamber (72) are respectively arranged on the trip frame (7). The left and right sides of the second installation chamber (72) are respectively provided with longitudinal sliding grooves (721), the locking coil assembly (11) is arranged in the first installation chamber (71) and is electrically connected with the circuit board (17); The left moving contact piece structure (13) is arranged on the left rear side of the trip frame (7), and the left moving contact (133) of the left moving contact piece structure (13) can touch and electrically connect with the left static contact (151). , the right moving contact piece structure (14) is arranged on the right rear side of the trip frame (7), and the right moving contact (143) of the right moving contact piece structure (14) touches the right static contact (161) electrical connection; the lock link (10) is matched with the iron core (111) of the trip coil assembly (11), and the iron core (111) can drive the lock link (10) to move back and forth; the pressure The arm (9) is located in the second installation chamber (72), the left and right sides of the bottom of the pressing arm (9) are provided with relatively symmetrical bearing arms (91), and the left and right sides of the upper part of the pressing arm (9) are provided with Corresponding linkage shaft (93), the linkage shaft (93) and the lock link (10) can rotate and slide up and down at the same time, and a lock ( 92), the pressing rod (121) of the reset button (12) passes between the left and right push-pull rods (101) of the locking link (10), and the hook (122) of the pressing rod (121) can be In cooperation with the lock (92) of the pressing arm (9), the bearing arm (91) is respectively located in the longitudinal chute (721) corresponding to the tripping frame (7) and can move up and down, and the left moving contact piece Left lateral shrapnel of structure (13) ( 132) The right lateral elastic piece (142) of the right movable contact piece structure (14) is inclined downward and bears on the bearing arm (91) on the right side. , the front and rear movement of the locking link (10) can drive the pressing arm (9) to rotate back and forth with the bearing arm (91) as the axis; the pin pad (6) includes a limit frame (61), a limit column ( 62) and a limit pad (63), the pin pad (6) is arranged above the pin assembly (5), and the limit frame (61) and the limit post (62) are arranged on the limit pad (63) Above, the trip frame (7) is arranged on the limit frame (61), the limit frame (61) is located below the bearing arm (91), and the limit post (62) extends into the trip In the frame (7), the front side of the limit post (62) abuts against the rear side of the reset button (12), and the locking link (10) is supported on the limit post (62); it is characterized in that Also includes an indicator rod (8), the indicator rod (8) is located in the housing (1), and recesses are respectively provided on the left and right sides of the bottom of the second installation chamber (72) of the trip frame (7) A groove (74), two support columns (64) are respectively provided on the pin pad (6), the support columns (64) are respectively located at the openings of the corresponding grooves (74) to form circular holes, The face cover of the body (1) is provided with a light-transmitting cover (4), and a through hole (94) is also provided between the two bearing arms (91) of the pressing arm (9). ) is also provided with a horizontal shaft (95); the indicating rod (8) includes a fork-shaped rotating arm (81), a rotating shaft (82), a vertical connecting rod (83) and an indicating sign (84). The fork-shaped opening of the rotating arm (81) is inserted through the horizontal shaft (95) of the through hole (94), and the other end of the fork-shaped rotating arm (81) and the bottom end of the vertical link (83) are L-shaped connection, the rotating shaft (82) is arranged at the intersection of the fork-shaped rotating arm (81) and the corner of the vertical connecting rod (83), and the left and right ends of the rotating shaft (82) respectively pass through the corresponding groove (74) and the supporting column In the circular hole formed by (64), the horizontal shaft (95) moves up and down to drive the fork-shaped rotating arm (81) to swing up and down along the rotating shaft (82), and at the same time link the vertical link (83) and the sign (84) back and forth Swing; the top of the vertical link (83) passes through the second installation chamber (72) and the circuit board (17), and the sign (84) is arranged on the top of the vertical link (83) and is located on the surface Cover the bottom of the translucent cover (4).
The leakage protection plug according to claim 1, characterized in that the locking link (10) further comprises an upper longitudinal U-shaped opening (102) provided at the rear end of the two push-pull rods (101) and an upper longitudinal U-shaped opening (102) provided at the two push-pull rods (101). The lower longitudinal U-shaped chute (103) at the front end of the tie rod (101), the annular groove (115) of the iron core (111) is sleeved in the upper longitudinal U-shaped opening (102) to drive the locking link (10). ) moves back and forth; the linkage shaft (93) can simultaneously rotate and slide up and down in the lower longitudinal U-shaped chute (103) of the locking link (10), and the pressing rod (121) of the reset button (12) Pass through between the left and right push-pull rods (101).
The leakage protection plug according to claim 1, characterized in that a fork-shaped opening (85) is provided on one end of the fork-shaped rotating arm (81), and one end of the fork-shaped opening (85) is inserted through the through hole (94) on the transverse axis (95).
The leakage protection plug according to claim 1, characterized in that more than two hooks (73) are provided at the bottom of the trip frame (7), and the trip frame (7) is connected to the trip frame (73) through the hooks (73). The pin pads (6) are integrally locked.
The leakage protection plug according to claim 1, characterized in that the limit frame (61) of the pin pad (6) is located below the bearing arm (91), and the limit post (62) extends into the tripping In the frame (7), the front side of the limit post (62) abuts against the rear side of the reset button (12), and the locking link (10) is supported on the limit post (62).
The leakage protection plug according to claim 1, characterized in that the left moving contact piece structure (13) further comprises a left installation position (131), and the left installation position (131) is provided on the side of the trip frame (7). On the left rear side, one end of the left mounting position (131) is electrically connected to the circuit board (17), and the other end of the left mounting position (131) is connected to one end of the left lateral elastic piece (132) and the left lateral elastic sheet (132) is downward Inclined, the left movable contact (133) is arranged on the other end of the left lateral elastic piece (132), and the left movable contact (133) can be electrically connected with the left static contact (151); The contact piece structure (14) comprises a right installation position (141), a right lateral elastic sheet (142) and a right movable contact (143), and the right installation position (141) is arranged on the right rear side of the trip frame (7), One end of the right mounting position (141) is electrically connected to the circuit board (17), and the other end of the right mounting position (141) is connected to one end of the right lateral elastic piece (142) and the right lateral elastic sheet (142) is inclined downward, the said The right movable contact (143) is arranged on the other end of the right lateral elastic piece (142), and the right movable contact (143) can be electrically connected to the right stationary contact (141).
The leakage protection plug according to claim 5, characterized in that the left installation position (131) comprises a left longitudinal elastic piece (1311), and a raised left limiter is provided on both sides of the left longitudinal elastic piece (1311). An elastic piece (1312), one end of the left longitudinal elastic piece (1311) is electrically connected with the circuit board (17), and the other end of the left longitudinal elastic piece (1311) is connected with one end of the left transverse elastic piece (132) and makes the left transverse elastic piece (132) ) is inclined downward; the right installation position (141) includes a right longitudinal elastic sheet (1411), and a raised right limit elastic sheet (1412) is provided on both sides of the right longitudinal elastic sheet (1411). One end of the elastic piece (1411) is electrically connected with the circuit board (17), and the other end of the right longitudinal elastic piece (1411) is connected with one end of the right transverse elastic piece (142) and the right transverse elastic piece (142) is inclined downward; The left and right sides of the buckle frame (7) are respectively provided with longitudinal elastic piece positioning grooves (75); the left longitudinal elastic piece (1311) and the right longitudinal elastic piece (1411) are respectively inserted into the corresponding longitudinal elastic piece positioning grooves (75), The left limit elastic piece (1312) and the right limit elastic piece (1312) are respectively located in the corresponding longitudinal elastic piece positioning grooves (75).
The leakage protection plug according to claim 1, characterized in that a test switch (2) and a silicone sleeve (3) are further provided on the circuit board (17), and the top of the silicone sleeve (3) protrudes from the outer casing ( 1) and set it on the top of the reset button (12) and the test switch (2).