CN213782410U - Leakage protection plug - Google Patents

Abstract

The utility model relates to a leakage protection plug, which comprises a shell, a pin component, a pin pad, a tripping frame, a pressing arm, a locking connecting rod, a locking coil component, a reset button, a left movable contact structure, a right movable contact structure, a left static contact, a right static contact and a circuit board; is characterized by also comprising an indicating rod, wherein the supporting column is positioned at the opening corresponding to the groove to form a round hole, a surface cover light-transmitting cover is arranged on the surface cover of the shell, a through hole is also arranged between the two bearing arms, and a cross shaft is also arranged in the through hole; the indicating rod comprises a fork-shaped rotating arm, a rotating shaft, a vertical connecting rod and an indicating plate, a fork-shaped opening of the fork-shaped rotating arm is inserted on a cross shaft of the through hole, 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 arranged at the corner of the fork-shaped rotating arm and the vertical connecting rod, and the left end and the right end of the rotating shaft are inserted in a round hole formed by the groove and the supporting column. The leakage protection plug has the advantages that the leakage protection plug can accurately display the mechanism action state of the leakage protection plug during reset operation and tripping power failure, and better meets the European Union standard.

Description

Leakage protection plug

Technical Field

The utility model relates to a leakage protection plug.

Background

The existing leakage protection plug is shown in patent application No. 202010977573.5, the product has the advantages of simple structure, easy assembly, stable and reliable work, and can meet the requirements of open-phase protection and international universal standard that the distance between a movable contact and a stationary contact is more than or equal to 3 mm; however, when the leakage protection plug is used, the mechanism operation state of the leakage protection plug at the time of reset operation and tripping power failure cannot be displayed, and therefore, the standards of the european union are not completely satisfied.

Disclosure of Invention

The utility model aims at overcoming the not enough and providing an earth leakage protection plug of prior art, the earth leakage protection plug of the mechanism action state when can accurate demonstration work of resetting and dropout outage.

In order to achieve the above object, the present invention is a leakage protection plug, which comprises a housing, a pin assembly, a pin pad, a trip frame, a press arm, a latch connecting rod, a latch coil assembly, a reset button, a left movable contact spring structure, a right movable contact spring structure, a left static contact spring, a right static contact spring and a circuit board; the pin assembly comprises a left pin, a right pin and a pin inserting frame, the pins are erected in the shell, and the left pin and the right pin are respectively arranged on the pin piece and penetrate out of the shell; the tripping frame is positioned in the shell, the circuit board is arranged on the tripping frame, a pressure rod of the reset button penetrates through the circuit board and can move up and down in a limiting hole of the tripping frame, the left static contact piece and the right static contact piece are respectively arranged on the circuit board, the left static contact piece is respectively electrically connected with the circuit board and the left pin, the right static contact piece is respectively electrically connected with the circuit board and the right pin, a left static contact is arranged on the left static contact piece, and a right static contact is arranged on the right static contact piece; the trip frame is respectively provided with a first installation chamber and a second installation chamber, the left side and the right side of the second installation chamber are respectively provided with a longitudinal sliding chute, and the latch coil assembly is arranged in the first installation chamber and is electrically connected with the circuit board; the left movable contact spring structure is arranged on the left rear side of the trip frame, a left movable contact of the left movable contact spring structure can be in touch electrical connection with the left fixed contact, the right movable contact spring structure is arranged on the right rear side of the trip frame, and a right movable contact of the right movable contact spring structure is in touch electrical connection with the right fixed contact; the lock catch connecting rod is matched with the iron core of the lock catch coil assembly, and the iron core can drive the lock catch connecting rod to move back and forth; the pressure arm is positioned in the second mounting chamber, symmetrical bearing arms are arranged on the left side and the right side of the bottom of the pressure arm, corresponding linkage shafts are arranged on the left side and the right side of the upper portion of the pressure arm, the linkage shafts are matched with the lock catch connecting rod and can rotate and slide up and down simultaneously, a lock catch is arranged on the rear side of the upper portion of the pressure arm, a pressure rod of the reset button penetrates through a left push-pull rod and a right push-pull rod of the lock catch connecting rod, a clamping hook of the pressure rod can be matched with the lock catch of the pressure arm, the bearing arms are respectively positioned in longitudinal sliding grooves corresponding to the tripping frame and can move up and down, a left transverse elastic sheet of the left movable contact structure inclines downwards and bears on the bearing arm on the left side, a right transverse elastic sheet of the right movable contact structure inclines downwards and bears on the bearing arm on the right bearing arm, and the lock catch connecting rod can drive the pressure arm to rotate back and forth by taking the bearing arm as an axis; the pin cushion comprises a limiting frame, a limiting column and a limiting cushion, the pin cushion is arranged above the pin assembly, the limiting frame and the limiting column are arranged above the limiting cushion, the tripping frame is arranged on the limiting frame, the limiting frame is positioned below the bearing arm, the limiting column extends into the tripping frame, the front side surface of the limiting column abuts against the rear side of the reset button, and the locking connecting rod is supported on the limiting column; the pressure arm is characterized by further comprising an indicating rod, wherein the indicating rod is positioned in the shell, grooves are formed in the left side and the right side of the bottom of the second mounting chamber of the tripping frame respectively, two supporting columns are arranged on the pin pad respectively, the supporting columns are positioned in circular holes corresponding to openings of the grooves respectively, a light-transmitting cover is arranged on a surface cover of the shell, a through hole is formed between the two bearing arms of the pressure arm, and a transverse shaft is arranged in the through hole; the indicating rod comprises a fork-shaped rotating arm, a rotating shaft, a vertical connecting rod and an indicating board, a fork-shaped opening of the fork-shaped rotating arm is inserted on a cross shaft of the through hole, 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 arranged at the corner intersection of the fork-shaped rotating arm and the vertical connecting rod, the left end and the right end of the rotating shaft are respectively inserted in a round hole formed by corresponding grooves and supporting columns, the cross shaft moves up and down to drive the fork-shaped rotating arm to swing up and down along the rotating shaft, and the vertical connecting rod and the indicating board are linked to swing back and forth; the top of the vertical connecting rod penetrates through the second mounting chamber and the circuit board, and the indicator is arranged at the top of the vertical connecting rod and is positioned below the surface cover light-transmitting cover.

In the technical scheme, the lock catch connecting rod further comprises upper longitudinal U-shaped openings arranged at the rear ends of the two push-pull rods and lower longitudinal U-shaped sliding chutes arranged at the front ends of the two push-pull rods, and the annular groove of the iron core is sleeved in the upper longitudinal U-shaped openings so as to drive the lock catch connecting rod to move back and forth; the linkage shaft can simultaneously rotate and vertically slide in the lower longitudinal U-shaped sliding groove of the lock catch connecting rod, and the pressure rod of the reset button penetrates through the left push-pull rod and the right push-pull rod.

In the technical scheme, a fork-shaped opening is formed in one end of the fork-shaped rotating arm, one end of the fork-shaped opening is inserted on a cross shaft of the through hole, 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 arranged at the intersection of the corners of the fork-shaped rotating arm and the vertical connecting rod, and the indicator is arranged at the top of the vertical connecting rod.

In the technical scheme, more than two hooks are arranged at the bottom of the tripping frame, and the tripping frame and the pin pad are locked into a whole through the hooks.

In this technical scheme insert the spacing frame of callus on the sole and be located the below of undertaking the arm, spacing post stretches into the trip frame in, the leading flank of spacing post supports and leans on in the rear side of reset button, the hasp connecting rod bearing is on spacing post.

In the technical scheme, the left movable contact spring structure further comprises a left mounting position, the left mounting position is arranged on the left rear side of the tripping frame, one end of the left mounting position is electrically connected with the circuit board, the other end of the left mounting position is connected with one end of a left transverse elastic sheet and enables the left transverse elastic sheet to incline downwards, the left movable contact is arranged at the other end of the left transverse elastic sheet, and the left movable contact can be electrically connected with the left fixed contact in a touching manner; the right movable contact spring structure comprises a right mounting position, a right transverse elastic sheet and a right movable contact, the right mounting position is arranged on the right rear side of the tripping frame, one end of the right mounting position is electrically connected with the circuit board, the other end of the right mounting position is connected with one end of the right transverse elastic sheet and enables the right transverse elastic sheet to incline downwards, the right movable contact is arranged at the other end of the right transverse elastic sheet, and the right movable contact can be electrically connected with the right stationary contact in a touching manner.

In the technical scheme, the left mounting position comprises a left longitudinal elastic sheet, two sides of the left longitudinal elastic sheet are provided with raised left limiting elastic sheets, one end of the left longitudinal elastic sheet is electrically connected with the circuit board, and the other end of the left longitudinal elastic sheet is connected with one end of a left transverse elastic sheet and enables the left transverse elastic sheet to incline downwards; the right mounting position comprises a right longitudinal elastic sheet, two sides of the right longitudinal elastic sheet are provided with raised right limiting elastic sheets, 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 transverse elastic sheet and enables the right transverse elastic sheet to incline downwards; longitudinal elastic sheet positioning grooves are respectively formed in the left side and the right side of the tripping frame; the left longitudinal elastic sheet and the right longitudinal elastic sheet are respectively inserted in the corresponding longitudinal elastic sheet positioning grooves, and the left limiting elastic sheet and the right limiting elastic sheet are respectively positioned in the corresponding longitudinal elastic sheet positioning grooves.

In the technical scheme, the leakage protection plug is characterized in that the circuit board is further provided with a test switch and a silica gel sleeve, and the top of the silica gel sleeve extends out of the shell and is sleeved on the top of the reset button and the test switch.

Compared with the prior art, the utility model the advantage do: the leakage protection plug can accurately display the mechanism action state of the leakage protection plug during reset operation and tripping power failure, and better meets the European Union standard.

Drawings

FIG. 1 is a perspective view of the present invention in the power-on state

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a perspective view of the present invention with the outer shell removed;

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

FIG. 7 is a perspective view of the other side of FIG. 6;

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

fig. 9 is a schematic view of the structure of the foot-inserting pad, the indicating rod, the locking connecting rod and the pressing arm according to the present invention (fig. 9 is a perspective view of the other side of fig. 8);

FIG. 10 is an exploded view of the trip frame and foot insertion pad of the present invention;

FIG. 11 is a perspective view of the other side of FIG. 7;

FIG. 12 is a schematic view of the structural cooperation of the left static contact, the right static contact, the left movable contact and the right movable contact of the present invention;

fig. 13 is a plan view of the present invention in a power-off state;

fig. 14 is a sectional view B-B of fig. 13.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, the terms "front", "rear", "lower", "upper", "left" and "right" indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only for convenience of description of the present invention rather than for requirement that the present invention must be constructed and operated in a specific position, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "provided with" and "mounted" are to be understood in a broad sense, e.g. as a fixed connection, a detachable connection, or an integral part; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening media, such that there is communication between the two elements or there is an interaction between the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 to 14, it is an earth leakage protection plug, which includes a housing 1, a pin assembly 5, a pin pad 6, a trip frame 7, an indication rod 8, a pressing arm 9, a latch link 10, a latch coil assembly 11, a reset button 12, a left movable contact structure 13, a right movable contact structure 14, a left stationary contact 15, a right stationary contact 16 and a circuit board 17; the pin assembly 5 comprises a left pin 51, a right pin 52 and a pin frame 53, the pin frame 53 is arranged in the shell 1, and the left pin 51 and the right pin 52 are respectively arranged on the pin frame 53 and penetrate out of the shell 1; the trip frame 7 is positioned in the shell 1, the circuit board 17 is arranged on the trip frame 7, the pressure lever 121 of the reset button 12 penetrates through the circuit board 17 and can move up and down in a limiting hole of the trip frame 7, the left static contact piece 15 and the right static contact piece 16 are respectively arranged on the circuit board 17, the left static contact piece 15 is respectively electrically connected with the circuit board 17 and the left pin 51, the right static contact piece 16 is respectively electrically connected with the circuit board 17 and the right pin 52, the left static contact piece 15 is provided with a left static contact 151, and the right static contact piece 16 is provided with a right static contact 161; a first mounting chamber 71 and a second mounting chamber 72 are respectively arranged on the trip frame 7, longitudinal sliding grooves 721 are respectively arranged on the left side and the right side of the second mounting chamber 72, and the locking coil assembly 11 is arranged in the first mounting chamber 71 and is electrically connected with the circuit board 17; the left movable contact spring structure 13 is arranged at the left rear side of the trip frame 7, the left movable contact 133 of the left movable contact spring structure 13 can be in touch and electric connection with the left fixed contact 151, the right movable contact spring structure 14 is arranged at the right rear side of the trip frame 7, and the right movable contact 143 of the right movable contact spring structure 14 is in touch and electric connection with the right fixed contact 161; the locking connecting rod 10 is matched with an iron core 111 of the locking coil component 11, and the iron core 111 can drive the locking connecting rod 10 to move back and forth; the press arm 9 is positioned in the second mounting chamber 72, symmetrical bearing arms 91 are arranged at the left side and the right side of the bottom of the press arm 9, the left side and the right side of the upper part of the pressure arm 9 are provided with corresponding linkage shafts 93, the linkage shafts 93 are matched with the lock catch connecting rod 10 and can rotate and slide up and down simultaneously, a lock catch 92 is arranged at the rear side of the upper part of the pressure arm 9, a pressure rod 121 of the reset button 12 passes through the left and right push-pull rods 101 of the lock catch connecting rod 10, the hook 122 of the pressure lever 121 can be matched with the lock 92 of the pressure arm 9, the bearing arms 91 are respectively positioned in the longitudinal sliding slots 721 corresponding to the tripping frame 7 and can move up and down, the left lateral spring 132 of the left movable contact structure 13 is inclined downward and bears on the bearing arm 91 on the left side, the right transverse spring 142 of the right movable contact structure 14 is inclined downwardly and bears on the right bearing arm 91, the lock catch connecting rod 10 moves back and forth to drive the pressure arm 9 to rotate back and forth by taking the bearing arm 91 as an axis; the pin inserting pad 6 comprises a limiting frame 61, a limiting column 62 and a limiting pad 63, the pin inserting pad 6 is arranged above the pin inserting assembly 5, the limiting frame 61 and the limiting column 62 are arranged above the limiting pad 63, the tripping frame 7 is arranged on the limiting frame 61, the limiting frame 61 is positioned below the bearing arm 91, the limiting column 62 extends into the tripping frame 7, the front side surface of the limiting column 62 abuts against the rear side of the reset button 12, and the lock catch connecting rod 10 is supported on the limiting column 62; the multifunctional tripping device is characterized by further comprising an indicating rod 8, wherein the indicating rod 8 is positioned in the shell 1, grooves 74 are respectively formed in the left side and the right side of the bottom of the second mounting chamber 72 of the tripping frame 7, two supporting columns 64 are respectively arranged on the foot inserting pads 6, circular holes are formed in the positions, corresponding to the openings of the grooves 74, of the supporting columns 64, a light-transmitting cover 4 is arranged on a face cover of the shell 1, a through hole 94 is further formed between two bearing arms 91 of the pressing arm 9, and a transverse shaft 95 is further arranged in the through hole 94; the indicating rod 8 comprises a fork-shaped rotating arm 81, a rotating shaft 82, a vertical connecting rod 83 and an indicating plate 84, a fork-shaped opening of the fork-shaped rotating arm 81 is inserted on a transverse shaft 95 of the through hole 94, the other end of the fork-shaped rotating arm 81 is connected with the bottom end of the vertical connecting rod 83 in an L shape, the rotating shaft 82 is arranged at the intersection of corners of the fork-shaped rotating arm 81 and the vertical connecting rod 83, the left end and the right end of the rotating shaft 82 are respectively inserted in a round hole formed by the corresponding groove 74 and the supporting column 64, the transverse 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 the vertical connecting rod 83 and the indicating plate 84 are linked to swing back and forth; the top of the vertical link 83 passes through the second mounting chamber 72 and the circuit board 17, and the indicator 84 is arranged at the top of the vertical link 83 and below the front cover light-transmitting cover 4.

When the product is powered on, the locking coil assembly 11 is powered on to generate a magnetic field, the iron core 111 induces backward magnetic field pulling force, the reset button 12 is pressed, when the hook 122 of the pressing rod 121 moves to the lower edge of the latch 92 of the pressing arm 9, the plunger 111 will pull the latch 92 of the pressing arm 9 to be latched into the hook 122 of the reset button 12 through the latch link 10, the iron core 111 moves backwards until the iron core is pushed against the bottom of the locking coil component 11 to communicate with a magnetic line of force loop, the magnetic field tension of the iron core 111 reaches the maximum, the pressing arm 9 and the reset button 12 are firmly locked into a whole, then, the pressing action is released, the reset button 12 moves upwards under the action of the elastic force, and simultaneously drives the bearing arm 91 of the pressing arm 9 to bear the left transverse elastic sheet 132 and the right transverse elastic sheet 132 to move upwards simultaneously until the left movable contact 133 and the left fixed contact 151 as well as the right movable contact 143 and the right fixed contact 161 are simultaneously touched and electrically connected, and the work is started to supply power to the load; the reset button 12 and the bearing arm 91 move upwards, and simultaneously the cross shaft 95 is linked with the fork-shaped rotating arm 81 to rotate upwards along the rotating shaft 82 and swing forwards through the vertical connecting rod 83, and the indicator on the vertical connecting rod 83 just aims at the transparent cover visual window staying on the surface cover, so that the effect of resetting action indication is achieved.

When a leakage fault occurs or a test key is pressed down, the working iron core 111 of the protection circuit loses magnetic force, the pressure arm 9 and the reset button 12 are immediately released under the reverse elastic force action of the left spring plate, the right spring plate and the large spring and respectively move upwards and downwards, the left transverse spring plate 132 and the right transverse spring plate 142 drive the bearing arm 91 of the pressure arm 9 to slide downwards in the longitudinal sliding groove 721 until the bearing arm abuts against the limiting frame 61 of the pin pad 6, the left movable contact 133 and the left stationary contact 151 as well as the right movable contact 143 and the right stationary contact 161 are simultaneously separated by a distance of more than or equal to 3mm, and a load power supply is completely cut off, so that the function of protecting personal safety is achieved; the bearing arm 91 moves downwards, the cross shaft 95 is linked with the fork-shaped rotating arm 81 to rotate downwards along the rotating shaft 82 and swing backwards through the vertical connecting rod 83, and the indicator on the vertical connecting rod 83 leaves the transparent cover visual window of the face cover, so that the effect of indicating the tripping of the mechanism is achieved.

In this embodiment, the locking link 10 further includes an upper longitudinal U-shaped opening 102 disposed at the rear end of the two push-pull rods 101 and a lower longitudinal U-shaped sliding slot 103 disposed at the front end of the two push-pull rods 101, and 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 to move back and forth; the linkage shaft 93 can rotate and slide up and down in the lower longitudinal U-shaped sliding groove 103 of the lock catch connecting rod 10 at the same time, and the pressing rod 121 of the reset button 12 penetrates through the left push-pull rod 101 and the right push-pull rod 101.

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

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

In this embodiment, the limiting frame 61 of the foot inserting pad 6 is located below the bearing arm 91, the limiting column 62 extends into the trip frame 7, the front side surface of the limiting column 62 abuts against the rear side of the reset button 12, and the locking connecting rod 10 is supported on the limiting column 62.

In this embodiment, the left movable contact structure 13 further includes a left mounting position 131, the left mounting position 131 is disposed at the left rear side of the trip frame 7, one end of the left mounting position 131 is electrically connected to the circuit board 17, the other end of the left mounting position 131 is connected to one end of the left transverse spring 132 and tilts the left transverse spring 132 downward, the left movable contact 133 is disposed at the other end of the left transverse spring 132, and the left movable contact 133 can be electrically connected to the left stationary contact 151 in a touching manner; the right movable contact spring structure 14 includes a right mounting position 141, a right transverse spring 142 and a right movable contact 143, the right mounting position 141 is disposed at 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, the other end of the right mounting position 141 is connected to one end of the right transverse spring 142 and tilts the right transverse spring 142 downward, the right movable contact 143 is disposed at the other end of the right transverse spring 142, and the right movable contact 143 can be electrically connected to the right stationary contact 161 in a touching manner.

In this embodiment, the left mounting position 131 includes a left longitudinal elastic piece 1311, two sides of the left longitudinal elastic piece 1311 are provided with a raised left limiting elastic piece 1312, one end of the left longitudinal elastic piece 1311 is electrically connected to the circuit board 17, and the other end of the left longitudinal elastic piece 1311 is connected to one end of the left transverse elastic piece 132 and makes the left transverse elastic piece 132 tilt downwards; the right mounting position 141 comprises a right longitudinal elastic sheet 1411, two sides of the right longitudinal elastic sheet 1411 are provided with raised right limiting elastic sheets 1412, one end of the right longitudinal elastic sheet 1411 is electrically connected with the circuit board 17, and the other end of the right longitudinal elastic sheet 1411 is connected with one end of the right transverse elastic sheet 142 and enables the right transverse elastic sheet 142 to incline downwards; longitudinal spring positioning grooves 75 are respectively arranged at the left side and the right side of the trip frame 7; the left longitudinal spring 1311 and the right longitudinal spring 1411 are respectively inserted into the corresponding longitudinal spring positioning grooves 75, and the left limit spring 1312 and the right limit spring 1412 are respectively located in the corresponding longitudinal spring positioning grooves 75.

In this embodiment, the circuit board 17 is further provided with a test switch 2 and a silica gel sleeve 3, and the top of the silica gel sleeve 3 extends out of the housing 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 in detail with reference to the drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention.

Claims (8)

1. A leakage protection plug comprises a shell (1), a pin assembly (5), a pin pad (6), a release mounting frame, a release frame (7) for short, a pressure arm (9), a lock catch connecting rod (10), a lock catch coil assembly (11), a reset button (12), a left movable contact piece structure (13), a right movable contact piece structure (14), a left static contact piece (15), a right static contact piece (16) and a circuit board (17); the pin assembly (5) comprises a left pin (51), a right pin (52) and a pin fixing frame, namely a pin inserting frame (53), wherein the pin inserting frame (53) is arranged in the shell (1), and the left pin (51) and the right pin (52) are respectively arranged on the pin inserting frame (53) and penetrate out of the shell (1); the trip frame (7) is positioned in the shell (1), the circuit board (17) is arranged on the trip frame (7), a pressure rod (121) of the reset button (12) penetrates through the circuit board (17) and can move up and down in a limiting hole of the trip frame (7), the left static contact piece (15) and the right static contact piece (16) are respectively arranged on the circuit board (17), the left static contact piece (15) is respectively and electrically connected with the circuit board (17) and the left pin (51), the right static contact piece (16) is respectively and electrically connected with the circuit board (17) and the right pin (52), the left static contact piece (15) is provided with a left static contact (151), and the right static contact piece (16) is provided with a right static contact (161); a first mounting chamber (71) and a second mounting chamber (72) are respectively arranged on the tripping frame (7), longitudinal sliding grooves (721) are respectively arranged on the left side and the right side of the second mounting chamber (72), and the latching coil assembly (11) is arranged in the first mounting chamber (71) and is electrically connected with the circuit board (17); the left movable contact spring structure (13) is arranged on the left rear side of the trip frame (7), a left movable contact (133) of the left movable contact spring structure (13) can be in touch electrical connection with the left fixed contact (151), the right movable contact spring structure (14) is arranged on the right rear side of the trip frame (7), and a right movable contact (143) of the right movable contact spring structure (14) is in touch electrical connection with the right fixed contact (161); the lock catch connecting rod (10) is matched with an iron core (111) of the lock catch coil assembly (11), and the iron core (111) can drive the lock catch connecting rod (10) to move back and forth; the pressure arm (9) is positioned in the second mounting chamber (72), symmetrical bearing arms (91) are arranged on the left side and the right side of the bottom of the pressure arm (9), corresponding linkage shafts (93) are arranged on the left side and the right side of the upper part of the pressure arm (9), the linkage shafts (93) are matched with the lock catch connecting rods (10) and can simultaneously rotate and slide up and down, a lock catch (92) is arranged on the rear side of the upper part of the pressure arm (9), a pressure rod (121) of the reset button (12) penetrates through a left push-pull rod (101) and a right push-pull rod (721) of the lock catch connecting rods (10), a clamping hook (122) of the pressure rod (121) can be matched with the lock catch (92) of the pressure arm (9), the bearing arms (91) are respectively positioned in longitudinal sliding grooves (721) corresponding to the trip frame (7) and can move up and down, a left transverse elastic sheet (132) of the left movable contact spring structure (13) inclines downwards and bears on the bearing arms (91) on the left side, the right transverse elastic sheet (142) of the right movable contact spring structure (14) inclines downwards and is born on the bearing arm (91) on the right side, and the lock catch connecting rod (10) moves back and forth to drive the pressure arm (9) to rotate back and forth by taking the bearing arm (91) as an axis; the pin inserting pad (6) comprises a limiting frame (61), a limiting column (62) and a limiting pad (63), the pin inserting pad (6) is arranged above the pin inserting assembly (5), the limiting frame (61) and the limiting column (62) are arranged above the limiting pad (63), the tripping frame (7) is arranged on the limiting frame (61), the limiting frame (61) is positioned below the bearing arm (91), the limiting column (62) extends into the tripping frame (7), the front side surface of the limiting column (62) abuts against the rear side of the reset button (12), and the lock catch connecting rod (10) is supported on the limiting column (62); the novel multifunctional tripping device is characterized by further comprising an indicating rod (8), wherein the indicating rod (8) is positioned in the shell (1), grooves (74) are respectively formed in the left side and the right side of the bottom of a second mounting chamber (72) of the tripping frame (7), two supporting columns (64) are respectively arranged on the foot inserting pad (6), the supporting columns (64) are respectively positioned at openings corresponding to the grooves (74) to form round holes, a light-transmitting cover (4) is arranged on a surface cover of the shell (1), a through hole (94) is further formed between two bearing arms (91) of the pressing arm (9), and a transverse shaft (95) is further arranged in the through hole (94); the indicating rod (8) comprises a fork-shaped rotating arm (81), a rotating shaft (82), a vertical connecting rod (83) and an indicating plate (84), a fork-shaped opening of the fork-shaped rotating arm (81) is inserted on a transverse shaft (95) of the through hole (94), the other end of the fork-shaped rotating arm (81) is connected with the bottom end of the vertical connecting rod (83) in an L shape, the rotating shaft (82) is arranged at a corner intersection of the fork-shaped rotating arm (81) and the vertical connecting rod (83), the left end and the right end of the rotating shaft (82) are respectively inserted in a circular hole formed by the corresponding groove (74) and the supporting column (64), the transverse 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 the vertical connecting rod (83) and the indicating plate (84) are linked to swing back and forth; the top of vertical connecting rod (83) passes second installation room (72) and circuit board (17), sign (84) are established at the top of vertical connecting rod (83) and are located the below of face lid printing opacity cover (4).

2. The earth leakage protection plug according to claim 1, wherein the locking connecting rod (10) further comprises an upper longitudinal U-shaped opening (102) disposed at the rear end of the two push-pull rods (101) and a lower longitudinal U-shaped sliding slot (103) disposed at the front end of the two push-pull rods (101), and the annular groove (115) of the iron core (111) is sleeved in the upper longitudinal U-shaped opening (102) to drive the locking connecting rod (10) to move back and forth; the linkage shaft (93) can simultaneously rotate and vertically slide in a lower longitudinal U-shaped sliding groove (103) of the lock catch connecting rod (10), and a pressure rod (121) of the reset button (12) penetrates through the left push-pull rod and the right push-pull rod (101).

3. A residual current protection plug as claimed in claim 1, characterized in that a fork-shaped opening (85) is provided at one end of the fork-shaped pivoting arm (81), and one end of the fork-shaped opening (85) is inserted through a transverse shaft (95) of the through hole (94).

4. A residual current protection plug as claimed in claim 1, characterized in that the bottom of the trip frame (7) is provided with more than two hooks (73), and the trip frame (7) is locked with the pin pad (6) through the hooks (73).

5. The earth leakage protection plug according to claim 1, wherein the limiting frame (61) of the plug foot pad (6) is located below the bearing arm (91), the limiting post (62) extends into the release bracket (7), the front side of the limiting post (62) abuts against the rear side of the reset button (12), and the locking connecting rod (10) is supported on the limiting post (62).

6. A residual current protection plug according to claim 1, wherein said left movable contact structure (13) further comprises a left mounting position (131), said left mounting position (131) is disposed at the left rear side of the trip frame (7), one end of the left mounting position (131) is electrically connected to the circuit board (17), the other end of the left mounting position (131) is connected to one end of the left transverse spring (132) and makes the left transverse spring (132) tilt downward, said left movable contact (133) is disposed at the other end of the left transverse spring (132), said left movable contact (133) can be electrically connected to the left stationary contact (151) in a touching manner; the right movable contact piece structure (14) comprises a right mounting position (141), a right transverse elastic piece (142) and a right movable contact (143), the right mounting position (141) is arranged on the right rear side of the tripping frame (7), one end of the right mounting position (141) is electrically connected with the circuit board (17), the other end of the right mounting position (141) is connected with one end of the right transverse elastic piece (142) and enables the right transverse elastic piece (142) to incline downwards, the right movable contact (143) is arranged at the other end of the right transverse elastic piece (142), and the right movable contact (143) can be in touch electrical connection with the right stationary contact (161).

7. The earth leakage protection plug according to claim 6, wherein the left mounting position (131) comprises a left longitudinal spring (1311), two sides of the left longitudinal spring (1311) are provided with raised left limiting spring (1312), one end of the left longitudinal spring (1311) is electrically connected with the circuit board (17), the other end of the left longitudinal spring (1311) is connected with one end of the left transverse spring (132) and the left transverse spring (132) is inclined downwards; the right mounting position (141) comprises a right longitudinal elastic sheet (1411), two sides of the right longitudinal elastic sheet (1411) are provided with raised right limiting elastic sheets (1412), one end of the right longitudinal elastic sheet (1411) is electrically connected with the circuit board (17), the other end of the right longitudinal elastic sheet (1411) is connected with one end of the right transverse elastic sheet (142) and enables the right transverse elastic sheet (142) to incline downwards; longitudinal elastic sheet positioning grooves (75) are respectively formed in the left side and the right side of the tripping frame (7); the left longitudinal elastic sheet (1311) and the right longitudinal elastic sheet (1411) are respectively inserted into the corresponding longitudinal elastic sheet positioning grooves (75), and the left limiting elastic sheet (1312) and the right limiting elastic sheet (1412) are respectively positioned in the corresponding longitudinal elastic sheet positioning grooves (75).

8. The earth leakage protection plug according to claim 1, wherein the circuit board (17) is further provided with a test switch (2) and a silica gel sleeve (3), and the top of the silica gel sleeve (3) extends out of the housing (1) and is sleeved on the top of the reset button (12) and the test switch (2).

Images