A separate leakage protector

Abstract

The invention discloses a separate leakage protector, which relates to the technical field of electrical equipment protection, including: a protector device, a plug pin, a bottom plate and a spring; the protector device includes a connection maintaining device, a connection device and a locking device; the locking device includes a spring pressure block and a locking lever; the locking lever is provided with a lock buckle, a movable pressure plate and a buckle slide; the spring pressure block is provided with a pressure rod, a buckle and a vertical fork groove; the connection device is provided with a second iron core extending laterally, and the second iron core is engaged with the vertical fork groove; the connection maintaining device is provided with a first iron core fixed longitudinally, and the first iron core is adsorbed and matched with the movable pressure plate, and the spring pressure block includes a pressure block upper part and a pressure block lower part; the invention can disconnect the leakage protector through the matching relationship between mechanical structures when the maintenance coil fails; the use of a pressure block spring can enable the pressure rod at the lower part of the pressure block to apply a stable pressing force to the spring, and the service life of the leakage protector is greatly improved by the setting of the movable pressure plate.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment protection, in particular to a separate type leakage protector. Background Art

[0002] When leakage fault occurs in the equipment or when protection is needed for people who are at risk of electric shock, leakage protector can disconnect the main line in time, thus it is widely used. The application technology of leakage protector is very mature. From the protection principle, there are voltage type and current type. From the mechanical structure, there are self-locking type and pull-in type. The leakage protector of mechanical self-locking structure type of current or voltage is usually used. The biggest feature of the mechanical self-locking structure is that when the power supply of the leakage protector in operation is interrupted or the power supply circuit is missing a phase or the line contact is poor, the mechanical self-locking structure of the leakage protector in the closed state will not be able to actively open the closed contacts. At this time, if the power supply circuit is abnormally missing a phase and the ground wire is abnormally energized or leaking, the leakage protector will lose its protective function, resulting in a safety accident. In response to the above problems, in the present invention, a self-release mechanical structure is designed, which adopts a coil to continuously power supply to attract and release the mechanism. When the power supply is interrupted, the contact is poor, or the phase is missing, the mechanical structure attracts and holds the circuit and cannot generate magnetic force to attract the self-release mechanism due to the loss of voltage, resulting in the release circuit being disconnected and the closed contacts being disconnected, thereby forming active protection and eliminating safety hazards. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the above-mentioned defects in the prior art, the present invention provides a separate leakage protector to solve the problem that the leakage protector can only break the circuit when powered on, and also solves the problem that the leakage protector is easy to wear and has a short service life.

[0005] 2. Technical Solution

[0006] In order to solve the above technical problems, the present invention provides a separate leakage protector, comprising: a protector device, a pin, a bottom plate and a spring, wherein the protector device is arranged at the upper part of the bottom plate, the protector device controls the opening and closing of the separate leakage protector, and the pin is arranged at the lower part of the bottom plate;

[0007] The protector device comprises a connection maintaining device, a connection device and a locking device, wherein the locking device is arranged between the connection maintaining device and the connection device and is used to control the disconnection and closing of the spring sheet and the plug pin;

[0008] The locking device includes a spring piece pressure block and a locking lever, the locking lever is movably hinged to a second support arranged on the connecting device through a second pin shaft, and the spring piece pressure block is movably hinged to a first support arranged in the middle position of the bottom plate through a first pin shaft; a lock buckle, a movable pressure plate and a buckle slide are arranged on the locking lever; the spring piece pressure block includes a pressure block upper part and a pressure block lower part, a buckle and a vertical fork groove are arranged on the pressure block upper part, a pressure rod is arranged on the pressure block lower part, the pressure block upper part and the pressure block lower part are hinged through the first pin shaft, a pressure block spring in a compressed state is arranged between the pressure block upper part and the pressure block lower part, when the pressure rod and the spring piece are in abutment state, the elastic force of the pressure block spring can make the pressure rod maintain a stable force on the spring piece, and the buckle is used to cooperate with the lock buckle to abut;

[0009] The connecting device is provided with a second iron core extending laterally, and the second iron core is engaged with the vertical fork groove; the connecting maintaining device includes a first iron core arranged longitudinally, and the first iron core can be used for magnetic adsorption and cooperation with the movable pressing plate;

[0010] When the power is turned on, the second iron core drives the spring sheet pressing block to rotate through the vertical fork groove, so that the pressure rod at the bottom of the spring sheet pressing block presses the spring sheet downward, and the buckle slides upward along the buckle slideway. In the process of the buckle sliding to abut against the lock buckle, the movable pressure plate continues to move downward, and the movable pressure plate is fixed by the first iron core; the connection maintaining device is used to fix the position of the locking lever, so that the spring sheet pressing block remains in a pressed state, and the spring sheet and the pin remain in a connected state, thereby realizing circuit connection;

[0011] When the power is disconnected, the connection maintaining device stops working, the locking lever is released, the lock catch and the buckle are disengaged, so that the spring piece is disconnected from the pin, thereby achieving circuit breaking.

[0012] Among them, a hinge seat is provided at the hinge between the upper part and the lower part of the pressing block, the first pin shaft is passed through the hinge seat, and a limit block is also provided on the hinge seat. The limit block is used to control the opening angle between the upper part and the lower part of the pressing block when rotating with the first pin shaft as the axis.

[0013] Among them, the spring clip includes a first spring clip, a second spring clip and a PE line spring clip. The first spring clip and the second spring clip are fixed by spring clip slots arranged on both sides of the connectivity maintaining device. The PE line spring clip passes through the bottom of the connectivity maintaining device and is clamped and fixed by the bottom plate and the connectivity maintaining device. An electrical connection contact is arranged on the top of the pin, and a spring clip contact corresponding to the electrical connection contact is arranged at the end of the spring clip. When the pressure rod presses the spring clip down, the spring clip contact contacts with the electrical connection contact. The spring clip contacts on the first spring clip, the second spring clip and the PE line spring clip can be disconnected from the electrical connection contact.

[0014] Among them, the spring clip includes a first spring clip and a second spring clip, and the first spring clip and the second spring clip are fixed by spring clip slots arranged on both sides of the connection maintaining device; an electrical connection contact is arranged on the top of the pin, and the ends of the first spring clip and the second spring clip are both provided with spring clip contacts corresponding to the electrical connection contacts, and when the pressure rod presses the spring clip down, the spring clip contacts are in contact with the electrical connection contacts; the spring clip contacts on the first spring clip and the second spring clip can be disconnected from the electrical connection contacts, and the PE line cannot be disconnected and remains connected.

[0015] Wherein, wedge-shaped buckle feet are provided at the bottom of the connection maintaining device and the connection device, and the connection maintaining device and the connection device are buckled and fixed to the bottom plate respectively through the buckle feet.

[0016] The connecting device further comprises a connecting coil and a connecting spring. The connecting coil is fixed inside the connecting device. The connecting spring and the second iron core are arranged horizontally in the inner cavity of the connecting coil in sequence.

[0017] Among them, the connectivity maintaining device also includes an L-shaped metal plate and a maintaining coil. The maintaining coil is fixed inside the connectivity maintaining device, and the first iron core is vertically fixed in the inner cavity of the maintaining coil. One end of the first iron core is fixedly connected to the bottom plate of the metal plate, and the side plate of the metal plate and the other end of the first iron core are used to adsorb and fix the movable pressure plate.

[0018] The second pin shaft includes a sleeve portion and a rotation axis, the sleeve portion is arranged on the locking lever, the rotation axis is arranged on the second support, the sleeve portion is sleeved outside the rotation axis, and the locking lever can rotate around the rotation axis through the sleeve portion.

[0019] Among them, a pre-articulation device is provided on the articulated seat, and the pre-articulation device includes a boss and a clamping groove. The boss is located at the hinge of the upper part of the pressing block, and the clamping groove is located at the hinge of the lower part of the pressing block. The pre-articulation of the upper part and the lower part of the pressing block is achieved through the cooperation of the boss and the clamping groove.

[0020] Among them, a pre-articulation device is provided on the articulated seat, which includes a boss and a clamping groove. The clamping groove is located at the hinge of the upper part of the pressing block, and the boss is located at the hinge of the lower part of the pressing block. The pre-articulation of the upper part and the lower part of the pressing block is achieved through the cooperation of the boss and the clamping groove.

[0021] Among them, a clamping top block is also provided on the locking lever, and the clamping top block is located on one side of the lock. When the power is turned on, the second iron core drives the spring plate clamping block to rotate through the vertical fork groove, and the buckle slides upward along the buckle slideway, and the buckle slides through the lock and then instantly abuts against the clamping top block. By abutting against the clamping top block, the movable pressure plate moves downward and is thus adsorbed and fixed by the first iron core.

[0022] Among them, the locking lever is also provided with an indicator block, which is located on the upper part of the locking lever. When the power is turned on, the indicator block moves into the observation window of the protector housing. When the power is turned off, the indicator block moves out of the observation window of the protector housing. The indicator block is red in color.

[0023] Among them, a limit baffle is also provided on the locking lever, which is arranged at the end of the locking lever and located on the upper part of the second support. When the power is disconnected, the limit baffle can abut against the second support to limit the rotation angle of the locking lever.

[0024] Among them, a protrusion is provided on the pressure rod corresponding to the PE line spring piece. When the pressure rod is pressed down, the protrusion makes the PE line spring piece connected to the plug pin before the first spring piece and the second spring piece; when the pressure rod is lifted, the protrusion makes the PE line spring piece disconnected from the plug pin after the first spring piece and the second spring piece.

[0025] A pressure plate pin hole is also provided on the locking lever, and the movable pressure plate is hingedly connected with the pressure plate pin hole through a pin shaft.

[0026] 3. Beneficial Effects

[0027] Compared with the prior art, the separate leakage protector provided by the present invention can disconnect the separate leakage protector through the cooperation relationship between the mechanical structures when the coil fails, thereby greatly improving the safety during use; at the same time, the separate leakage protector of the present invention is more reliable and the safety performance is further enhanced through the design of the buckle slide and the spring;

[0028] The spring sheet pressing block is formed by combining the upper and lower parts of the pressing block through the pressing block spring, so that the spring sheet pressing block does not rely solely on the fixed limit mechanical structure in the process of pressing the spring sheet. The pressing block spring can make the pressing rod at the lower part of the pressing block apply a stable pressing force to the spring sheet, and after mechanical wear due to long-term use, the elastic force of the pressing block spring can also increase the opening angle between the upper and lower parts of the pressing block when rotating with the first pin as the axis, thereby ensuring the pressing force of the pressing rod at the lower part of the pressing block on the spring sheet, so that the electrical connection in the separate leakage protector is stable and reliable.

[0029] And by setting the pressing top block, the buckle can push the movable pressing plate to rotate an additional angle, so that the first iron core can more easily absorb the movable pressing plate;

[0030] Furthermore, the rotation angle range of the locking lever is limited by the limiting effect of the limiting baffle; and the service life of the separate leakage protector is greatly improved by the design of the movable pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1It is an exploded view of the separate leakage protector of the present invention;

[0032] Figure 2 It is a three-dimensional diagram of the separate leakage protector of the present invention;

[0033] Figure 3 This is a structural diagram of the separate type leakage protector of the present invention in the power supply disconnection state;

[0034] Figure 4 This is a structural diagram of the power-on state of the separate leakage protector of the present invention;

[0035] Figure 5 It is a structural diagram of the locking device of the separate leakage protector of the present invention;

[0036] Figure 6 It is a structural diagram of the locking lever of the separate type leakage protector of the present invention;

[0037] Figure 7 The spring piece pressing block structure of the separate leakage protector of the present invention Figure 1 ;

[0038] Figure 8 The spring piece pressing block structure of the separate leakage protector of the present invention Figure 2 ;

[0039] Fig. 9 This is a structural diagram of Embodiment 2 of the separate leakage protector of the present invention;

[0040] Fig.10 It is an internal structure diagram of the connection maintaining device of the present invention;

[0041] In the figure: 1 is a protector housing; 2 is a protector device; 3 is a pin; 4 is a bottom plate; 5 is a spring; 6 is a connection maintaining device; 7 is a connection device; 8 is a locking device; 8a is a spring pressure block; 8b is a locking lever; 8c is the upper part of the pressure block; 8d is the lower part of the pressure block; 9 is a pressure block spring; 10 is a buckle foot; 11 is a limit baffle; 12 is a limit block; 13 is a boss; 14 is a clamping groove; 15 is an observation window; 16 is an electrical connection contact; 21 is a first pin shaft; 22 is a pressure rod; 23 is a vertical fork groove; 24 is a buckle; 31 is a second pin shaft; 33 is a lock; 34 is a movable pressure plate; 35 is a pressing top block; 36 is a buckle slideway; 41 is a convex block; 42 is an indicator block; 43 is a first support; 51 is a spring contact; 52 is a first spring; 53 is a second spring; 54 is a PE wire spring; 55 is a spring slot; 56 is a metal plate; 61 is a maintaining coil; 62 is a first iron core; 63 is a pressure plate pin hole; 64 is a second support; 71 is a connecting coil; 72 is a second iron core; 73 is a connecting spring. DETAILED DESCRIPTION

[0042] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0043] Embodiment 1:

[0044] A separate leakage protector according to an embodiment of the present invention, such as Figure 1 and Figure 2 As shown, it includes: a protector housing 1, a protector device 2, a pin 3, a bottom plate 4 and a spring 5, the protector device 2 is arranged on the upper part of the bottom plate 4, the protector device 2 controls the opening and closing of the separate leakage protector, and the pin 3 is arranged on the lower part of the bottom plate 4;

[0045] The protector device 2 includes a connection maintaining device 6, a connection device 7 and a locking device 8. The locking device 8 is arranged between the connection maintaining device 6 and the connection device 7 and is used to control the disconnection and closing of the spring 5 and the pin 3.

[0046] The locking device 8 includes a spring piece pressing block 8a and a locking lever 8b. The locking lever 8b is movably hinged to the second support 64 arranged on the connecting device 7 through the second pin shaft 31. The spring piece pressing block 8a is movably hinged to the first support 43 arranged in the middle position of the bottom plate 4 through the first pin shaft 21. The locking lever 8b is provided with a lock buckle 33, a movable pressure plate 34 and a buckle slideway 36. The spring piece pressing block 8a includes a pressing block upper part 8c and a pressing block lower part 8d. The pressing block upper part 8c is provided with a buckle 24 and a vertical fork groove 2 3. A pressure rod 22 is provided on the lower part 8d of the pressure block. The upper part 8c of the pressure block is hinged with the lower part 8d of the pressure block through a first pin shaft 21. A compression block spring 9 is provided between the upper part 8c of the pressure block and the lower part 8d of the pressure block. When the pressure rod 22 and the spring sheet 5 are in abutment, the elastic force of the pressure block spring 9 can make the pressure rod 22 maintain a stable force on the spring sheet 5. The buckle 24 is used to cooperate with the lock buckle 33 to abut. The positions of the first support 43 and the second support 64 can be adjusted according to different needs of customers.

[0047] like Figure 6 , Figure 7 and Figure 8 As shown, hinge seats are respectively provided at the hinged joints of the upper and lower parts of the pressing block, and the first pin shaft 21 is penetrated in the hinge seats, so that the upper and lower parts of the pressing block can rotate around the first pin shaft 21. A limit stopper 12 is also provided on the hinge seat, and the limit stopper 12 is used to control the opening angle between the upper part 8c of the pressing block and the lower part 8d of the pressing block when rotating with the first pin shaft 21 as the axis, that is, the rotation angle of the upper part 8c of the pressing block and the lower part 8d of the pressing block around the first pin shaft 21 is within a certain range. At the same time, this design can also ensure that the spring piece pressing block 8a will not automatically disintegrate after assembly due to the elastic force of the pressing block spring 9 after assembly is completed, that is, the upper part 8c of the pressing block and the lower part 8d of the pressing block can be limited;

[0048] Spring grooves are provided at the positions of the pressing block spring 9 corresponding to the upper and lower parts of the pressing block, and the spring grooves are used to install the pressing block spring 9, and at the same time, it can also ensure that the pressing block spring will not fall off, and the installation is simpler and more convenient. Further, a spring column is provided in the spring groove, and the spring column is used to install the pressing block spring 9. The pressing block spring 9 is sleeved on the spring column to enhance the installation and fixing effect;

[0049] The connecting device 7 is provided with a second iron core 72 extending transversely, and the second iron core 72 is engaged with the vertical fork groove 23; the connecting maintaining device 6 is provided with a first iron core 62 arranged longitudinally, and the first iron core 62 is fixed on the connecting maintaining device 6, and the first iron core 62 is engaged with the movable pressing plate 34 by adsorption;

[0050] like Figure 1 and Figure 5 As shown, when the buckle 24 slides counterclockwise along the buckle slideway 36, the locking lever 8b can continue to rotate clockwise, so as to avoid the movable pressing plate 34 from pausing or jumping during the counterclockwise sliding of the buckle 24 along the buckle slideway 36, because the pausing or jumping will affect the speed of the movable pressing plate 34 and the first iron core 62 being adsorbed and fixed, and too slow a speed will cause the leakage protector to fail to connect;

[0051] like Figure 1 and Figure 4 As shown, when the power is turned on, the second iron core 72 drives the spring piece pressing block 8a to rotate through the vertical fork groove 23, so that the pressing rod 22 located at the bottom of the spring piece pressing block 8a presses the spring piece 5 downward, and the buckle 24 slides upward along the buckle slideway 36, and in the process of the buckle 24 sliding to abut against the lock buckle 33, the movable pressing plate 34 drives the continuous downward movement; the movable pressing plate 34 is fixed by the first iron core 62, and the maintaining device 6 is also connected to fix the position of the locking lever 8b, so that the spring piece pressing block 8a is kept in the pressed state, and the spring piece 5 and the pin 3 are kept in the closed state, thereby realizing the circuit connection;

[0052] like Figure 1 and Figure 3 As shown, when the power is disconnected, the connection maintaining device 6 stops working, the locking lever 8b is released, the lock catch 33 is disengaged from the buckle 24, so that the spring 5 is disconnected from the pin 3, thereby achieving circuit breaking.

[0053] like Figure 1 and Figure 2As shown, the locking lever 8b is also provided with an indicator block 42, which is located at the upper part of the locking lever 8b. When the power is turned on, the indicator block 42 moves into the observation window 15 of the protector housing 1. When the power is turned off, the indicator block 42 moves out of the observation window 15 of the protector housing 1. The indicator block 42 can well indicate the working status of the leakage protector. The indicator block 42 is red in color, which is more eye-catching and has a good reminder effect.

[0054] like Figure 1 As shown, the spring piece 5 includes a first spring piece 52, a second spring piece 53 and a PE line spring piece 54. The first spring piece 52 and the second spring piece 53 are fixed by spring piece slots 55 arranged on both sides of the connection maintaining device 6. The PE line spring piece 54 passes through the bottom of the connection maintaining device 6 and is clamped and fixed by the bottom plate 4 and the connection maintaining device 6; three pins 3 of a neutral line, a live line and a PE line are arranged corresponding to the spring piece 5, and an electrical connection contact 16 is arranged on the top of the pin 3. A spring contact 51 corresponding to the electrical connection contact 16 is arranged at the end of the spring piece 5. When the pressure rod 22 presses the spring piece 5 down, the spring contact 51 contacts with the electrical connection contact 16, which can well ensure the stability of the circuit connection and avoid circuit connection problems during use; during use, the spring contact 51 on the PE line spring piece 54 can be disconnected from the electrical connection contact 16 on the pin 3 connected to the PE line;

[0055] In the above-mentioned first spring piece 52 is a live wire spring piece, the second spring piece 53 is a neutral wire spring piece, and the PE wire spring piece 54 is a ground wire spring piece.

[0056] like Figure 1 As shown, wedge-shaped buckle feet 10 are provided at the bottom of the connection maintaining device 6 and the connection device 7, and the connection maintaining device 6 and the connection device 7 are respectively buckled and fixed to the bottom plate 4 through the buckle feet 10; the installation is simple and convenient, and it is firm and reliable, and the mold can be directly used to open the mold, thereby reducing the production cost.

[0057] like Figure 1 As shown, the connecting device 7 also includes a connecting coil 71 and a connecting spring 73. The connecting coil 71 is fixed inside the connecting device 7. The connecting spring 73 and the second iron core 72 are horizontally arranged in the inner cavity of the connecting coil 71 in sequence. When the power is disconnected, the elastic force of the connecting spring 73 pushes out the second iron core 72 and causes the spring clamp 8a to rotate clockwise. At this time, the elastic force of the spring 5 also causes the spring clamp 8a to rotate clockwise, thereby lifting the pressure rod 22 and releasing the spring 5; when the power is turned on, the connecting coil 71 is energized, so that the second iron core 72 drives the spring clamp 8a to rotate counterclockwise by engaging with the vertical fork groove 23.

[0058] like Figure 1As shown, the connection maintaining device 6 also includes an L-shaped metal plate 56 and a maintaining coil 61. The maintaining coil 61 is fixed inside the connection maintaining device 6. The first iron core 62 is vertically fixed in the inner cavity of the maintaining coil 61. One end of the first iron core 62 is fixedly connected to the bottom plate of the metal plate 56. The side plate of the metal plate 56 and the other end of the first iron core 62 are used to adsorb and fix the movable pressing plate 34. Fig.10 As shown, a metal plate 56 is provided inside the connectivity maintaining device 6, and the metal plate 56 is L-shaped. One end of the first iron core 62 is fixed to the bottom of the metal plate 56. When the movable pressure plate 34 is adsorbed by the connectivity maintaining device 6, the movable pressure plate 34 abuts against the first iron core 62 and the side plate of the L-shaped metal plate 56 at the same time, ensuring that the connectivity maintaining device 6 stably adsorbs and fixes the movable pressure plate 34.

[0059] like Figure 5 As shown, a protrusion 41 is further provided at the position on the pressure rod 22 corresponding to the position where the PE line spring piece 54 is pressed, that is, the protrusion 41 on the pressure rod 22 is in direct contact with the PE line spring piece 54. When the pressure rod 22 is pressed down, the protrusion 41 makes the PE line spring piece 54 connected to the pin 3 before the first spring piece 52 and the second spring piece 53; when the pressure rod 22 is lifted, the protrusion 41 makes the PE line spring piece 54 disconnected from the pin 3 after the first spring piece 52 and the second spring piece 53. Specifically, when the power is turned on, the PE line spring piece 54 is first connected to the pin 3, and then the first spring piece 52 and the second spring piece 53 are connected to the pin 3. When the power is disconnected, the first spring piece 52 and the second spring piece 53 are first disconnected from the pin 3, and then the PE line spring piece 54 is disconnected from the pin 3.

[0060] When the spring clip 5 is pressed down, the protrusion 41 on the top of the PE wire spring clip 54 will first contact the PE wire spring clip 54, so that the spring clip contact 51 on the PE wire spring clip 54 will first contact the electrical connection contact 16 on the pin 3 connected to the PE wire, and then the spring clip contact 51 of the live wire spring clip and the spring clip contact 51 of the neutral wire spring clip will contact the electrical connection contact 16 on the pin 3. Therefore, in the process of circuit connection, the ground wire is contacted and connected first, and the neutral wire and the live wire are contacted and connected later.

[0061] When the spring clip 5 is reset and moved upward, the spring contact 51 of the live wire spring clip and the spring contact 51 of the neutral wire spring clip are separated from the electrical connection contact 16 on the pin 3 first, and then the spring contact 51 on the PE wire spring clip 54 is separated from the electrical connection contact 16 on the pin 3 connected to the PE wire. Therefore, in the power-off operation, the live and neutral wires are separated first, and then the ground wire is separated.

[0062] In the specific implementation, Figure 5As shown, the second pin shaft 31 includes a sleeve portion and a rotating axis center, the sleeve portion is arranged on the locking lever 8b, the rotating axis center is arranged on the second support 64, the sleeve portion is sleeved on the outside of the rotating axis center, and the locking lever 8b can rotate around the rotating axis center through the sleeve portion; the arrangement of the sleeve portion and the rotating axis center of the second pin shaft 31 here can well solve the problem of wear between the second pin shaft 31 and the second support 64 caused by frequent opening and closing actions of the leakage protector during actual use of the separate leakage protector of the present invention; in the specific implementation, the first pin shaft 21 and the first support 43 adopt the same hinge structure, which can effectively ensure the service life of the separate leakage protector of the present invention.

[0063] Embodiment 2:

[0064] like Fig. 9 As shown, compared with Example 1, the spring sheet 5 includes a first spring sheet 52 and a second spring sheet 53, and the first spring sheet 52 and the second spring sheet 53 are fixed by spring sheet slots 55 arranged on both sides of the connection maintaining device 6; an electrical connection contact 16 is arranged on the top of the pin 3, and spring sheet contacts 51 corresponding to the electrical connection contact 16 are arranged at the ends of the first spring sheet 52 and the second spring sheet 53. When the pressure rod 22 presses the spring sheet 5 down, the spring sheet contact 51 contacts the electrical connection contact 16; in this embodiment, the first spring sheet 52 and the second spring sheet 53 correspond to the live wire pin and the neutral wire pin respectively, and the PE line cannot be disconnected, and in this embodiment, the setting of the PE line spring sheet 54 is removed, and the PE line pin is connected to the PE line through a wire, so that the PE line remains in a continuously connected state.

[0065] Embodiment 3:

[0066] like Figure 7 and Figure 8 As shown, compared with Example 1, a pre-articulation device is provided on the articulated seat, and the pre-articulation device includes a boss 13 and a clamping groove 14, the boss 13 is located at the hinge of the upper part 8c of the pressure block, and the clamping groove 14 is located at the hinge of the lower part 8d of the pressure block. Through the cooperation of the boss 13 and the clamping groove 14, the pre-articulation of the upper part 8c of the pressure block and the lower part 8d of the pressure block is achieved, that is, even if the first pin shaft 21 is not installed, the installation of the spring piece pressure block 8a can be completed. At the same time, this design can further ensure the coaxiality of the upper part 8c of the pressure block and the lower part 8d of the pressure block, which can reduce wear and the overall installation is simpler and more convenient.

[0067] Embodiment 4:

[0068] Compared with the third embodiment, the boss 13 is located at the hinge of the lower part 8d of the pressing block, and the pre-hinged connection between the upper part 8c of the pressing block and the lower part 8d of the pressing block is achieved through the cooperation between the boss 13 and the clamping groove 14.

[0069] Embodiment 5:

[0070] like Figure 5 and Figure 6 As shown, compared with the first embodiment, the locking lever 8b is further provided with a pressing top block 35, and the pressing top block 35 is located on one side of the lock buckle 33. When the power is turned on, the second iron core 72 drives the spring sheet pressing block 8a to rotate through the vertical fork groove 23, and the buckle 24 slides upward along the buckle slideway 36. After the buckle 24 slides through the lock buckle 33, it abuts against the pressing top block 35 instantaneously, and the movable pressing plate 34 moves downward to the lowest position by abutting against the pressing top block 35. That is, by setting the clamping top block 35, the buckle 24 can push the movable pressure plate 34 to rotate an additional angle, so that the movable pressure plate 34 can move to the lowest position. When the power is turned on, the second iron core 72 can instantly retract and pull the spring pressure block 8a to the position with the maximum rotation angle. At this time, the buckle 24 passes through the buckle slide 36 and the lock buckle 33 in turn, and finally abuts against the clamping top block 35, so that the buckle 24 can push the movable pressure plate 34 to rotate an additional angle. After moving to the lowest position, it can ensure that the first iron core 62 adsorbs the movable pressure plate 34 under the action of the maintaining coil 61.

[0071] Embodiment 6:

[0072] like Figure 1 and Figure 5 As shown, compared with Example 1, a limit baffle 11 is further provided on the locking rod 8b, and the limit baffle 11 is arranged at the end of the locking rod 8b and is located on the upper part of the second support 64. When the power is disconnected, the limit baffle 11 can abut against the second support 64 to limit the rotation angle of the locking rod 8b, that is, the limit baffle 11 abuts against the top surface of one side of the second support 64, so that after the power is disconnected, the locking rod 8b can only rotate around the second pin shaft 31 within a limited range to prevent it from affecting other parts.

[0073] Embodiment 7:

[0074] In Example 7, a pressure plate pin hole 63 is further provided on the locking lever 8b, and the pressure plate pin hole 63 is located at the upper part of the locking lever 8b. The movable pressure plate 34 is hinged with the pressure plate pin hole (63) through a pin shaft, that is, the movable pressure plate 34 and the locking lever 8b are in a movable hinged state. The movable pressure plate 34 can rotate around the pin shaft within a certain range, which can ensure that the movable pressure plate 34 has a maximum contact area when it is in adsorption contact with the first iron core 62, ensuring a larger adsorption force, and effectively improving the service life of the separate leakage protector.

[0075] The separate leakage protector of the present invention is connected to the circuit to be protected during actual operation. When the power is turned on, the connection coil 71 in the connection device 7 is energized, and the second iron core 72 retracts. Since the second iron core 72 is engaged with the vertical fork groove 23 on the spring sheet pressing block 8a, the spring sheet pressing block 8a is rotated when the second iron core 72 retracts. The pressure rod 22 at the bottom of the spring sheet pressing block 8a presses the spring sheet 5 downward. The electrical connection contact 16 is in contact with the spring contact 51 to form a passage, and the buckle 24 is in abutment with the lock 33. At this time, the first iron core 62 adsorbs the movable pressure plate 34 under the action of the maintaining coil 61, so that the movable pressure plate 34 is always in a pressed state, so that the leakage protector maintains the circuit connection; when the circuit is connected, the red indicator block 42 on the fork groove pressure rod 14 moves to the bottom of the observation window 15 to play an indicating effect; when the circuit to be protected encounters leakage or power failure, the connection maintaining device 6 stops working, the movable pressure plate 34 loses the downward adsorption force of the first iron core 62, the buckle 24 is disengaged from the lock 33, and the spring pressure block 8a no longer presses the spring 5 down, so that the leakage protector is disconnected to achieve the purpose of protection.

[0076] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A separate leakage protector, characterized in that: The separate type leakage protector comprises: a protector device (2), a plug pin (3), a base plate (4) and a spring (5); the protector device (2) is arranged on the upper part of the base plate (4); the protector device (2) controls the opening and closing of the separate type leakage protector; and the plug pin (3) is arranged on the lower part of the base plate (4); The protector device (2) comprises a connection maintaining device (6), a connection device (7) and a locking device (8), wherein the locking device (8) is arranged between the connection maintaining device (6) and the connection device (7) and is used to control the disconnection and closing of the spring sheet (5) and the plug pin (3); The locking device (8) comprises a spring-type pressure block (8a) and a locking lever (8b); the locking lever (8b) is movably hinged to a second support (64) arranged on the connecting device (7) via a second pin shaft (31); the spring-type pressure block (8a) is movably hinged to a first support (43) arranged at a middle position of the bottom plate (4) via a first pin shaft (21); the locking lever (8b) is provided with a lock buckle (33), a movable pressure plate (34) and a buckle slideway (36); The spring sheet pressure block (8a) comprises a pressure block upper part (8c) and a pressure block lower part (8d); the pressure block upper part (8c) is provided with a buckle (24) and a vertical fork groove (23); the pressure block lower part (8d) is provided with a pressure rod (22); the pressure block upper part (8c) and the pressure block lower part (8d) are hingedly connected via a first pin shaft (21); a pressure block spring (9) in a compressed state is provided between the pressure block upper part (8c) and the pressure block lower part (8d); when the pressure rod (22) and the spring sheet (5) are in abutment state, the elastic force of the pressure block spring (9) enables the pressure rod (22) to maintain a stable force on the spring sheet (5); the buckle (24) is used to cooperate with the lock buckle (33) for abutment; The connecting device (7) is provided with a second iron core (72) extending laterally, the second iron core (72) being engaged with the vertical fork groove (23); the connecting maintaining device (6) comprises a first iron core (62) arranged longitudinally, the first iron core (62) being used for magnetically adsorbing and engaging with the movable pressing plate (34); The communication device (7) further comprises a communication coil (71) and a communication spring (73); the communication coil (71) is fixed inside the communication device (7); and the communication spring (73) and the second iron core (72) are horizontally arranged in the inner cavity of the communication coil (71); When the power is turned on, the second iron core (72) drives the spring sheet pressing block (8a) to rotate through the vertical fork groove (23), so that the pressure rod (22) located at the bottom of the spring sheet pressing block (8a) presses the spring sheet (5) downward, and at the same time the buckle (24) slides upward along the buckle slideway (36), and in the process of the buckle (24) sliding to abut against the lock buckle (33), the movable pressure plate (34) continues to move downward, and the movable pressure plate (34) is adsorbed and fixed by the first iron core (62); the connection maintaining device (6) is used to fix the position of the locking lever (8b), so that the spring sheet pressing block (8a) remains in a pressed state, and the spring sheet (5) and the plug pin (3) remain in a connected state, thereby achieving circuit connection; When the power supply is disconnected, the connection maintaining device (6) stops working, the locking lever (8b) is released, the lock buckle (33) is disengaged from the buckle (24), so that the spring sheet (5) is disconnected from the plug pin (3), thereby achieving circuit disconnection; The second pin shaft (31) comprises a sleeve portion and a rotation axis, the sleeve portion is arranged on the locking lever (8b), the rotation axis is arranged on the second support (64), the sleeve portion is sleeved on the outside of the rotation axis, and the locking lever (8b) rotates around the rotation axis through the sleeve portion.

2. The separate leakage protector according to claim 1, characterized in that: The spring piece (5) comprises a first spring piece (52), a second spring piece (53) and a PE line spring piece (54); the first spring piece (52) and the second spring piece (53) are fixed by spring piece clamping grooves (55) arranged on both sides of the connection maintaining device (6); the PE line spring piece (54) passes through the bottom of the connection maintaining device (6) and is clamped and fixed by the bottom plate (4) and the connection maintaining device (6); An electrical connection contact (16) is provided at the top of the plug pin (3); and ends of the first spring sheet (52), the second spring sheet (53) and the PE line spring sheet (54) are provided with spring sheet contacts (51) corresponding to the electrical connection contact (16); when the pressing rod (22) presses the spring sheet (5) down, the spring sheet contacts (51) come into contact with the electrical connection contact (16), and the spring sheet contacts (51) on the first spring sheet (52), the second spring sheet (53) and the PE line spring sheet (54) are disconnected from the electrical connection contact (16).

3. The separate leakage protector according to claim 1, characterized in that: A hinge seat is provided at the hinged joint between the upper part (8c) and the lower part (8d) of the pressing block, the first pin shaft (21) is inserted into the hinge seat, and a limit stopper (12) is also provided on the hinge seat, the limit stopper (12) is used to control the opening angle between the upper part (8c) and the lower part (8d) of the pressing block when rotating with the first pin shaft (21) as the axis.

4. The separate leakage protector according to claim 1, characterized in that: The bottoms of the connection maintaining device (6) and the connection device (7) are both provided with wedge-shaped buckle feet (10), and the connection maintaining device (6) and the connection device (7) are respectively buckled and fixed to the bottom plate (4) via the buckle feet (10).

5. The separate leakage protector according to claim 3, characterized in that: The hinge seat is provided with a pre-articulation device, the pre-articulation device comprising a boss (13) and a clamping groove (14), the boss (13) being located at the hinge of the upper part (8c) of the pressing block, and the clamping groove (14) being located at the hinge of the lower part (8d) of the pressing block, and the pre-articulation of the upper part (8c) of the pressing block and the lower part (8d) of the pressing block is achieved through the cooperation of the boss (13) and the clamping groove (14).

6. The separate leakage protector according to claim 3, characterized in that: The hinge seat is provided with a pre-articulation device, the pre-articulation device comprising a boss (13) and a clamping groove (14), the clamping groove (14) being located at the hinge of the upper part (8c) of the pressing block, and the boss (13) being located at the hinge of the lower part (8d) of the pressing block, and the pre-articulation of the upper part (8c) of the pressing block and the lower part (8d) of the pressing block is achieved through the cooperation of the boss (13) and the clamping groove (14).

7. The separate leakage protector according to claim 1, characterized in that: The locking lever (8b) is also provided with a pressing top block (35), and the pressing top block (35) is located on one side of the lock buckle (33). When the power is turned on, the second iron core (72) drives the spring plate pressing block (8a) to rotate through the vertical fork groove (23), and the buckle (24) slides upward along the buckle slideway (36). After the buckle (24) slides through the lock buckle (33), it abuts against the pressing top block (35) instantaneously, and the movable pressure plate (34) moves downward by abutting against the pressing top block (35), so that it is adsorbed and fixed by the first iron core (62).

8. The separate leakage protector according to claim 1, characterized in that: The upper part (8c) and the lower part (8d) of the pressing block are both provided with spring grooves at positions corresponding to the positions where the pressing block spring (9) is provided. A spring column is also provided in the spring groove. The spring groove and the spring column are used to install the pressing block spring (9).

9. The separate leakage protector according to claim 1, characterized in that: The locking lever (8b) is also provided with an indicator block (42), the indicator block (42) being located at the upper part of the locking lever (8b); when the power is turned on, the indicator block (42) moves into the observation window (15) of the protector housing (1); when the power is turned off, the indicator block (42) moves out of the observation window (15) of the protector housing (1); the indicator block (42) is red in colour.

10. The separate leakage protector according to claim 1, characterized in that: The locking lever (8b) is also provided with a limit baffle (11), which is arranged at the end of the locking lever (8b) and located on the upper part of the second support (64); when the power is disconnected, the limit baffle (11) abuts against the second support (64) to limit the rotation angle of the locking lever (8b).

11. The separate leakage protector according to claim 1, characterized in that: The spring sheet (5) comprises a first spring sheet (52) and a second spring sheet (53), and the first spring sheet (52) and the second spring sheet (53) are fixed via spring sheet clamping grooves (55) provided on both sides of the communication maintaining device (6); An electrical connection contact (16) is provided at the top of the plug pin (3); and ends of the first spring sheet (52) and the second spring sheet (53) are provided with spring sheet contacts (51) corresponding to the electrical connection contact (16); when the pressing rod (22) presses the spring sheet (5) down, the spring sheet contacts (51) contact the electrical connection contact (16); the spring sheet contacts (51) on the first spring sheet (52) and the second spring sheet (53) are disconnected from the electrical connection contact (16), and the PE line cannot be disconnected and remains connected.

12. The separate leakage protector according to claim 2, characterized in that: A protrusion (41) is provided on the pressure rod (22) at a position corresponding to the PE wire spring piece (54); when the pressure rod (22) is pressed down, the protrusion (41) causes the PE wire spring piece (54) to be connected to the plug pin (3) before the first spring piece (52) and the second spring piece (53); when the pressure rod (22) is lifted up, the protrusion (41) causes the PE wire spring piece (54) to be disconnected from the plug pin (3) after the first spring piece (52) and the second spring piece (53).

13. The separate leakage protector according to claim 1, characterized in that: A pressure plate pin hole (63) is also provided on the locking lever (8b), and the movable pressure plate (34) is hingedly connected to the pressure plate pin hole (63) via a pin shaft.

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