Combined leakage protection device

Abstract

The present disclosure provides a combined leakage protection device. The combined leakage protection device includes: an input end, an output end, a circuit breaker module and a ground fault circuit breaker module. The ground fault circuit breaker module includes a shell, and a ground fault signal processing unit, a drive component and a locking device arranged inside the shell. The locking device is attached to the circuit breaker module and has a locked state and an unlocked state. The locking device can be linked with the drive component to switch between the locked state and the unlocked state. The combined leakage protection device of the present disclosure can effectively provide power-off protection in the event of a leakage fault through the cooperation of the locking device and the drive component, and is suitable for a variety of electrical equipment to improve safety of use.

Description

Technical Field

[0001] The present disclosure generally relates to the field of leakage protection devices, and in particular to a combined leakage protection device with ground fault protection function and circuit breaker protection function. Background Art

[0002] With the improvement of living standards and people's safety awareness, the application scenarios of products with leakage protection function are becoming more and more extensive. Traditional circuit breakers cannot achieve power-off protection in the event of leakage, which brings the risk of electric shock to users and hidden dangers of electricity safety. In order to further protect personal safety and reduce the occurrence of electric shock hazards in the event of leakage, leakage protection devices came into being. The leakage protection device is a grounding protection device used to prevent accidents caused by electric shock and leakage. When a leakage fault occurs, it can cut off the power in time to protect personal and equipment safety.

[0003] The more mature leakage protection devices on the market, such as ground fault circuit interrupters (GFCIs), are mainly used for protection of small current scenarios such as 20 amps or less in household applications. Manufacturers and consumers expect to improve leakage protection devices so that they can be used in various applications such as high current scenarios according to different needs. Summary of the invention

[0004] Based on the above requirements, the present disclosure proposes a leakage protection device to meet different application scenarios in a cost-effective and reliable manner.

[0005] To this end, according to the present disclosure, a combined leakage protection device is provided, the combined leakage protection device includes an input end, which is configured to be coupled to a power supply; an output end, which is configured to be coupled to an electrical load; and a circuit breaker module and a ground fault circuit breaker module. The circuit breaker module has an open state and a closed state, which are respectively used to disconnect and connect the power connection between the input end and the output end. The ground fault circuit breaker module includes a housing, a ground fault signal processing unit arranged inside the housing, a drive component coupled to the ground fault signal processing unit, and a locking device. The drive component has a first position and a second position in response to the control of the ground fault signal processing unit. The locking device is attached to the circuit breaker module and has a locked state and an unlocked state, and the locking device can be linked with the drive component to switch between the locked state and the unlocked state.

[0006] According to the above technical concept, the present disclosure may further include any one or more of the following optional forms.

[0007] In some optional forms, the locking device includes a drive plate assembly and a locking rod attached to the circuit breaker module. In some optional forms, the drive plate assembly includes at least a drive plate and a locking plate. In some optional forms, the drive plate is attached to the circuit breaker module and is linked with the circuit breaker module to have a first position and a second position; the locking plate is attached to the drive plate and can move relative to the drive plate and has a first position and a second position. In some optional forms, when the locking plate is in the first position relative to the drive plate, the drive plate assembly and the locking rod are in a locking state, at which time the drive plate assembly can drive the locking rod to move; when the locking plate is in the second position relative to the drive plate, the drive plate assembly and the locking rod are in an unlocked state, at which time the locking rod moves independently relative to the drive plate assembly. In some optional forms, the drive plate assembly also includes an elastic member, which is arranged between the drive plate and the locking plate to return the locking plate from its second position to its first position. In some optional forms, the elastic member is in the form of a torsion spring, and the torsion spring is provided with an elastic winding and a first torsion spring foot and a second torsion spring foot. In some optional forms, the main body of the drive plate is a fan-shaped panel, and a boss is provided on one side of the fan-shaped panel, and the drive plate is attached to the circuit breaker module through the boss. In some optional forms, a pivot hole and a limit groove are also provided on the fan-shaped panel of the drive plate. In some optional forms, a limit block is also provided on the side wall of the limit groove. In some optional forms, the drive plate is also provided with a torsion spring hole buckle and a torsion spring foot buckle, and the elastic winding of the torsion spring is clamped on the torsion spring hole buckle of the drive plate, and the first torsion spring foot is clamped and fixed with the torsion spring foot buckle on the drive plate. In some optional forms, the lock plate is provided with a clamping end face, and the clamping end face abuts against the second torsion spring foot of the torsion spring. In some optional forms, the lock plate is attached to the drive plate, and one end of the lock plate is provided with a pivot so as to be able to pivot relative to the drive plate. In some optional forms, the lock plate is also provided with a limit column for limiting the movement stroke of the lock plate on the drive plate. In some optional forms, the limit column is provided with a limit hook for limiting the separation of the lock plate from the drive plate. In some optional forms, the lock plate is provided with a lock protrusion to drive the lock rod to move. In some optional forms, the drive assembly is used to drive the lock plate to move from a first position to a second position. In some optional forms, the lock rod is provided with a pivot hole, and the pivot hole is attached to the housing to enable the lock rod to pivot. In some optional forms, the lock rod is provided with a lock slot so that the drive plate assembly can drive the lock rod to move.

[0008] In some optional forms, the ground fault circuit breaker module includes an auxiliary switch coupled to the ground fault signal processing unit, and the auxiliary switch can be in an open state or a closed state in conjunction with the locking device. In some optional forms, the auxiliary switch is provided with an elastic drive arm, and the elastic drive arm abuts against the locking device. In some optional forms, the auxiliary switch is in an open state when the locking device is in an unlocked state. In some optional forms, the auxiliary switch is in a closed state when the locking device is in a locked state and the circuit breaker module is in a closed state.

[0009] In some optional forms, the driving assembly includes a coil assembly and an actuator rod, the actuator is used to drive the locking device to put the locking device in an unlocked state; the coil assembly is attached to the actuator and controls the movement of the actuator in response to the ground fault signal processing unit. In some optional forms, the coil assembly includes a coil winding, an iron core and an iron core spring. In some optional forms, the actuator is used to drive the circuit breaker module to put the circuit breaker module in an open state. In some optional forms, the actuator is provided with a pivot hole, and the pivot hole is attached to the housing so that the actuator can pivot. In some optional forms, a center hole is provided inside the coil winding, and the center hole is used to accommodate the iron core spring and the iron core. In some optional forms, the coil winding drives the iron core in response to the control of the ground fault signal processing unit, so that the iron core reciprocates in the center hole. In some optional forms, the iron core is provided with an iron core groove, and the iron core groove is attached to the actuator, thereby driving the actuator to move.

[0010] In some optional forms, the housing of the ground fault circuit breaker module includes an upper cover and a base; a ground fault signal processing unit and a driving component coupled to the ground fault signal processing unit are arranged in the cavity formed by the upper cover and the base. In some optional forms, the ground fault signal processing unit at least includes a detection magnetic ring for detecting a ground fault signal in a circuit loop passing through the detection magnetic ring; the housing is also provided with a through hole, which is concentric with the inner hole of the detection magnetic ring. In some optional forms, the housing also includes a cover plate, which is clamped on the upper cover and combined with the upper cover to form a housing space, and the housing space at least accommodates a part of the driving component or the locking device. In some optional forms, an opening is provided in the middle of the cover plate so that the ground fault circuit breaker module is attached and linked to the circuit breaker module. In some optional forms, at least one test hole is provided on the surface of the housing; the ground fault signal processing unit includes a test button; the test hole is used to allow part of the test button to pass through the housing. In some optional forms, at least one reset hole is provided on the surface of the housing; the ground fault signal processing unit includes a reset button; the reset hole is used to allow part of the reset button to pass through the housing. In some optional forms, at least one display hole is provided on the surface of the housing; the ground fault signal processing unit includes a display unit; the display hole is used to allow a display signal of the display unit to pass through the housing.

[0011] In some optional forms, the circuit breaker module and the ground fault interrupter module are connected and relatively fixed by a fixing device. In some optional forms, the fixing device is selected from at least one of rivets, bolts, and buckles.

[0012] The combined leakage protection device disclosed in the present invention can effectively provide power-off protection in the case of leakage faults by integrating a circuit breaker module and a ground fault circuit breaker module, and by cooperating with a locking device and a driving component, and is suitable for a variety of electrical equipment to improve the safety of use. The combined leakage protection device disclosed in the present invention has a simple structure, low cost, easy implementation, reliable performance, is suitable for automated production, and can be applied to various occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features and advantages of the present disclosure will be better understood through the following optional embodiments described in detail in conjunction with the accompanying drawings, in which:

[0014] Figure 1A , Figure 1B They are schematic diagrams of the appearance of a combined leakage protection device at different angles according to an embodiment of the present disclosure;

[0015] Figure 2A , Figure 2BThey are respectively exploded schematic diagrams of the circuit breaker module and the ground fault circuit breaker module in the combined leakage protection device from different angles, and show the assembly position relationship of the circuit breaker module, the locking device, the actuator, the cover plate and other components of the ground fault circuit breaker module;

[0016] Figure 3A , Figure 3B They are characteristic schematic diagrams of the contact surfaces of the circuit breaker module and the ground fault circuit breaker module in the combined leakage protection device;

[0017] Figure 4A This is a schematic diagram of the drive plate assembly of the locking device being assembled on the operating handle of the circuit breaker module. Figure 4B It is an exploded schematic diagram of the drive plate assembly and the operating handle;

[0018] Figure 5A , Figure 5B They are exploded schematic diagrams of the drive plate assembly at different angles, and show the detailed features of the drive plate, the locking plate and the torsion spring;

[0019] Fig. 6A This is a schematic diagram of the overall appearance of the ground fault circuit breaker module. Figure 6B , Figure 6C They are respectively exploded schematic diagrams of the ground fault circuit breaker module at different angles;

[0020] Fig. 7A is a characteristic diagram of the actuator. Figure 7B is a characteristic schematic diagram of a locking rod of a locking device, Figure 7C is an exploded schematic diagram of a coil assembly of a drive assembly;

[0021] Fig. 8A The schematic diagram is that the operating handle and the circuit breaker tripping rod of the circuit breaker module are respectively located in the first position, the driving assembly and the locking device are both in the first position, the locking device is in the locking state, and the locking plate in the locking device is in the first position;

[0022] Figure 8B The schematic diagram is a state diagram of the operating handle driving the locking device and the auxiliary switch to close when the operating handle and the circuit breaker tripping rod move from the first position to the second position, and the input end and the output end are not yet closed and connected;

[0023] Figure 8C A schematic diagram of a state in which the operating handle and the circuit breaker tripping rod are moved to the second position, the auxiliary switch remains in a closed state, and the input terminal and the output terminal are closed and connected;

[0024] Fig.9AA schematic diagram of a state in which, when the operating handle is in the second position and the input terminal is connected to the output terminal, the ground fault circuit breaker module detects a ground fault signal or a simulated ground fault signal and controls the drive assembly to operate, the actuator drives the circuit breaker tripping rod to place it in the first position, and drives the locking device to unlock it;

[0025] Fig. 9B A schematic diagram of a state when, after a ground fault signal or a simulated ground fault signal is detected and the circuit breaker trips, the ground fault is not eliminated or the reset button is not pressed and the operating handle is moved from the first position to the second position again, the auxiliary switch is turned on first, the ground fault circuit breaker module controls the drive assembly to act, the actuator drives the circuit breaker tripping rod to place it in the first position, and drives the locking device to unlock it. During this process, even if the operating handle is moved to the second position, the input end and the output end will not be closed and connected;

[0026] Fig. 9C When the operating handle is in the second position or cannot be returned to the first position due to special reasons, the ground fault circuit breaker module detects a ground fault signal or a simulated ground fault signal and controls the drive component to act, the actuator drives the circuit breaker tripping rod to place it in the first position, and drives the locking device to unlock, and the auxiliary switch is disconnected;

[0027] Fig. 10A It is a schematic diagram of the appearance of a combined leakage protection device with a two-pole circuit breaker module according to another embodiment of the present disclosure;

[0028] Fig. 10B The figure is a schematic diagram of the appearance of a combined leakage protection device with a three-pole circuit breaker module according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] The implementation and use of the embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are merely exemplary of specific ways to implement and use the present disclosure, and are not intended to limit the scope of the present disclosure. When describing the structural positions of the various components, such as up, down, top, bottom, etc., the expressions of directions are not absolute, but relative. When the various components are arranged as shown in the figure, these directional expressions are appropriate, but when the positions of the various components in the figure change, these directional expressions also change accordingly.

[0030] Herein, the expression “include” or similar expressions “including” and “having” and the like are open-ended and do not exclude additional unlisted elements or functions.

[0031] In this document, unless otherwise specifically defined, the terms "coupled", "installed", "connected", "attached" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this document can be understood according to the specific circumstances.

[0032] Herein, the terms "first", "second", etc. are not used to limit the order of precedence or quantity unless otherwise specified.

[0033] It is recognized that traditional circuit breakers cannot provide power-off protection in the event of leakage, and the existing leakage protection devices have limited application scenarios. In order to meet the more diversified needs of consumers, such as the need for products to be suitable for various application scenarios such as high current scenarios, the present disclosure provides a combined leakage protection device that combines the circuit breaker and ground fault protection functions, and provides protection for personal safety and protection for equipment and circuits through a dual protection mechanism, making the leakage protection device safer, more reliable and more widely used.

[0034] Specifically, combined Figures 1A to 3B According to one embodiment, a combined leakage protection device includes a ground fault circuit breaker module 1 and a circuit breaker module 2, wherein the circuit breaker module 2 includes an input terminal 25 and an output terminal 26, wherein the input terminal 25 is configured to be coupled to a power supply, and the output terminal 26 is configured to be coupled to an electrical load. The circuit breaker module 2 has an open state and a closed state and has a circuit breaker assembly that can be operated to connect or disconnect the input terminal 25 and the output terminal 26. In the illustrated embodiment, the circuit breaker assembly may include an operating handle 21 and a circuit breaker tripping rod 23, wherein the operating handle 21 is configured to be able to move between a first position and a second position, and drive the circuit breaker tripping rod 23 to move between the first position and the second position. When the operating handle 21 is placed in its first position, the input terminal 25 and the output terminal 26 are in an open state; moving the operating handle 21 from its first position to its second position will drive the circuit breaker tripping rod 23 to move to its second position, so that the input terminal 25 and the output terminal 26 can be closed and connected. Thereafter, according to the design of the present disclosure, if the circuit breaker tripping rod 23 is operated to be placed in its first position, the input terminal 25 and the output terminal 26 of the circuit breaker module can be disconnected, and at this time, the operating handle 21 is restored to its first position. Even if the operating handle 21 is restricted to its second position due to special reasons, the input terminal 25 and the output terminal 26 can be disconnected; when the circuit breaker tripping rod 23 is placed in its first position, even if the operating handle 21 is moved from its first position to its second position, the input terminal 25 and the output terminal 26 cannot be closed and connected, which will be described in detail below.

[0035] Advantageously, when the input terminal 25 and the output terminal 26 are in a connected state or a closed state, the ground fault circuit breaker module 1 can drive the circuit breaker tripping rod 23 to place the circuit breaker tripping rod 23 in its first position to disconnect the input terminal 25 and the output terminal 26, which will be described in detail below. In addition, the circuit breaker module 2 also includes at least one mounting unit 22, which is suitable for mounting and fixing the circuit breaker module 2 to a desired position or component. The mounting unit 22 includes but is not limited to screws, bolts, rails, etc., such as the panel bolts shown in the figure.

[0036] Depending on different needs, the combined leakage protection device according to the present disclosure may include at least one circuit breaker module 2. Figures 1A to 3B In the embodiment shown, the one-pole circuit breaker module 2 and the ground fault circuit breaker module 1 can be connected and relatively fixed by a fixing device 3, for example Figure 2A and Figure 2B The fixing device 3 includes, for example but not limited to, rivets, screws, buckles, connecting pieces or fixing blocks and other components suitable for fixing. Fig. 10A The leakage protection device composed of a two-pole circuit breaker module 2 and a ground fault circuit breaker module 1 is shown as an example. Fig. 10B The leakage protection device is exemplarily shown as a combination of a three-pole circuit breaker module 2 and a ground fault circuit breaker module 1. It should be understood that the number of circuit breaker modules is not limited here.

[0037] FIG. 6A to FIG. 6C The invention shows a ground fault circuit breaker module 1 and its main components in an embodiment. The ground fault circuit breaker module 1 is used to detect a ground fault at the output end. When a ground fault is detected, the circuit breaker tripping rod 23 of the circuit breaker module 2 can be driven to operate so that the power connection between the input end 25 and the output end 26 is disconnected.

[0038] See also Figure 6B and Figure 6CThe ground fault circuit breaker module 1 includes a housing, a ground fault signal processing unit 111 arranged in the housing, a driving component 106 coupled to the ground fault signal processing unit 111, and a locking device 101. The driving component 106 has a first position and a second position in response to the control of the ground fault signal processing unit 111. The locking device 101 can be attached to the circuit breaker module 2 and has a locking state and an unlocking state, and the locking device 101 can be linked with the driving component 106 to switch between the locking state and the unlocking state. Advantageously, the ground fault circuit breaker module 1 also includes an auxiliary switch 107 coupled to the ground fault signal processing unit 111, and the auxiliary switch 107 can be linked with the locking device 101 to be in an open state or a closed state. The driving component 106 includes a coil component 106a and an actuator 106b, and the actuator 106b is used to drive the locking device 101 to put the locking device 101 in an unlocking state. Advantageously, the actuator 106b is also used to drive the circuit breaker module 2 to put the circuit breaker module 2 in an off state. The coil assembly 106a is attached to the actuator 106b, and controls the actuator 106b to move in response to the ground fault signal processing unit 111.

[0039] Specifically, combined Fig. 7A As shown, the actuator 106b is provided with two legs 106b1 and 106b2, wherein the leg 106b2 is suitable for driving the circuit breaker tripping rod 23 so that the input end and the output end on the circuit breaker module are switched from the closed state to the open state, and the leg 106b1 is suitable for driving the locking device 101 to put it in the unlocked state, thereby disconnecting the auxiliary switch 107. The ground fault signal processing unit 111, for example, at least includes a control circuit board 111a and a ground fault signal detection unit 112, and the ground fault signal detection unit 112 includes at least one detection magnetic ring for detecting the ground fault signal in the output circuit passing through the detection magnetic ring. When the ground fault signal detection unit 112 detects the ground fault signal, the control circuit board 111a can control the coil assembly 106a to act, thereby driving the actuator 106b to act and drive the circuit breaker tripping rod 23 of the circuit breaker assembly to move to its first position, so that the input end and the output end are disconnected. Advantageously, the locking device 101 and the auxiliary switch 107 are configured to be linked so that the auxiliary switch 107 is in a closed state before the input terminal 25 and the output terminal 26 are connected.

[0040] In this way, the combined leakage protection device of the present disclosure can realize reliable and safe connection or disconnection between the input terminal 25 and the output terminal 26 through the coordinated action of the locking device 101, the driving component 106 and the auxiliary switch 107. Specifically, when the input terminal 25 and the output terminal 26 need to be connected and the operating handle 21 is moved from its first position to its second position, the locking device 101 can drive the auxiliary switch 107 to be in a closed state first. At this time, if the ground fault signal detection unit 112 detects a ground fault signal, or the ground fault circuit breaker module 1 is in a fault alarm state, the control circuit board 111a can directly control the coil component 106a to operate, and then drive the actuator 106b to place the circuit breaker trip rod 23 in its first position. At this time, even if the operating handle 21 continues to be moved to its second position, the input terminal 25 and the output terminal 26 cannot be connected, thereby avoiding the occurrence of dangerous situations caused by misoperation. In particular, in certain embodiments, for example, when the movement of the operating handle 21 from the second position to the first position is limited, if the ground fault signal detection unit 112 detects a ground fault signal, the ground fault circuit breaker module 1 can still control the actuator 106b to act, thereby driving the circuit breaker tripping rod 23 to disconnect the input end 25 and the output end 26 of the circuit breaker module 2, and at the same time put the locking device 101 in an unlocked state, thereby disconnecting the auxiliary switch 107. This avoids the problem of being unable to disconnect the power due to the obstruction of the operating handle 21, and improves the stability and reliability of the leakage protection device.

[0041] In the illustrated embodiment, the housing of the ground fault circuit breaker module 1 includes at least an upper cover 105 and a base 116, which may be attached by rivets 103, 104 or similar components, for example. An annular cavity may be provided at one end of the housing to accommodate the ground fault signal detection unit 112. The middle portion of the housing is provided as a cavity to accommodate movement components such as the ground fault signal processing unit 111, the drive assembly 106, the actuator 106b and the auxiliary switch 107. The housing is also provided with a through hole, which is concentric with the inner hole of the detection magnetic ring of the ground fault signal detection unit 112. In the illustrated embodiment, the housing may also include a cover plate 102, which is snapped onto the upper cover 105 and combined with the upper cover 105 to form a housing space, which accommodates at least a portion of the drive assembly 106 or the locking device 101. In certain embodiments, an opening may be provided in the middle portion of the cover plate 102 to allow the ground fault circuit breaker module 1 to be attached and linked to the circuit breaker module 2, such as Figure 3B , FIG. 6A to FIG. 6C shown.

[0042] Combination Figure 7CAs shown, the coil assembly 106a of the drive assembly 106 includes an iron core 106a1, an iron core spring 106a2 and a coil winding 106a3. The coil winding 106a3 can generate a magnetic field in a power-on state and remove the magnetic field in a power-off state in response to the control of the ground fault signal processing unit 111. The iron core 106a1 passes through the coil winding 106a3 and one end can be attached to the actuator 106b, and the other end abuts the iron core spring 106a2. The iron core 106a1 reciprocates in the center hole 106a31 of the coil winding 106a3 under the action of the magnetic force of the coil magnetic field and the elastic force of the iron core spring 106a2 in response to the power-on state or the power-off state of the coil winding 106a3, thereby driving the actuator 106b to move. Specifically, the coil winding 106a3 is coupled to the ground fault signal processing unit 111 and is provided with a center hole 106a31 for the iron core 106a1 to be inserted. In addition, an iron core groove 106a11 is provided at the end of the iron core 106a1, and a U-shaped groove 116b4 is correspondingly provided at one end of the actuator 106b. Fig. 7A ) to engage with the core groove 106a11. In this way, when the coil winding 106a3 is energized, a magnetic field will be generated to drive the core 106a1 to move into the center hole 106a31, thereby driving the actuator 106b to move along with it. Conversely, when the coil winding 106a3 is de-energized and the magnetic field disappears, the core 106a1 and the actuator 106b return to the initial position under the action of the rebound force of the core spring 106a2. Advantageously, the actuator 106b is provided with a pivot hole 106b3, which is attached to the housing so that the actuator 106b can pivot, and the actuator 106b is configured to pivot around its pivot hole 106b3 with the movement of the core 106a1.

[0043] In some embodiments, the ground fault circuit breaker module 1 further includes a fault reset unit 110, Figure 6B and Figure 6C As shown, the fault reset unit 110 includes an electronic component that can be coupled to the ground fault signal processing unit 111 and a reset button 110a. The surface of the shell is provided with at least one reset hole, and the reset hole is used to allow part of the reset button 110a to pass through the shell.

[0044] In some embodiments, the ground fault circuit breaker module 1 further includes a ground fault signal simulation unit 109, which is combined with Figure 6B and Figure 6C As shown, the ground fault signal simulation unit 109 may include an electronic component that can be coupled to the ground fault signal processing unit 111 and a test button 109a to simulate a leakage current to generate a ground fault signal. At least one test hole is provided on the surface of the housing, and the test hole is used to allow part of the test button 109a to pass through the housing.

[0045] In some embodiments, the ground fault circuit breaker module 1 further includes a display unit 115, in combination with Figure 6B and Figure 6C As shown, at least one display hole is provided on the surface of the housing, and the display hole is used to allow the display signal of the display unit to pass through the housing. For example, the display unit 115 may include a panel 115a attached to the housing (such as a base 116) and a status indicator light 115c and a light guide column 115b coupled to the ground fault signal processing unit 111, and an alarm display is provided when a ground fault occurs through intuitive observation of the status indicator light 115c through a display window provided on the panel 115a. When the fault is cleared, the alarm display can be cleared by pressing the reset button 110a. In some embodiments, the display unit 115 may also include a light guide column 115b provided between the panel 115a and the status indicator light 115c. Advantageously, the fault reset unit 110 is configured such that when the input terminal and the output terminal are in a disconnected state due to a ground fault or a simulated ground fault and the display unit 115 is in an alarm display state, and moving the operating handle 21 to its second position again still cannot connect the input terminal with the output terminal, it is necessary to operate the reset button 110a after the ground fault is eliminated, release the fault alarm state of the ground fault circuit breaker module, and then move the operating handle 21 to its second position again, so that the input terminal and the output terminal are in a connected state or a closed state again.

[0046] The ground fault interrupter module 1 further comprises a power input unit 108, for example Figure 6C The wires 108a and 108b shown are used to provide power to the ground fault signal processing unit 111. Depending on different needs, the power input unit may also be a connecting piece or a connecting terminal.

[0047] Similarly, the ground fault interrupter module 1 further comprises at least one mounting unit, such as Figure 6C The mounting units 113 and 114 are exemplarily shown in the figure, so as to be suitable for mounting the ground fault circuit breaker module 1 to a desired position or component. Similarly, the mounting units include but are not limited to screws, bolts, guide rails, etc.

[0048] Combination FIG. 4A to FIG. 7BIn the illustrated embodiment, the locking device 101 includes a drive plate assembly 101a and a locking rod 101b attached to the operating handle 21. When the locking device 101 is in the locking state, during the movement of the operating handle 21 between the first position and the second position, the locking device 101 is driven to close or open the auxiliary switch 107. Specifically, when the locking device 101 is in the locking state and the circuit breaker module 2 is in the closed state, the auxiliary switch 107 is in the closed state, and the locking device 101 can be driven by the actuator 106b to be in the unlocked state at any time during the driving process, wherein the auxiliary switch 107 is configured to be in the closed state before the input end and the output end are connected.

[0049] In certain embodiments, FIG. 4B to FIG. 7B As shown, the locking device 101 includes a driving plate assembly and a locking rod 101b attached to the operating handle 21, wherein the locking rod 101b abuts against the auxiliary switch 107 to close the auxiliary switch. The driving plate assembly at least includes a driving plate 101a2 and a locking plate 101a3 pivotally connected to the driving plate 101a2. The driving plate 101a2 can be linked with the circuit breaker module to have a first position and a second position, and the locking plate 101a3 is attached to the driving plate 101a2 and can move relative to the driving plate 101a2 and has a first position and a second position. The driving assembly is used to drive the locking plate 101a3 to move from the first position to the second position. When the locking plate 101a3 is in a first position relative to the driving plate 101a2, the driving plate assembly and the locking rod 101b are in a locked state, and the driving plate assembly can drive the locking rod 101b to move; when the locking plate 101a3 is in a second position relative to the driving plate 101a2, the driving plate assembly and the locking rod 101b are in an unlocked state, and the locking rod 101b moves independently relative to the driving plate assembly.

[0050] In some embodiments, the drive plate assembly further comprises an elastic member disposed between the drive plate 101a2 and the locking plate 101a3 to return the locking plate 101a3 from its second position to its first position. Preferably, the elastic member is in the form of a torsion spring 101a1, for example Figure 5A and Figure 5BAs shown, the torsion spring 101a1 may be provided with an elastic winding and a first torsion spring leg and a second torsion spring leg. The driving plate 101a2 may be provided with a torsion spring hole buckle and a torsion spring leg buckle, the elastic winding of the torsion spring 101a1 may be snapped onto the torsion spring hole buckle of the driving plate 101a2, and the first torsion spring leg is snapped and fixed with the torsion spring leg buckle on the driving plate 101a2. Correspondingly, the locking plate 101a3 may be provided with a snapping end face, which abuts against the second torsion spring leg of the torsion spring 101a1. Under the elastic force of the torsion spring 101a1, the driving plate 101a2 and the locking plate 101a3 enable the locking plate 101a3 to be relatively fixed to the driving plate 101a2 while driving the locking rod 101b to move through, for example, a pivoting motion.

[0051] The drive plate 101a2 can be attached to the operating handle 21 by an appropriate means. FIG. 4A to FIG. 5B In the illustrated embodiment, the operating handle 21 may be provided with a half-moon hole 21a, and the main body of the driving plate 101a2 may be constructed as a fan-shaped panel, and a corresponding half-moon cross-section protrusion 101a22 is provided on one side of the fan-shaped panel so as to be embedded in the half-moon hole 21a to achieve fixation with the operating handle 21 and then with the circuit breaker module 2, so that the driving plate 101a2 can move together with the operation of the operating handle 21. Figure 5A and Figure 5B As shown, the locking plate 101a3 can be pivotally attached to the driving plate 101a2, and the pivotal connection between the driving plate 101a2 and the locking plate 101a3 can be achieved by setting a pivot hole 101a21 on the fan-shaped panel of the driving plate 101a2, and one end of the locking plate 101a3 is provided with a corresponding pivot 101a33 which is inserted into the pivot hole 101a21 so as to be able to pivot relative to the driving plate 101a2, wherein the torsion spring 101a1 can be sleeved on the pivot 101a33. In certain embodiments, a limit groove 101a23 may be provided on the fan-shaped panel of the driving plate 101a2, and a limit column 101a31 may be provided on the locking plate 101a3. When the locking plate 101a3 pivots relative to the driving plate 101a2, the limit column 101a31 is suitable for moving along the limit groove 101a23 to limit the limit column 101a31 and further limit the movement range of the locking plate 101a3 on the driving plate 101a2. In some embodiments, the side wall of the limit groove 101a23 is also provided with a limit block 101a24, and the limit column 101a31 may be provided with a limit hook 101a32. Under the action of the torsion spring force, the limit hook 101a32 can be hung in the limit block 101a24 correspondingly provided in the limit groove 101a23 to limit the separation of the locking plate 101a3 and the driving plate 101a2, so that the locking plate 101a3 will not fall off the driving plate 101a2.

[0052] The matching relationship between the locking plate 101a3 and the locking rod 101b can be achieved by any appropriate method, so that the locking plate 101a3 can pivot and drive the locking rod 101b to move. FIG. 6B to FIG. 7B As shown, the lock rod 101b may be provided with a lock slot 101b2, and the lock plate 101a3 may be provided with a lock protrusion 101a35 suitable for being embedded in the lock slot 101b2 and being in a locked state with the lock rod 101b or being separated from the lock slot 101b2 and being in an unlocked state with the lock rod 101b. When in the locked state, as shown in FIG. Fig. 8A As shown, the locking plate 101a3 and the locking rod 101b can move synchronously, that is, the pivoting movement of the locking plate 101a3 drives the locking rod 101b to move synchronously. In this way, when the operating handle 21 of the circuit breaker module 2 moves (for example, pivots), the driving plate 101a2, the locking plate 101a3 and the locking rod 101b can be driven to move synchronously (for example, pivot), so that the auxiliary switch 107 is closed. In other words, the operating handle 21 of the circuit breaker module 2 can drive the locking device 101 to close the auxiliary switch 107.

[0053] As described above, the housing of the ground fault circuit breaker module 1 may include a cover plate 102 attached to an upper cover 105, and the locking rod 101b may be attached to the housing through a pivot hole 101b3, for example, positioned on a positioning column between the cover plate 102 and the upper cover 105 and capable of pivoting relative to the housing, wherein the positioning column may be formed on the cover plate 102 or the upper cover 105.

[0054] For the auxiliary switch 107, depending on different needs, it can be in the form of a contact arm including but not limited to a contact to achieve on and off. FIG. 6B to FIG. 7B and Fig. 8A In the illustrated embodiment, the auxiliary switch 107 may include a movable contact arm 107a and a stationary contact arm 107b, each of which is provided with a contact. The lock rod 101b of the lock device 101 may be provided with a driving column 101b1 capable of abutting against the movable contact arm 107a. When the lock rod 101b is driven to pivot, the driving column 101b1 may apply force to the elastic driving arm 107a1 of the movable contact arm 107a, thereby driving the movable contact arm 107a to contact the stationary contact arm 107b, so that the auxiliary switch 107 is closed. When the lock device 101 is in an unlocked state, the auxiliary switch 107 is in an open state, that is, after the lock rod 101b is unlocked, the lock rod 101b pivots in the opposite direction under the action of the rebound force of the elastic driving arm 107a1 of the movable contact arm 107a, and the movable contact arm 107a is separated from the stationary contact arm 107b, so that the auxiliary switch 107 is opened.

[0055] Depending on different needs, the actuator 106b can be constructed in any form that can drive the circuit breaker tripping rod 23 to achieve disconnection between the input end and the output end. As described above, the actuator 106b is configured to pivot around the pivot with the movement of the iron core 106a1. In some embodiments, the actuator 106b can be positioned on the positioning column between the cover plate 102 and the upper cover 105 through the pivot hole 106b3 and can pivot relative to the housing driven by the iron core, wherein the positioning column can be formed on the cover plate 102 or the upper cover 105.

[0056] exist Fig. 7A In the embodiment shown, as described above, the actuator 106b is provided with a supporting leg suitable for abutting against the locking device and a supporting leg suitable for abutting against the circuit breaker assembly in addition to the annular groove 106b4 that is engaged with the core groove 106a11 of the core 106a1. Figure 5B , Fig. 7A The actuator 106b is provided with a support leg 106b1 suitable for abutting against the locking plate 101a3, and the locking plate 101a3 is correspondingly provided with a contact surface 101a34. The actuator 106b is also provided with a support leg 116b2 suitable for abutting against the circuit breaker tripping rod 23.

[0057] The following combination 8A to 9C The operation process of the combined leakage protection device disclosed in the present invention and the protection functions that can be achieved are summarized.

[0058] See first Fig. 8A , showing that the operating handle 21 is in the first position, and the input and output ends are in the disconnected state. When the operating handle 21 moves (rotates) from the first position to the second position along the arrow direction to cause the driving plate 101a2 to pivot and then drive the locking plate 101a3 to rotate, the contact surface 101a34 of the locking plate 101a3 approaches the support leg 106b1 of the actuator 106b, and the locking plate 101a3 and the locking rod 101b are in a locked state and drive the locking rod 101b to rotate, and then the elastic driving arm 107a1 of the moving contact arm 107a is forced through the driving column 101b1 to close the auxiliary switch 107. Figure 8B As shown, at this time, the input end and the output end of the circuit breaker module 2 are not yet connected.

[0059] exist Figure 8B There are two situations in the state shown. Situation 1: If the ground fault signal processing unit 111 does not detect the ground fault signal or the simulated ground fault signal, when the operating handle 21 is successfully placed in its second position, the circuit breaker tripping rod 23 is driven to its second position at the same time, and the input and output ends of the circuit breaker module are successfully connected. Figure 8CCase 2: If the ground fault signal processing unit 111 has detected the ground fault signal and sent an action signal, when the auxiliary switch 107 is closed, the coil winding 106a3 is energized and generates a magnetic field to drive the iron core 106a1 to drive the actuator 106b to rotate synchronously, until the leg 106b2 of the actuator 106b abuts against the circuit breaker tripping rod 23 and drives the circuit breaker tripping rod 23 to move to its first position, preventing the input end and the output end of the circuit breaker module 2 from being connected, and even if the operating handle 21 is moved to its second position, the input end and the output end cannot be connected. At the same time, when the actuator 106b rotates, the supporting leg 116b1 contacts and collides with the contact surface 101a34 of the lock plate 101a3, driving the lock plate 101a3 to rotate and disengage from the lock slot 101b2 of the lock rod 101b and to be in an unlocked state with the lock rod 101b. The lock rod 101b rotates and moves back to the initial position under the rebound force of the elastic driving arm 107a1. At the same time, under the rebound force of the elastic driving arm 107a1, the moving contact arm 107a and the static contact arm 107b will separate, so that the auxiliary switch 107 is disconnected. Fig. 9C shown.

[0060] like Fig.9A As shown, when the operating handle of the circuit breaker module 2 is placed in its second position and the input and output ends are normally connected and working, after the ground fault signal detection unit 112 detects the ground fault signal, it will feedback data to the ground fault signal processing unit 111. The ground fault signal processing unit 111 compares the set parameters according to the feedback data. When it is less than the set parameters, it does not control the drive component 106 to act, and when it is greater than the set parameters, it controls the drive component 106 to act. Specifically, the iron core 106a1 of the drive component 106 is driven by the electromagnetic force to drive the actuator 106b to act, and the actuator 106b rotates and drives the circuit breaker trip rod 23 to act through the support leg 106b2, so that the circuit breaker module 2 disconnects the power connection between the output end and the input end. At the same time, when the actuator 106b rotates, the supporting leg 106b1 contacts and collides with the contact surface 101a34 of the locking plate 101a3, driving the locking plate 101a3 to rotate and disengage from the locking slot 101b2 of the locking rod 101b, and the locking rod 101b is in an unlocked state. The locking rod 101b is released from the locking groove 101b2 of the locking rod 101b under the rebound force of the elastic driving arm 107a1. Fig.9A The status shown is Fig. 9B At the same time, under the rebound force of the elastic drive arm 107a1, the moving contact arm 107a and the stationary contact arm 107b will separate, so that the auxiliary switch 107 is disconnected. Fig. 9C shown.

[0061] like Fig.9AAs shown, when the operating handle of the circuit breaker module 2 is placed in its second position and the input and output ends are connected and working normally, when the test button 109a is pressed, the ground fault signal simulation unit 109 simulates and generates a ground fault signal greater than the set parameter, and then feeds back the data to the ground fault signal processing unit 111. The ground fault signal processing unit 111 compares the set parameter according to the feedback data and controls the drive component 106 to operate. Similarly, after the drive component 106 operates, it drives the actuator 106b to operate, and the actuator 106b drives the circuit breaker trip rod 23 to operate, so that the circuit breaker module 2 disconnects the power connection between the output end and the input end. At the same time, the actuator 106b drives the locking plate 101a3 and the locking rod 101b to be in the unlocked state, so that the locking rod 101b is released from the elastic driving arm 107a1 under the rebound force. Fig.9A The status shown is Fig. 9B The state shown rotates back to the initial position, and at the same time, under the rebound force of the elastic drive arm 107a1, the moving contact arm 107a and the static contact arm 107b are separated, so that the auxiliary switch 107 is disconnected. Fig. 9C shown.

[0062] In some cases, when the operating handle 21 is in its second position and cannot move freely due to external reasons. Fig.9A As shown, the operating handle of the circuit breaker module 2 is placed in its second position and the input end and the output end are connected and working normally. Due to some reasons, the operating handle is restricted and cannot be moved from the second position to the first position. When the ground fault signal detection unit detects the ground fault signal or the test button 109a is pressed, the ground fault circuit breaker module 1 can still drive the actuator 106b to operate through the driving component 106, and then drive the circuit breaker tripping rod 23 to be placed in its first position, so that the input end and the output end of the circuit breaker module 2 are disconnected, and at the same time, the auxiliary switch 107 inside the ground fault circuit breaker module 1 is placed in the disconnected state.

[0063] When the circuit breaker module 2 disconnects the power connection between the input and output ends due to the ground fault signal detection unit detecting the ground fault signal or pressing the test button 109a, if the power connection between the input and output ends needs to be reconnected, the ground fault alarm state needs to be cleared by operating the fault reset unit 110 after eliminating the ground fault, and the operating handle 21 of the circuit breaker module 2 can be continued to connect the power connection between the input and output ends. In this way, the leakage protection device disclosed in the present invention can timely cut off the power to protect the safety of people and equipment when a leakage fault occurs, and is suitable for a variety of electrical equipment and can be used in various occasions.

[0064] It should be understood here that the embodiments shown in the figures only show the optional shapes, sizes and arrangements of the various optional components of the combined leakage protection device according to the present disclosure, but they are only for illustration and not limitation. Other shapes, sizes and arrangements may also be adopted without departing from the concept and scope of the present disclosure.

[0065] The technical content and technical features of the present disclosure have been disclosed above. However, it can be understood that under the creative ideas of the present disclosure, technicians in this field can make various changes and improvements to the above disclosed concepts, but they all belong to the protection scope of the present disclosure. The description of the above implementation mode is illustrative rather than restrictive, and the protection scope of the present disclosure is determined by the claims.

Claims

1. A combined leakage protection device, characterized in that: The combined leakage protection device comprises: An input terminal configured to be coupled to a power supply; An output terminal configured to be coupled to an electrical load; A circuit breaker module, having an open state and a closed state, for respectively disconnecting and connecting the power connection between the input end and the output end; The ground fault circuit breaker module comprises a housing, a ground fault signal processing unit arranged inside the housing, a driving component coupled to the ground fault signal processing unit and a locking device. wherein the driving assembly has a first position and a second position in response to control of the ground fault signal processing unit; The locking device is attached to the circuit breaker module and has a locked state and an unlocked state. The locking device can be linked with the drive assembly to switch between the locked state and the unlocked state, wherein the locking device includes a drive plate assembly and a locking rod attached to the circuit breaker module, and the drive plate assembly at least includes a drive plate and a locking plate; the drive plate is attached to the circuit breaker module and is linked with the circuit breaker module to have a first position and a second position; the locking plate is attached to the drive plate and can move relative to the drive plate and has a first position and a second position.

2. A combined leakage protection device according to claim 1, characterized in that: When the locking plate is in a first position relative to the driving plate, the driving plate assembly and the locking rod are in a locking state, and the driving plate assembly can drive the locking rod to move; When the locking plate is in the second position relative to the driving plate, the driving plate assembly and the locking rod are in an unlocked state, and the locking rod moves independently relative to the driving plate assembly.

3. A combined leakage protection device according to claim 1, characterized in that: The driving plate assembly further comprises an elastic member, which is arranged between the driving plate and the locking plate so as to return the locking plate from its second position to its first position.

4. A combined leakage protection device according to claim 3, characterized in that: The elastic member is in the form of a torsion spring, and the torsion spring is provided with an elastic winding and a first torsion spring leg and a second torsion spring leg.

5. A combined leakage protection device according to claim 1, characterized in that: The main body of the driving plate is a fan-shaped panel, and a boss is arranged on one side of the fan-shaped panel. The driving plate is attached to the circuit breaker module through the boss.

6. A combined leakage protection device according to claim 5, characterized in that: A pivot hole and a limiting groove are also arranged on the fan-shaped panel of the driving plate.

7. A combined leakage protection device according to claim 6, characterized in that: The side wall of the limiting groove is also provided with a limiting block.

8. A combined leakage protection device according to claim 4, characterized in that: The drive plate is also provided with a torsion spring hole buckle and a torsion spring foot buckle. The elastic winding of the torsion spring is clamped on the torsion spring hole buckle of the drive plate, and the first torsion spring foot is clamped and fixed to the torsion spring foot buckle on the drive plate.

9. A combined leakage protection device according to claim 8, characterized in that: The locking plate is provided with a clamping end surface, and the clamping end surface abuts against the second torsion spring leg of the torsion spring.

10. A combined leakage protection device according to claim 1, characterized in that: The locking plate is attached to the driving plate, and a pivot is provided at one end of the locking plate so as to be able to pivot relative to the driving plate.

11. A combined leakage protection device according to claim 10, characterized in that: The locking plate is also provided with a limiting column for limiting the movement stroke of the locking plate on the driving plate.

12. A combined leakage protection device according to claim 11, characterized in that: The limiting column is provided with a limiting hook for limiting the separation of the locking plate and the driving plate.

13. A combined leakage protection device according to claim 1, characterized in that: The locking plate is provided with a locking protrusion to drive the locking rod to move.

14. A combined leakage protection device according to claim 1, characterized in that: The driving assembly is used to drive the locking plate to move from a first position to a second position.

15. A combined leakage protection device according to claim 1, characterized in that: The lock lever is provided with a pivot hole, and the pivot hole is attached to the housing to enable the lock lever to pivotally move.

16. A combined leakage protection device according to claim 1, characterized in that: The locking rod is provided with a locking slot so that the driving plate assembly can drive the locking rod to move.

17. A combined leakage protection device according to claim 1, characterized in that: The drive assembly comprises: An actuator, used to drive the locking device to put the locking device into an unlocked state; The coil assembly is attached to the actuator and controls the movement of the actuator in response to the ground fault signal processing unit.

18. A combined leakage protection device according to claim 17, characterized in that: The coil assembly comprises a coil winding, an iron core and an iron core spring.

19. A combined leakage protection device according to claim 17, characterized in that: The actuator is used to drive the circuit breaker module to put the circuit breaker module in an off state.

20. A combined leakage protection device according to claim 17, characterized in that: The actuator is provided with a pivot hole, and the pivot hole is attached to the housing to enable the actuator to pivotally move.

21. A combined leakage protection device according to claim 18, characterized in that: A central hole is provided inside the coil winding, and the central hole is used to accommodate the iron core spring and the iron core.

22. A combined leakage protection device according to claim 21, characterized in that: The coil winding drives the iron core in response to the control of the ground fault signal processing unit, so that the iron core reciprocates in the central hole.

23. A combined leakage protection device according to claim 18, characterized in that: The iron core is provided with an iron core groove, and the iron core groove is attached to the actuator, thereby driving the actuator to move.

24. A combined leakage protection device according to claim 1, characterized in that: The ground fault circuit breaker module further comprises an auxiliary switch coupled to the ground fault signal processing unit, and the auxiliary switch can be linked with the locking device to be in an open state or a closed state.

25. A combined leakage protection device according to claim 24, characterized in that: The auxiliary switch is provided with an elastic driving arm, and the elastic driving arm abuts against the locking device.

26. A combined leakage protection device according to claim 24, characterized in that: When the locking device is in the unlocked state, the auxiliary switch is in the disconnected state.

27. A combined leakage protection device according to claim 24, characterized in that: When the locking device is in the locking state and the circuit breaker module is in the closed state, the auxiliary switch is in the closed state.

28. A combined leakage protection device according to claim 1, characterized in that: The housing of the ground fault circuit breaker module comprises an upper cover and a base; a ground fault signal processing unit and a driving component coupled to the ground fault signal processing unit are arranged in the cavity formed by the upper cover and the base.

29. A combined leakage protection device according to claim 28, characterized in that: The ground fault signal processing unit at least comprises a detection magnetic ring, which is used to detect a ground fault signal in a circuit loop passing through the detection magnetic ring; The shell is also provided with a through hole, and the through hole is concentric with the inner hole of the detection magnetic ring.

30. A combined leakage protection device according to claim 28, characterized in that: The housing further comprises a cover plate, which is clamped on the upper cover and combined with the upper cover to form a housing space, and the housing space at least accommodates a part of the driving assembly or the locking device.

31. A combined leakage protection device according to claim 30, characterized in that: An opening is provided in the middle of the cover plate so that the ground fault circuit breaker module can be attached and linked with the circuit breaker module.

32. A combined leakage protection device according to claim 1, characterized in that: The surface of the housing is provided with at least one testing hole; The ground fault signal processing unit includes a test button; The test hole is used to allow part of the test button to pass through the shell.

33. A combined leakage protection device according to claim 1, characterized in that: The surface of the housing is provided with at least one reset hole; The ground fault signal processing unit includes a reset button; The reset hole is used to allow part of the reset button to pass through the housing.

34. A combined leakage protection device according to claim 1, characterized in that: The surface of the housing is provided with at least one display hole; The ground fault signal processing unit includes a display unit; The display hole is used to allow a display signal of the display unit to pass through the housing.

35. A combined leakage protection device according to claim 1, characterized in that: The circuit breaker module and the ground fault interrupter module are connected and relatively fixed by a fixing device.

36. A combined leakage protection device according to claim 35, characterized in that: The fixing device is selected from at least one of rivets, bolts, and buckles.

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