CN220711106U - Leakage protection device with fault display function - Google Patents

Abstract

The present disclosure provides a leakage protection device with a fault display function, comprising a housing and a core assembly arranged in the housing, wherein the core assembly comprises a control circuit board, an input terminal assembly and an output terminal assembly which are coupled to the control circuit board, and a reset assembly and a tripping assembly; the movement assembly comprises an auxiliary switch which is coupled to the control circuit board and driven by the tripping assembly to be separated from or contacted with the input terminal assembly so as to be in an off state or an on state; the movement assembly includes a status indicator coupled to the control circuit board and providing a first indication in response to an off state or providing a second indication in response to an on state. The utility model discloses a when guaranteeing earth leakage protection device reliability, utilize reasonable structural design and overall arrangement to realize the fault display function in less space, the product can provide instruction or warning to the user based on operating condition and fault state, promotes the safety in utilization.

Description

Leakage protection device with fault display function

Technical Field

The present disclosure relates generally to the field of earth leakage protection devices, and more particularly, to an earth leakage protection device with fault display.

Background

With the progress of technology and the improvement of safety consciousness of people, the application scene of the electric leakage protection device is wider and wider. The existing leakage protection device generally does not have a state indication function, or only provides an indication lamp for displaying a normal working state, so that a user cannot intuitively sense the leakage fault in the power utilization line, and inconvenience is brought to use.

With the increasing demands of reliability and functionality of earth leakage protection devices, there is a need in the market for a product that can provide visual functions for operating conditions and fault conditions.

Disclosure of Invention

Based on the above-mentioned demand, the present disclosure proposes a earth leakage protection device with fault display function, provides different state instructions based on operating condition and fault state, and convenient to use person uses, promotes experience comfort level and security.

To this end, according to the present disclosure, there is provided a leakage protection device having a fault display function, including a housing and a core assembly disposed within the housing, the core assembly including a control circuit board, an input terminal assembly and an output terminal assembly coupled to the control circuit board, and a reset assembly and a trip assembly; wherein the movement assembly includes an auxiliary switch coupled to the control circuit board and driven by the trip assembly to be separated from or contacted with the input terminal assembly to be in an off state or an on state; and the movement assembly includes a status indicator coupled to the control circuit board and providing a first indication in response to the off state or providing a second indication in response to the on state.

The present disclosure may further include any one or more of the following optional forms according to the above technical idea.

In some alternatives, the trip assembly includes a trip unit disposed below the auxiliary switch and provided with a push rod through which a lifting force is applied to the auxiliary switch to place the auxiliary switch in the off state or to release the lifting force to place the auxiliary switch in the on state.

In some alternatives, the auxiliary switch is configured as a spring tab having one end coupled to the control circuit board and the other end being a spring arm to disengage or contact the input terminal assembly.

In some alternative forms, the input terminal assembly is a live or neutral input terminal assembly provided with contact arms that mate with the resilient arms of the auxiliary switch.

In some alternative forms, the status indicator includes an operating status indicator light capable of displaying a first color to provide the first indication and a fault status indicator light capable of displaying a second color to provide the second indication.

In some alternatives, the reset assembly includes a reset lever and a reset button attached to the reset lever, the reset lever being of transparent material and abutting the status indicator, the reset button being exposed outside the housing and provided with an indicator aperture.

In some alternatives, the housing includes an upper cover and a base on which the movement assembly is disposed, the housing further including first and second rear covers attached to both ends of the base, respectively, the input and output terminal assemblies being located between the first and second rear covers and the upper cover, respectively, to form an input and an output.

In some alternatives, the housing is provided with seals at least at the input end and the output end.

According to the leakage protection device, the auxiliary switch and the state indicating piece are integrated in the leakage protection device, the reliability of the leakage protection device is guaranteed, meanwhile, the fault display function is achieved in a small space through reasonable structural design and layout, and the product can provide indication or warning for a user based on the working state and the fault state, so that the use safety is improved. In addition, the leakage protection device disclosed by the utility model has the advantages of simple structure, low cost, convenience in implementation and reliable performance, and is widely applicable to various application occasions.

Drawings

Other features and advantages of the present disclosure will be better understood from the following detailed description of alternative embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a leakage protection device according to one embodiment of the present disclosure;

FIG. 2 is an exploded view of the leakage protection device of FIG. 1;

FIG. 3 is a partial schematic view of the earth leakage protection device of FIG. 1, illustrating a status indicator of one embodiment;

FIG. 4 is a partial schematic view of the leakage protection device of FIG. 1, illustrating an auxiliary switch of an embodiment;

FIG. 5 is a schematic diagram of a trip unit of one embodiment of the leakage protection device of FIG. 2;

FIG. 6 is a schematic diagram of an input terminal of one embodiment of the leakage protection device of FIG. 2 adapted to mate with an auxiliary switch;

FIG. 7 is a schematic diagram of an auxiliary switch of one embodiment of the leakage protection device of FIG. 2;

FIG. 8 is a schematic cross-sectional view of the auxiliary switch in the earth leakage protection device in an on state;

fig. 9 is a schematic cross-sectional view of the auxiliary switch in the leakage protection device in an off state.

Detailed Description

The making and using of the embodiments are discussed in detail below. It should be understood, however, that the specific embodiments discussed are merely illustrative of specific ways to make and use the disclosure, and do not limit the scope of the disclosure. The structural position of the various components as described, such as the directions of up, down, top, bottom, etc., is not absolute, but rather relative. When the individual components are arranged as shown in the figures, these directional expressions are appropriate, but when the position of the individual components in the figures changes, these directional expressions also change accordingly.

The terms "comprising," "including," and "having," and the like, herein, are open ended and do not exclude additional unrecited elements, steps, or components.

Herein, unless specifically limited otherwise, terms such as "coupled," "mounted," "connected," "attached," and the like are to be construed broadly and may be fixedly connected, detachably connected, or integrally formed, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms herein above will be understood by those skilled in the art as the case may be.

It has been recognized that existing earth leakage protection devices do not have a status indication function, or only have an indicator light that shows an operating status, that is, in a normal operating status, the indicator light shows a red or green light, and when the earth leakage protection device trips in an electrical line, the indicator light is not lit. This presents inconvenience to the user during use and also increases the risk of electricity consumption to some extent.

According to the conception of the present disclosure, a leakage protection device with a fault display function is provided, and a state indication is provided in a normal working state, and once a product is tripped due to a leakage fault in a power line, another state indication, namely a fault state display, can be provided on the surface of the product.

Referring to fig. 1 and 2, the earth leakage protection device includes a housing and a movement assembly disposed in the housing, and in the illustrated embodiment, the housing includes an upper cover 1 and a base 2, and the movement assembly is disposed on the base 2. The movement assembly comprises, for example, a control circuit board 9 and an input terminal assembly, in particular a live input terminal 19, a neutral input terminal 20, a ground input terminal 21 as illustrated in fig. 2, and an output terminal assembly, in particular a live output terminal 22, a neutral output terminal 23, a ground output terminal 24 as illustrated, coupled to the control circuit board 9. In the illustrated embodiment, the housing further includes first and second rear covers 3a and 3b attached to both ends of the base 2, respectively, and input and output terminal assemblies are located between the first and second rear covers 3a and 3b and the upper cover 1, respectively, to form input and output terminals. That is, the input and output ends are located at the left and right ends of the housing, respectively, in the orientation shown in fig. 2. In this way, the disclosed earth leakage protection device facilitates coupling into a power line as needed to meet earth leakage protection requirements of different applications.

The electrical connection between the input and output is for example achieved by means of a dynamic and static contact plate. For example, in the embodiment shown in fig. 2, the movement assembly includes a magnet ring assembly 16 with a live wire input terminal 19 in contact with and spaced from a live wire movable contact 25 to be turned on and off, and is connected to a live wire output terminal 22 by a live wire conductive tab 1601 on the magnet ring assembly 16, thereby completing the live wire end connection. Similarly, neutral input terminal 20 may also be connected to neutral output terminal 23 by a similar structure. Or alternatively, in the embodiment shown in fig. 2, a neutral input connection piece 27 is provided, one end of the neutral input connection piece 27 is soldered to the control circuit board 9, and the other end of the neutral input connection piece 27 is correspondingly contacted or separated from the neutral movable contact piece 26 to be connected or disconnected, and is connected to the neutral output connection terminal 23 through a neutral conductive piece 1602 on the magnetic ring assembly 16, thereby completing the connection of the neutral ends. Ground input terminal 21 is optionally connected directly to ground output terminal 24 via ground line 29.

According to the present disclosure, a movement assembly includes a reset assembly and a trip assembly to switch an input and an output between a closed state and an open state. In certain embodiments, the earth leakage protection device further comprises a test component. As in the embodiment shown in fig. 2, the reset assembly includes, for example, a reset lever 10 and a reset button 6 attached to the reset lever 10, and a reset spring 11. The trip assembly includes, for example, a trip unit 12, a trip core 13, a trip spring 14, and a coil bracket 15. The test assembly comprises, for example, a test button 7. Accordingly, the upper cover 1 is provided with a reset button guide hole 101 and a test button guide hole 102 through which the reset button 6 and the test button 7 are exposed to protrude for easy operation. Thus, by operating the reset button 6, the reset assembly and the trip assembly can cooperatively operate to enable the input end and the output end to be in a closed state, and the leakage protection device works normally. When an electric leakage fault occurs or the test button 7 is operated, the tripping component implements a tripping function to enable the input end and the output end to be in a disconnected state, so that an electric leakage protection function is realized, and electric shock accidents are effectively avoided. It should be understood that the reset component and trip component for implementing the reset trip function of the leakage protection device and the test component for implementing the test function may take any suitable form in the art, and the illustrations are merely examples and are not repeated herein.

According to the present disclosure, the movement assembly includes an auxiliary switch 28, which auxiliary switch 28 is coupled to the control circuit board 9 and is driven by the trip assembly to be separated from or in contact with the input terminal assembly to be in an off state or an on state. The movement assembly further comprises a status indicator coupled to the control circuit board 9 and providing a first indication in response to the off state or a second indication in response to the on state. In some embodiments, the status indicators include an operating status indicator light 901 capable of displaying a first color (e.g., green) to provide the first indication, and a fault status indicator light 902 capable of displaying a second color (e.g., red) to provide the second indication. In the embodiment shown in fig. 2, the operating status indicator lamp 901 and the fault status indicator lamp 902 are directly coupled to the control circuit board 9.

In some embodiments, the reset lever 10 of the reset assembly is transparent and abuts the status indicator, wherein, in conjunction with fig. 1-3, the reset button 6 is exposed outside the housing and provided with an indicator aperture 601. In the illustrated embodiment, the working status indicator lamp 901 and the fault status indicator lamp 902 may be disposed on two sides of the reset lever 10, respectively, although other suitable arrangements may be adopted. When the product works normally, the working state indicator 901 is on, and the transparent reset rod 10 guides out the light of one color to the indicating hole 601 on the reset button 6 to indicate the product to work normally. When a fault occurs, the fault state indicator lamp 902 is on, the working state indicator lamp 901 is off, and the transparent reset rod 10 guides out light rays of the other color to the indication hole 601, so that a warning effect is achieved.

Referring to fig. 2 and 7, in some embodiments, the auxiliary switch 28 is configured as a spring piece having one end 2802 coupled to the control circuit board 9 and the other end having a spring arm 2801 to be separated from or in contact with the input terminal assembly. In connection with fig. 2 and 5, in the embodiment shown, the trip 12 is arranged below the auxiliary switch 28 and provided with a push rod 1201, which push rod 1201 is able to apply a lifting force to the auxiliary switch 28 (in particular the resilient arm 2801) to put the auxiliary switch 28 in an off-state, or to release the lifting force to put the auxiliary switch 28 in an on-state.

Referring to fig. 2 and 6, the input terminal assembly for contacting or separating from the spring arm 2801 of the auxiliary switch 28 may be a live input terminal assembly or a neutral input terminal assembly, in the illustrated embodiment, live input terminal 19, with contact arm 1901 engaging spring arm 2801.

Referring to fig. 4, 8 and 9, during a reset operation, the trip unit 12 moves upward and applies a lifting force to the elastic arm 2801 through the ejector 1201, so that the elastic arm 2801 and the contact arm 1901 are separated from each other and are in a disconnected state, as shown in fig. 9, and at this time, the operating state indicator 901 is turned on, indicating a normal operating state. When a leakage fault occurs in the power line to cause tripping, the trip unit 12 moves downward and causes the ejector 1201 to release the lifting force applied to the resilient arm 2801, so that the resilient arm 2801 and the contact arm 1901 are in contact with each other in an on state, as shown in fig. 8. Since one end 2802 of the auxiliary switch 28 is soldered to the control circuit board, i.e. soldered into the fault indication circuit on the control circuit board, the fault indication circuit forms a loop, the fault status indicator 902 is on, and the user visually observes the color change of the indicator from the outside of the product through the indicator hole 601, for example, from green to red, thereby playing a role in warning.

When the leakage fault in the power line is removed, the reset button 6 is pressed to enable the release 12 to move upwards, the ejector rod 1201 applies a lifting force to the elastic arm 2801 again, so that the elastic arm 2801 and the contact arm 1901 are separated from each other and are in a disconnected state, the fault state indicator 902 is turned off, and the working state indicator 901 is connected to the load end of the product.

In some embodiments, the housing is provided with seals at least at the input end and the output end. In particular to the embodiment shown in fig. 2, the input and output ends may be provided with sealing rings 4 and sealing plugs 5, respectively. Optionally, a button waterproof cap 8 may be provided between the reset button 6 and the test button 7 and the control circuit board 9. Optionally, a waterproof ring 30 may be provided between the upper cover 1 and the base 2 and the first and second rear covers 3a, 3 b.

When the assembly is carried out, the input terminal assembly, the output terminal assembly, the reset assembly, the tripping assembly and the magnetic ring assembly 16 are respectively arranged in the base 2, and the hole site on the control circuit board 9 is aligned with a part pin in the base 2 to be sleeved in and electrically welded, so that the movement assembly is formed. After that, the button waterproof cap 8 is put on top of the reset lever 10, and the reset button 6 and the test button 7 are assembled, and the waterproof ring 30 is put on. Then, the upper cover 1 is sleeved in and fixed with the base 2 by the screw 31, and the first rear cover 3a and the second rear cover 3b are fixed with the upper cover 1 by the rear cover screw 32. Finally, the sealing rings 4 and the sealing plugs 5 are plugged into the two ends of the upper cover 1, so that the assembly of the product can be completed.

When the wiring is needed, the first rear cover 3a and the second rear cover 3b can be detached, the input and output power lines penetrate into two ends of the shell respectively and are connected to the input wiring terminal assembly and the output wiring terminal assembly, then the sealing ring 4 and the sealing plug 5 are plugged in, the wire pressing block 17 is screwed down by the wire pressing screw 18 to press the power lines, and finally the first rear cover 3a, the second rear cover 3b and the upper cover 1 are fixed, so that the wiring of the product can be finished.

It should be understood herein that the embodiments shown in the drawings only show alternative shapes, sizes and arrangements of the various optional components of the earth leakage protection device according to the present disclosure, however, they are merely illustrative and not limiting, and that other shapes, sizes and arrangements may be adopted without departing from the spirit and scope of the present disclosure.

While the technical contents and features of the present disclosure have been disclosed above, it will be understood that those skilled in the art may make various changes and modifications to the above disclosed concept under the inventive concept of the present disclosure, but all fall within the scope of the present disclosure. The above description of embodiments is illustrative and not restrictive, and the scope of the disclosure is defined by the claims.

Claims (8)

1. The electric leakage protection device with the fault display function comprises a shell and a core assembly arranged in the shell, and is characterized in that the core assembly comprises a control circuit board, an input terminal assembly and an output terminal assembly which are coupled with the control circuit board, and a reset assembly and a tripping assembly;

wherein the movement assembly includes an auxiliary switch coupled to the control circuit board and driven by the trip assembly to be separated from or contacted with the input terminal assembly to be in an off state or an on state; and

the movement assembly includes a status indicator coupled to the control circuit board and providing a first indication in response to the off state or providing a second indication in response to the on state.

2. The earth leakage protection device with fault indication function according to claim 1, wherein the trip assembly comprises a trip unit arranged below the auxiliary switch and provided with a push rod through which a lifting force is applied to the auxiliary switch to place the auxiliary switch in the off state or a lifting force is released to place the auxiliary switch in the on state.

3. The leakage protection device with fault indication function according to claim 2, wherein the auxiliary switch is configured as an elastic piece, one end of the elastic piece is coupled to the control circuit board, and the other end is an elastic arm to be separated from or contacted with the input terminal assembly.

4. A leakage protection device having a fault indication function according to claim 3, wherein said input terminal assembly is a live or neutral input terminal assembly provided with contact arms cooperating with said resilient arms of said auxiliary switch.

5. The earth leakage protection device with fault display function of any one of claims 1 to 4, wherein the status indicator comprises an operating status indicator light capable of displaying a first color to provide the first indication and a fault status indicator light capable of displaying a second color to provide the second indication.

6. The leakage protection device with fault indication function according to claim 5, wherein the reset assembly comprises a reset lever and a reset button attached to the reset lever, the reset lever being of transparent material and abutting the status indicator, the reset button being exposed out of the housing and provided with an indicator hole.

7. The earth leakage protection device with fault display function of any one of claims 1 to 4, wherein the housing includes an upper cover and a base on which the movement assembly is disposed, the housing further including first and second rear covers attached to both ends of the base, respectively, the input and output terminal assemblies being located between the first and second rear covers and the upper cover, respectively, to form an input and an output.

8. The leakage protection device with fault indication function of claim 7, wherein said housing is provided with seals at least at said input end and said output end.