Alarm type residual-current circuit breaker

Abstract

The utility model relates to the technical field of residual-current circuit breakers, in particular to an alarm type residual-current circuit breaker, which comprises a residual-current circuit breaker body, an operating handle is rotatably arranged on the residual-current circuit breaker body, a shifting assembly is mounted on the top surface of one end of the residual-current circuit breaker body, and an alarm assembly is mounted on the top surface of the other end of the residual-current circuit breaker body. The toggle assembly comprises a toggle switch body, the toggle switch body is rotatably connected with a rotary toggle block, the rotary toggle block is provided with a push rod, the peripheral wall of the push rod is rotatably connected with a rotary sleeve, the rotary sleeve abuts against the outer wall of the operating handle, the alarm assembly comprises an audible and visual alarm, and the audible and visual alarm is electrically connected with the toggle switch body. The alarm function is achieved through mechanical linkage of the operating handle and the shifting assembly, dependence on an electronic sensor is not needed, the problem of false alarm or missing alarm caused by environmental interference is solved, the maintenance cost is reduced, the influence of electromagnetic interference is reduced, the alarm device is particularly suitable for complex working conditions such as moisture and high temperature, and the reliability of the alarm function is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of residual current circuit breaker technology, and in particular to an alarm-type residual current circuit breaker. Background Technology

[0002] As a core device for electrical safety protection, the core function of a residual current circuit breaker is to quickly disconnect the circuit when an abnormal leakage current is detected. At the same time, it must have multiple protection capabilities such as overload and short circuit. The residual current circuit breaker detects the leakage current through a zero-sequence current transformer. When the current exceeds the threshold, it must disconnect the power supply within 0.1 seconds to avoid electric shock accidents.

[0003] A search revealed Chinese patent CN213958884U, which provides a residual current circuit breaker with a leakage current indication mechanism. During use, the position sensor detects the position of the switch. When the switch springs up due to leakage current, the position sensor detects the position change and triggers an alarm buzzer and alarm light, thus enabling timely detection of problems.

[0004] However, during use, it was found that the device's sensitivity decreased after long-term use due to environmental interference (such as dust accumulation and temperature and humidity changes), which could easily lead to false alarms or missed alarms. The sensor requires additional power supply and signal processing circuitry, which increases the cost and complexity of the equipment. Furthermore, it is susceptible to electromagnetic interference in complex working conditions such as humidity and high temperature, which is not conducive to the alarm use of the leakage circuit breaker. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an alarm-type residual current circuit breaker. The alarm function is achieved through the mechanical linkage between the operating handle and the toggle assembly, eliminating the need for electronic sensors. This reduces false alarms or missed alarms caused by environmental interference, lowers maintenance costs, and reduces the impact of electromagnetic interference. It is particularly suitable for complex working environments such as humid and high-temperature conditions, ensuring the reliability of the alarm function.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an alarm-type residual current circuit breaker, including a residual current circuit breaker body, an operating handle rotatably mounted on the residual current circuit breaker body, a toggle assembly mounted on the top surface of one end of the residual current circuit breaker body, an alarm assembly mounted on the top surface of the other end of the residual current circuit breaker body, the toggle assembly including a toggle switch body, a rotating block rotatably connected to the toggle switch body, a push rod mounted on the rotating block, a rotating sleeve rotatably connected to the outer peripheral wall of the push rod, and the rotating sleeve abutting against the outer wall of the operating handle;

[0007] The alarm component includes an audible and visual alarm, which is electrically connected to the toggle switch body.

[0008] Preferably, a magnetic block is installed on the top surface of the residual current circuit breaker body, and multiple metal blocks are fixed on the bottom surface of the audible and visual alarm, with the multiple metal blocks magnetically attracted to the magnetic block.

[0009] Through the above technical solution, the audible and visual alarm is fixed by the metal block and magnetic block on the bottom, ensuring the stability of the device when the alarm is triggered. At the same time, it is convenient to replace the damaged leakage circuit breaker body or the audible and visual alarm, thus reducing the cost of use.

[0010] Preferably, one end of the push rod has a slot, and the push rod is inserted into the outer wall of the rotating block through the slot.

[0011] Preferably, the push rod has multiple through holes, and the rotating block has multiple round holes, with the through holes and round holes communicating with each other.

[0012] Preferably, a U-shaped block is inserted into the push rod through a through hole, and the U-shaped block is inserted into the rotating paddle through a round hole. A connecting block is inserted into the outer peripheral wall of the other end of the U-shaped block, and the inner wall of the U-shaped block and the inner wall of the connecting block abut against the outer peripheral wall of the push rod, respectively.

[0013] The above technical solution involves inserting the push rod into the outer wall of the rotating block through the slot, inserting the U-shaped block into the through hole and the round hole respectively, and then inserting the connecting block into the U-shaped block.

[0014] Preferably, an L-shaped block is fixed on the top surface of the U-shaped block, and a positioning block is fixed on the top surface of the connecting block, with the positioning block and the L-shaped block being inserted into each other.

[0015] Through the above technical solution, the U-shaped block drives the L-shaped block to insert into the connecting block, completing the installation of the push rod and the rotating lever, improving the stability of the push rod and facilitating the installation and disassembly of the push rod.

[0016] Preferably, the L-shaped block has two symmetrically arranged grooves, and the grooves are provided with elastic elements.

[0017] Preferably, one end of the elastic element is fixedly connected to the L-shaped block, and the outer wall of the other end of the elastic element abuts against the positioning block.

[0018] Through the above technical solution, the elastic element pops out from the groove and abuts against the connecting block, ensuring the stability of the U-shaped block installation.

[0019] The beneficial effects of this utility model are:

[0020] 1. When a leakage fault occurs in the circuit, the tripping mechanism inside the leakage circuit breaker body activates, driving the operating handle to quickly trip from the closed position to the open position. During the movement of the operating handle, its outer wall pushes the rotating sleeve, which in turn drives the push rod and rotating block to rotate around the toggle switch body. The rotation of the rotating block triggers the contacts of the toggle switch body to close, energizing the audible and visual alarm and emitting an audible and visual alarm signal. The alarm function is achieved through the mechanical linkage between the operating handle and the toggle assembly, without relying on electronic sensors, reducing false alarms or missed alarms caused by environmental interference, reducing maintenance costs, and reducing the impact of electromagnetic interference. It is especially suitable for complex working environments such as humid and high-temperature environments, ensuring the reliability of the alarm function.

[0021] 2. The audible and visual alarm is fixed by the metal block on the bottom and the magnetic block, which ensures the stability of the device when the alarm is triggered. At the same time, it is convenient to replace the damaged residual current circuit breaker or the audible and visual alarm, thus reducing the cost of use.

[0022] 3. When installing the push rod, after radially inserting the push rod into the outer wall of the rotating block through the slot, insert the U-shaped block into the through hole of the push rod and the round hole of the rotating block respectively to form a radial limit. Then, insert the connecting block into the U-shaped block. At this time, the U-shaped block drives the L-shaped block to insert into the connecting block, completing the installation of the push rod and the rotating block. This improves the stability of the push rod, facilitates the installation and disassembly of the push rod, and also facilitates the replacement of the toggle switch body, reduces the cost of use, and facilitates maintenance and replacement operations.

[0023] 4. When inserting the U-shaped block, after the L-shaped block and the connecting block are inserted, the elastic element pops out from the groove and abuts against the connecting block, ensuring the stability of the U-shaped block installation; when disassembling, press the connecting block back into the groove, so that the connecting block and the elastic element are separated, and then remove the connecting block and the U-shaped block, which makes it easy to disassemble the push rod and improves the ease of use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a bottom perspective view of the alarm component structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the toggle assembly structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the push rod structure assembly of this utility model;

[0028] Figure 5 This is a schematic diagram of the elastic element structure of this utility model.

[0029] In the diagram: 100, residual current circuit breaker body; 101, operating handle; 200, toggle assembly; 201, toggle switch body; 202, rotary lever; 203, push rod; 204, rotating sleeve; 205, slot; 206, through hole; 207, round hole; 208, U-shaped block; 209, connecting block; 210, L-shaped block; 211, positioning block; 212, groove; 213, elastic element; 300, alarm assembly; 301, audible and visual alarm; 302, magnetic block; 303, metal block. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figure 1-4 As shown, this embodiment provides an alarm-type residual current circuit breaker, including a residual current circuit breaker body 100, an operating handle 101 rotatably mounted on the residual current circuit breaker body 100, a toggle assembly 200 mounted on the top surface of one end of the residual current circuit breaker body 100, and an alarm assembly 300 mounted on the top surface of the other end of the residual current circuit breaker body 100. The toggle assembly 200 includes a toggle switch body 201, a rotating block 202 rotatably connected to the toggle switch body 201, a push rod 203 mounted on the rotating block 202, and a rotating sleeve 204 rotatably connected to the outer peripheral wall of the push rod 203. The rotating sleeve 204 abuts against the outer wall of the operating handle 101.

[0033] The alarm component 300 includes an audible and visual alarm 301, which is electrically connected to the toggle switch body 201.

[0034] A magnetic block 302 is installed on the top surface of the residual current circuit breaker body 100, and multiple metal blocks 303 are fixed on the bottom surface of the audible and visual alarm 301. The multiple metal blocks 303 are magnetically attracted to the magnetic block 302. The audible and visual alarm 301 is fixed by the magnetic block 302 attached to the metal blocks 303 on the bottom surface, ensuring the stability of the device when the alarm is triggered. At the same time, it is convenient to replace the damaged residual current circuit breaker body 100 or the audible and visual alarm 301, thus reducing the cost of use.

[0035] One end of the push rod 203 has a slot 205, through which the push rod 203 is inserted into the outer wall of the rotating block 202. The push rod 203 has multiple through holes 206, and the rotating block 202 has multiple round holes 207. The through holes 206 and the round holes 207 are connected. A U-shaped block 208 is inserted into the push rod 203 through the through holes 206. The U-shaped block 208 is inserted into the rotating block 202 through the round holes 207. A connecting block 209 is inserted into the outer peripheral wall of the other end of the U-shaped block 208. The inner wall of the U-shaped block 208 and the inner wall of the connecting block 209 abut against the outer peripheral wall of the push rod 203, respectively. After the push rod 203 is inserted into the outer wall of the rotating block 202 through the slot 205, the U-shaped block 208 is inserted into the through holes 206 and the round holes 207, respectively. Then the connecting block 209 is inserted into the U-shaped block 208.

[0036] An L-shaped block 210 is fixed on the top surface of the U-shaped block 208, and a positioning block 211 is fixed on the top surface of the connecting block 209. The positioning block 211 and the L-shaped block 210 are inserted into each other. The U-shaped block 208 drives the L-shaped block 210 to insert into the connecting block 209, thereby completing the installation of the push rod 203 and the rotating lever 202, improving the stability of the push rod 203, and facilitating the installation and disassembly of the push rod 203.

[0037] Working principle: When a leakage fault occurs in the circuit, the tripping mechanism inside the leakage circuit breaker body 100 is activated, driving the operating handle 101 to quickly trip from the closed position to the open position. During the movement of the operating handle 101, its outer wall pushes the rotating sleeve 204, which in turn drives the push rod 203 and the rotating block 202 to rotate around the toggle switch body 201. The rotation of the rotating block 202 triggers the contacts of the toggle switch body 201 to close, energizing the audible and visual alarm 301 and emitting an audible and visual alarm signal. The alarm function is realized through the mechanical linkage between the operating handle 101 and the toggle assembly 200, without relying on electronic sensors, reducing the problem of false alarms or missed alarms caused by environmental interference (dust, temperature and humidity changes), reducing maintenance costs, and reducing the impact of electromagnetic interference. It is especially suitable for complex working environments such as humid and high-temperature environments, ensuring the reliability of the alarm function.

[0038] The audible and visual alarm 301 is fixed by the metal block 303 on the bottom surface and the magnetic block 302, which ensures the stability of the device when the alarm is triggered. At the same time, it is convenient to replace the damaged leakage circuit breaker body 100 or the audible and visual alarm 301, thus reducing the cost of use.

[0039] When installing the push rod 203, after radially inserting the push rod 203 into the outer wall of the rotating block 202 through the slot 205, insert the U-shaped block 208 into the through hole 206 of the push rod 203 and the round hole 207 of the rotating block 202 respectively to form a radial limit. Then, insert the connecting block 209 into the U-shaped block 208. At this time, the U-shaped block 208 drives the L-shaped block 210 to insert into the connecting block 209, completing the installation of the push rod 203 and the rotating block 202. This improves the stability of the push rod 203, facilitates the installation and disassembly of the push rod 203, and also facilitates the replacement and use of the toggle switch body 201, reducing the cost of use and facilitating maintenance and replacement operations.

[0040] Example 2

[0041] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, based on Embodiment 1, the L-shaped block 210 has two symmetrically arranged grooves 212. An elastic element 213 is provided inside the groove 212. One end of the elastic element 213 is fixedly connected to the L-shaped block 210, and the outer wall of the other end of the elastic element 213 abuts against the positioning block 211. The elastic element 213 pops out from the groove 212 and abuts against the connecting block 209, ensuring the stability of the U-shaped block 208 installation.

[0042] When the U-shaped block 208 is inserted, after the L-shaped block 210 is inserted into the connecting block 209, the elastic element 213 pops out from the groove 212 and abuts against the connecting block 209, ensuring the stability of the U-shaped block 208 installation; when disassembling, press the connecting block 209 back into the groove 212, so that the connecting block 209 and the elastic element 213 are separated, and after removing the connecting block 209 and the U-shaped block 208, it is convenient to disassemble the push rod 203, improving the ease of use.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An alarm type residual current circuit breaker, comprising a residual current circuit breaker body (100), an operating handle (101) is rotatably arranged on the residual current circuit breaker body (100), a toggle assembly (200) is arranged on the top surface of one end of the residual current circuit breaker body (100), and an alarm assembly (300) is arranged on the top surface of the other end of the residual current circuit breaker body (100), characterized in that: The toggle assembly (200) comprises a toggle switch body (201), a rotating toggle block (202) is rotationally connected to the toggle switch body (201), a push rod (203) is installed on the rotating toggle block (202), a rotating sleeve (204) is rotationally connected to the outer peripheral wall of the push rod (203), and the rotating sleeve (204) abuts against the outer wall of the operating handle (101). The alarm assembly (300) comprises an audible and visual alarm (301), and the audible and visual alarm (301) is electrically connected with the toggle switch body (201).

2. The alarm-type residual current circuit breaker as described in claim 1, characterized in that: A magnetic attraction block (302) is installed on the top surface of the residual current circuit breaker body (100), a plurality of metal blocks (303) are fixedly arranged on the bottom surface of the audible and visual alarm (301), and the plurality of metal blocks (303) are magnetically attracted to the magnetic attraction block (302).

3. The alarm-type residual current circuit breaker as described in claim 1, characterized in that: One end of the push rod (203) is provided with a slot (205), and the push rod (203) is inserted and matched with the outer wall of the rotating toggle block (202) through the slot (205).

4. The alarm-type residual current circuit breaker as described in claim 3, characterized in that: A plurality of through holes (206) are formed in the push rod (203), and a plurality of circular holes (207) are formed in the rotating toggle block (202), and the through holes (206) are communicated with the circular holes (207).

5. The alarm-type residual current circuit breaker as described in claim 4, characterized in that: A U-shaped block (208) is inserted into the through hole (206) of the push rod (203), the U-shaped block (208) is inserted and matched with the rotating toggle block (202) through the circular hole (207), a connecting block (209) is inserted into the outer peripheral wall of the other end of the U-shaped block (208), and the inner walls of the U-shaped block (208) and the connecting block (209) abut against the outer peripheral wall of the push rod (203).

6. The alarm-type residual current circuit breaker as described in claim 5, characterized in that: An L-shaped block (210) is fixedly arranged on the top surface of the U-shaped block (208), and a positioning block (211) is fixedly arranged on the top surface of the connecting block (209).

7. The alarm-type residual current circuit breaker as described in claim 6, characterized in that: Two recesses (212) are symmetrically formed in the L-shaped block (210), and an elastic member (213) is arranged in the recess (212).

8. The alarm-type residual current circuit breaker as described in claim 7, characterized in that: One end of the elastic member (213) is fixedly connected with the L-shaped block (210), and the other end of the elastic member (213) abuts against the positioning block (211).

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