Leakage protector with buzzing alarm and flashing prompt functions
By introducing multi-color LED lights and a buzzer into the residual current device (RCD), differentiated alarms based on fault type are achieved, solving the problem of unintuitive prompts in existing RCDs. This ensures that users can promptly handle leakage or overload faults, thus improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO CIHONG ELECTRICAL TECHNOLOGY CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-26
AI Technical Summary
Existing residual current devices (RCDs) lack intuitive and effective warning methods, making it difficult to detect leakage faults in noisy or distracted environments, which may lead to safety accidents.
Design a residual current device (RCD) with buzzer alarm and flashing light indication functions. Through the coordinated operation of multi-color LED lights and buzzer, differentiated alarms are given according to the fault type, including flashing red light, flashing yellow light, and solid green light, to guide quick troubleshooting.
It enables timely detection of leakage or overload faults in various environments, distinguishes fault types through light color and beep rhythm, and ensures that users can quickly handle faults and avoid safety hazards.
Smart Images
Figure CN224289276U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical safety protection devices, specifically a leakage current protector with buzzer alarm and flashing light functions. Background Technology
[0002] A residual current device (RCD), also known as a residual current circuit breaker, is mainly used to protect equipment from leakage faults and to protect people from fatal electric shocks. It has overload and short circuit protection functions and can be used to protect circuits or motors from overload and short circuits. It can also be used for infrequent switching and starting of circuits under normal conditions.
[0003] However, most existing residual current devices (RCDs) only have basic residual current protection and power-off functions. When a leakage occurs, although they can cut off the circuit in time, they lack intuitive and effective prompts. In some noisy environments or places where people are not paying attention, users may not be able to notice that the RCD has been activated in time, thus failing to deal with the leakage fault in time. This may lead to more serious safety accidents, such as electrical fires and equipment damage.
[0004] To address the problems existing in the aforementioned technologies, a residual current device (RCD) with both buzzer alarm and flashing light indication functions is proposed. Utility Model Content
[0005] In view of the shortcomings of the prior art, this utility model provides a leakage current protector with buzzer alarm and flashing light functions, which overcomes the shortcomings of the prior art and solves the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a leakage current protector with buzzer alarm and flashing light functions, comprising a housing, a leakage current detection module disposed inside the housing, a tripping mechanism, and a control circuit. The leakage current detection module is connected to the load line, and the tripping mechanism is controlled by the control circuit to switch the circuit on and off.
[0007] It also includes an audible and visual alarm module, which is fixed to the outer panel of the housing;
[0008] The sound and light alarm module is composed of a buzzer and a multi-color LED light group;
[0009] The control circuit has a built-in fault type identification unit, configured as follows:
[0010] Receive fault signals from the leakage current detection module;
[0011] Based on the fault type, the multi-color LED light group is driven to perform differentiated alarm actions, and the tripping mechanism is triggered simultaneously.
[0012] When leakage or overload occurs, the control circuit triggers the trip mechanism to cut off the power. The red / yellow light flashes, and the buzzer emits a continuous / intermittent alarm. The user presses the mute button to stop the buzzer. The red / yellow light continues to flash until the fault is cleared. After resetting, the green light stays on, and the power supply is restored.
[0013] As a preferred technical solution of this utility model, the multi-color LED light group includes independently packaged red, yellow and green LED beads;
[0014] The alarm modes for each color LED are configured as follows:
[0015] The red LED indicates a leakage fault;
[0016] Yellow LED bulbs indicate an overload fault;
[0017] The green LEDs remain constantly lit when the equipment is functioning normally.
[0018] As a preferred technical solution of this utility model, the front panel of the housing is provided with a mute button, which is connected in series with the buzzer power supply circuit. Pressing the button will force the buzzer to be interrupted.
[0019] As a preferred embodiment of this utility model, the fault type identification unit configures the driving logic of the buzzer as follows:
[0020] Leakage fault → Outputs a continuous beeping signal;
[0021] Overload fault → Outputs intermittent beeping signal, with a beeping cycle of 0.5 seconds on / 0.5 seconds off.
[0022] As a preferred embodiment of this utility model, the control circuit is configured to synchronously activate the audible and visual alarm module within 100ms after the tripping mechanism is activated.
[0023] As a preferred technical solution of this utility model, the multi-color LED light group is covered with a light guide column on the outside. The light guide column is made of polycarbonate with a light transmittance of ≥90% and has a sawtooth refractive pattern on its outer surface to achieve light diffusion of ≥160° in the horizontal direction.
[0024] Compared with the prior art, the beneficial effects of this utility model are:
[0025] By using multi-color LED lights and a buzzer to work together, environmental limitations are overcome, ensuring timely fault detection. The light color and buzzer rhythm can be used to distinguish between leakage and overload, guiding rapid repair. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of the present invention;
[0027] Figure 2This is a side view of the present invention;
[0028] Figure 3 For the present utility model Figure 2 A partial cross-sectional view of section AA.
[0029] In the diagram: 1. Housing; 2. Leakage detection module; 3. Tripping mechanism; 4. Multi-color LED light group; 401. Light guide column; 5. Buzzer; 6. Mute button; 7. Control circuit; 701. Fault type identification unit. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Please see Figure 1-3 A residual current device (RCD) with buzzer alarm and flashing light indication functions includes a housing 1, a leakage current detection module 2 disposed inside the housing 1, a tripping mechanism 3, and a control circuit 7. The leakage current detection module 2 is connected to the load line, and the tripping mechanism 3 is controlled by the control circuit 7 to switch the circuit on and off.
[0032] It also includes an audible and visual alarm module, which is fixed to the outer panel of housing 1;
[0033] The audible and visual alarm module is composed of a buzzer 5 and a multi-color LED light group 4.
[0034] The control circuit 7 has a built-in fault type identification unit 701, configured as follows:
[0035] Receive fault signals from leakage current detection module 2;
[0036] Based on the fault type, the multi-color LED light group 4 is driven to perform differentiated alarm actions, and the tripping mechanism 3 is triggered simultaneously.
[0037] When leakage or overload occurs, the control circuit triggers the trip mechanism to cut off the power. The red / yellow light flashes, and the buzzer emits a continuous / intermittent alarm. The user presses the mute button to stop the buzzer. The red / yellow light continues to flash until the fault is cleared. After resetting, the green light stays on, and the power supply is restored.
[0038] Specifically, the multi-color LED light group 4 includes independently packaged red, yellow, and green LED beads;
[0039] The alarm modes for each color LED are configured as follows:
[0040] The red LED indicates a leakage fault;
[0041] Yellow LED bulbs indicate an overload fault;
[0042] The green LEDs remain constantly lit when the equipment is functioning normally.
[0043] Specifically, the front panel of the housing 1 is equipped with a mute button 6, which is connected in series with the power supply circuit of the buzzer 5. Pressing the button will force the buzzer to be interrupted.
[0044] Specifically, the fault type identification unit 701 configures the driving logic for the buzzer 5 as follows:
[0045] Leakage fault → Outputs a continuous beeping signal;
[0046] Overload fault → Outputs intermittent beeping signal, with a beeping cycle of 0.5 seconds on / 0.5 seconds off.
[0047] Specifically, the control circuit 7 is configured to synchronously activate the audible and visual alarm module within 100ms after the tripping mechanism 3 is activated.
[0048] Specifically, the multi-color LED light group 4 is covered with a light guide post 401 on the outside. The light guide post 401 is made of polycarbonate with a light transmittance of ≥90% and has a sawtooth refractive pattern on its outer surface to achieve light diffusion of ≥160° in the horizontal direction.
[0049] Working principle: When leakage / overload occurs, the control circuit triggers the trip mechanism to cut off the power. The red / yellow light flashes, and the buzzer emits a continuous / intermittent alarm. The user presses the mute button to stop the buzzer. The red / yellow light continues to flash until the fault is cleared. After resetting, the green light stays on and the power supply is restored.
[0050] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0051] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0052] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A residual current device (RCD) with buzzer alarm and flashing light indication functions, comprising a housing (1), a residual current detection module (2) disposed inside the housing (1), a tripping mechanism (3), and a control circuit (7), wherein the residual current detection module (2) is connected to the load line, and the tripping mechanism (3) is controlled by the control circuit (7) to switch the circuit on and off, characterized in that: It also includes an audible and visual alarm module, which is fixed to the outer panel of the housing (1); The sound and light alarm module is composed of a buzzer (5) and a multi-color LED light group (4); The control circuit (7) has a built-in fault type identification unit (701), configured as follows: Receive fault signals from the leakage current detection module (2); According to the fault type, drive the multi-color LED light group (4) to perform differentiated alarm actions and simultaneously trigger the tripping mechanism (3).
2. A residual current device (RCD) with buzzer alarm and flashing light indication functions according to claim 1, characterized in that: The multi-color LED light group (4) includes independently packaged red, yellow and green LED beads; The alarm modes for each color LED are configured as follows: The red LED indicates a leakage fault; Yellow LED bulbs indicate an overload fault; The green LEDs remain constantly lit when the equipment is functioning normally.
3. A residual current device with buzzer alarm and flashing light indication functions according to claim 1, characterized in that: The front panel of the housing (1) is provided with a mute button (6), which is connected in series with the power supply circuit of the buzzer (5). Pressing the button will force the buzzer to be interrupted.
4. A residual current device (RCD) with buzzer alarm and flashing light indication functions according to claim 1, characterized in that: The fault type identification unit (701) configures the driving logic of the buzzer (5) as follows: Leakage fault → Outputs a continuous beeping signal; Overload fault → Outputs intermittent beeping signal, with a beeping cycle of 0.5 seconds on / 0.5 seconds off.
5. A residual current device (RCD) with buzzer alarm and flashing light indication functions according to claim 1, characterized in that: The control circuit (7) is configured to synchronously activate the audible and visual alarm module within 100ms after the tripping mechanism (3) is activated.
6. A residual current device (RCD) with buzzer alarm and flashing light indication functions according to claim 1, characterized in that: The multicolor LED light group (4) is covered with a light guide column (401) on the outside. The light guide column (401) is made of polycarbonate with a light transmittance of ≥90% and has a sawtooth refractive pattern on its outer surface to achieve light diffusion of ≥160° in the horizontal direction.