A water leak alert device

Abstract

The utility model relates to a kind of anti-leakage alarm device, including shell, control assembly, alarm device, power supply component and detection component, the conductive terminal of detection component is in contact after leakage conduction circuit, generates leakage detection signal, after control assembly receives signal, trigger alarm device sends out sound and light warning, prompt user operation control key drive execution unit to close liquid passage inside through liquid pipe, avoid leakage to soak surrounding equipment, erode building ground or wall.

Description

Technical Field

[0001] This utility model relates to the field of pipeline leak prevention technology, specifically to a leak prevention alarm device. Background Technology

[0002] Leaks are highly likely to occur during the operation of building water supply and drainage systems, as well as in the use of water-related products such as washing machines, water heaters, and dishwashers. Meanwhile, basements and bathrooms often experience waterlogging due to aging pipes and failed sealing structures. If such leaks are not detected and addressed promptly, they can cause damage to the building structure, such as corrosion and mold, and may also lead to electrical short circuits, the growth of harmful microorganisms, and other safety and hygiene hazards, resulting in property damage and even health risks for users. Currently, leak protectors used for detecting and addressing potential leaks have several shortcomings: Due to the large number of integrated components and less compact design, they are bulky and difficult to install in space-constrained environments such as kitchen cabinets and equipment racks, resulting in significant installation limitations; most use continuous power supply, leading to high power consumption and reliance on external AC power, making installation difficult in older buildings without outlets or temporary outdoor pipelines, and placing stringent requirements on the power supply conditions of the operating environment; their complex structure and numerous components increase the difficulty and cost of production and assembly, and the high precision requirements for component fitment make them prone to failure, increasing maintenance costs and overall product cost, hindering their widespread application. Utility Model Content

[0003] This invention provides a water leakage alarm device to solve the problems mentioned in the background art.

[0004] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:

[0005] A leak-proof alarm device, characterized in that it comprises a housing, the housing having an internal cavity, the housing including a liquid-passing pipe extending through the cavity and configured to connect to an external liquid pipeline; a detection component including at least two spaced-apart conductive terminals configured to generate a leak detection signal when liquid bridges therebetween; a control component disposed within the cavity of the housing and electrically connected to the detection component, for receiving the leak detection signal, the control component including an execution unit; an alarm device electrically connected to the control component and configured to issue a perceptible alarm in response to the leak detection signal received by the control component; and a power supply component disposed within the cavity of the housing, configured to provide operating power to the control component, the alarm device, and the detection component; and

[0006] The execution unit is electrically connected to the control component and is configured to change its opening and closing state in response to a leakage detection signal received by the control component, so as to block or allow liquid to flow through the liquid passage.

[0007] Preferably, the detection assembly includes a detector, the detector including a detection chamber with an opening, and at least two conductive terminals disposed within the detection chamber; the opening of the detection chamber faces the surface to be detected, thereby forming a gap between the conductive terminals and the surface to be detected, allowing leakage liquid to enter the detection chamber through the gap and bridge at least two conductive terminals.

[0008] Preferably, the housing includes an upper housing and a lower housing, which are detachably and fixedly connected by a snap-fit ​​structure.

[0009] Preferably, one end of the liquid passage tube is connected to a liquid inlet, and the other end is connected to a liquid outlet, forming a liquid channel inside the liquid passage tube for liquid to pass through.

[0010] Preferably, the actuating unit is a valve body, which is electrically connected to the control component and fluidly communicates with the liquid passage of the liquid pipe. The valve body is configured to change its opening and closing state in response to a leakage detection signal received by the control component, so as to block or allow liquid to flow through the liquid passage of the liquid pipe.

[0011] Preferably, the alarm device includes a light-emitting unit and a sound-emitting unit, which are electrically connected to the control component.

[0012] Preferably, the sound-emitting unit is configured to emit a rapid, high-frequency beep when a leak is detected, and to emit a slow, intermittent warning tone when the power supply is insufficient.

[0013] Preferably, the control component further includes a circuit board and control buttons. The circuit board is used to receive water leakage detection signals and output corresponding control signals to the alarm device. The control component also includes control buttons, which are embedded and fixed to the housing and electrically connected to the circuit board, allowing the user to manually trigger them to control the opening and closing of the alarm device and the execution unit.

[0014] Preferably, the power assembly includes a battery unit and a power cover, the housing has a battery compartment for accommodating the battery unit, and the power cover is fixedly connected to the outer wall of the housing via a snap-fit ​​structure.

[0015] Preferably, the detection component further includes a conductive cable, one end of which is electrically connected to the detector and the other end of which is connected to the control component to establish a transmission path for the detection signal.

[0016] The advantages of this utility model over the prior art are as follows:

[0017] This utility model utilizes a snap-fit ​​protrusion-groove structure between the upper and lower shells of the housing, allowing for quick assembly and disassembly without additional tools. It is suitable for space-constrained environments such as kitchen cabinets and equipment racks, facilitating internal component inspection and maintenance. Simultaneously, it resists humid environments and external impacts, solving the problems of bulky size, installation limitations, and inconvenient maintenance associated with existing water leakage protectors. The independent power supply design of the battery unit in the power assembly, combined with the snap-fit ​​protective structure of the power cover, eliminates reliance on external mains power, making it suitable for older buildings, temporary outdoor pipelines, and other scenarios without power outlets. It also blocks moisture and dust to ensure stable power supply, addressing the poor power supply flexibility of existing devices. The detection component features two spaced-apart conductive terminals forming a normally open circuit. When water leaks, the rapid water conduction circuit generates a detection signal, which is transmitted in real time to the circuit board via a conductive cable. This enables rapid and accurate detection of leaks, providing timely signal support for subsequent damage prevention and warning, thus solving the problem of delayed detection response in existing devices. Through the linkage design of the control components, alarm device, and execution unit, after receiving the leak signal, the circuit board reminds the user to drive the execution unit to quickly shut off the liquid channel of the liquid pipe, curbing the spread of leaks at the source. The components of this invention have a simple structure, and the connection methods such as buckles and bolts simplify the assembly process. The battery unit power supply and the simplification of parts reduce production and maintenance costs, balancing stability and economy. This makes it suitable for large-scale promotion in civilian and multi-scenario applications, solving the problems of complex structure and high cost of existing devices. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A perspective view of an embodiment of this utility model;

[0020] Figure 2 for Figure 1 An exploded view of the casing in an embodiment;

[0021] Figure 3 for Figure 1 An exploded view of the power supply assembly in the illustrated embodiment;

[0022] Figure 4 for Figure 1 A three-dimensional schematic diagram of the liquid passage tube in the embodiment shown;

[0023] Figure 5 for Figure 1 A cross-sectional view of the housing, control assembly, alarm device, and power supply assembly of the embodiment shown;

[0024] Figure 6 for Figure 1A three-dimensional schematic diagram of the detection component in the illustrated embodiment;

[0025] Figure 7 for Figure 6 A cross-sectional view of the detector in the embodiment shown;

[0026] Reference numerals: housing (100); upper housing (110); lower housing (120); liquid inlet pipe (130); liquid channel (131); liquid inlet (132); liquid outlet (133); mounting surface (140); slide groove (141); slot (142); control component (200); circuit board (210); control button (220); execution unit (230); alarm device (300); light-emitting unit (310); sound-emitting unit (320); power supply component (400); battery unit (410); battery compartment (411); power cover (420); slider (421); elastic buckle (422); detection component (500); detector (510); conductive cable (520); detection chamber (511); terminal (512); gap (513). Detailed Implementation

[0027] 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, not all embodiments. The following description of at least one exemplary embodiment is illustrative in nature and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary rather than limiting. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0030] This invention addresses the common problems of existing leak detectors, such as their bulky size limiting installation options, reliance on external AC power preventing installation in environments without sockets, and complex structures with numerous components leading to high production and maintenance costs. It provides a leak-proof alarm device that utilizes a coordinated structure of a housing, control component, alarm device, power supply component, and detection component. The housing features a snap-fit ​​design for quick assembly and disassembly, adapting to space-constrained environments such as kitchen cabinets. The detection component uses a detector chamber and terminal circuit to quickly detect leaks. The control component works in conjunction with the alarm device on a circuit board; upon detection of a leak, the alarm device provides simultaneous audible and visual alerts, effectively overcoming the technical shortcomings of existing leak detectors. The specific implementation of this leak-proof alarm device is described in detail below with reference to the accompanying drawings.

[0031] like Figure 1 and Figure 2 As shown, this utility model provides a water leakage alarm device, including a housing 100, a control component 200, an alarm device 300, a power supply component 400, and a detection component 500. The housing 100 includes an upper housing 110 and a lower housing 120, which are detachably fixedly connected by a snap-fit ​​structure to form an internal receiving chamber for accommodating the control component 200, the alarm device 300, and the power supply component 400. Specifically, the upper housing 110 has several snap-fit ​​protrusions around its periphery, and the lower housing 120 has corresponding snap-fit ​​grooves that match the snap-fit ​​protrusions. During assembly, the snap-fit ​​protrusions can engage with the snap-fit ​​grooves to achieve quick splicing and fixing of the upper housing 110 and the lower housing 120. Furthermore, with the help of this snap-fit ​​connection structure, the housing 100 can be quickly disassembled and assembled without additional tools, which facilitates the inspection or replacement of the control components 200, power components 400, etc. inside the housing 100. This ensures the simplicity of the housing 100 structure and improves the convenience of device maintenance.

[0032] In this invention, the housing 100 is preferably made of a material with good water resistance, insulation, and mechanical strength, such as, but not limited to, modified ABS plastic, reinforced polycarbonate (PC), and nylon alloy materials. Such materials not only effectively resist water erosion and mold growth in humid environments but also withstand certain external impacts (such as collisions and compressions that may occur during installation or use), ensuring the structural stability of the device. In terms of shape, the housing 100 has a generally rectangular shape with rounded corners. This shape is advantageous for placement and installation in confined spaces such as cabinet gaps and around equipment, while also avoiding the risk of scratches from sharp outlines. Furthermore, based on different installation scenarios and functional requirements, it can also be designed as a cylinder, polygon, or other geometric shapes to adapt to diverse usage environments.

[0033] In other embodiments (not shown in the figures), to improve the portability and fixation of the device in temporary monitoring or mobile installation scenarios, a foldable portable hook is added to the side of the housing 100. The hook is made of a tough engineering plastic, and when folded, it fits snugly against the outer surface of the housing 100. When unfolded, it can be hung on pipe supports, cabinet hooks, etc. The portable hook is fixed to the outer wall of the housing 100 by riveting or snap-fitting, and when not in use, folding it up does not significantly increase the volume of the housing 100. This facilitates the suspension and fixation of the housing 100 in situations where the position of the detector 510 needs to be moved, such as during maintenance or temporary monitoring, reducing the need for additional support points and improving the flexibility of use.

[0034] In other embodiments (not shown in the figures), several small heat dissipation holes are formed on the top of the housing 100, with the holes angled downwards. Dustproof mesh is attached to the corresponding positions on the inner side of the housing 100. The downward-angled hole design facilitates the dissipation of excess heat generated inside the housing 100, while reducing the possibility of rain or moisture directly entering the chamber through the holes. The dustproof mesh prevents fine particles and dust from entering through the heat dissipation holes, preventing dust from adhering to the circuit board 210 and other component surfaces, thus avoiding decreased heat dissipation performance or malfunction. The combination of heat dissipation holes and dustproof mesh maintains the protective performance of the housing 100 while ensuring heat dissipation and ventilation.

[0035] like Figure 1 , Figure 4 and Figure 5As shown, a liquid-conducting pipe 130 is installed inside the housing 100. A liquid channel 131 for liquid flow is formed inside the liquid-conducting pipe 130 for connection to an external liquid pipeline. The liquid-conducting pipe 130 is disposed throughout the receiving cavity formed by the housing 100. One end of the pipe is connected to a liquid inlet 132, which is located at the top of the housing 100, for connecting to an external liquid pipeline to be transported. The other end of the pipe is connected to a liquid outlet 133, which is located at the bottom of the housing 100, for discharging the liquid transported through the liquid-conducting pipe 130 to subsequent pipelines or equipment. The liquid inlet 130 and the inner wall of the housing 100 are connected by a sealed structure (such as sealing ring fitting, welding, etc.) to ensure that the liquid only flows in the liquid channel 131 and avoids leakage into the housing 100. This protects the control components 200, alarm device 300, power supply components 400 and other components inside the housing 100 from liquid corrosion and ensures the electrical stability and service life of the device. In addition, the interface specifications of the liquid inlet 132 and liquid outlet 133 are compatible with the diameter of the liquid inlet 130, which facilitates quick docking and assembly with external liquid pipelines and improves the integration convenience of the device in the pipeline system.

[0036] like Figure 1 and Figure 2 As shown, the control component 200 includes a circuit board 210, control buttons 220, and an execution unit 230. The circuit board 210, as the core control component of the control component 200, receives the leakage signal transmitted by the detection component 500 and outputs a corresponding control signal to the alarm device 300 based on this signal. The control buttons 220 are embedded in the top of the housing 100 and electrically connected to the circuit board 210, allowing the user to manually trigger them to control the opening and closing of the alarm device 300 and the execution unit 230. In this invention, the execution unit 230 is a valve body, preferably a pulse valve, which is electrically connected to the circuit board 210 and fluidly connected to the liquid channel 131 of the liquid pipe 130. Under the control of the circuit board 210, it can quickly close or open the liquid channel 131 through pulse-like actions, thereby blocking or restoring the flow of liquid, and working with the alarm device 300 to complete the warning and damage prevention operations in the event of a leakage. Using a pulse valve as the actuator 230 has several advantages: Firstly, pulse-driven operation achieves action or switching through short-term power supply, significantly reducing the continuous power supply time of the actuator when in a holding state, thereby reducing overall power consumption and facilitating power supply to the power supply component 400 and long-term standby; secondly, the pulse valve has a fast response speed and can achieve shut-off action in a very short time after receiving a water leakage signal, quickly curbing the spread of liquid from the source, and can effectively shorten the damage prevention response time when combined with audible and visual warnings.

[0037] In other embodiments (not shown in the figures), the actuator 230 is not limited to a pulse valve; it can also be a miniature electric ball valve. This valve features an integrated actuator and valve body design, resulting in a compact structure that can be directly embedded into the receiving chamber of the housing 100. Its interface specifications are compatible with the liquid inlet pipe 130, allowing for quick connection via threads. This valve is driven by a DC motor to rotate the valve ball, thus opening and closing the water path. Upon reaching the correct position, it automatically de-energizes and maintains a stable valve position. It can also have a self-locking function, providing feedback of the switch status signal to the circuit board 210, and displaying the water path status in conjunction with the alarm device 300. Alternatively, a direct-acting zero-differential-pressure solenoid valve can be used. Its compact size fits the limited space of the housing 100, and it directly controls the valve core's movement through a direct-acting electromagnetic drive principle, achieving zero-differential-pressure start-up and adapting to different water supply pressure scenarios. Under normal conditions, the water path remains unobstructed. Upon receiving a leakage signal, the coil is energized to generate a magnetic field that drives the valve core to block the liquid passage pipe 130. After power is cut off, the spring returns to its original position and opens the passage, resulting in a fast response and reliable sealing performance. Alternatively, a low-power electric two-way valve can be used, featuring a separate actuator and valve body design. The actuator can be fixed to the inner wall of the housing, while the valve body connects to the liquid passage pipe 130. After the opening and closing action is completed, it automatically cuts off power to save energy. It is also equipped with a manual control lever, allowing manual control of the valve status during power failure for convenient maintenance. It also supports multi-valve parallel control to adapt to multi-channel detection expansion needs. All of the above alternative structures can quickly block the water path after receiving a leakage detection signal from the circuit board 210, and the user can trigger a reset by operating the control button 220.

[0038] In other embodiments (not shown in the figures), to protect the circuit board 210 and its surface components of the control component 200 from external impact, a plastic protective frame is added around the edge of the circuit board 210 in the control component 200. The height of the protective frame is slightly higher than the top of the taller components on the circuit board 210, and does not obstruct component wiring and signal transmission. This plastic protective frame can preferentially withstand external impacts when the housing 100 is subjected to impact or pressure, avoiding direct impact on small components such as capacitors and resistors, thereby preventing components from falling off or being damaged, and ensuring the stable operation of the core functions of the control unit. The protective frame is made of insulating and cushioning engineering plastic and is fixed to the circuit board 210 with screws or clips for easy assembly and maintenance.

[0039] like Figure 1 and Figure 2As shown, the alarm device 300 includes a light-emitting unit 310 and a sound-emitting unit 320. The light-emitting unit 310 and the sound-emitting unit 320 are electrically connected to the circuit board 210 of the control component 200. Under the command of the circuit board 210, the light-emitting unit 310 can emit a flashing warning light, while the sound-emitting unit 320 can emit a water leak alarm sound or a low power alarm sound. Specifically, when the detection component 500 detects a water leak, the sound-emitting unit 320 responds to the command of the circuit board 210 and emits a water leak alarm sound; when the power component 400 has insufficient power, the sound-emitting unit 320 emits an alarm sound to remind the user of low power. The light-emitting unit 310 and the sound-emitting unit 320 work together. When the detection component detects a water leak and the circuit board 210 issues a command, the light-emitting unit 310 flashes or lights up according to a preset pattern; when the control button 220 of the control component 200 is operated to turn off the alarm sound and activate the execution unit 230, the light-emitting unit 310 flashes or turns off again according to the set pattern, thereby using light signals to assist in indicating the working status of the device.

[0040] In this invention, the alarm device 300 can be configured with differentiated alarm prompts for multiple types. For example, the sound-emitting unit 320 can emit sound and volume alarms corresponding to different fault types, such as water leakage (rapid high-frequency beeping) and low battery (slow interval prompting tone). Furthermore, the color and flashing logic of the light-emitting unit 310 are synchronized with the sound pattern. In other embodiments, manual volume and brightness adjustment functions can be added, allowing users to flexibly adjust settings according to the installation environment. The flashing or lighting mode of the light-emitting unit 310 can be differentiated by fault / status type (e.g., high-frequency red flashing when there is a water leak, low-frequency slow flashing yellow when the battery is low, solid green or off when the device is normal, solid red when the valve is open and solid green when closed), or by operation / battery level (quick flashing 3 times and then slowly turning off when the control button 220 is pressed, solid green or off when the battery is high, solid yellow when the battery is medium, and low-frequency slow flashing yellow). It also follows alarm priority logic—a water leak alarm uses strong light and high-frequency flashing to cover other types of alarms, a low battery alarm is only triggered when there is no water leak, and short-duration flashing for operation feedback does not conflict with the light signals of fault alarms. It should be noted that the light-emitting form of the light-emitting unit 310 is not limited to the above types. It can also be expanded to other light-emitting modes such as multi-color gradient and zoned lighting, depending on the needs of the actual application scenario or the user's personalized settings, to further improve the recognizability of warning information and the adaptability of the device.

[0041] Please refer to the following: Figure 1 , Figure 2 and Figure 3The power supply assembly 400 includes a battery unit 410 and a power cover 420. In this invention, the battery unit 410 is preferably a dry cell battery, which is positioned and installed in a pre-set battery compartment 411 inside the housing 100. It provides working power to the circuit board 210 of the control assembly 200, the light-emitting unit 310 and the sound-emitting unit 320 of the alarm device 300, the execution unit 230, and the detection assembly 500 without relying on an external power supply, making it suitable for installation scenarios without sockets. The power cover 420 is set to correspond to the opening of the battery compartment 411. Its edge is fixed to the outer wall of the housing 100 by a sliding buckle structure, forming a sealed protection for the battery unit 410. This not only prevents external moisture and dust from entering the battery compartment, avoiding the dry cell battery from being affected by moisture or impurities, but also allows it to be quickly opened by sliding along a preset track, making it convenient for users to replace the battery unit 410 regularly, thus balancing protection and maintenance convenience. Specifically, the housing 100 has a mounting surface 140 for mounting and fixing the power cover 420. The mounting surface 140 has parallel strip-shaped grooves 141 on both sides. In addition to the grooves 141, the mounting surface 140 also has a slot 142, which is a concave mounting slot structure. Correspondingly, a slider 421 that fits the groove 141 extends integrally from the edge of the power cover 420. The slider 421 is configured as an elongated structure protruding from the edge of the power cover 420. The power cover 420 also has an elastic buckle 422 that fits the slot 142. The elastic buckle 422 is configured as a plastic spring structure with an arc-shaped protrusion. During assembly, align the slider 421 of the power cover 420 with the slide groove 141 and push it in until the elastic buckle 422 is engaged in the slot 142 under the action of elastic force to complete the locking. During disassembly, push the power cover 420 in the vertical upward direction to make the elastic buckle 422 disengage from the slot 142 and the slider 421 disengage from the slide groove 141, so that the battery compartment can be opened. No tools are required throughout the process. The structure is stable and the operation is convenient.

[0042] In other embodiments, the battery unit is not limited to disposable dry cell batteries and can also employ other forms of independent power sources. For example, rechargeable batteries (such as lithium polymer batteries, nickel-metal hydride batteries, etc.) can be used as battery units, and corresponding charging management circuits and charging interfaces (such as Micro-USB, Type-C interfaces) can be added inside the casing so that users can charge the battery through an external power adapter or solar panel, achieving power recycling and reducing long-term usage costs and environmental burden. In other embodiments, an externally mountable portable power pack can also be configured, connected to the device body via a dedicated connection cable, to provide longer battery life in special scenarios. In addition, as a contingency plan, the power assembly 400 can also be configured to provide an optional external DC power interface in addition to relying primarily on dry cell batteries or rechargeable batteries for power supply. This allows for the connection of a stable external DC power source in scenarios where mains power is available but the device needs to be kept in an independent installation position, thereby extending battery life or ensuring continuous operation of the device when the battery is depleted.

[0043] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the detection assembly 500 includes a detector 510 and a conductive cable 520. The detector 510 is configured as a box shape with a cavity at the bottom; in this invention, a square box structure is preferred. This bottom cavity is a detection chamber 511, and two spaced-apart conductive terminals 512 are provided inside the detection chamber 511, forming a normally open circuit. One end of the conductive cable 520 is electrically connected to the detector 510, and the other end is connected to the circuit board 210 of the control assembly 200 to establish a transmission path for the detection signal. In use, the detector 510 is placed on the surface to be tested (the floor of equipment or areas prone to leakage, such as washing machines, water heaters, pipe interfaces, etc.) with the opening of the detection chamber 511 facing downwards. At this time, a gap 513 is formed between the conductive terminals 512 and the surface to be tested, which allows leakage liquid to pass through and connects the two conductive terminals 512. When a water leak occurs, water flows into the detection chamber 511 along the ground, forming a conductive path between the two conductive terminals 512, thus turning on the normally open circuit. At this time, the detector 510 generates a water leak detection signal in real time and transmits it quickly to the circuit board 210 via the conductive cable 520. The circuit board 210 then triggers the alarm device 300 to issue a warning, reminding the user to press the control button 220 to drive the execution unit 230 to block the water path, thus achieving a linkage control of "detection-alarm-damage prevention".

[0044] In other embodiments (not shown in the figures), to enhance the impact and contamination resistance of the detection component, a removable elastic silicone protective sleeve is fitted over the detector 510 in the detection component 500. The surface of the protective sleeve has several raised arc-shaped baffles, and a pre-drilled groove is provided at the position of the conductive terminal 512 of the detector 510. The elastic protective sleeve is made of water-resistant, oil-resistant, and resilient silicone material, which can buffer the external force when the detector 510 is subjected to collision or compression, preventing the outer shell of the detector 510 from cracking or the conductive terminal 512 from deforming. The arc-shaped baffles can prevent dust, oil, and other impurities from directly adhering to the surface of the detector 510, delaying the entry of contaminants into the detection chamber 511. The groove ensures that after the protective sleeve is fitted, it does not affect the entry of leakage liquid into the detection chamber 511 and the connection to the conductive terminal 512, thereby not hindering the leakage detection function and extending the service life of the detector 510.

[0045] The working principle of this utility model is as follows: When the water leakage alarm device is working, the battery unit 410 of the power supply component 400 continuously supplies power to the circuit board 210 of the control component 200, the light-emitting unit 310 and the sound-emitting unit 320 of the alarm device 300, as well as the execution unit 230, the detection component 500 and other electrical components, so that the device is in a ready-to-detect state. Before use, the detector 510 of the detection component 500 is placed on the ground below equipment or areas prone to water leakage, such as washing machines, water heaters, and pipe interfaces, with the "detection chamber 511 opening facing down". At this time, the normally open circuit composed of two conductive terminals 512 in the detector 510 is in the open state, and no water leakage detection signal is generated. When water leaks from the outside, the water flows into the detection chamber 511 of the detector 510 along the ground. Because water is conductive, it connects the two conductive terminals 512, making the normally open circuit that was originally disconnected open. The detector 510 then generates a water leak detection signal, which is quickly transmitted to the circuit board 210 of the control component 200 through the conductive cable 520. After receiving the water leak detection signal, the circuit board 210 outputs a control command to the alarm device 300. The sound unit 320 emits a rapid, high-frequency water leak alarm sound, and the light unit 310 lights up in a red high-frequency flashing mode, reminding the user through a dual warning of "sound + light". When the user hears or sees the alarm, pressing the control button 220 on the housing 100 sends a signal to the circuit board 210. The circuit board 210 simultaneously performs two core actions: firstly, it sends a drive signal to the execution unit 230 (pulse valve). Under the action of this signal, the pulse valve quickly closes the liquid channel 131 of the liquid pipe 130 inside the housing 100 through pulse-type mechanical action, directly blocking the water path and curbing the expansion of the leak from the source; secondly, it controls the sound unit 320 to stop the leak alarm sound, and simultaneously controls the light unit 310 to change according to the set mode of "quickly flashing 3 times and then slowly turning off". In addition, when the battery unit 410 of the power supply component 400 is low on power, the circuit board 210 will monitor the low power signal in real time and send a corresponding instruction to the alarm device 300: the sound unit 320 emits a slow-interval low power warning sound, and the light unit 310 lights up in a yellow low-frequency slow flashing mode, reminding the user to replace the battery in time to ensure the continuous and reliable operation of the device.

[0046] In summary, this utility model achieves the following technical effects: The snap-fit ​​protrusion-groove structure between the upper shell 110 and lower shell 120 in the housing 100 allows for quick assembly and disassembly without additional tools, making it suitable for space-constrained environments such as kitchen cabinets and equipment racks. It also facilitates the inspection and maintenance of internal components, while resisting humid environments and external impacts, solving the problems of bulky size, limited installation, and inconvenient maintenance of existing water leakage protectors. The independent power supply design of the battery unit 410 in the power supply component 400, combined with the bolt-sealed protective structure of the power cover 420, eliminates dependence on external mains power, making it suitable for old buildings, outdoor temporary pipelines, and other scenarios without sockets. It also blocks moisture and dust to ensure stable power supply, solving the problem of poor power supply flexibility in existing devices. The two spaced-apart conductive terminals 51 in the detection component 500... The normally open circuit consisting of two components allows for rapid water conduction to generate a detection signal when a leak occurs. This signal is transmitted in real time to the circuit board 210 via the conductive cable 520, enabling rapid and accurate leakage detection and providing timely signal support for subsequent damage prevention warnings, thus solving the problem of delayed detection response in existing systems. Through the linkage design of the control component 200, alarm device 300, and execution unit 230, after receiving the leakage signal, the circuit board 210 reminds the user to drive the execution unit 230 to quickly shut off the liquid channel 131 of the liquid pipe 130, thus curbing the spread of leakage at its source. The components of this invention have a simple structure, and the connection methods such as buckles and bolts simplify the assembly process. Battery power supply and simplified parts reduce production and maintenance costs, balancing stability and economy. This makes it suitable for large-scale promotion in civilian and multi-scenario applications, solving the problems of complex structure and high cost in existing devices.

[0047] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0048] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0049] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water leakage alarm device, characterized in that, The system includes a housing (100) having an internal receiving chamber, the housing (100) including a liquid-passing pipe (130) disposed through the receiving chamber and configured to connect to an external liquid pipeline; a detection assembly (500) including at least two spaced-apart conductive terminals (512) configured to generate a leakage detection signal when liquid bridges therebetween; and a control assembly (200) disposed within the receiving chamber of the housing (100) and connected to the detection assembly. The component (500) is electrically connected for receiving a leak detection signal; the control component (200) includes an execution unit (230); an alarm device (300) is electrically connected to the control component (200) and configured to issue a perceptible alarm in response to a leak detection signal received by the control component (200); and a power supply component (400) is disposed in a receiving cavity of the housing (100) and configured to provide operating power to the control component (200), the alarm device (300), and the detection component (500). as well as The execution unit (230) is electrically connected to the control component (200) and is configured to change its opening and closing state in response to a leakage detection signal received by the control component (200) to block or allow liquid to flow through the liquid passage (130).

2. The water leakage alarm device according to claim 1, characterized in that, The detection assembly (500) includes a detector (510) having an opening in a detection chamber (511) and at least two conductive terminals (512) disposed within the detection chamber (511). The opening of the detection chamber (511) faces the surface to be detected, forming a gap (513) between the conductive terminals (512) and the surface to be detected, allowing leakage liquid to enter the detection chamber (511) through the gap (513) and bridge at least two conductive terminals (512).

3. The water leakage alarm device according to claim 1, characterized in that, The housing (100) includes an upper housing (110) and a lower housing (120), which are detachably fixedly connected by a snap-fit ​​structure.

4. The water leakage alarm device according to claim 1, characterized in that, One end of the liquid passage pipe (130) is connected to the liquid inlet (132), and the other end is connected to the liquid outlet (133). A liquid channel (131) for liquid to pass through is formed inside the liquid passage pipe (130).

5. The water leakage alarm device according to claim 4, characterized in that, The actuator (230) is a valve body that is electrically connected to the control component (200) and in fluid communication with the liquid passage (131) of the liquid pipe (130). The valve body is configured to change its opening and closing state in response to a leakage detection signal received by the control component (200) to block or allow liquid to flow through the liquid passage (131) of the liquid pipe (130).

6. The water leakage alarm device according to claim 1, characterized in that, The alarm device (300) includes a light-emitting unit (310) and a sound-emitting unit (320), which are electrically connected to the control component (200).

7. The water leakage alarm device according to claim 6, characterized in that, The sound-emitting unit (320) is configured to emit a rapid, high-frequency beep when a leak is detected, and to emit a slow, intermittent alert tone when the power supply assembly (400) is low on power.

8. The water leakage alarm device according to claim 1, characterized in that, The control component (200) further includes a circuit board (210) and a control button (220). The circuit board (210) is used to receive a water leakage detection signal and output a corresponding control signal to the alarm device (300). The control component (200) also includes a control button (220), which is embedded and fixed on the housing (100) and electrically connected to the circuit board (210) for manual triggering by the user to control the opening and closing of the alarm device (300) and the execution unit (230).

9. The water leakage alarm device according to claim 1, characterized in that, The power assembly (400) includes a battery unit (410) and a power cover (420). The housing (100) has a battery compartment (411) for accommodating the battery unit (410). The power cover (420) is fixedly connected to the outer wall of the housing (100) by a snap-fit ​​structure.

10. The water leakage alarm device according to claim 2, characterized in that, The detection component (500) also includes a conductive cable (520), one end of which is electrically connected to the detector (510) and the other end is connected to the control component (200) to establish a transmission path for the detection signal.

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