Enhanced waterproof leakage protector shell
By coating the surface of the residual current device (RCD) housing with a hydrophobic coating and designing the top surface of the housing as a slope, combined with sealing components and a water-blocking structure, the corrosion problem of the RCD in humid environments is solved, improving the waterproof performance and safety of the equipment.
Patent Information
- Application Number
- CN202421651718.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-07-12
AI Technical Summary
Existing residual current devices (RCDs) are susceptible to corrosion from moisture in humid environments, especially when the moisture contains salt or acidic substances. This can cause electrochemical reactions in the casing material, affecting the safety and reliability of the equipment.
A hydrophobic coating, such as a fluorocarbon coating, silicone oil coating, superhydrophobic coating, or polytetrafluoroethylene coating, is applied to the surface of the residual current device (RCD) housing. The top surface of the housing is designed to be sloping, combined with seals and water-blocking structures to prevent water droplets from adhering and flowing. A flexible waterproof membrane is used to cover critical components.
It significantly reduces the adhesion of water and liquids to the housing surface, improves waterproof performance, enhances the safety and reliability of the equipment, prevents corrosion, and ensures the normal use of switches and buttons.
Smart Images

Figure CN223651289U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a leakage protector shell technical field especially is related to a kind of enhanced waterproof leakage protector shell. BACKGROUND
[0002] Leakage protector is an important electrical equipment, for when leakage occurs in circuit, power is rapidly cut off, to protect personal safety and the normal operation of electrical equipment. In humid, water-rich environment, such as bathroom, kitchen, swimming pool, water fountain, bath place and the electrical equipment installed outdoors, leakage protector needs to have waterproof function, to avoid short circuit or leakage causes safety accident.
[0003] Prior art can realize the waterproof function of leakage protector by the following technical means: ensure that moisture cannot penetrate into the interior of the equipment by waterproof sealing design, adopt waterproof material, sealing washer and fastener to ensure the sealing property of shell;Waterproof sensor is designed in the interior to detect whether leakage occurs in circuit or equipment, trigger protection mechanism when sensor detects water, cut off circuit to prevent electrical accident;Sometimes circuit board is wrapped with waterproof coating or waterproof material to prevent moisture from causing damage to circuit. Our company also designs a sealed flame-retardant leakage protector shell based on sealing design, which has certain waterproof capacity. The defects of prior art are: water vapor in air can still stay on the surface of leakage protector shell for a long time, when water vapor contains impurities such as salt, acidic substances, etc., these impurities can form electrolyte with water vapor, and then electrochemical reaction occurs with shell material, resulting in corrosion;At the same time, temperature, humidity and other environmental factors also affect the speed and degree of corrosion.
[0004] In order to reduce the corrosion of water vapor on leakage protector shell, it is necessary to improve the existing technology and enhance its waterproof capacity. INVENTION CONTENTS
[0005] The utility model provides a kind of enhanced waterproof leakage protector shell to solve the above problems.
[0006] One of the technical solutions adopted by the utility model is: an enhanced waterproof leakage protector shell, the outer surface is coated with a hydrophobic coating, and the top surface is inclined.
[0007] Further, the hydrophobic coating is one of fluorocarbon coating, silicone oil coating, superhydrophobic coating, polytetrafluoroethylene coating and nanostructured coating.
[0008] Further, the shell includes an upper shell and a lower shell, which are connected by screws, and the assembly surface is provided with a sealing element, and the top surface is an inclined surface inclined upward to the upper shell, so that the water droplets on the top surface fall upward to the upper shell.
[0009] Furthermore, the front of the upper housing is provided with several holes for accommodating switches, reset buttons and indicator lights, and the upper edge of each hole is provided with a water-blocking structure.
[0010] Furthermore, when the hole structure is circular, the water-blocking structure is arc-shaped, covering the upper half of the hole.
[0011] Furthermore, when the hole structure is square, the water-blocking structure has a top and a side, the top having an angle, and the side covering the entire side of the hole.
[0012] Furthermore, when the hole structure is square, the water-blocking structure has a top and a side, the top being curved, and the side covering the entire side of the hole.
[0013] Furthermore, the front of the upper housing is provided with several holes for accommodating the switch, reset button and indicator light. The outer edge of each hole is provided with a water-blocking structure, and a waterproof membrane is provided on the water-blocking structure to cover the switch, reset button and indicator light and isolate moisture.
[0014] Furthermore, the waterproof membrane at the corresponding switch and reset button is an elastic membrane, which isolates water vapor without hindering the use of the switch and button.
[0015] The beneficial effects of this utility model's enhanced waterproof residual current device housing are:
[0016] 1. A hydrophobic coating is applied to the surface of the residual current device (RCD) housing to significantly reduce the adhesion of water and other liquids to the RCD surface. The top surface is designed as a slope to allow liquids to slide off, thereby enhancing the waterproof performance of the housing and improving the safety and reliability of the equipment. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the housing of an enhanced waterproof residual current device according to the first embodiment of this utility model;
[0018] Figure 2 This is a schematic diagram of the housing of an enhanced waterproof residual current device according to the third embodiment of this utility model;
[0019] The components in the attached diagram are labeled as follows: 1. Upper shell, 2. Lower shell, 3. Water-blocking structure. Detailed Implementation
[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "horizontal", "vertical", "inner", "outer", 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 should not indicate or imply that the components or elements 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.
[0022] Please see Figure 1 The first embodiment of this utility model provides an enhanced waterproof leakage current protection device housing. The outer surface of the housing is coated with fluorocarbon coating, which can form a surface hydrophobic and oleophobic structure with a microstructure at the nanoscale, namely fluorocarbon coating, so that water and other liquids are not easy to adhere to the outer surface of the housing. The fluorocarbon coating also has excellent corrosion resistance and high temperature resistance.
[0023] The housing includes an upper housing 1 and a lower housing 2, which are connected by four screws. The mounting surfaces are provided with seals. The front of the upper housing 1 has three holes for accommodating a switch, a reset button, and an indicator light. When the switch, reset button, and indicator light are assembled from the inside into the corresponding holes of the upper housing 1, a sealing plug is used for sealing. The lower housing 2 has four threaded holes. When the screws connect the upper housing 1 and the lower housing 2 from the outside, a sealing ring is used for sealing.
[0024] The top and bottom surfaces of the shell are both inclined surfaces sloping upwards towards the shell 1, making it trapezoidal when viewed from the side. Water and other liquids will slide down the inclined surfaces, effectively reducing their residence time on the shell surface.
[0025] To reduce liquid adhesion and flow at switches, reset buttons, and indicator lights, a water-blocking structure 3 is designed at each opening, wherein:
[0026] The hole used to accommodate the switch is a square hole. The corresponding water-blocking structure 3 consists of a top and sides. The top has a certain curvature to facilitate liquid sliding. The two sides cover the entire side of the hole and gradually narrow from top to bottom, blocking dripping liquid while reducing the adhesion area.
[0027] The hole for accommodating the reset button and indicator light is a circular hole, and the corresponding water-blocking structure 3 is an arc shape that covers the upper half of the hole.
[0028] In the second embodiment of this utility model, only the water-blocking structure 3 of the square hole is changed. The top of the water-blocking structure 3 has an inclination angle and is slightly tilted downwards to allow liquid to drip. The rest of the design is the same as the first embodiment.
[0029] Please see Figure 2In the third embodiment of this utility model, the water-blocking structure 3 is changed from the semi-enclosed structure in the first and second embodiments to a fully enclosed structure. A waterproof membrane is also provided on the water-blocking structure 3 to cover the switch, reset button and indicator light and isolate water vapor.
[0030] The waterproof membrane at the corresponding switch and reset button is an elastic membrane, which isolates water vapor without hindering the use of the switch and button. The rest of the design is the same as the first embodiment.
[0031] The beneficial effects of this utility model's enhanced waterproof residual current device housing are:
[0032] 1. A hydrophobic coating is applied to the surface of the residual current device (RCD) housing to significantly reduce the adhesion of water and other liquids to the RCD surface. The top surface is designed as a slope to allow liquids to slide off, thereby enhancing the waterproof performance of the housing and improving the safety and reliability of the equipment.
[0033] 2. Various sealing components are used to seal the connection structure of the housing to ensure the waterproof performance of the housing, and water-blocking structures are designed at the holes to block dripping liquid and guide it to prevent it from adhering to, flowing and corroding the switches, reset buttons and indicator lights;
[0034] 3. The water-blocking structure is designed to be fully enclosed and covered with a waterproof membrane, which can better isolate water vapor. The use of an elastic membrane can ensure the normal operation of the switch and button.
[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A reinforced waterproof residual current device housing, characterized in that, The outer surface of the housing is coated with a hydrophobic coating, and includes an upper housing and a lower housing, which are connected by screws. The mounting surface is provided with a seal, and the top surface is an inclined surface that slopes towards the upper housing.
2. The enhanced waterproof residual current device housing according to claim 1, characterized in that, The front of the upper housing has several holes for accommodating switches, reset buttons and indicator lights, and the upper edge of each hole is provided with a water-blocking structure.
3. The enhanced waterproof residual current device housing according to claim 2, characterized in that, When the hole structure is circular, the water-blocking structure is arc-shaped, covering the upper half of the hole.
4. The enhanced waterproof residual current device housing according to claim 2, characterized in that, When the hole structure is square, the water-blocking structure has a top and a side, the top has an angle, and the side covers the entire side of the hole.
5. The enhanced waterproof residual current device housing according to claim 2, characterized in that, When the hole structure is square, the water-blocking structure has a top and a side, the top being curved, and the side covering the entire side of the hole.
6. The enhanced waterproof residual current device housing according to claim 1, characterized in that, The front of the upper housing has several holes for accommodating switches, reset buttons and indicator lights. The outer edges of the holes are provided with water-blocking structures, and the water-blocking structures are provided with waterproof membranes to cover the switches, reset buttons and indicator lights.
7. The enhanced waterproof residual current device housing according to claim 6, characterized in that, The waterproof membrane at the corresponding switch and reset button is an elastic membrane.