Sealing structure and its networked lamp controller

Abstract

The utility model discloses a sealing structure and networking type lamp controller thereof for realizing the high protection level and good sealing performance of equipment together. The sealing structure comprises an upper cover, a sealing rubber ring and a lower shell, wherein the upper cover and the lower shell are assembled together, the sealing rubber ring is arranged in the middle, and the upper cover and the lower shell are fixed by a locking device. The material of the upper cover and the lower shell is engineering plastic or metal material, and the surface of the upper cover and the lower shell is treated by waterproof, dustproof and anticorrosion processes.

Description

Technical Field

[0001] This utility model relates to the field of airport equipment, and in particular to a sealed structure and its networked light controller. Background Technology

[0002] As a crucial component of airport runway lighting systems, the sealing structure of navigation light controllers directly impacts their protection level, reliability, and lifespan. Currently, the sealing structure of navigation light controllers primarily employs the following solutions:

[0003] 1. Mechanical seal solution

[0004] (1) Traditional sealing ring and gasket structure

[0005] In current navigation light controllers, the most common sealing method is physical sealing using O-rings, gaskets, or silicone sealing materials. Its basic structure is as follows:

[0006] At the joints of the outer casing: sealing gaskets or silicone sealing rings are used at the joints of the outer casing (such as the upper and lower covers, front and rear covers) to ensure the airtightness of the joints.

[0007] Cable outlets: Controllers typically have cable inlet and outlet ports, where waterproof sealing joints (such as rubber sealing rings or conical sealing rings) are usually used to ensure the protection level.

[0008] Mounting holes: Some controllers require screw mounting. Use rubber gaskets or waterproof screws to seal around the screw holes to prevent moisture penetration.

[0009] (2) Double-shell structure

[0010] Some navigation light controllers employ a double-layered housing structure to further enhance sealing:

[0011] Housing: Primarily used to withstand external environmental influences, such as rain, dust, high and low temperatures, while also providing additional mechanical protection.

[0012] Inner casing: Encapsulates the core circuitry and is typically made of highly sealing materials (such as stainless steel or engineering plastics). It is filled with desiccant or nitrogen to reduce internal moisture condensation.

[0013] (3) Mechanical compression seal

[0014] By applying high-strength bolts at the joints of the housing, combined with highly elastic silicone gaskets, the sealing performance of the connection points is enhanced, thereby improving the overall protection level (reaching IP67 or higher).

[0015] (4) Welding seal

[0016] For some controllers that do not require disassembly and maintenance, the housing can be encapsulated using laser welding or argon arc welding to achieve higher sealing and corrosion resistance.

[0017] 2. Liquid sealing and filling solution

[0018] To improve sealing performance, some controllers employ liquid sealing filling technology, which mainly includes:

[0019] (1) Silicone / epoxy resin filler

[0020] The circuit board or housing of the controller is filled with liquid sealing materials, such as epoxy resin, polyurethane, or silicone, which form a waterproof protective layer after curing.

[0021] advantage:

[0022] It has strong waterproof, dustproof, and corrosion-resistant capabilities;

[0023] Improve mechanical strength and impact resistance;

[0024] It can reduce the impact of external temperature changes on internal components.

[0025] shortcoming:

[0026] It is not easy to disassemble and maintain; if a malfunction occurs, the entire unit must be replaced.

[0027] Air bubbles may be generated during the curing process, affecting the sealing quality.

[0028] (2) Gel filling

[0029] Some high-end navigation light controllers use gel encapsulation technology, filling the inside of the housing with flexible gel material to ensure airtightness while providing a certain degree of cushioning, reducing the impact of shock on the circuit.

[0030] 3. Negative pressure sealing solution

[0031] Vacuum sealing technology is used to create a negative pressure inside the outer shell to reduce the penetration of external air and moisture, while the interior is filled with a dry gas (such as nitrogen).

[0032] Suitable for devices that require long-term encapsulation, such as controllers for embedded navigation lights.

[0033] Disadvantage: Once the outer casing is damaged, the sealing effect may decrease rapidly.

[0034] 4. Nano-coating sealing solution

[0035] In recent years, some controllers have begun to adopt nano-coating technology to form an ultra-thin waterproof, moisture-proof, and corrosion-resistant coating on the surface of the circuit board.

[0036] Nano-coatings can penetrate into tiny gaps to form a molecular-level sealing and protective layer, effectively improving protective performance.

[0037] Suitable for controllers requiring lightweight design, but cannot provide complete airtightness.

[0038] Despite the various forms of sealing structures available for existing navigation light controllers, the following problems still exist:

[0039] Aging issues: When materials such as sealing rings and gaskets are exposed to the external environment for a long time, they may harden and shrink due to temperature changes, ultraviolet radiation, etc., leading to seal failure.

[0040] Structural loosening: Traditional mechanical seals rely on bolts or clamping structures, but these may loosen under prolonged vibration or temperature changes, thus affecting sealing performance.

[0041] Maintenance difficulties: Liquid sealing and welding sealing methods are difficult to disassemble and repair when they fail, increasing maintenance costs.

[0042] Limited environmental adaptability: Existing sealing structures still have shortcomings when facing extreme climates (such as low temperature, high temperature, high humidity, and highly corrosive environments), for example:

[0043] In cold environments, some sealing materials may become brittle, leading to seal failure;

[0044] In high humidity environments, moisture may penetrate into the sealed structure, causing damage to electrical components;

[0045] In highly corrosive environments (such as island airports), the metal casing may corrode due to prolonged exposure to salt spray, damaging the sealing structure.

[0046] Therefore, this utility model is proposed. Utility Model Content

[0047] The main purpose of this utility model is to disclose a sealing structure and its networked lamp controller, which solves the problems of poor sealing performance caused by aging, loose structure, difficult maintenance and limited environmental adaptability in the prior art.

[0048] To achieve the above objectives, this utility model provides a sealing structure and adopts the following technical solution:

[0049] A sealing structure includes an upper cover, a sealing ring, and a lower shell, wherein the upper cover and the lower shell are assembled together, a sealing ring is provided in the middle and fixed by a locking device, the upper cover and the lower shell are both made of engineering plastic or metal, and the surfaces of the upper cover and the lower shell are treated with processes to provide waterproof, dustproof and corrosion-resistant properties.

[0050] Furthermore, the sealing ring includes an inner sealing ring with three waterproof strips. The inner sealing ring is placed between the upper cover and the lower shell, and is deformed by the clamping force of the locking device, thereby filling the tiny gap between the upper cover and the lower shell to achieve a static seal.

[0051] Furthermore, the hardness of the inner sealing ring is 70 Shore A.

[0052] Furthermore, the sealing ring also includes an outer sealing ring, which is fitted over the outside of the lower shell. The locking device applies pressure to ensure a tight fit between the outer sealing ring and the upper and lower shells, thereby achieving dynamic waterproofing.

[0053] Furthermore, the hardness of the outer sealing ring is 50 Shore A.

[0054] Furthermore, the locking device consists of six screws evenly distributed around the circumference of the housing. The screws are secured by screw holes in the upper and lower covers.

[0055] According to another aspect of this utility model, a networked light controller is provided, and the following technical solution is adopted:

[0056] The network-connected lighting controller includes the aforementioned sealed structure.

[0057] This invention utilizes rubber rings added both inside and outside the lamp controller, with the structure and hardness of the rubber rings adapted to withstand a pressure of 137 kPa, equivalent to the environmental pressure of water at a depth of approximately 14 meters. This design effectively prevents the intrusion of moisture and dust, ensuring the normal operation of the equipment in harsh environments. Specifically, the inner sealing ring has three waterproof strips with appropriate hardness to guarantee that the overall structure is leak-proof. This optimized design allows the equipment to maintain good sealing performance even under long-term immersion conditions, greatly improving the reliability and stability of the equipment.

[0058] The sealing structure employs a dual-seal ring design. The inner seal ring handles static sealing, while the outer seal ring handles dynamic waterproofing. Their hardnesses are 70 Shore A (inner) and 50 Shore A (outer), respectively. This design ensures the seals maintain excellent sealing performance under various environmental conditions, effectively preventing seal failure caused by temperature changes, vibration, and other factors. Simultaneously, the evenly distributed pressure layout of the fastening screws—six screws evenly distributed along the circumference of the housing—ensures uniform pressure on the seals, preventing localized deformation and failure. This evenly distributed pressure layout not only improves the sealing effect but also enhances the structural strength and stability of the equipment, extending its service life.

[0059] The cross-section of the waterproof strip has been optimized to a trapezoidal shape, enhancing the resilience of the sealing ring. This design allows the sealing ring to maintain good sealing performance even under shell deformation caused by temperature changes. The trapezoidal cross-section of the waterproof strip effectively adapts to minor deformations of the shell, ensuring tight contact between the sealing ring and the shell, further improving the sealing performance and reliability of the equipment.

[0060] Through the aforementioned optimized design, the sealing structure not only improves the equipment's protection level but also significantly enhances its overall performance and reliability. Even in harsh environments, the equipment can operate stably, unaffected by moisture, dust, and corrosive gases. This not only extends the equipment's lifespan but also reduces maintenance costs and replacement frequency, bringing significant economic benefits to users.

[0061] The sealing structure exhibits excellent environmental adaptability, maintaining stable sealing performance under various extreme climatic conditions. In cold environments, the sealing rings will not fail due to brittleness; in high-humidity environments, moisture cannot penetrate the equipment's interior; and in highly corrosive environments, the sealing structure will not be damaged. This excellent environmental adaptability allows the equipment to be used in a wider range of applications, meeting the needs of diverse users.

[0062] Because the sealing structure of this invention has excellent sealing performance and durability, the probability of equipment failure during operation is greatly reduced, thereby reducing the frequency and cost of equipment maintenance. At the same time, the service life of the equipment is extended, the replacement frequency is reduced, and the economic efficiency of the equipment is further improved. For users, this not only reduces the cost of using the equipment but also improves its operating efficiency and reliability.

[0063] This invention features a rationally designed and aesthetically pleasing sealing structure that aligns with modern equipment design principles. Simultaneously, it significantly enhances the sealing performance and reliability of the equipment, making it more practical and reliable in real-world applications. This combination of aesthetics and practicality gives the equipment a stronger competitive edge in the market, satisfying users' dual demands for both appearance and performance. Attached Figure Description

[0064] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0065] Figure 1 This is a schematic diagram of the sealing structure described in an embodiment of the present utility model;

[0066] Figure 2This is a schematic diagram of another sealing structure described in an embodiment of the present utility model. Detailed Implementation

[0067] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0068] Figure 1 This is a schematic diagram of the sealing structure described in an embodiment of the present invention.

[0069] Figure 2 This is a schematic diagram of another sealing structure described in an embodiment of the present utility model.

[0070] See Figure 1-2 As shown, the sealing structure of this utility model mainly consists of an upper cover, a sealing ring, and a lower shell. The upper cover and lower shell are assembled together, with a sealing ring added in the middle, and fixed by a locking device. A detailed embodiment of the sealing structure is as follows... Figure 1 and Figure 2 As shown.

[0071] like Figure 1 As shown, the sealing structure mainly consists of an upper cover 1, a lower shell 2, an inner sealing ring 3, an outer sealing ring 4, and fastening screws 5. Figure 2 As shown, there are three waterproof strips 7 on both the front and back of the sealing ring, and a waterproof sealing strip 6 for the screw holes.

[0072] During installation, the upper cover 1 and the lower shell 2 are connected by an inner sealing ring 3. The upper cover 1 and the lower shell 2 are then tightened with fastening screws 5, pressing down the inner sealing ring 3 and deforming it to achieve a sealing effect. Then, the outer sealing ring 4 is inserted from the lower shell 2.

[0073] The sealing structure of this invention employs a dual-seal ring collaborative design, which is one of the core technologies of this invention. The inner and outer seal rings each perform different sealing tasks, working together to ensure the sealing performance of the equipment.

[0074] 1. Design of the inner sealing ring

[0075] The inner sealing ring is primarily responsible for static sealing, and its hardness is 70 Shore A. This hardness is chosen based on a comprehensive consideration of sealing performance and material elasticity. The 70 Shore A hardness allows the inner sealing ring to effectively deform under pressure, filling the tiny gaps between the upper and lower shells, thus achieving a seal under static conditions. The inner sealing ring has three waterproof strips, whose design further enhances the sealing effect. The waterproof strips have a trapezoidal cross-section, a design that effectively accommodates minor deformations of the shell, ensuring good sealing performance even under environmental factors such as temperature changes.

[0076] 2. Design of the outer sealing ring

[0077] The outer sealing ring is primarily responsible for dynamic waterproofing, with a hardness of 50 Shore A. This lower hardness gives the outer sealing ring better elasticity and flexibility, effectively preventing moisture intrusion under dynamic conditions. The outer sealing ring fits tightly around the lower housing, forming an effective waterproof barrier through a close fit with the upper and lower housings. This design not only prevents moisture from directly entering the equipment from the outside but also maintains good sealing performance when the equipment is subjected to vibration or impact.

[0078] 3. Advantages of Collaborative Work

[0079] The synergistic design of the inner and outer sealing rings ensures that the sealing structure of this invention maintains excellent sealing performance under both static and dynamic conditions. The high hardness and waterproof strip design of the inner sealing ring ensures the reliability of the static seal, while the low hardness and elasticity of the outer sealing ring guarantee the effectiveness of dynamic waterproofing. This dual-sealing-ring synergistic design not only improves sealing performance but also enhances the durability and reliability of the equipment.

[0080] The evenly distributed pressure layout of the fastening screws is another key technical feature of this invention. By evenly distributing six screws around the circumference of the housing, the pressure on the sealing ring is ensured to be uniform, avoiding localized deformation and failure.

[0081] 1. Design of the equalizing voltage layout

[0082] The pressure-equalizing layout design of the fastening screws is based on an in-depth analysis of the stress conditions on the sealing ring. In traditional sealing structures, uneven screw distribution can lead to uneven pressure on the sealing ring, resulting in excessive stress in localized areas, causing deformation or failure of the sealing ring. This invention, by evenly distributing six screws around the circumference of the housing, ensures that the sealing ring deforms uniformly under pressure, avoiding localized stress concentration.

[0083] 2. Advantages of equal pressure distribution layout

[0084] The pressure-equalizing layout design not only extends the service life of the sealing rings but also enhances the sealing performance of the equipment. By evenly distributing the screws, the sealing rings maintain good elasticity under pressure, thus ensuring a stable sealing effect in various environments. Furthermore, the pressure-equalizing layout improves the structural strength of the equipment, enabling it to better withstand the influence of external environments such as vibration and impact.

[0085] The optimized design of the waterproof strip cross-section is another key technical feature of this invention. By adopting a trapezoidal cross-section design, the resilience of the sealing ring is enhanced, enabling it to adapt to shell deformation caused by temperature changes.

[0086] 1. Design of trapezoidal cross section

[0087] The waterproof strip has a trapezoidal cross-section, which allows it to effectively deform under pressure, filling the tiny gaps between the upper and lower shells. The trapezoidal cross-section also allows the strip to quickly return to its original shape after being compressed, maintaining excellent sealing performance. This design not only improves the resilience of the sealing ring but also enhances its ability to adapt to environmental changes.

[0088] 2. Advantages of trapezoidal cross-sections

[0089] The trapezoidal cross-section design of the waterproof strip ensures that the sealing ring maintains good sealing performance despite environmental factors such as temperature changes. By optimizing the cross-sectional shape of the waterproof strip, the sealing structure of this invention can effectively adapt to minor deformations of the shell, ensuring a stable sealing effect in various environments. Furthermore, the trapezoidal cross-section design also improves the mechanical strength of the waterproof strip, enabling it to better withstand the influence of the external environment.

[0090] Alternative Solution 1: Double-layer sealing ring design

[0091] In addition to the dual-seal ring collaborative design used in this invention, a double-layer seal ring design can also be considered. This design adds an extra seal ring to the original design, further improving the sealing effect. Specifically, an additional seal ring can be added between the inner and outer seal rings, forming a three-layer sealing structure. This design effectively prevents the intrusion of moisture and dust, improving the protection level of the equipment. Furthermore, the double-layer seal ring design can also optimize sealing performance by using seal rings of different hardnesses. For example, the inner seal ring can be made of a high-hardness material, while the outer seal ring can be made of a low-hardness material, thus improving the sealing effect through a hardness gradient.

[0092] Alternative Solution 2: Labyrinth Sealing Structure

[0093] Another alternative is a labyrinth seal structure. This structure uses a complex labyrinthine channel design between the upper and lower covers, combined with sealing rings, to form multiple waterproof barriers. The labyrinth seal effectively prevents the intrusion of moisture and dust, improving the equipment's protective performance. Specifically, multiple winding channels can be designed at the joint between the upper and lower covers. These channels effectively lengthen the path for moisture and dust to enter the equipment, thus reducing the likelihood of intrusion. Furthermore, the labyrinth seal structure can be used in conjunction with sealing rings to further enhance the sealing effect. This design not only improves the equipment's sealing performance but also enhances its durability and reliability.

[0094] Alternative Option 3: Liquid sealant filling

[0095] In addition to the two alternatives mentioned above, liquid sealant filling can also be considered. This design enhances local sealing strength by filling the gap between the sealing ring and the housing with liquid sealant. Specifically, liquid sealant can be injected into the gap between the sealing ring and the housing, and after curing, it forms a robust sealing layer. This design effectively prevents moisture and dust from entering the equipment through the gaps, improving the equipment's sealing performance. Furthermore, the liquid sealant filling method can be combined with a double-ring design or a labyrinth seal structure to further enhance the sealing effect. This design not only improves the equipment's sealing performance but also enhances its durability and reliability.

[0096] Alternative Option 4: Application of New Sealing Materials

[0097] In addition to the aforementioned alternatives, new sealing materials can be considered. For example, self-healing sealing materials can be used, which automatically repair themselves when subjected to minor damage, thus maintaining good sealing performance. Specifically, a self-healing agent can be added to the sealing ring; when the sealing ring is slightly damaged, the self-healing agent can automatically fill the damaged area, restoring sealing performance. This design not only improves the sealing performance of the equipment but also enhances its durability and reliability. Furthermore, sealing materials with high elasticity and aging resistance can be used. These materials can maintain good elasticity and sealing performance during long-term use, effectively preventing seal failure due to material aging.

[0098] Alternative Option 5: Improved Fastening Screw Design

[0099] Another improvement is to adopt an improved fastening screw design. Specifically, self-locking screws can be used, which automatically lock after tightening to prevent loosening due to vibration or temperature changes. Alternatively, high-strength screws can be used, which have higher strength and corrosion resistance, maintaining good fastening performance even in harsh environments. By improving the design of the fastening screws, the sealing performance and reliability of the equipment can be further enhanced.

[0100] Alternative Option Six: Optimized Waterproof Strip Design

[0101] In addition to the aforementioned alternatives, optimizing the design of the waterproof strip can be considered. Specifically, a multi-layered waterproof strip design can be adopted, increasing the number and thickness of the strips to improve the sealing effect. Furthermore, waterproof strips of different shapes can be used, such as wavy or serrated strips, which can better adapt to minor deformations of the housing and maintain good sealing performance. By optimizing the waterproof strip design, the sealing performance and reliability of the equipment can be further improved.

[0102] Alternative Solution 7: Optimization of the Overall Sealing Structure

[0103] Another improvement option is to optimize the overall sealing structure. Specifically, an integrated sealing design can be adopted, forming the upper cover and lower shell into a single unit through injection molding or die casting, thereby improving sealing performance. Alternatively, a fully enclosed design can be used, sealing all interfaces and gaps in the equipment to effectively prevent the intrusion of moisture and dust. By optimizing the overall sealing structure, the sealing performance and reliability of the equipment can be further improved.

[0104] The above description only illustrates certain exemplary embodiments of this invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of this invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of this invention.

Claims

1. A sealing structure, characterized in that, The device includes an upper cover, a sealing ring, and a lower shell. The upper cover and lower shell are assembled together, with a sealing ring in the middle, and are fixed by a locking device. Both the upper cover and lower shell are made of engineering plastic or metal, and their surfaces are treated with waterproof, dustproof, and corrosion-resistant processes. The sealing ring adopts a double-seal ring collaborative design, with the inner and outer sealing rings having different hardness. The inner sealing ring deforms under pressure to fill the tiny gap between the upper cover and lower shell, achieving a seal under static conditions. The outer sealing ring is fitted over the lower shell and, through its tight fit with the upper cover and lower shell, can prevent moisture intrusion under dynamic conditions.

2. The sealing structure according to claim 1, characterized in that, The inner sealing ring has three waterproof strips. The inner sealing ring is placed between the upper cover and the lower shell. It is deformed by the clamping force of the locking device, thereby filling the tiny gap between the upper cover and the lower shell and achieving a static seal.

3. The sealing structure according to claim 2, characterized in that, The hardness of the inner sealing ring is 70 Shore A.

4. The sealing structure according to claim 3, characterized in that, The outer sealing ring, through the clamping force of the locking device, is made to fit tightly with the upper cover and the lower shell, thereby achieving dynamic waterproofing.

5. The sealing structure according to claim 4, characterized in that, The hardness of the outer sealing ring is 50 Shore A.

6. The sealing structure according to claim 5, characterized in that, The locking device consists of six screws, evenly distributed around the circumference of the housing. The screws are secured by screw holes in the upper and lower covers.

7. A networked light controller, characterized in that, Includes the sealing structure described in any one of claims 1-6.

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