Waterproof socket

Abstract

The invention discloses a waterproof socket, which comprises a shell provided with jacks, a socket module is arranged in the shell, the socket module comprises a base, a movable and static contact piece assembly is arranged in the base, and the movable and static contact piece assembly comprises a static contact piece, a movable contact piece and an ejector rod sealing assembly. The static contact piece is fixed in the base, one end of the movable contact piece is fixed, the other end of the movable contact piece is free, a conductive contact is arranged at the free end of the movable contact piece, the ejector rod sealing assembly comprises an ejector rod arranged in the center, a sealing piece is arranged outside the ejector rod, the periphery of the sealing piece is matched with the base in a sealing mode, and the static contact piece is fixed in the base. And the push rod is abutted against and matched with the middle part of the movable contact piece. The invention has the advantages that: the structure is reasonable, the waterproof performance can be improved, and the inter-electrode electrical insulation strength is improved.

Description

Technical Field

[0001] The invention relates to the technical field of socket manufacturing, in particular to a waterproof socket. Background Art

[0002] Waterproofing of national standard sockets has always been a major problem that needs to be solved urgently. The waterproof structure of existing sockets mostly uses rubber seals, such as the waterproof structure disclosed in the patent application with application number CN202320981502.1 and the name "Waterproof Socket". The waterproof socket includes a shell and a waterproof part. The shell is provided with an inner cavity and a socket for inserting a plug, and a circuit structure is provided in the inner cavity; the waterproof part is arranged on the shell, and the waterproof part includes a first waterproof part, which is protruded from the outside of the shell corresponding to the position of the socket, wherein the first waterproof part is constructed into a soft elastic structure, and the first waterproof part is provided with a first notch connected to the socket. The plug can pass through the first notch and the socket in sequence and be inserted into the inner cavity to form a circuit connection with the circuit structure. The first waterproof part can be deformed under the action of the plug to seal the socket.

[0003] However, the rectangular cross-section of the plug makes the rubber seal ineffective, especially for IP5 and above ratings. This inability to completely isolate water and electricity can create safety hazards. In line with the new national standard, the plug structure has been upgraded for safety, with an insulating sheet covering the upper edge of the plug. This structural upgrade makes it possible to improve the waterproof performance of sockets and plugs. Summary of the Invention

[0004] The purpose of the present invention is to make up for the above-mentioned deficiencies and disclose to the public a waterproof socket with a reasonable structure and the ability to effectively improve waterproof performance.

[0005] The technical solution of the present invention is achieved as follows: A waterproof socket comprises a shell provided with a socket, a socket module provided in the shell, the socket module comprising a base, a movable and static contact assembly provided in the base, the movable and static contact assembly comprising a static contact, a movable contact and a top rod sealing assembly, the static contact being fixed in the base, the movable contact being fixed at one end and free at the other end, the free end of the movable contact being provided with a conductive contact, the top rod sealing assembly comprising a top rod provided in the center, a sealing member being provided outside the top rod, the outer periphery of the sealing member being sealed in cooperation with the base, and the top rod being abutted against the middle portion of the movable contact.

[0006] The measures to further optimize this technical solution are: As an improvement, the base is equipped with a mounting plate for mounting the safety door. A sealing gasket assembly is positioned between the mounting plate and the base. The sealing gasket assembly comprises multiple layers of gaskets made of at least two different materials. A through-hole is provided in the gasket assembly directly opposite the insertion hole. This gasket assembly, composed of gaskets of different materials, utilizes the physical properties of different materials (some materials are wear-resistant but lack elasticity, while others are elastic but lack wear-resistance) to improve the overall sealing and durability of the gasket assembly.

[0007] As an improvement, the sealing gasket assembly is provided with an air passage, and the mounting plate is provided with a breathing hole. The breathing hole is connected to the inner cavity of the base through the air passage, and a one-way diaphragm is provided in the air passage. The air passage can be used to exhaust air when the plug is inserted, making insertion smoother. At the same time, it prevents harmful external water from entering the internal charged cavity through the air passage, thereby improving electrical insulation strength. Even if water is present in the air passage, the air passage is designed to be maze-shaped, lengthening the channel length, utilizing the inherent resistance of water to reduce voltage. In addition, when the one-way diaphragm is closed, the electrical insulation strength can be further improved.

[0008] As an improvement, the sealing gasket has a protrusion on one side and a groove on the other side, and the protrusions of adjacent layers of sealing gaskets fit into the grooves. The fit between the protrusions and grooves of adjacent layers of sealing gaskets makes the assembly of the sealing gasket assembly tighter, which is conducive to improving the sealing performance.

[0009] As an improvement, an air groove is vertically opened on the inner wall of the sealing member. The provision of the air groove allows air to be effectively discharged when the ejector moves, thereby preventing the ejector from being sucked by the sealing member under atmospheric pressure and affecting its movement.

[0010] As an improvement, a safety door is mounted on the mounting plate. An elastic rubberized portion is provided in the middle of the safety door. Mounting heads are provided at both ends of the elastic rubberized portion, which mate with the mounting plate. Grease retention holes are also provided in the elastic rubberized portion. The elastic rubberized portion physically isolates the neutral and live wires, enhancing the electrical isolation between them. Grease in the grease retention holes also improves the smooth movement of the safety door.

[0011] As an improvement, the movable contact piece and the socket are fixed by rivets, and a glue injection groove is provided at the end of the rivet. The riveted structure improves the reliability of the electrical connection, and glue is injected into the glue injection groove to improve the sealing.

[0012] As an improvement, the socket module is equipped with a humidity sensor and a heater. The humidity sensor and heater are connected for signal control, and the heater is connected in series with a thermostat to prevent the heater from overheating. A humidity sensor is installed inside the socket module to control whether the heater is turned on or off. The heater is connected in series with a thermostat. When the heater exceeds a set temperature, the thermostat activates the protection module. The humidity sensor detects the humidity value within the module. When the detected value exceeds the set value, the heater is activated to heat the module, increasing the temperature to accelerate the evaporation of harmful water, which is then discharged to the outside to improve electrical insulation strength.

[0013] As an improvement, the socket module is further provided with a moisture indicator box, and a moisture-discoloring agent is provided in the moisture indicator box.

[0014] As an improvement, the base has a sealing ring on its outer periphery, and a grounding electrode sealing ring is also provided on the base around the grounding electrode. The grounding electrode sealing ring is provided to isolate the ground wire from the neutral and live wires, thereby improving the electrical insulation strength between the electrodes.

[0015] The advantages of the present invention compared with the prior art are: A waterproof socket of the present invention has a reasonable structure. A dynamic and static contact assembly is provided in the base of the socket module. The dynamic and static contact assembly includes a static contact, a dynamic contact and a push rod sealing assembly. The push rod sealing assembly includes a push rod and a seal. When a plug is inserted into the socket of the socket module, the plug pushes the push rod to move, so that the push rod pushes the conductive contact on the dynamic contact to contact the static contact to achieve conductivity. This waterproof socket structure can improve the waterproof performance of the socket and improve the electrical insulation strength between each pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention with the back cover removed; Figure 3 It is a three-dimensional structural diagram of the socket module of the present invention; Figure 4 yes Figure 3 Cross-sectional structural diagram of the middle push rod sealing assembly; Figure 5 yes Figure 3 Exploded view of the middle push rod seal assembly; Figure 6 yes Figure 3 Schematic diagram of the structure of the dynamic and static contact assembly; Figure 7 yes Figure 3 A cross-sectional structural diagram of the middle gasket assembly; Figure 8 yes Figure 3 Schematic diagram of the structure of the middle gas channel and the one-way diaphragm; Figure 9 is a three-dimensional structural diagram of the socket module of the present invention from another perspective; Figure 10 yes Figure 9 Schematic diagram of the structure after removing the safety door; Figure 11 It is a schematic diagram of the assembly structure of the sealing gasket assembly and the base of the present invention.

[0017] The names of the reference numerals in the accompanying drawings of the present invention are: Housing 1, jack 1a, base 2, static contact piece 31, moving contact piece 32, conductive contact 32a, ejector pin sealing assembly 33, ejector pin 33a, seal 33b, air groove 33c, safety door 4, elastic rubberized portion 41, assembly head 41a, grease retention hole 41b, mounting plate 5, breathing hole 5a, sealing gasket assembly 6, through-hole 6a, air passage 6b, one-way diaphragm 6c, sealing gasket 61, protrusion 61a, groove 61b, socket 7, rivet 71, glue injection groove 71a, humidity sensor 81, heater 82, thermostat 83, moisture indicator box 84, sealing ring 91, grounding electrode sealing ring 92. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below with reference to the accompanying drawings: The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0019] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate directions or positions are based on the directions or positional relationships shown in the accompanying drawings, which are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limiting the present invention.

[0020] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0021] like Figures 1 to 11 As shown, a waterproof socket includes a shell 1 provided with a socket 1a, a socket module is provided in the shell 1, and the socket module includes a base 2. A dynamic and static contact assembly is provided in the base 2, and the dynamic and static contact assembly includes a static contact 31, a dynamic contact 32 and a top rod sealing assembly 33. The static contact 31 is fixed in the base 2, the dynamic contact 32 is fixed at one end and free at the other end, and a conductive contact 32a is provided at the free end of the dynamic contact 32. The top rod sealing assembly 33 includes a top rod 33a provided in the center, and a sealing member 33b is provided outside the top rod 33a. The outer periphery of the sealing member 33b is sealed with the base 2, and the top rod 33a is abutted against the middle part of the dynamic contact 32.

[0022] In this embodiment, the conductive contacts 32a are silver contacts. When the plug is inserted into the socket 7 of the socket module, the plug pushes the push rod 33a to move, so that the push rod 33a pushes the conductive contacts 32a on the movable contact piece 32 to contact the static contact piece 31 to achieve conduction.

[0023] A mounting plate 5 for mounting the safety door 4 is provided in the base 2, and a sealing gasket assembly 6 is provided between the mounting plate 5 and the base 2. The sealing gasket assembly 6 is composed of several layers of sealing gaskets 61, and the several layers of sealing gaskets 61 include at least two different materials. A through hole 6a is provided on the sealing gasket assembly 6 opposite the socket 1a (the through hole 6a is used for the passage of the pin).

[0024] The sealing gasket assembly 6 is provided with an air passage 6b (such as Figure 7 As shown in the figure, the arrow indicates the direction of gas flow. The mounting plate 5 is provided with a breathing hole 5a. The breathing hole 5a is connected to the inner cavity of the base 2 through an air passage 6b. A one-way diaphragm 6c is provided in the air passage 6b. The one-way diaphragm 6c can only be opened in one direction.

[0025] One side surface of the sealing gasket 61 is provided with a protrusion 61 a , and the other side surface thereof is provided with a groove 61 b ​​. The protrusions 61 a and the grooves 61 b ​​of the sealing gaskets 61 of adjacent layers are embedded and matched.

[0026] In this embodiment, four layers of sealing gaskets 61 are provided. The two outer layers are made of wear-resistant rubber, and the two inner layers are made of highly elastic rubber. The combination of materials with different elasticities and shrinkage can improve the sealing performance of the sealing gasket assembly 6. The mating of the protrusions 61a and grooves 61b between adjacent layers of sealing gaskets 61 can increase the bonding force between the sealing gaskets 61, thereby improving the sealing performance of the sealing gasket assembly 6.

[0027] Gasket assembly 6 is provided with an air passage 6b. When a plug is inserted, gasket 61 deforms slightly, allowing air between gaskets 61 and within socket 7 to escape through air passage 6b and out of breathing hole 5a on mounting plate 5, ensuring smooth insertion. Furthermore, if water enters the socket chamber, air passage 6b increases the surface area, facilitating the evaporation of harmful water. Furthermore, air passage 6b increases the flow path length, utilizing the resistance of the water itself to reduce voltage and leakage current, thereby enhancing socket safety.

[0028] The inner wall of the seal 33b is provided with a vertical air groove 33c. When the plug is inserted, relative movement occurs between the push rod 33a and the seal 33b. The air groove 33c on the inner wall of the seal 33b effectively removes air, preventing atmospheric pressure from causing the push rod 33a and the seal 33b to become stuck and affecting the movement of the push rod 33a.

[0029] The safety door 4 is mounted on the mounting plate 5. An elastic rubberized portion 41 is positioned in the middle of the safety door 4. Mounting heads 41a are provided at each end of the elastic rubberized portion 41, which mate with the mounting plate 5. Grease retention holes 41b are also provided in the elastic rubberized portion 41. The safety door 4 is conventional, and its operating principle will not be elaborated on here. The elastic rubberized portion 41 in the middle of the safety door 4 improves the airtightness between the neutral and live wires. Grease is injected through the grease retention holes 41b, enhancing the smooth movement of the safety door 4.

[0030] The safety door 4 is a prior art. The safety door 4 and the elastic rubber-coated part 41 form a combination. Under the action of the spring, the socket is blocked. When the plug is inserted and hits the combination, the combination (safety door 4 and elastic rubber-coated part 41) slides to one side, allowing the plug to be inserted.

[0031] The movable contact piece 32 is fixed to the socket 7 by riveting with a rivet 71, and a glue injection groove 71a is provided at the end of the rivet 71. The riveting structure improves the reliability of the electrical connection, and the glue injection groove 71 improves the sealing performance.

[0032] The socket module is equipped with a humidity sensor 81 and a heater 82, which are connected by signal control. A thermostat 83 is connected in series with the heater 82 to prevent it from overheating. The humidity sensor 81 detects the humidity inside the socket. When the detected value exceeds a set value, the heater 82 is activated to heat and reduce the humidity. The thermostat 83 monitors the heater's temperature to prevent overheating and shortening its service life. Heater 82 is preferably a heating film, which takes up little space.

[0033] The socket module is also provided with a moisture indicator box 84, which contains a moisture-discoloring agent. In this embodiment, the agent is a mixture of phenolphthalein and sodium carbonate. When wet, the agent turns red to remind the user that the socket is wet.

[0034] The outer periphery of the base 2 is provided with a sealing ring 91, and the outer periphery of the ground electrode is further provided with a ground electrode sealing ring 92 on the base 2. The ground electrode sealing ring 92 is provided to isolate the ground wire from the neutral and live wires.

[0035] The housing 1 is formed by fixing a front housing and a rear cover. The rear cover is made of a transparent material or a semi-transparent material to facilitate observation of the discoloration of the medicine in the moisture indicator box 84.

[0036] The above are only preferred embodiments of the present invention and do not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof socket, comprising a housing (1) provided with a socket (1a), wherein a socket module is provided in the housing (1), wherein: The socket module includes a base (2), a dynamic and static contact assembly is arranged in the base (2), and the dynamic and static contact assembly includes a static contact (31), a dynamic contact (32) and a top rod sealing assembly (33), the static contact (31) is fixed in the base (2), one end of the dynamic contact (32) is fixed and the other end is free, and the free end of the dynamic contact (32) is provided with a conductive contact (32a), the top rod sealing assembly (33) includes a top rod (33a) arranged in the center, a sealing member (33b) is arranged outside the top rod (33a), the outer periphery of the sealing member (33b) is sealed with the base (2), the top rod (33a) is abutted against the middle part of the dynamic contact (32), and the top rod (33a) is arranged opposite to the socket (7).

2. The waterproof socket according to claim 1, wherein: A mounting plate (5) for mounting the safety door (4) is provided in the base (2), a sealing gasket assembly (6) is provided between the mounting plate (5) and the base (2), the sealing gasket assembly (6) is composed of a plurality of layers of sealing gaskets (61), the plurality of layers of sealing gaskets (61) comprising at least two different materials, and a through hole (6a) is provided on the sealing gasket assembly (6) at a position facing the insertion hole (1a).

3. The waterproof socket according to claim 2, characterized in that: The sealing gasket assembly (6) is provided with an air passage (6b), the mounting plate (5) is provided with a breathing hole (5a), the breathing hole (5a) is communicated with the inner cavity of the base (2) through the air passage (6b), and a one-way diaphragm (6c) is provided in the air passage (6b).

4. The waterproof socket according to claim 3, wherein: One side surface of the sealing gasket (61) is provided with a protrusion (61a), and the other side surface thereof is provided with a groove (61b), and the protrusions (61a) and the grooves (61b) of the adjacent layers of sealing gaskets (61) are embedded and matched.

5. The waterproof socket according to claim 4, characterized in that: An air groove (33c) is vertically provided on the inner wall of the sealing member (33b).

6. The waterproof socket according to claim 5, characterized in that: The mounting plate (5) is equipped with a safety door (4), the middle portion of the safety door (4) is provided with an elastic rubber-coated portion (41), both ends of the elastic rubber-coated portion (41) are provided with assembly heads (41a) adapted to the mounting plate (5), and the elastic rubber-coated portion (41) is provided with a grease retention hole (41b).

7. The waterproof socket according to claim 6, characterized in that: The movable contact piece (32) and the insert sleeve (7) are fixed by riveting with a rivet (71), and a glue injection groove (71a) is provided at the end of the rivet (71).

8. The waterproof socket according to claim 7, characterized in that: The socket module is provided with a humidity sensor (81) and a heater (82), the humidity sensor (81) and the heater (82) are connected for signal control, and the heater (82) is connected in series with a thermostat (83) for preventing the heater (82) from overheating.

9. The waterproof socket according to claim 8, characterized in that: The socket module is also provided with a moisture indicator box (84), and a moisture indicator box (84) is provided with a medicine that changes color when it is damp.

10. The waterproof socket according to claim 9, characterized in that: The outer periphery of the base (2) is provided with a sealing ring (91), and the outer periphery of the grounding electrode on the base (2) is also provided with a grounding electrode sealing ring (92).

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