Socket based on anti-arc interference function

Abstract

The utility model discloses a socket based on anti -electric arc anti -interference function relates to electrical socket technical field, aims at solving the problem that the existing socket electric arc is easy to overflow from the jack. It includes front end cover, rear end cover, and the front end cover card decoration frame and is equipped with telescopic hole, and the rear end cover is equipped with spring leaf and wiring assembly corresponding with the jack, and the front and rear end cover are all shielding material, still include telescopic block, its rear end is equipped with accommodating groove, and is sleeved in telescopic hole, and the jack is opened in telescopic block and is connected with accommodating groove, and the accommodating groove front end is equipped with the locating rod, and the rear end is opened guide groove, and the guide post is sleeved into guide groove and is connected with rear end cover through connecting assembly in the rear end, and the front end cover is equipped with limiting component. When using, rotate telescopic block to make the jack align with spring leaf, press the forward sealing gap, cooperate metal grid piece double -faced anti -electric arc overflow, keep anti -interference performance simultaneously, convenient operation, effectively promote socket use security and durability.

Description

Technical Field

[0001] This utility model relates to the field of electrical socket technology, and in particular to a socket based on anti-arc interference function. Background Technology

[0002] With the widespread adoption of power systems and the diversification of electrical equipment, sockets, as key interfaces for power transmission, have seen their arc-proof performance and anti-interference capabilities become core indicators for evaluating product safety. Currently, to improve socket safety, the industry has gradually adopted metal grid arc-proof structures and anti-interference shell designs, forming a basic safety protection system. The metal grid suppresses arc generation during the contact or separation of the plug and socket contacts by physically dividing the arc and rapidly dissipating its energy, reducing arc erosion of the contacts. The anti-interference shell is often made of plastic with an added conductive shielding layer, effectively shielding the electromagnetic radiation generated by the socket's internal circuitry, preventing signal interference to surrounding precision electronic equipment (such as smart home controllers and medical monitoring instruments), and reducing the impact of the external electromagnetic environment on the stability of the socket's own circuitry.

[0003] However, existing technical solutions still have key safety hazards. The core issue lies in the limited effectiveness of the metal grid in preventing electric arc, which cannot completely eliminate the risk of arc leakage. Specifically, during the dynamic process of plugging and unplugging, electric arcs can easily escape from the socket holes through air gaps, causing burns, electric shocks, and other injuries to users. The technical defects are mainly reflected in the following three aspects:

[0004] First, the arc-extinguishing mechanism of metal grids has inherent limitations. Metal grids rely on dividing the electric arc into multiple short arcs and utilizing the near-cathode effect to extinguish the arc. However, when the current fluctuates greatly during insertion and removal (such as when inserting or removing a 16A / 250V high-power household appliance), the arc energy will rise sharply. If it exceeds the energy carrying capacity threshold of the metal grid, some of the arc that is not completely divided will break through the grid barrier and spread outward along the gap in the socket using air as a medium, forming visible arc light accompanied by high-temperature plasma jets.

[0005] Secondly, the structural design contains air gaps. In existing sockets, the metal grid is often fixedly installed around the spring contacts, while the socket, as the channel for the plug to enter and exit, requires a certain physical opening, inevitably resulting in an air gap between the grid and the socket. When the arc generation speed exceeds the arc extinguishing response speed of the grid, the arc will overflow directly from the socket through this gap. This is especially true at the moment the plug is pulled out, when the elongated arc generated by the contact separation is more likely to leak out along the air path.

[0006] Thirdly, there is the risk of accelerated performance degradation due to long-term use. After repeated arc erosion, the surface of the metal grid will gradually form an oxide layer and pits, reducing its thermal conductivity and arc blocking ability. At the same time, the gap between the grid and the socket housing may increase due to thermal expansion and contraction of the materials, further expanding the air leakage channel. While the anti-interference housing can solve the electromagnetic radiation problem, it cannot physically block the arc and cannot compensate for the arc protection deficiency of the metal grid.

[0007] Currently, while some sockets on the market use protective shutters to assist in arc protection, the primary function of these shutters is to prevent the accidental insertion of foreign objects. Their mechanical reset speed is difficult to match the speed at which an arc is generated, and they still cannot completely block the path of the arc escaping through the air gap. Therefore, designing a structure that effectively prevents arcs from escaping through the socket's air gap, based on existing metal grid arc protection and anti-interference housings, to achieve dual arc protection, has become a key technical requirement for improving socket safety and a pressing technical challenge that needs to be addressed in this field. Utility Model Content

[0008] To solve the above-mentioned technical problems, this utility model provides a socket based on anti-arc interference function that can be used with metal grids to prevent arc overflow and improve the safety of socket use.

[0009] This utility model discloses a socket with anti-arc and anti-interference functions, including a front cover with a decorative frame attached to it, a rear cover at the rear of the front cover, a socket on the front cover, and a number of spring contacts corresponding to the sockets at the front of the rear cover. Metal grids are provided adjacent to the live wire and neutral wire spring contacts. A wiring assembly electrically connected to the spring contacts is located at the rear of the rear cover. Both the front and rear covers are made of shielding material.

[0010] It also includes a telescopic block, the rear end of which is provided with a receiving groove. The front end of the front cover is provided with a telescopic hole extending from front to back. The telescopic hole and the telescopic block are slidably fitted together. The insertion hole is opened on the telescopic block and communicates with the receiving groove. The front end of the receiving groove is coaxially provided with a positioning rod. The rear end of the positioning rod is provided with a guide groove. A guide post is slidably fitted in the guide groove. The rear end of the guide post is connected to the middle of the front end of the rear end cover through a connecting component. The front end cover is provided with a limiting component that limits the initial position of the telescopic block.

[0011] Furthermore, the limiting component includes a slide rail, which is installed at the rear end of the front cover and is close to the telescopic block and its shape is adapted to the outer side wall of the telescopic block. A sliding outlet is provided through one side of the slide rail from front to back. A slider is provided on the side wall of the telescopic block and is slidably engaged with the slide rail. The connecting component includes a rotating shaft, one end of which is rotatably connected to the middle of the front end of the rear cover, and the other end of which is concentrically connected to the guide post. The guide post is set as a polygonal prism, and the guide groove is set as a polygonal groove adapted to the guide post. When the telescopic block is rotated so that the insertion hole and the spring are aligned, the slider and the sliding outlet are aligned.

[0012] Furthermore, an elastic card is provided at the front end of the receiving groove near the insertion hole, and a compression ball is provided on the side of the elastic card facing the insertion hole.

[0013] Furthermore, a coil spring is fitted onto the rotating shaft, with one end of the coil spring connected to the rear end cover and the other end connected to the rotating shaft.

[0014] Furthermore, auxiliary guide rods are provided on both sides of the rear end of the slide rail at the slide outlet.

[0015] Furthermore, the slider is configured to be cylindrical.

[0016] Furthermore, the area at the front end of the slide rail near the slide outlet is configured as a slope extending towards the slide outlet.

[0017] Furthermore, the front end of the telescopic block is provided with an annular groove, a sealing ring is provided in the annular groove, and the insertion hole is located in the sealing ring.

[0018] Furthermore, the number of sockets is set to two or three.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. Preventing arc leakage: By wrapping the spring sheet with a telescopic block and adding a metal grid, the path of arc leakage is blocked, eliminating the risk of burns and electric shocks during insertion and removal.

[0021] 2. Precise alignment: The slider and slide rail are mechanically limited, and the spring is aligned when the plug is rotated and tightened, avoiding damage to components caused by blind insertion deviation.

[0022] 3. Automatic Reset: The elastic card and coil spring enable step-by-step automatic reset, eliminating the need for manual adjustment and conforming to conventional usage habits.

[0023] 4. Prevents accidental contact: When not in use, the coil spring causes the socket and the spring to misalign, forming a self-locking mechanism and reducing the risk of electric shock from foreign object insertion.

[0024] 5. Anti-interference and stability: The front and rear end covers retain the shielding material, and the added structure does not affect the anti-interference performance, avoiding interference with surrounding equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the rear end cover of this utility model;

[0027] Figure 3 This is a schematic diagram of the connection structure between the front cover and the slide rail of this utility model;

[0028] Figure 4 This is a schematic diagram of the connection structure between the telescopic block and the elastic card of this utility model;

[0029] Figure 5 This is a schematic diagram of the connection structure between the rotating shaft and the coil spring of this utility model;

[0030] The following are labels in the attached diagram: 1. Front cover; 2. Frame; 3. Rear cover; 4. Insertion hole; 5. Spring; 6. Metal grid; 7. Telescopic block; 8. Positioning rod; 9. Guide post; 10. Slide rail; 11. Slide outlet; 12. Slider; 13. Rotating shaft; 14. Elastic clip; 15. Coil spring; 16. Auxiliary guide rod; 17. Slope; 18. Sealing ring. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0032] like Figures 1 to 5 As shown, the socket based on anti-arc interference function of this utility model includes a front cover 1, a decorative frame 2 attached to the front cover 1, a rear cover 3 at the rear end of the front cover 1, a socket 4 on the front cover 1, and a number of springs 5 ​​corresponding to the socket 4 at the front end of the rear cover 3. Metal grids 6 are provided adjacent to both the live wire spring 5 and the neutral wire spring 5. A wiring assembly electrically connected to the springs 5 ​​is provided at the rear end of the rear cover 3. Both the front cover 1 and the rear cover 3 are made of shielding material.

[0033] It also includes a telescopic block 7, the rear end of which is provided with a receiving groove. The front end of the front cover 1 is provided with a telescopic hole extending from front to back. The telescopic hole is slidably fitted with the telescopic block 7. The insertion hole 4 is opened on the telescopic block 7 and communicates with the receiving groove. The front end of the receiving groove is coaxially provided with a positioning rod 8. The rear end of the positioning rod 8 is provided with a guide groove. A guide post 9 is slidably fitted in the guide groove. The rear end of the guide post 9 is connected to the middle of the front end of the rear end cover 3 through a connecting component. The front end cover 1 is provided with a limiting component that limits the initial position of the telescopic block 7.

[0034] In this embodiment, the metal grid 6 can play a preliminary role in preventing electric arc, and the shielding materials used in the front cover 1 and the rear cover 3 can play an anti-interference role. In addition, in order to cooperate with the anti-electric arc function, according to actual needs, the shielding materials of the front cover 1 and the rear cover 3 should also have the effects of high temperature resistance and flame retardancy. For example, flame retardant reinforced polyhexamethylene adipamide plus nickel-plated stainless steel fiber composite material can be selected.

[0035] The telescopic block 7 can be telescopically moved in cooperation with the positioning rod 8 and the guide post 9. This allows the plug to be fully inserted into the telescopic block 7 first, and then the telescopic block 7 is pushed to insert the plug into the socket. In this structure, the telescopic block 7 is equivalent to a protective shield, blocking the gap of arc overflow. With the cooperation of the telescopic block 7 and the metal grid plate 6, the arc prevention effect is greatly improved.

[0036] As a preferred embodiment of the above embodiment, the limiting component includes a slide rail 10, which is installed at the rear end of the front end cover 1. The slide rail 10 is close to the telescopic block 7 and its shape is adapted to the outer side wall of the telescopic block 7. A sliding outlet 11 is provided through one side of the slide rail 10 from front to back. A slider 12 is provided on the side wall of the telescopic block 7. The slider 12 is slidably engaged with the slide rail 10. The connecting component includes a rotating shaft 13. One end of the rotating shaft 13 is rotatably connected to the middle of the front end of the rear end cover 3, and the other end is concentrically connected to the guide post 9. The guide post 9 is set as a polygonal prism, and the guide groove is set as a polygonal groove adapted to the guide post 9. When the telescopic block 7 is rotated so that the insertion hole 4 and the spring 5 are aligned, the slider 12 and the sliding outlet 11 are aligned.

[0037] In this embodiment, the limiting mechanism of the slide rail 10 and the slider 12 makes the rotation of the telescopic block 7 very convenient and reliable. Moreover, the combination of the polygonal prism and the polygonal groove enables the positioning rod 8 and the guide post 9 to reliably support and limit the telescopic block 7 and support it as the telescopic block 7 rotates. This structure is convenient to operate and has reliable limiting.

[0038] As a preferred embodiment of the above embodiment, an elastic card 14 is provided at the front end of the receiving groove near the insertion hole 4, and a compression ball is provided on the side of the elastic card 14 facing the insertion hole 4.

[0039] In this embodiment, after the plug is inserted into the socket 4 of the telescopic block 7, the plug will squeeze the compression ball on the elastic card 14. During the process of the plug being pulled out, under the friction between the compression ball and the plug, the plug will drive the telescopic block 7 to the reset state. This design realizes the automatic reset of the telescopic block 7 and improves the convenience of using the socket.

[0040] As a preferred embodiment of the above embodiment, a coil spring 15 is sleeved on the rotating shaft 13, one end of the coil spring 15 is connected to the rear end cover 3, and the other end is connected to the rotating shaft 13.

[0041] In this embodiment, the coil spring 15 provides the resetting rotational force for the telescopic block 7 through the rotating shaft 13, the guide post 9 and the positioning rod 8. After the telescopic block 7 is reset by the plug, the plug is pulled out, and the coil spring 15 will push the telescopic block 7 to rotate and reset. This reset process improves the ease of use of the socket.

[0042] As a preferred embodiment of the above embodiment, the rear end of the slide rail 10 is provided with auxiliary guide rods 16 on both sides of the slide outlet 11.

[0043] In this embodiment, the auxiliary guide rod 16 serves to prevent the slider 12 from rotating during the insertion displacement process of the telescopic block 7 while it slides out along the slide outlet 11. This makes the insertion and fitting of the plug and the spring 5 more precise. At the same time, when the telescopic block 7 is reset, the auxiliary guide rod 16 allows the slider 12 to enter the slide rail 10 accurately and smoothly through the slide outlet 11, thus improving reliability.

[0044] As a preferred embodiment of the above, the slider 12 is cylindrical;

[0045] In this embodiment, the cylindrical slider 12 can greatly reduce the friction between the slider 12 and the slide rail 10. According to actual needs and cost requirements, the cylindrical slider 12 can be processed into a rotating connection structure on the side wall of the telescopic block 7, which can further reduce the sliding resistance and make the resetting of the telescopic block 7 smoother.

[0046] As a preferred embodiment of the above embodiment, the area of ​​the front end of the slide rail 10 near the slide outlet 11 is configured as a slope 17 extending toward the slide outlet 11;

[0047] In this embodiment, a slope 17 is provided at the slide outlet 11 of the slide rail 10, which further improves the convenience and smoothness of resetting the telescopic block 7.

[0048] As a preferred embodiment of the above, the front end of the telescopic block 7 is provided with an annular groove, a sealing ring 18 is provided in the annular groove, and the insertion hole 4 is located in the sealing ring 18.

[0049] In this embodiment, a sealing ring 18 is provided at the front end of the telescopic block 7. After the plug is fully inserted into the socket 4 of the telescopic block 7, the plug and the sealing ring 18 are tightly attached to each other, sealing the gap between the telescopic block 7 and the plug and preventing dust and moisture from entering the socket. At the same time, it further prevents the electric arc from overflowing from the front end and enhances the anti-arc effect.

[0050] As a preferred embodiment of the above, the number of the sockets 4 is set to two or three;

[0051] In this embodiment, it is compatible with different types of electrical equipment plugs, improving the product's versatility and meeting the diverse power needs of home, office and other scenarios, without the need to replace the socket.

[0052] The working principle of this utility model is as follows:

[0053] When the socket is not in use, the coil spring 15 is pre-tightened, which drives the telescopic block 7 to rotate and reset. The socket 4 and the spring 5 are misaligned, and the slider 12 is located at the front end of the slide rail 10, forming a self-locking structure.

[0054] When using:

[0055] 1. The plug is inserted into the socket 4 of the telescopic block 7, and the compression ball of the elastic card 14 clamps the plug to achieve pre-fixation;

[0056] 2. Rotate the plug to drive the telescopic block 7 to rotate synchronously (the guide post 9 and the positioning rod 8 cooperate to transmit torque). The slider 12 slides along the slide rail 10 until it is pressed against the end of the slide rail 10. At this time, the socket 4 and the spring 5 are completely aligned.

[0057] 3. Press the plug and push the telescopic block 7 into the socket along the telescopic hole. The positioning rod 8 moves with the telescopic block 7, and the guide post 9 gradually slides into the guide groove of the positioning rod 8 (axial guidance) until the plug pin is inserted into the spring 5 and clamped. The receiving groove covers the spring 5 and the sealing ring 18 seals the gap, and the power is turned on.

[0058] Unplug after use:

[0059] 1. Pull the plug outward, and the elastic force of the elastic card 14 will cause the telescopic block 7 to return to its axial position (the guide post 9 slides out of the guide groove) until the telescopic block 7 returns to its initial axial position.

[0060] 2. Continue pulling the plug until it overcomes the friction of the squeezing ball and then disengages from the socket 4;

[0061] 3. The coil spring 15 releases the preload, causing the rotating shaft 13, guide post 9, positioning rod 8, and telescopic block 7 to rotate and reset. The slider 12 returns to its initial position along the slide rail 10, and the socket returns to its self-locking state, ready for the next use.

[0062] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A socket based on anti-arc interference function, comprising a front cover (1), a decorative frame (2) fitted on the front cover (1), a rear cover (3) at the rear end of the front cover (1), a socket (4) on the front cover (1), a number of springs (5) corresponding to the socket (4) at the front end of the rear cover (3), metal grids (6) adjacent to the live wire springs (5) and the neutral wire springs (5), and a wiring assembly electrically connected to the springs (5) at the rear end of the rear cover (3), wherein both the front cover (1) and the rear cover (3) are made of shielding material, characterized in that, It also includes a telescopic block (7), the rear end of which is provided with a receiving groove. The front end of the front cover (1) is provided with a telescopic hole extending from front to back. The telescopic hole and the telescopic block (7) are slidably fitted together. The insertion hole (4) is opened on the telescopic block (7) and communicates with the receiving groove. The front end of the receiving groove is coaxially provided with a positioning rod (8). The rear end of the positioning rod (8) is provided with a guide groove. A guide post (9) is slidably fitted in the guide groove. The rear end of the guide post (9) is connected to the middle of the front end of the rear end cover (3) through a connecting component. The front end cover (1) is provided with a limiting component that limits the initial position of the telescopic block (7).

2. The socket based on anti-arc interference function as described in claim 1, characterized in that, The limiting component includes a slide rail (10), which is installed at the rear end of the front cover (1). The slide rail (10) is close to the telescopic block (7) and its shape is adapted to the outer side wall of the telescopic block (7). A sliding outlet (11) is provided through one side of the slide rail (10) from front to back. A slider (12) is provided on the side wall of the telescopic block (7). The slider (12) is slidably engaged with the slide rail (10). The connecting component includes a rotating shaft (13). One end of the rotating shaft (13) is rotatably connected to the middle of the front end of the rear cover (3), and the other end is concentrically connected to the guide post (9). The guide post (9) is set as a multi-faceted prism, and the guide groove is set as a multi-faceted groove adapted to the guide post (9). When the telescopic block (7) is rotated so that the position of the insertion hole (4) and the spring (5) are aligned, the position of the slider (12) and the sliding outlet (11) are aligned.

3. The socket based on anti-arc interference function as described in claim 2, characterized in that, An elastic card (14) is provided at the front end of the receiving groove near the insertion hole (4), and a compression ball is provided on the side of the elastic card (14) facing the insertion hole (4).

4. The socket based on anti-arc interference function as described in claim 3, characterized in that, A coil spring (15) is fitted on the rotating shaft (13). One end of the coil spring (15) is connected to the rear end cover (3), and the other end is connected to the rotating shaft (13).

5. The socket based on anti-arc interference function as described in claim 4, characterized in that, The rear end of the slide rail (10) is provided with auxiliary guide rods (16) on both sides of the slide outlet (11).

6. The socket based on anti-arc interference function as described in claim 5, characterized in that, The slider (12) is cylindrical.

7. The socket based on anti-arc interference function as described in claim 6, characterized in that, The area near the slide outlet (11) at the front end of the slide rail (10) is configured as a slope (17) extending toward the slide outlet (11).

8. The socket based on arc-proof and anti-interference function as described in any one of claims 1-7, characterized in that, The front end of the telescopic block (7) is provided with an annular groove, and a sealing ring (18) is provided in the annular groove. The insertion hole (4) is located in the sealing ring (18).

9. The socket based on anti-arc interference function as described in claim 1, characterized in that, The number of the sockets (4) is set to two or three.

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