Power line plug with overload protection

Abstract

The utility model discloses a power line plug with overload protection, which comprises a plug body and a protection mechanism, the plug body is provided with a power supply connecting line, and the power supply connecting line is provided with a circuit overload protection box used for automatically cutting off a circuit when the circuit is overloaded. The plug body is provided with a protection mechanism which is used for protecting the pins and sealing the plug body when the plug body is plugged into the socket. According to the utility model, through the unique protection structure design, the situation that the pins on the plug body are accidentally treaded and deformed can be effectively avoided, the plug body has good sealing performance when being plugged in a socket, liquid can be effectively prevented from flowing in, safety accidents such as short circuit, electric leakage and the like caused by the fact that the liquid permeates into the socket can be prevented, and the service life of the plug is prolonged. A safe and reliable electricity utilization environment is provided for a user, the electric shock risk is reduced, the personal safety of the user and electrical equipment are protected, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of power cord plug technology, specifically a power cord plug with overload protection. Background Technology

[0002] In modern life, power cord plugs, as key components connecting electrical equipment to the power source, are widely used in various electronic devices, from everyday computer power adapters to large household appliances such as refrigerators and televisions. The safe and stable operation of power cord plugs directly affects the normal use of the equipment and the safety of the user.

[0003] A search revealed that patent publication number CN220797294U discloses a power cord plug with overload protection. This utility model includes a base plate, a buckle plate on top of the base plate, a protective mechanism mounted on top of the base plate, a conductive metal plate fixedly connected to the right side of the protective mechanism, and a wire fixedly connected to the left side of the protective mechanism. A protective component is provided on the arc-shaped surface of the wire near the base plate. A storage groove is provided at the lower end of the base plate, and a prong is rotatably connected to the inner wall of the storage groove. This design solves the problem that the prongs of traditional power cord plugs are fixed, resulting in a large overall size. Furthermore, when not in use, the prongs are exposed on the plug body, making them susceptible to wear from external scratches. Existing technologies use a rotating connection to store the plug in the storage groove, but this rotating connection makes it prone to wobbling after insertion into a socket, causing poor contact between the prongs and the conductive metal plate, thus affecting power supply to the device.

[0004] Existing power cord plugs with overload protection have many problems in practical use. On the one hand, the plug pins are usually directly exposed. In daily use scenarios, such as offices and living rooms, where people move around frequently, power cords are often left on the ground, and the plug pins are easily stepped on. Once the pins are deformed, it will not only lead to poor contact between the plug and the socket, affecting the normal power supply of the equipment, but may also cause overheating due to increased contact resistance, and in severe cases, even cause fires and other safety accidents. On the other hand, when the plug is plugged into the socket, there is a gap between the plug and the socket, lacking effective sealing measures. In humid environments such as kitchens and bathrooms, or in the event of accidental water spills, liquid can easily flow into the socket through the gap between the plug and the socket. This may cause short circuits in the socket, damage electrical equipment, or even cause electric shock hazards, posing a serious threat to the personal safety and property safety of users. Therefore, it is necessary to design a power cord plug with overload protection. Utility Model Content

[0005] In view of the defects or deficiencies of power cord plugs with overload protection, the purpose of this utility model is to provide a power cord plug with overload protection, which can not only effectively prevent the pins on the plug body from being deformed by accidental stepping, but also have good sealing performance when the plug body is inserted into the socket, effectively preventing liquid from flowing in.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a power cord plug with overload protection, including a plug body and a protective mechanism. The plug body is provided with a power connection line, and the power connection line is provided with a circuit overload protection box for automatically cutting off the circuit when the circuit is overloaded. The plug body is provided with a protective mechanism for protecting the pins and for sealing the plug body when it is plugged into a socket.

[0008] Preferably, the protective mechanism is composed of a first annular connecting plate, a first spring, a second annular connecting plate, a second spring, a third annular connecting plate, and an annular rubber ring, wherein the first annular connecting plate is disposed on the outer surface of the plug body.

[0009] Preferably, one end of the first annular connecting plate is provided with a first mounting groove, one end of the second annular connecting plate is disposed in the first mounting groove, and a first annular limiting block is provided on both the inner and outer circumferential walls of one end of the second annular connecting plate.

[0010] Preferably, a second mounting groove is provided at the other end of the second annular connecting plate, one end of the third annular connecting plate is disposed in the second mounting groove, and a second annular limiting block is provided on both the outer circumferential wall and the inner circumferential wall of one end of the third annular connecting plate.

[0011] A ring-shaped rubber ring is installed at the other end of the third annular connecting plate.

[0012] Preferably, the top of the inner side of the first mounting groove is provided with a first limiting post arranged in a ring array, the top of the second annular connecting plate is provided with a second limiting post arranged in a ring array, and a first spring is provided on the outer side of the outer wall between the first limiting post and the second limiting post.

[0013] Preferably, a third limiting post arranged in a ring array is provided at the top of the inner side of the second mounting groove, a fourth limiting post arranged in a ring array is provided at the top of the third annular connecting plate, and a second spring is provided on the outer side of the outer wall between the third limiting post and the fourth limiting post.

[0014] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0015] 1. In this utility model, through a series of coordinated structural arrangements, when the plug body is not plugged into the socket and is placed randomly on an object, when the plug body is subjected to a certain external force, because the pins on the plug body are located inside the protective mechanism, they will first exert a certain force on the protective mechanism, thereby effectively preventing the pins on the plug body from being accidentally stepped on and deformed, and thus preventing the deformation of the pins on the plug body from causing poor contact between the plug body and the socket, which would affect the normal power supply of the equipment and cause safety accidents.

[0016] 2. In this utility model, through a series of coordinated structural arrangements, when the plug body is fully inserted into the socket, both the first spring and the second spring are in a certain compressed state. Under the rebound force of the first spring and the second spring, there will be a certain force between the annular rubber ring and the socket. At this time, the annular rubber ring can effectively prevent liquid from flowing into the connection between the pin and the socket, thereby preventing short circuits, leakage and other safety accidents caused by liquid seeping into the socket, providing users with a safe and reliable power environment, reducing the risk of electric shock, and protecting the personal safety of users and electrical equipment. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model. Figure 2 .

[0020] Figure 3 This is a partial cross-sectional view of the connection structure between the plug body and the protective mechanism of this utility model.

[0021] Figure 4 This is a partial sectional view of the protective mechanism of this utility model.

[0022] Figure 5 This is a partial cross-sectional view of the third annular connecting plate of this utility model.

[0023] Figure 6 This is a partial cross-sectional view of the second annular connecting plate of this utility model.

[0024] Figure 7 This is a partial cross-sectional view of the first annular connecting plate of this utility model.

[0025] In the picture:

[0026] 100. Plug body;

[0027] 200. Protective mechanism; 210. First annular connecting plate; 211. First limiting post; 212. First mounting groove; 220. First spring; 230. Second annular connecting plate; 231. First annular limiting block; 232. Second limiting post; 233. Third limiting post; 234. Second mounting groove; 240. Second spring; 250. Third annular connecting plate; 251. Fourth limiting post; 252. Second annular limiting block; 260. Annular rubber ring;

[0028] 300. Power cord;

[0029] 400. Circuit overload protection box. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] like Figure 1-7 As shown, a power cord plug with overload protection includes a plug body 100 and a protective mechanism 200. The plug body 100 is provided with a power connection cord 300, and the power connection cord 300 is provided with a circuit overload protection box 400 for automatically cutting off the circuit when the circuit is overloaded. The circuit overload protection box 400 is provided with a circuit breaker inside. When the circuit is overloaded, the contacts of the circuit breaker open and cut off the circuit. The plug body 100 is provided with a protective mechanism 200 for protecting the pins and for sealing the plug body 100 when it is plugged into the socket.

[0034] The protective mechanism 200 is composed of a first annular connecting plate 210, a first spring 220, a second annular connecting plate 230, a second spring 240, a third annular connecting plate 250 and an annular rubber ring 260. The first annular connecting plate 210 is disposed on the outside of the plug body 100.

[0035] One end of the first annular connecting plate 210 is provided with a first mounting groove 212, and one end of the second annular connecting plate 230 is disposed in the first mounting groove 212. A first annular limiting block 231 is provided on both the inner and outer circumferential walls of one end of the second annular connecting plate 230. The first annular limiting block 231 can limit and guide the movement of the second annular connecting plate 230 in the first mounting groove 212.

[0036] The other end of the second annular connecting plate 230 is provided with a second mounting groove 234, and one end of the third annular connecting plate 250 is disposed in the second mounting groove 234. The outer and inner circumferential walls of the third annular connecting plate 250 are provided with second annular limiting blocks 252. The second annular limiting blocks 252 can limit and guide the movement of the third annular connecting plate 250 in the second mounting groove 234.

[0037] A ring-shaped rubber ring 260 is installed at the other end of the third annular connecting plate 250.

[0038] The top of the inner side of the first mounting groove 212 is provided with a first limiting post 211 arranged in a ring array, the top of the second annular connecting plate 230 is provided with a second limiting post 232 arranged in a ring array, and a first spring 220 is provided on the outer side of the outer wall between the first limiting post 211 and the second limiting post 232.

[0039] The inner top of the second mounting groove 234 is provided with a third limiting post 233 arranged in a ring array, the top of the third annular connecting plate 250 is provided with a fourth limiting post 251 arranged in a ring array, and a second spring 240 is provided on the outer side of the outer wall between the third limiting post 233 and the fourth limiting post 251.

[0040] Working principle: During the process of inserting the pins on the plug body 100 into the socket hole, the socket will exert a certain force on the annular rubber ring 260. After the annular rubber ring 260 is subjected to a certain force, it will exert a certain force on the second spring 240 through the third annular connecting plate 250. The second spring 240 will be transmitted to the second annular connecting plate 230. After the second annular connecting plate 230 is subjected to a certain force, it will exert a certain force on the first spring 220. When the plug body 100 is fully inserted into the socket, both the first spring 220 and the second spring 240 are in a certain compressed state. Part of the third annular connecting plate 250 moves into the second mounting groove 234, and part of the second annular connecting plate 230 moves into the first mounting groove 212. Under the rebound force of the first spring 220 and the second spring 240, the annular rubber ring 260 will be compressed. There is a certain force between the plug body 100 and the socket. At this time, the annular rubber ring 260 can effectively prevent liquid from flowing into the connection between the pin and the socket, thereby preventing short circuits, leakage and other safety accidents caused by liquid seepage into the socket. This provides users with a safe and reliable power environment, reduces the risk of electric shock, and protects the personal safety of users and electrical equipment. When the plug body 100 is not plugged into the socket and is placed on an object, when the plug body 100 is subjected to a certain external force, because the pins on the plug body 100 are located inside the protective mechanism 200, they will first exert a certain force on the protective mechanism 200. This effectively prevents the pins on the plug body 100 from being accidentally stepped on and deformed. This also prevents the deformation of the pins on the plug body 100 from causing poor contact between the plug body 100 and the socket, which could affect the normal power supply of the equipment and cause safety accidents.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the invention. For those skilled in the art, various modifications and variations can be made to this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A power cord plug with overload protection, comprising a plug body (100) and a protection mechanism (200), characterized in that: The plug body (100) is provided with a power connection line (300), the power connection line (300) is provided with a circuit overload protection box (400) for automatically cutting off the circuit when the circuit is overloaded, and the plug body (100) is provided with a protection mechanism (200) for protecting the pins and sealing when the plug body (100) is plugged into the socket.

2. The power cord plug with overload protection of claim 1, wherein: The protection mechanism (200) is composed of a first annular connecting plate (210), a first spring (220), a second annular connecting plate (230), a second spring (240), a third annular connecting plate (250) and an annular rubber ring (260), and the first annular connecting plate (210) is arranged outside and above the plug body (100).

3. The power cord plug with overload protection of claim 2, wherein: One end of the first annular connecting plate (210) is provided with a first mounting groove (212), one end of the second annular connecting plate (230) is arranged in the first mounting groove (212), and the circumferential inner wall and the circumferential outer wall of one end of the second annular connecting plate (230) are both provided with a first annular limiting block (231).

4. The power cord plug with overload protection of claim 3, wherein: The other end of the second annular connecting plate (230) is provided with a second mounting groove (234), one end of the third annular connecting plate (250) is arranged in the second mounting groove (234), and the circumferential outer wall and the circumferential inner wall of one end of the third annular connecting plate (250) are both provided with a second annular limiting block (252). The other end of the third annular connecting plate (250) is provided with an annular rubber ring (260).

5. The power cord plug with overload protection of claim 4, wherein: The inner side top end of the first mounting groove (212) is provided with a first limiting column (211) arranged in a ring array, the top end of the second annular connecting plate (230) is provided with a second limiting column (232) arranged in a ring array, and the outer wall outside the first limiting column (211) and the second limiting column (232) is provided with a first spring (220).

6. The power cord plug with overload protection of claim 5, wherein: The inner side top end of the second mounting groove (234) is provided with a third limiting column (233) arranged in a ring array, the top end of the third annular connecting plate (250) is provided with a fourth limiting column (251) arranged in a ring array, and the outer wall outside the third limiting column (233) and the fourth limiting column (251) is provided with a second spring (240).

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