Anti-creeping safety plug

By increasing the contact area between the plug and the socket and improving structural strength, the problems of leakage and poor contact in traditional plugs in humid environments have been solved, thus improving safety and stability.

CN223871737UActive Publication Date: 2026-02-03DONGGUAN PUMING ELECTRIC WIRE CO LTD
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Patent Information

Application Number
CN202423307195.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2026-02-03
Estimated Expiration
2034-12-31

AI Technical Summary

Technical Problem

Traditional plugs are prone to leakage in humid environments, and have high contact resistance, making them susceptible to poor contact.

Method used

A leakage-proof safety plug was designed. By increasing the contact area and structural strength between the plug and the socket, and by using a combination of base, plug, limiting groove, arc groove and arc plate, the contact area is increased and the connection stability is improved, while the contact resistance is reduced.

Benefits of technology

It effectively reduces the risk of leakage, reduces heat generation and electrical sparks, and improves the safety and stability of the plug.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an anti-creeping safety plug, which comprises a plug main body, the plug main body comprises a lower shell, the top end of the lower shell is covered with an upper shell, one side of the interior of the lower shell is provided with a leakage protector, the other side of the interior of the lower shell is provided with a connecting mechanism, and the top end of the upper shell is provided with an indicating lamp connected with the leakage protector. One side of the leakage protector is connected with a connecting line extending out of the side face of the lower shell, the connecting mechanism comprises a base, two inserting mechanisms are symmetrically arranged in the base, the bottom ends of the two inserting mechanisms penetrate through the lower shell and extend out of the lower end face of the lower shell, and lug plates are arranged on the two sides of the base. The two plugging mechanisms are arranged on the base, the top end of the base is provided with two through grooves directly facing the two plugging mechanisms, the interior of each through groove is rotatably connected with a limiting plate, and the top end of the base is rotatably provided with a rotating plate, the anti-creeping safety plug has the advantages of large contact area and small contact resistance, and solves the problems that a current anti-creeping safety plug is large in contact resistance and poor in contact.
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Description

Technical Field

[0001] This utility model relates to the field of safety plug technology, specifically a safety plug that prevents leakage current. Background Technology

[0002] Traditional plugs primarily serve the basic function of connecting appliances to a power source and conducting current. However, with the increasing complexity and diversity of appliance usage scenarios, and people's growing awareness of electrical safety, the limitations of ordinary plugs are becoming increasingly apparent. On the one hand, in humid environments such as bathrooms, kitchens, and basements, moisture can easily penetrate the plug, leading to decreased insulation performance and increasing the risk of electric shock. In the event of a leak, users may suffer electric shock upon touching the appliance's casing or related metal parts, potentially endangering their lives in severe cases.

[0003] Existing leakage protection safety plugs, after being inserted into the socket, complete the electrical connection by having the arc-shaped spring inside the socket contact with both sides of the plug. However, the contact area between the arc-shaped spring and the plug is small, resulting in high contact resistance and the occurrence of poor contact. Utility Model Content

[0004] The purpose of this invention is to provide a safety plug that prevents leakage current, which has the advantages of large contact area and low contact resistance, thus solving the problem that current safety plugs for preventing leakage current have large contact resistance and may experience poor contact.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety plug for preventing leakage current, comprising a plug body, the plug body comprising a lower shell, the top of the lower shell being covered by an upper shell, and a leakage protection device being provided on one side of the lower shell and a connecting mechanism being provided on the other side, the top of the upper shell being provided with an indicator light for connecting to the leakage protection device, a connecting line extending out of the side of the lower shell being connected to one side of the leakage protection device, the connecting mechanism comprising a base, and two plug-in mechanisms being symmetrically arranged inside the base, the bottom ends of the two plug-in mechanisms penetrating the lower shell and extending out of the lower end face of the lower shell.

[0006] Preferably, ear plates are provided on both sides of the base, and two through slots are provided at the top of the base facing the two plug-in mechanisms. A limit plate is rotatably connected in each through slot, and a rotating plate is rotatably installed at the top of the base.

[0007] Preferably, each of the limiting plates is provided with an arc block at its bottom end, and the bottom end of the arc block is provided with a protrusion perpendicular to the arc surface of the arc block.

[0008] Preferably, the middle part of the rotating plate is rotatably connected to the base, and both ends of the rotating plate extend through grooves to the side away from the center of the lower shell.

[0009] Preferably, each of the insertion mechanisms includes a insert, the top end of which extends into the base and the bottom end extends out of the lower end face of the lower shell, and the top end of the insert is recessed with a limiting groove.

[0010] Preferably, the insert has two symmetrically formed arc grooves on its side, and two arc plates are symmetrically arranged inside the section of the insert with the arc grooves, the two arc plates together forming an elliptical reinforcing rib.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, by setting a base, insert, limiting groove, arc groove and arc plate, increases the connection area with the wire by the insert set at the bottom of the base and the limiting groove set at the top of the insert. The arc groove opened on the side of the insert fits the socket spring and increases the contact area between the insert and the socket. The arc plate set in the insert can increase the structural strength of the insert, increase the contact area between the electrode and the socket, reduce the contact resistance, reduce the heat generation and electric spark phenomenon caused by poor contact, and thus reduce the risk of leakage.

[0013] 2. This utility model, by setting a base, a through groove, a limiting plate, an arc block, and a protrusion, allows the limiting plate, which is installed in the through groove, to be rotated. The arc block at the bottom of the limiting plate abuts against the electrical wire inserted into the through groove. The protrusion at the bottom of the arc block compacts the wire, which can increase the connection stability between the wire and the plug. The leakage protection device set between the connecting wire and the connecting mechanism can prevent the plug from leaking electricity. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the disassembled parts of this utility model;

[0016] Figure 3 This utility model Figure 2 A schematic diagram of the intermediate connecting mechanism;

[0017] Figure 4 This utility model Figure 2 A schematic diagram of the vertical cross-sectional structure of the connecting mechanism;

[0018] Figure 5 This utility model Figure 2 A schematic diagram of the unfolded connecting mechanism.

[0019] The reference numerals and names in the figure are as follows:

[0020] 1. Plug body; 11. Lower shell; 12. Upper shell; 13. Residual current device (RCD); 14. Indicator light; 15. Connecting wire; 2. Connecting mechanism; 21. Base; 22. Ear plate; 23. Through groove; 24. Limiting plate; 25. Rotating plate; 26. Arc block; 27. Protrusion; 3. Plug mechanism; 31. Insert; 32. Limiting groove; 33. Arc groove; 34. Arc plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0023] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0024] Please see Figures 1 to 5This utility model provides an embodiment of a leakage-proof safety plug, comprising a plug body 1, the plug body 1 including a lower shell 11, the top of the lower shell 11 being covered by an upper shell 12, and a leakage protection device 13 being provided on one side of the lower shell 11, and a connecting mechanism 2 being provided on the other side. An indicator light 14 for connecting to the leakage protection device 13 is provided at the top of the upper shell 12, and a connecting wire 15 extending out of the side of the lower shell 11 is connected to one side of the leakage protection device 13. The connecting mechanism 2 includes a base 21, inside which two plug-in mechanisms 3 are symmetrically arranged. The bottom ends of both plug-in mechanisms 3 penetrate the lower shell 11 and extend out of the lower end face of the lower shell 11. Ear plates 22 are provided on both sides of the base 21, and two through slots 23 are provided at the top of the base 21, directly opposite the two plug-in mechanisms 3. Each through slot... Each of the 23 is rotatably connected to a limiting plate 24. A rotating plate 25 is rotatably installed on the top of the base 21. Each limiting plate 24 has an arc block 26 at its bottom end. The bottom end of the arc block 26 has a protrusion 27 perpendicular to the arc surface of the arc block 26. The middle part of the rotating plate 25 is rotatably connected to the base 21. Both ends of the rotating plate 25 extend through grooves 23 away from the center of the lower shell 11. Each insertion mechanism 3 includes an insert 31. The top end of the insert 31 extends into the base 21, and the bottom end extends out of the lower end face of the lower shell 11. The top end of the insert 31 is recessed and has a limiting groove 32. Two arc grooves 33 are symmetrically opened on the side of the insert 31. Two arc plates 34 are symmetrically arranged inside the section of the insert 31 with the arc grooves 33. The two arc plates 34 together form an elliptical reinforcing rib.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A safety plug that prevents leakage current, characterized in that: The device includes a plug body (1), which includes a lower shell (11). The top of the lower shell (11) is covered by an upper shell (12). A leakage protection device (13) is provided on one side of the lower shell (11), and a connecting mechanism (2) is provided on the other side. An indicator light (14) for connecting the leakage protection device (13) is provided on the top of the upper shell (12). A connecting line (15) extending out of the side of the lower shell (11) is connected to one side of the leakage protection device (13). The connecting mechanism (2) includes a base (21). Two plug-in mechanisms (3) are symmetrically arranged inside the base (21). The bottom ends of the two plug-in mechanisms (3) penetrate the lower shell (11) and extend out of the lower end face of the lower shell (11).

2. The safety plug for preventing leakage current as described in claim 1, characterized in that: The base (21) is provided with ear plates (22) on both sides, and the top of the base (21) has two through slots (23) facing the two plug-in mechanisms (3). Each through slot (23) is rotatably connected to a limiting plate (24), and a rotating plate (25) is rotatably installed on the top of the base (21).

3. A safety plug for preventing leakage current as described in claim 2, characterized in that: Each of the limiting plates (24) is provided with an arc block (26) at its bottom end, and the bottom end of the arc block (26) is provided with a protrusion (27) perpendicular to the arc surface of the arc block (26).

4. A safety plug for preventing leakage current according to claim 2, characterized in that: The rotating plate (25) is rotatably connected to the base (21) at the middle, and both ends of the rotating plate (25) extend through grooves (23) away from the center of the lower shell (11).

5. A safety plug for preventing leakage current according to claim 1, characterized in that: Each of the aforementioned plug-in mechanisms (3) includes a plug (31), the top end of which extends into the base (21), the bottom end of which extends out of the lower end face of the lower shell (11), and the top end of the plug (31) is recessed and formed by a limiting groove (32).

6. A safety plug for preventing leakage current according to claim 5, characterized in that: The insert (31) has two symmetrically formed arc grooves (33) on its side, and two arc plates (34) are symmetrically arranged inside the section of the insert (31) with the arc grooves (33), and the two arc plates (34) together form an elliptical reinforcing rib.