Socket structure with overload protection function

By adding overload protection and safety mechanisms to the socket and using a bimetallic induction plate to disconnect the circuit, the safety hazards caused by socket overload or overheating are solved, achieving rapid power-off and extending service life.

CN224191378UActive Publication Date: 2026-05-01NINGBO SENSHIDA ELECTRICAL
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO SENSHIDA ELECTRICAL
Filing Date
2025-05-21
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing sockets are prone to exposing or deforming internal metal components under overload or overheating conditions, increasing the risk of electric shock, which is especially dangerous for children and the elderly, and also poses a fire hazard.

Method used

An overload protection mechanism is added to the socket structure. The bimetallic strip sensor bends and disconnects the circuit when it overheats. Combined with the protective mechanism, it prevents dust and moisture from entering and extends the service life.

Benefits of technology

It enables rapid power cut-off in case of overload or overheating, preventing overheating and burning, improving safety, and extending the life of the socket.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224191378U_ABST
    Figure CN224191378U_ABST
Patent Text Reader

Abstract

The utility model discloses a socket structure with an overload protection function, which comprises a device main body and an overload protection mechanism, and the overload protection mechanism is arranged at the upper end of the device main body and used for power-off protection. The overload protection mechanism comprises a rear machine cover, one end of the rear machine cover is provided with a machine box, an inner supporting piece is installed in the machine box, and one end of the inner supporting piece is provided with an induction piece. And the safety of the device main body is improved, and the effect of prolonging the service life of the device main body is achieved by installing a protection mechanism at one end of the device main body.
Need to check novelty before this filing date? Find Prior Art

Description

A socket structure with overload protection function Technical Field

[0001] This utility model relates to the field of socket manufacturing technology, and in particular to a socket structure with overload protection function. Background Technology

[0002] A socket is an interface device in an electrical system that connects a power source to electrical equipment. Its design, use, and safety standards are closely related to daily life and industrial production. A socket acts like an "electrical interface," allowing electrical appliances (such as mobile phones and light bulbs) to obtain power after being plugged in. It is fixed to a wall or floor and has internal metal contacts that connect to the wires, ensuring safe power supply.

[0003] The existing public application number CN108899716B discloses a magnetic waterproof socket. The socket has a cavity within a mounting base, containing a fixing block that divides the cavity into an upper and lower cavity. The upper cavity contains a cover plate with a groove on its inner sidewall and a sliding strip on the sidewall of the cover plate, which is housed within the groove. A sealing gasket is provided on the lower surface of the cover plate, fitting snugly against the fixing block. The cover plate has a conductive slot extending below it. The fixing block has an arc-shaped groove, with the lower end of the conductive slot housed within it. A through-groove is located at the bottom of one end of the arc-shaped groove, containing a conductive post with a first inclined surface at its upper end. The lower end of the conductive slot has a second inclined surface. An elastic reset element is provided between the lower end of the conductive post and the bottom surface of the lower cavity. An electrode plate is located below the conductive post. An inner magnetic element is provided on the edge of the cover plate, and a first and second outer magnetic element are provided on the mounting base. The first and second outer magnetic elements have opposite polarities to the inner magnetic element. This invention prevents water from entering the socket, improving electrical safety. When a socket overheats, its internal plastic components or surrounding flammable materials may melt or ignite, potentially causing a fire. This risk increases significantly, especially when the socket is operated under overload for extended periods or has poor contact. Overheating can expose or deform internal metal components, increasing the risk of electric shock. Family members who accidentally touch an overheated socket may suffer electric shock, a risk that is particularly severe for children and the elderly. Summary of the Invention

[0004] Therefore, it is necessary to provide a socket structure with overload protection function to address the above-mentioned technical problems and add overload protection function to the socket.

[0005] In order to solve the above-mentioned technical problems, the present invention solves the problems mentioned in the background art through the following technical solution.

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

[0007] A socket structure with overload protection function includes:

[0008] The device body and the overload protection mechanism are located at the upper end of the device body for power failure protection.

[0009] The overload protection mechanism includes a rear cover, one end of which is fitted with a chassis, and an inner support is installed inside the chassis, with a sensor plate installed at one end of the inner support.

[0010] As a preferred embodiment of the socket structure with overload protection function provided by this utility model, a lower connector is installed inside the chassis, and a movable plate is inserted into the upper end of the lower connector.

[0011] In a preferred embodiment of the socket structure with overload protection function provided by this utility model, the lower end of the movable plate is connected to an elastic element, the upper end of the movable plate is equipped with a power connector, and the inside of the chassis is fitted with wires.

[0012] In a preferred embodiment of the socket structure with overload protection function provided by this utility model, the upper end of the electrical connector is attached to the lower end of the wire, and the lower end of the movable plate is movably engaged with the inner wall of the lower connector.

[0013] As a preferred embodiment of the socket structure with overload protection function provided by this utility model, the elastic element is installed in several groups, and the sensing sheet is made of bimetallic material.

[0014] As a preferred embodiment of the socket structure with overload protection function provided by this utility model, a protective mechanism is installed at one end of the main body of the device, and the protective mechanism includes a socket interface.

[0015] As a preferred embodiment of the socket structure with overload protection function provided by this utility model, one end of the main body of the device is connected to a slider, and a plug plate is inserted inside the slider.

[0016] As a preferred embodiment of the socket structure with overload protection function provided by this utility model, a handle is installed at one end of the socket plate, and the outer surface of the handle is made of frosted material.

[0017] In a preferred embodiment of the socket structure with overload protection function provided by this utility model, the two ends of the plug plate are in contact with the inner wall of the slider.

[0018] In a preferred embodiment of the socket structure with overload protection function provided by this utility model, the lower end of the rear cover is fitted with the inner wall of the main body of the device.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This utility model provides a socket structure with overload protection function. By installing an overload protection mechanism at one end of the main body of the device, when the internal part of the main body overheats, the sensing plate at one end of the inner support is made of bimetallic strip, causing the sensing plate to bend. The bending of the sensing plate presses the movable plate downward, causing the connecting part to separate from the wire, thereby quickly cutting off the power. When the internal temperature of the main body of the device returns to normal, the power is restored, thus achieving overload protection, preventing overheating and burning, and improving the safety of the main body of the device.

[0021] 2. This utility model provides a socket structure with overload protection function. By installing a protective mechanism at one end of the main body of the device, the device is plugged into the socket interface for charging. A slider is installed at one end of the main body of the device, and a plug plate is inserted into the slider to prevent dust and water from entering the socket interface and to facilitate the device body to be carried without scratches. A handle is installed at one end of the plug plate. The frosted handle makes the hand grip more non-slip when the plug plate is inserted, thus extending the service life of the main body of the device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 is a three-dimensional exploded structure diagram of this utility model;

[0024] Figure 2 is a schematic diagram of the overload protection mechanism of this utility model;

[0025] Figure 3 is a schematic diagram of the overload protection explosion structure of this utility model;

[0026] Figure 4 is a schematic diagram of the exploded structure of the device of this utility model from a bottom view;

[0027] Figure 5 is a bottom view of the overload protection mechanism of this utility model;

[0028] Figure 6 is a schematic diagram of the protective component structure of this utility model.

[0029] The markings in the diagram are explained as follows:

[0030] 1. Main body of the device; 2. Overload protection mechanism; 21. Rear cover; 22. Chassis; 23. Internal support; 24. Induction plate; 25. Movable plate; 26. Electrical connection; 27. Wire; 28. Lower connector; 29. ​​Elastic element; 3. Protective mechanism; 31. Socket interface; 32. Slider; 33. Insert plate; 34. Handle. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention. Embodiments

[0032] Please refer to Figures 1, 2, 3, 4, 5, and 6. A socket structure with overload protection function includes:

[0033] The device body 1 and the overload protection mechanism 2 are located at the upper end of the device body 1 for power failure protection.

[0034] The overload protection mechanism 2 includes a rear cover 21, a housing 22 is installed at one end of the rear cover 21, an inner support 23 is installed inside the housing 22, a sensor 24 is installed at one end of the inner support 23, and the lower end of the rear cover 21 is attached to the inner wall of the device body 1.

[0035] In the embodiments of this application, a lower connector 28 is installed inside the chassis 22, and a movable plate 25 is inserted into the upper end of the lower connector 28. When the internal temperature of the main body 1 of the device returns to normal, the sensing plate 24 returns to its original shape. Since the movable plate 25 is inserted into the lower connector 28, the connection between the power connector 26 and the wire 27 is restored by lifting the upper end of the movable plate 25 through the elastic effect of the elastic member 29 installed at the lower end of the movable plate 25, and the power supply continues.

[0036] The lower end of the movable plate 25 is connected to the elastic element 29, and the upper end of the movable plate 25 is equipped with the electrical connector 26. The inside of the chassis 22 is inserted with the wire 27. The upper end of the electrical connector 26 is in contact with the lower end of the wire 27. The lower end of the movable plate 25 is in movable cooperation with the inner wall of the lower connector 28. Several sets of elastic elements 29 are installed. The sensing plate 24 is made of bimetallic material. By installing an overload protection mechanism 2 at one end of the device body 1, the rear cover 21 is inserted into one end of the device body 1 and the circuit is connected. The device is plugged into the socket interface 31 at one end of the device body 1 for charging. The wire 27 is inserted inside the chassis 22 and is connected to the electrical connector 26 for power supply. When the inside of the device body 1 is overheated, the sensing plate 24 at one end of the inner support 23 is made of bimetallic material, causing the sensing plate 24 to bend. The bending of the sensing plate 24 presses the movable plate 25 downward, causing the electrical connector 26 to separate from the wire 27, thereby quickly cutting off the power.

[0037] In addition to the above design, an overload protection mechanism 2 is installed at one end of the main body 1. The rear cover 21 is inserted into one end of the main body 1 to connect the circuit. The device is plugged into the socket interface 31 at one end of the main body 1 for charging. A wire 27 is inserted inside the casing 22 and connected to the connector 26 for power supply. When overheating occurs inside the main body 1, the sensing plate 24 at one end of the inner support 23, being made of bimetallic material, bends. The bending of the sensing plate 24 presses the movable plate 25 downward, causing the connector 26 to separate from the wire 27, thus quickly... When the power is cut off, after the internal temperature of the main body 1 of the device returns to normal, the sensing plate 24 returns to its original shape. Due to the movable plate 25 being inserted into the lower connector 28, the elastic element 29 installed at the lower end of the movable plate 25 is elastically attached to the upper end of the movable plate 25, and the connection between the connecting element 26 and the wire 27 is restored, and power is restored. This achieves overload protection, prevents overheating and burning, and improves the safety of the main body 1 of the device. The bimetallic strip is made of two or more layers of metals with different coefficients of thermal expansion. The metal layer with a higher coefficient of expansion is called the active layer, and the metal layer with a lower coefficient of expansion is called the passive layer.

[0038] In the embodiments of this application, a protective mechanism 3 is installed at one end of the device body 1. The protective mechanism 3 includes a socket interface 31. A slider 32 is connected to one end of the device body 1. A plug plate 33 is inserted inside the slider 32. The two ends of the plug plate 33 are in contact with the inner wall of the slider 32. By installing the protective mechanism 3 at one end of the device body 1, the device is charged by inserting it into the socket interface 31. The installation of the slider 32 at one end of the device body 1 and the insertion of the plug plate 33 in the slider 32 prevent dust and water from entering the socket interface 31, making it easier for the device body 1 to be protected from scratches when carried.

[0039] However, a handle 34 is installed at one end of the insertion plate 33. The outer surface of the handle 34 is made of frosted material. By installing a handle 34 at one end of the insertion plate 33, the frosted material of the handle 34 makes the hand gripping the insertion plate 33 more non-slip when it is inserted, thus achieving the effect of extending the service life of the main body 1 of the device.

[0040] The usage process of the socket structure with overload protection function provided by this utility model is as follows: An overload protection mechanism 2 is installed at one end of the main body 1. The rear cover 21 is inserted into one end of the main body 1, and the circuit is connected. The device is plugged into the socket interface 31 at one end of the main body 1 for charging. A wire 27 is inserted inside the casing 22, and is connected to the connecting component 26 for power supply. When overheating occurs inside the main body 1, the sensing plate 24 at one end of the inner support 23, being made of bimetallic material, bends. The bending of the sensing plate 24 presses the movable plate 25 downwards, causing the connecting component 26 to separate from the wire 27, thus quickly cutting off the power. When the internal temperature of the main body 1 returns to normal, the sensing plate 24 returns to its normal position. The device returns to its original shape. Due to the movable plate 25 being inserted into the lower connector 28, the elastic element 29 installed at the lower end of the movable plate 25 provides elasticity. The connection between the power connector 26 and the wire 27 is restored when the movable plate 25 is lifted, and power is restored. A protective mechanism 3 is installed at one end of the device body 1. The device is plugged into the socket interface 31 for charging. A slider 32 is installed at one end of the device body 1. A plug plate 33 is inserted into the slider 32 to prevent dust and water from entering the socket interface 31 and to facilitate the carrying of the device body 1. A handle 34 is installed at one end of the plug plate 33. The frosted handle 34 makes the hand grip more non-slip when the plug plate 33 is inserted, thus extending the service life of the device body 1.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A socket structure with overload protection function, characterized in that, It includes: The device body (1) and the overload protection mechanism (2) are located at the upper end of the device body (1) for power failure protection. The overload protection mechanism (2) includes a rear cover (21), a housing (22) is installed at one end of the rear cover (21), an inner support (23) is installed inside the housing (22), and an induction plate (24) is installed at one end of the inner support (23).

2. The socket structure with overload protection function according to claim 1, characterized in that, The chassis (22) is equipped with a lower connector (28), and a movable plate (25) is inserted into the upper end of the lower connector (28).

3. A socket structure with overload protection function according to claim 2, characterized in that, The lower end of the movable plate (25) is connected to an elastic element (29), the upper end of the movable plate (25) is equipped with an electrical connector (26), and the inside of the chassis (22) is fitted with an electrical wire (27).

4. A socket structure with overload protection function according to claim 3, characterized in that, The upper end of the electrical connector (26) is attached to the lower end of the wire (27), and the lower end of the movable plate (25) is movably engaged with the inner wall of the lower connector (28).

5. A socket structure with overload protection function according to claim 4, characterized in that, The elastic element (29) is installed in several groups, and the sensing sheet (24) is made of bimetallic material.

6. A socket structure with overload protection function according to claim 5, characterized in that, A protective mechanism (3) is installed at one end of the main body (1) of the device, and the protective mechanism (3) includes a socket interface (31).

7. A socket structure with overload protection function according to claim 6, characterized in that, One end of the main body (1) of the device is connected to a slider (32), and a plate (33) is inserted inside the slider (32).

8. A socket structure with overload protection function according to claim 7, characterized in that, A handle (34) is installed at one end of the insert plate (33), and the outer surface of the handle (34) is made of frosted material.

9. A socket structure with overload protection function according to claim 8, characterized in that, The two ends of the insert plate (33) are in contact with the inner wall of the slider (32).

10. A socket structure with overload protection function according to claim 9, characterized in that, The lower end of the rear cover (21) is attached to the inner wall of the main body (1).

Citation Information

Patent Citations

  • Magnetic waterproof socket

    CN108899716B