CN219350801U - Power connection equipment with overload protection function - Google Patents

Abstract

The utility model discloses power-on equipment with an overload protection function, and belongs to the technical field of power-on equipment. The plug comprises a first conductive column and a second conductive column, the socket comprises a first metal sheet and a second metal sheet, and when the power receiving equipment is in a current overload state, an active layer of the first metal sheet or the second metal sheet bends towards one side far away from the adjacent first conductive column or second conductive column when the temperature rises; when the power receiving device is no longer in the current overload state, the active layer of the first metal sheet or the second metal sheet is restored to the original position. The power-on equipment with the overload protection function can automatically disconnect a circuit when the power-on equipment is in an overload power-on state, so that the insulation performance of circuits, electric appliances and equipment in a loop is prevented from being reduced.

Description

Power connection equipment with overload protection function

Technical Field

The utility model belongs to the technical field of power-on equipment, and particularly relates to power-on equipment with an overload protection function.

Background

Conventional power receiving devices generally include a plug and a socket, wherein the socket is also called a power socket and a switch socket. The socket can be inserted with various wiring, is convenient to be connected with other circuits, achieves the effect of connecting and disconnecting the partial circuits through connection and disconnection between the wiring and the copper piece, and is an essential circuit connecting device when an electric appliance is connected with a power supply.

With the gradual increase of the safety awareness of electricity consumption, the requirements of people on the socket are also higher and higher. In the chinese patent application No. CN202221658847.5, entitled anti-arcing dc socket and power-on device, since the internal structure of the socket uses conventional conductive socket pieces, when the socket is in an overload power-on state for a long time, the insulation performance of circuits, electrical appliances and devices in the circuit is reduced, and even current breakdown is caused.

Disclosure of Invention

1. Problems to be solved

Aiming at the problems that the insulation performance of circuits, electric appliances and equipment in a loop is reduced and even current breakdown is caused when the power-on equipment in the prior art is in an overload power-on state for a long time, the utility model provides the power-on equipment with an overload protection function, which is used for automatically disconnecting a circuit when the power-on equipment is in the overload power-on state and avoiding the reduction of the insulation performance of the circuits, the electric appliances and the equipment in the loop.

2. Technical proposal

In order to solve the problems, the utility model adopts the following technical scheme.

The electric connection equipment with the overload protection function comprises a plug and a socket, wherein the plug comprises a first conductive column and a second conductive column, the socket comprises a first metal sheet and a second metal sheet, the first conductive column and the second conductive column can be respectively inserted into and abutted against the first metal sheet and the second metal sheet or are respectively pulled out from the first metal sheet and the second metal sheet, the first metal sheet and the second metal sheet are formed by an active layer with a higher thermal expansion coefficient of an inner layer and a passive layer with a lower thermal expansion coefficient of an outer layer, and the active layer of the first metal sheet or the second metal sheet is respectively adjacent to the first conductive column or the second conductive column;

when the power receiving device is in a current overload state, the active layer of the first metal sheet or the second metal sheet bends towards one side away from the adjacent first conductive column or second conductive column when the temperature rises, so that the first metal sheet or the second metal sheet is separated from the adjacent first conductive column or second conductive column;

when the power receiving device is no longer in the current overload state, the active layer of the first metal sheet or the second metal sheet is restored to the original position, so that the first metal sheet or the second metal sheet is in contact with the adjacent first conductive column or the second conductive column.

Preferably, the first metal sheet and the second metal sheet are bent to form an arc structure, and are provided with an insertion opening.

Preferably, the socket further includes:

one of the wire inlet end and the wire outlet end is electrically connected with the first metal sheet, and the other wire inlet end and the wire outlet end are electrically connected with the second metal sheet.

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

according to the power connection equipment with the overload protection function, the characteristic that the passive layer with the low thermal expansion coefficient in the first metal sheet and the second metal sheet is heated and bent is utilized, when the power connection equipment is in a current overload state, the active layer of the first metal sheet or the second metal sheet is bent outwards and separated from the adjacent conductive column, and at the moment, the loop current is disconnected; when the temperature is reduced, the first metal sheet or the second metal sheet returns to the original state and contacts the adjacent conductive post, and the circuit is switched on. Therefore, the circuit can be automatically disconnected when the power-on equipment in the application is in an overload power-on state, and further the insulation performance of circuits, electric appliances and equipment in a loop is prevented from being reduced.

Drawings

Fig. 1 is a schematic diagram of an internal structure of a power receiving device with overload protection function in a normal state according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of an internal structure of a power connection device having an overload protection function in a current overload state according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a first metal sheet or a second metal sheet according to an embodiment of the present utility model;

in the figure: 100. a plug; 110. a first conductive pillar; 120. a second conductive post; 200. a socket; 210. a first metal sheet; 211. an active layer; 212. a passive layer; 220. a second metal sheet; 230. a wire inlet end; 240. and a wire outlet end.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "inner", "outer", "upper", "lower", "horizontal", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. Features of the embodiments described below may be combined with each other without conflict.

As shown in fig. 1 to 3, the present embodiment provides an electrical connection device with an overload protection function, which includes a plug 100 and a socket 200.

One of the incoming end 230 and the outgoing end 240 is electrically connected to the first metal sheet 210, and the other is electrically connected to the second metal sheet 220.

The plug 100 includes a first conductive post 110 and a second conductive post 120. The first and second conductive posts 110 and 120 can be inserted into and abutted against the first and second metal sheets 210 and 220 or withdrawn from the first and second metal sheets 210 and 220, respectively.

The first metal sheet and the second metal sheet are composed of an active layer with a higher thermal expansion coefficient of the inner layer and a passive layer with a lower thermal expansion coefficient of the outer layer, and in a preferred embodiment, the first metal sheet and the second metal sheet are bent to form an arc-shaped structure and are provided with an inserting port. The first metal sheet 210 and the second metal sheet 220 are bimetal sheets, and the structure is formed by combining two metals, wherein the metals of the two structural surfaces are different, and after being affected by temperature, the bending expansion coefficients of the two structural surfaces are different, so that the two metals are bent to different degrees, and the expansion coefficient of the active surface is large, and the bending degree is high.

When the first conductive pillar 110 and the second conductive pillar 120 are inserted into and abutted against the first metal sheet 210 and the second metal sheet 220, respectively, the active layer of the first metal sheet 210 or the second metal sheet 220 is adjacent to the first conductive pillar 110 or the second conductive pillar 120, respectively.

Due to the temperature sensing characteristics of the first metal sheet 210 and the second metal sheet 220, when the power receiving device is in a current overload state, the active layer and the passive layer may change differently. More specifically, the active layer of the first or second metal sheet 210 or 220 is bent toward a side away from the adjacent first or second conductive pillar 110 or 120 when the temperature rises, so that the first or second metal sheet 210 or 220 is separated from the adjacent first or second conductive pillar 110 or 120;

when the power receiving device is no longer in the current overload state, the active layer of the first metal sheet 210 or the second metal sheet 220 is restored to the original position, so that the first metal sheet 210 or the second metal sheet 220 is in contact with the adjacent first conductive pillar 110 or the second conductive pillar 120.

In the power connection device with overload protection function in this embodiment, the active layer of the first metal sheet 210 or the second metal sheet 220 is bent outwards and separated from the adjacent conductive column when the passive layer with low thermal expansion coefficient in the first metal sheet 210 and the second metal sheet 220 is in the current overload state by utilizing the characteristic of being heated and bent, and at this time, the loop current is disconnected; when the temperature is lowered, the first metal sheet 210 or the second metal sheet 220 is restored to the original state, and contacts with the adjacent conductive pillars, at which time the circuit is completed. Therefore, the circuit can be automatically disconnected when the power-on equipment in the application is in an overload power-on state, and further the insulation performance of circuits, electric appliances and equipment in a loop is prevented from being reduced.

The examples of the present utility model are merely for describing the preferred embodiments of the present utility model, and are not intended to limit the spirit and scope of the present utility model, and those skilled in the art should make various changes and modifications to the technical solution of the present utility model without departing from the spirit of the present utility model.

Claims (3)

1. The utility model provides an electric installation with overload protection function, includes plug and socket, the plug includes first conductive post and second conductive post, the socket includes first sheetmetal and second sheetmetal, first conductive post and second conductive post can insert respectively and the butt is taken out its characterized in that in first sheetmetal and second sheetmetal or from first sheetmetal and second sheetmetal:

the first metal sheet and the second metal sheet are composed of an active layer with a higher thermal expansion coefficient of an inner layer and a passive layer with a lower thermal expansion coefficient of an outer layer, and the active layer of the first metal sheet or the second metal sheet is adjacent to the first conductive column or the second conductive column respectively;

when the power receiving device is in a current overload state, the active layer of the first metal sheet or the second metal sheet bends towards one side away from the adjacent first conductive column or second conductive column when the temperature rises, so that the first metal sheet or the second metal sheet is separated from the adjacent first conductive column or second conductive column;

when the power receiving device is no longer in the current overload state, the active layer of the first metal sheet or the second metal sheet is restored to the original position, so that the first metal sheet or the second metal sheet is in contact with the adjacent first conductive column or the second conductive column.

2. The electrical connection apparatus with overload protection function according to claim 1, wherein: the first metal sheet and the second metal sheet are bent to form an arc-shaped structure and are provided with an inserting port.

3. The electrical connection apparatus with overload protection function according to claim 1, wherein: the socket further includes:

one of the wire inlet end and the wire outlet end is electrically connected with the first metal sheet, and the other wire inlet end and the wire outlet end are electrically connected with the second metal sheet.

Images