CN214542673U

CN214542673U - Power line plug

Info

Publication number: CN214542673U
Application number: CN202120831182.2U
Authority: CN
Inventors: 范金芝; 宋志红; 徐文涛; 龙晓芬
Original assignee: Hisense Ronshen Guangdong Refrigerator Co Ltd
Current assignee: Hisense Ronshen Guangdong Refrigerator Co Ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-10-29
Anticipated expiration: 2031-04-21

Abstract

The utility model relates to a power line plug, which comprises a conductive pin, a power line, a first injection molding layer and a second injection molding layer; one end of the power line is electrically connected with the conductive pin; the first injection molding layer is coated at the joint of the conductive pin and the power line and fixes the conductive pin and the power line; the second injection molding layer is coated on the outer side of the first injection molding layer; the conductive pins extend out of the second injection molding layer from the first end face of the second injection molding layer and extend outwards; the second injection molding layer is provided with a visible hole; the first injection molding layer can be exposed out of the second injection molding layer through the visual hole. The utility model discloses a set up the visual hole on the layer is moulded plastics to the second, can audio-visually see through the visual hole and observe the second and mould plastics the first layer of moulding plastics of in situ portion to judge the double-deck injection moulding structure on layer is moulded plastics to the first layer of moulding plastics and second of judging the plug, solved and need provide the problem that the plug just can be judged to double-deck moulding plastics after additional power cord is disassembled, improved inspection efficiency and save material.

Description

Power line plug

Technical Field

The utility model relates to an electrical apparatus makes technical field, in particular to power cord plug.

Background

With the development of science and technology, electrical appliances become an indispensable part of life, people pay more and more attention to the electricity safety, and the corresponding electrical appliance safety inspection is of great importance.

At present, a power line plug formed by double-layer injection molding appears on the market, different requirements of users can be met by changing the materials of an inner injection molding layer and an outer injection molding layer, but the power line plug with the double-layer structure needs to provide an additional power line for disassembly during shipment inspection to confirm that the plug is double-layer injection molding, the inspection efficiency is low, and materials are consumed; in addition, the user cannot intuitively recognize whether the product is a power plug having a double-layer structure when purchasing the product.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a power cord plug to solve and need provide among the prior art additional power cord and disassemble the problem that the plug just can be judged to double-deck moulding plastics after.

In order to solve the technical problem, the utility model adopts the following technical scheme:

according to an aspect of the utility model, the utility model provides a power cord plug, this power cord plug includes: a conductive pin; a power line, one end of which is electrically connected with the conductive pin; the first injection molding layer is coated at the joint of the conductive pin and the power line and fixes the conductive pin and the power line; the second injection molding layer is coated on the outer side of the first injection molding layer and provided with a first end face, and the conductive pins extend out of the second injection molding layer from the first end face and extend outwards; the second injection molding layer is provided with a visible hole, and the first injection molding layer can be exposed out of the second injection molding layer through the visible hole.

In some embodiments of the present application, the visual hole is opened on the first end surface of the second injection molding layer.

In some embodiments of the present application, the viewing aperture is formed in a peripheral sidewall of the second injection molded layer.

In some embodiments of the present application, the two viewing holes are respectively disposed on two opposite sidewalls of the second injection molding layer.

In some embodiments of the present application, the color of the surface of the first injection molding layer at the visual hole is different from the color of the outer surface of the second injection molding layer.

In some embodiments of the present application, the first injection molding layer and the second injection molding layer are made of materials with different colors.

In some embodiments of the present application, the power cord plug further comprises an internal frame; the conductive pins penetrate through and are fixed on the inner frame; the first injection molding layer and the inner frame are integrally molded; the second injection molding layer is coated on the outer side of the inner frame.

In some embodiments of the present application, the visual hole is opened in the outside of interior frame, the colour of interior frame with the colour of second layer surface of moulding plastics is different.

In some embodiments of this application, the visual hole set up in the inner tower with the junction on first layer of moulding plastics, the colour of inner tower with the colour of first layer surface of moulding plastics is different.

In some embodiments of the present application, first mould plastics the outer wall go up protruding be equipped with the bellying that the visible hole is relative, the bellying stretch into in the visible hole, just the surface of bellying with the surface parallel and level on layer is moulded plastics to the second.

According to the above technical scheme, the embodiment of the utility model provides an at least have following advantage and positive effect:

in the power cord plug provided by the embodiment of the utility model, the first injection molding layer inside the second injection molding layer can be visually observed through the visible hole by arranging the visible hole on the second injection molding layer, so that the plug is judged to be a double-layer injection molding structure with the first injection molding layer and the second injection molding layer, the problem that the plug can be judged to be double-layer injection molding after an additional power cord is required to be disassembled is solved, the inspection efficiency is improved, and materials are saved; and meanwhile, the user can conveniently and intuitively recognize and judge the purchase.

Drawings

Fig. 1 is a schematic structural view of a power cord plug according to a first embodiment of the present invention.

Fig. 2 is a sectional view of fig. 1.

FIG. 3 is a schematic view of the structure of FIG. 1 with the second injection molded layer removed.

Fig. 4 is an exploded view of fig. 3.

Fig. 5 is a schematic structural view of a power cord plug according to a second embodiment of the present invention.

FIG. 6 is a schematic view of the structure of the embodiment of FIG. 5 with the second injection molded layer removed.

FIG. 7 is a schematic view of another embodiment of FIG. 5 with the second injection molded layer removed.

FIG. 8 is a schematic view of the structure of the alternate embodiment of FIG. 5 with the second injection molded layer removed.

Fig. 9 is a schematic structural view of a power cord plug according to a third embodiment of the present invention.

The reference numerals are explained below:

1. a conductive pin; 2. a power line; 3. a first injection molded layer; 31. a boss portion; 4. a second injection molded layer; 41. a first end face; 42. a visual aperture; 5. an inner frame.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

At present, a power line plug adopting double-layer injection molding appears in the market, and different requirements of users can be met by changing the materials of an inner injection molding layer and an outer injection molding layer. However, when the double-layer power line plug is in shipment inspection, an additional power line needs to be provided for disassembly to confirm that the plug is double-layer injection molding, so that the inspection efficiency is low and the material consumption is high; in addition, the user cannot intuitively recognize whether the product is a power plug having a double-layer structure when purchasing the product.

The power cord plug according to an embodiment of the present invention will be described below by taking an Italian-type general plug structure as an example.

Fig. 1 is a schematic structural view of a power cord plug according to a first embodiment of the present invention. Fig. 2 is a sectional view of fig. 1. FIG. 3 is a schematic view of the structure of FIG. 1 with the second injection molded layer removed. Fig. 4 is an exploded view of fig. 3.

Referring to fig. 1 to 4, a power cord plug according to an embodiment of the present invention includes a conductive pin 1, a power cord 2, a first injection molding layer 3, and a second injection molding layer 4.

The conductive pins 1 are made of metal and can be used for external power supplies such as external connection sockets and the like to supply power to corresponding electric equipment. The conductive pin 1 may be provided in plurality. The conductive pin 1 may include three terminals, a ground conductive pin, a live conductive pin, and a neutral conductive pin, or only two terminals, a live conductive pin and a neutral conductive pin. It should be noted that the distribution positions of the conductive pins 1 are not limited, so as to form various plug structures of common models.

Referring to fig. 2, one end of the power line 2 is electrically connected to each conductive pin 1, and the other end is electrically connected to the corresponding electrical device. When the conductive pin 1 is connected to the jack of the socket in a working state, the power line 2 can be electrified to supply power to corresponding electric equipment.

Referring to fig. 2 to 4, the first injection molding layer 3 is coated on the connection between the conductive pin 1 and the power line 2 and fixes the two. The first injection molding layer 3 can be integrally formed outside the connection position of the conductive pin 1 and the power line 2 by injection molding.

Referring to fig. 1 and 2, the second injection molding layer 4 covers the first injection molding layer 3. The second injection molding layer 4 can be integrally molded on the outer periphery of the first injection molding layer 3 by a two-shot injection molding method. And then the power cord plug forms an inner-outer double-layer injection molding structure, so that the safety of the power cord plug is higher. The second injection-molded layer 4 may be injection-molded from the same material as the first injection-molded layer 3, or may be injection-molded from a different material.

The second injection layer 4 is provided with a visual hole 42. The first injection molding layer 3 can be exposed out of the second injection molding layer 4 through the visible hole 42, so that an inspector or a user can visually observe the first injection molding layer 3 inside the second injection molding layer 4 through the visible hole 42, and the plug is judged to be of a double-layer injection molding structure with the first injection molding layer 3 and the second injection molding layer 4.

It is understood that the visualization apertures 42 may be circular, triangular, square, or any polygonal configuration.

Referring to fig. 1, in some embodiments, the visible holes 42 may be formed on the peripheral sidewall of the second molding layer 4.

In some embodiments, there are two visualization holes 42. Two viewing apertures 42 are provided in two opposing side walls, e.g. front and rear side walls, of the second molded layer 4. The viewing aperture 42 is also visible to the user from different directions through the second injection molded layer 4 when the conductive pin 1 is inserted into a receptacle of an external socket, so as to distinguish the power cord plug from a conventional power cord plug.

In some embodiments, the second molding layer 4 has a first end surface 41, and the conductive pin 1 penetrates the second molding layer 4 from the first end surface 41 and extends outward. The viewing aperture 42 may also open onto the first end face 41 of the second injection-molded layer 4. When the power plug is plugged in for use, the first end face 41 of the second injection molding layer 4 is in contact with a socket, and the visual hole 42 can be hidden in the contact surface of the first end face 41 and the socket without influencing the appearance of the power plug.

In some embodiments, the first injection molding layer 3 and the second injection molding layer 4 are formed by injection molding with materials of different colors, so that the first injection molding layer 3 and the second injection molding layer 4 have appearance surfaces of different colors. Therefore, the color of the surface of the first injection molding layer 3 at the visible hole 42 is different from the color of the outer surface of the second injection molding layer 4, so that the distinguishing degree of the first injection molding layer 3 and the second injection molding layer 4 is improved, and the distinguishing is more clear when the first injection molding layer 3 and the second injection molding layer 4 are observed at the visible hole 42.

It will be appreciated that the surface colour of the first moulded layer 3 at the viewing aperture 42 and the colour of the outer surface of the second moulded layer 4 may also be differentiated by the addition of a surface coating of a different colour.

Referring to fig. 3 and 4, in some embodiments, the power cord plug further includes an inner frame 5. The inner frame 5 is provided with through holes for the conductive pins 1 to pass through and fix. The inner frame 5 may be pre-formed of a non-conductive material such as plastic. Each conductive pin 1 is arranged in advance and fixed on the inner frame 5 according to the requirements of plugs of different models, and then is connected with the power line 2, so that the conductive pins 1 and the power line 2 which are electrically connected are integrally placed into an injection mold, and injection molding of the first injection molding layer 3 is carried out. The first injection molding layer 3 and the inner frame 5 after injection molding are formed into a whole. The second injection molding layer 4 of the secondary injection molding is coated on the outer side of the inner frame 5.

Fig. 5 is a schematic structural diagram of a power cord plug according to a second embodiment of the present invention. FIG. 6 is a schematic view of the structure of the embodiment of FIG. 5 with the second injection molded layer removed.

Referring to fig. 5 and 6, in some embodiments, a protrusion 31 is protruded on the outer wall of the first injection-molded layer 3 to be opposite to the visual hole 42 of the second injection-molded layer 4.

The protrusion 31 extends into the viewing hole 42. Therefore, when the boss 31 is viewed from the inside of the visual hole 42, it can be recognized that the power cord plug has a double-layer injection molding structure. It will be appreciated that the surface colour of the protrusions 31 may be different from the colour of the outer surface of the second moulded layer 4, or the surface texture of the protrusions 31 may be different from the texture of the outer surface of the second moulded layer 4, to distinguish the protrusions 31 from the second moulded layer 4.

In the second injection molded layer 4, the protruding portion 31 can be inserted into the visible hole 42 after the second injection molding, and plays a role in sealing the gap between the first injection molded layer 3 and the second injection molded layer 4.

Referring to fig. 5, in some embodiments, the outer surface of the protrusion 31 is flush with the outer surface of the second injection-molded layer 4, so that the flatness of the plug surface is not affected, and the overall appearance of the power cord plug is maintained.

Referring to fig. 7 in combination with fig. 5, in some embodiments, the visible hole 42 may be opened on the outer side of the inner frame 5, and when the inner frame 5 is observed through the visible hole 42 on the second injection molding layer 4, it can be identified that the power plug is a double injection molding structure. Accordingly, the protrusion 31 may be protruded from the inner frame 5 to distinguish the first injection-molded layer 3 from the second injection-molded layer 4 by the protrusion 31.

It will be appreciated that in some embodiments the colour of the inner shelf 5 is different to the colour of the outer surface of the second moulded layer 4 to distinguish the inner shelf 5 from the second moulded layer 4 more clearly when viewed at the enhanced viewing aperture 42.

Referring to fig. 8 in combination with fig. 5, in some embodiments, the visible hole 42 is formed at a connection portion between the inner frame 5 and the first injection molding layer 3, and a color of the inner frame 5 is different from a color of an outer surface of the first injection molding layer 3, so that not only the double-layer injection molding structure of the power plug can be observed from the visible hole 42, but also the inner frame 5 can be observed therein. Accordingly, the protrusion 31 may be located at the connection between the inner frame 5 and the first injection-molded layer 3, so that the first injection-molded layer 3 and the second injection-molded layer 4 are distinguished by the protrusion 31.

Referring to fig. 9 in conjunction with fig. 5, the power plug of the present embodiment has substantially the same structure as the power plug of fig. 5, except that the structure of the protrusion 31 is different.

In this embodiment, the outer surface of the boss 31 is not flush with the outer surface of the second injection molded layer 4, and the outer surface of the boss 31 is lower than the outer surface of the second injection molded layer 4. The first and second injection-molded

layers

3 and 4 can also be distinguished by the layering or different colors of the outer surfaces of the protrusions 31 and the outer surfaces of the second injection-molded layer 4.

Based on the technical scheme, the embodiment of the utility model provides an at least, following advantage and positive effect have:

in the power cord plug provided by the embodiment of the utility model, the visual hole 42 is formed on the second injection molding layer 4, the first injection molding layer 3 inside the second injection molding layer 4 can be visually observed through the visual hole 42, so that the plug is judged to be a double-layer injection molding structure with the first injection molding layer 3 and the second injection molding layer 4, the problem that the plug can be judged to be double-layer injection molding after an additional power cord is required to be disassembled is solved, the inspection efficiency is improved, and materials are saved; and meanwhile, the user can conveniently and intuitively recognize and judge the purchase.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A power cord plug, comprising:

a conductive pin;

a power line, one end of which is electrically connected with the conductive pin;

the first injection molding layer is coated at the joint of the conductive pin and the power line and fixes the conductive pin and the power line; and

the second injection molding layer is coated on the outer side of the first injection molding layer;

the second injection molding layer is provided with a first end face, and the conductive pins extend out of the second injection molding layer from the first end face and extend outwards; the second injection molding layer is provided with a visible hole, and the first injection molding layer can be exposed out of the second injection molding layer through the visible hole.

2. The power cord plug of claim 1, wherein the viewing aperture opens onto the first end face of the second injection molded layer.

3. The power cord plug of claim 1, wherein said viewing aperture is formed in a peripheral sidewall of said second molded layer.

4. The power cord plug of claim 3, wherein said viewing aperture is provided in two and separated from two opposing sidewalls of said second molded layer.

5. The power cord plug of claim 1, wherein a surface of the first molded layer at the viewing aperture has a color different from a color of an outer surface of the second molded layer.

6. The power cord plug as claimed in claim 5, wherein the first injection molded layer and the second injection molded layer are made of different colors.

7. The power cord plug of claim 1, further comprising an internal frame;

the conductive pins penetrate through and are fixed on the inner frame; the first injection molding layer and the inner frame are integrally molded; the second injection molding layer is coated on the outer side of the inner frame.

8. The power cord plug of claim 7, wherein the viewing aperture opens on an exterior side of the inner frame, the inner frame having a color different from a color of an exterior surface of the second injection molded layer.

9. The power cord plug of claim 7, wherein the viewing aperture is formed at a junction of the inner frame and the first injection molded layer, the inner frame having a color different from a color of an outer surface of the first injection molded layer.

10. The power cord plug as claimed in claim 1, wherein the first injection molded layer has a protruding portion protruding from an outer wall thereof opposite to the viewing hole, the protruding portion extends into the viewing hole, and an outer surface of the protruding portion is flush with an outer surface of the second injection molded layer.