CN209766838U

CN209766838U - Changeover plug and power adapter

Info

Publication number: CN209766838U
Application number: CN201821555427.8U
Authority: CN
Inventors: 张勇
Original assignee: GAOYIDA TECHNOLOGY (SHENZHEN) Co Ltd
Current assignee: GAOYIDA TECHNOLOGY (SHENZHEN) Co Ltd
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2019-12-10
Anticipated expiration: 2028-09-20

Abstract

The utility model provides a changeover plug and power adapter. The conversion plug comprises a PIN needle and an integral injection molding part formed by surrounding the lower part of the PIN needle through injection molding, and the injection molding part comprises a jack communicated with the PIN needle. Adopt the utility model discloses a changeover plug, power adapter processing method and changeover plug and power adapter have simplified changeover plug and power adapter's structure, have reduced the processing cost.

Description

Changeover plug and power adapter

Technical Field

The utility model relates to a power adapter technical field, concretely relates to changeover plug and power adapter.

Background

In order to be able to adapt to the power adapter plug standards of different countries by using the same power adapter, a plurality of convertible plugs are usually provided for one power adapter.

In the prior art, as shown in fig. 10, fig. 10 is an exploded structural schematic view of a conventional conversion plug, the conversion plug is formed by fixedly assembling the bottom of a PIN 33 through an upper shell 31 and a lower shell 32, so that the structure is complex and large in volume, on one hand, a relatively large cost needs to be added, and on the other hand, the conversion plug is not carried; in addition, because the upper and lower shells are formed by assembling, the two parts are separated due to the action of external force, so that the risk of damage is increased on one hand, and potential safety hazards are easily caused on the other hand.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a changeover plug and power adapter.

The utility model discloses the first aspect provides a change over plug, change over plug includes the PIN needle and surrounds the lower part of PIN needle is through the holistic portion of moulding plastics that forms of moulding plastics, the portion of moulding plastics include with the jack of PIN needle intercommunication.

Further, when the conversion plug is a plurality of conversion plugs, the jack specification of each conversion plug in the plurality of conversion plugs is consistent, so that the plurality of conversion plugs correspond to the same power adapter body.

Further, the injection molding part further comprises a first positioning part used for positioning with the assembled power adapter body.

Further, the first positioning portion is a first clamping portion in a clamping assembly used for being clamped with the power adapter body.

A second aspect of the present invention provides a power adapter, which includes a power adapter body and a conversion plug;

The conversion plug comprises a PIN needle and an integral injection molding part formed by surrounding the lower part of the PIN needle through injection molding, and the injection molding part comprises a jack communicated with the PIN needle;

The power adapter body comprises a slot for accommodating at least part of the injection molding part; the power adapter body still includes that one end is located electrically conductive inserted sheet in the slot, works as the power adapter body with when changeover plug assembles together, electrically conductive inserted sheet inserts the jack and with the laminating of PIN needle.

Further, the injection molding part also comprises a first positioning part; the power adapter body further comprises a second positioning part which is used for detachably positioning the injection molding part and the power adapter body after assembly.

Further, when a plurality of conversion plugs are provided, the plurality of conversion plugs correspond to the same power adapter body, and the jack specifications of each conversion plug of the plurality of conversion plugs are consistent.

Further, when the conversion plug is assembled with the power adapter body, a gap is formed between the first portion of the outer surface of the conversion plug and the second portion of the inner surface of the slot.

Further, the first positioning part is a first positioning projection arranged at the first end of the first part; and/or the second positioning part is a second positioning bulge arranged at the second tail end of the second part.

further, the first part is a first side surface of the injection molding part; the second portion is a second side of the slot.

Further, one of the first side surface and the second side surface forms a guide groove in the fitting direction; the other of the first side surface and the second side surface forms a guide strip matched with the guide groove; when the conversion plug is assembled with the power adapter body, the gap exists between the opposite surfaces of the guide groove and the guide strip.

Further, the first positioning part is a first positioning protrusion arranged at the first end of the guide groove; and/or the second positioning part is a second positioning bulge arranged at the second tail end of the conducting bar.

Furthermore, the other end of the conductive elastic sheet is provided with an elastic part so as to reinforce the joint of the conductive elastic sheet and the PIN needle.

Further, the first positioning portion is a first clamping portion in a clamping assembly used for being clamped with the power adapter body; the second positioning part is used for being connected with a second clamping part in a clamping assembly clamped by the conversion plug.

Furthermore, the jack is located on the side face of the injection molding part, and the conductive elastic sheet is located at the bottom opposite to the opening end of the side face of the slot.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments and the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic flow chart of an embodiment of a method for injection molding a lower portion of a PIN according to the present invention.

FIGS. 2A-2D are schematic structural diagrams of PIN needles under various safety regulations.

Fig. 3A-3D are schematic structural views of the adaptor plug under various safety standards after the first injection molding is completed.

Fig. 4A-4D are schematic structural views of the transition plug under various safety standards after the second injection molding.

Fig. 5 is a schematic structural diagram of the power adapter body and the adapter plug of the power adapter provided by the present invention after assembly.

Fig. 6A is a schematic structural diagram of the power adapter provided by the present invention after the conversion plug and the power adapter body are separated, wherein the conversion plug shows a structure facing the power adapter body; fig. 6B is the structure diagram of the power adapter provided by the present invention after the conversion plug and the power adapter body are separated, wherein the conversion plug shows the structure of the back to the power adapter body.

Fig. 7 is a partially enlarged schematic view of a cross section of a power adapter plug according to an embodiment of the present invention.

Fig. 8 is a partially enlarged schematic view of a section of a guiding structure component of the power adapter according to the present invention.

Fig. 9 is a partially enlarged schematic view of the jack and the conductive elastic piece of the power adapter according to the present invention.

Fig. 10 is an exploded view of a conventional conversion plug.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The utility model provides a changeover plug, power adapter processing method and changeover plug, power adapter. Through the mode processing adapter plug of moulding plastics, simplified adapter plug's structure, make things convenient for adapter plug's carrying, the cost is reduced.

The embodiment of the utility model provides a conversion plug processing method, conversion plug processing method includes:

Performing injection molding on the lower part of the PIN needle to form an integral injection molding part surrounding the lower part of the PIN needle; wherein the injection molding part comprises a jack communicated with the PIN needle.

In some embodiments, when a plurality of conversion plugs correspond to the same power adapter body, in order to ensure that the plurality of conversion plugs can be applied to the same power adapter body, specifications (positions, sizes, and the like) of insertion holes of injection molding parts formed after injection molding of different PIN PINs need to be made consistent.

By adopting the method, the conversion plug is processed in an injection molding mode, so that the structure of the conversion plug is simplified, the conversion plug is convenient to carry, and the cost is reduced. In addition, the whole conversion plug is of an integrated structure due to the injection molding mode, so that the whole conversion plug is firmer; in addition, the risk of exposing the bottom of the PIN can be reduced, and therefore, the PIN is safer.

As shown in fig. 1, fig. 1 is a schematic flow chart of an embodiment of a method for injection molding a lower portion of a PIN according to the present invention. In some embodiments, the injection molding of the lower part of the PIN comprises the following method steps:

S11, placing the PIN needle into a first injection mold for first injection molding to form a first injection molding part located at the lower part of the PIN needle so as to position the PIN needle; wherein the first injection molding part comprises a jack communicated with the PIN needle.

FIGS. 2A-2D are schematic structural diagrams of PIN needles under various safety regulations. Fig. 3A-3D are schematic structural views of the adaptor plug under various safety standards after the first injection molding is completed.

As shown in fig. 2A to 2D and fig. 3A to 3D, each PIN11 is placed in a mold and then injection molding is performed to form a first injection molding part 121 located at the lower part of the PIN11, and the first injection molding part 121 is used for positioning the PIN11 (generally, 2 or 3 PINs, etc.); and forms a receptacle 13 communicating with PIN 11.

It should be noted that each country has different safety standards for plugs, such as: as shown in fig. 2A, a transition plug compliant with the united states (UL) regulations; as shown in fig. 2B, the plug is a European (EU) compliant adaptor plug; as shown in fig. 2C, a transition plug conforming to UK (UK) safety regulations; as shown in fig. 2D, is a transition plug compliant with australian (UL) regulations.

S12, placing the first injection molding part into a second injection mold to perform second injection molding to form a second injection molding part, wherein the second injection molding part comprises the jack.

As shown in fig. 4A-4D, fig. 4A-4D are schematic structural views of the adaptor plug under various safety standards after the second injection molding.

The finally formed second injection molding part 122 is the final injection molding part 12 of the conversion plug 10 surrounding the lower part of the PIN11 and the first injection molding part 121.

The second injection-molded part 122 includes the insertion hole 13 formed after the first injection-molding.

In some embodiments, the injection molding part further includes a first positioning portion, the first positioning portion is used for positioning the assembled conversion plug and the power adapter body, so as to prevent the assembled conversion plug and the power adapter body from being separated due to external force, and the first positioning portion and a second positioning portion, which are arranged behind the first positioning portion, cooperate with each other, may be various structural components for detachably and fixedly connecting the conversion plug and the power adapter body, such as: snap assemblies, screw and bolt hole assemblies, and the like.

As shown in fig. 6A and 6B, in some embodiments, the first positioning portion includes a first clamping portion 141 in a clamping assembly for clamping with the power adapter body 20.

Specifically, the first clamping portion 141 may be one of any structural components for clamping, such as: a snap groove and an elastic catch 141.

As shown in fig. 6A and 6B, in some embodiments, when the conversion plug and the power adapter body are assembled, it is necessary to reduce the surface contact therebetween as much as possible, so as to reduce the friction force generated by the contact, thereby making the assembling process smoother and more convenient.

Specifically, a gap may be formed between a first portion of the injection molded part 12 corresponding to the outer surface of the slot 21 of the power adapter body 20 and a second portion of the inner surface of the slot 21 after assembly, so as to reduce friction generated by surface contact during assembly of the two.

specifically, in some embodiments, the injection-molded part 12 may be configured to form the end cap 142 with a protrusion at least along the lateral direction, the lower surface of the protrusion is in frictional contact with the top surface 23 of the slot 21 for limiting, and the other surfaces form a gap during the assembly process, so as to reduce the generation of friction; or the bottom 143 of the injection molded part 12 is designed to contact the bottom surface of the insertion groove 21, and the other surfaces form a gap during the assembly process, etc.; or the end cap 142 and the bottom 143 of the injection molded part are in corresponding frictional contact with the insertion groove 21, and the side surfaces form a gap, etc.

In some embodiments, the first portion is a first side (one or both sides) of the injection molded part 12, and the second portion is a second side (one or both sides) of the socket; in order to provide a clearance fit between the first side of the injection molded part and the second side of the socket after assembly, the width of the injection molded part 12 in the transverse direction X may be slightly smaller than the width of the inside of the socket, so that a clearance may exist between the two during assembly.

as shown in fig. 6A, 6B, further, in some embodiments, the first side surface (one or both side surfaces) forms a guide slot 1412 (one or both guide slots) disposed along the assembly direction; a guide strip 2112 matched with the guide groove 1412 is formed at the second side surface of the slot 21 and extends along the transverse direction X at the position corresponding to the guide groove 1412; when assembled, the guide strip 2112 is inserted into the guide slot 1412 with a gap between the opposing surfaces, so that no frictional contact is generated. It should be noted that the guide groove is not limited to be provided on the first side surface, and may be provided in other desired orientations. It should be noted that the positions of the guide grooves and the guide bars can be interchanged.

Further, in some embodiments, after the conversion plug is assembled into the slot, since there is a gap between the first surface and the second surface, in order to enhance the connection strength between the assembled surfaces, at least one first positioning protrusion 1412A may be disposed at the end (which may be the extreme end or a position near the end) of the guide groove. The tail end refers to one end, far away from the power adapter body, of the injection molding part during assembly. Thus, when the two are assembled, the strength of the connection between the two can be increased by the limitation of the first positioning protrusion 1412A.

The following embodiments will be described in further detail with reference to the guide groove and the guide bar, the first positioning protrusion, and the like.

As shown in fig. 2A-2D, in some embodiments, due to different requirements of safety regulations of different countries on the specifications of PIN PINs, the distance between some PIN PINs may be small, and the distance between some PIN PINs is large, so that in order to enable the conversion plugs conforming to different safety regulations to be suitable for the same power adapter, for some PIN PINs with smaller or larger distances, a bent portion 111 extending to both sides may be formed at the lower portion of the PIN11, so as to reduce or increase the distance between two PIN PINs, and thus, a plurality of conversion plugs may share the same power adapter body.

Specifically, when the distance between the PIN PINs of the first portion of the plurality of conversion plugs is less than the distance between the PIN PINs of the second portion of the conversion plugs and the PIN11 PINs of the second portion of the conversion plugs; the lower part of the PIN11 of the conversion plug 10 of the first part forms a bent part 111 extending to two sides far away from each other; or the lower part of the PIN of the conversion plug of the second part forms a bent part extending to both sides close to each other. Such as: the interval between the PIN PINs 11 of the AU or UL is smaller than that of the PIN PINs of other countries, and thus the bent portions 111 extending toward both sides away from each other may be formed. On the other hand, the PIN PINs of the conversion plug with the spacing between the PIN PINs larger than the spacing between other PIN PINs may be formed with bent portions (not shown) extending toward two sides close to each other.

In some embodiments, the present invention further provides a power adapter processing method, which includes any one of the above methods for processing a conversion plug.

For the related description of the processing method of the conversion plug, reference is made to the above embodiments, and the description is not repeated here.

As shown in fig. 1-6A and 6B, in some embodiments, the present invention further provides a conversion plug 10, where the conversion plug 10 includes a PIN11 and an integral injection molding part 12 formed by injection molding and surrounding a lower portion of the PIN, and the injection molding part 12 includes a receptacle 13 communicating with the PIN 11.

Due to the fact that the conversion plug is adopted and processed in an injection molding mode, the structure of the conversion plug is simplified, the conversion plug is convenient to carry, and cost is reduced. In addition, the conversion plug is integrally formed into an integral structure due to the injection molding mode, so that the whole conversion plug is firmer; in addition, the risk of exposing the bottom of the PIN can be reduced, and therefore, the PIN is safer.

As shown in fig. 7, in some embodiments, the first positioning portion may include a first clamping portion 141 of one of clamping components for clamping with the power adapter body 20, and in some embodiments, the first clamping portion 141 is an elastic clamp 141.

As shown in fig. 2A to 2D, in some embodiments, when the conversion plug 10 includes a plurality of conversion plugs 10, and distances between the PIN PINs 11 of the plurality of conversion plugs 10 are different from each other, the lower portions of the PIN PINs of the partial conversion plugs of the plurality of conversion plugs 10 form bent portions 111 extending to both sides.

as shown in fig. 6A and 6B, in some embodiments, the present invention further provides a power adapter, which includes a power adapter body 20 and a conversion plug 10.

The conversion plug 10 comprises a PIN needle 11 and an integral injection molding part 12 formed by injection molding and surrounding the lower part of the PIN needle, wherein the injection molding part 12 comprises a jack 13 communicated with the PIN needle 11.

The power adapter body 20 comprises a slot 21 formed to receive at least a portion of the conversion plug 10; the power adapter body 20 comprises a conductive elastic sheet 22, one end of the conductive elastic sheet 22 is positioned in the slot 21, and the other end of the conductive elastic sheet 22 is positioned in the power adapter body 20 and is electrically connected with an internal circuit; after the power adapter body 20 and the conversion plug 10 are assembled, the conductive elastic sheet 22 is inserted into the jack 13 and attached to the PIN11, so that the conductive communication between the power adapter and the conversion plug can be realized.

It should be noted that the side of the slot 21 corresponding to the insertion start end of the conversion plug is an open end 24, so that the conversion plug 10 is inserted along the slot 21 from the open end 24 to the bottom of the slot 21.

In some embodiments, the injection molded part 12 further comprises a first positioning part; and/or the power adapter body 20 further comprises a second positioning part; the adapter plug is used for positioning the adapter plug and the power adapter body after assembly, so that the adapter plug and the power adapter body are prevented from being separated from each other under the action of external force after the adapter plug and the power adapter body are assembled.

By adopting the power adapter, the conversion plug is processed in an injection molding mode, so that the structure of the conversion plug is simplified, the conversion plug is convenient to carry, and the cost is reduced. In addition, the conversion plug is integrally formed into an integral structure due to the injection molding mode, so that the whole conversion plug is firmer; in addition, the risk of exposing the bottom of the PIN can be reduced, and therefore, the PIN is safer.

As shown in fig. 7, in some embodiments, the first positioning portion includes a first clamping portion 141 of one of any structure of clamping components for clamping with the power adapter body 20; the second positioning portion includes a second clamping portion 211 of another one of any structural components for clamping, which is matched with the first clamping portion 141. Specifically, in the present embodiment, the second engaging portion 211 is an engaging groove 211, and the first engaging portion 141 is an elastic engaging block 141. The positioning is carried out through the matching of the first positioning part and the second positioning part.

As shown in fig. 8, in some embodiments, when the conversion plug and the power adapter body are assembled, it is desirable to reduce contact therebetween as much as possible, thereby reducing friction therebetween due to the contact.

specifically, a gap can be formed between a first part of the injection molding part corresponding to the outer surface of the slot and a second part of the inner surface of the slot after assembly, so that the friction force generated by surface contact in the assembly process of the injection molding part and the slot can be reduced.

As shown in fig. 6A and 6B, in particular, in some embodiments, the injection-molded part 12 may be configured to form an end cap 142 having a protrusion at least along a lateral direction, and the lower surface of the protrusion is in frictional contact with the top surface 23 of the slot 21 for limiting, while the other surfaces form a gap during the assembly process, so as to reduce the generation of friction; or the bottom 143 of the injection molded part 12 is brought into contact with the bottom surface of the insertion groove 21 while the other surfaces form a gap during the assembly process, etc.; or the end cap 142 and the bottom 143 may be in corresponding frictional contact with the power adapter body, with the sides forming a gap, etc.

In some embodiments, the first portion is a first side (one or both sides) of the injection molded part, and the second portion is a second side (one or both sides) of the socket; in order to enable the first side surface of the injection molding part and the second side surface of the slot to form clearance fit after assembly, the transverse X width of the injection molding part can be slightly smaller than the width inside the slot, so that a clearance can exist between the injection molding part and the slot in the assembly process.

As shown in fig. 6A, 6B, further, in some embodiments, the first side surface (one or both side surfaces) forms a guide slot 1412 (one or both guide slots) disposed along the assembly direction; a guide strip 2112 matched with the guide groove 1412 is formed by extending transversely X at the position of the second side surface of the slot corresponding to the guide groove; when assembled, the guide bar is inserted into the guide groove, and a gap exists between the two opposite surfaces, so that frictional contact is not generated. The guide groove is not limited to be provided on the side surface, and may be provided in other desired orientations.

Further, in some embodiments, after the conversion plug is assembled into the socket, since there is a gap between the first surface and the second surface, in order to enhance the connection strength between the assembled surfaces, at least one first positioning protrusion 1412A, which is a first positioning portion, may be disposed at an end (which may be the endmost end or a position near the end) of the guide groove 1412. The tail end refers to one end, far away from the power adapter body, of the injection molding part during assembly. Thus, when the two are assembled, the strength of the connection between the two can be increased by the limitation of the first positioning projection 1412A; and/or

In other embodiments, at least one second positioning protrusion 2112A (the end is the end of the slot away from the conversion plug when the slot is assembled) may be disposed at the end of the slot 21 corresponding to the portion, and the second positioning protrusion is also the second positioning portion. Thus, when the two are assembled, the strength of the connection between the two can be increased through the limitation of the second positioning bulge.

As further shown in fig. 6A and 6B, in some embodiments, when the conversion plug and the power adapter body are formed into the guide groove and the guide bar structure, respectively, the first end of the guide groove 1412 is provided with a first positioning protrusion 1412A, i.e., a first positioning portion; a second positioning protrusion 2112A, i.e., a second positioning portion, is provided at the end of the guide bar 2112; thus, after the conversion plug 10 and the power adapter body 20 are assembled, the second positioning protrusion is used for positioning. Specifically, can only set up first location arch, also can only set up second location arch, perhaps set up first location arch promptly, set up the second again and fix a position protrudingly, through the cooperation of the two for the location is more firm.

Because the first end is provided with the first positioning structure and/or the second end is provided with the second positioning structure, after the assembly between the first end and the second end is finished, the positioning structure is positioned at the positioning structure, and because a gap exists between the guide bar and the guide groove, the assembly process is smoother; after the adapter plug and the power adapter are completely assembled in place, the adapter plug and the power adapter are positioned through the positioning structure, so that the assembled adapter plug and the power adapter body are connected more firmly; therefore, the smooth assembly is realized and the connection between the assembled two is firmer through the simple structure.

As shown in fig. 9, fig. 9 is a partially enlarged schematic view of a section of the jack and the conductive elastic piece of the power adapter provided by the present invention. In some embodiments, an end of the conductive elastic piece 22 located in the power adapter body has an elastic portion 221, and after the conversion plug and the power adapter body are connected, the elastic portion is compressed and deformed by an acting force, so that the acting force pointing to the direction of the conversion plug is applied to the power adapter body to reinforce the joint of the jack and the PIN. The elastic part can be a spring, a spring sheet or an elastic plunger and the like which are developed now and developed in the future and have similar functions.

As shown in fig. 6A and 6B, in some embodiments, the conductive elastic piece 22 is located at the bottom opposite to the open end 24 of the side surface of the slot 21; in some embodiments, the corresponding insertion hole 13 is located on the side surface of the injection molding part 12, so that the conversion plug 10 is inserted into the insertion slot 21 from the direction of the side surface L, the chance of contact with the conductive elastic sheet during the assembly process can be reduced, and the safety or reliability during the assembly process can be increased.

Other relevant descriptions of the conversion plug refer to the above description of the conversion plug processing method, and are not repeated herein.

When an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, pre-formed integrally with the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, 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 belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The term "and/or" herein is merely an association relationship describing an associated object, and means that three relationships may exist, for example: a and/or B may mean that A is present alone, A and B are present simultaneously, and B is present alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The terms "first," "second," "third," and the like in the claims, in the description and in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and any variations thereof, are intended to cover non-exclusive inclusions. For example: a process, method, system, article, or robot that comprises a list of steps or modules is not necessarily limited to those steps or modules explicitly listed, but includes other steps or modules not explicitly listed or inherent to such process, method, system, article, or robot.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

It should be noted that, as those skilled in the art should also appreciate, the embodiments described in the specification are preferred embodiments, and the structures and modules involved are not necessarily essential to the invention.

It is right above the embodiment of the present invention provides a method for processing a change-over plug and a power adapter, but the description of the above embodiments is only used to help understanding the method and the core idea of the present invention, which should not be understood as a limitation of the present invention. The technical scope of the present invention is to cover the changes or substitutions easily conceivable by those skilled in the art according to the idea of the present invention.

Claims

1. A conversion plug is characterized by comprising a PIN needle and an integral injection molding part formed by surrounding the lower part of the PIN needle through injection molding, wherein the injection molding part comprises a jack communicated with the PIN needle.

2. The conversion plug according to claim 1, wherein when the conversion plug is a plurality of conversion plugs, the jack specifications of each conversion plug in the plurality of conversion plugs are consistent, so that the plurality of conversion plugs correspond to the same power adapter body.

3. The conversion plug defined in claim 1 or claim 2, wherein the injection-molded part further comprises a first positioning part for positioning with the assembled power adapter body.

4. The conversion plug as claimed in claim 3, wherein the first positioning portion is a first clamping portion of a clamping assembly for clamping with the power adapter body.

5. A power adapter is characterized by comprising a power adapter body and a conversion plug;

The power adapter body comprises a slot for accommodating at least part of the injection molding part; the power adapter body also comprises a conductive insertion sheet with one end positioned in the slot; when the power adapter body and the conversion plug are assembled together, the conductive insertion sheet is inserted into the jack and is attached to the PIN needle.

6. The power adapter as claimed in claim 5, wherein the injection molding part further comprises a first positioning part; the power adapter body further comprises a second positioning part which is used for detachably positioning the injection molding part and the power adapter body after assembly.

7. The power adapter as claimed in claim 5 or 6, wherein when there are a plurality of conversion plugs, the plurality of conversion plugs correspond to the same power adapter body, and the jack specification of each conversion plug of the plurality of conversion plugs is consistent.

8. The power adapter as claimed in claim 6, wherein when the conversion plug is assembled with the power adapter body, a gap is formed between the first portion of the outer surface of the conversion plug and the second portion of the inner surface of the socket.

9. The power adapter as claimed in claim 8, wherein the first positioning portion is a first positioning protrusion provided at a first end of the first portion; and/or the second positioning part is a second positioning bulge arranged at the second tail end of the second part.

10. The power adapter as described in claim 8, wherein the first portion is a first side of the injection molded part; the second portion is a second side of the slot.

11. The power adapter as claimed in claim 10, wherein one of the first side surface and the second side surface forms a guide groove in the fitting direction; the other of the first side surface and the second side surface forms a guide strip matched with the guide groove; when the conversion plug is assembled with the power adapter body, the gap exists between the opposite surfaces of the guide groove and the guide strip.

12. The power adapter as claimed in claim 11, wherein the first positioning portion is a first positioning protrusion provided at a first end of the guide groove; and/or the second positioning part is a second positioning bulge arranged at the second tail end of the conducting bar.

13. The power adapter as claimed in claim 9, wherein the other end of the conductive clip has an elastic portion to reinforce the fit between the conductive clip and the PIN.

14. The power adapter as claimed in claim 6, wherein the first positioning portion is a first clamping portion of a clamping assembly for clamping with the power adapter body; the second positioning part is used for being connected with a second clamping part in a clamping assembly clamped by the conversion plug.

15. The power adapter as claimed in claim 5 or 6, wherein the insertion hole is located on a side surface of the injection molding part, and the conductive elastic piece is located at a bottom opposite to an open end of the side surface of the insertion groove.