Thin two-pin power plug and travel socket

Abstract

The utility model discloses a thin-type two-pin power plug and a travel socket. The thin-type two-pin power plug comprises two pins, two pins and two pins, each pin is provided with a welding part, an embedding part and an inserting part which are sequentially arranged in the inserting direction; an electrical connection line; one end of the electric connecting wire extends out of two sections of leads, and conductive parts are exposed out of the end parts of the leads; the conductive parts are respectively and correspondingly welded on the welding parts of the two pins to form a first semi-finished product; an insulating inner mold; the insulating inner mold is fixed on the first semi-finished product in an injection molding manner, and one end of the electric connecting wire, the two sections of leads, the welding part of the conductive part and the welding part and the embedding part are embedded and fixed in the insulating inner mold to form a second semi-finished product; an insulating outer mold; and the insulating outer mold is fixed on the second semi-finished product through injection molding. Thus, the thickness of the power plug can be made thinner, the power plug can be plugged and used in a narrow space, and the problem that power taking in the narrow space is troublesome is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power plugs, in particular to a thin two-pin power plug and a travel socket. Background Art

[0002] Power plugs usually come in different specifications of two-pin power plugs and three-pin power plugs. The power plug at the other end of the wire matching a common travel socket is a two-pin power plug. There are mainly two structural forms of the two-pin power plugs in the prior art:

[0003] 1. A two-pin power plug usually includes a plug inner frame, two pins and an injection molded housing. The two pins are inserted and fixed on the plug inner frame, then the cable is connected to the wiring end of the pin, and then the injection molded housing is formed to wrap and position the connection parts of the plug inner frame, the cable and the pin by using the injection molded housing.

[0004] 2. A two-pin power plug usually includes an insulating inner frame, two pins and an injection molded housing. The pins are buried and fixed when the insulating inner frame is injection molded, then the cable is connected to the wiring end of the pin, and then the injection molded housing is formed to wrap and position the connection parts of the insulating inner frame, the cable and the pin by using the injection molded housing.

[0005] For the above two structural forms, the thickness of the injection molded housing needs to be designed thicker, and the overall thickness of the power plug is thicker, making it difficult to be applicable to narrow spaces. For example, the wall sockets preset on the wall are often blocked by items such as wall cabinets, sofas, televisions, and bookcases. Considering the occupied space layout, the gap reserved between the wall socket and these items is small (for example: after inserting and fixing a commonly used plug, there is only a little gap), which is not convenient for inserting another power plug into the gap to complete the plugging and power taking later. Moreover, these items are heavy and their placement positions are relatively fixed and not easy to move. If moving these items for plugging and power taking, it is also a helpless act.

[0006] Therefore, the applicant has studied a new technical solution to solve the above problems. Content of the Utility Model

[0007] In view of this, in view of the deficiencies existing in the prior art, the main purpose of the present utility model is to provide a thin two-pin power plug and a travel socket, which can make the thickness of the power plug thinner, meet the plugging and use of power plugs in narrow spaces, and solve the problem of troublesome power taking in narrow spaces.

[0008] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0009] A thin two-pin power plug includes:

[0010] Two pins; the pins have a welding part, an embedding part and a plugging part which are arranged in sequence along the insertion direction;

[0011] An electrical connection wire; one end of the electrical connection wire extends two wires, and the ends of the wires expose conductive parts; the conductive parts are respectively welded to the welding parts of the two pins to form a first semi-finished product;

[0012] An insulating inner mold; the insulating inner mold is injection-molded and fixed on the first semi-finished product, one end of the electrical connection wire, the two wires, the welding part of the conductive part and the welding place, and the embedding part are all embedded and fixed in the insulating inner mold to form a second semi-finished product; the plugging part extends upward from the top end of the insulating inner mold, the electrical connection wire extends from the rear end of the insulation, and a section to be coated is preset on the outer surface of the second semi-finished product corresponding to the electrical connection wire near the insulating inner mold;

[0013] An insulating outer mold; the insulating outer mold is injection-molded and fixed on the second semi-finished product, the insulating inner mold and the section to be coated are all embedded and fixed in the insulating outer mold, and the plugging part extends upward from the top end of the insulating outer mold.

[0014] As a preferred solution, a holding part for facilitating plugging and unplugging operations is arranged on the left side and / or the right side inside the insulating outer mold.

[0015] As a preferred solution, the holding part is an inner groove.

[0016] As a preferred solution, limiting parts are reserved at the top and bottom ends corresponding to the inner groove on the left side and / or the right side inside the insulating outer mold.

[0017] As a preferred solution, the hardness of the insulating inner mold is greater than that of the insulating outer mold.

[0018] As a preferred solution, the insulating inner mold includes a main body part and two extending parts integrally connected to the top of the main body part. The extending parts protrude upward from the top of the main body part and are arranged at intervals left and right. The embedding part is embedded and fixed in the corresponding extending part; the insulating outer mold is wrapped and fixed on the outer periphery of the extending part and the top of the extending part is exposed, and the top of the insulating outer mold is flush with the top of the extending part.

[0019] As a preferred solution, a through hole penetrating left and right is arranged on the welding part. The conductive part is welded to the left side and / or the right side of the welding part, and solder fills the through hole so that the conductive part is consolidated to the left side and the right side of the welding part via the solder.

[0020] As a preferred solution, glue filling notches are provided at the front and rear ends of the embedding part, and the glue filling notches are filled when the insulating inner mold is injection-molded.

[0021] As a preferred solution, the distance between the top and bottom of the insulating outer mold is defined as the first thickness, the distance between the top and bottom of the main body part is defined as the second thickness, the distance between the top of the main body part and the top of the insulating outer mold is defined as the third thickness, and the distance between the bottom of the main body part and the bottom of the insulating outer mold is defined as the fourth thickness. The second thickness is one-half to two-thirds times the first thickness, and the third thickness is less than the fourth thickness.

[0022] A travel socket includes a plug board and a power plug. The plug board is provided with power supply interfaces for supplying power to external devices. The power plug is a thin two-pin power plug as described in any one of the previous items, and the other end of the electric connection wire is connected to the plug board.

[0023] Compared with the prior art, the present utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solutions, it mainly sets the plug pins, the electric connection wire, the insulating inner mold and the insulating outer mold. Specifically, the electric connection wire is welded and fixed to the two plug pins to form a first semi-finished product, and then the insulating inner mold is injection-molded and fixed on the first semi-finished product to form a second semi-finished product, and then the insulating outer mold is injection-molded and fixed on the second semi-finished product, so that the thickness of the power plug can be made thinner. In this way, for wall sockets blocked by items such as wall cabinets, sofas, televisions, bookcases, etc., this power plug can extend into the narrow gap reserved between the item and the wall socket to easily obtain power without moving the item, meeting the use of the power plug in a narrow space and effectively solving the problem of troublesome power taking in a narrow space.

[0024] It is especially suitable for travel sockets. Usually, people bring their own travel sockets to meet the power taking needs of laptop computers, mobile phones or other electrical products. When used in hotels or other places, it is not restricted by the narrow gaps described above, and the power plug end of the travel socket can be extended into the narrow gap to easily obtain power.

[0025] To more clearly illustrate the structural features and functions of the present utility model, the present utility model will be described in detail below with reference to the drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional view of the thin two-pin power plug according to the embodiment of the present utility model;

[0027] Figure 2 is a cross-sectional view of the thin two-pin power plug according to the embodiment of the present utility model;

[0028] Figure 3 Another cross-sectional view of the thin two-pin power plug according to an embodiment of the present utility model;

[0029] Figure 4 Exploded view of the thin two-pin power plug according to an embodiment of the present utility model;

[0030] Figure 5 is Figure 4 Partial enlarged view of;

[0031] Figure 6 Process diagram of manufacturing the thin two-pin power plug according to an embodiment of the present utility model;

[0032] Figure 7 Another implementation situation diagram of welding the conductive part to the inner side of the pin;

[0033] Figure 8 Side view of the thin two-pin power plug according to an embodiment of the present utility model;

[0034] Figure 9 Application state diagram of a travel socket according to an embodiment of the present utility model. Detailed implementation manners

[0035] Please refer to Figures 1 to 9 as shown, which shows the specific structure of an embodiment of the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0037] A thin two-pin power plug includes: two pins 10, an electrical connecting wire 20, an insulating inner mold 30, and an insulating outer mold 40.

[0038] In this embodiment, both of the two pins 10 are in flat sheet shape, and can be hardware stamping sheets. The pin 10 has a welding part 11, a buried part 12, and a plugging part 13 arranged in sequence along the insertion direction of the pin 10. A through hole 111 penetrating left and right is provided on the welding part 11 of the pin 10, and glue filling notches 121 are provided at the front and rear ends of the buried part 12.

[0039] One end of the electrical connecting wire 20 extends out two wires 21, and a conductive part 211 is exposed at the end of the wire 21; the conductive parts 211 are respectively welded to the welding parts 11 of the two pins 10 to form a first semi-finished product. AsFigure 5 , Figure 7 As shown in Figure 7 , the conductive part 211 is welded to the left side and / or the right side of the welding part 11, and the solder 100 fills the through hole 111, so that the conductive part 211 is consolidated to the left side and the right side of the welding part 11 via the solder 100.

[0040] The insulating inner mold 30 is injection-molded and fixed on the first semi-finished product. When the insulating inner mold 30 is injection-molded, it fills the glue filling notch 121. In this way, it is beneficial to improve the bonding stability between the insulating inner mold 30 and the first semi-finished product, and it is also beneficial to accurately control the positioning of the two pins 10. One end of the electrical connection line 20, two wire segments 21, the welding part between the conductive part 211 of the wire 21 and the welding part 11 of the pin 10, and the embedding part 12 of the pin 10 are all embedded and fixed in the insulating inner mold 30 to form a second semi-finished product; the plugging part 13 extends upward from the top end of the insulating inner mold 30, and the electrical connection line 20 extends out from the rear end of the insulation. A section to be coated is preset on the second semi-finished product corresponding to the outer surface of the electrical connection line 20 close to the insulating inner mold 30. The insulating inner mold 30 includes a main body part 31 and an extension part 32 integrally connected to the top of the main body part 31. The extension part 32 protrudes upward from the top of the main body part 31. The embedding part 12 of the pin 10 is embedded and fixed in the extension part 32. There are two extension parts 32 arranged at intervals left and right, which respectively correspond to the embedding parts 12 of the two pins 10, and the embedding parts 12 of the pins 10 are embedded and fixed in the corresponding extension parts 32.

[0041] The insulating outer mold 40 is injection-molded and fixed on the second semi-finished product. The insulating inner mold 30 and the section to be coated are both embedded and fixed in the insulating outer mold 40, and the plugging part 13 of the pin 10 extends upward from the top end of the insulating outer mold 40. A holding part for facilitating plugging and unplugging operations is arranged on the left side and / or the right side inside the insulating outer mold 40. The holding part is an inner groove, that is, inner grooves 41 are arranged on the left side and / or the right side inside the insulating outer mold 40. Limiting parts are reserved around the inner grooves 41 on the left side and / or the right side inside the insulating outer mold 40, and at least the top and bottom ends of the inner grooves 41 are reserved with limiting parts, which is convenient for the operation force during plugging and unplugging, and it is easier to plug and unplug. The insulating outer mold 40 is wrapped and fixed on the outer periphery of the extension part 32 and the top of the extension part 32 is exposed, and the top of the insulating outer mold 40 is flush with the top of the extension part 32.

[0042] Generally, the hardness of the insulating inner mold 30 is greater than that of the insulating outer mold 40. By using the relatively hard insulating inner mold 30, a smaller size can meet the wrapping and positioning requirements for the first semi-finished product, and the size control of the insulating inner mold 30 is better. Moreover, the insulating outer mold 40 is made of a rubber material with relatively lower hardness, which is convenient for better meeting the shape design, appearance effect, and tactile feel of the power plug. In addition, the distance between the top and the bottom of the insulating outer mold 40 is defined as the first thickness H1, the distance between the top and the bottom of the main body 31 of the insulating inner mold 30 is defined as the second thickness H2, the distance between the top of the main body 31 of the insulating inner mold 30 and the top of the insulating outer mold 40 is defined as the third thickness H3, and the distance between the bottom of the main body 31 and the bottom of the insulating outer mold 40 is defined as the fourth thickness H4. The second thickness H2 is one-half to two-thirds times the first thickness H1, the third thickness H3 is less than the fourth thickness H4, and generally, the third thickness H3 is one-half to two-thirds times the fourth thickness H4. Due to the setting of the insulating inner mold 30, the thickness of the insulating outer mold 40 is thinner. During injection molding, the forming yield rate of the insulating outer mold 40 for the power plug can be higher than that of the injection molded shell of a traditional power plug because the shrinkage and deformation amount is small, which is beneficial to the shape control yield rate of the power plug product. Moreover, with the double injection molding and wrapping positioning of the insulating inner mold 30 and the insulating outer mold 40, external humid air and moisture are not easily introduced into the power plug, which is beneficial to the stable and reliable use quality of the power plug. Therefore, the durability of this type of power plug is better.

[0043] Next, a travel socket is provided, which includes a socket board A1 and a power plug A2. The socket board A1 is provided with power supply interfaces A11 for supplying power to external devices. The power supply interfaces can be two-hole sockets, three-hole sockets, USB interfaces, etc., and the number of power supply interfaces provided on the socket board is not limited. The power supply interfaces provided on the socket board are mainly to meet people's power-taking needs, and the power supply interfaces can be common interfaces or certain special interfaces. The power plug is a thin-type two-pin power plug as described in any one of the above, and the other end of the electric connecting wire 20 is connected to the socket board A1. The connection method between the electric connecting wire 20 and the socket board A1 can be a fixed connection or a detachable connection (such as a pluggable disconnection). As Figure 9 shown, the power plug A2 is inserted into the gap B3 between the wall cabinet B1 and the wall socket B2 to easily obtain power.

[0044] The design focus of the present utility model lies in that mainly through the settings of the pin 10, the electrical connection wire 20, the inner insulating mold 30 and the outer insulating mold 40. Specifically, the electrical connection wire 20 is welded and fixed to the two pins 10 to form a first semi-finished product, and then the inner insulating mold 30 is injection-molded and fixed on the first semi-finished product to form a second semi-finished product, and then the outer insulating mold 40 is injection-molded and fixed on the second semi-finished product, so that the thickness of the power plug can be made thinner, and a mini ultra-thin two-wire small plug can be obtained. In this way, for the wall socket blocked by items such as wardrobes, sofas, televisions, bookcases, etc., this power plug can extend into the narrow gap reserved between the item and the wall socket to easily obtain power without moving the item, meeting the use of the power plug for plugging and unplugging in a narrow space, and effectively solving the problem of troublesome power acquisition in a narrow space.

[0045] It is particularly applicable to travel sockets. Usually, people prepare their own travel sockets to facilitate the power acquisition needs of laptop computers, mobile phones or other electrical products. When used in hotels or other places, there is no need to be restricted by the narrow gaps described above, and the power plug end of the travel socket can be extended into the narrow gap to easily obtain power.

[0046] The above description is only a preferred embodiment of the present utility model, and does not impose any limitation on the technical scope of the present utility model. Therefore, any minor modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A thin two-pin power plug, characterized in that, It includes: Two pins; the pins have a welding part, an embedding part, and a plugging part arranged in sequence along the insertion direction. An electrical connecting wire; one end of the electrical connecting wire extends two wires, and the ends of the wires expose conductive parts; the conductive parts are respectively welded to the welding parts of the two pins to form a first semi-finished product. An insulating inner mold; the insulating inner mold is injection-molded and fixed on the first semi-finished product, one end of the electrical connecting wire, the two wires, the welding part of the conductive part and the welding place, and the embedding part are all embedded and fixed in the insulating inner mold to form a second semi-finished product; the plugging part extends upward from the top end of the insulating inner mold, the electrical connecting wire extends from the rear end of the insulation, and a section to be coated is preset on the outer surface of the second semi-finished product corresponding to the electrical connecting wire close to the insulating inner mold. An insulating outer mold; the insulating outer mold is injection-molded and fixed on the second semi-finished product, the insulating inner mold and the section to be coated are all embedded and fixed in the insulating outer mold, and the plugging part extends upward from the top end of the insulating outer mold.

2. The thin two-pin power plug according to claim 1, wherein: A holding part for facilitating plugging and unplugging operations is arranged on the left side and / or the right side inside the insulating outer mold.

3. The thin two-pin power plug according to claim 2, characterized in that: The holding part is an inner groove.

4. The thin two-pin power plug according to claim 3, characterized in that: Limit parts are reserved at the top and bottom corresponding to the inner groove on the left side and / or the right side inside the insulating outer mold.

5. A thin two-pin power plug according to claim 1, characterized in that: The hardness of the insulating inner mold is greater than that of the insulating outer mold.

6. A thin two-pin power plug according to claim 1, characterized in that: The insulating inner mold includes a main body part and two extending parts integrally connected to the top of the main body part. The extending parts protrude upward from the top of the main body part and are arranged at intervals left and right. The embedding part is embedded and fixed in the corresponding extending part; the insulating outer mold is wrapped and fixed on the outer periphery of the extending part and the top of the extending part is exposed, and the top of the insulating outer mold is flush with the top of the extending part.

7. A thin two-pin power plug according to claim 1, characterized in that: A through hole penetrating left and right is arranged on the welding part. The conductive part is welded to the left side and / or the right side of the welding part, and the through hole is filled with solder so that the conductive part is consolidated to the left and right sides of the welding part via the solder.

8. A thin two-pin power plug according to claim 1, characterized in that: Glue filling notches are arranged at the front and rear ends of the embedding part, and the glue filling notches are filled when the insulating inner mold is injection-molded.

9. The thin two-pin power plug according to claim 6, characterized in that: The thickness between the top and the bottom of the insulating outer mold is defined as the first thickness, the thickness between the top and the bottom of the main body part is defined as the second thickness, the thickness between the top of the main body part and the top of the insulating outer mold is defined as the third thickness, and the thickness between the bottom of the main body part and the bottom of the insulating outer mold is defined as the fourth thickness. The second thickness is one-half times to two-thirds times the first thickness, and the third thickness is less than the fourth thickness.

10. A travel socket, which includes a socket board and a power plug. The socket board is provided with a power supply interface for supplying power to external devices. Its characteristics are that The power plug is a thin-type two-pin power plug according to any one of claims 1 to 9, and the other end of the electrical connecting wire is connected to the socket board.

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