CN216958624U

CN216958624U - Plug with improved structure

Info

Publication number: CN216958624U
Application number: CN202220552642.2U
Authority: CN
Inventors: 江朝军; 李平; 余嘉; 王成凯; 励华东
Original assignee: Gongniu Group Co Ltd
Current assignee: Gongniu Group Co Ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-07-12
Anticipated expiration: 2032-03-14

Abstract

The application provides a plug relates to circuit connection technical field, aims at providing a plug that is used for the temperature rise test of socket experimental. The plug comprises a jack socket, a live wire assembly, a zero wire assembly and a wire holder. And a live wire jack and a zero line jack are arranged on the base of the jack seat. The live wire subassembly includes live wire bolt and live wire terminal, and the one end and the live wire terminal of live wire bolt are connected, and the other end of live wire bolt passes the live wire jack. The zero line subassembly includes zero line bolt and zero line terminal, and the one end and the zero line terminal of zero line bolt are connected, and the other end of zero line bolt passes the zero line jack. The wire holder includes the casing to and live wire reference column and zero line reference column be connected with the casing. The base is installed in the erection opening department, and the both ends of live wire terminal are respectively with live wire reference column and base contact, and the both ends of zero line terminal respectively with zero line reference column and base contact. The plug provided by the application is used for circuit connection.

Description

Plug with improved structure

Technical Field

The utility model relates to the technical field of circuit connection, in particular to a plug.

Background

The socket is also called as a power socket and a switch socket. A socket is a receptacle into which one or more circuit connections can be inserted, through which various connections can be inserted to facilitate connection to other circuits. For example: the connection and disconnection between the circuit and the power supply circuit are realized through the connection and disconnection between the circuit and the copper piece of the socket.

Among various performance test tests of the socket, a temperature rise test is an important test for detecting whether the socket can stably supply power for a long time. In a temperature rise test of the socket, a plug connected with a load is required to be inserted into the socket and electrically connected with the socket, so that whether the temperature difference between the temperature of the socket and the environment meets a preset standard or not in the process of continuously supplying power to the load by the socket is detected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a plug, and aims to provide a plug for a temperature rise test of a socket.

In order to achieve the above purpose, the embodiment of the utility model adopts the following technical scheme:

the embodiment of the application provides a plug, including jack socket, live wire subassembly, zero line subassembly and connection terminal. The jack seat comprises a base, and a live wire jack and a zero wire jack are arranged on the base. The live wire subassembly includes live wire bolt and live wire terminal, and the one end and the live wire terminal of live wire bolt are connected, and the other end of live wire bolt passes the live wire jack. The zero line subassembly includes zero line bolt and zero line terminal, and the one end and the zero line terminal of zero line bolt are connected, and the other end of zero line bolt passes the zero line jack, and zero line terminal and live wire terminal lie in same one side of base. The connection terminal includes casing, live wire reference column and zero line reference column, and the casing encloses into the wiring chamber that has a side-mounting opening, and live wire reference column and zero line reference column are located the wiring intracavity respectively to be connected with the casing respectively. Wherein, the pedestal mounting is in erection opening department, along the length direction of live wire bolt, the both ends of live wire terminal respectively with live wire reference column and base contact, and the both ends of zero line terminal respectively with zero line reference column and base contact.

In some embodiments, the end of the live line positioning column away from the base is connected with the side wall of the shell away from the base, and the end of the zero line positioning column away from the base is connected with the side wall of the shell away from the base. Along the length direction of live wire bolt, live wire reference column and zero line reference column are equipped with first accommodation hole and second accommodation hole respectively.

In some embodiments, the wire holder further includes an annular recessed groove on a side wall of the housing remote from the base for reducing a thickness of the housing.

In some embodiments, a first notch is formed in a side of the first accommodating hole away from the housing, and a second notch is formed in a side of the second accommodating hole away from the housing.

In some embodiments, the firing line assembly further comprises a firing line screw. Along the length direction of live wire bolt, live wire screw hole is seted up to the direction of keeping away from the connection terminal to the live wire terminal. One end of the live wire screw is inserted into the live wire threaded hole, and the other end of the live wire screw is located in the first accommodating hole. Along the radial direction of live wire screw hole, the live wire terminal still is equipped with the live wire access hole of intercommunication live wire screw hole for the wiring. The neutral wire assembly further includes a neutral wire screw. And a zero line threaded hole is formed in the zero line terminal in the direction far away from the wire holder along the length direction of the zero line bolt. One end of the zero line screw is inserted into the zero line threaded hole, and the other end of the zero line screw is positioned in the second accommodating hole. And a zero line access hole communicated with the zero line threaded hole is also formed in the zero line terminal along the radial direction of the zero line threaded hole and used for wiring.

In some embodiments, the wire holder further includes a plurality of reinforcing ribs, and the live wire positioning column and the neutral wire positioning column are respectively connected to the housing through the reinforcing ribs.

In some embodiments, the socket further includes a second positioning rib, the second positioning rib is connected to the base, and the second positioning rib is located on a side of the base facing the housing. The second positioning rib is inserted into the wiring cavity, is contacted with the shell close to the mounting opening and is used for positioning the mounting position of the base and the shell.

In some embodiments, the wire holder further includes a plurality of support posts respectively located within the wire cavity and connected to the housing. Along the length direction of live wire bolt, be equipped with a plurality of installation through-holes on the base. And each supporting column is provided with a mounting threaded hole towards the shell along the axial direction of the mounting through hole, and each mounting threaded hole is aligned with one mounting through hole.

In some embodiments, the socket further includes a plurality of first positioning ribs, the first positioning ribs are respectively connected to one side of the base facing the housing, and each first positioning rib is disposed near one of the mounting through holes. The side wall of each supporting column is contacted with one adjacent first positioning rib along the radial direction of the mounting threaded hole.

In some embodiments, each support post is in register contact with only one of the first locating ribs.

In some embodiments, the plug further comprises a grounding assembly comprising a grounding pin and a grounding terminal, one end of the grounding pin being connected to the firing wire terminal. The jack seat still is equipped with the ground connection jack, and the live wire jack is passed to the one end that ground connection terminal was kept away from to the ground connection bolt. The wiring base further comprises a grounding positioning column, and the grounding positioning column is installed in the wiring cavity and connected with the shell. Along the length direction of the grounding bolt, two ends of the grounding terminal are respectively contacted with the grounding positioning column and the jack seat.

The plug that this application embodiment provided, live wire subassembly and zero line subassembly are installed between jack socket and connection terminal, and wherein the live wire jack is passed to the one end of the live wire bolt of live wire subassembly, and the zero line jack is passed to the one end of the zero line bolt of corresponding zero line subassembly. Live wire terminal and zero line terminal are connected respectively to the other end of live wire bolt and zero line bolt, and the both ends of live wire terminal contact with live wire reference column and base butt respectively, and the both ends of zero line terminal contact with zero line reference column and base butt respectively to make the plug insert the socket and break away from the socket when, live wire bolt and zero line bolt all are in stable installation status, simple structure. In addition, in the process of carrying out the socket temperature rise test, the plug provided by the application can be uniformly used, so that the variable in the test can be conveniently controlled, and the detection precision of the temperature rise test can be favorably improved.

Drawings

Fig. 1 is an exploded view of a single-phase three-pole plug according to an embodiment of the present disclosure;

FIG. 2 is a bottom view of the single-phase three-pole plug of FIG. 1 assembled;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

fig. 5 is a schematic view of the overall structure of the wire holder shown in fig. 1;

FIG. 6 is a schematic view of the socket shown in FIG. 1;

FIG. 7 is a schematic view of the overall construction of the firing line assembly shown in FIG. 1;

FIG. 8 is a schematic view of the overall construction of the neutral assembly shown in FIG. 1;

fig. 9 is a schematic view of the overall structure of the grounding assembly shown in fig. 1;

fig. 10 is an exploded view of a single-phase two-pole plug according to an embodiment of the present application;

fig. 11 is a bottom view of a single phase two pole plug according to an embodiment of the present application;

FIG. 12 is a front view of FIG. 11;

fig. 13 is a bottom view of a single phase tertiary plug according to embodiments of the present application;

fig. 14 is a front view of fig. 13.

Description of the reference numerals:

1-a jack seat; 11-a base; 12-a live wire jack; 13-zero line jack; 14-a ground jack; 15-mounting a through hole; 16-countersunk holes; 17-a first positioning rib; 18-second positioning ribs;

2-a live wire assembly; 21-live wire bolt; 22-a hot wire terminal; 23-live threaded hole; 24-a live via; 25-live screw;

3-a neutral wire assembly; 31-zero line plug; 32-neutral terminal; 33-zero line screw hole; 34-neutral through hole; 35-neutral line screw;

4-a ground component; 41-a grounding pin; 42-ground terminal; 43-a ground screw hole; 44-ground vias; 45-ground screw;

5-a wire holder; 501-a shell; 502-wiring cavity; 503-mounting openings; 504-fire post location post; 505-zero line reference post; 506-a ground reference post; 507-reinforcing ribs; 508-support column; 509-mounting threaded hole; 510-a first receiving hole; 511-a second receiving hole; 512-third receiving hole; 513 — a first notch; 514-second gap; 515-third gap; 516-annular recess.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or relative positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. The above description of the orientation can be flexibly set in the course of practical application in the case where the relative positional relationship shown in the drawings is satisfied, unless otherwise specified.

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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

It should be noted that in practical applications, due to the limitation of the precision of the device or the installation error, the absolute parallel or perpendicular effect is difficult to achieve. In the present application, the vertical, parallel or equidirectional description is not an absolute limitation condition, but means that the vertical or parallel structural arrangement can be realized within a preset error range, and a corresponding preset effect is achieved, so that the technical effect of limiting the features can be realized to the maximum extent, the corresponding technical scheme is convenient to implement, and the feasibility is high.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally 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 by those of ordinary skill in the art as appropriate.

In the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, article, or apparatus that comprises the element.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the field of sockets, "temperature rise" refers to the value of the temperature rise of a socket after being powered on (i.e., connected to an electrical appliance), and is generally the temperature difference between the measured maximum temperature of the socket and the current ambient temperature. The load is equipment for receiving electric energy in a circuit and is a general name of various electric appliances; in the temperature rise test, the load refers to an electric device or a component which is electrically connected with the socket and used for receiving electric energy.

Among various performance test tests of the socket, a temperature rise test is an important test for detecting whether the socket can stably supply power for a long time. At present, in a temperature rise test of a socket, a plug connected with a load needs to be inserted into the socket and electrically connected with the socket, so that whether the temperature difference between the temperature of the socket and the environment meets a preset standard or not in the process of continuously supplying power to the load by the socket is detected. However, because the plugs connected by different loads are not completely the same, and the plugs themselves have different shape and size standards, when the temperature rise test of the socket is tested by using the plugs with different standards, the plugs with different shapes or sizes can affect the test accuracy of the test.

Based on this, as shown in fig. 1, fig. 1 is an exploded view of a single-phase three-pole plug provided by the embodiment of the present application. The embodiment of the application provides a plug, and this plug includes jack socket 1, live wire subassembly 2, zero line subassembly 3, ground connection subassembly 4 and connection terminal 5. In fig. 1, it is defined that the receptacle 1 is located below the wire holder 5, the live wire element 2 is located at the right side of the neutral wire element 3, and the grounding element 4 is located at the front side of the live wire element 2 and the neutral wire element 3.

Referring to fig. 1 and 2, the jack socket 1 illustratively includes a base 11, and a live jack 12, a neutral jack 13 and a ground jack 14 are respectively formed on the base 11 along an up-down direction. Wherein, live wire subassembly 2 can include live wire bolt 21 and live wire terminal 22, and the upper end and the live wire terminal 22 of live wire bolt 21 are connected, and the lower extreme of live wire bolt 21 passes live wire jack 12 from top to bottom. And the neutral assembly 3 may include a neutral bolt 31 and a neutral terminal 32, an upper end of the neutral bolt 31 is connected to the neutral terminal 32, and a lower end of the neutral terminal 32 passes through the neutral jack 13 from top to bottom. The corresponding grounding assembly 4 includes a grounding pin 41 and a grounding terminal 42, wherein the upper end of the grounding pin 41 is connected to the grounding terminal 42, and the lower end of the grounding terminal 41 passes through the grounding receptacle 14 from top to bottom. So that the live wire assembly 2, the neutral wire assembly 3 and the grounding assembly 4 are respectively installed at corresponding positions of the base 11.

The live pin 21, the neutral pin 31, and the ground pin 41 may be of a sheet structure or a rod structure, and are not limited herein. However, the shapes and sizes of the live wire jack 12, the neutral wire jack 13 and the ground jack 14 respectively correspond to the shapes and sizes of the live wire bolt 21, the neutral wire bolt 31 and the ground bolt 41, so that the lower ends of the live wire bolt 21, the neutral wire bolt 31 and the ground bolt 41 can just penetrate through the live wire jack 12, the neutral wire jack 13 and the ground jack 14 from top to bottom respectively. The dimensions of the live, neutral and

ground terminals

22, 32, 42 are generally greater than the dimensions of the live, neutral and ground jacks 12, 13, 14, respectively, so that the lower side walls of the live, neutral and

ground terminals

22, 32, 42 contact the upper side wall of the base 11, thereby preventing the live, neutral and ground pins 21, 31, 41, respectively, from falling out of the base 11. The live bolt 21, the neutral bolt 31, and the ground bolt 41 extend in the vertical direction.

As shown in fig. 1 and 3, the wire holder 5 includes a housing 501, and the housing 501 encloses a wire connection chamber 502 having a lower side mounting opening 503. The outer contour of the housing 501 may be approximately a cylinder, and the outer contour of the corresponding base 11 is also approximately a cylinder, so that when the lower side of the housing 501 is installed near the base 11, the main structure of the plug is approximately a cylinder. In addition, a rectangular parallelepiped or a square structure may be provided. And chamfers or fillets are provided at the edges. And is not limited herein.

In some embodiments, to avoid movement of the live bolt 21, neutral bolt 31 and ground bolt 41 upwards during use. Referring to fig. 3 and 4, the wire holder 5 may further include a live retention post 504, a neutral retention post 505, and a ground retention post 506. The live positioning post 504, neutral positioning post 505 and ground positioning post 506 are respectively located in the wiring chamber 502. For example, the upper end of the live wire positioning post 504, the upper end of the neutral wire positioning post 505 and the upper end of the ground positioning post 506 may be respectively connected to an inner side wall (a side wall close to the wiring cavity 502) above the housing 501, when the housing 501 is downward close to the base 11 so as to mount the base 11 at the mounting opening 503 (as shown in fig. 1), the lower end surface of the live wire positioning post 504 contacts or even fits the upper end surface of the live wire terminal 22, the lower end surface of the neutral wire positioning post 505 contacts or even fits the upper end surface of the neutral wire terminal 32, and the lower end surface of the ground positioning post 506 contacts or even fits the upper end surface of the ground terminal 42. Therefore, the upper and lower ends of the live wire terminal 22, the zero wire terminal 32 and the ground terminal 42 are respectively abutted and contacted with the wire holder 5 and the base 11, so that when a plug is inserted into and separated from a socket in the upper and lower directions, the live wire bolt 21, the zero wire bolt 31 and the ground bolt 41 are all in a stable installation state, and the structure is simple. In addition, in the process of carrying out the socket temperature rise test, the plug provided by the application can be uniformly used, so that the variable in the test can be conveniently controlled, and the detection precision of the temperature rise test can be favorably improved.

It should be noted that the live positioning post 504, the neutral positioning post 505, and the ground positioning post 506 may be connected to the inner side wall of the upper side of the housing 501 through the upper ends thereof, respectively. Alternatively, a side wall of the housing 501 in the left-right or front-rear direction may be defined as a side wall, and the live wire positioning post 504, the neutral wire positioning post 505, and the ground positioning post 506 may be directly connected to the side wall of the housing 501. For example, as shown in fig. 5, the wire holder 5 may further include three reinforcing ribs 507, and since the live wire positioning post 504, the neutral wire positioning post 505 and the ground positioning post 506 are respectively spaced from the side wall of the housing 501, the live wire positioning post 504, the neutral wire positioning post 505 and the ground positioning post 506 can be respectively connected to the side wall of the housing 501 through one reinforcing rib 507, so as to enhance the structural strength of the live wire positioning post 504, the neutral wire positioning post 505 and the ground positioning post 506.

In some embodiments, in order to connect the base 11 and the wire holder 5, as shown in fig. 2 and 5, the base 11 is provided with a mounting through hole 15 on each of the left and right sides. The wire holder 5 also includes two support posts 508. The two support columns 508 are respectively located in the wiring cavity 502 and connected to the housing 501, and the two support columns 508 may be located on the left and right sides of the wiring cavity 502 or may be disposed at intervals. From bottom to top, a mounting threaded hole 509 is formed in the lower end surface of each support pillar 508. When the live wire positioning column 504, the neutral wire positioning column 505 and the grounding positioning column 506 are respectively contacted and abutted with the live wire terminal 22, the neutral wire terminal 32 and the grounding terminal 42, in the up-down direction, each installation through hole 15 is aligned with one installation threaded hole 509, and at the moment, the installation through holes 15 can be sequentially inserted from bottom to top through screws and screwed into the installation threaded holes 509, so that the installation connection of the base 11 and the wire holder 5 is realized.

Illustratively, referring to fig. 4, on the upper side of the mounting through holes 15, the base 11 is further provided with a counter bore 16 corresponding to each mounting through hole 15. Thus, when the screw is inserted into the mounting through hole 15 from the bottom up to connect the base 11 and the housing 501, the nut portion of the screw can also be inserted into the counter bored hole 16, thereby ensuring that the lower side surface of the base 11 does not protrude out of the screw.

In order to facilitate the alignment installation of the base 11 and the housing 501, as shown in fig. 6, the jack socket 1 may further include two first positioning ribs 17, the two first positioning ribs 17 are respectively connected to the upper side of the base 11, and each first positioning rib 17 is located near one installation through hole 15. The first positioning ribs 17 may be upwardly convex arc-shaped structures, and each first positioning rib 17 generally semi-surrounds one of the mounting through holes 15, so that the inner side wall of the first positioning rib 17 faces the mounting through hole 15. Illustratively, two mounting through holes 15 are distributed along the left-right direction, wherein one first positioning rib 17 is positioned at the right side of the mounting through hole 15 at the left side, and the first positioning rib 17 semi-surrounds the mounting through hole 15 towards the left; the other first positioning rib 17 is located on the left side of the right mounting through hole 15, and the first positioning rib 17 surrounds the mounting through hole 15 halfway to the right.

Referring to fig. 4 and 6, in the up-down direction, when each mounting through hole 15 is aligned with one mounting threaded hole 509, each supporting column 508 is adjacent to one mounting through hole 15, and the side wall of each supporting column 508 contacts with or even abuts against the inner side wall of the adjacent one first positioning rib 17 in the radial direction of the mounting threaded hole 509 (or the radial direction of the mounting through hole 15). Each first positioning rib 17 also semi-surrounds one support column 508 at this time. That is, each first positioning rib 17 encloses a structure similar to a positioning groove, and when the base 11 and the housing 501 are installed in an aligned manner, only the lower end of each support column 508 needs to be inserted into the groove-shaped structure enclosed by the first positioning ribs 17, which is very convenient.

If the receptacle 1 and the wire holder 5 are symmetrical in the front-back and left-right directions, each support column 508 can be mounted in contact with at least two first positioning ribs 17. However, if the receptacle 1 and the wire holder 5 have an asymmetric structure on the front-back and left-right direction planes, in this case, in order to facilitate the alignment installation of the installation through hole 15 and the installation screw hole 509, the installation positions of the support columns 508 and the first positioning ribs 17 can be adjusted, so that each support column 508 can be installed in contact with only one first positioning rib 17, and the alignment installation of the installation through hole 15 and the installation screw hole 509 is facilitated (i.e., foolproof design).

It should be noted that the number of the mounting through holes 15, the support posts 508 and the mounting threaded holes 509 may be three, four or more. Correspondingly, the number of the supporting columns 508 and the first positioning ribs 17 can also be three, four or even more. In addition, the base 11 and the housing 501 can be directly adhered by glue. And is not limited herein.

In some embodiments, with continued reference to fig. 6, the receptacle 1 further comprises a second positioning rib 18, the second positioning rib 18 being connected to the upper side of the base 11. Because the jack seat 1 is approximately a cube, a cuboid or a cylinder structure, that is, the second positioning rib 18 can extend along the circumferential direction of the base 11, and the distance between the second positioning rib 18 and the edge of the base 11 is always a fixed value, which is generally smaller than or equal to the thickness of the casing 501.

Based on this, when the housing 501 and the base 11 are connected, the second positioning rib 18 is inserted into the wiring cavity 502 from bottom to top through the mounting opening 503. The thickness of the housing near the mounting opening 503 can be adjusted so that the thickness is fixed value a. Thus, the outer side wall of the second positioning rib 18 is just in contact with, or even completely attached to, the inner side wall of the lower end of the casing 501, so that the alignment installation of the casing 501 and the base 11 is realized.

Because first location muscle 17 and second location muscle 18 all are connected in the upside of base 11, to first location muscle 17 and second location muscle 18, can connect structure as an organic whole, also can separate the setting, do not do the injecing here. In addition, the second positioning rib 18 may also be connected to the lower end of the housing 501, and the base 11 is provided with a positioning cavity engaged with the second positioning rib 18, which may also facilitate the installation and positioning of the base 11 and the housing 501.

For the plug, the live bolt 21 and the neutral bolt 31 need to be connected to a load, while the earth bolt 41 needs to be earthed to protect the consumer. In this way, the live bolt 21, the neutral bolt 31, and the ground bolt 41 need to be connected to each other by wires.

The live wire plug 21, the neutral wire plug 31, the ground plug 41, the live wire terminal 22, the neutral wire terminal 32, and the ground terminal 42 are all made of metal material, i.e. are conductive structures. The live wire bolt 21 and the live wire terminal 22 can be of an integrally formed structure or can be connected by welding. The neutral pin 31 and the neutral terminal 32 may be integrally formed or may be connected by welding. Similarly, the ground pin 41 and the ground terminal 42 may be integrally formed or may be connected by welding. Thus, the hot terminal 22, the neutral terminal 32, and the ground terminal 42 may each be used to connect electrical wires directly.

Illustratively, as shown in fig. 7, the upper end surface of the live wire terminal 22 is provided with a live wire threaded hole 23 along the up-down direction (i.e. the length direction of the live wire bolt 21), and the live wire terminal 22 is further provided with a live wire access hole 24 communicating with the live wire threaded hole 23 along the radial direction of the live wire threaded hole 23 for accommodating an electric wire. Correspondingly, the live wire assembly 2 may further include a live wire screw 25, and a threaded end of a lower end of the live wire screw 25 is inserted into the live wire threaded hole 23 and is in threaded connection with the live wire threaded hole 23. By screwing the live wire screw 25, the lower end of the live wire screw 25 can be inserted into the live wire access hole 24, and is close to or even attached to the side wall of the live wire access hole 24, so that the electric wire can be extruded and fixed.

As shown in fig. 8, a neutral thread hole 33 may be formed in the upper end surface of the neutral terminal 32 downward along the up-down direction (i.e., the length direction of the neutral pin 31), and a neutral access hole 34 communicating with the neutral thread hole 33 may be further formed in the neutral terminal 32 along the radial direction of the neutral thread hole 33, for accommodating an electric wire. Correspondingly, the zero line component 3 may further include a zero line screw 35, and a threaded end of the lower end of the zero line screw 35 is inserted into the zero line threaded hole 33 and is screwed with the zero line threaded hole 33. By screwing the zero line screw 35, the lower end of the zero line screw 35 can extend into the zero line access hole 34, and is close to or even attached to the side wall of the zero line access hole 34, so that the electric wire is extruded and fixed.

As shown in fig. 9, the upper end surface of the ground terminal 42 may be opened with a ground screw hole 43 downward along the vertical direction (i.e., the length direction of the ground plug 41), and the ground terminal 42 may be opened with a ground access hole 44 communicating with the ground screw hole 43 along the radial direction of the ground screw hole 43 for accommodating an electric wire. Correspondingly, the grounding assembly 4 may further include a screw 45, and a threaded end of a lower end of the grounding screw 45 is inserted into the grounding threaded hole 43 and is screwed with the grounding threaded hole 43. By screwing the ground screw 45, the lower end of the ground screw 45 can be inserted into the ground access hole 44, close to or even attached to the side wall of the ground access hole 44, for pressing and fixing the electric wire.

The live wire terminal 22, the neutral wire terminal 32, and the ground terminal 42 have their upper end surfaces fitted with a live screw 25, a neutral screw 35, and a ground screw 45, respectively. To avoid contact positioning between the hot terminal 22, neutral terminal 32 and ground terminal 42 and the hot reference post 504, neutral reference post 505 and ground reference post 506.

As shown in fig. 5, for example, the live positioning post 504 may have a first receiving hole 510 from bottom to top, the neutral positioning post 505 may have a second positioning hole 511 from bottom to top, and the ground positioning post 506 may have a third receiving hole 512 from bottom to top. With reference to fig. 3 and 4, when the live positioning post 504, the neutral positioning post 505 and the ground positioning post 506 are respectively contacted or even attached to the live terminal 22, the neutral terminal 32 and the ground terminal 42, the upper end of the live screw 25 extends into the first receiving hole 510, so that the live positioning post 504 (which is equivalent to a live positioning ring) is abutted to the live terminal 22 outside the live screw 25; the upper end of the neutral screw 35 extends into the second accommodating hole 511, so that the neutral positioning post 505 (which is equivalent to a neutral positioning ring) is abutted against the neutral terminal 32 outside the neutral screw 35; the upper end of the corresponding ground screw 45 extends into the third receiving hole 512, so that the ground positioning post 506 (which is equivalent to a ground positioning ring) abuts against the ground terminal 42 outside the ground screw 45.

Note that, even when the live wire module 2, the neutral wire module 3, and the ground module 4 are fixedly attached to the incoming wires without using screws, the wires are directly inserted into the live wire through hole 24, the neutral wire through hole 34, or the ground through hole 54, and then the wires are fixed by rotation or soldered. In this way, the first receiving hole 510, the second receiving hole 511, and the third receiving hole 512 formed along the vertical direction can also reduce the material consumption of the live positioning post 504, the neutral positioning post 505, and the ground positioning post 506.

It should be noted that, when the plug provided in the embodiment of the present application is used in a temperature rise test of a socket, the plug can be connected to an electric device through electric wires at the live wire terminal 22, the neutral wire terminal 32 and the ground terminal 42 to serve as a load in a socket test process; alternatively, the hot and

neutral terminals

22, 32 may be shorted directly within the junction housing 502, such as by connecting a load resistor between the hot and

neutral terminals

22, 32, which may also be used as a load during socket testing.

Based on this, as shown in fig. 4 and 5, the wire holder 5 may further include an annular recessed groove 516, and the annular recessed groove 516 may be a circular annular groove, a square annular groove, a rectangular annular groove, a triangular annular groove, or the like. The annular recessed groove 516 is located on the upper side wall of the housing 501, and may be the upper side of the upper side wall, or the lower side of the upper side wall, or both the upper side wall and the lower side wall are provided with the annular recessed groove 516. In this way, the provision of the annular recess 516 reduces the thickness of a portion of the upper side wall, i.e., the side wall surrounded by the annular recess 516 can be directly and forcibly knocked and dropped to form a wire passing hole for passing an electric wire of an electric appliance through the wire passing hole to connect the hot wire terminal 22, the neutral wire terminal 32 and the ground terminal 42, respectively. In addition, if external consumer is not required, can remain annular indent 516, guarantee the integrality of going up the lateral wall promptly, the structure is exquisite, convenient to use.

In some embodiments, with reference to fig. 5, the live positioning post 504 is provided with a first notch 513 communicating with the first receiving hole 510 toward a side away from the housing 501 (i.e., a side close to the annular recessed groove 516 or an extension line of an axis of the wire passing hole), the neutral positioning post 505 is provided with a second notch 514 communicating with the second receiving hole 511 toward a side away from the housing 501, and a third notch 515 communicating with the third receiving hole 512 is provided corresponding to the ground positioning post 506 toward a side away from the housing 501. Through the arrangement of the first notch 513, the second notch 514 and the third notch 515, when the external electric device is used, the electric wire is inserted into the first accommodating hole 510, the second accommodating hole 511 and the third accommodating hole 512 through the first notch 513, the second notch 514 and the third notch 515, respectively. In addition, the arrangement of the first notch 513, the second notch 514 and the third notch 515 enables the live wire positioning column 504, the null wire positioning column 505 and the ground positioning column 506 to have notches at one side close to the annular depressed groove 516 or the axial line extension line of the wire passing hole, so that the effective space of the wiring cavity 502 among the live wire positioning column 504, the null wire positioning column 505 and the ground positioning column 506 cannot be occupied additionally, the improvement of the hole opening area of the wire passing hole is facilitated, and the threading is facilitated.

It should be noted that in the present embodiment, the plug may be a single-phase three-pole plug, i.e., including the live assembly 2, the neutral assembly 3, and the ground assembly 4. In addition, the plug can also be a single-phase two-pole plug.

Fig. 10 is an exploded view of a single-phase two-pole plug according to an embodiment of the present invention, as shown in fig. 10. The plug simultaneously comprises a jack socket 1, a live wire component 2, a zero wire component 3 and a wire holder 5. I.e. does not comprise the ground assembly 4 (as shown in fig. 1). Therefore, when the plug is a two-pole plug, the outer contour structures of the jack socket 1 and the wire holder 5 can be similar to a cuboid structure, and after the structure corresponding to the grounding component 4 is removed, the structures related to the live wire component 2 and the zero wire component 3 are correspondingly adjusted, so that the live wire bolt 21 and the zero wire bolt 31 are parallel to each other. The specific structure may be referred to in combination with the above embodiment of the three-pole plug, which is not described herein again.

Illustratively, for specific dimensions of the plug, as shown in fig. 11 and 12, fig. 11 is a bottom view of a single-phase two-pole plug provided in an embodiment of the present application, and fig. 12 is a front view of fig. 11. The rated voltage of the single-phase two-pole plug is 250V, and the rated current of the single-phase two-pole plug is 10A. The opening distance F, namely the distance between the live wire bolt 21 and the zero wire bolt 31 in the left-right direction is 12.7 +/-0.05 mm. The thickness t of the live wire bolt 21 and the neutral wire bolt 31 in the left-right direction is 1.45mm to 1.50mm, and if no special description is provided, the subsequent size interval includes values at both ends of the interval, and t may be 1.45mm or 1.50 mm. The width b of the live bolt 21 and the neutral bolt 31 in the front-rear direction is 6.18mm to 6.28 mm. The length E of the live bolt 21 and the neutral bolt 31 extending downwardly out of the base 11 is 16 ± 0.2 mm. The width X of the base 11 and the housing 501 in the left-right direction is 33 + -0.5 mm. The thickness W of the base 11 and the housing 501 in the front-rear direction is 20 + -0.5 mm. The height Z of the base 11 in the vertical direction is 10mm + -0.2 mm, and the height Y of the housing 501 in the vertical direction is 25 + -0.5 mm. And the radius R of the round corners of the base 11 and the housing 501 is 4mm to 6 mm.

In other embodiments, as shown in fig. 13 and 14, fig. 13 is a bottom view of a single-phase three-level plug provided in the embodiments of the present application, and fig. 14 is a front view of fig. 13. The rated voltage of the single-phase three-stage plug can be 250V, and the rated current can be divided into 10A and 16A.

When the rated current of the single-phase three-level plug is 10A, with reference to fig. 13 and 14, the open-range distance D of the grounding pin 41 (shown in fig. 1) is 10.3 ± 0.1mm, the open-range distances F of the zero-line pin 31 and the live-line pin 21 are 7.9 ± 0.1mm, and the open-range angles among the live-line pin 21, the zero-line pin 31 and the grounding pin 41 are all 120 ° ± 30'. The thickness t of the live, neutral and ground plugs 21, 31 and 41 is 1.45 to 1.50mm, and the width b of the live, neutral and ground plugs 21, 31 and 41 is 6.18 to 6.28 mm. The length E of the live wire bolt 21 and the zero wire bolt 31 extending downwards out of the base 11 is 18 +/-0.2 mm, and the length C of the grounding bolt 41 extending downwards out of the base 11 is 21 +/-0.2 mm. The diameter X of the base 11 and the housing 501 in the right-left or front-rear direction is 35 + -0.5 mm. The height Z of the base 11 in the vertical direction is 10mm + -0.2 mm, and the height Y of the housing 501 in the vertical direction is 25 + -0.5 mm. The diameter of the live wire screw hole 23, the neutral wire screw hole 33, and the ground screw hole 43 is 3.5mm, and the specification of the live wire screw 25, the neutral wire screw 35, and the ground screw 45 is M3.

When the rated current of the single-phase three-level plug is 16A, referring to fig. 13 and 14, the open distance D of the live wire plug 21 (shown in fig. 1) is 11.1 ± 0.1mm, the open distance F of the neutral wire plug 31 and the grounding plug 41 is 9.5 ± 0.1mm, and the open angles among the live wire plug 21, the neutral wire plug 31 and the grounding plug 41 are all 120 ° ± 30'. The thickness t of the live, neutral and earth pins 21, 31, 41 is 1.75mm to 1.80mm, and the width b of the live, neutral and earth pins 21, 31, 41 is 7.88mm to 7.98 mm. The length E of the live wire bolt 21 and the zero wire bolt 31 extending downwards out of the base 11 is 18 +/-0.2 mm, and the length C of the grounding bolt 41 extending downwards out of the base 11 is 21 +/-0.2 mm. The diameter X of the base 11 and the housing 501 in the right-left or front-rear direction is 35 + -0.5 mm. The height Z of the base 11 in the vertical direction is 10mm + -0.2 mm, and the height Y of the housing 501 in the vertical direction is 25 + -0.5 mm. The diameter of the live wire threaded hole 23, the null wire threaded hole 33 and the ground threaded hole 43 is 4.0mm, and the specification of the live wire screw 25, the null wire screw 35 and the ground screw 45 is M3.5.

In this way, in the temperature rise test of the socket, the single-phase three-pole plug or the single-phase two-pole plug with the same shape and size specification can be plugged with the socket, so that the load is switched on. So, can avoid the dimensional deviation that the plug appearance brought for the size is more standard, thereby is favorable to improving the experimental precision of temperature rise test of socket.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A plug, comprising:

the jack seat comprises a base, and a live wire jack and a zero line jack are arranged on the base;

the live wire assembly comprises a live wire bolt and a live wire terminal, one end of the live wire bolt is connected with the live wire terminal, and the other end of the live wire bolt penetrates through the live wire jack;

the zero line assembly comprises a zero line bolt and a zero line terminal, one end of the zero line bolt is connected with the zero line terminal, the other end of the zero line bolt penetrates through the zero line jack, and the zero line terminal and the live wire terminal are positioned on the same side of the base; and the number of the first and second groups,

the wire holder comprises a shell, a live wire positioning column and a zero line positioning column; the shell is enclosed to form a wiring cavity with a mounting opening on one side; the live wire positioning column and the zero line positioning column are respectively positioned in the wiring cavity and are respectively connected with the shell;

wherein the base is arranged at the mounting opening; follow the length direction of live wire bolt, the both ends of live wire terminal respectively with the live wire reference column and the base contact, just the both ends of zero line terminal respectively with the zero line reference column and the base contact.

2. The plug of claim 1, wherein an end of the hot wire positioning post remote from the base is connected to a side wall of the housing remote from the base, and an end of the neutral wire positioning post remote from the base is connected to a side wall of the housing remote from the base;

follow the length direction of live wire bolt, the live wire reference column and the zero line reference column is equipped with first accommodation hole and second accommodation hole respectively.

3. The plug of claim 2, wherein the wire holder further comprises an annular recessed groove on a side wall of the housing remote from the base for reducing a thickness of the housing.

4. The plug of claim 2, wherein a side of the first receiving hole away from the housing is provided with a first notch, and a side of the second receiving hole away from the housing is provided with a second notch.

5. The plug of claim 2, wherein the firing line assembly further comprises a firing line screw; the fire wire terminal is provided with a fire wire threaded hole in the direction far away from the wire holder along the length direction of the fire wire bolt; one end of the live wire screw is inserted into the live wire threaded hole, and the other end of the live wire screw is positioned in the first accommodating hole; the fire wire terminal is also provided with a fire wire access hole communicated with the fire wire threaded hole along the radial direction of the fire wire threaded hole for wiring;

the zero line component also comprises a zero line screw; a zero line threaded hole is formed in the zero line terminal in the direction far away from the wire holder along the length direction of the zero line bolt; one end of the zero line screw is inserted into the zero line threaded hole, and the other end of the zero line screw is positioned in the second accommodating hole; and the zero line terminal is also provided with a zero line access hole communicated with the zero line threaded hole in the radial direction of the zero line threaded hole for wiring.

6. The plug of claim 1, wherein the wire holder further comprises a plurality of ribs, and the live wire positioning post and the neutral wire positioning post are connected to the housing through the ribs, respectively.

7. The plug of claim 1, wherein the jack socket further comprises a second positioning rib, the second positioning rib is connected with the base, and the second positioning rib is positioned on one side of the base facing the shell; the second positioning rib is inserted into the wiring cavity, is close to the mounting opening and is contacted with the shell, and is used for positioning the base and the mounting position of the shell.

8. The plug according to any one of claims 1 to 7, wherein the wire holder further comprises a plurality of support posts, the plurality of support posts being respectively located in the wiring cavities and connected to the housing;

a plurality of mounting through holes are formed in the base along the length direction of the live wire bolt; the support columns face the shell along the axial direction of the mounting through holes, each support column is provided with a mounting threaded hole, and each mounting threaded hole is aligned with one mounting through hole;

the jack seat further comprises a plurality of first positioning ribs which are respectively connected to one side of the base, facing the shell, and each first positioning rib is arranged close to one mounting through hole; and along the radial direction of the mounting threaded hole, the side wall of each supporting column is respectively contacted with the adjacent first positioning rib.

9. The plug of claim 8 wherein each of said support posts is in register contact with only one of said first retention ribs.

10. The plug according to any one of claims 1 to 7, further comprising a grounding assembly, wherein the grounding assembly comprises a grounding pin and a grounding terminal, and one end of the grounding pin is connected with the fire wire terminal;

the jack seat is also provided with a grounding jack, and one end of the grounding bolt, which is far away from the grounding terminal, penetrates through the live wire jack;

the wiring base further comprises a grounding positioning column, and the grounding positioning column is arranged in the wiring cavity and connected with the shell; along the length direction of the grounding bolt, two ends of the grounding terminal are respectively contacted with the grounding positioning column and the jack seat.