CN110611191A

CN110611191A - Waterproof plug-in type terminal subassembly

Info

Publication number: CN110611191A
Application number: CN201910887206.3A
Authority: CN
Inventors: 朱惜惜
Original assignee: Hefei Tuokalatu Technology Co Ltd
Current assignee: Lin Xu
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2019-12-24
Anticipated expiration: 2039-09-19
Also published as: CN110611191B

Abstract

The invention discloses a waterproof plug-in type wiring terminal assembly, and relates to the technical field of electrical elements. The invention comprises a first wiring terminal, a connecting column and a second wiring terminal, wherein the first wiring terminal and the second wiring terminal are in inserted fit through the connecting column. The invention adopts a soft and hard combination mode to carry out connection and fixation, has no other fixed parts as a whole, and carries out wrapping limitation on metal and nonmetal rigid parts through elastic materials; the safety is good, the device can be used repeatedly, and the application flexibility is good.

Description

Waterproof plug-in type terminal subassembly

Technical Field

The invention belongs to the technical field of electrical elements, and particularly relates to a waterproof plug-in type wiring terminal assembly which adopts waterproof plug-in type wiring and can be suitable for both soft and hard wires.

Background

The wiring terminal is used as a connecting component of electronic elements, electrical appliances and the like, can achieve the effects of wiring and electrifying, realizes the good connection function of wiring and electrifying, and is an important wiring component for connecting the electrical appliances and between the wiring terminal and the wiring terminal.

The existing connecting terminal is mainly connected by adopting a connecting part of a metal part, a rigid part for fixing the metal part and various buckles, is mainly in rigid connection, can only be used as a connecting part, and cannot be used as a part of an electric wire.

The prior patent CN104051869B — a plug-in type connection terminal, includes an insulating housing with an integral structure and a cavity formed therein to form a hollow structure, a conductive metal plug connector disposed in the cavity of the insulating housing, and a turning handle disposed on the top surface of the insulating housing and corresponding to the conductive metal plug connector; one end of the insulating shell is provided with a plug wire port which corresponds to the conductive metal plug connector and allows a lead wire to be inserted into a wire connecting port formed by the conductive metal plug connector, and the top surface of the insulating shell is provided with a turnover handle through groove; the turning handle is hinged on a turning handle through groove, a hinged convex column head is arranged on the turning handle, and a groove matched with the hinged convex column head is arranged on the turning handle through groove; one end of the turning handle is a pressing end which can turn and press the conductive metal plug connector, and the other end of the turning handle is a handle end. The wiring step of the plug-in type wiring terminal does not need to disassemble the wiring terminal for wiring, and the plug-in type wiring terminal can be used for flexible or rigid one-time wiring, is simple and convenient, and is simple and convenient in wiring work and high in construction efficiency.

The prior art is a rigid connecting piece, and the rigid connecting piece is connected in a clamping manner and serves as a terminal connecting piece, so that the flexible utilization of the middle part and the end part of an electric wire cannot be realized, and various technical differences exist in waterproof and connecting manners and the like.

Disclosure of Invention

The invention aims to provide a waterproof plug-in type wiring terminal assembly which is connected and fixed in a soft and hard combination mode, has no other fixing parts as a whole, and is limited by wrapping metal and nonmetal rigid parts through elastic materials, so that the problems of resource waste and limitation of the existing wiring terminal in the existing electric wire composition are solved.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a waterproof plug-in type wiring terminal assembly which comprises a first wiring terminal, a connecting column and a second wiring terminal, wherein the first wiring terminal and the second wiring terminal are in plug-in fit through the connecting column; the first wiring terminal comprises a barrel cover and a limiting column in interference fit with the barrel cover, and the limiting column comprises two or more fan-shaped bases; a wiring element is matched on the fan-shaped base; the wiring element comprises an insertion tube, a limiting part and a wiring part, and the insertion tube is fixed on the limiting part; the second connecting terminal comprises a cylinder cover and a limiting column in interference fit with the cylinder cover, and the limiting column comprises two or more fan-shaped bases; a wire plugging element is matched on the fan-shaped base; the wire plugging element comprises a plugging column, a limiting part and a wiring part, and the plugging column is fixed on the limiting part; the plug wire element is in plug fit with the plug barrel; the limiting part comprises a fan-shaped plate, one end face of the fan-shaped plate is provided with a limiting partition plate and a wiring part, and the limiting partition plate is positioned on two sides of the wiring part; one end of the wiring part is fixed with a waterproof part; a first through hole matched with the wiring part is formed in the center of one fan-shaped end face of the fan-shaped base, and a through groove opening is formed between the first through hole and the peripheral side plane of the fan-shaped base; the position vertical to the groove mouth is provided with a fan-shaped groove mouth matched with the fan-shaped plate and a groove channel which is arranged on the groove mouth and matched with the limit baffle plate.

Furthermore, the cylinder cover is of a cylinder structure with one closed end, and second through holes concentrically matched with the first through holes are uniformly distributed on the surface of the closed end of the cylinder.

Furthermore, the connecting column is an insulating elastic element and is in interference fit with the cylinder cover; and a third through hole in interference fit with the inserting cylinder is formed in one end face of the connecting column.

Furthermore, the wire plugging element and the wire plugging element are both conductive metal; the limiting column is an insulating elastic element; the cylinder cover is an insulating rigid element.

Furthermore, the waterproof part is fixed at one end of the wiring part, the waterproof part is of an insulating elastic tube structure, and a plurality of contraction channels are uniformly distributed on one end face of the waterproof part along the annular direction; the diameter of the shrink channel and the waterproof part is in the range of 0-60 degrees.

Further, a first separating notch is formed in the peripheral side of the wiring part along the axial direction; one end of the wire connecting part is provided with a second separating notch along the radial direction; the first and second separating notches form a T-shaped groove through which the peripheral side portion of the wiring portion is divided into two openable pieces.

Furthermore, one side of the limit partition plate is also fixed with an insulating elastic blocking strip.

Furthermore, a contraction gap is formed on the peripheral side of the insertion cylinder along the axial direction.

The invention has the following beneficial effects:

1. the invention adopts a soft and hard combination mode to carry out connection and fixation, has no other fixed parts as a whole, and carries out wrapping limitation on metal and nonmetal rigid parts through elastic materials; the safety is good, the device can be used repeatedly, and the application flexibility is good. The device with the wire or the plug-in connecting terminal can be reused in application, the utilization rate of resources is improved, and resource waste is prevented.

2. The invention integrally adopts the elastic insulating rubber to carry out the insulating, sealing and connecting processes, and has the advantages of convenient operation and convenient repeated use. The end face of the cylinder cover can be also provided with a rubber cylinder coated with a wire sheath for protecting and sealing the electric wire. Has safe use process and good waterproofness.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

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 will be briefly introduced 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 the drawings without creative efforts.

FIG. 1 is a schematic structural view of a terminal assembly of the present application;

fig. 2 is a schematic structural diagram of a first connection terminal in the first embodiment;

fig. 3 is a schematic structural diagram of a second connection terminal in the first embodiment;

FIG. 4 is a top view of the structure of FIG. 3;

FIG. 5 is a schematic structural view of the cartridge cover;

FIG. 6 is a top view of the structure of the cartridge cover in accordance with the first embodiment;

FIG. 7 is a top view showing the structure of the cover according to the second embodiment;

FIG. 8 is a schematic structural diagram of a sector-shaped base according to a first embodiment;

FIG. 9 is a schematic structural view of a sector-shaped base according to a second embodiment;

FIG. 10 is a front view of the structure of FIG. 8;

FIG. 11 is a top view of the structure of FIG. 8;

FIG. 12 is a schematic structural diagram of a connecting column according to the first embodiment;

FIG. 13 is a schematic structural diagram of a connecting column according to a second embodiment;

FIG. 14 is a top view of the structure of FIG. 12;

FIG. 15 is a top view of the structure of FIG. 13;

FIG. 16 is a schematic structural diagram of a wire connecting unit according to the first embodiment;

FIG. 17 is a rear view of the structure of FIG. 16;

FIG. 18 is a top view of the structure of FIG. 16;

FIG. 19 is a bottom view of the structure of FIG. 16;

FIG. 20 is a schematic structural diagram of a wire-plugging element according to a first embodiment;

fig. 21 is a schematic structural view illustrating the wire-plugging unit and the fan-shaped base in accordance with the first embodiment;

FIG. 22 is a schematic diagram illustrating a front view of a wiring element according to a second embodiment;

fig. 23 is a schematic structural diagram of a rear view angle of the wiring element in the second embodiment;

FIG. 24 is a bottom view of the structure of FIG. 22;

fig. 25 is a schematic structural view illustrating the connection unit of the second embodiment being engaged with the fan-shaped base;

fig. 26 is a schematic structural view illustrating the wire-plugging unit of the second embodiment being matched with the fan-shaped base;

fig. 27 is a schematic structural view of a second connection terminal in the second embodiment;

fig. 28 is a schematic structural view of a first connection terminal in the second embodiment;

FIG. 29 is a bottom view of the structure of FIG. 27;

in the drawings, the components represented by the respective reference numerals are listed below:

1-a first connecting terminal, 2-a second connecting terminal, 3-a barrel cover, 4-a connecting column, 6-a fan-shaped base, 7-a connecting element, 8-a limiting part, 9-a connecting part, 10-a waterproof part, 11-a wire plugging element, 301-a second through hole, 401-a third through hole, 601-a first through hole, 602-a groove opening, 603-a fan-shaped groove opening, 604-a groove channel, 701-a plugging barrel, 702-a shrinkage gap, 801-a fan-shaped plate, 802-a limiting partition plate, 803-a plugging strip, 901-a first partition groove opening, 902-a second partition groove opening, 1001-a shrinkage groove channel and 1101-a plugging column.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.

In the description of the present invention, it is to be understood that the terms "open," "upper," "lower," "degree," "disposed," "central," "peripheral," "inner," "outer," and the like are used merely for convenience in describing the invention and to simplify description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting the invention.

Example one

Referring to fig. 1, the present invention is a waterproof plug-in type terminal assembly, including a first terminal 1, a connecting post 4 and a second terminal 2, wherein the first terminal 1 and the second terminal 2 are plugged and matched with each other through the connecting post 4.

Referring to fig. 2, the first connection terminal 1 includes a barrel cover 3 and a limiting post in interference fit with the barrel cover 3, wherein the limiting post is an insulating elastic element; the limiting column includes two fan-shaped bases 6, that is, the limiting column is a cylindrical structure surrounded by the two fan-shaped bases 6, as shown in fig. 8, the fan-shaped bases 6 are semi-cylindrical structures; a wiring element 7 is matched on the fan-shaped base 6; as shown in fig. 16-19, the wire connecting unit 7 includes an insertion tube 701, a limiting portion 8 and a wire connecting portion 9, wherein the insertion tube 701 is fixed on the limiting portion 8; the circumference of the insertion tube 701 is provided with a shrinkage gap 702 along the axial direction, so that the insertion tube 701 is convenient to shrink and extrude to generate deformation, and a certain deformation amount is provided.

Referring to fig. 3-4, the second connection terminal 2 includes a barrel cover 3 and a limiting post in interference fit with the barrel cover 3, and the limiting post includes two fan-shaped bases 6; referring to fig. 8, a plug element 11 is fitted on the sector base 6; as shown in fig. 20-21, the wire-plugging unit 11 includes a plugging column 1101, a limiting portion 8 and a wire-connecting portion 9, wherein the plugging column 1101 is fixed on the limiting portion 8; the plug wire element 11 is in plug fit with the plug cylinder 701; the wire elements 11 and the wire elements 11 are both conductive metal. The diameters of the insertion columns 1101 are different, and the inner diameters of the insertion cylinders 701 matched with the insertion columns are also different, so that the positive and negative poles or the live wire and the zero wire during insertion are distinguished through different diameters.

The limiting part 8 comprises a sector plate 801, one end face of the sector plate 801 is provided with a limiting partition plate 802 and a wiring part 9, and the limiting partition plate 802 is positioned on two sides of the wiring part 9; one end of the wiring part 9 is fixed with a waterproof part 10;

referring to fig. 8, 10 and 11, a first through hole 601 matching with the wiring portion 9 is formed in the center of a fan-shaped end surface of the fan-shaped base 6, and a through groove opening 602 is formed between the first through hole 601 and the peripheral side plane of the fan-shaped base 6; a fan-shaped notch 603 matched with the fan-shaped plate 801 is arranged at a position vertical to the notch opening 602, and a channel 604 matched with the limit baffle 802 is arranged on the notch opening 602. The limiting baffle 802 is provided to prevent rotation of the socket barrel 701 or the socket post 1101.

Referring to fig. 5-6, the cylinder cover 3 is a cylinder structure with one closed end, and the cylinder cover 3 is an insulating rigid element; the surface of the closed end of the cylinder body is uniformly provided with two second through holes 301 which are concentrically matched with the first through holes 601, the two second through holes 301 are used for passing wires, the existing wires are generally a live wire and a zero wire, therefore, the second through holes 301 are used for passing the wires, and the second through holes 301 are in interference fit with the outer insulating layer of the wires.

Referring to fig. 12 and 14, the connecting column 4 is an insulating elastic element and is in interference fit with the cylinder cover 3; a third through hole 401 in interference fit with the plug cylinder 701 is formed in one end face of the connecting column 4, and the third through hole 401 of the connecting column 4 and the plug wire element 11 comprise a plug column 1101.

The waterproof part 10 is fixed at one end of the wiring part 9, the waterproof part 10 is of an insulating elastic tube structure, and a plurality of shrinkage channels 1001 are uniformly distributed on one end face of the waterproof part 10 along the annular direction; the diameter of the shrink channel 1001 and the waterproof portion 10 is in the range of 0 to 60 degrees, and the angle is generally selected to be 5 degrees, 10 degrees, 15 degrees, 25 degrees, 30 degrees and 45 degrees; by passing the wire through the flashing 10, the inner diameter of the flashing 10 of the existing shrink channel 1001 becomes larger, so that the flashing 10 seals off the outer surface of the wire and thus blocks the entry of liquid.

The peripheral side of the wiring portion 9 is provided with a first separation notch 901 along the axial direction; one end of the wire connecting portion 9 is opened with a second partition notch 902 in the radial direction; the first and second partition notches 901 and 902 form a T-shaped groove through which the peripheral side portion of the wire connecting portion 9 is divided into two openable pieces.

When in use, the ends of two wires are stripped of the insulating layer, then the first connecting terminal 1 and the barrel cover 3 are sequentially inserted, then the wires pass through the waterproof part 10 of the connecting element 7, then the stripped ends of the wires are placed into the connecting part 9, and the periphery of the connecting part 9 is divided into two open-close sheets by a T-shaped groove to clamp the wires; then, the limiting part 8, the wiring part 9 and the like of the wiring element 7 are placed into the first through hole 601 of the fan-shaped base 6, the fan-shaped base 6 is extruded into the barrel cover 3 under the action of the fan-shaped plate 801 by pulling wires, and then the connecting column 4 is inserted into the barrel cover 3, wherein one part of the connecting column 4 is in the barrel cover 3, and the other part of the connecting column 4 is inside and outside the barrel cover 3; through interference fit, fix under elastic material's the deformation circumstances, third perforating hole 401 on the spliced pole 4 and a section of thick bamboo 701 interference fit of pegging graft simultaneously for a section of thick bamboo 701 has certain tension, has certain restriction when being convenient for and peg graft the cooperation of post 1101, frictional force when the increase sliding fit.

Then, the other wires are inserted into the barrel cover 3 of the second connecting terminal 2 in sequence, then the wires are passed through the waterproof part 10 of the wire inserting element 11, then the stripped wire end is put into the wire connecting part 9, and the periphery side part of the wire connecting part 9 is divided into two open and close pieces through a T-shaped groove by clamping with a caliper to clamp the wires; then, the stopper portion 8 and the wire connection portion 9 of the wire element 11 are inserted into the first through hole 601 of the sector base 6, and the sector base 6 is pressed into the barrel cover 3 by the sector plate 801 by pulling the electric wire.

After the process is completed, the insertion column 1101 of the second wiring terminal 2 is in insertion fit with the insertion cylinder 701 of the first wiring terminal 1, and meanwhile, the cylinder cover 3 of the second wiring terminal 2 is in insertion fit with the exposed connection column 4 of the first wiring terminal 1, so that connection is performed under the effect of interference fit.

Example two

Referring to fig. 28, the first connection terminal 1 includes a barrel cover 3 and a limiting post in interference fit with the barrel cover 3, wherein the limiting post is an insulating elastic element; the limiting column includes three fan-shaped bases 6, that is, the limiting column is a cylinder structure surrounded by the three fan-shaped bases 6, please refer to fig. 9, the fan-shaped base 6 is a cylinder structure with a fan-shaped cross section, which is equivalent to a 120-degree cylinder, and the three 120-degree cylinders are combined into a cylinder; referring to fig. 25-26, a wiring element 7 is fitted on the fan-shaped base 6; referring to fig. 22-24, the wire connecting element 7 includes an inserting tube 701, a limiting portion 8 and a wire connecting portion 9, wherein the inserting tube 701 is fixed on the limiting portion 8; the insertion tube 701 is provided with a contraction gap 702 along the axial direction on the peripheral side.

Referring to fig. 27 and 29, the second connection terminal 2 includes a barrel cover 3 and a limiting post in interference fit with the barrel cover 3, and the limiting post includes three fan-shaped bases 6; referring to fig. 9, a plug element 11 is fitted on the sector base 6; the plug wire element 11 comprises a plug-in post 1101, a limiting part 8 and a wiring part 9, and the plug-in post 1101 is fixed on the limiting part 8; the plug wire element 11 is in plug fit with the plug cylinder 701; the wire elements 11 and the wire elements 11 are both conductive metal. The diameter of the insertion column 1101 is different, and the inner diameter of the insertion cylinder 701 matched with the insertion column is also different. One of which has a different diameter to facilitate discrimination between live, neutral and earth wires and therefore must be distinguished, or one of which has a longer plug-in post 1101.

The limiting part 8 comprises a sector plate 801, one end face of the sector plate 801 is provided with a limiting partition plate 802 and a wiring part 9, and the limiting partition plate 802 is positioned on two sides of the wiring part 9; one end of the wiring part 9 is fixed with a waterproof part 10; the central angle of the sector plate 801 is 120 degrees; an insulating elastic blocking strip 803 is further fixed on one side of the limiting partition plate 802. For the arrangement of the three or more fan-shaped plates 801, a stopper 803 needs to be provided in the center portion to support and limit the center portion.

Referring to fig. 9, a first through hole 601 matching with the wiring portion 9 is formed in the center of a fan-shaped end surface of the fan-shaped base 6, and a through groove opening 602 is formed between the first through hole 601 and the peripheral side plane of the fan-shaped base 6; a fan-shaped notch 603 matched with the fan-shaped plate 801 is arranged at a position vertical to the notch opening 602, and a channel 604 matched with the limit baffle 802 is arranged on the notch opening 602.

Referring to fig. 5 and 7, the cylinder cover 3 is a cylinder structure with one closed end, and the cylinder cover 3 is an insulating rigid element; the surface of the closed end of the cylinder body is uniformly provided with three second through holes 301 which are concentrically matched with the first through holes 601, the number of the second through holes 301 is three, the second through holes are used for passing wires, the existing wires are generally a live wire and a zero wire, therefore, the second through holes 301 are used for passing the wires, and the second through holes 301 are in interference fit with the outer insulating layers of the wires.

Referring to fig. 13 and 15, the connecting column 4 is an insulating elastic element and is in interference fit with the cylinder cover 3; a third through hole 401 in interference fit with the plug cylinder 701 is formed in one end face of the connecting column 4, and the third through hole 401 of the connecting column 4 and the plug wire element 11 comprise a plug column 1101.

The whole process of insulating, sealing and connecting by adopting the elastic insulating rubber has convenient operation and convenient repeated use. The end face of the cylinder cover 3 may also be provided with a rubber cylinder covering the sheath of the wire for protection and sealing of the wire.

The peripheral side of the wiring portion 9 is provided with a first separation notch 901 along the axial direction; one end of the wire connecting portion 9 is opened with a second partition notch 902 in the radial direction; the first and second separating notches 901 and 902 form a T-shaped groove, through which the peripheral portion of the wire connecting portion 9 is divided into two openable pieces, which facilitates clamping and fixing of the metal wire.

When in use, the ends of the three wires are stripped of the insulating layers and then are sequentially inserted into the barrel cover 3 of the first connecting terminal 1, then the wires pass through the waterproof part 10 of the connecting element 7, then the stripped ends of the wires are placed into the connecting part 9, and the periphery of the connecting part 9 is clamped by a caliper and is divided into two open-close sheets through a T-shaped groove to clamp the wires; then, the limiting part 8, the wiring part 9 and the like of the wiring element 7 are placed into the first through hole 601 of the fan-shaped base 6, the fan-shaped base 6 is extruded into the barrel cover 3 under the action of the fan-shaped plate 801 by pulling wires, and then the connecting column 4 is inserted into the barrel cover 3, wherein one part of the connecting column 4 is in the barrel cover 3, and the other part of the connecting column 4 is inside and outside the barrel cover 3; through interference fit, fix under elastic material's the deformation circumstances, third perforating hole 401 on the spliced pole 4 and a section of thick bamboo 701 interference fit of pegging graft simultaneously for a section of thick bamboo 701 has certain tension, has certain restriction when being convenient for and peg graft the cooperation of post 1101, frictional force when the increase sliding fit.

The first embodiment and the second embodiment are applied to a patch board, and an existing patch board can be divided into three parts including a patch board, an electric wire and a plug, and the patch board comprises two connection modes:

the plug comprises a plug body, a first wiring terminal 1, a second wiring terminal 2, wires of different specifications, wiring boards of different lengths, a first wiring terminal 1, a second wiring terminal 2 and a second wiring terminal 2, wherein the first wiring terminal 1 is connected to a power connection wire end of the wiring board, the first wiring terminal 1 is connected to a power connection wire end of the plug, the second wiring terminal 2 is connected to the power connection wire end of the plug body through the second wiring terminal 2 in a fracture mode, and the first wiring terminal 1 is connected and matched with the second wiring terminal 2.

And secondly, a first wiring terminal 1 or a second wiring terminal 2 is connected to the power connection end of the plug board, a second wiring terminal 2 or a first wiring terminal 1 is connected to the power connection end of the plug, then the second wiring terminal 2 is connected to one end of the wire, the first wiring terminal 1 is connected to the other end of the wire, and the second wiring terminal 2 is connected with the first wiring terminal 1 in a matched mode.

When the plugboard is damaged, the electric wire and the plug can be reused, so that the plugboard can be replaced for reuse, the utilization rate of resources is improved, and the resource waste is prevented.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a waterproof plug-in type binding post subassembly which characterized in that: the wire connecting device comprises a first wire connecting terminal (1), a connecting column (4) and a second wire connecting terminal (2), wherein the first wire connecting terminal (1) and the second wire connecting terminal (2) are in inserted connection and matching through the connecting column (4);

the first wiring terminal (1) comprises a cylinder cover (3) and a limiting column in interference fit with the cylinder cover (3), wherein the limiting column comprises two or more fan-shaped bases (6); a wiring element (7) is matched on the fan-shaped base (6); the wiring element (7) comprises an insertion tube (701), a limiting part (8) and a wiring part (9), and the insertion tube (701) is fixed on the limiting part (8);

the second connecting terminal (2) comprises a cylinder cover (3) and a limiting column in interference fit with the cylinder cover (3), and the limiting column comprises two or more fan-shaped bases (6); a wire plugging element (11) is matched on the fan-shaped base (6); the plug wire element (11) comprises a plug post (1101), a limiting part (8) and a wire connection part (9), and the plug post (1101) is fixed on the limiting part (8); the plug wire element (11) is in plug fit with the plug barrel (701);

the limiting part (8) comprises a sector plate (801), one end face of the sector plate (801) is provided with a limiting partition plate (802) and a wiring part (9), and the limiting partition plate (802) is located on two sides of the wiring part (9); a waterproof part (10) is fixed at one end of the wiring part (9);

a first through hole (601) matched with the wiring part (9) is formed in the center of one fan-shaped end face of the fan-shaped base (6), and a through groove opening (602) is formed between the first through hole (601) and the peripheral side plane of the fan-shaped base (6); a fan-shaped notch (603) matched with the fan-shaped plate (801) is arranged at a position vertical to the notch opening (602), and a notch (604) matched with the limit baffle plate (802) is arranged on the notch opening (602).

2. The waterproof plug-in type terminal assembly according to claim 1, wherein the barrel cover (3) is a barrel structure with one closed end, and second through holes (301) concentrically fitted with the first through holes (601) are uniformly distributed on the surface of the closed end of the barrel.

3. A waterproof plug-in terminal assembly according to claim 2, characterised in that the connecting post (4) is an insulating elastic element and is an interference fit with the barrel housing (3); and a third through hole (401) in interference fit with the insertion cylinder (701) is formed in one end face of the connecting column (4).

4. A waterproof plug-in terminal assembly according to claim 3, characterised in that the plug elements (11) and the plug elements (11) are both of a conductive metal; the limiting column is an insulating elastic element; the cylinder cover (3) is an insulating rigid element.

5. A waterproof plug-in type terminal assembly according to claim 1, wherein said waterproof portion (10) is fixed to one end of the terminal portion (9), said waterproof portion (10) is of an insulating elastic tube structure, and a plurality of contraction channels (1001) are uniformly formed on one end surface of said waterproof portion (10) in a ring direction; the constricted channel (1001) is in the range of 0-60 ° to the diameter of the flashing portion (10).

6. A waterproof plug-in type terminal assembly according to claim 1, wherein the peripheral side of said terminal portion (9) is opened with a first partition notch (901) in the axial direction; one end of the wire connecting part (9) is provided with a second separation notch (902) along the radial direction; the first and second partition notches 901 and 902 form a T-shaped groove through which the peripheral side portion of the wire connecting portion 9 is divided into two open and close pieces.

7. A waterproof plug-in terminal assembly according to claim 1, characterised in that an insulating resilient stop strip (803) is also fixed to one side of the limiting partition (802).

8. A waterproof plug-in terminal assembly according to claim 1, characterised in that the peripheral side of the plug barrel (701) is provided with a shrink gap (702) in the axial direction.