CN219393838U - Waterproof binding post - Google Patents

Abstract

The utility model discloses a waterproof wiring terminal which comprises an electric connecting piece, wherein a first end of the electric connecting piece is connected with a first wire, a second end of the electric connecting piece is connected with a second wire, an insulating shell is arranged on the outer side of the electric connecting piece, sealing pieces are respectively arranged between the insulating shell and the first wire and between the insulating shell and the second wire, end covers are arranged at two ends of the insulating shell and are used for extruding the end parts of the insulating shell to radially shrink, so that the outer side face of the sealing piece is tightly connected with the insulating shell, and the inner side face of the sealing piece is tightly connected with the first wire or the second wire. According to the utility model, the sealing element is arranged in the insulating shell, so that the insulating shell can form tighter physical protection at the joint of the first wire and the second wire, including dust prevention, water prevention, insulating protection, impact damage prevention and the like, and the use safety is improved.

Description

Waterproof binding post

Technical Field

The utility model relates to the technical field of wiring terminals, in particular to a waterproof wiring terminal.

Background

The connection terminal is an accessory product for realizing electrical connection, and is industrially divided into the category of connectors. As the degree of industrial automation becomes higher and the industrial control requirements become more stringent and precise, the amount of the terminal blocks used is gradually increased. With the development of the electronic industry, the use range of the wiring terminal is more and more, and the variety is also more and more.

In the actual circuit construction process, outdoor environmental lines are often required to be corroded easily in the outdoor connection process, such as rain and snow weather, rainwater or snow water can corrode the lines, wiring end heads of the lines are exposed, protection is poor, the lines are easy to corrode, electrochemical corrosion is easy to occur particularly when wires of two connection lines are different, and therefore waterproofing is required to be carried out on wiring ends of the lines. The Chinese patent application No. CN202223414377.0 discloses a self-locking waterproof wiring connection device which comprises a connection male head and a connection female head; the connecting male comprises a male shell component, a male connecting terminal and a male rubber plug; the male shell component is a hollow cavity, and a plurality of clamping grooves and a plurality of releasing clamping grooves are formed in the male shell component; the connecting female head comprises a female head shell component, a female head wiring terminal and a female head rubber plug; the female head shell component is a hollow cavity, a plurality of buckles are arranged on the hollow cavity, and the buckles are respectively matched with the corresponding clamping grooves and the corresponding releasing clamping grooves to realize detachable electric connection of the male head and the female head; the female connecting terminal is detachably connected in the female housing component and can be in contact electrical connection with the male connecting terminal; the female head rubber plug is arranged at the tail end of the female head shell component. Although the waterproof problem of the terminal can be improved to a certain extent in the above patent, the whole structure is complex and the assembly is inconvenient.

The above disadvantages are to be improved.

Disclosure of Invention

In order to solve the problems that the whole structure of the existing waterproof wiring terminals is complex and assembly is inconvenient, the utility model provides the waterproof wiring terminal.

The technical scheme of the utility model is as follows:

the utility model provides a waterproof binding post, includes electric connector, electric connector first end is connected with first wire, and the second end is connected with the second wire, electric connector's the outside is provided with insulating housing, insulating housing with first wire with be provided with the sealing member between the second wire respectively, insulating housing's both ends are provided with the end cover, the end cover is used for the extrusion insulating housing tip radial contraction, make the lateral surface of sealing member with insulating housing zonulae occludens, and make the medial surface of sealing member with first wire or second wire zonulae occludens.

Further, the electric connecting piece is a copper-aluminum transition connecting pipe, the first lead is an aluminum wire and is connected with an aluminum wiring terminal of the electric connecting piece, and the second lead is a copper wire and is connected with a copper wiring terminal of the electric connecting piece.

Further, the electrical connector is stepped tubular.

Further, the insulating shell is connected with the end cover through threaded fit.

Further, radial elastic shrinkage portions are respectively arranged at two ends of the insulating shell, each radial elastic shrinkage portion comprises a plurality of holding claws, gaps are formed between the holding claws, conical shrinkage portions are arranged inside the end covers, the conical shrinkage portions extrude the radial elastic shrinkage portions to shrink radially when the end covers are connected with the insulating shell, and the sealing element is pressed towards the first conducting wire or the second conducting wire.

Further, the wall surface of the conical contraction part is uniformly provided with compression ribs, and the compression ribs protrude out of the wall surface of the conical contraction part.

Further, the insulating housing and the outer side of the end cover are both provided with an anti-slip part.

Further, the outer side of the insulating shell is further provided with a prismatic section, the cross section of the prismatic section is approximately regular polygon, and the number of edges is even.

Further, the inside both ends of insulating housing are provided with the accommodation portion, the sealing member sets up in the accommodation portion.

Further, the sealing element is a silica gel sleeve.

The utility model according to the scheme has the beneficial effects that:

1. according to the utility model, the sealing piece is arranged in the insulating shell, the joint of the first wire and the second wire is sealed in the insulating shell under the action of the end cover extruding the insulating shell, so that the assembly is convenient, the insulating shell can physically protect the joint of the first wire and the second wire, and the safety of use is improved, including dust prevention, water prevention, insulating protection, impact damage prevention and the like.

2. According to the utility model, the copper wire and the aluminum wire are respectively connected by crimping the two sides of the copper-aluminum transition connecting pipe, so that the connection of different wires is realized, and compared with the traditional connection mode, on one hand, the parts are fewer, the assembly is convenient and quick, and the economy is good; on the other hand, the shape is regular, the space is saved, the installation is convenient, and the appearance is attractive.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic diagram of an explosive structure according to the present utility model;

FIG. 3 is a schematic view of the internal structure of the present utility model;

FIG. 4 is a schematic view of an insulating housing according to the present utility model;

FIG. 5 is a schematic view of the structure of the end cap of the present utility model;

fig. 6 is an enlarged view of the structure at a in fig. 3.

Wherein, each reference sign in the figure: 1. an electrical connection; 2. a first wire; 3. a second wire; 4. an insulating housing; 401. a radially elastic constriction; 4011. holding claws; 4012. a notch; 402. an anti-slip part; 403. a prismatic section; 404. an accommodating portion; 5. a seal; 6. an end cap; 601. a tapered constriction; 602. the rib is pressed.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" or "connected" to another element, it can be directly or indirectly on the other element. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and the like 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. The meaning of "multiple" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one, unless specifically defined otherwise.

As shown in fig. 1 to 3, a waterproof terminal according to an example of the present utility model includes an electrical connector 1, a first end of the electrical connector 1 is connected with a first wire 2, a second end is connected with a second wire 3, an insulating housing 4 is disposed on an outer side of the electrical connector 1, sealing members 5 are disposed between the insulating housing 4 and the first wire 2 and the second wire 3, respectively, end caps 6 are disposed on two ends of the insulating housing 4, and the end caps 6 are used for compressing the end portions of the insulating housing 4 to radially shrink, so that an outer side surface of the sealing member 5 is tightly connected with the insulating housing 4, and an inner side surface of the sealing member 5 is tightly connected with the first wire 2 or the second wire 3.

In this example, when in use, the first wire 2 and the second wire 3 are first connected to the first end and the second end of the electrical connector 1, respectively, in a specific connection manner including but not limited to crimping and welding, so that the first wire 2 and the second wire 3 are electrically connected through the electrical connector 1. Then, two sealing elements 5 are respectively installed in the insulating housing 4, then the electrical connector 1 with the wires is installed in the insulating housing 4, at this time, one sealing element 5 is arranged between the insulating housing 4 and the first wire 2, the other sealing element 5 is arranged between the insulating housing 4 and the second wire 3, then the end cover 6 is connected with the insulating housing 4, the end cover 6 can press the insulating housing 4 to shrink radially, the insulating housing 4 presses the sealing element 5, at the first end of the insulating housing 4, the sealing element 5 is respectively in close contact with the inner wall of the insulating housing 4 and the outer side of the first wire 2 to form a seal, and at the other end of the insulating housing 4, the sealing element 5 is respectively in close contact with the inner wall of the insulating housing 4 and the outer side of the second wire 3 to seal the joint of the first wire 2 and the second wire 3 in the insulating housing 4, so that the insulating housing 4 can perform physical protection on the joint of the first wire 2 and the second wire 3, including dust prevention, water prevention, insulation protection, impact protection and the like, and the use safety is improved.

As shown in fig. 2, the electrical connector 1 is a copper-aluminum transition connection pipe, the first wire 2 is an aluminum wire, and is connected to an aluminum terminal of the electrical connector 1, and the second wire 3 is a copper wire, and is connected to a copper terminal of the electrical connector 1. During connection, the insulation protection skin on the outer side of the end part of the first lead 2 is stripped off, so that the conductor core of the first lead 2 is exposed, the exposed length of the conductor core is equivalent to the depth of the aluminum wiring end of the copper-aluminum transition connecting pipe, the exposed conductor core of the first lead 2 is inserted into the aluminum wiring end of the copper-aluminum transition connecting pipe, and the outer side of the aluminum wiring end is tightly pressed by using a wire pressing clamp, so that the first lead 2 is tightly connected with the aluminum wiring end. Similarly, the second wire 3 is connected to the copper terminal of the copper-aluminum transition connection pipe, so that the first wire 2 and the second wire 3 are electrically connected through the electrical connector 1. The copper-aluminum transition connecting pipe is adopted for connection, because the potential safety hazard of copper-aluminum connection is particularly large, galvanic corrosion can be generated, copper wires and aluminum wires are connected together, and the aluminum wires are easy to corrode. Still another reason is that the oxide layer on the surface of the aluminum wire may cause poor contact of the joint portion to generate heat, and as a result of the heat generation, oxidation of the aluminum wire is aggravated, eventually resulting in poorer and poorer electrical conductivity at the joint. The traditional connection mode is that a copper wire nose and an aluminum wire nose are stacked up and down and fixed by locking screws, and the connection mode has the defects that on one hand, parts are more, assembly is inconvenient and the construction process is complicated; and the economy is poor; on the other hand, the occupied space is larger, so that the installation is inconvenient and the appearance is not attractive. In the example, copper wires and aluminum wires are respectively crimped on two sides of a copper-aluminum transition connecting pipe, so that connection of different wires is realized. Compared with the traditional connection mode, on one hand, the parts are fewer, the assembly is convenient and quick, and the economy is good; on the other hand, the shape is regular, the space is saved, the installation is convenient, and the appearance is attractive. The electrical connector 1 has a stepped tubular shape. This is because the copper wire has a larger load carrying capacity than the aluminum wire, and the wire diameter required to carry the copper wire under the same load is smaller. In addition, the ladder tubular structure is convenient for install and position, positions through the diameter transformation of the electric connector 1, and is convenient for installing the electric connector 1 and the insulating shell 4 in place.

As shown in fig. 2, in a preferred embodiment, the insulating housing 4 is provided with external threads near both ends, respectively, the end cover 6 is provided with internal threads, and the insulating housing 4 is coupled with the end cover 6 by the external threads and the internal threads. The insulating shell 4 and the end cover 6 are connected through threads, and the disassembly and assembly are convenient and quick.

In practical application, the utility model can also adopt other detachable connection modes, including but not limited to the following connection modes, such as using an end cover 6C-shaped buckle to be buckled on the insulating shell 4; or the end cover 6 is a sliding sleeve which is in sliding sleeve connection with the insulating shell 4.

As shown in fig. 3 and 4, in a preferred example, two ends of the insulating housing 4 are respectively provided with a radial elastic shrinkage portion 401, the radial elastic shrinkage portion 401 includes a plurality of holding claws 4011, gaps 4012 are provided between the holding claws 4011, a tapered shrinkage portion 601 is provided inside the end cover 6, and the tapered shrinkage portion 601 presses the radial elastic shrinkage portion 401 to shrink radially when the end cover 6 is connected with the insulating housing 4, and the sealing member 5 is pressed against the first conductive wire 2 or the second conductive wire 3. The wall surface of the conical shrinkage part 601 is uniformly provided with the pressing ribs 602, and the pressing ribs 602 protrude out of the wall surface of the conical shrinkage part 601. When the insulating housing 4 and the end cover 6 are connected, as the screw thread fit length between the end cover 6 and the insulating housing 4 is increased, the inner diameter of the contact between the tapered shrinkage portion 601 and the radial elastic shrinkage portion 401 is gradually reduced, so that the holding claws 4011 gradually shrink to compress the sealing member 5, the compressing ribs 602 gradually contact the outer side surfaces of the holding claws 4011, the inner diameter of the tapered shrinkage portion 601 is further reduced due to the fact that the compressing ribs 602 protrude out of the wall surfaces of the tapered shrinkage portion 601, the compressing ribs 602 can be clamped into the gaps 4012 between the holding claws 4011, and the rotating friction force between the end cover 6 and the insulating housing 4 is increased, so that the connection is more stable. In addition, the notches 4012 between the holding claws 4011 are obliquely arranged, so that the holding claws 4011 can twist to a certain extent when radially contracting, the elastic deformation range is larger, and the holding claws are not easy to break and damage.

As shown in fig. 4, in a preferred example, both ends of the inside of the insulating housing 4 are provided with receiving portions 404, and the sealing member 5 is provided in the receiving portions 404. In the mounting process, the two sealing members 5 are firstly mounted in the accommodating part 404, and the two sealing members 5 are limited at the fixed position of the insulating shell 4, so that the subsequent mounting is facilitated. The sealing piece 5 is a silica gel sleeve, and the silica gel has good sealing performance and can better prevent water.

As shown in fig. 1, in a preferred example, the insulating housing 4 and the outside of the end cap 6 are each provided with an anti-slip portion 402. The outer side of the insulating housing 4 is further provided with a prism section 403, the cross section of the prism section 403 is approximately regular polygon, and the number of sides is even. Through setting up anti-skidding portion 402, when manual twisting, can increase the frictional force between hand and insulating housing 4 and end cover 6, lead to setting up prismatic section 403, the insulating housing 4 is pressed from both sides tightly to the convenient to use spanner to the dismouting of being convenient for.

Specific installation procedure

S1, firstly, mounting the sealing member 5 into the accommodating portion 404 of the insulating housing 4;

s2, sequentially passing a second lead 3 (copper wire) through the end cover 6 and the insulating shell 4 from right to left, and passing a first lead 2 (aluminum wire) through the other end cover 6 from left to right;

s3, connecting the first lead 2 with an aluminum wiring end of a copper-aluminum transition connecting pipe, and connecting the second lead 3 with a copper wiring end of the copper-aluminum transition connecting pipe;

s4, installing the copper-aluminum transition connecting pipe connected with the wire into the insulating shell 4 from left to right;

s5, screwing the end cover 6 onto the insulating shell 4.

The above-mentioned installation process is only a preferred installation process, and the installation is not strictly performed according to the above-mentioned process, and the order of the installation process can be changed, for example, the installation process S1 is only completed before the installation process S4, but the sealing element 5S2 needs to be sleeved on the first wire 2 or the second wire 3.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The utility model provides a waterproof binding post, includes electric connector, electric connector first end is connected with first wire, and the second end is connected with the second wire, its characterized in that, electric connector's outside is provided with insulating housing, insulating housing with first wire with be provided with the sealing member between the second wire respectively, insulating housing's both ends are provided with the end cover, the end cover is used for the extrusion insulating housing tip radial contraction for the lateral surface of sealing member with insulating housing zonulae occludens, and make the medial surface of sealing member with first wire or second wire zonulae occludens.

2. The waterproof terminal of claim 1, wherein the electrical connector is a copper-aluminum transition connector, the first wire is an aluminum wire connected to an aluminum terminal of the electrical connector, and the second wire is a copper wire connected to a copper terminal of the electrical connector.

3. A waterproof terminal according to claim 2, wherein the electrical connector is stepped tubular.

4. A waterproof terminal according to claim 1, wherein the insulating housing is connected to the end cap by a screw-fit.

5. The waterproof wiring terminal as in claim 4, wherein the two ends of the insulating housing are respectively provided with a radial elastic contraction portion, the radial elastic contraction portion comprises a plurality of holding claws, gaps are arranged between the holding claws, a conical contraction portion is arranged inside the end cover, and the conical contraction portion presses the radial elastic contraction portion to radially contract when the end cover is connected with the insulating housing, so that the sealing element is pressed towards the first wire or the second wire.

6. The waterproof terminal as set forth in claim 5, wherein said tapered constriction wall surfaces are uniformly provided with pressing ribs protruding from said tapered constriction wall surfaces.

7. A waterproof terminal according to claim 1, wherein the insulating housing and the outside of the end cap are each provided with an anti-slip portion.

8. The waterproof terminal as claimed in claim 1, wherein the outer side of the insulating housing is further provided with a prism section, the cross section of the prism section is approximately regular polygon, and the number of sides is even.

9. A waterproof terminal according to claim 1, wherein the insulating housing is provided with receiving portions at both ends thereof, and the sealing member is provided in the receiving portions.

10. A waterproof terminal according to any one of claims 1 to 9, wherein the sealing member is a silicone sleeve.