KR20150100287A

KR20150100287A - water-proofing cap and electric wire therewith

Info

Publication number: KR20150100287A
Application number: KR1020140021898A
Authority: KR
Inventors: 서성종
Original assignee: 주식회사 일진콤텍
Priority date: 2014-02-25
Filing date: 2014-02-25
Publication date: 2015-09-02

Abstract

In the present invention, a waterproof cap including a watertight wall having a core through-hole formed at the tip of a wire is provided, core wires of the electric wire are passed through core wire holes to provide the waterproof cap at the wire end, A waterproof cap waterproofing method of injecting an adhesive liquid into the waterproof cap to fill the inside of the waterproof cap with an adhesive liquid.

Description

[0001] The present invention relates to a water-proof cap and an electric wire therewith,

The present invention relates to a method of installing a waterproof cap and a waterproof cap which are installed at the tip of an electric wire having at least one core wire to prevent water, harmful gas or harmful liquid from flowing into the electric wire, and a wire provided with a waterproof cap.

Various connections are made such as a terminal is provided at the tip of the electric wire and the electric wire is connected to a connector or directly connected to an electric appliance. When the end of the electric wire is connected, water flows into the electric wire, Waterproofing work is carried out to prevent corrosion or disconnection of the electric wire. Japanese Patent Application Laid-Open No. 10-1144176 (the name of the invention: a method for attaching a waterproof seal to the outer surface of a single end of an electric wire) (hereinafter referred to as a "prior art") has a waterproof seal at the front end, In order to prevent such a problem.

1 is a cross-sectional view for explaining the structure of the prior art.

1, in order to prevent moisture from flowing into the inside of the electric wire in which the electric wire 22 is provided, the outer surface 21 of the electric wire has a waterproof seal (not shown) 40 are installed. If the waterproof seal 40 is formed in the waterproof seal 40 so that the diameter of the through hole is smaller than the diameter of the outer skin 21, 21) so as to prevent moisture from flowing into the wire.

However, even if the waterproof seal 40 is installed on the outer shell, there is a space between the plurality of strands forming the wire 22, and the pressure to remove the space is created by the waterproof seal 40 And the waterproof seal 40 strongly presses the sheath 21 of the wire, which causes a problem that the operation speed becomes very slow when considering the process of inserting the wire by the interference fit method.

In order to solve such a problem, a method has been employed in which a front end portion is pressed by using a heat-shrinkable tube at the end of a wire. However, when the core wires forming the wire form a plurality of strands, It is difficult to prevent the inflow of water or the inflow of water, and the work process becomes complicated due to a problem that heat must be applied.

SUMMARY OF THE INVENTION The object of the present invention is to provide a waterproof cap having a watertight wall having a tube shape and having a number of core wire through holes at the tip thereof, And to provide a waterproofed wire by such a waterproofing method.

A waterproof cap for protecting a front end portion of an electric wire having an outer shell and at least one core wire inside the outer shell, the waterproof cap comprising: a tubular body portion having a tubular shape; And a watertight wall in which the core through holes are formed so that each of them passes.

Further, in the present invention, it is preferable that the diameter of the core wire passing holes formed in the watertight wall decreases from the inside to the outside.

In the present invention, it is preferable that the thickness of the watertight wall is 2 to 20 times the thickness of the wall of the tubular body.

According to another aspect of the present invention, there is provided a waterproof cap comprising: a tubular body having a tubular shape; and a watertight cap formed on a distal end of the tubular body, the watertight wall having core through holes formed to allow core wires of the electric cable to pass therethrough; Inserting the tip of the wire into the opening of the rear end of the waterproof cap and passing the core wires through the wire through holes to install the waterproof cap at the wire tip; And injecting an adhesive liquid into the opening of the rear end of the waterproof cap to fill the inside of the waterproof cap with the adhesive liquid.

Further, in the present invention, in the adhesive liquid filling step, the front end portion of the waterproof cap formed with the watertight wall is arranged vertically downward, the opening portion at the rear end of the waterproof cap is arranged vertically upward, .

According to another aspect of the present invention, there is provided a waterproof wire comprising a wire having at least one core wire arranged inside a shell, and a waterproof cap provided at a tip of the wire, the waterproof cap comprising: And a watertight wall formed at a distal end of the tubular body, wherein the tip of the electric wire is inserted through the opening of the rear end of the tubular body, and then the core wires peeled from the shell are exposed to the outside through the core- And an adhesive liquid is filled between the waterproof cap and the wire inserted into the waterproof cap.

According to the present invention having the above-mentioned problems and solutions, since the core wire passes through the core wire through holes of the watertight cap of the waterproof cap, the waterproof cap is primarily waterproofed, As a matter of course, the core wires and the core wires are adhered to each other by the adhesive liquid, thereby achieving a second waterproofing and a complete waterproofing.

Further, according to the method of filling the adhesive liquid according to the present invention, since the adhesive liquid is filled from the opening portion of the waterproof cap toward the watertightness wall, leakage of the adhesive liquid is prevented, and the core wires are prevented from adhering to the outside of the waterproof cap.

In addition, the number of processes can be shortened compared with the process of waterproofing using a heat-shrinkable tube or the like, thereby reducing the waterproofing cost.

1 is a cross-sectional view for explaining the structure of the prior art.
FIG. 2A is a front view of a wire in which the waterproof cap of the present invention is installed, and FIG. 2B is a sectional view of FIG. 2A.
3 is a cross-sectional view illustrating an embodiment of the waterproof cap of the present invention.
4 is a cross-sectional view illustrating an electric wire that has been waterproofed by the waterproof cap of the present invention.

FIG. 2A is a front view of a waterproof cap of the present invention, FIG. 2B is a sectional view of FIG. 2A, and FIG. 3 is a cross-sectional view illustrating an embodiment of the waterproof cap of the present invention.

The waterproof cap 100 of the present invention can be installed in various electric wires, and FIGS. 2A and 2B illustrate one electric wire, and the scope of application of the present invention is not limited thereto.

The illustrated wire 200 includes four core wires 212 inside a shell 201 and a shielding layer 202 formed on the inner surface of the shell 201. Each core wire 212 is connected to a core wire And an outer shell 210 and a copper wire 211 inside the core wire sheath 210.

The waterproof cap 100 shown in FIG. 3 is made of a soft synthetic resin material and has a tubular body 101 having a circular or polygonal cross-section, and a tubular body 101 formed at the tip of the tubular body 101 And a watertight wall 103 formed with at least one core wire passage hole 105 formed therein. At this time, the rear end of the tubular body is opened to allow the wire 200 to be inserted, and the number of the core wire passing holes 105 is formed to coincide with the number of core wires. Further, the watertight wall 103 is formed to have a thickness of about 2 to 20 times the thickness of the wall of the tube portion, so that the core wire can pass easily without being deformed when passing through the core wire passage holes 105. At this time, if the thickness of the watertight wall 103 exceeds 20 times of the pipe wall, the flexibility of the electric wire is lowered, which makes it difficult to bend the connector in a connecting operation.

The shape of the core wire passing hole 105 is tapered so that the diameter becomes smaller from the inner side of the watertight wall 105 toward the outer side so that the core wire 212 is easily inserted into the core wire passing hole 105 , So that the adhesive liquid, which will be described later, is not leaked.

4 is a cross-sectional view illustrating an electric wire that has been waterproofed by the waterproof cap of the present invention.

4, the front end of the wire 200 is peeled so that the strands of the core wire 212 are exposed and the exposed core wires 212 are wound on the corresponding core wire holes 105, So that the waterproof cap 100 is installed at the front end of the electric wire 200.

After the watertight cap 100 is installed, the watertight wall 103 of the watertight cap 100 is directed to the vertically downward side, that is, the ground, and the opposite open side is vertically upwardly directed toward the sky. The adhesive liquid 300 is injected between the opening of the waterproof cap 100 and the gap of the outer surface of the electric wire 200 using a tool. When the adhesive liquid 300 is injected into the waterproof cap 100, the adhesive liquid 300 flows along the space between the tubular portion of the waterproof cap 100 and the wire enclosure 201 as shown in the figure The tapered space portion of the core wire passage hole 105 is filled to form a completely watertight structure and the end diameter of the core wire passage hole 105 is formed smaller than the core wire sheath to form a structure in which core wires are pressed, The adhesive liquid does not leak to the outside through the core wire passing hole 105. Therefore, the adhesive liquid does not adhere to the core wires exposed to the outside of the waterproof cap 100, and workability is improved.

Although the above description has been made with respect to the wires having four core wires, various explanations of the present invention can be made by the waterproofing method applicable to both wires having a shell and having one or more core wires inside the shell. Therefore, the scope of protection of the present invention should be determined by the following claims.

100: waterproof cap 101:
103: Watertight wall 105: Core penetration hole
200: wire 201: sheath
210: Core wire sheath 211: Copper wire
212: core wire 300: adhesive liquid

Claims

Claims [1] A waterproof cap for protecting a front end of an electric wire having an outer shell and at least one core wire inside the outer shell, the waterproof cap comprising:
And a watertight cap formed on the tip of the tubular body and having a core through hole formed therein to allow the core wires to pass through the tubular body.

The waterproof cap according to claim 1, wherein the core through-holes formed in the watertight wall have a smaller diameter from the inside to the outside.

The waterproof cap according to claim 1, wherein the thickness of the watertight wall is two to twenty times the thickness of the wall of the tubular body.

Preparing a waterproof cap including a tubular body portion and a watertight wall formed at a distal end of the tubular body and having core wire through holes formed therein to allow core wires of the electric wire to pass therethrough;
Inserting the tip of the wire into the opening of the rear end of the waterproof cap and passing the core wires through the wire through holes to install the waterproof cap at the wire tip;
And injecting an adhesive liquid into the open end of the rear end of the waterproof cap to fill the inside of the waterproof cap with the adhesive liquid.

The waterproof cap according to claim 4, wherein, in the adhesive liquid filling step, the front end portion of the waterproof cap formed with the watertight wall is vertically downward, the opening portion at the rear end of the waterproof cap is arranged vertically upward, Wherein the waterproofing of the electric wire is carried out.

Claims [1] A waterproof wire comprising at least one core wire disposed inside a shell and a waterproof cap provided at a tip of the wire,
Wherein the waterproof cap includes a tubular body portion having a tubular shape and a watertight wall having a core through hole formed at a tip portion of the tubular body portion,
The core wire having been peeled off from the sheath after being inserted through the opening of the rear end of the tube is exposed to the outside through the core wire passing holes and the wire inserted between the waterproof cap and the waterproof cap Wherein the waterproof wire is filled with an adhesive liquid.

7. The waterproof wire of claim 6, wherein the core through holes are tapered.

The waterproof wire according to claim 7, wherein an adhesive liquid is filled between the core wire through holes and the core wire.