KR20130001675U - Apparatus for connecting electric wire - Google Patents

Abstract

The present invention relates to a device for safely sealing and connecting the power supply line and carbon fiber heating wire for supplying power.
The present invention implements a new type of wire connection method that seals the connection part by injection molding the connection part of both wires with connection resin when connecting the power line for power supply and carbon fiber heating wire for heat generation. It is possible to improve the workability and productivity through the simplification, and to improve the wiring strength.In particular, it can prevent the leakage, discharge, and overload caused by short circuit by blocking the mixing of moisture or foreign substances. It provides wire connection device that can reduce power resistance and improve power transmission efficiency and safety.

Description

Wire connection device {Apparatus for connecting electric wire}

The present invention relates to a wire connection device, and more particularly, to a device for safely sealing and connecting the power supply line and carbon fiber heating wire for supplying power.

Generally, it is used to transmit electric power or electric signal, and the electric wire used to be attached to an electric appliance should be particularly easy to bend, and it is insulated from thin wires by twisting several strands into core wires. This is called code.

In general, the electricity flowing through the electric wire becomes unstable as a result of connection failure when the cable of the stripped wire is not twisted smoothly or when the wiring is made in a state where the twist is low, resulting in unstable flow of current.

therefore. In order to maintain a stable flow of current by forming a closed circuit in which the wires and the wires are electrically connected, the ends of the stripped wires must be smoothly connected, and the connection of each cable must be in perfect condition.

Recently, the electronic and electrical appliances used in general homes, etc. are required for the advancement of technology, and each component is used by interconnecting wires.

For example, heating products, such as an electric mat, an electric sheet, a heating bag, a heating vest, etc., are wired inside for heating operation.

In the case of such a heating wire, a graphite heating wire is conventionally used, but since the graphite heating wire is very weak in strength, durability is degraded due to damage that is easily broken by impact, and high power consumption has an uneconomic problem.

Recently, carbon fiber is mainly used as a heating wire.

Since the carbon fiber has a tensile strength of about 207 N per 3K as a result of the measurement, the carbon fiber has excellent durability even when the heating wire is arranged in a curved shape or the folding operation of the heating wire is excellent, and the electrical resistance per m has about 130Ω. Because of the relatively low power consumption has been provided to manufacture power-saving products.

That is, the carbon fiber has many advantages that it is possible to manufacture a power-saving product with excellent tensile strength and low power consumption compared to conventional graphite heating wire or other materials.

In order to connect the carbon fiber heating wire and the power line to each other, a direct connection method of winding and connecting a conductor and a conductor of a wire, a soldering connection method of soldering and connecting the conductor and the conductor of the wire to each other, the conductor and the conductor of the wire The sleeve connecting method for connecting the to the sleeve made of metal, the terminal block connecting method for inserting the conductor of the electric wire into the terminal block and connected.

However, since the direct connection method, the solder connection method and the sleeve connection method connect only the conductor and the conductor in the peeled state of the wire, there is a high possibility that the connection site is dismantled or broken by the impact of the site. There is a problem that the electrical resistance is high.

In particular, the terminal block connection method has a problem that the stable binding is possible but the volume is large, the range of employment is limited.

As an example, peel off the tip covering layers of both wires made of rubber or plastic, twist the cores exposed to each other and twist them to each other, and then wrap insulating tape on the joints to prevent the core wires from being exposed to the outside and air, It is common to prevent moisture or water from seeping into it.

However, in the conventional connection structure as described above, the adhesive tape wound on the connection part is peeled off after a long time, or peeled off due to external conditions, so that the connection part is exposed, so that moisture or moisture is infiltrated from the outside. There was a risk of fire, short circuit, etc. due to a short circuit, and there was a problem in that the connection strength was weak and easily cut by an external impact.

In addition, as another example, in the case of connecting the wires in which copper wires are inserted and the heating wires in which heating wires are embedded, the copper wires and heating wires which are each embedded in a separate envelope are exposed to be in contact with each other, and then fixed with a predetermined connection medium. The connection is made by installing a separate connecting pipe so that the site is not exposed to the outside.

However, this connection method not only consumes a lot of time and manpower in connection work, but also has a high risk of contact failure due to easy breaking of relatively thin wires, and has a disadvantage in that work efficiency is very difficult.

Therefore, the present invention has been devised in view of such a point, and when the connection of the power cable for supplying power and the carbon fiber heating wire for heat generation, injection molding the connection portions of both wires with a connection resin to seal the connecting portions By implementing a new type of wire connection method, it is possible to improve the workability and productivity by simplifying the connection structure, and to improve the connection strength. It is an object of the present invention to provide a wire connection device that can reduce power resistance such as preventing overload due to a short circuit, thereby improving power transmission efficiency and safety.

In order to achieve the above object, the wire connection device provided by the present invention has the following features.

The wire connection device is a device for connecting a power wire having a copper wire in a sheath and a heating wire having a carbon fiber wire and a fiber yarn in the sheath, wherein the carbon fiber wire of the hot wire having the sheath removed from the copper wire of the power wire having the sheath removed therefrom. And the fiber yarns are wound, and the copper wire, carbon fiber wire and fiber yarn which are thus temporarily connected are injection molded by the resin for connection in the mold, so that the temporary connection portions of the copper wire, carbon fiber wire and fiber yarn are Surrounded by a resin body for connection is made of a form that can be wired integrally sealed.

Therefore, it is possible to facilitate the connection work between the power line and the hot wire, and in particular, it is possible to maintain a solid and stable connection state has a feature that can secure the safety for the connection site.

Here, it is preferable to cover the shrinkage tube around the copper wire and the carbon fiber wire and the fiber yarn which is connected temporarily, and then injection molding with a resin for connection after covering the shrinkage tube.

Then, heat is applied to the shrinking tube that is covered around the copper wire and the carbon fiber wire and the fiber that are connected temporarily, so that the shrink tube can be closely adhered to the circumference of the copper wire and the carbon fiber wire and the fiber yarn. It is preferable.

The wire connection device provided by the present invention has the following advantages.

By connecting the power line and the carbon fiber heating wire by injecting the connection part with the connection resin such as PVC while connecting the copper wire of the power cable and the carbon fiber and fiber yarn of the heating wire with a shrink tube, In addition to improving workability and productivity due to simplification, it can completely block external moisture and foreign material input, and improve the connection strength to the connection area, thereby preventing overload caused by short-circuit, discharge and short circuit without the influence of external force. It is possible to prevent the risk of disconnection and fire, etc., to improve the power transmission efficiency and stability.

1 is a perspective view showing a wire connection device according to an embodiment of the present invention
Figure 2a to 2f is a schematic diagram showing a method of connecting the power line and the heating wire using the wire connection device according to an embodiment of the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a wire connection device according to an embodiment of the present invention.

As shown in FIG. 1, the wire connection device is a device that simply and stably connects a power line and a heating wire, and ensures safety by improving the wiring strength as well as perfect airtightness of the connection portion between the power line and the heating wire. In the form of

To this end, a power wire 12 for supplying power from the power supply side and a heating wire 15 for heat generation operation of a heat generating product such as an electric mat are provided, and the power wire 12 at this time is covered with a copper wire 11 (10a). ), And the hot wire 15 also includes a carbon fiber wire 13 and a fiber yarn 14 inside the sheath 10b, that is, around the core of the carbon fiber wire 13. The fiber yarn 14 is formed in a surrounding shape.

The power supply line 12 and the heating wire 15 are integrally connected by the connection resin body 17 formed by injection molding by the connection resin.

For example, the carbon fiber wire 13 and the fiber yarn 14 of the heating wire 15 in which the sheath 10b is also removed around the copper wire 11 of the power supply line 12 from which the sheath 10a has been removed. In the wound state, the shrinkage tube 18 is covered around the copper wire 11 and the carbon fiber wire 13 and the fiber yarn 14 which are thus temporarily connected, and thus the shrinkage tube 18 is covered. Since the connection resin body 17 having a predetermined cylindrical shape is formed in one body, the connection portion between the power supply line 12 and the heating wire 15 is integrally connected by the connection resin body 17. It becomes possible.

As such, the connection resin body 17 is integrally injection molded around the copper wire 11, the carbon fiber wire 13, and the fiber yarn 14, thereby completely sealing the connection part at this time, thereby Problems such as disconnection, even when external force is applied due to the elasticity and rigidity exerted by the connection resin body 17, and the infiltration of foreign matter such as moisture into the connection portion between the 12 and the hot wire 15 is inherently blocked. It is possible to maintain a stable connection without

At this time, in the case of the shrinking tube 18 that is covered around the copper wire 11 and the carbon fiber wire 13 and the fiber yarn 14 connected to each other, the copper wire 11 is contracted while being heated in the covered state, ) And the carbon fiber wire 13 and the fiber yarn 14 can be completely adhered to the circumference, and eventually the connection portion between the power wire 12 and the heating wire 15 set in the mold during injection molding by the resin for connection It will be able to hold firmly.

2A to 2F are schematic views showing a method of connecting a power line and a heating line using a wire connection device according to an embodiment of the present invention.

As shown in Figs. 2A to 2F, first, the power wire 12 having the copper wire 11 in the sheath 10a and the hot wire 15 having the carbon fiber wire 13 and the fiber yarn 14 in the sheath 10b. ), And then stripping the sheath 10a of the power cord 12 and the sheath 10b of the heating wire 15 by a predetermined length so that the copper wire 11, the carbon fiber wire 13, and the fiber yarn 14 are of an appropriate length. Expose

Next, the carbon fiber wire 13 and the fiber yarn 14 of the heating wire 15 from which the sheath 10b has been removed are wound around the copper wire 11 of the power supply line 12 from which the sheath 10a has been removed.

At this time, after the carbon fiber wire 13 and the various strands of the fiber yarn 14 are evenly divided, the carbon fiber wire 13 is first wound around the copper wire 11 while being spirally wound, and then remains thereon. The fibrous yarn 14 wound is wound in the same manner.

Next, cover the shrinkage tube 18 so that the circumference of the copper wire 11 and the carbon fiber wire 13 and the fiber yarn 14 that is temporarily connected as described above is completely wrapped, and then the shrink tube 18 The heat is applied so that the shrink tube 18 is completely in contact with the circumference of the copper wire 11 and the carbon fiber wire 13 and the fiber yarn 14 which are connected to each other.

At this time, the shrinkage tube 18 is inserted into the sheath 10a of the power supply line 12 before tying the carbon fiber wire 13 and the fiber yarn 14 to the copper wire 11, and then left as a connection part. Pulling and covering can be applied, the method of heating the shrinkage tube 18 can be applied to a conventional method such as hot air.

Next, the connection portion between the copper wire 11, the carbon fiber wire 13, and the fiber yarn 14 in the state in which the shrinkage tube 18 is covered is set in the mold 16.

At this time, the mold 16 is a combination of the upper mold (16a) and the lower mold (16b) having each cavity (16d), the upper mold (16a) in the resin inlet (communication with the cavity 16d side) 16c) is formed so that a connection resin such as PVC can be injected therethrough.

Next, after setting the connection portion of the power supply line 12 and the heating wire 15, that is, the portion in which the shrinkage tube 18 is covered, in the cavity 16d of the lower mold 16b, the upper mold 16a is covered. The mold 16 is placed in the press 16e, the press 16e is lowered to pressurize the mold 16, and the resin for connection is injected through the resin inlet 16c on the mold 16 side.

At this time, the press 16e is a structure having a heater (not shown) for heating the mold 16, the molten resin supplied from the resin supply source (not shown) through the center portion of the resin in the upper mold (16a) The injection port 16c can be injected.

Next, after the connection resin is injected into the mold 16, the power supply line 12 and the heating wire 15 including the connection part together with the opening and closing of the upper and lower molds 16a and 16b after a predetermined time have passed. It is taken out in (16).

A connection resin body 17 for injection molding by resin is integrally formed at the connection portion of the power supply line 12 and the heating wire 15 taken out as described above.

Therefore, the connection portion between the copper wire 11 of the power supply line 12 and the carbon fiber 13 and the fiber yarn 14 of the heating wire 15 is primarily bound by the shrink tube 18, and for connection. Since it is finally wrapped by the connection resin body 17 made by injection molding by resin, the connection portion of the power supply line 12 and the heating wire 15 is integrally injection molded around the resin body for the injection molding ( By 17) it is possible to maintain a solid and stable connection while being completely sealed.

As such, the present invention implements a method of integrally molding the connection part between the power line and the heating wire with an injection-type resin, thereby simplifying the structure of the connection part and increasing the strength of the connection part. In addition, it is possible to block the input of moisture and foreign matter from the outside, there is an advantage that can ensure the stability, such as to prevent the short circuit, overload due to short circuit, discharge and short circuit.

10a, 10b: sheath 11: copper wire
12 power cord 13 carbon fiber wire
14: fiber yarn 15: heating wire
16: mold 16a: upper mold
16b: lower mold 16c: resin inlet
16d: cavity 16e: press
17: resin body for connection 18: shrink tube

Claims (3)

An apparatus for connecting a power wire 12 having a copper wire 11 in a sheath 10a and a heating wire 15 having a carbon fiber 13 and a fiber yarn 14 in the sheath 10b,
The carbon fiber wire 13 and the fiber yarn 14 of the heating wire 15 from which the sheath 10b has been removed are wound around the copper wire 11 of the power line 12 from which the sheath 10a has been removed. The copper wire 11, the carbon fiber wire 13, and the fiber yarn 14, which are thus temporarily connected, are injection molded in the mold 16 by a resin for connection, and the copper wire 11 and the carbon fiber wire are (13) and the temporary connection portion of the fiber yarn 14 is surrounded by a connection resin body (17) is a wire connection device, characterized in that formed in a form that can be connected while being integrally sealed.
The method according to claim 1, wherein the shrinkage tube 18 is covered around the copper wire 11 and the carbon fiber wire 13 and the fiber yarn 14 that is connected temporarily, so that the shrink tube 18 An electric wire connection device characterized in that the injection molding by the resin for connection in the covered state.
The shrinking tube (18) of claim 1, wherein heat is applied to the shrinking tube (18) covered around the copper wire (11) and the carbon fiber wire (13) and the fiber yarn (14) which are temporarily connected. Wire connection device, characterized in that the copper wire 11 and the carbon fiber wire 13 and the fiber yarn 14 can be in close contact.

Images