CN203386921U - Novel wire connector - Google Patents

Abstract

The purpose of the invention of the utility model is to mainly solve the problems of poor mechanical properties, easy aging and easy heating of the existing wire connection. The technical solution adopted by the utility model to solve the technical problem is: the new wire connector is mainly composed of a copper tube and an insulating nut. Structure, the outer layer of the copper pipe is wrapped with insulating plastic. The trifurcated arc-shaped copper sheet changes from thick to thin from the middle to both ends, and becomes narrow from wide, forming an inverted trapezoidal shape. The insulating nut is sleeved on the trifurcated arc-shaped copper sheet of the copper pipe and rotated from the outer end to the middle, and the trifurcated arc-shaped copper sheet is squeezed toward the center, and the opening becomes smaller, clamping the wire inserted into the opening. There are transverse concave-convex grooves on the copper sheet. When the contact area is large enough, the friction is increased and the mechanical strength against tensile force is increased. Plastic insulating nuts are used to effectively wrap the exposed copper wires and increase safety.

Description

New Wire Connector

technical field

The utility model relates to a wire connector. the

Background technique

The methods of wire connection in daily life mostly use crimping method, welding method and twisting method. The connection by crimping method is firm and reliable, and the contact resistance is small. The disadvantage is that professional hydraulic crimping pliers must be used, which is not practical in family and daily life. The welding connection is firm and reliable, and the contact resistance is small. The disadvantage is that a professional tool soldering iron is required, which is not easy for non-professional electricians, and it is inconvenient to operate. After welding, it needs to be wrapped with insulating tape. There is an aging problem, and it will leak electricity after a long time of use. The twisted wire method is the most common, simple to operate and easy to use. The disadvantage is poor mechanical properties. This kind of connection is not a cross-sectional connection, but more of a surface contact, so the contact area is much smaller than the middle section of the wire, and the resistance is naturally large. If the time is a little longer, the contact resistance at the connection will increase and generate heat, causing the circuit to be on and off, the voltage to fluctuate, and even cause a fire. Facts have proved that many circuit fires are caused by this connection method. Especially the connection of single-core wire and multi-core wire or multi-core wire and multi-core wire, this situation is more likely to happen. This connection method also requires insulating tape to be wound, and there is a problem of aging leakage. the

At present, the plug-in type wire connectors used in the market are mostly connected by shrapnel, which have weak mechanical strength and cannot bear large pulling force. Due to the high contact resistance, it is not suitable for the connection of high-power electrical appliances. the

Utility model content

The technical problem solved by the utility model is to provide a new wire connector which solves the problems of poor mechanical properties, easy aging, and too small contact surface and easy heating of the wire connection. the

The technical scheme of the utility model is: a new wire connector, the new wire connector is mainly composed of a copper tube and an insulating nut, and the two ends of the copper tube are formed by a three-branched arc with an inner ring concave-convex groove and an outer screw. Composed of copper sheets, the three-pronged arc-shaped copper sheet changes from thick to thin from the middle to both ends, and narrows from width to narrow, and the copper tube is wrapped with insulating plastic; the insulating nut is set on the three-pronged arc-shaped copper sheet of the copper tube and can be made of copper The outer end of the tube is rotated towards the middle. the

The utility model has the beneficial effects of high mechanical strength, small contact resistance, exquisite appearance, long service life, aging resistance, high pressure and high temperature resistance, safety and reliability; convenient installation, testing and maintenance; suitable for electrical connections of various lamps, junction boxes Wire conversion connection and electrical connection of household appliances; it has the advantages of convenient operation, high safety and wide application range. the

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described. the

Fig. 1 is a schematic structural view of a copper tube in an embodiment of the present invention. the

Fig. 2 is a cross-sectional view of the wire after the embodiment of the utility model is fixed. the

Detailed ways

In FIG. 1 , the two ends of the copper tube 2 are processed into the shape of a trifurcated arc-shaped copper sheet 22 , and the outer layer of the middle part is wrapped with an insulating plastic 21 . The outer end of the trifurcated arc-shaped copper sheet 22 has a ring-shaped concave-convex groove and an outer thread. From the middle to the outer end, it changes from thick to thin, and from wide to narrow, in the shape of an inverted trapezoid. the

In Fig. 2, when the insulating nut 1 is set on the three-branched arc-shaped copper sheet 22 with the external screw and rotates from the outer end to the middle, the three-branched arc-shaped copper sheet 22 is squeezed toward the center, and the opening becomes smaller, and it is clamped and inserted. Open wire. There are transverse concave-convex grooves on the trifurcated arc-shaped copper sheet 22. When the contact area is large enough, the friction is increased and the mechanical strength of the tensile force is improved. The insulating nut 1 is used to effectively wrap the exposed copper sheet and increase the friction. safety. the

Claims (1)

1. A new type of wire connector, which is mainly composed of copper tubes and insulating nuts, characterized in that: the two ends of the copper tubes are made of three-branched arc-shaped copper sheets with annular concave-convex grooves inside and screws outside. Composition, the three-fork arc-shaped copper sheet changes from thick to thin from the middle to both ends, and narrows from width to narrow. Rotate the end toward the middle. the

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