CN203423272U

CN203423272U - Electrical connection wire clamp

Info

Publication number: CN203423272U
Application number: CN201320291332.0U
Authority: CN
Inventors: 马栋梁
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-18
Filing date: 2013-05-18
Publication date: 2014-02-05
Anticipated expiration: 2023-05-18

Abstract

The utility model discloses an electrical connection wire clamp, comprising a terminal, the terminal is provided with a connecting hole for cooperating with a connection wire, and the contact surface of the connecting hole is provided with an arc groove (1) cooperating with the wire harness of the connection wire. The electrical connection wire clamp is advantageous in that, the shape of the internal structure is in consistent with that of the surface of a lead, and therefore, the installed wire clamp is closely attached to the lead, and the contact surface is enlarged by times. Besides, contact resistance is reduced, and current conduction is improved. Since a closed type structure is used, corrosive objects are prevented from entry, thereby reducing workload for subsequent maintenance work. The electrical connection wire clamp is suitable for use in long time and in the states of large current and high temperature. The electrical connection wire clamp also saves national resource, can be made small enough to meet a demand in the clean and neat environment, thereby achieving the purpose of saving non-ferrous metal.

Description

A kind of electrical connection wire clamp

Technical field

The utility model relates to connector technique field, more particularly, relates to a kind of electrical connection wire clamp.

Background technology

Device clamp rolls off the production line and is connected with the outlet terminal of electric equipment (as transformer, circuit breaker, instrument transformer, isolating switch, wall bushing etc.) for bus leading.Now the outlet terminal of conventional electric equipment has copper, aluminium matter and copper-aluminium transition electrical connection wire clamp three classes, and lead-out wire mostly is aluminium stranded conductor, steel reinforced aluminium conductor and copper cash, therefore device clamp is divided into again aluminum equipment wire clamp and two series of copper-aluminium transition equipment cable clamp.

Conventional electrical connecting clamp internal structure is all an arc surface, little with wire contact area, at long-time operation, large electric current, high temperature, there was dampness in the air in the situation that, be very easily corroded and be oxidized, reduce the contact area of wire clamp and wire, produce high temperature, in the situation of serious virtual connection, also can produce electric spark, burn out equipment, even also can blow wire interruption of power supply.

Therefore, how avoiding because contact area produces not electric discharge or produces the problem that high temperature even blows wire, is the current technical issues that need to address of those skilled in the art.

Utility model content

In view of this, the utility model provides a kind of electrical connection wire clamp, to avoid producing not due to contact area the problem of high temperature.

For achieving the above object, the utility model provides following technical scheme:

A wire clamp, comprises terminals, and described terminals have the connecting hole for coordinating with connecting line, and the contact-making surface of described connecting hole has the arc groove coordinating with each wire harness of described connecting line.

Preferably, in above-mentioned electrical connection wire clamp, described arc groove is semi-circular groove.

Preferably, in above-mentioned electrical connection wire clamp, described in each, arc groove coils in the shape of a spiral.

From above-mentioned technical scheme, can find out, the electrical connection wire clamp that the utility model provides, the internal structure of employing is consistent with the surface configuration of wire, and therefore mounted wire clamp and wire are completely closely connected, and contact area is large especially much doubly.What increase is not contact area simultaneously, has also reduced contact resistance, has increased the conducting of electric current.Owing to having adopted closed structure, also prevented that work has reduced workload to follow-up maintenance with the entering of corrosivity object.Be applicable to thus runing under state long-time, electric current, high temperature greatly.The utility model has also been accomplished saving resource, and that at the environment drop wire clip of neat and tidy, can do is less, reaches requirement, thereby reaches saving non-ferrous metal.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The side-looking structural representation of the electrical connection wire clamp that Fig. 1 provides for the utility model embodiment;

The structural representation of the electrical connection wire clamp inside that Fig. 2 provides for the utility model embodiment.

Embodiment

The utility model discloses a kind of electrical connection wire clamp, to avoid producing not due to contact area the problem of high temperature.

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1 and Fig. 2, the side-looking structural representation of the electrical connection wire clamp that Fig. 1 provides for the utility model embodiment; The structural representation of the electrical connection wire clamp inside that Fig. 2 provides for the utility model embodiment.

The electrical connection wire clamp that the utility model embodiment provides, comprises terminals, and described terminals have the connecting hole for coordinating with connecting line, and wherein, the contact-making surface of described connecting hole has the arc groove 1 coordinating with each wire harness of described connecting line.

The utility model is improved is the contact-making surface between wire clamp and wire, that is to say the internal structure of all electrical connection wire clamps.Adopt the closely connected structure of wire clamp and wire, the wire clamp after installing is for a long time, electric current greatly, and the conventional electrical connecting clamp than present use in the situation of high temperature is better.The face shaping of wire clamp is the same with existing electrical connection wire clamp, it can be line nose, electrical connection wire clamp, etc. face shaping according to difference, require to set, also can be made into that conductive gasket is directly installed between conventional electrical connecting clamp and wire, between device clamp and wire or between line nose is connected with wire.

The electrical connection wire clamp that the utility model provides, the internal structure of employing is consistent with the surface configuration of wire, and therefore mounted wire clamp and wire are completely closely connected, and contact area is large especially much doubly.What increase is not contact area simultaneously, has also reduced contact resistance, has increased the conducting of electric current.Owing to having adopted closed structure, also prevented that work has reduced workload to follow-up maintenance with the entering of corrosivity object.Be applicable to thus runing under state long-time, electric current, high temperature greatly.The utility model has also been accomplished saving national resources, and that at the environment drop wire clip of neat and tidy, can do is less, reaches requirement, thereby reaches saving non-ferrous metal.

In the utility model one specific embodiment, described arc groove 1 is semi-circular groove.Described in each, arc groove 1 coils in the shape of a spiral, and spiral angle is made according to the angle of twisted wire braiding.(general normally used twisted wire angle of weave is 15 degree) whole contact-making surface is held on the exposed epidermis of wire completely, thereby the contact area of increase wire clamp and wire reduces resistance.

Installation steps of the present utility model are as follows:

With degreaser, remove lip-deep greasy dirt, with finer wire, brush impurity elimination thing and surface film oxide, with clean cotton yarn, dip in alcohol by contact-making surface wiped clean again, after dry tack free, wipe surfaces, the conducting medium that dabs graphite powder or copper powder finally press from both sides electrical cable contact-making surface and twisted wire laminating, in bolt hole place outside, smear a little metal sealing glue fastening bolt, install after wire clamp and fill up metal sealing glue in the gap, edge between wire clamp and wire.

With contact line, use 831.6 square millimeters of 95-120 electrically connecting clamp and 95 copper stranded conductor contact theory contact-making surfaces, actual measurement contact area can reach 660 square millimeters, long-pending 2848.608 square millimeters of the theory contact area of embedded-type electric connecting clamp contact-making surface, 2611.224 square millimeters of real contact areas, being 3.425 times that the present electrically connecting clamp using and carrier cable theory contact area amass, is the electrically connecting clamp of use now and 3.956 times of carrier cable real contact area.

The theory contact area long-pending (by wire clamp width 60mm) of experimental article closed electrical connection packing ring and carrier cable is 2848.608 square millimeters, and long-pending with the theory contact area that is electrically connected wire clamp is 2197 square millimeters, and actual measurement contact area is 1800 square millimeters.2.7 times of 660 square millimeters of the electrical connection wire clamp that uses now and TJ95 wire contacts area.

Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. an electrical connection wire clamp, comprises terminals, and described terminals have the connecting hole for coordinating with connecting line, it is characterized in that, the contact-making surface of described connecting hole has the arc groove (1) coordinating with each wire harness of described connecting line.

2. electrical connection wire clamp as claimed in claim 1, is characterized in that, described arc groove (1) is semi-circular groove.

3. electrical connection wire clamp as claimed in claim 1, is characterized in that, arc groove described in each (1) coils in the shape of a spiral.