CN2174786Y

CN2174786Y - Novel conducting rod

Info

Publication number: CN2174786Y
Application number: CN 93246919
Authority: CN
Inventors: 黄水艳
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-02
Filing date: 1993-12-02
Publication date: 1994-08-17
Anticipated expiration: 2003-12-02

Abstract

The utility model relates to a novel conducting rod. The main characteristics are as follows: the lower part of the conducting rod in the prior art is provided with a connector with a deforming groove, one or more conical surfaces are arranged on the connector, and the outer cone body of the connector is pressed by the inner conical surface of the fastening cap to deform, so that a coil lead or a cable inserted into the grooved cone body is clamped. The utility model discloses the conducting rod of saying can be applied to the porcelain bushing of middle-size and small-size transformer, can conveniently be connected with transformer coil lead wire to can remove traditional welding process or nut and compress tightly connected mode, have advantages such as simple and practical reliable.

Description

Conducting rod

The utility model is a kind of conducting rod, belongs to the matching component of middle-size and small-size porcelain shell for transformer pipe.

Be arranged on the conducting rod in the porcelain shell for transformer pipe, an end is connected with the transformer coil lead-in wire.Interconnection technique of the prior art has mainly contained following dual mode:

1, hard copper unit line is bent into circle and is enclosed within on the conducting rod copper band plain washer and nut compressing;

2, the soft copper cable tail inserts in the hole of conducting rod bottom, with the welding of phosphor-copper oxygen welding.

In first kind of connected mode, electric current will be through the circle copper band to plain washer, and plain washer is to clamping nut, and clamping nut is to the contact of three electricity of conductive lever, and the position that electrically contacts for three times all is in collected state, so have three contact resistances and tertiary voltage to fall; The excessive overheated condition of concentrating of having created that electrically contacts and give connecting portion.In addition, the circle that is bent by circular copper wire and the internal diameter of plain washer all are greater than the external diameter of conductive lever, all exist a little space between they and the conductive lever, adding the conductive lever threaded portion of conductive lever in this little space all is about 60 ° thread vertex, in case there is electric current to pass through, just point discharge might take place between the little space of this band wedge angle, when serious, possible scorification conductive lever, even cause great equipment breakdown.

In second kind of connected mode, though overcome the shortcoming of first kind of type of attachment, but increased the oxygen welding welding sequence, and the lead wire insulation that high-temperature soldering wants scaling loss and carbonization to bandage inevitably, in addition, weld later conducting rod and must ward off tin again, also have unnecessary tin layer inevitably at the bottom of thread of conducting rod, thereby increased thread size, given that the installation of later conducting rod is fastening to have brought new trouble.Also have a problem that can not be ignored to be, because coil lead or leader cable all are the red copper materials, if conducting rod adopts the more cheap brass material of price, when implementing the oxygen welding operation, the conductor welding quality of unlike material also can not get reliable assurance, therefore, this defines this joint again and must adopt the more expensive red copper material of price.

The purpose of this utility model is in order to overcome the weak point of connected mode in the prior art, a kind of novel conductive bar to be provided, in order to safety, connect the lead-in wire of transformer coil reliably, easily.

The said conducting rod of the utility model is at connector of the bottom of the conducting rod of prior art processing 1 and fastening cap 2 of configuration.On said connector 1, hole 3 for the positioned coil lead-in wire is arranged, on this confession positioned coil goes between the periphery of connector 1 of an end, be provided with the distortion groove 4 more than two or two, in the excircle part of its connector 1, also be provided with the screw thread 5 that matches with fastening cap 2 and more than one or one with the conical surface that matches 6 of fastening cap 2; Centre at said fastening cap 2, the through hole 10 that passes for coil lead is arranged, the internal thread 12 and one or more and the inner conical surface 11 that connector 1 conical surface 6 matches that match with screw thread 5 on the connector 1 are arranged in the through hole 10, the fastening device 9 ' of confession is also arranged on the neighboring of fastening cap 2.

According to the said conducting rod of the utility model, can also in the hole 3 of settling, shape of threads or circular tooth 13 be set for coil lead.

Root at distortion groove 4 can be the slick and sly form of arcuation, to increase the intensity of distortion cone self.

The occupation mode and the principle of conducting rod described in the utility model are as follows: leader cable of transformer can be inserted in the hole on the connector, fastening cap is screwed onto has on the screw thread of distortion groove cone, the inner conical surface in the dependence fastening cap and the interaction of the conical surface on the connector, the distortion of compressing fluting cone, thus clamp coil lead or the cable that inserts.

The said conducting rod of the utility model has been compared following advantage with conducting rod of the prior art:

1, lead-in wire directly contacts with the face of cylinder of conducting rod endoporus, has increased contact area, electrically contacts number of times and is reduced to once, and contact resistance is reduced to minimum value;

2, there is not discharging gap in the structure, increased the fail safe and the reliability that connect;

3, do not need high-temperature soldering, when having saved welding material and Welder;

4, the zinc-plated operation of conducting rod need not carried out after wire bonds, has alleviated labour intensity;

5, conducting rod can adopt that price is cheap, the better brass material of mechanical strength;

6, production cost is low, installs and uses simple, convenient.

Accompanying drawing 1: the said conducting rod of the utility model;

A) connector; B) fastening cap;

Accompanying drawing 2: have N(N=2,3 ...) the connector schematic diagram of the individual conical surface;

Accompanying drawing 3: the version schematic diagram that tooth is arranged in the hole of connector.

Further specify formation of the present utility model below in conjunction with drawings and Examples:

Accompanying drawing 1 is for having only the conducting rod of a conical surface.Below traditional conducting rod, be provided with connector 1, hole 3 for the positioned coil leader cable is arranged in the middle of connector 1, on its periphery, have three or four distortion grooves 4, the other end at connector 1, be screw rod same as the prior art 7, have and the ending nose 8 and be the fastening device 9 of confession of six square nut forms of porcelain bushing clamping at the root of its screw rod 7.The fastening device 9 ' of confession on the fastening cap 2 also is six square nut shapes, the through hole 10 that has current supply cable to pass in the centre of fastening cap 2, and internal thread 12 that matches with screw thread 5 on the connector 1 and the inner conical surface 11 that matches with the conical surface 6.

Accompanying drawing 2 is the schematic diagram with connector of two and two the above conical surfaces.With accompanying drawing 1 different place be, connector 1 corresponding to the circumferential periphery of settling cable on, be provided with two or more conical surfaces 6, at this moment in fastening cap 2, also answer the two or more inner conical surfaces that match with it 11 of relative set.This embodiment can provide bigger clamping force.

The embodiment that accompanying drawing 3 provides is provided with shape of threads or circular tooth 13, so that bigger clamping force to be provided in the hole 3 of settling cable.This structure can be used among any embodiment.

The fastening device of said confession in the utility model can be that the nut structure form on plane is processed on all directions, six sides, four directions or two sides, its objective is in order to make the spanner can be to its application of force, so and not only be confined to the above-mentioned scheme that has provided.The fastening device of said confession all is suitable for for connector 1 and fastening cap 2, and can adopt different fastening apparatus structure forms to connector with fastening cap respectively in same set of electrical connector.

Claims

1, a kind of novel conductive bar, it is characterized in that, form by connector and two major parts of fastening cap, end at said connector, have for the hole of settling lead-in wire or cable, on this periphery, be provided with the distortion groove more than two or two for the connector of settling lead-in wire or cable one end, in the excircle part of its connector, also be provided with the screw thread that matches with fastening cap and more than one or one with the conical surface that matches of fastening cap; Root at screw rod has with the only nose of porcelain bushing clamping with for fastening device; In the centre of said fastening cap, the through hole that has current supply cable to pass, in through hole, have with connector on the internal thread of threads engaged and one or more inner conical surfaces that match with the connector conical surface; On the neighboring of fastening cap, also have for fastening device.

2, according to the said conducting rod of claim 1, it is characterized in that, can in the hole of settling, shape of threads or circular tooth be set for leader cable.

According to claim 1 or 2 said conducting rods, it is characterized in that 3, the root of distortion groove can be the slick and sly form of arcuation.