CN2174787Y

CN2174787Y - Electric connector with screwhole

Info

Publication number: CN2174787Y
Application number: CN 93246920
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 electric connector with a screw hole, which is characterized in that the outer part of a connecting body which is provided with a deformed groove is provided with one or a plurality of conical surfaces; an outer cone of the connecting body is deformed by the oppression of the inner conical surface of a clamping cap so as to clamp cables which are inserted in a slotted cone. The other end of the connecting body is provided with an inner screw hole which is used for being screwed with an electric conduction screw of an electric appliance. The electric connector of the utility model can be widely used for connecting electric conduction screws with cables in electric appliances, such as medium and small-sized transformers, power capacitors, falling type safety devices, oil switches, etc.

Description

Electric connector with screwhole

The utility model is a kind of electrical connector, belongs to the accessory product in the electric equipment.

In electric equipment, be extensive use of the electrical connector of screw.In the prior art, the mode that electric equipment is connected with conductive cable has following several:

1, cable itself is bent into circle and is enclosed within on the conductive lever, cable circle plain washer and nut compressing;

2, use the aluminium matter end crimping twisted wire of the crimping forming terminal of copper-aluminium transition, its copper terminal is enclosed within on the conductive lever, with plain washer and nut compressing.

In first kind of connected mode, electric current will be through cable to plain washer, and plain washer is to clamping nut, and clamping nut is to the contact of three electricity of conductive lever, so have three series resistances and tertiary voltage to fall; In addition, the circle that is bent by cable and the internal diameter of plain washer all are greater than the external diameter that the conduction spiral shell is done, 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, the syndeton of transition joint and conductive lever exists and first kind of problem that connected mode is similar too.In addition, the crimping of transition joint and twisted wire needs special-purpose Press Plier, and the job site is usually not too convenient, and after the crimping moulding, cable has loosening phenomenon also the time in forming terminal.Therefore, all there is irrational aspect in these two kinds of connected modes.

The purpose of this utility model is the weak point at connected mode in the prior art, and a kind of novel electrical connector with screw is provided, in order to realize that cable is simple with conductive lever, to be connected reliably.

The electrical connector of the said band screw of the utility model is made up of connector 1 and fastening cap 2 two parts.Have for the hole 3 of settling cable in the centre of said connector 1, on this periphery for the connector 1 of settling cable one end, be provided with the distortion groove 4 more than two or two, correspond to the excircle part of the connector 1 of settling cable, 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; The other end at connector 1 is provided with the internal thread 7 that is connected with the electric equipment conductive lever, has on its neighboring for fastening device 8.Centre at said fastening cap 2, the through hole 9 that has current supply cable to pass, the internal thread 10 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 9, the fastening device 8 ' of confession is also arranged on the neighboring of fastening cap 2.

According to the said electrical connector of the utility model, can also in the hole 3 that current supply cable is settled, shape of threads or circular tooth 12 be set, to strengthen clamping force.

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 electrical connector described in the utility model are as follows: the internal thread on the connector can be screwed onto on the conductive lever of electric equipment, cable is inserted in the hole of fluting cone 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 lead-in wire or the cable that inserts.

The said electrical connector of the utility model has been compared following advantage with the formula of putting that is connected of the prior art:

1, electric current has only contacting of twice electricity through cable and fluting cone between fluting cone and conductive lever, has reduced contact resistance;

2, because cable is that cylinder contacts with the fluting cone, increased contact area;

3, there is not discharging gap in the structure, increased the fail safe and the reliability of contact.

4, owing to do not need to bend the cable circle, also do not need special-purpose Press Plier, therefore, site operation is simple, convenient.

Accompanying drawing 1: the electrical connector of band screw;

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 electrical connector of a conical surface.On the periphery of connector 1 for the arrangement cut cable, have three or four distortion grooves 4, at the other end that is connected with electric equipment, be provided with the fastening device 8 of confession of internal thread 7 and six square nut forms.The fastening device 8 ' of confession on the fastening cap 2 also is six square nut shapes, the through hole 9 that has current supply cable to pass in the centre of fastening cap 2, and internal thread 10 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 conical surfaces that match with it 11 of relative set.This embodiment can provide bigger clamping force.

The embodiment that accompanying drawing 3 provides, processing is provided with shape of threads or circular tooth 12 in the hole 3 of settling cable, so that bigger clamping force to be provided.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 electrical connector with screw, it is characterized in that, form by connector and fastening cap two parts, centre at said connector, have for the hole of settling cable, on this periphery, be provided with the distortion groove more than two or two for the connector of settling 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; The other end at connector is provided with the internal thread that is connected with electric equipment, has on its neighboring 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 electrical connector of claim 1, it is characterized in that, can in the hole that current supply cable is settled, shape of threads or circular tooth be set.

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