SU758325A1 - Contact terminal - Google Patents

Description

The invention relates to electrical engineering, in particular to devices for screwless fastening of wires to electrical equipment.

. A device known as a contact clamp, which is used to attach both single-core and multiconductor wires. This clip consists of an insulating body with a hole that goes into the recess.

An i-shaped and flat spring is placed in the recess, between which a bare wire end is inserted through the holes [1 "|. /

'The disadvantage of the device is that before entering the ends of the stranded wire must be necessarily decorated (twisting the wire reinforced by immersion in solder). In addition, releasing the wire requires insertion into the hole in the body of the auxiliary tool. Time spent on these operations!

A device of contact clamp 25 is known, in an insulating housing of which a conductive rod is arranged, made with a conical opening for inserting a wire, which passes into a narrow cylindrical recess. End of

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the wires in the carbon are held ”due to the pressure of the ball with the spring. The design described makes it possible to quickly and easily connect a wire to the test device with one hand. [2].

However, the device cannot be used to clamp a multi-wired thin-wire strand. Meanwhile, when connecting test instruments and other devices to electrical equipment, most of them deal with wires, the ends of which are an unformed bundle of thin wires. For the temporary connection of several such wires to test equipment, it is very important to reduce the time required for insertion and clamping of the wire. The time factor is especially evident in the mass production of electrical appliances.

It is also known a contact clamping device containing contact elements installed in a hollow Insulating housing, interacting with them a clamping device and a device for fixing the clamped position of the wire [W ^

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758325

The disadvantage of this device is "insufficient labor productivity and limited functional capabilities.

The purpose of the invention is to increase productivity while expanding functionality.

This goal is achieved by the fact that the clamping device is made in the form of an insulating cup installed with the possibility of movement relative to it with guides in which a conductive rod is mounted, the contact elements are made with supporting projections and are installed with the possibility of rotation. The pulled conductive rod facing the wire of their surface is made of ribbed, the fixation device is made in the form of an elastic conductive bracket, the shelves of which are made with through pairs whose longitudinal axes are parallel to the transverse axis of the body, and the supporting lugs of the contact elements interact with the fixings of the fixings , the ends of the conductive rod protrude beyond the guides and are mounted so as to move in the slots of the housing.

FIG. 1 shows schematically a contact terminal in the open state; FIG. 2 - the same, with the wire clamped in it; in fig. 3 shows section A-A in FIG. one.

In the hollow insulating housing 1 with a nut 2 'and a bolt 3, a fixture 4 is fixed for fixing contact elements 5, which are mounted for rotation on a conductive rod 6, which is fixed in a' pressure fixture 7, and its protruding ends are mounted for movement in a groove 8 cases · 1. The clamping device 7 is made in the form of an insulating sleeve articulated with the housing 1 and mounted for movement relative to it with guides you. stupas in which the conductive rod is installed 6. Contact

. · The elements are made with supporting protrusions 9. And are mounted for rotation on the conductive rod 6, and their surfaces facing the wire are made of ribbed ones. The fixing device 4 is made in the form of an elastic conductive bracket, the shelves of which are made with through slots 10, the longitudinal axes of which are parallel to the transverse axis of the body, and the supporting lugs 9 of the contact elements interact with the recesses of the fixation device.

The maximum distance between the supporting protrusions 9 exceeds the length of the base of the elastic conductive bracket 4 in its free state.

'- The work of the clamp is as follows.

The bare end of the wire through the tapered hole of the clamping device 7 is inserted into the hole between the contact elements 5. Reverse to the clamping device 7, the rod 6 begins to move in the groove 8, which leads to the clamping of the wire contact elements. To disconnect the wire, it is enough to pull the clamping device 7 out of the body.

The proposed device, despite its ease of connection and disconnection, provides a fast and exceptionally reliable wire clamp with many ⁴ wires and a thin core wire.

Claims (1)

Claim 25 A contact clamp containing contact elements installed in a hollow insulating housing, pressure devices interacting with them and a device for fixing the clamped wire position, characterized in that, in order to increase labor productivity in expanding the functionality, the pressure device is made in the direction jointed body and installed insulative glass, which can be moved relative to it, with guides in which a current conductor is installed. the driving rod, the contact elements are made with supporting protrusions and mounted for rotation on the said conductive rod facing the wire of their surface made ribbed, the device 45 for fixing is made in the form of an elastic conductive bracket, the shelves of which are made with through slots, the longitudinal axes of which are parallel to the transverse axis of the housing, with the supporting lugs of the contact elements interacting with the recesses of the fixation device, the ends of the conductive rod protruding from the guide protrusions and installed with the air. Can move in the slots of the housing.