RU1781750C - Electric terminal - Google Patents

Abstract

Use: to connect the power cord to household appliances. SUMMARY OF THE INVENTION: the cord fixation element is integral with the insulating base and connected to it by flexible jumpers, the base fixation elements in the device body are made in the form of grooves, the knife contact shanks are made in the form of a bracket, and the clamping screws are provided with spring washers. 3 ill.

Description

The invention relates to the field of electrical engineering, namely, to connect an electrical power cord to household appliances.

An electrical clamp adopted for the prototype is known. The electric clamp is made in the form of a plastic case, one end of which has the shape of a ring located adjacent to the ring-shaped element, on the opposite sides of which cogs are made cantilever, with the help of which the clamp is attached to the panel of the device. At the same end there is a cord clamping element integral with the body. The cord clamping element has the shape of a bracket connected to the housing by a flat jumper. At the other end of the clamp housing there is a flat shank, on both sides of which small grooves are made for making knife contacts. The fastening of the contacts to the clamp is carried out by protrusions on the walls of the grooves that enter the rectangular holes of the contacts. In the same way, on the other side of the clamp, the ground contact is fixed.

The disadvantages of this design are: an unreliable jumper connecting the housing to the cord clamp member; clamping electrical wires to the contacts is made by screw heads, which can lead to self-unwinding of the latter during operation; complex casting is necessary for casting the body.

The aim of the invention is to increase the reliability of the clamp, simplify the design, increase manufacturability.

This goal is achieved in that in an electric clamp for securing the cord and attaching it to the household appliance, which is a plastic molded case, a cord fixing element integrally formed with the case, and knife contacts; one end of the case is made in the form of a disk with an opening, near the disk on the case there are grooves for fastening the clamp in the device, on the other end of the clamp case there is a cord fixing element connected to the case by flexible jumpers, the knife contact shanks are bent parallel to their planes and provided with holes under the screws. Between the screw heads and the bent shanks of the contacts, spring washers are placed.

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Fig. 1 shows the structure of the clamp, a side view, assembled with the cord: Fig. 2 shows the structure of the clamp body, with the latching element folded down; Fig. 3 is a design of knife contacts.

The electric clamp is a plastic molded base, a cord and knife contact fixing element 2, made integrally with the body and connected to it using flexible jumpers 3. jHa base 1 and fixing element 2 have threaded holes 4 and 5 for securing the cord to the base. Part of the base, opposite to the fixing element 2, is made in the form of a disk 6 with an opening for introducing a cord; behind the plane of the disk, grooves 7 are made on both sides of the body for fastening the clamp assembled with the cord in the body of the electric device. To press the cord leads to the knife contacts 8, the shanks 9 of the latter are bent parallel to the plane of the contacts and provided with holes for screws 10. In order to avoid self-loosening of the screws, spring washers are placed between the screw head and the bent contact shank.

The fastening of the cord to the device is as follows.

The cord is passed through the hole of the disk 6, the power conductors and the earth core are separated, the power conductors are connected with the knife contacts and installed on the base. The earth core is attached to the base with screws. Then they bend around the base in the area of flexible jumpers 3, press the contacts with the power cores and fasten them into the cord with screws through holes 4 and 5.

The clamp with the help of the slots 7 is mounted in the hole of the device body.

The proposed design of the clamp has, in comparison with the prototype, a number of advantages:

- the cord and the blade contacts are firmly fixed; repeated assembly and disassembly does not affect the reliability of fastening;

- thanks to the presence of spring washers, self-loosening of screws is excluded,

- the plastic basis is simple and technologically advanced in manufacture.

Claims (1)

SUMMARY OF THE INVENTION An electric clamp comprising an insulating base with a disk-shaped flange and base fixing elements in the device body located behind the flange, a cord fixing element integrally formed with the base, and knife contacts, in the shanks of which are made holes for clamping screws, characterized in that, in order to simplify the design and increase reliability by eliminating the possibility of tearing off the cord fixing element and self-loosening of the clamping screws, the base fixing elements in the housing The burs are made in the form of grooves, the cord fixing element is located on the opposite end of the base and connected to the base by flexible jumpers, the blade ends of the knife contacts are made in the form of a bracket, the holes for the clamping screws are made in the opposite ends of the bracket, and the clamping screws are equipped with elastic washers. Figure 2. Editor Compiled by A. Konovalov Tehred M. Morgenthal Proofreader S.Jusco