RU115121U1 - ELECTRIC SWITCH - Google Patents

Abstract

1. An electrical switch containing a mounting base, mounted on a mounting base on insulators, two parallel rows of contact racks placed opposite each other, each of which contains a fastening element, a contact plate and a terminal for fixing external conductors, as well as a row of axial racks, each of which contains a terminal for securing external conductors, a fastening element; a knife, pivotally connected to the axle post attachment element and a lever drive, and located with the possibility of contact with the contact plates of the corresponding contact posts, characterized in that each contact post is made of one sheet piece by bending the attachment element at a right angle, leads for fixing external conductors contact posts and an axial post located between them are located in different planes, while the fastening element of each of the posts contains a hole in the lower part and positioning protrusions for fixing on the insulator, and the corresponding mounting grooves are made on the insulators. ! 2. The electrical switch according to claim 1, characterized in that each axial post is made in the form of a shaped part, on one of the vertical edges of which a knife is fixed, and the other is a terminal for fixing external conductors, made protruding into the inter-row space. ! 3. An electrical switch according to claim 1, characterized in that each contact post is made in the form of an L-shaped part, the vertical part of which contains a contact plane and a terminal for fixing external conductors, and d

Description

The invention relates to the field of electrical engineering, in particular to electric switches with a control element in the form of a rotating element, driven directly by a solid body, for example by hand, namely, three-pole switches with a manual drive.

A known electrical switch containing a mounting base on which contact racks are mounted on insulators to accommodate fixed contact plates and a drive connected to movable contacts and providing their angular movement relative to the fixed contacts for on / off (see RF patent for utility model No. 101265, IPC H01H 21/54).

The disadvantage of this device is the material consumption and design complexity.

Closest to the claimed device is an electric switch containing a mounting base, mounted on a mounting base on insulators, two parallel rows of contact racks installed opposite each other, each of which contains a mounting element, a contact plate and an output for securing external conductors, as well as located between contact racks a number of axial racks, each of which contains an output for securing external conductors, a fastening element and a knife pivotally connected to the element mounting bracket for the axial strut and lever drive, and located with the possibility of contacting with the contact plates of the corresponding contact racks (manufactured in series by the Saratov Electromechanical Plant Elektrodetal according to TU 3424-002-01395420-01).

However, the above-described material-intensive switch, fastening elements and the terminals of its contact and axial struts are separate parts made of different materials and interconnected by rivets, which complicates the design and increases the height of the device. The findings for fixing the external conductors of the contact and axial racks are located in the same vertical plane, which complicates the installation of external conductors. In addition, the planes of insulators combined with the mounting of the switch and the fastening elements of the axial and contact racks are made without positioning installation elements, which complicates the installation and reduces the reliability of their connection.

The objective is to create an electric switch having a simple design and improved mounting characteristics.

The technical result consists in simplifying the design, reducing the complexity and increasing ease of installation, as well as reducing the height of the product.

The specified technical result is achieved by the fact that the electrical switch contains a mounting base on which two parallel rows of contact racks located opposite each other are installed on the insulators, each of which contains a fastening element, a contact plate and an output for securing external conductors, as well as located between the contact racks a number of axial struts, each of which contains an output for securing external conductors, an attachment element; a knife pivotally connected with an axial strut fastening element and a lever drive, and arranged to contact corresponding contact racks with contact plates, according to the solution, each contact strut is made of one sheet part by bending the fastening element at right angles, conclusions for fixing the external contact conductors racks and the corresponding axial racks are located in different planes, while the mounting element of each of the racks contains a hole in the lower part and positioning stupas for fixing on the insulator, and the corresponding installation grooves are made on the insulators. Each axial strut is made in the form of a p-shaped part, on one of the vertical faces of which a knife is fixed, and the other is an output for securing external conductors made protruding into the inter-row space. Each contact pole is made in the form of an L-shaped part, the vertical part of which contains a contact plane and an output for fixing external conductors, and the horizontal is an attachment element.

The essence of the claimed device is illustrated by drawings, where figure 1 shows a General view of the inventive electric switch; figure 2 is a drawing of the contact rack; figure 3 is a drawing of an axial strut.

The positions in the drawings indicate:

1 - mounting base;

2 - insulator;

3 - contact rack;

4 - contact plate;

5 - pin contact pin for securing the outer conductor;

6 - fastening element of the contact rack;

7 - hole pin contact for the outer conductor;

8 - hole contact pin for fixing on the insulator;

9 - positioning protrusion of the contact rack;

10 - axial rack;

11 - output axial rack for fixing the outer conductor;

12 - an element of fastening of an axial rack;

13 - hole axial rack for the outer conductor;

14 - hole axial rack for fixing on the insulator;

15 - positioning protrusion of the axle strut;

16 - hole for securing the knife;

17 - a knife;

18 - lever drive;

19 - groove on the insulator.

The electric switch contains a mounting base 1 (Fig. 1), made, for example, in the form of a steel plate on which three plastic insulators 2 are mounted parallel to each other with mounting recesses in the form of grooves 19. On the extreme insulators 2 are opposite each other two rows of contact racks 3 (1, 2), containing contact plates 4 with leads 5 for securing external conductors, for example, electrical wires (not shown in Fig.), located in the upper part of the racks 3, and fastening elements 6 located in the lower h part of the contact racks 3. In this case, each contact rack 3 is made in the form of a single part, for example, of a flat copper l-shaped plate bent at right angles in the form of an l-shaped part, the vertical part of which contains a terminal 5 for fixing external conductors, made in the form of a flat plate with an opening 7 for external conductors (for example, electrical wires), and the horizontal part is a fastening element 6 and contains positioning protrusions 9 (figure 2) corresponding to the grooves 19 (figure 1) on the insulators 2, and the hole 8 (FIG. 2) for fixing on the insulator 2 (figure 1), for example, by means of a screw with a nut. On the middle insulator 2 opposite the contact struts 3 there is a row of axial struts 10 (Figs. 1, 3) with their leads 11 for securing the external conductors, fasteners 12 to the insulator 2 (Fig. 1) and articulated knives 17. Each strut 10 ( 1, 3) is made, for example, in the form of a p-shaped part made of a flat copper l-shaped plate, the ends of which are bent at a right angle so that the fastening element 12 of the axial strut 10 is located in its lower part and is made, for example , in the form of a hole 14 (figure 3) on a horizontal edge for fixing on the insulator 2 (Fig. 1) and the positioning protrusions 15 (Fig. 3) corresponding to the mounting recesses in the form of grooves 19 (Fig. 1) on the insulators 2, on the smaller of the vertical faces of the plate in the hole 16 (Fig. 3), a knife is pivotally fixed 17 (FIG. 1), and the other protrudes into the inter-row space and is a terminal 11 (FIGS. 1, 3) for fixing the external conductors, for example, fixing them in the hole 13. Each knife 17 (FIG. 1) is made, for example, of two copper v-shaped plates pivotally mounted on an axial strut 10 on both sides of the vertical face in the hole 16 do not open with screw connection and ring springs connected at the ends. All knives 17 are connected with a lever drive 18, which can be used as a central or side mechanical drive with manual control. In this case, in the assembled device, the terminals 5 (FIGS. 1, 2) of the contact struts 3 for fixing the external conductors are located in the same plane with the knives 17 (FIG. 1) and in different planes with the leads 11 (FIGS. 1, 3) for fixing the external conductors on axle posts 10.

The electric switch has three switching positions, which are determined by the position of the lever actuator 18, while in the middle position of the blades 17 the circuit is open. For operation, the electric switch is installed in the power cabinet, and in the neutral position, when the circuits are open, the external conductors connected to the power source and the load are connected to the corresponding terminals 5 of the contact posts 3 and to the terminals 11 of the axial posts 10 to fix the external conductors according to the electric circuit, determined by the customer. Then, by moving the lever actuator 18 to the right / left, the knives 17 are closed on one of the rows (respectively, right / left) of the contact racks 5, providing switching of the electric circuit and supplying voltage from the power source to the load.

Claims (3)

1. An electric switch comprising a mounting base, two parallel rows of contact racks mounted opposite each other mounted on a mounting base on insulators, each of which contains a fastening element, a contact plate and an output for securing external conductors, as well as a series of axial racks, each of which contains an output for securing external conductors, an attachment element; a knife pivotally connected with an axial strut fastening element and a lever actuator, and arranged to contact respective contact racks with contact plates, characterized in that each contact strut is made of one sheet part by bending the fastening element at right angles, conclusions for fixing external conductors contact racks and axial racks located between them are located in different planes, while the fastening element of each of the racks contains a hole in the lower part and position the projecting protrusions for fixing on the insulator, and the corresponding mounting grooves are made on the insulators. 2. The electric switch according to claim 1, characterized in that each axial strut is made in the form of a figurative part, on one of the vertical faces of which a knife is fixed, and the other is an output for fixing external conductors made protruding into the inter-row space. 3. The electric switch according to claim 1, characterized in that each contact stand is made in the form of an L-shaped part, the vertical part of which contains a contact plane and an output for fixing external conductors, and the horizontal is an attachment element.