RU162789U1 - SWITCH-SWITCH CONTROL SHAFT - Google Patents

Abstract

The control shaft of the switch-disconnector, connected to the handle and installed in its housing, made with at least one through hole for accommodating blocks of movable contacts, characterized in that it is made of insulating electrical material and contains the entire first section of interaction with the handle, shoulder , a section of radial fixation of the control shaft located between the flanges of the area for placing movable contacts and a second section of interaction with the handle with a slot in the end, pr and the first section of interaction with the handle is made crosswise at the end of the control shaft, and the shoulders are made cylindrical and are located on both sides of the zone of placement of the movable contacts to exclude axial movement of the entire control shaft in the housing of the switch-disconnector, while the section of radial fixation is made with recesses with the possibility of fixing the control shaft in the on / off position with the help of clamps located in the housing, and the second section of interaction with the handle is made with a slot in the end with the possibility of interaction with the plate of the handle on / off when using the handle without an intermediate sleeve, and through holes are made in the area of the moving contacts, and their shape is a rectangle.

Description

The utility model relates to electrical engineering, in particular, to low-voltage switch-disconnectors designed to turn on, pass and disconnect AC and DC current in electric energy distribution devices.

The closest analogue of the proposed switch-disconnector is a switch-disconnector (patent for utility model RU 94760, containing a multi-section insulating casing, mounting panels, pulling sections of the insulating casing by means of studs, as well as fixed contacts installed in sections of the insulating casing, interrupter chambers, a fixing mechanism and a control a shaft connected to the handle and passing through sections of the insulating body, while blocks under the through holes of the control shaft are installed under mobile contacts, consisting of two parallel contacts, spring-loaded with leaf springs.The device is switched on and off by a handle that is connected to the shaft.

The disadvantages of the known technical solutions include the following:

- the complexity of the design of movable contacts;

- the complexity of the assembly of movable contacts, which are collected directly in the control shaft of the switch-disconnector, the design of which ensures the fixation of the movable contacts at the installation site;

- the use of additional brackets in the construction of the control shaft, eliminating the longitudinal movement of the control shaft in sections of the insulating body.

The task to which this technical solution is directed is to create a control shaft design that facilitates the fixation of movable contacts in the device.

The technical result is to increase the manufacturability and maintainability of the switch-disconnector.

The solution to this problem is achieved due to the fact that the control shaft of the switch-disconnector, connected to the handle and installed in its housing, made with at least one through hole for accommodating blocks of movable contacts, is made of insulating electrical material and contains the first section of interaction with handle, collars, a section of radial fixation of the control shaft, a zone of movable contacts located between the collars and a second section of interaction with a handle with a slot in the end face, while the first interaction section with the handle is made crosswise on the end face of the control shaft, and the shoulders are cylindrical and located on both sides of the movable contact area to exclude axial movement of the entire control shaft in the switch-disconnector housing, with this section of the radial fixation is made with recesses with the possibility of fixing the control shaft in the on / off position using latches placed in the housing, and the second section interaction with the handle is made with a slot in the end with the possibility of interaction with the plate of the handle on / off when using the handle without an intermediate coupling, and through holes are made in the area of the moving contacts, and their shape is a rectangle.

The utility model is illustrated by the following illustrations:

FIG. 1 - The control shaft of the switch-disconnector (3 poles),

FIG. 2 - Movable contact of the pole of the switch-disconnector assembly,

FIG. 3 - Switch-disconnector assembly,

FIG. 4 - Control shaft with embedded movable contacts,

FIG. 5 - Cross shape of the area of interaction with the handle,

FIG. 6 - A slot in the end of the control shaft,

Where:

1. The control shaft.

2. Lead bus fixed contacts.

3. Arcing chambers.

4. Tightening studs.

5. Mobile contacts.

6. The housing of the switch-disconnector.

7. Installation locations of movable contacts.

8. The first section of interaction with the handle.

9. Fixed contacts.

10. Bead.

11. The plot of the radial locking of the control shaft.

12. Recesses for radial locking of the control shaft.

13. The end section of the housing with spring clips.

14. The area of placement of movable contacts.

15. The second section of interaction with the handle.

16. A slot in the end of the control shaft.

The control shaft 1 is an integral part of the switch-disconnector containing the housing 6, made of sections pulled together by the studs 4, and installed in a through hole made in the housing.

The control shaft 1 is made of insulating electrical material, provides movement of the movable contacts 5 around the circumference for interaction with the fixed contacts 9.

The control shaft 1 contains a completely integral first section 8 of interaction with the handle (not shown in FIG.), Shoulders 10, a section 11 of radial fixation of the control shaft located between the shoulders 10, the movable contact area 14, and the second interaction section 15 with the handle with a slot 16 in the end of the control shaft 1 for interaction with the handle (not shown in Fig.).

The first section 8 of interaction with the handle is made in a cruciform shape (Fig. 5) at the end of the control shaft 1 and is designed to interact with the handle (not shown in Fig.) When turning on / off the switch-disconnector by means of an intermediate coupling (not shown in Fig.).

The shoulders 10 are cylindrical and located on both sides of the movable contact area 14 to prevent axial movement of the entire control shaft 1 in the housing 6 pulled together by the studs 4.

Section 11 of the radial fixation of the control shaft is made with recesses 12 for fixing the control shaft in the on / off position using spring clips (not shown in Fig.) Located in the end section 13 of the housing 6 of the switch-disconnector.

The movable contact area 14 is made with at least one hole 7, the shape of which is a rectangle, to accommodate the assembled movable contact assembly 5 (FIG. 2).

The second section 15 of interaction with the handle is made with a slot 16 in the end for interaction with the plate of the on / off handle (not shown in Fig.) When using the handle without an intermediate coupling.

The design of the control shaft allows for assembly, depending on operating conditions, without additional modifications, to locate the shaft section 8 either on the right side of the switch / disconnector or on the left.

The design of the internal cavities of the sections of the housing of the switch-disconnector (not shown in Fig.) Provides the necessary alignment of the movable contact on the control shaft during its rotation, and also eliminates the axial movement of the movable contact 5 in the hole 7 of the control shaft 1.

The switch-disconnector contains the output bus 2 for connecting it to the electric network, the arcing chambers 3 are designed to quickly extinguish the electric arc when the circuit breaks at low load.

The device operates as follows: when the handle is rotated (not shown in Fig.), The movable contacts 5, located in the through holes 7 of the control shaft 1, are closed with the stationary contacts 9, ensuring the passage of electric current in the power electric circuit.

An electric circuit is broken by turning the handle in the opposite direction.

Thus, the task of creating the design of the control shaft, providing simplification of the fixation of the fixation of the movable contacts in the device while improving the manufacturability and maintainability of the switch-disconnector, is solved.

Claims (1)

The control shaft of the switch-disconnector, connected to the handle and installed in its housing, made with at least one through hole for accommodating blocks of movable contacts, characterized in that it is made of insulating electrical material and contains the entire first section of interaction with the handle, shoulder , a section of radial fixation of the control shaft located between the flanges of the area for placing movable contacts and a second section of interaction with the handle with a slot in the end, pr and the first section of interaction with the handle is made crosswise at the end of the control shaft, and the shoulders are made cylindrical and are located on both sides of the zone of placement of the movable contacts to exclude axial movement of the entire control shaft in the housing of the switch-disconnector, while the section of radial fixation is made with recesses with the possibility of fixing the control shaft in the on / off position with the help of clamps located in the housing, and the second section of interaction with the handle is made with a slot in the end with the possibility of interaction with the plate of the handle on / off when using the handle without an intermediate sleeve, and through holes are made in the area of the moving contacts, and their shape is a rectangle.

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