SU1504680A1 - Sealed microswitch - Google Patents

Abstract

The invention relates to electrical engineering and can be used in various devices. The purpose of the invention is to increase reliability by eliminating a short circuit between the inner lever and the movable spring contact and processability. The device comprises a housing 1, a movable spring contact 2 moving in response to the action of a driving element consisting of an internal lever 3 and an external metal lever 4 interconnected. On the internal lever 3 there is a base surface in the form of two semirings that accurately fix the cylindrical a tubular pusher 5 with respect to the lever 3. On the lever 3 in the area of the base surface, by means of, for example, contact welding, a U-shaped plate spring element 6 is attached. At its ends there are tapered ledges s 7 which are within the plunger aperture 5, thereby automatically clamping it to the surface of the lever 3. 1 ZP f-ly, 3 ill.

Description

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This invention relates to electrical engineering, in particular switching devices.

The purpose of the invention is to increase reliability by eliminating short circuits between the inner lever and the movable spring contact and processability.

Figure 1 shows a sealed microswitch, a slit; Fig. 2 shows an element of the inner lever; Fig. 3 is the same.

The sealed microswitch has a housing 1, a movable spring contact 2, moving in response to the action of a drive element consisting of the inner 3 and outer A metal levers interconnected by one end. On the inner arm 3 there is a base surface in the form of two half-rings, which precisely fix the insulating cylindrical pusher 5 relative to the arm 3. The pusher 5 can be made pipes. On the lever 3 in the area of the base surface by means of, for example, resistance welding, the U-image of the new plate spring element 6 is attached, on its ends there are conical protrusions 7, which enter the hole 8 of the pusher 5, thereby automatically pressing it to the surface

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Step 6 is moved apart and then re-compressed at the moment when the tips of the cones 7 turn out against the inner holes 8 of the pusher 5. Compression occurs until the outer surface of the pusher 5 rests against the base surface of the lever 3, fixing the position of the pusher exactly.

Sealed microswitch works as follows.

When a force is applied to the outer lever 4, the inner lever 3 pusher 5 presses pin 2, as a result of which some contacts open and others close. When the force is removed from the outer lever 4, all elements return to their original position.

Thus, the same outer surface of the tubular pusher participates in the transfer of movement from pin 3 to pin 2, which allows the microswitch to operate correctly.

As a result of the fact that the fastening elements 3 and 6 of the insulating tubular pusher 5 are brought out beyond the limits of the contact spring 2, the possibility of closing it to the housing, Tob. ensured reliability

This device cone

these levers 3. This technique makes 35 projections themselves help to search for directions by selecting the angle of the cone when

the top, it is chosen 60–90, as a result of which the elastic forces of the spring element 6 act along

The pusher axes push the pusher 40 upwards along the generatrix of the body and thereby automatically go up to the surface of the lever. To connect to an external device

A lazy landing pusher and then automatically put it in place, thus ensuring the manufacturability of the assembly.

Claims (1)

Invention Formula 1, A sealed microswitch, comprising a housing, open connectors 9, connected to a non-45-pin, movable spring contact, Vision contacts 10.drive element consisting of The structure is assembled by the following inner and outer metal levers, which are rigidly connected U-shaped plate spring-loaded FRIEND with the other one ends, and the iso-element is welded in advance to the internal cylindrical pusher, Renew lever 3 on a special auto-mounted on the inner lever With the ability to interact with the rod. In the final assembly of the micro - switch, the pusher 5 is enough to enter into the element 6 before contacting 55 with the tapered protrusions 7. The outer retaining element, which is connected to the inner lever, is characterized in that, in order to increase reliability by eliminating short zamzhani between internal; lever and movable spring contact, and manufacturability, springs, the surface of the pusher 5 during long-term movement, slipping along the tapered surface of the protrusions 7, causes ele- le: the projections themselves help to search for A lazy landing pusher and then automatically put it in place, thus ensuring the manufacturability of the assembly. Invention Formula 1, A sealed microswitch comprising a housing not connected with a conical element that is connected to an inner lever, characterized in that, in order to increase reliability by eliminating a short wedge between the inner ;. a lever and a movable spring contact, and manufacturability, the spring element is made in the form of a U-shaped plate, at both ends of which there are conical protrusions facing vertices towards each other, and at both ends of the cylindrical pusher there are holes in which the specified the conical protrusions of the spring element, which is rigidly fixed to X x x x x x x; XyXyj eight an inner arm, the diameter of the base of the conical protrusions being larger than the diameter of the holes of the cylindrical pusher. 2, Microswitch in accordance with claim 1, which is characterized by the fact that the cylindrical pusher is tubular and its length is greater than the width of the movable spring contact. Figg Xy (/ e.J