SU1361647A2 - Limit switch - Google Patents

Abstract

The invention relates to electrical engineering and is intended for switching electric control circuits under the influence of movable control stops. The goal is to expand the functionality. In the limit switch on the drive shaft 2 an elongated driver 4 is installed, having a longitudinal groove 5. On the driven shaft 7, a bracket 6 is fixed, the free end of which is passed into the groove 5. When the lever 3 is deflected, the force through the driver 15 and the spring 16 is transmitted to the driver 4. When .this leash 4 rotates the driven shaft by means of the clamp 6, the closure is one of the fixed contacts, 3 silt .. fr (L N) ft / e. 3

Description

The invention relates to electrical engineering, in particular, to limit switches intended for switching electric control circuits under the influence of movable control stops, and is an improvement of the invention according to author. No. 907611.

The purpose of the invention is to enhance the functionality.

FIG. the limit switch is shown with the cover removed; 2, the same with the base removed; figure 3 is the same longitudinal section.

The switch consists of a housing 1, in which the drive shaft 2 is installed with a lever 3 with a roller. An elongated arm 4 is installed on the drive shaft, on the lower end of which there is a longitudinal groove 5 into which the transverse element of the bracket 6 is rigidly mounted on the driven shaft 7. At the same time, with a slight turn of the driver 4, the angle of the contact arm 8 is rotated through the transverse element of the bracket 6. In the windows of the lever 8, there are movable spring-loaded contacts 9, fixed contacts 10 are connected to screw terminals 1 for connecting wires.

To change the triggering program, there is a stop 12 mounted on the sleeve rotatably and fixed in the adjusted position by a fixing screw 13, passed through the housing slot and the threaded hole of the stop 12., at which the ends of the working return shaft 14 are attached. At the same time, the free end is covered a driver 15 rigidly connected to the shaft 2. An additional spring 16 is mounted on the drive shaft, the ends of which cover the driver 15 and the protruding element 17 of the driver 4.

To activate the switch when the lever 3 is tilted clockwise or counterclockwise with the contacts in neutral position (contacts open), the screw 13 (Fig. 1) is installed and tightened in the slot in the middle position. In this case, the stop 12j the contact lever 8 and the drivers 15 and 4 are located on the longitudinal axis of the switches.

To operate the switch when the lever 3 is turned clockwise (Fig. 1), the screw 13 is tightened in the slot in the rightmost position. Wherein

the stop 12 is offset from the longitudinal axis of the switch to the left (figure 2). The leash 4 by means of the staple 6 and the additional spring I6 fixes the right moving contact 9 (FIG. 1) in the initial position for this program.

To trigger the switch when

0 lever deflection versus time

the arrows loosen the screw 13 and by turning the lever 3 clockwise, move the screw to the leftmost position and tighten it. This leash 4

5 through staples 6 and a working spring. 14 switches and fixes the movable contacts 9 in another initial position for the rebuilt cryptogram. The switch works as follows.

When the lever 3 is tilted clockwise or counterclockwise (for a program with a neutral position of the contacts), the force of the driver 15 through the ends

5, an additional spring 16 is transmitted to the driver 4 (FIG. 3). In this case, the lead 4 by means of the clamp 6 turns the driven shaft through a certain angle, the closure of one of the fixed contacts.

The rotation restriction of the driver 4 is provided by its abutment against the wall of the housing. Due to the additional spring 16, the ends of which cover the leads 15 and 4, the lever can be additionally moved when the force is applied to it after switching contacts and the breaker is prevented from breaking. In this case, one of the ends of the additional spring 16 is held by the protrusion 17 of the driver 4, and the other end is cocked by a lead rigidly mounted on the shaft 15. Limit of rotation

On the driver 15, the length of the window of the driver 4 is determined (FIG. 2).

The return of the lever 3 and the contact system to its original position occurs after the force is removed from the lever under the influence of the operating spring 14.

A switch with a redesigned triggering program when the lever is tilted only clockwise. Arrow or counterclockwise only works in the same way.

Off The switch extends the functionality of its use with trigger programs when the lever is tilted in both directions, including

five

0

with a neutral position of the contacts in the initial position.

The scope of the proposed switch is also expanded by increasing the range of speeds acting on the rectifier stops on the switch in the direction of decreasing them due to the obtained lever mechanism, consisting of an elongated leash and bracket.

It is also possible to obtain switches with different combinations of contacts: two closing contacts with a neutral position, one closing minus one opening with the lever tilted clockwise, one closing and one opening with the lever tilted counterclockwise.

For rmula izob

rete n i

Limit switch according to No. 907611, distinguished

auth. 1 s

so that, in order to extend the functionality, the leash is made with a groove and protrudes behind the driven shaft, and the bracket is inserted into the specified groove of the leash with the possibility of hinge movement.

Y / y /

Compiled by N.Petrakova Editor N.Lazarenko Tehred M.Morgental Corrector V.But ha

Order 6298/53 Circulation 697 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Schlg.

Claims (1)

Claim Limit switch for auto 10 No. 907611, due to the fact that, in order to expand the functionality, the leash is made with a groove and protrudes beyond the driven shaft, and the bracket is inserted into the specified groove 15 leash with the possibility of articulated movement. Figure 1