DD217077A1 - CONTROL KNOB FOR ADJUSTING THE RESPONSE VALUE OF TRIGGERERS - Google Patents

Abstract

THE INVENTION CONCERNS A CONTROL KNOB FOR ADJUSTING THE RESPONSE VALUE, PREFERABLY FOR THE CONTINUOUS ADJUSTMENT OF THERMAL OVERSTROM OUTLETS IN MOTOR PROTECTION AND POWER SWITCHES. OBJECT OF THE INVENTION IS TO SIMPLIFY THE MANUFACTURE AND ASSEMBLY OF SUCH A KNOB WHERE SMALL DIMENSIONS SHOULD BE REALIZED AND THE ASSEMBLY OF THE KNOCK KNOB AFTER MOUNTING THE SWITCH TO BE POSSIBLE. According to the invention, in a manner known to the Applicant, the actuator is provided with a concurrent slotted and two apertures connected with the slit, and with a collared scaffold on the supporting structure, such that an aerospace form springs on its surface SLOTTED SLOTS AND WITH THE LATCHES OPENING THE OPENING AND WITH THE ABEXPLINED END OF THE LEGS UNDER THE SUPPORTING COMPONENT REMOVED.

Description

Inventor:. Berlin, May 25, 1983

Gerhard AIf / _p

Harry Walter. - ^kr

ZustellungsbevollnL. :

Institute of Control Engineering in the Combine

TEB SAW Berlin-Treptow "Friedrich Ebert"

1055 Berlin, Storkower-3tr. 101

- Office for Property Rights -

Adjustment knob for setting the trigger value of triggers

H 01 H. 71 / 74-

 Field of application of the invention

The invention relates to a setting knob for setting the response value of triggers, preferably for the continuous adjustment of thermal triggers in motor protection and Leistungsschaltarn.

Characteristic of the known technical solutions

Adjustment knobs for the setting of the trigger value are rotatably mounted in the housing of the release or the switching device or in special receptacle assemblies. Control knobs have two puncture planes: an outer one with a handling device and an inner one with a handle

Coupling link which engages with the adjusting member of the trigger. Adjustment knob θ. For a stepless adjustment, a heating force is applied which prevents unwanted twisting.

There are Stellloiöpfe known in which a part of the shaft is made conical and by means of ^: a compression spring

-L- η

be bridged against a likewise conical Lagerflache.des housing (DD-W? 35 3 * 1.8? DD-WP 139 '493). Here, the adjustment takes place either on the knob protruding from the housing or by means of a screwdriver, wherein the adjusting knob has a corresponding slot. , ,

Furthermore knobs are known, in which the cylindrical part, which is guided in a bearing, has a circulating hat, which ^! to secure the position of parts of two Gehäusewulste or is surrounded by a circlip and 'which is the securing of the Sinstellage of the button by a resilient disc «

These. Solutions have the disadvantage that the adjusting knob has a greater axial extent, which extends beyond the radio _: tion area and is required for receiving the resilient elements.

Ss are still Einöllvorrichtungen known (DS-AS 25 05 181, DE-AS 25 05 182), in which the adjusting knob is assembled from two parts by snap connection. To secure the Btellknopfes against unwanted twisting is provided according to DS-AS 25 05 182 between a part of the control knob and the bearing a spring washer, while in the _: device according to DE-AS 25 05, 181 das'innere part of the Ste 11 button a resilient latching arm is executed, which engages in corresponding .Raststufen of the bearing part.

The disadvantage of these embodiments is that two plastic parts are needed to form the adjusting knob, which must also be joined together so that the Terdrehwinkel on the outer adjustment without slip auf'das. is transmitted inside.

With regard to the accuracy of the plastic parts, this results in increased technological requirements. V

'parts of these statements are that according to DS-AS 25 05 181 a continuous adjustment is not possible and

 in that according to DE-AS 25 05 182 a spring washer is additionally required, so that three parts are required for the functional unit "adjusting knob". ,

Object of the invention. ·

The aim of the invention is a stable button, which is rotatably guided in a bearing bore, so too. make that it consists only of a simple plastic part, which is held axially by means of a resilient member and at the same time secured against undesired adjustment. The Sinsatzen, the Stellknopfas should be done after installation of the trigger by 'plugging' in the bearing bore.The anti-rotation and axial support should require no additional space, which is necessary especially for switches of small Nennstromstärka and small volume.

Explanation of the essence of the invention

The invention is based on the Aufgeäbe, the adjusting knob in such a way that the necessary for storage approach nicnt protrudes beyond the required bearing length of the bracket and is sinsetzbar after installation of the switch.

Erfindungsgamäß this is achieved in that the adjusting knob, a known per se with tig running slot and two related to the slot approximately rectangular openings and a supported on the supporting member collar that an M-shaped wire form spring with its curvature supported on the sole of the slot and passes through the openings with the legs and is supported with the angled ends of the legs below the supporting component. , .

In a further development of the invention dia recess is the supporting component with an internal toothing, provided, into which engage the angled ends of the legs of the wire form spring. ,. , , "

embodiment

Reference to an 'embodiment, the invention is explained. Slide related drawings' zaigant

   .ν., ... · ·. - 4 -.

Pig * 1: the control knob rait wire formfader In section Pig. 2 :. an embodiment of the camp training as Hastgesperra. '\' ·. ''

Dar adjusting knob. 1 has a slot 2 and openings 3. The Viölbung S. the wire form spring 4 is located on the sole of the slot 2, and the legs 3 engage through the openings 3 of the adjusting knob 1. The adjusting knob 1 is easily rotatably inserted into a recess 6, the supporting member 10, wherein the collar 12 supports the load-bearing component 10. The legs 5 of the wire-forming spring 4 press laterally against the cylindrical recess 6 of the supporting, component 10 and, generate the required frictional force against an arbitrary rotation. The Angewinkeltan ends 7 of the legs 5 of the wire-forming spring 4- are based on the-inner surface of the supporting member 10 under the resilient action of the curvature S of the form faders. In this way wer.den existing SinbautoIeranzeη compensated and ensures axial securitization of the control knob 1. If the adjusting knob is fixed in its position, the driver 11 of the adjusting knob 1 engages in the release shaft, not shown. ,

In an embodiment according to FIG. 2, the recess 6 is provided with an inner toothing 9 into which the legs 5 of the wire form spring 4 engage in a latching manner. In this way one latching the set action levels is possible. ·, '

Claims (2)

- 5 - Claim. , 1. Setting knob for setting the response value of triggers, preferably of thermal overcurrent releases. Motor protection and power scarf tern, the e; Lnen slot for receiving a screwdriver for adjustment, characterized in that the adjusting knob (I) 'in a conventional manner a centrally extending slot (2) · and two sit the slot in connection standing, approximately rectangular openings (3) and on the supporting member (10) supporting collar (12), that an M-shaped wire form spring (4) is supported with its curvature (3) on the sole of the slot and with the Legs (5) passes through the openings (3) and with the angled sine (7) of the legs (5) is supported below the supporting element (10). 2. adjusting knob according to item 1, characterized in that the recess (5) of the supporting component (10) with an internal toothing (9) is provided, in which the legs (5) of the wire form spring. (4) engage. For this 1. Sheet 'Drawing -