DE563655C - Arrangement for adjusting an adjusting motor, in particular for adjusting a light band large instrument, by means of a measuring device - Google Patents

Description

The main patent relates to an arrangement for controlling electrical power by a measuring device, in which a contact device arranged separately from the measuring device pointer through a drop bar is actuated if the pointer of the measuring device allows it. There is one only pointer position provided in which the pointer indicates the actuation of the contact device, through which an adjusting motor is controlled, prevented. As a result, it is necessary by suitable compensation means the pointer of the measuring instrument after each actuation the contact device through the drop bracket in the mentioned special position (zero position) traced back.

The invention relates to a development of the device according to the main patent, in which a return of the pointer to a zero position does not take place and thus any stress of the measuring device is prevented. According to the invention here is from the drop bracket actuated electrical contact device in a manner known per se by an expedient in the extension of the measuring device axis arranged axis rotatably mounted and this last said axis by the adjusting motor upon actuation of the contact device in such a way rotated that without influencing the pointer this immediately or after a certain time again assumes such a position with respect to the contact device that it is actuated the contact device prevented by the drop bracket. The adjustment of the contact device is known in facilities that work without drop bars, that is, in which the contacts are closed directly by the pointer will. The mating contacts are useful compared to those directly on the contact carrier seated contacts on two parallel to the contact carrier arranged side by side with a gap and against the Contact carrier sprung plates attached. The drop bracket actuates while mediating of the pointer of the measuring device the contacts on the plate over which it is playing.

In contrast to the main patent, the new facility works according to the knockout method and has the particular advantage that the setting of Large display or from writing organs

"') JOn ecm Palen / siielier has been given as the inventor:

LHpL-Ing. Ma.i'-Ulrich booking in Baiin-Kladm

568655

if necessary at the same time with electrical sensors, such as control resistors and current pulse generators, can be done without additional tools. An exemplary embodiment is shown in the drawing of the invention shown. Fig. Ι shows essentially a front view and Fig. 2 a top view.

The pointer α of a measuring device b plays over two plates C ₁ and C ₂ , which are attached to a disk e with the interposition of compression springs d _x and d _z. On the underside of the plates C ₁ and c ₂ , contacts f _x and f _{2 are} attached, the mating _{contacts g x} and g ₂ of which are attached to the disk e. The motor h is switched on for clockwise or counter-clockwise rotation in a manner to be discussed via the contacts f 1, gj and f ", go. The motor adjusts the disk e via the drive i on the one hand and the cover strip I via the drive k , which releases a more or less long strip of light m. A scale η is attached along the light strip. The illumination of the cutout released by the cover tape / and expediently also the scale is advantageously carried out by one or more constantly burning lamps.

Above the path of the pointer α , a drop bracket 0 is arranged, which is moved, for example mechanically, by an electromagnet p. In the connecting lines q between the electromagnet p and the network r there is provided a contact s which is closed in certain periods of time (not shown), so that the electromagnet p is periodically excited and displaces the drop bracket 0 in the process. The contact s can for example be closed by a clockwork. The lower side of the drop bracket 0 is expediently roughened so that the pointer α is prevented from sliding away. The device works as follows:

If the pointer α is in the position illustrated in Fig. 1, it will be pressed down when the drop bracket 0 goes down without making contact at f _lt ^ ₁ or f ₃ , g _& , since the pointer is in the gap between the disks C ₁ and c ₂ is located. If the pointer α deflects after being released by the drop bracket 0 , ζ. Β. to the left, when the drop bracket 0 goes down, it stands above the plate C ₁ (see Fig. 2). With the help of the pointer, plate C ₁ is then pressed down by the drop bracket, so that a contact closure takes place at f _v g _x and thus the motor h is switched on. As a result, the motor firstly adjusts the cover band I via the drive k and secondly the disk e via the drive i. The adjustment of the disk e has the consequence that the plate C ₂ can be rotated in the sense of the pointer deflection, so that the pointer α again enters the gap between the disks C ₁ and c _a . At this moment, the shared by the cover strip of light I shows in the deflection of the pointer corresponding α value on the scale of η. The opening of the contact / \, ^ ₁ takes place through the action of the springs d _v after the drop bracket 0 has gone up again.

The processes take place accordingly when the pointer α plays over the disk c ₂ . In this case, the motor h is switched on by means of the contacts / ″ ₂ , g ₂ in the opposite sense as before, until the light strip released by the cover tape again has a length corresponding to the pointer deflection.

The circuit is expediently carried out in such a way that the motor always runs until the disk e has reached a position such that the pointer α is again between the plates C ₁ and c ₂ . This can be achieved in that the timer which actuates the contact s is set in such a way that the drop bracket 0 remains depressed as long as is necessary to move the light strip over the full scale. Depending on the particular operating state, shorter or longer contact times can also be set if desired.

It goes without saying that, if desired, other switching means can also be connected to the device described. For example, a variable resistor for remote transmission of the display of pointer a or a transmitter for remote current pulse transmission can be connected to drive k in a manner known per se. The disk e can, if desired, be mechanically connected to an ink pen so that the position of the pointer α is registered at the same time.

Claims (1)

Patent claims: i. Arrangement for adjusting an adjusting motor, in particular for adjusting a large light band instrument, by means of a measuring device using one or more electrical contact devices completely separated from the pointer of the measuring device to control the adjusting motor, which is actuated by a drop bracket if the measuring device pointer allows this (according to Patent 454 870), characterized in that the electrical contact device actuated by the drop bracket is rotatably mounted in a known manner about an axis expediently arranged in the extension of the measuring device axis and is rotated by the adjusting motor when the electrical contact device is actuated.
2. Device according to claim 1, in which the contacts and mating contacts are arranged on a disc-shaped contact carrier which can be adjusted by the motor in the sense of the pointer deflection, characterized in that the mating contacts (f \, f ₂ ) opposite the contacts sitting directly on the contact carrier (disc e) {g _lt g ₂ ) _{two plates (C 1} , C ₂ ) arranged parallel to the contact carrier next to one another with a gap between them and spring-loaded against the contact carrier, over which the pointer (a) plays. For this purpose ι sheet of drawings