DE168532C

DE168532C -

Info

Publication number: DE168532C
Application number: DENDAT168532D
Authority: DE

Description

■χ.■ χ. τ\τ \ \x bei)\ x at) ^ιΡΙ^: ^ι ΡΙ ^: (η I*(η I * %% C IC I β- w^β- w ^ -I-I

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Gegenstand vorliegender Erfindung ist eine selbsttätig wirkende Umschaltvorrichtung, die dazu dient, einen Körper beim Wechseln des Drehsinnes seiner Welle von einer Lage in die andere umzuschalten. Sie besteht in der Hauptsache aus exzentrisch gelagerten und mit gewissem Spielraum in ihrer Ebene drehbaren Kreissegmenten, die an einem gemeinsamen, auf die Welle aufgesetzten TrägerThe present invention is an automatically acting switching device that serves to move a body when changing the direction of rotation of its shaft from a position in to switch the other. It mainly consists of eccentrically mounted and Circular segments that can be rotated in their plane with a certain amount of leeway and which are attached to a common, carrier placed on the shaft

ίο befestigt sind. Diese Kreissegmente besitzen an ihrem äußeren Umfange zahnförmige, in verschiedenen Ebenen liegende Vorsprünge, welche bei der Umkehrung des Drehsinnes der Welle in der einen oder anderen Ebene zum Eingriff gelangen mit Anschlägen, die an dem umzuschaltenden Körper entsprechend befestigt sind. Letztere werden hierbei mit den Kreissegmenten aus dem Bereich der Zähne verschoben und in eine Lage gebracht, in der sie unter dem Einfluß der Fliehkraft festgehalten werden.ίο are attached. Own these circle segments on their outer circumference tooth-shaped projections lying in different planes, which when reversing the direction of rotation of the shaft in one plane or the other get into engagement with stops that are corresponding to the body to be switched are attached. The latter are here with the circle segments from the area of Teeth displaced and brought into a position in which they are under the influence of centrifugal force be held.

Beiliegende Zeichnung veranschaulicht eine Ausführungsform des Erfindungsgegenstandes, und zwar zeigen Fig. 1 bis 3 denselben in drei verschiedenen Stellungen. Fig. 4 und 5 zeigen eine besondere bauliche Ausführung der Vorrichtung zum Umstellen der Bürstenbrücke an einem Kollektor, und zwar Fig. 4 eine Vorderansicht und Fig. 5 einen Schnitt nach Linie I-II der Fig. 4.The accompanying drawing illustrates an embodiment of the subject matter of the invention, 1 to 3 show the same in three different positions. Figures 4 and 5 show a special structural design of the device for moving the brush bridge on a collector, namely FIG. 4 is a front view and FIG. 5 is a section along line I-II of FIG. 4.

Mit der Welle A ist der Träger T fest verbunden. An demselben sind zwei halbkreisförmige Scheiben K K um die Stifte S S schwenkbar angebracht. Diese Scheiben besitzen in der Mitte halbkreisförmige, mit ihrem äußeren Umfange konzentrische Ausschnitte, deren innerer Rand beim Ausschwingen der Scheiben um die Stifte 5 sich an den zylindrischen Teil des Trägers T exzentrisch anlegt. Die so entstehenden ringförmigen Segmente besitzen an ihrem äußeren Rande an jedem Ende je einen zahnförmigen Vorsprung, welche an jedem Ende wechselseitig zueinander in zwei verschiedenen Ebenen liegen und je nach dem Drehungssinne der Welle A abwechselnd mit dem umzuschaltenden Körper zum Eingriff gelangen. Bei Drehung des Schaltwerkes um die Welle A im Sinne des in Fig. ι eingezeichneten Pfeiles sind somit die Zähne Z₁ Z₁ , bei Drehung im entgegengesetzten Sinne dagegen die Zähne Z₂ Z₂ zum Eingriff bereit. In jeder dieser Ebenen befindet sich je ein Anschlag U₁ bezw. U₂ im Wirkungsbereich der betreffenden Zähne. Diese Anschläge U₁ und U₂ befinden sich an dem bei Wechsel der Drehrichtung der Welle A umzuschaltenden Körper.The carrier T is firmly connected to the shaft A. Two semicircular disks KK are attached to the same so that they can pivot about the pins S S. These disks have in the middle semicircular cutouts with their outer circumference concentric, the inner edge of which rests eccentrically on the cylindrical part of the carrier T when the disks swing out around the pins 5. The resulting annular segments have on their outer edge at each end a tooth-shaped projection, which at each end lie alternately in two different planes and, depending on the direction of rotation of the shaft A, alternately come into engagement with the body to be switched. Upon rotation of the switching mechanism around the shaft A in the meaning of in Fig ι. Arrow drawn teeth Z ₁ are thus Z _1, Z ₂ Z ₂ teeth provided on rotation in the opposite sense, however, for engagement. In each of these levels there is a stop U ₁ respectively. U ₂ in the area of action of the relevant teeth. These stops U ₁ and U ₂ are located on the body to be switched when the direction of rotation of shaft A is changed .

Die Wirkungsweise der Vorrichtung gestaltet sich demnach folgendermaßen:The mode of operation of the device is therefore as follows:

Bei Drehung im Sinne des in Fig. 1 eingezeichneten Pfeiles erfaßt einer der Zähne Z₁ Z₁ den in derselben Ebene liegenden Anschlag U₁ und bringt denselben in die in Fig.i gezeichnete Stellung. Hat der Anschlag U₁ diese Stellung erreicht, so ist er dem Wirkungsbereich der Zähne Z₁ Z₁ entrückt. Dagegen befindet sich der mit den Zähnen Z₂ Z₂ in derselben Ebene liegende Anschlag U₂ nun-When rotating in the sense of the arrow drawn in FIG. 1, one of the teeth Z ₁ Z ₁ detects the stop U ₁ lying in the same plane and brings it into the position shown in FIG. When the stop U _{1 has reached} this position, it is removed from the area of action of the teeth Z ₁ Z _1. In contrast, with the teeth of the Z ₂ Z ₂ is in the same plane lying stop U ₂ N & N

Claims

more directly opposite the edge of the panes. As a result, the teeth Z ₂ Z ₂ brush without grasping the same on the back of this stop, so that the two segments KK swing out around the pins S S and get into the position shown in Fig. Ι. In this position they are held in place by centrifugal force so that the entire switching mechanism moves freely past the stops U ₁ and U ₂ .

If the direction of rotation of the shaft A is reversed, the speed is temporarily zero, so that the effect of the centrifugal force on the segments KK ceases and they assume such a position under the action of gravity that under all circumstances one of the teeth Z ₂ Z ₂ the stop U _{2 is} detected and laterally displaced so far that it comes out of the effective area of the teeth. In this case, the teeth Z ₁ Z _{1 in} turn brush with their rear side against the stop U ₁ , as shown in FIG. 3, so that the two segments KK assume the position shown in FIG Shaft to be held by the effect of centrifugal force. Even when rotating in this sense, the entire system rotates freely past the stops U ₁ and U ₂ .

The displacement of the stops U ₁ and U ₂ achieved in this way when the direction of rotation of the shaft A changes is used, as mentioned, to move a body from a certain position into another position.

In this case, a linear displacement of the body can be achieved, as indicated in Fig. 1, or a rotation of the body about a point M, which, according to FIG Fig. 3 is on the opposite side of the line of engagement, as is the fulcrum of the engaging part (external toothing). Finally, however, the body to be displaced can move on a circular path, the center of which (see FIGS. 4 and 5) coincides with the fulcrum of the switching mechanism.

4 and 5 simultaneously show the application of the switching device, for example, for switching the brush bridge, ie the pole switching of a DC dynamo machine, which, such as train lighting machines, are alternately driven in one sense or the other. For this purpose, the carrier B for the brush pins is rotatably placed on the dynamo frame G , and the pawls R ₁ and R ₂ with the stops U ₁ and U _{2 are} attached to it so that they can rotate around the pins LL. The spring F presses the pawls R ₁ and R ₂ against the inner edge of the ring V attached to the dynamo frame, which is provided with two cutouts EE .

Upon rotation of the shaft A in the meaning of in Fig ι. Arrow drawn the tooth Z ₁ ₁ summarizes the stop CZ lying with it in the same plane of the pawl R ₁ and takes the carrier B, together with the brush pins and the brush C in terms of the direction of rotation until the roller W ₁ attached to the pawl R is inserted in a position offset by 90 ° in the cutout E on the inner edge of the ring V (right in FIG. 4 of the drawing). This defines the end position of the brushes C C and at the same time removes the stop U _{1 from} the range of action of the teeth. With the mentioned adjustment of the carrier B , however, at the same time the roller W _{2 stepped} out of the cutout E (left in the drawing), so that the teeth Z ₂ lying in the same plane brush from the rear over the stop U _{2 lying in the front plane,} whereby the pivotable circular segments K are brought into such a position and are permanently held by the centrifugal force that the segments K rotate freely. By reversing the direction of rotation exactly corresponding thereto operations take place by one of the teeth engages Z ₂ in the stop U ₂ and sets the brush in the position shown in Fig. 4 position.

In a similar way as for pole changing by changing over a brush bridge the device can also be used to switch over an ordinary switch.

Instead of the two semicircular segments indicated in the drawing can also have several segments of the same shape and also in place of the ones indicated two stops, several of which are used.

105 patent claim:

Automatic switching device which has to switch a body when changing the direction of rotation of a shaft from one position to another, characterized in that pivotable circular sections (K) are mounted off-axis on a common carrier (T) attached to the shaft and on their outer one Circumferences of tooth-shaped projections (Z ₁ Z ₂ ) which are mutually mutually in different planes and which come into engagement with each change in the direction of rotation of the shaft with stops (U ₁ U ₂ ) of the body to be switched, which lie in the same plane

like the corresponding stops (Z ₁ Z ₂ ) of the circular sections and move them to one side or the other until they and the body to be switched are removed from the effective area of the relevant teeth (Z ₁ Z ₂ ) , with those in the other plane lying teeth (Z _x ZJ with their backs touch the corresponding other stops (U ₁ U ₂ ) and thereby bring the circular sections into a position in which they can move freely past these stops and are held under the influence of centrifugal force.

For this purpose ι sheet of drawings.