DE715435C - Electric shock receivers for telecommunication systems operated by a step switch with return for a certain period of time - Google Patents

Description

By a step-by-step mechanism with return for a certain period of time actuated surge receiver for telecommunications systems The invention relates to a operated by a step switch with return for a certain period of time Current impulse receiver for telecommunication systems, in particular railway systems, in which contact spring sets be operated; this actuation takes place by cams that can be rotated with the ratchet wheel o. The like. Via one or more stationary and rotatably mounted switching segments that be held in their rest position by a spring.

In the known designs, the switching segment is also on the return operated, which in certain arrangements, such. B. timers must be avoided because it triggers unwanted switching processes and disturbances in signaling can be evoked.

In other known designs, one has in the surge receiver a partition is installed around which a contact arm is passed; the contact arm depending on its guidance on the upper or lower side of the partition is axial shifted, whereby a conductive connection is alternately established and again is interrupted.

Another known embodiment uses a switching element and a fixed contact plate, on the back of which a layer of insulating material is provided is. If the switching element is passed around the fixed plate, then this stands Switching element with the contact plate when it slides past the front of the plate, in leading connection; this connection is then made when the switching element moves back interrupted again along the insulated rear side of the plate.

The disadvantages of this arrangement are that over the switching element and across the contact plate when you touch the conductive connection and so that the electrical connection is established. One such over in motion Circuit made parts works in rough operations as a result Occurring bruises and shocks quite unsafe and provides' for vital Systems such as railway systems, for example, do not provide sufficient operational reliability.

The invention suggests another to avoid these disadvantages Weg a and uses a rotatably mounted switching segment, which during the forward movement of a On the ratchet arranged switching element pressed against a contact spring set is operated and this; according to the invention, the movement for actuation during the return movement of the switching segment, which are provided on your switching wheel, switching cams, angles, Pen o. The like. Past the switching segment without touching it.

The setup is shown in Figures i to 6. Fig. I, 2, 3 and 6 show the mode of operation of the stepping mechanism, omitting all of them Parts that are not required to understand the processes; in fig.4 5 and 5, contact sebginent and set of springs are shown in side and front views.

The contact segment i, designed as a strong steel bracket, is on lower part of its straight extension at 2 rotatably mounted. Through the flap 3 it is with a contact spring of the contact spring set q. connected which through a spring 5 is held in the rest position. The segment is on the inside occupied with .einer thin leaf spring 6, which at the upper end with nvei screws; attached is, at its lower part a cutout 8 is covered and bent slightly flat downwards is to enable a safe run-up of the actuator q.

Fig. I shows the actuator 9 and contact segment i in the rest position, the latter being slightly inclined towards the center in its upper part is. In Fig.2, the actuator has run into the contact segment. through which this is pressed into circular impact position and thereby the contact spring set4 actuated. As soon as the actuator moves forward over the contact segment has got out, the latter returns to its rest position, so that the actuator In its return, as shown in Fig. 3, it now moves downwards behind the contact segment emotional. When it reaches the lower part of the segment, it slides through the recess 8 without touching the segment itself, placing the leaf spring 6 in its lower Part lifts slightly. Because the leaf spring is very thin and relatively far from the point of application is attached, there is no disruptive pulling or bouncing effect on the segment.

Claims (2)

PATENT CLAIMS: i. Impulse receivers for telecommunication systems, in particular railway systems, operated by a stepping mechanism with return for a certain period of time, in which contact spring sets are actuated by means of cams or the like that are rotatable with the switching wheel via one or more stationary and rotatably mounted switching segments Q held by a spring in their rest position, characterized in that the switching cam, angle, pin or the like (9) which is used to actuate the switching segment ( i) and is provided on the switching wheel moves behind the switching segment on return without touching it. 2. Impulse receiver according to claim i, characterized in that at the front on the inside of the switching segment (i) a leaf spring (6) adapted to this segment is attached in such a way that the actuating member (9) during the time switching process within the leaf spring to the front, here at the end of the Time switching process around the leaf spring and the segment, then back on the outside of the segment, through a recess (8) in the segment and further out on the leaf spring 16; slides, the leaf spring being temporarily lifted from the segment without bringing the segment out of its rest position.