DE1078663B - Impulse switch - Google Patents

Description

GERMAN

A pulse relay is known to be characterized by that when a current coil is switched on for a short time, the contacts are in the working position brings and holds the contacts again in the rest position when switched on again briefly covered.

In certain arrangements, the contact sequence can be viewed as a changeover. the sequential switching on and off of the contacts has been known for decades. So used z. B. one of the oldest systems have a cam which is moved one step at a time by the armature stroke. Means of a cam, spring assemblies can then be brought into the desired position. The procedure requires a high electromagnetic control force due to the high pressure of the spring assemblies and therefore relatively requires a lot of space, especially when large spring assemblies or those for high current are to be switched on.

Another method uses a wire plunger attached to the relay armature, which is inserted into a recess is moved so that it gets stuck mechanically in the tightened position when tightened for the first time. When the power is pulled for the second time, the plunger moves in a further recess, which opens it when the power is switched off brings it to the zero position. This system, which has found widespread use, is through the wire ram, which is not adjustable, very sensitive, has a very high wear and tear and therefore often fails. Bigger ones Switching operations are difficult to carry out and practically not carried out with this system been. It is also highly position-dependent.

A similar design uses two wire pins that are alternately depressed by a rocker on the armature and thus bring the contacts into one position or the other. In practice, that occurs same difficulties as marked above.

Another embodiment uses complicated mechanical lever arrangements that form the contact bridge (the contact comb) hold mechanically and by switching the mechanical lever on the next Trigger the anchor tightening again. Due to the complicated arrangement of the levers and the pressure of the anchor packages this type of solution has so far not found widespread use on these levers.

There are also known designs in which polarized relays are used. The effort for this relay is naturally extremely high and therefore prevents further spread this version.

In particular, with the previous solutions, a higher contact load without enlargement or It is not possible to increase the control force and thus the switch.

Applicant:

Dr.-Ing. Fritz Hahn,
Heidelberg, Moltkestr. 6th

Dr.-Ing. Fritz Hahn, Heidelberg,
has been named as the inventor

The present subject matter of the invention avoids the disadvantages outlined above in that the After the armature has been tightened for the first time, a spring in the locked position provides a contact point in Working position is held and that this locking spring when the armature is tightened again by a from the armature operated cam is brought into the unlocked position that the contact comb in the Rest position goes. The mode of operation of the impulse switch is based on one embodiment (Fig. 1 to 3) described.

The armature A pushes the contact comb K up, the locking spring F falling into the notch k of the contact comb (FIG. 2). After the armature A has dropped, the contact comb K falls onto the nose T of the spring F and remains there. He keeps the contacts in working position. At the next. When the armature A is tightened, the pawl St advances the gear Z with the cams »by one step. Now the cam η of the gear is opposite the bulge N of the locking spring. The locking spring F is therefore stretched and in the unlocked position by the

4u cam η (Fig. 3), so that the comb K falls back into its zero position. When the armature is tightened again, the game is repeated, since at the same time the cam disk is turned one step further and the cams N and η are out of engagement. The spring F therefore falls back into the notch £ of the contact comb and holds it in the working position after the armature has dropped.

The subject of the invention uses only a small, lightweight cam disk compared to the known relays, which has to push back the locking spring by about 10 g contact pressure with every second tightening. The additional load on the anchor is therefore insignificant and is particularly important when the contact force is high does not matter for the suit itself.

903 768/321

The contact wheel Z can be built very easily, since it only has to move the locking spring F. The switching device is relieved of the contact pressure in any case, so that any number of contacts can be actuated, that is, the same lightweight arrangement can be used for small and large switches with few or many contacts.

Another advantage of this arrangement is that the space required is extremely small. A large The independence of the function from the location is preferred.

The drawing shows only one embodiment with a cutting armature magnet. The device can of course also be attached to flat armature or lifting magnets, etc. Depending on the design, the contact comb can be used instead of the notch k

would get a nose that falls into a recess in the locking spring F.

Claims (1)

Claim: Impulse switch, characterized in that the contact comb (K) is held in the working position by a spring (F) in the locking position after the armature is first tightened and that this locking spring is brought into the unlocking position when the armature is tightened again by a cam actuated by the armature is that the contact comb goes into the rest position. Considered publications:
German patent application F3274VIIIb / 2Ic (published May 18, 1955). 1 sheet of drawings