DE715612C - Short-circuit contact activated by the plug in the case of multi-pole plug devices - Google Patents

Description

Short-circuit contact actuated by the plug in multi-pole plug devices With plug devices, there is often a need to connect individual contact poles @ either when the plug is inserted or removed, or to each other. associate. For this reason, additional installation of resilient contacts is required, which: open or close the contact, depending on whether the plug is inserted or removed.

Especially with plugs and sockets with a high protective edge: surrender Due to the long overlap on both sides, larger opening paths of the contacts, so that the resilient properties of the material are insufficient for one in use to ensure permanent reliable contact.

If the short-circuit contact to be operated is on the The side facing away from the plug, i.e. below the socket base, must be the 'Contact actuated by a pin or the like reaching through .the base will. If the contact is attached to a one-armed contact spring, then when it is pressed down, it is inevitably inclined to the direction of actuation of the Connector, whereby: once the through hole in the base must be made larger and therefore there is insufficient guidance for the pen, and on the other hand this inclined position also promotes the bending of the contact spring.

The invention relates to: a particularly advantageous embodiment: one such short-circuit contact with multi-pole sockets, in particular - motor vehicle trailer plug devices, which is arranged on the back of the socket and on the front through the plug is inevitably actuated when unplugging and plugging in.

This Kurzschlussko, ntakt is built so that the contact spring in the unstressed State is open. They are actuated by the pins reaching through the base, which on the front under the action of one or more compression springs stand and the contact spring by means of a stop in the rest position the whole Press the device against the mating contact, which closes the contact. The size of the contact pressure is therefore dependent on the compressive force of the springs and can be kept smaller or larger as required. This short-circuit contact can also be carried out in reverse so that the contacts are in the rest position the compression springs are open.

If the plug is inserted, the pin is pressed in and in doing so overcome the compressive force of the springs. As a result, the contact spring is relieved and adjusts to its natural position, which opens the contact. Of the This means that the pen can travel any distance, regardless of its size the path of the contact spring, so that this does not affect its suspension will.

The idea of the invention is explained in more detail in the drawing, namely are two possible versions with closed contact and one version with open contact in the rest position.

A base i made of an insulating material is in a housing 2 permanently installed. Both parts can also be made from one piece. Between diem base i and housing 2, there is an air gap 3 in which the protective collar of the plug is inserted. In this air gap 3, the actuating part is for classified the short-circuit contact. The actuation part can also be on the top the socket or within a socket: e: nkontaktes be arranged and is then actuated by the face of the plug or by a plug contact.

The short-circuit contacts ¢, 5 are on the underside of the base i arranged. Their actuation by the action of the plug when entering and exiting takes place by .ein bracket 6 on which one or more helical springs 7 act and to which one or more pins 8 penetrating through the base i are attached are.

In Fig. I a version of the short-circuit contact is drawn, in which a pin 8 is riveted to a bracket 6, which 'under pressure of two coil springs 7 stands. The pin 8 reaches through the base i and through a contact spring 9 of the contact 5 therethrough. Below the contact spring 9 has Pin 8 has a stop whose diameter is larger than the through hole of the Spring g. This gives the pin 8 free movement without the spring 9 unfavorable to influence. In Fig.2 there is a short-circuit contact with two pins 8 drawn, each of which is comprised of a helical spring 7. Here is the crackdown even only one pin 8 by the contact spring 9 is not required.

In Fig.3, a version is drawn in which the short-circuit contact 4., 5 is open in the rest position and in which a pressure part of any shape to the. under the action of a spring 7 standing pin 8 is attached.

Claims (3)

PATENT CLAIMS: i. Short-circuit contact actuated by the plug in multi-pole plug-in devices, in particular for motor vehicle trailer plug-in devices, characterized in that: an actuating bracket (6) arranged on the front and subject to a special spring action (7) on which the plug inserted into the socket is plugged; acts and on which, a (8), which extends through the base (, i) and the contact spring (9), acts with a stop of the actuating pin (8) on the contact spring (9) in such a way that the bracket (6) has a covers a greater distance than the contact spring (9) arranged on the back of the base (i) and set for a certain suspension travel. 2. Short-circuit contact according to Anspruqh i, characterized in that that the spring force (7) of the bracket (6) acts as contact pressure on the contact spring (9) is transmitted. 3. short-circuit contact according to claim i and 2, characterized in that that the base (i) penetrating pins (8) are exactly the same vertically Move in the same direction as the plug to be inserted and through the holes in the base be appropriately guided.