DE1987785U - SNAP SWITCH WITH A CONTROLLABLE CONTACT LINK. - Google Patents

Description

DlPL »ING..ERICH WEINTRAUD, FRANKFÜRT, HAINZERLANDSTR.136

! A.202 670 * -6,4.68> 1

FRIEDRICH MERK .. TELEFOIBAU

GmbH
Munich

Snap holder with a reversible Contact member

The object of the innovation is a snap switch with a reversible contact member that is at least one Switch position on two side by side creates stationary mating contacts »

So that the contact of this contact element with both mating contacts "" contacts in the same way, i.e. under the same contact pressure takes place, is a very precise adjustment of the contact member or the ~ with previously known switches of this type Ses contact member-bearing spring required, but the disadvantage that can occur again and again that through wear and tear the contact points or by other influences a different contact making of the common contact member occurs at the two mating contacts.

To this disadvantage known snap switch with a reversible contact member j ,. which in at least one switch position applies to two stationary mating contacts arranged next to each other »to switch off, the innovation TOr ₉ proposes that the attachment of the contact member on a movable contact carrier designed as a leaf spring by means of a movement of the contact member in the direction of the mating contact arrangement allows Slot takes place in which the front end of the contact carrier engages.

According to a further feature of this innovation, the reversible contact member is one on the base Ring with incision or one with a central one Cut-out equipped prism piece formed. Are

- 2 ··· ■

_ 2

the mating _{contacts designed as pins 9} as this is proposed by the innovation and if the snap switch is to act as a double-pole changeover switch, the two pairs of contacts form a cage space, which is delimited at four points by the pins and in which the reversible contact member moves.

In the drawing, an embodiment of the innovation is shown. Show it?

Fig. 1 is a snap switch designed as a microswitch, at which part of the wall has broken away to illustrate the switching mechanism

Fig. 2 and 3 the contact arrangement for a

double-pole changeover switch with a reversible contact member designed as a contact ring and

Fig. 4 shows the same arrangement as that

Figures 2 and 3 _} only that a prism piece provided with a holding slot is used instead of the annular contact member.

The snap switch shown in Fig. 1 contains as Contact carrier a U-shaped leaf spring 75 » which are provided in notches with angled ends Ansohlagsstüekes 71 is supported. At her front At the end, the leaf spring 75 ′ is pushed into a contact ring 76 which is provided with a slot 72 for this purpose. The contact ring 76 lies in the one holding position with its outer circumference on the pair of contacts

on, while in the other position the contact ring strikes against the pins 78. As Fig. 1 shows, the fixed pairs of contacts 77, 78 designed as pins that delimit a cage space between which see the reversible contact member 76 moves. This movement of the contact member 76 or the contact carrier 75 is under the action of a snap spring 79? the at one end is fixedly mounted and with its other free end in the connecting web of the U-shaped Contact carrier 75 hooks. By pressing on the spring it is bent downwards and during this process the contact piece 76 snaps into the other beta * -. in which the contacts 78 flow through current will.

The pressing of the spring 79 can be brought about, for example, by pressing a button 74.

To form a high-quality contact, the surface of the contact ring 76 is provided with a corresponding Provided contact material, from which the contact pin pairs 77 and 78 are expediently made “The whole Contact control system is built into a container 73 of insulating material.

In Fig. 2, the contact arrangement is shown enlarged. Since the ring 76 via the slot 72 on the At the end of the spring 75 is movable along the contact pairs 77 and 78, the contact ring 76 is under action of the spring 79 always with the same tension on the two individual contacts of the contact pairs 77 and 78.

The balance of power with regard to the contact pressure can be found in FIG. 5. The one acting on the contact member 76 downwards and originating from the spring 79 The force for the individual contact point is P / 2

and acts at every contact point as an pressure pressure in the Amount N. j3s - this results in a force transmission «, which ensured a particularly large contact pressure

In the arrangement of Pig. 4, the contact ring 76 is replaced by a prism piece 12, which in turn with a horizontally extending slot 11 for fastening this Kontaktstüekes on the front end of the Spring 75 is provided.

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Claims (4)

H4.202 670-6.4.681 S cPh u t ζ a ns ρ r ti eh e 1) Snap-action switch with a reversible contact element j, See that in at least one switch position on two stationary mating contacts arranged next to one another puts j together that the attachment of the Contact member 76 on the designed as a leaf spring (75) 'Movable contact carrier by means of a movement of the contact member 76 in the direction of the mating contact arrangement (77) allowing slot (72) takes place, in which the front end of the contact carrier (75) engages. 2) snap switch according to claim 1, characterized in that the reversible contact member (76) as a a contact ring ″ (.76) or a piece of prism on a base surface having a horizontal incision (72) "(Mg.4) is trained» 3) Snap switch according to claim 1, characterized in that the mating contacts are designed as pins ο 4) Snap switch according to Claims 1 and 3 _5, characterized in that the pins forming the contact pairs (77j 78) form a cage space for the contact member (76) to form a double-pole changeover switch.