DE3114194C2 - Contact arrangement for a switching device - Google Patents

Abstract

The invention relates to a contact arrangement for a switching device which has a contact bridge (12) and connections (10) carrying fixed contact parts (9). The fixed contact parts (9) are held in the housing (1) and protrude into the contact area of the contact bridges (12) with the fixed contact parts (9). A guide recess (4) encompassing the contact bridge (12) in the shape of a pot is provided in the housing (1). The contact compression spring (13) is supported on the one hand on the contact bridge (12) and on the other hand on the base (14) of the guide recess (4). This makes it possible to build a contact arrangement for switching devices in which, without complex threading, a contact bridge and contact pressure spring can be inserted in a simple manner.

Description

20th

The invention relates to a contact arrangement for a switching device, consisting of a contact bridge, which is slidably guided against a contact pressure spring supported on one side of the contact bridge, and the fixed contact parts that are held in a housing and protrude into the contact area of the contact bridges, with one in the housing used, the contact bridge as a guide comprehensive, cup-shaped part, on the bottom of which the other end of the contact spring flies off u.td whose edges are held by the fixed contact parts.

In an arrangement of the above, annten type (DE-AS 19 34 867) the parts including the cup-shaped Guide part inserted in the direction of movement of the contact bridge and through specially provided bent tabs of the connections of the fixed contact parts held in the pushed-in position.

In a further known arrangement (DE-OS -to 27 43 156), the parts are replaced by additional snap covers kept able.

The present invention has for its object a contact arrangement of the above To create kind that is simple to build and easy to assemble.

This is achieved in a simple manner in a contact arrangement of the type mentioned above in that the Housing is divided into two parts in the longitudinal direction and the cup-shaped part as to the contact bridge and to Cover part of the housing is formed towards an open box.

This advantageously makes it possible to use the material surrounding the contact point in accordance with the Requirements to be chosen freely, without taking into account mechanical aspects that apply to the whole Switching device apply to have to pay attention.

An exemplary embodiment according to the invention is described with reference to the drawing. Show it

Fig. I and 2 front view and side view partly in section in the setting and

F i g. 3 and 4 front view and side view of the arrangement according to FIG. 1 and 2 in the switched off Condition of the contact arrangement,

The contact arrangement shown in the drawing is, for example, an auxiliary switch for attachment to any switching devices, for example a motor protection switch. The housing 1 of the contact arrangement consists of the shell-shaped lower part 2 and the cover 3. In the lower part 2 there is a guide recess 4 for an actuating plunger 5, which has an extension 6 through an opening 7 in the bottom of the lower part protrudes. The devices, which are no longer shown, such as the trigger mechanism, act on this extension 6 of the motor protection switch or the contact bridge carrier of a contactor. For guiding the actuating tappet 5 in the lower part or on the cover 3 are guide cams 8. In the lower part 2 are still Fixed contact parts 9, which are in conductive connection with the connections 10, are introduced into a recess 11 in the lower part 2 of the housing and their contact area lies in the movement area of the contact bridge 12. On the contact bridge 12 supports one end of a contact compression spring 13, the other end on the bottom 14 of a box-shaped Insert 15 rests. The box-shaped insert 15 is practically adapted to the contour of the recess 11. He rests with the end faces 16 on the fixed contact parts 9. One side of the open box is covered by the Cover 3 formed after it was put on. The box-shaped one formed by four side surfaces Insert 15, together with the contact compression spring 13 and the contact bridge 12, can thus be pushed into the lower part from the front be inserted. After being pushed in, the contact bridge is supported on the fixed contact parts 9, as shown in FIG. 1 can be seen

The actuating tappet 5 can also be inserted into the lower part 2 before the cover 3 is placed. Depending on Position of the extension 6, d. H. of the actuating plunger 5, the contact arrangement can be a make or break contact can be used. The different positions are shown in FIG. 1 and 3.

Due to the external guidance of the contact bridge 12 in the box-shaped insert 15, a complex Threading the contact bridge can be avoided. It is just an insertion with the box-shaped open Use required. The replacement of contact parts is also considerably simplified during service work.

List of reference symbols

1 housing

2 lower part

3 lids

4 guide recess

5 operating tappets

6 appendix

7 opening

8 guide knobs

9 fixed contact parts

10 connections

11 recess

12 contact bridge

13 Contact pressure spring

14 floor

15 box-shaped insert

16 front side

1 sheet; i! T / cichniiiiuer,

Claims (1)

Claim: Contact arrangement for a switching device, consisting of an opposing one on one side of the Contact bridge supporting contact pressure spring s displaceably guided contact bridge and the Fixed contact parts carrying connections, which are held in a housing, in the contact area of the Contact bridges protrude, with an inserted into the housing, the contact bridge as a guide ι ο send, cup-shaped part, on the bottom of which the other end of the contact spring rests and whose Edges are held by the fixed contact parts, characterized in that the housing (1) is divided into two parts in the longitudinal direction (2, 3) and the cup-shaped part as to the contact bridge (12) and to Cover part (3) of the housing open towards the box (15) is formed.