FI75947B - AV FORMMOTSVARIGT IN I VARANDRA GRIPANDE DELAR UPPBYGGD LUFTKONTAKTOR. - Google Patents

Description

, 75947

An air protection switch built of interlocking parts based on shape

The invention relates to an air protection switch constructed on the basis of interlocking parts, the fixed magnetic part and the flap anchor and the guide coil pushed into one branch are inserted into the pot-shaped housing transversely to the direction of movement of the flap anchor. with.

In a known air protection switch of the type mentioned above (DE-PS 11 33 010, DE-AS 11 45 701), a support-supported support supporting the contact pieces is movably arranged between the bottom of the housing and the coil core of the magnet and connected to the flap anchor in the form of a ball or roller joint. This association is necessary to secure the flap anchor against the transverse displacement with respect to the direction of movement. However, the shape-based connection can lead to rotation when the contact holder is moved. In addition, in this known device, the fixed magnetic part must be held in the housing by means of a screw.

The invention should provide an air protection switch of the type mentioned above, which enables simple control of the anchor while maintaining the shape-based structure. The task is solved in a simple way so that the anchor is assembled from separate plates and the plate adjacent to the magnetic branch extends in a bent part between the housing wall and the branch and the branch of the fixed magnetic part is held in place -olak-experimentation. Riveting or other fastening of the individual plates to each other can be avoided if the side edges of the damper adjacent to the bend at an angle of 35 to 90 ° are bent! - 75947 2 na the tongues between the branches pointing away from the branch. The tongues can advantageously also act as holders for compression springs, if necessary.

With the help of the drawings, 5 implementation examples and a method of operation according to the invention will be described in more detail.

The figures show: Fig. 1 a circuit-breaker with a magnetic system and a contact bridge support in a sectional side view in the open position, Fig. 2 a sectional view of the magnetic system according to Fig. 1 in line II-II, and specifically in the closed position, Fig. 3 a sectional view of the circuit-breaker in Fig. 1 III, Fig. 4 is a sectional view taken along line IV-IV of Fig. 1, and specifically a branch holder of a fixed magnetic part in the housing, and Fig. 5 is a fragmentary view of the circuit breaker of Fig. 1 with a short circuit 20 for AC operation replaced by a DC drive.

Air breaker housing 1 is inserted into the fixed magnet 2 on which is inserted into the coil 3 kelarun-koineen, together with the anchor 4 which has been assembled from separate sheet metal plates, the fixed magnetic part 2 at 25 is set to Figure 1, the terminal plate 5, which on one side has been fixed magnetic part 2 corresponding to the branch 6 and rests on the housing projections 7 on the one hand. A short-circuit ring can also be placed in place of the hub plate, as shown in Fig. 5, which rests on the coil body 9 on the one hand and on the branch 6 or the housing projection 7 on the other hand. provided with a bend 12 which will be between the housing wall 13 and the branch 10. The rotation 14 resulting from the bending forms a bearing point for the entire anchor. The tongues 15 of the separate plate 11 bent away from the branch 10 35 act here as holders of other separate plates 16 and 17 and on the other hand as receivers of compression springs 18 which press the anchor onto the branch 10. The free end 19 of the separate plate 17 acts as a connector from the anchor 4 to the contact carrier 20. by means of a return compression spring (not shown) takes care of the return of the anchor 4. Because there is no shape-based connection between the anchor 4 and the contact carrier 20 in all directions, the contact carrier can more easily adapt to the corresponding movement 10 as it moves. The anchor is attached in the direction of all sides. Rounding 14 rests on the housing. The inner side of the separate plate 11 rests on the yoke 10. The longitudinal protrusion of the anchor in the direction of the contact support 20 is likewise prevented by the yoke 10 and the bending 12. The ankle-15 disc is retained against the direction of movement by means of a housing rib 21 or a compression spring 18. Transverse movement is prevented by other housing ribs 22. A precisely suitable coil retainer is provided by compensating ribs 23 in the coil body 9. Displacement of the fixed magnetic part 2 is prevented by the housing shoulder 24 and the compensating rib 20 25.

During installation, the coil 3 with its coil body 9 is pushed onto the branch 6 of the fixed magnetic part. The hub plate 5 or oi-locking ring 8 is inserted and then pushed into the housing 1 by a complete component consisting of a fixed magnetic part 2, a coil 3, a hub plate or short-circuit ring and an inflated anchor 4 with retraction springs 18 if necessary and fastened as described above. . This is therefore a relatively simple installation. Basically, the same parts can be used up to the short-circuit ring and the pole plate in DC and AC structures. No additional fastening means such as tapping, screws, welding are required for the short-circuit ring or hub plate. The side control 35 of the fixed magnetic part 2 can be performed by the housing control, as can be seen in Fig. 4.

Claims (3)

4,75947 An air protection switch constructed of interlocking parts based on a shape, the fixed magnetic part (2) 5 and the flap anchor (4) and the guide coil (3) pushed onto one branch (6) are pushed into the pot-shaped housing (1) transversely to the flap anchor (4), one end (19) of the flap anchor (4) rests on the branch (10) of the fixed magnetic part (2) and the other end 10 can be brought into contact with the contact holder (20), characterized in that the anchor (4) is assembled from separate plates (11, 16, 17 ) and the plate (11) adjacent to the magnetic branch extends with its bent part (12) between the housing wall (13) and the branch (10), and that the branch (10) of the fixed magnetic part (2) is held longitudinally in place in the housing (1) by guide shoulders (26). ), and that a pole plate (5) or a short-circuit ring (8) is placed on the second leg (6) and is held in place by the shoulder of the housing (1). Air protection switch according to Claim 1, characterized in that the side edges of the damper (11) at an angle of 90 ° to the bent part (12) are bent by other plates (16, 17) pointing away from the branch (10). (15). Air protection switch according to Claim 2, characterized in that the tongues (15) act as holders for compression springs (18).