DE6942913U - CONTACT BRIDGE FOR STEP SELECTOR OF CONTROL TRANSFORMERS - Google Patents

Description

Contact bridge for tap selector of regulating transformers

The innovation relates to a contact bridge for tap selector of regulating transformers, which is a connection between the power ring attached to the central voter column and the fixed ones arranged in a circle around the voter column Establishes voter contacts.

The innovation is the task of improving such a contact bridge and achieves this in that the housing is provided for the contact bridge with a cover segment for the current ring and the housing and cover segment consist of a plastic part. The cover segment is useful here semicircular and provided on the inside with a guide groove corresponding to the shape of the current ring. The cover segment advantageously encloses the current ring up to a maximum of 180 °.

Another innovation is that the contact parts of the bridge are kept movable to a limited extent by bolts with springs and with caps that can be displaced in bores in the housing. The housing for the contact bridge is expediently provided with openings above and below the contact point “contact ^{bridge - current ring 11.} Furthermore, an opening for a guide rod of the contact bridge is advantageously arranged centrally on the outside of the cover segment as close as possible to the contact parts.

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The contact bridge according to the innovation has the advantage that: the housing and the cover segment can be made from one part, preferably injection-molded from plastic, without a: ...:. later machining. This puts the part in the. Very inexpensive to manufacture. Thanks to the guide groove on the inside of the cover segment, this is well guided on the power ring:. and is held by the guide rod on the current ring, whereby, "'··, the guide rod itself neither needs to be screwed ··' nor pinned to the cover segment. The contact parts of the bridge are held in the housing with play and thus guarantee a constant contact pressure both on the current ring and on the fixed selector contacts. Cooling of the contact point "contact bridge-contact current ring ^{11" is} achieved through the opening in the housing.

In the drawing, an embodiment of the innovation is shown. It shows

1 shows a section through the contact arrangement of the contact bridge according to I - I of FIG. 2,

FIG. 2 shows a view from above of the contact bridge and FIG. 3 shows a section III - III according to FIG. 2

A power ring 2 is attached to a central voter column 1. The fixed voter contacts 3 are circular around the voter column arranged, which is attached to insulating rods 4 and with shielding pieces 5 are provided.

The contact bridge with the contact parts 6 establishes a connection between the current ring 2 and the respective fixed selector contact 3. These contact parts 6 of the bridge are held in their position by bolts 7 with springs 3. The bolts 7 are provided with caps 9, which can be moved with play in the bores of the bridge housing 10 and thus keep the contact parts 6 limited in their movement.

The housing 10 for the contact bridge 6 is provided with a cover segment 11 for the current ring 6, vobei

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Claims (1)

Housing 10 and cover segment 11 consist of a single plastic part. As can be seen from FIG. 3, the cover segment 11 has a guide groove 12 on the inside, the shape of which is adapted to the current ring 2. The cover segment 11 is semicircular and encloses the current ring 2 up to a maximum of 180 °. An opening 13 for a guide rod 14 is provided in the center on the outside of the cover segment 11. The guide rod 14 serves to drive the contact bridge in the Welter switching of a fixed selector contact 3 to the next fixed selector contact 3. above and below the contact point "contact bridge 6- current ring?. ^N, the housing 10 depending on an opening 15. The assembly of the contact bridge is carried out in a simple manner in that the housing 10 with the cover segment 11 and the contact parts 6 is pushed onto the power ring 2 of the selector column 1 and in this position alone through the guide rod 14 is held and moved xvir. Due to the good fixation of the housing 10 with the cover segment 11 by means of the guide groove 12 on the current ring 2, it is not necessary that the guide rod 14 to the Cover segment 11 is screwed or otherwise fastened. This also makes assembly very easy, because No tolerance difficulties between the current ring 2 and an otherwise necessary hole in the guide rod 14 appear. Protection claims Contact bridge for step selectors of regulating transformers, the communication between the on the central selector säuie attached 3tromr \ _ ig and the circle around the Wflhip. Pillar "ησ-ί: ητΉηρ + ρη fos hori IiMhI a T ¹ V nnr.aV ±, he\ characterized by the fact that (10) for di.3 contact bridge (6) mi ·; a ^ a cover segment (11) can be seen for the current ring (2) ν- "and Housing (10) and cover segment (11) made from a plastic part exist", ■ '>? Q 1 3 -;,: R ,: t / X tß _4_ Contact bridge according to / ^ spoke 1, characterized that the cover segment (11) is semicircular and has a guide groove (12) on the inside is provided according to the shape of Stromringec (2). Contact bridge according to Claims 1 and 2, characterized in that the cover segment (11) supports the current ring (2) encloses up to a maximum of 180 ° ^ 4. Contact bridge according to one of claims 1 to 3, characterized in that the contact parts (6) of the bridge are kept movable to a limited extent by bolts (7) with springs (8) and with caps (9) displaceable in bores of the housing (10) . / ■ 5. Contact bridge according to one of claims 1 to 4, characterized in that the housing (10) for the contact bridge (6) is provided with openings (15) above and below the contact point "contact bridge (6) - current ring (2)". y 6. Contact bridge according to one of claims 1 to 5 » characterized in that in the center on the outside of the cover segment (11) as close as possible to the Contact parts (6) an opening (13) for one The guide rod (14) of the contact bridge (6) is arranged .., 42913