DE600488C

DE600488C - Moving coil for electrodynamic loudspeakers

Info

Publication number: DE600488C
Application number: DEI41066D
Authority: DE
Original assignee: IDEAL WERKE AKT GES fur DRAHT
Current assignee: IDEAL WERKE AKT GES fur DRAHT
Publication date: 1934-10-25

Description

P λ ί ι·: ν τ λ N s ι· κ ϋ c n ii":P λ ί ι ·: ν τ λ N s ι · κ ϋ c n ii ":

ι. Tauchspule für elektrodynamische Lautsprecher, dadurch gekennzeichnet, daß die Drahtwindungen der Spule nur an einigen Stellen durch an der Membran befestigte Stützglieder gehalten werden, im übrigen aber frei (ohne besondere Stützung durch Tragkörper) im Luftspalt schwingend angeordnet sind.ι. Moving coil for electrodynamic loudspeakers, characterized in that the wire turns of the coil only in a few places through attached to the membrane Support members are held, but otherwise free (without special support by support body) in the air gap are arranged swinging.

2. Tauchspule nach Anspruch 1, dadurch gekennzeichnet, daß ■ sowohl der Kern' als auch der Außenpol mit Durchbrüchen versehen sind, die zum Durchlassen der Halterungen dienen.2. plunger coil according to claim 1, characterized in that ■ both the Core 'as well as the outer pole are provided with breakthroughs that allow them to pass through serve the brackets.

*) Von dem Patentsucher ist als der Erfinder angegeben worden: *) The patent seeker stated as the inventor:

Ferdinand Lading in Berlin.Ferdinand Lading in Berlin.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

REHUN. GEftPTICKT IX I)ERREHUN. PICKED IX I) ER

Claims

Earlier designs of electrodynamic loudspeakers consisted of the speaking coil from a bobbin with wire windings wound on it. This created the air gap between the two poles of the Loudspeakers kept unnecessarily wide, there could not be any cheap (as e.g. with electromagnetic Loudspeakers) magnetic flux conditions are established, and the arrangement of the loudspeakers always resulted greater magnetic losses.

In order to remedy this inconvenience, according to the invention the speaking parts are the Speakers designed in such a way that the wire windings are no longer on the whole Bobbin, but between individual brackets, for example made of pressed material can be produced, arranged. The invention also provides the arrangement of openings in the core and outer pole of the loudspeaker, so that the individual brackets in these openings can intervene and slide past. This ensures that the air gap is between the core and the outer pole of the loudspeaker need only be so large that the thin wire windings swing past them can. This results in a particularly favorable magnetic closure Core and outer pole manufactured; this makes the loudspeaker very efficient and the reproduction clear and particularly clear.

In the accompanying drawings, an embodiment is shown, but affect Similar constructions in no way reflect the idea of the invention, Fig. ι shows the arrangement of the windings the coil between the individual brackets, Fig. 2 the coil in plan view,

Fig. 3 the arrangement according to the invention of the openings in the core and outer pole of the speaker.

In Fig. Ι the wire windings 1 between * ⁵ see, for example, four individual brackets 2, 3, 4 and 5 used / The wire windings can be poured or pressed into the brackets, for example. These holders 2, 3, 4 and S are connected to the membrane 6 so that the wire turns 1 are held together by the membrane.

In Fig. 2 the arrangement of the turns in the brackets 2, 3, 4 and 5 is still once shown in plan view.

From Fig. 3, the inventive arrangement of openings 7, 8, 9 and 10 in the core 11 and the outer pole 12 to seen so that according to the invention the air gap between the core 11 and the outer pole 12 can be kept very low.