DE7430341U - SMALL SPEAKER - Google Patents

Description

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TELEPHONE Μ (Β7β DIPL-INQ. CURT WALLACH • MONKS 2, 1974 DIPL-ΙΝΘ. GÜNTHER KOCH OUR MARK: 749 - WAe DR. TINO HAI BACH

ISOPHON-WERKE OMBH., Berlin

Small speakers

The innovation concerns the external design of a small speaker, through which its purpose is promoted and expanded.

The object of the innovation is a small loudspeaker with a Except for the speaker opening, closed on all sides, e.g. spherical housing. According to the innovation, this Housing a stem-shaped approach, which is used to attach the loudspeaker (to a tripod or stand) or also can serve as a handle.

The stem attachment can be attached to the rear of the housing as an extension of the loudspeaker axis, but also for other purposes the underside of the housing, for example, be arranged at right angles to the loudspeaker axis.

The electrical supply line can run within the stem attachment, but in some cases it is advantageous to use the Lead the supply cord out of the housing separately from the handle attachment.

7430341 I8.oa76

According to an advantageous embodiment, the stem attachment tubular. In this case, the pipe socket is closed at its rear end and at its other end The end is connected to the housing in such a way that it is behind the loudspeaker membrane If the air volume located is increased through the interior of the pipe socket, then this has the special Advantage that the air spring stiffness for the speaker membrane and an undesirable shift in resonance of the loudspeaker towards higher frequencies, as is the case with a relatively small volume of air in the housing

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who could lower down in a favorable manner ?; the reproduction of the lower frequencies is thus facilitated by the arrangement of the Approach pipe improved.

Further details and advantages of the innovation can be found in? .Us from the following description with reference to the drawing.

Flg. 1 shows a schematic representation of a miniature loudspeaker 2, which is built into a spherical housing 1.

The housing is open on the emission side and covered by a sound-permeable cover 4. The supply cord is led out at the rear end of the housing, while a stem-like extension 3 on the underside of the housing 1 is arranged.

Flg. 2 illustrates schematically how the in Flg. 1

Loudspeaker shown can be used in a holder that is adjustable on a tripod or Stand attached 1st.

As can be seen, the newly designed small speaker be set up in catfish that are easy to assemble and dismantle, which is advantageous for certain purposes

7430341 18.0176

is * For example, in the so-called artificial head stereophony, which was previously only dependent on headphones, thanks to the use of such a miniature speaker more convenient possibility of eavesdropping. Playback too Quadrophonic can be achieved with the help of a single small loudspeaker Carry out in an expedient manner if one is in the vicinity of the intended listening position duroh temporary Setting up such small speakers tried the most favorable positions of the four sound sources. Furthermore the pipe socket 3 can also be useful as a handle to the small loudspeaker if dimensioned accordingly comfortably in the hand, e.g. if you only use the loudspeaker temporarily at a low playback level want to hold close to the ear. Was in solitary fillings So far, you have to rely on the use of headphones, which are, however, perceived as a nuisance for obvious reasons .

The housing 1 can also have a different shape, e.g. be designed in the shape of a pear.

Flg. For example, Figure 3 shows an embodiment with ones cylindrical housing 1, at the bottom of which elri pipe socket 3 is appropriate, which is thus in dev request »

r - runs along the loudspeaker axis.

In this case, the feed line son of the loudspeaker is only

duroh the Aasatzrohr 3 passed through.

The housing could also have surfaces on its outside be colored, which prevent the device from rolling, if you put it on a fish, for example.

-A

7430341 18.0176

Pig. 4 eohliesslioh appears to be on a roughly natural scale, in part geechnitten, a small speaker, at wel ~ ohem a dynamic cone loudspeaker 2 of the known Execution is built into a spherical housing 1.

This housing 5 dt open on the emission side and duroh one transparent cover 4 covered while it is in the back Extension passes into a pipe extension 3 which is closed at the rear end. The supply cord is dürru finned through this pipe socket. The in the housing 1 as can be seen, at This embodiment is enlarged by the interior of the pipe socket 3, resulting in the advantages mentioned above. The pipe socket 3 is designed as a circular cylinder; he could however also have e.g. an oval cross-sectional shape. The pipe socket could also consist of two semi-cylindrical shell halves be assembled and connected to the spherical housing 1 by special fastening means.

Expectations

Claims (7)

ItI ι ι. Expectations 1) Small loudspeaker with a housing that is closed on all sides except for the loudspeaker opening, characterized in that that the housing has a stem-shaped approach with such dimensions * that mer for fastening the loudspeaker (on a tripod or stand) or as a handle. 2) small loudspeaker according to claim 1, characterized in that the stem attachment on the back of the housing is arranged in the extension of the loudspeaker axis. 3) Kleinlautsprooher according to claim 1, characterized in that the stem approach on the underside de? Housing is arranged at an angle, in particular at right angles to the loudspeaker axis. 4} KleinladtSprecher according to claim l _t 2 or 3, characterized in that the electrical lead is arranged within the total Stitlansafczes (. 5) KL single speaker according to claim JL, 2 or 3, thereby characterized in that the supply cord is led out of the housing separately from the handle attachment. 7430341 03/18/76 6) Small loudspeaker according to claim I or the following «characterized in that the stem extension is tubular, closed at its free end and connected to the housing at its other end so old that the interior of the pipe extension increases the volume of air located behind the loudspeaker membrane. 7) small loudspeaker according to one of claims 1 to 6 thereby characterized in that the housing is spherical or cylindrical or in some other way la in relation to the loudspeaker axis is designed to be rotationally symmetrical. 7430341 03/18/76