Sub-woofer loudspeaker enclosure

Technical field

The invention is concerned with the formation of subwoofer speakers, especially with the ease of manufacturability of such boxes.

State of the art

According to the technique, it is known a pit housing to divide by a partition wall into two volumes, and to insert the speaker into the partition. Such an arrangement is known for example from EP 0,523,410th This font is also inferred that one of the volumes formed by the partition inside the box is provided with a so-called port, which is located in boxing housing and the outside air surrounding air exchange between the interior of the boxes housing and the box allows. An arrangement with two ports is shown for example in DE 3,410,134th Although the writings described so far show only the use of a loudspeaker in the partition wall, is known from US 4016953 a push-pull arrangement of speakers and EP 0379988 a push-pull arrangement in connection with a double-chamber known.

These writings discussed so far mainly deal with the effect of such boxes and therefore contain little or no information on their training. In view of the fact, however, that the partition wall carries at least one speaker, it can be said that such boxes must have a formed at least of two half-boxes housing. Based on the EP 0523410 arrangement shown, this means that the enclosed volume is formed by a down to the installation opening closed for the speaker box and that the partition wall after the speaker, etc. is mounted, forming means of the open volume of the trough-shaped hood covered is, the edges of the hood is screwed to the box or glued. A two-part boxes also housing DE shown 4,344,618th

Although this arrangement has three chambers or volumes, can be derived from this document well the preparation of such speakers with a arranged in the partition speaker arrangement. In addition, this document can be found in that complex-shaped boxes half-shells must be provided in order to form such a housing boxes.

In this context is also considered disadvantageous that the respective boxes shells to ensure the subsequent incorporation of speakers using separate tools have to be produced, which further increases the cost of production.

The invention is therefore based on the object to provide a subwoofer, which avoids under existing of art problems in manufacturing.

Summary of the Invention

This object is achieved by the features indicated in claim 1. Advantageous embodiments and developments of the invention are the claims 2-5 removed.

It's the boxes housing integrally formed and provided on its inner wall with a angeformeten guide frame, the speaker can form in that the equipped with the speaker, etc. partition is inserted into the chassis by a further known in boxing housing assembly opening. Since the partition wall is provided with a cover, when the cover plate is greater than the mounting aperture, closed with the Montageöffung reaching the end position of the partition wall in the guide frame.

Seals the cover plate assembly opening only partially ie not completely shut off, the then remaining opening can be used as a port. This will separate ports in boxing housing unnecessary.

If at least the covering is formed of metal, this cover panel can be used for heat dissipation. The latter is particularly advantageous when the dividing wall is also equipped with an amplifier unit.

The cover plate is provided with a contact strip for contacting the or the loudspeakers or of the amplifier unit, no further assembly opening in the housing boxes are no longer necessary, whereby the Abdichtaufwand is reduced.

Presentation of the figures

Show it:<dl id="dl0001"><dt>figure 1</dt><dd>a pit housing in section;</dd><dt>figure 2</dt><dd>a section AA of Figure 1; </dd><dt>figure 3</dt><dd>an acoustic module in side view,</dd><dt>figure 4</dt><dd>a combination of Figure 1 and Figure 3; and</dd><dt>figure 5</dt><dd>another combination according to FIG. 4</dd></dl>

Ways of carrying out the invention

1 shows, in a substantially closed somewhat rectangular formed enclosure (10), wherein the outer skin (11) of this housing (10) only by an assembly opening (12) and a channel-shaped port (13) is broken. Further, the inside of the box housing (10) of four tubular rim holes (14) is traversed, which contribute to the mechanical stability of the box housing (10).

Further, in the in figure 1 shown enclosure (10) is a slide-in frame (16) formed on the inner wall (15) of the housing which, like the left side of the drawing shows in Figure 1, has an approximately U-shaped profile. The right hand in the drawing Figure 1 is removed in that the insertion frame (16) ends where the outer skin (11) of the housing (10) having the assembly opening (12). The latter is essential to - as will be shown later - the speaker to complete.

The conditions previously shown in connection with Figure 1 are illustrated in Figure 2 further. Also is the view according to Figure 2, which shows a section AA shows according to Figure 1, can be removed, that the guide frame (16) on the two side faces 17.1 and 17.2 as well as on the end face (18) runs along the inner wall (16).

Just for completeness it should be noted that the enclosure (10) shown in Figure 1 and 2 can easily be produced from plastic by applying the Rotationssinterns or application of the blowing technique.

3 shows an acoustic module (19) is shown. This acoustic module (19) is essentially formed by a partition wall (20), with the partition wall (20) connected to the cover plate (21), a loudspeaker (23) and an amplifier unit (24). In the partition (20) has an opening (22) is formed, above which is mounted the speaker (23). The cooling body (25) of the amplifier unit (24) are connected to the cover plate (21) and (20), which is formed in the present embodiment to improve heat conduction of metal.

If the heat dissipation only plays a subordinate role or in another - not shown - exemplary embodiment, the use of an amplifier unit (24) is omitted, the cover plate (21) may also be formed of plastic and possibly a one-story unit with the partition (20 ) form.

Further, the cover plate (21) with connecting bar (26) for contacting the amplifier unit (24) is provided.

If now a fully tipped acoustic module (19) according to Figure 3 with the peripheral edge (27) of the partition (20) through the installation opening (12) Figure 1 into the chassis (16) is pushed, an installation situation is achieved, which shown in the figure 4 is. If the acoustic module (19) has assumed its end position in the enclosure (10), the cover plate (21) closes the assembly opening (12). In addition, in this end position into a closed volume (28.1) and an open volume (28.2), the interior of the box housing (10), because the peripheral edge (27) of the partition (20) is mounted in the guide frame (16), subdivided. For completeness it should be noted that the peripheral edge (27) of the partition (20) with a seal (29) is provided in order to ensure mutual sealing of the two volumes (28.1) and (28.2). It is also provided between the cover plate (21) and the outer skin (11) of the box housing (10) a seal (29).

Figure 5 shows a comparison with FIG 4 slightly modified version. According to Figure 5, the port (13) is not through the outer skin (11) of the boxes housing itself out, but in the cover plate (21) is formed. Again, the port (13) is configured tubular.

If no tubular port (13) is necessary, the required in any case port aperture can also be by means of a bore in the cover plate (21) or realized in that the cover plate (21) the assembly opening (12) in the enclosure (10) is not completely covered.