Speaker assembly with front panel

Abstract

The invention relates to a loudspeaker unit (10), which includes a housing (12) that has a peripheral housing edge (14) and a front element (20), and a loudspeaker, which is arranged inside the housing (12), wherein the loudspeaker has an in particular dome-shaped diaphragm, which is arranged behind the front element (20). In order to improve the loudspeaker unit (10) having the loudspeaker and the housing (12), according to the invention, the front element (20) has a multiplicity of passage openings (26), and the individual passage openings (26) are formed in the manner of a labyrinth.

Claims

1. A speaker assembly comprising: an enclosure having a peripheral rim and a front panel, and a loudspeaker inside the enclosure and having an in particular cup-shaped diaphragm behind the front panel, the front panel being formed in front of the speaker with a plurality of longitudinally extending, parallel, and transversely spaced bars having side faces forming a multiplicity of longitudinally extending passage openings of labyrinthine section, whereby a foreign object from outside must pass front-to-back through one of the passages with two direction changes to enter the enclosure.

2. The speaker assembly according to claim 1, wherein the side faces are profiled side surface.

3. The speaker assembly according to claim 2, wherein the bars each have their profiled side sur faces on both sides.

4. The speaker assembly according to claim 3, wherein two adjacent bars each have a zipper-like structure on their mutually facing side sur faces.

5. The speaker assembly according to claim 2, wherein all bars of the front panel are of identical cross section.

6. The speaker assembly according to claim 1, wherein the loudspeaker is a dynamic moving-coil loudspeaker.

7. The speaker assembly according to claim 1, wherein each passage is formed between a pair of the side faces of respective flanking bars, one of the side faces of each pair being formed with two transversely projecting vanes spaced apart front-to-back and the other side face of each pair projecting transversely and spacedly between the two respective vanes of the respective pair.

Description

LIST OF FIGURES

(1) The invention is described and explained in more detail in the following on the basis of the embodiment illustrated in the drawing. In the figures:

(2) FIG. 1 is a plan view onto the speaker assembly according to the invention,

(3) FIG. 2 is a cross section along the line A-A of the speaker assembly according to FIG. 1, and

(4) FIG. 3 shows a detail view of the bars of the front panel of the speaker assembly according to FIG. 2.

WAYS OF REALIZING THE INVENTION

(5) The speaker assembly 10 according to the invention is illustrated schematically in FIGS. 1 to 3. The speaker assembly 10 has an enclosure 12 with a peripheral rim 14. The enclosure edge 14 has a fastening flange 16 in sections. The enclosure edge 14 may be fastened on a suitable component by this fastening flange 16, in order to mount the speaker assembly 10 at a predetermined location. The enclosure 12 has a circular front panel 20 on the front side.

(6) The front panel 20 has a multiplicity of bars 22 in the present embodiment. The bars 22 each run from the edge of the front panel 20 to a central slat 24. The central slat 24 runs through the central point of the front panel 20 and is used for fastening the individual bars 22. The bars 22 run parallel to one another and have a predetermined mutual spacing. In this manner, the bars 22 form slit-shaped passage openings 26.

(7) A loudspeaker 30 is located in the interior of the enclosure 10. In the present embodiment, the loudspeaker 30 is a dynamic moving-coil loudspeaker, as known from the prior art. In principle, other types of loudspeakers 30 may also be used in the speaker assembly 10 according to the invention. The loudspeaker 30 has a cup-shaped upwardly concave diaphragm 32. This diaphragm 32 is below the front panel 20. In order to protect the diaphragm 32 from damage, the passage openings 26 are each constructed in the front panel 20 in the manner of a labyrinth (cf. FIGS. 2 and 3). In the present embodiment, the individual bars 22 have identical cross sections. The bars 22 each have a right side surface 40 and a left side surface 42. In the present embodiment, the right side surface 40 has a projecting web 44, 46 at its upper and lower edges. Each such pair of projecting webs 44, 46 forms a central groove 48 in the right side surface 40 as a result. The left side surface 42 has a single projecting web 50 at the center. The central web 50 of the left side surface of each bar 22 projects somewhat into a respective groove 48 of the right side surface 40 of an adjacent bar 22. A zipper-like structure is formed as a result. A labyrinthine construction of the passage openings 26 results due to this zipper-like structure.

(8) The labyrinthine structure depicted here on the one hand allows the sound waves created to be optimally reflected and not be swallowed by the front panel 20, so that a good sound result is possible, as before. On the other hand, the diaphragm 32 of the loudspeaker 30 is adequately protected from penetrating foreign objects. Foreign objects coming from outside must first get through the labyrinthine structure before they can impact the diaphragm 32. When passing the labyrinthine structure, the speed of the foreign objects is braked to such an extent, however, that they can no longer do damage when impacting against the diaphragm 32. A large part of the foreign objects therefore may be completely prevented from penetrating into the interior of the enclosure 12 by the labyrinthine structure.

(9) In contrast to the embodiment illustrated here, other labyrinthine structures of the passage openings 26 could also be realized. Alternatively or additionally thereto, the front panel 20 may be constructed in a lattice-shaped manner, so that punctiform passage openings 26 would be formed.