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BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
cabinet for consumer electronics devices with loudspeakers. Examples of such devices are audio
devices such as CD players, tape recorders, radios and television receivers. In particular, the
invention relates to a device in which the loudspeakers form an integral part of the device.
In known devices of this type, the cabinet is formed as an integral part for housing electronic and
mechanical components as shown in FIGS. 1a and 1b. The electrical components in particular
consist of a power supply and a signal processing circuit. The mechanical component may be a
tape recorder and / or a CD player. Acts as a structural element suitable for arranging all
required parts for the device. In addition, the housing protects the user from dangerous electrical
shocks and protects the components from damage from external influences such as dirt or
moisture. Finally, the cabinet allows to design the device, i.e. shape, size and appearance. For all
these reasons, the cabinet is a vital part of the device and may also determine commercial
Generally, the cabinet is made of plastic by injection molding. The known cabinet contains all the
components, in particular the loudspeakers. It is often necessary to provide different models of
different designs and sizes for different markets for marketing. Thus, it is necessary to produce
different types of cabinets or different designed loudspeaker boxes for devices with different
types of loudspeakers. Even though the mechanical and electrical components are identical. This
type of diversification incurs significant costs due to the different types required to manufacture
cabinets for different models.
Starting from this, the invention proposes a cabinet for an electronic device with loudspeakers
for audio reproduction. Audio devices nowadays usually have two loudspeakers for stereo
reproduction of sound. However, the number of loudspeakers is not critical to the invention. The
cabinet comprises a main cabinet for housing the electrical and mechanical components of the
electronic device, and furthermore, a loudspeaker coupled to the outside of the main cabinet in a
non-separable manner separate from the main cabinet Have a cabinet for the
Thus, the invention makes it possible to design audio devices with different appearances without
the need for a completely separate cabinet. Furthermore, the invention proposes to use a
standardized main cabinet in order to make a more cost-effective production.
SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a
cabinet using standardized main cabinets which can provide different models of audio devices.
SUMMARY OF THE INVENTION In the preferred embodiment of the present invention, vibration
damping means are disposed between the main cabinet and the loudspeaker cabinet.
The vibration damping means improve the sound quality, but also prevent dust or moisture from
entering the loudspeaker cabinet.
If one loudspeaker requires a different circuit than other loudspeakers, it is also possible to
arrange the electronics in the loudspeaker cabinet. This allows for a higher degree of
standardization including not only the cabinet itself but also the electrical components, in
particular the electrical components associated with sound reproduction.
In yet another embodiment of the present invention, the main cabinet is provided with pressing
means for pressing the loudspeaker cabinet against the main cabinet, thereby fixing the tight
abutment of the loudspeaker cabinet in the main cabinet .
This advantage can be obtained if the pressing means press the loudspeaker mainly against the
vibration damping means.
It will be appreciated that although the invention may be implemented as a portable audio
device, the scope of the invention is not limited to this type of device.
The invention can be applied to any consumer electronic product equipped with a loudspeaker,
for example a television receiver.
DETAILED DESCRIPTION OF THE INVENTION FIG. 1a shows a portable audio device 1 of the
conventional type, for example with a radio receiver, a tape recorder and a CD player.
The components are contained in a cabinet 2 made of injection molded plastic. The apparatus 1
is provided with two sets 3a, 3b of loudspeakers on the left and right sides of the cabinet 2 for
stereo reproduction of sound. A comparison of FIGS. 1a and 1b shows that the loudspeaker
cabinet of the device shown in FIG. 1b is larger than that shown in FIG. 1a. For the user, the
design shown in FIG. 1b is better than that shown in FIG. 1a even though the two devices are
technically identical except for the loudspeaker and / or the loudspeaker cabinet. Gives the
impression of being powerful. This type of differentiation is often required for marketing
purposes so that manufacturers can satisfy various segments of the market. However, this type of
differentiation adds cost to various types of cabinets.
Figures 2a and 2b show the portable audio device 1 according to the invention in a front view.
The cabinet of the device comprises a main cabinet 4, which is produced in a conventional
manner, for example by injection molding of plastic material. The main cabinet 4 has a front wall
6 and a rear wall 7 (FIG. 2b). The front and back walls are joined by side walls 8 (FIG. 2 b). Two
loudspeaker cabinets 9 are mounted on the main cabinet 4 on each side of the main cabinet 4.
Importantly, the loudspeaker cabinet 9 is a separate part from the main cabinet and is attached
to the main cabinet by means of clips, screws or any other technique known in the art for joining
plastic moldings It is that you are. Each loudspeaker cabinet 9 contains a loudspeaker 11 for
reproducing an audio signal reproduced by a CD player, a tape recorder or a radio receiver
incorporated in the main cabinet 4. For simplicity, only the CD door 12 is shown in FIG. 2a. The
electrical connection between the loudspeaker 11 and the signal processing and amplification
circuit is formed by a conventional plug connection or simply by a wire passing through the side
wall of the main cabinet 4.
FIG. 2 c shows the enlarged detail of FIG. 2 b, in particular the contact area between the
loudspeaker cabinet 9 and the main cabinet 4. Between the plastic parts of the two cabinets 4, 9,
a vibration damping material 13, for example a rubber gasket, is provided. The cushioning
material 13 prevents the transmission of vibrations from the loudspeakers to the main cabinet.
The rubber gasket or vibration damping material 13 is a circular section and is accommodated in
the semicircular groove 14 of the main cabinet 4. The front end 16 of the loudspeaker cabinet 9
is also provided with another semi-circular groove 17 and the rubber gasket 13 is firmly held in
the grooves 14 and 17. A projection 18 extends the front wall 6 and the back wall 7 of the main
cabinet 4. The loudspeaker cabinet is tightly fitted between one protrusion 18 of the front wall 6
and the rear wall 7 as shown in FIG. 2b. Thus, there is no visible gap between the main cabinet 4
and the loudspeaker cabinet 9. The fastening means connecting the main cabinet 4 and the
loudspeaker cabinet 9 are not shown and are conventional types such as screws, clips, glues and
the like. The fastening means are arranged such that the user can not remove the loudspeaker
cabinet 9 from the main cabinet 4.
The cross section of the rubber gasket can have different shapes as shown in FIG. 2c. Depending
on the need to avoid sound leakage and / or the need to eliminate cabinet vibration, the rubber
gasket 13 may or may not be attached to a particular type of cabinet.
If the reproduced sound is loud and contains low frequencies, excessive vibration may interfere
with the normal operation of the CD player built into the main cabinet. The vibration damping
rubber gasket 13 reduces the transmission of the vibrations generated by the loudspeaker to the
main cabinet. At the same time, the rubber gasket 13 improves the sound quality by its ability to
dampen parasitic vibrations.
Figures 3a and 3b show different types of portable audio devices according to the invention at
different scales. The main cabinets 4 of the first and second embodiments of the present
invention should have the same size and shape, but the loudspeaker cabinets are quite different.
In comparison to the first embodiment shown in FIGS. 2a and 2b, each loudspeaker cabinet 9
contains one additional loudspeaker 19. Thus, the second embodiment shown in FIGS. 3a and 3b
has a completely different appearance, apart from different sound characteristics.
It is clear that the appearance or design of the audio device can be changed and adapted to
different market demands without changing the number or type of loudspeakers.
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