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DESCRIPTION JP3169829

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DESCRIPTION JP3169829
Abstract: [Problem] To provide an enhanced passive radiator that improves the low frequency
performance of a speaker. The reinforced passive radiator includes a frame (9), a holding side
(10) and a vibrating membrane (11), and the vibrating membrane and the frame are connected
and fixed by the holding side, and the outer wall of the vibrating membrane and the frame A
damper 8 is provided between them, and the vibrating membrane is a high strength vibrating
membrane which is not easily deformed. The reinforced passive radiator improves the internal
structure, significantly increases the vibration area participating in the generation of sound, and
makes the vibration structure more fruitful than traditional passive radiators. This significantly
reduces the operating frequency of the enhanced passive radiator and reduces distortion, making
the low frequency representation of the speaker better. [Selected figure] Figure 3
Reinforced passive radiator
[0001]
The present invention relates to a type of passive radiator, and more particularly, to a reinforced
passive radiator that employs a high strength vibrating film that is resistant to deformation and
that significantly improves the low frequency performance of the speaker.
[0002]
A speaker is a conversion facility that converts electrical energy into sound.
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Referring to the traditional speaker structure shown in FIG. 1, a typical speaker includes a
magnet 1, a U-shaped yoke 2 fitted around the magnet, a conductive disc 3 above the magnet 1,
a magnet 1 and the perimeter of the magnetic disc 3. Surround the voice coil 4. The magnet 1,
the U-shaped yoke 2, the magnetic flux distributor 3 and the voice coil 4 described above are all
mounted at the center position of the frame 5. The upper edge of the voice coil 4 is connected to
the thin diaphragm 6, and the thin diaphragm 6 and the frame 5 are connected by the holding
side 7. The voice coil 4 is connected to the frame 5 by a ring-shaped damper 8. When different
electron energy is transmitted to the voice coil 4, the energy generated by the voice coil 4
interacts with the magnetic field of the magnet 1, and by such interaction, the thin diaphragm 6
vibrates to generate a change in air sparse density. To make a sound.
[0003]
Passive radiators do not themselves include a drive system. When the active speaker operates, it
compresses air in the chamber and is driven to convert heat energy and kinetic energy generated
by the compressed air into sound signals during vibration in the process of energy conversion of
electricity and sound of the active speaker. The internal structure of such passive radiators is
similar to a standard loudspeaker.
[0004]
Referring to the conventional passive radiator structure shown in FIG. 2, a typical passive
radiator includes a frame 9, a holding side 10, a vibrating membrane 11 with relatively weak
strength, and a weight 12. Among them, the structure of the frame 9 is similar to that of the
frame 5 described above, and the vibrating membrane 11 and the frame 9 are connected by the
holding side 10. A weight 12 is provided at an intermediate position of the vibrating membrane
11. As can be seen from FIG. 2, no voice coil, damper or other parts are provided in a traditional
passive radiator, and the strength of the vibrating membrane also needs to be lower than in the
speaker.
[0005]
With the background of the current technological advances, everything is developing towards
smaller and smaller. However, small volume or small area speakers are affected by physical
characteristics, and their low frequency performance is degraded. Also, in an era where energy
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2
saving is required, the speaker has a large amount of power wasted on the low frequency due to
the influence of the resistance characteristic at the extremely low frequency, and this makes it
possible for the low frequency and the portion where the voice is not large in advance. There is
no doubt that more power can be saved by the filtering operation. Based on the situation
described above, how to save power on the one hand and reduce the area of the speaker on the
other hand has become an important research topic on current speaker design.
[0006]
In view of the current lack of technology, the object of the present invention is to provide a type
of enhanced passive radiator. The enhanced passive radiator employs a high strength vibrating
film that is resistant to deformation and significantly improves the low frequency performance of
the speaker.
[0007]
In order to achieve the above-mentioned object, the present invention adopts the following
technology.
[0008]
The enhanced passive radiator of the present invention includes a frame, a holding side and a
vibrating membrane.
The vibrating membrane and the frame are connected by the holding side.
[0009]
The vibrating membrane is a high strength vibrating membrane, and a damper is provided
between the outer wall of the vibrating membrane and the frame.
[0010]
Preferably, a chamber for holding a weight is formed at an intermediate position of the vibrating
membrane, and the weight is placed inside the chamber, or the vibrating membrane and the
weight are integrally formed.
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[0011]
Preferably, the damper is in the form of an annulus.
[0012]
The reinforced passive radiator provided by the present invention significantly improves the
vibration area participating in the generation of sound by improving the internal structure, and
makes the vibration structure more solid than the traditional passive radiator.
This significantly reduces the operating frequency of the enhanced passive radiator and reduces
distortion, making the low frequency representation of the speaker better.
[0013]
It is an internal structure display figure of the traditional speaker.
It is an internal structure display figure of a traditional passive radiator.
It is an internal structure display figure of a strengthening type passive radiator of the present
invention. FIG. 5 is an internal structural view of another embodiment of the reinforced passive
radiator of the present invention;
[0014]
In order to explain in detail the technical contents, the structural features and the purpose to be
achieved of the present invention, the embodiments will be described below in combination with
the drawings. The directional terms mentioned in the present invention, for example, upper,
lower, front, rear, left, right, inside, outside, side, etc., are only directions referring to the attached
drawings. Thus, the directional terms used are used to describe and understand the present
invention, and not to limit the present invention.
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[0015]
In the present invention, the larger the vibration area of the sound, the lower the frequency
becomes in the phonetic law, and the lower the vibration velocity, the lower the frequency in the
phonetic law, and the more the vibration structure becomes, the smaller the distortion becomes.
According to experimental results, the improvement of the internal structure of the passive
radiator makes the bass sound effect of the speaker using the enhanced passive radiator better.
[0016]
Thereby, as shown in FIG. 3, in the reinforced passive radiator provided by the present invention,
the improvement of the main technology thereof uses a high-strength vibrating film which is not
easily deformed into the vibrating film 11, preferably, the vibration The film 11 is a high strength
metal vibrating film or a high strength plastic vibrating film, and the vibrating film 11 and the
frame 9 are connected by the holding side 10.
However, as a difference from a conventional passive radiator, a chamber 13 in which a weight
can be placed is formed at an intermediate position of the vibrating membrane 11, the weight 12
is placed inside the chamber 13, and a constant air gap is retained in the middle ing. In addition,
an annular wave-like damper 8 is further installed between the outer wall of the chamber 13 and
the frame 9.
[0017]
In this reinforced passive radiator, a high-strength vibrating film that is difficult to deform is
used, and a damper is installed on the outer wall of the chamber where the weight is placed, and
connected to the frame, whereby the vibration area participating in sound generation It is
significantly enlarged and the vibrating structure is clearly more fruitful than traditional passive
radiators. Thus, the operating frequency of the enhanced passive radiator is clearly lowered and
the distortion is reduced, and the low frequency representation of the speaker can be better.
According to the laws of phonetics, when the bass is lower, stronger and to a certain extent, the
speech expression becomes more rich and colorful. Thus, many consumers meet the demand for
more bass for lack of bass for speaker products.
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[0018]
FIG. 4 shows another embodiment of the reinforced passive radiator provided by the present
invention. In the present embodiment, a high strength vibration film which is not easily deformed
as in the previous embodiment is used, and an annular wave-like damper 8 is disposed between
the outer wall of the high strength vibration film and the frame 9. However, as a difference from
the previous embodiment, the vibrating membrane and the weight adopt an integral molding
design, and the chamber in the previous embodiment is not provided. The vibrating membrane
14 and the weight in this embodiment are integrally formed, which is less likely to be deformed,
and the vibrating structure is further realized, whereby the low frequency performance is further
improved.
[0019]
This enhanced passive radiator forms a combination of bass enhancement with the speakers.
Specifically, the bass enhancement combination uses a single speaker or a plurality of single
speakers, utilizes the back waves of the single speakers, drives the reinforced passive radiator,
and jointly works with the speakers to produce a vibration area of the speakers. It refers to
increasing and pushing more air, thereby enhancing the strength of the bass in the speaker box
and causing the speaker, which is relatively short of bass, to generate a lower frequency bass.
Besides, the bass enhancement combination can effectively reduce the speaker box structure
which originally requires relatively large volume.
[0020]
The reinforced passive radiator of the present invention significantly expands the vibration area
participating in the generation of sound by improving the internal structure, and makes the
vibration structure more solid than the traditional passive radiator. This significantly reduces the
operating frequency of the enhanced passive radiator and reduces distortion, making the low
frequency representation of the speaker better. In the technical field to which the present
invention belongs, there has been no creation or public use of the same or similar products as the
present invention so far, the present invention is improved in function, and thus the present
invention has novelty and inventive step.
[0021]
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What has been described above is merely an example of the present invention and does not limit
the scope of implementation of the present invention, and any equivalent changes and
modifications that can be made based on the claims of the present invention are all claimed. Shall
fall within the scope of the coverage of
[0022]
8 Damper 9 Frame 10 Holding Side 11 Vibrating Film 12 Weight 13 Chamber
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