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JP2017212713

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DESCRIPTION JP2017212713
Abstract: To provide a speaker capable of reducing the overall thickness due to the limitation of a
magnetic circuit system and a vibration space. A voice diaphragm (171) and a voice coil (173)
are provided. The voice diaphragm 171 has a first portion 1711 for producing vibration and a
second portion 1715 installed in the housing space 10, which are fixed to the housing 11. The
second portion 1715 divides the housing space 10 into a first housing space for housing the
magnetic circuit system 15 and a second housing space for housing the voice coil 173, and
further to the first portion 1711, the magnetic circuit system 15. Through holes 1713 facing the
magnetic circuit system 15 are provided. [Selected figure] Figure 2
スピーカー
[0001]
The present invention relates to the field of electricity and voice conversion, in particular to thin
speakers.
[0002]
In recent years, with the development of science and technology, in particular, with the rapid
development of mobile communication technology, many mobile electronic devices are
increasingly appearing in the daily life of people, for example, smart phones, tablet PCs, notebook
PCs and multifunctional media players It became an essential daily necessities for people.
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1
These mobile electronic devices are an integral part of the audio playback device inside, and the
level of voice quality directly affects the user experience when the user uses these mobile
electronic devices.
[0003]
The speaker, as a device for reproducing audio, has a structural design that directly affects the
quality of audio reproduction. The speaker in the related art usually comprises a voice
diaphragm, and the dome of the voice diaphragm covers the magnetic circuit system, and it is
necessary to previously open the vibration space between the voice diaphragm and the magnetic
steel of the magnetic circuit system.
[0004]
However, the overall thickness of the speaker is limited by the magnetic circuit system and the
vibration space and can not be reduced.
[0005]
For this reason, in order to solve the above-mentioned problem, it is necessary to provide a new
speaker.
[0006]
SUMMARY OF THE INVENTION The object of the present invention is to provide a loudspeaker
that solves the technical problem that the overall thickness can not be reduced due to the
limitation of the magnetic circuit system and the vibration space in the conventional loudspeaker.
[0007]
The following speakers were designed to solve the above technical problems.
The speaker includes a housing having a housing space, a magnetic circuit system housed in the
housing space, and a vibration system housed in the housing space and driven by the magnetic
circuit system to vibrate and produce vibration. The vibration system includes a voice diaphragm
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and a voice coil for driving the voice diaphragm to vibrate, the voice diaphragm being fixed to the
storage body, a first portion for producing vibration, and the first portion. And a second part
disposed between the container and the storage body, one end of the second part being
connected to the first part, and the second part being the storage space, the magnetic circuit
system And a second accommodation space for accommodating the voice coil, wherein the first
accommodation space and the second accommodation space are not connected to each other.
The first portion of the voice diaphragm, so as to avoid the magnetic circuit system, a through
hole facing the magnetic circuit system is installed.
[0008]
Preferably, the projection onto the voice diaphragm along the direction of vibration about the top
surface of the magnetic circuit system is in the through hole.
[0009]
Preferably, one end of the second portion close to the first portion is connected to the lower
surface of the first portion.
[0010]
Preferably, the second portion is curvedly extended from the edge of the through hole of the first
portion and integrally formed.
[0011]
Preferably, the second portion and the first portion are adhesively fixed by an adhesive.
[0012]
Preferably, in the second portion, the housing includes a bottom wall, and the second housing
space formed of the housing, the second portion and the first portion is a sealed space. One end
away from the first part is connected to the bottom wall of the receptacle.
[0013]
Preferably, the first portion in the second portion is a space in which the housing, the magnetic
circuit system, and a second housing space including the second portion and the first portion are
sealed. One end away from the magnetic circuit is connected to the magnetic circuit system.
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[0014]
Preferably, the top surface of the magnetic circuit system does not exceed the top surface of the
first portion of the voice diaphragm.
[0015]
Preferably, the first portion includes a cone portion, a folding ring positioned around the cone
portion, and a connecting portion which is extended from the folding ring to the outside and
fixed to the storage body, and the through hole is It is installed in the cone section.
[0016]
Preferably, the second portion is a hollow structure whose peripheral portion is sealed.
[0017]
Compared to the related art, the speaker according to the present invention installs a through
hole at a position where the voice diaphragm and the magnetic steel face each other, and adds a
second part, and when the speaker operates by this through hole It is possible to prevent the
voice diaphragm and the magnetic steel from colliding.
As a result, the thickness of the speaker mainly becomes a vibration space, and is not limited to
the thickness of the magnetic steel, making the speaker thinner and further improving the
performance of the speaker.
[0018]
It is a perspective view showing composition of a 1st example of a speaker concerning the
present invention.
FIG. 1 is an exploded view of a first embodiment of a loudspeaker according to the present
invention.
It is sectional drawing of the AA in FIG.
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It is an exploded view of a 2nd example of a speaker concerning the present invention.
FIG. 6 is an exploded view of the second embodiment of the speaker according to the present
invention seen from another angle.
It is an exploded view of a 3rd example of a speaker concerning the present invention.
[0019]
The following clearly and completely describes the technical solutions in the embodiments of the
present invention with reference to the drawings in the embodiments of the present invention,
and the embodiments clearly described are merely a part of the embodiments of the present
invention. It is just not the whole example.
Based on the embodiments of the present invention, all other embodiments obtained when a
person skilled in the art does not perform creative work are all included in the protection scope
of the present invention.
[0020]
As shown in FIGS. 1 to 3, the speaker 1 provided by the present invention includes a housing 11
having a housing space 10, a frame 13 attached above the housing 11, and a magnet housed in
the housing space 10. It comprises a circuit system 15 and a vibration system 17 housed in the
housing space 10 and driven by the magnetic circuit system 15 to produce vibration.
The storage body 11 includes a bottom wall 111.
[0021]
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The vibration system 17 includes a voice diaphragm 171 and a voice coil 173 for driving and
vibrating the voice diaphragm 171, and the outer peripheral edge of the voice diaphragm 171 is
sandwiched between the storage body 11 and the frame 13, thereby Acts to be fixed.
In another embodiment, the voice diaphragm 171 may be directly fixed to the housing 11
without installing the frame 13.
The magnetic circuit system 15 includes magnetic steel 151, and the voice diaphragm 171 is
installed on the magnetic steel 151.
[0022]
The voice diaphragm 171 is fixed to the storage body 11 and includes a first portion 1711 for
producing vibration and a second portion 1715 installed between the first portion 1711 and the
storage body 11. Equipped with
The second portion 1715 is a hollow structure whose peripheral portion is sealed, one end of the
second portion 1715 is connected to the lower surface of the first portion 1711, and the storage
space 10 is used as the magnetic circuit system 15. The first housing space 101 for housing and
the second housing space 103 for housing the voice coil 173 are partitioned, and the first
housing space 101 and the second housing space 103 are not connected to each other, and the
magnetic steel 151 is The voice coil 173 is driven to vibrate in the second accommodation space
103. In the first portion 1711 of the voice diaphragm 171, a through hole 1713 facing the
position of the magnetic steel 151 is installed so as to avoid the magnetic steel 151. The first
portion 1711 includes a cone portion 1716, a folding ring 1717 positioned around the cone
portion, and a connection portion 1718 which extends outward from the folding ring 1717 and
is fixed to the storage body 11; A through hole 1713 is installed in the cone 1716.
[0023]
The upper surface of the magnetic circuit system 15 has a projection on the voice diaphragm
171 in the vibration direction and is located in the through hole 1713. Thus, when the speaker 1
operates, the voice diaphragm 171 is the magnetic It is ensured that the steel 151 does not
collide, and preferably, the top surface of the magnetic circuit system 15 does not exceed the top
surface of the first portion 1711 of the voice diaphragm 171.
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[0024]
In the present embodiment, the second portion 1715 connects the edge of the through hole
1713 to the bottom wall of the housing 11, and the second portion 1715 is formed by the voice
coil 173 and the magnetic steel 151. Installed around the
Specifically, the first portion of the second portion 1715 is formed such that the second housing
space 103 including the housing 11, the second portion 1715, and the first portion 1711 is a
sealed space. One end close to the portion 1711 is connected to the lower surface of the first
portion 1711, and one end of the second portion 1715 away from the first portion 1711 is
connected to the bottom wall 111 of the housing 11. In another embodiment, in the second
portion, the second housing space 103 including the housing 11, the magnetic circuit 151, the
second portion 1715, and the first portion 1711 is a sealed space. One end away from the first
portion 1711 may be connected to the magnetic steel 151.
[0025]
In the present embodiment, the first portion 1711 and the second portion 1715 are adhesively
fixed by an adhesive.
[0026]
As shown in FIGS. 4 and 5, the voice diaphragm 271 includes a first portion 2711 and a second
portion 2715 disposed in the housing space 20.
The first portion 2711 of the voice diaphragm 271 is provided with a through hole 2713 facing
the position of the magnetic steel 251 in order to avoid the magnetic steel 251. One end of the
second portion 2715 away from the first portion 2711 is connected to the bottom wall 211 of
the storage body 21. Of course, one end of the second portion 2715 away from the first portion
2711 may be sealingly connected to the magnetic steel 251.
[0027]
In the present embodiment, the second portion 2715 is curved and extended from the edge of
the through hole 2713 and integrally formed.
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[0028]
The first part 2711 and the second part 2715 are made in one piece to further improve the
connection and sealing effect between them, and that there is a large amount of fit and clearance
near the voice cavity. Prevents audio leakage and further improves the speaker's function.
[0029]
As shown in FIG. 6, the magnetic circuit system 35 includes a magnetic steel 351 and an
electrode core 353, and the electrode core 353 covers the top surface of the magnetic steel 351.
[0030]
An electrode core 353 manufactured from a magnetically conductive material is added to
eliminate the magnetic leak phenomenon of the magnetic steel 351 and to effectively shield the
magnetic field, thereby reducing the magnetic field strength of the surface of the housing 31.
Effectively reduce the product's magnetic leakage.
[0031]
Compared to the related art, the speaker according to the present invention installs a through
hole at a position where the voice diaphragm and the magnetic steel face each other, and adds a
second part, and when the speaker operates by this through hole It is possible to prevent the
voice diaphragm and the magnetic steel from colliding.
As a result, the thickness of the speaker mainly becomes a vibration space, and is not limited by
the thickness of the magnetic steel, making the speaker thinner and further improving the
function of the speaker.
[0032]
Although the above are only embodiments of the present invention, those skilled in the art may
further improve without departing from the inventive idea of the present invention, but any of
these improvements are included in the protection scope of the present invention. Be
[0033]
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Reference Signs List 1 speaker 10, 20 accommodation space 101 first accommodation space 103
second accommodation space 11, 21, 31 accommodation body 111, 211 bottom wall 13 frame
15, 35 magnetic circuit system 151, 251, 351 magnetic steel 17 vibration system 171 , 271
voice diaphragm 1711, 2711 first portion 1713, 2713 through hole 1715, 2715 second portion
1716 cone portion 1717 folding ring 1718 connecting portion 173, 273 voice coil 353 electrode
core
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