JP2010166144

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DESCRIPTION JP2010166144
To provide a structure of a speaker. SOLUTION: The structure of a speaker is composed of one
cone holder, one hanging side and one diaphragm, and among them, the periphery of the
diaphragm is sealed at the edge of the opening of the cone holder, And one placement zone is
located inside the opening of the cone holder and the suspension is placed between the
diaphragm and the placement zone of the cone holder so that the audio current signal is in the
cone holder The voice coil outputs an audio signal and is linked to the diaphragm to generate the
vibration and hence the sound, and the present invention is based on the design of the
suspension side. When the diaphragm vibrates up and down, distortion can be reduced more
smoothly, and the vibration is more resistant than the traditional structure. Make it possible not
to. [Selected figure] Figure 2A.
Speaker structure
[0001]
The present invention relates to the structure of a speaker, and more particularly to a structure
of a speaker capable of effectively reducing distortion and allowing the upper and lower
vibrations to progress more smoothly.
[0002]
The principle of operation of the speaker is based on Fleming's left hand rule, that is, a voice coil
through which current passes is placed in a magnetic field, and the motion is received by
receiving the force. An electric voice signal member that generates air, and in turn interlocks the
diaphragm to generate air, generates electrical sound, converts an electrical signal to mechanical
energy, and promotes air, and thus generates audio. For example, the task of a speaker is to
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convert an audio power value signal within a certain range into an audible voice with low
distortion and sufficient sound pressure through energy conversion.
[0003]
A commonly used speaker is a dynamic speaker (Moving-coil speaker), and the dynamic speaker
includes a magnetic circuit module (permanent magnet, core pole, magnetic conductive plate), a
diaphragm module (paper cone, voice coil) and the like. It consists of three parts such as a
supporting auxiliary module (spider, cone holder, pad side), among which the voice coil is
directly fixed to the diaphragm, and after the voice current signal passes through the voice coil,
in the permanent magnetic field When the coiled cylindrical coils are connected to each other
and the coil is driven by the signal current, the voice coil generates vibrations and interlocks the
diaphragm to generate vibrations and thus the sound. Occur.
[0004]
And the big difference between a dynamic speaker (Moving-coil speaker) and a general speaker
is in the distinction of the diaphragm, and the edge of the speaker's diaphragm is generally above
the elastic medium (folded ring and spider) (eg large diameter bass Fixed on the unit), the
diaphragm is generally in the shape of a cone and the elastic medium provides the vibration of
the vibrating system, as can be seen from FIGS. 1A and 1B, in the dynamic speaker the edge of
the diaphragm 1 Directly fixed on the frame of the drive unit, the diaphragm 1 comprises
laterally oriented hanging edges 2 and the vibration system is provided completely by the
stretching and contraction of the material of the diaphragm 1 itself and the deformation of the
suspension edges 2 , And therefore moving coil drive The selection of the material of the
diaphragm 1 and the design of its shape have a very large influence on the final voicing quality
of the unit, so that some of the vibrations when the suspension side 2 on the diaphragm 1
vibrates up and down The corrugation can create cancellations and can not produce a perfect
sound, causing distortion.
[0005]
It can be appreciated from this that the conventional and current methods described above are
not really good designs and need to be improved.
[0006]
The inventor of the present invention intends to further improve and innovate in view of the
disadvantages of the respective items generated by the above-mentioned conventional method,
and finally, after years of hard work on loneliness and intensive research The structure of the
speaker of the present invention is successfully studied and completed.
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[0007]
An object of the present invention is to provide a structure of a speaker, which can reduce
distortion more smoothly by vibrating the voice coil up and down when the voice coil generates
vibration and can provide more resistance than the traditional structure. Further, the present
invention provides a speaker structure that can be further eliminated.
[0008]
A speaker structure achieving the object of the invention described above comprises one cone
holder and one diaphragm module, among which the diaphragm modules are joined to each
other with the cone holder and the diaphragm module is one Comprising two hanging sides and
one diaphragm, wherein the periphery of the diaphragm is sealed at the edge of the opening of
the cone holder and the one storage at the inside of the opening of the cone holder A zone is
installed, and the suspended side is vertically connected between the diaphragm and the
placement zone of the cone holder, so that after the voice current signal is distributed to the
voice coil inside the cone holder The voice coil generates vibration and interlocks the diaphragm
to generate vibration and thus the sound The suspended side allows the diaphragm to vibrate up
and down more smoothly and reduce distortion as the voice coil produces vibrations, and the
vibration has less resistance than traditional structures as the voice coil produces vibrations. To
be possible.
[0009]
The structure of the loudspeaker provided by the present invention has the following advantages
when compared with other conventional techniques.
[0010]
1.
According to the structure of the speaker of the present invention, due to the installation position
of the suspension side, the vertical vibration can progress more smoothly and the distortion can
be reduced more, and the vibration does not have resistance more than the traditional structure.
It is a thing.
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[0011]
2.
The structure of the loudspeaker according to the invention is such that the mass of the
suspension can be neglected and the highest sound pressure efficiency can be achieved under
the same dimensional constraints.
[0012]
It is an exploded view of the part of the conventional speaker.
It is a perspective view of the conventional speaker.
It is sectional drawing of the conventional speaker.
It is an exploded view of the portion of the structure of the speaker of the present invention.
It is a perspective view of the structure of the speaker of this invention.
It is sectional drawing of the structure of the speaker of this invention.
FIG. 2 is a cross-sectional view of an embodiment of a loudspeaker structure of the present
invention.
[0013]
With reference to FIGS. 2A, 2B and 2C, which are an exploded view, a perspective view and a
cross-sectional view of part of the structure of the speaker according to the present invention, as
can be understood from the figures, the single speaker 3 is at least A placement zone 41 is
installed at an inner location of the opening of the cone holder 4 including one cone holder 4,
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one hanging side 51 and one diaphragm 52, and the placement zone 41 is open Is an L-shaped
annular space, and one contact portion 411 is provided in the storage zone 41, and one end of
the suspension support 51 is fixed to the periphery of the diaphragm 52 by a bonding method.
And the other end is fixed on the contact portion 411 of the cone holder, and after the periphery
of the diaphragm 52 is attached to the hanging side 51, the edge point of the opening of the cone
holder 4 again Sealed However, after the voice current signal flows to the voice coil inside the
cone holder 4, the voice coil generates a vibration and interlocks the diaphragm 52 to generate a
vibration and thus a sound. Suspension 51 allows the diaphragm to vibrate up and down more
smoothly than 52 and to reduce distortion when the voice coil produces vibrations, allowing the
vibration to have less resistance than traditional structures I assume.
[0014]
Referring to FIG. 3, which is a cross-sectional view of an embodiment of the inventive speaker
structure, the present invention employs a conductive conductor to make a voice coil and one
audio current signal is present in the voice coil. When input, the voice coil corresponds to one
carrying current (CARRY CURRENT) conductor, and if it is left in a constant magnetic field, the
carrying current (CARRY CURRENT) conductor is subjected to the action of force in the magnetic
field and moves. Based on the principle that the voice coil receives a force whose magnitude is
directly proportional to the audio current and the direction changes as the audio current
changes, thus the voice coil generates vibrations under the action of the magnetic field, And, the
diaphragm is interlockedly vibrated together, and the air before and after the diaphragm is also
oscillated, and thus the electric signal is converted to sound waves and radiated around.
[0015]
As can be understood from FIG. 3, when the voice coil generates vibration, the suspension side
allows the diaphragm to generate vibration up and down, and generates a height R vibrating up
and down, as shown in FIG. 1C. When the voice coil generates vibration, the diaphragm is
installed so that the vibration generates vibration up and down, and the suspension side is
positioned on the left and right side planes of the diaphragm, as compared to the conventional
speaker in Therefore, the vibration width is not only an angle θ, and the vibration width not only
has a very large limitation, but also causes a complete sound to be generated due to the
resistance when the diaphragm vibrates up and down. , Cause the generation of distortion.
[0016]
Besides, the present invention exerts maximum sound pressure efficiency by obtaining the
maximum effective vibration area (Sd) in order to limit the size of the dimensions of the cone
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holder.
Then, the actual operation formula becomes Equation 1 below.
[0017]
[0018]
Among them, the Vas is an equivalent air volume of the speaker, Sd is an effective moving area,
Cms is a compliance of the suspension system, and Qes is an electric damping coefficient
(Electric). Damping Factor), η 0 is single efficiency, Re is direct current resistance of voice coil,
BL is force factor generated by magnetic path and wire length of voice coil (force factor), Mms is
single vibration effective vibration mass (Moving) mass of the speaker, including the air load),
Msurround is the mass of the hanging side (Surrmass), M c is the voice coil mass (voice coil
mass), Mbond mass of the bonding agent (Bond mass for the moving part), it is Fs is single low
frequency resonance frequency (Resonance).
In addition, the formula of Mms (effective vibration mass of single vibration type) of a traditional
speaker is given by Equation 2 below.
[0019]
[0020]
And about Mms (effective vibration mass of single vibration type) of the present invention, the
formula becomes following Numerical formula 3.
[0021]
[0022]
Thus, the present invention can neglect the mass of the suspension side and achieve the
maximum single oscillating effective oscillating mass under the same size restriction.
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[0023]
The above description is a specific description of possible embodiments of the present invention,
and it is not used only to limit the claims of the present invention, and any technical spirit of the
present invention is not Any equivalent implementation or modification that does not escape
should be included in the claims of the present invention.
[0024]
Reference Signs List 1 diaphragm 2 suspension side 3 speaker single unit 4 cone holder 41
storage zone 51 suspension side 52 diaphragm 411 contact portion
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