U.S. patent application number 11/423705 was filed with the patent office on 2007-12-13 for diaphragm structure.
Invention is credited to Hiroshi Ohara.
Application Number | 20070283677 11/423705 |
Document ID | / |
Family ID | 38820496 |
Filed Date | 2007-12-13 |
United States Patent
Application |
20070283677 |
Kind Code |
A1 |
Ohara; Hiroshi |
December 13, 2007 |
Diaphragm Structure
Abstract
A diaphragm structure includes a plurality of yarns and a
plurality of metal wires interfused and entwisted with each other
to form a metal yarn, which is woven into a surface material, and
the surface material is further shaped into the diaphragm, such as
a damper and a cone paper for a speaker. By the diaphragm structure
with the metal wires, it can be increased in its strength,
availability and tearing resistance. The metal wires and the yarns
may be entwisted together in different types according to users'
desires to obtain the required strength and elasticity.
Inventors: |
Ohara; Hiroshi; (Taoyuang
Hsien, TW) |
Correspondence
Address: |
WPAT, PC;INTELLECTUAL PROPERTY ATTORNEYS
2030 MAIN STREET, SUITE 1300
IRVINE
CA
92614
US
|
Family ID: |
38820496 |
Appl. No.: |
11/423705 |
Filed: |
June 12, 2006 |
Current U.S.
Class: |
57/210 |
Current CPC
Class: |
H04R 9/043 20130101;
H04R 2307/025 20130101; H04R 7/02 20130101; D02G 3/12 20130101;
H04R 2307/027 20130101 |
Class at
Publication: |
57/210 |
International
Class: |
D02G 3/36 20060101
D02G003/36 |
Claims
1. A diaphragm structure, comprising: a plurality of yarns; and a
plurality of metal wires interfused with the plurality of yarns,
which are woven into a surface material, and the surface material
is shaped into the diaphragm.
2. The diaphragm structure as claimed in claim 1, wherein the
quantity of the yarns included in the surface material is larger
than that of the metal wires.
3. The diaphragm structure as claimed in claim 1 or 2, wherein the
metal wires and the yarns are entwisted together to form a metal
yarn, which is woven into the surface material.
4. The diaphragm structure as claimed in claim 3, wherein the
plurality of yarns surround the metal wires to form the metal
yarn.
5. The diaphragm structure as claimed in claim 3, wherein the
plurality of metal wires and the plurality of yarns surround one
yarn to form the metal yarn.
6. The diaphragm structure as claimed in claim 4, wherein the metal
yarn includes one metal wire.
7. The diaphragm structure as claimed in claim 5, wherein the metal
yarn comprises one metal wire.
8. The diaphragm structure as claimed in claim 5, wherein the metal
yarn comprises two metal wires.
9. The diaphragm structure as claimed in claim 5, wherein the metal
yarn comprises three metal wires.
10. The diaphragm structure as claimed in claim 1 or 2, wherein the
diaphragm is a damper for a speaker.
11. The diaphragm structure as claimed in claim 1 or 2, wherein the
diaphragm is a cone paper for a speaker.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates generally to a diaphragm
structure, such as a damper or a cone paper for a speaker.
[0003] 2. The Prior Arts
[0004] FIG. 1 shows a typical structure of a dynamic coil speaker,
which comprises a power system, a cone paper and a suspension
system. The power system comprises a magnet A, an iron core B, a
gap C and a voice coil D. The cone paper E is a diaphragm for
vibrating or moving air, which is generally shaped into a conical
or semi-spherical voice cavity. The suspension system comprises a
damper F and an edge suspension structure for limiting movement of
the cone paper E in a specific direction.
[0005] The principle of speaker is described as follows. When the
voice coil D is loaded by AC current, the current-carrying voice
coil D in a magnetic field of the magnet A experiences a magnetic
force and moves up and down in the gap C, so that the cone paper E
attached to the voice coil D moves air to produce sound.
[0006] The cone paper and the damper of the speaker are members
that can produce vibration, which are generally called
"diaphragm".
[0007] Other kinds of speakers may have different structures.
However, they include at least a diaphragm and have the same
operation principles.
[0008] Referring to FIG. 2, in view that the damper is used for
suspending the voice coil and the cone paper, it is generally
designed to have a plurality of concentric circular peaks and
valleys. That means it has a corrugated structure, which makes the
damper have an elastic function like a spring and can support the
voice coil and the cone paper. Therefore, the elasticity and
strength of the damper will directly affect the strength and
amplitude of the cone paper and further affect its sound
effect.
[0009] The conventional damper is generally made of cloth surface
material, which is dipped in resin, dried and integrally formed by
a mold. In view the surface material is woven with yarns, the
damper may have a lower strength and a bad tearing resistance,
thereby causing its deformation and affecting its sound
quality.
[0010] FIG. 3 shows a structure of a typical cone paper for a
speaker. The shape, size and material of the cone paper will
influence its sound quality. The materials of the cone paper
generally include cloth, paper (mixture of paper and fiberglass),
resin, polypropylene, silk, aluminum, titanium, beryllium,
aluminum-magnesium alloys, ceramics and wood. The materials can be
chosen according to high or low frequency speakers and the desired
tone quality. Generally, cloth, paper, resin and silk exhibit lower
rigidity during vibration and more temperate quality but not clear.
Titanium and beryllium exhibit higher vibration frequency, and
clear and trenchant sound quality.
[0011] Basically, the cone paper made by cloth or silk has lower
strength and tearing resistance. After used a period of time, it
easily causes a deformation, thereby affecting its sound
quality.
SUMMARY OF THE INVENTION
[0012] A primary objective of the present invention is to provide a
diaphragm structure, which can solve the above-mentioned drawbacks
of the conventional diaphragm and enhance its strength and tearing
resistance, but not decrease the required elasticity.
[0013] To achieve the above-mentioned objectives, a surface
material, which is to be manufactured to a diaphragm in accordance
with the present invention, is interfused with metal wires. Thus,
the diaphragm can be increased in its strength and tearing
resistance.
[0014] The main solution of the present invention is to interfuse
metal wires with yarns and then be weaved to a surface material,
wherein the quantity of the metal wires is less than that of the
yarns. Finally, the surface material is shaped into the
diaphragm.
[0015] Another solution of the present invention is to entwist at
least one metal wire with the yarns to form a metal yarn, and then,
use the metal yarn to form the surface material.
[0016] A further solution of the present invention is to surround
at least one metal wire with a plurality of yarns to form a metal
yarn, or surround one yarn with a plurality of metal wires and a
plurality of yarns to form a metal yarn, and then, use the metal
yarn to form the surface material for manufacturing the
diaphragm.
[0017] In sum, a diaphragm structure includes a plurality of yarns
and a plurality of metal wires interfused and entwisted with each
other to form a metal yarn, which is woven into a surface material,
and the surface material is further shaped into the diaphragm, such
as a damper and a cone paper for a speaker. By the diaphragm
structure with the metal wires, it can be increased in its
strength, availability and tearing resistance.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The present invention will be apparent to those skilled in
the art by reading the following detailed description of preferred
embodiments thereof, with reference to the attached drawings, in
which:
[0019] FIG. 1 is a plane sectional view of a typical dynamic coil
speaker;
[0020] FIG. 2 is a perspective sectional view of a diaphragm served
as a damper for a speaker according to the present invention;
[0021] FIG. 3 is a perspective sectional view of a diaphragm served
as a cone paper for a speaker according to the present
invention;
[0022] FIG. 4 shows a surface material that is to be manufactured
to the diaphragm of the present invention;
[0023] FIG. 5 is an enlarged view of an area 5 in FIG. 4;
[0024] FIG. 6 is a locally perspective sectional view taken through
line VI-VI of FIG. 4;
[0025] FIG. 7 is a plane sectional view of a metal yarn, which
comprises one metal wire and a plurality of yarns entwisted around
the metal wire according to a first embodiment of the present
invention;
[0026] FIG. 8 is a plane section view of a metal yarn, which
comprises one metal wire and a plurality of yarns entwisted around
one yarn according to a second embodiment of the present invention;
and
[0027] FIG. 9 is a plane sectional view of a metal yarn, which
comprises three metal wires and a plurality of yarns entwisted
around one yarn according to a third embodiment of the present
invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0028] Referring to FIG. 4, a surface material 1 is woven with
appropriate yarns. The surface material 1 can be manufactured to a
diaphragm in accordance with the present invention, such as the
damper F shown in FIG. 2 and the cone paper E shown in FIG. 3,
through resin dipping, drying, molding and trimming processes.
[0029] Referring to FIG. 5, the surface material 1 of the present
invention is woven with a plurality of yarns 10 using any available
weaving technologies. The structure of the surface material 1 is
similar to the conventional knitwear structure and may print
various patterns and stripes thereon.
[0030] FIG. 6 shows the structure of the surface material 1
according to the present invention. The surface material 1 is woven
with a plurality of metal yarns 10 not conventional pure yarns. The
metal yarn 10 comprises a plurality of metal wires 102 and a
plurality of yarns 101 interfused and entwisted together.
[0031] The structure of the metal yarn 10 may have different types.
For example, FIG. 7 shows the metal yarn 10 comprises one metal
wire 102 and a plurality of yarns 101 entwisted around the metal
wire 102 according to a first embodiment of the present invention;
FIG. 8 shows the metal yarn 10 comprises one metal wire 102 and a
plurality of yarns 101 entwisted around one yarn 101 according to a
second embodiment of the present invention; and FIG. 9 shows the
metal yarn 10 comprises three metal wires 102 and a plurality of
yarns 101 entwisted around one yarn 101 according to a third
embodiment of the present invention. The quantity of the metal
wires 102 and the yarns 101 can be adjusted according to the actual
demands. Therefore, the metal yarn 10 may be woven into the surface
material 1 for further manufacturing the diaphragm.
[0032] FIGS. 7-9 show the different structure of the metal yarns,
respectively. However, they have a common characteristic that the
quantity of the metal wires 102 is less than that of the yarns 101,
so that the diaphragm can keep appropriate flexibility and
elasticity. When the quantity of the metal wires 102 is larger than
that of the yarns 101, the diaphragm might be over rigid.
[0033] According to the present invention, the diaphragm has the
metal wires; thereby the strength, availability and tearing
resistance of the diaphragm can be increased. And it has more
durable than the conventional diaphragm and can improve the quality
of speakers.
[0034] While the present invention has been described by way of
example and in terms of preferred embodiments, it is to be
understood that the present invention is not limited thereto. To
the contrary, it is intended to cover various modifications and
similar arrangements as would be apparent to those skilled in the
art. Therefore, the scope of the appended claims should be accorded
the broadest interpretation to encompass all such modifications and
similar arrangements.
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