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JPS4993232

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DESCRIPTION JPS4993232
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing an
embodiment of a loudspeaker according to the present invention, FIG. 2 is an enlarged sectional
view of an edge portion of the loudspeaker shown in FIG. 1, and FIG. 4 is an enlarged crosssectional view of the damper portion of the Sveica shown in FIG. 1, and FIG. 5 shows another
embodiment of the damper portion of the speaker according to the present invention. FIG. 6 is an
enlarged cross-sectional view, FIG. 6 is a view for explaining a method of manufacturing a
substantially annular width material used for a dunker and an edge of a speaker according to the
present invention, and FIG. In the figure, reference numeral 1 is a diaphragm, 3 is a voice coil, 4,
4a and 8 are sponge rubbers, and their cross section is a substantially annular member, 5 Normal
dumbar, 9a yoke, 10 cotton cloth, silk cloth: flexible Material, "12a, 12b and 12e are a sponge
rubber material as a raw material for forming the member 4,4a or 8 illustrates respectively.
Figure 3-75-Japanese Utility Model No. 49-93232 (2) 6 Figure 7m-76-
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker
improved in <z-: <td speaker, the edge of the diaphragm and the damper. The speaker
diaphragm's edge and damper is a large 4! Because it has lI, and peaks and valleys are easily
generated in the speaker's single wave number characteristics due to reflected waves from the
edges and dampers, their design is extremely important-to the present σJ 畠 fidelity speaker I)
The engine dampers used are mostly made of cotton cloth, etc.-including cloth with resin, etc.,
and formed by IJ + 1 @ L or punctuation)), while holding a grip In order to increase the flexibility
of the mold and to increase the shape retention property, although various measures have been
made for the resin seed used in the impregnation or the molding method, various measures have
been taken from the edges and dampers. It was difficult to reduce the influence of the reflected
waves of As the material of the sound 'l non-reflecting end, it is possible to use air 4 resistance
and be extremely flexible and suitable as a sponge rubber, so that the above-mentioned nine
defects are removed in FIG. The sponge rubber material is used as an edge for four rows as
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shown in the jaw large new view. However, since one of the several millimeters of electricity is
costed as a flat plate, it has low shape properties, can not have a large injection capacity, and air
resistance is not effectively used. Is the current situation. The present invention has been made to
eliminate the above-mentioned conventional drawbacks, and therefore the object of the present
invention is to make the cross-section of the sponge rubber into a generally clay-like shape by
squeezing the rubber material. (2) tfj: 'jj-attached to a part or all of the edge of the moving plate,
a novel member is superior in distortion characteristics, bass characteristics and N-shaped
retention stop The present invention will now be described in accordance with the embodiment
shown in the attached drawings, which is intended to provide an improved loudspeaker. FIGS. 1,
2 and 4 show a preferred embodiment of a loudspeaker according to the present invention. In
FIG. 0, the reference numeral (1) designates a diaphragm for the chassis, its central rear part. (Z)
K is bonded to the voice coil (3), held by a normal cloth damper (6) through a member (4) formed
of sponge rubber, and inserted into the magnetic circuit gap (6) The front end peripheral portion
(7) of the diaphragm (1) is fixed to and supported by the yoke (9a) via an edge formed of a
member (8) formed of sponge rubber. FIG. 5 shows a second embodiment of the present
invention, in which the dampers are all sponge rubbers; ,: Consists of a member (4a).
The members (4) and (4cL) constituting the damper and the member (8) constituting the edge
are made of soft and flexible material (3), for example, cotton cloth, q4 cloth or the like in which
sponge rubber is encased It is a beat. 6 and 7 are substantially annular members H4) and (4α)
which constitute a damper and an edge used for a speaker according to the present invention. It
is 81 for demonstrating the method to manufacture (8). As shown in FIG. 6, the f surface is a
square, the round shape is a sponge comb material (12 g) such as an odd row, (126) or Fi (12 e)
with a cloth Ml and the like 7. Apply tp as in ζ and wear α and α, b and b with a coating agent
or a method such as sewing. In one case, the elasticity of the sponge comb material causes
several generations to be received as shown in Fig. 7 as shown in Fig. 7 / r '). The sponge rubber
material formed in this manner is used as a single member (4), (4a) and (8) which forms a groove
and an r'8 edge as a damper and a single piece. Therefore, it has the feature that it is not
necessary to form separately by cloth, etc. or by any means of cloth or 2 rubber. In addition, the
size of the sponge rubber, @ -shape, and the 2nd and the 2nd llc allow the speaker to be freely
designed to have appropriate compensability and shape-specific characteristics. The present
invention is constituted of the above-mentioned kerosene, and in the present invention (4), a very
large flexible member (4) or (4a) is used as a tick / pa and the edge of the front end of the
diaphragm is used. Since the extremely flexible member (8) is also used as in this case, the
diaphragm (1) is extremely softly held by the support frame (9). Therefore, a reflected wave or
the like generated at the periphery of the diaphragm or the diaphragm is almost absorbed by the
member 141 or (4 Is) or the member (8). The adverse effect due to the reflected wave is reduced,
and a speaker with good frequency characteristics can be obtained. 6 and the members (4), (4a)
and (8) are shielded by a flexible material such as cotton cloth or 1 cloth. Shape retention is very
good. 1 and 4 show a longitudinal sectional view showing an embodiment of the speaker
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according to the present invention, FIG. 2 is an enlarged sectional view of an edge portion of the
speaker shown in FIG. 3 [share] is an enlarged sectional view of the edge portion in the
conventional speaker. @ 4 "; 4 is a small portion of the damper of the speaker (0 enlarged
sectional view, FIG. 5 □, the speaker damper according to the present invention (11 of the other
(5)! FIG. 6 is an enlarged sectional view showing an embodiment, FIG. 6 is a view for explaining a
method of manufacturing a damper of a speaker and a substantially annular member for edge
KW according to the present invention, and FIG. 7 is a manufacturing method shown in FIG. FIG.
11 is a perspective view of a substantially annular member manufactured according to the
invention, in which reference numeral 11) is a diaphragm, (3) is a voice coil, +4), (4a) and (8) are
sponge rubbers. A member having a substantially annular cross section, (5) a normal damper,
(9a) a yoke, biting a cotton cloth, 4 cloth, etc. l1TI!
14 11. The material, (128) I (126) and (12r) respectively show sponge rubber materials
which become the weir material when forming the members (4) (4α) or (8). Utility model
registration applicants Mrs. Shiga, Mrs. Yutoh, attorney-in-law, Shoji Oikawa 16) Unfavorable @ 1
diagram 1C / 8? 7 '躬 3 figure □. Antibacterial bacteria 3) e-Z 6 ′ ′ ( (tm ′ ′, l / 66 □□□
1 l 12: blZc 7 → → 11, daXrt 8 * Ienoko 1 1 6) Likely 4 to n1 · Tat 不 代 f-fz-L-it + IBg = α η
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