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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a board speaker
according to the present invention, FIG. 1 is a partially cutaway front view, and FIG. 2 is a
partially cut away rear view showing the main part. 3 Fig. 4 is a cross-sectional view of the
partially cut away main part, Fig. 5 is a partially enlarged plan view of the diaphragm partially
cut away, Fig. 6 is a plan view of the bobbin pace, and Fig. 7 is a frame and vibration It is a partial
longitudinal cross-sectional view which shows the attachment structure with a board. Explanation
of main symbols, 1 иии и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и magnetic circuit components,
A resin tape, 6 и и и и и и voice coil. Fig. 1-79-Actual opening 49-74233 (2) Fig. 2 Fig. 3-(1) Actual
opening 49-74233 (3) Fig. 4 Fig. 5 Fig. 6 Fig. 7 -
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a board speaker in
which a forehead or a panel used as a diaphragm or a diaphragm is used for ornamental or
decorative purposes with a paper, a picture, a picture or the like attached thereto. Recently,
attach the magnetic circuit components to the mounting plate and wrap the frame around the
outer edge 'IN surface of the wire mounting plate, and l. A flat diaphragm is attached to the
frame, and a ribbon coil placed in a magnetic pole gap is connected to the back surface of the
diaphragm to make a board speaker or a poster panel is commercially available. However, in the
conventional hoode skier of this kind, the fact that it is combined as a swing plate and that it is
fixed to a frame, the swinging plate, the plate is pasted, or the plate is pasted with Hosster 5ii.
Therefore, the voice coil's response in the straight direction is lacking due to the fact that the
edge forming the edge on the periphery of the diaphragm is not practical, etc., the effective
diameter of the vibration is small, and the sensitivity is true or false That is, the bass
characteristics are remarkably revived. The material of the book or the material of the
constitution is particularly suitable for the diaphragm in the above-mentioned board speaker,
having a small mass and having a rigidity to a certain extent and excellent in vibration response
in the straight direction of the voice coil. Required Usually, the paper (21 or paper-based material
is most commonly used as a speaker cone as it has some characteristics required as a speaker
cone, but the vibration of a board speaker as described above The board can not be used directly
as a panel board, and it can not be used directly or it lacks in rigidity, and it has poor mechanical
strength, especially pressure resistance, and vertical and horizontal vibration at passing holes.
Because there is a difference in responsiveness, it is not suitable as a diaphragm used as a panel.
Therefore, the sister diaphragm of the present invention is made into a special structure, and the
attachment to the frame is devised to propose the best board speaker as a forehead or poster
panel. In the present invention, the magnetic one-way structural member 2 is attached to the
mounting plate 1 and the frame 3 is provided around the front of the outer peripheral edge of
the mounting plate. Cast a sandwich structure board with the core as a lifting rice bowl through
the foam resin tape S through the foam resin tape S, place it in the magnetic pole gap and place
the voice coil 4 on the lIt plane of the vibrating rice bowl It is connected. In addition, it is also
possible to carry out a lacquer impregnation process on the next-side liner or a double-sided
back surface liner to give a moisture-proof effect, as shown in FIG. it can. To explain the seven
other composites, the longitudinal reinforcement plate / a is attached to the inner surface of the
accumulation plate l and seven, and a keyhole-shaped accumulation hole / b is formed in the
center to page them. Then, the mounting is carried out by fitting the magnetic member
constituting the magnetic yoke to the metal yoke mounting plate / c.
In addition, / d is a mounting plate I, and the non-woven fabric / e is stuck on the inner surface.
As the magnetic circuit forming member, although an external magnet type shown by a yoke 81
magnet 211 and a flat core C1 ball core d is used, it is needless to say that an internal iIl type
may be used. In the center of the ball d, a jig insertion hole C penetrating from the yoke
mounting plate / c is bored. Voice coil 6 companies Bohinhase made of aluminum with a
projection part corresponding to its coil bobbin 4m? The bobbin base (4) 7 is stuck and
connected to the back of the vibrating rice bowl. The 4bli lead wire 4C is a connection plate
attached to the end of the bobbin base, and l is a terminal plate, and the yoke mounting plate 1cK
is attached. In the actual assembly KwA, KL, and a jig assembly (not shown) with 1lii accuracy is
inserted through the jig insertion hole ? so that adhesion of vibration rice to foam # M fat tape S
is finally performed. The vibration rice is adhered to the foam tape jK so that the nine circular
holes 1 are aligned with each other and pierced at the center of the bobbin plow at the tip of the
seven. In this way, the centering of the coil is performed too much. Because of the abovementioned constitution, the vibrating rice has moderate rigidity depending on the presence of the
honey cam core as its core, and has uniform responsiveness and is light in weight. Of course, the
pressure resistance company is extremely large. , Liner gauze ILru & has great characteristics of
paper quality Young's modulus and achievement of longitudinal wave propagation, and seven
vibration '# L 4 L is adhered to the frame 3 through the foam tree X tape 3 From speaker to
speaker 5) It acts as a damper while acting as an edge in the cone. As described above, the
present invention overcomes the drawback of the diaphragm with the combined use of the poster
panel, which is the biggest problem in this type of board speaker, and can be made a board
speaker of sensitivity. Fig. 11U shows an embodiment of a board speaker according to the
present invention, wherein 1 is a partially cutaway front view, 1 is a partially cut away rear view
showing the main part, 3 is o This figure is a cross-sectional view of the main part that is partially
cut out, and is the jPS figure that is a part of the diaphragm? C partial enlarged plan view2. t4 is
a plan view of the bobbin base, and FIG. 6 is a partial longitudinal sectional view showing the
mounting structure of the frame and the diaphragm. Explanation of main symbols l: Mounting
plate, Koni magnetic circuit component, 3! Frame, base: diaphragm, S: foam resin tube 6: voice
coil (6) FIG. 1, 757 to 7 ',' -0000f ',' 271bt 'cJ, IC-f (-) (-) (n) ) 1 e no 5--no)) Q Q: il + 'f Kt record
applicant Aen sound acoustic и ? company ? I!
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Utility model registration requester "-" 41 = X company 14 ? ? ... 1 Kakiuchi Isao !, 74233 me?
Attorney at a patent attorney ?? former prize-Higashi Other designers and agents other than
the above (11 inventor's expenses ? k1 ? ? ? ? ? ?? ? ? ? ? ? 4? 4? 4? 4-4 / / A
+ R Eshi-U Name Abe Hisatoshi-) Agent Address Minato-ku, Shiba Kampei-cho, Minato-ku, Tokyo
District Hirasawa Bi-kojio 3 Name (9 j Sanko) Name (Yugo) Kakiuchi, ? tPr ? tth nth 4 g 4 r R t
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