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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a conventional small
speaker, FIG. 2 is a cross-sectional view of the small speaker of this invention, and FIG. 3 is a plan
view of FIG. DESCRIPTION OF SYMBOLS 1 ... Inner back cover, 2 ... Patzkin, 3 ... Sound emission
board, 4 ... Diaphragm body 1.4a ... Movable iron piece, 5 ... Diaphragm receiving ring, 5a ...
Grooves for fastening tools, 6 ································································
····················································································································································· With a fastening tool
groove, 6 · · · · · · speaker ground pin, 6 b · · · speaker earth pin, 6 c · · · speaker lead pin, 6 d · · · ·
anti-rotation tongue, 7 · · · drive Coil 1a: speaker lead wire 7b: speaker ground wire 8: magnet 9:
insulating material 10: speaker lead substrate 11: molding material 12: 12・ Speaker lead board,
13 ... main board.
DETAILED DESCRIPTION OF THE INVENTION Consideration of f * # i A small speaker that is
attached to a watch or the like. As shown in FIG. 1, the conventional small speaker has a
structure in which a speaker lead bin 66 and a speaker ground pin 6bf are provided inside the
speaker, and a speaker lead 97a and a speaker ground 1117 are respectively S-connected to this.
. However, in such a structure, since the speaker lead bin 6 and the speaker earth bin 6 h are
protruded from the surface of the stone 8, the magnets 8 have several rectangular shapes in
order to avoid interference with the one magnet 8. The magnet 8 has a large size and the overall
size of the speaker is limited, and the rectangular magnet has a high cost of cropping compared
to the annular magnet. The speaker core 6 has a defect such as 丸 め, and the speaker core 6 has
no rotation prevention mechanism. The bottom plate 13 of the lower portion of the speaker
lowers the interference with the lower convex portion of the speaker core 6 Interference with the
convex portion has to be avoided, and therefore, it has a disadvantage that the whole becomes
thick. Disadvantages 1 of this invention 紘 上? By removing the spino (2)-lead wire and the
speaker ground wire to the outside of the speaker and welding) by reducing the size of the
speaker outer tube and generalizing the anti-rotation tongue, overall thickness The purpose is to
make the Hereinafter, this invention will be described in detail with reference to FIGS. 1 is an
inner back cover, 2 is a Patzkin, 3 is a sound emitting 1i% 4a diaphragm supported by a hook by
a back cover 1 and a diaphragm receiving ring 5! ll-, is integrally shaped with the moving iron
piece 46. The reference numeral 5 denotes a diaphragm receiving ring, which is screwed with the
inner back surface 1 and has a mounting tool 111 for fastening. A speaker core 6 is integrally
formed with the core pin 6a and has a speaker earth bin 6h and a rotation preventing tongue 6d,
and the fastening tool groove 5a and the rotation preventing tongue 6d are engaged. 7 # i
speaker driving coil has a speaker lead [17 & and a speaker ground wire 7 & and the speaker
lead 87m is insulated from the speaker core 6 by the insulating material 9 and is integral with
the speaker core 6 and the insulating material 9 The speaker lead board 10KllI which is shaped
into contact with & (m) nono, the 皺 speaker earth 117− is swayed by the nuclear speaker earth
bin 6 &. The speaker lead wire 7 and the speaker ground wire 7 & a mold material 11 are held. A
speaker lead plate 12 is in contact with the speaker lead substrate 10.
8 is an annular magnet. 15 is a ground board. As mentioned above, since this invention does not
have the convex St by the pin etc. inside the speaker, an annular magnet can be used, the speaker
outer diameter can be made small, the cost of preparation can be reduced, and the rotation at
any position can be prevented. Ninth, since the speaker can be fixed by avoiding the convex
portion of the electric plate, the whole can be made thin.
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