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DESCRIPTION JPS5774679

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DESCRIPTION JPS5774679
Description 1 Title of Invention
Speaker watch
3. Detailed Description of the Invention The present invention relates to the structure of an
electronic watch incorporating a speaker. A so-called alarm-equipped electronic watch having a
function of producing sound in the conventional electronic watch is a piezoelectric type in which
a piezoelectric element is bonded to a diaphragm, a windshield, a back pig or the like as a
sounding body. A type was used. The sounding body is suitable for small-sized and thin-scissors
of Ara-1 and 伺 electronic arms, but as the alarm sound several K11 z, mainly 2 KII z or ix n 4
relatively high frequency, and the above-mentioned specific Only the sound of frequency was
resonating. On the other hand, with the development of the electronics industry, voice output by
ICVC has recently become possible. From this, it can be considered that the voice-opener can be
considered, but the sound-producing body as an electro-acoustic transducer in this case needs to
correspond to the frequency band of the voice, 2 piezoelectric type, electromagnetic type Was
impossible. Therefore, a speaker corresponding to the frequency band of voice is adopted as a
sound producing body, but even in the small-sized, thin-speaker squad car, it is impossible to
make the speaker too small in consideration of sound reproduction. It was possible to make it
difficult to reduce the size and thickness of the electronic watch with a speaker. In addition, there
has been a problem that it is necessary to incorporate EndPage: 1 into a watch case in
consideration of an impact etc. in a large case compared to a watch part called a speaker.
SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems,
and aims to reduce the size and thickness of a speaker-equipped electronic watch incorporating a
speaker necessary for sound reproduction, and to reduce the number of parts and provide a
structure with good assembly workability. The present invention will be described below based
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on the drawings. FIG. 1 is a plan view of the liquid crystal display type watch with a speaker
according to the present invention from the side of the display unit, and 1 is a watch case.
Reference numeral 2 is a time display unit made of liquid crystal, 3 is a cover which has a mesh
sound emission hole and protects a speaker, which will be described later, and 4 to 7 are switch
buttons for correcting the time display unit 2 and changing display contents , Lamp (not shown),
etc. are operated. 2 is a cross-sectional view taken along the line A in FIG. 1 (the band is omitted),
and a speaker 8 is disposed on the lower surface of the cover member 3. As shown in FIG. The
speaker 8 is an electrodynamic speaker including a cone 9, a ring-shaped voice coil 10, a
permanent magnet 11, a yoke 12, and a frame 13. The frame 13 is made of synthetic resin, and
the core of the cone 9 to which the voice coil 10 is fixed is adhered, and the permanent magnet
11 and the yoke 12 constituting the magnetic circuit are fixed.
Furthermore, one end of the frame 13 is extended, and the frame 13 has four portions which are
positioning portions 13 a of liquid crystal cells constituting the time display portion 2. 14 is a
circuit board and is opposite to the speaker 8? The IC '15 is mounted on the j side, and electronic
components such as the crystal unit 16 are soldered. A circuit support 11 made of synthetic resin
protects the electronic components such as the IC 13 and the circuit board 14 such as the crystal
oscillator 16 and also has a function to support a battery indicated by 18. A plurality of tubes 19
are fixed to the circuit support 11 and are positioned through holes (not shown) of the frame 13
and the circuit board 14. On the other hand, the liquid crystal cell constituting the time display
unit 2 is positioned by the positioning unit 134 of the frame 13 and held by screwing the display
unit pressing plate 2 Ω made of a thin metal plate on the tube 19. Similarly, the other tube 19 is
screwed to fix the frame 13. A conductive rubber 21 is used to electrically connect the time
display unit 2 and an electrode pattern (not shown) of the circuit board 14. A coil spring 22
conducts the terminals (not shown) of the lead wires 12a and 12b of the voice coil 10 with the
pattern (not shown) on the circuit board. FIG. 3 is a plan view of the timepiece module of the
present embodiment in FIG. 1 as viewed from the time display unit 2 side. As can be seen in FIGS.
2 and 3, the speaker 8 is incorporated into the clock module and at the same time the time
display unit 2 is positioned by the frame 13 and the speaker 8 and time display unit 2 are fixed
by tightening the screws. The assembly workability is good. In addition, since a member for
positioning and fixing the time display unit 2 is not specially provided, the integration density of
the timepiece module can be increased, and the size and thickness can be reduced. FIG. 4 shows
another embodiment of the present invention, wherein CA) is a plan view seen from the time
display side, (B) is a plan view seen from the back pig face 1, (C) a figure (A) FIG. In (A), (B) and
(C), 102 is a time display unit, 23 is a time display unit support frame for positioning the time
display unit 102, and 120 is a time display unit pressing plate. A speaker 108 includes a cone
109, a voice coil 11o1 permanent magnet 111, and a yoke 11 frame 113 as in the first
embodiment. Reference numeral 114 denotes a circuit board, on which an electronic component
such as a crystal oscillator 116 is soldered to mount Ic 115. -The tube 119 is fixed to the frame
113, and the circuit board 114.
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Each is positioned through a hole (not shown) of the time display plate pressing plate 23.
Further, the frame 113 is provided with an Ic 115, and a four portion 113α for housing
components such as the crystal oscillator 116, and also serves the same function as the circuit
support 17 in the first embodiment. A coil spring 122 works in the same manner as in the first
embodiment. The reference numeral 118 denotes a pond, and the reference numeral 24 denotes
a back pig provided with a sound emission hole 24α. As a result, the same effect as that of the
first embodiment can be obtained. FIG. 5 shows a speaker structure in which the frame protects
the electronic components on the circuit board in the same manner as the embodiment shown in
FIG. The figure is a plan view of the cone 209 as viewed from the side where the voice coil is
attached, and (B) is a sectional view of the time movement in which the cone 209 is incorporated.
In FIG. 5 (A) and (B) VC, the number “r” of the last two digits of the number represents the
same part as the number in FIG. A donut-shaped cone support frame 25 is adhered to the outer
periphery of the cone 209. The lead wires 210a of the voice coil 21002 bonded to the one
hundred thousand cones 209 are attached to the terminal plate 26 attached to the cone support
frame 25 by a hunter. The terminal plate 26 is provided with a connection pattern 26a at the
time of assembly. In this state, as shown in FIG. 7B, when the screw is inserted into the tube 219
of the time display unit support frame 123, the speaker 208 is completed. As a result, the
terminal board 26 is attached in a state in which the connection spring 27 which is electrically
connected to the circuit board 214 molded on the frame 213 is in pressure contact. As
mentioned above, it is easy to process the voice-one-yl (7) glued wire which is divided into
several cones by separating the cone which composes the speaker separately, and repair by
disconnection of the lead wire Is easy. As described above, according to the speaker-equipped
arm case of the present invention, the frame constituting the speaker forms a part of the watch
parts, thereby increasing the integration density of the toki juice 1 module, making it possible to
make the watch smaller and thinner. Become. In addition, since the number of parts is reduced
and the assembling workability is improved and the speaker is attached in the moniker and time
module state, the sound reproduction by the speaker is easy, and so many effects M! Have.
4 is a plan view of the speaker arm according to the first embodiment of the present invention,
FIG. 2 is a cross-sectional view of FIG. 1, and FIG. 3 is a clock module in FIG. 4 is a plan view, (4)
is a plan view, (B) is a bottom view, (C) is a cross-sectional view of FIG. 4 (Δ), and FIG. 5 is a plan
view of FIG. In the embodiment, (A) is a plan view of a cone, and (B) is a sectional view of a
timepiece module. 8.108.208 ・ ・ ・ Speaker 9.109.209 ・ ・ ・ Cone (8) io, 110.210 ・ ・ ・
Voice coil 11.111.211 ・ ・ ・ Permanent 118 stone 12.112. 212 ・ ・ ・Yoke 13.113.213 ...
Frame patent applicant Citizen Watch Co., Ltd. Figure 2 EndPage: 3
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