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JP2006166029

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2006166029
The object of the present invention is to reliably perform waterproofing and dustproofing
without disturbing the vibration of a diaphragm which doubles as a screen member. A flat panel
speaker mounting structure (36) has a diaphragm (31) attached in a contact state to an actuator
module (32) at a predetermined site so as to transmit vibration, and a frame-like gasket made of,
for example, silicone rubber. It is attached to front case 12 via member 33, and is constituted
roughly. The gasket members 33 are respectively bonded to the diaphragm 31 and the mounting
surface 17m of the front case 12 via a frame-shaped double-sided adhesive sheet. Thus, the
gasket member 33 supports the vibration plate 31 without disturbing the vibration thereof, and
prevents the intrusion of water or the like into the upper housing 6. [Selected figure] Figure 1
Flat panel speaker mounting structure and mounting method in portable electronic device, and
portable electronic device
[0001]
The present invention relates to a mounting structure and mounting method of a flat panel
speaker in a portable electronic device, and a portable electronic device, for example, a folding
type using a screen member for protecting a display panel as a diaphragm for emitting sound.
The present invention relates to a mounting structure and mounting method of a flat panel
speaker in a portable electronic device such as a portable electronic device such as a portable
electronic device such as a portable electronic device such as a portable electronic device in
which a diaphragm serving as a screen member is attached to a housing.
[0002]
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1
2. Description of the Related Art In recent years, portable electronic devices such as mobile
phones have been widely spread due to the high convenience that they can be used while moving
or away from home.
In particular, foldable mobile telephones that can be opened and closed are received by many
users because they can be stored compactly. Furthermore, using a two-axis hinge unit, folding is
also performed so that one casing can be pivoted relative to the other casing also around a
pivoting axis orthogonal to the pivoting axis for opening and closing Type mobile phones have
also been put to practical use.
[0003]
As shown in FIGS. 11 and 12, the mobile phone 101 is configured such that the upper unit 102
and the lower unit 103 are mutually coupled by the biaxial hinge portion 104, and the upper
housing 105 of the upper unit 102 is configured. A receiver unit 106 for outputting a receiver
voice and a display unit 107 comprising a liquid crystal display device are mounted on the lower
case 108 of the lower unit 103, and an operation unit 109 comprising various operation keys
and the like, A voice transmitting unit 110 for inputting voice and a voice output unit 111 having
a speaker are mounted.
[0004]
The display unit 107 includes a liquid crystal display panel 112 and a backlight device for
providing illumination light to the liquid crystal display panel 112, as shown in FIG. It is
implemented in the body 105.
Further, a screen member 114 for protecting the liquid crystal display panel 112 is adhered to
the front case 115 constituting the upper casing 105 by using a double-sided adhesive sheet
116.
[0005]
By the way, as the portable telephone set 101, one having not only the original call function but
also a data communication function capable of sending and receiving e-mails and browsing a
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2
home page by connecting to the Internet has become widespread. In such a mobile phone 101,
for example, when a program downloaded from a site is executed to enjoy a game or the like, the
housing is opened to listen to the voice while watching the screen of the display unit 107. It will
be used in the state.
[0006]
However, when trying to look at the display screen of the display unit 107 in a state in which the
display screen is folded forward to make the display compact, the speaker of the audio output
unit 111 is hidden and the voice can not be heard sufficiently. There was a problem that. Also,
during a call, with the case open, the receiver 106 should be placed against the ear to listen to
the received voice, but since the sound hole is relatively small, it is difficult to reliably make the
sound It was out of the hole position, the volume was insufficient, and the sound was unclear.
Therefore, recently, a technology using a screen member for protecting a display panel as a
diaphragm for emitting sound in a display of a personal computer, for example, has been put to
practical use, and it is conceivable to apply this technology to a mobile phone (For the sound
output from the display screen, see, for example, Non-Patent Document 1.)
[0007]
“Nikkei Business November 1, 2004 issue” Nikkei BP, November 1, 2004, p.90
[0008]
The problem to be solved is that, when the technology used in the display of a personal computer
is applied to a mobile phone, moisture infiltrates into the inside of the housing through the
gasket member that supports the diaphragm, which causes a defect in the device. And the risk of
failure is also increased.
That is, since the personal computer is not supposed to be used outdoors, the gasket member
supporting the diaphragm which doubles as the screen member is mainly intended to support
the diaphragm so as not to disturb the vibration of the diaphragm. As long as it has a dustproof
function at the very least, a sufficient material is selected and it does not have a waterproof
function. For this reason, the support structure of the diaphragm which doubles as a screen
member of a prior art can not be applied as it is.
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3
[0009]
The present invention has been made in view of the above-described circumstances, and a flat
panel speaker mounting structure in a portable electronic device capable of reliably improving a
waterproof function and a dustproof function without preventing vibration of a diaphragm and
An object of the present invention is to provide a mounting method and a portable electronic
device.
[0010]
In order to solve the above-mentioned problems, the invention according to claim 1 is a flat panel
speaker mounting structure in which a flat panel speaker for vibrating a diaphragm and emitting
an acoustic wave by an actuator is attached to a housing of a portable electronic device. The
diaphragm is attached to the housing having the opening formed therein so as to cover the
opening through a gasket member bonded to the back surface of the diaphragm, and the gasket
member is non-water permeable. It is characterized in that it is made of a flat elastic member.
[0011]
The invention according to claim 2 relates to the mounting structure of a flat panel speaker in
the portable electronic device according to claim 1, and the gasket member prevents liquid from
entering the housing from the opening. And is bonded to the edge of the opening of the housing.
[0012]
The invention according to claim 3 relates to the mounting structure of a flat panel speaker in
the portable electronic device according to claim 1 or 2, wherein the gasket member is adhered
to the diaphragm, According to the vibration, the diaphragm is supported while being deformed
at least along the thickness direction.
[0013]
The invention according to claim 4 relates to the mounting structure of the flat panel speaker in
the portable electronic device according to claim 1, 2 or 3, wherein the gasket member is made
of rubber.
[0014]
The invention according to claim 5 relates to the mounting structure of a flat panel speaker in
the portable electronic device according to claim 4, wherein the gasket member is made of
silicone rubber.
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[0015]
The invention according to claim 6 relates to the mounting structure of the flat panel speaker in
the portable electronic device according to any one of claims 1 to 5, wherein the actuator
comprises a piezoelectric element, and the diaphragm It is characterized in that it is in contact
with a predetermined part of
[0016]
The invention according to claim 7 relates to the mounting structure of the flat panel speaker in
the portable electronic device according to any one of claims 1 to 6, and the portable electronic
device displays character information or image information. The diaphragm is made of a
transparent member and doubles as a screen member for protecting the display screen of the
display.
[0017]
The invention according to claim 8 relates to the mounting structure of the flat panel speaker in
the portable electronic device according to any one of claims 1 to 7, wherein the gasket member
is a frame-shaped member for supporting the diaphragm. The first seal surface and the second
seal surface respectively disposed on the diaphragm side and the edge side of the opening, and
the second seal surface surrounds the opening, It is characterized in that it is in contact with the
mounting surface of the edge portion.
[0018]
A portable electronic device according to the invention as set forth in claim 9 relates to the
mounting structure of a flat panel speaker in the portable electronic device according to claim 8,
and in the gasket member, the first seal surface has the vibration. It is characterized in that the
diaphragm is supported by coming into contact with a substantially square annular area on the
back surface of the plate.
[0019]
The invention according to claim 10 relates to the mounting structure of the flat panel speaker in
the portable electronic device according to any one of claims 1 to 9, wherein the gasket members
are both via a frame-shaped double-sided pressure-sensitive adhesive sheet. , And are
respectively adhered to the diaphragm and the housing.
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[0020]
The invention according to claim 11 relates to the mounting structure of the flat panel speaker in
the portable electronic device according to claim 10, and the double-sided pressure-sensitive
adhesive sheet has a waterproof function.
[0021]
The invention according to claim 12 relates to the mounting structure of a flat panel speaker in
the portable electronic device according to any one of claims 1 to 11, wherein dust is prevented
from entering the inside of the gasket member. It is characterized in that a frame-shaped
dustproof cushion member is disposed.
[0022]
A portable electronic device according to the invention of claim 13 is characterized by including
a flat panel speaker mounting structure in the portable electronic device according to any one of
claims 1 to 12.
[0023]
The invention according to claim 14 is a flat panel speaker mounting method for attaching a flat
panel speaker that vibrates a diaphragm by an actuator and emits a sound wave to a housing of a
portable electronic device in which an opening is formed. According to the present invention, the
diaphragm is prepared by bonding a gasket member formed of a non-water-permeable flat elastic
member to the back surface, and the gasket member is bonded to the edge of the opening to
cover the opening. It is characterized in that it is attached to the housing through the gasket
member to prevent liquid from entering the housing from the opening.
[0024]
According to the configuration of the present invention, since the diaphragm is attached to the
housing through the gasket member formed of the non-permeable flat elastic member, the
diaphragm is reliably waterproofed without interfering with the vibration of the diaphragm. And
dustproof can be improved.
[0025]
By attaching the diaphragm to the housing through the gasket member made of a non-permeable
flat elastic member, the object of reliably improving the waterproofness and the dustproof
without interfering with the vibration of the diaphragm is realized. .
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[0026]
FIG. 1 is an exploded view of an upper unit of a mobile phone according to an embodiment of the
present invention, viewed from the surface side, and is an exploded perspective view showing a
configuration of the upper unit. FIG. FIG. 3 is an exploded perspective view showing the
configuration of the upper unit, FIG. 3 is a block diagram showing the configuration of the mobile
phone, and FIG. 4 is a configuration of the upper unit. 5 is a cross-sectional view taken along the
line A-A of FIG. 4, FIG. 6 is a cross-sectional view taken along the line B-B of FIG. 4, FIG. 7 is an
enlarged view of a portion C of FIG. 8 is a block diagram showing the configuration of the voice
output unit of the mobile phone, FIG. 9 is a plan view showing the configuration of the gasket
member of the voice output unit, and FIG. 10 is the same. It is a bottom view which shows the
state in which the same gasket member and actuator module were attached to the diaphragm.
[0027]
The mobile phone 1 of this example includes a foldable housing and has a data communication
function capable of browsing a home page by, for example, sending and receiving an e-mail or
connecting to the Internet in addition to the original call function. As shown in FIG. 1 to FIG. 3,
the upper unit 2 and the lower unit 3 can be opened and closed with each other, and one unit is
the other around the pivot axis orthogonal to the pivot axis for opening and closing. It is mutually
connected by the biaxial hinge part 4 rotatably with respect to a unit, and is comprised.
[0028]
As shown in FIGS. 1 to 3, the upper unit 2 drives, for example, an audio output unit 7 for
outputting a received voice and an audio output unit 7 to the upper case 6 constituting a foldable
flat case. A piezoelectric drive unit 8 for display, a display unit 9 including a liquid crystal display
device for displaying a function setting screen, a standby screen etc., and a light emitting It is
implemented and roughly configured.
The upper housing 6 is made of, for example, a die-cast product made of magnesium alloy, and
has a front case 12 constituting a front side and a rear cover 13 constituting a back side, and the
combined front case 12 and rear cover 13 The sound output unit 7, the display unit 9, and the
light emitting unit 11 are assembled in a state of being accommodated or attached by fitting or
by fastening with a fixing tool such as an internal screw or an external screw.
[0029]
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7
The front case 12 is roughly formed into a shape in which a side wall portion 16 is erected on
the periphery of a rectangular flat plate portion 15 having an opening 14 for exposing the
display screen of the liquid crystal display panel 41 formed at the center. There is.
In the flat plate portion 15, the upper surface of the edge portion 17 of the opening portion 14
provided on a side (inside) from the inner wall surface of the side wall portion 16 is mounted on
the diaphragm plate 33 via a gasket member 33 described later. It is considered to be 17 m in
height.
In addition, the rear cover 13 is roughly formed in a shape in which the side wall portion 19 is
provided upright on the peripheral edge of the rectangular flat plate portion 18.
[0030]
The lower unit 3 is, as shown in FIG. 3, a control unit 22 for controlling each component of the
cellular phone main body and a process executed by the control unit 22 in a lower case
constituting a flat case which can be folded. Storage unit 23 for storing programs, various data,
etc., radio communication unit 26 for transmitting and receiving radio waves via antenna 25 and
performing communication and data communication according to a predetermined protocol,
numbers and characters Operation unit 27 including a large number of various operation keys
and the like for performing an input operation of a speaker, a transmission unit 28 including a
microphone for inputting a transmission voice, and a ringer generation unit 29 for generating a
ringing tone at the time of an incoming call. Is implemented and schematically configured.
[0031]
As shown in FIGS. 1 to 10, the sound output unit 7 is made of, for example, a transparent
member made of acrylic resin, and has a diaphragm 31 also serving as a screen member for
protecting the liquid crystal display panel 41, and a diaphragm 31 having a piezoelectric
element. The actuator module 32 vibrates to emit sound waves, and the flat frame non-water
permeable gasket member 33 made of, for example, silicone rubber, for preventing the entry of
foreign matter such as dust and moisture into the upper housing 6. And a frame-shaped
dustproof cushion member 34 disposed inside the gasket member 33 and made of, for example,
urethane foam, for preventing the entry of dust into the inside and preventing adhesion of the
dust to the surface of the liquid crystal display panel 41. It is equipped.
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Here, the diaphragm 31 and the actuator module 32 constitute a flat panel speaker 35.
[0032]
The actuator module 32 receives the amplified drive signal via the piezoelectric drive unit 8
controlled by the control unit 22, converts the drive signal as an electrical signal into an acoustic
signal, and vibrates the diaphragm 31.
In this example, the actuator module 32 is bonded to a predetermined portion of the back
surface of the diaphragm 31 using, for example, a double-sided adhesive tape.
A cushion member 45 for protecting a flexible printed wiring board (hereinafter referred to as an
FPC (Flexible Printed Circuit)) is disposed on the back side of the actuator module 32.
[0033]
In addition, a light shielding material is applied to the outer area of the area corresponding to the
display screen area of the diaphragm 31.
The anti-vibration cushion member 34 is surrounded by the inner side of the gasket member 33
(in this example, by the inner wall surface 33a of the gasket member 33, the side is covered, the
upper part is covered by the diaphragm 31, and the liquid crystal display panel is below) 41) in
the space in which the display screen 41 is disposed) so as to surround the periphery of the
display screen area.
In this example, the diaphragm 31 is positioned such that the predetermined corner 31m of the
side wall surface 31a is in contact with the corresponding corner 16a formed on the side of the
opening 14 of the side wall 16 of the front case 12 And is disposed on the mounting surface 17
m via the gasket member 33.
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9
As shown in FIGS. 6 and 7, the gasket member 33 is bonded to the diaphragm 31 and the
mounting surface 17m of the front case 12 via the frame-shaped double-sided adhesive sheets
37 and 38, respectively.
[0034]
In the double-sided pressure-sensitive adhesive sheet 37 (38), as shown in FIG. 7, an acrylic
adhesive layer 37m (38m) and a silicon adhesive layer 37n (38n) are formed on both sides of a
substrate 37a (38a) made of PET. It has become.
The diaphragm 31 is thus attached to the front case 12 through the gasket member 33.
The gasket member 33 is made of, for example, silicone rubber having excellent weather
resistance.
The silicone rubber is selected from polydimethyl silicone rubber, methyl vinyl silicone rubber,
methyl phenyl silicone rubber, fluorosilicone rubber and the like.
The gasket member 33 has an upper seal surface 33 b and a lower seal surface 33 c disposed on
the diaphragm 31 side and the edge side of the opening 14, and the upper seal surface 33 b is
formed on the diaphragm 31 via the double-sided adhesive sheet 37. In the adhered state,
according to the vibration of the diaphragm 31, the diaphragm 31 is supported while being
relatively easily deformed at least along the thickness direction, and the lower seal surface 33c
surrounds the opening 14 of the front case 12 It is adhered to the mounting surface 17m via the
double-sided adhesive sheet 38 to prevent moisture from entering particularly into the upper
housing 6 from the opening 14.
The outer diameter of the gasket member 33 is set to be slightly smaller than that of the
diaphragm 31.
[0035]
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10
In the flat panel speaker mounting structure 36 of this example, the diaphragm 31 is attached in
a contact state to the actuator module 32 at a predetermined portion so that vibration is
transmitted, and a frame-shaped gasket member made of, for example, silicone rubber It is
attached to front case 12 via 33 and roughly configured.
Here, the gasket member 33 is bonded to the diaphragm 31 and the mounting surface 17m of
the front case 12 via the frame-shaped double-sided adhesive sheets 37 and 38, respectively.
Thus, the gasket member 33 supports the vibration plate 31 without disturbing the vibration
thereof, and prevents the intrusion of water or the like into the upper housing 6.
[0036]
The display unit 9 is disposed on the inner surface of the upper housing 6 and has, for example,
a transmissive liquid crystal display device.
The liquid crystal display device includes a liquid crystal display panel 41, a backlight device for
providing illumination light to the liquid crystal display panel 41, a drive circuit for driving the
liquid crystal display panel 41, and a holding frame 42 for holding the liquid crystal display
panel 41 and the backlight device. And has become.
The liquid crystal display panel 41 is, for example, a transmissive liquid crystal display panel
having a TFT (Thin Film Transistor) structure, and has a TFT substrate on which a large number
of TFTs and transparent pixel electrodes are formed. An opposing substrate fixed opposite to
each other with a colored layer (color filter) formed thereon, a liquid crystal layer sealed in the
gap, and a pair of deflection plates disposed on the outside of the TFT substrate and the opposing
substrate. Have.
[0037]
The backlight device includes a light source unit including a plurality of LEDs as a point light
source, a light guide plate which receives light emitted from the light source unit and emits
planar illumination light toward the liquid crystal display panel 41, and variations in luminance.
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And an optical member group including a diffusion sheet for correction and a prism sheet for
condensing illumination light incident from the light guide plate side, and the liquid crystal
display panel 41 is irradiated with illumination light from the back side to perform liquid crystal
display The observer is allowed to visually recognize the light transmitted through the panel 41.
An optical member group is disposed on the surface side (diaphragm 31 side) of the holding
frame 42, and the optical member group is sandwiched between the holding frame 42 and the
holding frame 42, for example, via a frame-shaped double-sided adhesive sheet. The liquid crystal
display panel 41 is fixed.
[0038]
On the back side (rear cover side) of the holding frame 42, a wiring board 43 having a
predetermined circuit pattern formed on an insulating substrate and having electronic
components mounted thereon is attached. The wiring board 43, the liquid crystal display panel
41 and the light source The units are each electrically connected via an FPC.
The liquid crystal display panel 41, the light source unit, the wiring board 43 and the like are
attached to the holding frame 42, and can be vertically held by the front case 12 and the rear
cover 13 constituting the upper case 6 using a fixing tool. Thus, it is stored in the upper case 6.
[0039]
The control unit 22 includes a CPU (central processing unit) and the like, executes various
processing programs stored in the storage unit 23, and uses various registers and flags secured
in the storage unit 23 to configure the respective units. It controls and performs communication
control processing, display and operation control processing, etc. The storage unit 23 is
composed of a semiconductor memory such as a ROM, a RAM, etc., and is a program storage
storing a communication control processing program executed by the control unit 22, a display /
operation control processing program, various processing programs such as a browser, a mailer
etc. The storage unit 23 includes an area and an information storage area in which various
information such as setting information of each function, communication history information,
telephone directory information, text message information, moving image file with voice and the
like are stored. Various registers and flags used by the unit 22 at the time of program execution
are secured.
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[0040]
The wireless communication unit 26 includes an RF circuit, a modulation / demodulation circuit,
a baseband processing circuit, etc., modulates voice and data and transmits it as a radio wave via
the antenna 25 and receives a radio wave via the antenna 25 It is used to demodulate to voice
and data, and to make calls and data communications according to a predetermined protocol.
[0041]
The operation unit 27 activates a browser to select a browser mode selection key for browsing a
home page, a determination key used to determine an operation, a menu key for displaying an
operation menu, and an input for switching a character input mode Mode switching keys,
phonebook keys for registering and searching phonebook entries, call start keys used for making
voice calls, clear keys for returning an operation to the previous state, and various types of
power on / off A function key group including a power key used to cancel the operation, a cursor
key for moving the cursor on the display screen displayed on the display unit 9 in the vertical
and horizontal directions, and, for example, for inputting numbers and the like It has a ten key
group.
[0042]
As shown in FIGS. 1 and 2, the biaxial hinge portion 4 is rotatably supported by a base plate 51
attached to the upper housing 6 and fixed to the upper housing 6 and the base plate 51. And the
rotation shaft 52 whose front end protrudes parallel to the display screen of the display unit 9 of
the upper unit 2 and the rotation shaft 52 at the front end of the rotation shaft 52 at a right
angle And a pivot shaft portion 53 that is disposed and rotatably supported.
The upper unit 2 and the lower unit 3 are folded by rotation of the upper housing 6 with respect
to the lower housing around the rotation shaft 53, and the lower housing with respect to the
upper housing 6 around the rotation shaft 52 The upper unit 2 is rotated while the plane
including the display surface of the upper unit 2 intersects with the plane including the operation
surface of the lower unit 3 by the rotation.
[0043]
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In order to assemble the mobile phone 1 of this example, first, the gasket member 33 is adhered
to the peripheral edge of the back surface of the diaphragm 31 via the frame-shaped doublesided adhesive sheet 37, and the side facing the diaphragm 31 of the gasket member 33 Stick the
double-sided adhesive sheet 38 to the
Next, the actuator module 32 is adhered to a predetermined portion of the back surface of the
diaphragm 31 using, for example, a double-sided adhesive tape. Next, the diaphragm 31 is
positioned so that the predetermined corner 31m of the side wall surface 31a is in contact with
the corner 16a of the side wall 16 of the corresponding front case 12, and the double-sided
adhesive sheet 38 is used. The gasket member 33 is adhered to the mounting surface 17 m of
the front case 12, and the diaphragm 31 is attached to the front case 12.
[0044]
Further, in a state in which the optical member group is sandwiched between the holding frame
42 and the surface side of the holding frame 42 (the side to which the diaphragm 31 is attached),
the liquid crystal display panel 41 via, for example, a frame-shaped double-sided adhesive sheet.
Fix the Next, the dustproof cushion member 34 is attached to the holding frame 42 so as to be
disposed on the periphery of the liquid crystal display panel 41. Next, the wiring substrate 43 is
stacked on the back surface side and assembled, and the end of the FPC is connected to the
connector disposed at the end of the wiring substrate 43. Next, the front case 12 is assembled
from the diaphragm 31 side to the holding frame 42 to which the liquid crystal display panel 41,
the light source unit, the wiring board 43 and the like are attached.
[0045]
Next, a component group to which the diaphragm 31, the actuator module 32, the gasket
member 33 and the like are attached is attached to the front case 12, and the actuator module
32 and the wiring substrate 43 are connected by connectors. Next, the mobile phone 1 is
assembled by combining and fitting the rear cover 13 or by fastening with a fixing tool such as
an internal thread or an external thread. By this, the diaphragm 31 abuts on the actuator module
32 at a predetermined portion, and transmission of vibration becomes possible.
[0046]
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In the mobile telephone 1 assembled in this manner, for example, when there is an incoming call
in a state where the housing is open, the control unit 22 controls the ringer generation unit 29 to
generate a ringing tone and control the light emitting unit 11. Light the LED, and notify the
incoming call. Next, when the call start key of the operation unit 27 is pressed, a call is started,
and a voice from the other party is output from the voice output unit 7. That is, the control unit
22 controls the piezoelectric drive unit 8 so that the amplified drive signal is supplied to the
actuator module 32. The actuator module 32 receives the amplified drive signal, converts the
drive signal as an electrical signal into an acoustic signal, and vibrates the diaphragm 31. Sound
waves are emitted directly from the diaphragm 31.
[0047]
Even if the operator (user) does not place the diaphragm 31 in his / her ear, for example, the
mobile phone 1 may be directed to the front to listen to the received voice and to speak to the
transmitting unit 28 to make a call. it can. Here, when an image (moving image or still image) is
added to the received data, the operator can make a call while looking at the display screen of
the display unit 9. In addition, for example, when executing a program downloaded from a site (a
moving image file with sound, etc.), an image is displayed on the display unit 9 with the case
opened, and the sound is a diaphragm of the sound output unit 7 Emit from 31 Also, when using
the e-mail reading function, sound is emitted from the diaphragm 31.
[0048]
Further, by supporting the gasket member 33 without disturbing the vibration of the diaphragm
31, the sound is surely emitted from the diaphragm 31, and the operator (user) can clearly make
the sound even if they are relatively separated. I can listen to it. In addition, the upper casing is
adhered to the diaphragm 31 and the mounting surface 17m of the front case 12 through the
double-sided pressure-sensitive adhesive sheets 37 and 38, respectively. Prevent entry of
moisture etc. into the body 6 inside. Further, the dustproof cushion member 34 disposed inside
the gasket member 33 also prevents the entry of dust, and for example, adhesion of dust to the
liquid crystal display panel 41 is prevented.
[0049]
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As described above, according to the configuration of this example, since the gasket member 33
supports the diaphragm 31 without interfering with the vibration of the diaphragm 31, the voice
is surely emitted from the diaphragm 31, and the operator can be relatively separated. Can hear
the voice clearly. In addition, since the impermeable gasket member 33 having excellent weather
resistance is bonded to the diaphragm 31 and the mounting surface 17m of the front case 12
through the double-sided adhesive sheets 37 and 38, respectively, the upper housing 6 It is
possible to prevent the ingress of moisture etc. into the inside. By using silicone rubber having
high weather resistance as the material of the gasket member 33, the deterioration of the
waterproof function can be suppressed by the secular change, and it is suitable to be applied to a
cellular phone which is often used outdoors.
[0050]
Further, the dustproof cushion member 34 disposed inside the gasket member 33 can also
prevent the entry of dust, for example, adhesion of the dust to the liquid crystal display panel 41
can be prevented. In addition, the operator can listen to the received voice with, for example, the
mobile phone 1 facing the front without having the diaphragm 31 in the ear, so as in the prior
art, from the position of the sound hole While being able to listen to the received voice reliably
and clearly without being separated and the voice becoming unclear, making the ear part away
from the mobile phone 1 and generating it toward the transmitter part 28 to make a call Can. In
addition, when an image (moving image or still image) is added, the operator can listen to the
sound while looking at the display screen of the display unit 9. In addition, adoption of a flat
panel speaker can contribute to thinning and downsizing of the device.
[0051]
The embodiment of the present invention has been described in detail with reference to the
drawings, but the specific configuration is not limited to this embodiment, and design changes
may be made without departing from the scope of the present invention. Is also included in the
present invention. For example, in the above-mentioned embodiment, although the case where
the diaphragm also serves as the screen member of the display unit has been described, it may
be provided exclusively. In this case, the diaphragm may not be transparent. The material of the
gasket member is not limited to silicone rubber, and may be selected from fluorine rubber,
polysulfide rubber, and the like as rubber having weather resistance. Not only rubber but also
synthetic resin such as polyacetal which can be elastically deformed by relatively small load may
be used. Further, the housing may be made of metal or resin. In addition, not only dustproof and
waterproofing is achieved by the flat panel speaker mounting structure in which the diaphragm
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is attached to a front case having an opening formed through a gasket member made of, for
example, silicone rubber and schematically configured. By being sealed, it is possible to maintain
airtightness. Generally, a lid-like member is attached to a housing of an electronic device in which
an opening is formed so as to cover the opening through a gasket member made of, for example,
silicone rubber attached to the edge of the opening. Thus, the airtightness at the attachment site
of the lid member is maintained. Further, although the case where the audio output unit 7 is
provided at one place has been described, it may be provided at two or more places. In this case,
the installation position may be the upper unit or the lower unit.
[0052]
In addition, an electronic camera unit may be added to have a photographing function and a
videophone function. In this case, a pseudo shutter sound may be generated from the audio
output unit 7 at the time of shooting. In addition, at the time of an incoming call, the volume may
be adjusted, and then the ring tone may be output from the voice output unit 7. Further, the
diaphragm may be adhered to the gasket member directly through the adhesive layer without
using the double-sided adhesive sheet, or may be adhered by heat welding.
[0053]
In addition, the gasket member may be attached to the front case by a method other than
bonding. Further, although the case where the pivot shaft portion 52 is parallel to the main
surface of the upper housing 6 has been described, it may be perpendicular to the main surface
of the upper housing 6. In this case, the upper unit 2 is rotated while the display surface of the
upper unit 2 and the operation surface of the lower unit 3 maintain a substantially parallel
relationship. Further, the present invention can be applied not only to a two-axis hinge but also to
a foldable mobile phone capable of only opening and closing, and to a straight type mobile phone
other than a foldable type.
[0054]
The portable electronic device can be applied not only to mobile phones but also to simple
mobile phones (PHS) terminals, personal digital assistants (PDAs) and portable computers.
[0055]
11-05-2019
17
It is the figure which disassembled the upper unit of the mobile telephone which is one Example
of this invention, and was seen from surface side, Comprising: It is a disassembled perspective
view which shows the structure of the same upper unit.
It is the figure which decomposed | disassembled the upper unit of the mobile telephone, and
was seen from the back side, Comprising: It is a disassembled perspective view which shows the
structure of the same upper unit. It is a block diagram which shows the structure of the mobile
phone. It is a top view which shows the structure of the upper unit. It is sectional drawing along
the AA of FIG. It is sectional drawing along the BB line of FIG. It is an expanded sectional view
which expands and shows the C section of FIG. It is a block diagram which shows the structure of
the audio | voice output part of the mobile telephone. It is a top view which shows the structure
of the gasket member of the audio | voice output part. It is a bottom view which shows the state
in which the same gasket member and actuator module were attached to the same diaphragm. It
is explanatory drawing for demonstrating a prior art. It is explanatory drawing for demonstrating
a prior art. It is explanatory drawing for demonstrating a prior art.
Explanation of sign
[0056]
Reference Signs List 1 mobile phone (portable electronic device) 2 upper unit 3 lower unit 4 2axis hinge unit 6 upper case 7 audio output unit 9 display unit (display means) 12 front case 13
rear cover 14 opening 31 diaphragm 32 actuator module (actuator 33. Gasket member 33a
Inner wall surface 33b Upper seal surface (first seal surface) 33c Lower seal surface (second seal
surface) 34 Dustproof cushion member 35 Flat panel speaker 36 Flat panel speaker mounting
structure 37, 38 Double-sided adhesive sheet 41 Liquid crystal display panel
11-05-2019
18
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