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JPH11175191

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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 JPH11175191
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
portable information device such as a portable computer, and more particularly to a structure for
holding a speaker in its housing.
[0002]
2. Description of the Related Art In recent years, technological innovation of portable computers
has been remarkable, and the application to multimedia in which video and sound are integrated
and utilized is expanding. The multimedia compatible portable computer is provided with a
speaker for outputting sound data. The speaker includes a metal speaker frame supporting the
diaphragm and a front cover supported by the speaker frame, and has a flat disk shape as a
whole.
[0003]
The speaker is housed inside a housing of a portable computer together with peripheral devices
such as a hard disk drive and a circuit board. The housing has an upper wall on which a
keyboard is disposed, and a speaker support is formed on the inner surface of the upper wall.
The speaker support portion has a cylindrical wall portion along the outer peripheral portion of
the speaker frame, and a concave portion in which the outer peripheral portion of the speaker
01-05-2019
1
frame is fitted is formed at the tip end portion of the wall portion.
[0004]
A speaker holder made of synthetic resin is screwed to the speaker support. The speaker holder
cooperates with the wall of the speaker support to sandwich the outer periphery of the speaker
frame, whereby the speaker is held by the housing. The upper wall of the housing has a number
of sound emission holes at positions facing the front cover of the speaker so that the sound
output from the speaker can be emitted to the outside of the housing through these holes. It has
become.
[0005]
By the way, in the conventional portable computer, as a measure against the noise of the speaker,
the speaker is connected to the ground. Specifically, the inner surface is covered with a
conductive plating layer by applying electroless plating to the inner surface of the housing
including the speaker supporting portion, and the above-mentioned speaker frame is brought
into contact with the plating layer.
[0006]
However, in the conventional speaker, the outer peripheral portion of the speaker frame is
merely sandwiched between the speaker support portion and the speaker holder, and the
speaker support portion and the speaker holder are injection molded products of synthetic resin
materials. Therefore, there is a possibility that distortion or warpage may occur due to shrinkage
of the resin material at the time of injection molding.
[0007]
For this reason, even when the outer peripheral portion of the speaker frame is sandwiched
between the speaker support portion and the speaker frame, a gap may be generated between
the outer peripheral portion of the speaker frame and the speaker support portion.
As a result, the contact state between the speaker frame and the plating layer becomes unstable,
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2
and there is a problem that the measures against noise of the speaker become insufficient.
[0008]
In addition, when a gap is generated between the speaker frame and the recess as in the related
art, the speaker can not be firmly held in the housing, and the speaker tends to be loose. Then,
since the speaker is accompanied by the vibration of the diaphragm when outputting the sound,
the speaker itself vibrates and an unpleasant noise is generated from the case, and the noise may
be mixed into the regular sound to deteriorate the sound quality. There is.
[0009]
A first object of the present invention is to provide a portable information device which can
strengthen the ground connection of a speaker and can effectively improve the noise reduction
of the speaker.
[0010]
A second object of the present invention is to obtain a portable information device capable of
reliably preventing the vibration of a speaker and capable of enhancing the sound quality.
A third object of the present invention is to provide a portable information device capable of
reliably preventing the vibration of the speaker and effectively improving the sound quality while
effectively enhancing the noise reduction of the speaker.
[0011]
According to the first aspect of the present invention, there is provided a portable information
device comprising a speaker support and a conductive case; and the case A speaker having a
metal speaker frame installed in the speaker supporting portion; a metal supported by the
housing and forcibly holding the speaker frame to the housing by forcibly pressing the speaker
frame against the speaker supporting portion Speaker holder; and And the said speaker holder
has a contact part which also has the spring property which elastically contacts a speaker frame,
It is characterized by electrically conducting a speaker and a housing | casing via this speaker
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3
holder. .
[0012]
According to this configuration, in the metal speaker holder, since the contact portion having a
spring property is in elastic contact with the speaker frame of the speaker, the contact state
between the speaker holder and the speaker frame is stabilized. Therefore, even if dimensional
tolerance occurs in the housing, the speaker can be reliably grounded to the housing, and the
ground connection of the speaker can be strengthened.
[0013]
In order to achieve the second object, a portable information device described in claim 7 is a
speaker having a ring-shaped outer peripheral portion; and a case including a speaker support
wall for supporting the outer peripheral portion of the speaker; A cushion material made of a
flexible rubber-like elastic body interposed between the outer peripheral portion of the speaker
and the tip end portion of the speaker support wall; supported by the housing and the outer
peripheral portion of the speaker through the cushion material And a metal speaker holder for
holding the speaker in a housing by pressing against the support wall.
[0014]
The speaker holder has a first end detachably engaged with the housing, a second end fixed to
the housing via the fixing tool, and the first end and the first end. And a contact portion which is
located between the two ends and which is in contact with the speaker and also has a spring
property.
The contact portion of the speaker holder elastically contacts the speaker when the first end of
the speaker holder is locked to the housing and the second end is fixed to the housing via the
fixing tool. And, in cooperation with the above-mentioned cushioning material, the speaker is
elastically held and held.
[0015]
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4
According to this configuration, the speaker frame is pressed against the cushioning material by
the contact portion of the speaker holder, and is elastically supported by the speaker supporting
wall via the cushioning material. Therefore, even if dimensional tolerance occurs in the speaker
support wall, the cushion material is deformed to absorb the dimensional tolerance, so that no
gap is generated between the speaker frame and the speaker support wall, and vibration of the
speaker is generated. Can be reliably prevented. Therefore, it is possible to prevent the
generation of abnormal noise from the casing accompanying the vibration of the speaker and to
improve the sound quality at the time of sound output.
[0016]
In order to achieve the third object, a portable information device described in claim 11 is a
speaker including a metal speaker frame having a ring-shaped outer peripheral portion; and a
speaker support for supporting the outer peripheral portion of the speaker A housing having a
wall and having conductivity; a cushioning material made of a flexible rubber-like elastic body
interposed between the outer peripheral portion of the speaker frame and the tip of the speaker
support wall; A metal speaker holder which is supported and holds the speaker in a housing by
pressing the outer peripheral portion of the speaker frame against the speaker support wall via a
cushioning material. The speaker holder has a first end detachably engaged with the housing, a
second end fixed to the housing via a screw, and the first end and the second end. And a contact
portion which is located between the end portion of the connector and the spring and which
contacts the speaker frame. The contact portion of the speaker holder contacts the speaker frame
when the first end of the speaker holder is locked to the housing and the second end is fixed to
the housing via a screw, and the cushioning material is And a speaker is elastically held by
holding, and the speaker and the housing are electrically conducted via the speaker holder.
[0017]
According to this configuration, the metallic speaker holder has a resilient contact portion
resiliently in contact with the speaker frame of the speaker, so the contact state between the
speaker holder and the speaker frame is stabilized. Therefore, even if a dimensional tolerance
occurs in the speaker support portion of the housing, the speaker can be reliably grounded to the
housing, and the ground connection of the speaker can be strengthened.
[0018]
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5
Moreover, since the speaker frame is pressed against the cushioning material by the spring
property of the contact portion and is supported by the speaker supporting wall via the
cushioning material, even if dimensional tolerance occurs in the speaker supporting wall, the
cushioning material Is deformed to absorb dimensional tolerances. For this reason, a gap which
promotes the vibration of the speaker does not occur between the speaker frame and the speaker
support wall, and it is possible to reliably prevent the generation of abnormal noise from the
housing accompanying the vibration of the speaker.
[0019]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present
invention will be described below with reference to FIGS. 1 to 8 applied to a portable computer.
FIG. 1 discloses a multimedia compatible book-type portable computer 1. The portable computer
1 comprises a computer body 2 and a display unit 3 supported by the computer body 2.
[0020]
The computer main body 2 has a case 4 made of synthetic resin. The housing 4 is composed of a
lower housing 5 and an upper housing 6 connected to the lower housing 5 and has a flat box
shape as a whole.
[0021]
The upper housing 6 has a flat upper wall 7. The upper wall 7 is provided with a palm rest 8 and
a keyboard attachment portion 9. The palm rest 8 extends in the width direction of the housing 4
at the front half of the upper wall 7. The keyboard attachment portion 9 is located behind the
palm rest 8. The keyboard attachment portion 9 is configured by a recess that is recessed toward
the inside of the housing 4.
[0022]
That is, as shown in FIG. 2, the keyboard attachment portion 9 has an opening 10 opened in the
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upper wall 7 of the housing 4 and four peripheral walls 11 extending downward from the
opening edge of the opening 10. A bottom wall 12 connected to the lower end of the peripheral
wall 11 is provided. The opening 10 has a rectangular opening shape that covers substantially
the entire width of the housing 4. The peripheral wall 11 extends along the width direction and
the depth direction of the housing 4. The bottom wall 12 is in the form of a flat plate and faces
the opening 10. A pair of communication holes 13 a and 13 b are opened at corner portions
defined by the peripheral wall 11 and the bottom wall 12 located at the rear end of the opening
10. The communication holes 13 a and 13 b are disposed apart from each other in the width
direction of the housing 4, and the keyboard attachment portion 9 is continued to the inside of
the housing 4 through the communication holes 13 a and 13 b.
[0023]
A keyboard 15 is installed in the keyboard attachment portion 9. The keyboard 15 is made of a
synthetic resin keyboard panel 16 (shown in FIG. 6A), a large number of keys 17 disposed on the
upper surface of the keyboard panel 16, and a metal that covers the lower surface of the
keyboard panel 16. And a shield plate 18.
[0024]
The keyboard panel 16 has a rectangular shape that is sized to fit into the keyboard attachment
portion 9. The key 17 is exposed above the housing 4 through the opening 10. The shield plate
18 is for preventing the switching noise accompanying the operation of the key 17 from leaking
to the inside of the housing 4. The shield plate 18 covers the entire lower surface of the
keyboard panel 16 and is superimposed on the bottom wall 12 of the keyboard attachment
portion 9.
[0025]
The keyboard 15 is removably held by the keyboard attachment 9 via the keyboard holder 19.
The keyboard holder 19 is removably fitted between the peripheral wall 11 connected to the rear
end of the opening 10 and the keys 17 in the last row, and sandwiches the rear edge of the
keyboard panel 16 with the bottom wall 12. There is.
01-05-2019
7
[0026]
The keyboard 15 is electrically connected to a circuit board (not shown) housed inside the
housing 4 via a flexible printed wiring board 20. As shown in FIG. 1 and FIG. 2, an upward
projecting protrusion 23 is formed at the rear end of the upper wall 7 of the housing 4. The
protrusion 23 extends in the width direction of the housing 4 at the rear of the keyboard 15. The
projecting portion 23 has a pair of display support portions 24a and 24b. The display support
portions 24 a and 24 b are formed in a recess that is continuous with the upper wall 7 of the
housing 4 and are disposed apart from each other in the width direction of the housing 4.
[0027]
As shown in FIG. 1, the display unit 3 includes a flat box-like display housing 26 and a liquid
crystal display device 27 accommodated in the display housing 26. The display housing 26 has a
front surface on which the display opening 28 is formed, and the display screen 27 a of the
liquid crystal display device 27 is exposed to the outside of the display housing 26 through the
display opening 28.
[0028]
The display housing 26 has a pair of legs 29a, 29b. The leg portions 29a and 29b are guided to
the display support portions 24a and 24b, and are rotatably connected to the housing 4 via a
hinge device (not shown). Therefore, the display unit 3 is selectively rotated across the closed
position in which the display unit 3 is folded to cover the palm rest 8 and the keyboard 15, and
the open position in which the palm rest 8, the keyboard 15 and the display screen 27a are
exposed. It is supposed to be moved.
[0029]
As shown in FIG. 1, the upper housing 6 of the housing 4 has a pair of sound emitting portions
31a, 31b. The sound emitting portions 31 a and 31 b are located between the keyboard
attaching portion 9 and the projecting portion 23 in the upper wall 7 and are spaced apart from
each other in the width direction of the housing 4. The sound emitting units 31a and 31b have a
large number of through holes 32 connected to the inside of the housing 4 as shown in FIG. 3
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and FIG. The through holes 32 are arranged in a matrix.
[0030]
Inside the housing 4, a pair of speakers 35 a and 35 b for outputting a sound is accommodated.
As shown in FIG. 4 and FIG. 6A, the speakers 35a and 35b cover a speaker frame 36 for
supporting a diaphragm (not shown) and the diaphragm, and a front cover serving as an output
end of sound. 37 and has a generally flat disc shape. The speaker frame 36 and the front cover
37 are each made of a metal material.
[0031]
The speaker frame 36 is provided with a ring-shaped outer peripheral wall 36 a and a diskshaped bottom wall 36 b connected to the outer peripheral wall 36 a. At a substantially central
portion of the bottom wall portion 36b, a bulging portion 36c that protrudes downward is
formed. The bulging portion 36c has a flat bottom surface 36d. The front cover 37 is fixed to the
outer peripheral wall 36 a of the speaker frame 36. A positioning tongue 38 is formed on the
outer peripheral edge of the front cover 37, and the tongue 38 penetrates the outer peripheral
wall 36a and protrudes outward in the radial direction of the speaker frame 36. .
[0032]
As shown in FIG. 1 and FIG. 2, the speakers 35a and 35b are disposed apart from each other in
the width direction of the housing 4 so as to correspond to the sound emitting portions 31a and
31b. The speakers 35a and 35b are supported by the upper housing 6 below the sound emitting
portions 31a and 31b. Since the support structure of these speakers 35a and 35b is mutually
common, it demonstrates on behalf of the left speaker 35a.
[0033]
As shown in FIGS. 4 and 7, the upper wall 7 of the upper housing 6 has a speaker support
portion 40. The speaker support portion 40 is integrally formed on the inner surface of the
upper wall 7 facing the inside of the housing 4 and is adjacent to the rear end of the keyboard
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attachment portion 9. The speaker support portion 40 includes a ring-shaped speaker support
wall 41. The speaker support wall 41 extends downward from the inner surface of the upper wall
7, and a part of the speaker support wall 41 is continued to the peripheral wall 11 at the rear
end of the keyboard attachment portion 9. The diameter of the speaker support wall 41 is set to
be substantially equal to the diameter of the speaker frame 36, and the through hole 32 is
opened in a portion surrounded by the speaker support wall 41.
[0034]
First to third guide walls 43 a to 43 c are disposed around the speaker support wall 41. The first
to third guide walls 43 a to 43 c project downward more than the lower end of the speaker
support wall 41.
[0035]
The first guide wall 43 a faces the peripheral wall 11 at the rear end of the keyboard attachment
portion 9. The peripheral wall 11 has a guide groove 44 opened downward. The guide groove 44
corresponds to the tongue piece 38 of the speaker 35a, and by inserting the tongue piece 38 into
the guide groove 44, the speaker support wall 41 is positioned in the circumferential direction
with respect to the speaker support wall 41. There is. The second and third guide walls 43b and
43c are disposed between the first guide wall 43a and the peripheral wall 11 so as to sandwich
the speaker 35a in the radial direction. Each of the guide walls 43 b and 43 c has a projection 45
in contact with or adjacent to the outer peripheral wall 36 a of the speaker frame 36.
[0036]
Further, a boss portion 48 having a screw hole 47 and a guide projection 49 are integrally
formed on the inner surface of the upper wall 7. The boss portion 48 and the guide protrusion
49 extend downward from the inner surface of the upper wall 7. The bosses 48 and the guide
protrusions 49 are arranged outside the speaker support wall 41 so as to face each other in the
radial direction of the speaker support wall 41. The guide projection 49 is adjacent to the
peripheral wall 11 at the rear end of the keyboard attachment portion 9 and the one
communication hole 13 a.
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[0037]
As shown in FIG. 6, the speaker 35 a is installed on the speaker support portion 40 in a posture
in which the front cover 37, which is an output end of sound, faces the upper wall 7. At this time,
a ring-shaped cushioning material 51 is interposed between the outer peripheral wall 36 a of the
speaker frame 36 and the tip of the speaker support wall 41. The cushioning material 51 is made
of a flexible rubber-like elastic body. The cushioning material 51 has an extension 51a extended
so as to enter the inside of the speaker support wall 41, and the front cover 37 of the speaker
35a is surrounded by the cushioning material 51.
[0038]
Further, the inner surface of the housing 4 is subjected to electroless plating. Thereby, the inner
surface of the housing 4 including the upper wall 7 is covered with the conductive layer 53 as
shown in FIG. 6B, and the conductive layer 53 is the boss portion 48 of the speaker support
portion 40 or the like. The guide projection 49 is continuously covered. Therefore, the housing 4
has conductivity due to the presence of the conductive layer 53.
[0039]
The speaker 35 a is held by the speaker support 40 via the speaker holder 55. The speaker
holder 55 is made of a thin sheet metal material, and has a band shape extending in the radial
direction of the speaker 35a. The speaker holder 55 has first and second end portions 56a and
56b, and a contact portion 56c located between the first and second end portions 56a and 56b.
[0040]
The first end 56 a is inserted into one communication hole 13 a of the upper housing 6, and the
first end 56 a is in contact with the conductive layer 53 of the housing 4. The first end 56 a has
an engagement hole 58. The guide projection 49 of the speaker support portion 40 is fitted in
the engagement hole 58, and by this fitting, the first end 56a of the speaker holder 55 and the
communication hole 13a are positioned. .
01-05-2019
11
[0041]
The second end 56 b is superimposed on the end face of the boss 48 of the speaker support 40.
The second end 56 b has a communication hole 59 connected to the screw hole 47 of the boss
48. The second end 56 b is fixed to the boss 48 by screwing the screw 60 as a fixing tool into the
screw hole 59 and screwing the screw 60 into the screw hole 47. The second end 56 b is in
contact with the conductive layer 53 of the housing 4.
[0042]
The contact portion 56 c faces the bulging portion 36 c of the speaker frame 36. The contact
portion 56c has bent portions 61a and 61b bent in a crank shape at portions connected to the
first and second end portions 56a and 56b. The contact portion 56c extends between the boss
portion 48 and the peripheral wall 11 of the keyboard attachment portion 9 via the first and
second end portions 56a and 56b. Therefore, the contact portion 56c has elasticity such that it
can be elastically deformed in a direction in which the contact portion 56c is in contact with and
separated from the bulging portion 36c of the speaker frame 36 with the bending portions 61a
and 61b as a supporting point.
[0043]
The contact portion 56 c of the speaker holder 55 has a convex portion 62. The convex portion
62 protrudes toward the bulging portion 36c of the speaker frame 36 between the bending
portions 61a and 61b, and the diameter of the convex portion 62 is far from the diameter of the
bottom surface 36d of the bulging portion 36c. It is determined to be small. Therefore, the
convex portion 62 locally contacts the bottom surface 36d of the bulging portion 36c due to the
spring property of the contact portion 56c, and the speaker 35a moves in the direction of the
speaker support wall 41 via the cushion material 51 by this contact. It is pressed.
[0044]
Therefore, the speaker holder 55 elastically sandwiches and holds the outer peripheral wall
portion 36 a of the speaker frame 36 in cooperation with the cushion material 51, and
electrically conducts the speaker 35 a and the upper housing 6. .
01-05-2019
12
[0045]
The speaker 35a has a lead wire 64, and the lead wire 64 is connected to the circuit board.
A procedure for fixing the speakers 35 a and 35 b to the speaker support portion 40 of the
upper housing 6 in the portable computer 1 having such a configuration will be described.
[0046]
As shown in FIGS. 4 and 8, first, the upper housing 6 is turned over to expose the speaker
support 40. Next, the cushioning material 51 is fitted into the speaker supporting wall 41 of the
speaker supporting portion 40, and the outer peripheral wall 36 a of the speaker frame 36 is
superimposed on the cushioning material 51. At this time, the speaker 35a superimposes the
front cover 37 on the cushioning material 51 in a posture in which the front cover 37 is directed
to the inner surface of the upper wall 7, and inserts the tongue 38 into the guide groove 44 of
the first guide wall 43a.
[0047]
Subsequently, the first end 56 a of the speaker holder 55 is inserted into the communication hole
13 a of the peripheral wall 11, the engagement hole 58 is aligned with the guide projection 49,
and the guide projection 49 is inserted into the engagement hole 58. , Position the first end 56 a
relative to the speaker support 40. At the same time, the second end 56 b of the speaker holder
55 is superimposed on the end face of the boss 48 and fixed to the boss 48 via the screw 60.
[0048]
Thus, the speaker holder 55 is fixed to the speaker support portion 40, and the convex portion
62 of the contact portion 56c elastically abuts on the bottom surface 36d of the speaker frame
36. As a result, the speaker 35 a is pressed toward the speaker support portion 40, and the outer
peripheral wall 36 a of the speaker frame 36 is pressed against the cushion material 51.
Therefore, the speaker 35 a is held by the speaker support portion 40 in a state of being
elastically held by the cushion material 51 and the contact portion 56 c of the speaker holder 55.
01-05-2019
13
[0049]
According to such a portable computer 1, in the state where the speaker holder 55 is attached to
the speaker support portion 40, the contact portion 56c having a spring property elastically
contacts the bottom surface 36d of the speaker frame 36, and the speaker 35a is supported by
the speaker It is forced toward the wall 41. Therefore, the contact state between the speaker
holder 55 and the speaker frame 36 is stable, and the speaker 35a can be reliably grounded to
the housing 4 even if a dimensional tolerance occurs in the speaker support wall 41 of the
speaker support portion 40. .
[0050]
Therefore, the ground connection of the speaker 35a can be strengthened, and for example,
when communication is performed by connecting a mobile phone to the portable computer 1,
noise occurs even if the antenna of the mobile phone is positioned near the speaker 35a. It
becomes difficult.
[0051]
Further, according to the above configuration, the speaker frame 36 is pressed against the
cushioning material 51 by the spring property of the contact portion 56c, and is elastically
supported by the speaker support wall 41 via the cushioning material 51. Even if a dimensional
tolerance occurs in the support wall 41, the cushion material 51 is deformed to absorb the
dimensional tolerance.
Therefore, there is no gap between the speaker frame 36 and the speaker support wall 41 for
promoting the vibration of the speakers 35a and 35b, and abnormal noise from the housing 4
accompanying the vibration of the speakers 35a and 35b. The occurrence can be reliably
prevented. Therefore, the sound quality of the sound output from the speakers 35a and 35b is
improved, and high quality sound can be obtained.
[0052]
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14
Moreover, in a state where the speakers 35a and 35b are fixed to the speaker support portion
40, the front cover 37 located at the output end of the sound faces the through holes 32 of the
sound emitting portions 31a and 31b, and the front cover 37 Surrounded by 51. For this reason,
the sound output from the speakers 35a and 35b hardly leaks to the inside of the housing 4,
which also contributes to the improvement of the sound quality.
[0053]
The present invention is not limited to the first embodiment, and FIG. 9 shows a second
embodiment of the present invention. The configuration of the speaker holder 55 of this second
embodiment is different from that of the first embodiment, and the basic configuration of the
other portable computer 1 is the same as that of the first embodiment. . Therefore, in the second
embodiment, the same components as those in the first embodiment are denoted by the same
reference numerals, and the description thereof is omitted.
[0054]
As shown in FIG. 9, the first end 56 a of the speaker holder 55 is integrally provided with an
extension 71 extending toward the keyboard attachment 9. The extension portion 71 is in the
form of a flat plate, and passes below the keyboard holder 19 and is superimposed on the bottom
wall 12 of the keyboard attachment portion 9. Under the present circumstances, the bottom wall
12 has the groove part 72, and the said extension part 71 has entered in this groove part 72. As
shown in FIG. Therefore, the extension portion 71 is substantially flush with the bottom wall 12,
and the shield plate 18 of the keyboard 15 is in contact with the upper surface of the extension
portion 71.
[0055]
According to such a configuration, since the extension 71 of the speaker holder 55 is in contact
with the shield plate 18 of the keyboard 15, the shield plate 18 and the housing 4 are electrically
conducted via the speaker holder 55. Can. Therefore, the ground connection of the keyboard 15
can be strengthened, and the shield function of the shield plate 18 can be enhanced.
01-05-2019
15
[0056]
In the above embodiment, the inner surface of the synthetic resin case is electrolessly plated to
impart conductivity to the case, but the present invention is not limited thereto. Instead, for
example, the entire case may be made of a conductive metal material.
[0057]
According to the first aspect of the present invention, the contact state between the speaker
holder and the speaker frame is stable and good. Therefore, even if a dimensional tolerance
occurs in the speaker support portion of the housing, the speaker is It can be grounded on the
body securely.
Therefore, the ground connection of the speaker can be strengthened, and noise
countermeasures for the speaker can be effectively enhanced.
[0058]
According to the invention of claim 7, since the speaker frame is elastically supported by the
speaker support wall via the cushioning material, even if a dimensional tolerance occurs in the
speaker supporting wall, the dimensions are changed by the deformation of the cushioning
material. Tolerance can be absorbed. Therefore, there is no gap between the speaker frame and
the speaker support wall that promotes the vibration of the speaker, and the generation of
abnormal noise from the case accompanying the vibration of the speaker is prevented, and the
sound is output. Sound quality can be improved.
[0059]
According to the invention of claim 11, since the contact state between the speaker holder and
the speaker frame becomes stable and good, the speaker can be reliably grounded to the housing
even if dimensional tolerance occurs in the speaker support wall of the housing It can be done.
Therefore, the ground connection of the speaker can be strengthened, and noise
countermeasures for the speaker can be effectively enhanced.
01-05-2019
16
[0060]
Moreover, since the speaker frame is elastically supported by the speaker support wall via the
cushioning material, even if dimensional tolerances occur in the speaker supporting wall, the
dimensional tolerance can be absorbed by the deformation of the cushioning material. Therefore,
there is no gap between the speaker frame and the speaker support wall that promotes the
vibration of the speaker, and the generation of abnormal noise from the case accompanying the
vibration of the speaker is prevented, and the sound is output. Sound quality can be improved.
[0061]
Brief description of the drawings
[0062]
1 is a perspective view of a portable computer according to a first embodiment of the present
invention.
[0063]
2 is a perspective view of the portable computer showing the keyboard removed from the
keyboard attachment portion.
[0064]
3 is a perspective view showing the positional relationship between the sound output unit of the
housing and the speaker and the keyboard attachment unit.
[0065]
4 is a perspective view showing a state in which the cushion material, the speaker and the
speaker holder are removed from the speaker support portion.
[0066]
5 is a plan view showing a state in which the speaker is fixed to the speaker support portion.
[0067]
01-05-2019
17
FIG. 6A is a cross-sectional view showing a state in which the speaker is fixed to the speaker
support portion.
(B) is a cross-sectional view of a housing covered with a conductive layer.
[0068]
7 is a cross-sectional view showing a state in which the cushion material, the speaker and the
speaker holder are removed from the speaker support portion.
[0069]
8 is a cross-sectional view showing a state in which the speaker holder is fixed to the speaker
support portion.
[0070]
9 is a cross-sectional view showing a state in which the speaker is fixed to the speaker support in
the second embodiment of the present invention.
[0071]
Explanation of sign
[0072]
DESCRIPTION OF SYMBOLS 4 ... Housing | casing 35a, 35b ... Speaker 36 ... Speaker frame 36a ...
Outer peripheral part (outer peripheral wall part) 40 ... Speaker support part 41 ... Speaker
support wall 51 ... Cushion material 55 ... Speaker holder 56a, 56b ... 1st and 2nd End portion
56c ... contact portion
01-05-2019
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