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JP2009105610

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DESCRIPTION JP2009105610
[PROBLEMS] To provide a waterproof structure and an electronic device with high waterproof
performance that can reduce the number of parts, simplify the structure, and reduce the
thickness. A waterproof structure between a first case 1 and a diaphragm 2 also serving as a
display panel provided opposite to the first case 1, the surface facing the first case 1 side of the
diaphragm 2 The first elastic member 3 is integrated, and the first elastic member 3 is press-fit
into the groove 12 formed in the surface of the first case 1 facing the diaphragm 2 side. [Selected
figure] Figure 3
Waterproof structure and electronic equipment
[0001]
The present invention relates to a waterproof structure between a first case and a diaphragm that
doubles as a display panel provided opposite to the first case, and to an electronic device
provided with the waterproof structure.
[0002]
In general, a panel speaker has a configuration that can emit a sound by vibrating a panel or a
housing by a drive source such as an actuator, so it seems that it is suitable for waterproofing
without the need for a sound output hole.
However, in fact, in order to vibrate a panel and a housing ¦ casing, it was not possible to fix
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these firmly and to take an airtight structure was difficult. Therefore, as shown in Patent
Document 1, for example, as a flat panel speaker mounting structure, the diaphragm is attached
to an actuator module at a predetermined site, and is attached to the front case through a framelike gasket member made of silicone rubber. It is attached and configured. The gasket members
are respectively adhered to the mounting surfaces of the diaphragm and the front case via a
frame-shaped double-sided adhesive sheet, thereby preventing the entry of moisture or the like
without disturbing the vibration of the diaphragm. Unexamined-Japanese-Patent No. 2006166029
[0003]
However, in Patent Document 1 described above, since the diaphragm, the gasket member, and
the front case are bonded by the double-sided pressure-sensitive adhesive sheet, there is a
problem that the thickness is large and the number of parts increases. Furthermore, the gasket
member needs to have the dual role of holding the diaphragm while expanding and contracting,
and in terms of holding the diaphragm, the gasket member also needs to be adhesive to the
double-sided tape, which is realistic It was difficult to meet all the requirements. Further, in the
structure of Patent Document 1, when considering full-scale waterproofing, it is also necessary to
consider a waterproof structure between the front case and the rear cover. The present invention
has been made in view of the above circumstances, and it is an object of the present invention to
reduce the number of parts, simplify the structure and reduce the thickness, and provide a
waterproof structure and an electronic device with high waterproof performance.
[0004]
In order to solve the above-mentioned subject, invention of Claim 1 is waterproof structure
between the 1st case and a diaphragm which serves as a display panel provided facing the 1st
case concerned, A first elastic member is integrated in a surface facing the first case side, and the
first elastic member is press-fit into a groove formed in a surface facing the diaphragm side of
the first case. It is characterized by
[0005]
The invention according to claim 2 is the waterproof structure according to claim 1, wherein the
second case has an opening in which the diaphragm is disposed, the second case covering the
first case, the first case, and the diaphragm And a middle case housed in a space formed between
the two, and the diaphragm is disposed in the opening of the second case, and the first elastic
member is formed by the second case. It is characterized in that it is fixed and disposed between
the diaphragm and the middle case.
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[0006]
The invention according to claim 3 is characterized in that, in the waterproof structure according
to claim 1, the diaphragm and the first case are fixed by a stepped screw via a second elastic
member.
[0007]
The invention according to claim 4 is a waterproof structure between a first case and a
diaphragm which doubles as a display panel provided opposite to the first case, the surface
facing the first case side of the diaphragm. The first elastic member is integrated through a film,
and the first elastic member is press-fitted into a groove formed in a surface of the first case
facing the diaphragm side. Do.
[0008]
The invention according to claim 5 is characterized in that, in the waterproof structure according
to claim 4, the film is a flexible wiring board.
[0009]
The invention according to claim 6 is the waterproof structure according to claim 4 or 5, further
comprising: a second case having an opening in which the diaphragm is disposed, the second
case covering the first case, the first case, and the first case And a middle case accommodated in
a space formed between the diaphragm and the diaphragm, wherein the diaphragm is disposed
in the opening of the second case, and the first elastic member is the second elastic member. It is
characterized by being fixed by a case and disposed between the diaphragm and the middle case.
[0010]
The invention according to claim 7 is characterized in that in the waterproof structure according
to claim 4 or 5, the diaphragm and the first case are fixed by a stepped screw via a second elastic
member. Do.
[0011]
The invention according to claim 8 is characterized in that the electronic device is provided with
the waterproof structure according to any one of claims 1 to 7.
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[0012]
According to the present invention, a panel speaker with high waterproof performance can be
realized, and the number of parts can be reduced, and the structure can be simplified and
thinned.
[0013]
Hereinafter, the best mode for carrying out the present invention will be described using the
drawings.
However, although various limitations preferable for carrying out the present invention are given
to the embodiments described below, the scope of the invention is not limited to the following
embodiments and the illustrated examples.
In the following description, the waterproof structure of the present invention is applied to a
foldable mobile phone (electronic device).
First Embodiment FIG. 1 is a perspective view of a display unit side housing 100, FIG. 2 is an
exploded perspective view of the display unit side housing 100, and FIG. 3 is along a cutting line
III-III in FIG. FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 1.
In the following description, the vertical direction will be described with reference to FIG.
A foldable mobile phone (not shown) has a display unit side case 100 having a display unit 7
including a liquid crystal display etc. and an operation unit side case (not shown) provided with
operation key groups by a hinge structure. It is connected rotatably.
The display unit side body 100 includes a first case 1 facing outward when closed, a diaphragm
2 provided facing the first case 1 and facing inward when closed, and a first case of the
diaphragm 2. And a first elastic member 3 integrated with the lower surface facing the case 1
side.
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In addition, the display unit side body 100 has an opening 42 in which the diaphragm 2 is
disposed, and the second case 4 that covers the first case 1 from above, the first case 1 and the
diaphragm 2 And a middle case 6 accommodated in the space 5 formed therebetween.
[0014]
The first case 1 has a recess 11 that is recessed downward, and the recess 11 and the diaphragm
2 form a space 5 in which the middle case 6, the display unit 7, the drive device 8 and the like
are accommodated.
A groove 12 into which the first elastic member 3 is press-fitted is formed in the upper end
surface of the first case 1 in a rectangular frame shape.
The upper end of the inner wall 121 forming the groove 12 is slightly lower than the outer wall
122, and the first elastic member 3 is disposed straddling the upper end of the inner wall 121
and the upper end of the middle case 6 .
[0015]
The diaphragm 2 also serves as a display panel, has a substantially rectangular plate shape, and
has a lower surface on which a drive device 8 for a panel speaker such as an actuator is fixed.
The drive device 8 is fixed only to the diaphragm 2 and is not fixed by being stuck to the middle
case 6 and is in a free state with the middle case 6 side. The reason why the drive device 8 is
fixed only to the diaphragm 2 in this way is that it is the principle that the drive device 8 is not a
reciprocating motion but produces an operation of bending the diaphragm 2 and generates
sound by its resonance operation. Since the drive device 8 itself can be freely varied and it is
necessary to transmit its vibration to the diaphragm 2, although not shown, the electrical
connection is also made by a flexible cable. Also, the first elastic member 3 is integrated from the
lower surface edge of the diaphragm 2 to the outer peripheral edge.
[0016]
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The first elastic member 3 is made of, for example, a rubber packing, and has a substantially
rectangular frame shape along the outer peripheral edge of the diaphragm 2. The first elastic
member 3 is provided with a pinching portion 31 sandwiched between the second case 4 and the
diaphragm 2 described later, and extends from the pinching portion 31 to the lower surface side
of the diaphragm 2 An extending portion 32 disposed across the upper end of the case 6 and the
inner wall portion 121 forming the groove portion 12 and a convex provided at a tip end portion
outside the extending portion 32 and press-fit into the groove portion 12 of the first case 1 And
33. The protrusion 33 is provided with a projection 34 for pressing the wall surface (the outer
wall 122) forming the groove 12 to prevent the first elastic member 3 from coming off the
groove 12. As shown in FIG. 4, the projections 34 are formed to be gradually inclined so as to be
tapered toward the tip of the convex portion 33 and have a substantially wedge shape in
sectional view. Such a first elastic member 3 is integrally formed with the diaphragm 2. Examples
of the method of integration include heat welding by insert molding and two-color molding using
a material having self-adhesion, but the method is not particularly limited as long as there is no
gap and there is peel strength.
[0017]
The second case 4 has a recess 41 which is recessed upward, and an opening 42 in which the
diaphragm 2 and the pinching portion 33 of the first elastic member 3 are fitted is formed in the
recess 41. The nipping portion 33 is nipped by the inner wall surface forming the opening 42 of
the second case 4 and the outer peripheral edge of the diaphragm 2. Further, in the concave
portion 41 of the second case 4, an engaging portion 45 for engaging with the outer wall portion
122 forming the groove portion 12 is formed.
[0018]
The middle case 6 is accommodated in the recess 41 of the first case 4 (in the space 5 formed by
the first case 1 and the diaphragm 2). The middle case 6 has a recess 61 which is recessed
downward similarly to the first case 1, and in the recess 61 of the middle case 6, a display unit
such as a liquid crystal display, a drive circuit for driving the display unit, a power supply, etc.
And a drive device 8 fixed to the lower surface of the diaphragm 2.
[0019]
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Further, as shown in FIG. 1 and FIG. 2, screw holes 43, 43,... Penetrating through the outer side
surface are formed at four corners of the outer side surface of the second case 4. Screw holes 13,
13,... Into which the screws 10 are screwed are also formed on the outer side surface of the first
case 1 corresponding to the screw holes 43, 43,. The first case 1 and the second case 4 are fixed
by screwing the screws 10, 10, ... into the screw holes 43, 43, ..., 13, 13, .... In the display unit
side body 100 configured as described above, when the drive device 8 is driven, the diaphragm 2
vibrates and functions as a speaker.
[0020]
Next, how to assemble the above-described display unit side body 100 will be described. In
advance, the first elastic member 3 is integrated along the lower surface edge and the outer
peripheral edge of the diaphragm 2 by known insert molding or the like. Next, the drive device 8
is fixed to the lower surface of the diaphragm 2 with a double-sided tape (not shown). On the
other hand, the middle case 6 and the display unit 7 are accommodated in the recess 11 of the
first case 1. Further, the convex portion 33 of the first elastic member 3 is press-fit into the
groove portion 12 of the first case 1, and the diaphragm 2 covers the upper side of the middle
case 6. Then, by engaging the engaging portion 45 of the second case 4 with the outer wall
portion 122 of the first case 1, the second case 4 is fitted to the first case 1 and the inside of the
opening 42 of the second case 4 The diaphragm 2 and the first elastic member 3 are disposed in
the first case 1 so as to cover the first case 1 with the second case 4. Finally, screwing the screws
10, 10, ... into the screw holes 13, 13, ... of the first case 1 from the screw holes 43, 43, ... formed
in the second case 4 makes the first case 1 and the second case Fix 2 and.
[0021]
As described above, the first elastic member 3 is integrated with the lower surface of the
diaphragm 2 facing the first case 1, and the upper surface of the first elastic member 3 faces the
diaphragm 2 of the first case 1. Since the first elastic member 3 is pressed into the groove 12,
the space between the diaphragm 2 and the first case 1 can be waterproofed. Therefore, while
being able to aim at waterproofing which does not depend on compression with the 1st case 1
and the 2nd case 4, a panel speaker is realizable. Further, since the diaphragm 2 and the first
elastic member 3 are integrated, the number of parts can be reduced, the structure can be
simplified, and the thickness can be further reduced. A second case 4 having an opening 42 and
covering the first case 1; and a middle case 6 accommodated in a space 5 formed between the
first case 1 and the diaphragm 2; Since the elastic member 3 is fixed by the second case 4 and
disposed between the diaphragm 2 and the middle case 6, the first elastic member 3 and the
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middle case 6 Anomalous loading and mobility can be ensured.
[0022]
Second Embodiment FIG. 5 is an exploded perspective view of the display unit side housing
100A, and FIG. 6 is a view taken along a cutting line VI-VI in a state where the display unit side
housing 100A in FIG. FIG. In the following description, the vertical direction will be described
with reference to FIG. In the second embodiment, unlike the first embodiment, the second case is
not provided, and the diaphragm 2A and the first case 1A are directly fixed. Specifically, the
display unit side housing 100A is a first case 1A, a diaphragm 2A provided opposite to the first
case 1A and serving as a display panel, and a lower surface of the diaphragm 2A facing the first
case 1A side. And a first elastic member 3A integrated with the
[0023]
Similar to the first case 1 of the first embodiment, the first case 1A has a recess 11A that is
recessed downward, and the display unit 7A and the drive device (not shown) are accommodated
by the recess 11A and the diaphragm 2A. Space 5A is formed. In the upper end surface of the
first case 1A, a groove 12A into which the first elastic member 3A is press-fitted is formed in a
rectangular frame shape. The upper end of the inner wall 121A forming the groove 12A is
slightly lower than the outer wall 122A, and the first elastic member 3A is placed on the upper
end of the inner wall 121A.
[0024]
The diaphragm 2A is a substantially rectangular plate having substantially the same size as the
upper surface of the first case 1A, and the drive device is fixed to the lower surface. The drive
device is fixed in the same manner as the drive device 8 of the first embodiment. Further, a
substantially rectangular frame-shaped first elastic member 3A is integrated with the lower
surface edge of the diaphragm 2A.
[0025]
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The first elastic member 3A is made of, for example, a rubber packing or the like, has a
rectangular frame shape, and does not extend to the outer peripheral edge side of the diaphragm
2A. Then, the first elastic member 3A has a substantially L-shaped cross sectional view, and is
fitted into the mounting portion 31A mounted on the upper end of the inner wall 121A forming
the groove 12A and the groove 12A of the first case 1A. And a convex portion 33A. In the convex
portion 33A, a protrusion 34A having a substantially wedge shape in cross section for pressing
the wall surface (the outer wall portion 122A) forming the groove portion 12A is formed, thereby
preventing the first elastic member 3A from coming off from the groove portion 12A. . Such a
first elastic member 3A is integrally formed on the lower surface of the diaphragm 2A by the
method described above.
[0026]
In the recess 11A of the first case 1A (in the space 5A formed by the first case 1A and the
diaphragm 2A), a drive fixed to the lower surface of the display unit 7A (shown only in FIG. 6) or
the diaphragm 2A Device is housed.
[0027]
Further, screw holes 21A, 21A,... Which penetrate the upper surface are formed at four corners
of the upper surface of the diaphragm 2A.
Also, screw holes 13A, 13A,... Into which the stepped screws 10A, 10A,... Are screwed are formed
in the upper end face of the first case 1A corresponding to the screw holes 21A, 21A,. The screw
holes 13A, 13A,... Are disposed outside the groove 12A. Then, the stepped screws 10A, 10A, ...
are screwed into the screw holes 21A, 21A, ..., 13A, 13A, ... via the second elastic members 9A,
9A, ... The diaphragm 2A and the first case 1A is fixed. In the stepped screw 10A, as shown in
FIG. 6, a stepped portion 101A is formed at the boundary between the first case 1A and the
diaphragm 2A, and the portion screwed into the screw hole 13A of the first case 1A is vibrated.
The diameter is smaller than the portion screwed into the screw hole 21A of the plate 2A. The
second elastic member 9A is, for example, rubber having a cushioning property, and by being
held between the head 102A of the stepped screw 10A and the diaphragm 2A, the stepped screw
10A is allowed while allowing vibration. To prevent the removal of Further, a fixed gap S is
formed at the boundary between the diaphragm 2A and the first case 1A by the step portion
101A of the stepped screw 10A, thereby preventing the vibration of the diaphragm 2A from
being hindered. In the display unit side housing 100A configured as described above, when the
drive device is driven, the diaphragm 2A vibrates and functions as a speaker.
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[0028]
Next, how to assemble the above-described display unit side housing 100A will be described.
First, the first elastic member 3A is integrated at a predetermined position on the lower surface
of the diaphragm 2A by known insert molding or the like. Next, the drive device is fixed to the
lower surface of the diaphragm 2A with a double-sided tape. On the other hand, the display unit
7A is accommodated in the recess 11A of the first case 1A. Further, the convex portion 33A of
the first elastic member 3A is press-fitted into the groove 12A of the first case 1A, and the
diaphragm 2A covers the upper side of the first case 1A. And, through the second elastic
members 9A, 9A, ..., the stepped screws 10A, 10A, ... from the screw holes 21A, 21A, ... of the
diaphragm 2A to the screw holes 13A, 13A, ... of the first case 1A The diaphragm 2A and the first
case 1A are fixed by screwing in the attachment screws 10A, 10A,.
[0029]
As described above, the first elastic member 3A is integrated with the lower surface of the
diaphragm 2A facing the first case 1A, and the upper surface of the first elastic member 3A faces
the diaphragm 2A of the first case 1A. Because the first elastic member 3A is press-fit into the
groove 12A, the space between the diaphragm 2A and the first case 1A can be waterproofed.
Therefore, while being able to aim at waterproofing which does not depend on compression of
1st case 1A and diaphragm 2A, a panel speaker is realizable. Further, since the diaphragm 2A
and the first elastic member 3A are integrated, the number of parts can be reduced, the structure
can be simplified, and the thickness can be further reduced. Further, since the diaphragm 2A and
the first case 1A are fixed by the stepped screw 10A via the second elastic member 9A, a new
design can be realized, and the first embodiment As a second case is not required, the number of
parts can be reduced, the structure can be simplified, and the thickness can be further reduced.
[0030]
Third Embodiment FIG. 7 is a perspective view of a display unit side housing 100B, FIG. 8 is an
exploded perspective view of the display unit side housing 100B, and FIG. 9 is along a cutting
line IX-IX of FIG. FIG. 10 is an arrow sectional view at the time of cutting along a cutting line XX
of FIG. 7. In the following description, the vertical direction will be described with reference to
FIG. In the third embodiment, unlike the first embodiment, the first elastic member 3B is fixed to
the lower surface of the diaphragm 2B via the flexible wiring board 14B which is a film, and the
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flexible wiring board 11B and the first The elastic member 3B is integrated. Specifically, the
display unit side body 100B includes the first case 1B, the diaphragm 2B provided opposite to
the first case 1B and serving as a display panel, and the lower surface of the diaphragm 2B facing
the first case 1B side. And a first elastic member 3B fixed to the In addition, the display unit side
body 100B has an opening 42B in which the diaphragm 2B is disposed, and covers the first case
1B from above, the second case 4B, the first case 1B, and the diaphragm 2B. And a middle case
6B accommodated in a space 5B formed therebetween.
[0031]
Similar to the first case 1 of the first embodiment, the first case 1B has a recess 11B, and a
groove 12B is formed in a rectangular frame shape on the upper end surface of the first case 1B.
Further, the upper end of the inner wall 121B forming the groove 12B is slightly lower than the
outer wall 122B, and the first elastic member 3B is disposed straddling the upper end of the
inner wall 121B and the upper end of the middle case 6B. ing.
[0032]
Like the diaphragm 2 of the first embodiment, the diaphragm 2B has a substantially rectangular
plate shape, and the drive device 8B is fixed to the lower surface. Further, a substantially
rectangular frame-shaped first elastic member 3B is fixed to the lower surface edge of the
diaphragm 2B by a double-sided tape 15B via the flexible wiring board 14B.
[0033]
The first elastic member 3B is made of, for example, a rubber packing, and has a rectangular
frame shape. Then, the first elastic member 3B contacts the contact portion 35B that contacts the
recess 41B of the second case 4B, extends from the contact portion 35B to the lower surface side
of the diaphragm 2B, and the upper end of the middle case 6B and the groove 12B. It includes an
extending portion 32B disposed across the upper end of the inner wall portion 121B to be
formed, and a convex portion 33B provided at an outer end of the extending portion 32B and
press-fitted into the groove 12B of the first case 1 . The protrusion 33 is formed with a projection
34B that presses a wall surface (the outer wall 122B) forming the groove 12B, thereby
preventing the first elastic member 3B from coming off the groove 12B. Such a first elastic
member 3B is integrated with the flexible wiring board 14B. Examples of the method of
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integration include heat welding by insert molding and two-color molding using a material
having self-adhesion, but the method is not particularly limited as long as there is no gap and
there is peel strength. As shown in FIGS. 8 and 9, the flexible wiring board 14B is formed in a
frame shape along the upper surface of the first elastic member 3B, and a portion of the flexible
wiring board 14B is a contact portion 35B of the first elastic member 3B. It penetrates and it
extends outside the inside of the frame of the first contact portion 3B to the outside of the frame.
The extended portion is further pulled out to the outside of the first case 1B and the second case
4B.
[0034]
The second case 4B has a recess 41B that is recessed upward, and an opening 42B in which the
diaphragm 2B is fitted is formed in the recess 41B. Further, in the recess 41B of the second case
4B, an engaging portion 45B for engaging with the outer wall 122B forming the groove 12B of
the first case 3B is formed. Furthermore, a part of the second case 4B is formed with a drawn
hole 44B which is cut out for drawing the flexible wiring board 14B to the outside.
[0035]
In the recess 11B of the first case 1B (in the space 5B formed by the first case 1B and the
diaphragm 2B), the substrate 16B having a drive circuit such as a liquid crystal display of the
display unit 7B or the drive device 8B downward The middle case 6B having the recessed recess
61B is accommodated in order from the bottom, and the drive device 8B fixed to the lower
surface of the display unit 7B and the diaphragm 2B is further accommodated in the recess 61B
of the middle case 6B. In the middle case 6B, an opening 62B is formed to expose the substrate
16B disposed on the lower surface of the middle case 6B, and the flexible wiring board 14B is
connected to the substrate 16B exposed from the opening 62B. (See Figure 9).
[0036]
Further, screw holes 43B, 43B,... Penetrating through the outer side surface are formed at four
corners of the outer side surface of the second case 4B. Further, screw holes 13B, 13B,... Into
which the screws 10B, 10B,... Are screwed are also formed on the outer side surface of the first
case 1B corresponding to the screw holes 43B, 43B,. The first case 1B and the second case 4B
are fixed by screwing the screws 10B, 10B, ... into the screw holes 43B, 43B, ..., 13B, 13B, .... In
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the display unit side housing 100B configured as described above, when the drive device 8B is
driven, the diaphragm 2B vibrates and functions as a speaker.
[0037]
Next, how to assemble the above-described display unit side body 100B will be described. The
first elastic member 3B and the flexible wiring board 14B are integrated in advance by known
insert molding or the like. Next, the first elastic member 3B integrated with the flexible wiring
board 14B is fixed to the lower surface of the diaphragm 2B with the double-sided tape 15B.
Further, the drive device 8B is fixed to the lower surface of the diaphragm 2B with a double-sided
tape. On the other hand, the substrate 16B, the middle case 6B and the display unit 7B are
accommodated in the recess 11B of the first case 1B. Further, the convex portion 33B of the first
elastic member 3B is press-fit into the groove 12B of the first case 1B. Then, the second case 4B
is brought into contact with the contact portion 35B of the first elastic member 3B, and the
engagement portion 45B is engaged with the outer wall portion 122B, and the diaphragm 2B is
accommodated in the opening 42B of the second case 4B. To cover the first case 1B with the
second case 4B. At this time, a part of the flexible wiring board 14B is drawn out from the
drawing hole 44B. Finally, screwing the screws 10B, 10B, ... into the screw holes 13B, 13B, ... of
the first case 1B from the screw holes 43B, 43B, ... formed on the outer side surface of the second
case 4B and the first case 1B and Fix the second case 4B.
[0038]
As described above, the first elastic member 3B is integrated with the lower surface of the
diaphragm 2B facing the first case 1B side via the flexible wiring board 14B which is a film, and
the first elastic member 3B is the first case The first elastic member 3B is press-fitted into the
groove 12B to waterproof the space between the diaphragm 2B and the first case 1B because the
groove 12B is press-fitted into the groove 12B formed on the upper surface facing the diaphragm
2B side of 1B. be able to. Therefore, while being able to aim at waterproofing which does not
depend on compression of 1st case 1B and 2nd case 4B, a panel speaker is realizable. Further,
since the diaphragm 2B and the first elastic member 3B are integrated, the number of parts can
be reduced, the structure can be simplified, and the thickness can be further reduced. Further,
since the first elastic member 3B is integrated with the lower surface of the diaphragm 2B via the
flexible wiring board 14B, it is easy to print the back surface of the diaphragm 2B, and also
prevent damage on the back surface printing process. Can. In particular, since the flexible wiring
board 14B is used as the film, not only the wiring can be pulled out to the outside of the first case
1B, but also the waterproof structure independent of the wiring portion can be reduced. The
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second case 4B having the opening 42B and covering the first case 1B, and the middle case 6B
housed in the space 5B formed between the first case 4B and the diaphragm 2B, Since the first
elastic member 3B is fixed by the second case 4B and disposed between the diaphragm 2B and
the middle case 6B, the surface of the diaphragm 2B is formed by the first elastic member 3B and
the middle case 6B. Anomalous weighting and mobility can be secured.
[0039]
[Fourth Embodiment] FIG. 11 is an exploded perspective view of a display unit side housing
100C, and FIG. 12 is a view taken along a cutting line XII-XII in a state where the display unit
side housing 100C in FIG. FIG. In the following description, the vertical direction will be
described with reference to FIG. In the fourth embodiment, in the third embodiment, the flexible
wiring board 14B is a simple film 17C, and the film 17C and the first elastic member 3C are
integrated, and the other configuration is the third. The same components as in the embodiment
are indicated by the letter C attached to the same numerals, and the description thereof is
omitted. The film 17C is located on the upper surface of the extension 32C of the first elastic
member 3C and inside the contact portion 35C, and the film 17C and the first elastic member 3C
are integrated by a known method It is done. Furthermore, the upper surface of the film 17C and
the lower surface of the diaphragm 2C are fixed via the double-sided tape 15C. The method of
assembling the display unit side housing 100C is basically the same as that of the third
embodiment, and thus the description thereof is omitted.
[0040]
[Fifth Embodiment] FIG. 13 is an exploded perspective view of a display unit side housing 100D,
and FIG. 14 is a cut along a cutting line XIV-XIV in a state where the display unit side housing
100D in FIG. 13 is assembled. FIG. 15 is a sectional view taken along the line XV-XV in FIG. In the
following description, the vertical direction will be described with reference to FIG. In the fifth
embodiment, as in the third embodiment, the first elastic member 3D is fixed to the lower surface
of the diaphragm 2D via the flexible wiring board 14D, which is a film, One elastic member 3D is
integrated. Further, similarly to the second embodiment, the second case is not provided, and the
diaphragm 2D and the first case 1D are directly fixed. Specifically, the display unit-side housing
100D is a first case 1D, a diaphragm 2D provided opposite to the first case 1D and serving as a
display panel, and a lower surface of the diaphragm 2D facing the first case 1D side. And a first
elastic member 3D fixed via a flexible wiring board 14D, which is a film.
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[0041]
The first case 1D is the same as the first case 1A of the second embodiment, has a recess 11D,
and a groove 12D is formed in a rectangular frame shape on the upper end surface of the first
case 1D. The upper end of the inner wall 121D forming the groove 12D is slightly lower than the
outer wall 122D, and the first elastic member 3D is placed on the upper end of the inner wall
121D.
[0042]
The diaphragm 2D is also the same as the diaphragm 2A of the second embodiment, and has a
substantially rectangular plate shape having substantially the same size as the upper surface of
the first case 1D, and a drive device (not shown) on the lower surface. Is fixed. In addition, a
substantially rectangular frame-shaped first elastic member 3D is fixed to the lower surface edge
of the diaphragm 2D by a double-sided tape 15D via the flexible wiring board 14D.
[0043]
The first elastic member 3D is the same as the first elastic member 3A of the second
embodiment, and includes a mounting portion 31D and a convex portion 33D, and a projection
34D is formed on the convex portion 33D. It is done. The flexible wiring board 14D is integrated
with the upper surface of such a first elastic member 3D by the insert molding or the like. As
shown in FIGS. 13 to 15, the flexible wiring board 14D is formed in a frame shape along the
upper surface of the first elastic member 3D, and a portion of the flexible wiring board 14D
extends from the inside of the frame of the first elastic member 3D to the outside of the frame.
The extended portion extends further to the outside of the first case 1D.
[0044]
In the recess 11D of the first case 1D (in the space 5D formed by the first case 1D and the
diaphragm 2D), a drive unit fixed to the lower surface of the display unit (not shown) or the
diaphragm 2D is accommodated ing. In addition, a substrate (not shown) having a drive circuit
such as a liquid crystal display or a drive device of a display unit is accommodated as in the third
embodiment.
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[0045]
Further, four screw holes 21D, 21D, ... are formed on the upper surface of the diaphragm 2D as
in the second embodiment, and four screw holes 13D, 13D, ... are also formed on the upper end
face of the first case 1D. It is formed. Then, the stepped screws 10D, 10D, ... are screwed into the
screw holes 21D, 21D, ..., 13D, 13D, ... via the second elastic members 9D, 9D, ... The diaphragm
2D and the first case 1D Is fixed. The stepped screw 10D and the second elastic member 9D are
the same as the stepped screw 10A and the second elastic member 9A of the second
embodiment. In the display unit side housing 100D configured as described above, when the
drive device is driven, the diaphragm 2D vibrates and functions as a speaker.
[0046]
Next, how to assemble the display unit side housing 100D described above will be described. The
first elastic member 3D and the flexible wiring board 14D are integrated in advance by known
insert molding or the like. Next, the first elastic member 3D integrated with the flexible wiring
board 14D is fixed to the lower surface of the diaphragm 2D with the double-sided tape 15D.
Further, the drive device is fixed to the lower surface of the diaphragm 2D with a double-sided
tape. On the other hand, the substrate and the display unit are accommodated in the recess 11D
of the first case 1D. Further, the convex portion 33D of the first elastic member 3D is press-fit
into the groove 12D of the first case 1D, and the diaphragm 2D covers the upper side of the first
case 1D and the middle case. And, through the second elastic members 9D, 9D, ... from the screw
holes 21D, 21D, ... of the diaphragm 2D to the screw holes 13D, 13D, ... of the first case 1D
through the stepped screws 10D, 10D, ... The diaphragm 2D and the first case 1D are fixed by
screwing in the attachment screws 10D, 10D,.
[0047]
As described above, the first elastic member 3D is integrated with the lower surface of the
diaphragm 2D facing the first case 1D via the flexible wiring board 14D, which is a film, and the
first elastic member 3D is the first case. The first elastic member 3D is press-fitted into the
groove 12D, thereby waterproofing between the diaphragm 2D and the first case 1D, since the
groove 12D is formed by pressing the first elastic member 3D into the groove 12D. be able to.
Therefore, while being able to aim at waterproofing which does not depend on compression of
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1st case 1D and diaphragm 2D, a panel speaker is realizable. Further, since the diaphragm 2D
and the first elastic member 3D are integrated, the number of parts can be reduced, the structure
can be simplified, and the thickness can be further reduced. In addition, since the first elastic
member 3D is integrated with the lower surface of the diaphragm 2D via the flexible wiring
board 14D, it is easy to print the back surface of the diaphragm 2D, and also prevent damage on
the back surface printing process. Can. In particular, since the flexible wiring board 14D is used
as the film, not only the wiring can be pulled out to the outside of the first case 1D, but also the
waterproof structure independent of the wiring portion can be reduced. Further, since the
diaphragm 2D and the first case 1D are fixed by the stepped screw 10D via the second elastic
member 9D, a new design can be realized, and the third embodiment As a second case is not
required as in the above, the number of parts can be reduced, the structure can be simplified, and
the thickness can be further reduced.
[0048]
It is a perspective view of display part side case 100 in a first embodiment of the present
invention. It is a disassembled perspective view of display part side case 100 in a first
embodiment of the present invention. It is arrow sectional drawing at the time of cut ¦
disconnecting along cutting-plane line III-III of FIG. It is arrow sectional drawing at the time of
cut ¦ disconnecting along cutting-plane line IV-IV of FIG. It is a disassembled perspective view of
display part side case 100A in a second embodiment of the present invention. It is arrow
sectional drawing at the time of cut ¦ disconnecting along the cutting plane line VI-VI in the state
which assembled ¦ attached the display part side housing 100A in FIG. It is a perspective view of
display part side case 100B in a third embodiment of the present invention. It is a disassembled
perspective view of display part side case 100B in a third embodiment of the present invention. It
is arrow sectional drawing at the time of cut ¦ disconnecting along the cutting plane line IX-IX of
FIG. It is arrow sectional drawing at the time of cut ¦ disconnecting along cutting-plane-line XX of
FIG. It is a disassembled perspective view of display part side case 100C in a fourth embodiment
of the present invention. It is arrow sectional drawing at the time of cut ¦ disconnecting along the
cutting plane line XII-XII in the state which assembled ¦ attached the display part side housing
100C in FIG. It is a disassembled perspective view of display part side housing 100D in a fifth
embodiment of the present invention. It is arrow sectional drawing at the time of cut ¦
disconnecting along the cutting plane line XIV-XIV in the state which assembled display part side
housing ¦ casing 100D in FIG. It is arrow sectional drawing at the time of cut ¦ disconnecting
along the cutting plane line XV-XV of FIG.
Explanation of sign
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[0049]
1, 1A, 1B, 1C, 1D first case 2, 2A, 2B, 2C, 2D diaphragm 3, 3A, 3B, 3C, 3D first elastic member 4,
4B, 4C second case 5, 5A, 5B , 5C, 5D space 6, 6B, 6C, middle case 9A, 9D second elastic member
10A, 10D stepped screw 12, 12A, 12B, 12C, 12D groove portion 14B, 14D flexible wiring board
17C film 42, 42B, 42C Openings 100, 100A, 100B, 100C, 100D Display unit side case
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