JP2002263573

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DESCRIPTION JP2002263573
[0001]
The present invention relates to an improvement of an electromagnetic induction type actuator
device having functions such as vibration generation, voice generation, and buzzer sound
generation, and a mobile phone equipped with the same electromagnetic induction type actuator
device. The present invention relates to the improvement of portable information devices.
[0002]
2. Description of the Related Art Generally, portable information devices such as mobile phones,
pagers and electronic notebooks are constructed by equipping an electromagnetic induction type
actuator device as vibration generation, sound generation and buzzer sound generation
equipment.
[0003]
As an electromagnetic induction type actuator device of this type, as shown in FIGS. 16 and 17, a
cylindrical housing 1 is used as a base frame, and a diaphragm 3 having a voice coil 2 mounted
on the inner surface side is provided. While drawing out the wires 2a and 2b to the outside of the
housing 1, the diaphragm 3 is fitted and fixed to the open end 1a of the housing 1, and further,
the lead wires 2a and 2b of the voice coil 2 are projected outward from the side wall of the
housing 1 By soldering and fixing the terminal metal fittings 4a and 4b of the terminal block 1b
and the mounting side of the diaphragm 3, a conductive circuit unit is formed in which the
terminal metal fittings 4a and 4b are used as power supply terminals.
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[0004]
With respect to the energizing circuit portion, as shown in FIG. 18, a magnet 6 integral with the
pole piece 5 and a yoke 7 for holding the magnet 6 integrally with the pole piece 5 with the
magnetic gap G separated between the pole piece 5 The yoke 7 is supported by thin plate springs
8a and 8b and assembled in the housing 1, and the voice coil 2 is inserted into the magnetic gap
G between the pole piece 5 and the yoke 7 to form a magnetic circuit portion. Furthermore, a cap
9 provided with a plurality of sound output holes 9a, 9b... Is attached to the open end 1c of the
housing 1 to constitute an electromagnetic induction type actuator device.
[0005]
Conventionally, in the electromagnetic induction type actuator device, the attachment side of the
diaphragm 3 is directed to the housing panel of the device body, the attachment side of the cap 9
is directed to the plate surface of the circuit board, and the terminal fittings 4a and 4b are the
feed lands of the circuit board It is assembled and installed in equipment such as a mobile phone
by electrically connecting circuits.
[0006]
In the electromagnetic induction type actuator device, in order to obtain acceleration by vibrating
the mass-heavy magnetic circuit unit, the leakage magnetic flux emitted from the magnetic
circuit unit is modulated to the vibration frequency to become an AC magnetic field. There is a
concern about the influence on the magnetic recording cards etc. from the point where it comes
out from the side.
[0007]
In order to prevent the influence of the AC magnetic field, attach the mounting side of the cap 9
with little leakage flux on the opposite side of the mounting side of the diaphragm 3 to the
housing panel of the main body of the device and assemble it into equipment such as a mobile
phone. Is considered.
[0008]
However, the side where the lead wires 2a and 2b of the voice coil 2 are soldered to the terminal
fittings 4a and 4b is positioned relative to the feeding land of the circuit board simply by simply
assembling the above-described electromagnetic induction type actuator device in the reverse
direction. The solder buildup makes it difficult to electrically connect the terminal fittings 4a and
4b with the feed lands of the circuit board.
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[0009]
SUMMARY OF THE INVENTION According to the present invention, the mounting side of the
diaphragm is directed to the plate surface side of the circuit board, and the opposite side is
directed to the housing panel side of the device body, thereby assembling the equipment into the
device. An object of the present invention is to provide an electromagnetic induction type
actuator device in which a terminal fitting is electrically connected in a circuit with a feed land of
a circuit board to be easily assembled in equipment with the main object of suppressing the
influence of an AC magnetic field.
[0010]
In addition to this, the present invention is an electromagnetic induction type actuator which has
the terminal fitting firmly attached to the terminal block of the housing and is electrically
connectable securely with the feed land of the circuit board and is compactly assembled as a
whole. It aims at providing an apparatus.
[0011]
Another object of the present invention is to provide a portable information device including a
mobile phone and the like which can suppress the influence of an AC magnetic field even if the
electromagnetic induction type actuator device is equipped as a vibration generation, voice
generation and buzzer sound generation device. Do.
[0012]
In the electromagnetic induction type actuator device according to claim 1 of the present
invention, a contact portion to be in electrical contact with the feed land of the circuit board is
provided on the attachment side of the diaphragm, and a voice coil The terminal fitting is
provided with a flat plate part electrically connected to the lead wire on the opposite side to the
attachment side of the diaphragm, and the lead wire of the voice coil drawn from the diaphragm
to the outside of the housing is stretched in the opposite direction from the attachment side of
the diaphragm Separate the lead wire of the voice coil on the flat plate of the terminal fitting and
positive and negative poles on the opposite side of the diaphragm mounting side and electrically
connect the diaphragm mounting side to the board surface of the circuit board. It is comprised by
the reverse direction type as what is equipped inside a housing ¦ casing.
[0013]
In the electromagnetic induction type actuator device according to claim 2 of the present
invention, the terminal block is provided with a slit for dividing into positive and negative poles
at the center, and the lead wire of the voice coil drawn out of the housing is the slit of the
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terminal block By stretching the lead of the voice coil on the opposite side of the diaphragm
mounting side to positive and negative poles and electrically connecting it to the flat plate
portion of the terminal fitting. It is done.
[0014]
In the electromagnetic induction type actuator device according to claim 3 of the present
invention, the recessed portion having a projected dimension larger than the recessed portion,
the top plate portion and the bottom plate portion of the recessed portion, and the top plate
portion and the bottom plate portion. A terminal block for positive and negative terminals is
provided on the side wall of the housing from both side plate portions, and a U-shaped fitting
plate portion is disposed at the center, and a predetermined gap from one side edge of the fitting
plate portion A flat portion for connecting lead wires which bend in parallel with each other, and
a contact portion for feeding land connection which curves like a chord from the flat spring
portion which is inclined downward from the other side end of the fitting plate portion. The
formed terminal metal fitting is provided, and the fitting plate portion is fitted to the recessed
portion of the terminal block by sandwiching the top plate portion of the terminal block from the
flat plate portion for lead wire connection and one end side of the fitting plate portion, and
feeding Contact points for land connection are projected from the bottom plate of the terminal
block It is constructed by attaching a terminal fitting to the terminal block at the fitting structure
for supporting.
[0015]
In the electromagnetic induction type actuator device according to a fourth aspect of the present
invention, the terminal metal fittings are provided with spring arms having projecting teeth
protruding from the outer edge and extending from one end of the fitting plate to both sides, and
the plate thickness of each spring arm Provide a bridge on the inner surface of both side plates
with a gap equivalent to the top plate of the terminal block and fit the spring arm between the
top plate of the terminal block and the bridge on the side plates. It is comprised by attaching a
terminal metal fitting to a terminal block by the fitting structure which carries out elastic locking
of the projecting tooth to the inner surface of a both-sides board part.
[0016]
In the electromagnetic induction type actuator device according to claim 5 of the present
invention, the terminal metal fitting is provided with the slat plate portion which is bent inward
from the tip of the contact portion curving in the upper chord shape from the spring plate
portion and extends in the side plate direction of the terminal block. The terminal fitting is
attached to the terminal block with a fitting structure in which a bearing is provided on the inner
surface of both side plate portions so as to receive and support the blade plate portion along with
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the resilient displacement of the plate spring portion. Is configured by.
[0017]
In the electromagnetic induction type actuator device according to claim 6 of the present
invention, the projection is configured by providing a terminal fitting provided at the center of
the plate surface along a circular arc direction of the contact portion with a protrusion contacting
the feed land of the circuit board There is.
[0018]
In a portable information device including a mobile phone etc. according to claim 7 of the
present invention, the electromagnetic induction type actuator device according to any one of
claims 1 to 6 is equipped as vibration generation, voice generation, and buzzer sound generation
device. Is configured by.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION In the following, with reference to FIGS. 1 to
15, the electromagnetic induction type actuator device according to the illustrated embodiment
basically has a form common to that according to the general example. It is configured.
The common basic form will be described using the same reference numerals as the constituent
parts of those shown in FIGS. 16 to 18.
Also, for convenience of explanation, in order to specify the installation direction of the
electromagnetic induction type actuator device, the side facing the housing panel of the device
body is the upper side, and the side facing the surface of the circuit board is the lower side. Do.
[0020]
The basic form thereof is, as shown in FIG. 1, a cylindrical housing 1 as a base frame, the magnet
6 integral with the pole piece 5 and the magnetic gap G between the pole piece 5 and the magnet
6 as the pole piece 5 And a disc-shaped yoke 7 integrally held with the magnetic circuit portion,
and the magnetic circuit portion is supported by a double suspense structure by thin plate
springs 8a and 8b and assembled inside the housing 1 There is.
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[0021]
The voice coil 2 is provided with a diaphragm 3 mounted on the inner surface side, and the voice
coil 2 is inserted into the magnetic gap G between the pole piece 5 and the yoke 6 so that the
diaphragm 3 is in the frame at the open end 1 a of the housing 1 The lead wire 2a (2b) of the
voice coil 2 is stretched and electrically connected to the terminal fitting 4a (4b) of the terminal
block 1b projecting outward from the side wall of the housing 1, and a plurality of sound output
holes A cap 9 provided with 9a, 9b... Is attached to the open end 1c of the housing 1 to form a
cover.
[0022]
Below the basic form, as the terminal fitting 4a (4b) (hereinafter, the same component of each
fitting is indicated by a single reference numeral.
) Is provided on the attachment side of the diaphragm 3 with a contact portion 40 to be in
electrical contact with a feed land (not shown) of the circuit board, and a flat portion 41
electrically connected to the lead wire 2a of the voice coil 2 is cap 9 Provided on the mounting
side of the
[0023]
With the terminal fittings 4a and 4b, the lead wires 2a and 2b of the voice coil 2 drawn from the
diaphragm 3 to the outside of the housing 1 are stretched in the opposite direction from the
attachment side of the diaphragm 3 as shown in FIGS. The lead wires 2a and 2b of the voice coil
2 are electrically connected to the flat plate portions 41 of the terminal fittings 4a and 4b on the
mounting side of the cap 9 by dividing them into positive and negative poles.
[0024]
The electromagnetic induction type actuator device thus configured makes the mounting side of
the cap 9 opposite to the inner case portion c1 of the housing C as shown in FIG. It is configured
as a reverse type in which the inside of the casing C is equipped with the mounting side of 3
facing the plate surface of the circuit board P attached to the outer case portion c2 with the inner
case portion c1.
[0025]
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In the electromagnetic induction type actuator device, the mounting side of the cap 9 with small
leakage flux is directed to the inner case portion c1 of the housing C, and the mounting side of
the diaphragm 3 with large leakage flux is directed to the plate surface of the circuit board P
Since the AC magnetic field is prevented from leaking out of the inner case portion c1 of the
housing C, the influence of the AC magnetic field on the magnetic recording cards can be
prevented.
[0026]
At the same time, the lead wire 2a (2b) of the voice coil 2 is divided into the flat plate portion 41
of the terminal fitting 4a (4b) and the + and-poles on the mounting side of the cap 9 facing the
inner case portion c1 of the housing C. Since the soldering is fixed, the solder bumps do not
interfere in electrically connecting the terminal fitting 4a (4b) with the feed land r1 (r2) of the
circuit board P at the contact portion 41.
[0027]
In the configuration, the terminal block 1b is provided on the side wall of the housing 1 by
providing the slit 10 at the center as shown in FIGS. 2 to 4 and dividing it into two positive and
negative electrodes 11a and 11b. .
The lead wires 2a and 2b of the voice coil 2 are made to pass through the slits 10 and extended
to the attachment side of the cap 9 with respect to the terminal blocks 11a and 11b, and divided
into positive and negative poles and flat portions 41 of the terminal fittings 4a and 4b. And are
electrically connected.
[0028]
In this lead wire wiring structure, the lead wires 2a and 2b of the voice coil 2 can be stably wired
in a short distance via the slit 10, and can be reliably electrically connected and fixed to the flat
plate portions 41 of the terminal fittings 4a and 4b.
[0029]
On the lead-out side of the lead wire continuous from the diaphragm 3, it is preferable to provide
an arc-shaped curved chamfered portion 12 on the outer peripheral edge of the housing 1 so as
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to be continuous with the back side of the slit 10 as shown in FIG.
The chamfered portion 12 prevents damage to the insulating coating of the lead wires 2a and 2b
which are passed through the slit 10 and stretched on the attachment side of the cap 9.
[0030]
The diaphragm 3 is provided with an outer peripheral portion 3a fixed to the housing 1 as shown
in FIG. 2 and a central portion 3b to which a voice coil (not shown) is attached, and the lead wire
2a of the voice coil , 2b may be pulled out from the seam formed by the flanges of the outer
peripheral portion 3a and the central portion 3b and integrally joined.
[0031]
With this lead wire drawing structure, since the lead wires 2a and 2b of the voice coil can be
wired outside the outer peripheral portion 3a, the lead wires 2a and 2b of the voice coil 2 do not
contact the magnetic circuit portion provided inside the housing 1. Wiring can be done to
prevent breakage of the lead wire.
[0032]
The terminal block 11a (11b) is shown in FIG. 7 and FIG. 8 (hereinafter, the same component of
each terminal block is indicated by a single code.
Left and right of the recessed portion 100 with a projected dimension larger than that of the
recessed portion 100 going back to the center, the top plate portion 101 and the bottom plate
portion 102 partitioning the top and bottom of the recessed portion 100, and the top plate
portion 101 and the bottom plate portion 102). It is formed of the side plate parts 103 and 104
which divide.
[0033]
The terminal fitting 4a (4b) is provided with a bent metal plate having conductivity such as
phosphor bronze or titanium copper.
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This terminal metal fitting 4a (4b) arranges a U-shaped insertion plate portion 42 at the center as
shown in FIGS. 9 to 12, and maintains a predetermined clearance from one side end of the
insertion plate portion 42. A feed land connection that curves in a chord-like manner from a flat
plate portion 41 for lead wire connection bending in parallel through the rising plate portion 43
and a plate spring portion 44 extending obliquely downward from the other side end of the
fitting plate portion 42 And a contact portion 40 for the purpose.
[0034]
The terminal fitting 4a (4b), as shown in FIG. 13, press-fits the U-shaped fitting plate portion 42
from the bridging plate portion 42a toward the recessed portion 100 of the terminal block 11a
(11b), and the terminal block 11a (11b) of the top plate portion 101 is sandwiched from the flat
plate portion 41 for lead wire connection and the upper end side 42b of the fitting plate portion
42 to fit the fitting plate portion 42 into the inside of the recess 100, feed land The connection
contact portion 40 is attached by projecting from the bottom plate portion 102 of the terminal
block 11a (11b) and supporting the connection by the side plate portions 103 and 104.
[0035]
Due to the fitting structure of the terminal fitting 4a (4b), the upper end side 42b and the lower
end side 42c of the fitting plate 42 are in pressure contact with the top plate 101 and the bottom
plate 102 of the recess 100 as shown in FIG. Since the top plate portion 101 of the terminal
block 11a (11b) is held between the flat plate portion 41 for lead wire connection and the upper
end side 42b of the fitting plate portion 42, the fitting plate portion 42 is directed to the recess
100 The terminal fitting 4a (4b) can be firmly attached and fixed to the terminal block 11a (11b)
simply by press fitting.
[0036]
At the same time, by making the contact portion 40 project from the bottom plate portion 102 of
the terminal block 11a (11b) and supporting it by the both side plate portions 103 and 104, the
terminal metal fitting 4a (4b) is not protruded outward. Since it is housed inside (11b) and
attached, the whole device can be assembled into a compact one.
[0037]
In addition to the configuration of the terminal fitting and the terminal block, the upper end of
the fitting plate portion 42 is formed by projecting a plurality of projecting teeth 45a, 45b from
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the outer edge of the terminal fitting 4a, 4b as shown in FIGS. Spring arm portions 46a and 46b
which are vacant at the sides extend from the side 42b to both sides.
On the other hand, in the terminal block 11a (11b), as shown in FIG. 8 and FIG. 13, the receiving
rails 105a, 105b facing the top plate portion 101 with a gap corresponding to the thickness of
each spring arm 46a, 46b. It is provided in the inner surface of the both-sides plate part
103,104.
[0038]
In this configuration, the spring arm portions 46a and 46b of the terminal fitting 4a (4b) are
fitted between the top plate portion 101 of the terminal block 11a (11b) and the receiving bars
105a and 105b of the side plate portions 103 and 104, respectively. Since 45a... 45b... Are
resiliently engaged to the inner surfaces of the side plate portions 103 and 104, the terminal
fitting 4a (4b) can be attached and fixed to the terminal block 11a (11b) more firmly.
[0039]
Further, the terminal metal fitting 4a (4b) is provided so that the blade plate portion 47 is bent
inward from the tip of the contact portion 40 which curves upward in a chord shape from the
spring plate portion 44 and extends in the direction of both side plates of the terminal block 11a
(11b) ing.
On the other hand, in the terminal block 11a (11b), the receiving rails 106a and 106b for
receiving and supporting the blade plate portion 47 of the terminal fitting 4a (4b) according to
the elastic displacement of the plate spring portion 44 are both side plate portions 103 and 104.
Provided on the inner surface of the
[0040]
In this configuration, as shown in FIG. 15, the terminal fitting 4a (4b) can be spring displaced as
the contact portion 40 is pressed against the feed land r1 (r2) of the circuit board P, and the
receiving rails 106a, 106 By pressing the blade plate portion 47 as a stopper, the pressure
contact force to the feed land r1 (r2) can be kept strong, and the electrical contact by the
terminal fitting 4a (4b) can be reliably taken.
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[0041]
The receiving bars 106a and 106 of the blade plate portion 47 are integrally provided on the
back of the receiving bars 105a and 105b of the spring arm portions 46a and 46b.
Also, the receiving bars 107a and 107b of the vane plate 47 for positioning and restricting the
projecting attitude of the contact point 40 are provided inside along the lower end sides of the
side plate portions 103 and 104 when the terminal fitting 4a (4b) is fitted and attached. (See FIG.
8 and FIG. 13).
[0042]
In addition to the above, the terminal metal fitting 4a (4b) is provided with a protrusion 48 in
contact with the feed land r1 (r2) of the circuit board P at the center of the plate surface along
the arc direction of the contact portion 40.
The protrusion 48 can reinforce the contact portion 40 as a rib, and no deformation occurs even
if the contact portion 40 is brought into strong contact with the feed land r1 (r2) of the circuit
board P. Thus, the terminal fitting for the feed land r1 (r2) Electrical contact can be taken more
reliably.
[0043]
In the electromagnetic induction type actuator device provided with such a terminal fitting, the
installation side of the diaphragm 3 is directed to the plate surface of the circuit board P, and the
opposite side is directed to the panel surface of the housing C, and assembled in equipment. In
addition, by suppressing the AC magnetic field from coming out of the housing C, the influence
on the magnetic recording card and the like can be prevented.
[0044]
At the same time, the terminal fitting 4a (4b) is electrically connected in a circuit with the feed
land r1 (r2) of the circuit board P to be easily assembled in the device, and the terminal fitting 4a
(4b) is a terminal block of the housing 1 By being firmly attached to 11a (11b), the circuit can be
electrically reliably connected to the feeding land r1 (r2) of the circuit board, and the entire
device can be compactly assembled.
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[0045]
The terms and expressions used in the present specification are used to explain the present
invention in an easy-to-understand manner, and the terms and expressions do not limit the
technical concept of the present invention.
Even if limited terms and expressions are used, this is not intended to exclude equivalent or a
part of the form of the present invention described above.
[0046]
In particular, in the assembly direction of the electromagnetic induction type actuator device, the
side facing the housing panel of the device main body is the upper side, and the side facing the
plate surface of the circuit board is the lower side. For the sake of convenience, the expressions
of the top plate portion and the bottom plate portion of the terminal block are the same.
For this reason, it is possible to make changes in various expressions within the scope of the
present invention as claimed.
[0047]
As described above, according to the electromagnetic induction type actuator device according to
claim 1 of the present invention, the contact portion to be in electrical contact with the feed land
of the circuit board is provided on the attachment side of the diaphragm. The terminal fitting is
provided with a flat plate part electrically connected to the lead wire on the opposite side to the
attachment side of the diaphragm, and the lead wire of the voice coil drawn from the diaphragm
to the outside of the housing is stretched in the opposite direction from the attachment side of
the diaphragm Separate the lead wire of the voice coil on the flat plate of the terminal fitting and
positive and negative poles on the opposite side of the diaphragm mounting side and electrically
connect the diaphragm mounting side to the board surface of the circuit board. In order to
construct a reverse type as being equipped inside the case, the equipment with the leakage flux
side of the diaphragm facing the board surface of the circuit board Can be mounted on the circuit
board, so that the influence of the AC magnetic field on the magnetic recording cards can be
suppressed, and the lead wire of the voice coil is soldered on the opposite side of the diaphragm
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mounting side. It can be easily assembled and installed in equipment by not interfering with the
electrical connection with the feed land.
[0048]
According to the electromagnetic induction type actuator device according to claim 2 of the
present invention, the terminal block is provided with a slit for dividing into positive and negative
poles at the center, and the lead wire of the voice coil drawn out of the housing is the terminal
block. Pass through the slit of the diaphragm and stretch it in the opposite direction from the
mounting side of the diaphragm, and divide the lead of the voice coil into positive and negative
poles on the opposite side of the mounting side of the diaphragm to electrically connect with the
flat plate of the terminal fitting As a result, the lead wire of the voice coil can be stably wired in a
short distance and can be electrically connected to the flat plate portion of the terminal fitting
securely.
[0049]
According to the electromagnetic induction type actuator device according to claim 3 of the
present invention, the recessed portion having a projected dimension larger than the recessed
portion, the top plate portion and the bottom plate portion of the recessed portion, and the top
plate portion and the bottom plate portion. A terminal block for plus and minus poles is provided
on the side wall of the housing from both side plate parts of the part, and a U-shaped fitting plate
part is disposed at the center, and predetermined from one side edge of the fitting plate part
Plate portions for connecting lead wires bending in parallel while maintaining a gap between
them, and a contact portion for feeding land connection which curves like a chord from the plate
spring portion which is inclined downward from the other side end of the fitting plate portion.
And fitting the fitting plate portion to the recessed portion of the terminal block by sandwiching
the top plate portion of the terminal block from the flat plate portion for lead wire connection
and one end of the fitting plate portion, and feeding Contact point for land connection is
projected from bottom plate of terminal block and supported by both side plates By mounting
the terminal fitting into the terminal block with fitted structure, it can be firmly attached and
fixed to the terminal fitting into the terminal block simply pressed toward the fitting plate portion
to the recessed portion.
[0050]
According to the electromagnetic induction type actuator device according to claim 4 of the
present invention, the terminal metal fittings are provided with the spring arms having the
projecting teeth protruding from the outer edge and extending to both sides from one end side of
the fitting plate. There is a gap equivalent to the thickness of the plate, and a bearing is provided
on the inner surface of both side plates, facing the top plate of the terminal block, and the spring
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arm is fitted between the top plate of the terminal block and the receiving beam of both side
plates. The terminal fitting can be attached and fixed to the terminal block more firmly by
attaching the terminal fitting to the terminal block with a fitting structure in which the projecting
teeth are resiliently engaged to the inner surfaces of the side plate portions.
[0051]
According to the electromagnetic induction type actuator device according to claim 5 of the
present invention, the terminal plate is a plate member which is bent inward from the tip of the
contact portion which curves upward from the spring plate portion and extends in the direction
of both plates of the terminal block. The terminal fitting is mounted on a terminal block with a
fitting structure in which a bearing is provided on the inner surface of both side plate parts, and
the contact piece is assembled in a spring-displaceable manner. The terminal fitting can be
spring-displaced as the contact part is in pressure contact with the feed land of the circuit board
P by attaching it to the terminal board, and the receiving block can hold the blade plate part and
can strongly maintain the pressing force against the feed land. The electrical contact by the
circuit board can be reliably made with the feed land of the circuit board.
[0052]
According to the electromagnetic induction type actuator device pertaining to the sixth aspect of
the present invention, by providing the terminal fitting provided in the center of the plate surface
with the ridge in contact with the feed land of the circuit board along the arc direction of the
contact portion, Even if the contact portion is brought into strong contact with the feed land of
the circuit board, no deformation occurs, so that the electrical contact of the terminal fitting with
the feed land can be made more reliably.
[0053]
According to a portable information device including a mobile phone or the like according to
claim 7 of the present invention, the electromagnetic induction type actuator device according to
any one of claims 1 to 6 is used as a vibration generation, voice generation, buzzer sound
generation device By being equipped, it can be configured as a portable information device
capable of suppressing the influence of the AC magnetic field.
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