close

Вход

Забыли?

вход по аккаунту

?

DESCRIPTION JP2013077918

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
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 JP2013077918
Abstract: To secure the reliability of an electrodynamic exciter and to miniaturize it. SOLUTION:
An opening 42b penetrating the upper surface wall 42 in the vertical direction is formed at a
position on the inner peripheral side of the coil 20 in the upper surface wall 42 of the case 40
covering the coil 20 and the magnetic circuit unit 30 from the upper side. At the same time, on
the upper surface of the upper surface wall 42 of the case 40, a stepped portion 42c surrounding
the opening 42b and extending to the peripheral portion of the upper surface wall 42 is formed.
In addition, a printed circuit board 70 as a wiring member having a pair of terminal portions is
attached to the stepped portion 42c in a state where one end portion of each conductive film 70a
as each terminal portion is positioned in the opening 42b. Configure Then, each of the pair of coil
terminals 20a extending from the coil 20 is conductively fixed to one end of each conductive film
70a in a state of being drawn around the inner periphery of the coil 20. [Selected figure] Figure 5
Electrodynamic exciter
[0001]
The present invention relates to an electrodynamic exciter used in a state of being attached to an
excitation panel in order to vibrate the excitation panel (for example, a touch panel of a liquid
crystal display).
[0002]
2. Description of the Related Art Conventionally, in a portable device or the like provided with a
12-04-2019
1
liquid crystal display, a speaker configured to vibrate a touch panel of the liquid crystal display is
known as a speaker thereof.
An electrodynamic exciter is known as one of the actuators for driving this speaker.
[0003]
The electrodynamic exciter includes a coil, a magnetic circuit unit in which a magnetic gap is
formed to accommodate the lower end of the coil, and the coil and the magnetic circuit unit are
arranged to cover the coil from above. It is configured to include a case for fixedly supporting
and a suspension for supporting the magnetic circuit unit so as to be vertically displaceable with
respect to the case. The electrodynamic exciter is configured to be attached to the excitation
panel on the top wall of the case.
[0004]
In such an electrodynamic exciter, each of a pair of coil terminals extending from the coil is
drawn to the outer peripheral side of the magnetic circuit unit, as conventionally described in, for
example, “patent document 1”. In this state, each of the pair of terminal portions is electrically
connected and fixed.
[0005]
JP, 2011-114763, A
[0006]
The above-described conventional electrodynamic exciter has a configuration in which each coil
terminal is conductively fixed to each terminal portion on the outer peripheral side of the
magnetic circuit unit, so there is a problem that the electrodynamic exciter becomes large. .
[0007]
Further, in the above-described conventional electrodynamic exciter, each coil terminal is drawn
to the outer peripheral side via the magnetic circuit unit that vibrates in the vertical direction, so
the magnetic circuit unit is a coil terminal. There is a problem that there is a risk of breaking the
wire by touching it.
12-04-2019
2
[0008]
Furthermore, in the above-mentioned conventional electrodynamic exciter, when the magnetic
circuit unit vibrates in the vertical direction, each coil terminal vibrates somewhat due to the
vibration reaction force, but the frequency at that time is the characteristic vibration of the coil
terminal. When the number is matched, there is a problem that the coil terminal vibrates largely,
and there is a possibility that disconnection may occur at the proximal end or the distal end.
[0009]
The present invention has been made in view of such circumstances, and it is an object of the
present invention to provide an electrodynamic exciter which can be miniaturized while securing
the reliability of the electrodynamic exciter. It is
[0010]
The present invention achieves the above object by devising the configuration of the case and the
routing structure of the coil terminal.
[0011]
That is, the electrodynamic exciter according to the present invention comprises: a coil, a
magnetic circuit unit having a magnetic gap for accommodating the lower end of the coil, and the
coil and the magnetic circuit unit so as to cover from above. An upper surface wall is provided
with a case for fixedly supporting the coil, and a suspension for supporting the magnetic circuit
unit so as to be vertically displaceable with respect to the case. The upper surface wall of the
case is configured to be attached to an excitation panel. In the dynamic exciter described above,
an opening passing through the upper surface wall in the vertical direction is formed at a
position on the inner peripheral side of the coil in the upper surface wall of the case, and the
upper surface of the upper surface wall of the case is A step-down portion surrounding the
opening and extending to the peripheral portion of the upper surface wall is formed. A wiring
member having a pair of terminal portions is attached with the terminal portions positioned in
the opening, and each of the pair of coil terminals extending from the coil has an inner periphery
of the coil. It is characterized in that it is conductively fixed to each of the terminal portions in a
state of being drawn around to the side.
[0012]
In the above configuration, the term indicating the directionality such as "lower end" or "upper
side" is used for the sake of convenience to clarify the positional relationship between the
members constituting the electrodynamic exciter, This does not limit the directionality when
12-04-2019
3
actually using the electrodynamic exciter.
[0013]
The “opening” is not particularly limited in its specific shape, formation position, etc., as long
as it is formed to penetrate the upper surface wall in the vertical direction at a position on the
inner peripheral side of the coil.
[0014]
The above "conduction fixing" means fixing in an electrically connected manner, and the specific
method is not particularly limited, and for example, soldering, thermocompression bonding, etc.
can be adopted. It is.
[0015]
As shown in the above configuration, the electrodynamic exciter according to the present
invention penetrates the upper wall in the vertical direction at a position on the inner peripheral
side of the coil on the upper wall of the case covering the coil and the magnetic circuit unit from
the upper side. An opening is formed, and a stepped portion surrounding the opening and
extending to the peripheral portion of the upper surface wall is formed on the upper surface of
the upper surface wall of the case, and the pair of stepped portions A wiring member having
terminal portions is attached with the respective terminal portions positioned in the opening, and
each of a pair of coil terminals extending from the coil is wound around the inner periphery of
the coil. In this state, the terminals are electrically fixed to the respective terminal portions, so
that the following effects can be obtained.
[0016]
That is, in the electrodynamic exciter according to the present invention, since each coil terminal
is conductively fixed to each terminal portion on the inner peripheral side of the coil, each coil
terminal is a magnetic circuit unit as in the prior art. It is possible to eliminate the need for
conducting and fixing to each terminal on the outer peripheral side, whereby the electrodynamic
exciter can be miniaturized.
[0017]
Further, in the electrodynamic exciter according to the present invention, each coil terminal is
wound around the inner periphery of the coil, so even if the magnetic circuit unit vibrates in the
vertical direction, the coil terminal contacts the coil terminal. There is no risk that the coil
terminal may be broken.
12-04-2019
4
[0018]
Furthermore, in the electrodynamic exciter according to the present invention, each coil terminal
is wound around the inner periphery of the coil, so each coil terminal is wound around the outer
periphery of the coil. In this case, the total length can be greatly shortened and the mass can be
sufficiently reduced.
Therefore, it is possible to prevent in advance that the coil terminal resonates and largely
vibrates due to the vibration of the magnetic circuit unit, thereby eliminating the possibility of
occurrence of disconnection at the proximal end portion or the distal end portion of the coil
terminal. be able to.
[0019]
At that time, in the dynamic exciter according to the present invention, the wiring member is
attached to the step-down portion formed on the upper surface wall of the case with the
respective terminal portions positioned in the opening. The wiring member can be disposed in
such a manner as not to project upward beyond the upper surface of the upper surface wall,
whereby the mounting to the excitation panel can be appropriately performed.
[0020]
As described above, according to the present invention, it is possible to miniaturize the
electrodynamic exciter after securing the reliability thereof.
[0021]
On the other hand, even when it is not necessary to reduce the size of the electrodynamic exciter,
as in the present invention, by adopting a configuration in which each coil terminal is
conductively fixed to each terminal on the inner peripheral side of the coil, The size of the
magnetic circuit unit can be increased by that amount, and the mass of the vibrating portion of
the electrodynamic exciter can be increased, so that the minimum resonance frequency F0 of the
electrodynamic exciter can be set to a low value.
12-04-2019
5
Therefore, it becomes possible to easily configure this electrodynamic exciter as a Haptics (tactile
feedback) compatible electrodynamic exciter.
In addition, since the size of the magnetic circuit unit is increased and the size of the magnet is
also increased, it is possible to improve the vibration characteristics by increasing the Lorentz
force.
[0022]
In the above configuration, when the groove portion for inserting a pair of coil terminals is
formed in the upper surface wall of the case, each coil terminal can be drawn around within the
thickness range of the upper surface wall of the case. As a result, the electrodynamic exciter can
be made thinner.
Moreover, by adopting such a configuration, even if the magnetic circuit unit has an excessive
amplitude and collides with the upper surface wall of the case, the coil terminal is damaged by
this, causing disconnection. Can be prevented in advance.
[0023]
In the above configuration, when the annular rib is formed on the lower surface of the upper
surface wall of the case, and the upper end of the coil is fixed to the lower surface of the annular
rib, only the height of the annular rib A wide vertical distance between the top wall of the case
and the magnetic circuit unit can be secured.
And thereby, in the opening part of the upper surface wall of a case, the downward protrusion
part formed in conduction | electrical_connection fixation part of each coil terminal and each
terminal part (For example, when conduction | electrical_connection fixation is performed by
soldering, It is possible to easily avoid that a lump, an overcoat formed additionally when the
conduction fixing is performed by thermocompression bonding, and the like interfere with the
magnetic circuit unit when it vibrates.
[0024]
12-04-2019
6
In the above configuration, when the magnetic circuit unit is an internal magnetic type magnetic
circuit unit disposed on the inner circumferential side of the coil, it is fixed to the base of the
substantially U-shaped cross section fixed to the lower surface of the magnet and the upper
surface of the magnet The magnetic gap is formed by the flat plate-like yoke, and the recess in
the step down with respect to the upper surface of the yoke or the yoke in the vertical direction
is formed in the portion of the yoke located below the opening of the case. With the
configuration in which the opening portion is formed, it is possible to make the electrodynamic
exciter thinner while avoiding the interference between the lower protruding portion and the
magnetic circuit unit.
[0025]
In the above configuration, the specific configuration of the wiring member is not particularly
limited. However, if the wiring member is formed of a printed circuit board, the wiring member
can be made thinner, and thereby the wiring member can be used as a case. It is easier to
arrange within the thickness range of the top wall of the
Further, by configuring the wiring member with the printed circuit board in this manner, the
operation for electrically fixing each coil terminal to each terminal portion can be easily
performed.
[0026]
(A) is a perspective view showing an electrodynamic exciter according to an embodiment of the
present invention as viewed obliquely from above, and (b) is a perspective view showing an
electrodynamic exciter as viewed obliquely from below A perspective view showing the exciter
disassembled into main components and viewed from diagonally above The perspective view (a)
of the electrodynamic exciter disassembled into main components and viewed from diagonally
lower shows the electrodynamic exciter FIG. 4 is a plan view, FIG. 4 (b) is a view in the direction
of arrow b in FIG. 4 (a), and FIG. 4 (c) is a view in the direction of arrow c in FIG. V-V line
sectional view of (a) VI direction arrow view of FIG. 5 VII-VII line sectional view of FIG. 6 a
perspective view showing the suspension of the above-mentioned electrodynamic exciter
obliquely from above two deformations of the above embodiment FIG. 6 is a view similar to FIG.
5 showing an electrodynamic exciter according to an example, wherein FIG. Shows a first
modification, FIG. (B) are diagrams showing a second modification
[0027]
12-04-2019
7
Hereinafter, embodiments of the present invention will be described using the drawings.
[0028]
FIG. 1 (a) is a perspective view showing an electrodynamic exciter 10 according to an
embodiment of the present invention as viewed from obliquely above, and FIG. 1 (b) is a
perspective view showing it from obliquely below. is there.
Further, FIG. 2 is a perspective view showing the electrodynamic exciter 10 disassembled into
main components and viewed from diagonally above, and FIG. 3 is a perspective view viewed
from diagonally below.
[0029]
FIG. 4 (a) is a plan view showing the electrodynamic exciter 10, and FIG. 4 (b) is a view taken in
the direction of arrow b in FIG. 4 (a), and FIG. C) of FIG.
5 is a cross-sectional view taken along the line V-V in FIG. 4 (a), FIG. 6 is a view taken in the
direction of arrow VI in FIG. 5, and FIG. 7 is a cross-sectional view taken along the line VII-VII in
FIG. is there.
[0030]
As shown in these figures, the electrodynamic exciter 10 according to the present embodiment
includes a coil 20, a magnetic circuit unit 30 in which a magnetic gap for housing the lower end
of the coil 20 is formed, the coil 20 and the magnetic circuit unit 30. A case 40 is disposed to
cover the circuit unit 30 from the upper side, and a case 40 for fixedly supporting the coil 20 on
the upper surface wall 42, and a suspension 50 for supporting the magnetic circuit unit 30 so as
to be vertically displaceable with respect to the case 40 It has a built-in configuration.
[0031]
Then, as shown in FIG. 5, this electrodynamic exciter 10 is used in a state where it is attached to
12-04-2019
8
the excitation panel 2 such as a touch panel of a liquid crystal display by sticking or the like on
the upper surface wall 42 of the case 40. It has become.
At this time, the dynamic exciter 10 is configured such that the coil 20 is supplied with power,
the magnetic circuit unit 30 vibrates in the vertical direction, and the vibration reaction force
vibrates the excitation panel 2.
[0032]
The case 40 is a resin molded product made of liquid crystal polymer or the like, and has a
rectangular outer shape in plan view, and a circumferential surface wall 44 extending downward
from the outer peripheral edge of the upper surface wall 42 There is.
At that time, the length of the long side of the upper surface wall 42 in the case 40 is set to a
value of about 15 to 19 mm (for example, about 17 mm), and the length of the short side is about
10 to 14 mm ( For example, it is set to a value of about 12 mm.
Further, the height of the circumferential wall 44 in the case 40 is set to a value of about 3 to 7
mm (for example, about 5 mm).
[0033]
In the circumferential wall 44, the four corner portions 44A protrude to the inner peripheral side
with respect to the other side portions 44B1 on the long side and the side portions 44B2 on the
short side. It is formed as a columnar part of
Further, lower end surfaces of the side surface portions 44B1 and 44B2 of the circumferential
surface wall 44 are formed as stepped surfaces 44B1a and 44B2a that are higher than the lower
end surfaces 44Aa of the corner portions 44A.
[0034]
12-04-2019
9
The coil 20 is wound in a horizontally long rectangular shape which is slightly smaller than the
outer shape of the case 40, and a pair of coil terminals 20a extend from the upper end edge of
the central portion of the short side toward the inner peripheral side. .
The fixed support of the coil 20 to the upper surface wall 42 of the case 40 is performed by
bonding the upper end edge of the coil 20 to the lower surface of an annular rib 42 a formed on
the lower surface of the upper surface wall 42.
[0035]
The magnetic circuit unit 30 is an internal magnetic type magnetic circuit unit in which the
magnet 32 is disposed on the inner peripheral side of the coil 20, and the base 34 and the upper
surface of the magnet 32 are fixed to the lower surface of the magnet 32. The magnetic gap is
formed with the flat yoke 36 fixed to the
[0036]
The suspension 50 is formed like a leaf spring by punching out a metal plate such as stainless
steel having a thickness of about 0.1 to 0.3 mm (for example, about 0.2 mm).
The suspension 50 is composed of a central portion 52 formed in a substantially rectangular ring
shape and four flexible arms 54A and 54B extending from the central portion 52.
The suspension 50 is fixed to the lower surface of the base 34 of the magnetic circuit unit 30 at
its central portion 52 by adhesion or the like, and the four flexible arms 54A and 54B allow the
magnetic circuit unit 30 and the case 40 to be fixed. And are connected in four places.
[0037]
Tip portions 54A1 and 54B1 of the flexible arms 54A and 54B on the case 40 side are fixed to
lower end surfaces 44Aa of the corner portions 44A of the circumferential wall 44 of the case
40.
12-04-2019
10
Each of the flexible arms 54A and 54B is formed to extend in the same circumferential direction
from the tip end portions 54A1 and 54B1.
[0038]
Of the four flexible arms 54A and 54B, two flexible arms 54A are formed to be longer than the
remaining two flexible arms 54B.
And each long flexible arm 54A is formed to extend along each side face 44B1 from the tip end
54A1 below each stepped surface 44B1a, and each short flexible The arm 54B is formed to
extend along the side surface portions 44B2 from the tip end portion 54B1 below the step rising
surfaces 44B2a.
[0039]
At this time, the flexible arms 54A and 54B extend to the vicinity of the corner 44A adjacent in
the same circumferential direction with respect to the corner 44A to which the tip 54A1 and
54B1 are fixed.
The proximal end portions 54A2 and 54B2 of the flexible arms 54A and 54B on the magnetic
circuit unit 30 side are formed in a substantially L shape bent toward the inner peripheral side,
and the proximal end portions 54A2 and 54B2 are formed. It is connected to each corner of
central part 52.
[0040]
FIG. 8 is a perspective view of the suspension 50 as viewed obliquely from above.
[0041]
As also shown in the figure, at the tip portions 54A1 and 54B1 of the flexible arms 54A and 54B
in the suspension 50, protruding pieces 54A1a and 54B1a bent upward along a vertical plane
12-04-2019
11
substantially orthogonal to the longitudinal direction It is formed.
Downward cut-and-raised pieces 54A1b, 54B1b cut and raised toward the proximal end portions
54A2, 54B2 of the flexible arms 54A, 54B are formed at the central portions of the respective
projecting pieces 54A1a, 54B1a. .
[0042]
On the other hand, as shown in FIG. 6, in the lower end surface 44Aa of each corner 44A in the
circumferential wall 44 of the case 40, a vertical groove 44Aa1 is formed, into which the
projection pieces 54A1a and 54B1a are press-fitted and fixed.
At that time, when the projection pieces 54A1a and 54B1a are inserted into the vertical groove
44Aa1, the cut-and-raised pieces 54A1b and 54B1b are engaged with the side wall of the vertical
groove 44Aa1 to perform press-fitting and fixing.
[0043]
As shown in FIGS. 2 and 3, the base 34 of the magnetic circuit unit 30 has side walls 34B1 and
34B2 extending upward from the outer peripheral edge of the lower wall 34A along the side
parts 44B1 and 44B2 of the case 40. A vertically extending gap is formed at a corner between
the side walls 34B1 and 34B2.
And notches 34B1a and 34B2a are formed at the lower end of the end in the same
circumferential direction of the side walls 34B1 and 34B2 of the base 34 so as to expand the
gap.
[0044]
By forming such notches 34B1a and 34B2a, as shown in FIG. 6, the base end portions 54A2 and
54B2 of the flexible arms 54A and 54B contact the lower surface wall 34A of the base 34.
Position as far as possible from its tip 54A1, 54B1 in order to maximize the length of each
flexible arm 54A, 54B.
12-04-2019
12
[0045]
As shown in FIG. 7, the case 40 is provided with a pair of stoppers 60 that abut the magnetic
circuit unit 30 when the magnetic circuit unit 30 is displaced downward by a predetermined
amount.
[0046]
Each of the stoppers 60 is a plate-like member attached to the step-up surface 44B2a of each
side surface portion 44B2 on the short side of the circumferential surface wall 44 of the case 40.
At this time, each of the stoppers 60 extends along substantially the entire length along the stepup surface 44B2a, and a ridge portion 60a which is bent inward of the case 40 is formed at the
end in the same circumferential direction.
Further, in each of the stoppers 60, a hole 60b for engagement is formed at the two places.
[0047]
On the other hand, two bosses 44B2b and 44B2c having different heights are formed at the two
raised portions on the step-up surfaces 44B2a of the side surface portions 44B2 on the short
side of the circumferential wall 44 of the case 40.
Then, with the bosses 44B2b and 44B2c inserted into the holes 60b of the stopper 60, the
stoppers 60 are adhered to the stepped surfaces 44B2a, whereby the positioning and fixing of
the stoppers 60 are performed. It is supposed to be.
[0048]
Of the notches 34B1a and 34B2a formed in the side walls 34B1 and 34B2 of the base 34 of the
magnetic circuit unit 30, the notches 34B2a formed on the side walls 34B2 on the short side are
the respective sides on the long side. It is expanded and formed above the notch 34B1a formed
12-04-2019
13
in the side wall 34B1. Then, the notch 34B2a formed in each side wall 34B2 on the short side
avoids interference with the stopper 60, and then the flange of the stopper 60 when the
magnetic circuit unit 30 is displaced downward by a predetermined amount. It comes in contact
with 60a.
[0049]
As shown in FIG. 4, notches 44Aa2 are respectively formed at the same circumferential direction
end of the lower end surface 44Aa of each corner 44A in the circumferential wall 44 of the case
40.
[0050]
As shown in FIG. 2, in the upper surface wall 42 of the case 40, an opening 42b penetrating the
upper surface wall 42 in the vertical direction is formed in the central portion (that is, the portion
located on the inner peripheral side of the annular rib 42a). It is done.
Further, on the upper surface of the upper surface wall 42, a stepped portion 42c is formed so as
to surround the opening 42b. At this time, the opening 42 b and the stepped portion 42 c are
formed in a horizontally long rectangular shape substantially similar to the outer shape of the
case 40.
[0051]
A step-down portion 44B2d which is deeper than the step-down portion 42c is formed at the
upper end portion of one side surface portion 44B2 of the pair of side surface portions 44B2 on
the short side, along the ridge line between the side surface portion 44B2 and the upper surface
wall 42. It is formed to extend. At this time, the stepped portion 44B2d is formed in substantially
the same range as the short side portion of the stepped portion 42c. Further, in the step-down
portion 42c, a belt-like extension portion 42c1 extending in a band shape to the step-down
portion 44B2d toward the side surface portion 44B2 on the one short side is formed.
Furthermore, in the upper surface wall 42 of the case 40, there is a groove 42d extending from
the opening 42b to the vicinity of the step-down portion 44B2d in the width direction central
part of the strip extension 42c1 so as to penetrate the upper surface wall 42 in the vertical
direction. It is formed.
12-04-2019
14
[0052]
A printed circuit board 70 as a wiring member is attached to the upper surface wall 42 of the
case 40.
[0053]
The printed circuit board 70 has an outer shape substantially similar to the outer shape of the
entire stepped portion 42c, the belt-like extension portion 42c1 and the stepped portion 44B2d
in plan view, and has a substantially similar shape to these. The thickness is thinner than the
depth 42c.
The printed circuit board 70 is fixed to the upper surface wall 42 by an adhesive in a state where
the printed circuit board 70 is placed on the step-down portion 42 c and the belt-like extension
portion 42 c 1.
[0054]
As shown in FIG. 3, on the lower surface of the printed circuit board 70, a pair of left and right
conductive films 70a are formed, and the middle part of each conductive film 70a is covered with
an insulating film 70b. At this time, when the printed circuit board 70 is attached to the upper
surface wall 42, the respective conductive films 70a are formed such that one end thereof is
located at the opening 42b and the other end is located at the stepped portion 44B2d. ing.
[0055]
Then, as shown in FIG. 5, each of the pair of coil terminals 20 a extending from the coil 20 is
routed in such a manner as to pass through the groove 42 d on the inner peripheral side of the
coil 20. The conduction fixing, which is respectively conductively fixed to one end of the film
70a, is performed by thermocompression bonding, and an overcoat 72 is applied to the
thermocompression bonding portion.
[0056]
12-04-2019
15
A pair of wiring cords 74 is fixed by soldering to the other end of each of the pair of conductive
films 70 a before being attached to the upper surface wall 42 on the printed circuit board 70.
When the printed circuit board 70 is attached to the upper surface wall 42, the other end of the
pair of conductive films 70a is positioned at the step-down portion 44B2d, so a pair of soldered
wiring cords is formed. 74 does not inadvertently interfere with case 40.
[0057]
Next, the operation and effect of the present embodiment will be described.
[0058]
The dynamic exciter 10 according to the present embodiment vertically penetrates the upper
surface wall 42 at a position on the inner peripheral side of the coil 20 in the upper surface wall
42 of the case 40 covering the coil 20 and the magnetic circuit unit 30 from the upper side. An
opening 42b is formed, and a step-down portion 42c surrounding the opening 42b and
extending to the peripheral portion of the upper surface wall 42 is formed on the upper surface
of the upper surface wall 42 of the case 40. The printed circuit board 70 as a wiring member
having a pair of terminal portions is attached to the portion 42c in a state where one end portion
of each conductive film 70a as each terminal portion is positioned in the opening portion 42b, ,
Each of a pair of coil terminals 20a extending from the coil 20 being conductively fixed to one
end of each conductive film 70a in a state of being drawn around the inner periphery of the coil
20 Since a configuration has, it is possible to obtain the following effects.
[0059]
That is, in the dynamic exciter 10 according to the present embodiment, each coil terminal 20a is
conductively fixed to one end of each conductive film 70a on the inner peripheral side of the coil
20, as in the conventional case. It is not necessary to electrically fix each coil terminal 20a to
each terminal on the outer peripheral side of the magnetic circuit unit 30, thereby making it
possible to miniaturize the electrodynamic exciter 10.
[0060]
Further, in the dynamic exciter 10 according to the present embodiment, each coil terminal 20a
is drawn around the inner periphery of the coil 20, so even if the magnetic circuit unit 30
vibrates in the vertical direction There is no possibility of contact with the coil terminal 20a,
which can eliminate the possibility of disconnection of the coil terminal 20a.
12-04-2019
16
[0061]
Furthermore, in the electrodynamic exciter 10 according to the present embodiment, each coil
terminal 20a is drawn to the inner peripheral side of the coil 20, so each coil terminal 20a is
drawn to the outer peripheral side of the coil 20. Compared to the case where the configuration
is a turned configuration, the overall length can be significantly shortened and the mass can be
sufficiently reduced.
Therefore, it is possible to prevent in advance that the coil terminal 20a resonates and largely
vibrates due to the vibration of the magnetic circuit unit 30, thereby causing disconnection at the
proximal end or the distal end of the coil terminal 20a. You can eliminate the fear.
[0062]
At this time, in the dynamic exciter 10 according to the present embodiment, the printed board
70 has one end of the conductive film 70a of the stepped portion 42c formed on the upper
surface wall 42 of the case 40 as the opening 42b. And the printed circuit board 70 can be
disposed so as not to project upward beyond the upper surface of the upper surface wall 42,
whereby the attachment to the excitation panel 2 is properly made. It can be carried out.
[0063]
As described above, according to the present embodiment, it is possible to miniaturize the
electrodynamic exciter 10 after securing the reliability thereof.
[0064]
Moreover, in the electrodynamic exciter 10 according to the present embodiment, the upper wall
42 of the case 40 is formed with the groove 42 d for inserting the pair of coil terminals 20 a, so
each coil terminal 20a can be routed within the range of the thickness of the upper surface wall
42 of the case 40, whereby the electrodynamic exciter 10 can be made thinner.
Moreover, by adopting such a configuration, even if the magnetic circuit unit 30 has an excessive
amplitude and collides with the upper surface wall 42 of the case 40, the coil terminal 20a is
damaged by this, causing disconnection. It is possible to prevent the occurrence in advance.
12-04-2019
17
[0065]
In the dynamic exciter 10 according to the present embodiment, an annular rib 42a is formed on
the lower surface of the upper surface wall 42 of the case 40, and the upper end of the coil 20 is
fixed to the lower surface of the annular rib 42a. Because of this, the vertical interval between
the top wall 42 of the case 40 and the magnetic circuit unit 30 can be widely maintained by the
height of the annular rib 42a.
Then, in the opening 42b of the upper surface wall 42 of the case 40, the overcoat 72
additionally formed as a downward projecting portion at the thermocompression bonding
portion between each coil terminal 20a and one end of each conductive film 70a is a magnetic
circuit When the unit 30 vibrates, interference with the yoke 36 can be easily avoided.
[0066]
In the case where conduction fixing between each coil terminal 20a and one end of each
conductive film 70a is performed by soldering, a mass of solder is formed as a lower projecting
part in the conduction fixing part, but Even in any case, when the magnetic circuit unit 30
vibrates, it is possible to easily avoid that the solder block interferes with the yoke 36 of the
magnetic circuit unit 30.
[0067]
In the dynamic exciter 10 according to the present embodiment, since the wiring member is
formed of the printed circuit board 70, the wiring member can be made thinner, whereby the
thickness of the wiring member is the upper surface wall 42 of the case 40. It is easily possible to
arrange within the range of
Further, by forming the wiring member by the printed circuit board 70 in this way, it is possible
to easily carry out an operation for electrically fixing each coil terminal 20a to one end of each
conductive film 70a as each terminal portion.
[0068]
12-04-2019
18
By adopting the configuration of the above embodiment, the electrodynamic exciter 10 can be
miniaturized, but even if it is not necessary to miniaturize the electrodynamic exciter 10, each
coil as in the above embodiment can be used. When the terminal 20a is conductively fixed to one
end of each conductive film 70a on the inner circumferential side of the coil 20, the size of the
magnetic circuit unit 30 is increased by that amount, and the mass of the vibrating portion of the
electrodynamic exciter 10 Therefore, the lowest resonance frequency F0 of the electrodynamic
exciter 10 can be set to a low value.
Therefore, it is possible to easily configure this electrodynamic exciter 10 as a Haptics (tactile
feedback) compatible electrodynamic exciter.
In addition, since the size of the magnetic circuit unit 30 is increased, the size of the magnet 32 is
also increased, so that it is possible to improve the vibration characteristics by increasing the
Lorentz force.
[0069]
In the above embodiment, the case 40 has been described as having a horizontally long
rectangular outer shape in a plan view, but the case 40 may have another outer shape (e.g., an
outer shape such as a square or a circle). The same effect as that of the above embodiment can
be obtained.
[0070]
Next, modifications of the above embodiment will be described.
[0071]
FIG. 9 is a view similar to FIG. 5 showing an electrodynamic exciter according to two
modifications of the embodiment, and FIG. 9A is a diagram of an electrodynamic exciter 110
according to the first modification. FIG. 14B is a diagram showing an electrodynamic exciter 210
according to a second modification of the second embodiment.
[0072]
As shown in FIG. 9A, the basic configuration of the electrodynamic exciter 110 according to the
first modification is the same as that of the electrodynamic exciter 10 according to the above
12-04-2019
19
embodiment, but the magnetic circuit unit 130 The configuration of the yoke 136 in the second
embodiment is different from that of the above embodiment.
[0073]
That is, the yoke 136 of this modification is also formed in a flat plate shape like the yoke 36 of
the above embodiment, but in the portion positioned below the opening 42 b of the case 40 with
respect to the upper surface of the yoke 136. The configuration is such that a recessed portion
136a of a step-down is formed.
The recess 136 a is formed in a rectangular shape slightly smaller than the opening 42 b of the
case 40.
[0074]
By adopting the configuration of the present modification, in the opening 42b of the upper
surface wall 42 of the case 40, the thermocompression bonding portion between each coil
terminal 20a and one end of each conductive film 70a is additionally formed as a downward
protrusion. Even when the overcoat 172 is formed to be thicker than the overcoat 72 of the
above embodiment, when the magnetic circuit unit 130 vibrates, interference with the yoke 136
is more easily avoided. can do.
And thereby, management of the thickness of overcoat 172 can be simplified.
The same applies to the case where a mass of solder is formed as the lower projecting portion in
the conduction fixing portion.
[0075]
On the other hand, when the overcoat 172 can be controlled to a thickness equal to or less than
a predetermined value, the electrodynamic exciter 110 should be made thinner after avoiding the
interference between the overcoat 172 and the magnetic circuit unit 130. Can.
12-04-2019
20
[0076]
As shown in FIG. 9 (b), the basic configuration of the electrodynamic exciter 210 according to the
second modification is the same as that of the electrodynamic exciter 10 according to the above
embodiment, but the magnetic circuit unit 230 The configuration of the yoke 236 in the second
embodiment is different from that of the above embodiment.
[0077]
That is, the yoke 236 of this modification is also formed in a flat plate shape like the yoke 36 of
the above embodiment, but in the portion located below the opening 42 b of the case 40, the
yoke 236 is vertically It has a configuration in which an opening 236a penetrating is formed.
The opening 236 a is formed in a rectangular shape slightly smaller than the opening 42 b of the
case 40.
[0078]
By adopting the configuration of the present modification, in the opening 42b of the upper
surface wall 42 of the case 40, the thermocompression bonding portion between each coil
terminal 20a and one end of each conductive film 70a is additionally formed as a downward
protrusion. Even in the case where the overcoat 272 is formed thicker than the overcoat 72 of
the above embodiment, when the magnetic circuit unit 230 vibrates, interference with the yoke
236 and the magnet 32 is further enhanced. It can be easily avoided.
And thereby, management of the thickness of overcoat 272 can be simplified.
The same applies to the case where a mass of solder is formed as the lower projecting portion in
the conduction fixing portion.
[0079]
On the other hand, when the overcoat 272 can be controlled to a thickness equal to or less than
a predetermined value, after avoiding the interference between the overcoat 272 and the
magnetic circuit unit 230, the electrodynamic exciter 210 is used as a first modification. It can be
12-04-2019
21
thinner than in the case of
[0080]
In the electrodynamic exciter 110 according to the first modification, a recess 136a is formed in
the yoke 136, and in the electrodynamic exciter 210 according to the second modification, an
opening is formed in the yoke 236. 236a are formed, but in this case, since the recess 136a and
the opening 236a are formed at the central portion of the yokes 136 and 236 which hardly
affect the magnetic path of the magnetic circuit unit 130 and 230, With the magnetic circuit
performance of the magnetic circuit units 130 and 230 maintained, the above-described effects
can be obtained.
[0081]
The numerical values shown as specifications in the embodiment and the modifications described
above are merely examples, and it goes without saying that these may be set to different values
as appropriate.
[0082]
2 Excitation panel 10, 110, 210 Electrodynamic exciter 20 coil 20a Coil terminal 30, 130, 230
Magnetic circuit unit 32 Magnet 34 Base 34A Lower wall 34B1, 34B2 Side wall 34B1a, 34B2a
Notch 36, 136, 236 Yoke 40 case 42 upper surface wall 42a annular rib 42b opening 42c step
down 42c1 beltlike extension 42d groove 44 peripheral wall 44A corner 44Aa lower end face
44Aa1 vertical groove 44Aa2 notch 44B1, 44B2 side 44B1a, 44B2a step 44B2b, rising surface
44B2c Boss 44B2d Step-down part 50 Suspension 52 Central part 54A, 54B Flexible arm 54A1,
54B1 Tip part 54A1a, 54B1a Protrusion piece 54A1b, 54B1b cut And piece 54A2,54B2 proximal
end 60 stopper 60a hook 60b hole 70 a printed circuit board (wiring member) 70a conductive
film (terminal portion) 70b insulating film 72,172,272 overcoat 74 wire cord 136a recess 236a
opening
12-04-2019
22
Документ
Категория
Без категории
Просмотров
0
Размер файла
35 Кб
Теги
jp2013077918, description
1/--страниц
Пожаловаться на содержимое документа