close

Вход

Забыли?

вход по аккаунту

JP2003009493

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 JP2003009493
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
vibration body and a vibration body mounting structure which is incorporated in a mobile
communication device such as a mobile phone or PDA, a game machine or the like, and notifies a
user of an incoming call or sensation by vibration. About.
[0002]
2. Description of the Related Art Mobile communication devices such as cellular phones and
PDAs generally emit a buzzer or melody to notify the user of an incoming call, and the case of the
device without emitting a sound. A sound generator for generating sound similar to a small
speaker, and a vibrator that generates vibration by rotating an eccentric weight with a small
motor (for example, Japanese Patent Laid-Open No. 7). The structure disclosed in U.S. Pat. No. 107,699 is an example. Incorporating both the sound generator and the vibrator in this manner
is disadvantageous in terms of downsizing and cost reduction of the device. Therefore, in recent
years, one vibrating body that generates both sound and vibration has come to be used.
[0003]
An example of a conventional vibrator of this type will be described with reference to the
drawings. FIG. 4 shows a multi-function sounding body disclosed in Japanese Patent Application
13-05-2019
1
Laid-Open No. 11-68093, wherein (a) is a plan view and (b) is a cross-sectional view taken along
the line B-B of (a). In the figure, protectors provided on both sides of the multi-functional
sounding body are omitted. This multifunctional sounding body has a function as a sounding
body and a function as a vibrating body. The support member 55, which is a frame of the multifunction sounding body, has a rectangular contour and accommodates the magnetic circuit
portion 61 in a central circular cavity. The magnetic circuit portion 61 is formed by integrating
the yoke 56, the magnet 52, and the top plate 53, and an annular weight 59 is attached to the
outer periphery of the yoke 56. The movable portion 62 is composed of the magnetic circuit
portion 61 and the weight 59. Are configured. In the suspension 57, a support portion 57a is
attached to the upper surface of the weight 59 to support the movable portion 62, and a fixing
portion 57c at the tip of the arm portion 57b is fixed to the receiving portion of the support
member 55.
[0004]
The suspension 58 has the same shape as the suspension 57, but the supporting portion is
attached to the lower surface of the weight 59 to support the movable portion 62 at a position
rotated 90 ° in plan view with respect to the suspension 57. The fixing portion 58c at the tip of
the arm 58b is fixed to the receiving portion of the support member 55. An outer periphery of
the diaphragm 51 is attached to the lower surface of the support member 55, and a coil 54 fixed
to the diaphragm 51 is a gap between the inner periphery of the central recess of the yoke 56
and the outer periphery of the top plate 53. Is inserted in the The winding end of the coil 54 is
connected to the input terminal 60.
[0005]
When this multi-function sounding body is incorporated into the device, it is as shown in FIG.
That is, the support member 55 of the sound producing body is held by a gasket 45 made of a
rubber-based or silicon-based material, and the diaphragm 51 side is joined and fixed to the
device case 41 by a double-sided adhesive tape. At this time, the support member 55 is
supported via the gasket 45 by the circuit board 42 or the device case 41. The gasket 45 is a
member necessary for sound leakage prevention, and an acoustic space 43 is provided on the
front surface of the diaphragm 51, and an acoustic space 44 is provided on the rear side to allow
sound to escape. Furthermore, it was necessary to provide the sound output hole 41 a in the
device case 41.
13-05-2019
2
[0006]
When a signal current of an audible frequency flows in the coil 54, the diaphragm 51 vibrates by
receiving the attraction force of the magnetic circuit portion 61 to generate sound, and the
frequency of the signal is determined. In the case of the low mechanical vibration region, no
sound is emitted from the diaphragm 51, while the movable portion 62 vibrates to notify the
user of an incoming call. As a result, one sounding body operates for both sounding and vibration
according to the frequency of the supplied electric signal.
[0007]
However, in the conventional multi-functional sounding body having such a configuration, a thin
film-like diaphragm to which the coil is fixed is generated in the coil even when the low
frequency vibration is generated. This is a loss of vibration generation because it moves due to
the magnetomotive force. Therefore, it is not sufficient as a vibrating body that can obtain a
realistic sensation necessary for game machines and the like.
[0008]
The present invention has been made to solve such conventional problems, and its object is to
attach the housing of a device by attaching it to the housing of the device to be incorporated and
inputting a drive signal for sound. An object of the present invention is to provide a vibrating
body and a mounting structure of the vibrating body which can resonate the body to obtain a
realistic sensation.
[0009]
[Means for Solving the Problems] The means of the present invention for achieving the above
object is a deep pot-like yoke having an annular outer peripheral portion, and a disk-like member
fixed on the yoke. And a top plate fixed on the magnet to form a magnetic circuit portion, and a
support spring embedded in the frame elastically supports the magnetic circuit portion in the
frame and is a rigid body fixed to the frame A coil is fixed to a support plate, and the coil is
configured to be positioned in a magnetic gap formed by the outer periphery of the yoke and the
outer periphery of the top plate.
[0010]
Further, the coil support plate is fitted to the frame, and has a projecting portion projecting in an
13-05-2019
3
annular shape at a portion to which the coil is fixed.
[0011]
Further, the vibrating body is fixed so as to be in close contact with a housing of an apparatus to
be incorporated, and the housing is directly resonated or vibrated.
[0012]
Further, another means of the present invention for achieving the above-mentioned object is that
the coil supporting plate is in close contact with a housing of a device into which the vibrator is
incorporated, via a double-sided adhesive tape. The vibrating body is locked to the body by a
locking portion.
[0013]
Further, the locking portion is a hook portion integrally formed on the housing.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present
invention will be described in detail based on the drawings.
FIG. 1 is a cross-sectional view of a vibrator according to an embodiment of the present
invention, and FIG. 2 is a cross-sectional view showing the vibrator incorporated in an apparatus.
[0015]
First, the configuration of a vibrator according to an embodiment of the present invention will be
described.
In FIG. 1, 3 is a vibrator.
Reference numeral 11 denotes a frame which is a substantially cylindrical resin molded product,
13-05-2019
4
and a stepped portion 11a is formed on the inner periphery thereof.
Reference numeral 12 denotes a support spring A in which an annular outer peripheral portion
embedded in the frame 11 and an annular inner peripheral portion are connected by a plurality
of arc-shaped arm portions.
Reference numeral 13 denotes a support spring B in which an annular outer peripheral portion
and an annular inner peripheral portion similarly embedded in the frame 11 are connected by a
plurality of arc-shaped arm portions.
Reference numeral 14 denotes a yoke made of a pot-like magnetic body having an annular outer
peripheral portion 14a, and the outer peripheral portions of the support springs A12 and B13
are fixed.
[0016]
The outer peripheral portion 14a of the yoke 14 is thick, and this portion acts as an additional
mass to contribute to the strength of vibration. You may install the weight of another part in this
part. Reference numeral 15 denotes a disk-shaped magnet fixed on the yoke 14, and reference
numeral 16 denotes a top plate made of a magnetic material fixed on the magnet 15. Reference
numeral 17 denotes a magnetic circuit portion (movable portion) configured by the yoke 14, the
magnet 15, and the top plate 16. The magnetic circuit portion (movable portion) 17 is elastically
supported by the frame 11 by a support spring A12 and a support spring B13.
[0017]
A rigid coil support plate 18 made of a plastic material or a metal material is fitted and bonded to
the step 11a of the frame 11 at its outer peripheral portion. The upper end surface of the frame
11 and the upper surface of the coil support plate 18 are in the same plane. The coil support
plate 18 is not limited to a flat plate having a uniform thickness, but may be a rigid body that is
hardly deformed as a whole by providing beams in vertical and horizontal directions even if the
thickness is thin. A coil 19 is formed in a cylindrical shape by being wound around a coil winding
coil frame. One end surface of the coil 19 is fixed to the lower end of a projecting portion 18 a
formed on the support plate 18. It is located in the magnetic gap 17a which is a gap formed by
13-05-2019
5
the inner circumference.
[0018]
The present invention is not limited to the embodiment described above, and the coil 19 is joined
and fixed not to the lower end portion of the projection 18a but to the inner peripheral surface
or the outer peripheral surface of the projection 18a. You may Further, the ridges for joining the
coils are not limited to one continuous ridge, but may be a plurality of arc-shaped ridges
disposed on the same circle. Further, of the two elastic support springs, the support spring B13 is
not necessarily required and may be omitted.
[0019]
Next, a method of attaching the vibrating body 3 to a housing of a mobile communication device
or the like will be described with reference to FIG. In FIG. 2, 31 is a housing of a device in which
the vibration body 3 is incorporated, 31a is a hook portion which is a locking portion for locking
the vibration body 3 integrally formed on the housing 31, and 32 is a double-sided adhesive tape.
is there. As shown in FIG. 2, the upper surface (the outer surface of the vibrating body) of the coil
support plate 18 is bonded by the double-sided adhesive tape 32 so as to be in close contact with
the inner surface of the housing 31. At the same time, the vibrating body 3 is locked by the hook
portion 31a to prevent detachment. The hook portions 31a do not have to be provided on the
entire circumference, and may be provided partially at two or more places.
[0020]
The housing 31 and the vibrating body 3 may be joined by sticking a double-sided adhesive tape
to each of the housing 31 and the vibrating body 3 and sandwiching a cushion therebetween.
Further, although the locking portion is the hook portion 31a in the present embodiment, the
locking portion is not limited to the structure for directly locking the vibrating body 3 in this
manner, for example, the housing 31 and a circuit board or a belt The vibrating body 3 may be
sandwiched between and fixed to the member. In this case, the locking portion indirectly locks
the vibrating body 3. Screw fixation is also conceivable as another locking portion.
[0021]
13-05-2019
6
Next, the action of the vibrator 3 will be described. By inputting a drive signal for sound to the
coil 19 of the vibrating body 3, mutual interaction between the magnetomotive force generated
in the coil 19 and the magnetic force of the magnet 15 causes the coil 19 and the magnetic
circuit portion (movable portion) 17 to Although relative displacement occurs, the magnetic
circuit (movable portion) 17 vibrates because the magnetic circuit (movable portion) 17 is
elastically supported by the frame. The vibration is transmitted to the frame, and the case 31 of
the device to which the vibrating body 3 is attached resonates to make it possible for the human
body, for example, the fingertip of the hand, to which the vibration is touched.
[0022]
Next, the effects of the embodiment of the present invention will be described. Since the coil 19
is fixed to the coil support plate 18 which is a rigid body, the magnetomotive force can be
transmitted to the magnetic circuit portion (movable portion) 17 without loss, and can generate
sharp vibration even with a weak signal current. Therefore, if this vibrator is used, it is possible
to experience vibration with a fingertip of a hand or the like in a small device such as a game
machine or a telephone. When joining the coil 19 to the coil support plate 18, the projection 18a
serves as a reference of the joining position of the coil 19, and accurate alignment can be
performed. In addition, since the coil support plate 18 is fitted to the steps of the frame, no
positional displacement of the coil with respect to the frame or with respect to the magnetic gap
occurs. Since the magnetic circuit portion (movable portion) 17 is supported by the two elastic
support springs, the support spring A12 and the support spring B13, the movement
accompanying the vibration is more stable than in the case of one spring.
[0023]
As described above, according to the present invention, a deep pot-like yoke having an annular
outer peripheral portion, a disk-like magnet fixed on the yoke, and the magnet A magnetic circuit
unit is formed by a top plate fixed on the upper side, the magnetic circuit unit is elastically
supported in the frame by a support spring embedded in the frame, and the coil is fixed to a coil
support plate which is a rigid body fixed to the frame. The vibrator is configured to be located in
the magnetic gap formed by the outer periphery of the yoke and the outer periphery of the top
plate, so that if the coil support plate is closely attached to the housing of the device, By inputting
the drive signal for this purpose, the elastically supported magnetic circuit portion (movable
portion) vibrates efficiently, and a realistic sensation with a sense of reality can be obtained.
13-05-2019
7
[0024]
Since the vibrator is locked by the hook portion integrally formed on the device housing so that
the coil supporting plate is in close contact with the device housing via the double-sided adhesive
tape, the housing can be directly resonated or It vibrated, and it became a mounting structure
that can get a realistic sensation.
[0025]
Since the coil supporting plate is provided with the projecting ridge portion serving as a
reference for positioning at the coil bonding portion, the coil bonding can be prevented from
being generated by hitting the bonding of the coils.
[0026]
Brief description of the drawings
[0027]
1 is a cross-sectional view of a vibrator according to an embodiment of the present invention.
[0028]
2 is a cross-sectional view showing a state in which the vibrator according to the embodiment of
the present invention is incorporated in the housing of the device.
[0029]
3 is a cross-sectional view and a plan view of a conventional vibrator.
[0030]
4 is a cross-sectional view showing a state in which the conventional vibrator is incorporated into
the housing of the device.
[0031]
Explanation of sign
[0032]
11 frame 12 support spring A13 support spring B14 yoke 15 magnet 16 top plate 17 magnetic
13-05-2019
8
circuit portion (movable portion) 17a magnetic gap 18 coil support plate 19 coil
13-05-2019
9
1/--страниц
Пожаловаться на содержимое документа