JP2003061173A - Plate spring used for vibrator alarm and alarm using sound and vibration in common - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an alarm using sound and vibration in common that vibrates as a rigid body at an easily sensible vibration frequency although the alarm has a small-sized configuration. SOLUTION: In the sound-vibration common use alarm where an electroacoustic element is placed on a plate spring covering the lower opening of a cylindrical case and the ringer diaphragm of the element is covering the upper opening of the case, the plate spring 30 is formed to be an annular strip 32 surrounding a center hole 31 and spiral plate separation holes 33, 34, 35 laid out like three comma-shapes are formed to the annular-like strip 32. The natural vibration frequency can be decreased to a lower vibration frequency by punched parts formed by the three plate separation holes 33, 34, 35. Since an inner circumferential plate 36 is connected to an outer circumferential plate 37 via a plurality of spiral middle plates 38, the electroacoustic elements are separately suspended and supported, thereby increasing the support strength.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an acoustic / vibration combined alarm for selectively emitting a sound such as a buzzer sound and a low-frequency vibration, and more particularly to a mobile phone, a pager (registered trademark), etc. The present invention relates to a sound / vibration combined alarm suitable for being built into a portable electronic device and suitable for evoking an incoming call to the wearer by sound or vibration.

[0002]

2. Description of the Related Art A sound alarm using a buzzer and a vibration alarm using a vibration motor are usually constructed as individual devices for each sense, but sound emission and vibration are selectively generated. The sound / vibration combined alarm system is expected to be widely applied not only in the field of information communication related devices such as mobile phones but also in the field of daily necessities such as alarm clocks and welfare related devices such as hearing impaired people. . In its practical development,
Not only a combination of an acoustic alarm and a vibration alarm, but downsizing and cost reduction of the device under the condition that the sound pressure of the air vibration and the vibration amplitude of the solid vibrating material with no sound or silence can be sufficiently obtained. It has to be something that satisfies the requirements.

In order to satisfy such conditions to some extent, the sound / vibration combined alarm device shown in FIG. 16 has been developed. The small-sized acoustic / vibration combined type alarm device shown in FIG. 16 is a flat columnar buzzer body (electroacoustic element) on a disk-shaped leaf spring 3 fixed so as to cover one opening side of the cylindrical case 2. ) Is mounted and fixed, and the ringer diaphragm 8 whose electromagnetic coil 9 is fixed to the inner surface side is covered and fixed to the other opening side of the cylindrical case 2. That is,
This alarm is a disc-shaped plate spring made of stainless steel whose peripheral portion is sandwiched by a seal mating face between a resin lower lid 1 having a circular air pressure release hole 1a and a lower end of an annular resin case 2. 3, a cup-shaped pure iron lower yoke 4 fixed on the leaf spring 3, and a disk-shaped magnet 5 fixed on the bottom surface of the lower yoke 4.
And a disc-shaped pure iron upper yoke 6 fixed on the magnet 5, a resin upper lid 7 having a circular sound emitting hole 7a, and the upper end of the resin case 2, there is a surrounding portion on the seal cage type mating surface. A disk-shaped stainless steel ringer diaphragm 8 sandwiched between the ringer diaphragm 8 and the ringer diaphragm 8 is fixed to the back surface of the ringer diaphragm 8, and is located in the gap between the inner peripheral surface of the peripheral wall 4 a of the lower yoke 4 and the outer peripheral surface of the upper yoke 6. And an electromagnetic coil (solenoid) 9 that operates.

The electromagnetic coil 9 is formed on the peripheral wall 4a of the lower yoke 4.
Since it is placed in the magnetic field (magnetic path) between the upper yoke 6 and the upper yoke 6, when an alternating current of high frequency (2500 Hz to 3500 Hz) is applied to the pair of lead wires 9a of the electromagnetic coil 9 from the outside, the alternating electromagnetic Since the electromagnetic coil 9 vibrates with a slight amplitude in the axial direction in synchronization with the alternating cycle due to the generation of force, the ringer diaphragm 8 having a high natural frequency causes the natural frequency (several kHz).
Resonates at z). Then, the natural frequency f _{0 of the} ringer diaphragm 8 (the buzzer itself) and the resonance frequency f of the resonance chamber S
_{With v} (> f ₀ ), the Helmholtz resonance effect widens the frequency band and increases the sound pressure. On the other hand, the electromagnetic coil 9
A pair of lead wires 9a of low frequency (100 Hz to 200
When an alternating current of (Hz) is passed, the electromagnetic coil 9 vibrates with a slight amplitude in the axial direction in synchronization with the alternating period due to the generation of the alternating electromagnetic force, and as a reaction to it, the lower yoke 4, the magnet 5, and the upper yoke 6 Since the magnetic path forming body consisting of also vibrates slightly,
The leaf spring 3 having a low natural frequency is vibrated. Therefore, the leaf spring 3 resonates with a large amplitude having a low natural frequency, so that the entire case 2 vibrates with an amplitude of a low frequency that can be detected. The appearance of the sound / vibration combined alarm having such a structure is a small diameter flat cylinder having a diameter of about 15 mm and a height of about 5 mm.

[0005]

However, the sound / vibration combined alarm device described above has the following problems.

That is, a so-called annular leaf spring 3 made of stainless steel having a central hole 3a into which the bottom portion of the lower yoke 4 fits is used as a mounting back plate of the electroacoustic element, and vibration is enhanced by high elastic support. However, since the diameter of the leaf spring 3 is a small diameter of about 14 mm, the natural frequency of the leaf spring 3 in the direction of the central axis is as high as a small drum. Although a low frequency of about 100 Hz is suitable as the frequency of the rigid body vibration that can be well sensed by the human body,
With the above-mentioned alarm, the vibration itself is still difficult to detect due to the vibration frequency being too high and the vibration itself being accustomed to the vibration. here,
In order to make it easier to detect vibration, it is necessary to increase the vibration energy as well as to reduce the frequency, and it is important to increase the amplitude and weight of the mounted object. The natural frequency of flexural vibration can be lowered even with a small-diameter leaf spring 3 by increasing the lightening portion in the flat portion of the leaf spring 3. However, if the lightening portion is increased indiscriminately, the mounted object such as the lower yoke 4 can be reduced. The supporting strength for supporting is lowered, and the spring property is also impaired.

In view of the above problems, an object of the present invention is to provide an acoustic / vibration combined alarm which has a compact structure and which vibrates rigidly at a frequency that is easy to detect.

[0008]

In order to solve the above-mentioned problems, the first means of the present invention is, as a leaf spring used in a vibration type alarm, a substantially annular strip plate surrounding a central hole, and its substantially annular shape. The strip plate is characterized in that a plurality of substantially spiral plate material separation holes are formed.

When the leaf spring having such a shape is used, the natural frequency of the flexural vibration is 100 Hz even though the leaf spring has a small diameter due to the lightening portion formed by the plurality of plate separation holes.
It can be reduced to a low frequency. In addition, since a plurality of substantially spiral-shaped plate ground separation holes are formed, the remaining inner peripheral side plate part is connected to the outer peripheral side plate part through a plurality of substantially spiral medium side plate parts. Therefore, since the electroacoustic element can be distributed and supported through the plurality of substantially spiral-shaped inner side plate portions, the supporting strength can be increased.

Further, the inner peripheral side plate portion is easily extended in the central axis direction with respect to the outer peripheral side plate portion, and the amount of deflection (amplitude) can be optimized without deteriorating the spring property. Therefore, since a large amplitude can be obtained at a low frequency, it is possible to realize a vibration type alarm device which has a small size and is easy to detect vibration.

[0012] When the substantially spiral plate-like material separating hole is elongated and the wraparound angle becomes large, the spring constant becomes low and the amplitude becomes large. On the contrary, since the lightening portion becomes large, the supporting strength is lowered. Further, when the number of strips of the substantially spiral plate-like separation holes increases, if the strip width of the substantially annular strip is narrow, the plate-like separation holes become too crowded, and the length of the plate-like separation holes (circulation angle) Therefore, the deflection amplitude cannot be increased. Further, when the plate separation holes are one or two, the vibration direction is deviated from the central axis line, and the two-dimensional component is easily mixed in the flexing motion to easily cause an imbalance.

[0012] Therefore, it is preferable that the plurality of substantially spiral-shaped plate-like material separating holes consist of three and are formed in a three-sided pattern-shaped arrangement relationship. In the three-striped pattern, the orbital angle of each plate separation hole is less than one orbit (360 °). Desirably, 180 ° to 240 ° is suitable. The natural frequency can be lowered by increasing the orbiting angle. According to the leaf spring having the three-sided pattern-like plate separation holes, it is possible to maintain the supporting strength, optimize the spring constant, and unify the axial vibration directions, and it becomes easier to detect the rigid body vibration. .

Further, the third plate separation hole separates the plate part between the head of the first plate separation hole and the tail of the second plate separation hole in the substantially annular strip. In the peripheral side plate part, when the notch is formed at the hole edge of the central hole, the inner peripheral side plate part, which is too wide compared to other parts, is lightened without punching holes, so the supporting strength Contributes to the maintenance and optimization of the spring constant.

The leaf spring having such a shape is
The present invention is not limited to the vibration type alarm device, and is also suitable for use in the vibration type alarm device.

The electroacoustic element is placed and fixed on the leaf spring fixed by covering one opening side of the cylindrical case, and the ringer diaphragm having the electromagnetic coil of the electroacoustic element fixed is mounted on the other side of the case. In an acoustic / vibration combined alarm that is fixed by covering the opening side, an electroacoustic device on a leaf spring that vibrates with a large amplitude and a low frequency applies a large stress to the fixation of the electromagnetic coil and the ringer diaphragm in reaction. To do. Therefore, in the present invention, the electromagnetic coil and the ringer diaphragm are integrally formed of a resin layer connected to the electromagnetic coil through a resin flow hole formed in the ringer diaphragm. Compared to the case where the ringer diaphragm and the electromagnetic coil are fixed to each other with an adhesive, there is no peeling of the adhesive, the reliability can be improved, and the number of parts to be assembled can be reduced.

Further, according to the present invention, the case and the ringer diaphragm are fixed by pressing the ringer diaphragm with a peripheral portion of the lid plate which covers the ringer diaphragm with the resonance chamber open and the other opening side of the case. It is made by caulking and fixing to the surrounding area. The reason for providing the resonance chamber is to increase the sound pressure of the ringer diaphragm by the resonance effect, but by fixing the other opening side of the case to the peripheral part of the lid plate, the lid plate and the ringer diaphragm are fixed. Can be achieved at the same time. The reliability is improved as compared with the case where an adhesive is used.

Further, a peripheral portion of a leaf spring is sandwiched between an inner peripheral flange portion on one opening side of the case and an end surface on one opening side of a spacer fitted in the case. The leaf spring can be fixed by sandwiching the case and the spacer without using an adhesive.

Next, the second means of the present invention for solving the above-mentioned problems is to mount and fix an electroacoustic element on a leaf spring which is fixed by covering one opening side of a cylindrical case. A combined acoustic / vibration alarm in which a ringer diaphragm, to which an electromagnetic coil of an acoustic element is fixed, is covered and fixed to the other opening side of the case, wherein the electroacoustic element is a first element fixed on the leaf spring. A yoke, a magnet fixed to the bottom surface of the first yoke, and a second yoke fixed to the magnet, and the peripheral wall of the first yoke has a substantially annular shape. It is characterized in that the weight body is externally fitted.

A magnetic path forming body composed of a first yoke, a magnet and a second yoke is mounted on the leaf spring. In addition to this, a substantially annular weight body made of, for example, a heavy metal such as tungsten. Is increased, the vibration inertial force is increased, and the amount of deflection (amplitude) of the leaf spring can be increased. The electromagnetic coil is positioned in the gap between the inner peripheral surface of the peripheral wall of the first yoke and the outer peripheral surface of the second yoke. The outer peripheral surface of the peripheral wall of the first yoke faces the inner surface of the case. Since it is a portion, a substantially annular weight may be attached. Instead of increasing the thickness of the peripheral wall of the first yoke itself, a structure in which a substantially annular weight body having a large specific gravity is externally fitted can efficiently increase the amplitude of the leaf spring. Since the mass of the oscillator is large and a large amplitude can be obtained, it is easy to detect vibrations while maintaining a compact structure.
It is possible to realize a vibration type alarm device.

Here, the first yoke is fixed on the leaf spring, but since the leaf spring vibrates violently due to the bending deformation, when fixing the both with an adhesive, there is a problem such as peeling of the adhesive. There is a fear of. Therefore, in the present invention, the first yoke and the leaf spring are fixed by laser welding. The yoke is pure iron and the leaf spring is stainless steel (eg SUS30
Even in the case of 4), the fixing reliability is high.

Further, it is preferable to fix the peripheral wall portion of the first yoke and the substantially annular weight body by laser welding.
Even if the yoke is pure iron and the weight is tungsten, the fixing reliability is high.

When the amplitude of the leaf spring increases, it is necessary to secure an extra space in the case for the leaf spring to freely vibrate. Therefore, the inner peripheral flange portion in the present invention is not simply a plate spring on which it is mounted, but is formed as at least a two-step diameter-reduced flange portion. If the end portion of the case is a collar portion having at least two-step diameter reduction, the thickness of the extra space is twice or more the case plate thickness. Therefore, the margin for vibrating the leaf spring with a large amplitude increases. It also contributes to the robustness of the case itself.

Further, the present invention is characterized in that it is integrally provided with a board hole inserting leg piece in which an end portion on one opening side of the case is cut and raised. When mounting a board on a printed wiring board or the like, by inserting the board hole insertion leg piece into the mounting hole of the board and reflowing the solder, the alarm can be firmly fixed to the board and the vibration can be transmitted.

Further, in the present invention, a terminal block made of an insulating resin is attached to a part of the outer peripheral surface of the case, and is fixed by penetrating through the terminal block, and one end side is a leg for inserting a board hole. And a relay terminal pin having the other end as a entwined portion of the lead wire of the electromagnetic coil. By inserting one end of the relay terminal pin into the land hole of the board and by solder reflow, the alarm can be firmly fixed to the board, and it can be electrically connected to the board without using lead wires. Contributes to the improvement of sex.

Such a sound / vibration combined alarm is suitable for use in portable electronic devices such as mobile phones, pagers, alarm clocks, and wrist watches.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the appearance of a sound / vibration combined alarm according to an embodiment of the present invention, FIG. 2 is a partial cutaway view of the left half of the alarm, and FIG. 4 is an exploded perspective view showing a case, a terminal block and a relay terminal pin in the alarm device, FIG. 5 is a perspective view showing a leaf spring in the alarm device, and FIG. 6 is a plan view showing the leaf spring. FIG. 7 is a perspective view showing an annular weight body of the alarm device, and FIG. 8 is a perspective view showing a cup-shaped lower yoke of the alarm device.
11 is a perspective view showing a disk-shaped magnet in the alarm device, FIG. 10 is a perspective view showing a disk-shaped upper yoke in the alarm device, and FIG.
1 is a perspective view showing an annular spacer in the alarm device, FIG.
2 is a perspective view showing an electromagnetic coil in the alarm device, FIG.
14 is a perspective view showing a ringer diaphragm in the alarm device, FIG.
[Fig. 3] is a perspective view showing a cover plate in the alarm device.

As shown in FIG. 1, the appearance of the sound / vibration combined alarm device 10 of the present example is a small diameter flat cylinder (diameter about 15 mm, height about 5 mm) having a terminal block 80 on the side surface. . The structure of the alarm device 10 basically follows the structure of the alarm device shown in FIG. Schematically, the alarm device 10 includes a substantially cup-shaped pure iron lower plate spring 30 made of a stainless steel (SUS304) and fixed on the lower opening side of a substantially cylindrical case 20 made of iron. York 4
2, substantially disk-shaped magnet 43, substantially disk-shaped upper yoke 44 made of pure iron
A flat and substantially cylindrical electroacoustic element 40 made of, for example, is placed and fixed, and an electromagnetic coil (solenoid) 45 of the electroacoustic element 40 is fixed to the inner surface of stainless steel (SUS30
4) It has a flat structure in which a ringer vibrating plate 46, which is a substantially circular thin plate, is covered and fixed to the upper opening side of the case 20, and the upper opening is covered with a resin-made substantially disk-shaped upper lid 50.

As shown in FIG. 2, the lower end of the cylindrical case 20 is provided with a compressed air vent hole 20a for releasing the air oscillating pressure of the leaf spring 30, and the inner peripheral flange portion 21 having a two-step reduced diameter is formed by press molding. The substrate hole insertion leg pieces 22, 22 are cut and raised at circumferentially opposite positions of the innermost second step collar portion 21b following the first step collar portion 21a. . A part of the peripheral wall of the cylindrical case 20 has a rectangular cutout 23 for attaching the terminal block 80. The ringer diaphragm 46 is provided on the upper end side of the peripheral wall of the cylindrical case 20.
An inner circumferential step 24 for positioning is formed to receive the peripheral portion of the, and the upper end side is an upper end thinned portion 25.

The terminal block 80 has a pin mounting hole 8 into which two prismatic relay terminal pins 85 and 85 are axially press-fitted and mounted.
This is a resin-integrally molded product of a base body 81 including 2, 82 and an engaging portion 86 for mounting the base body 81 in the notch 23 of the cylindrical case 20. Engagement grooves 87, 87 are formed in the engagement portion 86 so as to be inserted and dropped from the upper portions of both side edges of the notch 23.

First stage collar portion 21a of case 20 and case 2
The peripheral portion of the leaf spring 30 is sandwiched between the lower end surface of the resin-made annular spacer 60 which is internally fitted to 0.
A part of the peripheral wall of the annular spacer 60 has a rectangular cutout 61 for mounting the terminal block 80, as shown in FIG.

A circular leaf spring 30 made of stainless steel (diameter 14 mm, thickness 0.10 to 0.12 mm) is a circular base 42a of the lower yoke 42, as shown in FIGS.
Is a substantially annular band plate 32 having a band width of about 3 mm that surrounds a central hole 31 having a diameter of about 8 mm, and the plate plate portion of the annular band plate 32 has three substantially spiral plate separation holes. Three
3, 34, 35 are perforated. The substantially spiral plate-shaped material separating holes 33, 34, and 35 are mutually arranged in a rotationally symmetric relationship of 120 ° with respect to the center, and are formed in a so-called three-sided pattern-shaped arrangement relationship. The third platen separation hole 35 is located inside the platen portion between the head portion (corresponding to the tongue portion) 33a of the first platen plate separation hole 33 and the tail portion 34b of the second platen plate separation hole 34. Although it is separated into a peripheral side plate portion 36 and an outer peripheral side plate portion 37,
A half-moon notch 36a is formed at the hole edge of the central hole 31 in the inner peripheral side plate portion 36. A portion sandwiched between two strip separation holes (33 and 34, 34 and 35, 35 and 33) is a middle side strip portion 38. All of the substantially spiral plate-like material separating holes 33, 34, and 35 have substantially the same hole shape, but the hole edges are bordered by a spiral curve and a straight line.
The plate portion between the head portion 33a of the first plate material separating hole 33 and the tail portion 34b of the second plate material separating hole 34 is an inner peripheral side plate material portion 36.
And a third platen separation hole 35 for separating the outer platen 37
Has a straight line portion L, and a fold X is formed at a portion connected to the other spiral hole edge.

The leaf spring 30 and the lower yoke 42 thereon are fixed by laser welding. The peripheral wall 42 of the lower yoke 42
An annular weight body 41 made of tungsten is externally fitted to b,
It is fixed by laser welding. Further, a disc-shaped magnet 43 is fixed to the bottom surface 42c of the lower yoke 42 by adhesion or the like. Further, an upper yoke 44 is provided on the disc-shaped magnet 43.
Are fixed by adhesion or the like.

The ringer diaphragm 46 is also circular (diameter 14 mm,
As shown in FIG. 13, a plurality of arc-shaped lightening holes 46b are formed so as to circulate in a discrete manner, and the inner portions thereof substantially vibrate. It has become an area. The ringer diaphragm 46 has a circular through hole 46a. Further, the ringer diaphragm 46 is a protruding piece 46c that engages with the notch 23 of the case 20.
have. An electromagnetic coil 45 located in a gap between the inner peripheral surface of the peripheral wall 42b of the lower yoke 42 and the outer peripheral surface of the upper yoke 44 is fixed to the back surface of the ringer diaphragm 46 by adhesion or the like. The two lead wires 45a of the electromagnetic coil 45 are brought out to the resonance chamber S via the through holes 46a of the ringer diaphragm 46, and are made to crawl on the ringer diaphragm 46 in the radial direction, and the through holes 5 of the lid plate 50 are formed.
It is entwined with the upper end side 85a of the relay terminal pin 85 via 0a. In addition, you may inject an adhesive agent etc. into the through-hole 46a which the lead-out wire 45a penetrated, and may seal it.

As another fixing method for the electromagnetic coil 45 and the ringer diaphragm 46, as shown in FIG. 15, the electromagnetic coil 45 is formed by insert molding through resin flow holes 46d, 46d formed in the ringer diaphragm 46. Around the resin coating layer 4
An integrally molded product covered with 8 can be used. On the front surface side of the ringer diaphragm 46, the electromagnetic coil 45 is prevented from coming off by a cross-linking resin portion 48a extending over the resin circulation holes 46d, 46d. The resin flow holes 46d, 46d can be used as through holes for passing the lead wire 45a. Further, at the time of insert molding, the portion of the lead wire 45a that crawls in the radial direction of the surface of the ringer diaphragm 46 may be extended and covered with the resin of the crosslinked resin portion 48a.

The resin disk-shaped cover plate 50 has a circular sound output hole 50b in the center, and the ringer diaphragm 46 and the cover plate 50 are provided.
A resonance chamber S is provided between and. Through hole 50 of cover plate 50
a is an overhanging portion 50 that engages with the notch 23 of the case 20.
It is opened in the space between c and 50c. And case 2
0 and the ringer vibrating plate 46 are fixed by pressing the ringer vibrating plate 46 on the inner peripheral step 24 at the peripheral portion of the upper lid 50 and crimping the upper end thin portion 25 to the inner peripheral side.

In the sound / vibration combined alarm device 10 of this example, as shown in FIG. 2, the board hole inserting leg piece 22 and the lower end 85b of the relay terminal pin 85 are inserted into the land hole of the board 90.
It is fixed with solder 91 by solder reflow. Therefore, the alarm device 10 can be firmly fixed to the substrate 90, and the rigid body vibration can be reliably transmitted. Since the alarm device 10 includes the relay terminal pin 85, it can be electrically connected to the substrate 90 without using a lead wire. Contributes to the ease of board mounting.

In the sound / vibration combined alarm device 10 having such a configuration, the electromagnetic coil 45 is located in the magnetic field (magnetic path) in the gap between the peripheral wall 42b of the lower yoke 42 and the upper yoke 44. When a high-frequency alternating current is passed from the alarm driving circuit on the substrate 90 to the electromagnetic coil 45 via the relay terminal pin 85 and the lead wire 45a, the electromagnetic coil 45 itself is synchronized with the alternating cycle due to the generation of the alternating electromagnetic force. Vibrates with a slight amplitude in the central axis direction, and thus the ringer diaphragm 46 resonates at its natural frequency (2800 to 3000 Hz). The natural frequency f ₀ of the ringer diaphragm 46 and the resonance frequency f _v (> f ₀ ) of the resonance chamber S expand the frequency band by the Helmholtz resonance effect, and the sound pressure is increased. It can be used for ringing tones such as mobile phones and pagers.

On the other hand, when a low-frequency alternating current is supplied to the electromagnetic coil 45 through the lead wire 45a, the electromagnetic coil 45 itself vibrates with a slight amplitude in the central axis direction in synchronization with the alternating cycle due to the generation of the alternating electromagnetic force. Therefore, as a recoil, the magnetic path forming body side including the lower yoke 42, the magnet 43, and the upper yoke 44 also vibrates slightly. As a result, the leaf spring 30 has a low frequency (11
The case 20 as a whole vibrates with a perceptible amplitude.

Here, since the lightening portion is formed by the three strip material separating holes 33, 34, 35 in the substantially annular strip 32 of the leaf spring 30, the inner peripheral side sheet material portion 36 is The natural frequency of the flexural vibration (direction of the central axis O) is set to a low frequency of about 110 Hz. Also, the plate separation holes 33, 34,
Since 35 is formed in a substantially spiral shape, the lower yoke 42
The inner peripheral side platen portion 36 as a movable part to which is fixed is connected to the outer peripheral side platen portion 37 as a fixed part through three substantially spiral-shaped middle side platen portions 38. For this reason, since the electroacoustic elements 40 can be distributed and supported in a suspended state through the three substantially spiral-shaped inner side plate portions 38, the supporting strength can be increased. Further, the tail portions 33 of the plate separation holes 33, 34, 35
Since the twisting action of the substantially spiral middle-side plate material portion 38 itself is superposed on the inner peripheral-side connecting portion N with the outer peripheral-side connecting portion M on the b, 34b, 35b side as the base end, the inner peripheral-side plate material portion 36 has the outer periphery. The side plate base portion 37 is easily extended to the central axis O. Not only the bending deformation of the middle side fabric portion 38 but also the torsional spring property is utilized, so that the spring constant is not significantly reduced,
A suitable amount of deflection (amplitude) can be obtained. Therefore, since a large amplitude can be obtained at a low frequency, it is possible to realize the sound / vibration combined use alarm device 10 that has a small configuration and causes vibration that is easy to detect.

Three strip-shaped substantially spiral-shaped plate separation holes 33, 3
4, 35 are formed in a three-storied pattern arrangement relationship. In the three-sided pattern, the orbiting angle of each of the plate separation holes 33, 34, and 35 is about half an orbit (190 °). Orbiting angle is 24
When it becomes 0 ° or more, the strip width of the substantially annular strip 32 is divided by the maximum three strip separation holes 33, 34, 35, so that the remaining strip portions of the four streaks are lost narrowly, The supporting strength deteriorates.
A leaf spring formed from two substantially spiral strip material separation holes in a two-storied pattern arrangement is also conceivable, but the vibration direction is likely to deviate from the axial line and two-dimensional vibration is likely to occur. A leaf spring using four or more strip separation holes is also conceivable, but if the length of the middle side strip portion is secured and the torsion spring property is used,
Since the portion where the number of divisions of the band width of the annular belt plate 32 is 4 or more comes out, the supporting strength is deteriorated. Therefore, according to the leaf spring 30 having the three-sided pattern-like plate separation holes, it is possible to maintain the supporting strength, optimize the spring constant, and unify the axial vibration direction, and further increase the easiness of rigid body vibration. Become.

The regions of the outer peripheral side connecting portion M and the inner peripheral side connecting portion N need to have a relatively large area in order to increase the connecting strength as a supporting end of the cantilever. Further, when the middle side plate portion 38 is connected to the outer peripheral side connecting portion M and the inner peripheral side connecting portion N by the spiral curve portion shown by the two-dot chain line in FIG. 5, stress higher than proof stress acts on the connecting portion. Therefore, plastic deformation or fracture is likely to occur beyond the yield point. Therefore, in this example, such a spiral curve portion is formed as the straight line portion L so that it is difficult to be twisted and the connection strength is increased.

Since the inner peripheral side connecting portion N is too wide as compared with the other portions, it is slightly difficult to bend in the circumferential direction of the inner peripheral side base material portion 36, and the twisting deformation easily spreads to the hole edge side. However, in this example, not the hole is formed, but the notch 36a is formed at the hole edge of the central hole 31, so that it is difficult to spread the twisting toward the hole edge side while securing the supporting strength. The bending of the circumferential side plate portion 36 along the circumference is equalized.

The outer peripheral side portion of the plate material separating holes 33, 34, 35 facing the outer peripheral plate material portion 37 is a narrow partial circumferential hole, whereas the outer peripheral surface portion thereof faces the inner peripheral material plate portion 36. The inner peripheral side portion is a wide spiral hole, and the plate separation hole 33,
The stress at the hole edge portions of the head portions 33a, 34a, 35a of the reference numerals 34, 35 is reduced.

In the alarm device 10 having the leaf spring 30 having such a large amplitude, the electromagnetic coil 4 is placed on the ringer plate 46.
Since 5 is fixed, a large stress is applied to the fixed portion between the electromagnetic coil 45 and the ringer diaphragm 46. When the fixed portion is an adhesive, defects such as peeling easily occur due to fatigue due to repeated stress. However, in this example, FIG.
As shown in FIG. 5, since the electromagnetic coil 45 and the ringer diaphragm 46 are integrally molded by the resin coating layer 48 and the crosslinked resin portion 48a that cover the periphery of the electromagnetic coil 45 through the resin circulation hole 46d, they are bonded together. The reliability can be improved and the number of parts to be assembled can be reduced as compared with the case of fixing with an agent.

Further, the fixing structure of the case 20 and the ringer diaphragm 46 is such that the ringer diaphragm 46 is attached to the upper end of the spacer 60 around the lid plate 50 which covers the ringer diaphragm 46 with the resonance chamber S open. The upper end thin portion 25 of the case 20 is pressed and fixed by caulking. The reason why the resonance chamber S is provided is to increase the sound pressure by the resonance effect. Also, the case 20
By fixing the upper opening side of the above to the peripheral portion of the upper lid 50, the upper lid 50 and the ringer diaphragm 46 can be fixed at the same time. The reliability is improved as compared with the case where an adhesive is used.

Further, the peripheral portion of the leaf spring 30 is sandwiched between the first-stage collar portion 21a of the case 20 and the surface of the spacer 60 fitted in the case 20. The leaf spring 30 is fixed to the case 20 and the spacer 60 without using an adhesive.
It can be realized by sandwiching with.

The electroacoustic element 40 of this example includes a lower yoke 42 fixed on the leaf spring 30, a magnet 43 fixed on the bottom surface 42c thereof, and an upper yoke 44 fixed on the magnet 43. The lower yoke 42 and the peripheral wall portion 42 of the lower yoke 42.
b is made of a heavy metal such as tungsten or the like and has a substantially annular weight body 41.
Is fitted. Therefore, the vibration inertia is increased, and the amount of deflection (amplitude) of the leaf spring 30 can be increased.

Here, since the leaf spring 30 vibrates violently due to the bending deformation, when the lower yoke 42 and the leaf spring 30 are fixed with an adhesive, there is a risk of problems such as peeling of the adhesive.
In this example, the lower yoke 42 and the leaf spring 30 are fixed by laser welding. Therefore, even when the lower yoke 42 is pure iron and the leaf spring 30 is stainless steel, the fixing reliability is high and problems such as peeling can be eliminated. Also, the lower yoke 4
The second peripheral wall portion 42b and the weight body 41 are also fixed to each other by laser welding. Even if the lower yoke 42 is made of pure iron and the weight body 41 is made of tungsten, the fixing reliability is high and problems such as peeling can be eliminated.

As described above, since the amplitude of the leaf spring 30 of this example is larger than that of the conventional one, the leaf spring 30
It is necessary to secure an extra space in the case 20 so that the can freely vibrate. Therefore, the inner peripheral flange portion 21 is formed as a two-stage diameter-reduced flange portion. The edge of the case 20 is 2
When the collar portion has a step-reduced diameter, as shown in FIG. 2, the thickness of the extra space is twice or more the case plate thickness. Therefore, the margin for vibrating the leaf spring 30 with a large amplitude increases. Furthermore,
The strength of the case 20 can be increased.

In the above embodiment, the flat cylindrical case is used, but it is also possible to use a square tube case or an elliptical case.

The leaf spring 30 described in this example can be used not only in the sound / vibration combined alarm 10 but also in the vibration alarm. As the vibration type alarm, for example, the electromagnetic coil 45 is not fixed to the ringer diaphragm 46, the ringer diaphragm 46 is eliminated, and the electromagnetic coil 45 is fixed to a fixed portion such as the lid plate 50 or the case 20. Good. Further, the ringer diaphragm 46 has a low natural frequency as in the case of the leaf spring 30 instead of generating sound waves, so that a vibration type alarm that selectively vibrates at different natural frequencies can be configured. Of course, by using the leaf spring 30 as a ringer diaphragm having a high natural frequency,
An acoustic alarm that selectively emits sounds with different tones can also be configured.

The sound / vibration combined alarm device 10 or the vibration alarm device as described above has a diameter of 10 mm and a thickness of 4 mm.
Since it can be made small in diameter and thin, it can be incorporated not only in mobile phones and pagers but also in daily necessities such as alarm clocks and watches, and is suitable for use in various portable electronic devices. When the vibration amplitude needs to be about 1 mm, by thinning the magnetic path forming body mounted on the leaf spring 30, it is possible to achieve an ultra-thin thickness of about 3 mm.

[0054]

As described above, according to the first means of the present invention, the leaf spring used in the sound / vibration combined alarm is a substantially annular strip plate surrounding the central hole. The plate is characterized by being formed with a plurality of substantially spiral-shaped plate separation holes. Therefore, the following effects are obtained.

That is, the natural frequency can be lowered to a low frequency by the lightening portion by the plurality of strip separation holes. In addition, the remaining inner peripheral side strip portion is connected to the outer peripheral side strip portion through a plurality of substantially spiral middle side strip portions,
Since the electroacoustic element can be distributed and supported, the supporting strength can be increased. Further, the optimization of the amplitude value can be realized without deteriorating the spring property. Therefore, since a large amplitude can be obtained at a low frequency, it is possible to realize a sound / vibration combined use type alarm device that is small in size and is easy to detect vibration.

(2) When the plurality of substantially spiral spiral ground material separating holes consist of three, and are formed in a three-sided pattern arrangement relationship, the support strength is maintained, the spring constant is optimized, and the axial vibration is generated. Since the directions can be made uniform, it becomes easier to detect the rigid body vibration.

(3) The third plate separation hole separates the ground plate portion between the head of the first plate separation hole and the tail of the second plate separation hole of the substantially annular strip. In the peripheral side plate part, when the notch is formed at the hole edge of the central hole, the inner peripheral side plate part, which is too wide compared to other parts, is lightened without forming a hole, so the supporting strength Contributes to the maintenance and optimization of the spring constant.

(4) An electroacoustic element is placed and fixed on the leaf spring fixed by covering one opening side of the cylindrical case, and the ringer diaphragm having the electromagnetic coil of the electroacoustic element fixed is fixed to the case. On the other hand, in an acoustic / vibration combined alarm that is fixed by covering it on the opening side, the coil and the ringer diaphragm are integrally molded with a resin layer connected to the electromagnetic coil through the resin flow hole formed in the ringer diaphragm. When it is made, the reliability can be improved compared to the case where it is fixed with an adhesive.
Also, the number of parts to be assembled can be reduced.

(5) The case and the ringer vibrating plate press the ringer vibrating plate at the peripheral portion of the lid plate which covers the ringer vibrating plate with the resonance chamber open, and crimps the other opening side of the case to the peripheral portion. In the case where they are fixed together, the sound pressure can be increased by the resonance effect, and the fixing of the lid plate and the fixing of the ringer diaphragm can be achieved at the same time. The reliability is improved as compared with the case where an adhesive is used.

(6) In the case where the peripheral portion of the leaf spring is sandwiched between the inner peripheral flange portion on the one opening side of the case and the one opening side end surface of the substantially annular spacer fitted in the case, The leaf spring can be fixed by sandwiching the case and the spacer without using an adhesive.

(7) In the second means of the present invention,
A magnetic path forming body including a first yoke, a magnet and a second yoke is mounted on the leaf spring. In addition to this,
A substantially annular weight body is externally fitted to the peripheral wall portion of the first yoke. For example, since a substantially annular weight body made of a heavy metal such as tungsten is weighted, the vibration inertia is increased, and the amount of deflection (amplitude) of the leaf spring can be increased. It is possible to realize an acoustic / vibration combined alarm that is easy to detect vibration despite its compact structure.

(8) Here, when the first yoke and the plate spring are fixed by laser welding, for example, even when the yoke is pure iron and the plate spring is stainless, the fixing reliability is high and the peeling is high. It is possible to solve such problems.

(9) When the peripheral wall of the first yoke and the substantially annular weight are fixed by laser welding, for example, even when the yoke is pure iron and the weight is tungsten, the fixing reliability is high. Is high, and problems such as peeling can be solved.

(10) When the inner peripheral flange portion is formed as at least a two-step diameter-reduced flange portion, the case plate thickness is 2
More than double the thickness of the extra space. Therefore, the margin for vibrating the leaf spring with a large amplitude increases. It also contributes to the robustness of the case itself.

(11) Further, the present invention is characterized in that it is integrally provided with a board hole inserting leg piece in which an end portion on one opening side of the case is cut and raised. When mounting a board on a printed wiring board or the like, by inserting the board hole inserting leg piece into the mounting hole of the board and reflowing the solder, the alarm can be firmly fixed to the board, and the vibration can be reliably transmitted. Contributes to the ease of board mounting.

(12) Further, in the present invention, a terminal block made of an insulating resin is attached to a part of the outer peripheral surface of the case, and the terminal block is penetrated and fixed to the terminal block, and one end side is a substrate hole And a relay terminal pin having the other end as a entwined portion of the lead wire of the electromagnetic coil. The one end of the relay terminal pin is inserted into the land hole of the board, and the alarm can be firmly fixed to the board by solder reflow, and it can be electrically connected to the board without using lead wires. Contributes to ease of assembly and improvement of assembly.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external appearance of a sound / vibration combined alarm according to an embodiment of the present invention.

FIG. 2 is a partially cutaway view of a left half of the alarm device.

FIG. 3 is an exploded perspective view of the alarm device.

FIG. 4 is an exploded perspective view showing a case, a terminal block, and a relay terminal pin in the alarm device.

FIG. 5 is a perspective view showing a leaf spring in the alarm device.

FIG. 6 is a plan view showing the leaf spring.

FIG. 7 is a perspective view showing an annular weight body in the alarm device.

FIG. 8 is a perspective view showing a cup-shaped lower yoke in the alarm device.

FIG. 9 is a perspective view showing a disk-shaped magnet in the alarm device.

FIG. 10 is a perspective view showing a disk-shaped upper yoke in the alarm device.

FIG. 11 is a perspective view showing an annular spacer in the alarm device.

FIG. 12 is a perspective view showing an electromagnetic coil in the alarm device.

FIG. 13 is a perspective view showing a ringer diaphragm in the alarm device.

FIG. 14 is a perspective view showing an upper lid of the alarm device.

FIG. 15 is a partial cross-sectional view for explaining another fixing method of the electromagnetic coil and the ringer diaphragm in the alarm device.

FIG. 16 is a partial cutaway view of the left half of the conventional sound / vibration combined alarm.

[Explanation of symbols]

10 ... Sound and vibration combined alarm 20 ... Cylindrical case 20a ... compressed air vent hole 21 ... Inner circumference collar part 21a ... 1st stage collar part 22a ... 2nd collar part 22 ... Leg for inserting board hole 23 ... Notch 24 ... Inner circumference step 30 ... Leaf spring 31 ... Central hole 32 ... annular strip 33, 34, 35 ... Substantially spiral plate separation holes 33a, 34a, 35a ... Head 33b, 34b, 35b ... Tail 36 ... Inner peripheral plate portion 36a ... Half moon notch 37 ... Outer side plate ground 38 ... Middle plate ground L ... Straight line part X ... fold M ... Outer peripheral side connecting part N ... Inner peripheral side connecting part 40 ... Electroacoustic element 41 ... Annular weight 42 ... Lower yoke 42a ... Circular base 42b ... peripheral wall 42c ... bottom surface 43 ... Disc magnet 44 ... Upper yoke 45 ... Electromagnetic coil (solenoid) 45a ... Leader wire 46 ... Ringer diaphragm 46a ... through hole 46b ... Arc-shaped lightening hole 46c ... Overhanging piece 46d ... Resin flow hole 48 ... Resin coating layer 48a ... Crosslinked resin part S ... Resonance room 50 ... Lid plate 50a ... through hole 50b ... Sound output hole 60 ... Annular spacer 61 ... Notch 80 ... Terminal block 81 ... Stand body 82 ... Pin mounting hole 85 ... Relay terminal pin 85a ... the upper end side 85b ... Lower end side 86 ... Engagement part 87 ... engagement groove 90 ... Substrate 91 ... Solder

[Procedure amendment]

[Submission date] July 10, 2002 (2002.7.1)
0)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Title of invention

[Correction method] Change

[Correction content]

[Title of the invention] Leaf spring and sound / vibration combined alarm used for vibration alarm

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

3. A ringer diaphragm having an electroacoustic element mounted on and fixed to a leaf spring fixed by covering one opening side of a cylindrical case, and a ringer diaphragm having an electromagnetic coil of the electroacoustic element fixed thereto. A combined sound / vibration type alarm device covering and fixing the opening side, wherein the leaf spring is a leaf spring defined in claim 1 or claim 2. Sound and vibration combined alarm.

4. The method of claim 3, wherein the electro-acoustic device includes a first yoke which is fixed on the plate spring, and the first magnet fixed to the bottom surface of the yoke, on the magnet An acoustic / vibration combined alarm device having a fixed second yoke, wherein a substantially annular weight is externally fitted to the peripheral wall portion of the first yoke.

5. The method of claim 4, either or both of the fixed and the leaf spring and the fixed and the first yoke, and the substantially annular weight body peripheral wall portion of the first yoke laser welding An acoustic / vibration combined alarm device characterized by being fixed in place.

6. A any one of claims 3 to 5, wherein the fixing of the electromagnetic coil and the ringer diaphragm in the electromagnetic coil through the resin flow holes formed in the ringer diaphragm An acoustic / vibration combined alarm that is integrally formed of connected resin layers.

7. The method of claim 3 or any of claims 6, fixed with the ringer vibration plate and the case, the peripheral portion of the cover plate covered at a resonance chamber on the ringer diaphragm 2. The sound / vibration combined alarm device, characterized in that the ringer diaphragm is pressed by and the other opening side of the case is caulked and fixed to the peripheral portion.

8. The method according to any one of claims 3 to 7 , wherein an inner peripheral flange portion on the one opening side of the case and an end surface on one opening side of a spacer fitted in the case are provided.
An acoustic / vibration combined alarm device, characterized in that an outer peripheral side portion of the leaf spring is sandwiched.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

In the above-mentioned structure, the present invention is to separate each plate material.
The inner side of the hole is wide and the outside of each plate separation hole
The peripheral part is a narrow hole. For this reason, the plate separation
The stress at the hole edge of the hole head is reduced. Also, each
Since the middle of the plate separation hole is formed as a straight part,
It is difficult to twist and the connection strength increases.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Delete

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Delete

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Delete

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Delete

[Procedure Amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Delete

[Procedure Amendment 9]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Delete

[Procedure Amendment 10]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Delete

[Procedure Amendment 11]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Delete

[Procedure Amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0054

[Correction method] Change

[Correction content]

[0054]

[Effect of the Invention] (1) As described above, the present invention
Oite is a substantially annular strip of leaf spring used in the vibration combination type annunciator surrounding the central hole, Ru formed by drilled is substantially spiral-shaped plate ground segregation holes of plural rows in the substantially annular strip . Abbreviation for multiple articles
The spiral plate separation hole consists of three strips and has a three-sided pattern.
It is formed in a positional relationship, and the inner peripheral side part of each plate separation hole is
It is a wide hole, and the outer peripheral part of each plate separation hole is narrow.
It is a hole. Therefore, the head edge of the plate separation hole has a
The power is reduced.

[Procedure Amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0055

[Correction method] Change

[Correction content]

(2) Further , the middle of each plate separation hole is a straight line.
Since it is formed as a part, it is difficult to twist and the connection strength is
Increase.

[Procedure Amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0056

[Correction method] Delete

[Procedure Amendment 15]

[Document name to be amended] Statement

[Name of item to be corrected] 0057

[Correction method] Delete

[Procedure Amendment 16]

[Document name to be amended] Statement

[Name of item to be corrected] 0058

[Correction method] Delete

[Procedure Amendment 17]

[Document name to be amended] Statement

[Correction target item name] 0059

[Correction method] Delete

[Procedure 18]

[Document name to be amended] Statement

[Correction target item name] 0060

[Correction method] Delete

[Procedure Amendment 19]

[Document name to be amended] Statement

[Correction target item name] 0061

[Correction method] Delete

[Procedure amendment 20]

[Document name to be amended] Statement

[Correction target item name] 0062

[Correction method] Delete

[Procedure correction 21]

[Document name to be amended] Statement

[Correction target item name] 0063

[Correction method] Delete

[Procedure correction 22]

[Document name to be amended] Statement

[Correction target item name] 0064

[Correction method] Delete

[Procedure amendment 23]

[Document name to be amended] Statement

[Correction target item name] 0065

[Correction method] Delete

[Procedure correction 24]

[Document name to be amended] Statement

[Correction target item name] 0066

[Correction method] Delete

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazuto Narusawa             1771 Nakamaruko, Maruko-cho, Ogo-gun, Nagano Sanyo             Precision Co., Ltd. F-term (reference) 5D017 AA11

Claims (18)

[Claims] 1. A vibration type alarm which is a substantially annular strip surrounding a central hole, wherein a plurality of substantially spiral strip separation holes are formed in the substantially annular strip. Leaf spring. 2. The vibration type alarm device according to claim 1, wherein the plurality of substantially spiral plate-like material separation holes are composed of three, and are formed in a three-sided pattern-shaped arrangement relationship. Leaf spring. 3. The plate portion between the head of the first plate separation hole and the tail of the second plate separation hole of the substantially annular strip plate is defined as a third plate in claim 2. A leaf spring used in a vibration type alarm device, characterized in that a ground separation hole is formed in a separated inner peripheral side plate ground portion, and a cutout portion is formed at a hole edge of the central hole. 4. A ringer diaphragm having an electroacoustic element mounted and fixed on a leaf spring fixed by covering one opening side of a cylindrical case, and a ringer diaphragm having an electromagnetic coil of the electroacoustic element fixed thereto. A combined sound / vibration type alarm device covering and fixing the opening side, wherein the leaf spring is a leaf spring defined in any one of claims 1 to 3. Sound and vibration combined alarm. 5. The electroacoustic element according to claim 4, wherein the electroacoustic element includes a first yoke fixed on the leaf spring, a magnet fixed on a bottom surface of the first yoke, and a magnet fixed on the magnet. An acoustic / vibration combined alarm device having a fixed second yoke, wherein a substantially annular weight is externally fitted to the peripheral wall portion of the first yoke. 6. The method according to claim 5, wherein one or both of fixing of the leaf spring and the first yoke and fixing of a peripheral wall portion of the first yoke and the substantially annular weight body are laser welded. An acoustic / vibration combined alarm device characterized by being fixed in place. 7. The electromagnetic coil according to any one of claims 4 to 6, wherein the electromagnetic coil and the ringer diaphragm are fixed to the electromagnetic coil through a resin flow hole formed in the ringer diaphragm. An acoustic / vibration combined alarm that is integrally formed of connected resin layers. 8. The fixing of the case and the ringer diaphragm according to any one of claims 4 to 7, wherein a peripheral portion of a lid plate which covers the ringer diaphragm with a resonance chamber open. 2. The sound / vibration combined alarm device, characterized in that the ringer diaphragm is pressed by and the other opening side of the case is caulked and fixed to the peripheral portion. 9. The method according to claim 4, wherein an inner peripheral flange portion of the case on the one opening side and an end surface of the spacer fitted in the case on the one opening side are provided. An acoustic / vibration combined alarm device, characterized in that an outer peripheral side portion of the leaf spring is sandwiched. 10. A ringer diaphragm having an electroacoustic element mounted and fixed on a plate spring fixed by covering one opening side of a tubular case, and a ringer diaphragm having an electromagnetic coil of the electroacoustic element fixed thereto, the other side of the case. A combined acoustic / vibration type alarm that covers and fixes the opening side, wherein the electroacoustic element is a first member fixed on the leaf spring.
A yoke, a magnet fixed to the bottom surface of the first yoke, and a second yoke fixed to the magnet, and the peripheral wall portion of the first yoke has a substantially annular shape. An acoustic / vibration combined alarm that is characterized in that the weight is externally fitted. 11. The laser welding according to claim 10, wherein one or both of fixing of the leaf spring and the first yoke and fixing of a peripheral wall portion of the first yoke and the substantially annular weight body are performed. An acoustic / vibration combined alarm device characterized by being fixed in place. 12. The fixing of the electromagnetic coil and the ringer diaphragm according to claim 11, wherein the resin layer is integrally formed with a resin layer connected to the electromagnetic coil through a resin flow hole formed in the ringer diaphragm. Sound / vibration combined type alarm device characterized by being made. 13. The fixing of the case and the ringer diaphragm according to any one of claims 10 to 12, wherein a peripheral portion of a lid plate which covers the ringer diaphragm with a resonance chamber open. 2. The sound / vibration combined alarm device, characterized in that the ringer diaphragm is pressed by and the other opening side of the case is caulked and fixed to the peripheral portion. 14. The method according to claim 10, wherein an inner peripheral flange portion of the case on the one opening side and an end surface of the spacer fitted in the case on the one opening side. A sound / vibration combined alarm device characterized in that an outer peripheral side portion of the leaf spring is sandwiched. 15. The sound / vibration combined alarm according to claim 14, wherein the inner peripheral collar portion is a collar portion having at least two-stage diameter reduction. 16. The method according to claim 4, wherein an end portion of the case on the one opening side is integrally provided with a cut-and-raised board hole inserting leg piece. Sound and vibration combined type alarm device. 17. The terminal block made of an insulating resin, which is attached to a part of an outer peripheral surface of the case, and is fixed to the terminal block by penetrating therethrough according to any one of claims 4 to 17. And a relay terminal pin having one end side as a leg for inserting a board hole and the other end side as a entwined portion of a lead wire of the electromagnetic coil. 18. A portable electronic device comprising the sound / vibration combined alarm device according to claim 4. Description: