WO2004108306A1 - 振動発生装置及び電子機器 - Google Patents
振動発生装置及び電子機器 Download PDFInfo
- Publication number
- WO2004108306A1 WO2004108306A1 PCT/JP2004/008067 JP2004008067W WO2004108306A1 WO 2004108306 A1 WO2004108306 A1 WO 2004108306A1 JP 2004008067 W JP2004008067 W JP 2004008067W WO 2004108306 A1 WO2004108306 A1 WO 2004108306A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnet
- bottom plate
- vibration
- vibration generator
- flat coil
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
- B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
- B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
- H02K5/1677—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
- H02K7/061—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses
- H02K7/063—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses integrally combined with motor parts, e.g. motors with eccentric rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
- H02K7/065—Electromechanical oscillators; Vibrating magnetic drives
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/09—Structural association with bearings with magnetic bearings
Definitions
- the present invention relates to a vibration generating device that generates vibration by rotating a rotor and an electronic device using the vibration generating device.
- a portable telephone can notify a user of an incoming call by generating vibration in a so-called mana mode. It has a structure that can be used.
- a portable telephone has a built-in vibration generator as a vibration factor that generates vibration.
- this type of vibration generator there is a small vibration motor having an eccentric weight for vibration generation as described in Japanese Patent No. 3187029.
- the conventional vibration generator as described above has the following problems. That is, if such a motor with a brush is used, non-rotational failure due to a so-called slit short cannot be reduced to zero, so that there is a problem in the reliability of the vibration generating operation.
- the motor body can be made as small as, for example, about 3.5 mm in diameter, there is a problem that the number of revolutions and power consumption are too high. It is clear that lower power consumption is better from the viewpoint of extending the life of batteries used in portable electronic devices such as portable telephones.
- Such vibration generator Due to the demand for downsizing and thinning of electronic devices on which devices are to be mounted, it is desired to reduce the size and simplification of the vibration generator and the electronic device having the same.
- a flat (coin-type) vibration generator is considered as a small vibration generator.
- the weight will be reduced, and the magnetic force of the magnet will increase the friction due to the attraction force toward the bottom plate.
- the problem of hindrance occurs. Therefore, it is conceivable to make the magnet smaller or the bottom plate thinner to weaken the magnetic force.However, this leads to a decrease in the rotational torque of the rotor and a lack of structural strength, and to obtain a highly reliable vibration generator. Becomes difficult.
- An object of the present invention is to apply a novel vibration generator capable of solving the problems of the above-described conventional technology and an electronic apparatus using the vibration generator.
- Another object of the present invention is to provide a highly reliable vibration generator without lowering the rotational torque of a rotor that rotates a vibrator and lack of structural strength, and an electronic device using the vibration generator. It is in.
- a vibration generator according to the present invention proposed to achieve the above object includes a bottom plate on which a flat coil substrate is mounted, a fixed shaft provided perpendicularly to the bottom plate, and a rotation with respect to the fixed shaft.
- a flat coil comprising: a magnet mounted via a free bearing and opposed to the surface of the flat coil substrate with a slight gap therebetween; and an unbalancer mounted on the magnet.
- a vibration generating device that generates vibration by rotating a magnet and an unbalancer by energizing a coil provided on a substrate
- a bottom plate is made of a non-magnetic material, and a magnetic material is provided on the opposite side of the magnet with the bottom plate as an interposition.
- a thin plate is attached.
- the bottom plate is made of a non-magnetic material, no attractive force is generated between the magnet and the bottom plate due to magnetic force, and the rotating force of the rotor including the magnet is generated by the attractive force. Will not be disturbed. Also, with the bottom plate in between, Since the magnetic thin plate is mounted on the side opposite to the magnet, the floating force caused by the rotation of the mouth including the magnet can be prevented by the attractive force between the magnetic thin plate and the magnet. In other words, the attractive force of the magnet can be adjusted by the area of the magnetic thin plate, and the optimal attractive force can be set without impairing the rotation of the rotor and preventing the rotor from floating.
- the vibration generator which concerns on this invention is hard to generate
- the rotation loss of the rotor due to the miniaturization and thinning of the device itself can be suppressed, and the floating due to the rotation of the mouth can be prevented.
- FIG. 1 is a front view showing a portable telephone which is an electronic device including the vibration generating device according to the present invention.
- FIG. 2 is a rear view showing a portable telephone provided with the vibration generator according to the present invention.
- FIG. 3 is a perspective view showing a vibration generator according to the present invention.
- FIG. 4 is an exploded perspective view showing a case of the vibration generator.
- FIG. 5 is a partially broken plan view showing the internal structure of the vibration generator.
- FIG. 6 is a bottom view showing the vibration generator.
- FIG. 7 is a cross-sectional view taken along line AA of the vibration generator shown in FIG.
- FIG. 8 is a side sectional view showing the internal structure of the vibration generator.
- FIG. 9 is an exploded perspective view showing the rotor and the stay.
- FIG. 10 is a plan view showing a flat coil on the stay side.
- FIG. 11 is a plan view showing a first-layer wiring board of a flat coil.
- FIG. 12 is a plan view showing a second-layer wiring board of a flat coil.
- FIG. 13 is a plan view showing a third-layer wiring board of a flat coil.
- FIG. 14 is a plan view showing a fourth-layer wiring board of a flat coil.
- FIG. 15A is a side view showing a weight for generating vibration.
- FIG. 15B is a plan view showing the weight for generating vibration.
- FIG. 16 is a cross-sectional view showing another example of the vibration generator.
- FIGS. 17A to 17C are plan views showing the layout of the conical coil-shaped electric connection terminals.
- FIG. 18A is a plan view showing another example of the cantilevered electrical connection terminal.
- FIG. 18B is a side view showing another example of the cantilevered electrical connection terminal.
- the vibration generator according to the present invention is used for a portable telephone as shown in FIGS.
- a portable telephone 10 as an example of an electronic device in which the vibration generator according to the present invention is used is, for example, a digital telephone having a carrier frequency band of 0.8 to 1.5 GHz.
- a housing 12, an antenna 14, a display unit 16, an operation unit 18, a microphone 20, a speaker 22, and the like are provided.
- the operation unit 18 has various operation keys, and includes a call button 18A, a call disconnection button 18B, a numeric keypad 18C, and the like.
- a call button 18A for example, a call button 18A, a call disconnection button 18B, a numeric keypad 18C, and the like.
- the display unit 16 for example, a liquid crystal display device can be used.
- the housing 12 has a front part 24 shown in FIG. 1 and a lear part 26 shown in FIG. 2, and a battery 28 can be detachably mounted on the lear part 26 side. it can.
- the antenna 14 is attached to the housing 12 so that it can be taken in and out.
- the housing 12 shown in FIG. 1 incorporates the vibration generator 40 according to the present invention.
- the vibration generating device 40 has a function of generating vibration when an incoming call is received on, for example, a portable telephone 10 and notifying the user of the incoming call by vibration.
- FIG. 3 is a perspective view illustrating a specific structure of the vibration generator.
- the vibration generator 40 is also called a vibration factory, and has a case 43 and a vibration motor 50 arranged in the case 43.
- FIG. 4 is an exploded perspective view of a case 43 constituting the vibration generator 40. In FIG. 4, illustration of the vibration module 50 is omitted.
- the case 43 has a lid member 45, a bottom plate 47, and a magnetic thin plate 48.
- the lid member 45 of the case 43 is made of a magnetically permeable material, for example, a metal such as iron, magnetic stainless steel or silicon steel plate, and is a member that closes a magnetic path.
- a magnetically permeable material for example, a metal such as iron, magnetic stainless steel or silicon steel plate, and is a member that closes a magnetic path.
- the bottom plate 47 is made of a nonmagnetic material such as aluminum or stainless steel, and is a substantially square plate member. At the four corners of the bottom plate 47, caulking portions 49 are provided. A hole 51 is formed at the center of the bottom plate 47. Further, a plurality of holes 400 are provided at equal intervals around the hole 51 of the bottom plate 47. Since the bottom plate 47 is made of a non-magnetic material, the magnetic force of the magnet 85 does not generate an attraction force between the magnet 85 of the bottom plate 80 and the bottom plate 47, and the bottom plate 47, etc. Is no longer hindered by the suction force.
- the magnetic thin plate 48 is made of a magnetically permeable material, for example, a metal such as iron, a magnetic stainless steel or a silicon steel plate. Since the magnetic thin plate 48 is attached to the rotor 80 opposite to the magnet 85 with the bottom plate 47 therebetween (outside of the bottom plate 47), the magnetic thin plate 48 and the magnet 85 are connected to each other. The magnet 85 is attracted to the bottom plate 47 side by the attraction force between them, thereby preventing the magnet 80 from floating due to the rotation of the rotor 80.
- a magnetically permeable material for example, a metal such as iron, a magnetic stainless steel or a silicon steel plate. Since the magnetic thin plate 48 is attached to the rotor 80 opposite to the magnet 85 with the bottom plate 47 therebetween (outside of the bottom plate 47), the magnetic thin plate 48 and the magnet 85 are connected to each other. The magnet 85 is attracted to the bottom plate 47 side by the attraction force between them, thereby preventing the magnet 80 from floating due to the rotation of the rotor 80.
- the lid member 45 in FIG. 4 has a flat portion 53 substantially in a substantially circular shape and four corner portions 55.
- a cutout 57 is formed in each of the four corners 55. In these notches 57, the force shrink portions 49 at the corresponding positions of the bottom plate 47 are fitted, and the force shrink portions 49 are mechanically shrunk so that the cover member as shown in FIG. 45 and the bottom plate 47 are integrally assembled with the vibration motor 50 housed.
- the magnetic thin plate 48 is attached to the bottom plate 47 with an adhesive or the like. Note that the magnetic thin plate 48 may be attached in a detachable state. This allows you to Thus, it can be easily exchanged for another size or shape.
- the vibration motor 50 shown in FIG. 3 is electrically connected to a main circuit board 99 by using an electric connection terminal 270.
- FIG. 5 is a partially cutaway plan view showing an example of the shape of the vibration generator, and shows a state where the lid member 45 shown in FIG. 4 has been removed.
- FIG. 6 is a bottom view showing an example of the shape of the vibration generator, and
- FIG. 7 is a cross-sectional view of the vibration generator taken along line AA in FIG.
- FIG. 8 is a cross-sectional view showing the cross-sectional structure shown in FIG. 7 in more detail.
- the lid member 45 is made of a material capable of forming a magnetic circuit, such as iron or stainless steel.
- a vibration motor 50 and, for example, a plurality of electronic components 71, 72, 73, 74 are accommodated in a space between the bottom plate 47 and the lid member 45. .
- the cover member 45 is attached to the bottom plate 47 by caulking as shown in FIGS. 3 and 4, and accommodates the vibration motor 50 therein.
- the vibration motor 50 has a rotor 80 and a stator 83.
- the stay 83 supports the rotor 80 rotatably.
- the vibration of the vibration generator 40 is achieved.
- the rotor 80 of the motor 50 generates vibration.
- the rotor 80 of the vibration motor 50 can rotate continuously around the central axis CL with respect to the stay 83.
- the mouth 80 has a bearing 150, a sleeve 151, a magnet 85, a weight 87 for generating vibration, and a rotor yoke 89.
- the bearing 150 is a cylindrical member, and the bearing 150 is made of, for example, a sintered metal or a resin.
- this resin for example, PPS (polyphenylene sulfide) or the like can be used.
- the sleeve 151 is fixed to the outer peripheral surface of the bearing 150 by, for example, press fitting.
- This sleeve 15 1 is also called a bearing housing and is made of metal such as brass, aluminum, stainless steel, or resin (for example, PPS). More made.
- the bearing 150 and the sleeve 15 1 are separate members, but the bearing 150 and the sleeve 15 1 may be formed as a single body. And the number of assembly steps can be reduced.
- the driving magnet 85 shown in FIG. 8 is arranged on the outer peripheral surface of the sleep 15 1.
- the magnet 85 is a donut-shaped or ring-shaped magnet, and uses, for example, a neody-based or samakopa-based sintered material.
- the magnet 85 is fixed to the inner surface of the rotor yoke 89 using, for example, an adhesive.
- the magnet 85 shown in FIG. 8 has an S pole and an N pole alternately multipole magnetized along the circumferential direction.
- the rotor yoke 89 is made of a magnetically permeable material such as iron or stainless steel.
- the rotor yoke 89 is press-fitted or adhered to the outer surface of the sleeve 15 1 (or the bearing 150 when the sleeve 15 1 and the bearing 150 are connected), ultrasonically welded or swaged, or all of them. It is fixed using.
- a triangular pyramid-shaped projection (not shown) is provided on the end face of the sleeve 15 1 (or the bearing 150 when the sleeve 15 1 and the bearing 150 are integrated). By doing so, welding can be performed by efficiently applying ultrasonic waves from the horn to which ultrasonic waves are applied through these projections.
- the diameter of the rotor yoke 89 is substantially the same as the diameter of the magnet 85.
- Weights 87 are provided on the outer peripheral surfaces of the rotor yoke 89 and the magnet 85 in FIG.
- the weight 87 has a semicircular shape as shown in FIG. 15A and FIG. 15B.
- it is fixed using an adhesive or another fixing method.
- the weight 87 is used to continuously rotate the rotor 80 shown in FIG. 5 with respect to the stay 83 around the central axis CL of the shaft 91, thereby obtaining rotational impedance energy as a vibration component. It is a balancer.
- the weight 87 is made of a material having a large specific gravity, such as tungsten.
- the rotor 80 shown in FIG. 8 is arranged in a space between the lid member 45 and the bottom plate 47. This allows the magnet 85 and the flat coil 120 to form a pair with a slight gap. It will be in the state of being arranged in the direction. Next, the structure of the stay 83 shown in FIG. 8 will be described.
- the stator 83 has a bottom plate 47, a magnetic thin plate 48, a flat coil 120, a fixed shaft 91, a terminal housing 250, and an electrical connection terminal 270.
- the electric connection terminal 270 is electrically connected to the flat coil 120 by, for example, soldering, and the electric connection terminal 270 is connected to the flat coil 120. As shown in FIG. 7, it has a function of electrically connecting to the electrode 2 71 of the main circuit board 99.
- the electrical connection terminal 270 can be made of a so-called cantilever type elastically deformable conductive metal, for example, Au or Cu.
- the terminal housing 250 in FIG. 8 has a rectangular shape as shown in FIG. 6, and is a member for fixing the electric connection terminal 270 to the bottom plate 47.
- the terminal housing 250 is made of an electrically insulating resin, for example, PPS, LCP (liquid crystal polymer) or the like.
- the terminal housing 250 is shown in FIG. 6 and covers almost the entire bottom plate 47. However, the terminal housing 250 has two openings 255, and the two electric connection terminals 270 and 270 are exposed from the openings 255.
- the fixed shaft 91 in FIG. 8 is a fixed shaft that is vertically attached to the lid member 45 and the bottom plate 47 by, for example, welding.
- the center of the fixed axis 91 is the central axis CL.
- One end of the fixed shaft 91 is fixed to the inner surface 45H of the lid member 45 by a welded portion 45G.
- the other end of the fixed shaft 91 is fixed to the inner peripheral surface 47H of the hole of the bottom plate 47 by a welded portion 47G.
- the fixed shaft 91 is made of, for example, stainless steel, and is set to have a considerably short length along the central axis CL.
- Each end face of one end and the other end of the fixed shaft 91 is not a flat face but a convex curved face.
- one end and the other end of the fixed shaft 91 can be securely welded and fixed to the lid member 45 and the bottom plate 47 by the welded portions 45 G and 47 G.
- one or both of the end surfaces of the fixed shaft 91 may be flat surfaces as necessary.
- the fixed shaft 91 is inserted into a bearing 150 of the rotor 80, and is supported so as to be rotatable in the radial direction with respect to the bearing 150.
- the flat coil 120 has a plurality of drive patterns 121 as shown in the exploded perspective view of FIG. These driving patterns 121 are arranged along the circumferential direction around the hole 120H around the central axis CL.
- FIG. 10 is a plan view showing an example of the shape of the drive pattern of the flat coil 12 0.
- the drive pattern 12 1 has a substantially fan-like shape, for example, the drive pattern 12 1 Are formed in the circumferential direction.
- This flat coil 120 is fixed to the inner surface 47M of the bottom plate 47 shown in FIG.
- the plurality of electronic components 7 1 to 7 4 are directly adhered and fixed to the flat coil 120 with an adhesive, and each of the electronic components 7 1 to 7 4 is fixed to the flat coil 1. It is electrically connected to the necessary places through 20.
- the flat coil 120 is formed by stacking a plurality of thin flexible wiring boards.
- FIGS. 11 to 14 are plan views showing examples of the shapes of the wiring patterns of a plurality of wiring boards.
- FIG. 11 shows the first-layer wiring board 3 1 1
- FIG. 12 shows the second-layer wiring board 3 1 2
- FIG. 13 shows the third-layer wiring board 3 1 3
- FIG. 14 shows a fourth-layer wiring board 314.
- the drive pattern 122 has the following merits by, for example, stacking the first-layer wiring board 311 to the fourth-layer wiring board 314.
- each drive pattern 121 by laminating, for example, the first to fourth wiring boards 311 to 314, the magnetic field generated by the drive pattern It can be considerably larger than using a wiring board.
- the weight 87 can generate a larger vibration component, so that the vibration generator 40 can generate a larger vibration even though the size and the thickness are reduced.
- the first-layer wiring board 3 1 1 to fourth-layer wiring board 3 14 shown in Figs. 11 to 14 show the U-phase, V-phase, W-phase, and common (C) wiring, respectively. ing.
- the flat coil 120 shown in FIG. 8 is configured by stacking, for example, four wiring boards in order to increase the rotational driving force of the rotor 80.
- the flat-plate coil 120 is not limited to this, and may be configured by a single-layer wiring board, or may be configured by laminating two, three, or five or more wiring boards.
- the above-described flat coil 120 is formed by laminating a plurality of wiring boards as described above to form a multilayer (for example, four layers), thereby increasing a torque constant when rotating the rotor 80.
- the vibration generator 40 can be made thinner and smaller.
- Each drive pattern 122 is connected to the extraction electrode of the U layer, the V layer, and the W layer, and the extraction electrode is electrically connected to the main circuit board 99 shown in FIG.
- Each drive pattern 1 21 of the flat coil 1 20 shown in Fig. 5 is, for example, a three-phase full-wave type energized sensorless type. Continuous rotation is enabled by full-wave drive.
- the vibration generator 40 can be made thinner in the center axis CL direction and smaller in the diameter direction. Can be realized.
- the magnetic thin plate 48 attached to the outside of the bottom plate 47 is a thin plate made of a magnetic material with respect to the bottom plate 47 made of a non-magnetic material as described above, and is not generated in the bottom plate 47.
- the magnetic thin plate 48 generates an attractive force between the rotor 80 and the magnet 85 to prevent the rotor 80 or the like from floating due to rotation.
- the bottom plate 47 is made of a non-magnetic material, the attracting force of the magnet 85 is not generated at the bottom plate 47, whereby the rotor 80 is not drawn to the bottom plate 47 side, and the bearing 150 By reducing the contact friction between the base 80 and the bottom plate 47, a sufficient rotational torque can be obtained even if the mouth 80 is reduced in size and weight;
- the magnet 85 is attracted to the bottom plate 47 side to prevent the rotor 8 from floating due to rotation.
- the attractive force of the magnet 85 can be adjusted according to the area of the magnetic thin plate 48, there is no rotation loss caused by excessively attracting the rotor 80, and the attractive force that can prevent the rotor 80 from floating due to rotation is reduced. It can be set freely and easily.
- the area of the magnetic thin plate 48 can be determined from the required suction force based on the design specifications of the vibration generator 40, but if the manufacturing variation occurs, the area of the magnetic thin plate 48 to be attached is determined. By performing the fine adjustment, it is possible to secure the specified rotation of the rotor 80 and to prevent the rotor 80 from lifting, and the product yield can be greatly improved.
- the electronic components 71 to 74 shown in FIG. 5 are, for example, as follows. That is, the electronic component 71 is a driver IC (integrated circuit), the electronic component 72 is a resistance element, and the electronic component 73 and the electronic component 74 are capacitors. Although these electronic components 71 to 74 are external components, they can be directly mounted on the flat coil 120.
- the electronic component 71 is a driver IC (integrated circuit)
- the electronic component 72 is a resistance element
- the electronic component 73 and the electronic component 74 are capacitors.
- these electronic components 71 to 74 are external components, they can be directly mounted on the flat coil 120.
- These electronic components 71 to 74 can be mounted collectively on the flexible wiring board 123 by reflow soldering or the like. These electronic components 71 to 74 are, for example, like bare chips, and have a size of about 2 mm square as an example.
- the height of these electronic components 71 to 74 in the direction of the central axis CL is such that they do not hit the weight 87 of the rotor 80 shown in FIG. In other words, the weight 87 and the electronic components can be overlapped when viewed in the plane of FIG. 5, thereby reducing the width of the vibration generator 40 in the vertical and horizontal directions as viewed in FIG. Can be achieved.
- the vibration generator 40 is electrically connected to a main circuit board 99 shown in FIGS.
- the electrical connection terminal 270 is an elastically deformable terminal.
- the electrical connection terminal 270 is electrically connected to the electrode 271 of the main circuit board 99 by pressing it.
- As the main circuit board 99 a hard board having a relatively large thickness, for example, a glass epoxy board or the like can be used.
- the electrical connection terminals 270 of the vibration generator 40 electrically connect the respective drive patterns 12 1 of the flat coil 12 0 and the electronic components 7 1 to 7 4 to the main circuit board 99. Can be connected to
- a hole 400 is formed at a substantially central portion of each drive pattern 122. This hole 400 is also shown in FIGS. Each of the holes 400 is formed at the center of the drive pattern 122, and the hole 400 is also formed at the position of the corresponding bottom plate 47. Each hole 400 is formed at a position irrelevant to the driving force generating portion of the driving pattern 122.
- FIG. 16 is a cross-sectional view illustrating another example of the vibration generator according to the present invention.
- a coil-shaped electric connection terminal 270 is used as a terminal for making electrical contact with the main circuit board.
- the electrical connection terminal 270 (see FIG. 7) is made of a cantilevered conductive metal.
- the conical coil-shaped electrical connection is used.
- Terminal 270 is used.
- FIGS. 17A to 17C are plan views showing the layout of the conical coil-shaped electric connection terminals used in the vibration generator shown in FIG.
- FIG. 17A shows an example in which two electrical connection terminals 270 are arranged on the right side of the vibration generator 40 in the figure, and FIG. An example is shown in which it is arranged at the even part which is a diagonal of 0. Which layout to use may be determined according to the wiring layout of the circuit board 99 to be connected.
- FIG. 17C shows an example in which four electric connection terminals 270 are arranged corresponding to each even part of the vibration generator 40.
- Each electric connection terminal 270 corresponds to, for example, four phases of 11, V, W, and common given to the plate-shaped coil 120.
- the number and layout of the electrical connection terminals 270 are not limited to these, and may be set according to the current applied to the plate-like coil 120 and the wiring layout of the circuit board 99.
- FIGS. 18A and 18B are schematic views showing another example of the cantilevered electrical connection terminal, FIG. 18A is a plan view thereof, and FIG. 18B is a side view thereof.
- the electrical connection terminal 270 is a cantilever type but is bent in an L shape in plan view, and the two L-shaped electrical connection terminals 270 are vibration generators 40. It is arranged along each of the two sides.
- the length from the fixed end 270a to the free end 270b is larger than that of a linear electrical connection terminal.
- the amount of lateral displacement when the free end 27 Ob contacts the pad of the circuit board 99 can be reduced, and the size of the pad can be reduced.
- the L-shaped electric connection terminals 270 are arranged in different directions, the position of the free end 270b is arranged on the diagonal of the vibration generator 40, and the circuit board 990 The distance between two corresponding pads can be increased, and interference between pads can be avoided to increase the degree of freedom in pad layout.
- the vibration module 50 is housed in the case 43 shown in FIG.
- the vibration motor 50 adopts a structure in which the magnet 85 of the mouth 80 and the plate-shaped coil 120 of the stator 83 face each other with a slight gap. are doing.
- the vibration generator 40 including the vibration motor 50 can significantly reduce the thickness in the direction of the central axis CL as compared with the conventional brushed motor.
- the weight 87 is made of a material having a high specific gravity, such as tungsten, for example. However, only the very thin and small weight 87 is used. Due to large rotational unbalance energy when rotating Vibration components can be generated.
- lid member 45 of the case 43 shown in FIG. 3 is formed in a drawn shape, it is possible to reduce the weight and thickness while increasing rigidity.
- the vibration generator 40 can be made smaller and thinner in the center axis CL direction. Power consumption as well as low power consumption.
- the flat coil 120 be formed by stacking a plurality of wiring boards.
- Each of the plurality of wiring boards is called a laminate coil.
- Each laminated coil has a coil copper wire arranged inside an insulating material, for example, polycarbonate.
- the flat coil 120 is fixed to the flat bottom plate 47 by directly pasting it with an adhesive or the like.
- the present invention is not limited to this, and the flat coil 120 may be fixed to the bottom plate 47 by force clamping, which is mechanical fixing.
- Some electronic components can be electrically connected to the surface electrode of the flat coil 120 by, for example, wire bonding.
- the fixed shaft 91 on the stay 83 side can be fixed to the lid member 45 and the bottom plate 47 by welding, for example, with a YAG laser.
- the method of fixing the fixed shaft 91 is not limited to welding, but may be bonding, press-fitting, or caulking.
- both ends of the fixed shaft 91 may be spherical, but a flat surface is more preferable as described above.
- the bearing 150 of the rotor 80 can be made of, for example, PPS containing carbon fiber.
- This cylindrical bearing is not limited to plastic but may be sintered metal.
- the conventional shaft on the side of the mouth is connected to the stationary shaft 91 by making the bearing 150 of the mouth 80 rotatable with respect to the fixed shaft 91 on the side of the stay 83.
- the bearing 150 of the mouth 80 rotatable with respect to the fixed shaft 91 on the side of the stay 83.
- the rotor bearing 150 and the stationary shaft 91 Wear is reduced and the life of the vibration generator 40 is extended. Also, since the bearing 150 on the mouth 80 is rotatably supported on the fixed shaft 91 on the stay 83, the length of the vibration generator 40 in the axial direction is reduced. Even if it is reduced, the shaft runout when the mouth 80 of the vibration generator 40 rotates can be minimized. As a result, the vibration generator 40 can be made thinner and smaller. In addition, as the axial length of the bearing 150 approaches the length of the fixed shaft 91, the shaft runout of the rotor 80 is further reduced.
- vibration generator according to the present invention can be applied not only to portable telephones but also to other portable communication devices, for example, portable information terminals, computers, and electronic devices in other fields.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020057001497A KR101113804B1 (ko) | 2003-06-03 | 2004-06-03 | 진동 발생 장치 및 전자 기기 |
US10/522,337 US7161269B2 (en) | 2003-06-03 | 2004-06-03 | Vibration generator and electronic apparatus |
EP04736007.8A EP1550514B1 (en) | 2003-06-03 | 2004-06-03 | Vibration generator and electronic apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-157471 | 2003-06-03 | ||
JP2003157471 | 2003-06-03 | ||
JP2003-286438 | 2003-08-05 | ||
JP2003286438A JP3987011B2 (ja) | 2003-06-03 | 2003-08-05 | 振動発生装置および電子機器 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004108306A1 true WO2004108306A1 (ja) | 2004-12-16 |
Family
ID=33513365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/008067 WO2004108306A1 (ja) | 2003-06-03 | 2004-06-03 | 振動発生装置及び電子機器 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7161269B2 (ja) |
EP (1) | EP1550514B1 (ja) |
JP (1) | JP3987011B2 (ja) |
KR (1) | KR101113804B1 (ja) |
WO (1) | WO2004108306A1 (ja) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
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US8012136B2 (en) * | 2003-05-20 | 2011-09-06 | Optimyst Systems, Inc. | Ophthalmic fluid delivery device and method of operation |
ATE501766T1 (de) | 2003-05-20 | 2011-04-15 | James F Collins | Ophthalmisches arzneimittelabgabesystem |
US7798029B2 (en) * | 2006-02-20 | 2010-09-21 | Doo Sang Kim | Vibration apparatus for generating spheroid wavelength |
US20090212133A1 (en) * | 2008-01-25 | 2009-08-27 | Collins Jr James F | Ophthalmic fluid delivery device and method of operation |
JP5254312B2 (ja) * | 2008-03-10 | 2013-08-07 | 日本電産コパル株式会社 | モータ |
US20100007229A1 (en) * | 2008-07-08 | 2010-01-14 | Do Hyun Kim | Vibration Motor |
US20100242640A1 (en) * | 2009-03-24 | 2010-09-30 | Motorola, Inc. | Vibrator Assembly having a Cylindrical Unbalanced Counterweight |
US10154923B2 (en) | 2010-07-15 | 2018-12-18 | Eyenovia, Inc. | Drop generating device |
CA2805426C (en) | 2010-07-15 | 2020-03-24 | Corinthian Ophthalmic, Inc. | Drop generating device |
WO2012009696A2 (en) | 2010-07-15 | 2012-01-19 | Corinthian Ophthalmic, Inc. | Ophthalmic drug delivery |
WO2012009702A1 (en) | 2010-07-15 | 2012-01-19 | Corinthian Ophthalmic, Inc. | Method and system for performing remote treatment and monitoring |
CN102056059B (zh) * | 2011-01-05 | 2014-08-13 | 瑞声声学科技(深圳)有限公司 | 多功能发声器 |
WO2013090468A1 (en) | 2011-12-12 | 2013-06-20 | Corinthian Ophthalmic, Inc. | High modulus polymeric ejector mechanism, ejector device, and methods of use |
TW201721014A (zh) * | 2015-12-01 | 2017-06-16 | guo-zhang Huang | 波浪型發電裝置 |
JP2017118734A (ja) * | 2015-12-25 | 2017-06-29 | 日本電産セイミツ株式会社 | 振動モータ、振動部付き基板、無音報知デバイスおよび振動モータの製造方法 |
JP6657058B2 (ja) | 2016-11-28 | 2020-03-04 | ミネベアミツミ株式会社 | 電子機器 |
JP6664691B2 (ja) | 2016-11-28 | 2020-03-13 | ミネベアミツミ株式会社 | 振動発生装置及び電子機器 |
CN111093742B (zh) | 2017-06-10 | 2022-09-16 | 艾诺维亚股份有限公司 | 用于处理流体并将流体输送到眼睛的方法和设备 |
KR102238019B1 (ko) * | 2020-01-31 | 2021-05-31 | 주식회사 알머스 | 이어폰용 스피커 유닛 |
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JPH11218713A (ja) * | 1998-01-30 | 1999-08-10 | Fuji Xerox Co Ltd | 磁気軸受 |
JP2001231197A (ja) * | 2000-02-17 | 2001-08-24 | Suzuka Fuji Xerox Co Ltd | モータおよびスキャナー用モータ |
JP2001232290A (ja) * | 1999-12-15 | 2001-08-28 | Namiki Precision Jewel Co Ltd | 小型扁平ブラシレス振動モータ |
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JPH0817563B2 (ja) * | 1987-09-30 | 1996-02-21 | 松下電器産業株式会社 | 偏平ブラシレスモータ |
JPH0279762A (ja) * | 1988-09-14 | 1990-03-20 | Sony Corp | フラット形ブラシレスモータ |
JP2736023B2 (ja) * | 1994-12-27 | 1998-04-02 | ユニデン株式会社 | バイブレータ取付構造、バイブレータ取付用保持具、および、バイブレータ取付方法 |
JP3281268B2 (ja) * | 1996-09-25 | 2002-05-13 | 松下電器産業株式会社 | 受信機の小型モータ保持装置 |
US6051900A (en) * | 1999-08-03 | 2000-04-18 | Tokyo Parts Industrial Co., Ltd. | Flat coreless vibrator motor having no output shaft |
JP2002291197A (ja) * | 2001-03-28 | 2002-10-04 | Namiki Precision Jewel Co Ltd | 給電機構 |
KR200268109Y1 (ko) * | 2001-12-06 | 2002-03-15 | 김정훈 | 편평형 무정류자 진동모터 |
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2003
- 2003-08-05 JP JP2003286438A patent/JP3987011B2/ja not_active Expired - Fee Related
-
2004
- 2004-06-03 KR KR1020057001497A patent/KR101113804B1/ko not_active IP Right Cessation
- 2004-06-03 EP EP04736007.8A patent/EP1550514B1/en not_active Expired - Fee Related
- 2004-06-03 WO PCT/JP2004/008067 patent/WO2004108306A1/ja active Application Filing
- 2004-06-03 US US10/522,337 patent/US7161269B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11218713A (ja) * | 1998-01-30 | 1999-08-10 | Fuji Xerox Co Ltd | 磁気軸受 |
JP2001232290A (ja) * | 1999-12-15 | 2001-08-28 | Namiki Precision Jewel Co Ltd | 小型扁平ブラシレス振動モータ |
JP2001231197A (ja) * | 2000-02-17 | 2001-08-24 | Suzuka Fuji Xerox Co Ltd | モータおよびスキャナー用モータ |
Also Published As
Publication number | Publication date |
---|---|
KR20060015442A (ko) | 2006-02-17 |
EP1550514A1 (en) | 2005-07-06 |
KR101113804B1 (ko) | 2012-07-27 |
JP3987011B2 (ja) | 2007-10-03 |
EP1550514A4 (en) | 2016-12-07 |
EP1550514B1 (en) | 2018-11-07 |
US7161269B2 (en) | 2007-01-09 |
JP2005020980A (ja) | 2005-01-20 |
US20060082231A1 (en) | 2006-04-20 |
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