WO1998019383A1 - Generateur de vibrations - Google Patents

Generateur de vibrations Download PDF

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Publication number
WO1998019383A1
WO1998019383A1 PCT/JP1997/003886 JP9703886W WO9819383A1 WO 1998019383 A1 WO1998019383 A1 WO 1998019383A1 JP 9703886 W JP9703886 W JP 9703886W WO 9819383 A1 WO9819383 A1 WO 9819383A1
Authority
WO
WIPO (PCT)
Prior art keywords
permanent magnet
vibration generator
coil
generator according
housing
Prior art date
Application number
PCT/JP1997/003886
Other languages
English (en)
Japanese (ja)
Inventor
Hideo Nakazaki
Nobutaka Nakamura
Masayuki Mouri
Takafumi Yamamoto
Kazushige Matsuoka
Taisuke Ueda
Original Assignee
Omron Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Omron Corporation filed Critical Omron Corporation
Publication of WO1998019383A1 publication Critical patent/WO1998019383A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system

Definitions

  • the present invention relates to a vibration generator for a vibration calling device used for a pager, a cellular phone, and the like.
  • vibration generators using movable permanent magnets have been proposed for these devices.
  • the movable part is sealed with the lower yoke 44 and the upper yoke 43 at both ends of the case 41 via the mouth spring springs 48 and the upper spring springs 45 arranged on both end faces of the movable part.
  • a loosely fixed housing 43 and a low-frequency oscillation circuit 40 are integrally fixed. Then, vibration is generated by applying a low-frequency current to the drive coil 44 (Japanese Utility Model Laid-open No. 5-284864, Japanese Utility Model No. 5-61058).
  • the permanent magnet which is In order to vibrate in the case, the repulsive force of the spring generated by the contact between the spring and the permanent magnet is used. For this reason, there is a limit to the frequency that the vibration generator can follow.
  • the length of the cylindrical case since it is necessary to add the length of the cylindrical case to the vibration range by the number of turns of the spring as the length of the cylindrical case, there is a limit to miniaturization.
  • the service life was limited due to the fatigue characteristics of the spring.
  • the present invention has been made in view of the above problems, and has as its object to provide a vibration generator that can vibrate up to a high frequency, and that can be downsized and have a long life. Disclosure of the invention
  • a vibration generator of the present invention comprises: a permanent magnet movable in a passage formed in a housing; A coil for applying a driving force to the permanent magnet by applying a signal; and a magnetic repulsion unit provided on at least one side of the passage and applying a magnetic repulsive force to the proximity of the permanent magnet; It is equipped with.
  • a driving force is applied to the permanent magnet by the magnetic field of the coil each time a pulse is applied to the coil.
  • the driving force causes the permanent magnet to move in the housing below the coil.
  • the permanent magnet receives repulsion in the direction opposite to the direction of movement due to the magnetic force of the magnetic repulsion means as it moves right or left. Therefore, each time the coil is turned on or off, the position of the permanent magnet determines the direction of the force applied to the permanent magnet.
  • the permanent magnet reciprocates in the housing in response to the ON / OFF of the coil, and vibrates even at a high frequency.
  • a permanent magnet is housed in the housing, a repulsion means is provided at at least one end in the housing, and a drive coil for energizing a pulse is provided on the outer periphery of the housing. Then, the attractive force and the repulsive force of the drive coil and the repulsive force of the magnetic repulsive means act on the mover, which is a permanent magnet, to vibrate the permanent magnet. For this reason, power consumption is small and a small vibration generator can be manufactured at low cost. Further, since the movable permanent magnet does not come into contact with the magnetic repulsion means, a long-life vibration generator can be obtained.
  • a second feature of the present invention is that the coil includes at least two coils that apply a forward and a reverse magnetic field to the permanent magnet when a pulse signal is applied.
  • a third feature is that the magnetic repulsion means is composed of a permanent magnet disposed on one side of the housing.
  • a fourth feature is that the magnetic repulsion means is a permanent magnet, is disposed on both sides of the movable permanent magnet, and has different magnetic forces.
  • a fifth feature is that the inner diameter of the housing is configured to be larger at the cylinder end than at the center of the cylinder, and a permanent magnet having an outer diameter larger than the inner diameter of the center of the cylinder is magnetically repelled within the cylinder end. That is, it was mounted as a means.
  • a sixth feature is that the magnetic repulsion means is composed of another coil different from a driving coil provided outside one end of the housing.
  • the seventh feature is that another coil different from the coil that provides the driving force turns ON in response to a request signal from the outside.
  • An eighth feature is that the casing has an arc shape in a side view.
  • a ninth feature is that the pulse signal that applies a driving force to the coil is an alternating signal whose polarity alternates between positive and negative.
  • a tenth feature is that the movable permanent magnet is configured to move two permanent magnets in the axial direction. Are joined through a non-magnetic material.
  • a first feature is that a ventilation hole is provided for communicating the passage of the housing with the outside of the housing.
  • the permanent magnet hardly receives air resistance (movement resistance) when moving in the passage, the permanent magnet moves smoothly, and the magnetic efficiency with respect to the permanent magnet improves.
  • a first feature is that the ventilation holes are provided at both ends of the passage.
  • the permanent magnet is less susceptible to air resistance in the forward and return paths, and the magnetic efficiency for the permanent magnet is further improved.
  • a thirteenth feature is that the housing has a ventilation passage having a diameter larger than that of the movable permanent magnet in the vicinity of the magnetic repulsion means, and the ventilation hole is provided with the ventilation passage. Communication with the use passage.
  • air can be efficiently taken in and out of the passage and the outside of the spool when the permanent magnet reciprocates.
  • a fourteenth feature is that the frequency of a pulse signal for applying a driving force to the coil is switched so as to increase stepwise as the operation time elapses.
  • FIG. 1 is an external perspective view of a vibration generator showing a first embodiment of the present invention.
  • FIG. 2 is an internal structural view showing the vibration generator according to the first embodiment, partially cut away.
  • FIG. 3 is a cross-sectional view of the vibration generator according to the first embodiment.
  • FIGS. 4A to 4C are diagrams showing positions of movable permanent magnets for explaining the operation principle of the vibration generator according to the first embodiment.
  • 5A to 5D are diagrams showing positions of movable permanent magnets for explaining the operation principle of the vibration generator according to the first embodiment.
  • FIG. 6 is a diagram illustrating the force applied to the movable permanent magnet from the magnetic field of the coil and the magnetic field of the fixed permanent magnet for explaining the operation principle of the vibration generator according to the first embodiment.
  • FIG. 7 is a diagram illustrating the force applied to the movable permanent magnet from the magnetic field of the coil and the magnetic field of the fixed permanent magnet for explaining the operation principle of the vibration generator according to the first embodiment.
  • FIG. 8 is a diagram illustrating the force applied to the movable permanent magnet from the magnetic field of the coil and the magnetic field of the fixed permanent magnet for explaining the operation principle of the vibration generator according to the first embodiment.
  • FIG. 9 is an external perspective view of a vibration generator according to the second embodiment of the present invention.
  • FIG. 10 is an internal structural diagram showing the vibration generator according to the second embodiment, partially cut away.
  • FIG. 11 is a cross-sectional view of the vibration generator according to the second embodiment.
  • FIG. 12 is a diagram showing a main part of a vibration generator according to a third embodiment of the present invention.
  • FIG. 13 is a diagram showing a schematic configuration of a vibration generator according to a fourth embodiment of the present invention.
  • FIG. 14 is a diagram illustrating a waveform applied to the coil of the vibration generator according to each of the above-described embodiments.
  • FIG. 15 is a cross-sectional view of a vibration generator provided with a shield plate.
  • FIG. 16 is a diagram showing waveforms applied to a coil for describing a vibration generator according to a fifth embodiment of the present invention.
  • FIGS. 17A to 17D are diagrams showing positions of movable permanent magnets for explaining the operation principle of the vibration generator according to the fifth embodiment.
  • FIGS. 18A and 18B are diagrams showing positions of movable permanent magnets for explaining the operation principle of the vibration generator according to the fifth embodiment.
  • FIG. 19 is a diagram showing the force applied to the movable permanent magnet from the magnetic field of the coil and the magnetic field of the fixed permanent magnet for explaining the operation principle of the vibration generator according to the fifth embodiment.
  • FIG. 20 is a diagram showing the force applied to the movable permanent magnet from the magnetic field of the coil and the magnetic field of the fixed permanent magnet to explain the operation principle of the vibration generator according to the fifth embodiment.
  • FIG. 21 is a diagram illustrating a force applied to a movable permanent magnet from a magnetic field of a coil and a magnetic field of a fixed permanent magnet to explain the operation principle of the vibration generator according to the fifth embodiment.
  • FIG. 22 is a sectional view of a main part of a vibration generator according to a sixth embodiment of the present invention.
  • FIG. 23 is a side view of the vibration generator according to the sixth embodiment.
  • FIG. 24 is an end view of the vibration generator according to the sixth embodiment.
  • FIG. 25 shows the operation of the vibration generator according to the sixth embodiment.
  • FIG. 9 is a cross-sectional view of a main part for describing a normal state when the flip-flop is turned on.
  • FIG. 26 shows the operation of the vibration generator according to the sixth embodiment.
  • FIG. 3 is a cross-sectional view of a main part for describing the direction of magnetic flux when N is applied.
  • FIG. 27 shows the operation of the vibration generator according to the sixth embodiment.
  • FIG. 4 is a cross-sectional view of a main part for explaining movement of a movable permanent magnet when the position is changed to N.
  • FIG. 28 is a fragmentary cross-sectional view for explaining the operation of the vibration generator according to the sixth embodiment, particularly, the movement of the movable permanent magnet when the switch is turned off.
  • FIG. 29 is a cross-sectional view of the vibration generator when two drive coils are used.
  • FIG. 30 is a diagram showing the magnetic field of the coil and the force applied to the movable permanent magnet from the fixed permanent magnet, for explaining the operation principle of the vibration generator.
  • FIG. 31 is a sectional view of a main part of a vibration generator according to a seventh embodiment of the present invention.
  • FIG. 32 is a side view of the vibration generator according to the seventh embodiment.
  • FIG. 33 is an end view of the vibration generator according to the seventh embodiment.
  • FIG. 34 is a sectional view of a main part of a vibration generator according to an eighth embodiment of the present invention.
  • FIG. 35 is a side view of the vibration generator according to the eighth embodiment.
  • FIG. 36 is an end view of the vibration generator according to the eighth embodiment.
  • FIG. 37 is a cross-sectional view of a vibration generator including a shield plate.
  • FIG. 38A and FIG. 38B are diagrams illustrating the operation of the vibration generator according to the ninth embodiment of the present invention.
  • FIG. 39 is a waveform diagram for explaining the vibration generator according to the ninth embodiment of the present invention.
  • FIG. 40 is a cross-sectional view showing a conventional vibration generator. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is an external perspective view of a vibration generator showing a first embodiment of the present invention.
  • FIG. 2 is an internal structural view showing the vibration generator of FIG. 1 in a partially cutaway manner.
  • Figure FIG. 3 is a sectional view of the vibration generator of FIG.
  • the vibration generator of the first embodiment includes a housing 1 which is a cylindrical body having an inner space 2, a fixed permanent magnet 3 fixed to one end of the inner space 2 of the housing 1, A fixed permanent magnet 4 fixed to the other end of the cavity 2, a movable permanent magnet 5 movably housed between the fixed permanent magnets 3, 4 of the inner cavity 2, and wound around the outer periphery of the housing 1.
  • the fixed permanent magnet 3 and the fixed permanent magnet 4 have different magnetic forces, and the permanent magnet 3 has a larger magnetic force here. In this way, by making the magnetic force different, the movable permanent magnet 5 is located on the minus side when the drive coil 6 is not energized, so that the initial operation is smooth.
  • the housing 1 has an outer peripheral portion 1c around which the drive coil 6 is wound, and outer peripheral portions 1a, 1b around which the drive coil 6 is not wound.
  • the outer peripheral portion 1c is set to have a smaller diameter than the outer peripheral portions 1a and 1. In this manner, the outer peripheral surface can be made substantially the same as the outer peripheral portions 1a and 1b in a state where the drive coil 6 is wound around the outer peripheral portion 1c. Therefore, a small-sized vibration generator having a small outer diameter can be obtained.
  • the outer peripheral portion 1a is formed shorter in the axial direction than the outer peripheral portion 1b.
  • An outer peripheral portion 1c is formed between the outer peripheral portions 1a and 1b.
  • the inside diameter of both ends of the case 1 to which the fixed permanent magnet 3 and the fixed permanent magnet 4 are fixed is set to be larger than the diameter of the inner space 2. Then, the fixed permanent magnets 3 and 4 having a large diameter and a short length are positioned on both sides of the housing 1. By doing so, a vibration generator having a short length can be obtained as a result.
  • the operation principle of the vibration generator according to the first embodiment will be described with reference to FIGS. 4A to 8.
  • the coil 6 is not energized by a pulse, and when the coil 6 is turned off, the movable permanent magnet 5 is fixed to the magnetic flux of the movable permanent magnet 5 and the fixed permanent magnets disposed so as to face both poles. It is located where the magnetic fluxes 3 and 4 are balanced [Position 1 in FIGS. 4A and 6].
  • the horizontal axis indicates the position of the permanent magnet 5, and the intersection with the vertical axis, that is, the zero point indicates the position where the movable permanent magnet 5 balances when the coil is turned off.
  • the vertical axis indicates the force that the movable permanent magnet 5 receives.
  • Curve A represents the force that the movable permanent magnet 5 receives from the magnetic field of the coil 6.
  • Curve B shows the force that the movable permanent magnet 5 receives from the magnetic field of the fixed permanent magnets 3 and 4 when the coil is turned off.
  • Curve C shows the force that the movable permanent magnet 5 receives from the magnetic field of the coil and the magnetic field of the fixed permanent magnet when the coil is ON.
  • the movable permanent magnet 5 When the movable permanent magnet 5 is present at the position shown in FIG. 4A, a pulse is applied to the coil 6 and when the coil 6 is turned on, the magnetic flux generated in the coil 6 causes the magnetic flux to be out of balance. Therefore, the movable permanent magnet 5 receives a force to the right at the position shown in FIG. 4A, and moves to a position where the magnetic flux is balanced (position ⁇ in FIGS. 4B and 6) with kinetic energy.
  • the movable permanent magnet 5 moves to the position ⁇ [FIG. 5B] in FIG. 7 where the potential energy S 3 is consumed. At this time, the potential energy S 3 of the movable permanent magnet 5 is used for the potential energy S 4 for returning to the position 1 in FIG. 7 and the energy for moving the housing 1.
  • the movable permanent magnet 5 repeats the reciprocating motion while increasing the energy, and the energy for moving the housing 1 increases accordingly. This energy saturates at a certain point and performs stable oscillation. Thus, the movable permanent magnet 5 vibrates in the housing 1.
  • FIG. 9 is an external perspective view of a vibration generator according to the second embodiment of the present invention.
  • FIG. 10 is an internal structural diagram showing the vibration generator of FIG. 9 in a partially cutaway manner.
  • FIG. 11 is a cross-sectional view of the vibration generator shown in FIG.
  • the vibration generator according to the second embodiment includes a housing 1 which is a cylindrical tube having an inner space 2, a fixed permanent magnet 3 fixed to one end of the inner space 2 of the housing 1. , A fixed permanent magnet 4 fixed to the other end of the inner space portion 2, a movable permanent magnet 5 movably housed between the fixed permanent magnets 3, 4 of the inner space portion 2, and an outer periphery of the housing 1.
  • a terminal 8 for energizing the battery.
  • the difference between the vibration generator according to the second embodiment and the vibration generator according to the first embodiment is that the movable permanent magnet 5 is connected to two permanent magnets 5a and 5b by combining them. And a non-magnetic joining member 5c which is formed in an intended manner.
  • the inner diameter of the housing 1 is the same, and the outer circumference has a larger outer diameter at the portion where the drive coil 6 is wound, but this may be the same as in the first embodiment.
  • the vibration generator when the pulse signal is supplied from the pulse power source 7 to the drive coil 6 when the movable permanent magnet 5 is present at the position shown in FIG. 11, the left side of the drive coil 6 The N pole and the S pole are on the right.
  • the movable permanent magnet 5 that is moving to the right in response to the fixed permanent magnet 4 before energization moves the S pole of the permanent magnet 5 b by the N pole of the electromagnetic coil 6 and moves to the right. Since the energization by the pulse signal of the pulse power supply 7 is immediately turned off, the sucked movable permanent magnet 5 moves rightward as it is.
  • FIG. 12 is a diagram showing a housing of a vibration generator according to a third embodiment of the present invention.
  • the basic configuration as a vibration generator is the same as in the first embodiment.
  • the feature of the vibration generator according to this embodiment is that the shape of the housing 1 is an arc shape in a side view using a part of a donut-shaped housing. As a result, not only the horizontal direction but also the vertical direction in the figure can be set as the vibration range.
  • FIG. 13 is a view showing a vibration generator according to a fourth embodiment of the present invention.
  • the feature of the vibration generator according to the fourth embodiment is that a coil is used instead of the fixed permanent magnet of the vibration generator according to the first embodiment.
  • a second coil 13 and a third coil 14 are provided at both ends of the housing 1. It differs from that of the first embodiment in that a movable permanent magnet 5 is provided in the inner space 2 of the housing 1 and a coil 6 is provided on the outer periphery of the housing 1 and is energized and excited by a pulse generator 7. There is no place.
  • the second and third coils 13 and 14 are continuously energized by the DC power supply 10.
  • the second coil 13 performs the same function as the fixed permanent magnet 3
  • the third coil 14 performs the same function as the fixed permanent magnet 4.
  • the vibration action may be considered to be similar to that of the first embodiment.
  • the pulse signal applied to the coil 6 is a voltage of 0 (V) to (V) as shown in FIG.
  • a magnetic flux corresponding to the voltage (V) is generated in the coil 6, and the magnetic flux ⁇ leaks outside.
  • the magnetic information on the magnetic card may be destroyed.
  • shield 15 it is conceivable to cover the entire outer periphery of housing 1 with shield 15 as shown in Fig. 15. Can be In this case, a thick shield plate must be used to shield the large magnetic flux, resulting in a large vibration generator. This is inconsistent with the demand for smaller mobile terminals equipped with vibration generators, and the need for smaller vibration generators accordingly.
  • the pulse voltage applied to the drive coil of the vibration generator according to each of the above-described embodiments is changed from the waveform shown in FIG. 14 to the waveform of the voltage O Ei iV).
  • the alternating voltage in Fig. 16 that changes from l / S Ei to l / 2 Ei may be used.
  • the amount of magnetic flux generated from coil 6 is 1/2 of that in the case of voltage (V). Accordingly, the thickness of the shield plate 15 can be reduced, and the vibration generator can be downsized.
  • the movable permanent magnet 5 When the coil 6 is OFF, the movable permanent magnet 5 is located where the magnetic flux of the movable permanent magnet 5 and the magnetic flux of the fixed permanent magnets 3 and 4 arranged to oppose both poles are balanced (Fig. 17). A and position i in Figure 19).
  • FIG. 22 is a sectional view of a main part of a vibration generator according to a sixth embodiment of the present invention
  • FIG. 23 is a diagram showing the side surface portion
  • FIG. 24 is a diagram showing the same end surface portion.
  • the vibration generator includes a spool 1 which is a cylindrical cylinder having a passage 2 which is an inner space therein, a movable permanent magnet 5 movable in the passage 2 of the spool 1, and a periphery of the spool 1.
  • a magnetic field that gives an attractive force to one magnetic pole side (here, the N pole side) of the movable permanent magnet 5 is generated by applying a pulse signal.
  • Coils 6a and 6b which are magnetic field generating means for generating a magnetic field that gives a repulsive force to the other magnetic pole side (here, the S pole side), and movable permanent magnets provided at both ends of the passage 2 5 is provided with fixed permanent magnets 3 and 4 which are repulsive means for applying a repulsive force to the proximity of 5, and ventilation holes 21 and 22 for communicating the passage 2 with the outside of the spool 1.
  • the movable permanent magnet 5 has a columnar shape, and the left side of the drawing has an N pole and the right side has an S pole.
  • holding plates 3 a and 4 a of permanent magnets are fixed so as to close the openings at both ends of the passage 2.
  • Disk-shaped fixed permanent magnets 3 and 4 are fixed to the holding plates 3 a and 4 a so as to face the movable permanent magnets 5.
  • the fixed permanent magnet 3 has an S pole on the left and an N pole on the right.
  • the fixed permanent magnet 4 has an S pole on the left and an N pole on the right.
  • the magnetic poles of the movable permanent magnet 5 and the fixed permanent magnets 3 and 4 are set so as to repel each other. Of course, the magnetic poles may be opposite to those shown in the figure.
  • the coils 6a, 6b are wound around bobbin equivalent portions on both sides of the center of the spool 1, but the winding directions are opposite to each other and are connected in series.
  • the coils 6 a and 6 b are connected to a pair of coil terminals 23 inserted into a through hole 20 formed in the center of the spool 1. Therefore, a pulse signal is supplied to the coils 6a and 6b through the coil terminals 23.
  • an N-pole magnetic field is generated on the left side of the coil 6b and an S-pole magnetic field is generated on the right side, while an S-pole magnetic field is generated on the left side of the coil 6a.
  • a magnetic field is generated, and a magnetic field of N pole is generated on the right side. Therefore, an attractive force is applied to the N pole side of the movable permanent magnet 5 and a repulsive force is applied to the S pole side.
  • the ventilation holes 21 and 22 are provided at both ends of the passage 2 and open from the outer peripheral surface (side peripheral surface) of the spool 1 to the outside of the spool 1.
  • the spool 1 is provided near the fixed permanent magnets 3 and 4 for ventilation of a diameter larger than the diameter of the passage 2. It has passages 2a and 2b.
  • the ventilation holes 21 and 22 communicate with the ventilation passages 2'a and 2b.
  • four vent holes 21 and 22 are provided at equal angle (90 °) intervals. Accordingly, the passage 2 communicates with the outside of the spool 1 through the ventilation passages 2a and 2b and the ventilation holes 21 and 22 at both ends.
  • a switch 30 equivalently indicates ON / OFF of the pulse signal.
  • switch 30 When switch 30 is ON, it indicates that the pulse signal is being supplied.
  • the pulse signal is, for example, a voltage OE ⁇ V) as shown in FIG. 14 and has the same ON period and OFF period.
  • the switch 30 is normally OFF as shown in FIG. Therefore, based on the relationship between the magnetic poles of the movable permanent magnet 5 and the magnetic poles of the fixed permanent magnets 3 and 4 shown in FIG.
  • the switch 30 is turned on as shown in FIG. 26, as described above, the magnetic field of the N pole is generated on the left side of the coil 6 and the S pole is generated on the right side, while the S pole is generated on the left side of the coil 6a and the magnetic field is generated on the right side.
  • An N-pole magnetic field is generated.
  • the magnetic flux directions of the magnets 3, 4, and 5 are in the lower arrow direction
  • the magnetic flux directions of the coils 6a and 6b are in the upper arrow direction.
  • the movable permanent magnet 5 and the fixed permanent magnet 4 have N poles facing each other. Therefore, when the movable permanent magnet 5 approaches the fixed permanent magnet 4, the movable permanent magnet 5 moves rightward due to the repulsive force as shown in FIG. And movable eternal When the permanent magnet 5 approaches the fixed permanent magnet 3, the S poles of the movable permanent magnet 5 and the fixed permanent magnet 3 face each other, so that the movable permanent magnet 5 moves to the left due to the repulsive force. When the movable permanent magnet 5 reaches almost the center of the passage 2, the switch 30 is turned on again, and the movable permanent magnet 5 is accelerated to the left as described above. By repeating the movement of the movable permanent magnet 5, vibration is amplified and generated, and the entire vibration generator vibrates.
  • the movable permanent magnet 5 reciprocates, air enters and exits between the passage 2 and the outside of the spool 1 through the ventilation holes 21 and 22, so that the movable permanent magnet 5 is less likely to receive air resistance and moves smoothly. I do. That is, when the movable permanent magnet 5 moves to the left side, the left side of the passage 2 with the movable permanent magnet 5 interposed therebetween tends to have a positive pressure, and the right side has a negative pressure. However, the air on the left side of the passage 2 flows out of the spool 1 through the ventilation hole 21, and the air on the right side of the passage 2 flows out of the spool 1 through the ventilation hole 22. When the movable permanent magnet 5 moves to the right, the opposite effect occurs.
  • ventilation holes 21 and 22 are provided at both ends of the passage 2. For this reason, for example, as compared with the case where the movable permanent magnet 5 is provided only on one end side, the movable permanent magnet 5 is less susceptible to air resistance in the forward path and the return path, and the magnetic efficiency for the movable permanent magnet 5 is further improved. Further, the ventilation holes 21 and 22 are provided in the ventilation passages 2 a and 2 b having a diameter larger than the diameter of the passage 2. For this reason, air can flow in and out more efficiently hydrodynamically than, for example, a ventilation passage having a diameter smaller than the diameter of the passage 2.
  • FIG. 29 has the same structure as FIG. 28, and operates in the same manner.
  • the movable permanent magnet 5 When one coil is used, the movable permanent magnet 5 The force received is as shown by curve A in Figure 6. As shown in FIG. 6, the force received by the movable permanent magnet 5 is largest at the end position on the left side from the point 0, and decreases on the right side from the point 0. Further, beyond the position ⁇ in FIG. 6, the magnetic field of the coil exerts a force in a direction that hinders the driving of the movable permanent magnet 5. For this reason, on the left side of the point 0, the energy applied to the movable permanent magnet 5 due to the ON / OFF of the coil greatly increases. On the right side of the zero point, the energy applied to the movable permanent magnet 5 does not increase much.
  • the force that the movable permanent magnet 5 receives from the magnetic field of the coil shown on the left side of the curve A at point 0 is mainly used (that is, the pole surface on one side of the movable permanent magnet 5). Can utilize the magnetic flux).
  • two coils as shown in Fig. 29 (similar to Fig. 22)
  • two coils 6a are used so that the magnetic fluxes of the adjacent coils 6a and 6b face each other.
  • 6b the force received by the movable permanent magnet 5 from the magnetic field of the coil becomes as shown by the curve A in FIG.
  • the force received by the movable permanent magnet 5 does not decrease as shown by the curve A in FIG.
  • the energy applied to the movable permanent magnet 5 by turning on and off the coil is large on the left and right sides of the zero point, and the force received by the movable permanent magnet 5 from the magnetic field of the coil can be used effectively (that is, , The pole faces of the movable permanent magnet 5 are available). Therefore, a greater force can be obtained than when one coil is used.
  • FIG. 31 is a sectional view of a main part of a vibration generator according to a seventh embodiment of the present invention
  • FIG. 32 is a side view thereof
  • FIG. 32 is an end view thereof.
  • This vibration generator has the same structure as that shown in FIG. 22 except that the form of the ventilation holes 21 and 22 is different. That is, the ventilation holes 21 and 22 do not open from the outer peripheral surface of the spool 1 but hold the fixed permanent magnet.
  • the holding plates 3a and 4a open to the outside of the spool 1.
  • the air holes 21 and 22 here have a slit shape formed at equal angular intervals as shown in FIG.
  • the air inflow / outflow action caused by the reciprocating motion of the movable permanent magnet 5 is the same as that in the sixth embodiment.
  • FIG. 34 is a sectional view showing a principal part of a vibration generator according to an eighth embodiment of the present invention.
  • FIG. 35 shows the same side view
  • FIG. 36 shows the same end view.
  • This vibration generator also differs only in the form of the ventilation holes 21 and 22.
  • the ventilation holes 21 and 22 are open from the outer peripheral surface of the spool 1, and are not circular as shown in FIG. 23 but are squares having a large opening area. The air entry / exit action is the same as above.
  • the pulse signals applied to the coils 4 and 5 are as shown in FIG. 0 (V) to E, (V).
  • the leakage of the magnetic flux to the outside becomes large for the same reason as when one coil is used as the drive coil, and there is a possibility that the magnetic information of the magnetic card is destroyed.
  • portable terminals equipped with vibration generators are being miniaturized more and more, which contradicts the demand for smaller vibration generators.
  • the pulse voltage applied to the vibration generator of each of the sixth, seventh, and eighth embodiments obtains the same amount of vibration as the waveform of voltage 0 ⁇ E i (V) as shown in FIG. Therefore, the alternating voltage may be changed from / to E E, (the ninth embodiment).
  • the amount of magnetic flux generated from the coils 6a and 6b is 1/2 that of the case of 0 ⁇ ⁇ , (V).
  • Shield board 1 5 accordingly The thickness can be reduced and the vibration generator can be downsized.
  • the application of the pulse signal to the drive coil is performed by receiving a signal based on a call in the case of a mobile phone or the like.
  • the pulse signal given to the drive coil in each of the above embodiments has a duty ratio of 1: 1 as shown in FIG. 14, and has a constant frequency. If the frequency is increased in each of the above-mentioned vibration generators, the vibration energy will increase, but the maximum vibration will be obtained at about 130 Hz from the relationship with the amount of human perceived vibration.
  • these vibration generators have a maximum continuous response frequency and a maximum self-starting frequency.
  • the maximum continuous response frequency is the frequency of the drive voltage pulse for obtaining the so-called maximum vibration amount, which is about 130 Hz for this vibration generator. Exceeding or rapidly increasing the frequency will cause loss of synchronism and the amount of vibration will drop sharply.
  • the maximum self-starting frequency is the frequency at which step-out does not occur even if driving is suddenly started at that frequency. Naturally, only vibration lower than the maximum continuous response frequency vibration can be obtained. In this vibration generator, it is about 110Hz.
  • the frequency of the pulse signal applied to the drive coil 6 is 105 Hz as shown in FIG. 39, and the next five pulses are 120 Hz as shown in FIG. Then, the next 5 pulses are at 125 Hz, and the continuous oscillation may be 130 Hz at the end, and the frequency may be increased step by step.
  • the vibration generator according to the present invention may be applied to the vibration generator of another embodiment regardless of the above-described embodiment.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

L'invention concerne un générateur de vibrations peu onéreux qui ne consomme pas beaucoup de courant électrique, est peu encombrant et possède une grande longévité. Il comporte des aimants permanent fixes (3 et 4) assujettis aux deux extrémités d'une enceinte cylindrique (1), un aimant permanent mobile (5) logé dans la section creuse (2) de l'enceinte (1), et une bobine d'excitation (6) disposée sur la circonférence extérieure de l'enceinte (1) pour créer un magnétisme lorsque la bobine (6) est excitée avec du courant électrique provenant d'une source de courant pulsé (7). Le générateur vibre lorsqu'une force d'entraînement engendrée par les variations du magnétisme produit par la bobine (6) et les flux magnétiques émanant des aimants permanents fixes (3 et 4) et de l'aimant permanent mobile (5) est appliquée à l'élément mobile (5) de l'aimant permanent mobile (5) pour permettre à ce dernier de décrire un mouvement alternatif dans la section creuse (2) de l'enceinte (1).
PCT/JP1997/003886 1996-10-30 1997-10-27 Generateur de vibrations WO1998019383A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP28827396 1996-10-30
JP8/288273 1996-10-30
JP8/347184 1996-12-26
JP34718496 1996-12-26
JP18628697 1997-07-11
JP9/186286 1997-07-11
JP27026897 1997-10-03
JP9/270268 1997-10-03

Publications (1)

Publication Number Publication Date
WO1998019383A1 true WO1998019383A1 (fr) 1998-05-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/003886 WO1998019383A1 (fr) 1996-10-30 1997-10-27 Generateur de vibrations

Country Status (1)

Country Link
WO (1) WO1998019383A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003065552A2 (fr) * 2002-01-30 2003-08-07 Koninklijke Philips Electronics N.V. Dispositif pour produire des vibrations mecaniques
WO2003065553A2 (fr) * 2002-01-30 2003-08-07 Koninklijke Philips Electronics N.V. Dispositif pour produire des vibrations mecaniques
WO2010135383A3 (fr) * 2009-05-18 2011-02-24 Resonant Systems, Inc. Module de vibration résonant linéaire
US8684980B2 (en) 2010-07-15 2014-04-01 Corinthian Ophthalmic, Inc. Drop generating device
US8733935B2 (en) 2010-07-15 2014-05-27 Corinthian Ophthalmic, Inc. Method and system for performing remote treatment and monitoring
US8936021B2 (en) 2003-05-20 2015-01-20 Optimyst Systems, Inc. Ophthalmic fluid delivery system
US9087145B2 (en) 2010-07-15 2015-07-21 Eyenovia, Inc. Ophthalmic drug delivery
WO2016114384A1 (fr) * 2015-01-16 2016-07-21 日本電産コパル株式会社 Actionneur vibrant
WO2016131032A1 (fr) * 2015-02-13 2016-08-18 Resonant Systems, Inc. Contrôleur de modules résonants oscillants
JP2016150333A (ja) * 2015-02-19 2016-08-22 日本電産コパル株式会社 振動アクチュエータ
US10154923B2 (en) 2010-07-15 2018-12-18 Eyenovia, Inc. Drop generating device
US10639194B2 (en) 2011-12-12 2020-05-05 Eyenovia, Inc. High modulus polymeric ejector mechanism, ejector device, and methods of use
CN112797112A (zh) * 2021-01-08 2021-05-14 温州大学 一种半主动控制的磁性液体动力吸振器
US11938056B2 (en) 2017-06-10 2024-03-26 Eyenovia, Inc. Methods and devices for handling a fluid and delivering the fluid to the eye

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JPS5494812U (fr) * 1977-12-19 1979-07-05
JPS6270675U (fr) * 1985-10-23 1987-05-06
JPH0451077U (fr) * 1990-08-30 1992-04-30
JPH06315255A (ja) * 1993-04-26 1994-11-08 Tdk Corp 可動磁石式アクチュエータ

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JPS5494812U (fr) * 1977-12-19 1979-07-05
JPS6270675U (fr) * 1985-10-23 1987-05-06
JPH0451077U (fr) * 1990-08-30 1992-04-30
JPH06315255A (ja) * 1993-04-26 1994-11-08 Tdk Corp 可動磁石式アクチュエータ

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003065553A2 (fr) * 2002-01-30 2003-08-07 Koninklijke Philips Electronics N.V. Dispositif pour produire des vibrations mecaniques
WO2003065553A3 (fr) * 2002-01-30 2003-11-13 Koninkl Philips Electronics Nv Dispositif pour produire des vibrations mecaniques
WO2003065552A3 (fr) * 2002-01-30 2003-11-13 Koninkl Philips Electronics Nv Dispositif pour produire des vibrations mecaniques
WO2003065552A2 (fr) * 2002-01-30 2003-08-07 Koninklijke Philips Electronics N.V. Dispositif pour produire des vibrations mecaniques
US8936021B2 (en) 2003-05-20 2015-01-20 Optimyst Systems, Inc. Ophthalmic fluid delivery system
WO2010135383A3 (fr) * 2009-05-18 2011-02-24 Resonant Systems, Inc. Module de vibration résonant linéaire
US8093767B2 (en) 2009-05-18 2012-01-10 Brian Marc Pepin Linear-resonant vibration module
US8684980B2 (en) 2010-07-15 2014-04-01 Corinthian Ophthalmic, Inc. Drop generating device
US8733935B2 (en) 2010-07-15 2014-05-27 Corinthian Ophthalmic, Inc. Method and system for performing remote treatment and monitoring
US9087145B2 (en) 2010-07-15 2015-07-21 Eyenovia, Inc. Ophthalmic drug delivery
US11839487B2 (en) 2010-07-15 2023-12-12 Eyenovia, Inc. Ophthalmic drug delivery
US11398306B2 (en) 2010-07-15 2022-07-26 Eyenovia, Inc. Ophthalmic drug delivery
US11011270B2 (en) 2010-07-15 2021-05-18 Eyenovia, Inc. Drop generating device
US10073949B2 (en) 2010-07-15 2018-09-11 Eyenovia, Inc. Ophthalmic drug delivery
US10154923B2 (en) 2010-07-15 2018-12-18 Eyenovia, Inc. Drop generating device
US10839960B2 (en) 2010-07-15 2020-11-17 Eyenovia, Inc. Ophthalmic drug delivery
US10639194B2 (en) 2011-12-12 2020-05-05 Eyenovia, Inc. High modulus polymeric ejector mechanism, ejector device, and methods of use
US10646373B2 (en) 2011-12-12 2020-05-12 Eyenovia, Inc. Ejector mechanism, ejector device, and methods of use
WO2016114384A1 (fr) * 2015-01-16 2016-07-21 日本電産コパル株式会社 Actionneur vibrant
WO2016131032A1 (fr) * 2015-02-13 2016-08-18 Resonant Systems, Inc. Contrôleur de modules résonants oscillants
JP2016150333A (ja) * 2015-02-19 2016-08-22 日本電産コパル株式会社 振動アクチュエータ
US11938056B2 (en) 2017-06-10 2024-03-26 Eyenovia, Inc. Methods and devices for handling a fluid and delivering the fluid to the eye
CN112797112A (zh) * 2021-01-08 2021-05-14 温州大学 一种半主动控制的磁性液体动力吸振器

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