WO2016167297A1 - Moteur à vibration linéaire - Google Patents

Moteur à vibration linéaire Download PDF

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Publication number
WO2016167297A1
WO2016167297A1 PCT/JP2016/061943 JP2016061943W WO2016167297A1 WO 2016167297 A1 WO2016167297 A1 WO 2016167297A1 JP 2016061943 W JP2016061943 W JP 2016061943W WO 2016167297 A1 WO2016167297 A1 WO 2016167297A1
Authority
WO
WIPO (PCT)
Prior art keywords
mover
guide shaft
vibration motor
linear vibration
movable element
Prior art date
Application number
PCT/JP2016/061943
Other languages
English (en)
Japanese (ja)
Inventor
慎 小田島
昇 生川
片田　好紀
栞 石井
Original Assignee
日本電産コパル株式会社
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 日本電産コパル株式会社 filed Critical 日本電産コパル株式会社
Priority to CN201680022133.6A priority Critical patent/CN107534375B/zh
Publication of WO2016167297A1 publication Critical patent/WO2016167297A1/fr

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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
    • 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
    • H02K33/12—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems

Definitions

  • the present invention relates to a linear vibration motor that generates reciprocal vibration by an input signal.
  • Vibration motors are widely used as devices that are built in portable electronic devices and transmit signal generation such as incoming calls and alarms to mobile users by vibration.
  • vibration motors have attracted attention as devices for realizing haptics (skin sensation feedback) in human interfaces such as touch panels.
  • a linear vibration motor that can generate a relatively large vibration by linear reciprocating vibration of the mover is known.
  • a conventional linear vibration motor is provided with a weight and a magnet on the mover side, and a Lorentz force acting on the magnet by energizing a coil provided on the stator side serves as a driving force, which is elastically supported along the vibration direction.
  • the child is reciprocally vibrated (see Patent Document 1 below).
  • vibration motors equipped with them are required to be further reduced in size and thickness.
  • an electronic device equipped with a flat panel display unit such as a smartphone
  • the space in the device in the thickness direction orthogonal to the display surface is limited. is there.
  • the magnet and the weight are The mover provided is made flat, and the thickness is reduced while ensuring the magnet volume and the gravity of the weight.
  • the flat shaped mover is shaped so that the side part is easy to come into contact with the surrounding frame body by the rotation, so that a contact sound is generated.
  • stable operation cannot be obtained.
  • the prior art provides two guide shafts to suppress rotation of the movable element around the vibration axis, and realizes stable linear vibration.
  • two guide shafts it is necessary to ensure the parallelism of the two guide shafts, and high accuracy is required for assembly, and there is a problem that high productivity is difficult to obtain.
  • the present invention is an example of a problem to deal with such a problem.
  • the linear vibration motor can be made thin, and even when the mover is flattened, the rotation of the mover is suppressed, the generation of contact noise is suppressed, and stable vibration is obtained. It is an object of the present invention to ensure high productivity by not using simple parts.
  • the linear vibration motor of the present invention has the following configuration.
  • a mover including a magnetic pole part and a weight part, a frame body that supports the mover in a freely reciprocating manner, a coil that is fixed to the frame body and applies a driving force to the magnetic pole part, and a vibration of the mover
  • a guide shaft that regulates in a single axial direction, and an elastic member that is provided between the frame and the movable element and elastically deforms by reciprocating vibration of the movable element, and the movable element is an axis of the guide shaft.
  • the width in the direction intersecting the direction is a rectangular shape equal to or greater than the thickness in the direction intersecting the axial direction of the guide shaft, and the elastic member is a plate width along the thickness direction of the mover
  • a linear vibration motor comprising: a leaf spring having:
  • plate spring has the rigidity with respect to the displacement along the thickness direction by having the plate
  • the mover can be prevented from rotating around the guide shaft and coming into contact with the frame or the like, and stable reciprocating vibration without contact sound can be obtained. it can.
  • stable vibration can be obtained without using highly accurate parts.
  • high-precision assembly is not required, high productivity can be obtained.
  • FIG. 1 is an explanatory diagram showing an overall configuration of a linear vibration motor according to a first embodiment of the present invention (FIG. It is explanatory drawing (plan view of the state except a cover) which shows the internal structure of the linear vibration motor which concerns on 1st Embodiment of this invention.
  • FIG. 6 is an explanatory diagram (a is a plan view and (b) is a cross-sectional view taken along line AA) showing a modification of the first embodiment of the present invention. It is explanatory drawing (plan view of the state which removed the cover body) which shows the internal structure of the modification of 1st Embodiment of this invention.
  • FIG. 1 is an explanatory diagram showing an overall configuration of a linear vibration motor according to a first embodiment of the present invention (FIG. It is explanatory drawing (plan view of the state except a cover) which shows the internal structure of the linear vibration motor which concerns on 1st Embodiment of this invention.
  • FIG. 6 is an explanatory diagram (a is a plan
  • FIG. 6 is an explanatory diagram ((a) is a plan view and (b) is an AA cross-sectional view) illustrating an overall configuration of a linear vibration motor according to a second embodiment of the present invention.
  • It is explanatory drawing (plan view of the state except a cover body) which shows the internal structure of the linear vibration motor which concerns on 2nd Embodiment of this invention.
  • It is explanatory drawing ((a) is a top view, (b) is AA sectional drawing) which shows the whole structure of the linear vibration motor which concerns on 3rd Embodiment of this invention.
  • It is explanatory drawing (plan view of the state except a cover body) which shows the internal structure of the linear vibration motor which concerns on 3rd Embodiment of this invention.
  • the X direction indicates the vibration direction of the mover
  • the Y direction indicates the width direction of the mover perpendicular to the X direction
  • the Z direction indicates the thickness direction of the mover perpendicular to the X direction.
  • the linear vibration motor 1 includes a movable element 10 including a magnetic pole part 2 and a weight part 3 as a common part in the following embodiments, a frame body 4 that supports the movable element 10 so as to freely reciprocate, and a frame body 4.
  • the coil 5 is fixed to the magnetic pole part 2 and applies a driving force to the magnetic pole part 2.
  • the guide shaft 6 restricts the vibration of the movable element 10 in one axis direction.
  • an elastic member 7 that is elastically deformed by reciprocating vibration.
  • the mover 10 includes a movable frame 11 that also serves as the weight portion 3, and a pair of magnets 2 ⁇ / b> A and 2 ⁇ / b> B are fixed to the movable frame 11.
  • the mover 10 has a rectangular shape whose width in the Y direction in the figure is greater than or equal to the thickness in the Z direction in the figure. Specifically, it has a flat shape in which the width in the Y direction in the figure is larger than the thickness in the Z direction in the figure.
  • the magnetic pole portion 2 includes a pair of magnets 2A, 2B and a back yoke 2S, and the pair of magnets 2A, 2B are magnetized in opposite directions along the Z direction (thickness direction of the mover 10).
  • the rear surface is connected to the rear yoke 2S.
  • the frame body 4 includes a case frame 40 in which the mover 10 is accommodated and a lid frame 41 that covers the case frame 40. Both ends of one guide shaft 6 are supported in the case frame 40, and the mover 10 has an insertion portion 10 ⁇ / b> A through which the guide shaft 6 is inserted and a bearing 12. It is slidably supported along.
  • the coil 5 is fixed to the cover frame 41 of the frame body 4 via a flexible substrate 50 on the surface facing the case frame 40.
  • the coil 5 is wound along a surface defined by the width direction of the mover 10 (Y direction in the drawing) and the axial direction of the guide shaft 6 (X direction in the drawing), and a pair of the cover 5 and the lid frame 41 along the surface. Between the magnets 2A and 2B.
  • the elastic member 7 disposed between the mover 10 and the frame 4 includes a pair of coil springs 70A and 70B and a pair of leaf springs 71A and 71B.
  • the pair of coil springs 70A and 70B are arranged coaxially with the guide shaft 6, and the pair of plate springs 71A and 71B have a plate width along the thickness direction (Z direction in the drawing) of the mover 10, and have one end portion. Is attached to the side surface of the frame 4 (case frame 40), and the other end is attached to the side surface of the mover 10 (movable frame 11).
  • Such a linear vibration motor 1 supplies the coil 5 with a drive current having a resonance frequency determined by the weight of the mover 10 and the spring constant of the elastic member 7, so that the mover 10 is uniaxially along the guide shaft 6. Vibrates back and forth. At this time, the leaf springs 71A and 71B are elastically deformed with respect to the vibration along the X direction of the movable element 10, but are rigid with respect to the movement of the movable element 10 in the Z direction. Even if the child 10 tries to rotate around the guide shaft 6, the rotation is restrained by the rigidity of the leaf springs 71A and 71B. Accordingly, it is possible to avoid a problem that the movable element 10 contacts the frame body 4 or the coil 5 and generates a contact sound during the reciprocating vibration of the movable element 10.
  • the linear vibration motor 1 is arranged at a position where the guide shaft 6 is shifted from the center of gravity of the mover 10 to one side, and the leaf springs 71A, 71B are arranged at a position shifted from the center of gravity to the other side.
  • rotation around the center of gravity of the mover 10 is suppressed by both the guide shaft 6 and the leaf springs 71A and 71B, and a stable planar reciprocating vibration can be realized.
  • a linear vibration motor 1A shown in FIGS. 3 and 4 is a modification of the linear vibration motor 1 shown in FIGS.
  • the pair of magnets 2A and 2B in which the magnetic pole portion 2 is magnetized in the opposite directions along the thickness direction (Z direction in the figure) of the mover 10 and the pair of magnets 2A and 2B are the mover.
  • the counter yoke 2 ⁇ / b> R is arranged with an interval in the thickness direction (Z direction in the figure).
  • the coil 5 is wound along a surface defined in the width direction of the mover 10 (Y direction in the drawing) and the axial direction of the guide shaft 6 (X direction in the drawing), and the opposing yoke 2R and the pair of magnets 2A, It is arrange
  • the coil 5 here is held by a coil holding body 51 and fixed to the frame body 4.
  • such a linear vibration motor 1A is also in contact with the frame 4 and the coil 5 during the reciprocal vibration of the mover 10 due to the rigidity of the leaf springs 71A and 71B. Problems that generate sound can be avoided.
  • the frame 4 is elongated in the X direction (vibration direction), and the mover 10 has a larger width in the Y direction than the thickness in the Z direction. It has a flat shape.
  • the guide shaft 6 has one end fixed to the end of the mover 10 and is disposed so as to protrude in opposite directions from both ends of the mover 10.
  • the frame 4 is provided with a bearing 12 that slidably supports the guide shaft 6, and coil springs 70 ⁇ / b> A and 70 ⁇ / b> B arranged coaxially with the guide shaft 6 are arranged between the movable frame 11 and the frame 4.
  • the magnets 2A and 2B can be arranged in the entire width direction (Y direction) of the mover 10, and the narrow width Even when the movable element 10 is used, a sufficient driving force can be obtained.
  • the linear vibration motor 1C shown in FIGS. 7 and 8 includes a pair of magnets 2C and 2D in which the magnetic pole portion 2 is magnetized in opposite directions along the guide shaft 6, and a spacer yoke 2P disposed therebetween. It has.
  • the coil 5 is wound around the spacer yoke 2P and is fixed to the frame 4 around it.
  • This linear vibration motor 1C also has a single guide shaft 6 but the rigidity of the leaf springs 71A and 71B prevents the mover 10 from rotating around the guide shift 6 so that the mover 10 can be used as the frame 4 or the coil 5. It is possible to avoid a problem that a contact sound is generated by touching the contact.
  • a linear vibration motor 1D shown in FIGS. 9 and 10 is a modification of the linear vibration motor 1C, and the movable element 10 and the frame body 4 are elongated along the vibration direction (X direction in the drawing). According to this, even when the width (Y direction) of the linear vibration motor 1D is reduced to improve the installation space efficiency in the width direction, effective reciprocating vibration can be obtained.
  • FIG. 11 shows a portable information terminal 100 as an example of an electronic device equipped with the linear vibration motor 1 (1A to 1D) according to the embodiment of the present invention.
  • the portable information terminal 100 having the linear vibration motor 1 (1A to 1D) that can obtain a stable vibration and can be thinned and made compact in the width direction is different at the start and end of operations such as an incoming call and an alarm function in a communication function. It can be transmitted to the user with stable vibration that is less likely to generate sound.
  • the portable information terminal 100 pursuing high portability or design can be obtained by making the linear vibration motor 1 (1A to 1D) thin and compact in the width direction.
  • the linear vibration motor 1 (1A to 1D) has a compact shape in which each part is housed in a rectangular parallelepiped frame 4 with a reduced thickness, the space-efficient mobile information terminal 100 has a space efficient. Can be equipped.

Abstract

La présente invention réduit au minimum la génération d'un son de contact en réduisant au minimum la rotation d'un élément mobile et obtient une vibration stable même lorsque l'élément mobile est conçu de manière à avoir une forme plate. Un moteur à vibration linéaire 1 est pourvu : d'un élément mobile 10 doté d'un pôle magnétique 2 et d'une section de poids 3 ; d'un cadre 4 qui supporte l'élément mobile 10 de manière à être capable de vibration de va-et-vient ; d'une bobine 5 qui est fixe par rapport au cadre 4 et qui applique une force d'entraînement au pôle magnétique 2 ; d'un arbre de guidage 6 qui limite la vibration de l'élément mobile 10 à une direction axiale ; et d'un élément élastique 6 qui est disposé entre le cadre 4 et l'élément mobile 10 et qui se déforme élastiquement en conséquence de la vibration de va-et-vient de l'élément mobile 10. L'élément mobile 10 a une forme plate dont la largeur dans une direction croisant la direction axiale de l'arbre de guidage 6 est supérieure à l'épaisseur dans une direction croisant la direction axiale de l'arbre de guidage 6. L'élément élastique 7 est pourvu de ressorts à lames 71A, 71B ayant des largeurs de lame qui suivent le sens de l'épaisseur de l'élément mobile 10.
PCT/JP2016/061943 2015-04-17 2016-04-13 Moteur à vibration linéaire WO2016167297A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680022133.6A CN107534375B (zh) 2015-04-17 2016-04-13 线性振动马达

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015085459A JP2016208607A (ja) 2015-04-17 2015-04-17 リニア振動モータ
JP2015-085459 2015-04-17

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WO2016167297A1 true WO2016167297A1 (fr) 2016-10-20

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JP (1) JP2016208607A (fr)
CN (1) CN107534375B (fr)
WO (1) WO2016167297A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018180946A1 (fr) * 2017-03-30 2018-10-04 日本電産サンキョー株式会社 Actionneur
WO2018180949A1 (fr) * 2017-03-30 2018-10-04 日本電産サンキョー株式会社 Actionneur
WO2018180945A1 (fr) * 2017-03-30 2018-10-04 日本電産サンキョー株式会社 Actionneur
WO2018180947A1 (fr) * 2017-03-30 2018-10-04 日本電産サンキョー株式会社 Actionneur
WO2018180948A1 (fr) * 2017-03-30 2018-10-04 日本電産サンキョー株式会社 Actionneur
US20230086204A1 (en) * 2021-09-22 2023-03-23 Apple Inc. Haptic Engine Based on an Angular Resonant Actuator

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JP6512383B2 (ja) * 2017-04-27 2019-05-15 株式会社村田製作所 アクチュエータ
JP6982486B2 (ja) * 2017-12-14 2021-12-17 日本電産コパル株式会社 リニア振動モータ
CN109905007B (zh) * 2019-03-11 2020-11-13 浙江省东阳市东磁诚基电子有限公司 一种柱状振动马达
JP7261699B2 (ja) * 2019-08-28 2023-04-20 アルプスアルパイン株式会社 振動発生装置
CN113708590A (zh) * 2020-05-22 2021-11-26 北京小米移动软件有限公司 线性振动马达、触觉反馈振动模组、控制方法及装置

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US20110133577A1 (en) * 2008-08-18 2011-06-09 In Ho Lee Horizontal linear vibration device
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JP5815264B2 (ja) * 2011-03-31 2015-11-17 日本電産コパル株式会社 振動アクチュエータ
CN202840898U (zh) * 2012-11-23 2013-03-27 宝龙电子集团有限公司 线性振动马达
JP6038747B2 (ja) * 2013-08-29 2016-12-07 日本電産コパル株式会社 振動アクチュエータ

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US20110133577A1 (en) * 2008-08-18 2011-06-09 In Ho Lee Horizontal linear vibration device
JP2011097747A (ja) * 2009-10-29 2011-05-12 Nidec Copal Corp 振動アクチュエータ
JP2011205870A (ja) * 2010-03-26 2011-10-13 Sanyo Electric Co Ltd 振動モータ

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Publication number Priority date Publication date Assignee Title
WO2018180946A1 (fr) * 2017-03-30 2018-10-04 日本電産サンキョー株式会社 Actionneur
WO2018180949A1 (fr) * 2017-03-30 2018-10-04 日本電産サンキョー株式会社 Actionneur
WO2018180945A1 (fr) * 2017-03-30 2018-10-04 日本電産サンキョー株式会社 Actionneur
WO2018180947A1 (fr) * 2017-03-30 2018-10-04 日本電産サンキョー株式会社 Actionneur
WO2018180948A1 (fr) * 2017-03-30 2018-10-04 日本電産サンキョー株式会社 Actionneur
CN110495081A (zh) * 2017-03-30 2019-11-22 日本电产三协株式会社 致动器
JPWO2018180948A1 (ja) * 2017-03-30 2020-02-06 日本電産サンキョー株式会社 アクチュエータ
JPWO2018180946A1 (ja) * 2017-03-30 2020-02-06 日本電産サンキョー株式会社 アクチュエータ
JPWO2018180949A1 (ja) * 2017-03-30 2020-02-06 日本電産サンキョー株式会社 アクチュエータ
JPWO2018180947A1 (ja) * 2017-03-30 2020-02-06 日本電産サンキョー株式会社 アクチュエータ
JPWO2018180945A1 (ja) * 2017-03-30 2020-02-06 日本電産サンキョー株式会社 アクチュエータ
CN110495081B (zh) * 2017-03-30 2021-06-25 日本电产三协株式会社 致动器
US11070120B2 (en) 2017-03-30 2021-07-20 Nidec Sankyo Corporation Actuator
US11095200B2 (en) 2017-03-30 2021-08-17 Nidec Sankyo Corporation Actuator
JP7039462B2 (ja) 2017-03-30 2022-03-22 日本電産サンキョー株式会社 アクチュエータ
US11283338B2 (en) 2017-03-30 2022-03-22 Nidec Sankyo Corporation Actuator
JP7039463B2 (ja) 2017-03-30 2022-03-22 日本電産サンキョー株式会社 アクチュエータ
JP7039465B2 (ja) 2017-03-30 2022-03-22 日本電産サンキョー株式会社 アクチュエータ
JP7039464B2 (ja) 2017-03-30 2022-03-22 日本電産サンキョー株式会社 アクチュエータ
US11323015B2 (en) 2017-03-30 2022-05-03 Nidec Sankyo Corporation Actuator
JP7072502B2 (ja) 2017-03-30 2022-05-20 日本電産サンキョー株式会社 アクチュエータ
US11411482B2 (en) 2017-03-30 2022-08-09 Nidec Sankyo Corporation Actuator with two magnetic drive circuits to vibrate a body in two directions
US20230086204A1 (en) * 2021-09-22 2023-03-23 Apple Inc. Haptic Engine Based on an Angular Resonant Actuator
US11936269B2 (en) * 2021-09-22 2024-03-19 Apple Inc. Haptic engine based on angular resonant actuator with pivot axis and mass center that differ

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Publication number Publication date
CN107534375A (zh) 2018-01-02
JP2016208607A (ja) 2016-12-08
CN107534375B (zh) 2020-04-03

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