WO2018092833A1 - 振動アクチュエータ取付構造及び該振動アクチュエータ取付構造を備えた電子機器並びに該振動アクチュエータ取付構造の製造方法。 - Google Patents

振動アクチュエータ取付構造及び該振動アクチュエータ取付構造を備えた電子機器並びに該振動アクチュエータ取付構造の製造方法。 Download PDF

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Publication number
WO2018092833A1
WO2018092833A1 PCT/JP2017/041218 JP2017041218W WO2018092833A1 WO 2018092833 A1 WO2018092833 A1 WO 2018092833A1 JP 2017041218 W JP2017041218 W JP 2017041218W WO 2018092833 A1 WO2018092833 A1 WO 2018092833A1
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WO
WIPO (PCT)
Prior art keywords
vibration
vibration actuator
mounting structure
actuator mounting
specific gravity
Prior art date
Application number
PCT/JP2017/041218
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English (en)
French (fr)
Japanese (ja)
Inventor
慎介 岡安
宗一郎 関田
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 CN201780071084.XA priority Critical patent/CN109963659B/zh
Publication of WO2018092833A1 publication Critical patent/WO2018092833A1/ja

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    • 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

Definitions

  • the present invention relates to a vibration actuator mounting structure in which a vibration actuator is fixed to a vibration object, an electronic device including the vibration actuator mounting structure, and a method for manufacturing the vibration actuator mounting structure.
  • Vibration actuators are widely used as devices that are built into portable electronic devices and transmit signal generation such as incoming calls and alarms to the wearer by vibrations. Has become an indispensable device.
  • vibration actuators have attracted attention as devices for realizing haptics (skin sensation feedback) in human interfaces such as touch panels.
  • haptics skin sensation feedback
  • Various types of such vibration actuators have been developed.
  • the linear vibration actuator has a weight and a magnet on the mover side, and the Lorentz force acting on the magnet becomes a driving force by energizing the coil provided on the stator side, and the mover that is elastically supported along the vibration direction. This is to reciprocate in one axis direction (see, for example, Patent Document 1).
  • the purpose of such a vibration actuator is to make the user perceive various signals by vibration without generating sound.
  • the vibration of the vibration actuator is transmitted to the case and the like. Sound may be generated. Therefore, there is a need for a structure that generates sufficient vibrations by suppressing the generation of noise such as vibration noise.
  • the installation space for vibration actuators is severely limited, and the structure is space-saving and simple. Therefore, it is necessary to devise such a structure.
  • the present invention has the following configuration.
  • a vibration actuator having an outer surface at one end intersecting the vibration direction of the vibrator as a vibration transmission surface, an elastic member in contact with and fixed to the vibration transmission surface, and a specific gravity greater than the elastic member and anti-vibration of the elastic member
  • a vibration actuator mounting structure comprising: a high specific gravity member fixed in contact with a surface on the source side, wherein the surface on the anti-vibration source side of the high specific gravity member is in contact with a vibration object.
  • (A) is a perspective view which shows an example of the vibration actuator attachment structure which concerns on this invention
  • (b) is the longitudinal cross-sectional view which cut
  • It is a top view of the electronic device provided with the same vibration actuator attachment structure, and shows the state which removed the front side panel.
  • It is a principal part longitudinal cross-sectional view which shows the state which is performing the vibration sound pressure measurement about the electronic device provided with the vibration actuator attachment structure.
  • It is a longitudinal cross-sectional view which shows the Example of the vibration actuator attachment structure which concerns on this invention, the comparative example 1, and the comparative example 2, respectively.
  • FIG. 5 is a graph comparing the vibration levels (upper side) and a graph comparing the sound pressure levels (lower side) for the examples of the vibration actuator mounting structure according to the present invention, Comparative Example 1 and Comparative Example 2.
  • FIG. 5 is a graph comparing the vibration levels (upper side) and a graph comparing the sound pressure levels (lower side) for the examples of the vibration actuator mounting structure according to the present invention, Comparative Example 1 and Comparative Example 2.
  • the vibration actuator mounting structure 1 is fixed in contact with the vibration transmission surface 11 ⁇ / b> A having a vibration transmission surface 11 ⁇ / b> A whose outer surface at one end crossing the vibration direction of the vibrator 12 is in contact with the vibration transmission surface 11 ⁇ / b> A.
  • first elastic sheet 20 elastic member
  • second elastic sheet 30 elastic member
  • first elastic sheet 20 fixed in contact with the outer surface of the other end portion of the vibration actuator 10 in the crossing direction
  • first elastic sheet 20 a high specific gravity sheet 40 that is in contact with and fixed to the surface of the first elastic sheet 20 on the side of the anti-vibration source, and the surface of the high specific gravity sheet 40 on the side of the anti-vibration source is the housing 50 ( It is in contact with the vibration object.
  • the vibration actuator 10 includes a vibrator 12 having a magnet 12A and a weight 12B integrally in a hollow long cubic case 11, and a case close to the magnet 12A.
  • 11 includes a drive coil 13 fixed to the inner surface and an elastic member 14 that repels the vibrator 12, and the vibrator 12 reciprocates in the longitudinal direction of the case 11 by a magnetic action when the drive coil 13 is energized.
  • the case 11 is a vibration for transmitting a vibration of the vibrator 12 to the outside by a surface parallel to the vibration direction of the vibrator 12 that is one end face in a direction orthogonal to the longitudinal direction (Z direction in the drawing). It is a transmission surface 11A.
  • the vibration actuator 10 has dimensions of 25 mm in the longitudinal direction (X direction), 6.0 mm in the short direction (Y direction), and 2.5 mm in the thickness direction (Z direction). is there.
  • the vibrator may be vibrated in the short direction of the case 11.
  • the first elastic sheet 20 is a polyurethane sheet having a semi-open cell structure as internal bubbles and a PET film having a thickness of 50 ⁇ m laminated and integrally formed, and the entire thickness is about 0.2 mm.
  • General physical properties of the first elastic sheet 20 are as follows: density 320 kg / m 3 (test method: JIS K6401), 25% compression load 0.011 MPa (test method: JIS K6254), compressive residual strain 2.2% (test method: JIS K6401).
  • the first elastic sheet 20 has an effect of suppressing vibration and transmission of sound pressure due to its elasticity and semi-open cell structure.
  • a product number SR-S-32P manufactured by Roger Sinoac Co., Ltd. can be used for the first elastic sheet 20, for example.
  • the first elastic sheet 20 is formed in a rectangular sheet shape having substantially the same shape as the vibration transmission surface 11A of the vibration actuator 10 (25 mm ⁇ 2.5 mm in the illustrated example), and is bonded to the vibration transmission surface 11A. It is bonded and fixed via an agent.
  • the second elastic sheet 30 is an elastic sheet having a thickness greater than that of the first elastic sheet 20.
  • the second elastic sheet 30 is made of the same material as the first elastic sheet 20 and has a thickness of about 0.6 mm.
  • the sheet material is used.
  • the second elastic sheet 30 is formed in a rectangular sheet shape having substantially the same shape (25 mm ⁇ 2.5 mm in the illustrated example) as the surface opposite to the vibration transmitting surface 11A of the vibration actuator 10, It is bonded and fixed to the surface via an adhesive.
  • the back surface of the touch operation panel A1 (including a touch display) of the electronic device A described later is in contact with the surface of the second elastic sheet 30.
  • the high specific gravity sheet 40 is a sheet material made of a composite material including a metal powder and a synthetic resin material, and has a specific gravity and thickness larger than those of the first elastic sheet 20.
  • the high specific gravity sheet 40 in the illustrated example has a specific gravity of about 11.5, a thickness of about 1 mm, a hardness of 95.6 durometer A (test method: JIS K6253), a tensile strength of 4.4 MP (test method: JIS K6251), at the time of cutting.
  • the elongation is 25% (test method: JIS K6251).
  • the metal powder tungsten powder is used.
  • an elastic synthetic resin material (for example, urethane) such as an elastomer resin is used as the synthetic resin material.
  • the high specific gravity sheet 40 has an effect of attenuating vibration and sound pressure.
  • seat 40 the product name: Nippon Tungsten Co., Ltd. product name: Resin tungsten sheet
  • the high specific gravity sheet 40 is formed in a rectangular sheet shape having substantially the same shape as the first elastic sheet 20 (25 mm ⁇ 2.5 mm in the illustrated example), and is on the anti-vibration source side of the first elastic sheet 20. It is bonded and fixed to the surface of this through an adhesive. Further, the surface on the anti-vibration side of the high specific gravity sheet 40 is bonded and fixed to the inner surface of a casing 50 (vibration object) in the electronic device A described later via an adhesive.
  • the electronic device A is a smartphone according to the illustrated example, and is equipped with a battery pack, a CPU, a storage device, a communication unit, and the like in the housing 50, and the front panel of the housing 50 is touched.
  • the operation panel A1 (see FIG. 3) passes through, and the touch operation panel A1 is exposed to the outside.
  • FIG. 2 shows a state in which the front panel and the touch operation panel A1 are removed.
  • the casing 50 is made of a 7000 series aluminum alloy and is formed in a rectangular box shape having an X direction of about 67 mm, a Y direction of about 138 mm, and a Z direction of about 7 mm.
  • the thickness of each part is 0.9 mm. .
  • the vibration actuator 10, the first elastic sheet 20, the second elastic sheet 30, and the high specific gravity sheet 40 described above are arranged so as to be sandwiched between the bottom surface in the housing 50 and the back surface of the touch operation panel A1 ( (See FIG. 3).
  • the manufacturing method of the vibration actuator mounting structure 1 having the above-described configuration includes a step of bonding the first elastic sheet 20 to the vibration transmission surface 11A of the vibration actuator 10 and a side opposite to the vibration transmission surface 11A of the vibration actuator 10.
  • a step of adhering the second elastic sheet 30 to the surface a step of adhering the high specific gravity sheet 40 to the surface of the first elastic sheet 20 on the anti-vibration source side, and an anti-vibration source side surface of the high specific gravity sheet 40.
  • the process of adhering to the casing 50 (vibration object), and the order in which these processes are performed can be appropriately set.
  • the electronic device A having the vibration actuator mounting structure 1 is opened by removing the front panel and the touch operation panel A1 (see FIG. 3). Further, the comparative example 1 omits the high specific gravity sheet 40, and the first elastic sheet 20 has the same thickness as the second elastic sheet 30 (about 0.6 mm) and is made of the same material. The surface of the elastic sheet 20 ′ on the side opposite to the vibration source is bonded and fixed to the housing 50 (vibration object) (see the center of FIG. 4). Further, in Comparative Example 2, only the first elastic sheet 20 is omitted, and the vibration transmission surface 11A of the vibration actuator 10 is directly bonded to the high specific gravity sheet 40 (see the lower side in FIG. 4). .
  • the vibration pickup B1 was bonded and fixed to the outer surface of the casing 50, and the microphone B2 was installed 10 cm above the casing 50. Then, AC power having a predetermined waveform was applied to the vibration actuator 10 to vibrate the vibrator 12 in the vibration actuator 10 at about 150 Hz, and measurement of the vibration level and sound pressure level and frequency analysis were performed.
  • FIG. 5 is a graph showing measurement results with the horizontal axis representing the frequency and the vertical axis representing the vibration level.
  • the average level L in the dense part in the range a of 1000 to 3000 (Hz) (L
  • the level L is approximately ⁇ 100 (dB) in the range a of 1000 to 3000 (Hz) in the lower embodiment, which is sometimes referred to as a floor level). That is, the vibration level of the example is approximately 10 (dB) lower than that of the comparative example 1.
  • FIG. 6 is a graph showing measurement results with the horizontal axis representing frequency and the vertical axis representing sound pressure level.
  • the level L is approximately ⁇ 15 (dB) in the range a of 1000 to 3000 (Hz).
  • the level L is approximately ⁇ 20 (dB) in the range a of 1000 to 3000 (Hz). That is, the sound pressure level of the example is about 5 (dB) lower than that of the comparative example 1.
  • the bar graph on the upper side of FIG. 7 is a comparison of vibration levels for the example, comparative example 1, and comparative example 2.
  • the bar graph on the lower side of FIG. 7 compares the sound pressure level (A characteristic sound pressure level) for Example, Comparative Example 1, and Comparative Example 2. From these graphs, the vibration level is not significantly different between Example, Comparative Example 1 and Comparative Example 2, but the sound pressure level is lower in Comparative Example 2 than in Comparative Example 1, and further in Example than in Comparative Example 2. Was low.
  • the sound pressure level of the example was 1.6 db smaller than that of the comparative example 1.
  • the sound pressure level can be remarkably reduced without substantially reducing the vibration level by the space-saving, thin and light simple structure. That is, in this embodiment, vibration and sound pressure in a high frequency region of 700 Hz or higher are reduced, but generally, vibration of 500 Hz or higher is hardly perceived, and therefore only the sound pressure level is significant for the entire frequency. It is inferred that it has declined.
  • the second elastic sheet 30 opposite to the vibration transmission surface 11A is brought into contact with the back surface of the touch operation panel A1, so that the vibration actuator 10 and the touch operation panel are in contact with each other.
  • the contact state of A1 is stabilized. For this reason, generation
  • the electronic device A which comprises the vibration actuator attachment structure 1 was used as the smart phone, as another example of this electronic device A, it does not have a wristwatch type wearable computer or touch operation panel A1. It can be used for electronic devices.
  • Vibration actuator mounting structure 10 Vibration actuator 11: Case 11A: Vibration transmission surface 20: First elastic sheet (elastic member) 30: Second elastic sheet (elastic member) 40: High specific gravity sheet (high specific gravity member) 50: Housing (vibration object) A: Electronic equipment A1: Touch operation panel B1: Vibration pickup B2: Microphone

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Telephone Set Structure (AREA)
PCT/JP2017/041218 2016-11-17 2017-11-16 振動アクチュエータ取付構造及び該振動アクチュエータ取付構造を備えた電子機器並びに該振動アクチュエータ取付構造の製造方法。 WO2018092833A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780071084.XA CN109963659B (zh) 2016-11-17 2017-11-16 振动促动器安装结构、具有该振动促动器安装结构的电子设备以及该振动促动器安装结构的制造方法

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JP2016224004A JP6715748B2 (ja) 2016-11-17 2016-11-17 振動アクチュエータ取付構造及び該振動アクチュエータ取付構造を備えた電子機器並びに該振動アクチュエータ取付構造の製造方法。
JP2016-224004 2016-11-17

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JP7363799B2 (ja) 2018-10-04 2023-10-18 日本精機株式会社 操作装置
DE112021002548T5 (de) 2020-04-28 2023-03-16 Nippon Seiki Co., Ltd. Bedienungsvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH116223A (ja) * 1997-06-18 1999-01-12 Kobe Steel Ltd 吸音構造体
JP2001309472A (ja) * 2000-04-26 2001-11-02 Onkyooribu Kk 移動体通信機
JP2002176745A (ja) * 2000-12-08 2002-06-21 Namiki Precision Jewel Co Ltd 電磁振動体及び携帯端末機
JP2007262713A (ja) * 2006-03-28 2007-10-11 Sekisui Chem Co Ltd 遮音防振シート、管継手または管、管継手構造または管構造ならびに排水立て管構造
JP2016034172A (ja) * 2014-07-30 2016-03-10 日本電産コパル株式会社 リニア振動モータ
JP2016127621A (ja) * 2014-12-26 2016-07-11 株式会社ジェイテクト モータ

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Publication number Priority date Publication date Assignee Title
CN1153703A (zh) * 1995-11-01 1997-07-09 材料科学公司 带有图案的消除噪音复合材料
JP3322821B2 (ja) * 1997-03-06 2002-09-09 日東電工株式会社 防音材
CN1104773C (zh) * 1999-11-25 2003-04-02 北京松下通信设备有限公司 一种可降低电动机噪音的装置
DE102012018368A1 (de) * 2012-09-18 2014-03-20 Cornelius Lungu Hybride schalldämmende Strukturen und deren Anwendungen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH116223A (ja) * 1997-06-18 1999-01-12 Kobe Steel Ltd 吸音構造体
JP2001309472A (ja) * 2000-04-26 2001-11-02 Onkyooribu Kk 移動体通信機
JP2002176745A (ja) * 2000-12-08 2002-06-21 Namiki Precision Jewel Co Ltd 電磁振動体及び携帯端末機
JP2007262713A (ja) * 2006-03-28 2007-10-11 Sekisui Chem Co Ltd 遮音防振シート、管継手または管、管継手構造または管構造ならびに排水立て管構造
JP2016034172A (ja) * 2014-07-30 2016-03-10 日本電産コパル株式会社 リニア振動モータ
JP2016127621A (ja) * 2014-12-26 2016-07-11 株式会社ジェイテクト モータ

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JP2018079434A (ja) 2018-05-24
JP6715748B2 (ja) 2020-07-01
CN109963659B (zh) 2021-02-05

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