WO2014163047A1 - Amincissement d'un actionneur de vibration multifonction - Google Patents

Amincissement d'un actionneur de vibration multifonction Download PDF

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Publication number
WO2014163047A1
WO2014163047A1 PCT/JP2014/059518 JP2014059518W WO2014163047A1 WO 2014163047 A1 WO2014163047 A1 WO 2014163047A1 JP 2014059518 W JP2014059518 W JP 2014059518W WO 2014163047 A1 WO2014163047 A1 WO 2014163047A1
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WO
WIPO (PCT)
Prior art keywords
vibration
housing
magnetic circuit
vibration actuator
function
Prior art date
Application number
PCT/JP2014/059518
Other languages
English (en)
Japanese (ja)
Inventor
優一 橋本
大橋　清
陽介 橋本
Original Assignee
並木精密宝石株式会社
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 並木精密宝石株式会社 filed Critical 並木精密宝石株式会社
Publication of WO2014163047A1 publication Critical patent/WO2014163047A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/03—Transducers capable of generating both sound as well as tactile vibration, e.g. as used in cellular phones

Definitions

  • the present invention relates to a multi-function vibration actuator having a dynamic structure capable of performing sensory vibration and sound reproduction by vibrating a target object to be pasted and capable of outputting sensory vibration even when a magnetic circuit unit itself vibrates.
  • mobile communication devices represented by mobile phones are mainly multi-function mobile phones that have enhanced data communication functions and can play music and videos apart from communication functions such as telephone calls.
  • priority is given to the enlargement of the screen as compared with other elements. Therefore, the sound generation function for incoming calls and the like is disclosed in Japanese Patent No. 3949273 (hereinafter referred to as Patent Document 1) and Japanese Patent Application Laid-Open No. 2009-195799 (hereinafter referred to as Japanese Unexamined Patent Application Publication No. 2009-195799).
  • Patent Document 1 Japanese Patent No. 3949273
  • Japanese Patent Application Laid-Open No. 2009-195799 hereinafter referred to as Japanese Unexamined Patent Application Publication No. 2009-195799
  • a method of performing sound reproduction by vibrating a housing by a vibration generator such as described in Patent Document 2 is used.
  • the structure described in Patent Document 1 is characterized in that a vibration generator is embedded in the diaphragm, and a sub-panel for transmitting vibration from the voice coil is installed on the inner wall of the embedded portion in the diaphragm.
  • the structure described in Patent Document 2 includes a sound reproducing function in which a sticking surface is a diaphragm by vibration of a voice coil, and a sensory vibration generating function by vibration of a magnetic circuit unit supported through a suspension.
  • the technical feature of the suspension is optimization of frequency characteristics using an auxiliary suspension.
  • the vibration generating device described in Patent Document 1 does not have a function to generate a sensory vibration due to its structure, so that a sensory vibration such as a vibration motor is separately provided when mounted on a multi-function mobile phone. There is a problem that an actuator must be provided.
  • the amount of vibration at the time of experiencing vibration is limited by housing the magnetic circuit portion and the suspension in the housing.
  • the structure described in Patent Document 1 that requires a separate sensory vibration device and the structure described in Patent Document 2 in which the amount of vibration is limited by the housing both ensuring the amount of vibration at the time of experiencing vibration output and reducing the overall thickness are achieved. Therefore, it is difficult to cope with the reduction in the thickness of the mounted components accompanying the reduction in the thickness and the increase in the screen size of the multi-function mobile phone.
  • the invention described in the present application aims to provide a multi-function vibration actuator that can easily secure the vibration amount of the sound pressure and the sensible vibration output even when the thickness is reduced.
  • the multi-function vibration actuator has only the acoustic transmission portion fixed to the ring-shaped housing and the magnetic circuit portion is attached via the suspension. Its technical feature is that More specifically, a structure is used in which a diaphragm is disposed on an end surface of a ring-shaped housing, and a magnetic circuit unit having a magnet and a weight is separately disposed on a suspension separately fixed to the housing.
  • the second aspect of the present invention is characterized by the structure described in the first aspect of the present application in which a magnetic air gap is provided in the magnetic circuit portion. More specifically, a magnet is provided inside a cup-shaped yoke made of a magnetic material, and a plate-shaped pole piece made of the same magnetic material is fixed on the magnet, and between the inner wall of the yoke and the outer edge of the pole piece. A structure in which a magnetic gap is formed is used.
  • the yoke and the weight are integrally formed in the second aspect.
  • the multi-function vibration actuator according to the first aspect of the present invention can reduce the thickness of the multi-function vibration actuator and increase the amount of vibration without impairing rigidity or the like.
  • the outer diameter and shape of the weight provided in the magnetic circuit section and the magnetic circuit section are not limited to the inner wall of the housing, and the magnetic circuit shape and weight are set according to the required vibration characteristics to adjust the vibration characteristics. be able to. Further, by limiting the number of components, the effect of reducing the number of parts and the number of assembly steps is also obtained.
  • the present application has a drive structure that reproduces sound by vibrating the housing via a sound transmission plate.
  • the surface of the mounting housing can be used as a diaphragm regardless of the mounting position of the acoustic transmission plate. Therefore, sound reproduction can be performed without providing sound emission holes required by other speakers, and a waterproof and dustproof effect can be easily imparted by sealing the mounting housing.
  • the structure is such that the acoustic transmission plate is directly attached to the mounting housing, it is possible to suppress the thickness dimension when assembled to the mounting housing.
  • the magnetic circuit portion is made independent from the housing, so that it is possible to secure the maximum amplitude at the time of bodily sensation vibration in the thin mounting housing.
  • a structure in which a magnetic air gap is provided in the magnetic circuit portion is used. For this reason, it is possible to concentrate the magnetic flux of the magnet mounted on the magnetic circuit unit in the magnetic gap, and to improve the responsiveness at the time of sound reproduction and sensation vibration in addition to the improvement of the magnetic efficiency.
  • the number of parts can be reduced and the overall strength can be increased. More specifically, in addition to the increase in strength by integrating the yoke and the weight as parts, the effect of securing the vibration amount due to the weight of the weight and reducing the number of processing steps for each part in the thin mounting housing. Can be obtained.
  • the thickness of the mounting housing it is possible to reduce the thickness of the mounting housing to be mounted without changing the size of the acoustic transmission portion, and at the same time, adjust the outside of the magnetic circuit portion according to the required amount of vibration.
  • the diameter and shape can be set.
  • Exploded perspective view of a multi-function vibration actuator used in an embodiment of the present invention 1 is a cross-sectional side view of the multi-function vibration actuator in the A-A ′ cross section of FIG. 1.
  • FIG. 1 is an overall perspective view of a multi-function vibration actuator used in the best mode of the present invention
  • FIG. 2 is an exploded perspective view thereof
  • FIG. 3 is a side sectional view taken along a line AA ′ in FIG. Respectively.
  • the multi-function vibration actuator used in this embodiment has a structure in which a yoke 7 provided with a weight 8 is projected out of the housing by making the housing 3 into a ring shape. Further, since the member in contact with the acoustic transmission diaphragm 1 made of a metal plate is used as the diaphragm, the acoustic transmission diaphragm 1 has a flat plate shape. As can be seen from FIGS. 2 and 3, in the multi-function vibration actuator described in the present embodiment, an acoustic transmission portion is constituted by the acoustic transmission diaphragm 1 provided with the voice coil 2.
  • a magnet 6 magnetized in the thickness direction is sandwiched between a pole piece 5 and a yoke 7 made of a magnetic material, and a weight 8 is provided on the yoke 7 to constitute a magnetic circuit section.
  • This embodiment has a dynamic structure in which the voice coil 2 of the acoustic transmission unit is disposed in the magnetic gap g of the magnetic circuit unit via a suspension 4 fixed to the housing 3.
  • the multi-function vibration actuator described in the present embodiment can be provided with a sound reproducing function and a vibration generating function by an acoustic transmission unit, and a function of generating a sensory vibration by a magnetic circuit unit. became.
  • the multi-function vibration actuator described in the present embodiment uses the dynamic structure. More specifically, by setting the input signal to the voice coil 2 in the vicinity of the resonance frequency of the casing to which the acoustic transmission unit is pasted, the sound reproduction function and vibration generation function by the vibration of the casing are provided. It can be used.
  • the housing 3 has a ring shape, so that other parts such as a cover can be omitted, and the overall structure can be made thin. .
  • the magnetic circuit portion protrudes to the lower side of the housing and the restriction in the radial direction of the magnetic circuit portion is eliminated by adopting the ring shape, it is possible to obtain an effect of increasing the vibration amount when experiencing bodily vibrations. did it.
  • These effects are achieved by reinforcing the housing 3 and reproducing the sound by the mounting housing using the acoustic transmission diaphragm. That is, the structure in which the housing 3 is reinforced by another driving member maintains rigidity even in a ring shape, and it has stable durability when holding the magnetic circuit portion via the suspension 4 and handling as a single component. It can be handled.
  • the suspension outer ring portion is formed by insert molding in the housing. For this reason, it is possible to further improve the rigidity of the housing 3 reinforced by the acoustic transmission diaphragm.
  • the diameter of the magnetic circuit portion is not limited by the housing or the like. For this reason, the external dimensions of the magnetic circuit unit and the weight 8 to be mounted can be set according to the space of the mounting housing and the required vibration amount. From the same technical point of view, it is also possible to adjust the vibration characteristics at the time of experiencing vibrations by arbitrarily setting the shape of the magnetic circuit unit.
  • the voice coil-yoke distance t1 in the vibration direction in the magnetic gap is longer than the magnetic circuit outer edge-housing end distance t2. For this reason, in the event of an impact such as a drop, the housing end can function as a stopper for the magnetic circuit portion, thereby preventing a collision between the voice coil and the yoke.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

Le problème décrit par la présente invention est d'obtenir un actionneur de vibration multifonction qui peut, même lorsqu'il est aminci, assurer facilement une pression acoustique et une quantité de vibration qui aboutissent à une vibration manifeste. La solution selon l'invention porte sur la configuration d'un boîtier de manière à lui donner une forme d'anneau, et sur l'ajout d'une structure de renfort à l'aide d'une membrane propageant les sons, etc. Ainsi, il est possible qu'une unité à circuit magnétique dépasse du boîtier. Grâce à cette configuration, l'actionneur de vibration multifonction ci-décrit peut assurer une pression acoustique provoquée par la vibration d'une enveloppe ajustée et une quantité de vibration due à l'expansion de l'unité à circuit magnétique qui dépasse, même lorsque ledit actionneur de vibration est aminci.
PCT/JP2014/059518 2013-04-01 2014-03-31 Amincissement d'un actionneur de vibration multifonction WO2014163047A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-076041 2013-04-01
JP2013076041A JP2014204156A (ja) 2013-04-01 2013-04-01 多機能型振動アクチュエータの薄型化

Publications (1)

Publication Number Publication Date
WO2014163047A1 true WO2014163047A1 (fr) 2014-10-09

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PCT/JP2014/059518 WO2014163047A1 (fr) 2013-04-01 2014-03-31 Amincissement d'un actionneur de vibration multifonction

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JP (1) JP2014204156A (fr)
WO (1) WO2014163047A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5957056B2 (ja) * 2014-10-02 2016-07-27 株式会社三共 遊技機

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000023440A (ja) * 1998-07-06 2000-01-21 Sanyo Electric Co Ltd 音響・振動発生装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000023440A (ja) * 1998-07-06 2000-01-21 Sanyo Electric Co Ltd 音響・振動発生装置

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