WO2009090857A1 - スピーカ用振動板およびこれを用いたスピーカならびにこのスピーカを用いた電子機器およびスピーカ搭載装置 - Google Patents
スピーカ用振動板およびこれを用いたスピーカならびにこのスピーカを用いた電子機器およびスピーカ搭載装置 Download PDFInfo
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- WO2009090857A1 WO2009090857A1 PCT/JP2009/000022 JP2009000022W WO2009090857A1 WO 2009090857 A1 WO2009090857 A1 WO 2009090857A1 JP 2009000022 W JP2009000022 W JP 2009000022W WO 2009090857 A1 WO2009090857 A1 WO 2009090857A1
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- speaker
- speaker diaphragm
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- bamboo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
- H04R2231/001—Moulding aspects of diaphragm or surround
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/021—Diaphragms comprising cellulose-like materials, e.g. wood, paper, linen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/025—Diaphragms comprising polymeric materials
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/029—Diaphragms comprising fibres
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
Definitions
- the present invention relates to a loudspeaker diaphragm used in various audio equipment and video equipment, a loudspeaker using the loudspeaker, electronic equipment such as a stereo set and a television set, and a loudspeaker-mounted device such as an automobile.
- FIG. 6 is a cross-sectional view of a resin speaker diaphragm made by conventional injection molding.
- the conventional speaker diaphragm 31 was obtained by using resin such as polypropylene and injection-molding resin pellets in a pre-set mold.
- reinforcing materials such as mica were mixed to adjust the physical property values and the characteristics and sound quality of the speaker. Further, in order to further increase the degree of freedom in adjusting the physical properties, the sound quality is adjusted by mixing pulp material.
- this speaker diaphragm uses a conventional paper manufacturing method or a resin injection molding or press manufacturing method, and therefore, a paper diaphragm or a resin diaphragm was the center.
- the paper diaphragm has the advantage that the physical properties of the loudspeaker diaphragm can be set finely and the degree of freedom in adjusting the characteristics and sound quality of the loudspeaker is increased. It has the disadvantage of being inferior. In addition, the production has a disadvantage that it cannot be obtained unless a very large number of processes such as paper making are required.
- the speaker diaphragm mixed with resin and pulp material increases the degree of freedom of sound quality adjustment, and can secure moisture resistance reliability.
- the present invention provides a loudspeaker diaphragm that has a high degree of freedom in adjusting characteristics and sound quality as a loudspeaker, can ensure moisture resistance reliability and strength, and can also improve productivity.
- the present invention has a configuration including a resin and a carbonized bamboo material.
- the high rigidity of the carbonized bamboo material can be efficiently exhibited in the resin without significantly impairing the internal loss of the resin as compared with other inorganic fillers.
- the degree of freedom in setting the physical properties of the speaker diaphragm is increased, and a speaker diaphragm with high productivity can be obtained by injection molding. Accordingly, the degree of freedom in adjusting the characteristics and sound quality as a speaker is great, moisture resistance reliability and strength can be ensured, and productivity can be improved.
- FIG. 1 is a cross-sectional view of the speaker diaphragm according to Embodiment 1 of the present invention.
- FIG. 2 is a plan view of the speaker diaphragm in the same embodiment.
- FIG. 3 is a cross-sectional view of the speaker according to Embodiment 2 of the present invention.
- FIG. 4 is an external view of an electronic device according to Embodiment 3 of the present invention.
- FIG. 5 is a cross-sectional view of the speaker mounting apparatus according to Embodiment 4 of the present invention.
- FIG. 6 is a cross-sectional view of a conventional speaker diaphragm.
- FIG. 1 is a cross-sectional view of a peaker diaphragm according to Embodiment 1 of the present invention.
- FIG. 2 is a plan view of the speaker diaphragm in the present embodiment. 1 and 2, the speaker diaphragm 1 is formed by injection molding a material in which a resin 1A and a bamboo material 1B carbonized at a temperature of 500 ° C. or higher are mixed.
- a crystalline or amorphous olefin resin for the resin 1A.
- an olefin resin By using an olefin resin, moldability is improved.
- a crystalline resin and an amorphous resin according to applications it is possible to satisfy the optimum physical property values as a resin material.
- the bamboo material 1B carbonized at a temperature of 500 ° C. or higher increases hardness and develops pores as compared with the case of carbonizing at a temperature lower than 500 ° C., leading to improvement of internal loss.
- natural and bright timbres can be reproduced, and dark and uniform timbre unique to resin can be suppressed.
- the rigidity of the speaker diaphragm 1 is reduced.
- the carbonized bamboo material 1B is used, the rigidity of the speaker diaphragm 1 can be improved simultaneously with the dyeing.
- polypropylene is generally readily available and easy to injection mold.
- the resin of the present invention is not limited to polypropylene, and engineering plastics or biodegradable plastics typified by polylactic acid may be used for environmental considerations.
- the particle size of the carbonized bamboo material B is preferably 30 ⁇ m or more and 100 ⁇ m or less. A more desirable particle size is 40 ⁇ m or more and 70 ⁇ m or less.
- the particle size of the carbonized bamboo material B by setting the particle size of the carbonized bamboo material B to 100 ⁇ m or less, poor dispersion can be suppressed, which leads to improvement in appearance quality and physical properties. However, if it exceeds 100 ⁇ m, poor dispersion occurs and the appearance is impaired practically.
- the particle size of the carbonized bamboo material B is 30 ⁇ m or more, a reinforcing effect can be easily obtained, and the carbonized bamboo material B can be used efficiently.
- it is smaller than 30 ⁇ m practical utilization efficiency of the carbonized bamboo material B is deteriorated.
- the grain size of the bamboo material B is smaller than 30 ⁇ m or larger than 100 ⁇ m, there arises a problem that the productivity and the quality of the product are lowered.
- the particle size that sufficiently satisfies both productivity and product quality is 40 ⁇ m or more and 70 ⁇ m or less.
- the mixing ratio of the carbonized bamboo material 1B is less than 5% by weight, the effect of the bamboo material 1B hardly appears.
- the mixing ratio of the carbonized bamboo material 1B is more than 20% by weight, the speaker diaphragm becomes brittle and the productivity and formability are lowered due to the lowering of fluidity, thereby reducing the degree of freedom of shape setting.
- the bamboo fiber 1C is preferably 0.2 mm or more and 3 mm or less. This bamboo fiber 1C is added as a filler material. By using this length of bamboo fiber 1C, when the resin 1A and the carbonized bamboo material 1B are combined, the effect of improving the strength is the most. It can be used efficiently, and productivity and quality can be improved.
- the average fiber diameter of the bamboo fiber 1C refined to the microfibril state is 10 ⁇ m or less.
- the fiber has higher elasticity when the aspect ratio (L / D), which is the ratio between the fiber length L and the fiber diameter D, is higher, and the bamboo fiber 1C that has been refined to the microfibril state has a higher aspect ratio. Rate can be realized. That is, when the fiber length L is 0.2 to 3 mm and the average fiber diameter is 0 to 10 ⁇ m, a high elastic modulus is always obtained.
- bamboo fiber 1C partially refined to a microfibril state forms a structure in which fine bamboo fibers are intertwined.
- the hardness of the carbonized bamboo material 1B can be utilized.
- the high elastic modulus of the speaker diaphragm 1 can be obtained more effectively.
- bamboo powder may be used for some or all of the bamboo material containing bamboo fiber 1C.
- 50% by weight or more of bamboo fiber 1C can be easily mixed into the resin. That is, by using bamboo powder, more than a half quantity of natural fibers can be used, and the environmental burden when using a resin can be reduced.
- a reinforcing material may be mixed.
- a reinforcing material at least one of mica, talc, calcium carbonate, and clay can be used.
- mica when mica is mixed in the reinforcing material, the elastic modulus can be increased.
- talc, calcium carbonate, and clay when talc, calcium carbonate, and clay are mixed, internal loss can be increased.
- the color of the speaker diaphragm 1 can be adjusted without reducing the elastic modulus of the speaker diaphragm 1.
- a compatibilizing agent it becomes possible to increase the compatibility of the bamboo fiber with a nonpolar resin such as polypropylene, and to efficiently exhibit the characteristics of the bamboo fiber.
- a hydrolyzable long-chain alkylsilane as the compatibilizer. This is because the long-chain alkyl group of the hydrolyzable long-chain alkylsilane is structurally similar to an olefin resin such as polypropylene, so that compatibility is improved. As a result, the compatibility with bamboo fiber is increased and the characteristics are improved.
- the compatibilizing agent is not limited thereto, and so-called modified polypropylene modified with a silane coupling agent or maleic anhydride to have polarity may be used.
- the physical property values of the speaker diaphragm 1 can be freely adjusted with high accuracy, and predetermined characteristics and sound quality are realized. It becomes possible. In order to realize the predetermined characteristics and sound quality, deep know-how regarding characteristics creation and sound creation is necessary, but in general, it is often performed by the following method.
- the speaker characteristics and sound can be modified to some extent by changing the parameters of the components, and can be brought close to the predetermined characteristics and sound quality.
- the parameters of the components other than the speaker diaphragm 1 among the speaker components are fixed.
- the parameters that can be changed in the speaker diaphragm 1 are area, shape, weight, surface thickness, etc. other than the physical property values.
- the area, shape, weight and surface thickness of the speaker diaphragm 1 are almost determined at the initial stage of speaker design. That is, the sound pressure frequency characteristic and sound quality of the speaker are roughly determined by conditions other than the physical property values of the speaker diaphragm 1. In this case, unnecessary peaks and dips occur in the sound pressure frequency characteristics, and distortion often occurs greatly in a specific frequency band. As for the sound quality, the timbre greatly depends on the sound pressure frequency characteristic. These causes are caused by the area, shape, weight, and surface thickness of the speaker diaphragm 1, and in particular, are often due to the vibration mode of the speaker diaphragm 1. When selecting a diaphragm material in order to improve such unnecessary peaks, dips and distortions and obtain good sound quality, the following procedure can be followed.
- a material that can satisfy the sound pressure frequency characteristics, sound quality, and reliability grade required for the speaker is made of resin 1A, carbonized bamboo material 1B, and bamboo that is at least partially refined to a microfibril state.
- the fiber 1C and other mixed materials are selected.
- the resin 1A serving as the base is selected with particular emphasis on reliability such as its heat-resistant grade, and a material whose specific tone color of each resin 1A is close to a predetermined tone color is selected.
- the selected material is kneaded to prepare a master batch pellet highly filled with bamboo material 1B and bamboo fiber 1C carbonized for injection molding.
- the diaphragm 1 for speakers is obtained by injection molding using this master batch pellet.
- the physical properties of the speaker diaphragm 1 thus obtained are measured and evaluated.
- a speaker is prototyped using the speaker diaphragm 1, the characteristics and sound quality are actually measured, and further audition is performed for final evaluation. If the predetermined characteristics and sound quality cannot be obtained by the evaluation, this prototype process is repeated many times. And in that, we will improve the selection of materials and their blending ratio, and gradually bring them closer to the target characteristics and sound quality.
- the speaker diaphragm 1 satisfying predetermined characteristics and sound quality can be finished.
- the speaker diaphragm 1 that is very close to the predetermined characteristics and sound quality can be finished.
- polypropylene is generally easily available and injection molding is easy, but the present invention is not limited to this resin material, and can be freely used according to the desired characteristic value.
- the present invention is not limited to this resin material, and can be freely used according to the desired characteristic value.
- biodegradable plastics especially polylactic acid
- Polylactic acid has relatively better compatibility with bamboo fibers than polypropylene, and the compatibility is further improved by using tannin or the like as a compatibilizing agent.
- the speaker diaphragm is configured by mixing resin and carbonized bamboo material.
- the bamboo material by carbonizing the bamboo material, it is possible to utilize the high elastic modulus and further harden it. Therefore, the rigidity of the speaker diaphragm 1 can be increased, and the sound quality can be improved.
- the degree of freedom in setting the physical properties of the speaker diaphragm 1 is increased while maintaining the high internal loss, moisture resistance, and water resistance reliability, which are characteristics of the resin diaphragm.
- the speaker diaphragm 1 with improved productivity and dimensional stability can be obtained by obtaining the speaker diaphragm 1 by injection molding.
- these resins, as well as reinforcing materials that are mixed materials are selected from a wide range of materials, and by appropriately setting the blending ratio, it is possible to achieve highly accurate characteristics and sound quality that were previously impossible. Can be adjusted.
- the quality of the product such as color can also be made into a high-quality black-colored design that the carbonized bamboo material has. Therefore, the speaker diaphragm 1 having an excellent appearance can be obtained.
- the carbon black pigment is added, the rigidity of the speaker diaphragm 1 is lowered.
- the rigidity of the speaker diaphragm 1 can be improved simultaneously with the coloring. .
- the variation by the combination can be set infinitely, and the desired requirements can be satisfied in the characteristic creation, sound creation and design.
- FIG. 3 is a cross-sectional view of the speaker according to Embodiment 2 of the present invention.
- the speaker of the present embodiment constitutes an internal magnet type magnetic circuit 5 by sandwiching a magnetized magnet 2 between an upper plate 3 and a yoke 4.
- a frame 7 is coupled to the yoke 4 of the magnetic circuit 5.
- the outer periphery of the speaker diaphragm 1 described in the first embodiment is bonded to the peripheral portion of the frame 7 via an edge 9.
- One end of the voice coil 8 is coupled to the center portion of the speaker diaphragm 1 and the other end is coupled so as to fit into the magnetic gap 6 of the magnetic circuit 5.
- the speaker having the inner magnet type magnetic circuit 5 has been described, but the present invention is not limited to this, and may be applied to a speaker having an outer magnet type magnetic circuit.
- the degree of freedom in adjusting characteristics and sound quality is great, moisture resistance reliability and strength can be ensured, and a speaker with excellent appearance and high productivity can be realized.
- FIG. 4 is an external view of an audio minicomponent system as an electronic apparatus according to Embodiment 3 of the present invention.
- the speaker 10 is incorporated in the enclosure 11 to constitute a speaker system 21.
- the amplifier 12 has an amplification circuit for an electric signal input to the speaker system 21.
- An operation unit 13 such as a player outputs a source input to the amplifier 12.
- the audio mini-component system 14 that is an electronic device includes the amplifier 12, the operation unit 13, and the speaker system 21.
- the amplifier 12, the operation unit 13, and the enclosure 11 are main body units of the mini component system 14. That is, the speaker 10 is attached to the main body of the mini component system 14.
- the speaker 10 is mounted with the speaker diaphragm described in the first embodiment. Therefore, the speaker described in Embodiment 2 can be used as the speaker 10.
- the voice coil of the speaker 10 is supplied with power from the amplifier 12 of the main body and emits sound from the speaker diaphragm.
- the mini component system 14 having the above-described configuration can create characteristics and sounds with high accuracy that could not be realized in the past, and can be innovatively designed.
- the audio minicomponent system 14 has been described as an application of the speaker 10 to an electronic device, the present invention is not limited to this. It can also be applied to portable portable audio equipment. Furthermore, it can be widely applied and deployed in video equipment such as liquid crystal televisions and plasma display televisions, information communication equipment such as mobile phones, and electronic equipment such as computer-related equipment.
- FIG. 5 is a cross-sectional view of an automobile 15 that is a speaker mounting apparatus according to Embodiment 4 of the present invention.
- the automobile 15 of this embodiment includes an automobile body 16.
- the speaker 10 is incorporated in the rear tray or front panel of the automobile body 16 and used as a part of car navigation or car audio.
- the speaker 10 is mounted with the speaker diaphragm described in the first embodiment. Therefore, the speaker described in Embodiment 2 can be used as the speaker 10.
- voice guidance by car navigation, music by car audio, and the like can be obtained from the speaker 10 in the vehicle.
- the present embodiment as described in the first embodiment, it is possible to create highly accurate characteristics and sound making use of the characteristics of the speaker 10, and to obtain a novel black-colored design. Therefore, it is possible to improve the degree of freedom in acoustic design of a speaker mounting device such as an automobile on which the speaker 10 is mounted.
- the present invention can be applied to speaker diaphragms, speakers, audiovisual equipment, information communication equipment and other electronic devices such as automobiles, and speaker mounting devices that require highly accurate characteristics, sound creation, and novel design.
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Abstract
Description
1A 樹脂
1B 炭化させた竹材料
1C 竹繊維
2 マグネット
3 上部プレート
4 ヨーク
5 磁気回路
6 磁気ギャップ
7 フレーム
8 ボイスコイル
9 エッジ
10 スピーカ
11 エンクロジャー
12 アンプ
13 プレーヤ
14 ミニコンポシステム
15 自動車
図1は、本発明の実施の形態1におけるピーカ用振動板の断面図である。図2は、本実施の形態におけるスピーカ用振動板の平面図である。図1および図2において、スピーカ用振動板1は、樹脂1Aと500℃以上の温度で炭化させた竹材料1Bとを混入した材料を射出成形して構成している。
図3は、本発明の実施の形態2におけるスピーカの断面図である。図3に示すように、本実施の形態のスピーカは、着磁されたマグネット2を上部プレート3およびヨーク4により挟み込んで内磁型の磁気回路5を構成している。磁気回路5のヨーク4にフレーム7を結合している。このフレーム7の周縁部に、実施の形態1で説明したスピーカ用振動板1の外周を、エッジ9を介して接着している。スピーカ用振動板1の中心部にボイスコイル8の一端を結合するとともに、反対の一端を磁気回路5の磁気ギャップ6にはまり込むように結合している。
図4は、本発明の実施の形態3における電子機器としてのオーディオ用のミニコンポシステムの外観図である。スピーカ10は、エンクロジャー11に組込まれてスピーカシステム21を構成している。アンプ12はスピーカシステム21に入力する電気信号の増幅回路を有する。プレーヤ等の操作部13はアンプ12に入力されるソースを出力する。電子機器であるオーディオ用のミニコンポシステム14は、このようにアンプ12、操作部13、スピーカシステム21を有する。アンプ12、操作部13、エンクロジャー11は、ミニコンポシステム14の本体部である。すなわち、スピーカ10は、ミニコンポシステム14の本体部に装着されている。スピーカ10には、実施の形態1で説明したスピーカ用振動板が装着されている。したがって、スピーカ10として実施の形態2で説明したスピーカを用いることができる。スピーカ10のボイスコイルは、本体部のアンプ12から給電されてスピーカ用振動板から音を発する。
図5は、本発明の実施の形態4におけるスピーカ搭載装置である自動車15の断面図である。図5に示すように、本実施の形態の自動車15は自動車本体16を備えている。自動車本体16のリアトレイやフロントパネルにスピーカ10を組込んで、カーナビゲーションやカーオーディオの一部として使用している。スピーカ10には、実施の形態1で説明したスピーカ用振動板が装着されている。したがって、スピーカ10として実施の形態2で説明したスピーカを用いることができる。本実施の形態によれば、車内において、カーナビゲーションによる音声案内やカーオーディオによる音楽などをスピーカ10から得ることができる。
Claims (18)
- 樹脂と、炭化させた竹材料とを含むスピーカ用振動板。
- 竹繊維をさらに含む請求項1記載のスピーカ用振動板。
- 前記竹繊維は、ミクロフィブリル状態にした前記竹繊維をさらに含む請求項2記載のスピーカ用振動板。
- 射出成形により形成された請求項1記載のスピーカ用振動板。
- 前記樹脂は、結晶性または非晶性のオレフィン樹脂である請求項1記載のスピーカ用振動板。
- 前記樹脂は、ポリプロピレンである請求項1記載のスピーカ用振動板。
- 前記炭化させた竹材料の粒径は、30μm以上、100μm以下の範囲内にある請求項1記載のスピーカ用振動板。
- 前記炭化させた竹材料は、500℃または500℃より高い温度で炭化させた請求項1記載のスピーカ用振動板。
- 前記炭化させた竹材料の混入比率は、5重量%以上、20重量%以下の範囲内にある請求項1記載のスピーカ用振動板。
- 前記竹繊維の繊維長は、0.2mm以上、3mm以下の範囲内にある請求項2記載のスピーカ用振動板。
- 前記ミクロフィブリル状態にした竹繊維の平均繊維径は、10μmまたは10μmより小さい請求項3記載のスピーカ用振動板。
- 前記竹材料は竹粉である請求項1記載のスピーカ用振動板。
- 強化材をさらに含む請求項1記載のスピーカ用振動板。
- 前記強化材は、マイカ、タルク、炭酸カルシウム、クレイ、のうちの少なくともいずれかで構成された請求項13記載のスピーカ用振動板。
- 相溶化剤をさらに含む請求項1記載のスピーカ用振動板。
- 磁気ギャップを有する磁気回路に結合されたフレームと、
前記フレームの外周部に結合された請求項1~15のいずれか1項に記載のスピーカ用振動板と、
前記スピーカ用振動板に結合されるとともに、一部が前記磁気回路の前記磁気ギャップに配置されたボイスコイルとからなるスピーカ。 - 磁気ギャップを有する磁気回路に結合されたフレームと、
前記フレームの外周部に結合された請求項1~15のいずれか1項に記載のスピーカ用振動板と、
前記スピーカ用振動板に結合されるとともに、一部が前記磁気回路の前記磁気ギャップに配置されたボイスコイルとからなるスピーカと、
前記スピーカへの入力信号を増幅する増幅回路とを備えた電子機器。 - 磁気ギャップを有する磁気回路に結合されたフレームと、
前記フレームの外周部に結合された請求項1~15のいずれか1項に記載のスピーカ用振動板と、
前記スピーカ用振動板に結合されるとともに、一部が前記磁気回路の前記磁気ギャップに配置されたボイスコイルとからなるスピーカを移動体に備えたスピーカ搭載装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801027649A CN101911725A (zh) | 2008-01-18 | 2009-01-07 | 扬声器用振动板、使用它的扬声器、使用该扬声器的电子设备以及扬声器搭载装置 |
US12/812,313 US8340342B2 (en) | 2008-01-18 | 2009-01-07 | Diaphragm for speaker, speaker using the diaphragm, electronic device using the speaker, and speaker-mounted device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2008-008864 | 2008-01-18 | ||
JP2008008864A JP5034970B2 (ja) | 2008-01-18 | 2008-01-18 | スピーカ用振動板およびこれを用いたスピーカならびにこのスピーカを用いた電子機器および装置 |
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WO2009090857A1 true WO2009090857A1 (ja) | 2009-07-23 |
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PCT/JP2009/000022 WO2009090857A1 (ja) | 2008-01-18 | 2009-01-07 | スピーカ用振動板およびこれを用いたスピーカならびにこのスピーカを用いた電子機器およびスピーカ搭載装置 |
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US (1) | US8340342B2 (ja) |
JP (1) | JP5034970B2 (ja) |
CN (1) | CN101911725A (ja) |
WO (1) | WO2009090857A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102687530A (zh) * | 2009-12-28 | 2012-09-19 | 松下电器产业株式会社 | 扬声器用振动板、扬声器用防尘盖、扬声器用框架、使用了这些的扬声器、以及使用了该扬声器的电子设备及装置 |
CN103181193A (zh) * | 2010-10-20 | 2013-06-26 | 松下电器产业株式会社 | 音响用成型品、采用了其的扬声器以及采用了该扬声器的电子设备及移动装置 |
EP2651148A1 (en) * | 2011-04-15 | 2013-10-16 | Panasonic Corporation | Resin molding part for speakers and speaker equipped with same, and electronic device and mobile device each equipped with said speaker |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5387429B2 (ja) * | 2010-01-27 | 2014-01-15 | パナソニック株式会社 | スピーカ用振動板およびこれを用いたスピーカならびにこのスピーカを用いた電子機器および装置 |
JP5682431B2 (ja) * | 2011-04-15 | 2015-03-11 | パナソニックIpマネジメント株式会社 | スピーカ用振動板およびこれを用いたスピーカならびにこのスピーカを用いた電子機器および装置 |
US20160134972A1 (en) * | 2013-07-25 | 2016-05-12 | Panasonic Intellectual Property Management Co., Ltd. | Loudspeaker-purpose vibration plate, loudspeaker using that vibration plate, electronic device, and mobile apparatus |
JP2019054309A (ja) | 2016-01-28 | 2019-04-04 | パナソニックIpマネジメント株式会社 | スピーカ用振動板、スピーカ、および、スピーカ用振動板の製造方法 |
JP6592060B2 (ja) * | 2017-11-01 | 2019-10-16 | ファナック株式会社 | 工作機械および塑性加工方法 |
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WO2005079110A1 (ja) * | 2004-02-18 | 2005-08-25 | Matsushita Electric Industrial Co., Ltd. | スピーカ、スピーカ用振動板、ダストキャップ、それらの製造方法および製造装置 |
JP2006016461A (ja) * | 2004-06-30 | 2006-01-19 | Fa M Inc | 天然系充填材を含有する樹脂組成物の製造方法およびそれにより製造された樹脂組成物 |
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JP3770598B2 (ja) | 2002-03-26 | 2006-04-26 | 株式会社ケンウッド | スピーカシステム |
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CN1887026A (zh) * | 2004-08-19 | 2006-12-27 | 欧积股份有限公司 | 扬声器用振动板 |
US8199964B2 (en) * | 2006-02-20 | 2012-06-12 | Panasonic Corporation | Speaker diaphragm, speaker dust cap, speaker sub-cone, speaker using these components, and electronic apparatus using the same |
-
2008
- 2008-01-18 JP JP2008008864A patent/JP5034970B2/ja not_active Expired - Fee Related
-
2009
- 2009-01-07 CN CN2009801027649A patent/CN101911725A/zh active Pending
- 2009-01-07 WO PCT/JP2009/000022 patent/WO2009090857A1/ja active Application Filing
- 2009-01-07 US US12/812,313 patent/US8340342B2/en active Active
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WO2005079110A1 (ja) * | 2004-02-18 | 2005-08-25 | Matsushita Electric Industrial Co., Ltd. | スピーカ、スピーカ用振動板、ダストキャップ、それらの製造方法および製造装置 |
JP2006016461A (ja) * | 2004-06-30 | 2006-01-19 | Fa M Inc | 天然系充填材を含有する樹脂組成物の製造方法およびそれにより製造された樹脂組成物 |
JP2007221635A (ja) * | 2006-02-20 | 2007-08-30 | Matsushita Electric Ind Co Ltd | スピーカ用振動板およびこれを用いたスピーカならびにこのスピーカを用いた電子機器および装置 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102687530A (zh) * | 2009-12-28 | 2012-09-19 | 松下电器产业株式会社 | 扬声器用振动板、扬声器用防尘盖、扬声器用框架、使用了这些的扬声器、以及使用了该扬声器的电子设备及装置 |
US20120257781A1 (en) * | 2009-12-28 | 2012-10-11 | Panasonic Corporation | Speaker diaphragm, speaker dust cap, speaker frame, speaker using said parts, and electronic equipment and device using said speaker |
US8774449B2 (en) | 2009-12-28 | 2014-07-08 | Panasonic Corporation | Speaker diaphragm, speaker dust cap, speaker frame, speaker using said parts, and electronic equipment and device using said speaker |
CN103181193A (zh) * | 2010-10-20 | 2013-06-26 | 松下电器产业株式会社 | 音响用成型品、采用了其的扬声器以及采用了该扬声器的电子设备及移动装置 |
EP2651148A1 (en) * | 2011-04-15 | 2013-10-16 | Panasonic Corporation | Resin molding part for speakers and speaker equipped with same, and electronic device and mobile device each equipped with said speaker |
US20130301867A1 (en) * | 2011-04-15 | 2013-11-14 | Panasonic Corporation | Loudspeaker resin molding component and loudspeaker using the same and electronic device and mobile apparatus using the loudspeaker |
EP2651148A4 (en) * | 2011-04-15 | 2013-11-27 | Panasonic Corp | RESIN PART FOR SPEAKERS AND SPEAKERS THEREFORE, AND ELECTRONIC DEVICE AND MOBILE DEVICE WITH THIS SPEAKER |
US8873793B2 (en) | 2011-04-15 | 2014-10-28 | Panasonic Corporation | Loudspeaker resin molding component and loudspeaker using the same and electronic device and mobile apparatus using the loudspeaker |
Also Published As
Publication number | Publication date |
---|---|
US8340342B2 (en) | 2012-12-25 |
US20110164764A1 (en) | 2011-07-07 |
JP2009171386A (ja) | 2009-07-30 |
JP5034970B2 (ja) | 2012-09-26 |
CN101911725A (zh) | 2010-12-08 |
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