JPS58139596A - Dust cap of speaker - Google Patents
Dust cap of speakerInfo
- Publication number
- JPS58139596A JPS58139596A JP2155882A JP2155882A JPS58139596A JP S58139596 A JPS58139596 A JP S58139596A JP 2155882 A JP2155882 A JP 2155882A JP 2155882 A JP2155882 A JP 2155882A JP S58139596 A JPS58139596 A JP S58139596A
- Authority
- JP
- Japan
- Prior art keywords
- dust cap
- speaker
- cap
- potassium titanate
- single crystal
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000000428 dust Substances 0.000 title claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 239000013078 crystal Substances 0.000 claims abstract description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 235000010469 Glycine max Nutrition 0.000 claims 1
- 244000068988 Glycine max Species 0.000 claims 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 239000010936 titanium Substances 0.000 claims 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 abstract description 7
- -1 polypropylene Polymers 0.000 abstract description 7
- 239000004743 Polypropylene Substances 0.000 abstract description 6
- 229920001155 polypropylene Polymers 0.000 abstract description 6
- 239000008188 pellet Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000001746 injection moulding Methods 0.000 abstract 1
- 230000036244 malformation Effects 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 238000007666 vacuum forming Methods 0.000 abstract 1
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only for telephonic receivers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
この究明はプことえばコーン型スピーカー等のダストキ
ャップに関する。DETAILED DESCRIPTION OF THE INVENTION This investigation relates to dust caps for cone-type speakers and the like.
コーン型スピーカーは第１図に示打ごとく、プレート１
とセンターボール２で形成される１−気空隙３を含むイ
１６気回１烙４、前１己（１６′八りと隙３内に配置脩
されるボイス−１イル５を？（回し／、−コイルボビン
６、当１核コイルボビン６を弾ｔ’１．的に中心支持す
るダンパー７、コイルボビン６のト端に固定したコーン
紙８、−１−ン紙８の外ｔｆ、とフレーノ・９とを結合
したエツジ１０、当該エツジ１０はコーン紙の外縁部分
を延長して一体に成形、あるいｔｌ−別品（」より成形
しこれを接着する。およびコイルボビン６の上端縁又は
コーン紙８の前記コイルボビン６との数例部近傍に固着
したダスＩ・キャップ１１」、りなる。As shown in Figure 1, the cone type speaker is plate 1.
and the center ball 2 formed by the 1-air gap 3. A 16 air gap 3, the front 1 self (16' and the voice placed in the air gap 3) - 1 air space 3? (turn/ , - the coil bobbin 6, the damper 7 that centrally supports the core coil bobbin 6 in an elastic manner, the cone paper 8 fixed to the end of the coil bobbin 6, the outer tf of the -1-cone paper 8, and the Freno 9. The edge 10 is formed by extending the outer edge of the cone paper, or is molded from a separate piece () and then glued together. The cap 11 is fixed in the vicinity of the coil bobbin 6.
当該ダストキャップ１１はもともと、Ｉ！！Ｉ Ｓｌ’
４コイルボビン６上端りｉｌ Ｄよりコイルボビン６と
センターボール２との間隙に空気中の塵芥が侵入するの
を防止することを目的とするものである。The dust cap 11 was originally manufactured by I! ! I Sl'
The purpose is to prevent dust in the air from entering the gap between the coil bobbin 6 and the center ball 2 from the upper end of the four-coil bobbin 6.
しかるに、ｌ１ｌＪｉ己ダストキヤソフ“１１はコイル
ホ゛ビン６又はコーン紙８に結合されているので、コイ
ルボビン６の振動に応じて撮動し音波を１１ｆ方に放射
する。However, since the dust cassette 11 is connected to the coil bobbin 6 or the cone paper 8, it moves according to the vibration of the coil bobbin 6 and emits sound waves in the direction 11f.
そしてこの音Ｃ皮がコーン紙８より放射される１゛９彼
と同相である揚台何ら悪影響を与えることｅ゛１斤いが
、特定の周波数における自己共振による同相及び逆相成
分との干渉によって特にスピーカーの高域周波数詩に１
：に急ｉ唆なピークやディップが勺：に、聴感を著しく
悪化させる原因となることが分つている。This sound C is radiated from the cone paper 8 and has no adverse effect on the platform that is in phase with it, but interference with the in-phase and anti-phase components due to self-resonance at a specific frequency Particularly in the high frequency range of speakers
It is known that sudden peaks and dips can cause a significant deterioration of hearing sensation.
しかるに、現状において、ダストキャップ１１の共振に
対する抑制手段はあまり考慮されておらず、せいぜい粘
弾匪体停を貼着又は塗付することによって著モの内１都
ロスを（”Ｉ’ ｉ−Ｊ、していたのが現状である。However, in the current situation, little consideration has been given to suppressing the resonance of the dust cap 11, and at most, by pasting or painting a viscoelastic body stopper, one of the losses can be reduced ("I' i- J. The current situation is what was being done.
すなわち、成東のダストギャップは原料バルブをドーム
状に抄き−にけた後、必要に応じて熱硬１ヒ閉明脂等を
含浸１〜で加熱プレスして得たもの、あるには織布にフ
ェノール樹脂等を含浸した後、加熱プレスし−Ｃドーム
状に成形した後、アクリル樹脂をコーティングしたもの
がほとんどである。In other words, Narito's dust gap is obtained by cutting the raw material bulb into a dome shape, and then hot pressing it with heat-setting 1, impregnating clear resin, etc. as necessary, or using woven fabric. Most of them are impregnated with phenol resin or the like, heated and pressed to form a -C dome shape, and then coated with acrylic resin.
前記パルプ紙よりダストギャップは密度０．５〜０．８
．ヤング率１．０〜２． ＯＸ １０ ””ｙｎ／、
、内部。The dust gap has a density of 0.5 to 0.8 from the pulp paper.
．． Young's modulus 1.0-2. OX 10 ””yn/,
,internal.
スｔａｎδが０．０２〜０．０３程度であり、充分に共
融を抑制することができず第２．ｈ、＃示すごとく、２
０００ Ｈｚ〜６０００ ｆｉｚにおいて急峻なピーク
が究生する。Stan δ is about 0.02 to 0.03, and eutectic cannot be sufficiently suppressed. h, #as shown, 2
A steep peak appears between 000 Hz and 6000 fiz.
これはこの帯域においてダストキャップ（直径６１−２
中心高さ１６−のドーム状）が振動板（実効半径１０ｃ
ｍ、 ポリプロピレン？４ｊ 回動イル）と回ｆ１ン相
で共振している為であり、周波数特１１の平坦化に悪せ
しめ加熱プレスした後アクリル樹−１旨をコーテングし
た前述と同杉状のダストキャップを前述の同形、同材質
の振ｌｆｂ板に配置１６１〜だ場合で、前者に比べて高
域のピークがかなり減少するが充分でないこの発明は第
１に内゛４１〜ロスの大きいダストキャップを得、かつ
第２にヤング率の犬〜いダスＩ・キャップを得ることに
より、前記共ｔｌｉｉ ”；＋Ｈ１ｌｌｌ ４１４１１
するとともに、振動板の中心部分の１１径ノブ向の機械
的強度を増大せしめることができるダス］・キャップで
熱可朔殴明脂又は熱硬化ｔ’ｌ： 、ｉ右４１指にチタ
ン酸カリウムの単結晶繊維を混入したＨ刺より成１ヒ１
．たダストキャップであって以Ｆ実施例について説明す
る〔実施例〕
ポリプロピレンに１５ｗｔ％のチタン酸カリウムの単結
晶繊維（繊イイ（−１ぐ１０／（Ｉｎ〜２０μｍ１繊維
径０゜２〜０．５７ｚｍ）を混入１（７打してペレット
を成製する当該ベレットを射出押出し成形により０．５
頭厚のフィルムを成形した。This is because the dust cap (diameter 61-2
The diaphragm (dome shape with center height 16cm) is the diaphragm (effective radius 10c)
m, polypropylene? This is because it resonates in the rotational f1 phase with the rotary coil (4j), which worsens the flattening of the frequency characteristic (11). When placed on a swing lfb board of the same shape and the same material as 161~, the high frequency peak is considerably reduced compared to the former, but it is not sufficient.This invention firstly obtains a dust cap with a large loss of 41~. And secondly, by obtaining the Young's modulus I-das I Cap, the above-mentioned tlii'';
At the same time, it is possible to increase the mechanical strength of the center part of the diaphragm toward the 11-diameter knob.The cap is heated with thermoplastic resin or heat-cured resin.The right 41 finger is coated with potassium titanate. Made from H thorns mixed with monocrystalline fibers.
．． [Example] A single crystal fiber of 15 wt% potassium titanate in polypropylene (-1g10/(In~20μm1 fiber diameter 0°2~0. Mix 1 (57zm) with 1 (7 strokes to form pellets.)
A head-thick film was formed.
そ１〜で当該フィルｌ−を真空成形により直径６１、、
最大高さ１６．、のドーム状に成形した。In step 1~, the fill l- was vacuum formed to have a diameter of 61 mm.
Maximum height 16. It was formed into a dome shape.
当該ドーム状ダストキャップは密度１．２０・ヤング率
５． Ｉ Ｘ １０”’ｄＶｎイ；、）、ｔａｎδ０．
Ｏ６５の値を得ることができた。The dome-shaped dust cap has a density of 1.20 and a Young's modulus of 5. I x 10'''dVn;, ), tan δ0.
We were able to obtain the O65 value.
そし−Ｃ当当該ストキャップを実効半径１０ｃ＋＋＋の
化せしめることができた。これは本発明のダストキャッ
プの内部ロスが著しく大きい為、共振抑制作用が極めて
顕著であることを立証するものである。Then, it was possible to make the stop cap in question have an effective radius of 10c+++. This proves that since the internal loss of the dust cap of the present invention is extremely large, the resonance suppressing effect is extremely significant.
又、この発明のダストキャップは混入したチタン酸カリ
ウムの単結晶繊維の弾性率が非常に大きい（２８０００
に＋；／−以−ヒ）であることからヤング率が従来のも
のに比較して大きく、振動板の中心部の径方向の剛訃の
補強、及び振動板の中心に固定されたコイルボビンの径
方向の剛１’ｌＥ ｉ補強することができ、振動板の横
方向の変形＝やコイルボビンの吊鐘振勅によるボイスコ
イルすれを同市す、る効果も有する。In addition, in the dust cap of this invention, the elastic modulus of the single crystal fiber of potassium titanate mixed in is very high (28,000
The Young's modulus is larger than that of the conventional one, and the stiffness in the radial direction at the center of the diaphragm is reinforced, and the coil bobbin fixed at the center of the diaphragm is It can strengthen the stiffness in the radial direction, and also has the effect of suppressing the voice coil rubbing caused by the lateral deformation of the diaphragm and the hanging force of the coil bobbin.
上記実施例において熱可塑性樹脂としてポリプロピレン
を使用した場合について述べたが、この発明に適用でき
える上記樹脂としてはポリプロピレンの他に、たとえば
ポリエチレン等の熱可＃１ｌＪｌ’、１樹脂、フェノー
ル樹脂、メラミン樹脂、ユリア樹脂等の熱硬化訃樹脂等
がある。In the above embodiment, the case where polypropylene was used as the thermoplastic resin was described, but in addition to polypropylene, examples of the resin that can be applied to this invention include thermoplastic #1lJl', 1 resin such as polyethylene, phenolic resin, melamine resin, etc. There are thermosetting resins such as resins and urea resins.
以上に説明したごとく、この発明はチタン酸カリウムの
単結晶繊維を混入しだ熱可贈匪明脂又は熱硬化性樹脂よ
り成形してなるダストキャップであって、内部ロスが犬
なることによりダストキャノブを共県を抑１１ｉｌＩ
Ｌ、周波救特Ｐ１を平坦化せしめるとともＶζ、ヤング
率が火なることによって振動板及びコイルボビンの補強
作中を撃し、振動板の変形−やボイス−１・１ルすれを
防止する効果を有し、咀にｒ１貞空ＴＲ杉等により肘産
計にすぐれた利点を有するものである。As explained above, the present invention is a dust cap molded from thermoplastic resin or thermosetting resin mixed with monocrystalline fibers of potassium titanate. The joint prefecture is suppressed 11ilI
By flattening L and frequency relief P1, the Young's modulus of Vζ increases, which strengthens the diaphragm and coil bobbin, and prevents deformation of the diaphragm and voice 1.1 leakage. It has excellent advantages in terms of elbow production due to r1 Sadaku TR Cedar etc. in the mouth.
第１１ν１１はコーンノ１μスピーカーの１析面図、第
２１９１はこの発明実１ｆｆｆ） Ｉｌｌのダストキャ
ンプ及び従来のダストキャップを用いたコーンＪＩｉｊ
１．スピーカーの周波数特訃図である。
特許出願人 オンキヨー株式会社
代；４１１人 プＰ理士 佐 常 ｌ−太 部周＄数
（Ｈ７）→
第２１．ｍNo. 11v11 is an analytical view of a cone 1μ speaker, and No. 2191 is a diagram of the present invention (1fff) Ill's dust camp and cone JIij using a conventional dust cap.
1. It is a frequency characteristic diagram of a speaker. Patent applicant: Onkyo Co., Ltd.; 411 people P.P.R.S. Tsune L-Ta Bu Shu $ number (H7) → 21st. m
Claims (1)
してなるス・１〜川σＩ’ｌｌ’ト団脂又は熱硬化ＫＩ
Ｅ向脂を成形してなるスピーカーのダストギヤツブ。 ２、 熱ｏＪ Ｑｊ、 １４１＝ｉｌｌ ’Ｉ旨がボリ
フ゛口ビレンであることを特徴とする特許、ｔ’＋Ｖ
、ｉｋの範囲第１１ｐ紀載のスピーカーのダストキャン
プ。[Claims] 1. Titanium dredge? 1'I crystal fibers, mixture of soybeans, 1~kawa σI'll'to aggregate or thermosetting KI
A speaker dust gear made of molded resin. 2. Heat oJ Qj, 141=ill 'I patent characterized in that it is a polygonal mouth, t'+V
, ik range 11p journal speaker dust camp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2155882A JPS58139596A (en) | 1982-02-13 | 1982-02-13 | Dust cap of speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2155882A JPS58139596A (en) | 1982-02-13 | 1982-02-13 | Dust cap of speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58139596A true JPS58139596A (en) | 1983-08-18 |
Family
ID=12058331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2155882A Pending JPS58139596A (en) | 1982-02-13 | 1982-02-13 | Dust cap of speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58139596A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6184999A (en) * | 1984-10-03 | 1986-04-30 | Pioneer Electronic Corp | Center-cap for acoustic diaphragm |
| EP1718106A1 (en) * | 2004-02-18 | 2006-11-02 | Matsushita Electric Industrial Co., Ltd. | Speaker, speaker-use diaphragm, dust cap, production methods and production devices for them |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58107798A (en) * | 1981-12-22 | 1983-06-27 | Matsushita Electric Ind Co Ltd | Diaphragm system for speaker |
-
1982
- 1982-02-13 JP JP2155882A patent/JPS58139596A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58107798A (en) * | 1981-12-22 | 1983-06-27 | Matsushita Electric Ind Co Ltd | Diaphragm system for speaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6184999A (en) * | 1984-10-03 | 1986-04-30 | Pioneer Electronic Corp | Center-cap for acoustic diaphragm |
| JPH058637B2 (en) * | 1984-10-03 | 1993-02-02 | Paionia Kk | |
| EP1718106A1 (en) * | 2004-02-18 | 2006-11-02 | Matsushita Electric Industrial Co., Ltd. | Speaker, speaker-use diaphragm, dust cap, production methods and production devices for them |
| EP1718106A4 (en) * | 2004-02-18 | 2011-02-02 | Panasonic Corp | Speaker, speaker-use diaphragm, dust cap, production methods and production devices for them |
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