JPH0654398U - Speaker - Google Patents
SpeakerInfo
- Publication number
- JPH0654398U JPH0654398U JP8917592U JP8917592U JPH0654398U JP H0654398 U JPH0654398 U JP H0654398U JP 8917592 U JP8917592 U JP 8917592U JP 8917592 U JP8917592 U JP 8917592U JP H0654398 U JPH0654398 U JP H0654398U
- Authority
- JP
- Japan
- Prior art keywords
- voice coil
- speaker
- coil
- heat dissipation
- diaphragm
- 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.)
- Withdrawn
Links
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
(57)【要約】
【目的】 ボイスコイルのジュール熱を外部空間へ放熱
しやすくし、かつコイルボビンを補強することにより、
高出力であってもボイスコイルが焼損する虞がなく、か
つ駆動時の共振変形が防止できるスピーカを提供する。
【構成】 ボイスコイル４に隣接させつつコイルボビン
５に外嵌されて該ボイスコイル４と略同等の外径を有す
る筒部１２ａと、該筒部１２ａから外側へ延びて振動板
６の背面側の空間１３を臨む鍔部１２ｂとを設けた非磁
性材からなる放熱板１２を備え、フレーム９の透孔部分
９ａを介して外部空間１４と放熱板１２の周囲の空間と
を連通せしめた。
(57) [Abstract] [Purpose] By making it easier to radiate the Joule heat of the voice coil to the external space, and by reinforcing the coil bobbin,
(EN) Provided is a speaker capable of preventing the voice coil from being burned out even at a high output and preventing resonance deformation during driving. A cylindrical portion 12a that is fitted to a coil bobbin 5 while being adjacent to the voice coil 4 and has an outer diameter substantially equal to that of the voice coil 4; The heat radiating plate 12 made of a non-magnetic material provided with the flange portion 12b facing the space 13 was provided, and the external space 14 and the space around the heat radiating plate 12 were made to communicate with each other through the through hole portion 9a of the frame 9.
Description
【０００１】[0001]
本考案は、ダイナミックコーンスピーカとも称されるスピーカに係り、特に、 高出力のスピーカの放熱対策に関する。 The present invention relates to a speaker which is also called a dynamic cone speaker, and particularly relates to a heat dissipation measure for a high output speaker.
【０００２】[0002]
図４は、この種のスピーカの従来例を示す断面図である。 FIG. 4 is a cross-sectional view showing a conventional example of this type of speaker.
【０００３】 同図に例示したスピーカは、センターポール１ａを立設したヨーク１と、この ヨーク１上に載置されてセンターポール１ａを取り巻くリング状のマグネット２ と、このマグネット２上に載置されたトッププレート３とによって磁気回路が構 成されており、センターポール１ａの外周面とトッププレート３の内周面との間 に形成されたギャップＧ内に、振動系のボイスコイル４が配置されている。そし て、このボイスコイル４を巻装しているコイルボビン５は、コーン紙等からなり 円錐面を呈する振動板６の内周部に取着されていて、この振動板６は、その外周 部がコーンエッジ７を介して、また内周部がダンパ８を介して、鉄板等からなる フレーム９に支持されており、このフレーム９はトッププレート３に固定されて いるので、磁気回路中でボイスコイル４を駆動させると、コイルボビン５を介し て振動板６が振動するようになっている。なお、図中の符号１０はガスケット、 １１はセンターキャップをそれぞれ示している。The loudspeaker illustrated in FIG. 1 has a yoke 1 on which a center pole 1 a is erected, a ring-shaped magnet 2 placed on the yoke 1 and surrounding the center pole 1 a, and placed on the magnet 2. A magnetic circuit is configured by the formed top plate 3, and the voice coil 4 of the vibration system is arranged in a gap G formed between the outer peripheral surface of the center pole 1a and the inner peripheral surface of the top plate 3. Has been done. The coil bobbin 5 around which the voice coil 4 is wound is attached to the inner peripheral portion of a diaphragm 6 made of cone paper or the like and having a conical surface, and the outer peripheral portion of the diaphragm 6 is attached. A frame 9 made of an iron plate or the like is supported via a cone edge 7 and an inner peripheral portion via a damper 8. Since the frame 9 is fixed to the top plate 3, a voice coil is used in a magnetic circuit. When 4 is driven, the diaphragm 6 vibrates via the coil bobbin 5. In the figure, reference numeral 10 is a gasket, and 11 is a center cap.
【０００４】[0004]
しかしながら、上述した従来のスピーカは、駆動時にボイスコイル４から発せ られるジュール熱が放熱されにくいので、特に高出力でボイスコイル４からの発 熱量が多いスピーカの場合、温度上昇によりボイスコイル４が焼損しやすいとい う不具合があった。また、コイルボビン５の先端側にはボイスコイル４が巻装さ れないので駆動時の共振変形に対する補強が十分でなく、そのため共振変形によ りギャップＧ内におけるボイスコイル４とトップレート３との間隔が狂って音質 劣化やボイスコイル４のタッチ断線を招来する虞があった。 However, in the above-mentioned conventional speaker, since the Joule heat generated from the voice coil 4 is hard to be dissipated during driving, particularly in the case of a speaker with a high output and a large amount of heat generated from the voice coil 4, the voice coil 4 is burned out due to the temperature rise. There was a problem that it was easy to do. In addition, since the voice coil 4 is not wound around the tip end of the coil bobbin 5, reinforcement against resonance deformation during driving is not sufficient, and therefore the voice coil 4 and the top rate 3 in the gap G due to resonance deformation. There is a possibility that the intervals may be changed and the sound quality may be deteriorated and the voice coil 4 may be disconnected from the touch.
【０００５】 本考案はかかる従来技術の課題に鑑みてなされたもので、その目的は、高出力 であってもボイスコイルが焼損する虞がなく、かつ駆動時の共振変形が防止でき るスピーカを提供することにある。The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a speaker that can prevent the voice coil from being burned out even at a high output and can prevent the resonance deformation during driving. To provide.
【０００６】[0006]
本考案の上述した目的は、フレームに支持された振動板の内周部にボイスコイ ルのコイルボビンが一体化してあり、磁気回路中に配置した上記ボイスコイルを 介して上記振動板を振動させるスピーカにおいて、上記ボイスコイルに隣接させ つつ上記コイルボビンに外嵌されて該ボイスコイルと略同等の外径を有する筒部 と、該筒部から外側へ延びて上記振動板の背面側の空間を臨む鍔部とを設けた非 磁性材からなる放熱板を備え、上記フレームの透孔部分を介して外部空間と上記 放熱板の周囲の空間とを連通せしめることによって達成される。 The above-described object of the present invention is to provide a speaker in which the coil bobbin of the voice coil is integrated with the inner peripheral portion of the diaphragm supported by the frame, and the diaphragm is vibrated via the voice coil arranged in the magnetic circuit. A tubular portion which is fitted to the coil bobbin while being adjacent to the voice coil and has an outer diameter substantially equal to that of the voice coil; and a flange portion which extends outward from the tubular portion and faces a space on the back side of the diaphragm. This is achieved by providing a heat dissipation plate made of a non-magnetic material provided with and connecting the external space and the space around the heat dissipation plate through the through hole portion of the frame.
【０００７】[0007]
上述した手段によれば、駆動時にボイスコイルから発せられるジュール熱が放 熱板を伝導するので、外部空間と連通している振動板の背面側の空間に該ジュー ル熱を逃がすことができて放熱効果が高まり、また、コイルボビンに放熱板の筒 部を外嵌させることで機械的強度が高まるので、駆動時の共振変形に対する補強 が行え、また、該筒部の外径はボイスコイルと略同等なので磁気回路のギャップ 寸法には何ら影響を与えない。 According to the above-mentioned means, the Joule heat generated from the voice coil at the time of driving is conducted to the heat radiation plate, so that the jule heat can be released to the space on the back side of the diaphragm communicating with the external space. The heat dissipation effect is enhanced, and the mechanical strength is increased by fitting the tubular part of the radiator plate onto the coil bobbin, so it is possible to reinforce against the resonance deformation during driving, and the outer diameter of the tubular part is almost the same as the voice coil. Since they are equivalent, they have no effect on the gap size of the magnetic circuit.
【０００８】[0008]
以下、本考案の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
【０００９】 図１は本考案の一実施例に係るスピーカの部分断面図、図２は図１に示す放熱 板の平面図で、従来例の説明に用いた図４と対応する各部には同一符号が付して ある。FIG. 1 is a partial cross-sectional view of a speaker according to an embodiment of the present invention, and FIG. 2 is a plan view of a heat dissipation plate shown in FIG. 1, in which parts corresponding to those in FIG. It is marked.
【００１０】 図１に示すスピーカは、ボイスコイル４を巻装しているコイルボビン５に、ア ルミニウム等の熱伝導性に富む非磁性材からなる放熱板１２を付設した点が、前 述した従来例と大きく異なっている。すなわち、このスピーカは、センターポー ル１ａを立設したヨーク１と、ヨーク１上に載置されてセンターポール１ａを取 り巻くリング状のマグネット２と、マグネット２上に載置されたトッププレート ３とによって構成される磁気回路のギャップＧ内に、コイルボビン５に巻回した ボイスコイル４を配置させているが、このコイルボビン５にはボイスコイル４が 巻装されていない個所に放熱板１２が取り付けてあり、この放熱板１２の先端部 はダンパ８に支持されている。In the speaker shown in FIG. 1, the coil bobbin 5 around which the voice coil 4 is wound is additionally provided with a heat radiating plate 12 made of a non-magnetic material having a high thermal conductivity such as aluminum and the like. It is very different from the example. That is, this speaker is composed of a yoke 1 in which a center pole 1a is erected, a ring-shaped magnet 2 placed on the yoke 1 and surrounding the center pole 1a, and a top plate placed on the magnet 2. Although the voice coil 4 wound around the coil bobbin 5 is arranged in the gap G of the magnetic circuit constituted by 3 and 3, the heat sink 12 is provided at a place where the voice coil 4 is not wound around the coil bobbin 5. It is attached, and the tip of the heat dissipation plate 12 is supported by the damper 8.
【００１１】 上記放熱板１２は、ボイスコイル４に隣接させてコイルボビン５に外嵌させた 筒部１２ａと、筒部１２ａから外側へ延びてダンパ８に取着された鍔部１２ｂと で構成される漏斗形状の板材で、筒部１２ａの外径はボイスコイル４の外径と同 寸法に形成してあり、鍔部１２ｂには図２に示すように複数個所に、表裏両面の 空間を連通させる切り起こし部１２ｃが形成してある。また、鍔部１２ｂの片面 は振動板６の背面側の空間１３に臨出させてあり、この空間１３はフレーム９の 透孔部分９ａを介して外部空間１４と連通しているので、鍔部１２ｂは常に外部 の空気に晒されている。The heat radiating plate 12 is composed of a tubular portion 12 a that is adjacent to the voice coil 4 and externally fitted to the coil bobbin 5, and a flange portion 12 b that extends outward from the tubular portion 12 a and is attached to the damper 8. The outer diameter of the cylindrical portion 12a is formed to be the same as the outer diameter of the voice coil 4, and the flange portion 12b communicates with a plurality of places, as shown in FIG. A cut and raised portion 12c is formed. Further, one side of the flange portion 12b is exposed to the space 13 on the back side of the diaphragm 6, and this space 13 communicates with the external space 14 through the through hole portion 9a of the frame 9, so that the flange portion is formed. 12b is always exposed to the outside air.
【００１２】 なお、コイルボビン５は先端部が振動板６の内周部に取着されていて、振動板 ６の外周部はコーンエッジ７を介してフレーム９に支持されており、このフレー ム９はトッププレート３に固定されているので、磁気回路中でボイスコイル４を 駆動させると、コイルボビン５を介して振動板６が振動するようになっている。 また、図１中の符号１０はガスケット、１１はセンターキャップをそれぞれ示し ている。The tip of the coil bobbin 5 is attached to the inner peripheral portion of the diaphragm 6, and the outer peripheral portion of the diaphragm 6 is supported by the frame 9 via the cone edge 7. Is fixed to the top plate 3, so that when the voice coil 4 is driven in the magnetic circuit, the diaphragm 6 vibrates via the coil bobbin 5. Reference numeral 10 in FIG. 1 denotes a gasket, and 11 denotes a center cap.
【００１３】 このようにコイルボビン５に放熱板１２を付設したスピーカは、駆動時にボイ スコイル４から発せられるジュール熱が放熱板１２の筒部１２ａから鍔部１２ｂ へと速やかに伝導していくので、フレーム９の透孔部分９ａを介して外部の空気 に晒されている該鍔部１２ｂから空間１３内へ容易にジュール熱を逃がすことが できる。しかも、駆動時に放熱板１２の切り起こし部１２ｃによって鍔部１２ｂ の表裏両面の空気が入れ替わりやすいので、ボイスコイル４や筒部１２ａの周囲 に発せられたジュール熱も外部へ容易に逃がすことができる。つまり、このスピ ーカは放熱効果が極めて高くなっているので、高出力でボイスコイル４からの発 熱量が多い場合にも、温度上昇による該ボイスコイル４の焼損が防止できて信頼 性が大幅に向上する。As described above, in the speaker having the heat dissipation plate 12 attached to the coil bobbin 5, the Joule heat generated from the voice coil 4 during driving is rapidly conducted from the cylindrical portion 12a of the heat dissipation plate 12 to the flange portion 12b. It is possible to easily release the Joule heat from the collar portion 12b exposed to the outside air into the space 13 through the through hole portion 9a of the frame 9. Moreover, since air on both the front and back surfaces of the collar portion 12b is easily replaced by the cut-and-raised portion 12c of the heat dissipation plate 12 during driving, the Joule heat generated around the voice coil 4 and the tubular portion 12a can be easily released to the outside. . In other words, this speaker has an extremely high heat dissipation effect, so even if the output from the voice coil 4 is high and the amount of heat generated from the voice coil 4 is large, it is possible to prevent the voice coil 4 from being burnt out due to the temperature rise, and the reliability is greatly improved. Improve to.
【００１４】 また、上記実施例は、コイルボビン５に放熱板１２の筒部１２ａを外嵌させる ことで機械的強度を高めているので、駆動時に共振変形が起こりにくくなってい る。その結果、ギャップＧ内におけるボイスコイル４とトップレート３との間隔 が共振変形で狂う心配がなくなり、音質劣化やボイスコイル４のタッチ断線が防 止できて信頼性が一層向上している。Further, in the above-described embodiment, the mechanical strength is increased by externally fitting the tubular portion 12a of the heat dissipation plate 12 to the coil bobbin 5, so that resonance deformation is less likely to occur during driving. As a result, the distance between the voice coil 4 and the top rate 3 in the gap G is not affected by resonance deformation, and deterioration of sound quality and touch disconnection of the voice coil 4 can be prevented and reliability is further improved.
【００１５】 なお、放熱板１２の筒部１２ａの外径はボイスコイル４の外径と同等なので、 放熱板１２を付設しても磁気回路のギャップＧの寸法を変える必要はない。Since the outer diameter of the cylindrical portion 12a of the heat dissipation plate 12 is equal to the outer diameter of the voice coil 4, it is not necessary to change the size of the gap G of the magnetic circuit even if the heat dissipation plate 12 is attached.
【００１６】 図３は本考案の他の実施例に係るスピーカの部分断面図で、図１と対応する各 部には同一符号が付してある。FIG. 3 is a partial cross-sectional view of a speaker according to another embodiment of the present invention, in which parts corresponding to those in FIG. 1 are designated by the same reference numerals.
【００１７】 図３に示すスピーカは、放熱板１２の鍔部１２ｂを振動板６の内周部に取着す ることにより、コイルボビン５を該鍔部１２ｂを介して振動板６に一体化し、放 熱板１２の筒部１２ａをダンパ８に取着した点が、前記実施例と異なっている。In the speaker shown in FIG. 3, by attaching the flange portion 12b of the heat dissipation plate 12 to the inner peripheral portion of the diaphragm 6, the coil bobbin 5 is integrated with the diaphragm 6 via the flange portion 12b. The difference from the above embodiment is that the cylindrical portion 12a of the heat dissipation plate 12 is attached to the damper 8.
【００１８】[0018]
以上説明したように、本考案によるスピーカは、駆動時にボイスコイルから発 せられるジュール熱を放熱板を介して外部空間へ逃がすことができるので、高出 力で発熱量が多い場合にもボイスコイルの焼損が回避できるという顕著な効果が あり、また、コイルボビンに放熱板の筒部を外嵌させて機械的強度を高めている ので、駆動時の共振変形が防止できて音質劣化やボイスコイルのタッチ断線が回 避できるという効果がある。 As described above, the speaker according to the present invention can release the Joule heat generated from the voice coil to the external space through the heat dissipation plate during driving, so that the voice coil can generate high output power and generate a large amount of heat. This has the remarkable effect of avoiding burnout of the coil.In addition, since the coil bobbin is fitted with the cylindrical part of the heat dissipation plate to increase the mechanical strength, resonance deformation during driving can be prevented and sound quality deterioration and voice coil This has the effect of avoiding touch disconnection.
【図１】本考案の一実施例に係るスピーカの部分断面図
である。FIG. 1 is a partial cross-sectional view of a speaker according to an embodiment of the present invention.
【図２】図１に示す放熱板の平面図である。FIG. 2 is a plan view of the heat dissipation plate shown in FIG.
【図３】本考案の他の実施例に係るスピーカの部分断面
図である。FIG. 3 is a partial cross-sectional view of a speaker according to another embodiment of the present invention.
【図４】従来例を示す断面図である。FIG. 4 is a cross-sectional view showing a conventional example.
１ ヨーク ２ マグネット ３ トッププレート ４ ボイスコイル ５ コイルボビン ６ 振動板 ８ ダンパ ９ フレーム ９ａ 透孔部分 １２ 放熱板 １２ａ 筒部 １２ｂ 鍔部 １２ｃ 切り起こし部 1 yoke 2 magnet 3 top plate 4 voice coil 5 coil bobbin 6 diaphragm 8 damper 9 frame 9a through hole portion 12 heat sink 12a tube portion 12b collar portion 12c cut and raised portion
Claims (2)
ボイスコイルのコイルボビンが一体化してあり、磁気回
路中に配置した上記ボイスコイルを介して上記振動板を
振動させるスピーカにおいて、上記ボイスコイルに隣接
させつつ上記コイルボビンに外嵌されて該ボイスコイル
と略同等の外径を有する筒部と、該筒部から外側へ延び
て上記振動板の背面側の空間を臨む鍔部とを設けた非磁
性材からなる放熱板を備え、上記フレームの透孔部分を
介して外部空間と上記放熱板の周囲の空間とを連通せし
めたことを特徴とするスピーカ。1. A speaker in which a coil bobbin of a voice coil is integrated with an inner peripheral portion of a diaphragm supported by a frame, the speaker vibrating the diaphragm via the voice coil arranged in a magnetic circuit, Provided is a tubular portion that is externally fitted to the coil bobbin while being adjacent to the coil and has an outer diameter substantially equal to that of the voice coil, and a flange portion that extends outward from the tubular portion and faces a space on the back side of the diaphragm. A speaker comprising a heat dissipation plate made of a non-magnetic material, and an external space and a space around the heat dissipation plate are communicated with each other through a through hole portion of the frame.
上記鍔部に、その表裏両面の空間を連通させる切り起こ
し部を形成したことを特徴とするスピーカ。2. The speaker according to claim 1, wherein a cut-and-raised portion is formed in the flange portion of the heat dissipation plate so as to connect spaces on both front and back surfaces thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8917592U JPH0654398U (en) | 1992-12-28 | 1992-12-28 | Speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8917592U JPH0654398U (en) | 1992-12-28 | 1992-12-28 | Speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0654398U true JPH0654398U (en) | 1994-07-22 |
Family
ID=13963446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8917592U Withdrawn JPH0654398U (en) | 1992-12-28 | 1992-12-28 | Speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0654398U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002271890A (en) * | 2001-03-09 | 2002-09-20 | Onkyo Corp | Small-sized speaker |
-
1992
- 1992-12-28 JP JP8917592U patent/JPH0654398U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002271890A (en) * | 2001-03-09 | 2002-09-20 | Onkyo Corp | Small-sized speaker |
| JP4529038B2 (en) * | 2001-03-09 | 2010-08-25 | オンキヨー株式会社 | Small speaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19970306 |