JPS643436B2 - - Google Patents
Info
- Publication number
- JPS643436B2 JPS643436B2 JP11988282A JP11988282A JPS643436B2 JP S643436 B2 JPS643436 B2 JP S643436B2 JP 11988282 A JP11988282 A JP 11988282A JP 11988282 A JP11988282 A JP 11988282A JP S643436 B2 JPS643436 B2 JP S643436B2
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- acoustic
- vehicle
- panel member
- frequency
- 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.)
- Expired
Links
- 230000005284 excitation Effects 0.000 description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R11/0217—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R11/0217—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers
- B60R11/0223—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers of flat type
-
- 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
- H04R9/066—Loudspeakers using the principle of inertia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
- B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
- B60R2011/0019—Side or rear panels
- B60R2011/0024—Rear shelves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
- B60R2011/0043—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means for integrated articles, i.e. not substantially protruding from the surrounding parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
- B60R2011/0043—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means for integrated articles, i.e. not substantially protruding from the surrounding parts
- B60R2011/0045—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means for integrated articles, i.e. not substantially protruding from the surrounding parts with visible part, e.g. flush mounted
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Description
【発明の詳細な説明】
この発明は車両の内外装用等の各種パネル部材
を音響振動板として利用する車両用音響装置に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle acoustic device that utilizes various panel members for the interior and exterior of a vehicle as an acoustic diaphragm.
従来の車両用音響装置としては例えば第１図〜
第３図に示すようなものがある（特願昭54−
135114号）。まず第１図は音響用加振器であるド
ライバーＤを示すもので、円筒状のフレーム１の
前後（第１図上下）両端面にそれぞれ加振プレー
ト２およびカバープレート３が固着されてケース
体が構成され、このケース体の中央部に環状のマ
グネツト４を備えたヨーク５が配設されている。
ヨーク５はポールピース５ａおよびヨークプレー
ト５ｂからなり、これらがマグネツト４と一体と
なつて空隙部を有する磁気回路が構成され、ヨー
クプレート５ｂの部分でダンパー６を介してフレ
ーム１に弾性支持されている。また上記空隙部に
はボビンに巻回されたコイル７が配置され、その
ボビンが加振プレート２に固着されている。そし
てこのように構成されたドライバーＤが第２図お
よび第３図に示すように自動車のリヤパーセル等
を形成しているパネル部材８の背面側にフレーム
１の部分でねじ止め等により取付けられている。
このように車両用音響装置は、自動車の内外装用
のパネル部材８にドライバーＤが直接取付けられ
て、このパネル部材８の全体がそのまま音響振動
板として利用される。この音響振動板としては図
示例のような自動車の内外装用部材の他に居室の
壁板等も利用されるもので、このようなパネル部
材８等は圧縮ダンボール、またはベニヤ板等の材
質からなり一般にその外縁部等で車体等に剛的に
固定されている。 Examples of conventional vehicle audio equipment include those shown in Figure 1~
There is something like the one shown in Figure 3.
No. 135114). First, Fig. 1 shows a driver D, which is an acoustic exciter, in which an excitation plate 2 and a cover plate 3 are fixed to the front and rear (top and bottom in Fig. 1) end surfaces of a cylindrical frame 1, respectively, and a case body. A yoke 5 having an annular magnet 4 is disposed in the center of the case body.
The yoke 5 consists of a pole piece 5a and a yoke plate 5b, which together with the magnet 4 form a magnetic circuit having a gap, and are elastically supported by the frame 1 via a damper 6 at the yoke plate 5b. There is. Further, a coil 7 wound around a bobbin is arranged in the gap, and the bobbin is fixed to the vibration plate 2. As shown in FIGS. 2 and 3, the driver D configured in this manner is attached to the back side of a panel member 8 forming the rear parcel of an automobile by screws or the like at the frame 1. .
In this manner, in the vehicle acoustic device, the driver D is directly attached to the panel member 8 for the interior and exterior of the automobile, and the entire panel member 8 is used as it is as an acoustic diaphragm. This acoustic diaphragm is used not only for the interior and exterior parts of automobiles as shown in the figure, but also for the wall panels of living rooms, etc. Such panel members 8 are generally made of materials such as compressed cardboard or plywood. It is rigidly fixed to the vehicle body etc. at its outer edge.
そして音声信号がコイル７に通電されるとダン
パー６を介してマグネツト４側と、フレーム１側
即ち加振プレート２側とが相対的に振動し、この
加振プレート２等の振動でパネル部材８が加振さ
れて低音域の再生がなされる。 When the audio signal is energized to the coil 7, the magnet 4 side and the frame 1 side, that is, the excitation plate 2 side, vibrate relative to each other via the damper 6, and the vibration of the excitation plate 2 etc. causes the panel member 8 to vibrate. is vibrated to reproduce the low frequency range.
しかしながらこのような従来のパネルスピーカ
にあつては、パネル部材８の全体をそのまま音響
振動板として利用していたため、固定部を節とし
た板振動をして複数個の固有共振点を有し、この
固有共振により第４図の再生周波数特性に示すよ
うに再生出力にピーク、デイツプが現われて適正
な再生帯域幅が狭くなつてしまうという問題点が
あつた。またパネル部材８の各部が異なる位相で
振動する分割振動が生じて出力音圧レベルが低く
なり能率が低下するとともに過渡応答特性も悪い
という問題点があつた。 However, in such conventional panel speakers, since the entire panel member 8 is used as an acoustic diaphragm, the plate vibrates with the fixed part as a node and has a plurality of natural resonance points. Due to this natural resonance, peaks and dips appear in the reproduction output as shown in the reproduction frequency characteristics of FIG. 4, resulting in a problem that the appropriate reproduction bandwidth becomes narrow. Further, there is a problem in that split vibration occurs in which each part of the panel member 8 vibrates in different phases, resulting in a low output sound pressure level, a decrease in efficiency, and poor transient response characteristics.
この発明はこのような従来の問題点に着目して
なされたもので振動板として機能させる所要面積
部位を取囲むようにして適宜形状のスリツトを複
数条連設し、前記所要面積部位に剛性等増大用の
別途の振動板部材を貼設することにより上記問題
点を解決する車両用音響装置を得ることを目的と
している。 This invention was made by focusing on such conventional problems, and includes a plurality of slits of an appropriate shape so as to surround a required area portion to function as a diaphragm, and a slit for increasing rigidity, etc., is provided in the required area portion. It is an object of the present invention to provide a vehicle acoustic device that solves the above-mentioned problems by attaching a separate diaphragm member.
以下この発明を図面に基づいて説明する。第５
図および第６図はこの発明の実施例を示す図であ
る。なお第５図以下の各図において前記第１図〜
第３図に示した部材または部位と同一ないし均等
のものについては前記と同一符号を以つて示し重
複した説明を省略する。 The present invention will be explained below based on the drawings. Fifth
FIG. 6 is a diagram showing an embodiment of the present invention. In addition, in each of the figures following Figure 5, the above-mentioned Figures 1-
Components or parts that are the same as or equivalent to those shown in FIG. 3 are designated by the same reference numerals as above, and redundant explanation will be omitted.
まず構成を説明するとこの発明においては音響
用加振器たるドライバーＤが取付けられた振動部
８ｂに剛性等増大用の別途の振動板部材１２が貼
設されて、このパネル部材８からなる振動部８ｂ
および振動板部材１２ａが一体となつてパネルス
ピーカにおける振動板１２が構成されている。振
動板部材１２ａとしては振動部８ｂの剛性および
質量を増大させ得るものであれば適宜材質のもの
でよく一例としてダイラーク（商品名）等の積層
材やAl等の金属板が使用される。 First, to explain the configuration, in this invention, a separate diaphragm member 12 for increasing rigidity, etc. is attached to the vibrating part 8b to which the driver D, which is an acoustic vibrator, is attached, and the vibrating part made of this panel member 8 is attached. 8b
The diaphragm member 12a and the diaphragm member 12a are integrated to constitute the diaphragm 12 in the panel speaker. The diaphragm member 12a may be made of any suitable material as long as it can increase the rigidity and mass of the vibrating portion 8b, and for example, a laminated material such as Dilarc (trade name) or a metal plate such as Al is used.
次に作用を説明する。音声信号がコイル７に通
電されると、ドライバーＤ内においてマグネツト
４側と加振プレート２側とがダンパー６を介して
相対的に変位振動し、この振動で振動板１２が加
振されて音圧を発生し低音域の再生がなされる。
このとき振動板１２はその質量および剛性がとも
に所要量増大されているので、後述する最低共振
周波数0の表示式から明らかなようにこの最低共
振周波数0が所要値だけ低下し、振動板１２はこ
の最低共振周波数0以上の周波数でピストンモー
シヨン振動して音圧が発生する。したがつてその
再生周波数特性は第７図実線で示すように低域再
生限界がさらに低域側に延びて広帯域でかつ平坦
特性となり、過渡応答性が向上して全体して再生
周波数特性が改善される。 Next, the action will be explained. When an audio signal is energized to the coil 7, the magnet 4 side and the excitation plate 2 side are relatively displaced and vibrated within the driver D via the damper 6, and this vibration excites the diaphragm 12 to produce sound. This generates pressure and reproduces the low frequency range.
At this time, the mass and rigidity of the diaphragm 12 are both increased by the required amount, so as is clear from the expression for displaying the minimum resonant frequency 0 , which will be described later, the minimum resonant frequency 0 is lowered by the required value, and the diaphragm 12 is The piston motion vibrates at a frequency higher than this lowest resonance frequency, 0, and sound pressure is generated. Therefore, as shown by the solid line in Figure 7, the reproduction frequency characteristics have a low frequency reproduction limit that extends further to the lower side, resulting in a wide band and flat characteristic, improving transient response and improving the reproduction frequency characteristics as a whole. be done.
次に前記の最低共振周波数0の表示式を説明す
る。 Next, the expression for displaying the minimum resonance frequency 0 will be explained.
いまm1；振動板系の等価質量、k1；振動板系
のバネ定数、m2；ドライバーのマグネツト系質
量、k2；ドライバー（ダンパー）のバネ定数、ω
＝2πとし、マグネツト系質量m2にFcosωt、振
動板系質量m1に−Fcosωtの加振力が作用したと
すると、振動板系質量m1の運動を調べると運動
方程式は、
m1d2x1／dt2＋k1x1
＋k2（x1−x2）＝−Fcosωt …
m2d2x2／dt2＋k2（x2−x1）
＝Fcosωt …′
となる。また、強制振動を
x1＝a1cosωt，
x2＝a2cosωt（a1，a2；振幅） …
と仮定して、これを式に代入するとa1（および
a2）が求められて
a1＝Fm2ω2／〔−m1ω2＋k1＋k2）
（−m2ω2＋k2）−K2 2〕 …
となる。ここで最低共振周波数0は振幅a1が無限
大となるとき（機械抵抗ないと仮定）の周波数な
ので、上記式の分母を次のようにゼロとおき、
（−m1ω2＋k1＋k2）（−m2ω2＋k2）
−k2 2＝０ …
この式を満たすω（＝2π）を求め、その２
つの解のうち高い方の値と一致する。このように
して求められたのが次の式である。 m 1 ; equivalent mass of the diaphragm system, k 1 ; spring constant of the diaphragm system, m 2 ; mass of the driver's magnet system, k 2 ; spring constant of the driver (damper), ω
= 2π, and if an excitation force of Fcosωt acts on the magnet system mass m 2 and -Fcosωt acts on the diaphragm system mass m 1 , then when the motion of the diaphragm system mass m 1 is examined, the equation of motion is m 1 d 2 x 1 /dt 2 +k 1 x 1 +k 2 (x 1 −x 2 ) = −Fcosωt … m 2 d 2 x 2 /dt 2 +k 2 (x 2 −x 1 ) =Fcosωt …′. Also, assuming that the forced vibration is x 1 = a 1 cosωt, x 2 = a 2 cosωt (a 1 , a 2 ; amplitude)... and substituting this into the equation, a 1 (and
a 2 ) is calculated and becomes a 1 =Fm 2 ω 2 / [−m 1 ω 2 +k 1 +k 2 ) (−m 2 ω 2 +k 2 )−K 2 2 ] …. Here, the lowest resonance frequency 0 is the frequency when the amplitude a 1 becomes infinite (assuming there is no mechanical resistance), so the denominator of the above equation is set to zero as follows, (-m 1 ω 2 +k 1 +k 2 ) (−m 2 ω 2 +k 2 ) −k 2 2 = 0 … Find ω (=2π) that satisfies this formula, and calculate its 2
matches the higher value of the two solutions. The following formula was obtained in this way.
この式から最低共振周波数0は振動板系の等
価質量m1およびそのバネ定数k1等に依存する。
このため第５図および第６図の事例においては振
動板１２が振動板部材１２ａの貼着でその質量が
所要値だけ増大しているので上記式から明らか
なように、この増大により逆に最低共振周波数0
が所要値だけ低下するのである。 From this equation, the lowest resonance frequency 0 depends on the equivalent mass m 1 of the diaphragm system, its spring constant k 1 , etc.
Therefore, in the cases shown in FIGS. 5 and 6, the mass of the diaphragm 12 increases by the required value due to the attachment of the diaphragm member 12a, and as is clear from the above equation, this increase causes the Resonance frequency 0
is reduced by the required value.
以上詳述したようにこの発明によれば振動板と
して機能させる所要面積部位に剛性等増大用の別
途の振動板部材を貼設したから、低域再生限界が
さらに低域側に延び、かつ特性が平坦となつて広
帯域となり、また過渡応答特性が向上して全体的
に周波数特性が改善されるという効果が得られ
る。 As detailed above, according to the present invention, since a separate diaphragm member for increasing rigidity is attached to the area required to function as a diaphragm, the low frequency reproduction limit is further extended to the low frequency side, and the characteristics The effect is that the frequency characteristics are flattened to provide a wide band, the transient response characteristics are improved, and the frequency characteristics are improved overall.
第１図は従来の車両用音響装置におけるドライ
バー部分を示す一部断面側面図、第２図は従来の
車両用音響装置を示す平面図、第３図は同上車両
用音響装置の側面図、第４図は同上車両用音響装
置の再生周波数特性を示す特性曲線図、第５図は
この発明に係る車両用音響装置の実施例を示す平
面図、第６図は第５図の−線断面図、第７図
は同上実施例の再生周波数特性を示す特性曲線図
である。
８：パネル部材、８ｂ：振動部、１１：スリツ
ト、１１ａ：ビーム、１２：振動板、１２ａ：振
動板部材、Ｄ：ドライバー（音響用加振器）。
FIG. 1 is a partially sectional side view showing the driver portion of a conventional vehicle audio system, FIG. 2 is a plan view of the conventional vehicle audio system, and FIG. 3 is a side view of the same vehicle audio system. FIG. 4 is a characteristic curve diagram showing reproduction frequency characteristics of the vehicle audio device as described above, FIG. 5 is a plan view showing an embodiment of the vehicle audio device according to the present invention, and FIG. 6 is a sectional view taken along the line -- in FIG. , FIG. 7 is a characteristic curve diagram showing the reproduction frequency characteristics of the same embodiment. 8: panel member, 8b: vibrating section, 11: slit, 11a: beam, 12: diaphragm, 12a: diaphragm member, D: driver (acoustic exciter).
Claims (1)
り付けてなる車両用音響装置において、 前記パネル部材の音響用加振器取付け部を含む
所要面積部位を取囲むようにして適宜形状のスリ
ツトを複数条連設し、前記所要面積部位に剛性等
増大用の別途の振動板部材を貼設してなることを
特徴とする車両用音響装置。[Scope of Claims] 1. In a vehicle acoustic device in which an acoustic vibrator is attached to an interior/exterior panel member of a vehicle, the acoustic vibrator is appropriately installed so as to surround a required area of the panel member including the acoustic vibrator mounting portion. 1. A vehicle acoustic device characterized in that a plurality of shaped slits are arranged in series, and a separate diaphragm member for increasing rigidity is attached to the required area.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11988282A JPS5911100A (en) | 1982-07-12 | 1982-07-12 | Sound device for vehicle |
| US06/491,292 US4551849A (en) | 1982-05-11 | 1983-05-03 | Vehicle panel speaker for automotive audio system utilizing part of a vehicle panel as a sound-producing medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11988282A JPS5911100A (en) | 1982-07-12 | 1982-07-12 | Sound device for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5911100A JPS5911100A (en) | 1984-01-20 |
| JPS643436B2 true JPS643436B2 (en) | 1989-01-20 |
Family
ID=14772567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11988282A Granted JPS5911100A (en) | 1982-05-11 | 1982-07-12 | Sound device for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5911100A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7907742B2 (en) | 2003-10-31 | 2011-03-15 | Fujitsu Ten Limited | Exciter for directly vibrating board and speaker apparatus used the same |
| JP4553394B2 (en) * | 2007-02-23 | 2010-09-29 | 国立大学法人静岡大学 | Audio information transmission device |
| JP7034556B2 (en) * | 2018-12-10 | 2022-03-14 | アルパイン株式会社 | A vibration device for sound and a sounding device using the vibration device. |
| WO2024057821A1 (en) * | 2022-09-14 | 2024-03-21 | ソニーグループ株式会社 | Display device and signal processing method |
-
1982
- 1982-07-12 JP JP11988282A patent/JPS5911100A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5911100A (en) | 1984-01-20 |
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