JPH0141264Y2 - - Google Patents
Info
- Publication number
- JPH0141264Y2 JPH0141264Y2 JP196685U JP196685U JPH0141264Y2 JP H0141264 Y2 JPH0141264 Y2 JP H0141264Y2 JP 196685 U JP196685 U JP 196685U JP 196685 U JP196685 U JP 196685U JP H0141264 Y2 JPH0141264 Y2 JP H0141264Y2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- slit
- cabinet
- vibration
- hole
- 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
- 238000010586 diagram Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 239000003190 viscoelastic substance Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案はスピーカーキヤビネツトに関する。[Detailed explanation of the idea] [Industrial application field] The present invention relates to a speaker cabinet.
従来より、キヤビネツトに補強桟や補強棒を取
り付けて、箱自体の機械的強度を大きくするとと
もに、バツフル板、側板および裏板の板振動を分
散、制動する方法が実用化されているが、中で
も、バツフル板の板振動を減衰させることを目的
としたものとして、たとえば実開昭58−147376号
公報がある。
Conventionally, methods have been put into practical use to increase the mechanical strength of the box itself by attaching reinforcing crosspieces and reinforcing rods to the cabinet, and to disperse and damp the plate vibrations of the full plate, side plates, and back plate. There is, for example, Japanese Utility Model Application No. 147376/1983, which aims to attenuate plate vibration of a full plate.
第７図において説明すると、バツフル板１のス
ピーカーユニツト２の周囲に板厚方向の細幅の溝
３を設け、この溝３にゴム等の粘弾性材料４を充
填した構造を有する。 Referring to FIG. 7, the baffle plate 1 has a structure in which a narrow groove 3 in the thickness direction is provided around the speaker unit 2, and the groove 3 is filled with a viscoelastic material 4 such as rubber.
バツフル板１の板振動の一要因はスピーカーユ
ニツト２の反作用によるものであるが、従来構造
はバツフル板１に溝３を設ける構造であるので、
バツフル板１の機械的強度が小さくなる。したが
つて、音響源（スピーカーユニツト）の基準とし
てのバツフル板１が振動して音響を放射しやすく
なるので、スピーカーユニツト２からの音響にバ
ツフル板１からの音響が重畳され、また、システ
ムのレスポンス特性が悪化し、過渡特性や歪特性
の悪化につながる問題点があつた。
One of the causes of the plate vibration of the baffle plate 1 is due to the reaction of the speaker unit 2, but since the conventional structure is a structure in which the buffle plate 1 is provided with grooves 3,
The mechanical strength of the buffed plate 1 is reduced. Therefore, the buffer plate 1, which serves as a reference for the sound source (speaker unit), vibrates and radiates sound more easily, so the sound from the buffer plate 1 is superimposed on the sound from the speaker unit 2, and the system There were problems in that the response characteristics deteriorated, leading to deterioration in transient characteristics and distortion characteristics.
本考案はこのような問題点を解決することを目
的とするものである。 The present invention aims to solve these problems.
本考案は、キヤビネツトの１または複数の側板
に、バツフル板の板面とほぼ平行であつて、１ま
たは複数個に分割されて全体として上記バツフル
板の幅と同一またはわずかに短いスリツト状透孔
を設けたことを特徴とするものである。
The present invention provides a slit-shaped through hole in one or more side plates of the cabinet, which is substantially parallel to the plate surface of the buff-full plate, and which is divided into one or more pieces and whose width as a whole is the same as or slightly shorter than the buff-full plate. It is characterized by having the following.
その結果、振動源としてのスピーカーユニツト
からバツフル板を通つて側板に伝搬する振動は、
スリツト状透孔によつて遮断される。
As a result, the vibration propagating from the speaker unit as a vibration source to the side plate through the baffle plate is
It is blocked by a slit-like through hole.
第１図において説明する。図中、第７図の従来
例と同等部分については同一符号を付し、その説
明は省略する。
This will be explained in FIG. In the figure, the same parts as those of the conventional example shown in FIG. 7 are given the same reference numerals, and the explanation thereof will be omitted.
キヤビネツトの各側板５ａ，５ｂ，６ａ，６ｂ
のバツフル板１の近傍に、このバツフル板１の板
面と平行であつて、かつ、バツフル板１の幅と同
一またはわずかに短いスリツト状透孔７をそれぞ
れ形成する。 Each side plate 5a, 5b, 6a, 6b of the cabinet
A slit-like through hole 7 is formed in the vicinity of the buffle plate 1, which is parallel to the plate surface of the buffle plate 1 and is equal to or slightly shorter in width than the buffle plate 1.
次に、本実施例において、キヤビネツトの各部
の寸法（単位はmm）を第２図のように定め、
外径250×280×200、透孔２×226
ｔ＝12、l1＝15、l2＝20、l3＝12
l4＝２、l5＝100、l6＝140
バツフル板１の中央にスピーカーユニツトと同
等構造の加振器８を取り付け、この加振器８によ
りバツフル板１にインパルスの振動を与えて、各
部
P1：加振器フレーム
P2：同フレームの近傍
P3：側板の中心
P4：裏板の中心
における振動応答波形の測定結果を第３図に示
す。 Next, in this example, the dimensions of each part of the cabinet (unit: mm) are determined as shown in Figure 2: outer diameter 250 x 280 x 200, through hole 2 x 226, t = 12, l 1 = 15, l 2 = 20, l 3 = 12 l 4 = 2, l 5 = 100, l 6 = 140 A vibrator 8 having the same structure as the speaker unit is attached to the center of the buffer board 1. Figure 3 shows the measurement results of vibration response waveforms at each part P1 : Vibrator frame P2 : Near the same frame P3 : Center of side plate P4 : Center of back plate.
測定結果によると、第８図の同外径、同板厚の
キヤビネツト（第７図のキヤビネツトの溝、粘弾
性材料の充填なし）の測定結果と比較して明らか
なように、バツフル板１から側板に伝搬される振
動がスリツト状透孔７によつて遮断されているこ
とが確認できる。 According to the measurement results, as is clear from comparison with the measurement results of the cabinet with the same outer diameter and the same plate thickness in Fig. 8 (the groove of the cabinet in Fig. 7, without filling with viscoelastic material), it is clear that It can be confirmed that the vibration propagated to the side plate is blocked by the slit-like through hole 7.
第４図は本実施例において、裏板の中心におけ
る板振動加速度周波数特性を測定した結果を示す
もので、図中、実線は本実施例、点線は従来例で
ある。 FIG. 4 shows the results of measuring the plate vibration acceleration frequency characteristics at the center of the back plate in this example, where the solid line represents this example and the dotted line represents the conventional example.
なお、本実施例において、スリツト状透孔７か
らの空気漏れを防ぐために、(イ)ゴム等の粘弾性材
料を充填する、(ロ)キヤビネツトの外側にスリツト
状透孔７を覆つて塩ビシートまたは突板を貼り付
ける、(ハ)キヤビネツトの内側にスリツト状透孔７
を覆つてゴムシートを貼り付ける、などの手段が
構じられる。 In this embodiment, in order to prevent air leakage from the slit-like through holes 7, (a) filling with a viscoelastic material such as rubber, and (b) covering the slit-like through holes 7 with a PVC sheet on the outside of the cabinet. Or paste the veneer, (c) slit-shaped through hole 7 inside the cabinet.
Possible methods include covering the area with a rubber sheet.
第５図は、上記実施例において、スリツト状透
孔７を２つのスリツト状透孔７ａ，７ｂに分割
し、全体として上記実施例におけるスリツト状透
孔７と同等の作用効果を奏するようにしたもので
ある。 FIG. 5 shows that in the above embodiment, the slit-shaped through hole 7 is divided into two slit-shaped through holes 7a and 7b, so that the same effect as the slit-shaped through hole 7 in the above embodiment can be achieved as a whole. It is something.
第６図は本考案の他の実施例を示すもので、ス
リツト状透孔７の長辺に沿つて各側板の内側に補
強桟９を取り付けたものである。本実施例では、
補強桟９によつてキヤビネツトが補強されるとと
もに、スリツト状透孔７と補強桟９とによつてバ
スレフポートと実質的に等価な機能を実現するこ
とができる。 FIG. 6 shows another embodiment of the present invention, in which reinforcing bars 9 are attached to the inside of each side plate along the long side of the slit-like through hole 7. In this example,
The cabinet is reinforced by the reinforcing bar 9, and the slit-shaped through hole 7 and reinforcing bar 9 can realize a function substantially equivalent to a bass reflex port.
なお、上記の各実施例において、スリツト状透
孔７は１または複数の側板に形成しても実用上充
分な振動減衰効果が得られ、この場合、各側板お
よび裏板の板振動モードを分散できる特徴があ
る。 In each of the above embodiments, a practically sufficient vibration damping effect can be obtained even if the slit-shaped through holes 7 are formed in one or more side plates, and in this case, the plate vibration modes of each side plate and back plate are dispersed. There are features that allow it.
以上の構成によると、バツフル板１の機械的強
度を低下させることなく、スピーカーユニツト２
からバツフル板１を通つて側板、裏板に伝搬する
振動がスリツト状透孔７によつて遮断されるの
で、側板および裏板の振動が著しく低減され、板
振動に伴う諸特性の悪化が改善される。
According to the above configuration, the speaker unit 2 can be mounted without reducing the mechanical strength of the buffer board 1.
Since the vibration propagating from the side plate to the side plate and back plate through the baffle plate 1 is blocked by the slit-shaped through hole 7, the vibration of the side plate and back plate is significantly reduced, and the deterioration of various characteristics caused by plate vibration is improved. be done.
第１図は本考案のスピーカーキヤビネツトの一
実施例の構造を示す図、第２図は同、各部の寸法
を表わす図、第３図は同、インパルスに対する各
部の板振動応答波形図、第４図は同、裏板の板振
動加速度周波数特性図、第５図および第６図は本
考案の他の実施例の構造を示す図、第７図は従来
のスピーカーキヤビネツトの構造を示す図、第８
図は同、インパルスに対する各部の板振動応答波
形図である。
１……バツフル板、５ａ，５ｂ，６ａ，６ｂ…
…側板、７……スリツト状透孔。
Fig. 1 is a diagram showing the structure of an embodiment of the speaker cabinet of the present invention, Fig. 2 is a diagram showing the dimensions of each part, and Fig. 3 is a diagram of the plate vibration response waveform of each part to an impulse. Figure 4 is a plate vibration acceleration frequency characteristic diagram of the back plate, Figures 5 and 6 are diagrams showing the structure of other embodiments of the present invention, and Figure 7 is a diagram showing the structure of a conventional speaker cabinet. Figure 8
The figure is a plate vibration response waveform diagram of each part in response to an impulse. 1... Batsuful board, 5a, 5b, 6a, 6b...
...Side plate, 7...Slit-shaped through hole.
Claims (1)
ル板１の板面とほぼ平行であつて、１または複数
個に分割されて全体として上記バツフル板１の幅
と同一またはわずかに短いスリツト状孔７を設け
たことを特徴とするスピーカーキヤビネツト。 A slit-shaped hole 7 is provided in one or more side plates of the cabinet, which is substantially parallel to the plate surface of the baffle plate 1, and which is divided into one or more pieces and whose width is the same as or slightly shorter than the width of the buffle plate 1 as a whole. A speaker cabinet characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP196685U JPH0141264Y2 (en) | 1985-01-10 | 1985-01-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP196685U JPH0141264Y2 (en) | 1985-01-10 | 1985-01-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61119491U JPS61119491U (en) | 1986-07-28 |
| JPH0141264Y2 true JPH0141264Y2 (en) | 1989-12-06 |
Family
ID=30475197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP196685U Expired JPH0141264Y2 (en) | 1985-01-10 | 1985-01-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0141264Y2 (en) |
-
1985
- 1985-01-10 JP JP196685U patent/JPH0141264Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61119491U (en) | 1986-07-28 |
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