JPS645593U - - Google Patents
Info
- Publication number
- JPS645593U JPS645593U JP9922787U JP9922787U JPS645593U JP S645593 U JPS645593 U JP S645593U JP 9922787 U JP9922787 U JP 9922787U JP 9922787 U JP9922787 U JP 9922787U JP S645593 U JPS645593 U JP S645593U
- Authority
- JP
- Japan
- Prior art keywords
- back cavity
- sound absorbing
- speaker
- absorbing material
- aluminum foam
- 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
- 239000011358 absorbing material Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims 2
- 239000011491 glass wool Substances 0.000 description 1
Landscapes
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
第１図乃至第３図はこの考案の実施例を示すも
のであつて、第１図は第１の実施例を示す断面側
面図、第２図は第２の実施例を示す断面側面図、
第３図は第３の実施例を示す要部の断面側面図で
ある。第４図は従来例を示す断面側面図である。
１：スピーカユニツト、２：バツクキヤビテイ
、３：吸音材（グラスウール）、４，４１，４２
：空気層、５：発泡アルミニウム。
1 to 3 show examples of this invention, in which FIG. 1 is a sectional side view showing the first embodiment, FIG. 2 is a sectional side view showing the second embodiment,
FIG. 3 is a cross-sectional side view of main parts showing a third embodiment. FIG. 4 is a cross-sectional side view showing a conventional example. 1: Speaker unit, 2: Back cavity, 3: Sound absorbing material (glass wool), 4, 41, 42
: Air layer, 5: Foamed aluminum.
Claims (1)
して、発泡アルミニウムを充填したことを特徴と
するスピーカのバツクキヤビテイ構造。 (2) 前記バツクキヤビテイ内の吸音材として、
発泡アルミニウムと他の吸音材とを併用したこと
を特徴とする実用新案登録請求の範囲第１項記載
のスピーカのバツクキヤビテイ構造。[Scope of Claim for Utility Model Registration] (1) A back cavity structure for a speaker characterized by filling aluminum foam as a sound absorbing material in the back cavity of the speaker. (2) As a sound absorbing material in the back cavity,
A back cavity structure for a speaker according to claim 1, characterized in that aluminum foam and other sound absorbing materials are used in combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9922787U JPS645593U (en) | 1987-06-30 | 1987-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9922787U JPS645593U (en) | 1987-06-30 | 1987-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS645593U true JPS645593U (en) | 1989-01-12 |
Family
ID=31326189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9922787U Pending JPS645593U (en) | 1987-06-30 | 1987-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS645593U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02224695A (en) * | 1989-02-27 | 1990-09-06 | Hirose Mfg Co Ltd | Semi-rotary hook |
| JPH0390189A (en) * | 1989-09-02 | 1991-04-16 | Brother Ind Ltd | Half-rotating hook |
| JPH0626786U (en) * | 1992-09-08 | 1994-04-12 | ブラザー工業株式会社 | Bobbin case with slip prevention spring |
-
1987
- 1987-06-30 JP JP9922787U patent/JPS645593U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02224695A (en) * | 1989-02-27 | 1990-09-06 | Hirose Mfg Co Ltd | Semi-rotary hook |
| JPH0390189A (en) * | 1989-09-02 | 1991-04-16 | Brother Ind Ltd | Half-rotating hook |
| JPH0626786U (en) * | 1992-09-08 | 1994-04-12 | ブラザー工業株式会社 | Bobbin case with slip prevention spring |
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