JPS6138699U - sound absorbing structure - Google Patents

sound absorbing structure

Info

Publication number
JPS6138699U
JPS6138699U JP12279684U JP12279684U JPS6138699U JP S6138699 U JPS6138699 U JP S6138699U JP 12279684 U JP12279684 U JP 12279684U JP 12279684 U JP12279684 U JP 12279684U JP S6138699 U JPS6138699 U JP S6138699U
Authority
JP
Japan
Prior art keywords
sound absorbing
absorbing structure
cylindrical
powder particles
sound
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
Application number
JP12279684U
Other languages
Japanese (ja)
Inventor
敏夫 大川
Original Assignee
エヌデ−シ−株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by エヌデ−シ−株式会社 filed Critical エヌデ−シ−株式会社
Priority to JP12279684U priority Critical patent/JPS6138699U/en
Publication of JPS6138699U publication Critical patent/JPS6138699U/en
Pending legal-status Critical Current

Links

Landscapes

  • Powder Metallurgy (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一つの実庵例に係る吸音構造体の斜視
図、第２区はその吸音構造体における半筒状の吸音筒の
蓋の斜視図、第３図は吸音筒の一部の拡大図、第．４図
は本考案と従来例とを比較しｔこ吸音率番示すグラフで
ある。 符号１・・・・・・吸音筒、１ａ・・・・・・粉末粒子
、１ｂ・・・・・・孔隙、２・・・・・・遮音板、３・
・・・・・蓋。Figure 1 is a perspective view of a sound-absorbing structure according to one practical example of the present invention, Section 2 is a perspective view of the lid of a half-cylindrical sound-absorbing cylinder in the sound-absorbing structure, and Figure 3 is a perspective view of a sound-absorbing cylinder. Enlarged view of section, no. FIG. 4 is a graph showing the sound absorption coefficients of the present invention and the conventional example. Code 1... Sound absorbing cylinder, 1a... Powder particles, 1b... Pore, 2... Sound insulating plate, 3.
·····lid.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] Ａ１若しくはその合金の粉末粒子が互いに焼結され、こ
の粉末粒子間には連通孔隙が形成され更に少なくとも一
部が円弧状部分から成る断面を具える筒状若しくは半筒
状体の吸音筒を、遮音板等の上において隣接させて一体
に結合して成ることを特徴とする吸音構造体。A cylindrical or semi-cylindrical sound absorbing cylinder in which powder particles of A1 or its alloy are sintered together, communicating pores are formed between the powder particles, and a cross section at least partially consisting of an arcuate portion; A sound absorbing structure characterized in that it is formed by adjoining and integrally bonding on a sound insulating board or the like.
JP12279684U 1984-08-10 1984-08-10 sound absorbing structure Pending JPS6138699U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12279684U JPS6138699U (en) 1984-08-10 1984-08-10 sound absorbing structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12279684U JPS6138699U (en) 1984-08-10 1984-08-10 sound absorbing structure

Publications (1)

Publication Number Publication Date
JPS6138699U true JPS6138699U (en) 1986-03-11

Family

ID=30681553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12279684U Pending JPS6138699U (en) 1984-08-10 1984-08-10 sound absorbing structure

Country Status (1)

Country Link
JP (1) JPS6138699U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0387220U (en) * 1989-12-25 1991-09-04

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52152701A (en) * 1976-06-14 1977-12-19 Pioneer Electronic Corp Acoustic absorbing plate
JPS56127708A (en) * 1980-03-12 1981-10-06 Showa Denko Kk Aluminum based porous body
JPS5819407A (en) * 1981-07-29 1983-02-04 N D C Kk Manufacture of porous sintered body

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52152701A (en) * 1976-06-14 1977-12-19 Pioneer Electronic Corp Acoustic absorbing plate
JPS56127708A (en) * 1980-03-12 1981-10-06 Showa Denko Kk Aluminum based porous body
JPS5819407A (en) * 1981-07-29 1983-02-04 N D C Kk Manufacture of porous sintered body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0387220U (en) * 1989-12-25 1991-09-04

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