JPH0452848B2 - - Google Patents
Info
- Publication number
- JPH0452848B2 JPH0452848B2 JP28381587A JP28381587A JPH0452848B2 JP H0452848 B2 JPH0452848 B2 JP H0452848B2 JP 28381587 A JP28381587 A JP 28381587A JP 28381587 A JP28381587 A JP 28381587A JP H0452848 B2 JPH0452848 B2 JP H0452848B2
- Authority
- JP
- Japan
- Prior art keywords
- glass wool
- wool layer
- outer tube
- layer
- sound deadening
- 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
- 239000011491 glass wool Substances 0.000 claims description 48
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000003584 silencer Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000011324 bead Substances 0.000 description 6
- 210000002268 wool Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Description
【発明の詳細な説明】
イ 発明の目的
イ−１ 産業上の利用分野
本発明は内燃機関或いはその他の騒音発生源よ
りの音を消音するために用いる消音器の製造方法
に関する。DETAILED DESCRIPTION OF THE INVENTION A. OBJECTS OF THE INVENTION A-1. Field of Industrial Application The present invention relates to a method for manufacturing a muffler used for muffling sounds from internal combustion engines or other noise sources.
イ−２ 従来技術
従来、例えば内燃機関用の消音器として、第４
図に示す如く、有孔部１を有する消音パイプ２に
おけるその有孔部１の外周に、予め筒状に成形し
て乾燥されたグラスウール層３を挿嵌し、その外
周に外管４を挿嵌して製造するようにしたものが
ある。A-2 Prior Art Conventionally, for example, as a silencer for an internal combustion engine, a fourth
As shown in the figure, a glass wool layer 3 that has been previously formed into a cylindrical shape and dried is inserted into the outer periphery of the perforated part 1 of a sound deadening pipe 2 having a perforated part 1, and an outer tube 4 is inserted into the outer periphery of the glass wool layer 3. There are some that are manufactured by fitting.
イ−３ 本発明が解決しようとする問題点
前記従来の製造方法においては、前記グラスウ
ール層３が、消音パイプ２に挿嵌される以前に既
に乾燥状態にあることから、その層は、空隙が多
く、そのため、この状態のグラスウール層３を単
に消音パイプ２の外周に挿嵌した状態では、内外
パイプの振動によりそのグラスウール層３に大き
な振動が誘発されて、その繊維が切断し、消音パ
イプ２の穴より吸引飛散しやすい問題がある。ま
た、グラスウール層３の消音パイプ２及び外管４
との密着が悪く、これらの間に空隙が発生して消
音効果を減少させる問題がある。また、グラスウ
ール層３の外周に外管４を挿嵌する場合には、乾
燥したグラスウールが外管４の挿入側端面でこす
られて、折れ飛散し、作業環境性が悪くなる。更
に、グラスウール層３の外周面と外管４の内面と
の密着性も悪く、特に、外管４の内面に、第３図
に示すような接合ビード部ｂを有すると、該部の
両側部にグラスウール層３が行き渡らず、空間部
が生じて消音性が低下したり、グラスウール層３
の挿嵌作業も行なえ難い等の問題がある。A-3 Problems to be Solved by the Present Invention In the conventional manufacturing method, the glass wool layer 3 is already in a dry state before it is inserted into the sound deadening pipe 2, so that the layer has no voids. Therefore, if the glass wool layer 3 in this state is simply inserted into the outer periphery of the noise-reducing pipe 2, the vibrations of the inner and outer pipes will induce large vibrations in the glass wool layer 3, causing the fibers to break, causing the noise-reducing pipe to There is a problem that it is easier to attract and scatter than the hole. In addition, a sound deadening pipe 2 and an outer pipe 4 made of glass wool layer 3
There is a problem in that the adhesion is poor and a gap is generated between them, reducing the sound deadening effect. Furthermore, when the outer tube 4 is inserted into the outer periphery of the glass wool layer 3, the dried glass wool is rubbed against the insertion side end surface of the outer tube 4, breaks and scatters, and the work environment becomes poor. Furthermore, the adhesion between the outer circumferential surface of the glass wool layer 3 and the inner surface of the outer tube 4 is poor, and especially when the inner surface of the outer tube 4 has a joining bead portion b as shown in FIG. The glass wool layer 3 may not be spread over the glass wool layer 3, creating a space and reducing sound deadening properties.
There are problems such as difficulty in inserting and fitting.
そこで本発明は、前記の問題点を解決する消音
器の製造方法を提案することを目的とするもので
ある。 Therefore, an object of the present invention is to propose a method for manufacturing a silencer that solves the above-mentioned problems.
ロ 発明の構成
ロ−１ 問題点を解決するための手段
本発明は前記の問題点を解決するために、有孔
部を有する消音パイプにおけるその有孔部の外周
に、無機質バインダーを含有する水溶液を含浸さ
せたグラスウール層を巻設して後、該グラスウー
ル層の未乾燥状態において、その外周に、該層の
外径より若干大径の外管を挿嵌し、その後に前記
グラスウール層を乾燥させるようにしたことを特
徴とするものである。B. Structure of the Invention B-1 Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides an aqueous solution containing an inorganic binder on the outer periphery of the perforated portion of a sound deadening pipe having a perforated portion. After winding the glass wool layer impregnated with the glass wool layer, an outer tube having a diameter slightly larger than the outer diameter of the layer is inserted around the outer periphery of the glass wool layer in an undried state, and then the glass wool layer is dried. This feature is characterized in that it allows the user to
ロ−２ 作 用
水溶液を含有するグラスウール層は、その水溶
液の表面張力によつてグラスウール相互間が密に
なり、含水前と比べて密度が大きい。この含水状
態のまゝで外管を挿嵌した後、グラスウールを乾
燥させてその水分を蒸発除去させると、そのグラ
スウール層内には、乾燥状態の嵩まで復元膨脹し
ようとする力が作用するが、外管によつてその膨
脹が抑制される。そのため、その乾燥したグラス
ウール層は前記の高密度に保持される。RO-2 Effect The glass wool layer containing an aqueous solution becomes denser between the glass wools due to the surface tension of the aqueous solution, and has a higher density than before it contains water. After inserting the outer tube in this water-containing state, when the glass wool is dried to remove the moisture by evaporation, a force acts within the glass wool layer to restore and expand it to its dry volume. , its expansion is suppressed by the outer tube. Therefore, the dried glass wool layer is maintained at the above-mentioned high density.
ロ−３ 実施例
本発明の実施例を第１図乃至第４図に基づいて
説明する。R-3 Embodiment An embodiment of the present invention will be described based on FIGS. 1 to 4.
５は消音パイプで、その途中に通音孔６が全周
に亘つて形成されている。７はステンレスウール
層で、前記通音孔６を有する有孔部の外周に巻設
されている。８はグラスウール層で、予め布状に
形成し、これにシリカ（SiO2）或いはアルミナ
（Al2O3）等の無機質バインダーを含有する水溶
液を、刷毛塗り或いは液中漬けにて含浸させて
後、その未乾燥状態で前記ステンレスウール層７
の外周に巻設する。この巻設作業は、第４図に示
す如く、台形に裁断された布状のグラスウール８
ａを、その幅広側より消音パイプ５におけるステ
ンレスウール層７の外周に巻き付けて行なう。こ
れにより、そのグラスウール層８の上層部に幅の
狭い側が巻かれて、第１図において８ｂで示すよ
うなテーパ部が形成される。また、この水溶液を
含浸したグラスウール層は、その水溶液の表面張
力によつてグラスウール相互間が密になり、含水
前と比べて密度が大きく嵩が小さくなつている。
次に前記巻設されたグラスウール層８の外周に外
管９を挿嵌する。この外管９の内径と、前記グラ
スウール層８の巻付外径は、これらの間に若干の
隙間を生じて外管９を挿嵌しやすいように設定す
る。この外管９の挿嵌後、自然乾燥或いは強制乾
燥作業によつて、グラスウール層８を、その含有
する水分を蒸発除去して乾燥させる。この乾燥に
より、そのグラスウール層８は、水溶液が含浸さ
れる以前の乾燥状態の嵩まで膨脹復元しようと
し、該グラスウール層８の内外面はステンレスウ
ール層７及び外管９へ圧着し、その圧着状態以上
の膨脹が抑制される。そのため、グラスウール層
８は、消音パイプ５側及び外管９との密着性が良
くかつその密度は、前記含水状態時の密度に近い
高密度に保持される。また、第３図の如く外管９
の内面に接合ビード部ｂを有する場合でも、グラ
スウール層８の膨脹により、そのグラスウールが
接合ビード部ｂの周囲に空隙を有することなく介
在する。尚、前記外管９の嵌着後、その両端９
ａ，９ｂを消音パイプ５へ溶着固定する。 Reference numeral 5 denotes a sound deadening pipe, and a sound hole 6 is formed in the middle thereof over the entire circumference. Reference numeral 7 denotes a stainless wool layer, which is wound around the outer periphery of the perforated portion having the sound holes 6. 8 is a glass wool layer, which is formed in advance into a cloth shape, and is impregnated with an aqueous solution containing an inorganic binder such as silica (SiO 2 ) or alumina (Al 2 O 3 ) by brushing or soaking in liquid. , the stainless wool layer 7 in its undried state
Wrap it around the outer circumference of the This winding operation is carried out using cloth-like glass wool 8 cut into trapezoids, as shown in Fig. 4.
a is wrapped around the outer periphery of the stainless wool layer 7 of the sound deadening pipe 5 from its wide side. As a result, the narrower side is wound around the upper layer of the glass wool layer 8, forming a tapered portion as shown by 8b in FIG. In addition, the glass wool layer impregnated with this aqueous solution becomes denser between the glass wools due to the surface tension of the aqueous solution, and has a higher density and a smaller volume than before water impregnation.
Next, an outer tube 9 is inserted around the outer periphery of the wound glass wool layer 8. The inner diameter of the outer tube 9 and the outer diameter of the winding of the glass wool layer 8 are set so that a slight gap is created between them so that the outer tube 9 can be easily inserted. After the outer tube 9 is inserted, the glass wool layer 8 is dried by evaporating the moisture contained therein by natural drying or forced drying. By this drying, the glass wool layer 8 attempts to expand and restore its bulk to the dry state before being impregnated with the aqueous solution, and the inner and outer surfaces of the glass wool layer 8 are pressed to the stainless wool layer 7 and the outer tube 9, and the pressed state Further expansion is suppressed. Therefore, the glass wool layer 8 has good adhesion to the sound deadening pipe 5 side and the outer tube 9, and its density is maintained at a high density close to the density in the water-containing state. Also, as shown in Fig. 3, the outer tube 9
Even when the bonding bead portion b is present on the inner surface of the bonding bead portion b, due to the expansion of the glass wool layer 8, the glass wool is interposed around the bonding bead portion b without leaving a gap. Note that after the outer tube 9 is fitted, both ends 9 of the outer tube 9 are attached.
a and 9b are welded and fixed to the sound deadening pipe 5.
尚、前記のグラスウール層は、グラスウールに
針差して繊維相互間を絡み合せたニードルマツト
或いはフエルト状のものでもよい。 The glass wool layer may be a needle mat made by inserting needles into glass wool so that the fibers are intertwined with each other, or a felt material.
ハ 発明の効果
以上のように本発明によれば、外管の挿嵌時に
はグラスウール層が水溶液を含浸して嵩が小さく
なつているため、その外管が挿嵌しやすい上に、
含水状態であるからグラスウールの飛散が極めて
少なく、作業環境性も良い。また、その後の乾燥
作業によりグラスウール層内の水分は蒸発除去さ
れるが、そのグラスウール層の密度は、含水状態
時における高密度に近い状態に保持され、消音効
率を向上させることができる。また、グラスウー
ル層が高密度であることから、このグラスウール
が消音パイプの通音孔より飛散することが少な
い。更に、乾燥時には、グラスウール層が膨脹す
るため、そのグラスウール層の内外面が消音パイ
プ側及び外管に密着し、前記従来の如く、グラス
ウール層の内外面に空隙が生じて消音効果を低減
するというようなことがない上に、外管内面に接
合ビード部があつても、その接合ビード部の周囲
にグラスウールを行き渡らせ消音効果の低下を防
止できる。C. Effects of the Invention As described above, according to the present invention, when the outer tube is inserted, the glass wool layer is impregnated with an aqueous solution and the volume is reduced, so that the outer tube can be easily inserted, and
Since it is in a water-containing state, there is very little scattering of glass wool, and the work environment is good. In addition, although the water in the glass wool layer is evaporated and removed by the subsequent drying operation, the density of the glass wool layer is maintained at a state close to the high density when it is in a water-containing state, and the sound deadening efficiency can be improved. In addition, since the glass wool layer has a high density, this glass wool is less likely to scatter from the sound hole of the sound deadening pipe. Furthermore, when drying, the glass wool layer expands, so that the inner and outer surfaces of the glass wool layer come into close contact with the sound-deadening pipe side and the outer pipe, and as in the prior art, voids are created between the inner and outer surfaces of the glass wool layer, reducing the sound-deadening effect. In addition, even if there is a joint bead on the inner surface of the outer tube, the glass wool can be spread around the joint bead to prevent the sound deadening effect from deteriorating.
第１図は本発明の実施例を示す分離状態の側断
面図、第２図は組付状態を示す側断面図、第３図
は第２図におけるＡ−Ａ線拡大断面図、第４図は
グラスウールの巻き付け作業を示す平面図、第５
図は従来方法を示す分離した側断面図である。
５……消音パイプ、６……通音孔、８……グラ
スウール層、９……外管。
Fig. 1 is a side sectional view showing an embodiment of the present invention in a separated state, Fig. 2 is a side sectional view showing an assembled state, Fig. 3 is an enlarged sectional view taken along line A-A in Fig. 2, and Fig. 4. 5 is a plan view showing the glass wool wrapping work.
The figure is an isolated side sectional view showing the conventional method. 5... Sound deadening pipe, 6... Sound hole, 8... Glass wool layer, 9... Outer tube.
Claims (1)
部の外周に、無機質バインダーを含有する水溶液
を含浸させたグラスウール層を巻設して後、該グ
ラスウール層の未乾燥状態において、その外周
に、該層の外径より若干大径の外管を挿嵌し、そ
の後に前記グラスウール層を乾燥させるようにし
たことを特徴とする消音器の製造方法。1. After winding a glass wool layer impregnated with an aqueous solution containing an inorganic binder around the outer periphery of the perforated part of a sound deadening pipe having a perforated part, in the undried state of the glass wool layer, A method for manufacturing a silencer, characterized in that an outer tube having a diameter slightly larger than the outer diameter of the layer is inserted, and then the glass wool layer is dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28381587A JPH01125514A (en) | 1987-11-09 | 1987-11-09 | Manufacture of muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28381587A JPH01125514A (en) | 1987-11-09 | 1987-11-09 | Manufacture of muffler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01125514A JPH01125514A (en) | 1989-05-18 |
| JPH0452848B2 true JPH0452848B2 (en) | 1992-08-25 |
Family
ID=17670509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28381587A Granted JPH01125514A (en) | 1987-11-09 | 1987-11-09 | Manufacture of muffler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01125514A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6543576B1 (en) * | 2000-07-18 | 2003-04-08 | Owens-Corning Fiberglas Technology, Inc. | Multiple layer fiber filled sound absorber and a method of manufacturing the same |
| JP4620338B2 (en) * | 2002-09-27 | 2011-01-26 | 三立化工株式会社 | Exhaust structure of internal combustion engine and manufacturing method thereof |
| KR200371655Y1 (en) * | 2004-10-12 | 2005-01-03 | 이흥우 | A silencer for vehicle |
-
1987
- 1987-11-09 JP JP28381587A patent/JPH01125514A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01125514A (en) | 1989-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4580656A (en) | Absorbent retainer for absorbent type muffler | |
| US5200582A (en) | Passive muffler for low pass frequencies | |
| JPH0452848B2 (en) | ||
| JPH03264716A (en) | Muffler device for four cycle engine | |
| JP2003214134A (en) | Sound absorbing body and muffler for internal combustion engine | |
| JP4574896B2 (en) | Exhaust silencer manufacturing method and exhaust silencer | |
| JPS60175720A (en) | Silencer for internal combustion engines | |
| JP3207578B2 (en) | Method of manufacturing silencer for internal combustion engine | |
| JPH0436013A (en) | Muffler for internal combustion engine and its manufacture | |
| JPS63168205U (en) | ||
| JPH11101121A (en) | Silencer for internal combustion engine | |
| JP2000356119A (en) | Silencing material, muffler using it, and method of forming silencing layer thereof | |
| JPH0413370Y2 (en) | ||
| JPH062525A (en) | Muffler | |
| JPH0475368B2 (en) | ||
| JPS622261Y2 (en) | ||
| JP2005054587A (en) | Exterior products for exhaust gas treatment products | |
| JPH04203308A (en) | Silencer of internal combustion engine | |
| FR2839113A3 (en) | Inner insulation is for exhaust silencer as used in motor cars, lorries, motorcycles and machines and comprises flexible network containing sound-absorbing material | |
| JP7228363B2 (en) | Mat material, winding body and method of inserting mat material | |
| JPH0619785Y2 (en) | Silencer | |
| BE414211A (en) | ||
| JP3096231B2 (en) | Silencer | |
| JP3762865B2 (en) | Silencer and its adjustment method | |
| JPH0437244B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |