JPH034741Y2 - - Google Patents
Info
- Publication number
- JPH034741Y2 JPH034741Y2 JP1984171708U JP17170884U JPH034741Y2 JP H034741 Y2 JPH034741 Y2 JP H034741Y2 JP 1984171708 U JP1984171708 U JP 1984171708U JP 17170884 U JP17170884 U JP 17170884U JP H034741 Y2 JPH034741 Y2 JP H034741Y2
- Authority
- JP
- Japan
- Prior art keywords
- muffler
- cylinder
- die
- muffler body
- cast
- 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
- 239000000463 material Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000003584 silencer Effects 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
小型汎用エンジンに於ける分割可能なダイカス
ト材よりなる消音器締付構造に関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a muffler fastening structure made of a divisible die-cast material for small general-purpose engines.
第４図は従来例でシリンダにダイカスト製マフ
ラを締め付けた状態図、第５図は第４図のＡ−Ａ
断面図である。
Figure 4 is a conventional example with a die-cast muffler tightened to the cylinder, and Figure 5 is A-A in Figure 4.
FIG.
第４〜５図でダイカスト製マフラ本体１をシリ
ンダ４にガスケツト５を介してボルト３で締め付
けている。しかしボルト３の周辺部は高温となつ
ており、マフラ本体１とボルト３の材料が異なる
ため高温時の材料の熱膨張率の差により長時間運
転すると、ボルト３のトルク低下が発生する。こ
れはボルト３でマフラ本体１をシリンダ４にガス
ケツト５を介して締め付ける際、ボルトによる締
付力が座金８の接触面積のみに作用した状態で高
温下にさらされ、マフラ本体１と座金８の接触面
積が少ないため材料に降伏が起りボルト３の締付
けトルクがダウンし、これによつてシリンダ４と
マフラ本体１の間から排気ガスが漏れタールによ
る汚れが目立ち、終にはマフラの脱落に至る。な
お２はマフラ蓋、７は蓋２と本体１のシール用パ
ツキン、６は取付座でシリンダ４の形状に対応し
てマフラ本体１に形成されている。 4 and 5, a die-cast muffler body 1 is fastened to a cylinder 4 with bolts 3 through a gasket 5. However, the surrounding area of the bolt 3 is at a high temperature, and since the muffler body 1 and the bolt 3 are made of different materials, the torque of the bolt 3 decreases when operated for a long time due to the difference in thermal expansion coefficient of the materials at high temperatures. This is because when tightening the muffler body 1 to the cylinder 4 with the bolt 3 via the gasket 5, the tightening force of the bolt acts only on the contact area of the washer 8 and is exposed to high temperature, causing the muffler body 1 and the washer 8 to Due to the small contact area, the material yields and the tightening torque of the bolt 3 is reduced, which causes exhaust gas to leak from between the cylinder 4 and the muffler body 1, making tar stains noticeable and eventually leading to the muffler falling off. . Note that 2 is a muffler lid, 7 is a gasket for sealing between the lid 2 and the main body 1, and 6 is a mounting seat formed on the muffler main body 1 in accordance with the shape of the cylinder 4.
ダイカスト製マフラ本体をシリンダにガスケツ
トを介してボルト締めしているが、ボルト周辺部
が高温となり長時間運転するとボルトの締付トル
クの低下が発生する欠点があつた。
The die-cast muffler body is bolted to the cylinder via a gasket, but the area around the bolts becomes hot and the tightening torque of the bolts decreases during long-term operation.
本考案の目的は、前記従来例の欠点を解消し、
シリンダにガスケツトを介してボルト締めされた
マフラ本体の締付トルクが長時間運転によつても
低下することのない消音器締付構造を提供するに
ある。 The purpose of the present invention is to eliminate the drawbacks of the conventional example,
To provide a muffler tightening structure in which the tightening torque of a muffler body bolted to a cylinder via a gasket does not decrease even after long-term operation.
本考案の消音器締付構造は、アルミ等のダイカ
スト材よりなるダイカスト製マフラ本体をシリン
ダにガスケツトを介してボルトにより締付固定も
のにおいて、前記マフラ本体の内部に設けられた
取付座部に鋼板等の金属板の一面を当てるととも
に、該金属板の他面側からボルトを挿入して前記
金属板とともにマフラ本体をシリンダに締め付け
固定してなることを特徴としている。
The muffler tightening structure of the present invention is one in which a die-cast muffler body made of a die-cast material such as aluminum is fastened to a cylinder with bolts through a gasket, and a steel plate is attached to a mounting seat provided inside the muffler body. The muffler body is fastened to the cylinder together with the metal plate by inserting bolts into the cylinder from the other side of the metal plate.
以下第１〜３図を参照して本考案の一実施例に
ついて説明する。
An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
第１図はシリンダにダイカスト製マフラを締め
付けた状態図、第２図は第１図のＢ−Ｂ断面図、
第３図はSPCC製のプレート１１の平面図であ
る。なお１はダイカスト製マフラ本体、２はマフ
ラ蓋、３はボルト、４はシリンダ、５はガスケツ
ト、６は取付座、７はパツキン、８は座金、１１
はSPCC製プレートである。 Figure 1 is a diagram of the die-cast muffler tightened to the cylinder, Figure 2 is a sectional view taken along line B-B in Figure 1,
FIG. 3 is a plan view of the plate 11 made of SPCC. Note that 1 is a die-cast muffler body, 2 is a muffler lid, 3 is a bolt, 4 is a cylinder, 5 is a gasket, 6 is a mounting seat, 7 is a packing, 8 is a washer, 11
is a SPCC plate.
ダイカスト製マフラ本体をシリンダ４にガスケ
ツト５を介して締め付けるに際し、第４図及び第
５図に示すように、マフラ本体１の内部に設けら
れた取付座６とほぼ同じ面積を有する前記プレー
ト１１の一面を該取付座６に当て、該プレート１
１の他面側（マフラ本体１の内面側）からボルト
３を挿通して、前記プレート１１とともにマフラ
本体をシリンダ４に締め付け固定する。 When tightening the die-cast muffler body to the cylinder 4 via the gasket 5, as shown in FIGS. 4 and 5, the plate 11 having approximately the same area as the mounting seat 6 provided inside the muffler body 1 is Place one side on the mounting seat 6, and
1 from the other side (inner surface side of the muffler body 1), and tighten and fix the muffler body together with the plate 11 to the cylinder 4.
次に前記実施例の作用について説明する。 Next, the operation of the above embodiment will be explained.
ボルト３による締付力が第３図に示すとおり従
来の座金による接触面積S1であるのに対し、プレ
ート１１を挿入した場合はS1＋S2と接触面積が広
くなり、プレート１１を当てて締め付けることに
よりボルトによる締付力を分散させることができ
る。 As shown in Fig. 3, the tightening force by the bolt 3 is the contact area S 1 with the conventional washer, but when the plate 11 is inserted, the contact area becomes S 1 + S 2 , and the plate 11 is applied. By tightening, the tightening force caused by the bolt can be dispersed.
前述のとおり本考案の消音器締付構造に従来に
比べ広い面積にボルト締付力を分散させることに
より高温下にさらされても、広い面積で接触して
いるため本体１が材料が降伏して叩かれにくくな
りトルクダウンを防止できる。
As mentioned above, the muffler tightening structure of the present invention distributes the bolt tightening force over a wider area than conventional ones, so that even when exposed to high temperatures, the main body 1 is in contact with the material over a wide area, so that the material does not yield. This makes it less likely to be hit by the brakes and prevents torque down.
第１図はシリンダにダイカスト製マフラを締め
付けた状態図、第２図は第１図のＢ−Ｂ断面図、
第３図はプレート１１の平面図、第４図は従来例
でシリンダにダイカスト製マフラを締め付けた状
態図、第５図は第４図のＡ−Ａ断面図である。
１……マフラ本体、３……ボルト、４……シリ
ンダ、５……ガスケツト、１１……金属板。
Figure 1 is a diagram of the die-cast muffler tightened to the cylinder, Figure 2 is a sectional view taken along line B-B in Figure 1,
FIG. 3 is a plan view of the plate 11, FIG. 4 is a conventional example in which a die-cast muffler is tightened to a cylinder, and FIG. 5 is a sectional view taken along the line AA in FIG. 4. 1...Muffler body, 3...Bolt, 4...Cylinder, 5...Gasket, 11...Metal plate.
Claims (1)
マフラ本体をシリンダにガスケツトを介してボル
トにより締付固定する消音器締付構造において、
前記マフラ本体の内部に設けられた取付座部に鋼
板等の金属板の一面を当てるとともに、該金属板
の他面側からボルトを挿入して前記金属板ととも
にマフラ本体をシリンダに締め付け固定してなる
消音器締付構造。 In the muffler tightening structure, a die-cast muffler body made of die-cast material such as aluminum is fixed to the cylinder by tightening bolts through a gasket.
One side of a metal plate such as a steel plate is applied to a mounting seat provided inside the muffler body, and a bolt is inserted from the other side of the metal plate to tighten and fix the muffler body together with the metal plate to the cylinder. Silencer tightening structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984171708U JPH034741Y2 (en) | 1984-11-14 | 1984-11-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984171708U JPH034741Y2 (en) | 1984-11-14 | 1984-11-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6186518U JPS6186518U (en) | 1986-06-06 |
| JPH034741Y2 true JPH034741Y2 (en) | 1991-02-07 |
Family
ID=30729387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984171708U Expired JPH034741Y2 (en) | 1984-11-14 | 1984-11-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH034741Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5967527A (en) * | 1982-10-08 | 1984-04-17 | Fuji Photo Film Co Ltd | Control device for exposure for photographic printing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57196214U (en) * | 1981-06-08 | 1982-12-13 | ||
| JPS5956320U (en) * | 1982-10-07 | 1984-04-12 | 川崎重工業株式会社 | Installation structure of exhaust muffler for internal combustion engine |
| JPS5958721U (en) * | 1982-10-13 | 1984-04-17 | 小松ゼノア株式会社 | muffler |
-
1984
- 1984-11-14 JP JP1984171708U patent/JPH034741Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5967527A (en) * | 1982-10-08 | 1984-04-17 | Fuji Photo Film Co Ltd | Control device for exposure for photographic printing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6186518U (en) | 1986-06-06 |
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