JPS6212822Y2 - - Google Patents
Info
- Publication number
- JPS6212822Y2 JPS6212822Y2 JP645882U JP645882U JPS6212822Y2 JP S6212822 Y2 JPS6212822 Y2 JP S6212822Y2 JP 645882 U JP645882 U JP 645882U JP 645882 U JP645882 U JP 645882U JP S6212822 Y2 JPS6212822 Y2 JP S6212822Y2
- Authority
- JP
- Japan
- Prior art keywords
- cover
- outer plate
- chamber
- breather device
- gasket
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 4
- 238000005238 degreasing Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は内燃機関のブリーザ装置の改善に関す
る。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an improvement of a breather device for an internal combustion engine.
第１図は従来のこの種ブリーザ装置を設けた４
サイクル側弁式小型エンジンの要部を示す断面
図、第２図は第１図の矢視図、第３図は第２図
の−矢視断面図である。図において、ａがシ
リンダヘツド、ｂがガスケツト、ｃがシリンダ、
ｄがクランクケース、ｅがクランク室、ｆがピス
トン、ｇが連接棒、ｈが吸気弁、ｉが吸気通路、
ｊが気化器、ｋがタペツト室、ｌがタペツト、ｍ
が吸気カム、ｎがブリーザ装置で、同ブリーザ装
置ｎが外板n1と同外板n1に穿設した小孔n2と同小
孔n2に対向するように上記外板n1の内面にリベツ
ト等により装着した弾性材製チエツクバルブn3及
び支え板n4と上記外板n1内の空気室n5と上記外板
n1に穿設した小孔n6と、上記外板n1と空気室n5を
形成しタペツト室ｋの開口部を被覆するカバーn7
とにより構成されている。またｏが上記空気室n5
に開口したパイプ、ｐが同パイプｏとエアクリー
ナ（図示せず）とを接続するホース、ｑが前記ク
ランク室ｅと前記タペツト室ｋとを連通する連通
孔、ｒがパツキン、ｓが固定ボルトで、油を含ん
だブローバイガスがクランク室ｅの圧力変動によ
りクランク室ｅから連通孔ｑ→タペツト室ｋを経
てエアクリーナへ排出されるのを防止するため
に、油とガスがブリーザ装置ｎにより分離された
のち、ガスがエアクリーナへ送られる一方、油が
タペツト室ｋへ戻されるように、即ち、クランク
室ｅの内圧が正圧のときに、油を含んだガスがク
ランク室ｅから連通孔ｑ→タペツト室ｋ→外板n1
の小孔n2、チエツクバルブn3を経て空気室n5へ入
り、この間チエツクバルブn3に衝突して、油とガ
スに分離され、油を分離したガスがパイプｏ→ホ
ースｐを経てエアクリーナへ送られる一方、ガス
から分離された油が外板n1の小孔n6からタペツト
室ｋへクランク室ｅの内圧が負圧のときに戻され
るようになつている。
Figure 1 shows a 4-stage system equipped with a conventional breather device of this type.
FIG. 2 is a cross-sectional view showing essential parts of a cycle side valve type small engine, FIG. 2 is a cross-sectional view taken in the direction of the arrow in FIG. 1, and FIG. 3 is a cross-sectional view taken in the direction shown in FIG. In the figure, a is the cylinder head, b is the gasket, c is the cylinder,
d is the crankcase, e is the crank chamber, f is the piston, g is the connecting rod, h is the intake valve, i is the intake passage,
j is the vaporizer, k is the tapepet chamber, l is the tapepet, m
is an intake cam, n is a breather device, and the breather device n is installed in the outer panel n1 so as to face the outer panel n1 and the small hole n2 bored in the outer panel n1 . Elastic material check valve n 3 and support plate n 4 attached to the inner surface with rivets etc., air chamber n 5 in the above outer plate n 1 and the above outer plate
A small hole n6 bored in n1 and a cover n7 forming an air chamber n5 with the outer plate n1 and covering the opening of the tapepet chamber k.
It is composed of. Also, o is the air chamber n 5
p is a hose that connects the pipe o and an air cleaner (not shown), q is a communication hole that communicates the crank chamber e and the tappet chamber k, r is a gasket, and s is a fixing bolt. In order to prevent blow-by gas containing oil from being discharged from the crank chamber e to the air cleaner via the communication hole q → tappet chamber k due to pressure fluctuations in the crank chamber e, oil and gas are separated by a breather device n. Afterwards, while the gas is sent to the air cleaner, the oil is returned to the tappet chamber k, that is, when the internal pressure of the crank chamber e is positive, the gas containing oil is passed from the crank chamber e to the communication hole q→ Tappet chamber k → outer plate n 1
It enters the air chamber n5 through the small hole n2 and the check valve n3 , during which it collides with the check valve n3 and is separated into oil and gas. On the other hand, the oil separated from the gas is returned from the small hole n6 of the outer plate n1 to the tappet chamber k when the internal pressure of the crank chamber e is negative.
ところが従来のブリーザ装置は外板n1がカバー
n7にスポツト溶接等により固定しているため、溶
接、脱脂、外観向上及び防錆のための溶接後のメ
ツキ処理等が必要となり、加工工数が多くなると
共に溶接のための位置決め用治具を必要とするた
め、コスト高となる問題があつた。また、ブリー
ザ装置をパツキンを介してボルトｓによりクラン
クケースｃに締付固定しているが、この間のシー
ルを確実にするためには、締付時カバーn7が変形
しないようにカバーn7の板厚を厚くしてカバーn7
の剛性を高くしておく必要があつた。
However, the conventional breather device is covered by the outer plate n1 .
Since it is fixed by spot welding etc. to n 7 , welding, degreasing, plating after welding to improve appearance and rust prevention are required, which increases the number of processing steps and requires a positioning jig for welding. Since it is necessary, there was a problem of high cost. In addition, the breather device is tightened and fixed to the crankcase c with bolts s through the gasket, but in order to ensure a secure seal during this time, it is necessary to tighten the cover n 7 so that the cover n 7 does not deform when tightening. Cover with thicker board n 7
It was necessary to increase the rigidity of the
本考案は上記問題点を解決することができるブ
リーザ装置を提供しようとするものである。 The present invention aims to provide a breather device that can solve the above problems.
本考案は上記問題点を解決するため、クランク
室と連通したタペツト室の開口部に配置され同開
口部を被覆しエアクリーナへの通路を設けたカバ
ーと同カバーより内方へ突出して空気室を形成す
ると共に板面に小孔を設けた外板と上記小孔に対
向して配設され上記タペツト室から空気室への流
れを許すチエツクバルブを上記外板との間に装着
する支え板とを有する内燃機関のブリーザ装置に
おいて、上記外板と上記カバーとの間にパツキン
を挾持すると共に同カバーの端部を同外板の端部
にかしめ付けて同カバー、パツキン及び外板を一
体に形成し、同カバー、パツキン及び外板を貫通
するボルトを介してクランクケースに締付固定し
て内燃機関のブリーザ装置を構成したものであ
る。
In order to solve the above-mentioned problems, the present invention has a cover that is placed at the opening of the tappet chamber that communicates with the crank chamber, covers the opening, and provides a passage to the air cleaner, and an air chamber that protrudes inward from the cover. an outer plate having small holes formed in the plate surface; and a support plate having a check valve installed between the outer plate and the outer plate, which is disposed opposite to the small hole and allows flow from the tapepet chamber to the air chamber. In the breather device for an internal combustion engine, a gasket is sandwiched between the outer plate and the cover, and an end of the cover is caulked to an end of the outer plate to integrate the cover, the gasket, and the outer plate. A breather device for an internal combustion engine is constructed by forming a breather device for an internal combustion engine and tightening and fixing it to the crankcase via bolts passing through the cover, packing, and outer plate.
上記のように構成することによりカバーと外板
との溶接を不要にすることができるため、溶接後
の脱脂や外観向き及び防錆のためのメツキ処理を
不要となり、加工工数の低減をはかることができ
ると共にカバー、パツキン、外板をかしめ付けに
より一体化して締付固定できるようにしているた
め、カバー自体を薄くして剛性を落しても全体と
して締付け時の変形を防止するに十分な剛性を確
保することができる。
By configuring as above, it is possible to eliminate the need for welding the cover and the outer plate, so degreasing after welding and plating for appearance and rust prevention are no longer necessary, reducing the number of processing steps. In addition, the cover, gasket, and outer panel can be integrated and fixed by caulking, so even if the cover itself is made thinner and its rigidity is reduced, the overall rigidity is sufficient to prevent deformation during tightening. can be ensured.
〔実施例〕
以下図面を参照して本考案による実施例につき
説明する。[Embodiments] Examples of the present invention will be described below with reference to the drawings.
第４図は本考案による１実施例のブリーザ装置
をタペツト室側から見た正面図、第５図は第４図
の−矢視断面図である。 FIG. 4 is a front view of one embodiment of the breather device according to the present invention, viewed from the tappet chamber side, and FIG. 5 is a sectional view taken along the - arrow in FIG. 4.
従来例を示す第１図、第２図、第３図のものと
の差異について説明する。 Differences from the conventional examples shown in FIGS. 1, 2, and 3 will be explained.
１はブリーザ装置で、外板２（従来例ではn1で
示されている）とカバー３（従来例ではn7で示さ
れている）の間にパツキン４を挾持するととも
に、同カバー３を同外板２でかしめ付けて一体と
なつている。 Reference numeral 1 denotes a breather device, which holds a gasket 4 between an outer panel 2 (indicated by n 1 in the conventional example) and a cover 3 (indicated by n 7 in the conventional example), and also holds the cover 3. The same outer plate 2 is caulked and integrated.
外板２は、フランジ部２ａを複数個所（本実施
例では６個所）延長して折り曲げ部２ｂを設けて
カバー３の端部をかしめ付けるように形成されて
いる。 The outer plate 2 is formed so that the flange portion 2a is extended at a plurality of locations (six locations in this embodiment) to provide a bent portion 2b, and the end portion of the cover 3 is caulked.
パツキン４は外板２とカバー３の間に挾持さ
れ、外板２とカバー３の間のシール機能を果す。 The gasket 4 is held between the outer panel 2 and the cover 3 and functions as a seal between the outer panel 2 and the cover 3.
上記構成の場合の作用について述べる。 The operation in the case of the above configuration will be described.
ブリーザ装置１を組立てる場合、外板２とカバ
ー３の間にパツキン４を挾持後、折り曲げ部２ｂ
を折り曲げてかしめ付け、カバー３、パツキン
４、外板２を一体とし、ボルトｓを介してクラン
クケースに締付固定する。 When assembling the breather device 1, after sandwiching the gasket 4 between the outer panel 2 and the cover 3,
The cover 3, packing 4, and outer plate 2 are assembled into one body by bending and caulking, and then tightening and fixing the cover 3, packing 4, and outer plate 2 to the crankcase via bolts s.
以上説明したように本考案によると、ブリーザ
装置の外板とカバーをパツキンを挾持してかしめ
付けしているため、溶接を廃止することができ
る。従つて溶接後に必要としていた脱脂、外観向
上及び防錆のためのメツキ処理等を不要にでき、
メツキ処理済の板材を使用することができるた
め、加工工数の低減をはかることができると共に
外板とカバーをパツキンを挾んでかしめ付けし、
一体化しているためカバーの板厚を薄くしても全
体として締付固定時の変形を防止するのに充分な
剛性を確保することができるので、大幅なコスト
ダウンをはかることができる。
As explained above, according to the present invention, the outer plate of the breather device and the cover are caulked together by sandwiching the gasket, so welding can be eliminated. Therefore, degreasing, plating for appearance improvement and rust prevention, etc., which were required after welding, can be eliminated.
Since plated plate materials can be used, the number of machining steps can be reduced, and the outer panel and cover can be caulked by sandwiching the gasket.
Since it is integrated, even if the thickness of the cover is reduced, sufficient rigidity can be ensured to prevent deformation when tightening and fixing the cover as a whole, resulting in a significant cost reduction.
第１図は従来のブリーザ装置を設けた４サイク
ル側弁式小型エンジンの要部を示す断面図、第２
図は第１図の矢視図、第３図は第２図の−
矢視断面図、第４図は本考案によるブリーザ装置
を示す正面図、第５図は第４図の−矢視断面
図である。
１……ブリーザ装置、２……外板、３……カバ
ー、４……パツキン、ｄ……クランクケース、ｅ
……クランク室、ｋ……タペツト室、n1……外
板、n2……小孔、n3……チエツクバルブ、n4……
支え板、n5……空気室、ｏ……パイプ、ｐ……ホ
ース、ｑ……連通孔、ｓ……ボルト。
Figure 1 is a cross-sectional view showing the main parts of a 4-stroke side valve type small engine equipped with a conventional breather device;
The figure is a view in the direction of the arrow in Fig. 1, and Fig. 3 is a - of Fig. 2.
4 is a front view showing the breather device according to the present invention, and FIG. 5 is a sectional view taken along the - arrow in FIG. 4. 1...Breather device, 2...Outer plate, 3...Cover, 4...Putskin, d...Crankcase, e
... Crank chamber, k ... Tappet chamber, n 1 ... Outer plate, n 2 ... Small hole, n 3 ... Check valve, n 4 ...
Support plate, n 5 ...Air chamber, o...Pipe, p...Hose, q...Communication hole, s...Bolt.
Claims (1)
置され同開口部を被覆しエアクリーナへの通路を
設けたカバーと同カバーより内方へ突出して空気
室を形成すると共に板面に小孔を設けた外板と上
記小孔に対向して配設され上記タペツト室から空
気室への流れを許すチエツクバルブを上記外板と
の間に装着する支え板とを有する内燃機関のブリ
ーザ装置において、上記外板と上記カバーとの間
にパツキンを挾持すると共に同カバーの端部を同
外板の端部にかしめ付けて同カバー、パツキン及
び外板を一体に形成し同カバー、パツキン及び外
板を貫通するボルトを介してクランクケースに締
付固定してなることを特徴とする内燃機関のブリ
ーザ装置。 A cover is placed at the opening of the tappet chamber that communicates with the crank chamber, covers the opening, and provides a passage to the air cleaner, and a cover that protrudes inward from the cover to form an air chamber and has small holes in the plate surface. In the breather device for an internal combustion engine, the breather device for an internal combustion engine has a support plate having a check valve installed between the outer plate and the outer plate, which is disposed opposite to the small hole and allows air to flow from the tappet chamber to the air chamber. A gasket is held between the plate and the cover, and the end of the cover is caulked to the end of the outer plate to form the cover, the gasket, and the outer plate as one body, and the cover, the gasket, and the outer plate are penetrated. A breather device for an internal combustion engine, characterized in that it is tightened and fixed to a crankcase via a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP645882U JPS58109509U (en) | 1982-01-22 | 1982-01-22 | Internal combustion engine breather device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP645882U JPS58109509U (en) | 1982-01-22 | 1982-01-22 | Internal combustion engine breather device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58109509U JPS58109509U (en) | 1983-07-26 |
| JPS6212822Y2 true JPS6212822Y2 (en) | 1987-04-03 |
Family
ID=30019237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP645882U Granted JPS58109509U (en) | 1982-01-22 | 1982-01-22 | Internal combustion engine breather device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58109509U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5478399B2 (en) * | 2009-09-30 | 2014-04-23 | 株式会社クボタ | Engine blow-by gas recirculation system |
-
1982
- 1982-01-22 JP JP645882U patent/JPS58109509U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58109509U (en) | 1983-07-26 |
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