JPH064036Y2 - Small 2-cycle internal combustion engine - Google Patents
Small 2-cycle internal combustion engineInfo
- Publication number
- JPH064036Y2 JPH064036Y2 JP12041388U JP12041388U JPH064036Y2 JP H064036 Y2 JPH064036 Y2 JP H064036Y2 JP 12041388 U JP12041388 U JP 12041388U JP 12041388 U JP12041388 U JP 12041388U JP H064036 Y2 JPH064036 Y2 JP H064036Y2
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- combustion engine
- small
- cycle internal
- crankcase
- 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 - Lifetime
Links
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Toys (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は小型２サイクル内燃機関に関し、特に携帯用作
業機械に適する小型２サイクル内燃機関に関する。TECHNICAL FIELD The present invention relates to a small two-cycle internal combustion engine, and more particularly to a small two-cycle internal combustion engine suitable for a portable work machine.
従来の技術 小型２サイクル内燃機関は、シリンダ、ピストン、クラ
ンクケース等のエンジン主要部品の外に、始動器やクラ
ッチ装置や燃料タンク等の付属部品を多く備えており、
このため部品組付構造が複雑化し、組立に手間を要し、
また機体の軽量化が困難であって、特に携帯用作業機械
に適する小型の物の製作が難しい等の不具合があった。2. Description of the Related Art A small two-cycle internal combustion engine is equipped with many accessory parts such as a starter, a clutch device, and a fuel tank, in addition to main engine parts such as a cylinder, a piston, and a crankcase.
For this reason, the parts assembly structure becomes complicated, and it takes time to assemble,
Further, there is a problem that it is difficult to reduce the weight of the machine body, and it is difficult to manufacture a small object suitable for a portable working machine.
考案が解決しようとする課題 そこで、本考案は上記したような従来の技術の不具合を
取除くと共に、部品点数を最小限にして構造簡単で容易
に製作でき、且つ使用に便利な小型２サイクル内燃機関
を提供することを目的とする。DISCLOSURE OF THE INVENTION Therefore, the present invention eliminates the above-mentioned problems of the conventional technology, and minimizes the number of parts, and the structure is simple and easy to manufacture. The purpose is to provide an institution.
課題を解決するための手段 即ち、本考案による小型２サイクル内燃機関は、上下二
分割したクランクケースの下半部を含む下部部材に、燃
料タンク、リコイル式始動器、カバー及びクラッチ装置
を組付けたことを特徴とする。[MEANS FOR SOLVING THE PROBLEMS] That is, the small two-cycle internal combustion engine according to the present invention has a fuel tank, a recoil starter, a cover and a clutch device attached to a lower member including a lower half of a crankcase which is divided into upper and lower parts. It is characterized by that.
作用 従って、燃料タンク、リコイル式始動器、カバー及びク
ラッチ装置は全て下部部材にハーフマウント形式で簡単
に組付けられる。Therefore, the fuel tank, the recoil type starter, the cover, and the clutch device are all easily mounted on the lower member in a half-mount form.
実施例 次に、本考案を図面の実施例に基づいて説明する。Embodiment Next, the present invention will be described based on an embodiment of the drawings.
図示実施例は、本考案を刈払機の操作桿取付部材１の後
部に取着される小型２サイクル内燃機関２に適用した例
であり、この内燃機関２は、上部部材３と下部部材４と
を含む。前記上部部材３は、上下二分割にされたクラン
クケース５の上半部６とシリンダ７とが一体に形成され
た部品で構成され、下部部材４は、前記クランクケース
５の下半部８を含み、前記クランクケース５の上半部６
及び下半部８は通常行われているようにそれらの結合部
を複数個のボルト（図示せず）で強固に結合されてい
る。The illustrated embodiment is an example in which the present invention is applied to a small two-cycle internal combustion engine 2 attached to a rear portion of an operating rod attachment member 1 of a brush cutter. The internal combustion engine 2 includes an upper member 3 and a lower member 4. including. The upper member 3 is composed of a component in which an upper half portion 6 of a crankcase 5 and a cylinder 7 which are vertically divided into two parts are integrally formed, and a lower member 4 includes a lower half portion 8 of the crankcase 5. Including the upper half 6 of the crankcase 5
The lower half 8 is firmly connected to its connecting portion by a plurality of bolts (not shown) as is usually done.
前記下部部材４は、合成樹脂で成形されていて、前記ク
ランクケース５の下半部８をインサートして一体に支持
しており、更にクランク軸９の軸線方向に沿って前記シ
リンダ７及びクランクケース５の前後へ延在している。
前記下部部材４の下側に燃料タンク１０が配置されてお
り、該燃料タンク１０は、第２図に示すように複数個の
ねじ１１，１２によって前記下部部材４に取付けられて
いる。また、前記クランク軸９の後端部側に配置された
リコイル式始動器１３は、そのケース１４を複数個のね
じ１５，１６，１７によって前記下部部材４に固定され
ており、前記左右のねじ１５，１６は、機体の上半部を
覆うカバー１８の後側部分１９をも一緒に固定してい
る。The lower member 4 is made of synthetic resin and integrally supports the lower half portion 8 of the crankcase 5 by inserting it. Further, the lower member 4 is supported along the axial direction of the crankshaft 9 by the cylinder 7 and the crankcase. It extends to around 5.
A fuel tank 10 is arranged below the lower member 4, and the fuel tank 10 is attached to the lower member 4 by a plurality of screws 11 and 12 as shown in FIG. The case 14 of the recoil-type starter 13 arranged on the rear end side of the crankshaft 9 is fixed to the lower member 4 by a plurality of screws 15, 16 and 17, and the left and right screws are 15 and 16 also fix the rear side portion 19 of the cover 18 that covers the upper half of the machine body.
一方、前記クランク軸９の前端部側に配置されたクラッ
チ装置２０の出力側を支持する前記操作桿取付部材１
は、第３図に示すように複数個のねじ２１，２２，２３
によって前記下部部材４に固定されており、前記左右の
ねじ２１，２２は、前記カバー１８の前側部分２４をも
一緒に固定している。On the other hand, the operating rod mounting member 1 that supports the output side of the clutch device 20 arranged on the front end side of the crankshaft 9.
Is a plurality of screws 21, 22, 23 as shown in FIG.
Is fixed to the lower member 4 by means of the left and right screws 21, 22 and also fixes the front portion 24 of the cover 18 together.
このようにして、燃料タンク１０、リコイル式始動器１
３、カバー１８及びクラッチ装置２０は全て下部部材４
に組付けられて固定されている。In this way, the fuel tank 10 and the recoil type starter 1
3, the cover 18 and the clutch device 20 are all lower members 4
It is assembled and fixed to.
次に、第４図に示す別の実施例は、下部部材２５が、ク
ランクケース２６の下半部２７を一体的に形成した構造
を有し、このように形成された下部部材２５に前記した
実施例と同様に燃料タンク２８がねじ止めされ、リコイ
ル式始動器２９及びカバー３０の後側部分３１が下部部
材２５にねじ３２により取着され、クラッチ装置３３の
出力側を支持する取付部材３６及びカバー３０の前側部
分３４もねじ３５により取着されている。Next, in another embodiment shown in FIG. 4, the lower member 25 has a structure in which the lower half portion 27 of the crankcase 26 is integrally formed, and the lower member 25 thus formed is described above. Similar to the embodiment, the fuel tank 28 is screwed, the recoil starter 29 and the rear portion 31 of the cover 30 are attached to the lower member 25 by the screws 32, and the mounting member 36 that supports the output side of the clutch device 33. Also, the front side portion 34 of the cover 30 is attached by screws 35.
考案の効果 以上説明した本考案の構成により、本考案は、部品取付
構成の簡素化及び組付けねじを極少化、高精度加工部の
極少化及びアルミニウム部材の極少化等を実現し、構造
が軽量にもかかわらず高い剛性を維持し、且つ製作のコ
スト低減を計ることができる等の効果を奏する。Effect of the Invention With the configuration of the present invention described above, the present invention realizes a simplified structure for mounting parts, minimizes assembly screws, minimizes high-precision machined parts, minimizes aluminum members, etc. Even though it is light in weight, high rigidity can be maintained, and manufacturing cost can be reduced.
第１図は本考案に係る一実施例を示す小型２サイクル内
燃機関の要部縦断面図、第２図は第１図の後面図、第３
図は第１図の前面図、そして第４図は本考案の別の実施
例の要部縦断面図である。 ４，２５……下部部材、５，２６……クランクケース、
８，２７……クランクケースの下半部、１０，２８……
燃料タンク、１３，２９……リコイル式始動器、１８，
３０……カバー、２０，３３……クラッチ装置。FIG. 1 is a longitudinal sectional view of a main part of a small two-cycle internal combustion engine showing an embodiment according to the present invention, FIG. 2 is a rear view of FIG. 1, and FIG.
1 is a front view of FIG. 1, and FIG. 4 is a longitudinal sectional view of an essential part of another embodiment of the present invention. 4, 25 ... Lower member, 5, 26 ... Crankcase,
8,27 …… Lower half of crankcase 10,28 ……
Fuel tank, 13, 29 ... Recoil starter, 18,
30 ... Cover, 20, 33 ... Clutch device.
Claims (1)
６）の下半部（８，２７）を含む下部部材（４，２５）
に、燃料タンク（１０，２８）、リコイル式始動器（１
３，２９）、カバー（１８，３０）及びクラッチ装置
（２０，３３）を組付けたことを特徴とする小型２サイ
クル内燃機関。1. A crankcase (5, 2) divided into upper and lower parts.
6) Lower member (4, 25) including the lower half (8, 27)
The fuel tank (10, 28), recoil type starter (1
3, 29), a cover (18, 30) and a clutch device (20, 33) are assembled, and a small two-cycle internal combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12041388U JPH064036Y2 (en) | 1988-09-16 | 1988-09-16 | Small 2-cycle internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12041388U JPH064036Y2 (en) | 1988-09-16 | 1988-09-16 | Small 2-cycle internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0243435U JPH0243435U (en) | 1990-03-26 |
| JPH064036Y2 true JPH064036Y2 (en) | 1994-02-02 |
Family
ID=31366499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12041388U Expired - Lifetime JPH064036Y2 (en) | 1988-09-16 | 1988-09-16 | Small 2-cycle internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH064036Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2523499Y2 (en) * | 1992-07-24 | 1997-01-22 | 川崎重工業株式会社 | Recoil starter mounting structure |
-
1988
- 1988-09-16 JP JP12041388U patent/JPH064036Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0243435U (en) | 1990-03-26 |
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