JPH057970U - 2 cycle engine cylinder - Google Patents
2 cycle engine cylinderInfo
- Publication number
- JPH057970U JPH057970U JP6098991U JP6098991U JPH057970U JP H057970 U JPH057970 U JP H057970U JP 6098991 U JP6098991 U JP 6098991U JP 6098991 U JP6098991 U JP 6098991U JP H057970 U JPH057970 U JP H057970U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- plug
- spark plug
- wrench
- cycle engine
- 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.)
- Granted
Links
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
(57)【要約】
【目的】 プラグレンチ５５で点火プラグ５４をエンジ
ンシリンダに脱着する際シリンダフィン５２を傷めるこ
となく、又点火プラグの確実な締付を可能とする。
【構成】 空冷小型エンジンのシリンダに点火プラグを
傾斜して取付けたものにおいて、点火プラグ締付ねじボ
ス５１ａの周囲の任意の位置でプラグレンチの挿入方向
端面にストッパ５３をシリンダ５１と一体的に突設した
ことを特徴としている。
(57) [Abstract] [Purpose] When the spark plug 54 is attached to and detached from the engine cylinder with the plug wrench 55, the cylinder fin 52 is not damaged and the spark plug can be securely tightened. In a cylinder of an air-cooled small engine in which a spark plug is inclined and attached, a stopper 53 is integrally formed with the cylinder 51 at an end face in a plug wrench insertion direction at an arbitrary position around a spark plug fastening screw boss 51a. It is characterized by protruding.
Description
【０００１】[0001]
本考案は小型機器に使用される小形空冷２サイクル内燃機関に関する。 The present invention relates to a small air-cooled two-cycle internal combustion engine used for small equipment.
【０００２】[0002]
小型空冷２サイクル機関のシリンダ３にはシリンダ壁３ｂの外側に多数の放熱 フィン３ａを形成しており、前記シリンダの頂部には燃焼室を備え、ピストンリ ング５を嵌装したピストン４がシリンダ３内に挿入され、前記ピストン４は図示 しないコネクチングロッドを介して図示しないクランクケース内の図示しないク ランク軸に連結されている。 ファンカバー８の排気口８ｂはシリンダ３方向に指向され、シリンダ３を覆う シリンダカバー９の開口と接合されている。 In the cylinder 3 of a small air-cooled two-cycle engine, a large number of heat radiation fins 3a are formed outside the cylinder wall 3b, a combustion chamber is provided at the top of the cylinder, and a piston 4 fitted with a piston ring 5 is provided in the cylinder 3. The piston 4 is inserted into a crankshaft (not shown) in a crankcase (not shown) via a connecting rod (not shown). The exhaust port 8b of the fan cover 8 is directed toward the cylinder 3 and is joined to the opening of the cylinder cover 9 that covers the cylinder 3.
【０００３】 前記ファンカバー８の頂部には上方に延出した点火栓ガード８ｃが形成され、 後述の点火栓１４は外部の物体が衝突しないよう保護されている。さらに前記点 火栓ガード８ｃには点火栓１４の脱着時、工具２０を差し込む窓８ｄが設けられ ている。又シリンダカバー９の点火栓１４と反対側には排風口９ａが開口すると 共に、点火栓１４の周りには膨出部９ｂを頂部に形成して、ファンカバー８の切 欠部８ｇと共に点火栓挿入口９ｃを形成している。A spark plug guard 8c extending upward is formed on the top of the fan cover 8, and a spark plug 14 described later is protected so as not to collide with an external object. Further, the spark plug guard 8c is provided with a window 8d into which the tool 20 is inserted when the spark plug 14 is attached or detached. An exhaust port 9a is opened on the opposite side of the cylinder cover 9 from the spark plug 14, and a bulging portion 9b is formed around the spark plug 14 at the top, and together with the cutout portion 8g of the fan cover 8, the spark plug 9a is formed. The insertion port 9c is formed.
【０００４】 前記切欠部８ｇはファンカバー８の頂部壁面８ｆに形成されている。点火栓１ ４は、シリンダヘッドに対してファンカバー８側へ倒れた状態でねじ止めされ、 その先端は燃焼室３ｃに臨んで設けられている。 上記のように構成された点火栓を交換するときには、点火栓キャップを外して 工具２０を窓８ｄから挿入してファンカバー８を外すことなく点火栓１４の取付 け、取外しができるように構成されている。The cutout portion 8g is formed on the top wall surface 8f of the fan cover 8. The spark plug 14 is screwed to the cylinder head in a state of being tilted toward the fan cover 8 side, and its tip is provided so as to face the combustion chamber 3c. When replacing the spark plug constructed as described above, the spark plug cap is removed, the tool 20 is inserted through the window 8d, and the spark plug 14 can be attached and removed without removing the fan cover 8. ing.
【０００５】[0005]
【考案が解決しようとする課題】 ところが前記のように点火栓がシリンダに傾斜して取付けられた従来構造では 、点火栓を脱着する際プラグレンチにより点火プラグに最も近いフィンが傷付く ことがしばしばある。又特にレンチの２面巾部がシリンダフィンの上面と平行に なった場合、プラグとシリンダのフィンの間にプラグレンチが深くはさまってし まい、点火プラグの締付が充分行われない場合がある。However, in the conventional structure in which the spark plug is inclined and attached to the cylinder as described above, the fin closest to the spark plug is often scratched by the plug wrench when the spark plug is detached and attached. is there. Also, especially when the width across flats of the wrench is parallel to the upper surface of the cylinder fin, the plug wrench may be deeply sandwiched between the plug and the fin of the cylinder, and the ignition plug may not be sufficiently tightened.
【０００６】 本考案の目的は前記従来装置の問題点を解消し、シリンダのフィンを傷付ける ことなくプラグレンチで確実に点火プラグの締付が可能な２サイクルエンジンの シリンダを提供するにある。An object of the present invention is to solve the problems of the conventional device and to provide a cylinder of a two-cycle engine in which a spark wrench can be securely tightened without damaging the fins of the cylinder.
【０００７】[0007]
本考案の２サイクルエンジンのシリンダは点火プラグをシリンダに傾斜して取 付けたものにおいて、点火プラグ締付ねじボスの周囲の任意の位置でプラグレン チの挿入方向端面にストッパをシリンダと一体的に成形したことを特徴としてい る。 In the cylinder of the two-cycle engine of the present invention, the spark plug is inclinedly attached to the cylinder, and a stopper is integrally formed with the cylinder at an arbitrary position around the spark plug tightening screw boss at the end face in the insertion direction of the plug lench. It is characterized by being molded.
【０００８】[0008]
点火プラグによって点火栓を脱着する際、プラグレンチの先端の六角部が点火 プラグの六角部に嵌め込まれるが、点火プラグ締付ねじボス部の端面に設けられ た前記端面ストッパのため、レンチが奥まで入ることがなくなり、フィンを傷付 けることはない。又レンチの対辺部が前記ストッパのためシリンダ内にはさまる ことがなくなるので、プラグの締付けが確実となる。 When removing the spark plug with the spark plug, the hexagonal part of the tip of the plug wrench fits into the hexagonal part of the spark plug. It will not get in and will not damage the fins. Also, since the opposite side of the wrench does not get caught in the cylinder because of the stopper, the plug can be tightened securely.
【０００９】[0009]
以下図１〜３を参照し本考案の一実施例について説明する。 図１はエンジンの点火プラグの取付状態断面図、図２は点火プラグ付近の拡大 図、図３は図２のIII 矢視図である。 点火プラグ５４を脱着操作時には図の如くシリンダカバー５６のプラグレンチ 挿入穴５６ａよりプラグレンチ５５を挿入し、該レンチ５５の六角部５５ａを点 火プラグ六角部５４ａに嵌合させ、図２に示すプラグレンチ端面５５ｂがシリン ダ５１のプラグ取付用ねじボス５１ａとシリンダフィン５２の間に設けたストッ パ５３に当接してプラグレンチ５５の差込み深さが余り深くならないようにして いる。 An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a sectional view of the engine ignition plug in a mounted state, FIG. 2 is an enlarged view of the vicinity of the ignition plug, and FIG. When the ignition plug 54 is attached or detached, the plug wrench 55 is inserted through the plug wrench insertion hole 56a of the cylinder cover 56 as shown in the figure, and the hexagonal portion 55a of the wrench 55 is fitted to the ignition plug hexagonal portion 54a, as shown in FIG. The end surface 55b of the plug wrench abuts on the stopper 53 provided between the plug mounting screw boss 51a of the cylinder 51 and the cylinder fin 52 so that the insertion depth of the plug wrench 55 does not become too deep.
【００１０】 従ってこの場合、図２の２点鎖線で示す状態の時でもプラグレンチ５５の六角 部頂点部がシリンダフィン５２に接触しないようにすると共に、プラグ５４の六 角部５４ａとプラグレンチ５５の六角部５５ａ部が確実にラップするような図２ 〜３に図示の板状で高さｌのストッパを設けたことを特徴としている。Therefore, in this case, the hexagonal apex of the plug wrench 55 is prevented from coming into contact with the cylinder fin 52 even in the state shown by the two-dot chain line in FIG. It is characterized in that a plate-shaped stopper having a height of l shown in FIGS.
【００１１】 次に前記実施例の作用について説明する。 前記ストッパ５３を設けることにより、点火プラグ５４の脱着操作時プラグレ ンチ５５の六角頂点部５５ｃ又は対辺部５５ｄからフィン５２までの間隙が拡大 すると共に間隙変化率が縮小するため、操作性が向上すると同時に、プラグレン チ５５の六角対辺部５５ｃがシリンダフィン５２に当たり、締付時回転方向の抵 抗により締付トルクの不足を生じることがなくなる。 なお図１〜３において５６はシリンダカバーであり５６ａはプラグレンチ５５ の挿入穴を示し、５７はマフラカバー、５８はマフラ（図示せず）のガスケット 、５９はインシュレータ（図示せず）のガスケット、６０はピストンを示す。Next, the operation of the above embodiment will be described. By providing the stopper 53, the gap between the hexagonal apex 55c or the opposite side 55d of the plug lengh 55 or the opposite side 55d and the fin 52 is increased and the rate of change of the gap is reduced when the ignition plug 54 is attached / detached, so that the operability is improved. At the same time, the hexagonal opposite sides 55c of the plug lens 55 hit the cylinder fins 52, and the tightening torque is not insufficient due to the resistance in the rotating direction during tightening. 1 to 3, 56 is a cylinder cover, 56a is an insertion hole of the plug wrench 55, 57 is a muffler cover, 58 is a muffler (not shown) gasket, 59 is an insulator (not shown) gasket, Reference numeral 60 represents a piston.
【００１２】[0012]
空冷２サイクルエンジンのシリンダにプラグレンチ挿入用ストッパを新設する ことにより、点火プラグの脱着操作時、点火プラグ近傍のシリンダフィンがプラ グレンチにより傷つけられることがなくなり、又プラグレンチの対辺部がフィン の間にはさまる状態となることがなくなり、点火プラグの締付が確実化される。 By newly installing a plug wrench insertion stopper on the cylinder of the air-cooled two-cycle engine, the cylinder fin near the spark plug is not damaged by the plug wrench when the spark plug is attached / detached, and the opposite side of the plug wrench has a fin. The state of being sandwiched between them is eliminated, and the tightening of the spark plug is ensured.
【図１】本考案に係るエンジンシリンダ部分断面図。FIG. 1 is a partial sectional view of an engine cylinder according to the present invention.
【図２】図１の点火栓部拡大図。FIG. 2 is an enlarged view of an ignition plug portion of FIG.
【図３】図２のIII 矢視図。FIG. 3 is a view on arrow III in FIG.
【図４】従来例の図２応当図。FIG. 4 is a corresponding diagram of FIG. 2 of a conventional example.
５１…シリンダ、５１ａ…シリンダの点火プラグ締付ね
じボス、５２…シリンダフィン、５３…プラグレンチの
ストッパ、５４…点火プラグ、５５…プラグレンチ、５
６…シリンダカバー。51 ... Cylinder, 51a ... Cylinder ignition plug tightening screw boss, 52 ... Cylinder fin, 53 ... Plug wrench stopper, 54 ... Spark plug, 55 ... Plug wrench, 5
6 ... Cylinder cover.
Claims (1)
イクルエンジンのシリンダにおいて、点火プラグ締付ね
じボスの周囲の任意の位置でプラグレンチの挿入方向端
面にストッパをシリンダと一体的に突設したことを特徴
とする小形２サイクルエンジンのシリンダ。[Claims for utility model registration] [Claim 1] In a cylinder of a small two-cycle engine in which a spark plug is installed at an inclination, a stopper is provided at an end face in the insertion direction of a plug wrench at an arbitrary position around the spark plug tightening screw boss. A small two-cycle engine cylinder characterized in that the cylinder and the cylinder are integrally projected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991060989U JP2537528Y2 (en) | 1991-07-09 | 1991-07-09 | Two-stroke engine cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991060989U JP2537528Y2 (en) | 1991-07-09 | 1991-07-09 | Two-stroke engine cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH057970U true JPH057970U (en) | 1993-02-02 |
| JP2537528Y2 JP2537528Y2 (en) | 1997-06-04 |
Family
ID=13158358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991060989U Expired - Fee Related JP2537528Y2 (en) | 1991-07-09 | 1991-07-09 | Two-stroke engine cylinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2537528Y2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5844078U (en) * | 1981-07-09 | 1983-03-24 | エフア−ル・カイザ−・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Insect paper |
| JPS6168801U (en) * | 1984-10-05 | 1986-05-12 | ||
| JPH04103478U (en) * | 1991-02-14 | 1992-09-07 | 株式会社ムツシユ | adhesive peeling paper |
| JPH04103477U (en) * | 1991-02-14 | 1992-09-07 | 株式会社ムツシユ | adhesive peeling paper |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53117810U (en) * | 1977-02-26 | 1978-09-19 | ||
| JPS56103624U (en) * | 1980-01-11 | 1981-08-13 | ||
| JPH0285848U (en) * | 1988-12-22 | 1990-07-06 |
-
1991
- 1991-07-09 JP JP1991060989U patent/JP2537528Y2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53117810U (en) * | 1977-02-26 | 1978-09-19 | ||
| JPS56103624U (en) * | 1980-01-11 | 1981-08-13 | ||
| JPH0285848U (en) * | 1988-12-22 | 1990-07-06 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5844078U (en) * | 1981-07-09 | 1983-03-24 | エフア−ル・カイザ−・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Insect paper |
| JPS6168801U (en) * | 1984-10-05 | 1986-05-12 | ||
| JPH04103478U (en) * | 1991-02-14 | 1992-09-07 | 株式会社ムツシユ | adhesive peeling paper |
| JPH04103477U (en) * | 1991-02-14 | 1992-09-07 | 株式会社ムツシユ | adhesive peeling paper |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2537528Y2 (en) | 1997-06-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19970114 |
|
| LAPS | Cancellation because of no payment of annual fees |