JPH0323051Y2 - - Google Patents
Info
- Publication number
- JPH0323051Y2 JPH0323051Y2 JP1984069712U JP6971284U JPH0323051Y2 JP H0323051 Y2 JPH0323051 Y2 JP H0323051Y2 JP 1984069712 U JP1984069712 U JP 1984069712U JP 6971284 U JP6971284 U JP 6971284U JP H0323051 Y2 JPH0323051 Y2 JP H0323051Y2
- Authority
- JP
- Japan
- Prior art keywords
- fan
- crankshaft
- oil seal
- bearing
- 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.)
- Expired
Links
- 238000007789 sealing Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241001494496 Leersia Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- Harvester Elements (AREA)
Description
【考案の詳細な説明】
本考案は、エンジンの駆動で回転する回転刃に
よつて地上の草等の刈り払らい作業を行なう刈払
機におけるフアンの軸封装置に係るものである。[Detailed Description of the Invention] The present invention relates to a shaft sealing device for a fan in a brush cutter that cuts grass on the ground using a rotary blade rotated by an engine.
従来、刈払機のエンジンの冷却用のフアンはク
ランク軸に固着されており、このクランク軸を支
持するベアリングのグリースが外部に流出するこ
とを防止するためにオイルシールがクランク軸に
嵌合して軸封していたが、刈り払らい作業中に飛
散する切屑等の挾雑片が、フアンの吸風口から吸
引されて、フアンのボス部とオイルシールの間の
間〓部に付着してからまり、オイルシールのリツ
プを損傷し、あるいは摩耗を早めていた。 Conventionally, the fan for cooling the engine of a brush cutter is fixed to the crankshaft, and an oil seal is fitted to the crankshaft to prevent grease from the bearings that support the crankshaft from leaking outside. Although the shaft was sealed, debris such as chips scattered during mowing work was sucked in from the fan's air intake port and adhered to the bottom part between the fan's boss and oil seal. This could damage the lip of the oil seal or accelerate its wear.
本考案は、このボス部とオイルシールとの間隙
部の外周を覆つて防塵カバー部を設けることによ
り、この間隙部に切屑等の塵埃の侵入を防ぎ、オ
イルシールのリツプの損傷を防止しようとするも
のである。 The present invention aims to prevent dust such as chips from entering the gap by providing a dustproof cover to cover the outer periphery of the gap between the boss and the oil seal, thereby preventing damage to the lip of the oil seal. It is something to do.
以下、図面により本考案の１実施例について詳
細な説明を行なう。 Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.
第１図〜第３図において、１は刈払機を示すも
ので、つぎのように構成されている。すなわち、
３は回転刃４を軸支する軸受体、５は軸受体３と
エンジン７とを連結する連結杆、９，９は連結杆
５に固着するハンドル１１の両端に設けた握り
部、１３は、エンジン７の遠心クラツチ１５を覆
うクラツチハウジング１７に固着するハンガー
で、肩掛バンド１９の下端が係止している。２１
は作業者の腰が衝突するのを防ぐ緩衝体である。
エンジン７はつぎのように構成されている。すな
わち、２３はクランクケース２５に固着するシリ
ンダー、２７は点火栓、２９はリコイルスタータ
ー、３１は燃料タンクである。３３はマグネツト
ホイルを兼ねたフアンで、クランク軸３５にナツ
ト３７，キー３９によつて固着され、内側面に翼
４１，４１が設けられ、外側面に遠心クラツチ１
５が設けられている。４３は遠心クラツチ１５の
外周に近接して設けたクラツチドラムで、ボス軸
４５においてクラツチハウジング１７にベアリン
グ４７を介して軸支されている。４９は連結杆５
を貫通する伝動軸で、１端は角軸５１によつてボ
ス軸４５に係合している。５３はフアン３３を覆
うフアンケース、５５はシリンダー２３を覆うシ
リンダーカバーである。５７はクランクケース２
５のフアン３３に対面して開口する吸風口であ
る。５９はクランク軸３５をクランクケース２５
の軸受部６０に軸支するベアリング、６１はスナ
ツプリング、６３はベアリング５９の外方に隣接
するオイルシールである。６５はフアン３３のボ
ス部６６とオイルシール６３との間の間隙部６７
の外周を覆う防塵カバー部で、クランクケース２
５の軸受部６０に突出し、ボス部６６の内端外周
が適宜間隙をもつて内径孔に嵌入している。 In FIGS. 1 to 3, numeral 1 indicates a brush cutter, which is constructed as follows. That is,
3 is a bearing body that pivotally supports the rotary blade 4; 5 is a connecting rod that connects the bearing body 3 and the engine 7; 9, 9 is a grip portion provided at both ends of the handle 11 that is fixed to the connecting rod 5; 13 is a A hanger is fixed to a clutch housing 17 that covers a centrifugal clutch 15 of the engine 7, and the lower end of the shoulder strap 19 is locked therein. 21
is a buffer that prevents the worker's lower back from colliding.
The engine 7 is constructed as follows. That is, 23 is a cylinder fixed to the crankcase 25, 27 is a spark plug, 29 is a recoil starter, and 31 is a fuel tank. Reference numeral 33 denotes a fan that also serves as a magnetic foil, which is fixed to the crankshaft 35 with a nut 37 and a key 39, and has wings 41, 41 on its inner surface, and a centrifugal clutch 1 on its outer surface.
5 is provided. Reference numeral 43 designates a clutch drum provided close to the outer periphery of the centrifugal clutch 15, and is pivotally supported by the clutch housing 17 via a bearing 47 at a boss shaft 45. 49 is connecting rod 5
A transmission shaft passes through the shaft, and one end thereof is engaged with the boss shaft 45 through a square shaft 51. 53 is a fan case that covers the fan 33, and 55 is a cylinder cover that covers the cylinder 23. 57 is crankcase 2
This is an air intake port that opens facing the fan 33 of No. 5. 59 connects the crankshaft 35 to the crankcase 25
61 is a snap spring, and 63 is an oil seal adjacent to the outside of the bearing 59. 65 is a gap 67 between the boss portion 66 of the fan 33 and the oil seal 63
A dustproof cover that covers the outer periphery of the crankcase 2.
The inner end outer periphery of the boss portion 66 is fitted into the inner diameter hole with an appropriate gap.
以上の実施例において、作業者は肩掛バンド１
９を肩に掛けて刈払機１を懸垂し、握り部９，９
を両手で把持して、エンジン７の駆動で回転する
回転刃４によつて地上の草等の刈り払らい作業を
行なうものである。フアン３３の回転によつて吸
風口５７から吸引された吸風は、フアンケース５
３に沿つて案内され、シリンダー２３の外周に送
風されてシリンダー２３を冷却する。刈り払らい
作業によつて飛散する切屑，塵埃の一部は吸風口
５７から吸引されるが防塵カバー部６５によつて
妨げられて間隙部６７内に侵入することがなく、
オイルシール６３のリツプが損傷することがな
い。また、オイルシールが摩耗して油脂が浸み出
したときには、防塵カバー部６５の内径底面を伝
わつて流出して、回転するフアンのボス部に触れ
ることがないので、油脂が遠心力によつて飛散し
てフアン，シリンダー外周等に付着し、さらに塵
埃が付着して、フアンの能力を低下し、シリンダ
ー冷却を阻害するというようなことがない。 In the above embodiment, the worker wears the shoulder strap 1
Suspend the brush cutter 1 by hanging the brush cutter 9 on your shoulder, and
The operator holds the blade with both hands and uses the rotary blade 4, which is rotated by the engine 7, to cut grass, etc. on the ground. The air sucked from the air intake port 57 by the rotation of the fan 33 is transferred to the fan case 5.
3 and is blown around the outer periphery of the cylinder 23 to cool the cylinder 23. Some of the chips and dust scattered during the mowing work are sucked in from the air intake port 57, but are prevented from entering the gap 67 because they are blocked by the dust cover 65.
The lip of the oil seal 63 will not be damaged. Furthermore, when the oil seal wears out and oil seeps out, it flows along the inner bottom surface of the dust-proof cover part 65 and does not come into contact with the boss of the rotating fan. There is no possibility that the dust will fly off and adhere to the fan, the outer periphery of the cylinder, etc., and that further dust will adhere, reducing the performance of the fan and inhibiting cylinder cooling.
本考案は、請求の範囲に記載のとおりの構成で
あるから、刈り払らい作業によつて飛散する切
屑，塵埃が吸風中に吸引されて、オイルシールと
フアンのボス部との間の間隙部に侵入することを
防ぎ、オイルシールのリツプの損耗を防止するこ
とができるものである。また吸風口の防塵網を廃
止して、吸風能力を向上することが可能となり、
しかもオイルシールの損耗したときに、油脂が飛
散することがなく、塵埃の付着によるシリンダー
の冷却の阻害を生じることがないものである
なお、本考案は前述の実施例に限定されるもの
ではなく、他の態様においても実施しうるもので
ある。また、請求の範囲に示す符号は本考案の技
術的範囲を限定するものではない。 Since the present invention has the configuration as described in the claims, the chips and dust scattered during the mowing work are sucked in during the intake air, and the gap between the oil seal and the boss of the fan is reduced. This prevents oil from entering the oil seal and prevents wear and tear on the lip of the oil seal. In addition, it is possible to eliminate the dustproof screen at the air intake port and improve the air intake capacity.
Moreover, when the oil seal wears out, oil and fat will not be scattered, and the cooling of the cylinder will not be inhibited due to the adhesion of dust.The present invention is not limited to the above-mentioned embodiments. , can also be implemented in other embodiments. Further, the symbols shown in the claims do not limit the technical scope of the present invention.
第１図は刈払機の斜視説明図、第２図は本考案
の１実施例の側断面図、第３図は要部の側断面図
である。
図面の主要な部分を表わす符号の説明、７……
エンジン、３３……フアン、３５……クランク
軸、５９……ベアリング、６０……軸受部、６３
……オイルシール、６５……防塵カバー部、６６
……ボス部、６７……間隙部。
FIG. 1 is a perspective explanatory view of a brush cutter, FIG. 2 is a side sectional view of one embodiment of the present invention, and FIG. 3 is a side sectional view of the main parts. Explanation of symbols representing main parts of the drawing, 7...
Engine, 33...Fan, 35...Crankshaft, 59...Bearing, 60...Bearing section, 63
...Oil seal, 65 ...Dust-proof cover section, 66
...Boss part, 67...Gap part.
Claims (1)
３３を設けるとともに、前記クランク軸３５をベ
アリング５９を介して軸支する軸受部６０に、前
記クランク軸３５を密封するオイルシール６３を
前記ベアリング５９の外方に隣設して設け、前記
軸受部６０の外端に突出する防塵カバー部６５の
内径孔に、前記フアン３３のボス部６６の内端の
外周を適宜な間隙をもつて嵌入して設けたことを
特徴とする刈払機におけるフアンの軸封装置。 A fan 33 that is fixed to the crankshaft 35 of the engine 7 is provided, and an oil seal 63 that seals the crankshaft 35 is attached to a bearing portion 60 that pivotally supports the crankshaft 35 via a bearing 59 on the outside of the bearing 59. The outer periphery of the inner end of the boss portion 66 of the fan 33 is fitted into the inner diameter hole of the dustproof cover portion 65 protruding from the outer end of the bearing portion 60 with an appropriate gap. A fan shaft sealing device for a brush cutter, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6971284U JPS60182730U (en) | 1984-05-15 | 1984-05-15 | Fan shaft sealing device for brush cutters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6971284U JPS60182730U (en) | 1984-05-15 | 1984-05-15 | Fan shaft sealing device for brush cutters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60182730U JPS60182730U (en) | 1985-12-04 |
| JPH0323051Y2 true JPH0323051Y2 (en) | 1991-05-20 |
Family
ID=30605645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6971284U Granted JPS60182730U (en) | 1984-05-15 | 1984-05-15 | Fan shaft sealing device for brush cutters |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60182730U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3876395T2 (en) * | 1987-12-17 | 1993-05-27 | White Consolidated Ind Inc | PORTABLE, ROTATING DEVICE. |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS572213B2 (en) * | 1975-09-17 | 1982-01-14 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6119617Y2 (en) * | 1980-03-25 | 1986-06-13 | ||
| JPS572213U (en) * | 1980-06-04 | 1982-01-07 |
-
1984
- 1984-05-15 JP JP6971284U patent/JPS60182730U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS572213B2 (en) * | 1975-09-17 | 1982-01-14 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60182730U (en) | 1985-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2984318B2 (en) | Portable work machine guided by hand | |
| JPH06173797A (en) | Intake device for engine | |
| CA1210286A (en) | Cylinder cover | |
| JPH0323051Y2 (en) | ||
| US5826555A (en) | Starter device | |
| WO2003036060A3 (en) | Vertical shaft internal combustion engine with overhead power take-off | |
| JPH064037Y2 (en) | Engine power transmission | |
| JPH0133821Y2 (en) | ||
| JPS5830417Y2 (en) | Brush cutter vibration isolator | |
| JPH0232819Y2 (en) | ||
| JPS6021938Y2 (en) | Harvester wrap prevention device | |
| JPS6018581Y2 (en) | Dust control equipment for air-cooled internal combustion engines | |
| JPS6129224Y2 (en) | ||
| JPH0621299Y2 (en) | Operation rod fixing device for brush cutter | |
| JPS6137046Y2 (en) | ||
| JPS6332598Y2 (en) | ||
| JPH0639547Y2 (en) | Drive with built-in anti-vibration | |
| JPS6347615Y2 (en) | ||
| JPH026738Y2 (en) | ||
| JPH0621297Y2 (en) | Tank mounting structure for portable work equipment | |
| JPS5922283Y2 (en) | Air cleaner device for agricultural machinery engines | |
| JPH0413390Y2 (en) | ||
| JPH0623218Y2 (en) | Cover mounting structure of brush cutter | |
| JPH0144739Y2 (en) | ||
| JPH0649950Y2 (en) | Ring fly protector for engine flywheel |