JPH0365928B2 - - Google Patents
Info
- Publication number
- JPH0365928B2 JPH0365928B2 JP1271831A JP27183189A JPH0365928B2 JP H0365928 B2 JPH0365928 B2 JP H0365928B2 JP 1271831 A JP1271831 A JP 1271831A JP 27183189 A JP27183189 A JP 27183189A JP H0365928 B2 JPH0365928 B2 JP H0365928B2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- square
- transmission shaft
- connecting rod
- boss
- 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
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000002184 metal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 241001494496 Leersia Species 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Harvester Elements (AREA)
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、１端に、クラツチドラムのボス軸に
係合する角軸部を備え、エンジンの動力を回転刃
に伝達するための伝動軸に係るものである。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention has a square shaft portion at one end that engages with a boss shaft of a clutch drum, and transmits engine power to a rotary blade. This relates to a transmission shaft for
（従来の技術および解決しようとする課題）
従来、この種の伝動軸は、金属の丸棒の先端を
機械切削して形成された角軸部が設けられてい
た。したがつて、機械切削によるため加工が厄介
で、加工費が高くなり、しかも金属丸棒では重量
大になり、作業者の疲労が大きく作業能率に支障
を生じていた。(Prior Art and Problems to be Solved) Conventionally, this type of transmission shaft has been provided with a square shaft portion formed by machine cutting the tip of a metal round bar. Therefore, machining is complicated and expensive due to mechanical cutting, and the metal round bar is heavy, causing great fatigue to workers and hindering work efficiency.
（課題を解決するための手段および作用）
本発明は、円形の金属管の１端にクラツチドラ
ムのボス軸に形成した係合孔に係合する角軸部を
断面角型に押圧、成形して設けたもので、重量が
軽量で、しかも加工容易な刈払機の伝動軸を提供
しようとするものである。
(Means and Effects for Solving the Problems) The present invention involves pressing and forming a square shaft portion into a square cross section at one end of a circular metal tube to engage an engagement hole formed in a boss shaft of a clutch drum. The present invention aims to provide a transmission shaft for a brush cutter that is light in weight and easy to process.
（実施例）
以下、図面により本発明の１実施例について詳
細な説明を行なう。(Example) Hereinafter, one example of the present invention will be described in detail with reference to the drawings.
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５
を軸支する軸受体、７はエンジン９と軸受体３を
連結する連結杆、１１は連結杆７に固着するハン
ドル１３の両端に設けた握り部、１５はエンジン
９の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
は連結杆７の一部を覆う保護体で、作業者の腰が
連結杆７に衝突することを防ぐものである。２３
はエンジン９のクランク軸２５に固着する遠心ク
ラツチ、２７は遠心クラツチ２３の外周に近接す
るクラツチドラムで、中心部に固着するボス軸２
９においてベアリング３１を介してクラツチハウ
ジング１７に軸支されている。クラツチハウジン
グ１７は連結杆７の１端を嵌合し、軸方向の切欠
溝３３を横切つて設けたボルト３５によつて締め
付け、固定している。ハンガー１５はクラツチハ
ウジング１７の上部に突出して設けたブラケツト
３７にねじ３９によつて固着されている。４１は
伝動軸で、断面円形の金属管の軸本体４３の１端
を、プレスによつて押圧加工して断面４角に形成
した角軸部４５が設けられている。角軸部４５は
ボス軸２９に設けた４角形の係合孔４７に係合し
ている。 In the figure, numeral 1 indicates a brush cutter, which is constructed as follows. In other words, 3 is the rotary blade 5
7 is a connecting rod that connects the engine 9 and the bearing body 3; 11 is a grip provided at both ends of the handle 13 that is fixed to the connecting rod 7; and 15 is fixed to a clutch housing 17 of the engine 9. The lower end of the shoulder strap 19 is secured by the hanger. 21
is a protective body that covers a part of the connecting rod 7 and prevents the worker's lower back from colliding with the connecting rod 7. 23
2 is a centrifugal clutch that is fixed to the crankshaft 25 of the engine 9; 27 is a clutch drum that is close to the outer periphery of the centrifugal clutch 23; and a boss shaft 2 that is fixed to the center of the clutch drum.
9 is pivotally supported by the clutch housing 17 via a bearing 31. One end of the connecting rod 7 is fitted into the clutch housing 17, and the clutch housing 17 is fixed by being tightened with a bolt 35 provided across the notched groove 33 in the axial direction. The hanger 15 is fixed to a bracket 37 projecting from the upper part of the clutch housing 17 by screws 39. Reference numeral 41 denotes a transmission shaft, and is provided with a square shaft portion 45 formed by pressing one end of a shaft main body 43, which is a metal tube with a circular cross section, into a square cross section. The square shaft portion 45 engages with a square engagement hole 47 provided in the boss shaft 29.
以上の実施例において、エンジン９の動力は、
クランク軸２５から遠心クラツチ２３、クラツチ
ドラム２７、ボス軸２９を経て伝動軸４１に伝達
され回転刃５を回転せしめる。作業者は肩掛バン
ド１９を肩に掛けて刈払機１を懸垂し、両手で握
り部１１，１１を把持して、回転する回転刃５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。 In the above embodiment, the power of the engine 9 is
The power is transmitted from the crankshaft 25 to the power transmission shaft 41 via the centrifugal clutch 23, clutch drum 27, and boss shaft 29, causing the rotary blade 5 to rotate. The worker suspends the brush cutter 1 by hanging the shoulder strap 19 over his shoulder, holds the grips 11, 11 with both hands, and uses the rotating rotary blade 5 to cut grass, etc. on the ground. It is.
本発明は、請求の範囲に記載のとおりの構成で
あるから、伝動軸を軽量にして作業を容易とする
とともに、加工容易で安価に製作することができ
るものである。
Since the present invention has the configuration as described in the claims, the transmission shaft can be made lightweight to facilitate work, and can be easily processed and manufactured at low cost.
なお、本発明における係合部は断面４角形に限
定するものではなく、５角形、６角形のごとく多
角形に形成してもよく、また、係合部端面を適宜
閉鎖してもよい。 Note that the engaging portion in the present invention is not limited to a rectangular cross section, but may be formed in a polygonal shape such as a pentagon or a hexagon, and the end surface of the engaging portion may be closed as appropriate.
なお、本発明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発明の技
術的範囲を限定するものではない。 It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments as well. Further, the symbols shown in the claims do not limit the technical scope of the present invention.
第１図は本発明に係る伝動軸を備えた刈払機の
斜視説明図、第２図は本発明の１実施例の側断面
図、第３図、第４図はそれぞれ要部の側面図、正
面図である。
３…回転刃、７…連結杆、２７…クラツチドラ
ム、２９…ボス軸、４１…伝動軸、４３…軸本
体、４５…角軸部、４７…係合孔。
FIG. 1 is a perspective explanatory view of a brush cutter equipped with a transmission shaft according to the present invention, FIG. 2 is a side sectional view of one embodiment of the present invention, FIGS. 3 and 4 are side views of essential parts, respectively, It is a front view. 3... Rotating blade, 7... Connecting rod, 27... Clutch drum, 29... Boss shaft, 41... Transmission shaft, 43... Shaft body, 45... Square shaft portion, 47... Engagement hole.
Claims (1)
連結する管状の連結杆７を設け、前記連結杆７内
を貫通する管状の伝動軸４１の軸本体４３の１端
を、クラツチドラム２７のボス軸２９に係合する
刈払機の伝動軸において、前記軸本体４３の１端
を断面角型に押圧、成形して角軸部４５を形成
し、前記角軸部４５を前記ボス軸２９に形成した
係合孔４７に嵌入して設けたことを特徴とする刈
払機の伝動軸。1. A tubular connecting rod 7 is provided that connects the bearing body 3 that pivotally supports the cutting blade 5 and the engine 9, and one end of the shaft body 43 of the tubular power transmission shaft 41 passing through the connecting rod 7 is connected to the clutch drum. In the power transmission shaft of the brush cutter that engages with the boss shaft 29 of No. 27, one end of the shaft body 43 is pressed and formed into a square cross section to form a square shaft portion 45, and the square shaft portion 45 is connected to the boss shaft. 29. A power transmission shaft for a brush cutter, which is provided by fitting into an engagement hole 47 formed in 29.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1271831A JPH02163004A (en) | 1989-10-20 | 1989-10-20 | Transmission shaft of bush cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1271831A JPH02163004A (en) | 1989-10-20 | 1989-10-20 | Transmission shaft of bush cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02163004A JPH02163004A (en) | 1990-06-22 |
| JPH0365928B2 true JPH0365928B2 (en) | 1991-10-15 |
Family
ID=17505471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1271831A Granted JPH02163004A (en) | 1989-10-20 | 1989-10-20 | Transmission shaft of bush cutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02163004A (en) |
-
1989
- 1989-10-20 JP JP1271831A patent/JPH02163004A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02163004A (en) | 1990-06-22 |
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