JPH0711549Y2 - Anti-vibration device for brush cutter - Google Patents

Anti-vibration device for brush cutter

Info

Publication number
JPH0711549Y2
JPH0711549Y2 JP1563688U JP1563688U JPH0711549Y2 JP H0711549 Y2 JPH0711549 Y2 JP H0711549Y2 JP 1563688 U JP1563688 U JP 1563688U JP 1563688 U JP1563688 U JP 1563688U JP H0711549 Y2 JPH0711549 Y2 JP H0711549Y2
Authority
JP
Japan
Prior art keywords
sleeve
connecting rod
clutch housing
engine
vibration isolator
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
Application number
JP1563688U
Other languages
Japanese (ja)
Other versions
JPH01121318U (en
Inventor
博 加藤
隆 大庭
Original Assignee
小松ゼノア株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 小松ゼノア株式会社 filed Critical 小松ゼノア株式会社
Priority to JP1563688U priority Critical patent/JPH0711549Y2/en
Publication of JPH01121318U publication Critical patent/JPH01121318U/ja
Application granted granted Critical
Publication of JPH0711549Y2 publication Critical patent/JPH0711549Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【考案の詳細な説明】 〔考案の目的〕 (産業上の利用分野) 本考案は、回転刃を回転自在に軸支する軸受体と、後方
に設けたエンジンとを管状の連結杆によつて連結して、
この連結杆に設けたハンドルを把持し、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ための刈
払機に係るものである。
[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention uses a tubular connecting rod to connect a bearing body that rotatably supports a rotary blade and an engine provided at the rear. Connect them,
The present invention relates to a brush cutter for gripping a handle provided on the connecting rod and performing cutting work of grass and the like on the ground by a rotating rotary blade.

(従来技術および解決しようとする課題) 従来、この種の刈払機においては、第4図に示すごと
く、連結杆1の後端に嵌合する円筒状のスリーブ3を、
軸方向に切り欠いた切欠溝5を横切るボルト7によつて
連結杆1に締め付け固定して設け、このスリーブ3の外
周に一体的に固着する防振体9を、エンジンの前端に設
けたクラツチハウジング11の前面にボルト13によつて固
着するカバー15の内径部に嵌合せしめるとともに、カバ
ー15とクラツチハウジング11との間に挟持,固定してい
た。このため、スリーブ3のボルト7の部分がクラツチ
ハウジング11,カバー15の外部に突出して作業者の衣服
がひつかかる等作業の邪魔となり、また防振体の撓みに
よつて、防振体を圧入する際に軸心が正確とならず、し
かも、エンジンの重量によつて連結杆とともに伝動軸が
湾曲して伝動軸の切損を生じることがあつた。又、実開
昭61-15929号公報に示すものは、クラッチハウジングの
内径孔に防振体を嵌着するものであるが、このものは防
振体の中間部を回止めとする構造であるため、防振の効
果、及び回止めの効果が不充分となるものであった。
(Prior art and problem to be solved) Conventionally, in this type of brush cutter, as shown in FIG. 4, a cylindrical sleeve 3 fitted to the rear end of the connecting rod 1 is
A clutch 7 provided at the front end of the engine is provided with a vibration isolator 9 fixed to the connecting rod 1 by a bolt 7 that crosses a notch groove 5 cut in the axial direction and integrally fixed to the outer periphery of the sleeve 3. The inner surface of the cover 15, which is fixed to the front surface of the housing 11 by the bolts 13, is fitted, and is sandwiched and fixed between the cover 15 and the clutch housing 11. For this reason, the bolt 7 portion of the sleeve 3 projects outside the clutch housing 11 and the cover 15 and interferes with the work such as the clothes of the operator being caught, and the vibration isolator is bent to press-fit the vibration isolator. When doing so, the shaft center was not accurate, and moreover, the transmission shaft was curved along with the connecting rod due to the weight of the engine, and the transmission shaft was sometimes damaged. In Japanese Utility Model Laid-Open No. 61-15929, a vibration isolator is fitted in an inner diameter hole of a clutch housing, which has a structure in which an intermediate portion of the vibration isolator serves as a rotation stopper. Therefore, the anti-vibration effect and the anti-rotation effect are insufficient.

〔考案の構成〕[Constitution of device]

(課題を解決するための手段および作用) 本考案は、スリーブの外周に適宜高さのリブを設けると
ともに、この外周に一体的に固着した防振体の外周を、
クラツチハウジングの内径部に嵌合するとともに、円周
方向に係止して設け、この防振体をクラツチハウジング
との間に挾持,固定するとともに、スリーブの前端部を
覆うカバーを設けたもので、防振体を中実にできるため
防振効果が大きく、外周回止めに基くモーメント腕の増
加によりクラッチハウジングからの外周離脱を防止でき
るほか、リブによつて防振体の撓みを規制して伝動軸の
折損を防ぎ、カバーによつてボルト部分が外部に突出し
て作業者の衣服にひつかかる等の支障をなくすものであ
る。
(Means and Actions for Solving the Problem) The present invention provides ribs of appropriate height on the outer circumference of the sleeve, and the outer circumference of the vibration isolator integrally fixed to the outer circumference.
It is fitted to the inner diameter of the clutch housing and locked in the circumferential direction. This vibration isolator is clamped and fixed between the clutch housing and the clutch housing, and a cover is provided to cover the front end of the sleeve. Since the vibration proof body can be made solid, the vibration proof effect is great, and the increase of the moment arm based on the outer circumferential rotation stop prevents the outer circumference from being disengaged from the clutch housing, and the ribs regulate the flexure of the vibration proof body for transmission. The shaft is prevented from being broken, and the cover eliminates the problem that the bolt portion is projected to the outside and the worker's clothes are caught.

(実施例) 以下、図面により本考案の一実施例について詳細な説明
を行なう。
Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

第1図〜第3図において、刈払機17はつぎのように構成
されている。すなわち、回転刃19を軸支する軸受体21
と、後方に設けたエンジン23とを管状の連結杆25によつ
て連結し、連結杆25の途中に握り部27とハンドル29が固
着し、さらにハンドル29に握り部31が設けられている。
連結杆25の後端には、円筒状のスリーブ33が嵌合し、ス
リーブ33は軸方向に切り欠いた切欠溝35を横切るボルト
37によつて連結杆25に締め付け固定されている。スリー
ブ33の外周には、適宜高さの、円周方向のリブ39と軸方
向の3個のリブ41が突出して設けられ、このリブ39,41
が適宜深さに埋設する直径のゴム製の防振体43がスリー
ブ33の外周に焼付固着されている。防振体43の外周はエ
ンジン23の前端のクラツチハウジング45の内径孔47に嵌
合し、しかも防振体43の外周に突出する突起片49,49が
クラツチハウジング45の内径孔47の外周筒部に切欠き形
成された切欠孔51,51に係合して円周方向の運動を規制
している。スリーブ33の前部には、半径方向にねじ53が
螺合し、連結杆25に設けた孔55に係合して、スリーブ33
を連結杆25の所定位置に位置決めしている。クラツチハ
ウジング45内にはベアリング57によつてクラツチドラム
59の軸部61が軸支され、軸部61に設けた角孔63に伝動軸
65の後端の角軸66が係合している。クラツチドラム59内
には、エンジン23のクランク軸(図示せず)の前端に装
着した遠心クラツチ(図示せず)が収容され、エンジン
23が所定の回転速度に上昇すると遠心力によつて接触し
てクラツチドラム59を回転せしめ、伝動軸65を経て回転
刃19を回転せしめるものである。スリーブ33の前部を覆
つてカバー67がボルト69によつてクラツチハウジング45
に固着され、間に防振体49を挾持している。
In FIGS. 1 to 3, the brush cutter 17 is configured as follows. That is, the bearing body 21 that pivotally supports the rotary blade 19
And the engine 23 provided at the rear are connected by a tubular connecting rod 25, a grip 27 and a handle 29 are fixed in the middle of the connecting rod 25, and a handle 31 is provided on the handle 29.
A cylindrical sleeve 33 is fitted to the rear end of the connecting rod 25, and the sleeve 33 is a bolt that crosses a notch groove 35 that is notched in the axial direction.
It is fastened and fixed to the connecting rod 25 by means of 37. On the outer circumference of the sleeve 33, a circumferential rib 39 and three axial ribs 41 of appropriate height are provided so as to project. These ribs 39, 41
A rubber vibration isolator 43 having a diameter to be buried in an appropriate depth is baked and fixed to the outer periphery of the sleeve 33. The outer periphery of the vibration isolator 43 is fitted into the inner diameter hole 47 of the clutch housing 45 at the front end of the engine 23, and the projecting pieces 49, 49 projecting to the outer periphery of the vibration isolator 43 are the outer peripheral cylinders of the inner diameter hole 47 of the clutch housing 45. The notch holes 51, 51 formed in the notches in the portions are engaged to restrict the movement in the circumferential direction. A screw 53 is screwed in the front portion of the sleeve 33 in the radial direction and engages with a hole 55 provided in the connecting rod 25, so that the sleeve 33
Is positioned at a predetermined position on the connecting rod 25. A bearing 57 is provided in the clutch housing 45 to provide a clutch drum.
The shaft 61 of 59 is pivotally supported, and the transmission shaft is supported in the square hole 63 provided in the shaft 61.
The square shaft 66 at the rear end of 65 is engaged. The clutch drum 59 accommodates a centrifugal clutch (not shown) attached to the front end of the crankshaft (not shown) of the engine 23.
When 23 rises to a predetermined rotation speed, they are brought into contact by centrifugal force to rotate the clutch drum 59 and rotate the rotary blade 19 via the transmission shaft 65. A cover 67 covers the front part of the sleeve 33 by means of bolts 69 and a clutch housing 45.
It is fixed to and has a vibration isolator 49 in between.

以上の構成において、エンジン23の動力は、クラツチド
ラム59,伝動軸65を経て回転刃19を回転せしめる。作業
者は握り部27,31を把持して回転刃19によつて地上の草
等を刈り払らうものである。スリーブ33の前端のボルト
37の部分はカバー67によつて覆われているので外部に突
出することがなく、作業者の衣服がからみ付いて作業の
支障となることがない。またリブ39,41の頂部とクラツ
チハウジンク45の内径部との間隙が適宜に近接して設け
られているので、防振体43が大きく撓むことがない。ま
た、防振体43は中実に形成できるため、振動吸収効果が
良好であり、外周回止めに基づくモーメント増加によ
り、防振体43の外周がクラッチハウジング45の内径孔47
から離脱することがない。
In the above structure, the power of the engine 23 causes the rotary blade 19 to rotate via the clutch drum 59 and the transmission shaft 65. The operator grips the grips 27 and 31 and uses the rotary blade 19 to mow grass and the like on the ground. Bolt on front end of sleeve 33
Since the portion 37 is covered by the cover 67, it does not project to the outside and the worker's clothes do not get caught in the work and interfere with the work. Further, since the gaps between the tops of the ribs 39 and 41 and the inner diameter of the clutch housing 45 are provided in close proximity to each other, the vibration isolator 43 does not largely bend. Further, since the vibration isolator 43 can be formed as a solid body, it has a good vibration absorption effect.
Never leave.

〔考案の効果〕[Effect of device]

本考案によれば、つぎのような効果を有するものであ
る。すなわち、(1)スリーブの端部のボルトがカバー
によつて覆われているので、外部の作業者の衣服等がひ
つかかることがない。(2)防振体を強く圧縮保持する
必要がないので組付時に連結杆,および連結杆内に軸支
される伝動軸の軸芯がずれることがない。(3)防振体
が大きく撓むことがないのでエンジンの重量によつて伝
動軸が湾曲することがない。(4)防振効果が良好で、
かつ、外周離脱を生ずることがない。
The present invention has the following effects. That is, (1) since the bolt at the end portion of the sleeve is covered by the cover, clothes of an external worker are not caught. (2) Since it is not necessary to strongly hold the vibration isolator in compression, the connecting rod and the transmission shaft axially supported in the connecting rod are not displaced during assembly. (3) Since the vibration isolator does not largely bend, the transmission shaft does not bend due to the weight of the engine. (4) Good anti-vibration effect,
In addition, there is no separation from the outer circumference.

なお、第4図において第1図〜第3図に示す符号と同一
の符号は同一の構成部分を表わすものである。
In FIG. 4, the same reference numerals as those shown in FIGS. 1 to 3 represent the same components.

【図面の簡単な説明】[Brief description of drawings]

第1図は本考案に係る装置を備えた刈払機の斜視説明
図、第2図は本考案の一実施例の側断面図、第3図は第
2図のIII-III線の正断面図、第4図は従来例の側断面
図である。 19……回転刃、21……軸受体 23……エンジン、25……連結杆 33……スリーブ、35……切欠溝 37……ボルト、39,41……リブ 43……防振体 45……クラツチハウジング 67……カバー
1 is a perspective explanatory view of a brush cutter equipped with the device according to the present invention, FIG. 2 is a side sectional view of an embodiment of the present invention, and FIG. 3 is a front sectional view taken along line III-III of FIG. FIG. 4 is a side sectional view of a conventional example. 19 …… Rotating blade, 21 …… Bearing body 23 …… Engine, 25 …… Coupling rod 33 …… Sleeve, 35 …… Notch groove 37 …… Bolt, 39,41 …… Rib 43 …… Vibration isolator 45… … Clutch housing 67 …… Cover

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】回転刃19を回転自在に軸支する軸受体21
と、後方に設けたエンジン23とを管状の連結杆25によっ
て連結して設けた刈払機において、前記連結杆25の後端
に嵌合する円筒状の、外周に適宜高さのリブ39,41を備
えたスリーブ33を、軸方向に切り欠いた切欠溝35を横切
るボルト37によって前記連結杆25に締め付け固定して設
け、前記スリーブ33の外周に一体的に固着する防振体43
を、前記エンジン23の前端に設けたクラッチハウジング
45の内径孔47に嵌合するとともにこの内径孔47の外周筒
部に切欠き形成された切欠孔51,51に外周突出の突起片4
9,49を嵌合して円周方向に係止して設け、前記防振体43
を前記クラッチハウジング45との間に挟持、固定すると
ともに前記スリーブ33の前端部を覆うカバー67を設けた
ことを特徴とする刈払機の防振装置。
1. A bearing body 21 for rotatably supporting a rotary blade 19.
In the brush cutter provided by connecting the engine 23 provided at the rear with the tubular connecting rod 25, a cylindrical rib fitted to the rear end of the connecting rod 25, with ribs 39, 41 having an appropriate height on the outer circumference. A vibration isolator 43, which is provided by tightening and fixing the sleeve 33 provided with the bolt 33 to the connecting rod 25 with a bolt 37 crossing a notch groove 35 cut in the axial direction and integrally fixed to the outer periphery of the sleeve 33.
Is a clutch housing provided at the front end of the engine 23.
The projection piece 4 that fits into the inner diameter hole 47 of the 45 and is formed in the notch holes 51, 51 formed in the outer peripheral cylindrical portion of the inner diameter hole 47 so as to project to the outer circumference.
9 and 49 are fitted and locked in the circumferential direction, and
Is provided between the clutch housing 45 and the clutch housing 45, and a cover 67 for covering the front end of the sleeve 33 is provided.
JP1563688U 1988-02-10 1988-02-10 Anti-vibration device for brush cutter Expired - Lifetime JPH0711549Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1563688U JPH0711549Y2 (en) 1988-02-10 1988-02-10 Anti-vibration device for brush cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1563688U JPH0711549Y2 (en) 1988-02-10 1988-02-10 Anti-vibration device for brush cutter

Publications (2)

Publication Number Publication Date
JPH01121318U JPH01121318U (en) 1989-08-17
JPH0711549Y2 true JPH0711549Y2 (en) 1995-03-22

Family

ID=31227851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1563688U Expired - Lifetime JPH0711549Y2 (en) 1988-02-10 1988-02-10 Anti-vibration device for brush cutter

Country Status (1)

Country Link
JP (1) JPH0711549Y2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621296Y2 (en) * 1989-07-10 1994-06-08 川崎重工業株式会社 Separation and connection structure in work machine
JP2567331Y2 (en) * 1993-07-22 1998-04-02 タナカ工業株式会社 Anti-vibration mechanism for brush cutter
WO2008047434A1 (en) * 2006-10-19 2008-04-24 Husqvarna Zenoah Co.,Ltd. Brush cutter
JP2012526210A (en) * 2009-10-16 2012-10-25 常州▲りん▼通展▲覧▼用品有限公司 Locking device for connection
JP2013102734A (en) * 2011-11-15 2013-05-30 Yamabiko Corp Pipe holder for working machine

Also Published As

Publication number Publication date
JPH01121318U (en) 1989-08-17

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