JPH0229285B2 - - Google Patents
Info
- Publication number
- JPH0229285B2 JPH0229285B2 JP59086197A JP8619784A JPH0229285B2 JP H0229285 B2 JPH0229285 B2 JP H0229285B2 JP 59086197 A JP59086197 A JP 59086197A JP 8619784 A JP8619784 A JP 8619784A JP H0229285 B2 JPH0229285 B2 JP H0229285B2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- cylinder part
- clutch
- housing
- inner cylinder
- 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
- 239000000463 material Substances 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims 2
- 238000000465 moulding Methods 0.000 claims 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241001494496 Leersia Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Harvester Elements (AREA)
Description
【発明の詳細な説明】
本考案は、クラツチを覆うハウジング部と、こ
のハウジング部の前部に設けた外筒部と、この外
筒部の内部に設けられてアウターパイプを保持す
るための内筒部と、この内筒部とクラツチとの間
に設けられて伝動軸を軸支する軸受部とを備えた
刈払機のクラツチハウジングに係るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention includes a housing part that covers a clutch, an outer cylinder part provided in the front part of this housing part, and an inner cylinder part provided inside this outer cylinder part for holding an outer pipe. This invention relates to a clutch housing for a brush cutter that includes a cylindrical portion and a bearing portion that is provided between the inner cylindrical portion and the clutch and pivotally supports a transmission shaft.
従来、この種の刈払機のクラツチハウジングに
おいては、内筒部は軸受部、外筒部と別体に形成
され、この外筒部と内筒部との間をゴム等の防振
用緩衝体を介して焼付接着していた。このため焼
付接着の際に、内筒部を保持するための金型の構
造が複雑となり、また作業が厄介であり、しかも
内筒部の中心精度を精密にすることが困難で、伝
動軸の損耗、切損の原因となつていた。 Conventionally, in the clutch housing of this type of brush cutter, the inner cylinder part is formed separately from the bearing part and the outer cylinder part, and a vibration-proofing shock absorber made of rubber or the like is inserted between the outer cylinder part and the inner cylinder part. It was glued by baking. For this reason, the structure of the mold for holding the inner cylinder becomes complicated during baking adhesion, and the work is troublesome.Moreover, it is difficult to precisely center the inner cylinder, and the transmission shaft This caused wear and tear.
本発明は、内筒部を軸受部を介して、外筒部と
１体に鋳造し、内筒部、軸受部、外筒部の間に形
成された空間にゴム等の防振用緩衝材を充填、接
着してのち、内筒部と軸受部、外筒部との間を旋
削加工により切り離すことによつて、焼付等の接
着加工を容易とし、しかも、内筒部の中心精度を
向上して、伝動軸の損耗、切損を防止しようとす
るものである。 In the present invention, the inner cylindrical part is cast as one body with the outer cylindrical part via the bearing part, and a vibration-proof cushioning material such as rubber is used in the space formed between the inner cylindrical part, the bearing part, and the outer cylindrical part. After filling and bonding, the inner cylinder part, bearing part, and outer cylinder part are separated by turning, which facilitates bonding processes such as baking, and improves the centering accuracy of the inner cylinder part. This is intended to prevent wear and tear on the transmission shaft.
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。 Hereinafter, one embodiment of the present invention will be explained with reference to the drawings.
A detailed explanation will be provided.
図において、１は回転刃３を回転自在に軸支す
る軸受体５とエンジン７とを連結するアウターパ
イプ、９はアウターパイプ１に固着する握り部、
１１はアウターパイプ１に固着するハンドル１３
に設けた握り部である。１５はエンジン７のクラ
ンク軸１７の１端に設けたクラツチで、外周に近
接して設けたクラツドラム１９に遠心力によつて
接続する。２１はクラツチドラム１９のボス部２
３を軸支するベアリング、２５はベアリング２１
を支持する軸受部である。２６はベアリング２１
を軸受部２５に係止するスナツプリングである２
７はクラツチドラム１９の前側面に設けた、スナ
ツプリング２６を取り付け、取り外ずしするため
の切欠孔で、応力集中を避けるために３個設けら
れている。切欠孔２７の内、外周縁部は円弧状に
形成されているので、スナツプリング２６の取り
付け、取り外ずしは容易である。２８はエンジン
７の動力を回転刃３に伝達するための伝動軸で、
１端はスプライン２９によつてボス部２３に係合
している。３０はこの係合を容易とするために伝
動軸２８の先端に設けた傾斜部である。伝動軸２
８はボス部２３、ベアリング２１を介して軸受部
２５に軸支されている。３１はクラツチ１５を覆
うハウジング部で、前部に外筒部３３が形成さ
れ、外筒部３３の内部には内筒部３５が設けられ
ている。軸受部２５はクラツチ１５と外筒部３
３、内筒部３５との間の位置に設けられ、クラツ
チ１５側の内壁に突出して環状のリブ３６が設け
られている。リブ３６はクラツチドラム１９の前
側面に近接して適宜な間隙をもつて対面し、クラ
ツチドラム１９の組み付け時に不用意な力が加つ
て変形しようとしたときに、クラツチドラム１９
の前側面を保持して変形を防止しようとするもの
である。３７は外筒部３３、内筒部３５、軸受部
２１との間に形成された空間部３９内に充填さ
れ、焼付け接着された防振用緩衝材である。４１
は内筒部３５を軸方向に切り欠いて設けた切欠
部、４３は切欠部４１を横切るボルトで、内筒部
３５内に嵌合するアウターパイプ１の１端を締め
付け固定する。 In the figure, 1 is an outer pipe that connects the engine 7 to a bearing body 5 that rotatably supports the rotary blade 3; 9 is a grip portion that is fixed to the outer pipe 1;
11 is a handle 13 fixed to the outer pipe 1
It is a grip part provided in the. Reference numeral 15 designates a clutch provided at one end of the crankshaft 17 of the engine 7, and is connected by centrifugal force to a clutch drum 19 provided close to the outer periphery. 21 is the boss portion 2 of the clutch drum 19
3 is the bearing that supports the shaft, 25 is the bearing 21
This is a bearing that supports the 26 is bearing 21
2, which is a snap spring that locks the
Reference numeral 7 denotes notch holes provided on the front side of the clutch drum 19 for attaching and removing the snap springs 26, and three notches are provided in order to avoid stress concentration. Since the outer peripheral edge of the notch hole 27 is formed in an arc shape, the snap spring 26 can be easily attached and removed. 28 is a transmission shaft for transmitting the power of the engine 7 to the rotary blade 3;
One end is engaged with the boss portion 23 via a spline 29 . Reference numeral 30 denotes an inclined portion provided at the tip of the transmission shaft 28 to facilitate this engagement. Transmission shaft 2
8 is pivotally supported by a bearing part 25 via a boss part 23 and a bearing 21. Reference numeral 31 denotes a housing portion that covers the clutch 15, and has an outer cylindrical portion 33 formed at the front portion, and an inner cylindrical portion 35 provided inside the outer cylindrical portion 33. The bearing part 25 is connected to the clutch 15 and the outer cylinder part 3.
3. An annular rib 36 is provided at a position between the inner cylindrical portion 35 and protrudes from the inner wall on the clutch 15 side. The ribs 36 are close to the front side of the clutch drum 19 and face each other with an appropriate gap, so that when the clutch drum 19 attempts to deform due to an unexpected force being applied during assembly, the rib 36 prevents the clutch drum 19 from deforming.
The purpose is to hold the front side of the body and prevent it from deforming. Reference numeral 37 denotes a vibration-proofing cushioning material filled in a space 39 formed between the outer cylinder part 33, the inner cylinder part 35, and the bearing part 21 and bonded by baking. 41
43 is a notch provided by cutting out the inner cylindrical portion 35 in the axial direction, and 43 is a bolt that crosses the notch 41 to tighten and fix one end of the outer pipe 1 that fits inside the inner cylindrical portion 35.
内筒部３５は軸受部２５を介してハウジング部
３１とともに外筒部３３に、アルミ合金で１体に
鋳造され、空間部３９にゴムの防振用緩衝材３７
を充填して焼付後、内筒部３５と軸受部２５との
間の切断部４５において鋳造部分を旋削加工によ
つて内径部から切削して切り離したものである。 The inner cylindrical part 35 is integrally cast with the housing part 31 and the outer cylindrical part 33 from aluminum alloy through the bearing part 25, and a rubber vibration-proof cushioning material 37 is provided in the space 39.
After filling and baking, the cast part is cut and separated from the inner diameter part by turning at the cutting part 45 between the inner cylinder part 35 and the bearing part 25.
以上の実施例において、エンジン７の動力は、
クラツチ１５、クラツチドラム１９、伝動軸２８
を経て回転刃３を回転し、作業者は両手で握り部
９，１１を把持して地上の草等の刈払作業を行な
うものである。エンジン７の振動は、防振用緩衝
材３７によつて防振されてハウジング部３１から
アウターパイプ１に伝達されないので、アウター
パイプ１に設けた握り部９，１１を把持する作業
者の手に伝播することがない。 In the above embodiment, the power of the engine 7 is
Clutch 15, clutch drum 19, transmission shaft 28
The rotary blade 3 is then rotated, and the operator grasps the grips 9 and 11 with both hands to cut grass, etc. on the ground. The vibrations of the engine 7 are prevented from being transmitted from the housing part 31 to the outer pipe 1 because they are damped by the vibration-proofing cushioning material 37. There is no propagation.
本発明は請求の範囲に記載のとおりの製造方法
であるので、刈払機のクラツチハウジングを容易
に製作することができるとともに、内筒の取付中
心位置の精度を向上して、伝動軸の損傷を防止す
ることができるものである。 Since the present invention is a manufacturing method as described in the claims, it is possible to easily manufacture a clutch housing for a brush cutter, and it also improves the accuracy of the mounting center position of the inner cylinder and prevents damage to the transmission shaft. It is something that can be prevented.
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図は本発明に係るクラツチハウジングを備
えた刈払機の斜視説明図、第２図は要部の側断面
図、第３図は第２図の―線の要部の正断面
図、第４図は第２図の―線の正断面図であ
る。
（図面の主要な部分を表わす符号の説明）、１
……アウターパイプ、１５……クラツチ、２５…
…軸受部、２８……伝動軸、３１……ハウジング
部、３３……外筒部、３５……内筒部、３７……
防振用緩衝材、３９……空間部、４５……切断部
分。
Fig. 1 is a perspective explanatory view of a brush cutter equipped with a clutch housing according to the present invention, Fig. 2 is a side sectional view of the main part, Fig. 3 is a front sectional view of the main part taken along the line - FIG. 4 is a front sectional view taken along the line -- in FIG. 2. (Explanation of symbols representing main parts of drawings), 1
...Outer pipe, 15...Clutch, 25...
... bearing part, 28 ... transmission shaft, 31 ... housing part, 33 ... outer cylinder part, 35 ... inner cylinder part, 37 ...
Anti-vibration cushioning material, 39...space section, 45...cut section.
Claims (1)
記ハウジング部３１の前部に設けた外筒部３３
と、前記外筒部３３の内部に伝動軸２８を軸支す
る軸受部２５と、前記軸受部２５の前方にアウタ
ーパイプ１を保持するための内筒部３５とを備え
たクラツチハウジングにおいて、前記外筒部３３
と前記内筒部３５とを、前記軸受部２５を介して
１体に鋳造成形する第１工程と、前記外筒部３３
と前記内筒部３５と前記軸受部２５との間に形成
された空間部３９に防振用緩衝材３７を充填して
１体的に接着する第２工程と、前記内筒部３５と
前記軸受部２５との間の鋳造部分を切断部分４５
において旋削加工によつて切断する第３工程とよ
りなる刈払機のクラツチハウジングの製造方法。 ２ クラツチ１５を覆うハウジング部３１と、前
記ハウジング部３１の前部に設けた外筒部３３
と、前記外筒部３３の内部に伝動軸２８を軸支す
る軸受部２５と、前記軸受部２５の前方にアウタ
ーパイプ１を保持するための内筒部３５とを備え
たクラツチハウジングにおいて、前記外筒部３３
と前記内筒部３５とを、前記軸受部２５を介して
１体に鋳造成形する第１工程と、前記外筒部３３
と前記内筒部３５と前記軸受部２５との間に形成
された空間部３９に防振用緩衝材３７を充填して
１体的に接着する第２工程と、前記内筒部３５と
前記軸受部２５との間の鋳造部分を切断部分４５
において旋削加工によつて切断する第３工程とよ
りなる製造方法によつて製造された刈払機のクラ
ツチハウジング。[Claims] 1. A housing part 31 that covers the clutch 15, and an outer cylinder part 33 provided at the front part of the housing part 31.
In the clutch housing, the clutch housing includes a bearing part 25 for pivotally supporting the transmission shaft 28 inside the outer cylinder part 33, and an inner cylinder part 35 for holding the outer pipe 1 in front of the bearing part 25. Outer cylinder part 33
a first step of casting and molding the inner cylindrical portion 35 and the inner cylindrical portion 35 into one body through the bearing portion 25;
a second step of filling the space 39 formed between the inner cylinder part 35 and the bearing part 25 with a vibration-proof cushioning material 37 and bonding the inner cylinder part 35 and the bearing part 25 together; Cutting part 45 of the cast part between bearing part 25
A method of manufacturing a clutch housing for a brush cutter, comprising: a third step of cutting the clutch housing by turning. 2. A housing part 31 that covers the clutch 15, and an outer cylinder part 33 provided at the front part of the housing part 31.
In the clutch housing, the clutch housing includes a bearing part 25 for pivotally supporting the transmission shaft 28 inside the outer cylinder part 33, and an inner cylinder part 35 for holding the outer pipe 1 in front of the bearing part 25. Outer cylinder part 33
a first step of casting and molding the inner cylindrical portion 35 and the inner cylindrical portion 35 into one body through the bearing portion 25;
a second step of filling the space 39 formed between the inner cylinder part 35 and the bearing part 25 with a vibration-proof cushioning material 37 and bonding the inner cylinder part 35 and the bearing part 25 together; Cutting part 45 of the cast part between bearing part 25
A clutch housing for a brush cutter manufactured by a manufacturing method comprising a third step of cutting by turning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59086197A JPS60241813A (en) | 1984-05-01 | 1984-05-01 | Clutch housing of reamer and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59086197A JPS60241813A (en) | 1984-05-01 | 1984-05-01 | Clutch housing of reamer and its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60241813A JPS60241813A (en) | 1985-11-30 |
| JPH0229285B2 true JPH0229285B2 (en) | 1990-06-28 |
Family
ID=13880054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59086197A Granted JPS60241813A (en) | 1984-05-01 | 1984-05-01 | Clutch housing of reamer and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60241813A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2557400Y2 (en) * | 1991-03-28 | 1997-12-10 | 株式会社ニッカリ | Brush cutter clutch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5917138Y2 (en) * | 1978-03-20 | 1984-05-19 | 株式会社ニツカリ | brush cutter |
-
1984
- 1984-05-01 JP JP59086197A patent/JPS60241813A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60241813A (en) | 1985-11-30 |
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