JPH0214341Y2 - - Google Patents
Info
- Publication number
- JPH0214341Y2 JPH0214341Y2 JP1984148304U JP14830484U JPH0214341Y2 JP H0214341 Y2 JPH0214341 Y2 JP H0214341Y2 JP 1984148304 U JP1984148304 U JP 1984148304U JP 14830484 U JP14830484 U JP 14830484U JP H0214341 Y2 JPH0214341 Y2 JP H0214341Y2
- Authority
- JP
- Japan
- Prior art keywords
- operating rod
- transmission shaft
- attached
- support
- clutch case
- 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
Landscapes
- Harvester Elements (AREA)
Description
本考案は、刈払機における伝動軸支承構造に関
し、特に操作桿内に配設される支承具の支持構造
に関するものである。
The present invention relates to a power transmission shaft support structure for a brush cutter, and particularly to a support structure for a support disposed within an operating rod.
操作桿の基端部にクラツチケースを介して原動
機を、先端部にギヤボツクスを介して刈刃をそれ
ぞれ装着した従来周知の刈払機において、例えば
実公昭40−2352号公報および実公昭51−46723号
公報に記載されているように、円管状の操作桿内
に支承具を、操作桿に対しねじや嵌合突起によつ
て回り止めして装着したものがある。
上記のほか従来の刈払機においては、支承具を
何らかの形で操作桿内に固定する手段を講じてい
るが、操作桿に孔をあけることは強度上好ましく
なく、支承具の固定手段に苦慮しているのが現状
である。
In conventional brush cutters in which a prime mover is attached to the base end of the operating rod via a clutch case, and a cutting blade is attached to the tip via a gear box, for example, Japanese Utility Model Publication No. 40-2352 and Utility Model Publication No. 51-46723 are disclosed. As described in the publication, there is a device in which a support is mounted inside a circular tube-shaped operating stick and is prevented from rotating relative to the operating stick using a screw or a fitting protrusion. In addition to the above, conventional brush cutters use some form of means to fix the support inside the operating stick, but drilling holes in the operating stick is undesirable in terms of strength, and it is difficult to find a way to fix the support. The current situation is that
本考案は、上記の問題点を解決すべくなされた
もので、操作桿に係止孔をあけることなく支承具
を容易に、しかも確実に回り止めして操作桿内に
配設し得るようにした刈払機における伝動軸支承
構造を提供することを目的とする。
The present invention was made to solve the above problems, and it is possible to easily and reliably prevent the support from rotating and install it inside the operating stick without drilling a locking hole in the operating stick. The purpose of the present invention is to provide a transmission shaft support structure for a brush cutter.
上記目的を達成するため、本考案は、上記操作
桿には、その長手方向に沿つて複数条の凹溝を形
成し、さらにその両端部には、該凹溝より浅い抜
け止め用の環状溝を凹設して、クラツチケース並
びにギヤボツクスを取付けるようにすると共に、
上記伝動軸を操作桿内に支承する支承具は、該操
作桿に凹設した環状溝の内径を通過し得る外形に
成形され、かつその長手方向に沿つて操作桿の凹
溝に嵌入する凹部を形成し、操作桿内に支承具を
間隔をあけて複数個配設して伝動軸を支承したこ
とを特徴とするものである。
In order to achieve the above object, the present invention has a plurality of concave grooves formed along the longitudinal direction of the operating rod, and an annular groove shallower than the concave grooves at both ends of the concave groove. is recessed so that the clutch case and gearbox can be attached, and
The support for supporting the transmission shaft in the operating stick is formed to have an outer shape that can pass through the inner diameter of an annular groove formed in the operating stick, and has a recess that fits into the groove of the operating stick along its longitudinal direction. The invention is characterized in that a plurality of supports are arranged at intervals within the operating rod to support the transmission shaft.
以下、図面を参照して本考案の一実施例を説明
する。
第１図において、符号１は中空の操作桿で、こ
の操作桿１には、基端部にエンジン２がクラツチ
ケース２ａを介して装着され、先端部にギヤボツ
クス３を介して刈刃４が取付けられている。前記
クラツチケース２ａとギヤボツクス３間の操作桿
１内には、第２図、第６図および第７図に示す伝
動軸５が挿通、支承され、エンジン２から回転動
力がギヤボツクス３、刈刃４に伝達されるように
なつている。クラツチケース２ａの前側の操作桿
１にはグリツプ６が取付けられ、このグリツプ６
の先端寄り側にループ状のハンドル桿７が装着さ
れ、このハンドル桿７に、エンジン２の回転を制
御するスロツトルレバー８が取付けられている。
また、操作桿１のギヤボツクス３近傍部分には刈
刃カバー９が装着されている。
前記操作桿１は、第４図、第５図および第７図
に示すように、周方向に等間隔の４条の凹溝１０
を長さ方向に沿つて設けた中空パイプで形成さ
れ、このため、従来の円形パイプで形成された操
作桿に比べ、その外径を細くしても十分な、剛
性、強度が得られるものである。
前記クラツチケース２ａは、第２図に詳細に示
すように、操作桿１の基端部に挿通して固着する
ための取付用ボス部１１を有し、この取付用ボス
部１１には、基端部にベアリング支持部１１ａを
設け、先端側に嵌合部１１ｂを設けており、ベア
リング支持部１１ａは断面が円形に形成され、ま
た、嵌合部１１ｂは操作桿１の凹溝１０に嵌合す
る突起を有している。そして、前記ベアリング支
持部１１ａにベアリング１２が嵌着されて伝動軸
５とクラツチのドラムのボス部とを連結した状態
でこの連結部を支承している。また、嵌合部１１
ｂにはスリツト１３が設けられ、締付ボルト１３
ａにより締付け固定するようになつている。な
お、図示しないが、ギヤボツクス３にも、上記ク
ラツチケース２ａと同様の取付用ボス部が設けら
れて操作桿１に取付けるようにしている。
前記スリツト１３の締付ボルト１３ａと対応す
る位置の操作桿１には、第３図ないし第５図に詳
細に示す環状溝１４が凹設されている。この環状
溝１４は、操作桿１の大径部内径d1より内側に凹
んで環状部内径d2を形成しているが、凹溝部内径
d3よりは大きい内径を有している。そして、この
環状溝１４に前記締付ボルト１３ａの外周の一部
が嵌入して締付けられて、クラツチケース２ａ
（エンジン２）およびギヤボツクス３（刈刃４）
が操作桿１に取付けられる。
操作桿１内には、伝動軸５を支承するための複
数の支承具１５が適当間隔に設けられる。この支
承具１５は、第６図ないし第９図に示すように、
伝動軸５を直接支承して潤滑性を有する円環状の
ブツシユ１６と、このブツシユ１６を内部に嵌
着、保持し、伝動軸５とは接触しない挿通孔１７
ａを有するゴムのような弾性体からなるブツシユ
ホルダ１７とにより構成されている。そして、ブ
ツシユホルダ１７の外形は、前記操作桿１に設け
た環状溝１４の環状部内径d2とほぼ同じでこの環
状部内径d2を通過可能の大径部d′2と、操作桿１
の凹溝１０の内周面に嵌合し、前記凹溝部内径d3
とほぼ同じ凹部外径d′3を有する凹部１８とを形
成し、操作桿１の両端から操作桿内に挿入して、
ブツシユ１６により駆動軸５を支承するようにな
つている。
このように構成された刈払機においては、操作
桿１が凹溝１０を設けた構成であるので、従来の
ものより外径を細くしても強度上問題がなく、こ
のため軽量化することができ、全体として軽量の
刈払機を構成できる。
また、クラツチケース２ａおよびギヤボツクス
３を、凹溝１０に嵌合させて締付ボルト１３ａを
環状溝１４に接して取付部分１３を締付けるの
で、その取付けが堅固で、しかも、従来より操作
桿１を細くしても、締付けによりつぶれることが
ない。
さらに、支承具１５は、環状溝１４内を通過し
て操作桿１の両端から挿入されて、操作桿１内の
任意の位置で、しかも操作桿１に孔をあけたりす
ることなく回り止めして支持されるので、その配
設位置を自由に選択して伝動軸５を所望の位置で
支承することができる。
An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a hollow operation stick, to which an engine 2 is attached to the base end via a clutch case 2a, and a cutting blade 4 is attached to the tip via a gear box 3. It is being A transmission shaft 5 shown in FIGS. 2, 6, and 7 is inserted and supported in the operating rod 1 between the clutch case 2a and the gearbox 3, and rotational power from the engine 2 is transmitted to the gearbox 3 and the cutting blade 4. It is now being transmitted to A grip 6 is attached to the operation stick 1 on the front side of the clutch case 2a.
A loop-shaped handle stick 7 is attached to the side near the tip of the engine 2, and a throttle lever 8 for controlling the rotation of the engine 2 is attached to this handle stick 7.
Further, a cutting blade cover 9 is attached to a portion of the operation stick 1 near the gear box 3. As shown in FIGS. 4, 5, and 7, the operating rod 1 has four concave grooves 10 equally spaced in the circumferential direction.
It is formed from a hollow pipe that runs along its length, and therefore, compared to the conventional operating stick formed from a circular pipe, it has sufficient rigidity and strength even if its outer diameter is made thinner. be. As shown in detail in FIG. 2, the clutch case 2a has a mounting boss 11 that is inserted into and fixed to the base end of the operation stick 1. A bearing support portion 11a is provided at the end, and a fitting portion 11b is provided at the tip side. It has matching protrusions. A bearing 12 is fitted into the bearing support portion 11a to support the connecting portion in a state where the transmission shaft 5 and the boss portion of the clutch drum are connected. In addition, the fitting part 11
A slit 13 is provided in b, and a tightening bolt 13
It is designed to be tightened and fixed by a. Although not shown, the gear box 3 is also provided with an attachment boss portion similar to the clutch case 2a, so that it can be attached to the operating rod 1. An annular groove 14, shown in detail in FIGS. 3 to 5, is formed in the operating rod 1 at a position corresponding to the tightening bolt 13a of the slit 13. This annular groove 14 is recessed inward from the inner diameter d 1 of the large diameter part of the operation stick 1 to form an annular part inner diameter d 2 .
It has a larger inner diameter than d3 . Then, a part of the outer periphery of the tightening bolt 13a is fitted into this annular groove 14 and tightened, and the clutch case 2a is tightened.
(engine 2) and gearbox 3 (mower blade 4)
is attached to the operation stick 1. Inside the operating rod 1, a plurality of supports 15 for supporting the transmission shaft 5 are provided at appropriate intervals. This support 15, as shown in FIGS. 6 to 9,
An annular bush 16 that directly supports the transmission shaft 5 and has lubricating properties, and an insertion hole 17 that fits and holds the bush 16 inside and does not come into contact with the transmission shaft 5.
The bush holder 17 is made of an elastic material such as rubber and has a diameter of 1. The outer shape of the bush holder 17 is approximately the same as the inner diameter d 2 of the annular groove 14 provided in the operating rod 1 and has a large diameter portion d' 2 that can pass through the inner diameter d 2 of the annular portion, and a large diameter portion d' 2 of the operating rod 1.
It fits into the inner circumferential surface of the groove 10, and the inner diameter d 3 of the groove
A recess 18 having a recess outer diameter d′ 3 that is approximately the same as that of the recess 18 is formed, and the recess 18 is inserted into the operation rod from both ends of the operation rod 1.
The bush 16 supports the drive shaft 5. In the brush cutter constructed in this way, since the operating rod 1 is constructed with the concave groove 10, there is no problem in terms of strength even if the outer diameter is made thinner than that of conventional ones, and therefore the weight can be reduced. This makes it possible to construct a lightweight brush cutter as a whole. In addition, since the clutch case 2a and the gearbox 3 are fitted into the groove 10 and the tightening bolt 13a is brought into contact with the annular groove 14 to tighten the mounting portion 13, the installation is more secure, and the operation stick 1 is more secure than before. Even if it is made thinner, it will not collapse due to tightening. Furthermore, the support 15 passes through the annular groove 14 and is inserted from both ends of the operating stick 1 to prevent rotation at any position within the operating stick 1 without making a hole in the operating stick 1. Since the transmission shaft 5 is supported at a desired position by freely selecting its arrangement position, the transmission shaft 5 can be supported at a desired position.
以上説明したように、本考案の刈払機における
伝動軸支承構造によれば、支承具は、操作桿の長
手方向に沿つた複数の凹溝に嵌合して周方向に回
動することがなく、特別の係止手段を設けること
なく操作桿内に任意に配設することができ、簡単
な構造でありながら確実な支承が行える。
また、操作桿は従来の円管状のものに比べ細く
しても十分な強度が得られるので、軽量化でき、
全体として軽量の刈払機を構成することが可能と
なる。
As explained above, according to the power transmission shaft support structure of the brush cutter of the present invention, the support fitting fits into the plurality of grooves along the longitudinal direction of the operation stick and does not rotate in the circumferential direction. , it can be arbitrarily disposed within the operating rod without providing any special locking means, and can provide reliable support despite its simple structure. In addition, the control stick can be made thinner than the conventional cylinder-shaped one and still have sufficient strength, making it lightweight.
It becomes possible to construct a lightweight brush cutter as a whole.
第１図は、刈払機全体の側面図、第２図は、ク
ラツチケース装着部分の断面側面図、第３図は、
操作桿のクラツチケース装着部分における断面側
面図、第４図は、第３図のＹ矢視による背面図、
第５図は、第３図のX1−X1線に沿う断面図、第
６図は、支承具挿通部分の断面側面図、第７図
は、第６図のX2−X2線に沿う断面図、第８図は、
支承具の正面図、第９図は、支承具の側面図、第
１０図は、第８図のX3−X3線に沿う断面図であ
る。
１……操作桿、２……エンジン、２ａ……クラ
ツチケース、３……ギヤボツクス、４……刈刃、
５……伝動軸、６……グリツプ、７……ハンドル
桿、８……スロツトルレバー、９……刈刃カバ
ー、１０……凹溝、１１……取付用ボス部、１１
ａ……ベアリング支持部、１１ｂ……嵌合部、１
２……ベアリング、１３……スリツト、１３ａ…
…締付ボルト、１４……凹部、１５……支承具、
１６……ブツシユ、１７……ブツシユホルダ、１
７ａ……挿通孔、１８……凹部。
Fig. 1 is a side view of the entire brush cutter, Fig. 2 is a cross-sectional side view of the part where the clutch case is attached, and Fig. 3 is a side view of the entire brush cutter.
4 is a cross-sectional side view of the clutch case attached part of the operation stick; FIG. 4 is a rear view taken in the direction of the Y arrow in FIG. 3;
Figure 5 is a sectional view taken along the line X 1 - The cross-sectional view along Fig. 8 is as follows.
FIG. 9 is a front view of the support, FIG. 9 is a side view of the support, and FIG. 10 is a sectional view taken along the line X 3 -X 3 of FIG. 8. 1...Operation stick, 2...Engine, 2a...Clutch case, 3...Gearbox, 4...Mower blade,
5... Transmission shaft, 6... Grip, 7... Handle stick, 8... Throttle lever, 9... Cutting blade cover, 10... Concave groove, 11... Mounting boss part, 11
a... Bearing support part, 11b... Fitting part, 1
2...Bearing, 13...Slit, 13a...
... Tightening bolt, 14 ... Recess, 15 ... Supporting tool,
16...button, 17...button holder, 1
7a...insertion hole, 18...recess.
Claims (1)
機を、先端部にギヤボツクスを介して刈刃をそれ
ぞれ装着し、操作桿内に挿通された伝動軸で原動
機の動力を刈刃へ伝達するよう構成した刈払機に
おいて、上記操作桿には、その長手方向に沿つて
複数条の凹溝を形成し、さらにその両端部には、
該凹溝より浅い抜け止め用の環状溝を凹設してク
ラツチケース並びにギヤボツクスを取付けるよう
にすると共に、上記伝動軸を操作桿内に支承する
支承具は、該操作桿に凹設した環状溝の内径を通
過し得る外形に成形され、かつその長手方向に沿
つて操作桿の凹溝に嵌入する凹部を形成し、操作
桿内に支承具を間隔をあけて複数個配設して伝動
軸を支承したことを特徴とする刈払機における伝
動軸支承構造。 A prime mover is attached to the base end of the operating rod via a clutch case, a cutting blade is attached to the tip via a gear box, and the power of the prime mover is transmitted to the cutting blade by a transmission shaft inserted into the operating rod. In the brush cutter, the operating rod has a plurality of concave grooves formed along its longitudinal direction, and further has grooves formed at both ends thereof.
A locking annular groove shallower than the concave groove is provided to mount the clutch case and gearbox, and a support for supporting the transmission shaft in the operating rod is provided with an annular groove recessed in the operating rod. The transmission shaft is formed to have an outer shape that can pass through the inner diameter of the control rod, and has a recess along its longitudinal direction that fits into the concave groove of the operating rod, and a plurality of supports are arranged at intervals within the operating rod. A power transmission shaft support structure for a brush cutter, characterized by supporting the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984148304U JPH0214341Y2 (en) | 1984-09-28 | 1984-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984148304U JPH0214341Y2 (en) | 1984-09-28 | 1984-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6164227U JPS6164227U (en) | 1986-05-01 |
| JPH0214341Y2 true JPH0214341Y2 (en) | 1990-04-19 |
Family
ID=30706520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984148304U Expired JPH0214341Y2 (en) | 1984-09-28 | 1984-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0214341Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005299696A (en) * | 2004-04-06 | 2005-10-27 | Taisei Kozai Kk | Rotation transmitting shaft |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5223927U (en) * | 1975-08-09 | 1977-02-19 | ||
| JPS6010352Y2 (en) * | 1980-04-04 | 1985-04-09 | 株式会社ニツカリ | Flexible tube connection device for backpack type brush cutters |
| JPS58141328U (en) * | 1982-03-19 | 1983-09-22 | 日立工機株式会社 | Brush cutter body attachment/detachment device |
-
1984
- 1984-09-28 JP JP1984148304U patent/JPH0214341Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6164227U (en) | 1986-05-01 |
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