JPH0345538Y2 - - Google Patents
Info
- Publication number
- JPH0345538Y2 JPH0345538Y2 JP1986014399U JP1439986U JPH0345538Y2 JP H0345538 Y2 JPH0345538 Y2 JP H0345538Y2 JP 1986014399 U JP1986014399 U JP 1986014399U JP 1439986 U JP1439986 U JP 1439986U JP H0345538 Y2 JPH0345538 Y2 JP H0345538Y2
- Authority
- JP
- Japan
- Prior art keywords
- outer pipe
- small
- main rod
- outer pipes
- diameter outer
- 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
- 230000004323 axial length Effects 0.000 claims description 5
- 239000011295 pitch Substances 0.000 description 4
- 244000025254 Cannabis sativa Species 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Harvester Elements (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
この考案は、両端部に回転式刈刃と駆動機をそ
れぞれ設けた主杆を分割して伸縮自在としてなる
刈払機に関するものである。[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a brush cutter that is made extendable and retractable by dividing the main rod, each of which has a rotary cutting blade and a drive unit at both ends.
［従来の技術］
一般に、この種の刈払機における主杆は長尺に
構成されているから、立ち姿勢で刈り払い作業を
行なう際の作業性が良い反面、不使用時や運搬時
に取り扱いづらい弊害がある。そのため、従来、
特開昭52−117725号公報に開示されているよう
に、上記主杆を分割して径小のアウタパイプを径
大のアウタパイプに軸方向および円周方向へ相対
移動可能に嵌合し、上記径大のアウタパイプの外
周に装着された締付部材で上記両アウタパイプを
固定して主杆の軸長を可変調整するように構成し
たものが知られている。[Prior Art] Generally, the main rod in this type of brush cutter is long, so it is easy to work when cutting grass in a standing position, but it is difficult to handle when not in use or when being transported. There is. Therefore, conventionally,
As disclosed in Japanese Unexamined Patent Publication No. 52-117725, the main rod is divided and a smaller diameter outer pipe is fitted to a larger diameter outer pipe so as to be movable relative to each other in the axial and circumferential directions. It is known that the two outer pipes are fixed by a tightening member attached to the outer periphery of a large outer pipe, and the axial length of the main rod is variably adjusted.
［考案が解決しようとする課題］
ところが、上記構成によれば、分割して嵌合さ
れた径小のアウタパイプと径大のアウタパイプと
の軸方向および円周方向への位置決め手段がない
ため、駆動機の動力にもとづく振動や作業者の不
用意な準備操作で締付部材の締付力がわずかでも
緩むと、両アウタパイプの結合が解かれて動力の
伝達が解除されるおそれがあり、また、この結合
が一旦解除されると、上記両アウタパイプの中空
軸部に挿通されて分割された駆動軸の結合も解除
されるから、これらを再度組み立てることが面倒
である。[Problem to be solved by the invention] However, according to the above configuration, there is no means for positioning the small diameter outer pipe and the large diameter outer pipe that are fitted separately in the axial direction and the circumferential direction, so that the drive If the tightening force of the tightening member loosens even slightly due to vibrations caused by the power of the machine or careless preparatory operations by the operator, there is a risk that the connection between the two outer pipes will come undone and the transmission of power will be canceled. Once this connection is released, the connection between the divided drive shafts inserted through the hollow shaft portions of both outer pipes is also released, and it is troublesome to reassemble them.
また、従来、実開昭59−179524号公報に開示さ
れているように、筒状連結具の両端開口部から分
割された主杆の両アウタパイプの端部を付き合せ
て嵌合し、上記筒状連結具の外壁に径方向へねじ
込まれたねじ体の先端部を両アウタパイプの外壁
に形成された環状溝に係止させ、上記両アウタパ
イプの結合が容易に解除されないように構成した
ものが知られている。 Conventionally, as disclosed in Japanese Utility Model Application Publication No. 59-179524, the ends of both outer pipes of the main rod divided from the openings at both ends of the cylindrical connector are aligned and fitted together, and the It is known that the tip of a screw body screwed into the outer wall of the shaped connector in the radial direction is locked in an annular groove formed in the outer walls of both outer pipes, so that the connection between the two outer pipes is not easily released. It is being
ところが、上記構成によれば、不使用時や運搬
のたびごとに、筒状連結具の開口部から分割され
た一方のアウタパイプを抜き取らなければならな
いから、その分解作業や、その分解後における刈
払機の取り扱いが面倒である。 However, according to the above configuration, one of the split outer pipes must be removed from the opening of the cylindrical connector when not in use or each time it is transported, which makes it difficult to disassemble the pipe or remove the bush cutter after disassembly. It is troublesome to handle.
この考案は上記課題を改善するためになされた
もので、分割して嵌合された両アウタパイプの結
合が容易に解除されるおそれがなく、また、上記
両アウタパイプの円周方向および軸方向位置を容
易に感知することができ、作業者の作業環境に適
合した軸長と、回転式刈刃の設定角度に調整する
ことができる刈払機を提供することを目的とす
る。 This invention was made in order to improve the above problem, and there is no fear that the connection between the two outer pipes that are fitted separately will be easily released, and the circumferential and axial positions of the two outer pipes are To provide a brush cutter that can be easily sensed and adjusted to have an axial length and a set angle of a rotary cutting blade that suit the working environment of a worker.
［課題を解決するための手段］
この考案による刈払機は、一端部に駆動機を、
他端部に回転式刈刃をそれぞれ設けた主杆が径大
のアウタパイプに径小のアウタパイプを軸方向お
よび円周方向へ相対移動可能に嵌合し、上記両ア
ウタパイプの嵌合面に環状の小球保持器を同心状
に嵌合し、この小球保持器に円周方向へ所定間隔
を存して複数個の小球を保持させ、これら各小球
が係止される係止凹部を上記両アウタパイプの一
方に形成するとともに、上記各小球が係脱可能に
間欠的に係合される複数条の係合凹部を上記両ア
ウタパイプの他方に円周方向および軸方向へ所定
間隔を存して形成し、上記各小球に対応させて上
記径大のアウタパイプの外周に締付部材からなる
継手を外嵌したことを特徴とする。[Means for solving the problem] The brush cutter according to this invention has a driving machine at one end,
A main rod, each having a rotary cutting blade at the other end, fits a small-diameter outer pipe into a large-diameter outer pipe so as to be able to move relative to each other in the axial and circumferential directions. A small ball holder is fitted concentrically, a plurality of small balls are held in the small ball holder at a predetermined interval in the circumferential direction, and a locking recess in which each of the small balls is locked is provided. A plurality of engagement recesses are formed in one of the two outer pipes, and a plurality of engagement recesses are formed in the other of the two outer pipes at predetermined intervals in the circumferential direction and the axial direction, with which each of the small balls is intermittently engaged in a detachable manner. It is characterized in that a joint made of a tightening member is fitted around the outer periphery of the large-diameter outer pipe in correspondence with each of the small balls.
［作用］
上記構成によれば、分割して嵌合された径小の
アウタパイプと径大のアウタパイプとの軸方向お
よび円周方向への位置決めが、小球保持器に保持
された小球と、上記両アウタパイプに形成されて
これら各小球が係止される係止凹部および複数条
の係合凹部で達成されるから、上記駆動機の動力
にもとづく振動や作業者の準備操作で締付部材か
らなる継手の締付力がわずかに緩んだ場合でも、
両アウタパイプの結合が解かれて動力の伝達が解
除されるおそれが少ない。[Function] According to the above configuration, positioning of the small diameter outer pipe and the large diameter outer pipe that are divided and fitted together in the axial direction and the circumferential direction is performed by the small balls held in the small ball holder, This is achieved by the locking recesses formed in both the outer pipes to which the small balls are locked, and the plurality of engagement recesses. Even if the tightening force of the joint made of
There is little possibility that the connection between both outer pipes will be broken and power transmission will be canceled.
また、上記両アウタパイプを軸方向および円周
方向へ相対移動させた際、小球保持器に保持され
た状態で上記各小球が複数条の係合凹部に間欠的
に係脱可能に係合されて位置決めされるから、そ
の係合音や係合時の感触で上記両アウタパイプの
円周方向および軸方向位置を容易に感知すること
ができる。 Furthermore, when the two outer pipes are moved relative to each other in the axial and circumferential directions, each of the small balls is intermittently and removably engaged with the plural engagement recesses while being held in the small ball holder. Since the outer pipes are positioned by the outer pipes, the positions of the two outer pipes in the circumferential direction and the axial direction can be easily sensed by the sound of engagement and the feel of engagement.
以下、この考案の実施例を図面にしたがつて説
明する。
Embodiments of this invention will be described below with reference to the drawings.
この考案の第１の実施例を示す第１図におい
て、１は主杆、２は回転式刈刃、３は駆動機であ
るエンジン、４はハンドルである。主杆１は径大
のアウタパイプ５と、径小のアウタパイプ６と、
両アウタパイプ５，６を固定する継手７と、後述
する位置決め手段（図示せず）とからなる。上記
径大のアウタパイプ５には、主杆１の一端側にク
ラツチハウジング８を介して、エンジン３が固定
され、径小のアウタパイプ６との接合側にハンド
ルブラケツト９を介してハンドル４が固定されて
いる。一方、径小のアウタパイプ６は、径大のア
ウタパイプ５に、軸方向および円周方向に相対移
動可能に嵌め込まれ、上記主杆１の他端側にギヤ
ボツクス１０が固定されている。このギヤボツク
ス１０に収納されたベベルギヤ（図示せず）に
は、回転式刈刃２が連結されている。なお、１１
はエンジン３の燃料タンクである。 In FIG. 1 showing the first embodiment of this invention, 1 is a main rod, 2 is a rotary cutting blade, 3 is an engine as a driving machine, and 4 is a handle. The main rod 1 has a large diameter outer pipe 5, a small diameter outer pipe 6,
It consists of a joint 7 for fixing both outer pipes 5 and 6, and positioning means (not shown) to be described later. An engine 3 is fixed to one end of the main rod 1 via a clutch housing 8 to the large diameter outer pipe 5, and a handle 4 is fixed to the side where it joins the small diameter outer pipe 6 via a handle bracket 9. ing. On the other hand, the smaller diameter outer pipe 6 is fitted into the larger diameter outer pipe 5 so as to be relatively movable in the axial and circumferential directions, and a gear box 10 is fixed to the other end of the main rod 1. A rotary cutting blade 2 is connected to a bevel gear (not shown) housed in the gear box 10. In addition, 11
is the fuel tank of engine 3.
この考案の要部を示す第２図において、１２は
位置決め手段で、両アウタパイプ５，６に穿設さ
れた小孔５ａ，６ａと、これらの小孔５ａおよび
小孔６ａに嵌着された小球１２ａとが、第３図の
ように、円周方向に一定の角度θおよび2θで多数
設けられてなり、両アウタパイプ５，６の円周方
向の相対位置を決めるものである。なお、１３は
小球１２ａの保持器で、第２図の径大のアウタパ
イプ５の端部に螺着されている。 In FIG. 2 showing the main part of this invention, numeral 12 denotes positioning means, which includes small holes 5a and 6a bored in both outer pipes 5 and 6, and small holes fitted in these small holes 5a and 6a. As shown in FIG. 3, a large number of balls 12a are provided at constant angles θ and 2θ in the circumferential direction, and determine the relative positions of the outer pipes 5 and 6 in the circumferential direction. Note that 13 is a holder for the small balls 12a, which is screwed onto the end of the large diameter outer pipe 5 shown in FIG.
第３図の継手７は、径大のアウタパイプ５の外
側に装着されたバンド７ａと、このバンド７ａを
締め付ける雄ねじ７ｂとからなる。この継手７
は、径大のアウタパイプ５の端面５ｂ（第２図参
照）から軸方向に向つて設けられた切欠部５ｃを
利用して、径大のアウタパイプ５を、小球１２ａ
を介して径小のアウタパイプ６に対して、バンド
７ａで締め付けることによつて、両アウタパイプ
５，６を固定している。 The joint 7 shown in FIG. 3 consists of a band 7a attached to the outside of the large-diameter outer pipe 5, and a male screw 7b that tightens the band 7a. This joint 7
In this method, the large-diameter outer pipe 5 is connected to the small sphere 12a by using the notch 5c provided in the axial direction from the end surface 5b (see FIG. 2) of the large-diameter outer pipe 5.
Both outer pipes 5 and 6 are fixed by tightening the band 7a to the smaller diameter outer pipe 6 through the band 7a.
第２図において、１５は駆動軸で、径大のアウ
タパイプ５に挿通されるとともに、径小のアウタ
パイプ６に挿通された中空の駆動軸１６内に挿通
自在である。中空の駆動軸１６および駆動軸１５
は、それぞれその端部に、係合部１６ａおよび被
係合部１５ａが設けられ、たとえばスプライン結
合されている。つまり、係合部１６ａおよび被係
合部１５ａは、上記駆動軸１５，１６の回転方向
に互いに係合することによつて、駆動軸１５の回
転力を中空の駆動軸１６に伝達する。中空の駆動
軸１６は、一端が軸受１７によつて支持されると
ともに、他端（図示せず）が第１図のギヤボツク
ス１０の近傍で同様に支持され、上記ベベルギヤ
を介して回転式刈刃２に連結されている。一方、
第２図の駆動軸１５は、一端が中空の駆動軸１６
によつて支持されるとともに、他端（図示せず）
が第１図のクラツチハウジング８の近傍で軸受
（図示せず）に支持され、クラツチ（図示せず）
などを介してエンジン３の出力軸（図示せず）に
連結されている。 In FIG. 2, reference numeral 15 denotes a drive shaft, which is inserted through the outer pipe 5 having a large diameter and can be freely inserted into a hollow drive shaft 16 which is inserted through an outer pipe 6 having a small diameter. Hollow drive shaft 16 and drive shaft 15
are provided with an engaging portion 16a and an engaged portion 15a at their respective ends, and are connected, for example, by spline connection. That is, the engaging portion 16a and the engaged portion 15a transmit the rotational force of the drive shaft 15 to the hollow drive shaft 16 by engaging with each other in the rotation direction of the drive shafts 15 and 16. The hollow drive shaft 16 has one end supported by a bearing 17, and the other end (not shown) similarly supported near the gear box 10 in FIG. It is connected to 2. on the other hand,
The drive shaft 15 in FIG. 2 is a drive shaft 16 whose one end is hollow.
and the other end (not shown)
is supported by a bearing (not shown) near the clutch housing 8 in FIG.
It is connected to the output shaft (not shown) of the engine 3 via the like.
上記構成において、主杆１は、第２図の径小の
アウタパイプ６が径大のアウタパイプ５に対し
て、軸方向に相対移動可能に嵌め込まれているか
ら、継手７を緩め、径小のアウタパイプ６を矢印
Ａ方向に移動させて、縮めることができる。一
方、駆動軸１５，１６は、同様に駆動軸１５が中
空の駆動軸１６に挿通自在であるから、縮めるこ
とができる。したがつて、刈払作業を容易とする
ために、第１図のように、長く設定された刈払機
を、第４図のように、短く縮めることができるか
ら、収納・運搬時に必要なスペースが小さく、し
かも持ち運び易い。 In the above configuration, the main rod 1 is fitted so that the small diameter outer pipe 6 shown in FIG. 2 is movable relative to the large diameter outer pipe 5 in the axial direction. 6 can be moved in the direction of arrow A to shrink it. On the other hand, the drive shafts 15 and 16 can be similarly shortened because the drive shaft 15 can be freely inserted into the hollow drive shaft 16. Therefore, in order to make grass cutting work easier, the long brush cutter shown in Figure 1 can be shortened to a shorter length as shown in Figure 4, reducing the space required for storage and transportation. is small and easy to carry.
また、第３図の両アウタパイプ５，６が円周方
向に、つまり矢印Ｂ方向に相対移動可能であるか
ら継手７を緩め、第１図の回転式刈刃２を径大の
アウタパイプ５に対して、つまりハンドル４に対
して矢印Ｃ方向に回転させることができる。ま
た、上記のように軸方向に伸縮できる。したがつ
て、傾斜面における刈払作業時にも、ハンドル４
を傾むけて持つことなく、回転式刈刃２を傾斜面
の角度に合せ易いから、その刈払作業が容易なも
のとなる。 In addition, since the outer pipes 5 and 6 shown in FIG. 3 are movable relative to each other in the circumferential direction, that is, in the direction of arrow B, the joint 7 is loosened, and the rotary cutting blade 2 shown in FIG. In other words, the handle 4 can be rotated in the direction of arrow C. Furthermore, it can be expanded and contracted in the axial direction as described above. Therefore, even when cutting grass on a slope, the handle 4
Since the rotary cutting blade 2 can be easily adjusted to the angle of the inclined surface without having to hold it at an angle, the mowing work becomes easy.
また、上記のように、主杆１の円周方向におけ
るハンドル４と回転式刈刃２との相対位置を調節
可能としたため、平地における両者２，４の相対
位置は、これを目視で調節した場合、多少ずれる
おそれがある。これに対し、この考案は、第３図
の円周方向の位置決め手段１２が設けられている
ので、上記相対位置を容易に定めることができ、
したがつて、平地における刈払作業に支障を来た
すおそれがない。なお、位置決め手段１２は、両
アウタパイプ５，６が直接圧接するようにして、
両アウタパイプ５，６の連結端部に設けたマーク
としても良い。なお、この場合には、両アウタパ
イプ５，６の上記圧接面を粗くして、その摩擦係
数を大きくしても良い。 Furthermore, as mentioned above, since the relative position between the handle 4 and the rotary cutting blade 2 in the circumferential direction of the main rod 1 can be adjusted, the relative position of both 2 and 4 on level ground can be adjusted visually. In this case, there may be a slight deviation. In contrast, this invention is provided with the positioning means 12 in the circumferential direction shown in FIG. 3, so that the relative position can be easily determined.
Therefore, there is no risk of hindrance to mowing work on level ground. Note that the positioning means 12 is arranged so that both outer pipes 5 and 6 are in direct pressure contact with each other,
It may also be a mark provided at the connecting end of both outer pipes 5 and 6. In this case, the pressure contact surfaces of both outer pipes 5 and 6 may be roughened to increase the friction coefficient.
ところで、第１図のハンドル４は、燃料タンク
１１などが設けられて比較的重いエンジン３側と
比較的軽い回転式刈刃２側とのモーメントが釣り
合うようにするために、主杆１のエンジン３寄り
に設けられている。ここで、この実施例は、ハン
ドル４の固定されるエンジン３側の主杆１が径大
のアウタパイプ５とされているから、径小のアウ
タパイプ６が径大のアウタパイプ５内に挿通する
際に、上記ハンドル４が邪魔にならない。 By the way, the handle 4 shown in FIG. 1 is designed to handle the engine of the main rod 1 in order to balance the moments between the relatively heavy engine 3 side, which is provided with a fuel tank 11, etc., and the relatively light rotary cutting blade 2 side. It is located near 3. Here, in this embodiment, since the main rod 1 on the engine 3 side to which the handle 4 is fixed is the outer pipe 5 with a large diameter, when the outer pipe 6 with a small diameter is inserted into the outer pipe 5 with a large diameter, , the handle 4 does not get in the way.
この考案の第２の実施例を示す第５図におい
て、径大のアウタパイプ５の端部には、テーパ雄
ねじ５ｄが設けられ、テーパ雌ねじ７ｃの設けら
れたユニオンナツトからなる継手７が螺着してい
る。上記径大のアウタパイプ５には、第１の実施
例と同様な第６図の切欠部５ｃが設けられてい
る。第７図の径小のアウタパイプ６には、その円
周方向に一定角度で多数穿設された小孔６aa，
６ab，６ac，６adが、軸方向にもピツチＰごと
に穿設されるとともに、作業者の身長表示Ｌおよ
びこの身長表示Ｌに対応する目盛１８ａ，１８
ｂ，１８ｃ，１８ｄが表面にピツチＰごとに刻設
されている。一方、第５図の駆動軸１５の被係合
部１５ａは、回転力を伝達するのに必要な長さよ
りも第７図の３ピツチＰだけ長く設定されてい
る。その他の構成は、第１図の実施例と同様であ
り、同一物もしくは相当部分に同一符号を付し
て、その詳しい説明は省略する。 In FIG. 5 showing a second embodiment of this invention, a tapered male thread 5d is provided at the end of a large diameter outer pipe 5, and a coupling 7 made of a union nut provided with a tapered female thread 7c is screwed into the end. ing. The large diameter outer pipe 5 is provided with a notch 5c shown in FIG. 6 similar to the first embodiment. The small diameter outer pipe 6 shown in FIG.
6ab, 6ac, and 6ad are drilled in the axial direction at each pitch P, and the worker's height display L and scales 18a and 18 corresponding to this height display L are also provided.
b, 18c, and 18d are carved on the surface for each pitch P. On the other hand, the engaged portion 15a of the drive shaft 15 shown in FIG. 5 is set to be longer by 3 pitches P in FIG. 7 than the length required to transmit rotational force. The rest of the structure is the same as that of the embodiment shown in FIG. 1, and the same parts or corresponding parts are denoted by the same reference numerals, and detailed explanation thereof will be omitted.
上記構成において、この実施例は、第５図の駆
動軸１５の被係合部１５ａが長く設定されている
ので、主杆１の長さを第７図の３ピツチＰだけ変
えた状態においても、第５図の駆動軸１５，１６
が係合する。したがつて、主杆１の長さを作業者
の身長に合せて、調節できるから、作業性が向上
する。また、第７図の目盛１８ａ，１８ｂ，１８
ｃ，１８ｄを設けたので、上記調節が容易であ
る。 In the above configuration, in this embodiment, the engaged portion 15a of the drive shaft 15 in FIG. 5 is set long, so even if the length of the main rod 1 is changed by 3 pitches P in FIG. , drive shafts 15, 16 in FIG.
is engaged. Therefore, the length of the main rod 1 can be adjusted according to the height of the worker, improving work efficiency. Also, scales 18a, 18b, 18 in FIG.
c and 18d, the above adjustment is easy.
なお、上記実施例において、上記両アウタパイ
プ５，６の軸方向および円周方向における位置決
め手段１２が複数の小球１２ａと、その保持器１
３と、上記各小球１２ａが係合される小孔５ａお
よび６ａとから構成されていたけれども、これら
の小孔５ａ，６ａに代えて、上記各小球１２ａが
係合されるものであれば他の凹部であつてもよい
ことはいうまでもない。 In the above embodiment, the positioning means 12 in the axial and circumferential directions of both the outer pipes 5 and 6 includes a plurality of small balls 12a and the retainer 1 thereof.
3, and small holes 5a and 6a in which each of the small balls 12a is engaged, but the small balls 12a may be engaged in place of these small holes 5a and 6a. Needless to say, other recesses may be used.
［考案の効果］
以上詳述したように、この考案によれば、分割
して嵌合された径小のアウタパイプと径大のアウ
タパイプとの軸方向および円周方向への位置決め
が、小球保持器に保持された小球と、上記両アウ
タパイプに形成されてこれら各小球が係止される
係止凹部および複数条の係合凹部で達成されるか
ら、駆動機の動力にもとづく振動や作業者の準備
操作で締付部材の締付力がわずかに緩んだ場合で
も、両アウタパイプの結合が解かれて動力の伝達
が解除されるおそれが少なく、刈り払い作業中に
おける刈払機が取り扱いやすい。[Effects of the invention] As detailed above, according to this invention, the positioning in the axial and circumferential directions of the small diameter outer pipe and the large diameter outer pipe that are fitted separately can be performed to hold the small balls. This is achieved by the small balls held in the container, the locking recesses formed in the two outer pipes in which each of these small balls are locked, and the plurality of engagement recesses, so that vibrations and work caused by the power of the drive machine are avoided. Even if the tightening force of the tightening member is slightly loosened due to a preparatory operation by a person, there is little risk that the connection between the two outer pipes will be broken and power transmission will be released, making it easier to handle the brush cutter during cutting work.
また、上記両アウタパイプを軸方向および円周
方向へ相対移動させた際、小球保持器に保持され
た状態で上記各小球が複数条の係合凹部に間欠的
に係脱可能に係合されるから、その係合音や係合
時の感触で上記両アウタパイプの円周方向および
軸方向位置を容易に感知することができ、作業者
の作業環境に適合した軸長と、回転式刈刃の設定
角度に調整することができる。しかも、その調整
作業は各小球の転動で達成されるから、上記主杆
の軸長と回転式刈刃の設定角度を軽快に達成する
ことができる。 Furthermore, when the two outer pipes are moved relative to each other in the axial and circumferential directions, each of the small balls is intermittently and removably engaged with the plural engagement recesses while being held in the small ball holder. Therefore, the circumferential and axial positions of the two outer pipes can be easily detected by the sound of engagement and the feel of engagement. The blade can be adjusted to the set angle. Moreover, since the adjustment work is accomplished by the rolling of each small ball, the axial length of the main rod and the set angle of the rotary cutting blade can be easily achieved.
さらに、不使用時や運搬時に締付部材の締付力
を緩めて径小のアウタパイプを径大のアウタパイ
プに対して軸方向へ押し込めば、その軸長を短縮
させることができるから、小形コンパクト化され
てその収納スペースが小さく、また、運搬作業が
きわめて容易である。 Furthermore, when not in use or during transportation, by loosening the clamping force of the clamping member and pushing the smaller diameter outer pipe in the axial direction against the larger diameter outer pipe, the axial length can be shortened, making it more compact. The storage space is small, and transportation is extremely easy.
第１図はこの考案の第１の実施例を示す斜視
図、第２図は要部の縦断面図、第３図は同横断面
図、第４図は縮めた状態における刈払機の斜視
図、第５図は第２の実施例の要部を示す縦断面
図、第６図は径大のアウタパイプの側面図、第７
図は径小のアウタパイプの側面図である。
１……主杆、２……回転式刈刃、３……駆動機
（エンジン）、５……径大のアウタパイプ、５ａ…
…係止凹部（小孔）、６……径小のアウタパイプ、
６ａ……係合凹部（小孔）、１２……位置決め手
段、１２ａ……小球、１３……小球保持器、１５
……駆動軸、１５ａ……被係合部、１６……中空
の駆動軸、１６ａ……係合部。
Fig. 1 is a perspective view showing the first embodiment of this invention, Fig. 2 is a vertical cross-sectional view of the main parts, Fig. 3 is a cross-sectional view of the same, and Fig. 4 is a perspective view of the brush cutter in a retracted state. , FIG. 5 is a vertical sectional view showing the main part of the second embodiment, FIG. 6 is a side view of the large diameter outer pipe, and FIG.
The figure is a side view of a small diameter outer pipe. 1... Main rod, 2... Rotating cutting blade, 3... Drive machine (engine), 5... Large diameter outer pipe, 5a...
...Locking recess (small hole), 6...Small diameter outer pipe,
6a... Engaging recess (small hole), 12... Positioning means, 12a... Small ball, 13... Small ball holder, 15
...Drive shaft, 15a...Engaged portion, 16...Hollow drive shaft, 16a...Engaging portion.
Claims (1)
方向および円周方向へ相対移動可能に嵌合してな
る主杆の一端部に駆動機を、他端部に回転式刈刃
をそれぞれ設けるとともに、上記主杆の内部に挿
通されて上記駆動機の動力を上記回転式刈刃に伝
達する駆動軸を分割し、この分割された一方の駆
動軸を他方の駆動軸に軸方向へ相対移動可能で円
周方向へ相対移動不能に嵌合し、上記径大のアウ
タパイプの外周に装着された締付部材で上記両ア
ウタパイプを固定して主杆の軸長を可変調整する
刈払機において、上記両アウタパイプの嵌合面に
同心状に嵌合された環状の小球保持器と、この小
球保持器に円周方向へ所定間隔を存して保持され
た複数個の小球と、上記両アウタパイプの一方に
形成されて上記各小球が係止される係止凹部と、
上記両アウタパイプの他方に円周方向および軸方
向へ所定間隔を存して形成されて上記各小球が係
脱可能に間欠的に係合される複数条の係合凹部
と、上記各小球に対応させて上記径大のアウタパ
イプの外周に外嵌された締付部材からなる継手と
を具備したことを特徴とする刈払機。 A main rod is formed by fitting a small-diameter outer pipe into a large-diameter outer pipe so as to be able to move relative to each other in the axial and circumferential directions. The drive shaft that is inserted into the main rod and transmits the power of the drive machine to the rotary cutting blade is divided, and one of the divided drive shafts is movable in the axial direction relative to the other drive shaft, and is circular. In a brush cutter in which the axial length of the main rod is variably adjusted by fixing the two outer pipes with a tightening member attached to the outer periphery of the large-diameter outer pipe, the two outer pipes are fitted so that they cannot move relative to each other in the circumferential direction. An annular small ball holder fitted concentrically to a fitting surface, a plurality of small balls held in the small ball holder at predetermined intervals in the circumferential direction, and one of the two outer pipes. a locking recess formed in which each of the small balls is locked;
a plurality of engagement recesses formed at predetermined intervals in the circumferential direction and axial direction on the other of the two outer pipes, and in which each of the small balls is intermittently engaged in a detachable manner; A bush cutter comprising: a joint made of a tightening member fitted around the outer periphery of the large diameter outer pipe in accordance with the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986014399U JPH0345538Y2 (en) | 1986-02-03 | 1986-02-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986014399U JPH0345538Y2 (en) | 1986-02-03 | 1986-02-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62128718U JPS62128718U (en) | 1987-08-14 |
| JPH0345538Y2 true JPH0345538Y2 (en) | 1991-09-26 |
Family
ID=30804351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986014399U Expired JPH0345538Y2 (en) | 1986-02-03 | 1986-02-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0345538Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106900386A (en) * | 2017-03-10 | 2017-06-30 | 永嘉县真山园林工程有限公司 | A kind of municipal gardens clipping device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH056732Y2 (en) * | 1987-07-17 | 1993-02-22 | ||
| JPH01243923A (en) * | 1988-03-23 | 1989-09-28 | Kioritz Corp | Working machine |
| JP2009082028A (en) * | 2007-09-28 | 2009-04-23 | Taisei Monac Co Ltd | Working machine |
| JP5598224B2 (en) * | 2010-09-30 | 2014-10-01 | 日立工機株式会社 | Portable work machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52117725A (en) * | 1976-03-19 | 1977-10-03 | Kaaz Machinery | Transmission mechanism for bush cleaner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179524U (en) * | 1983-05-20 | 1984-11-30 | 小松ゼノア株式会社 | brush cutter |
-
1986
- 1986-02-03 JP JP1986014399U patent/JPH0345538Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52117725A (en) * | 1976-03-19 | 1977-10-03 | Kaaz Machinery | Transmission mechanism for bush cleaner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106900386A (en) * | 2017-03-10 | 2017-06-30 | 永嘉县真山园林工程有限公司 | A kind of municipal gardens clipping device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62128718U (en) | 1987-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102239031B (en) | Disc-shaped torque transducer | |
| JPS63169206A (en) | Spindle adapter for tool holder | |
| US4807499A (en) | Socket drive and socket with stable universal coupling | |
| JPH02138513A (en) | Bending drive | |
| JPH0345538Y2 (en) | ||
| JP2537483Y2 (en) | Brush cutter | |
| EP1007277B1 (en) | Rotary power tool with an extended output shaft | |
| JP4223145B2 (en) | Cylinder | |
| JP2002253024A (en) | Bush cutter | |
| JPH08197437A (en) | Bolt-nut fastening tool | |
| JPS606047Y2 (en) | Cable reel shaft support device | |
| JP2008008389A (en) | Universal rotary joint | |
| JPH0216584Y2 (en) | ||
| KR102155893B1 (en) | Jig for assembling ball bearing of CV joint | |
| JP3037377U (en) | Adhesive cover for preventing weeding in a brush cutter | |
| JPH0561518U (en) | Trinob type universal joint | |
| JPH0340086Y2 (en) | ||
| JPH0538578Y2 (en) | ||
| JPH0214341Y2 (en) | ||
| JPH056732Y2 (en) | ||
| US20020109308A1 (en) | Rotary tool adapter | |
| US4437709A (en) | Yoke apparatus | |
| JPH0226264Y2 (en) | ||
| JPH0321931Y2 (en) | ||
| JP2000354935A (en) | Dustproof cover for drilling tool |