JPS6143963B2 - - Google Patents
Info
- Publication number
- JPS6143963B2 JPS6143963B2 JP56053231A JP5323181A JPS6143963B2 JP S6143963 B2 JPS6143963 B2 JP S6143963B2 JP 56053231 A JP56053231 A JP 56053231A JP 5323181 A JP5323181 A JP 5323181A JP S6143963 B2 JPS6143963 B2 JP S6143963B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- bearing tube
- synthetic resin
- engine
- rib
- 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
- 229920003002 synthetic resin Polymers 0.000 description 14
- 239000000057 synthetic resin Substances 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Description
【発明の詳細な説明】
本発明は、エンジンの動力を回転刃に伝達して
草木等を刈り払うための刈払機に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a brush cutter that transmits engine power to a rotary blade to cut down vegetation and the like.
従来、この種の刈払機においては、回転刃を回
転自在に軸支する支持体とエンジンとを連結する
パイプは鉄，アルミニウム等の金属で製作されて
おり、内部の回転軸を軸支するための軸受管は
鉄，銅合金等の金属または合成樹脂によつて成形
され、パイプと軸受管とを支持するためには、合
成樹脂によつて製作された長さの短いスペーサを
軸受管の適宜位置に接着固定し、これをパイプに
圧入していた。しかるにこの方法では、強度上パ
イプの重量が大きくなり、材料がコスト高とな
り、製作，組み付けが厄介である等の欠点があつ
た。 Conventionally, in this type of brush cutter, the pipe that connects the engine to the support body that rotatably supports the rotary blade is made of metal such as iron or aluminum. The bearing tube is made of metal such as iron, copper alloy, or synthetic resin, and in order to support the pipe and the bearing tube, a short spacer made of synthetic resin is inserted into the bearing tube as appropriate. It was fixed in place with adhesive and then press-fitted into the pipe. However, this method has disadvantages such as increased weight of the pipe due to its strength, high cost of materials, and cumbersome manufacturing and assembly.
このため従来、合成樹脂製の軸受管の外周に放
射状のリブを軸方向に全長にわたつて連続して一
体に設けて合成樹脂の押し出し成形によつて製作
を容易とし、このリブ付の軸受管をパイプの内径
部に挿入することによつて組付を容易とするもの
があつたが、この場合には、パイプの内径部とリ
ブの外端部とが一体に固着されていないので、パ
イプと軸受管を合成樹脂等で同一材料で形成され
る場合には、パイプの湾曲による曲げモーメント
に対しては、断面の中立軸より離れた位置の、リ
ブの外端部とパイプの内径部との間で軸方向の滑
りを生じているので、全体の断面係数が小さくな
り補強としての効果が充分でなかつた。また、パ
イプをアルミ合金とし、軸受管を合成樹脂とした
場合には、リブを強度の低い合成樹脂で製作する
ことになり、補強として効果が充分でなかつた。 For this reason, in the past, radial ribs were continuously and integrally provided on the outer periphery of a synthetic resin bearing tube over the entire length in the axial direction, making it easy to manufacture by extrusion molding of synthetic resin. In some cases, assembly was facilitated by inserting the rib into the inner diameter of the pipe, but in this case, the inner diameter of the pipe and the outer end of the rib were not fixed together, so the pipe When the bearing tube and the bearing tube are made of the same material, such as synthetic resin, the bending moment due to the bending of the pipe is caused by the outer end of the rib and the inner diameter of the pipe at a position away from the neutral axis of the cross section. Since slippage occurred in the axial direction between the two, the overall section modulus became small and the reinforcing effect was not sufficient. Further, when the pipe is made of aluminum alloy and the bearing tube is made of synthetic resin, the ribs are made of synthetic resin with low strength, and the reinforcement effect is not sufficient.
したがつていずれにしても必要な強度を保持す
るために、材料の肉厚を大きくする必要があつ
て、重量軽減上不充分であつた。 Therefore, in any case, in order to maintain the necessary strength, it was necessary to increase the thickness of the material, which was insufficient in terms of weight reduction.
本発明は、パイプの内部に放射状のリブを軸方
向に連続して一体に形成して設けるとともに、こ
のリブの中心位置に回転軸を支持する軸受管を固
着して設けることによつて、断面の中立軸より離
れた位置の、リブ外端部とパイプの内径部との間
を一体に形成し、パイプの曲げモーメントに対し
てこの部分の滑りがないので全体の断面係数が大
きくなつてパイプ，軸受管が合成樹脂の場合に
は、強度が増加し、またパイプをアルミ合金，軸
受等が合成樹脂の場合にはリブを強度の大きいア
ルミ合金とすることができ、いずれにしても強度
が増加して、材料の軽減を計かることができるも
のであり、しかもパイプ軸受管を押し出し成形に
よつて製作することが可能であり、加工，組付が
容易で、安価に製作することができる刈払機を提
供しようとするものである。以下、図面を用いて
本発明の１実施例について詳細な説明を行なう。 In the present invention, radial ribs are continuously and integrally formed in the axial direction inside the pipe, and a bearing tube that supports the rotating shaft is fixedly provided at the center of the rib, so that the cross-sectional The outer end of the rib at a position away from the neutral axis of the pipe is integrally formed with the inner diameter of the pipe, and this part does not slip due to the bending moment of the pipe, so the overall section modulus is increased. , If the bearing tube is made of synthetic resin, the strength will increase, and if the pipe is made of aluminum alloy, and the bearing etc. is made of synthetic resin, the ribs can be made of aluminum alloy, which has high strength. In addition, the pipe bearing pipe can be manufactured by extrusion molding, making it easy to process and assemble, and can be manufactured at low cost. The company aims to provide a brush cutter. Hereinafter, one embodiment of the present invention will be described in detail using the drawings.
第１図〜第３図において、第１図は本発明の１
実施例の刈払機１の全体図である。３はエンジン
５と支持体７とを連結するためのパイプで合成樹
脂で製作されている。９は支持体７によつて回転
自在に支持された回転刃である。１１はパイプ３
に固定して刈払機１を支持するための握り部であ
る。１３はエンジン５内のスロツトルバルブ（図
示せず）を操作するためのスロツトルレバーで、
ワイヤー１５によつてエンジン５を連結されてい
る。１７はハンドルである。第２図，第３図にお
いて、１９，１９，…はパイプ３の内部に放射状
にかつ軸方向に連続して設けたリブで、パイプ３
と一体に合成樹脂で成形されている。また、リブ
１９，１９，…の中心位置には、耐熱，耐摩耗性
の合成樹脂で成形された軸受管２１が挿脱自在に
嵌合できる軸受管嵌合部２３が設けられている。
２５は軸受管２１に嵌合する回転軸である。 In FIGS. 1 to 3, FIG. 1 shows the first embodiment of the present invention.
FIG. 1 is an overall view of a brush cutter 1 according to an embodiment. 3 is a pipe for connecting the engine 5 and the support body 7, and is made of synthetic resin. Reference numeral 9 denotes a rotary blade rotatably supported by the support body 7. 11 is pipe 3
This is a grip part for supporting the brush cutter 1 by fixing it to the handle. 13 is a throttle lever for operating a throttle valve (not shown) in the engine 5;
The engine 5 is connected by a wire 15. 17 is a handle. In FIGS. 2 and 3, 19, 19, ... are ribs provided radially and continuously in the axial direction inside the pipe 3.
It is molded integrally with synthetic resin. Moreover, a bearing tube fitting part 23 is provided at the center of the ribs 19, 19, .
25 is a rotating shaft that fits into the bearing tube 21.
以上の構成において、回転軸２５をパイプ３の
内部に挿入するには、パイプ３の軸受管嵌合部２
３に軸受管２１を挿入して、さらに軸受管２１の
内部に回転軸２５を挿入する。 In the above configuration, in order to insert the rotating shaft 25 into the inside of the pipe 3, the bearing tube fitting part 2 of the pipe 3 is
3, and further insert the rotating shaft 25 into the bearing tube 21.
なお、パイプ，リブはアルミ合金で押し出し成
形してもよく、また、パイプ，リブ，軸受管を合
成樹脂の押し出し成形で一体に形成してもよい。 The pipes and ribs may be extruded from aluminum alloy, or the pipes, ribs, and bearing tube may be integrally formed by extrusion from synthetic resin.
第４〜第５図は従来の実施例を示すものであ
り、２７は鉄，アルミニウム等の金属で成形され
たパイプで、２９は鉄，銅合金等の金属または合
成樹脂で成形された軸受管である。パイプ２７の
内径に合成樹脂等で成形された円筒状のスペーサ
３１を接着等の方法によつて軸受管２９の適宜位
置に固定し、このスペーサ３１によつて軸受管２
９をパイプ３に支持している。なお、第４図〜第
５図においては、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。 Figures 4 and 5 show conventional embodiments, where 27 is a pipe made of metal such as iron or aluminum, and 29 is a bearing tube made of metal such as iron or copper alloy, or synthetic resin. It is. A cylindrical spacer 31 made of synthetic resin or the like is fixed to the inner diameter of the pipe 27 at an appropriate position on the bearing tube 29 by a method such as gluing.
9 is supported on the pipe 3. In FIGS. 4 to 5, the same reference numerals as those shown in FIGS. 1 to 3 represent the same components.
本発明は請求の範囲の記載のとおりの構成であ
るから、パイプの重量が軽量化され刈払作業の能
率を向上することができるとともに押し出し成形
によつて加工を容易とし、かつ組付が容易で、し
かもパイプは安価な強度の大きい材料を使用し、
軸受管のみ耐熱性，耐摩耗性の材料を使用すれ
ば、さらに安価に製作することができるものであ
る。 Since the present invention has the structure as described in the claims, the weight of the pipe can be reduced and the efficiency of mowing work can be improved, and it can be easily processed by extrusion molding and can be easily assembled. Moreover, the pipes are made of inexpensive and strong materials,
If only the bearing tube is made of heat-resistant and wear-resistant material, it can be manufactured at a lower cost.
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図は本発明の１実施例の斜視説明図、第２
図，第３図はそれぞれ要部の側面図、正面図、第
４図、第５図はそれぞれ従来の刈払機の要部の側
面図、正面図である。
（図面の主要な部分を表わす符号の説明）３…
パイプ、５…エンジン、７…支持体、９…回転
刃、１９…リブ、２１…軸受管、２５…回転軸。
FIG. 1 is a perspective explanatory view of one embodiment of the present invention, and FIG.
3 are a side view and a front view of the main parts, respectively, and FIGS. 4 and 5 are a side view and a front view, respectively, of the main parts of a conventional brush cutter. (Explanation of symbols representing main parts of the drawing) 3...
Pipe, 5... Engine, 7... Support body, 9... Rotating blade, 19... Rib, 21... Bearing tube, 25... Rotating shaft.
Claims (1)
ンジン５とを連結するパイプ３を設け、前記パイ
プ３の内部に前記エンジン５の動力を前記回転刃
９に伝達するための回転軸２５を設け、前記パイ
プ３の内部に放射状のリブ１９を軸方向に連続し
て一体に形成して設けるとともに前記リブ１９の
中心位置に前記回転軸２５を支持する軸受管２１
を固着して設けたことを特徴とする・刈払機。1 A pipe 3 is provided that connects the engine 5 with a support 7 that rotatably supports the rotary blade 9, and a rotary shaft 25 is provided inside the pipe 3 for transmitting the power of the engine 5 to the rotary blade 9. a bearing tube 21 which is provided with a radial rib 19 integrally formed continuously in the axial direction inside the pipe 3 and supports the rotating shaft 25 at the center position of the rib 19;
A brush cutter characterized by being fixedly provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56053231A JPS57170111A (en) | 1981-04-10 | 1981-04-10 | Pruning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56053231A JPS57170111A (en) | 1981-04-10 | 1981-04-10 | Pruning machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57170111A JPS57170111A (en) | 1982-10-20 |
| JPS6143963B2 true JPS6143963B2 (en) | 1986-09-30 |
Family
ID=12937040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56053231A Granted JPS57170111A (en) | 1981-04-10 | 1981-04-10 | Pruning machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57170111A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0321553U (en) * | 1989-07-11 | 1991-03-04 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6077326U (en) * | 1983-11-02 | 1985-05-30 | カ−ツ株式会社 | Brush cutter control stick |
| JPS60185424U (en) * | 1984-05-18 | 1985-12-09 | 株式会社 丸山製作所 | Brush cutter transmission shaft vibration isolator |
| JPS6112335U (en) * | 1984-06-28 | 1986-01-24 | 小松ゼノア株式会社 | Brush cutter connection pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56153133U (en) * | 1980-04-18 | 1981-11-16 |
-
1981
- 1981-04-10 JP JP56053231A patent/JPS57170111A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0321553U (en) * | 1989-07-11 | 1991-03-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57170111A (en) | 1982-10-20 |
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