JP3037377U - Adhesive cover for preventing weeding in a brush cutter - Google Patents
Adhesive cover for preventing weeding in a brush cutterInfo
- Publication number
- JP3037377U JP3037377U JP1996011120U JP1112096U JP3037377U JP 3037377 U JP3037377 U JP 3037377U JP 1996011120 U JP1996011120 U JP 1996011120U JP 1112096 U JP1112096 U JP 1112096U JP 3037377 U JP3037377 U JP 3037377U
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- Prior art keywords
- cover
- gear box
- gear
- grass
- passive
- 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.)
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Abstract
(57)【要約】
【課題】 本考案は刈払機における草巻き付き防止用被
着カバーに関し、刈り採られる草の巻付きを防止して原
動機に負荷が加わったり、回転刃の回転の停止を防止
し、草刈作業が中断されることなく短時間に効率的に作
業が行え、ギヤボックスへの取付位置の位置決めを容易
且つ確実に行おうとする。
【解決手段】 駆動ギヤ５と受動ギヤ７とを収容するギ
ヤボックス６の口部６ａが突出される開口部１４ａを外
周一側に設けたカバー本体１４をギヤボックスに被嵌
し、カバー本体の内側上方と左右に設けた第１規制面部
１５と第２規制面部１６とをギヤボックスの上下および
左右に当接して取付位置の位置決めを行う。
(57) [PROBLEMS] The present invention relates to an adherend cover for preventing grass wrapping in a brush cutter, which prevents wrapping of grass to be mowed to prevent a load from being applied to a prime mover and stop of rotation of a rotary blade. However, the mowing work can be efficiently performed in a short time without being interrupted, and the mounting position of the gear box can be easily and surely positioned. SOLUTION: A cover main body 14 having an opening 14a on one side of an outer periphery from which an opening 6a of a gear box 6 for accommodating a drive gear 5 and a passive gear 7 is projected is fitted into the gear box to cover the cover main body. The first regulating surface portion 15 and the second regulating surface portion 16 provided on the upper inside and the left and right sides are brought into contact with the upper and lower sides and the left and right sides of the gear box to position the mounting position.
Description
【０００１】[0001]
本考案は刈払機における草巻付き防止用被着カバーに関し、原動機の駆動力を 受動して回転刃に伝達するための駆動ギヤと受動ギヤを収納するギヤボックスに 被冠して刈払時の草の巻付きを防止し、ギヤボックスに対する位置決めを容易に して簡単且つ確実に取付けるようにした。 The present invention relates to a cover for preventing grass wrapping in a brush cutter, and relates to a grass cover for brush cutting when a drive gear for passively transmitting a driving force of a prime mover to a rotary blade and a gear box for storing a passive gear are covered. It has been designed to prevent wrapping around and to easily and securely attach it to the gearbox.
【０００２】[0002]
従来、草刈りに使用する刈払機には例えば図６および図７に示すものがあった 。 すなわち、原動機３の駆動力を受動して回転可能にグリップ又はハンドル２を 有する覆管１内に駆動軸４を挿入し、該駆動軸４の先端に装着した駆動ギヤ５を 挿入可能な口部６ａを一側に設けるとともに前記駆動ギヤ５に噛合される受動ギ ヤ７および該受動ギヤ７が装着されて前記駆動軸４に対して所望角度θに設けた 縦長の受動軸８が回転可能に収納される二股状のギヤボックス本体６と、前記受 動軸８の下方部に嵌着される押え環９と該押え環９に重合されて被着される締付 金具１０との間にボルト１２により締付固定される回転刃１１とを備えた構造の ものがある。 そして使用に際して原動機３が駆動し、覆管１内にて駆動軸４が回転して駆動 ギヤ５が回転すると、ギヤボックス６内ではこの駆動ギヤ５に噛合している受動 ギヤ７が回転するので、この受動ギヤ７が装着されている受動軸８は回転される 。その後受動軸８の下方部に嵌着された押え環９と該押え環９に重合されて被着 される締付金具１０との間にボルト１２により締付固定された回転刃１１は受動 軸８を中心に回転され、草は回転刃１１により刈られる。なおＣは回転刃１１の 回転運動により刈り取られる草の巻付きを防止するために、押え環９の周囲に取 付けられたスカート状のカバーである。 Conventionally, there have been brush cutters used for mowing, for example, those shown in FIGS. 6 and 7. That is, the drive shaft 4 is inserted into the cover tube 1 having the grip or handle 2 so that the drive force of the prime mover 3 can be passively rotated, and the drive gear 5 attached to the tip of the drive shaft 4 can be inserted into the opening. 6a is provided on one side and a passive gear 7 meshed with the drive gear 5 and the passive gear 7 are mounted so that a vertically elongated passive shaft 8 provided at a desired angle θ with respect to the drive shaft 4 is rotatable. A bolt is provided between the bifurcated gear box main body 6 to be housed, the retaining ring 9 fitted to the lower portion of the receiving shaft 8 and the fastening metal fitting 10 which is overlapped and attached to the retaining ring 9. There is a structure provided with a rotary blade 11 which is clamped and fixed by 12. When the prime mover 3 is driven during use and the drive shaft 4 rotates in the covering pipe 1 to rotate the drive gear 5, the passive gear 7 meshing with the drive gear 5 rotates in the gear box 6. , The passive shaft 8 on which the passive gear 7 is mounted is rotated. After that, the rotary blade 11, which is fixed by bolts 12 between the holding ring 9 fitted to the lower part of the passive shaft 8 and the fastening metal fitting 10 which is overlapped and attached to the holding ring 9, is the passive shaft. It is rotated around 8, and the grass is mowed by the rotary blade 11. Incidentally, C is a skirt-shaped cover attached to the periphery of the presser ring 9 in order to prevent wrapping of grass cut by the rotary motion of the rotary blade 11.
【０００３】[0003]
【考案が解決しようとする課題】 図６および図７に示すような上記従来の刈払機は、スカート状のカバーＣを押 え環９の周囲に取付けていたが、ギヤボックス６の全体を覆っていないため刈り 採られる草は、原動機３が駆動し、回転刃１１の回転運動によってギヤボックス ６の周囲に巻付く。またカバーＣと回転刃１１との隙間に草が入り込むため、回 転刃１１の回転が拘束され、ついには回転が停止する。 このため草が巻付く場合には、原動機３を停止して巻付いた草を取り去らなけ ればならないので、草刈作業が中断され、非能率的であった。In the conventional brush cutters shown in FIGS. 6 and 7, the skirt-shaped cover C is attached around the holding ring 9, but the entire gear box 6 is covered. The grass to be mowed because it is not present is wound around the gear box 6 by the rotation of the rotary blade 11 driven by the prime mover 3. Further, since grass enters the gap between the cover C and the rotary blade 11, the rotation of the rotary blade 11 is restricted and finally the rotation stops. For this reason, when the grass is wrapped around, the prime mover 3 must be stopped and the wrapped grass must be removed, so the mowing work was interrupted and it was inefficient.
【０００４】 本考案は上記従来の欠点を解決し、刈り採られる草の巻付きを防止して原動機 の負荷や回転刃の回転の停止を阻止し、草刈作業が中断されることなく短時間に 効率的に作業が行え、ギヤボックスへの取付の位置決めを容易且つ確実に行うの にある。The present invention solves the above-mentioned conventional drawbacks, prevents winding of grass to be mowed, and prevents the load of the prime mover and the rotation of the rotary blade from being stopped, so that the grass cutting operation is not interrupted in a short time. This is for efficient work and easy and reliable positioning for attachment to the gearbox.
【０００５】[0005]
本考案は上記課題に鑑みてなされ、原動機の駆動力を受動して回転可能に覆管 内に駆動軸を挿入し、駆動軸の先端に装着した駆動ギヤを挿入可能な口部を一側 に設けるとともに前記駆動ギヤに噛合される受動ギヤが装着され、前記駆動軸に 対して所望角度に設けた縦長の受動軸が回転可能に収納される二股状のギヤボッ クスと、前記受動軸の下方部に嵌着される押え環と該押え環に重合被着される締 付金具との間にボルトにより締付固定される回転刃とを備えた刈払機において、 開放部を下方に有する外形状をなし、前記口部が突出される開口部が外周一側に 設けられたカバー本体を前記ギヤボックスに略全体的に被嵌し、前記カバー本体 には前記ギヤボックスの上面に当接して上下方向の取付位置を規制する第１規制 面部と前記ギヤボックスの左右の側面に当接して左右方向の取付位置を規制する 第２規制面部とが内側の上面および左右の側面に形成されるという手段を採用し た。 The present invention has been made in view of the above problems, and a drive shaft is rotatably driven by passively driving the driving force of a prime mover, and a drive gear attached to the tip of the drive shaft is inserted on one side. A bifurcated gear box in which a passive gear that is provided and meshes with the drive gear is mounted, and a vertically long passive shaft that is provided at a desired angle with respect to the drive shaft is rotatably accommodated, and a lower portion of the passive shaft. A bush cutter having a rotary ring that is clamped and fixed by bolts between a press ring that is fitted to the press ring and a clamp fitting that is overlapped and attached to the press ring, and has an external shape that has an open portion at the bottom. None, a cover main body with an opening from which the mouth is projected is provided on one side of the outer periphery, and is fitted almost entirely onto the gear box, and the cover main body is brought into contact with the upper surface of the gear box to move in the vertical direction. Regulating surface portion for regulating the mounting position of the gear and the gear A second regulating surface sections has adopted the means that are formed on the upper surface and left and right side surfaces of the inner left and right sides of the box abuts to regulate the mounting position of the left-right direction.
【０００６】 また本考案の請求項２は、請求項１において前記カバー本体は金属または合成 樹脂により略伏碗状、または円錘台形、六角錘台形、八角錘台形等の何れかの外 形状に形成されるという手段を採用した。According to a second aspect of the present invention, in the first aspect, the cover body is made of a metal or a synthetic resin and has an outer shape such as a truncated cone shape, a truncated cone shape, a hexagonal truncated pyramid shape, or an octagonal truncated pyramid shape. The means of being formed was adopted.
【０００７】 また本考案の請求項３は、請求項１または請求項２において前記カバー本体の 外側下方には押え環の外周に設けたピン体挿入孔に重合可能な窓孔が設けられる という手段を採用した。According to a third aspect of the present invention, in the first or second aspect, a window is provided below the outside of the cover body so that a pin body insertion hole provided on the outer periphery of the retaining ring has a polymerizable hole. It was adopted.
【０００８】 また本考案の請求項４は、請求項１、または請求項２、請求項３の何れかにお いて前記カバー本体はその側面をギヤボックスに複数個所がねじ止めされるか、 嵌合されたり、係止されるかして固定されるという手段を採用した。According to a fourth aspect of the present invention, in any one of the first aspect, the second aspect, and the third aspect, the side surface of the cover body is screwed to a gear box at a plurality of positions or is fitted. We adopted the means of fitting, locking or fixing.
【０００９】[0009]
以下本考案の実施の形態の具体例を図１乃至図５に示す一実施例について説明 する。 本実施例において刈払機自体の構成は従来のものと何ら変わりない。 すなわち、１はグリップ又はハンドル２を有する金属製の覆管であり、この覆 管１の基端には原動機３が設けられている。４は原動機３の駆動力を受動して回 転可能に覆管１内に挿入された駆動軸であり、この駆動軸４の先端には駆動ギヤ ５が装着されている。駆動ギヤ５は図示のような相互に噛合する受動ギヤ７に対 する取付軸が平行ではなく交叉しているのと、コンパクトな組付設計になるのと 、原動機３からの駆動力を伝達ロスなく後段に伝達するのとから傘歯車が好適に 使用される。６は金属製のギヤボックスであり、このギヤボックス６は前記駆動 軸４の先端に装着された駆動ギヤ５を挿入可能な口部６ａが一側に設けられた二 股状であり、このギヤボックス６内には前記駆動ギヤ５に噛合される受動ギヤ７ および該受動ギヤ７が装着された縦長の受動軸８が前記駆動軸４に対して所望角 度θをもって縦長に収納される。この時の所望角度θとは、例えば６０°程度で ある。 ９は前記受動軸８の下方部に嵌着される押え環であり、この押え環９は前記受 動軸８に嵌入される小径筒状部９ａと、該小径筒状部９ａの外周の下方に位置す る連続壁部９ｃを介して連設された大径筒状部９ｂとよりなる内外二重の筒状構 造に形成される。そしてギヤボックス６の下方部は前記小径筒状部９ａと大径筒 状部９ｂとの間に形成される凹部９ｄ内に収容される。 ９ｂ1 はピン体挿入孔であり、このピン体挿入孔９ｂ1 は前記大径筒状部９ｂ に設けられる。９ｃ1 は前記押え環９の下面に形成された突出部であり、この突 出部９ｃ1 内に後記回転刃１１が嵌入される。A specific example of the embodiment of the present invention will be described below with reference to an example shown in FIGS. In this embodiment, the structure of the brush cutter itself is the same as the conventional one. That is, reference numeral 1 denotes a metallic cover tube having a grip or a handle 2, and a prime mover 3 is provided at the base end of the cover tube 1. Reference numeral 4 denotes a drive shaft which is rotatably inserted into the covering pipe 1 by passively driving the driving force of the prime mover 3, and a drive gear 5 is attached to the tip of the drive shaft 4. In the drive gear 5, the mounting shafts for the passive gears 7 meshing with each other as shown in the drawing are not parallel but intersect, the compact assembly design is adopted, and the driving force from the prime mover 3 is transmitted. Bevel gears are preferably used because they are transmitted to the latter stage without being transmitted. Reference numeral 6 is a metal gear box, and this gear box 6 has a bifurcated shape with an opening 6a on one side into which the drive gear 5 mounted at the tip of the drive shaft 4 can be inserted. In the box 6, a passive gear 7 meshed with the drive gear 5 and a vertically long passive shaft 8 on which the passive gear 7 is mounted are housed vertically with a desired angle θ with respect to the drive shaft 4. The desired angle θ at this time is, for example, about 60 °. A pressing ring 9 is fitted to the lower part of the passive shaft 8. The pressing ring 9 is a small-diameter cylindrical part 9a fitted to the receiving shaft 8 and a lower part of the outer circumference of the small-diameter cylindrical part 9a. The inner and outer double-walled tubular structure is composed of a large-diameter tubular portion 9b that is continuously provided via a continuous wall portion 9c located at. The lower part of the gear box 6 is housed in a recess 9d formed between the small-diameter cylindrical portion 9a and the large-diameter cylindrical portion 9b. 9b 1 is a pin body insertion hole, and this pin body insertion hole 9b 1 is provided in the large-diameter cylindrical portion 9b 1 . Reference numeral 9c 1 is a projecting portion formed on the lower surface of the pressing ring 9, and a rotary blade 11 described later is fitted into the projecting portion 9c 1 .
【００１０】 １０は前記押え環９に重合被着される締付金具であり、この締付金具１０と押 え環９との間に挟持される回転刃１１はボルト１２のねじ部１２ａを前記受動軸 ８の内周に設けた雌ねじ部８ａ内に螺入することにより締付固定される。１３は ボルト１２の頭部１２ｂが地面等との摩擦により磨耗するのを防止するために締 付金具１０の下面に重合されてボルト１２により取付けられるボルトガードであ る。Reference numeral 10 denotes a tightening fitting that is superposed on the pressing ring 9, and a rotary blade 11 sandwiched between the tightening fitting 10 and the pressing ring 9 has a threaded portion 12 a of a bolt 12 as described above. The passive shaft 8 is tightened and fixed by being screwed into the female screw portion 8a provided on the inner circumference of the passive shaft 8. A bolt guard 13 is attached to the head 12b of the bolt 12 by the bolt 12 in order to prevent the head 12b of the bolt 12 from being worn due to friction with the ground or the like.
【００１１】 １４は前記ギヤボックス６に略全体的に被嵌される金属製または合成樹脂製の カバー本体であり、このカバー本体１４は図１乃至図５に示すものでは開放部１ ４ａを下方に有した略伏碗状に形成され、ギヤボックス６の一側に設けた口部６ ａが突出される開口部１４ｂを外周一側に設けている。１４ｃはカバー本体１４ の外側下方に設けられた長円形の窓孔であり、この窓孔１４ｃは前記押え環９の 外周に設けたピン体挿入孔９ｂ1 に重合可能になることにより、回転刃１１の取 付時にこの窓孔１４ｃとピン体挿入孔９ｂ1 とに外部からピンＰを挿入して受動 軸８内にボルト１２を螺入する時に押え環９、受動軸８、締付金具１０、ボルト ガード１３の空転を防止して迅速且つ確実にボルト１２を螺合するようになって いる。 Ｋ1 ，Ｋ2 は前記受動軸８をギヤボックス６内に回転自在に支持するために、 ギヤボックス６内において受動軸８の上下の外周を支持するボールベアリング、 スラストベアリング等のころがり軸受手段である。またＫ3 は同様に前記駆動ギ ヤ５を口部６ａ内において回転自在に支持するためのころがり軸受手段である。Reference numeral 14 denotes a cover body made of metal or synthetic resin which is fitted almost entirely on the gear box 6, and the cover body 14 has an open portion 14a at the lower side in the one shown in FIGS. The opening 14b is formed in a substantially conical shape and has an opening 14b formed on one side of the outer periphery of the gear box 6 from which the opening 6a is projected. Reference numeral 14c designates an oval window hole provided on the lower outside of the cover body 14, and this window hole 14c can be overlapped with the pin body insertion hole 9b 1 provided on the outer circumference of the holding ring 9 to thereby form a rotary blade. pressing ring 9 when the bolt 12 is screwed into 11 taken with time to the passive shaft within 8 by inserting the pin P from the outside and the window hole 14c and the pin member insertion hole 9b 1 of driven shaft 8, with fasteners 10 The bolt guard 13 is prevented from idling so that the bolt 12 can be screwed quickly and securely. In order to rotatably support the passive shaft 8 in the gear box 6, K 1 and K 2 are rolling bearing means such as ball bearings and thrust bearings that support the upper and lower outer circumferences of the passive shaft 8 in the gear box 6. is there. Similarly, K 3 is a rolling bearing means for rotatably supporting the drive gear 5 in the mouth portion 6a.
【００１２】 １５は前記カバー本体１４の内側の上面に形成された第１規制面部であり、こ の第１規制面部１５はギヤボックス６の上面６ｂに当接することによりギヤボッ クス６に対する上下方向の取付位置を規制するためのものである。１６は同様に 前記カバー本体１４の内側の左右の側面に形成された第２規制面部であり、この 第２規制面部１６はギヤボックス６の左右の側面６ｃ，６ｃに当接することによ りギヤボックス６に対する左右方向の取付位置を規制するためのものである。Reference numeral 15 denotes a first restricting surface portion formed on the inner upper surface of the cover body 14, and the first restricting surface portion 15 abuts on the upper surface 6 b of the gear box 6 so that the first restricting surface portion 15 moves in the vertical direction with respect to the gear box 6. It is for controlling the mounting position. Reference numeral 16 is a second restricting surface portion similarly formed on the left and right side surfaces inside the cover body 14, and the second restricting surface portion 16 is brought into contact with the left and right side surfaces 6c, 6c of the gear box 6 so that the gear This is for restricting the mounting position in the left-right direction with respect to the box 6.
【００１３】 カバー本体１４の前記ギヤボックス６に対する取付けは、図示するようにその 側面をギヤボックス６に対して複数個所が取付ねじ１７，１７を介してねじ止め されるほか、図には示さないが嵌合されたり、係止されることにより固定される 。The cover body 14 is attached to the gear box 6 as shown in the figure, except that the side surface of the cover body 14 is screwed to the gear box 6 at a plurality of places via attachment screws 17 and 17, and is not shown in the figure. It is fixed by fitting and locking.
【００１４】 本考案の一実施例は以上の構成からなり、カバー本体１４をギヤボックス６に 取付けるのには、カバー本体１４の下方に形成される開放部１４ａからギヤボッ クス６を挿入することにより、カバー本体１４の外周一側に設けた開口部１４ｂ からギヤボックス６の一側に設けた口部６ａを突出する。 そしてカバー本体１４の内側の上面に形成された第１規制面部１５がギヤボッ クス６の上面に当接してカバー本体１４の上下方向の取付位置が規制されて位置 決めがなされる。しかもカバー本体１４の内側の左右の側面に形成された第２規 制面部１６，１６がギヤボックス６の左右の側面６ｃ，６ｃに当接してカバー本 体１４のギヤボックス６に対する左右方向の取付位置が規制されて位置決めがな される。 このようにしてギヤボックス６に対してカバー本体１４の取付位置を上下方向 おび左右方向に位置決めがなされるので、カバー本体１４の左右の側面から取付 ねじ１７，１７を螺入することによりギヤボックス６にカバー本体１４を被冠し て迅速且つ確実に固定することができる。The embodiment of the present invention has the above-described structure. The cover body 14 is attached to the gear box 6 by inserting the gear box 6 from the opening 14a formed below the cover body 14. The mouth portion 6a provided on one side of the gear box 6 projects from the opening portion 14b provided on one side of the outer periphery of the cover body 14. Then, the first restricting surface portion 15 formed on the inner upper surface of the cover body 14 comes into contact with the upper surface of the gear box 6 to restrict the vertical mounting position of the cover body 14 for positioning. Moreover, the second control surface portions 16, 16 formed on the left and right side surfaces inside the cover body 14 abut on the left and right side surfaces 6c, 6c of the gear box 6 to attach the cover body 14 to the gear box 6 in the left and right direction. The position is regulated and the positioning is done. In this way, the mounting position of the cover body 14 with respect to the gear box 6 is positioned in the up-down direction and the left-right direction, so that by mounting the mounting screws 17, 17 from the left and right side surfaces of the cover body 14, the gear box The cover main body 14 can be crowned on 6 to be fast and surely fixed.
【００１５】 そして回転刃１１をギヤボックス６の下方に突出している受動軸８に取付けた り、交換するのには、カバー本体１４の外周下方に設けた窓孔１４ｃとこの窓孔 １４ｃに重合するように押え環９に設けたピン体挿入孔９ｂ1 とにピンＰを挿入 することにより、押え環９とこの押え環９が嵌入されている受動軸８との空転を 規制することができるので、回転刃１１を押え環９の下方に突出されている突出 部９ｃ1 に嵌合して固定するのに便利である。すなわち回転刃１１の受動軸８に 対する締付、固定には、締付金具１０を受動軸８に嵌入することにより、締付金 具１０と押え環９とで回転刃１１を挟持する。それからボルトガード１３を締付 金具１０の下面に重合した状態で受動軸８の雌ねじ部８ａ内にボルト１２を螺入 することによりボルト１２の頭部１２ｂの押付けにて押え環９、締付金具１０、 ボルトガード１３とにより回転刃１１を受動軸８に対して上下から締付、固定す る。To attach or replace the rotary blade 11 to the passive shaft 8 protruding below the gear box 6, a window hole 14c provided on the lower outer periphery of the cover body 14 and the window hole 14c are overlapped with each other. As described above, by inserting the pin P into the pin body insertion hole 9b 1 provided in the holding ring 9, it is possible to regulate the idling of the holding ring 9 and the passive shaft 8 into which the holding ring 9 is fitted. Therefore, it is convenient to fit and fix the rotary blade 11 to the protruding portion 9c 1 protruding below the holding ring 9. That is, when the rotary blade 11 is fastened and fixed to the passive shaft 8, the fastening metal fitting 10 is fitted into the passive shaft 8 to sandwich the rotary blade 11 between the fastening tool 10 and the pressing ring 9. Then, the bolt 12 is screwed into the female screw portion 8a of the passive shaft 8 in a state where the bolt guard 13 is overlapped with the lower surface of the tightening metal fitting 10 to press the head 12b of the bolt 12 to press the retaining ring 9 and the tightening metal fitting. 10. The rotary blade 11 is tightened and fixed to the passive shaft 8 from above and below by the bolt guard 13.
【００１６】 こうして刈払機の使用にあたり、原動機３が駆動して駆動軸４が覆管１内にお いて回転すると、この駆動軸４の先端に装着した駆動ギヤ５と、この駆動ギヤ５ に噛合する受動ギヤ７とを介して受動軸８が回転されるので、この受動軸８を中 心として回転刃１１が回転されることにより草が刈り採られる点は従来の刈払機 とその作用が何ら変わりはない。In use of the brush cutter, when the prime mover 3 is driven and the drive shaft 4 rotates in the covering pipe 1, the drive gear 5 mounted on the tip of the drive shaft 4 and the drive gear 5 mesh with each other. Since the passive shaft 8 is rotated via the passive gear 7 that rotates, the grass is mowed by rotating the rotary blade 11 with the passive shaft 8 as the center. There is no change.
【００１７】 しかしながら本実施例では上記のようにギヤボックス６は図示するような略伏 碗状をなすカバー本体１４により略全体的に覆われている。従って、回転刃１１ の回転により刈り採られる草は回転刃１１による遠心力を受けてギヤボックス６ に巻付けられようとしてもカバー本体１４の上方部が先窄まりに形成されている ので、上方向にずれ動いて巻付くのが防止される。このため従来の刈払機のよう に、ギヤボックス６に対する草の巻付きにより、回転刃１１の回転の抵抗が増大 して回転が停止したり、回転が拘束を受けることにより原動機３に負荷がかかる のが阻止される。従って従来のようにギヤボックス６に巻付かれる草の除去作業 を行う等の作業が中断されることがなく、効率的に草刈作業が行なえる。However, in this embodiment, as described above, the gear box 6 is substantially entirely covered by the cover body 14 having a substantially bowl shape as shown in the drawing. Therefore, the grass cut by the rotation of the rotary blade 11 receives the centrifugal force from the rotary blade 11 and is wound around the gear box 6 because the upper portion of the cover body 14 is formed in a tapered shape. It is prevented from slipping around and winding. Therefore, as in the conventional brush cutter, the grass is wound around the gear box 6 to increase the rotation resistance of the rotary blade 11 and stop the rotation, or the rotation is restricted, so that the prime mover 3 is loaded. Is prevented. Therefore, unlike the conventional case, the work of removing the grass wound around the gear box 6 is not interrupted, and the grass cutting work can be performed efficiently.
【００１８】 図示する上記実施例においては、ギヤボックス６を覆うカバー本体１４は外形 状が略伏碗状に形成されたものが使用さているが、これに限ることなく円錐台形 、六角錘台形、八角錘台形の何れかの多角形状に形成されたものでも、回転刃９ の回転に起因する遠心力を受けて刈り採られる草のギヤボッックス６への巻付き が防止される。In the illustrated embodiment described above, the cover body 14 for covering the gear box 6 is used in which the outer shape is formed in a substantially conical shape, but the present invention is not limited to this, and it is a truncated cone shape, a hexagonal pyramid shape, Even if the polygonal shape is an octagonal truncated pyramid, the grass to be mowed by the centrifugal force caused by the rotation of the rotary blade 9 is prevented from being wound around the gear box 6.
【００１９】[0019]
本考案は以上のように原動機から駆動力を受動する駆動軸の先端に装着した駆 動ギヤとこの駆動ギヤに噛合される受動ギヤとを収納するギヤボックスにカバー 本体を全体的に被嵌したので、回転刃によって刈り取られる草の巻付けがカバー 本体により防止され、回転刃の停止や原動機の負荷を阻止できる。このため草刈 作業が中断されることなく短時間に効率的に草刈作業が行え、カバー本体をギヤ ボックスに取付けるための位置決めが容易且つ確実に行え、製作および組付けに 便宜である。 As described above, according to the present invention, the cover body is entirely fitted in the gear box that houses the drive gear mounted on the tip of the drive shaft for passively driving the drive force from the prime mover and the passive gear meshed with the drive gear. Therefore, the cover body prevents winding of grass cut by the rotary blade, and the stop of the rotary blade and the load on the prime mover can be prevented. Therefore, the mowing work can be efficiently performed in a short time without interruption, and the positioning for attaching the cover body to the gear box can be performed easily and surely, which is convenient for the production and assembly.
【図１】本考案の刈払機における草巻付き防止用被着カ
バーの一実施例を示す拡大断面図である。FIG. 1 is an enlarged cross-sectional view showing an embodiment of an adhered cover for preventing grass wrapping in a brush cutter of the present invention.
【図２】同じく草巻き付き防止用被着カバーを取付けた
状態の本実施例の刈払機の全体を示す斜面図である。FIG. 2 is a perspective view showing the entire brush cutter of the present embodiment with a grass wrapping prevention cover attached thereto.
【図３】同じく本実施例を示す拡大部分断面図である。FIG. 3 is an enlarged partial sectional view showing the present embodiment as well.
【図４】同じく本実施例で使用される草巻き付き防止用
被着カバーの一例を示す部分切欠拡大側面図である。FIG. 4 is a partially cutaway enlarged side view showing an example of a grass wrap preventing adherend cover which is also used in the present embodiment.
【図５】同じく本実施例で使用される草巻き付き防止用
被着カバーの拡大断面図である。FIG. 5 is an enlarged cross-sectional view of the grass wrapping prevention adhered cover that is also used in this embodiment.
【図６】従来の刈払機を示す斜面図である。FIG. 6 is a perspective view showing a conventional brush cutter.
【図７】同じく従来の刈払機を示す拡大断面図である。FIG. 7 is an enlarged cross-sectional view of the same conventional brush cutter.
１ 覆管 ３ 原動機 ４ 駆動軸 ５ 駆動ギヤ ６ ギヤボックス ６ａ 口部 ７ 受動ギヤ ８ 受動軸 ９ 押え環 ９ｂ1 ピン体挿入孔 １０ 締付金具 １１ 回転刃 １２ ボルト １３ ボルトガード １４ カバー本体 １５ 第１規制面部 １６ 第２規制面部1 Cover pipe 3 Drive motor 4 Drive shaft 5 Drive gear 6 Gear box 6a Mouth portion 7 Passive gear 8 Passive shaft 9 Holding ring 9b 1 Pin body insertion hole 10 Tightening fitting 11 Rotating blade 12 Bolt 13 Bolt guard 14 Cover body 15 1st Regulation surface portion 16 Second regulation surface portion
Claims (4)
管内に駆動軸を挿入し、該駆動軸の先端に装着した駆動
ギヤを挿入可能な口部を一側に設けるとともに前記駆動
ギヤに噛合される受動ギヤおよび該受動ギヤが装着さ
れ、前記駆動軸に対して所望角度に設けた縦長の受動軸
が回転自在に収納される二股状のギヤボックスと、前記
受動軸の下方部に嵌着される押え環と該押え環に重合被
着される締付金具との間にボルトにより締付固定される
回転刃とを備えた刈払機において、開放部を下方に有す
る外形状をなし、前記口部が突出される開口部が外周一
側に設けられたカバー本体を前記ギヤボックスに略全体
的に被嵌し、前記カバー本体には前記ギヤボックスの上
面に当接して上下方向の取付位置を規制する第１規制面
部と前記ギヤボックスの左右の側面に当接して左右方向
の取付位置を規制する第２規制面部とが内側の上面およ
び左右の側面に形成されたことを特徴とする刈払機にお
ける草巻付き防止用被着カバー。1. A drive shaft is rotatably rotatably driven by a driving force of a prime mover, and an opening is provided on one side to which a drive gear mounted at a tip of the drive shaft can be inserted, and the drive gear is provided. A bifurcated gearbox in which a passive gear that is meshed with and a passive gear that is mounted to the drive shaft and that has a longitudinal direction and that is provided at a desired angle with respect to the drive shaft are rotatably accommodated; and a lower portion of the passive shaft. A bush cutter having a press ring to be fitted and a rotary blade clamped and fixed to the press ring by a bolt between the press ring and the clamp fitting, and having an outer shape having an open portion below , A cover main body, in which an opening from which the mouth is projected is provided on one side of the outer periphery, is fitted almost entirely into the gear box, and the cover main body is brought into contact with the upper surface of the gear box to move in the vertical direction. First restricting surface part for restricting the mounting position and the gear box A grass cover prevention cover for a brush cutter, characterized in that a second regulating surface portion that abuts on the left and right side surfaces of the and regulates the mounting position in the left and right direction is formed on the inner upper surface and the left and right side surfaces.
より略伏碗状、または円錐台形、六角錘台形、八角錘台
形等の何れかの外形状に形成されたことを特徴とする請
求項１に記載の刈払機における草巻付き防止用被着カバ
ー。2. The cover body is formed of a metal or a synthetic resin in an approximately conical shape, or an outer shape such as a truncated cone shape, a hexagonal truncated pyramid shape, an octagonal truncated pyramid shape, or the like. An adherend cover for preventing grass winding in the brush cutter described.
環の外周に設けたピン体挿入孔に重合可能な窓孔が設け
られたことを特徴とする請求項１または請求項２に記載
の刈払機における草巻付き防止用被着カバー。3. A window hole, which can be overlapped with a pin body insertion hole provided on the outer periphery of the press ring, is provided below the outside of the cover body. Adhesive cover to prevent grass wrapping in brush cutters.
ックスに複数個所がねじ止めされるか、嵌合されるか、
係止されるかして固定されることを特徴とする請求項
１、または請求項２、請求項３の何れかに記載の刈払機
における草巻付き防止用被着カバー。4. The cover main body is screwed or fitted at a plurality of side surfaces thereof to the gear box,
The grass cover prevention cover for a brush cutter according to claim 1, 2 or 3, wherein the cover is fixed by being locked or fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1996011120U JP3037377U (en) | 1996-10-31 | 1996-10-31 | Adhesive cover for preventing weeding in a brush cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1996011120U JP3037377U (en) | 1996-10-31 | 1996-10-31 | Adhesive cover for preventing weeding in a brush cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3037377U true JP3037377U (en) | 1997-05-16 |
Family
ID=43172101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1996011120U Expired - Lifetime JP3037377U (en) | 1996-10-31 | 1996-10-31 | Adhesive cover for preventing weeding in a brush cutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3037377U (en) |
-
1996
- 1996-10-31 JP JP1996011120U patent/JP3037377U/en not_active Expired - Lifetime
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