【考案の詳細な説明】
従来の刈払機の安全カバーを第１図乃至第４図
について説明する。第１図は従来の刈払機の全体
図、第２図は安全カバーの上面図、第３図は安全
カバーの正面図、第４図は安全カバーの下面図を
示す。これらの図において、１はエンジン、２は
竿、３はゴムで防振された握部、４は傘歯車を内
蔵した減速機、５は刈刃、６は安全カバー、７は
安全カバー取付ボルト、８はめねじが切つてある
安全カバー取付け座金である。刈払機は芝、雑
草、雑木等種々雑多な草木の刈取り、代採に使用
されるが、使用時のエンジン１の回転数や、刈払
機の姿勢も非常に変化に富んでいる。このため、
蔓や、長細い茎を刈取る場合、エンジンの回転速
度を下げて使用すると、しばしば第１図及び第２
図に示すように減速機４のまわりのＡ部に、これ
ら刈取物が巻き付き刈取り不能の状態となること
がある。安全カバー６は刈取り物がオペレータ
（図示しない）に飛散することを防止する目的で
取付けられているが、従来の安全カバー６は減速
機４及び刈刃５との隙間が大きく、減速機４のま
わりのＡ部に刈取物が巻き付くことを防止する効
果はなく、作業性を向上さす機能は有していな
い。[Detailed Description of the Invention] A conventional safety cover for a brush cutter will be explained with reference to FIGS. 1 to 4. FIG. 1 is an overall view of a conventional brush cutter, FIG. 2 is a top view of the safety cover, FIG. 3 is a front view of the safety cover, and FIG. 4 is a bottom view of the safety cover. In these figures, 1 is the engine, 2 is the rod, 3 is the rubber grip, 4 is the reducer with a built-in bevel gear, 5 is the cutting blade, 6 is the safety cover, and 7 is the safety cover mounting bolt. , 8 are safety cover mounting washers with internal threads. Brush cutters are used to cut and harvest various types of vegetation such as grass, weeds, and shrubs, but the rotational speed of the engine 1 and the posture of the brush cutter during use vary widely. For this reason,
When cutting vines or long, thin stems, lowering the engine speed often results in problems in Figures 1 and 2.
As shown in the figure, these reaped materials may become wrapped around the area A around the reducer 4, making it impossible to reap them. The safety cover 6 is installed for the purpose of preventing cut materials from scattering to an operator (not shown), but the conventional safety cover 6 has a large gap between the reducer 4 and the cutting blade 5, and It does not have the effect of preventing the harvested material from wrapping around the surrounding area A, and does not have the function of improving workability.
本考案は、したがつて、雑草等の刈取り作業時
の安全性を確保し、かつ作業性が向上する安全カ
バーを得ることを目的として考案されたものであ
る。 Therefore, the present invention has been devised for the purpose of providing a safety cover that ensures safety during the work of cutting weeds and the like and improves work efficiency.
本考案は、安全カバーと刈払機の刈刃及び減速
機部との隙間を雑草の切口径より小さくなる様に
形成したことを特徴とする刈払機の安全カバーに
係り、減速機まわりに蔓、茎等が巻付かない様安
全カバーと減速機及び刈刃の隙間を小さくした刈
払機の安全カバーを提供しようとするもので、刈
払機に応用できるものである。 The present invention relates to a safety cover for a brush cutter characterized in that the gap between the safety cover and the cutting blade and reducer portion of the brush cutter is formed to be smaller than the cutting diameter of the weed. The present invention aims to provide a safety cover for a brush cutter in which the gap between the safety cover, the speed reducer, and the cutting blade is reduced to prevent stems from getting wrapped around it, and can be applied to brush cutters.
本考案の刈払機の安全カバーの一実施例を第５
図乃至第８図について説明する。第５図は本考案
の刈払機の安全カバーの一実施例の正面図、第６
図はその安全カバーの下面図、第７図はその安全
カバーが刈払機に取付けられた状態を示す上面
図、第８図はその正面図を示す。本考案によれ
ば、第７図に示す安全カバー６′と減速機４の隙
間l1及び第８図に示す安全カバー６′と刈刃５の
隙間l2は、共に種々の雑草の切口径以下になる
様、安全カバー６′は竿２と減速機４に取付ボル
ト７で取付けられている。 A fifth embodiment of the safety cover for a brush cutter according to the present invention is shown in the fifth example.
A description will be given of FIGS. 8 through 8. Fig. 5 is a front view of one embodiment of the safety cover of the brush cutter of the present invention;
The figure shows a bottom view of the safety cover, FIG. 7 shows a top view of the safety cover attached to the brush cutter, and FIG. 8 shows a front view of the safety cover. According to the present invention, the gap l 1 between the safety cover 6' and the reducer 4 shown in FIG. 7 and the gap l 2 between the safety cover 6' and the cutting blade 5 shown in FIG. The safety cover 6' is attached to the rod 2 and reducer 4 with mounting bolts 7 as shown below.
本考案の作用について説明する。刈刃５で刈取
られた雑草は刈刃５の周速が速い時（即ちエンジ
ンの回転数が速い時）は雑草の切口が刈刃５の上
に乗つてきても遠心力で放り出されて減速機４に
巻き付くことは殆んどない。しかしながら、刈刃
５の周速が遅いと遠心力で放り出されず、刈刃５
の上に乗つたまま回転し、減速機４部に巻き付い
てしまう。したがつて減速機４部への雑草の巻き
付きを防止するためには、刈刃５の上に乗つてき
た雑草の切口が減速機４を中心として回転できな
い様な回転防止板を設けることである。 The operation of the present invention will be explained. When the circumferential speed of the cutting blade 5 is high (that is, when the engine speed is high), the weeds cut by the cutting blade 5 are thrown away by centrifugal force even if the cut end of the weed lands on the cutting blade 5. It almost never gets wrapped around the reducer 4. However, if the circumferential speed of the cutting blade 5 is slow, the cutting blade 5 will not be thrown out due to centrifugal force, and
The machine rotates while riding on top of the machine, and ends up getting wrapped around the 4th part of the reducer. Therefore, in order to prevent weeds from wrapping around the reducer 4, it is necessary to provide a rotation prevention plate that prevents the cut ends of the weeds that have climbed onto the cutting blade 5 from rotating around the reducer 4. .
本考案は以上の構成よりなり、刈刃５の上に乗
つてき雑草の切口が減速機４を中心とした運動が
できない様安全カバー６′と減速機４の隙間l1ま
た安全カバー６′と刈刃５の隙間l2を種々の雑草
の切口径より小さくしてある。したがつて、刈刃
５の上に乗つてきた雑草の切口は安全カバー６′
の端部に衝突して、刈刃５の外へ飛散してしま
い、減速機４のまわりに巻き付くことはない効果
を奏するものである。 The present invention has the above-mentioned structure, and the gap between the safety cover 6' and the reducer 4 is increased so that the cut end of the weeds riding on the cutting blade 5 cannot move around the reducer 4. Also, the safety cover 6' The gap l2 between the cutting blade 5 and the cutting blade 5 is made smaller than the cutting diameter of various weeds. Therefore, the cut end of the weed that has landed on the cutting blade 5 is covered by the safety cover 6'.
This has the effect of preventing the cutting blades from colliding with the ends of the blades and scattering outside the cutting blades 5 and wrapping around the reducer 4.
【図面の簡単な説明】[Brief explanation of the drawing]
第１図は従来の刈払機の全体図、第２図は安全
カバーの上面図、第３図は安全カバーの正面図、
第４図は安全カバーの下面図、第５図は本考案の
刈払機の安全カバーの一実施例の正面図、第６図
はその安全カバーの下面図、第７図はその安全カ
バーが刈払機に取付けられた状態を示す上面図、
第８図はその正面図を示す。
２……竿、４……減速機、５……刈刃、６′…
…本考案の安全カバー、７……取付ボルト。
Figure 1 is an overall view of a conventional brush cutter, Figure 2 is a top view of the safety cover, Figure 3 is a front view of the safety cover,
Fig. 4 is a bottom view of the safety cover, Fig. 5 is a front view of one embodiment of the safety cover of the brush cutter of the present invention, Fig. 6 is a bottom view of the safety cover, and Fig. 7 is a bottom view of the safety cover. A top view showing the state in which it is installed on the hair removal machine,
FIG. 8 shows its front view. 2... Rod, 4... Reducer, 5... Cutting blade, 6'...
...Safety cover of the present invention, 7...Mounting bolt.