JPH0524526B2 - - Google Patents
Info
- Publication number
- JPH0524526B2 JPH0524526B2 JP30431887A JP30431887A JPH0524526B2 JP H0524526 B2 JPH0524526 B2 JP H0524526B2 JP 30431887 A JP30431887 A JP 30431887A JP 30431887 A JP30431887 A JP 30431887A JP H0524526 B2 JPH0524526 B2 JP H0524526B2
- Authority
- JP
- Japan
- Prior art keywords
- clutch
- operating
- clutch lever
- interlocking
- interlocking member
- 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 - Lifetime
Links
- 230000009471 action Effects 0.000 claims description 7
- 230000009849 deactivation Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Harvester Elements (AREA)
- Mechanical Control Devices (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、刈刃用クラツチを設けた歩行型芝刈
り機のクラツチ操作構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a clutch operation structure for a walk-behind lawn mower provided with a clutch for cutting blades.
上記歩行型芝刈り機において、従来、刈刃用ク
ラツチの人為操作のためのクラツチレバーをクラ
ツチ切り位置からクラツチ入り位置に切換えるた
めの操作と、このクラツチレバー操作とは異なる
操作との２つの人為操作をすることにより始めて
刈刃が駆動されるように安全を図られたものとし
て、例えば実公昭60−33785号公報に示されるも
のがあつた。すなわち、クラツチレバーをクラツ
チ切り位置にロツクする固定機構をロツク状態に
付勢された状態で設けると共に、前記固定機構の
解除操作のための人為操作具を設けることによ
り、刈刃用クラツチの切り操作がされるとクラツ
チレバーがクラツチ切り位置に自動的にロツクさ
れ、このレバーロツクの解除操作とクラツチレバ
ーの切換え操作とをすることで刈刃用クラツチが
入りになるよう構成されているのである。
In the walk-behind lawn mower, conventionally, there are two types of manual operations for the mowing blade clutch: an operation for switching the clutch lever from the clutch disengaged position to the clutch engaged position, and an operation different from this clutch lever operation. For example, Japanese Utility Model Publication No. 60-33785 discloses a safety device in which the cutting blade is driven only by operation. That is, by providing a fixing mechanism that locks the clutch lever in the clutch disengaged position in a state in which it is biased to the locked state, and by providing an artificial operating tool for releasing the fixing mechanism, the disengagement of the cutting blade clutch is facilitated. When the clutch lever is released, the clutch lever is automatically locked in the clutch disengaged position, and by releasing the lever lock and switching the clutch lever, the cutting blade clutch is engaged.
従来の操作構造の場合、レバーロツクの解除操
作が必要であることを失念されり気付かずにクラ
ツチレバーに無理に操作力を加えられ、クラツチ
レバーや安全装置としての固定機構の変形や破損
を招かれることがあつた。
In the case of the conventional operation structure, people forget that it is necessary to release the lever lock, and forcefully applies operating force to the clutch lever without realizing it, resulting in deformation or damage to the clutch lever and the fixing mechanism as a safety device. Something happened.
本発明の目的は、上記安全策を講じ得るよう
に、しかも、誤操作による破損を構造の簡略化を
図りながら回避できるようにすることにある。 An object of the present invention is to enable the above-mentioned safety measures to be taken and to avoid damage caused by erroneous operation while simplifying the structure.
本発明による歩行型芝刈り機のクラツチ操作構
造が特徴とするところは、刈刃用クラツチの操作
部と人為操作用クラツチレバーとを同一の軸芯の
周りで相対揺動自在に取付け、前記操作部と前記
クラツチレバーとの連動部材を前記軸芯に沿つた
摺動により、前記操作部に係合した作用位置と、
前記操作部から離脱した作用解除位置とに切換わ
る状態で前記クラツチレバーに取付け、前記連動
部材を前記作用解除位置に付勢するスプリングを
設けると共に、前記連動部材を前記作用位置に人
為操作する連動操作具を前記連動部材１４に一体
摺動自在に連設してあることにあり、その作用及
び効果は次のとおりである。
The clutch operation structure for a walk-behind lawn mower according to the present invention is characterized in that the operating section of the cutting blade clutch and the clutch lever for manual operation are mounted so as to be relatively swingable around the same axis, and the an operating position in which an interlocking member between the part and the clutch lever is engaged with the operating part by sliding along the axis;
An interlocking mechanism that is attached to the clutch lever in a state where it is switched to an action release position separated from the operating portion, and includes a spring that biases the interlocking member to the action release position, and that the interlocking member is manually operated to the action release position. The operating tool is integrally and slidably connected to the interlocking member 14, and its functions and effects are as follows.
連動部材は人為操作力を付与しない限りはスプ
リングのために作用解除位置になつており、連動
操作具の操作により連動部材を作用位置に切換え
操作してクラツチレバーと操作部とを連動状態に
すると共にクラツチレバーを切り位置から入り位
置に切換え操作することによつて刈刃用クラツチ
が入りになるのであり、連動部材の切換え操作を
しないでクラツチレバーの切換え操作のみをした
だけでは、クラツチレバーと操作部とが非連動状
態にあつてクラツチレバーのみが単独で空動き
し、刈刃用クラツチが入りにならない。
The interlocking member is in the deactivated position due to the spring unless a human operating force is applied, and the interlocking member is switched to the active position by operating the interlocking operating tool, thereby interlocking the clutch lever and the operating section. At the same time, the mowing blade clutch is engaged by switching the clutch lever from the disengaged position to the engaged position, and if you only switch the clutch lever without switching the interlocking member, the clutch lever will not move properly. Since the operating part is not interlocked with the clutch lever, only the clutch lever moves idly by itself, and the mowing blade clutch does not engage.
連動部材及び連動操作具が摺動式であることに
より、それらの形状及び取付構造を比較的簡素で
あるか簡単にしながら所定の連動や運動解除がで
きる。 Since the interlocking member and the interlocking operating tool are sliding types, the predetermined interlocking and motion cancellation can be performed while keeping their shape and mounting structure relatively simple or simple.
連動部材の前記取付構成とスプリングとの作用
により、クラツチレバーを入り位置に切換えるた
めの操作と、このクラツチレバー操作とは異なる
ところの操作としての連動部材用操作との２つの
人為操作をすることで始めて刈刃用クラツチが入
りになるようにでき、冒記した安全を図ることが
可能になつた。
Due to the above-mentioned mounting structure of the interlocking member and the action of the spring, two manual operations are performed: an operation for switching the clutch lever to the engaged position, and an operation for the interlocking member that is different from this clutch lever operation. For the first time, the mower blade clutch was able to be engaged, making it possible to achieve the safety mentioned above.
しかも、クラツチレバーに対する操作のみがさ
れたときにはクラツチレバーが空動きして操作力
吸収をすることにより、クラツチレバー操作のみ
をする、誤操作がされても変形や破損が生じにく
くなり、故障しにくい優れたものになつた。 Moreover, when only the clutch lever is operated, the clutch lever moves idly and absorbs the operating force, making it less likely to be deformed or damaged even if the clutch lever is operated incorrectly, making it less likely to break down. It became a thing.
さらには、連動部材及び連動操作具の摺動式に
より、連動構成の簡略化ができ、経済連で有利に
できた。 Furthermore, since the interlocking member and the interlocking operation tool are sliding, the interlocking structure can be simplified, which is advantageous in economic terms.
次に実施例を示す。 Next, examples will be shown.
第６図に示すように、左右一対の前車輪１，１
及び後車輪２，２が取付けられ、かつ、刈刃３が
縦軸芯周りで回動するように内装された刈刃ハウ
ジング４の上部に後車輪２及び刈刃３を駆動する
ためのエンジンＥを取付けると共に、刈切ハウジ
ング４の後部に操縦ハンドル５及び集積容器６を
付設して、自走式の走行型芝刈り機を構成してお
ある。 As shown in Fig. 6, a pair of left and right front wheels 1, 1
And an engine E for driving the rear wheels 2 and the cutting blade 3 is installed in the upper part of the cutting blade housing 4, to which the rear wheels 2, 2 are attached and the cutting blade 3 is internally installed so that it rotates around the vertical axis. At the same time, a control handle 5 and a collection container 6 are attached to the rear of the cutting housing 4 to form a self-propelled traveling lawn mower.
第１図ないし第３図に示すように、刈刃３に対
するエンジン動力の伝達を入り切りするように刈
刃ハウジング４に内装された刈刃用クラツチＣに
レリーズワイヤ７を介して連結してた刈刃用クラ
ツチＣの操作部８を、第５図に示す如き形状のク
ラツチレバー９、レバー枢支ピン１０、レバー取
付部材１１を介してクラツチレバー９と同一の軸
芯P1の周りで相対揺動するように操縦ハンドル
５取付けると共に、操作部８の基端部８ａがレバ
ー取付部材１１の下向き面箇所に相当した下降位
置DNに操作部８がなると刈刃用クラツチＣが自
己復元力によつて切り状態になるように構成して
ある。クラツチレバー９にこれの一端に一体揺動
するように付勢した取付アーム１２を介してロツ
ド製の連動部材１４を取付けてある。この連動部
材１４はクラツチレバー９と操作部８とを解除自
在に連動させるものであり、第３図に仮想線で示
す如く先端側が操作部８の係合用孔８ｂに入り込
んで操作部８と取付アーム１２とが一体に揺動す
るように操作部８に係合した作用位置と、実線で
示す如く先端側が操作部８から離脱して操作部８
と取付アーム１２との相対揺動が可能なように前
記係合を解除した作用解除位置とに、前記軸芯
P1に沿う方向の摺動によつて切換わるように構
成してある。連動部材１４にこれを切換え操作す
るためのレバー式の連動操作具１５を一体形成に
よつて一体に摺動するように連設し、この連設操
作具１５のクラツチレバー９に対する取付部１５
ａに作用させたスプリング１６により連動部材１
４が前記作用解除位置に切換え付勢されるように
構成すると共に、取付アーム１２の遊端側と、操
作部８に第４図に示す如く備えてあるストツパー
部８ｃが接当するところの位置関係にクラツチレ
バー９と操作部８とがある状態においてのみ連動
部材１４の先端側と係合用孔８ｂとが合致するよ
うに構成してあり、そして、このことと、操作部
８が刈刃用クラツチＣの切り復元力のために前記
下降位置DNに揺動付勢されることとにより、下
降位置DNにある操作部８に対して前記位置完関
係になるところの第１図に示す如きクラツチ切り
位置（OFF）にクラツチレバー９がある状態に
おいてのみ、連動操作具１５をクラツチレバー９
の縦杆部分９ａと離間した連動切り位置（OUT）
から前記縦杆部分９ａに近接した連動入り位置
（IN）に人為摺動操作することで連動部材１４を
作用解除位置から作用位置に切換え操作できて、
クラツチレバー９と操作部８とを連動状態にでき
るように構成してある。そして、この連動状態で
クラツチレバー９を第２図に示す如く遊端側が操
縦ハンドル５の握り部５ａに近接して操縦ハンド
ル５との共握り操作が可能となるクラツチ入り位
置（ON）に軸芯P1の周りで切換え揺動操作する
ことにより、操作部８が上昇位置（UP）になつ
て刈刃用クラツチＣが入りになるように、かつ、
この際には、刈刃用クラツチＣの切り復元力、ク
ラツチレバー９の人為操作、及び、係合孔８ｂの
径が連動部材１４の外径より若干大であることの
夫々に起因し、操作部８と取付アーム１２とが若
干相対揺動して連動部材１４の外止め突起１４ａ
と操作部８とが接当することにより、連動操作具
１５を連動入り位置（IN）に維持する人為操作
を要することなく、連動部材１４がスプリング１
６に作用力にかかわらず作用位置に維持されるよ
うにしてある。そして、クラツチレバー９をクラ
ツチ入り位置（ON）に維持する握り操作を解除
すると、クラツチレバー９がクラツチ切り位置
（OFF）に、かつ、操作部８が下降位置（ON）
に夫々刈刃用クラツチＣの切り復元力のために自
動的に戻されると共に、連動部材１４がスプリン
グ１６のために作用解除位置に自動的に切換わる
ように構成してある。 As shown in FIGS. 1 to 3, the mower is connected via a release wire 7 to a mower blade clutch C installed in the mower housing 4 so as to turn on and off the transmission of engine power to the mower blade 3. The operating portion 8 of the blade clutch C is relatively oscillated around the same axis P1 as the clutch lever 9 via the clutch lever 9, lever pivot pin 10, and lever mounting member 11 shaped as shown in FIG. When the operating handle 5 is attached so as to move, and the base end 8a of the operating section 8 is in the lowered position DN corresponding to the downward facing portion of the lever mounting member 11, the cutting blade clutch C is activated by its self-restoring force. It is configured so that it is in a straight-cut state. An interlocking member 14 made of rod is attached to one end of the clutch lever 9 via a mounting arm 12 which is biased so as to swing integrally therewith. This interlocking member 14 releasably interlocks the clutch lever 9 and the operating section 8, and its distal end enters into the engagement hole 8b of the operating section 8 and is attached to the operating section 8, as shown by the imaginary line in FIG. The operating position where the arm 12 is engaged with the operating section 8 so as to swing together, and the operating position where the distal end side is detached from the operating section 8 as shown by the solid line and the operating section 8 is closed.
and the action release position where the engagement is released so that relative rocking between the mounting arm 12 and the mounting arm 12 is possible.
It is configured to be switched by sliding in the direction along P1 . A lever-type interlocking operating tool 15 for switching and operating the interlocking member 14 is integrally formed so as to slide together, and a mounting portion 15 of this interlocking operating tool 15 to the clutch lever 9 is provided.
The interlocking member 1 is moved by the spring 16 acting on a.
4 is configured so that it is switched to the action release position and is biased, and the position where the free end side of the mounting arm 12 and the stopper part 8c provided on the operating part 8 as shown in FIG. The distal end side of the interlocking member 14 and the engagement hole 8b are configured to match only when the clutch lever 9 and the operating section 8 are in a relationship with each other. As shown in FIG. 1, the clutch C is oscillated to the lowered position DN due to the restoring force of the clutch C, so that the clutch C assumes the perfect relationship with the operating portion 8 at the lowered position DN. Only when the clutch lever 9 is in the off position (OFF) can the interlocking operating tool 15 be moved to the clutch lever 9.
Interlocking cutting position (OUT) separated from the vertical rod part 9a of
The interlocking member 14 can be switched from the deactivation position to the activation position by manually sliding the interlock member 14 from the deactivation position to the interlocking position (IN) close to the vertical rod portion 9a,
The clutch lever 9 and the operating section 8 are configured to be in an interlocked state. In this interlocking state, the clutch lever 9 is pivoted to the clutch engaged position (ON) where the free end is close to the grip portion 5a of the control handle 5 and can be gripped together with the control handle 5, as shown in FIG. By performing a switching and swinging operation around the core P1 , the operating portion 8 is placed in the up position (UP) and the cutting blade clutch C is placed in the engaged position, and
In this case, due to the cutting restoring force of the cutting blade clutch C, the manual operation of the clutch lever 9, and the fact that the diameter of the engagement hole 8b is slightly larger than the outer diameter of the interlocking member 14, the operation The part 8 and the mounting arm 12 swing slightly relative to each other, and the external retaining protrusion 14a of the interlocking member 14
By contacting the operating section 8 with the operating section 8, the interlocking member 14 is moved to the spring 1 without requiring any manual operation to maintain the interlocking operating tool 15 in the interlocking position (IN).
6, it is maintained in the working position regardless of the acting force. When the grip operation that maintains the clutch lever 9 in the clutch engaged position (ON) is released, the clutch lever 9 goes to the clutch disengaged position (OFF) and the operating section 8 goes to the lowered position (ON).
The mowing blade clutch C is automatically returned to its restoring force due to the cutting force, and the interlocking member 14 is automatically switched to the release position due to the spring 16.
要するに、クラツチレバー９をクラツチ入り位
置（ON）に切換える操作のみをしただけでは刈
刃用クラツチＣは入りにならず、連動操作具１５
をして連動部材１４を作用位置に切換える操作
と、クラツチレバー９をクラツチ入り位置
（ON）に切換える操作との両操作をすることに
より始めて刈刃用クラツチＣが入りになつて刈刃
３が駆動されるのである。そして、クラツチ入り
位置（ON）に操作したクラツチレバー９を操縦
ハンドル５と共に握り操作することにより、刈刃
用クラツチＣを入り状態に維持しながら作業する
のである。 In short, simply by switching the clutch lever 9 to the clutch engaged position (ON), the cutting blade clutch C will not be engaged, and the interlocking operation tool 15 will not be engaged.
By performing both the operation of switching the interlocking member 14 to the operating position and the operation of switching the clutch lever 9 to the clutch engaged position (ON), the mower blade clutch C is engaged and the mower blade 3 is activated. It is driven. By gripping and operating the clutch lever 9, which has been moved to the clutch engaged position (ON), together with the control handle 5, work is carried out while maintaining the cutting blade clutch C in the engaged state.
尚、第１図及び第２図に示す操作レバー１７は
走行用クラツチ（図示せず）を操作するためのも
のである。 The operating lever 17 shown in FIGS. 1 and 2 is for operating a traveling clutch (not shown).
尚、操作部８とクラツチレバー９の連動機構を
構成するに、連動操作具をクラツチレバーとの共
握りで操作することによつて連動部材を作用位置
に維持するようにして実施してもよい。尚、特許
請求の範囲の項の図面との対照を便利にする為に
符号を記すが、該記入により本発明は添付図面の
構造に限定されるものではない。 Note that the interlocking mechanism between the operating portion 8 and the clutch lever 9 may be configured such that the interlocking member is maintained at the operating position by operating the interlocking operating tool with the clutch lever together. . Incidentally, although reference numerals are written for convenience of comparison with the drawings in the claims section, the present invention is not limited to the structure of the attached drawings by these markings.
図面は本発明に係る歩行型芝刈り機のクラツチ
操作構造の実施例を示し、第１図及び第２図はク
ラツチレバー配設部の側面図、第３図は連動機構
の後面図、第４図は操作部の断面図、第５図はク
ラツチレバーの後面図、第６図は歩行型芝刈り機
全体の側面図である。
８……操作部、９……クラツチレバー、１４…
…連動部材、１５……連動操作具、１６……スプ
リング、Ｃ……刈刃用クラツチ、P1……軸芯。
The drawings show an embodiment of the clutch operation structure for a walk-behind lawn mower according to the present invention, and FIGS. 1 and 2 are side views of the clutch lever installation part, FIG. 3 is a rear view of the interlocking mechanism, and FIG. 5 is a rear view of the clutch lever, and FIG. 6 is a side view of the entire walk-behind lawn mower. 8...Operation unit, 9...Clutch lever, 14...
...Interlocking member, 15...Interlocking operating tool, 16...Spring, C...Mower blade clutch, P1 ...Axis center.
Claims (1)
ラツチレバー９とを同一の軸芯P1の周りで相対
揺動自在に取付け、前記操作部８と前記クラツチ
レバー９との連動部材１４を前記軸芯P1に沿つ
た摺動により、前記操作部８に係合した作用位置
と、前記操作部８から離脱した作用解除位置とに
切換わる状態で前記クラツチレバー９に取付け、
前記連動部材１４を前記作用解除位置に付勢する
スプリング１６を設けると共に、前記連動部材１
４を前記作用位置に人為操作する連動操作具１５
を前記連動部材１４に一体摺動自在に連設してあ
る歩行型芝刈り機のクラツチ操作構造。1. The operating section 8 of the cutting blade clutch C and the manual operating clutch lever 9 are mounted so as to be relatively swingable around the same axis P1 , and the interlocking member 14 between the operating section 8 and the clutch lever 9 is attached to the clutch lever 9 in a state where it can be switched between an operating position in which it engages with the operating part 8 and an action release position in which it disengages from the operating part 8 by sliding along the axis P1 ;
A spring 16 is provided to urge the interlocking member 14 to the deactivation position, and the interlocking member 1
an interlocking operation tool 15 for manually operating the device 4 to the operating position;
A clutch operation structure for a walk-behind lawn mower, in which the clutch is integrally and slidably connected to the interlocking member 14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30431887A JPH01144108A (en) | 1987-11-30 | 1987-11-30 | Clutch operating structure for walk type mowing machine |
| US07/274,116 US4882897A (en) | 1987-11-28 | 1988-11-21 | Clutch control structure for a walking operator type lawn mower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30431887A JPH01144108A (en) | 1987-11-30 | 1987-11-30 | Clutch operating structure for walk type mowing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01144108A JPH01144108A (en) | 1989-06-06 |
| JPH0524526B2 true JPH0524526B2 (en) | 1993-04-08 |
Family
ID=17931584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30431887A Granted JPH01144108A (en) | 1987-11-28 | 1987-11-30 | Clutch operating structure for walk type mowing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01144108A (en) |
-
1987
- 1987-11-30 JP JP30431887A patent/JPH01144108A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01144108A (en) | 1989-06-06 |
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