JPH0237Y2 - - Google Patents
Info
- Publication number
- JPH0237Y2 JPH0237Y2 JP2749583U JP2749583U JPH0237Y2 JP H0237 Y2 JPH0237 Y2 JP H0237Y2 JP 2749583 U JP2749583 U JP 2749583U JP 2749583 U JP2749583 U JP 2749583U JP H0237 Y2 JPH0237 Y2 JP H0237Y2
- Authority
- JP
- Japan
- Prior art keywords
- wire member
- cutting wire
- rotating body
- cutting
- elongated hole
- 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 claims description 7
- 239000000057 synthetic resin Substances 0.000 claims description 7
- 244000025254 Cannabis sativa Species 0.000 claims 1
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/416—Flexible line cutters
- A01D34/4166—Mounting or replacement of the lines
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
- Soil Working Implements (AREA)
Description
【考案の詳細な説明】
本考案は、草刈機に使用する可撓性を有する合
成樹脂製の切断用線部材の取付けに関するもので
ある。[Detailed Description of the Invention] The present invention relates to the attachment of a flexible synthetic resin cutting wire member used in a lawn mower.
従来の草刈機において、刈刃として用いる可撓
性を有する合成樹脂製の切断用線部材の種類およ
び取付け装置を第１７図、第１８図および第１９
図に示す。 17, 18 and 19 show the types and attachment devices of flexible synthetic resin cutting wire members used as cutting blades in conventional lawn mowers.
As shown in the figure.
第１７図に示すものは、回転体１９中にナイロ
ン糸などで代表される糸刈刃２０をボビン２１に
巻いた状態で収納しておき、芝刈り作業などによ
り摩耗した分だけ糸刈刃２０を引き出して使用す
るものである。この糸刈刃取付け装置は、回転体
１９が高速回転すると遠心力により糸刈刃２０が
飛び出してしまうため、これを防ぐのに糸刈刃２
０の飛び出し防止機構が必要となり、草刈機の構
成が複雑となり、さらに糸刈刃２０の引き出し固
定に手間がかかるとともに、使用しない糸刈刃２
０を回転させるため余分な動力を必要とする問題
がある。 In the device shown in FIG. 17, a thread cutting blade 20, typically made of nylon thread, is stored in a rotary body 19 in a state wound around a bobbin 21, and the thread cutting blade 20 is adjusted to the extent that it is worn out due to lawn mowing work, etc. It is used by drawing out the information. This thread cutting blade attachment device is designed to prevent thread cutting blades 20 from flying out due to centrifugal force when the rotating body 19 rotates at high speed.
0 is required to prevent the mower from popping out, which complicates the structure of the mower.Furthermore, it takes time and effort to pull out and fix the thread cutting blade 20, and the thread cutting blade 2 that is not in use is
There is a problem in that extra power is required to rotate the 0.
第１８図に示すものは、回転体２２の直径方向
に貫通した糸刈刃収納穴２３を設け、回転体２２
の底面から糸刈刃収納穴２３に直交する糸刈刃抑
えネジ２４を設け、該糸刈刃抑えネジ２４の先端
で糸刈刃２５を固定するものである。この糸刈刃
取付け装置は、糸刈刃２５の取付けに際し、糸刈
刃抑えネジ２４の操作に手間がかかるとともにバ
ランスをとるための回転体２２の半径方向の位置
決めが困難である。 What is shown in FIG.
A thread cutting blade holding screw 24 is provided from the bottom surface of the thread cutting blade holding hole 23 perpendicularly to the thread cutting blade storage hole 23, and the thread cutting blade 25 is fixed at the tip of the thread cutting blade holding screw 24. In this thread cutting blade attachment device, when mounting the thread cutting blade 25, it takes time and effort to operate the thread cutting blade holding screw 24, and it is difficult to position the rotating body 22 in the radial direction for maintaining balance.
第１９図に示すものは、回転体２６に開設した
挿入口２７を設け、該挿入口２７と連通する導出
口２８を設け、糸刈刃３２は挿入口２７より挿入
し、導出口２８より引き出すものである。この場
合、糸刈刃３２が飛び出さないように、糸刈刃３
２の一端に金属製などのカシメ部２９と、抜け止
め部３０を備えているキヤツプ３１を設け、前記
カシメ部２９に糸刈刃３２の一端を挿入してカシ
メ、前記抜け止め部３０が回転体２６の挿入口２
７と係合して飛び出しを防いでいる。この糸刈刃
３２は、キヤツプ３１と糸刈刃３２より構成さ
れ、その結合がカシメによるため、結合状態が不
安定であるとともに、カシメ作業を必要とするた
めコスト高となつている。 The one shown in FIG. 19 is provided with an insertion port 27 opened in the rotating body 26, and an outlet 28 communicating with the insertion port 27. It is something. In this case, to prevent the thread cutting blade 32 from flying out,
A cap 31 is provided at one end of the cap 2, which is provided with a caulking part 29 made of metal or the like and a retaining part 30, and one end of the thread trimming blade 32 is inserted into the caulking part 29 and crimped, and the retaining part 30 is rotated. Insertion port 2 of body 26
7 and prevents it from popping out. The thread cutting blade 32 is composed of a cap 31 and a thread cutting blade 32, which are joined together by caulking, resulting in an unstable joint state and a high cost due to the necessity of caulking work.
本考案は、上記した従来技術の欠点をなくし、
糸刈刃の取替作業が簡単でしかも小動力で駆動で
き、バランス取り不用な糸刈刃取付け装置を低価
格で提供しようとするものである。 The present invention eliminates the drawbacks of the prior art described above,
To provide, at a low price, a thread cutting blade mounting device that allows easy replacement of thread cutting blades, can be driven with small power, and does not require balancing.
すなわち、本考案は、草刈機に用いられる可撓
性を有する合成樹脂製の切断用線部材を射出成形
などにより定形に成形し、かつ、切断用線部材が
可撓性を有する合成樹脂であるため弾性変形量の
範囲が大きい点と回転体に取付けて高速回転させ
た時、遠心力により切断用線部材の軸方向に張力
がかかる点に着目し、回転体に簡単に取付き、回
転体が高速で回転した時さらにしつかりと固定さ
れるよう切断用線部材と回転体の切断用線部材の
取付け部の関係を工夫したものである。 That is, in the present invention, a cutting wire member made of a flexible synthetic resin used in a lawn mower is molded into a regular shape by injection molding or the like, and the cutting wire member is made of a flexible synthetic resin. Therefore, we focused on the fact that the range of elastic deformation is large and that when attached to a rotating body and rotated at high speed, tension is applied in the axial direction of the cutting wire member due to centrifugal force. The relationship between the cutting wire member and the attachment portion of the cutting wire member of the rotating body is devised so that the cutting wire member is more securely fixed when the rotating body rotates at high speed.
以下、本考案の実施例を適用した草刈機を、第
１図から第１１図に示す。 Hereinafter, a lawn mower to which an embodiment of the present invention is applied is shown in FIGS. 1 to 11.
さお状のハンドル１の上端に二ツ割り方式のハ
ウジング(a)，(b)２，３を配し、該ハウジング(a)(b)
２，３内に電源としての蓄電池４、蓄電池を充電
するための充電器部５、起動停止用のスイツチ６
を内蔵している。一方、前記さお状のハンドル１
の下端には、二ツ割り方式のモータハウジング
(a)，(b)７，８を配し、該モータハウジング(a)，(b)
７，８内に原動機としてのモータ９を配し、前記
蓄電池４より前記さお状のハンドル１の中空穴１
０に配設されるコード１１により給電される。ま
た、前記モータ９に直結し駆動され回転する回転
体１２を配し、該回転体１２に可撓性を有する合
成樹脂製の切断用線部材１３を取付け、前記回転
体１２を前記蓄電池４、スイツチ６、コード１
１、モータ９などの係合により高速回転させ、前
記切断用線部材１３の周方向回転力によつて芝な
どを刈込むものである。 Two-split housings (a), (b) 2 and 3 are arranged on the upper end of the rod-shaped handle 1, and the housings (a), (b)
2, 3 includes a storage battery 4 as a power source, a charger section 5 for charging the storage battery, and a switch 6 for starting and stopping.
Built-in. On the other hand, the rod-shaped handle 1
At the bottom end of the is a two-piece motor housing.
(a), (b) 7, 8 are arranged, and the motor housing (a), (b)
A motor 9 as a prime mover is disposed within 7 and 8, and the hollow hole 1 of the rod-shaped handle 1 is connected to the storage battery 4.
Power is supplied by a cord 11 placed at 0. Further, a rotating body 12 that is directly connected to the motor 9 and driven and rotated is disposed, a flexible synthetic resin cutting wire member 13 is attached to the rotating body 12, and the rotating body 12 is connected to the storage battery 4, switch 6, code 1
1. The cutting wire member 13 is rotated at high speed by engagement with the motor 9, and lawns or the like are cut by the rotational force in the circumferential direction of the cutting wire member 13.
前記切断用線部材１３の一端に長穴部１４を形
成し、該長穴部１４の内側には凸状係止部１５を
２箇所形成している。一方、前記回転体１２の前
記切断用線部材１３の取付部を、前記切断用線部
材１３に形成されている長穴部１４および凸状係
止部１５が係合着脱し得るように中空部１７を成
形した中空凸部１６を形成している。 An elongated hole portion 14 is formed at one end of the cutting wire member 13, and two convex locking portions 15 are formed inside the elongated hole portion 14. On the other hand, the attachment part of the cutting wire member 13 of the rotating body 12 is connected to a hollow part so that the elongated hole part 14 and the convex locking part 15 formed in the cutting wire member 13 can be engaged and detached. 17 is formed into a hollow convex portion 16.
前記切断用線部材１３を前記回転体１２に取付
けるには、該回転体１２の中空凸部１６に前記切
断用線部材１３の長穴部１４を押し込むことによ
り、該長穴部１４が第９図に示すように弾性変形
して嵌挿され、該長穴部１４の内側に形成されて
いる凸状係止部１５が、前記回転体１２の中空凸
部１６の中空部１７と係合して抜け止めされる。
その後、前記切断用線部材１３の糸刈刃部３３を
前記回転体１２の直径方向に設けられている導出
口１８に挿通する。この過程を第９図から第１１
図に示しＥ＞Ｆ＞Ｇにより解説される。 In order to attach the cutting wire member 13 to the rotary body 12, the long hole portion 14 of the cutting wire member 13 is pushed into the hollow convex portion 16 of the rotary body 12, so that the long hole portion 14 is in the ninth position. As shown in the figure, the convex locking part 15, which is elastically deformed and inserted and formed inside the elongated hole part 14, engages with the hollow part 17 of the hollow convex part 16 of the rotating body 12. It is prevented from falling out.
Thereafter, the thread cutting blade portion 33 of the cutting wire member 13 is inserted into the outlet 18 provided in the diametrical direction of the rotating body 12. This process is shown in Figures 9 to 11.
It is shown in the figure and explained by E>F>G.
一方、前記切断用線部材１３の取外しは、該切
断用線部材１３の糸刈刃部３３を前記導出口１８
より内側に引き出して、そのまま引張ることによ
り、前記切断用線部材１３の長穴部１４が弾性変
形して、前記回転体１２の中空凸部１６より離脱
できる。 On the other hand, when removing the cutting wire member 13, the thread cutting blade portion 33 of the cutting wire member 13 is removed from the outlet 18.
By pulling it out further inward and pulling it as it is, the elongated hole portion 14 of the cutting wire member 13 is elastically deformed and can be separated from the hollow convex portion 16 of the rotating body 12.
なお、以上の実施例の切断用線部材１３の長穴
部１４の内側に２箇所形成している凸状係止部１
５は、第１２図から第１６図に示す構造とするこ
とも可能である。 Note that the convex locking portions 1 are formed at two locations inside the elongated hole portion 14 of the cutting wire member 13 in the above embodiment.
5 may also have the structure shown in FIGS. 12 to 16.
以上のように本考案によれば、
(1) 切断用線部材１３を射出成形などにより定形
に成形したため、切断用線部材の長さを一定に
することができ、従つて切断用線部材の長さを
調節する必要がなく、バランス取り不要とする
ことができる。さらに定形であるため、小動力
で駆動することができる。 As described above, according to the present invention, (1) Since the cutting wire member 13 is molded into a regular shape by injection molding or the like, the length of the cutting wire member can be made constant; There is no need to adjust the length, and no balancing is required. Furthermore, since it has a fixed shape, it can be driven with small power.
(2) 切断用線部材１３の一端に長穴部を設け、さ
らに凸状係止を設けて可撓性を有する合成樹脂
製で切断用線部材を成形したため、切断用線部
材の取付け、取外しがきわめて簡単に行なえる
とともに、簡単な構造で、かつ低価格で提供す
ることができる。さらに、回転中は遠心力によ
り切断用線部材の軸方向に張力が働くため、長
穴部が変形し中空凸部にしつかりと固定され飛
び出し防止することができる。(2) Since a long hole is provided at one end of the cutting wire member 13 and a convex lock is provided and the cutting wire member is molded from a flexible synthetic resin, it is easy to attach and remove the cutting wire member. can be performed extremely easily, and can be provided with a simple structure and at a low price. Furthermore, since tension is applied in the axial direction of the cutting wire member due to centrifugal force during rotation, the elongated hole portion is deformed and firmly fixed to the hollow convex portion to prevent it from popping out.
等の効果を奏することができる。It is possible to achieve the following effects.
第１図は本考案の実施例を適用した草刈機の一
側面から見た外観側面図、第２図は第１図のＡ−
Ａ線断面図、第３図は切断用線部材の平面図、第
４図は第３図のＢ−Ｂ線拡大断面図、第５図は回
転体の斜視図、第６図は回転体の縦断側面図、第
７図は第６図のＣ−Ｃ線断面図、第８図は第６図
のＤ矢視図、第９図は第７図に切断用線部材を押
し込もうとしている拡大断面図、第１０図は第７
図に切断用線部材を取付けた状態の拡大断面図、
第１１図は第１０図の状態を高速回転させた場合
の取付け状態を示す拡大断面図、第１２図、第１
３図、第１４図、第１５図、第１６図は切断用線
部材の応用変形例を示す各々の外観図、第１７
図、第１８図、第１９図は各々従来の切断用線部
材とその取付装置を示す縦断側面図である。
図においては、１はハンドル、９はモータ、１
２は回転体、１３は切断用線部材、１４は長穴
部、１５は凸状係止部、１６は中空凸部、１７は
中空部である。
Fig. 1 is an external side view of a mower to which an embodiment of the present invention is applied, as seen from one side, and Fig. 2 is an A--A in Fig. 1.
3 is a plan view of the cutting wire member, FIG. 4 is an enlarged sectional view taken along line B-B in FIG. 3, FIG. 5 is a perspective view of the rotating body, and FIG. 6 is a plan view of the cutting wire member. A vertical side view, FIG. 7 is a cross-sectional view taken along the line C-C in FIG. 6, FIG. 8 is a view taken in the direction of arrow D in FIG. 6, and FIG. 9 is about to push the cutting wire member into FIG. 7. Enlarged sectional view, Figure 10 is the 7th
An enlarged sectional view with the cutting wire member attached to the figure,
Fig. 11 is an enlarged sectional view showing the installation state when the state shown in Fig. 10 is rotated at high speed;
3, 14, 15, and 16 are external views showing applied modifications of the cutting wire member, and 17.
18 and 19 are longitudinal sectional side views showing a conventional cutting wire member and its attachment device, respectively. In the figure, 1 is a handle, 9 is a motor, 1
2 is a rotating body, 13 is a cutting wire member, 14 is an elongated hole, 15 is a convex locking part, 16 is a hollow convex part, and 17 is a hollow part.
Claims (1)
て駆動され回転する回転体１２に可撓性を有する
合成樹脂性の切断用線部材１３を取付けて芝など
を切断する草刈機において、前記切断用線部材１
３の一端に長穴部１４および該長穴部１４の内側
に凸状係止部１５を形成するとともに、前記回転
体１２の前記切断用線部材１３の取付け部を、前
記回転体１２の下面から下方に突出しかつ前記切
断用線部材１３の前記長穴部１４が嵌合可能な凸
部１６となし、前記凸部１６は前記凸状係止部１
５が係合可能な中空部１７を有していることを特
徴とする草刈機の刈刃取り付け装置。 In the mower for cutting grass, etc., a cutting line member 13 made of flexible synthetic resin is attached to the tip of a rod-shaped handle 1 on a rotary body 12 driven and rotated by a motor 9. Cutting wire member 1
3, an elongated hole portion 14 and a convex locking portion 15 are formed inside the elongated hole portion 14, and the attachment portion of the cutting wire member 13 of the rotating body 12 is connected to the lower surface of the rotating body 12. The protrusion 16 protrudes downward from the cutting wire member 13 and into which the elongated hole 14 of the cutting wire member 13 can fit.
A mowing blade attachment device for a lawn mower, characterized in that the mower 5 has an engageable hollow portion 17.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2749583U JPS59133023U (en) | 1983-02-25 | 1983-02-25 | Mower blade attachment device |
| DE19843406801 DE3406801C2 (en) | 1983-02-25 | 1984-02-24 | Cutting blade assembly for a lawn cutting machine containing a drive motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2749583U JPS59133023U (en) | 1983-02-25 | 1983-02-25 | Mower blade attachment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59133023U JPS59133023U (en) | 1984-09-06 |
| JPH0237Y2 true JPH0237Y2 (en) | 1990-01-05 |
Family
ID=12222715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2749583U Granted JPS59133023U (en) | 1983-02-25 | 1983-02-25 | Mower blade attachment device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS59133023U (en) |
| DE (1) | DE3406801C2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014117249A (en) * | 2012-12-19 | 2014-06-30 | Makita Corp | Working machine having operation rod |
| JP2016059352A (en) * | 2014-09-19 | 2016-04-25 | 日立工機株式会社 | Portable operation implement |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8900400U1 (en) * | 1989-01-16 | 1989-10-26 | Gutbrod-Werke GmbH, 6601 Bübingen | Lawn mower with a screwless attachment of the blades on the circumference of a rotating disc |
| JP3560801B2 (en) * | 1998-01-30 | 2004-09-02 | シャープ株式会社 | Driving force transmission member connection structure |
| DE202020100259U1 (en) | 2020-01-20 | 2020-03-12 | Jan Jacob | Clamping mechanism of a cutting knife for grass trimmers |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4107841A (en) * | 1977-04-22 | 1978-08-22 | True Temper Corporation | Weed cutter construction |
-
1983
- 1983-02-25 JP JP2749583U patent/JPS59133023U/en active Granted
-
1984
- 1984-02-24 DE DE19843406801 patent/DE3406801C2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014117249A (en) * | 2012-12-19 | 2014-06-30 | Makita Corp | Working machine having operation rod |
| JP2016059352A (en) * | 2014-09-19 | 2016-04-25 | 日立工機株式会社 | Portable operation implement |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3406801C2 (en) | 1986-04-17 |
| JPS59133023U (en) | 1984-09-06 |
| DE3406801A1 (en) | 1984-08-30 |
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