JPH0238609Y2 - - Google Patents
Info
- Publication number
- JPH0238609Y2 JPH0238609Y2 JP1984047813U JP4781384U JPH0238609Y2 JP H0238609 Y2 JPH0238609 Y2 JP H0238609Y2 JP 1984047813 U JP1984047813 U JP 1984047813U JP 4781384 U JP4781384 U JP 4781384U JP H0238609 Y2 JPH0238609 Y2 JP H0238609Y2
- Authority
- JP
- Japan
- Prior art keywords
- crank
- blade
- drive gear
- housing
- fitted
- 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
- 230000000694 effects Effects 0.000 description 5
- 230000037431 insertion Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013138 pruning Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Harvester Elements (AREA)
Description
【考案の詳細な説明】
この考案は樹木の剪定や生垣の整形等に使用さ
れるヘツジトリマーにおける刃物駆動装置に関す
る。[Detailed Description of the Invention] This invention relates to a blade drive device in a hedge trimmer used for tree pruning, hedge shaping, etc.
従来のヘツジトリマーでは刃物を往復駆動する
ために、第１図に示すように、駆動用ギヤg1の上
下面に偏心盤h1，h1を一体状に突設したクランク
機構や、第２図に示すように、軸ｊにギヤg2およ
び上下１対の偏心盤h2，h2を組付けたクランク機
構が採用されていたが、前者の場合には一部の破
損や損耗で機構全体が使用不能となりかつ金属製
であるためコスト高となる欠点があり、また、後
者の場合には組立てが煩雑となる欠点があつた。 In conventional hedge trimmers, in order to reciprocate the cutter, a crank mechanism is used, as shown in Fig. 1, in which eccentric discs h 1 and h 1 are integrally protruded from the upper and lower surfaces of the driving gear g 1 , and a crank mechanism is used, as shown in Fig. 2. As shown in Fig. 2, a crank mechanism was used in which a gear g 2 and a pair of upper and lower eccentric discs h 2 and h 2 were attached to the shaft j, but in the case of the former, the entire mechanism could be destroyed due to damage or wear and tear on one part. However, since it is made of metal, it becomes unusable and is expensive, and in the case of the latter, it is complicated to assemble.
本考案の目的は組立てが簡単で破損や損耗に対
処しやすいヘツジトリマーにおける刃物駆動装置
を提供することであつて、本考案の刃物駆動装置
はハウジング内に垂支された主軸には、前記ハウ
ジングの下端に取着した上下ガイド板間に挟持さ
れた上刃と下刃とを差動状往復駆動するために前
記上刃の基端部と前記下刃の基端部とに嵌挿され
て180゜の位相差でそれぞれ偏心回転するように一
体状に並設された上偏心盤と下偏心盤とを有する
クランクと、このクランク上に設置された駆動ギ
ヤとをそれぞれ遊転可能に嵌装し、前記駆動ギヤ
と前記クランクとをこのクランクのセンタ孔の孔
縁から半径方向へ離隔した位置で前記駆動ギヤと
前記クランクとを分離可能に結合する結合手段に
よつて共転可能に連繋するとともに、前記駆動ギ
ヤと前記クランクとを、前記下ガイド板によつて
下方に対して抜け止めした構成を有する。 An object of the present invention is to provide a blade drive device for a hedge trimmer that is easy to assemble and is easy to deal with breakage and wear and tear. A blade 180 is inserted into the base end of the upper blade and the base end of the lower blade in order to differentially reciprocate the upper blade and the lower blade held between the upper and lower guide plates attached to the lower end. A crank having an upper eccentric disk and a lower eccentric disk that are integrally arranged side by side so as to rotate eccentrically with a phase difference of .degree., and a drive gear installed on this crank are fitted so that they can rotate freely. , the drive gear and the crank are coupled so as to be rotatable together by a coupling means that detachably couples the drive gear and the crank at a position spaced apart in the radial direction from the edge of the center hole of the crank; , the drive gear and the crank are prevented from coming off downward by the lower guide plate.
続いて、本考案の一実施例を図面にしたがつて
説明すると、図中、１はヘツジトリマー本体Ｈの
ハウジング、２はハウジング１内に対し下向き状
に収納されたモータ、３はスイツチ４を介してモ
ータ２を起動および停止操作するためのスイツチ
レバー、５はモータ２のモータ軸２ａ下端に嵌着
されたピニオン、６は段付き中間ギヤであつて、
上段ギヤ６ａがピニオン５と噛合つて回転駆動さ
れる。 Next, an embodiment of the present invention will be described with reference to the drawings. In the drawing, 1 is the housing of the hedge trimmer main body H, 2 is the motor housed in the housing 1 in a downward direction, and 3 is the motor connected through the switch 4. 5 is a pinion fitted to the lower end of the motor shaft 2a of the motor 2; 6 is a stepped intermediate gear;
The upper gear 6a meshes with the pinion 5 and is driven to rotate.
７，８は切断動作可能に上下並装された上刃お
よび下刃であつて、ハウジング１の下端に対し平
行状に取着されて前方へ延出された上下のガイド
板９，９間に対し前後方向へのスライド可能に挾
持され、上刃７および下刃８の前部両側にはそれ
ぞれ刃部が形成される一方、それぞれ幅が拡張さ
れた上刃７の基端部７ａおよび下刃８の基端部８
ａにはクランク孔１０，１１がそれぞれ開設され
ている。 Reference numerals 7 and 8 denote an upper blade and a lower blade which are arranged vertically in parallel so as to be capable of cutting operations, and are installed between upper and lower guide plates 9 and 9 which are attached parallel to the lower end of the housing 1 and extend forward. On the other hand, the upper blade 7 and the lower blade 8 are sandwiched so as to be slidable in the front-rear direction, and blade portions are formed on both sides of the front sides of the upper blade 7 and the lower blade 8, while the proximal end 7a of the upper blade 7 and the lower blade are respectively expanded in width. Base end part 8 of 8
Crank holes 10 and 11 are respectively opened in a.
１３はハウジング１内に垂支された主軸であつ
て、その下端部は下ガイド板９に貫挿支持されて
いる。１２は主軸１３に遊転可能に嵌装された駆
動ギヤであつて、中間ギヤ６の下段ギヤ６ｂに噛
合つて定常回転され、その軸孔１２ａの両側には
挿入孔１２ｂ，１２ｂがそれぞれ貫設されてい
る。 Reference numeral 13 denotes a main shaft suspended within the housing 1, the lower end of which is inserted into and supported by the lower guide plate 9. Reference numeral 12 denotes a drive gear fitted to the main shaft 13 so as to be freely rotatable, and is constantly rotated by meshing with the lower gear 6b of the intermediate gear 6. Insertion holes 12b and 12b are respectively formed through both sides of the shaft hole 12a. has been done.
なお、上記ピニオン５、中間ギヤ６および駆動
ギヤ１２はそれぞれ合成樹脂材で成形してある。 Note that the pinion 5, intermediate gear 6, and drive gear 12 are each molded from a synthetic resin material.
１４は上刃７と下刃８とを差動状に往復駆動す
るために主軸１３に遊転可能に嵌装されかつ駆動
ギヤ１２の下方にプレート１５を介して隣設され
て下ガイド板９上に載置されたクランクであつ
て、このクランク１４は上刃７を往復駆動するた
めに上刃７のクランク孔７ａ内に遊嵌された上偏
心盤１４ａと、下刃８を往復駆動するために下刃
８のクランク孔８ａ内に遊嵌された下偏心盤１４
ｂとを有し、この上下偏心盤１４ａ，１４ｂは
180゜の位相差でそれぞれ偏心回転するように上下
一体状に並設されている。クランク１４の上面に
はセンタ孔１４ｃの孔縁から離隔した位置に配設
されて駆動ギヤ１２の両挿入孔１２ｂ内にそれぞ
れ挿入された１対の連動ピン１４ｄ，１４ｄが、
駆動ギヤ１２とクランク１４とをクランク１４の
センタ孔１４ｃの孔縁から半径方向へ離隔した位
置で分離可能に結合して駆動ギヤ１２とクランク
１４とを共転可能に連繋するために突設されると
ともに、駆動ギヤ１２およびクランク１４は下ガ
イド板９によつて下方に対して抜け止めされてい
て、駆動ギヤ１２の回転が両連動ピン１４ｄを介
してクランク１４に伝達されるとともに、クラン
ク１４の回転で上刃７および下刃８を180゜の位相
差で前後方向へ差動状に往復駆動することができ
る。 A lower guide plate 9 14 is rotatably fitted to the main shaft 13 to reciprocate the upper blade 7 and the lower blade 8 in a differential manner, and is disposed adjacent to the drive gear 12 via a plate 15. This crank 14 is a crank placed on the upper blade, and this crank 14 drives an upper eccentric disc 14a loosely fitted in the crank hole 7a of the upper blade 7 to reciprocate the upper blade 7, and the lower blade 8 to reciprocate. The lower eccentric disc 14 is loosely fitted into the crank hole 8a of the lower blade 8.
b, and these upper and lower eccentric discs 14a and 14b are
They are arranged vertically in parallel so that they each rotate eccentrically with a phase difference of 180°. A pair of interlocking pins 14d, 14d are arranged on the upper surface of the crank 14 at a position apart from the hole edge of the center hole 14c and inserted into both insertion holes 12b of the drive gear 12, respectively.
The drive gear 12 and the crank 14 are protruded to connect the drive gear 12 and the crank 14 so as to be able to rotate together by connecting the drive gear 12 and the crank 14 in a separable manner at a position spaced apart in the radial direction from the hole edge of the center hole 14c of the crank 14. At the same time, the drive gear 12 and the crank 14 are prevented from coming off downward by the lower guide plate 9, and the rotation of the drive gear 12 is transmitted to the crank 14 via both interlocking pins 14d. With this rotation, the upper blade 7 and the lower blade 8 can be differentially reciprocated in the front and rear directions with a phase difference of 180 degrees.
次に、上記した構成をもつ実施例の作用と効果
を説明する。 Next, the operation and effects of the embodiment having the above configuration will be explained.
本例ではハウジング１内に垂支された主軸１３
には、ハウジング１の下端に取着した上下ガイド
板９間に挟持された上刃７と下刃８とを差動状に
往復駆動するために上刃７の基端部と下刃８の基
端部とに嵌挿されて180゜の位相差でそれぞれ偏心
回転するように一体状に並設された上偏心盤１４
ａと下偏心盤１４ｂとを有するクランク１４と、
このクランク１４上に設置された駆動ギヤ１２と
をそれぞれ遊転可能に嵌装し、駆動ギヤ１２とク
ランク１４とをこのクランク１４のセンタ孔１４
ｃの孔縁から半径方向へ離隔した位置で駆動ギヤ
１２とクランク１４とを分離可能に結合する両挿
入孔１２ｂおよび両連動ピン１４ｄによつて共転
可能に連繋するとともに、駆動ギヤ１２とクラン
ク１４とを、下ガイド板９によつて下方に対して
抜け止めしてある。 In this example, the main shaft 13 is suspended in the housing 1.
In order to differentially reciprocate the upper blade 7 and the lower blade 8, which are held between the upper and lower guide plates 9 attached to the lower end of the housing 1, the base end of the upper blade 7 and the lower blade 8 are connected to each other. and an upper eccentric disk 14 which is fitted into the base end portion and arranged in parallel so as to rotate eccentrically with a phase difference of 180°.
a crank 14 having a lower eccentric disk 14b;
A drive gear 12 installed on the crank 14 is fitted so as to be freely rotatable, and the drive gear 12 and the crank 14 are connected to the center hole 14 of the crank 14.
The drive gear 12 and the crank 14 are connected to each other so as to rotate together by both insertion holes 12b and both interlocking pins 14d, which connect the drive gear 12 and the crank 14 in a separable manner at a position radially apart from the hole edge of c. 14 is prevented from coming off downward by a lower guide plate 9.
このため、駆動ギヤ１２やクランク１４の交換
に際し、下ガイド板９をハウジング１から取外す
だけでクランク１４および駆動ギヤ１２を主軸１
３から抜き取ることができ、また、駆動ギヤ１２
およびクランク１４を主軸１３に嵌装した状態で
下ガイド板９をハウジング１に取付けることによ
つて刃物駆動機構を組立てることができ、刃物駆
動機構の分解および組立て作業を簡便化しうる効
果がある。 Therefore, when replacing the drive gear 12 and the crank 14, simply removing the lower guide plate 9 from the housing 1 allows the crank 14 and the drive gear 12 to be replaced with the main shaft 1.
3, and the drive gear 12
The blade drive mechanism can be assembled by attaching the lower guide plate 9 to the housing 1 with the crank 14 fitted to the main shaft 13, which has the effect of simplifying the disassembly and assembly work of the blade drive mechanism.
また、駆動ギヤ１２およびクランク１４の一方
を、その破損時や損耗時に個々に交換して全体の
耐用寿命を延長しうるとともに、駆動ギヤ１２お
よびクランク１４をそれぞれの要求特性に適応し
た材質を選定して製作しうるため、部材間の耐用
性のアンバランスを排除して材料コストを節減す
ることができる。 In addition, one of the drive gear 12 and the crank 14 can be replaced individually when it is damaged or worn out to extend the overall service life, and the material of the drive gear 12 and the crank 14 can be selected to suit the required characteristics of each. Therefore, it is possible to eliminate imbalances in durability between members and reduce material costs.
また、駆動ギヤ１２の回転駆動力がクランク１
４のセンタ孔１４ｃの孔縁から半径方向へ離隔し
た位置でクランク１４に伝達されてクランク１４
が回転駆動され、クランク１４が主軸１３に固止
されていないので、クランク１４を回転駆動する
ために要する回転駆動力を低減しうるとともに、
クランク１４を円滑に回転駆動して駆動ギヤ１２
およびクランク１４の破損を低減しうる効果があ
る。 Further, the rotational driving force of the drive gear 12 is
The transmission is transmitted to the crank 14 at a position radially away from the hole edge of the center hole 14c of No. 4, and the crank 14
is rotationally driven and the crank 14 is not fixed to the main shaft 13, so the rotational driving force required to rotationally drive the crank 14 can be reduced, and
The crank 14 is rotated smoothly to drive the drive gear 12.
This also has the effect of reducing damage to the crank 14.
すなわち、本考案は実用新案登録請求の範囲に
記載した通りに構成してあるので、駆動ギヤやク
ランクの交換に際し、下ガイド板をハウジングか
ら取外すだけでクランクおよび駆動ギヤを主軸か
ら抜き取ることができ、また、駆動ギヤおよびク
ランクを主軸に嵌装した状態で下ガイド板をハウ
ジングに取付けることによつて刃物駆動機構を組
立てることができ、刃物駆動機構の分解および組
立て作業を簡便化しうる効果がある。 In other words, since the present invention is constructed as described in the claims for utility model registration, when replacing the drive gear or crank, the crank and drive gear can be removed from the main shaft by simply removing the lower guide plate from the housing. Furthermore, the blade drive mechanism can be assembled by attaching the lower guide plate to the housing with the drive gear and crank fitted to the main shaft, which has the effect of simplifying the disassembly and assembly work of the blade drive mechanism. .
また、駆動ギヤの回転駆動力がクランクのセン
タ孔の孔縁から半径方向へ離隔した位置でクラン
クに伝達されてクランクが回転駆動され、クラン
クが主軸に固止されていないので、クランクを回
転駆動するために要する回転駆動力を低減しうる
とともに、クランクを円滑に回転駆動して駆動ギ
ヤおよびクランクの破損を低減しうる効果があ
る。 In addition, the rotational driving force of the drive gear is transmitted to the crank at a position radially distant from the hole edge of the center hole of the crank, and the crank is rotationally driven.Since the crank is not fixed to the main shaft, the crank is rotationally driven. This has the effect of reducing the rotational driving force required to rotate the crank, and also allows the crank to rotate smoothly, thereby reducing damage to the drive gear and the crank.
第１図、第２図はそれぞれ従来のクランク機構
を示す斜視図および分解斜視図、第３図、第４図
は本考案の一実施例を示すもので、第３図はヘツ
ジトリマーの要部の縦断面図、第４図は刃物駆動
機構の分解斜視図である。
１……ハウジング、７……上刃、８……下刃、
１２……駆動ギヤ、１４……クランク、１４ａ…
…上偏心盤、１４ｂ……下偏心盤。
Figures 1 and 2 are a perspective view and an exploded perspective view showing a conventional crank mechanism, respectively, Figures 3 and 4 are an embodiment of the present invention, and Figure 3 shows the main parts of a hedge trimmer. The vertical sectional view and FIG. 4 are exploded perspective views of the blade drive mechanism. 1...Housing, 7...Upper blade, 8...Lower blade,
12... Drive gear, 14... Crank, 14a...
...Upper eccentric disk, 14b...Lower eccentric disk.
Claims (1)
ジングの下端に取着した上下ガイド板間に挟持さ
れた上刃と下刃とを差動状往復駆動するために前
記上刃の基端部と前記下刃の基端部とに嵌挿され
て180゜の位相差でそれぞれ偏心回転するように一
体状に並設された上偏心盤と下偏心盤とを有する
クランクと、このクランク上に設置された駆動ギ
ヤとをそれぞれ遊転可能に嵌装し、前記駆動ギヤ
と前記クランクとをこのクランクのセンタ孔の孔
縁から半径方向へ離隔した位置で前記駆動ギヤと
前記クランクとを分離可能に結合する結合手段に
よつて共転可能に連繋するとともに、前記駆動ギ
ヤと前記クランクとを、前記下ガイド板によつて
下方に対して抜け止めしたことを特徴とするヘツ
ジトリマーにおける刃物駆動装置。 A main shaft suspended in the housing has a base end portion of the upper blade and a lower blade portion for differentially reciprocating the upper blade and lower blade held between upper and lower guide plates attached to the lower end of the housing. a crank having an upper eccentric disc and a lower eccentric disc that are integrally arranged in parallel so as to be fitted into the base end of the lower blade and rotate eccentrically with a phase difference of 180°; and installed on the crank. The drive gear and the crank are fitted so that they can rotate freely, and the drive gear and the crank can be separated from each other at a position spaced apart in a radial direction from the edge of the center hole of the crank. A blade drive device for a hedging trimmer, characterized in that the driving gear and the crank are connected to each other so as to be rotatable together by a connecting means, and the drive gear and the crank are prevented from coming off downwardly by the lower guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4781384U JPS60160117U (en) | 1984-03-31 | 1984-03-31 | Blade drive device in hedge trimmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4781384U JPS60160117U (en) | 1984-03-31 | 1984-03-31 | Blade drive device in hedge trimmer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60160117U JPS60160117U (en) | 1985-10-24 |
| JPH0238609Y2 true JPH0238609Y2 (en) | 1990-10-17 |
Family
ID=30563484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4781384U Granted JPS60160117U (en) | 1984-03-31 | 1984-03-31 | Blade drive device in hedge trimmer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60160117U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5873776B2 (en) * | 2012-07-31 | 2016-03-01 | 株式会社マキタ | Gardening hair clipper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51149053U (en) * | 1975-05-23 | 1976-11-29 |
-
1984
- 1984-03-31 JP JP4781384U patent/JPS60160117U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60160117U (en) | 1985-10-24 |
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