JPH07314402A - Chain saw - Google Patents

Chain saw

Info

Publication number
JPH07314402A
JPH07314402A JP11702994A JP11702994A JPH07314402A JP H07314402 A JPH07314402 A JP H07314402A JP 11702994 A JP11702994 A JP 11702994A JP 11702994 A JP11702994 A JP 11702994A JP H07314402 A JPH07314402 A JP H07314402A
Authority
JP
Japan
Prior art keywords
chain
guide bar
saw
movable member
guide
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.)
Granted
Application number
JP11702994A
Other languages
Japanese (ja)
Other versions
JP3142439B2 (en
Inventor
Minoru Yonekawa
実 米川
Iwamatsu O
岩松 王
Kazuhiko Takahashi
一彦 高橋
Yoshiki Nakayama
良樹 中山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kioritz Corp
Original Assignee
Kioritz Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kioritz Corp filed Critical Kioritz Corp
Priority to JP06117029A priority Critical patent/JP3142439B2/en
Publication of JPH07314402A publication Critical patent/JPH07314402A/en
Application granted granted Critical
Publication of JP3142439B2 publication Critical patent/JP3142439B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27BSAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00Chain saws; Equipment therefor
    • B27B17/14Arrangements for stretching the chain saw

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

PURPOSE:To easily incorporate a chain tensioner into a machine body and improve supporting stability and durability of the chain tensioner. CONSTITUTION:A guide bar 44 wherein it is held by being placed between a chain saw main body 20 and sprocket guard 30 and wound around its circumferential part by a saw chain 42 and a chain tensioner 100 wherein it is connected with the guide bar 44 along its longitudinal direction and the saw chain 42 is tensed in a tensing direction are provided. The chain tensioner 100 is comprised by providing the inside of a fitting seat part 31 with a guide member 110 arranged on the fitting seat part 31 pinching and holding the guide bar 44 unchangeably from a positional point of view. a movable member 120 which is fitted movably relatively to the guide member 110 and the guide bar 44 is made movable in its longitudinal direction and a coil spring 40 energizing the movable member 120 in the direction of the tip of the guide bar 44.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、木材の伐採や切断等に
使用されるチェーンソーに関し、特に、ソーチェーンの
テンションを自動的に調整可能なチェーンテンショナー
を備えたチェーンソーに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain saw used for felling and cutting wood, and more particularly to a chain saw having a chain tensioner capable of automatically adjusting the tension of the saw chain.

【0002】[0002]

【従来の技術】一般に、チェーンソーを長期間使用する
と、ソーチェーンの連結部が摩耗する等して伸び、ソー
チェーンに緩みが生じてスプロッケットから外れる場合
があり、ソーチェーンを時々張り直すことが必要であ
る。また、ソーチェーンの交換時に、ガイドバーにソー
チェーンを装着した後、ソーチェーンの張りを調節する
ことが必要である。
2. Description of the Related Art Generally, when a chain saw is used for a long period of time, the connecting part of the saw chain may be worn out or stretched, and the saw chain may become loose and come off the sprocket. Is. Also, when replacing the saw chain, it is necessary to adjust the tension of the saw chain after mounting the saw chain on the guide bar.

【0003】例えば、実開昭61−93201号公報等
により、チェーンソーにチェーンテンショナーを設ける
ことが知られている。図4〜6はそのような従来のチェ
ーンテンショナーを備えたチェーンソーを模式的に示す
ものである。図4は従来のチェーンソーの左側面図、図
5は図4のV-V 矢視断面図、図6は図4のVI-VI 矢視断
面図である。
For example, it is known from Japanese Utility Model Application Laid-Open No. 61-93201 to provide a chain saw with a chain tensioner. 4 to 6 schematically show a chain saw provided with such a conventional chain tensioner. 4 is a left side view of a conventional chainsaw, FIG. 5 is a sectional view taken along the line VV of FIG. 4, and FIG. 6 is a sectional view taken along the line VI-VI of FIG.

【0004】従来例のチェーンソー1は、図4に示すよ
うに、ガイドバー2及びスプロッケット3の周囲に無端
状のソーチェーン4が巻回され、前記スプロケット3が
図示しないモータ等の原動機によって駆動せしめられる
と、前記ソーチェーン4が前記ガイドバー2に沿って摺
走行するように構成されている。図6に示すように、該
ガイドバー2はチェーンソー本体側の取付座5とスプロ
ケットガード6間に挟持されるとともに、スタッドボル
ト7及びナット7aによって緊締固着されている。ま
た、前記ガイドバー2には、前記スタッドボルト7が挿
通せしめられる前記ガイドバー2の長手方向に沿った長
孔8が形成されている(図4参照)。
In a conventional chain saw 1, as shown in FIG. 4, an endless saw chain 4 is wound around a guide bar 2 and a sprocket 3, and the sprocket 3 is driven by a prime mover such as a motor (not shown). Then, the saw chain 4 is configured to slide along the guide bar 2. As shown in FIG. 6, the guide bar 2 is sandwiched between a mounting seat 5 and a sprocket guard 6 on the chain saw body side, and is tightly fixed by a stud bolt 7 and a nut 7a. Further, the guide bar 2 is formed with an elongated hole 8 along the longitudinal direction of the guide bar 2 into which the stud bolt 7 is inserted (see FIG. 4).

【0005】そして、チェーンテンショナーは、図6に
示すように、ロッド部材12とスプリング13とから構
成されている。前記ロッド部材12は、円柱状または角
柱状の部材の一端を直角に折曲げ、さらに、その先端に
突起12aを形成してなるロッド12bと、該ロッド1
2bの他端に形成された鍔部12cとから構成されてい
る。そして、前記ロッド12bが、前記スプロケットガ
ード6に形成された孔内に摺動自在に嵌入され、かつ矢
印Yで示したチェーン張り方向に沿って配置されるとと
もに、前記突起12aが前記ガイドバー2に形成された
孔2a内に挿入されている。また、前記スプロケットガ
ード6の前端面6aと前記ロッド部材12の鍔部12c
との間にコイルスプリング13が介挿されている。
The chain tensioner is composed of a rod member 12 and a spring 13, as shown in FIG. The rod member 12 includes a rod 12b formed by bending one end of a cylindrical or prismatic member at a right angle and further forming a protrusion 12a at the tip thereof, and the rod 1b.
It is composed of a flange portion 12c formed at the other end of 2b. Then, the rod 12b is slidably fitted in the hole formed in the sprocket guard 6, and is arranged along the chain tension direction shown by the arrow Y, and the projection 12a is provided with the guide bar 2 It is inserted in the hole 2a formed in. Further, the front end surface 6a of the sprocket guard 6 and the collar portion 12c of the rod member 12
A coil spring 13 is interposed between the and.

【0006】このような構成により、前記ロッド部材1
2は、前記コイルスプリング13の付勢力によって常時
チェーン張り方向(矢印Y方向)へ付勢されており、し
たがって、前記ガイドバー2もチェーン張り方向へ付勢
されている。しかし、前記スタッドボルト7がナット7
aで締付けられている時は、該ナット7aの締付力によ
って前記ガイドバー2は適正チェーン張り位置に固定さ
れており、移動することはない。次に、前記ソーチェー
ン4を張り直す場合は、前記ナット7aを一旦緩め、次
いで再び締付ける。前記ナット7aを緩めると、前記ス
プリング13の付勢力により前記ガイドバー2が張り方
向Yへ移動し、前記ソーチェーン4が張り直される。こ
の場合、前記ソーチェーン4の張り具合は前記コイルス
プリング13の付勢力によって決定され、したがって、
該コイルスプリング13のバネ定数を適切に定めておけ
ば、前記ソーチェーン4を常に適切な張り具合で張るこ
とができる。そして、再び前記ナット7aを締付けれ
ば、前記ガイドバー2が再び適正チェーン張り位置で固
定される。
With such a structure, the rod member 1
The coil spring 13 is constantly urged in the chain tension direction (arrow Y direction) by the urging force of the coil spring 13. Therefore, the guide bar 2 is also urged in the chain tension direction. However, the stud bolt 7 is replaced by the nut 7
When tightened with a, the guide bar 2 is fixed to the proper chain tension position by the tightening force of the nut 7a and does not move. Next, when re-tensioning the saw chain 4, the nut 7a is once loosened and then tightened again. When the nut 7a is loosened, the urging force of the spring 13 moves the guide bar 2 in the tension direction Y, and the saw chain 4 is re-tensioned. In this case, the tension of the saw chain 4 is determined by the biasing force of the coil spring 13, and therefore,
If the spring constant of the coil spring 13 is set appropriately, the saw chain 4 can always be stretched with an appropriate tension. When the nut 7a is tightened again, the guide bar 2 is fixed again at the proper chain tension position.

【0007】[0007]

【発明が解決しようとする課題】前記の如き従来のチェ
ーンソーにおいては、チェーンテンショナーをチェーン
ソーに組込む場合に、ロッド部材を支持する部材もない
ことから安定した固定が得られないという問題点があっ
た。さらに、コイルスプリングが外部に露出しているた
めに損傷しやすく、鋸断屑等がこびり付いて動きが悪く
なる等の問題点があった。
In the conventional chain saw as described above, when the chain tensioner is incorporated into the chain saw, there is no member for supporting the rod member, so that stable fixing cannot be obtained. . Further, since the coil spring is exposed to the outside, the coil spring is easily damaged, and saw chips and the like are stuck to the coil spring, resulting in poor movement.

【0008】本発明は、このような問題に鑑みてなされ
たものであって、その目的は、特に、チェーンテンショ
ナーを容易に機体に組込むことができるとともに、チェ
ーンテンショナーの支持安定性及び耐久性を向上させる
ことができる、チェーンソーを提供することである。
The present invention has been made in view of the above problems, and it is an object of the present invention, in particular, that the chain tensioner can be easily incorporated in the machine body and that the support stability and durability of the chain tensioner can be improved. It is to provide a chainsaw that can be improved.

【0009】[0009]

【課題を解決するための手段】前記の目的を達成すべ
く、本発明に係わるチェーンソーは、チェーンソー本体
と、該チェーンソー本体の動力部を施蓋するスプロケッ
トガードと、該スプロケットガードと前記チェーンソー
本体の間に挟持せしめられ、無端状のソーチェーンが外
周部に巻回せしめられたガイドバーと、該ガイドバーを
その長手方向に沿って移動可能に係止し、前記ソーチェ
ーンを張り方向に緊張せしめるチェーンテンショナーを
備えたチェーンソーにおいて、前記チェーンテンショナ
ーは、前記ガイドバーを挟持する取付座部に長手方向位
置不変に配設された案内部材と、該案内部材に相対移動
可能に取付けられるとともに、前記ガイドバーをその長
手方向に移動可能にせしめる可動部材と、該可動部材を
前記ガイドバーの先端方向に付勢するコイルばねと、を
前記取付座部内に備えたことを特徴としている。
In order to achieve the above-mentioned object, a chain saw according to the present invention comprises a chain saw body, a sprocket guard for covering a power part of the chain saw body, a sprocket guard and the chain saw body. An endless saw chain, which is sandwiched between the guide bars, is wound around the outer periphery of the guide bar, and the guide bar is movably locked along the longitudinal direction of the guide bar to tension the saw chain in the tension direction. In a chain saw having a chain tensioner, the chain tensioner is mounted on a mounting seat portion for sandwiching the guide bar so that a longitudinal position thereof does not change, and the guide member is mounted so as to be relatively movable on the guide member. A movable member that allows the bar to move in its longitudinal direction, and the movable member at the tip of the guide bar. It is characterized by comprising a coil spring for urging in a direction, to the mounting seat portion.

【0010】そして、本発明の好適な具体例としては、
前記案内部材は軸部を設けるとともに、前記可動部材は
前記軸部が挿入されて摺動可能な筒状部を設けてなり、
さらに、前記可動部材は、前記取付座部に形成されたチ
ェーンテンショナー取付溝部に嵌合せしめられ、該チェ
ーンテンショナー取付溝部に対して前記筒状部の軸芯回
りの回動を不能ならしめる側面形状を有する鍔部を備え
たことを特徴とするものが挙げられ、さらに、前記鍔部
は、前記ガイドバーの孔に係合せしめられる突起部を備
えたことを特徴とするものが好ましい。
Then, as a preferred specific example of the present invention,
The guide member is provided with a shaft portion, and the movable member is provided with a tubular portion into which the shaft portion is inserted and which can slide.
Further, the movable member is fitted in a chain tensioner mounting groove formed in the mounting seat portion, and a side surface shape for preventing rotation of the tubular portion around the shaft center with respect to the chain tensioner mounting groove. It is preferable that the collar portion is provided with a protrusion portion that is engaged with the hole of the guide bar.

【0011】[0011]

【作 用】前述の如く構成された本発明に係わるチェー
ンソーにおいては、手動等によりチェーンテンショナー
の可動部材を操作すると、該可動部材の筒状部は案内部
材の軸部に外嵌し、かつ、可動部材がチェーンテンショ
ナー取付溝部内をガイドされて、コイルばねの付勢力に
抗してソーチェーンの張りを弛緩させる方向にガイドバ
ーが移動する。この状態で、ソーチェーンをガイドバー
に装着し、可動部材の押圧力を解除すると、ガイドバー
はコイルばねの付勢力によりソーチェーンの張りを緊張
させる方向に移動し、自動的にソーチェーンの張りを適
正値に調整することができる。このようにして、ソーチ
ェーンをガイドバーに容易に取付けたり、張りを調整す
ることができる。
[Operation] In the chain saw according to the present invention configured as described above, when the movable member of the chain tensioner is manually operated, the tubular portion of the movable member is fitted onto the shaft portion of the guide member, and The movable member is guided in the chain tensioner mounting groove portion, and the guide bar moves in a direction of relaxing the tension of the saw chain against the biasing force of the coil spring. In this state, when the saw chain is attached to the guide bar and the pressing force of the movable member is released, the guide bar moves in the direction to tension the saw chain by the biasing force of the coil spring, and the tension of the saw chain is automatically increased. Can be adjusted to an appropriate value. In this way, the saw chain can be easily attached to the guide bar and the tension can be adjusted.

【0012】[0012]

【実施例】以下、図面により本発明の一実施例を説明す
る。図1は本発明に係わる一実施例チェーンソーの要部
分解斜視図、図2は要部拡大正面図、図3は図2のIII-
III 矢視断面図である。図示例のチェーンソー10は、
チェーンソー本体20と、その周囲に無端状のソーチェ
ーン42が走行可能に巻回せしめられるガイドバー44
と、該ガイドバー44の基端部及び前記チェーンソー本
体20のスプロケット(図示略)等の動力部を覆うよう
に前記チェーンソー本体20に取付けられるスプロケッ
トガード30と、該スプロケットガード30の前端部に
形成されたチェーンテンショナー取付座部31に設けら
れ、前記ソーチェーン42のテンションを自動的に調整
できるチェーンテンショナー100と、前記取付座部3
1にビス51により固定せしめられるカバープレート5
0とからなる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is an exploded perspective view of a main part of a chain saw according to an embodiment of the present invention, FIG. 2 is an enlarged front view of the main part, and FIG.
FIG. 3 is a sectional view taken along the arrow III. The chainsaw 10 in the illustrated example is
A chain saw body 20 and a guide bar 44 around which an endless saw chain 42 is wound so as to be able to travel.
And a sprocket guard 30 attached to the chain saw body 20 so as to cover a base end portion of the guide bar 44 and a power part such as a sprocket (not shown) of the chain saw body 20 and a front end portion of the sprocket guard 30. A chain tensioner 100 that can be automatically adjusted in tension of the saw chain 42, which is provided on the chain tensioner mounting seat 31 and the mounting seat 3
Cover plate 5 that can be fixed to 1 with screws 51
It consists of 0 and.

【0013】前記チェーンテンショナー100は、前記
スプロケットガード30の前記取付座部31にその長手
方向位置不変に配設された案内部材110と、該案内部
材110に対して摺動自在に設けられるとともに前記ガ
イドバー44を前後方向に移動可能にせしめる可動部材
120と、該可動部材120を前方(図2では左方向)
に付勢するコイルばね40とを備えている。また、前記
スプロケットガード30の前記取付座部31の下端部に
は、その前後端縁部に略半円状の切り欠きを有する前部
及び後部壁31a、31bが形成され、それらの間に前
後水平方向に延びた例えば矩形状のチェーンテンショナ
ー取付溝部32が形成されている。
The chain tensioner 100 is provided with a guide member 110 disposed in the mounting seat portion 31 of the sprocket guard 30 so that its longitudinal position does not change, and slidably with respect to the guide member 110. A movable member 120 that allows the guide bar 44 to move in the front-rear direction, and the movable member 120 forward (to the left in FIG. 2).
And a coil spring 40 for urging the coil spring. In addition, front and rear walls 31a and 31b having substantially semicircular notches are formed at the front and rear edges of the lower end of the mounting seat 31 of the sprocket guard 30. For example, a rectangular chain tensioner mounting groove 32 extending in the horizontal direction is formed.

【0014】そして、前記案内部材110は、軸部11
1と、該軸部111の一端部に前記後部壁31bの板厚
分だけ離間して一体形成された鍔部112、113とか
らなり、該鍔部112、113が前記後部壁31bを両
側から挟持するようにして前記取付座部31にその長手
方向位置不変に固定、すなわち、軸線方向に移動しない
ように係合されている。
The guide member 110 has a shaft portion 11
1 and collar portions 112 and 113 integrally formed at one end of the shaft portion 111 with a distance corresponding to the thickness of the rear wall 31b. The collar portions 112 and 113 form the rear wall 31b from both sides. It is fixed to the mounting seat 31 so as not to move in the axial direction, that is, the mounting seat 31 is fixed so as not to move in the axial direction.

【0015】一方、前記可動部材120は、前記案内部
材110の前記軸部111の円柱状の他端部が挿脱自在
な中空部121aが形成された円筒状の筒状部121
と、前記チェーンテンショナー取付溝部32の断面形状
と同一の側面形状を有し、前記筒状部121の一端部に
一体形成された鍔部123と、前記筒状部121の前記
スプロケットガード30から前方へ突出した他端部に一
体形成された鍔状の操作部122とからなり、前記鍔部
123には前記チェーンソー本体20側に突出する一体
形成された突起部123aが設けられている。
On the other hand, the movable member 120 has a cylindrical tubular portion 121 having a hollow portion 121a into which the other cylindrical end portion of the shaft portion 111 of the guide member 110 can be inserted and removed.
And a flange 123 that has a side surface shape that is the same as the cross-sectional shape of the chain tensioner mounting groove portion 32 and that is integrally formed at one end of the tubular portion 121, and forward of the tubular portion 121 from the sprocket guard 30. And a projecting portion 123a integrally formed on the other end of the chain saw body. The brim portion 123 is provided with an integrally formed projecting portion 123a projecting to the chain saw body 20 side.

【0016】このように構成されたチェーンテンショナ
ー100は、図2及び3に示すように、前記案内部材1
10の鍔部112と前記可動部材120の鍔部123と
の間に前記コイルばね40が挟装せしめられるととも
に、前記案内部材110の前記軸部111が前記可動部
材120の前記筒状部121に形成された前記中空部1
21aに入れ子式に挿入された状態で、前記取付座部3
1のチェーンテンショナー取付溝部32内に格納されて
いる。このように、前記案内部材110が前記取付座部
31内に保持されているので、前記可動部材120は、
前記操作部122を前方(図2の左側方)から押圧した
場合、前記案内部材110側の前記軸部111に案内さ
れながら後方(右側)へ移動することになる。また、前
記可動部材120の鍔部123の側面形状が前記チェー
ンテンショナー取付溝部32の矩形状の断面形状と同一
形状に形成されているので、前記チェーンテンショナー
100は位置決めが容易で、かつ、ぐらつかず確実に前
記取付座部31内に取付けることができ、したがって、
前記可動部材120の鍔部123に一体形成された前記
突起部123aの突出方向を容易に定めることができ
る。
As shown in FIGS. 2 and 3, the chain tensioner 100 having the above-mentioned structure includes the guide member 1 as described above.
The coil spring 40 is sandwiched between the collar portion 112 of the movable member 120 and the collar portion 112 of the movable member 120, and the shaft portion 111 of the guide member 110 is connected to the tubular portion 121 of the movable member 120. The hollow part 1 formed
21a, in the state of being telescopically inserted into the mounting seat 3
It is stored in the chain tensioner mounting groove 32 of No. 1. As described above, since the guide member 110 is held in the mounting seat portion 31, the movable member 120 is
When the operation portion 122 is pressed from the front side (left side in FIG. 2), the operation portion 122 moves rearward (right side) while being guided by the shaft portion 111 on the guide member 110 side. Further, since the side surface shape of the collar portion 123 of the movable member 120 is formed in the same shape as the rectangular cross-sectional shape of the chain tensioner mounting groove portion 32, the chain tensioner 100 is easy to position and does not wobble. It can be securely mounted in the mounting seat portion 31, and therefore,
It is possible to easily determine the protruding direction of the protrusion 123a integrally formed with the flange 123 of the movable member 120.

【0017】前記チェーンテンショナー取付溝部32に
取付けられた前記チェーンテンショナー100を覆うよ
うに、前記カバープレート50が前記ビス51により前
記取付座部31に固定され、前記チェーンテンショナー
100の構成部材のすべてが、前記チェーンテンショナ
ー取付溝部32内に密封状に収容される。その際、前記
可動部120の前記鍔部123に形成された突起部12
3aは、前記カバープレート50の下端部に形成された
長孔52に挿通せしめられ、前記ガイドバー44の基端
部に形成された孔45に係止される。
The cover plate 50 is fixed to the mounting seat portion 31 by the screws 51 so as to cover the chain tensioner 100 mounted in the chain tensioner mounting groove portion 32, and all the constituent members of the chain tensioner 100 are fixed. , Is housed in the chain tensioner mounting groove 32 in a sealed manner. At that time, the protruding portion 12 formed on the collar portion 123 of the movable portion 120.
3a is inserted through a long hole 52 formed at the lower end of the cover plate 50, and is locked in a hole 45 formed at the base end of the guide bar 44.

【0018】前記ガイドバー44には前記チェーンソー
本体20に前後水平方向に離間して設けられた二本のス
タッドボルト22、22が挿通する長孔47が形成され
るとともに、前記カバープレート50にも前記スタッド
ボルト22、22が挿通する孔54、54が設けられて
いる。また、前記取付座部31には、前記ガイドバー4
4の前記長孔47、及び前記カバープレート50の前記
孔54、54を挿通した前記スタッドボルト22、22
を挿通する孔33、33が設けられている。このように
して、前記ガイドバー44は、図示しない締付ナットを
用いて前記チェーンソー本体20と前記スプロケットガ
ード30との間に挟持固定されている。
The guide bar 44 is formed with a long hole 47 into which the two stud bolts 22 provided in the chain saw main body 20 in the front-rear horizontal direction are inserted, and also in the cover plate 50. Holes 54, 54 through which the stud bolts 22, 22 are inserted are provided. Further, the guide bar 4 is attached to the mounting seat portion 31.
4 and the stud bolts 22, 22 inserted through the long holes 47 of the cover plate 50 and the holes 54, 54 of the cover plate 50.
Holes 33, 33 for inserting the through holes are provided. In this way, the guide bar 44 is clamped and fixed between the chain saw body 20 and the sprocket guard 30 by using a tightening nut (not shown).

【0019】次に、このように構成された本発明の一実
施例のチェーンソーの作用について説明する。先ず、作
業者が手の指で図2の矢印方向(後方)に前記操作部1
22を押圧すると、前記可動部材120の前記筒状部1
21の前記中空部121aは、前記案内部材110の前
記軸部111を外嵌し、かつ、前記可動部材120の鍔
部123が前記チェーンテンショナー取付溝部32内を
ガイドされて、前記コイルばね40の付勢力に抗して図
の右方向へ移動する(図2仮想線で示す)。このとき、
前記可動部120の後端部に形成された前記鍔部123
の前記突起部123aが前記カバープレート50の前記
長孔52内を後方に摺動し、前記ガイドバー44を後方
(図示しないスプロケット側)に押すことができる。そ
して、前記操作部122を押圧したままの状態で、もう
一方の手でソーチェーン42を前記ガイドバー44の周
囲に巻回せしめた後、前記操作部122から指を離す
と、該操作部122は前記コイルばね40の付勢力によ
り前方に戻る。このとき、前記可動部材120の鍔部1
23の前記突起部123aが前記カバープレート50の
前記長孔52内を前方に摺動し、前記ガイドバー44を
前方(図示しないスプロケットの反対側)に押すので、
前記ソーチェーン42は自動的に緊張する。このように
して、前記ソーチェーン42を前記ガイドバー44に容
易に取付けることができる。一方、前記ソーチェーン4
2を取り外す場合には、前記スタッドボルト22、22
の締付ナットを緩め、前記操作部122を押圧して前記
ソーチェーン42を弛緩させればよい。なお、前記コイ
ルばね40のばね定数を適当に設定しておけば、前記ソ
ーチェーン42には所定の緊張力が与えられることは言
うまでもない。
Next, the operation of the thus constructed chain saw according to the embodiment of the present invention will be described. First, the operator uses the fingers of the hand in the direction of the arrow (rearward) in FIG.
22 is pressed, the tubular portion 1 of the movable member 120 is pressed.
The hollow portion 121a of 21 is fitted onto the shaft portion 111 of the guide member 110, and the flange portion 123 of the movable member 120 is guided in the chain tensioner mounting groove portion 32, so that the coil spring 40 of It moves to the right in the figure against the biasing force (shown by a virtual line in FIG. 2). At this time,
The collar portion 123 formed at the rear end of the movable portion 120.
The protrusion 123a can slide rearward in the elongated hole 52 of the cover plate 50 and push the guide bar 44 rearward (on the side of the sprocket (not shown)). Then, while the operating portion 122 is being pressed, the saw chain 42 is wound around the guide bar 44 with the other hand, and then the finger is released from the operating portion 122. Is returned to the front by the biasing force of the coil spring 40. At this time, the collar portion 1 of the movable member 120
Since the protrusion 123a of 23 slides forward in the elongated hole 52 of the cover plate 50 and pushes the guide bar 44 forward (the opposite side of the sprocket (not shown)),
The saw chain 42 automatically tensions. In this way, the saw chain 42 can be easily attached to the guide bar 44. On the other hand, the saw chain 4
When removing 2, the stud bolts 22, 22
It is sufficient to loosen the tightening nut and press the operation portion 122 to loosen the saw chain 42. Needless to say, if the spring constant of the coil spring 40 is set appropriately, a predetermined tension force is applied to the saw chain 42.

【0020】このように、前記チェーンテンショナー1
00を、前記スプロケットガード30の前記取付座部3
1に固定される前記案内部材110と、前記ガイドバー
44を前後方向に移動可能にせしめる可動部材120と
に分割して構成し、かつ、前記可動部材120を前記ガ
イドバー44の先端方向に付勢するように前記コイルば
ね40を介装するとともに、前記可動部120に前記取
付座部31に形成された矩形状のチェーンテンショナー
取付溝部32の横断面形状に沿った形状を備えた前記鍔
部123を一体的に形成したことにより、簡単な操作で
前記ソーチェーン42の着脱を行うことができるととも
に、前記ソーチェーン42のテンション調整を自動的に
行うことができる。また、前記チェーンテンショナー1
00の位置決めが容易で、かつ、確実に前記取付座部3
1内に取付けることができ、しかも、支持安定性及び耐
久性をも向上させることができる。
Thus, the chain tensioner 1
00 to the mounting seat portion 3 of the sprocket guard 30.
1 is fixed to the guide member 110 and a movable member 120 that allows the guide bar 44 to move in the front-rear direction, and the movable member 120 is attached in the distal direction of the guide bar 44. The brim portion having the coil spring 40 interposed so as to urge and having a shape along the cross-sectional shape of the rectangular chain tensioner mounting groove portion 32 formed in the mounting seat portion 31 in the movable portion 120. By integrally forming 123, the saw chain 42 can be attached and detached by a simple operation, and the tension of the saw chain 42 can be automatically adjusted. In addition, the chain tensioner 1
00 is easy to position, and the mounting seat 3 is surely attached.
It can be mounted in the inside of the housing 1, and the supporting stability and durability can be improved.

【0021】以上、本発明の一実施例を詳述したが、本
発明は、前記実施例に限定されるものではなく、特許請
求の範囲に記載された本発明を逸脱することなく種々の
設計変更を行うことができる。たとえば、前記チェーン
テンショナー取付溝部32の横断面形状、及び前記可動
部材120の鍔部123の側面形状は矩形状に限らず、
該鍔部123がその軸線回りに回動しない形状であれば
どのような形状であってもよい。
Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various designs can be made without departing from the present invention described in the claims. You can make changes. For example, the cross-sectional shape of the chain tensioner mounting groove portion 32 and the side surface shape of the collar portion 123 of the movable member 120 are not limited to a rectangular shape,
Any shape may be used as long as the collar 123 does not rotate about its axis.

【0022】また、前記チェーンテンショナー100
は、前記チェーンソー本体20側に取付けてもよく、前
記可動部材120の操作部122を前記ガイドバー44
の側面から離間する方向へ向けて斜に配設せしめて、操
作性を一層向上せしめることもできる。
Further, the chain tensioner 100
May be attached to the chain saw body 20 side, and the operating portion 122 of the movable member 120 may be attached to the guide bar 44.
The operability can be further improved by arranging them obliquely in the direction away from the side surface.

【0023】[0023]

【発明の効果】以上の説明から理解されるように、本発
明によれば、チェーンテンショナーを容易に機体に組込
むことができるとともに、チェーンテンショナーの支持
安定性及び耐久性を向上させることができる。
As can be understood from the above description, according to the present invention, the chain tensioner can be easily incorporated into the machine body and the stability and durability of the support of the chain tensioner can be improved.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例に係わるチェーンソーの要部
分解斜視図。
FIG. 1 is an exploded perspective view of a main part of a chainsaw according to an embodiment of the present invention.

【図2】図1で示したチェーンソーの要部拡大正面図。FIG. 2 is an enlarged front view of a main part of the chainsaw shown in FIG.

【図3】図2のIII-III 矢視断面図。FIG. 3 is a sectional view taken along the line III-III in FIG.

【図4】従来のチェーンソーの左側面図。FIG. 4 is a left side view of a conventional chainsaw.

【図5】図4のV-V 矢視断面図。5 is a sectional view taken along the line VV of FIG.

【図6】図4のVI-VI 矢視断面図。6 is a sectional view taken along the line VI-VI in FIG.

【符号の説明】[Explanation of symbols]

20…チェーンソー本体 30…スプロケットガード 31…取付座部 32…チェーンテンショナー取付溝部 40…コイルばね 42…ソーチェーン 44…ガイドバー 45…孔 100…チェーンテンショナー 110…案内部材 111…軸部 120…可動部材 121…筒状部 123…鍔部 123a…突起部 20 ... Chain saw body 30 ... Sprocket guard 31 ... Mounting seat 32 ... Chain tensioner mounting groove 40 ... Coil spring 42 ... Saw chain 44 ... Guide bar 45 ... Hole 100 ... Chain tensioner 110 ... Guide member 111 ... Shaft 120 ... Movable member 121 ... Cylindrical part 123 ... Collar part 123a ... Projection part

───────────────────────────────────────────────────── フロントページの続き (72)発明者 中山 良樹 東京都青梅市末広町1丁目7番地2 株式 会社共立内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiki Nakayama 1-7-2 Suehiro-cho, Ome-shi, Tokyo Kyoritsu Co., Ltd.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 チェーンソー本体20と、該チェーンソ
ー本体20の動力部を施蓋するスプロケットガード30
と、該スプロケットガード30と前記チェーンソー本体
20の間に挟持せしめられ、無端状のソーチェーン42
が外周部に巻回せしめられたガイドバー44と、該ガイ
ドバー44をその長手方向に沿って移動可能に係止し、
前記ソーチェーン42を張り方向に緊張せしめるチェー
ンテンショナー100を備えたチェーンソーにおいて、 前記チェーンテンショナー100は、前記ガイドバー4
4を挟持する取付座部31に長手方向位置不変に配設さ
れた案内部材110と、該案内部材110に相対移動可
能に取付けられるとともに、前記ガイドバー44をその
長手方向に移動可能にせしめる可動部材120と、該可
動部材120を前記ガイドバー44の先端方向に付勢す
るコイルばね40と、を前記取付座部31内に備えたこ
とを特徴とするチェーンソー。
1. A chain saw body 20 and a sprocket guard 30 for covering a power unit of the chain saw body 20.
And an endless saw chain 42 that is clamped between the sprocket guard 30 and the chain saw body 20.
A guide bar 44 wound around the outer peripheral portion, and the guide bar 44 is movably locked along its longitudinal direction,
A chain saw having a chain tensioner 100 for tensioning the saw chain 42 in the tension direction, wherein the chain tensioner 100 includes the guide bar 4
A guide member 110 arranged in the longitudinal direction of the mounting seat 31 that holds 4 and a movable member that is attached to the guide member 110 such that the guide bar 44 can move relative to the guide member 110 and that can move the guide bar 44 in the longitudinal direction. A chain saw comprising a member 120 and a coil spring 40 for urging the movable member 120 toward the tip end of the guide bar 44 in the mounting seat portion 31.
【請求項2】 前記案内部材110は軸部111を設け
るとともに、前記可動部材120は前記軸部111が挿
入されて摺動可能な筒状部121を設けてなり、さら
に、前記可動部材121は、前記取付座部31に形成さ
れたチェーンテンショナー取付溝部32に嵌合せしめら
れ、該チェーンテンショナー取付溝部32に対して前記
筒状部121の軸芯回りの回動を不能ならしめる側面形
状を有する鍔部123を備えたことを特徴とする請求項
1記載のチェーンソー。
2. The guide member 110 is provided with a shaft portion 111, the movable member 120 is provided with a cylindrical portion 121 into which the shaft portion 111 is inserted and slidable, and further, the movable member 121 is Has a side surface shape that is fitted into a chain tensioner mounting groove portion 32 formed in the mounting seat portion 31 and that does not allow rotation of the tubular portion 121 around the axis center with respect to the chain tensioner mounting groove portion 32. The chainsaw according to claim 1, further comprising a collar portion 123.
【請求項3】 前記鍔部123は、前記ガイドバー44
の孔45に係合せしめられる突起部123aを備えたこ
とを特徴とする請求項2記載のチェーンソー。
3. The guide bar 44 is provided on the flange 123.
The chain saw according to claim 2, further comprising: a protrusion 123 a that is engaged with the hole 45 of the.
JP06117029A 1994-05-30 1994-05-30 Chainsaw Expired - Fee Related JP3142439B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP06117029A JP3142439B2 (en) 1994-05-30 1994-05-30 Chainsaw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP06117029A JP3142439B2 (en) 1994-05-30 1994-05-30 Chainsaw

Publications (2)

Publication Number Publication Date
JPH07314402A true JPH07314402A (en) 1995-12-05
JP3142439B2 JP3142439B2 (en) 2001-03-07

Family

ID=14701688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP06117029A Expired - Fee Related JP3142439B2 (en) 1994-05-30 1994-05-30 Chainsaw

Country Status (1)

Country Link
JP (1) JP3142439B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6237229B1 (en) 1998-11-05 2001-05-29 Kioritz Corporation Chain saw guide bar with chain-tightening device
EP1679164A1 (en) * 2005-01-10 2006-07-12 Electrolux Home Products, Inc. Chainsaw bar adjustment assembly with breakaway adjustment pin
EP1961530A1 (en) * 2007-02-26 2008-08-27 PELLENC (Société Anonyme) Chainsaw equipped with a device for adjusting the tension of the cutting chain
JP2011025470A (en) * 2009-07-23 2011-02-10 Yamabiko Corp Chain saw
CN106378828A (en) * 2016-11-17 2017-02-08 舒华勇 Electric chain saw capable of automatically adjusting tightness of chain
CN106624150A (en) * 2017-01-20 2017-05-10 浙江博大实业有限公司 Electric chain saw

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6237229B1 (en) 1998-11-05 2001-05-29 Kioritz Corporation Chain saw guide bar with chain-tightening device
EP1679164A1 (en) * 2005-01-10 2006-07-12 Electrolux Home Products, Inc. Chainsaw bar adjustment assembly with breakaway adjustment pin
US7481000B2 (en) 2005-01-10 2009-01-27 Husqvarna Outdoor Products Inc. Chainsaw bar adjustment assembly with breakaway adjustment pin
EP1961530A1 (en) * 2007-02-26 2008-08-27 PELLENC (Société Anonyme) Chainsaw equipped with a device for adjusting the tension of the cutting chain
FR2912949A1 (en) * 2007-02-26 2008-08-29 Pellenc Sa CHAIN SAW HAVING A DEVICE FOR ADJUSTING THE VOLTAGE OF THE CUTTING CHAIN
WO2008122715A1 (en) * 2007-02-26 2008-10-16 Pellenc Chain saw equipped with a device for adjusting the tightness of the cutting chain
JP2010519076A (en) * 2007-02-26 2010-06-03 プラーン Chain saw with saw chain tension adjuster
US8434236B2 (en) 2007-02-26 2013-05-07 Pellenc (Societe Anonyme) Chain saw with tension adjustment
AU2008235391B2 (en) * 2007-02-26 2013-10-31 Pellenc Chain saw equipped with a device for adjusting the tightness of the cutting chain
JP2011025470A (en) * 2009-07-23 2011-02-10 Yamabiko Corp Chain saw
CN106378828A (en) * 2016-11-17 2017-02-08 舒华勇 Electric chain saw capable of automatically adjusting tightness of chain
CN106624150A (en) * 2017-01-20 2017-05-10 浙江博大实业有限公司 Electric chain saw

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