JPH0342262Y2 - - Google Patents

Info

Publication number
JPH0342262Y2
JPH0342262Y2 JP1987105091U JP10509187U JPH0342262Y2 JP H0342262 Y2 JPH0342262 Y2 JP H0342262Y2 JP 1987105091 U JP1987105091 U JP 1987105091U JP 10509187 U JP10509187 U JP 10509187U JP H0342262 Y2 JPH0342262 Y2 JP H0342262Y2
Authority
JP
Japan
Prior art keywords
tension spring
shoes
stoppers
spring
tension
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
Application number
JP1987105091U
Other languages
Japanese (ja)
Other versions
JPS6412939U (en
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 filed Critical
Priority to JP1987105091U priority Critical patent/JPH0342262Y2/ja
Publication of JPS6412939U publication Critical patent/JPS6412939U/ja
Application granted granted Critical
Publication of JPH0342262Y2 publication Critical patent/JPH0342262Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00Automatic clutches
    • F16D43/02Automatic clutches actuated entirely mechanically
    • F16D43/04Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • F16D43/18Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members with friction clutching members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00Automatic clutches
    • F16D43/02Automatic clutches actuated entirely mechanically
    • F16D43/04Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • F16D2043/145Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members the centrifugal masses being pivoting

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Description

【考案の詳細な説明】 [産業上の利用分野] 本考案は、クラツチ作用時に伸縮する引張りス
プリングが振れないように支承できるようにした
遠心クラツチのスプリング振れ止め装置に関す
る。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a spring rest device for a centrifugal clutch that can support a tension spring that expands and contracts when the clutch is operated so as to prevent it from swinging.

[従来の技術] 従来は、実公昭53−1471号公報などに見られる
ように、回転中心の反対側にそれぞれ一端を枢支
した円弧状の両シユー間に引張りスプリングを連
繋してなる遠心クラツチにおいて、遠心クラツチ
の作用時には、引張りスプリングは回転しながら
伸縮して余分な力がかかり、左右方向に振動する
ような構造になつていた。
[Prior Art] Conventionally, as seen in Japanese Utility Model Publication No. 53-1471, etc., a centrifugal clutch has been used in which a tension spring is connected between two arc-shaped shoes each having one end pivoted on the opposite side of the center of rotation. When the centrifugal clutch is activated, the tension spring expands and contracts while rotating, applying extra force and vibrating in the left-right direction.

[考案が解決しようとする問題点] そのため、引張りスプリングがそのように振動
して破損してしまう、といつた問題点を有してい
た。
[Problems to be Solved by the Invention] Therefore, there was a problem in that the tension spring vibrated and was damaged.

[問題点を解決するための手段] 本考案は、その問題点を解決し、引張りスプリ
ングが振れないようにしたものであり、そのた
め、両シユーの枢支側基部における対応する内側
面には両ストツパーをそれぞれ固設するととも
に、両ストツパーの外周面を引張りスプリングの
中間部両側面にそれぞれ近接できる曲面に形成し
て構成したものである。
[Means for solving the problem] The present invention solves the problem and prevents the tension spring from swinging.For this purpose, both shoes are provided with corresponding inner surfaces at the pivot side bases of both shoes. The stoppers are each fixedly installed, and the outer circumferential surfaces of both stoppers are formed into curved surfaces that can approach both sides of the intermediate portion of the tension spring.

[作用] したがつて、遠心クラツチが作動して両シユー
がそれぞれ一端側の支点を中心に回動すると、そ
の間に引張りスプリングが方向を変更しながら伸
長する状態となるが、両シユーとともに回動する
状態となる両ストツパーの彎曲した外周面が、引
張り方向が変化する引張りスプリングの中間部両
側面に、該引張りスプリングの引張り作用が阻害
されないよう曲面で良好に接触して、引張りスプ
リングが振動するのを防止できることになる。
[Operation] Therefore, when the centrifugal clutch operates and both shoes rotate around the fulcrum at one end, the tension spring changes direction and expands during that time, but it does not rotate together with both shoes. The curved outer circumferential surfaces of both stoppers, which are in a state of This will help prevent this.

[実施例] 次に、図面に示す実施例について説明する。[Example] Next, the embodiment shown in the drawings will be described.

第4図は刈払機の一部の断面図を示し、エンジ
ンに連設したクラツチケース6の先端側には、先
端側に刈刃を連設した操作桿7の後端部を連結
し、クラツチケース6内に軸架したドラム8のボ
ス9から前記操作桿7の内方に駆動軸10を延設
し、エンジン側からクラツチケース6内に延出し
た回転軸11の先端部にはシユー取付体12の中
心部を嵌合して固定し、前記回転軸11の軸心と
なる回転中心0をはさんで反対側に位置する前記
シユー取付体12の両端部には、円弧状両シユー
1a,1bの一端側となる枢支側基部3a,3b
の孔13,13にボルト14a,14bを挿着し
てそれぞれ枢着し、外周側にライニング15a,
15bを有する両シユー1a,1bの内周中央側
にそれぞれ形成した引掛孔16,16には引張り
スプリング2の両端を連繋して従来形構造同様に
構成する。
FIG. 4 shows a cross-sectional view of a part of the brush cutter. The rear end of the operating rod 7, which has a cutting blade connected to the front end, is connected to the front end of the clutch case 6, which is connected to the engine. A drive shaft 10 extends from a boss 9 of a drum 8 mounted in the case 6 to the inside of the operating rod 7, and a shoe is attached to the tip of a rotating shaft 11 extending from the engine side into the clutch case 6. The center part of the body 12 is fitted and fixed, and arc-shaped shoes 1a are provided at both ends of the shoe attachment body 12, which is located on the opposite side of the rotation center 0, which is the axis of the rotation shaft 11. , 1b are one end side of the pivot side bases 3a, 3b.
Bolts 14a, 14b are inserted into the holes 13, 13 and pivotally connected, respectively, and linings 15a, 14b are attached to the outer circumferential side.
Both ends of the tension spring 2 are connected to hook holes 16, 16 formed at the center of the inner periphery of both shoes 1a, 1b having 15b, respectively, so that the structure is similar to the conventional structure.

前記両シユー1a,1bの枢支側基部3a,3
bにおける対応する内側面には両ストツパー4
a,4bをそれぞれ固定するが、両ストツパー4
a,4bの内周面は基部3a,3bの彎曲した内
側面に接合できるよう曲面に形成するとともに、
両ストツパー4a,4bの外周面5a,5bは、
一端側から他端側にかけて径大となつて引張りス
プリング2の中間部両側面にそれぞれ近接できる
曲面に形成し、前記両基部3a,3bの内側面に
は間隔をおいてそれぞれ3つのねじ孔17a,1
7bを形成し、両ストツパー4a,4bに挿着し
たねじ18a,18bを各ねじ孔17a,17b
にそれぞれ螺挿して、ストツパー4a,4bを移
動調節自在に固定して構成する。
Pivot side bases 3a, 3 of both shoes 1a, 1b
Both stoppers 4 are provided on the corresponding inner surface of b.
a and 4b are fixed respectively, but both stoppers 4
The inner peripheral surfaces of a and 4b are formed into curved surfaces so that they can be joined to the curved inner surfaces of the bases 3a and 3b,
The outer peripheral surfaces 5a, 5b of both stoppers 4a, 4b are as follows:
It is formed into a curved surface that increases in diameter from one end side to the other end side so that it can approach both sides of the middle part of the tension spring 2, and three screw holes 17a are provided at intervals on the inner side surfaces of both bases 3a and 3b. ,1
7b, and screws 18a, 18b inserted into both stoppers 4a, 4b are inserted into each screw hole 17a, 17b.
The stoppers 4a and 4b are fixed by screwing into the respective screws so as to be movable and adjustable.

したがつて、遠心クラツチが作動して両シユー
1a,1bがそれぞれボルト14a,14b中心
に回動すると、その間の引張りスプリング2が回
転中心0上で方向を変更して左右方向に振動する
状態となるが、シユー1a,1bとともに回動す
ることになる両ストツパー4a,4bの彎曲外周
面5a,5bが、引張り方向が変化する引張りス
プリング2の中間部両側面に、該引張りスプリン
グ2の引張り作用が阻害されないよう曲面で良好
に接触して、引張りスプリング2が左右方向に振
動するのを良好に防止できることになる。
Therefore, when the centrifugal clutch operates and both shoes 1a and 1b rotate around the bolts 14a and 14b, respectively, the tension spring 2 between them changes direction on the rotation center 0 and vibrates in the left-right direction. However, the curved outer circumferential surfaces 5a, 5b of both stoppers 4a, 4b, which rotate together with the shoes 1a, 1b, exert a tensile action on both sides of the intermediate portion of the tension spring 2, where the tension direction changes. This means that the tension springs 2 are in good contact with each other on the curved surfaces so as not to be disturbed, and it is possible to effectively prevent the tension spring 2 from vibrating in the left-right direction.

なお、第3図に示すように、ねじ18aを他の
ねじ孔17aに螺挿して、ストツパー4aを移動
させると、引張りスプリング2との接触具合を調
節することができる。
As shown in FIG. 3, the degree of contact with the tension spring 2 can be adjusted by inserting the screw 18a into the other screw hole 17a and moving the stopper 4a.

[考案の効果] このように本考案は、遠心クラツチが作動して
引張りスプリング2が回転中心0上で向きを変え
ながら伸長する状態で、両シユー1a,1bとと
もに回動する両ストツパー4a,4bの曲面状外
周面5a,5bが、引張り方向が変化する引張り
スプリング2の中間部両側面に、該引張りスプリ
ング2の引張り作用が阻害されないよう曲面で良
好に接触して、引張りスプリング2が左右方向に
振動するのを良好に防止できることになり、従来
のように引張りスプリング2が破損するのを防止
できることになり、また、引張りスプリング2が
振動しないので、その引張り力も安定することに
なつて、始動時などのドラムへの接触開始時など
のミーテイングも安定しクラツチ性能を一段と向
上させることができ、簡単な構造にして好適に実
施できる特長を有する。
[Effects of the invention] As described above, the present invention provides both stoppers 4a and 4b that rotate together with both shoes 1a and 1b when the centrifugal clutch operates and the tension spring 2 expands while changing its direction on the rotation center 0. The curved outer circumferential surfaces 5a and 5b of are in good contact with both sides of the intermediate portion of the tension spring 2 whose tension direction changes so that the tension action of the tension spring 2 is not inhibited, and the tension spring 2 is moved in the left-right direction. This means that the tension spring 2 can be effectively prevented from vibrating, and the tension spring 2 can be prevented from being damaged as in the conventional case.Also, since the tension spring 2 does not vibrate, its tensile force is also stable, making it easier to start. It also stabilizes the meeting at the start of contact with the drum, etc., further improves clutch performance, and has the advantage of being of a simple structure and suitable for implementation.

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

第1図は本考案の実施例である要部の側面図、
第2図はその一部の拡大図、第3図は第2図の一
部で示すストツパーの取付位置変更状態の説明
図、第4図は刈払機の一部の断面図を示す。 0……回転中心、1a,1b……シユー、2…
…引張りスプリング、3a,3b……基部、4
a,4b……ストツパー、5a,5b……外周
面。
Figure 1 is a side view of the main parts of an embodiment of the present invention;
FIG. 2 is an enlarged view of a part of the brush cutter, FIG. 3 is an explanatory diagram of a changed state of the stopper mounting position shown in the part of FIG. 2, and FIG. 4 is a sectional view of a part of the brush cutter. 0... Center of rotation, 1a, 1b... Shu, 2...
...Tension spring, 3a, 3b...Base, 4
a, 4b... stopper, 5a, 5b... outer peripheral surface.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 回転中心0の反対側にそれぞれ一端を枢支した
円弧状の両シユー1a,1b間に引張りスプリン
グ2を連繋してなる遠心クラツチにおいて、両シ
ユー1a,1bの枢支側基部3a,3bにおける
対応する内側面には両ストツパー4a,4bをそ
れぞれ固設するとともに、両ストツパー4a,4
bの外周面5a,5bを前記引張りスプリング2
の中間部両側面にそれぞれ近接できる曲面に形成
して構成したことを特徴とするスプリング振れ止
め装置。
In a centrifugal clutch in which a tension spring 2 is connected between two arc-shaped shoes 1a and 1b, each having one end pivoted on the opposite side of the rotation center 0, the correspondence between the pivot side bases 3a and 3b of both shoes 1a and 1b Both stoppers 4a, 4b are fixedly installed on the inner surface of the
The outer peripheral surfaces 5a, 5b of b are connected to the tension spring 2
A spring steady rest device characterized in that it is formed into a curved surface that can be approached on both sides of the intermediate portion of the spring.
JP1987105091U 1987-07-08 1987-07-08 Expired JPH0342262Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987105091U JPH0342262Y2 (en) 1987-07-08 1987-07-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987105091U JPH0342262Y2 (en) 1987-07-08 1987-07-08

Publications (2)

Publication Number Publication Date
JPS6412939U JPS6412939U (en) 1989-01-24
JPH0342262Y2 true JPH0342262Y2 (en) 1991-09-04

Family

ID=31337397

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987105091U Expired JPH0342262Y2 (en) 1987-07-08 1987-07-08

Country Status (1)

Country Link
JP (1) JPH0342262Y2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531471U (en) * 1976-06-22 1978-01-09

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4717037U (en) * 1971-04-01 1972-10-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531471U (en) * 1976-06-22 1978-01-09

Also Published As

Publication number Publication date
JPS6412939U (en) 1989-01-24

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