JPH04316723A - Centrifugal clutch - Google Patents
Centrifugal clutchInfo
- Publication number
- JPH04316723A JPH04316723A JP11114491A JP11114491A JPH04316723A JP H04316723 A JPH04316723 A JP H04316723A JP 11114491 A JP11114491 A JP 11114491A JP 11114491 A JP11114491 A JP 11114491A JP H04316723 A JPH04316723 A JP H04316723A
- Authority
- JP
- Japan
- Prior art keywords
- mass body
- spring
- clutch
- centrifugal
- centrifugal clutch
- 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.)
- Pending
Links
- 239000002783 friction material Substances 0.000 claims description 6
- 230000007423 decrease Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000005484 gravity Effects 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
- F16D43/14—Automatic 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
- F16D43/18—Automatic 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は遠心力によって質量体
を移動させることにより、駆動部材と従動部材とを連結
し、あるいはその連結を解く遠心クラッチに関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a centrifugal clutch that connects or disconnects a driving member and a driven member by moving a mass body using centrifugal force.
【０００２】0002
【従来の技術】遠心クラッチは、所定の回転数以上でト
ルクの伝達を行い、あるいは反対にトルクの伝達を阻止
する手段として様々な分野で使用されており、その一例
としてダンパ機構に内蔵した遠心クラッチが実開昭６１
−１６０３４３号公報に記載されている。これを模式的
に示すと図５のとおりであって、トルクの与えられる駆
動部材１とこの駆動部材１によって回転させられる従動
部材２とが同心円状に配置されており、その従動部材２
の内周部には、円周方向に一定の間隔をあけて複数の凹
部３が形成され。この凹部３に遠心クラッチ４が収容さ
れている。すなわち凹部３は従動部材２の内周面に開口
しており、ここに慣性質量体（例えば金属ブロック）５
が半径方向に移動自在に収容されている。この質量体５
の内面すなわち駆動部材１側の面にクラッチライニング
６が施され、またこれとは反対側すなわち半径方向で外
側にスプリング７が配置されており、このスプリング７
で慣性質量体５を駆動部材１に向けて押圧してクラッチ
ライニング６を駆動部材１の外周面に摩擦接触させてい
る。[Prior Art] Centrifugal clutches are used in various fields as means for transmitting torque at or above a predetermined rotation speed, or conversely, for preventing torque transmission.One example is a centrifugal clutch built into a damper mechanism. The clutch was first introduced in 1986.
It is described in the publication No.-160343. This is schematically shown in FIG. 5, in which a driving member 1 to which torque is applied and a driven member 2 rotated by this driving member 1 are arranged concentrically.
A plurality of recesses 3 are formed at regular intervals in the circumferential direction on the inner periphery of the recess. A centrifugal clutch 4 is accommodated in this recess 3. That is, the recess 3 is open to the inner circumferential surface of the driven member 2, and an inertial mass body (for example, a metal block) 5 is inserted therein.
is housed so as to be movable in the radial direction. This mass body 5
A clutch lining 6 is provided on the inner surface, that is, the surface on the drive member 1 side, and a spring 7 is arranged on the opposite side, that is, on the outside in the radial direction.
The inertial mass body 5 is pressed toward the drive member 1 to bring the clutch lining 6 into frictional contact with the outer peripheral surface of the drive member 1.
【０００３】0003
【発明が解決しようとする課題】ところで遠心力は回転
半径および質量に比例し、また角速度の二乗に比例する
から、上述した遠心クラッチ４では慣性質量体５に作用
する遠心力がスプリング７の弾性力より大きくなった時
点でクラッチライニング６が駆動部材１の外周面から離
れ、解放状態となる。また解放状態から係合状態になる
場合、回転角速度が次第に低下して慣性質量体５に作用
する遠心力がスプリング７の弾性力より小さくなった時
点で、慣性質量体５が駆動部材１の外周面に押し付けら
れる。その場合、慣性質量体５は、スプリング７が圧縮
されている寸法だけ回転半径が大きくなっているから、
係合状態から解放状態になるときよりも大きい遠心力が
作用し、したがってクラッチ４が係合するときと解放す
るときとの回転角速度（回転数）は若干相違する。[Problems to be Solved by the Invention] Since centrifugal force is proportional to the radius of rotation and mass, and also proportional to the square of the angular velocity, in the above-mentioned centrifugal clutch 4, the centrifugal force acting on the inertial mass body 5 is caused by the elasticity of the spring 7. When the force becomes larger than the force, the clutch lining 6 separates from the outer circumferential surface of the drive member 1 and enters the released state. In addition, when changing from the released state to the engaged state, when the rotational angular velocity gradually decreases and the centrifugal force acting on the inertial mass body 5 becomes smaller than the elastic force of the spring 7, the inertial mass body 5 moves around the outer periphery of the drive member 1. pressed against the surface. In that case, the radius of rotation of the inertial mass body 5 is increased by the dimension in which the spring 7 is compressed.
A larger centrifugal force acts than when the clutch 4 changes from the engaged state to the disengaged state, and therefore the rotational angular velocity (rotational speed) when the clutch 4 is engaged and when it is disengaged is slightly different.
【０００４】すなわち図６において回転数ＮがＮ１ に
達するまでは、慣性質量体５が駆動部材１の外周面に接
触していて、回転半径ｒが最も小さい状態にあり、した
がって図６に示すように遠心力Ｆはｒｏ 線に沿って増
加し、遠心力Ｆがバネ力Ｋ０ より大きくなると、慣性
質量体５はスプリング７を圧縮して外周側に移動するか
ら、その回転半径ｒが大きくなり、遠心力Ｆはｒ１線に
沿って変化する。そのため回転数が次第に低下し、Ｎ１
より小さいＮ２ まで低下すると、遠心力Ｆがバネ力
Ｋ０ より小さくなるので、慣性質量体５がスプリング
７によって駆動部材１に押し付けられ、係合状態となる
。That is, in FIG. 6, until the rotational speed N reaches N1, the inertial mass body 5 is in contact with the outer peripheral surface of the drive member 1, and the rotation radius r is at its minimum, so as shown in FIG. The centrifugal force F increases along the ro line, and when the centrifugal force F becomes larger than the spring force K0, the inertial mass body 5 compresses the spring 7 and moves toward the outer circumference, so its rotation radius r increases, The centrifugal force F changes along the r1 line. Therefore, the rotation speed gradually decreases, and N1
As the centrifugal force F becomes smaller than the spring force K0, the inertial mass body 5 is pressed against the drive member 1 by the spring 7 and becomes engaged.
【０００５】このように遠心クラッチは、所定の回転数
で係合あるいは解放するが、スペース上の制約で慣性質
量体５の移動量は極めて僅かであって零に近く、したが
って前述した解放時の回転数Ｎ１ と係合時の回転数Ｎ
２ との差は実質上殆んど無い。そのため従来の遠心ク
ラッチでは、Ｎ１ もしくはＮ２ に近い回転数では、
僅かな回転数の変化によって係合あるいは解放が頻繁に
繰返し生じ、その結果、クラッチライニング６の滑りお
よびそれに伴う摩耗が増大して耐久性が低下する問題が
あった。[0005] As described above, the centrifugal clutch engages or disengages at a predetermined rotation speed, but due to space constraints, the amount of movement of the inertial mass body 5 is extremely small, close to zero, and therefore Rotation speed N1 and rotation speed N when engaged
There is virtually no difference between 2 and 2. Therefore, with conventional centrifugal clutches, at rotational speeds close to N1 or N2,
Engagement and disengagement occur frequently due to slight changes in the rotational speed, resulting in increased slippage and associated wear of the clutch lining 6, resulting in reduced durability.
【０００６】この発明は上記の事情に鑑みてなされたも
ので、解放時の回転数と係合時の回転数との差を大きく
することのできる遠心クラッチを提供することを目的と
するものである。The present invention was made in view of the above-mentioned circumstances, and an object of the present invention is to provide a centrifugal clutch that can increase the difference between the number of revolutions when released and the number of revolutions when engaged. be.
【０００７】[0007]
【課題を解決するための手段】この発明は、上記の目的
を達成するために、相対回転可能な駆動部材と従動部材
との間に半径方向へ移動自在に配置された第１の質量体
と、その第１の質量体を介して前記駆動部材と従動部材
とのいずれか一方に押し付けられる摩擦材と、前記第１
の質量体をその回転中心側に向けて押圧する第１の弾性
部材とを備えた遠心クラッチにおいて、第２の質量体が
、該第２の質量体を回転中心側に押圧しかつ初期設定バ
ネ力が前記第１の弾性部材の初期設定バネ力より小さい
第２弾性部材により前記第１の質量体に相対移動可能に
取付けられていることを特徴とするものである。[Means for Solving the Problems] In order to achieve the above object, the present invention includes a first mass body disposed movably in the radial direction between a relatively rotatable driving member and a driven member. , a friction material that is pressed against either the driving member or the driven member via the first mass body, and the first
In the centrifugal clutch, the second mass body presses the second mass body toward the rotation center side and the first elastic member presses the second mass body toward the rotation center side. The present invention is characterized in that a second elastic member whose force is smaller than the initial spring force of the first elastic member is movably attached to the first mass body.
【０００８】[0008]
【作用】この発明の遠心クラッチは、第２の質量体が第
２の弾性部材を介して第１の質量体に取付けられている
から、摩擦材を取付けてある第１の質量体の実質上の重
心が変化する。すなわち回転数の増大に伴って遠心力が
大きくなり、第２の質量体に作用する遠心力がこれを支
持している第２の弾性部材の初期設定バネ力以上になる
と、第２の質量体が第２の弾性部材を撓ませて半径方向
で外側に移動する。その結果、二つの質量体の重心が半
径方向で外側に移動するから、回転半径の増大に伴って
遠心力が増大し、第１の弾性部材の初期設定バネ力より
大きくなってこれを撓ませて第１の質量体が移動する。
このように回転数が所定値を越えた状態では、重心が半
径方向で外側に変化しているから、作用する遠心力は回
転半径の大きい状態で推移する。したがって第１の質量
体が第１の弾性部材を撓ませて移動した回転数まで回転
数が低下しても、実質上の回転半径が大きくて、大きい
遠心力が作用しているから、第１の弾性部材によって第
１の質量体が移動させられることはない。回転数が更に
低下すると、遠心力の減少に伴って第１の質量体が第１
の弾性部材によって半径方向で内側に押されて元の位置
に戻り、しかる後、回転数の低下に伴って第２の質量体
が第２の弾性部材に押されて半径方向で内側に移動する
。[Operation] In the centrifugal clutch of the present invention, since the second mass body is attached to the first mass body via the second elastic member, substantially the first mass body to which the friction material is attached is The center of gravity changes. In other words, as the rotational speed increases, the centrifugal force increases, and when the centrifugal force acting on the second mass body exceeds the initial setting spring force of the second elastic member supporting it, the second mass body deflects the second elastic member to move radially outward. As a result, the centers of gravity of the two mass bodies move outward in the radial direction, and as the radius of rotation increases, the centrifugal force increases and becomes larger than the initial spring force of the first elastic member, causing it to deflect. The first mass body moves. When the number of rotations exceeds a predetermined value as described above, the center of gravity is changing outward in the radial direction, so the centrifugal force that acts remains in a state where the radius of rotation is large. Therefore, even if the rotational speed decreases to the rotational speed at which the first mass body moves by deflecting the first elastic member, the effective radius of rotation is large and a large centrifugal force is acting on the first mass body. The first mass body is not moved by the elastic member. When the rotational speed further decreases, the first mass body shifts to the first mass body due to the decrease in centrifugal force.
The second mass body is pushed radially inward by the elastic member and returns to its original position, and then, as the rotational speed decreases, the second mass body is pushed by the second elastic member and moves radially inward. .
【０００９】すなわち摩擦材を取付けてある第１の質量
体が第１の弾性部材を撓ませて半径方向で外側に移動す
る時の回転数と、これとは反対に半径方向で内側に押し
戻される時の回転数とに大きな差が生じる。In other words, the number of rotations when the first mass body to which the friction material is attached deflects the first elastic member and moves outward in the radial direction, and vice versa, the number of rotations when the first mass body to which the friction material is attached is pushed back inward in the radial direction. There is a big difference between the rotation speed and the time.
【００１０】0010
【実施例】図１はこの発明の一実施例を示す模式図であ
り、また図２はその作用を説明するための回転数と遠心
力との関係を示す線図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing the relationship between rotational speed and centrifugal force to explain its operation.
【００１１】図１において駆動部材１０と従動部材１１
とは同心円状に配置されており、その従動部材１１の内
周部に、駆動部材１０の外周面に対して接触・離隔する
（すなわち係合・解放する）遠心クラッチ１２が設けら
れている。この遠心クラッチ１２は、二つの質量体１３
，１４を有しており、図１に箱状に示してある質量体（
仮に主質量体とする）１３の内周面（駆動部材１０の外
周面に対向する面）にクラッチライニング１５が取付け
られ、またこれとは反対側で従動部材１１の内面との間
には、主質量体１３を駆動部材１０側に押圧する第１ス
プリング１６が設けられている。また主質量体１３の内
部には、他方の質量体１４（仮に副質量体とする）１４
が収容されており、この副質量体１４はこれを半径方向
で内側（図１の下側）に押圧する第２スプリング１７に
よって主質量体１３の内部に取付けられている。ここで
第１スプリング１６として第２スプリング１７のバネ定
数以上のバネ定数のものが使用され、より具体的には組
付け状態での第１スプリング１６の押圧力（初期設定バ
ネ力）Ｋ１ が第２スプリング１７の組付け状態での押
圧力（初期設定バネ力）Ｋ２ 以上に設定されている。In FIG. 1, a driving member 10 and a driven member 11
A centrifugal clutch 12 is provided on the inner periphery of the driven member 11 to contact and separate from (that is, engage and release) the outer periphery of the drive member 10 . This centrifugal clutch 12 includes two mass bodies 13
, 14, and the mass body (shown as a box in FIG. 1)
A clutch lining 15 is attached to the inner circumferential surface of the main mass body 13 (the surface facing the outer circumferential surface of the driving member 10), and between it and the inner circumferential surface of the driven member 11 on the opposite side, A first spring 16 that presses the main mass body 13 toward the drive member 10 is provided. Also, inside the main mass body 13, the other mass body 14 (temporarily referred to as a sub mass body) 14
The secondary mass 14 is mounted inside the main mass 13 by a second spring 17 that presses it radially inward (downward in FIG. 1). Here, a spring constant greater than that of the second spring 17 is used as the first spring 16, and more specifically, the pressing force (initial setting spring force) K1 of the first spring 16 in the assembled state is the first spring 16. The pressing force (initial setting spring force) K2 of the two springs 17 in the assembled state is set to be greater than K2.
【００１２】上述した遠心クラッチ１２では、遠心力が
作用していないとき、もしくは遠心力が小さいときに、
主質量体１３が第１スプリング１６によって駆動部材１
０に押し付けられ、そのクラッチライニング１５が駆動
部材１０の外周面に摩擦接触することにより、駆動部材
１０と従動部材１１との間でトルクの伝達を行う。すな
わち係合状態となる。この場合、副質量体１４は第２ス
プリング１７に押されて主質量体１３の内部で最も内周
側に位置しているから、これらの質量体１３，１４を合
せた全体としての回転半径Ｒ０ は最も小さくなってい
る。したがってこの状態での遠心力Ｆは図２のＲ０ 線
に沿って回転数Ｎに従い推移する。In the above-described centrifugal clutch 12, when no centrifugal force is acting or when the centrifugal force is small,
The main mass body 13 is moved by the first spring 16 to the drive member 1 .
0 and the clutch lining 15 comes into frictional contact with the outer peripheral surface of the drive member 10, thereby transmitting torque between the drive member 10 and the driven member 11. In other words, it becomes an engaged state. In this case, since the sub mass body 14 is pushed by the second spring 17 and is located at the innermost side inside the main mass body 13, the rotation radius R0 of the mass bodies 13 and 14 as a whole is is the smallest. Therefore, the centrifugal force F in this state changes according to the rotational speed N along the R0 line in FIG.
【００１３】回転数Ｎが次第に増大してＮａ に達する
と、副質量体１４に作用する遠心力Ｆが、これを支持し
ている第２スプリング１７の押圧力Ｋ２ を越えるので
、副質量体１４が第２スプリング１７を圧縮して半径方
向で外側に移動する。その結果、質量体１３，１４の全
体としての重心が変わるために回転半径はＲ１ （＞Ｒ
０ ）になるが、図２のＲ１ 線上でのＮａ の回転数
に基づく遠心力Ｆは、第１スプリング１６の押圧力Ｆよ
り大きいから、主質量体１３が第１スプリング１６を圧
縮して半径方向で外側に移動する。すなわちクラッチラ
イニング１５が駆動部材１０の外周面から離隔し、遠心
クラッチ１２としては解放状態となる。When the rotational speed N gradually increases and reaches Na, the centrifugal force F acting on the sub-mass body 14 exceeds the pressing force K2 of the second spring 17 supporting it, so that the sub-mass body 14 compresses the second spring 17 and moves radially outward. As a result, since the center of gravity of the mass bodies 13 and 14 as a whole changes, the radius of rotation becomes R1 (>R
0 ), but since the centrifugal force F based on the rotation speed of Na on the R1 line in FIG. 2 is larger than the pressing force F of the first spring 16, the main mass body 13 compresses the first spring 16 and Move outward in direction. That is, the clutch lining 15 is separated from the outer peripheral surface of the drive member 10, and the centrifugal clutch 12 is in a released state.
【００１４】この解放状態における回転半径はＲ２ で
あって、遠心力Ｆは回転数Ｎに応じ図２のＲ２ 線に沿
って推移する。したがって回転数Ｎが前記のＮａ より
大きい値からＮａ に下がっても、その時の遠心力Ｆは
第１スプリング１６の押圧力Ｋ１ より大きいから、主
質量体１３は駆動部材１０から離れた位置にとどまって
いる。回転数ＮがＮａ より小さいＮｂ まで下がると
、遠心力Ｆが第１スプリング１６の押圧力Ｋ１ より小
さくなるので、主質量体１３が半径方向で内側に押され
、クラッチライニング１５が駆動部材１０の外周面に押
し付けられる。すなわち遠心クラッチ１２が係合する。
この状態では副質量体１４が第２スプリング１７を圧縮
して外周側に位置しているから、重心の回転半径はＲ１
になり、したがって遠心力Ｆは図２のＲ１ 線に沿っ
て推移する。そして回転数ＮがＮｃ まで下がると、副
質量体１４に作用する遠心力Ｆが第２スプリング１７の
押圧力Ｋ２ より小さくなるので、副質量体１４が第２
スプリング１７に押圧されて半径方向で内側に移動する
。The rotation radius in this released state is R2, and the centrifugal force F changes along the R2 line in FIG. 2 in accordance with the rotation speed N. Therefore, even if the rotational speed N decreases from a value larger than Na to Na, the centrifugal force F at that time is greater than the pressing force K1 of the first spring 16, so the main mass body 13 remains at a position away from the drive member 10. ing. When the rotational speed N decreases to Nb, which is smaller than Na, the centrifugal force F becomes smaller than the pressing force K1 of the first spring 16, so the main mass body 13 is pushed inward in the radial direction, and the clutch lining 15 is pressed against the drive member 10. Pressed against the outer surface. That is, the centrifugal clutch 12 is engaged. In this state, the secondary mass body 14 compresses the second spring 17 and is located on the outer peripheral side, so the rotation radius of the center of gravity is R1
Therefore, the centrifugal force F changes along the line R1 in FIG. Then, when the rotational speed N decreases to Nc, the centrifugal force F acting on the sub mass body 14 becomes smaller than the pressing force K2 of the second spring 17, so that the sub mass body 14
It is pressed by the spring 17 and moves inward in the radial direction.
【００１５】上述したように図１に示す遠心クラッチ１
２に作用する遠心力は、図２に太線で示すように変化し
、係合状態から解放状態への切換えはＮａ の回転数で
生じ、また解放状態から係合状態への切換えはＮｂ の
回転数で生じる。そして図１に示す遠心クラッチ１２で
は質量体１３，１４の全体としての重心の位置が変化す
ることによって図２のＲ０ 線とＲ２ 線との間隔が広
くなるため、解放回転数Ｎａ と係合回転数Ｎｂ との
差が大きくなる。換言すれば、ヒステリスシが大きくな
り、その結果、回転数のわずかな変化で遠心クラッチ１
２の係合と解放とが繰返し生じることを防止することが
できる。As mentioned above, the centrifugal clutch 1 shown in FIG.
The centrifugal force acting on 2 changes as shown by the bold line in Figure 2, and switching from the engaged state to the released state occurs at the rotation speed of Na, and switching from the released state to the engaged state occurs at the rotation speed of Nb. Occurs in numbers. In the centrifugal clutch 12 shown in FIG. 1, the distance between the R0 line and the R2 line in FIG. 2 becomes wider due to the change in the position of the center of gravity of the mass bodies 13 and 14 as a whole. The difference with the number Nb becomes large. In other words, the hysteresis increases, and as a result, a slight change in rotation speed causes centrifugal clutch 1 to
2 can be prevented from repeatedly engaging and disengaging.
【００１６】なお、前記副質量体１４をバネ定数の小さ
い第２スプリング１７で支持していることに伴う振動を
防止するために、例えば図３に示すように主質量体１３
が密閉構造であればその内部にオイル１８を充填し、そ
の粘性によって副質量体１４の振動を防止してもよい。
また主質量体１３が開放構造であれば、図４に示すよう
に副質量体１４と主質量体１３との間に摩擦材１９を介
在させ、その摩擦抵抗によって副質量体１４の振動を防
止してもよい。[0016] In order to prevent vibrations caused by supporting the sub-mass body 14 by the second spring 17 having a small spring constant, the main mass body 13 is
If it has a closed structure, the oil 18 may be filled inside to prevent vibration of the sub mass body 14 due to its viscosity. If the main mass body 13 has an open structure, a friction material 19 is interposed between the sub mass body 14 and the main mass body 13 as shown in FIG. 4, and the vibration of the sub mass body 14 is prevented by the frictional resistance. You may.
【００１７】また上記の実施例では回転数の増大に伴っ
て解放する遠心クラッチを例に採って説明したが、この
発明は、回転数の増大に伴って係合するタイプの遠心ク
ラッチに適用することもできる。さらにこの発明の遠心
クラッチは上記の実施例で示したように従動部材に設け
る替りに駆動部材に設けてもよい。Furthermore, although the above embodiment has been explained by taking as an example a centrifugal clutch that disengages as the number of revolutions increases, the present invention is applicable to a type of centrifugal clutch that engages as the number of revolutions increases. You can also do that. Further, the centrifugal clutch of the present invention may be provided on the driving member instead of being provided on the driven member as shown in the above embodiments.
【００１８】[0018]
【発明の効果】以上の説明から明らかなようにこの発明
の遠心クラッチによれば、解放状態に切換える回転数と
係合状態に切換える回転数との差が大きくなるので、僅
かな回転数の変化によって遠心クラッチが頻繁に係合状
態や解放状態に切替わったり、それに伴って滑りが多く
なったりすることがなくなり、その結果、クラッチライ
ニングの過剰な摩耗を防止して耐久性を向上させること
ができる。[Effects of the Invention] As is clear from the above explanation, according to the centrifugal clutch of the present invention, the difference between the rotational speed at which the clutch is switched to the disengaged state and the rotational speed at which the rotational speed is switched to the engaged state becomes large. This prevents the centrifugal clutch from frequently switching between the engaged and disengaged states and the resulting increased slippage, thereby preventing excessive wear on the clutch lining and improving durability. can.
【図１】この発明の一実施例を示す模式図である。FIG. 1 is a schematic diagram showing an embodiment of the present invention.
【図２】この発明の遠心クラッチにおける回転数と遠心
クラッチとの関係を示す線図である。FIG. 2 is a diagram showing the relationship between the rotation speed and the centrifugal clutch of the present invention.
【図３】この発明の他の実施例を示す模式図である。FIG. 3 is a schematic diagram showing another embodiment of the invention.
【図４】この発明の更に他の実施例を示す模式図である
。FIG. 4 is a schematic diagram showing still another embodiment of the present invention.
【図５】従来の遠心クラッチの一例を示す模式図である
。FIG. 5 is a schematic diagram showing an example of a conventional centrifugal clutch.
【図６】従来の遠心クラッチにおける回転数と遠心力と
の関係を示す線図である。FIG. 6 is a diagram showing the relationship between rotation speed and centrifugal force in a conventional centrifugal clutch.
１０ 駆動部材 １１ 従動部材 １２ 遠心クラッチ １３ 主質量体 １４ 副質量体 １５ クラッチライニング １６ 第１スプリング １７ 第２スプリング 10 Drive member 11. Driven member 12 Centrifugal clutch 13 Main mass body 14 Sub-mass body 15 Clutch lining 16 First spring 17 Second spring
Claims (1)
の間に半径方向へ移動自在に配置された第１の質量体と
、その第１の質量体を介して前記駆動部材と従動部材と
のいずれか一方に押し付けられる摩擦材と、前記第１の
質量体をその回転中心側に向けて押圧する第１の弾性部
材とを備えた遠心クラッチにおいて、第２の質量体が、
該第２の質量体を回転中心側に押圧しかつ初期設定バネ
力が前記第１の弾性部材の初期設定バネ力より小さい第
２弾性部材により前記第１の質量体に相対移動可能に取
付けられていることを特徴とする遠心クラッチ。1. A first mass body disposed movably in a radial direction between a relatively rotatable drive member and a driven member, and a first mass body that connects the drive member and the driven member via the first mass body. In the centrifugal clutch, the second mass body includes a friction material that is pressed against one of the two, and a first elastic member that presses the first mass body toward its rotation center.
The second mass body is mounted so as to be movable relative to the first mass body by a second elastic member that presses the second mass body toward the rotation center and has an initial setting spring force smaller than the initial setting spring force of the first elastic member. A centrifugal clutch characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11114491A JPH04316723A (en) | 1991-04-16 | 1991-04-16 | Centrifugal clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11114491A JPH04316723A (en) | 1991-04-16 | 1991-04-16 | Centrifugal clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04316723A true JPH04316723A (en) | 1992-11-09 |
Family
ID=14553575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11114491A Pending JPH04316723A (en) | 1991-04-16 | 1991-04-16 | Centrifugal clutch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04316723A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009216116A (en) * | 2008-03-07 | 2009-09-24 | Honda Motor Co Ltd | Vehicular centrifugal clutch device |
-
1991
- 1991-04-16 JP JP11114491A patent/JPH04316723A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009216116A (en) * | 2008-03-07 | 2009-09-24 | Honda Motor Co Ltd | Vehicular centrifugal clutch device |
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