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Centrifugal clutch

A centrifugal clutch and clutch technology, applied to clutches, automatic clutches, transmissions, etc., can solve the problems of acceleration clutch shoe friction member wear, cam angle auxiliary thrust increase, auxiliary thrust increase, driving operation feel changes, etc., to prevent wear , smooth rotation and displacement, and improved sliding performance

Active Publication Date: 2020-11-27
FCC KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the centrifugal clutch described in the above-mentioned Patent Document 1 has a problem that the cam angle becomes small and the clutch weight pushes the clutch cover as the wear of the clutch shoes provided on the clutch weight against the clutch cover progresses. The auxiliary thrust increases and the feel of driving operation changes, and the wear of friction members such as clutch shoes is accelerated
[0008] Furthermore, the inventors of the present application have also found that in the centrifugal clutch in which the protrusions described in Patent Document 1 are formed of rollers and the driven portion is formed of a flat surface extending linearly, as the clutch shoe wears, The cam angle becomes smaller and the auxiliary thrust of the clutch weight pushing the clutch housing increases

Method used

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Examples

Experimental program
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Embodiment Construction

[0036] Below, refer to the attached Figure 1 Next, an embodiment of the centrifugal clutch of the present invention will be described. figure 1 It is a top sectional view schematically showing the configuration of the power transmission mechanism 100 including the centrifugal clutch 200 of the present invention. again, figure 2 By figure 1 A side view of the centrifugal clutch 200 is shown on line 2-2. The power transmission mechanism 100 provided with the centrifugal clutch 200 is a mechanical device as described later: mainly in a motorcycle such as a scooter, it is installed between the engine and the rear wheel as a driving wheel, and automatically changes its position relative to the engine. The speed reduction ratio of the number of revolutions transmits the rotational driving force to the rear wheel or blocks it.

[0037] (Configuration of Centrifugal Clutch 200)

[0038] This power transmission mechanism 100 mainly includes a transmission 101 and a centrifugal c...

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Abstract

Provided is a centrifugal clutch that is capable of either reducing an assist thrust or holding an assist thrust constant even when a clutch shoe is worn down. This centrifugal clutch 200 is providedwith a drive plate 210 that is rotary-driven by a driving force of an engine. The drive plate 210 is provided with pivot support pins 214 and plate-side cam bodies 218. The pivot support pins 214 eachpivotably support a clutch weight 230 by being fitted in an oblong-shaped pin slide hole 231 formed in the clutch weight 230. The plate-side cam bodies 218 are each formed of a cylindrical roller andare in contact with a weight-side cam body 235 of the clutch weight 230. The weight-side cam body 235 is formed to have a curved surface that results in the same cam angle, before and after wear of aclutch shoe 233 proceeds, when the clutch shoe 233 comes into contact with a cylindrical surface of an outer clutch sleeve 240.

Description

technical field [0001] The present invention relates to a centrifugal clutch which blocks the transmission of rotational driving force to the driven side until the engine reaches a predetermined number of rotations, and transmits the rotational driving force to the driven side when the engine reaches a predetermined number of rotations. side. Background technique [0002] Conventionally, in motorcycles, lawnmowers, and the like, centrifugal clutches that transmit rotational driving force to the driven side when the engine reaches a predetermined number of revolutions are used. For example, the following patent document 1 discloses a centrifugal clutch including: a drive plate that is rotationally driven by a rotational drive force from an engine; and a clutch weight that is rotatably supported on the drive plate and driven by The rotation of the plate is driven to open radially outward and push against the clutch cover. In this case, the centrifugal clutch is provided with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D43/18
CPCF16D43/18F16H9/18F16D2043/145F16D43/14F16D43/211
Inventor 青野薰横道友太木根悠太片冈真
Owner FCC KK