centrifugal clutch

Abstract

The present invention provides a centrifugal clutch capable of increasing the clutch capacity with a simple configuration. The centrifugal clutch 200 includes a drive plate 210 that is directly rotationally driven by engine driving force. The drive plate 210 includes a swing support pin 214 and a guide portion 216 , respectively. The swing support pin 214 is fitted in a pin sliding hole 221 formed in the clutch weight 220 to swingably support the clutch weight 220 . The guide portion 216 is formed in the shape of a notch or a hole and extends toward the rear and outward in the rotational driving direction of the drive plate 210 and extends obliquely, and contacts the protrusion 224 of the clutch weight 220 . The pin slide hole 221 is formed in the shape of an elongated hole allowing the displacement of the clutch weight 220 to the rear side in the rotational driving direction of the driving plate 210 . The protruding body 224 is formed by protruding from the clutch weight 220 .

Description

technical field [0001] The present invention relates to a centrifugal clutch, which blocks the transmission of the rotational driving force to the driven side before the engine reaches a predetermined number of rotations, and transmits the rotational driving force to the driven side when the engine reaches the predetermined number of rotations. Background technique [0002] Conventionally, in motorcycles, lawnmowers, etc., a centrifugal clutch is used that transmits rotational driving force to the driven side when the engine reaches a predetermined number of revolutions. For example, the following patent document 1 discloses a centrifugal clutch in which the clutch counterweight disposed on one drive plate gradually displaces toward the clutch housing side as the engine speed increases, and the clutch shoe disposed on the clutch counterweight shifts toward the clutch housing. Frictional contact with clutch weight. In addition, the following patent document 2 discloses a cen...

AI Technical Summary

Problems solved by technology

[0007] However, in the centrifugal clutch described in the above-mentioned Patent Document 1, the clutch weight gradually comes into frictional contact with the clutch cover as the engine speed increases, so there is a problem that the time from when the engine speed starts to increase until the clutch is in the connected state is relatively short. Longer and lower fuel consumption, and smaller clutch capacity

On the other hand, in the centrifugal clutch described in the above-mentioned Patent Document 2, the drive plate rotated by the rotation of the engine is composed of two pieces, such as the first drive plate and the second drive plate, so the structure is complicated due to the increase in the number of parts. problem of increased manufacturing burden

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