Centrifugal clutch

A centrifugal clutch and fitting hole technology, applied in clutches, automatic clutches, mechanical equipment, etc., can solve the problems of thickening of the wall, thickening of the wall thickness of the brake shoe, hindering the thinning and lightening of the centrifugal clutch, etc. The effect of thinning and preventing loosening

Inactive Publication Date: 2011-02-16
HUSQVARNA ZENOAH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if such a stopper is provided on the brake shoe side, there is a problem that the wall thickness of the brake shoe becomes thicker, which hinders the thinning and weight reduction of the centrifugal clutch, etc.
[0006] In addition, in the brake shoe, since the stopper part is provided at the fitting part with the convex part, the wall thickness of the fitting part is thickened, so there is a problem that the center of gravity of the brake shoe is close to the center of rotation, and the brake shoe due to the centrifugal force The rotation of the

Method used

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  • Centrifugal clutch
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Examples

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Embodiment Construction

[0017] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0018] figure 1 It is a front view showing the centrifugal clutch 10 of this embodiment, figure 2 is a partially cutaway side view of the centrifugal clutch 10, image 3 It is a rear view showing the back side of the main part of the centrifugal clutch 10, Figure 4 It is an exploded perspective view showing main parts of the centrifugal clutch 10 .

[0019] The centrifugal clutch 10 has a pendulum structure and includes: a driving part 12 having a hub part 11 screwed to one end of an engine crankshaft (output shaft) not shown in the figure, and three brake shoes rotatably supported on the driving part 12. 13. A coil spring 14 connecting the brake shoes 13 disposed close to each other in the circumferential direction, and a clutch drum 15 rotated by the contact of the brake shoes 13 . In addition, the centrifugal clutch 10 of this embodiment is used for a chain s...

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Abstract

A pendulum centrifugal clutch in which shoes (13) are installed rotatably around boss parts (17). A fitting hole (19) rotatably fitted onto each of the boss parts (17) is formed in each of the shoes (13). The fitting hole (19) is made in the thin part (32) of the shoe thinned from both sides of the shoe body part (29) in the thickness direction, and the thin-walled part (32) is interposed betweenthe flange part (20) formed at the axial one end of the boss part (17) and a plate (21) put on the boss part (17) from the axial other end.

Description

technical field [0001] The present invention relates to a centrifugal clutch used on the power transmission part of a portable working machine Background technique [0002] At present, as the power source of such portable work machines as chain saws, small-displacement engines are mostly used, and the power from the engine is transmitted to the sprocket wheel wound with the saw chain through the centrifugal clutch. Various types of centrifugal clutches have been developed, and a pendulum type type is known as a type used in portable work machines that are expected to be small and lightweight. An arm, a boss provided at the front end of the arm, and a shoe rotatably fitted to the boss (for example, Patent Document 1). [0003] In the centrifugal clutch described in this patent document 1, in order to prevent the brake shoe from coming out of the convex part, instead of using the original E-ring and other locking devices, a protruding part integrally provided on the convex pa...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): F16D43/18
CPCF16D43/18F16D2043/145
Inventor原田笃
OwnerHUSQVARNA ZENOAH