CN2727488Y

CN2727488Y - Automatic centrifugal clutch for motorcycle

Info

Publication number: CN2727488Y
Application number: CN 200420061289
Authority: CN
Inventors: 刘国伟; 聂颖
Original assignee: Chongqing Zongshen Technology Development and Research Co Ltd
Current assignee: Chongqing Zongshen Engine Manufacturing Co Ltd
Priority date: 2004-09-15
Filing date: 2004-09-15
Publication date: 2005-09-21
Anticipated expiration: 2014-09-15

Abstract

The utility model relates to an automatic centrifugal clutch for the motorcycle, mainly compising a driving plate, a driven plate, shoe blocks and a tension spring. The shoe blocks are fixed with friction plates. The number of the shoe blocks is two, which is positioned between the driving plate and the driven plate and connected with the driving plate through the connecting plate. The two ends of the two shoe blocks are interconnected by the tension spring. Nearly all of the friction plates of the clutch shoe blocks are simultaneously contacted with the driven plate in the engaging and disengaging process of the clutch shoe blocks and the driven plate. Thus the engaging and disengaging process of the friction plates on the shoe blocks and the driven plate are very smooth. The shoe blocks and the driven plate have a small speed range of engaging and disengaging, a small vibration of the engaging and disengaging process. Furthermore, the abrasion of the friction plates on the shoe blocks is uniform.

Description

The motorcycle automatic centrifugal clutch

Technical field

The utility model relates to a kind of motorcycle automatic centrifugal clutch.

Technical background

At present, motorcycle centrifugal formula automatic clutch generally adopts centrifugal shoe block type structure, and each hoof piece one end is hinged by bearing pin and driving disc, and the other end is connected with driving disc by reset tension spring.Along with engine speed raises, the centrifugal force of hoof piece overcomes the extension spring active force and rotates around bearing pin, friction plate on the hoof piece contacts with clutch driven plate, contact the frictional force that produces with driven disc by the friction plate on the hoof piece and transmit the engine crankshaft moment of torsion, when engine speed reduces, under the reset tension spring effect, the friction plate on the hoof piece separates with driven disc, no longer transmitting torque.This kind structure clutch configuration complexity, quality and volume are all bigger, and because an end of hoof piece is fixed, the other end is in quick condition, when the friction plate on the hoof piece contacts with driven disc, be to carry out successively from hoof piece floating end to fixed end, and also be to reduce successively from hoof piece floating end to fixed end in conjunction with the frictional force between back friction plate and the driven disc, thereby make the hoof piece bigger with the speed range of separating with the driven disc combination, it is comparatively serious that half hitch closes under the state frictional loss, in conjunction with and separation process vibration bigger, and cause the wearing and tearing of hoof piece upper friction plate inhomogeneous.

The model utility content

Technical problem to be solved in the utility model provides a kind of motorcycle automatic centrifugal clutch, makes the friction plate on the clutch hoof piece engage with separation process more steady with clutch driven plate.

Motorcycle automatic centrifugal clutch described in the utility model, mainly form by driving disc, driven disc, hoof piece and extension spring, be fixed with friction plate on the hoof piece, described hoof piece is two, between driving disc and driven disc, the hoof piece is connected with driving disc by connecting plate, and connecting plate one end is hinged by bearing pin and driving disc, the other end is hinged by bearing pin and hoof piece middle part, and two hoof pieces interconnect two hoof pieces at two ends with extension spring.

Driving disc has two with the connecting plate that each hoof piece is connected, and lays respectively at the both ends of the surface of driving disc and hoof piece.

Two hoof pieces positioned opposite in clutch.

The utility model is because the hoof piece is to be connected with driving disc by connecting plate, and the articulating point of connecting plate and hoof piece is at the medium position of hoof piece, the hoof piece is in the movement process under the centrifugal action like this, it not only will rotate around the articulating point of connecting plate and driving disc, and to rotate around the articulating point of hoof piece and connecting plate, make when the hoof piece engages with driven disc, friction plate on the hoof piece almost is all to contact with driven disc simultaneously, and it is also like this when separating, thereby make the friction plate on the hoof piece engage with separation process very steady with driven disc, so the hoof piece engages less with the speed range of separating with driven disc, joint and separation process vibration are less, and the wearing and tearing of hoof piece upper friction plate are even; This clutch configuration is simple, and quality and volume are all less, is particularly suitable for small displacement engine and uses.

Description of drawings

Now engaging accompanying drawing is described in further detail the utility model.

Fig. 1 looks schematic representation for the master of a kind of concrete structure of the utility model;

Fig. 2 is the cross-sectional schematic of A-A line among Fig. 1.

Embodiment

As shown in Figure 1 and Figure 2, this motorcycle automatic centrifugal clutch mainly is made up of driving disc 2, driven disc 1, hoof piece 3 and extension spring 10, driving disc 2, hoof piece 3 and extension spring 10 all are positioned at driven disc 1, driving disc 2 is an annulus piece, its center hole offers internal spline (matching with the bent axle external splines), driving disc 2 axis and driven disc 1 dead in line are the axis of this clutch.Described hoof piece 3 is two, be fixed with friction plate 4 on it, two hoof pieces 3 are between driving disc 2 and driven disc 1, positioned opposite in clutch, each hoof piece 3 is connected with driving disc 2 by two connecting plates 6, two connecting plates 6 lay respectively in the

pit

9,7 that the both ends of the surface of driving disc 2 and hoof piece 3 offer, two connecting plates, 6 one ends are hinged by bearing pin 8 and driving disc 2, the other end is hinged by bearing pin 5 and hoof piece 3 middle parts, in two hoof pieces, 3 opposite ends two hoof pieces 3 is interconnected respectively with two extension springs 10 between the two hoof pieces 3.

The working procedure of this clutch is: when engine operation, clutch driving plate 2 connects with engine crankshaft by spline and together rotates, and drives hoof piece 3 by connecting plate 6 again and rotates.When engine speed reached certain value, the active force that the centrifugal force that hoof piece 3 produces overcomes extension spring 10 began to moving near direction with driven disc 1, and rotates around two articulating points simultaneously; When engine speed further increased, hoof piece 3 was under centrifugal action, and the friction plate 4 on the hoof piece 3 almost all simultaneously contact with driven disc 1, thus realize hoof piece 3 and driven disc 1 engage driven disc 1 transmission bent axle moment of torsion.When engine speed reduced, hoof piece 3 centrifugal force reduced, and hoof piece 3 separates with driven disc 1 under extension spring 10 effects, no longer transmits the bent axle moment of torsion, and is back to original position.

Claims

1, a kind of motorcycle automatic centrifugal clutch, mainly form by driving disc (2), driven disc (1), hoof piece (3) and extension spring (10), be fixed with friction plate (4) on the hoof piece, it is characterized in that: described hoof piece (3) is two, be positioned between driving disc (2) and the driven disc (1), the hoof piece is connected with driving disc by connecting plate (6), connecting plate one end is hinged by bearing pin (8) and driving disc, the other end is hinged with hoof piece middle part by bearing pin (5), and two hoof pieces (3) interconnect two hoof pieces at two ends with extension spring (10).

2, motorcycle automatic centrifugal clutch according to claim 1 is characterized in that: the connecting plate (6) that driving disc (2) is connected with each hoof piece has two, lays respectively at the both ends of the surface of driving disc and hoof piece (3).

3, motorcycle automatic centrifugal clutch according to claim 1 and 2 is characterized in that: two hoof pieces (3) positioned opposite in clutch.