CN2748644Y

CN2748644Y - Bearing type lower rocker of CG series engine for motorcycle

Info

Publication number: CN2748644Y
Application number: CN 200420003732
Authority: CN
Inventors: 余小玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-02-06
Filing date: 2004-02-06
Publication date: 2005-12-28
Anticipated expiration: 2014-02-06

Abstract

The utility model relates to a bearing type lower rocker arm of CG series engine for motorcycle which is applied to the CG series engine valve mechanism of the motorcycle. The utility model is characterized in that a bearing is assembled in a 'Y' shaped opening of a rocker arm body, and the bearing and the rocker arm body are connected by a bearing core shaft which is welded on the rocker arm body. The bearing which can rotate freely is contacted with a cam which can transmit the power to the rocker arm body by the bearing and the bearing core shaft, and therefore, the power can be transmitted to a tappet. The utility model realizes the rolling friction between a lower rocker arm and the cam, which can greatly improve the service life of the lower rocker arm and the cam of the motorcycle and reduce the noise generated by the running of the lower rocker arm.

Description

Motorcycle CG Engine Series bearing type lower shake-changing arm

Affiliated technical field

The utility model is a kind of CG Engine Series bearing type lower shake-changing arm that relates to technical field of motorcycles.

Background technique

The distribution device of the extensive CG Engine Series that adopts of China's motorcycle is the tappet rod type distribution device at present, the lower shake-changing arm of this mechanism and the friction between the cam are sliding friction, and this structure has caused that the wearing and tearing between lower shake-changing arm and the cam are big, the life-span is low and the big problem of noise during operation.

Summary of the invention

The utility model improves on the basis of original lower shake-changing arm, and a kind of bearing type lower shake-changing arm is provided, and has reduced the friction between lower shake-changing arm and the cam.

The technological scheme that its technical problem that solves the utility model adopts is: on the basis of original lower shake-changing arm lower shake-changing arm and cam contact position are made into " Y " font structure and increase a bearing (2), make the friction between lower shake-changing arm and the cam change rolling friction into by sliding friction.

The beneficial effects of the utility model are that the friction with former lower shake-changing arm and cam has changed rolling friction into by sliding friction, the noise that sends in the time of increasing substantially the working life of lower shake-changing arm and cam and reduce the lower shake-changing arm operation.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a form structure figure of the present utility model.

Fig. 2 is Fig. 1 A-A partial sectional view of the present utility model.

Fig. 3 is the assembling relationship figure between the utility model and tappet and the cam.

1. rocker body among the figure, 2. bearing, 3. bearing mandrel, 4, solder joint, 5. cam, 6. tappet, 7. lower shake-changing arm mandrel.

Embodiment

Fig. 1 and Fig. 2 have expressed the utility model rocker body (1) and cam (5) near holding " Y " font, bearing (2) is assemblied on the rocker body (1) by bearing mandrel (3), adopts spot welding (4) to prevent that bearing mandrel (3) from skidding off between bearing mandrel (3) and the rocker body (1).Bearing both can be that radial roller bearing also can be needle bearing or hollow roller.

Fig. 3 is the assembling relationship figure between the utility model and tappet and the cam: the utility model totally two be contained on the engine cylinder-body in pairs by lower shake-changing arm mandrel (7), cam (5) is given rocker body (1) by bearing (2) and bearing mandrel (3) with transmission of power, and rocker body (1) passes to two root elevator bars (6) again.

Claims

1, a kind of motorcycle CG Engine Series bearing type lower shake-changing arm, comprise rocker body (1), it is characterized in that: rocker body (1) holds " Y " font with cam (5) is close, and bearing (2) is assemblied in " Y " font opening of rocker body (1) by bearing mandrel (3).

2, motorcycle CG Engine Series bearing type lower shake-changing arm according to claim 1 is characterized in that: the bearing mandrel is assembled to back and rocker body welding in the rocking arm body opening.

3, motorcycle CG Engine Series bearing type lower shake-changing arm according to claim 1 is characterized in that: bearing both can be that radial roller bearing also can be needle bearing or hollow roller.