CN102303679A - Eccentric sleeve for rear damping rocker arm of motorcycle - Google Patents

Abstract

The invention provides an eccentric sleeve for a rear damping rocker arm of a motorcycle, and relates to a damping eccentric sleeve. In the invention, the rocker arm is sheathed with the eccentric sleeve instead of the traditional tie rod, which saves space and increases size of the rocker arm so as to further improve damping effect. The eccentric sleeve comprises a shaft sleeve which is equipped with an eccentric through hole, a balance through hole and a counterweight reducing through hole in an axial direction. The eccentric sleeve has the beneficial effects that the size of the rocker arm is increased in limited space so as to increase lever amplification coefficient of the rocker arm and further improve the damping effect.

Description

Motor bike is with back damping rocking arm eccentric bushing

Technical field

The present invention relates to a kind of motor bike with back damping rocking arm eccentric bushing.

Background technology

Rear shock absorber of motorcycle mainly contains two kinds of connection modes at present; A kind of is the direct connection mode; The upper end that is bumper is connected through bearing pin with vehicle frame; The lower end of bumper then is directly connected on the back chain stay of motor bike; Adopt this mode relatively simple for structure; But the force-bearing situation of bumper is bad, and the size and Orientation of power all alters a great deal, and the relative vehicle frame swing of bumper is big; Another kind is indirect connection mode; The lower end of bumper is connected to earlier on the rocking arm; And then through a pull bar be connected to the back chain stay on; The benefit that adopts indirect connection mode is that the amplitude of fluctuation with respect to vehicle frame is very little during operation for bumper; Therefore the force-bearing situation of bumper is better, but owing to receive the restriction in space, makes rocking arm less; Cause the lever coefficient of amplification of rocking arm less, and cause damping effect poor.

Summary of the invention

The object of the present invention is to provide a kind of motor bike with back damping rocking arm eccentric bushing; Replace traditional pull bar through assembling eccentric bushing on rocking arm, conserve space, the size of increase rocking arm; Reduce the swing of bumper to greatest extent, and then realize improving damping effect.

The technical solution adopted for the present invention to solve the technical problems is: motor bike is with back damping rocking arm eccentric bushing; Comprise axle sleeve; It is characterized in that described axle sleeve in axial direction is provided with eccentric through-hole, described axle sleeve in axial direction also is provided with the balance through hole and alleviates the counterweight through hole.

Described eccentric bushing is installed in behind the self-propelled vehicle on the damping rocking arm through eccentric through-hole.

The invention has the beneficial effects as follows: in limited space, increase the size of rocking arm, reduce the swing of bumper to greatest extent, thereby improve the lever coefficient of amplification of rocking arm, and then improve damping effect.

Description of drawings

Fig. 1 is a front view of the present invention,

Fig. 2 is the A-A view of Fig. 1.

Among the figure: 1 axle sleeve, 2 eccentric through-holes, 3 balance through holes, 4 alleviate the counterweight through hole

The specific embodiment

Like Fig. 1, shown in Figure 2, motor bike comprisesaxle sleeve 1 with back damping rocking arm eccentric bushing, and describedaxle sleeve 1 in axial direction is provided with eccentric through-hole 2, and describedaxle sleeve 1 in axial direction also is provided with balance through hole 3 and alleviates counterweight through hole 4; Described eccentric bushing is installed in behind the self-propelled vehicle on the damping rocking arm through eccentric through-hole 2.

The damping rocking arm is connected behind eccentric through-hole 2 and the self-propelled vehicle, makes the running orbit of eccentric through-hole 2 meet back damping attachment point running orbit, guaranteed back damping action along sliding.Balance through hole 3 reduces inertia when guaranteeing the eccentric bushing rotation, alleviates the weight that counterweight through hole 4 can alleviate eccentric sleeve.

Claims (2)

1. motor bike comprises axle sleeve with back damping rocking arm eccentric bushing, it is characterized in that described axle sleeve in axial direction is provided with eccentric through-hole, and described axle sleeve in axial direction also is provided with the balance through hole and alleviates the counterweight through hole.

2. motor bike according to claim 1 is characterized in that with back damping rocking arm eccentric bushing, and described eccentric bushing is installed in behind the self-propelled vehicle on the damping rocking arm through eccentric through-hole.

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