CN101580094B

CN101580094B - Front damping device of motorcycle

Info

Publication number: CN101580094B
Application number: CN2009103023042A
Authority: CN
Inventors: 王晓庆
Original assignee: Chongqing Longxin Engine Co Ltd
Current assignee: Chongqing Longxin Engine Co Ltd
Priority date: 2009-05-14
Filing date: 2009-05-14
Publication date: 2010-11-10
Anticipated expiration: 2029-05-14
Also published as: CN101580094A

Abstract

The invention discloses a front damping device of a motorcycle, comprising handle tubes, an upper linkage plate, a lower linkage plate, a steering shaft and a first damping device. One end of the first damping device is fixedly connected with the lower linkage plate, and the other end thereof is fixedly connected with a front wheel spindle. The damping device also comprises a second damping device, two ends of which are respectively and movably connected with the upper linkage plate and the lower linkage plate. The damping device has the advantages that 1. a front fork system changes rigid connection into flexible connection so as to improve the comfortableness of the motorcycle, particularly in the case that the road condition of a roadway is poor; 2. the two-stage damping provides longercompression space for a front fork; 3. a primary damping device fixing point is closer to the axle center of a steering column, thereby improving the steering flexibility and enlarging an outreach regulating range; and 4. when a secondary damping acts effectively, the contact point between a front wheel and the ground is far away from the mass center of the whole motorcycle, thereby improving the riding safety (mainly preventing forward turnover).

Description

Front damping device of motorcycle

Technical field

The present invention relates to a kind of two-wheeled shock absorption device, just be meant a kind of structural arrangement of front damper of motorcycle concretely.

Background technology

Motor bike is indispensable vehicle in the modern life, it have small and exquisite flexibly and fast advantage, be subjected to liking of people in city and rural area.Existing front damping device of motorcycle structure generally all is to be connected with the front wheel spindle of motor bike after being fixedly installed on the lower linking plate, but such texture ratio is more single, on the abominable road surface or under the situation of emergency situation motor bike driver and rear rider is being had very big impulsive force.Therefore there is following shortcoming in this structure: 1, so preceding shock-damping structure is for being rigidly connected, and the ground-surface impact capacity is poor for alleviating; 2, since between preceding damping and the last lower linking plate for being rigidly connected, when motor bike run into that needs brake or the situation of road surface situation difference under, compression direction was single when front shock absorber worked; 3, because front shock absorber for being rigidly connected, when playing cushioning effect, reaches compression limit easily; The situation of turning over before also can causing the front shock absorber body in some cases because collide and occur bending and deformation or going up the lower linking plate crackle or cause vehicle is fallen navigating mate and is flown out.4, this structure is owing to be subjected to the restriction of structure, so it stretches apart from setting range little.Therefore, for above these problems, wish to obtain certain improvement.

Summary of the invention

In view of above problem; the purpose of this invention is to provide a kind of front damping device of motorcycle; adopt the secondary shock absorption device; to solve the deficiency of previous status motor bike, the structure that damping effect that damping can both be satisfied in all cases before the raising motor bike and expectation reach protection motor bike itself is not damaged.

For achieving the above object, technical scheme provided by the present invention is: a kind of front damping device of motorcycle, include handle pipe, upper connective plate, lower linking plate, steering shaft and first bumper, and described steering shaft and lower linking plate are hinged; Described first bumper, one end is captiveed joint with lower linking plate, and the other end is captiveed joint with front wheel spindle, also is provided with second bumper between described upper connective plate and the lower linking plate, is hinged between second bumper and upper connective plate and the lower linking plate.

Further improve and be: described lower linking plate structure is divided into three parts, with second bumper bonded assembly left side body, right body and the intermediate of captiveing joint with steering shaft.

Further improve and be: described intermediate is connected with right body with left body by the form of bearing pin, and left body and right body can rotate with respect to intermediate.

Further improve and be: described steering shaft is captiveed joint with described upper connective plate respectively, captives joint with the intermediate of lower linking plate.The two ends of described upper connective plate and lower linking plate are provided with and the second bumper bonded assembly U font structure, and the both sides of U font structure are provided with bolt hole.

Further improve and be: left body and right body are provided with in aggregates, at the intermediate that the midway location setting is captiveed joint with steering shaft, intermediate is arranged on the body of the left and right sides in the mode of bearing pin, and can rotate relative to left and right sides body.

Further improve and be: the axle center of the intermediate of described and steering shaft bonded assembly lower linking plate and with the center of the mounting hole of the left body of the first bumper bonded assembly lower linking plate and right body substantially on the same line.

The present invention is provided with the advantage that is had like this: 1, the change of front fork system is rigidly connected to flexibly connecting, and improves the damping effect of motor bike, the road surface that traveling comfort, particularly road conditions are relatively poor; 2, the two-stage damping provides longer compression space for front fork; Can extenuate ground-surface and impact, avoid lower linking plate on bumper and the motor bike is caused damage.3, the more close steering column heart of one-level bumper attachment point, steering flexibility improves, and the castor setting range is wider; Can make front-wheel and ground contact point improve safety (turning over before mainly preventing) when 4, the secondary damping produces effect away from the car load centroid position.

Description of drawings:

Below in conjunction with the drawings and specific embodiments the present invention is described in further detail, but content of the present invention be not limited to for embodiment.

Fig. 1 is a structural representation of the present invention.

Fig. 2 is the structural representation of the design's lower linking plate.

Fig. 3 is the structural representation of the design's upper connective plate.

The specific embodiment:

As Fig. 1, Fig. 2, a kind of front damping device of motorcycle shown in Figure 3, include handle pipe 1, upper connective plate 2, lower linking plate 4, steering shaft 6 and first bumper 5, steering shaft 6 is hinged with lower linking plate 4, one end of first bumper 5 is captiveed joint with right body with the left body of lower linking plate 4, and the other end is captiveed joint with the motorcycle front-wheel axle; Also be provided with second bumper 3 between upper connective plate 2 and the lower linking plate 4, the two ends of described second bumper 3 are hinged with upper connective plate 2 and lower linking plate 4 respectively.Described first bumper 5 and second bumper 3 respectively have two, on the basis of the design's damping before original motor bike, changed the mounting means of first bumper, and the connection mode of steering shaft and lower linking plate, second bumper is set between upper connective plate and lower linking plate then, the structure of She Zhiing is exactly the buffering that can increase motor bike when motor bike in motion process or in emergency brake like this, effect of easing stress, allow chaufeur, occupant's sensation wants much comfortable, can also avoid the motor bike first bumper cylindrical shell to deform and go up the situation that crackle appears in lower linking plate, reach the service life that prolongs motorcycle part.

As shown in Figure 2, the structure of motor bike lower linking plate 4 is divided into three parts, left body 43, right body 41, intermediate 42.Intermediate 42 is captiveed joint with steering shaft 6, so that direction of transfer is the steering effort that passes over, and then power is passed to first bumper 5.Intermediate 42 links together with the form of bearing pin and left body and right body, and intermediate 42 can be with respect to

left body

43 and 41 rotations of right body.The purpose of She Zhiing is to allow motor bike one-level bumper 5 exactly when being compressed to end position like this, and two stage impact damper 3 begins to work, and allows second bumper and lower linking plate relatively rotate, and like this, second bumper could play cushioning effect.The left body 43 of lower linking plate 4 and right body 41 are provided with the structure with the second bumper bonded assembly U font, and the both sides of U font structure are provided with the bolt hole that mounting shock absorber is used.

With reference to figure 3, the structure of upper connective plate 2 as shown in the figure is, is provided with the hole that is communicated with steering shaft 6 at the middle part of upper connective plate 2, and its two ends are provided with the structure that is the U font that second bumper is installed.With the convenient Connection Block that second bumper is installed.This upper connective plate 2 has also changed the connection mode with original bumper, and it is porose that former structure is that upper connective plate is provided with, and can allow an end of first bumper, 5 peaces pass this hole and fastening.Present structure is to be arranged to the shape of U font at the two ends of upper connective plate, in the both sides of U type through hole is set then, passes so that the bolt of second bumper 3 is installed.And also flow between the junction of second bumper 3 and upper connective plate 2 gapped so that can rotate between second bumper 3 and the upper connective plate.

The left body 43 of lower linking plate and right body 41 can also be arranged to an integral body (not drawing among the figure), the intermediate of captiveing joint with steering shaft is set in the relevant position, and intermediate still are that the bearing pin mode is connected with left and right sides body.Another mode uses a middleware (not drawing among the figure) to connect exactly, when described lower linking plate left side body and right body when being separate, with intermediate with left body with after right body is connected, can rotate mutually between intermediate and the left and right sides body, in order to increase the conformability between the body of the left and right sides, just with middleware left body and right body are fixed up, allow left body become as a whole with right body, they can only intermediate be rotatable relatively together; Be provided with the installation that is beneficial to first, second bumper like this.

The present invention is keeping outside the original shock-damping structure, also increased by second bumper 3 in addition, adopt the two-stage bumper to provide longer compression space for motorcycle damping, because the existence of second bumper is arranged, when vibrations take place in motor bike, when first bumper is compressed to the limit, because the inertia of motor bike, impulsive force still also exists, at this moment, lower linking plate is intermediate generation rotation relatively just, thereby oppresses second bumper, continue to produce cushioning effect, because first bumper has certain angle of inclination when mounted, motorcycle front-wheel drives first bumper and can move forward, thereby can make front-wheel and ground contact point away from the car load centroid position, prevent to turn over before the motor bike, thereby improve the motor bike drive safety.

With reference to shown in Figure 2, the basic in-line in axle center of the left body of the lower linking plate 4 that links to each other with first bumper 5 with the axle center of the intermediate 42 of steering shaft 6 captive joints and the mounting hole of right body, thereby make the nearest of bumper 5 and steering shaft 6 of winning, thereby improved the alerting ability that turns to, castor has been had a wider design space also can for the designer when setting range designs.

Such during situation during the design's work: the left body 43 of lower linking plate, right body 41 are connected with steering shaft 6 by intermediate 42, and lower linking plate can rotate according to the applying working condition needs when bumper is worked.Second bumper 3 passes through bolted connection with the left body 43 of upper connective plate 2 and lower linking plate 4, right body 41 respectively, and the junction is for flexibly connecting.Second bumper 3 has certain pre-compression force, when guaranteeing that motor bike moves under general operating mode, first bumper 5 just compresses and does not rotate, when motor bike runs into limiting condition: run into emergency brake, during bigger concavo-convex road surface, first bumper 5 is compressed to ultimate limit state, because first bumper 5 is provided with certain angle of inclination with front-wheel, when being compressed to end position, naturally produce and reverse, driving lower linking plate left and right sides body rotates with respect to intermediate, thereby second bumper 3 is produced compression, and the impulsive force that vehicle is passed over plays the work of a buffering in order to reach the effect that vehicle is produced damping.

The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Any those skilled in the art, all still belong in the protection domain of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.

Claims

1. a front damping device of motorcycle includes handle pipe (1), upper connective plate (2), lower linking plate (4), steering shaft (6) and first front shock absorber (5), and it is characterized in that: described steering shaft and lower linking plate are hinged; Described first front shock absorber (5) one ends are captiveed joint with lower linking plate (4), the other end is captiveed joint with front wheel spindle, also be provided with second bumper (3) between described upper connective plate (2) and lower linking plate (4), the two ends of described second bumper (3) respectively and be hinged between upper connective plate (2) and the lower linking plate (4).

2. front damping device of motorcycle according to claim 1, it is characterized in that: described lower linking plate (4) structure is divided into three parts, with second bumper (3) bonded assembly left side body (43) and right body (41) and with steering shaft (6) pivotally attached intermediate (42).

3. front damping device of motorcycle according to claim 2, it is characterized in that: described intermediate (42) is connected with right body (41) with left body (43) by the form of bearing pin, and left body (43) can rotate relative to intermediate (42) with right body (41).

4. front damping device of motorcycle according to claim 1 is characterized in that: the two ends of described upper connective plate (2) and lower linking plate (4) are provided with the font structure with second bumper (3) bonded assembly U, in the both sides of U font structure bolt hole are set also.

5. according to claim 2 or 3 described front damping device of motorcycle, it is characterized in that: the left body (43) of described lower linking plate (4) and right body (41) are provided with in aggregates, are arranged to left body (43) and right body (41) hinged with the form of bearing pin with steering shaft (6) bonded assembly intermediate.