CN1861466B - Bicycle with rear suspension avoiding vibration - Google Patents

Abstract

A bicycle with rear suspension shock absorber is designed with low pedaling energy loss, low pedal kickback (kickback or pedal feedback) and low braking effect, and is equipped with a shock absorber, which is designed without compression Fixed (no sagsetting) and a cushioning design combined into a combination of low pedaling energy loss, low braking impact, low pedal kickback, comfort, low energy loss and extended shock absorbers regardless of standing or sitting riding A bike with rear suspension for life.

Description

Bicycle with rear suspension avoiding vibration

Technical field

The invention relates to a kind of bicycle, refer to especially a kind of bicycle with rear suspension avoiding vibration.

Background technology

The cycle frame that generally has incabloc function, to affect that pedal that shock-absorbing action, shock-absorbing action smooth degree (comfort level), shock-absorbing action cause recalcitrates (be Kickback: during the shock-absorbing action to its performance pointer in order to trample degradation of energy, Brake car, chain length changes the strength that causes crank and pedal to be stretched backward, causes the uncomfortable sensation of rider).

Wherein ， Brake car affects the action phenomenon of Shock absorber:

Before the Zai Brake car, as shown in Figure 1:

∑M _PF＝0

F _R×（a+b）＝mg×b

$F_R=\frac{b}{a+b}\mathrm{mg}$

During Hou Brake car, as shown in Figure 2:

∑F _X＝0，ma＝F _R’×μ

∑M _PF＝0

ma×h＋F _R’×（a+b）＝mg×b

F _R’×μ×h＋F _R’×（a+b）＝mg×b

${F_R}^{,}=\frac{b}{a+b+\mathrm{\μ}\×h}\mathrm{mg}$

Force action line angle degree, as shown in Figure 3:

$\tan \mathrm{\θ}=\frac{F_R-{F_R}^{\′}}{{F_R}^{\′}\×\mathrm{\μ}}$

$\tan \mathrm{\θ}=\frac{\frac{b}{a+b}\×\mathrm{mg}-\frac{b}{a+b+\mathrm{\μ}\×h}\×\mathrm{mg}}{\frac{b\×\mathrm{\μ}}{a+b+\mathrm{\μ}\×h}\×\mathrm{mg}}$

$\tan \mathrm{\θ}=\frac{\frac{a+b+\mathrm{\μ}\×h-a-b}{(a+b)\×(a+b+\mathrm{\μ}\×h)}}{\frac{\mathrm{\μ}}{a+b+\mathrm{\μ}\×h}}$

$\tan \mathrm{\θ}=\frac{h}{a+b}$

$\tan \mathrm{\θ}=\frac{h}{\mathrm{wb}\left(\mathrm{wheel\; base}\right)}$

General status, h approximates wb, and hence one can see that, about 45 ° of this force action line and horizontal angle, but limit of consideration is 45 ° ± 15 ° in design.

Be single rocking arm or trailing wheel ditch pawl when being connected on the four-bar linkage that lower fork and lower fork and front triangle support body join with single rotating shaft to the rear suspension system, the main turning point major part of rear suspension system drops near the force action line, and Shock absorber is difficult for being affected during rear Brake car.

For other four-bar linkage, must consider that the Vee formation support body is with respect to the position of the instantaneous center (Instant Center) of front triangle support body.This instantaneous center is positioned at the online intersection point of online and the upper connecting rod turning point of turning point before and after lower fork or the lower link, and it is just fewer that instantaneous center more affects the action of Shock absorber near the force action line.

No sag setting is for to impose a precompressed at Shock absorber, and this precompressed is similar to the pressure that rider's body weight is bestowed Shock absorber, and Shock absorber can not compress when making the rider sit on cushion.

Weight transfer effect refers to the rider and sits the movement that causes center of gravity with stance, causes the strength situation of difference to some extent of bestowing Shock absorber.Generally speaking, the parallel motion of sitting posture and the center of gravity that causes of standing, then center of gravity changes to some extent for the length of the arm of force of Shock absorber turning point, cause the change of Shock absorber amount of compression, in addition, stand when trampling except center of gravity can move up and down, pin is also can the application of force uneven for pedal.

And single rocking arm (Cantilever) mechanism of the normal application of shock-proof bicycle frame, No. 4039200 case of US Patent for example, it tramples the degradation of energy minimizing in order to make, mostly the main turning point of a Vee formation support body with respect to a front triangular frame body designed near front fluted disc group and chain joint (if front fluted disc group is the three-chip type fluted disc, then main turning point is located between middle and the small pieces and the chain joint, if front fluted disc group is the two-chip type fluted disc, then main turning point is located at small pieces and chain joint, if front fluted disc group is the one chip fluted disc, then main turning point is located at this sheet fluted disc and chain joint).The method can reduce really tramples degradation of energy, but can cause larger pedal to recalcitrate, especially more obvious on the shock-proof bicycle frame of long stroke.The phenomenon that recalcitrates in order to reduce pedal must reduce main turning point height, but can increase the loss of trampling energy again thus, can't make the best of both worlds.Under this system, when the rider stands when trampling, Shock absorber changes compressive state along with rider's application of force size, so can't reduce the degradation of energy of standing and trampling.

Also there is similar problem in existing rear suspension system, wherein:

The rear suspension system of No. 5899480 case of US Patent is mat one four-bar linkage, quite approaching because colluding near two turning points of pawl, cause centre of gration (the Virtual PivotPoint of its trailing wheel centrode, be called for short VPP) about the after a while side of lower fork front end pivotal point, therefore with aforementioned single rocker arm body without big-difference too, trample degradation of energy and pedal and recalcitrate the high and low position that formative factor is decided by lower fork front end pivotal point, still can't make the best of both worlds.And the force action line when its trailing wheel center is lower than the rear Brake of wheel car with respect to the instantaneous center of front triangle, after the operation during Brake car, this rear shock absorber that can stretch with joint efforts, and it is obvious to affect the action situation of Shock absorber.

US Patent 6386568B1 case, the centre of gration of its trailing wheel centrode (VPP) position is quite high, so that any situation stampede power all produces stretching action to Shock absorber, cause stampede power to be stretching action for Shock absorber, only when the tensile force that impulsive force is subject to greater than Shock absorber, just meeting is so that the Shock absorber action, Shock absorber can't absorb little impact when in other words trampling, cause the human discomfort when trampling based on said circumstances, setting under (No SagSetting) without amount of compression, really can solve the problem of degradation of energy, but No Sag is Setting, also cause the not good shortcoming of comfort level, and the triangle support body is positioned at remote the place ahead, serious stretching Shock absorber in the time of can causing rear Brake car with respect to the instantaneous center of front triangle support body thereafter, so that the Shock absorber action is difficult for, cause this moment comfort level extremely low, the result of the Shock absorber that seriously stretches in addition, also so that the Shock absorber life-span shorten.

US Patent No. 5553881 case, 6206397B1 case and 6488301B2 case also are to use four-bar linkage, thereafter taking turns track is the S curve, and lower semisection is protruding in large fluted disc, chain tension can pull to trailing wheel certain point when trampling, reach the effect of locking shockproof mechanism, if take turns the center after when designing this point for normal Sag amount, just can reduce and trample degradation of energy.But trailing wheel is subject to ground shock simultaneously when trampling, and then because being subjected to pining down of chain tension, ground shock can't effectively be absorbed by Shock absorber, will affect the shock-absorbing traveling comfort.When trampling when standing, weighttransfer effect is so that trailing wheel center off-target point more, causes this suspension system also can't actv. to reduce degradation of energy when trampling, and the RC variable quantity is also quite large in addition, and it is serious to cause the pedal of this patent to recalcitrate situation.

Summary of the invention

Therefore, the present invention's purpose namely minimizes the impact of, Brake car and is down to the bicycle with rear suspension avoiding vibration that minimum, low pedal recalcitrated, can prolong the Shock absorber life-span sitting, trample when stance drives degradation of energy providing a kind of.

The general bicycle with rear shock-absorbing, do not had the Shock absorber of no sag setting, and the design of its vehicle frame is also because of the different to some extent differences of demand, the present invention mainly develops research based on above-mentioned purpose, and the contradiction of solution traveling comfort and degradation of energy obtains the rear suspension avoiding vibration bicycle system that both have concurrently.

So the present invention has the bicycle of rear suspension avoiding vibration, to comprise a front triangle support body, one be arranged on this front triangle support body one the place ahead to front-wheel, one be arranged on this front triangle support body one rear to trailing wheel and be arranged on rear suspension system between this front triangle support body and this trailing wheel towards a rear to extension, it is that initial point and level ground angle are in 45 ° ± 15 ° scopes that the Vee formation of this rear suspension system is taken turns touchdown point afterwards to the instantaneous center of front triangle pendulum, and VPP is near the tangent line of trailing wheel center and fluted disc formation or on the tangent line, the stampede power that makes the rider sit on cushion to be applied is down to minimum to the stretching action of a Shock absorber generation, and this Shock absorber is being set under (no sag setting) without amount of compression, Shock absorber is active in one's movements and reduces degradation of energy when trampling, and the pressure fluid of this Shock absorber is flowed towards one second grease chamber by one first grease chamber, and a piston marches to a second place by a primary importance, to produce throttling in this primary importance, pressure fluid is flowed towards this first grease chamber by this second grease chamber, and this piston marches to this primary importance by this second place, also is to produce throttling in this primary importance.

By this, in order to make this system reach the most comfortable, this Shock absorber has to be set (no sag setting) without amount of compression and sets and avoid the Shock absorber travel compression on earth and the function of damaging, and can take into account to reduce and trample degradation of energy, pedal recalcitrates and reduce impact on Shock absorber.

Description of drawings

Fig. 1 is that the front application force of existing shock-proof bicycle frame Hou Brake car produces scheme drawing;

Application force when Fig. 2 is existing shock-proof bicycle frame Hou Brake car produces scheme drawing;

Fig. 3 is that the force action line of existing shock-proof bicycle frame Hou Brake car produces scheme drawing;

Fig. 4 is a plan sketch, illustrates that the present invention has one first preferred embodiment of the bicycle of rear suspension avoiding vibration;

Fig. 5 is the scheme drawing of the corresponding force action line of online and horizontal angle of one of the above-mentioned preferred embodiment of the present invention instantaneous center and trailing wheel earth point;

Fig. 6 is the combination section of one of the above-mentioned preferred embodiment of the present invention Shock absorber, illustrates that a main piston is positioned at a primary importance;

Fig. 7 is one of the above-mentioned preferred embodiment of the present invention trailing wheel action scheme drawing, illustrate that trailing wheel vibration direction compression and interlock one upper and lower connecting rod on one produce the in the same way action diagram of pivot;

Fig. 8 is the action scheme drawing of the Shock absorber of the above-mentioned preferred embodiment of the present invention, illustrates that this main piston is by the primary importance second place of advancing;

Fig. 9 is the centre of gration distribution schematic diagram of taking turns centrode after the above-mentioned preferred embodiment of the present invention, illustrate that centre of gration that trailing wheel vibrates direction compression up and make the trailing wheel centrode is towards a rear to the simplified schematic diagram that produces extension;

Figure 10 is one second preferred embodiment plan sketch of the bicycle of the present invention with rear suspension avoiding vibration;

Figure 11 is the combination section of one of the present invention's the second preferred embodiment Shock absorber;

Figure 12 is one of the present invention's the second preferred embodiment trailing wheel action scheme drawing, illustrate that trailing wheel vibration direction on compresses and utilize Shock absorber to reach the shock-absorbing purpose; And

Figure 13 is the combination section of one of the present invention's the 3rd preferred embodiment Shock absorber.

The specific embodiment

As shown in Figure 4, the present invention has the bicycle embodiment of rear suspension avoiding vibration, include a rear suspension system 100, one and the front triangle support body 200, that links of this rear suspension system 100 be arranged on these front triangle support body 200 1 the place aheads are subjected to driver element 500 from these crank unit 400 interlocks to the crank unit 400, that front-wheel 300, an axle of I is located at these front triangle support body 200 bottoms, a pair of should front-wheel 300 and be positioned at these front triangle support body 200 1 rears and be arranged on trailing wheel 600 in this rear suspension system 100 to II.

This front triangle support body 200 has a vehicle head tube 210, a pair of seat pipe 220, that should vehicle head tube 210 is connected to this vehicle head tube 210 and upper pipe 230, between this pipe 220 and is connected between this vehicle head tube 210 and this pipe 220 and is positioned at the lower pipe 240 and of managing 230 belows on this and be connected to these pipe 220 1 bottoms and manage the 240 five-way axles 250 that are connected with this time.

This crank unit 400 has the pedal 420 that a crank 410 and two axles are located at these crank 410 2 ends.

This driver element 500 has a fluted disc 510 that is attached at this crank unit 400, one and the rear flywheel group 520 that links of this trailing wheel 600 and the winding chain 530 on this fluted disc 510 and rear flywheel group 520, and when a front fluted disc group is three, then these fluted disc 510 indications are middle fluted disc, when a front fluted disc group is two, the midway location that then refers to these two fluted discs, when a front fluted disc group is monolithic, then refer to this fluted disc 510.

This rear suspension system 100 comprise that a Vee formation support body 10, that is extended towards this rear to II by this front triangle support body 200 is articulated in that lower link 20, between this Vee formation support body 10 and this front triangle support body 200 is articulated between this Vee formation support body 10 and this front triangle support body 200 and the upper connecting rod 30 and above this lower link 20 be articulated in this front triangle support body 200 and should on Shock absorber 40 between the connecting rod 30.

This Vee formation support body 10 has a pair of lower breeches pipe 11 of should five-way axle 250 and extending along this rear to II, and is fixed in the rear ditch pawl 13 of this upper and lower breeches pipe 11,12 joints with this time breeches pipe 11 crossing upper branch pipes 12 and that are ㄥ shape.This time breeches pipe 11 has the lower fork leading section 111 of contiguous this five-way axle 250, and this upper branch pipe 12 has a upper fork leading section 121 that is positioned at these lower fork leading section 111 tops.

This lower link 20 has the first rotating shaft 21, that an axle is located on this time pipe 240 and is located at second rotating shaft 22 of pitching leading section 111 under this Vee formation support body 10 with these the first rotating shaft 21 opposite settings and axle.And this first rotating shaft 21 is the tops that are positioned at these front triangle support body 200 five-way axles 250, and be positioned at 250 pairs on this five-way axle should the place ahead to the sidepiece of I.

Should upper connecting rod 30 general triangularities, and have an axle be located at the 3rd rotating shaft 31 of pitching leading section 121 on this Vee formation support body 10, one with the 3rd rotating shaft 31 be opposite setting articulated section 32 and one between between the 3rd rotating shaft 31 and this articulated section 32 and axle be located at the 4th rotating shaft 33 on this pipe 220.

Cooperate and to consult Fig. 6, this Shock absorber 40 has auxiliary cylinder block 43, that main piston 42, that a Master cylinder body 41, is set in these Master cylinder body 41 inside is set in these Master cylinder body 41 outsides, and to be set in this auxiliary cylinder block 43 inner and be fixed on that auxiliary piston 44, on this Master cylinder body 41 is attached between this main piston 42 and this auxiliary cylinder block 43 and the answer unit 47 of these main piston 42 back stretch is provided along the adjusting lever 46 and that the piston rod 45, of an Axis Extension is located in these piston rod 45 inside adjustably.This Shock absorber 40 is being set under (No Sag) without amount of compression, amount of compression is no more than 1/7th of shock-absorbing stroke, for example the shock-absorbing row becomes 38 ㎜, then general amount of compression can be 5.4～0 ㎜ or 3.8～0, that is, having under the situation of a little amount of compression, any stampede power may produce the stretching action of trace to this Shock absorber 40, if amount of compression is 0, then any stampede power can't produce stretching action to 40 of this Shock absorbers.

This Master cylinder body 41 have one be articulated under the front triangle support body 200 bottom 411 on the pipe 240, one with the main-cylinder wall 413 of top ends 412 and between this end, top ends 411,412 of these bottom 411 opposite settings, and this top ends 412 has a minor diameter part 412 '.And this bottom 41 be positioned at 21 pairs of first rotating shafts of this lower link 20 should the place ahead to the sidepiece of I.

This main piston 42 levels off to the second grease chamber 422 of this top ends 412 in these Master cylinder body 41 inner area every the first grease chamber 421 and that is formed with contiguous this bottom 411, this second grease chamber 422 is connected with this minor diameter part 412 ', and its sectional area is greater than this minor diameter part 412 '.

This auxiliary cylinder block 43 has one and is set in the socket part 431 of these Master cylinder body 41 outsides and the pivot part 432 on the opposite articulated section 32 that arranges and be articulated in connecting rod 30 on this with this socket part 431.

This auxiliary piston 44 is to level off to the angrily chamber 442 of this socket part 431 in these auxiliary cylinder block 43 inner area every being formed with a positive air chamber 441 and that levels off to this pivot part 432, angrily the air pressure of chamber 442 is preferably identical with ambient pressure, and because the air pressure of the chamber 442 of should doing something in a fit of pique is little, the air pressure of this positive air chamber 441 is also little.

This piston rod 45 is to be hollow tubular, has one and is communicated with this first and second grease chamber 421,422 oilhole 451, and this oilhole 451 has the first port 452 and of being located on this main piston 42 and is located at the second port 453 on these piston rod 45 1 side faces.

This adjusting lever 46 has a pair of tapering 461 that should the first port 452, and is subjected to 462 stoppers of control lever that are arranged on this auxiliary cylinder block 43, can produce displacement along an axis, adjust the sectional area of this first port 452.

This answer unit 47 has an interval ring taps 471 and that is set in these Master cylinder body 41 inside and forms and be positioned at the permitted gas space 472 of this first grease chamber one side by these interval ring taps 471 intervals, and this permitted gas space 472 is filled with high pressure nitrogen.

As shown in Figure 5, above-mentioned rear suspension system 100, this Vee formation support body 10 is with respect to one of this front triangle support body 200 instantaneous center O, first a straight line L1 and by these lower link 20 first rotating shafts 21 and the second rotating shaft 22 passes through the point of crossing of the second straight line L2 of the 3rd rotating shaft 31 of connecting rod 30 on this and the 4th rotating shaft 32 just, and the online and horizontal angle theta of this instantaneous center O and these trailing wheel 600 earth points ₂Being about 40 °, is the angle theta on force action line and the ground of producing when trailing wheel 600 Brake car ₁In the scope, be down to minimum so can make on the impact of rear crop rotation Brake car shock-absorbing.This angle theta ₁About 45 ° ± 15 °, and better selection can be in 40 °～50 °, 35 °～45 ° the scope.

Again as shown in Figure 6, when the rider when sitting on cushion and carrying out trample action, setting under (no sag setting) without amount of compression, any stampede power can't produce stretching action to this Shock absorber 40, can reduce the loss of trampling energy.At this moment, 42 pairs of this main pistons should Master cylinder bodies 41 and are positioned at a primary importance, and the second port 453 of this oilhole 451 is corresponding to the minor diameter part 412 ' of this Master cylinder body 41.And this auxiliary piston 44 is also to should auxiliary cylinder block 43 and be positioned at an extreme lower position.

Again as shown in Figure 7, running into road bump in bicycle is advanced rises and falls, impel when direction Y swings gradually on the trailing wheel 600 towards, the second rotating shaft 22 of this lower link 20 is to be produced to revolve towards this place ahead to the I direction to II by this rear take the first rotating shaft 21 as center of turn to move (clockwise direction as shown in the figure), the 3rd rotating shaft 31 that should upper connecting rod 30 be take the 4th rotating shaft 33 as center of turn by the rear to II forward the direction I produce to revolve and move (clockwise direction as shown in the figure), and as shown in Figure 8, the pivot part 432 that utilizes this articulated section 32 to drive this auxiliary cylinder block 43 produces contracting with respect to this Master cylinder body 41 and moves, pressure fluid is flowed towards this second grease chamber 422 by this first grease chamber 421, and this main piston 42 is produced when advancing towards leveling off to one of this interval ring set 471 second place by this primary importance, utilize the sectional area difference of this minor diameter part 412 ' and the second grease chamber 422, so that the second port 453 of this oilhole 451 produces throttling in this primary importance during corresponding to this minor diameter part 412 ', and speeded gradually towards second place gait of march by primary importance at this main piston 42.At this moment, because producing contracting with respect to this Master cylinder body 41, moves this auxiliary cylinder block 43, so that this auxiliary piston 44 marches to a higher position by extreme lower position, and compresses the high pressure gas of main gas tank 41, and the high pressure nitrogen of these permitted gas space 472 inside also can be spaced apart ring taps 471 compressions originally.That is to say, in the moment that vibrations produce, utilize this main piston 42 to produce the effect of throttling, buffering in primary importance.

Subsequently, when the shaking force on the pivot part 432 of bestowing auxiliary cylinder block 43 disappears, utilize the rebound action of the high pressure nitrogen of the high pressure gas of positive air chamber 441 and permitted gas space 472, this auxiliary cylinder block 43 and interval ring taps 471 can revert back to the position of Fig. 6, and this main piston 42 also can be retracted primary importance by the second place, and pressure fluid is flowed towards this first grease chamber 421 by this second grease chamber 422, and utilize the sectional area difference of this second grease chamber 422 and minor diameter part 412 ', so that the second port 453 of this oilhole 451 also produces throttling in this primary importance during corresponding to this minor diameter part 412 ', and slack-off gradually towards the primary importance gait of march by the second place at this main piston 42.Thus, can prevent that these Shock absorber 40 resiliences and this auxiliary piston 44 and auxiliary cylinder block 43 from producing bump, can increase the service life of Shock absorber 40.

Again as shown in Figure 4, when trampling application of force pedal 420, chain 530 tension force and weight transfer can produce an application force to rear ditch pawl 13, this application force has the direction of difference when different ratio of number of teeth, when the centre of gration (VPP) of trailing wheel centrode is positioned on the aviation value of each active line, can be less trample degradation of energy.The present invention has bicycle 100 embodiment of rear suspension avoiding vibration, and the centre of gration of its trailing wheel centrode (VPP) is when normal ride position (Sag is 0), on the tangent line of trailing wheel center and fluted disc or near the tangent line, so can reduce the loss of trampling energy.

And when the centre of gration of this trailing wheel centrode (VPP) swings towards the upper direction Y away from ground along with trailing wheel 600 continuation, can extend (such as Fig. 9) to this rear to II, then can reduce the pedal that causes when shock-absorbing is moved and recalcitrate effect.The centre of gration (VPP) of this trailing wheel centrode of the present invention, on the tangent line of trailing wheel center and fluted disc or near the tangent line, its scope can be trailing wheel 600 centers to the point of contact of fluted disc 510, level is 10mm forward, level is 300mm backward, this tangent line is the scope that surrounded of off normal 55mm up and down, thus, also helps to reduce the loss of trampling energy.In addition, the centre of gration of this trailing wheel centrode (VPP), its scope also can be at the trailing wheel center is leading edge to the fluted disc point of contact, and level is 150 ㎜ backward, and tangent line is off normal 20 ㎜ up and down.

It is worth mentioning that the present invention's the Shock absorber 40 angrily air pressure of chamber 442 is little, relatively, the air pressure of positive air chamber 441 is also little, and thus, not only comparatively simple on making (precision, air-tightness do not need to require too high), cost are also lower, and the air pressure of positive air chamber 441 is little, can guarantee traveling comfort.And utilize the sectional area between these control lever 462 capable of regulating taperings 461 of operation and the first port 452, and can in time adjust cushion characteristic.

Below, will be summarized as follows with regard to the effect that the present invention can produce:

One, for the loss of trampling energy, be that VPP is dropped near the tangent line that trailing wheel center and front fluted disc group form even on the tangent line, thus can reduce the moment that chain tension produces VPP when trampling by actv., so that the amount of compression of Shock absorber 40 drops to is minimum.

What two, see through this Shock absorber 40 sets (no sag setting) without amount of compression, so that the rider when sitting on cushion and carrying out trample action, can't or move this Shock absorber 40 a little, reach the purpose of low energy losses, but when meeting with the impact of hole, hole, but can sensitive action.

Three, when the rider carries out trample action with stance, because the relation of weight transfereffect, be different from and be sitting in the strength of bestowing on the cushion so that the rider bestows the strength of Shock absorber 40, if there is no sag setting to set, the then impact on same stampede power and same road surface when driving, compared to the shock-absorbing design that sag setting is arranged, Shock absorber 40 and Yan Douhui has less shock-absorbing action can significantly reduce the degradation of energy of standing when trampling.

Four,, Zai Brake car affects the action part of Shock absorber 40, because this Vee formation support body 10 with respect to the instantaneous center O of this front triangle support body 200 be positioned at take trailing wheel 600 touchdown points as initial point and the level ground angle at 45 ° ± 15 ° fan-shaped range, according to aforesaid calculating as can be known, such design can be so that the impact of Brake car drops to minimum.

Five, the part that recalcitrates at pedal, it produces reason as above stated specification, leads because the chain length when shock-absorbing is moved changes, and makes its RC changing value be similar to chain length for this improvement of problem and changes, and then this phenomenon just can be significantly improved.

Six, because Shock absorber 40 be the setting of no sag setting so that positive air chamber 441 has certain precompressed, when this precompressed more greatly, except the design of Shock absorber 40 to heal firm, move also more insensitive, from Pp=Np+F (the positive air chamber air pressure of Pp=; The Np=chamber air pressure of doing something in a fit of pique; The F=rider body weight application of force) as can be known, can reach the purpose that reduces positive air chamber 441 air pressure through reducing chamber 442 air pressure of doing something in a fit of pique, when chamber 442 air pressure of doing something in a fit of pique are healed low even are ambient pressure, then can reach the most desirable positive air chamber 441 air pressure.

But when angrily chamber 442 air pressure are lower, the effect that causes is that Shock absorber 40 recoils to the limit easily, and when reaching the shock-absorbing extreme limit of travel, meeting damages easily so that Shock absorber 40 moving members collide mutually, Shock absorber 40 utilizes a hydraulic top out bumper for this reason, so that the shock-absorbing rebound stroke is when being about to reach capacity, the effect that can produce buffering, and then prolong life-span of Shock absorber.Certainly do not limit and utilize hydraulic pressure, any object or method that reaches the elastic buffer effect all can reach identical effect.

Again as shown in figure 10, second embodiment of the invention and above-described embodiment are roughly the same, also include a rear suspension system 100 ', one and the front triangle support body 200 ', that articulates of this rear suspension system 100 ' be arranged on this front triangle support body 200 ' one the place ahead to the front-wheel 300 ' of I, a pair of should front-wheel 300 ' and be positioned at this front triangle support body 200 ' one rear to II and be arranged on trailing wheel 600 ' in this rear suspension system 100 '.

This front triangle support body 200 ' has a vehicle head tube 210 ', a pair of seat pipe 220 ' that should vehicle head tube 210 ', one is connected to the upper pipe 230 ' between this vehicle head tube 210 ' and this seat pipe 220 ', one is connected between this vehicle head tube 210 ' and this seat pipe 220 ' and is positioned at the lower pipe 240 ' below the pipe 230 ' this on, one is connected to this pipe 220 ' one bottom and the five-way axle 250 ' that is connected with this time pipe 240 ' and is managed 220 ' relative and be arranged on pivot post 260 ' above this five-way axle 250 ' with this seat.This rear suspension system 100 ' comprises a Vee formation support body 10 ' and that is hubbed on this pivot post 260 ' and is articulated in this front triangle support body 200 ' and the Shock absorber 40 ' between the tripod support body 10 ' after this.

This Vee formation support body 10 ' has a main turning point 11 ' that is articulated in this five-way axle 250 ' top.

As shown in figure 11, this Shock absorber 40 ' has a Master cylinder body 41 ', one is set in the main piston 42 ' of this Master cylinder body 41 ' inside, one is set in the auxiliary cylinder block 43 ' of this Master cylinder body 41 ' outside, one to be set in this auxiliary cylinder block 43 ' inner and be fixed on auxiliary piston 44 ' on this Master cylinder body 41 ', one is attached between this main piston 42 ' and this auxiliary cylinder block 43 ' and along the piston rod 45 ' of an Axis Extension, one is located in the adjusting lever 46 ' of this piston rod 45 ' inside adjustably, one provides the answer unit 47 ' and of this main piston 42 ' back stretch to be installed in the angrily damper element 48 ' of 442 ' inside, chamber of one of this auxiliary cylinder block 43 '.This damper element 48 ' is to make loop shaped with excellent power glue material.And this Shock absorber 40 ' is being set under (No Sag) without amount of compression, and any stampede power can't produce stretching action to this Shock absorber 40 '.And the Shock absorber of above-mentioned member, function and the first embodiment is roughly the same, and detailed construction repeats no more, and utilizes the setting of this damper element 48 ', can produce the effect of buffering when the shock-absorbing rebound stroke is about to reach capacity, and then prolong the life-span of Shock absorber.

By this, utilize this main turning point 11 ' when this trailing wheel 600 ' Brake car near institute's force action line that produces, the stampede power that makes the rider sit on cushion to be applied is down to minimum to the stretching action of this Shock absorber 40 ' generation.

Again as shown in figure 12, running into road bump in bicycle is advanced rises and falls, when impelling trailing wheel 600 ' direction Y on to swing gradually, this Vee formation support body 10 ' is to be produced to revolve towards this place ahead to the I direction to II by this rear take main turning point 11 ' as center of turn to move (clockwise direction as shown in the figure), and utilizes the setting of this Shock absorber 40 ' can reach the effect (Shock absorber with the first embodiment moves) of throttling, buffering.

The Shock absorber 40 ' of this second embodiment also applicable to the Shock absorber 40 of 100, the first embodiment of rear suspension system of the first embodiment also applicable to the rear suspension system 100 ' of the second embodiment.

As shown in figure 13, the Shock absorber 40 of third embodiment of the invention " roughly the same with the first embodiment, although and the Shock absorber 40 of the first embodiment be provided with angrily chamber 442, because of the air pressure of the chamber 442 of doing something in a fit of pique little.The Shock absorber 40 of the 3rd embodiment " then be so that chamber 442 angrily " pressure equal external pressure, and be at this Master cylinder body 41 " with auxiliary cylinder block 43 " socket place form most conduction troughs 48 ", and by described conduction trough 48 " make the chamber 442 of should doing something in a fit of pique " can with exterior.

The above person, only for the present invention's preferred embodiment, when the scope that can not limit with this invention process, the simple equivalence of namely generally being done according to the present patent application claim and description of the invention content changes and modifies, and all should still belong in the scope that patent of the present invention contains.

Claims (30)

1. bicycle with rear suspension avoiding vibration, comprise a front triangle support body, one be arranged on this front triangle support body one the place ahead to front-wheel, one be arranged on this front triangle support body one rear to a trailing wheel and be arranged on rear suspension system between this front triangle support body and this trailing wheel towards a rear to extension, it is characterized by, this rear suspension system satisfies a Vee formation support body arbitrary moment in effective shock-absorbing stroke simultaneously, and the instantaneous center pendulum of this front triangle support body is taken turns touchdown point afterwards is that initial point and level ground angle are in 45 ° ± 15 ° scopes, and the centre of gration of this trailing wheel centrode is near the tangent line of trailing wheel center and fluted disc formation or on the tangent line, and one be articulated in this before, Shock absorber between the Vee formation support body is under setting without amount of compression, amount of compression is no more than 1/7th of shock-absorbing stroke, and Shock absorber is active in one's movements and reduces degradation of energy when trampling.

2. the described bicycle with rear suspension avoiding vibration according to claim 1, wherein, the first two divides this Shock absorber actuating length for the moment, it is that initial point and level ground angle are in 45 ° ± 15 ° scopes that instantaneous center pendulum is taken turns touchdown point afterwards, and the centre of gration of trailing wheel centrode is near the tangent line of trailing wheel center and fluted disc formation or on the tangent line, and this Shock absorber is under setting without amount of compression, and amount of compression is no more than 1/7th of shock-absorbing stroke, and Shock absorber is active in one's movements and reduces degradation of energy when trampling.

3. the described bicycle with rear suspension avoiding vibration according to claim 1, wherein, this Shock absorber actuating length 2/1/3rds to three o'clock, it is that initial point and level ground angle are in 45 ° ± 15 ° scopes that instantaneous center pendulum is taken turns touchdown point afterwards, and the centre of gration of trailing wheel centrode is near the tangent line of trailing wheel center and fluted disc formation or on the tangent line, and this Shock absorber is under setting without amount of compression, amount of compression is no more than 1/7th of shock-absorbing stroke, and Shock absorber is active in one's movements and reduces degradation of energy when trampling.

4. the described bicycle with rear suspension avoiding vibration according to claim 1 and 2, wherein, it is that initial point and level ground angle are in 40 ° ~ 50 ° scopes that this instantaneous center pendulum is taken turns touchdown point afterwards.

5. the described bicycle with rear suspension avoiding vibration according to claim 1 and 2, wherein, it is that initial point and level ground angle are in 35 ° ~ 45 ° scopes that this instantaneous center pendulum is taken turns touchdown point afterwards.

6. the described bicycle with rear suspension avoiding vibration according to claim 1, wherein, take turns the centre of gration position of centrode after this rear suspension system, its horizontal extent is the trailing wheel center to fluted disc point of contact level 10 ㎜ forward, level is 300 ㎜ backward, and its vertical range is up and down off normal 55 ㎜ of trailing wheel center and fluted disc tangent line.

7. the described bicycle with rear suspension avoiding vibration according to claim 1 wherein, is taken turns the centre of gration position of centrode after this rear suspension system, and its scope is leading edge at the trailing wheel center to the fluted disc point of contact, and level is 150 ㎜ backward, and tangent line is off normal 20 ㎜ up and down.

8. bicycle with rear suspension avoiding vibration, comprise a front triangle support body, one be arranged on this front triangle support body one the place ahead to front-wheel, one be arranged on this front triangle support body one rear to trailing wheel and be arranged on rear suspension system between this front triangle support body and this trailing wheel towards a rear to extension, it is characterized by, the rear suspension system satisfies a Vee formation support body arbitrary moment in effective shock-absorbing stroke simultaneously, and the instantaneous center pendulum of this front triangle support body is taken turns touchdown point afterwards is that initial point and level ground angle are in 45 ° ± 15 ° scopes, and the centre of gration of trailing wheel centrode is near the tangent line of trailing wheel center and fluted disc formation or on the tangent line, and one be articulated in this before, Shock absorber between the Vee formation support body is under setting without amount of compression, amount of compression is no more than 1/7th of shock-absorbing stroke, and Shock absorber is active in one's movements and reduces degradation of energy when trampling, and the pressure fluid of this Shock absorber is flowed towards one second grease chamber by one first grease chamber, and a piston marches to a second place by a primary importance, to produce throttling in this primary importance, pressure fluid is flowed towards this first grease chamber by this second grease chamber, and this piston marches to this primary importance by this second place, also is to produce throttling in this primary importance.

9. the described bicycle with rear suspension avoiding vibration according to claim 8, wherein, it is that initial point and level ground angle are in 35 ° ~ 45 ° scopes that this instantaneous center pendulum is taken turns touchdown point afterwards.

10. the described bicycle with rear suspension avoiding vibration according to claim 8, wherein, this Shock absorber has a Master cylinder body, one is set in the main piston of this Master cylinder body inside, one is set in the auxiliary cylinder block of this Master cylinder body outside, one to be set in this auxiliary cylinder block inner and be fixed on auxiliary piston on this Master cylinder body, one piston rod and that is attached between this main piston and this auxiliary cylinder block provides this main piston to be transformed into the answer unit of this extended state elastic force by this compressive state, this main piston this Master cylinder body inner area every be formed with this first, two grease chambeies, this auxiliary piston in this auxiliary cylinder block inner area every being formed with angrily chamber of a positive air chamber and.

11. the described bicycle with rear suspension avoiding vibration according to claim 10, wherein, the piston rod of this Shock absorber has the oilhole of this first and second grease chamber of connection, this oilhole has the first port and of being located on this main piston and is located at the second port on this piston rod, this main piston is when primary importance, this second port is corresponding to one of this Master cylinder body minor diameter part, and this main piston is when the second place, and this second port is corresponding to having second grease chamber of sectional area greater than this minor diameter part.

12. the described bicycle with rear suspension avoiding vibration according to claim 11, wherein, this Shock absorber also has an adjusting lever that is located in adjustably this piston rod inside, and this adjusting lever produces displacement, the sectional area of this first port of capable of regulating along an axis.

13. the described bicycle with rear suspension avoiding vibration according to claim 10, wherein, the answer unit of this Shock absorber has an interval ring taps and that is set in this Master cylinder body inside and forms and be positioned at the permitted gas space of this first grease chamber one side by this ring taps interval, interval, and this permitted gas space is filled with high pressure gas.

14. the described bicycle with rear suspension avoiding vibration according to claim 10, wherein, the air pressure of the angrily chamber of this Shock absorber is identical with ambient pressure.

15. the described bicycle with rear suspension avoiding vibration according to claim 10, wherein, this Shock absorber be so that angrily pressure of chamber equal external pressure, and be that socket place at this Master cylinder body and auxiliary cylinder block forms most conduction troughs, make this do something in a fit of pique chamber and exterior by described conduction trough.

16. the described bicycle with rear suspension avoiding vibration according to claim 10, wherein, this Shock absorber also has a damper element that is installed in this chamber interior of doing something in a fit of pique.

17. the described bicycle with rear suspension avoiding vibration according to claim 8, wherein, take turns the centre of gration position of centrode after this rear suspension system, its horizontal extent is that the trailing wheel center is to the point of contact of fluted disc, level is 10mm forward, level is 300mm backward, and its vertical range is trailing wheel center and the fluted disc tangent line scope that surrounded of off normal 55mm up and down.

18. the described bicycle with rear suspension avoiding vibration according to claim 8, wherein, take turns the centre of gration position of centrode after this rear suspension system, its horizontal extent is leading edge at the trailing wheel center to the fluted disc point of contact, level is 150 ㎜ backward, and its vertical range is up and down off normal 20 ㎜ of trailing wheel center and fluted disc tangent line.

19. the described bicycle with rear suspension avoiding vibration according to claim 8, wherein, this Shock absorber actuating length 2/1/3rds to three o'clock, to take turns afterwards touchdown point be initial point to this Vee formation support body with the level ground angle in 45 ° ± 15 ° scopes to the instantaneous center of this front triangle support body pendulum, and the centre of gration of trailing wheel centrode is near the tangent line of trailing wheel center and fluted disc formation or on the tangent line.

20. bicycle with rear suspension avoiding vibration, comprise a front triangle support body, one be arranged on this front triangle support body one the place ahead to front-wheel, one be arranged on this front triangle support body one rear to trailing wheel and be arranged on rear suspension system between this front triangle support body and this trailing wheel towards a rear to extension, it is characterized by, one Vee formation support body of this rear suspension system has a main turning point that articulates with this front triangle support body, this main turning point is to produce near the force action line when dropping on this Hou Lun Brake car, and be positioned at take the trailing wheel touchdown point as initial point and the level ground angle 45 ° ± 15 ° scopes, this Shock absorber is under setting without amount of compression, amount of compression is no more than 1/7th of shock-absorbing stroke, and Shock absorber is active in one's movements and reduces degradation of energy when trampling.

21. the described bicycle with rear suspension avoiding vibration according to claim 20, wherein, this main turning point be positioned at take the trailing wheel touchdown point as initial point and the level ground angle 35 ° ~ 45 ° scopes.

22. bicycle with rear suspension avoiding vibration, comprise a front triangle support body, one be arranged on this front triangle support body one the place ahead to front-wheel, one be arranged on this front triangle support body one rear to trailing wheel and be arranged on rear suspension system between this front triangle support body and this trailing wheel towards a rear to extension, it is characterized by, one Vee formation support body of this rear suspension system has a main turning point that articulates with this front triangle support body, this main turning point is to produce near the force action line when dropping on this Hou Lun Brake car, and be positioned at take the trailing wheel touchdown point as initial point and the level ground angle 45 ° ± 15 ° scopes, this Shock absorber is under setting without amount of compression, amount of compression is no more than 1/7th of shock-absorbing stroke, and Shock absorber is active in one's movements and reduces degradation of energy when trampling, and the pressure fluid of this Shock absorber is flowed towards one second grease chamber by one first grease chamber, and a piston marches to a second place by a primary importance, to produce throttling in this primary importance, pressure fluid is flowed towards this first grease chamber by this second grease chamber, and this piston marches to this primary importance by this second place, also is to produce throttling in this primary importance.

23. the described bicycle with rear suspension avoiding vibration according to claim 22, wherein, this main turning point be positioned at take the trailing wheel touchdown point as initial point and the level ground angle 35 ° ~ 45 ° scopes.

24. the described bicycle with rear suspension avoiding vibration according to claim 22, wherein, this Shock absorber has a Master cylinder body, one is set in the main piston of this Master cylinder body inside, one is set in the auxiliary cylinder block of this Master cylinder body outside, one to be set in this auxiliary cylinder block inner and be fixed on auxiliary piston on this Master cylinder body, one piston rod and that is attached between this main piston and this auxiliary cylinder block provides this main piston to be transformed into the answer unit of this extended state elastic force by this compressive state, this main piston this Master cylinder body inner area every be formed with this first, two grease chambeies, this auxiliary piston in this auxiliary cylinder block inner area every being formed with angrily chamber of a positive air chamber and.

25. the described bicycle with rear suspension avoiding vibration according to claim 24, wherein, the piston rod of this Shock absorber has the oilhole of this first and second grease chamber of connection, this oilhole has the first port and of being located on this main piston and is located at the second port on this piston rod, this main piston is when primary importance, this second port is corresponding to one of this Master cylinder body minor diameter part, and this main piston is when the second place, and this second port is corresponding to having second grease chamber of sectional area greater than this minor diameter part.

26. the described bicycle with rear suspension avoiding vibration according to claim 25, wherein, this Shock absorber also has an adjusting lever that is located in adjustably this piston rod inside, and this adjusting lever produces displacement, the sectional area of this first port of capable of regulating along an axis.

27. the described bicycle with rear suspension avoiding vibration according to claim 24, wherein, the answer unit of this Shock absorber has an interval ring taps and that is set in this Master cylinder body inside and forms and be positioned at the permitted gas space of this first grease chamber one side by this ring taps interval, interval, and this permitted gas space is filled with high pressure gas.

28. the described bicycle with rear suspension avoiding vibration according to claim 24, wherein, the air pressure of the angrily chamber of this Shock absorber is identical with ambient pressure.

29. the described bicycle with rear suspension avoiding vibration according to claim 24, wherein, this Shock absorber be so that angrily pressure of chamber equal external pressure, and be that socket place at this Master cylinder body and auxiliary cylinder block forms most conduction troughs, make this do something in a fit of pique chamber and exterior by described conduction trough.

30. the described bicycle with rear suspension avoiding vibration according to claim 24, wherein, this Shock absorber also has a damper element that is installed in this chamber interior of doing something in a fit of pique.

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