CN101125567A - Bicycle with shock-absorbing device - Google Patents

Abstract

The invention relates to a bicycle with a shock absorbing device, comprising a bicycle rack unit, a group of seating washers connected to the bicycle rack unit, a shock absorbing device articulately arranged in the bicycle rack unit, a bicycle wheel unit articulately connected with the bicycle rack unit, a drive device driving the bicycle rack unit to work, and a braking unit limiting the action of the bicycle rack unit. The bicycle rack unit comprises a main bicycle frame which is relatively arranged, and a second bicycle frame which acts relative to the main bicycle frame; the shock absorbing device is articulately connected between the main bicycle frame and the second bicycle frame so as to buffer and bear the acting force of the movement and the displacement of the second bicycle frame; the main bicycle frame is provided with a lower pipe which is connected between a sleeve and a base; the lower pipe is provided with a hole; the shock absorbing device can be partially positioned in the lower pipe or perforate the lower pipe.

Description

Bicycle with shock absorbing apparatus

Technical field

The invention relates to a kind of bicycle, be meant a kind of bicycle especially with shock absorbing apparatus with preferable shock-proof effect.

Background technology

Along with compatriots to the attention of outdoor activity and the popularization of sports for the entire people stress-relieving activity, existing more and more people is engaged in the activity that has motion and leisure purpose concurrently, wherein, driving bicycle is to be easier to carry out and very popular activity, the motion of mountain-climbing Mountain bike especially is subjected to having deep love for liking of outdoor activities person, because mostly the mountain-climbing Mountain bike is to drive on without the uneven road surface of laying, compared to the bicycle of generally travelling frequently, must have the vehicle frame that can bear than high impact forces, easily control and keep the handle of vehicle body balance, hypertrophy and tool height grab the ground tread before, trailing wheel, reach most important the overcome bigger road barrier thing and the suspension system of accidental relief, how most mountain-climbing Mountain bike can be equipped with a shock absorbing apparatus at front-wheel or trailing wheel, but in order to reach better shock-proof effect, even can be preceding, trailing wheel portion is equipped with a shock absorbing apparatus respectively, has two suspension systems of better shock-proof effect with formation.

In order to improve the shock-proof effect of mountain-climbing Mountain bike, many bicycles maker also actively starts to develop the design that can effectively promote the shock-absorbing performance, wherein, increase the design of the shift length of the relative vehicle frame of trailing wheel, be one can effectively increase the scheme of back shock-absorbing performance, but for the development and Design personnel of mountain-climbing Mountain bike, except promoting shock-proof effect, must consider that the back suspension system Shuais Yu Brake car Effect on Performance to trampling Gong.Therefore, on development and Design, still have sizable space and demand improved, do more selection for the customer so that the better shock-absorbing design-calculated of tool bicycle to be provided at suspension system.

Summary of the invention

Therefore, purpose of the present invention is to provide a kind of shock absorbing apparatus that allows pass the method for pipe down, reaching the shock absorbing apparatus bicycle with above-mentioned effect.

The present invention further provides one and be suitable for being installed on a bicycle, and the cycle frame with shock absorbing apparatus of preferable shock-proof effect can be provided.

So, the seat cushion, one that the bicycle that the present invention has a shock absorbing apparatus comprises a vehicle frame unit, one group of knot to this vehicle frame unit is hubbed at the actuating device that wheel unit, that shock absorbing apparatus, in this vehicle frame unit is articulated in this vehicle frame unit drives this wheel unit running, and one can limit this wheel unit Huo Dong De Brake car unit.

This vehicle frame unit comprises a main car frame that is corresponding setting, and the inferior vehicle frame of this main car frame activity relatively.

This seat cushion is that group knot to the main car frame of this vehicle frame unit is taken advantage of seat for a user.

This shock absorbing apparatus is the main car frame that is hubbed at this vehicle frame unit, and is articulated with this vehicle frame, to cushion and to bear the application force that this vehicle frame activity bit is moved.

This wheel unit comprises a front-wheel of the bottom, main car frame one front side that is articulated in this vehicle frame unit respectively, and a trailing wheel of this vehicle frame one rear side bottom, and this front and rear wheel can be jointly to standing on the plane.

This actuating device is to be installed between this vehicle frame unit and the wheel unit to rotate to drive this wheel unit.

This Brake car unit comprises and acts on this wheel unit and can limit the detent that this takes turns movable running, and this takes turns the operating portion that applies with unlocking resistance relatively to control this detent.

The cycle frame that the present invention has shock absorbing apparatus then comprises a main car frame that is corresponding setting, a vehicle frame, and a shock absorbing apparatus that is articulated between this main car frame and this vehicle frame.

This main car frame has a following pipe that is connected between preceding pipe and the base, and this time pipe has a hole, makes shock absorbing apparatus can partly insert or run through this time pipe.

This main car frame activity relatively of this vehicle frame, this shock absorbing apparatus be available buffer and bear the application force that this vehicle frame activity bit is moved then.

By above-mentioned composition, utilization is pivoted and is positioned shock absorbing apparatus between this main car frame and this vehicle frame unit and pivot points design, bear this train chord position except buffering and move the application force that is produced, and can make the present invention provide better shock-absorbing performance, and can reduce the influence of the loss of stampede power and Jian Shao Brake car to shock absorbing apparatus by the design of this shock-absorbing.

Description of drawings

Aforementioned and other technology contents, characteristics and effect of the present invention in the following detailed description that cooperates with reference to graphic several preferred embodiments, can clearly be understood.

Fig. 1 is a side-looking assembly drawing, illustrates that the present invention has bicycle one first preferred embodiment that shock absorbing apparatus is arranged;

Fig. 2 is Fig. 1 one local combination of side view, and a vehicle frame unit of this first preferred embodiment and the configuration scenario of a shock absorbing apparatus are described;

Fig. 3 is the sectional perspective assembly drawing of a top view, and the shock-absorbing dress shake device that this first preferred embodiment is described is installed in the situation between a main car frame and the vehicle frame;

Fig. 4 is the sectional perspective assembly drawing of looking up, and illustrates that the shock-absorbing dress shake device of this first preferred embodiment cooperates one first articulated part to be installed in the situation of this main car frame;

Fig. 5 is a side-looking assembly drawing, illustrates that the present invention has bicycle one second preferred embodiment that shock absorbing apparatus is arranged;

Fig. 6 is the local combination of side view of Fig. 5, and a first connecting rod of this second preferred embodiment and the situation that one first articulated part is the different designs pattern are described;

Fig. 7 is the sectional perspective assembly drawing of overlooking, and the shock-absorbing dress shake device that this second preferred embodiment is described cooperates this first articulated part and this first connecting rod to be installed in situation between a main car frame and the vehicle frame;

Fig. 8 is a side-looking assembly drawing, illustrates that the present invention has bicycle 1 the 3rd preferred embodiment that shock absorbing apparatus is arranged;

Fig. 9 is the sectional perspective assembly drawing of looking up, and illustrates that one first articulated part of the 3rd preferred embodiment cooperates locations on, the locations group is tied the situation to a main car frame once;

Figure 10 is a local combination of side view, illustrates that pipe once that the present invention has bicycle 1 the 4th preferred embodiment that shock absorbing apparatus is arranged is the situation of different designs pattern;

Figure 11 is the schematic side view of a part, and the change in location situation of several unsteady pivotal points is described; And

Figure 12 is the present invention's one incomplete schematic side view, illustrates that Yi Brake car application force is applied to the situation of a trailing wheel.

The specific embodiment

Before the present invention is described in detail, be noted that in the following description content that similarly assembly is to represent with identical numbering.

Consult Fig. 1 and Fig. 2, the seat cushion 3, one that bicycle one first preferred embodiment that the present invention has a shock absorbing apparatus comprises a vehicle frame unit 1, one group of knot to this vehicle frame unit 1 is hubbed at the actuating device 6 that wheel unit 5, that shock absorbing apparatus 4, in this vehicle frame unit 1 is articulated in this vehicle frame unit 1 drives these wheel unit 5 runnings, and one can limit this wheel unit 5 Huo Dong De Brake car unit 7.

This vehicle frame unit 1 comprises a main car frame 10 that is corresponding setting, and the inferior vehicle frame 20 of these main car frame 10 activities relatively.

This seat cushion 3 is that group knot to the main car frame 10 of this vehicle frame unit 1 is taken advantage of seat for a user.

This shock absorbing apparatus 4 is the main car frames 10 that are hubbed at this vehicle frame unit 1, and is articulated with this vehicle frame 20, to cushion and to bear the application force that the 20 activity displacements of this vehicle frame are produced.

This wheel unit 5 comprises a front-wheel 51 of main car frame 10 1 front side end that are articulated in this vehicle frame unit 1 respectively, and a trailing wheel 52 of this vehicle frame 20 1 rear side end, and this front and rear wheel 51,52 can be jointly to standing on the plane 100.

This actuating device 6 is to be installed between this vehicle frame unit 1 and the wheel unit 5 to rotate to drive this wheel unit 5.

This Brake car unit 7 comprises that two act on the front and rear wheel 51,52 of this wheel unit 5 respectively and can limit the detent 71 of this front and rear wheel 51,52 movable runnings, and two control these two detent, 71 relative these front and rear wheels 51,52 respectively and apply operating portion 72 with unlocking resistance.

Preferably, this bicycle of the present invention more comprises an auxiliary shock absorbing apparatus 8 that is arranged between the front-wheel 51 of this main car frame 10 and this wheel unit 5.

Preferably, the main car frame 10 of this vehicle frame unit 1 has a seat pipe 11 for 3 groups of knots of this seat cushion, one preceding pipe assemblies 12 that are provided with at interval with this pipe 11 and are pivoted for this front-wheel 41, one is arranged at the base 13 of these pipe 11 1 lower ends, while should be an angle is connected to upward pipe 14 from this pipe 11 to one of this pipe 11 directions extension by preceding pipe assembly 12 certainly, one is connected to the following pipe 15 of this base 13, one contiguous this base 13 also is fixedly arranged on this time pipe 15 1 bottom faces 151 to articulate and to locate first strut member 16 of this shock absorbing apparatus 4, reaches second strut member 17 that is fixedly arranged on this pipe 11.Wherein, this pipe 11, pipe 14 and this time are managed 15 and are come down to match affixed and form a binding configuration (therefore, this main car frame 10 is also referred to as preceding spider) triangular in shape this on.

Should auxiliary shock absorbing apparatus 8 be to be installed between the preceding pipe assembly 12 of this main car frame 10, manage 12 of assemblies before this main car frame 10 and comprise a front fork tube 121,121 of this front fork tubes have the furcation 122 of accepting this auxiliary shock absorbing apparatus 8 and being pivoted for this front-wheel 51, assist shock absorbing apparatus 8 upwardly extending tube bodies 123 with one from being somebody's turn to do, should before pipe assembly 12 have more a sleeve pipe 124 around the tube body 123 of sheathed this front fork tube 121, and one be connected with at the tube body 123 of this front fork tube 121 and be positioned at handgrip 125 on this sleeve pipe 124, should go up pipe 14 is to be an angle ground from this sleeve pipe 124 to extend towards these pipe 11 directions with 15 of this time pipes, and this tube body 123 is to be to be subjected to this sleeve pipe 124 encirclements around self axis rotary moveable ground, when controlling these handgrip 125 activities, get final product this tube body 125 of interlock in regular turn, should auxiliary shock absorbing apparatus 8 and this furcation 122, and then can order about this front-wheel 51 and turn to and advance.

Form about one peristomes that run through 131 in 13 of this bases, wear the group knot for this actuating device 6, this actuating device 6 comprises that one is the step configuration body 61 that is located in this peristome 131 rotationally, and one be subjected to these step configuration body 61 interlocks and can drive the gear unit 62 of this wheel unit 5 runnings, in this preferred embodiment, this gear unit 62 is to be connected with this trailing wheel 52, advance along these plane 100 rotations with this trailing wheel 52 of direct drive, and then order about this front-wheel 51 and also rotate along this plane 100.Preferably, this step configuration body 61 has one and is corresponding and can wears group knot at this peristome 131 with being rotated, but and the crank assemblies 611 of this gear unit 62 of interlock, and two be connected with respectively in the pedal 612 of these crank assemblies 611 2 end opposite with the foot location application of force that makes things convenient for this user.

Consult Fig. 2, Fig. 3 and Fig. 4, in addition, this time pipe 15 has a narrow section portion 152 in abutting connection with the sleeve pipe 124 that is somebody's turn to do preceding pipe assembly 12, one wide section portion 153 in abutting connection with this base 13, one connects the interlude portion 154 of this narrow section portion 152 and this wide section portion 153, and one wear this wide section portion 153 and define the hollow sleeve 155 of a perforation that runs through up and down 156, wherein, if down watch from this user's ride position, this time pipe 15 is from being the pattern that caliber is widened gradually toward this base 13 by preceding pipe assembly 12, therefore, the width of this wide section portion 153 is the width greater than this narrow section portion 152, and this sleeve 155 can more conveniently be set.In addition, this shock absorbing apparatus 4 is to be can not touch these sleeve 155 ground and wore this perforation 156, and first strut member 16 of this main car frame 10 that is pivoted respectively, and be pivoted to this vehicle frame 20, wherein, this shock absorbing apparatus 4 is to be articulated by one first axis that articulates center-point 161 along one with this first strut member 16, and has a vertical distance h1 (see figure 1) between this first pivot joint center-point 161 and this plane 100.

In addition, this time pipe 15 be along one from should before pipe assembly 12 down and the tilt axis II that extends towards this base 13 be provided with, that is to say this narrow section portion 152, wide section portion 153, and interlude portion 154 forms a configuration relation that is angled straight lines along this axis II.

As Fig. 1 and shown in Figure 2, preferably, the inferior vehicle frame 20 of this vehicle frame unit 1 has two and is provided with at interval accordingly to press from both sides the frame body 21 of establishing this trailing wheel 52 of pivot joint simultaneously, reach and be hubbed at this two frame bodies, 21 outsides separately and respectively, and be pivoted to two first connecting rods 22, two second connecting rods 23 of this main car frame 10 respectively, by this, so that this vehicle frame 20 these main car frame 10 activities relatively.

Wherein, this two frame body 21 respectively has a pedestal portion 211 that supplies 52 groups of knots of this trailing wheel to be pivoted, be the Seat stay pipe 212 that one and this first connecting rod 22 that pipe 11 directions extend be articulated of an angle ground from this pedestal portion 211 respectively towards this main car frame 10, one rear lower fork tube 213 that is articulated with this second connecting rod 23, and the seat of contiguous this main car frame 10 manages 11 and be connected in pipe link 214 between this Seat stay pipe 212 and this rear lower fork tube 213, and this Seat stay pipe 212, rear lower fork tube 213 and this pipe link 214 are to match affixed and form a binding configuration (therefore, this vehicle frame 20 is also referred to as the Vee formation frame) triangular in shape.

Preferably, two first connecting rods 22 of this vehicle frame 20 respectively have one first articulated section 221 that is pivoted to this Seat stay pipe 212 respectively, be pivoted to one second articulated section 222 of second strut member 17 of this main car frame 10, and be pivoted to one the 3rd articulated section 223 of this shock absorbing apparatus 4, and this two second connecting rod 23 respectively has one the 4th articulated section 231 that is pivoted to this rear lower fork tube 213 respectively, and be pivoted to one the 5th articulated section 232 of the base 13 of this main car frame 10, in this first preferred embodiment, this is first years old, second, the 3rd articulated section 221,222, the 223rd, matching forms the pattern of a three-pointed hollow star framework.

What deserves to be explained is, in this preferred embodiment, the main car frame 10 of this vehicle frame unit 1 all is made by aluminum alloy with time vehicle frame 20, and each position assembly is with the welding manner Joint together, but should not limit the material and group junction type formula of this main car frame 10 and this vehicle frame 20 each position assembly with this, this main car frame 10, inferior vehicle frame 20 also can use other metallic material or composite material to make, and can integrated mode make, also can adopt the part assembly with the welding manner combination, and the mode that the part assembly is connected in one-body molded mode (is for example made, this first strut member 16 can be arranged on this time pipe 15 one-body moldedly, also the mode that can weld is solidly connected to this time pipe 15, maybe this time pipe 15 can combine with this base 13 one-body moldedly, also can welding manner and this base 13 Joints), perhaps also can utilizing for example is spirally connected or locks connection modes such as knot makes each position assembly organize knot mutually together, still can cooperate suitable design to make this main car frame 20 again, inferior vehicle frame 20 can be possessed enough and than safe structure intensity.

When driving this bicycle along a ground, and this front-wheel 51 just collides the obstacle of a protuberance when (figure does not show), this front-wheel 51 can upwards be praised along an axis I by these front fork tube 121 centers by this obstacle to hitting, and compress this auxiliary shock absorbing apparatus 8 and cause the upwards application force of spring of this front-wheel 51 to cushion this obstacle, when getting back to than flat ground surface, then can help the restoring force of shock absorbing apparatus 8 to push against this front-wheel 51 by this shop again and get back to the normal position, so, can effectively reduce of the impact of this obstacle, and have more comfortable riding quality this user.

When this trailing wheel 52 collides this ground-surface obstacle, then this trailing wheel 52 can be moved up perpendicular to this ground-surface vertical direction X in fact along one by this obstacle to hitting, and the frame body 21 that makes this vehicle frame 20 is influenced and be subjected to displacement, and this two first connecting rod 22 of interlock rotates with this 23 while of two second connecting rods edge curved arrow direction A as shown in Figure 2, and form the situation of this vehicle frame 20 relative these main car frame 10 activities, and buffering is sent to the spring application force of this vehicle frame 20 from this trailing wheel 52, simultaneously of the impact of this obstacle can be effectively reduced, more comfortable riding quality can be kept equally this user.

Consult Fig. 5, Fig. 6 and Fig. 7, be the present invention's one second preferred embodiment, this second preferred embodiment and this first preferred embodiment are roughly the same, main difference is: the design of this first preferred embodiment is the trailing wheel stroke (rear wheel travel) that is applicable to 4 English inch, the design of this second preferred embodiment then is applicable to the trailing wheel stroke of 6 English inch, for in response to this different result of use, in this second preferred embodiment, this first connecting rod 22, first strut member 16, and first strut member 16 has been done corresponding adjustment and modification with the pivot points of this shock absorbing apparatus 4.Compare with this first preferred embodiment, the size of the first connecting rod 22 of this second preferred embodiment is relatively large, even and have in addition to stride to establish and be connected these first connecting rod 22 in-to-in auxiliary rod portions 224 and this first connecting rod 22 sizes increased still can keep preferable structural strength, in addition, this first articulated part 16 is that width and length also are width and the length greater than this first articulated part 16 of this first preferred embodiment, and this shock absorbing apparatus 4 is to be articulated by one second axis that articulates center-point 162 along one with this first articulated part 16, has a vertical distance h2 between this second pivot joint center-point 162 and this plane 100, and h2 can be less than the h1 (see figure 1), so, the trailing wheel 52 of this second preferred embodiment is compared with this first preferred embodiment person, can bear bigger displacement range, and still can keep the preferable comfort level that drives by this shock absorbing apparatus 4.

Certainly, at this first connecting rod 22, this first articulated part 16, reach the design modification principle that first articulated part 16 is done with the pivot points of this shock absorbing apparatus 4, also can further use to design the bicycle of the different trailing wheel strokes of other tool, and be not only limited to 4 English inch and 6 English inch persons, select for the customer with the bicycle that more different performance specifications are provided.

Consult Fig. 8 and Fig. 9 and be the present invention 1 the 3rd preferred embodiment, itself and this first preferred embodiment is roughly the same, the two main difference is: the connection mode of this first strut member 16 and this time pipe 15, this first, in second preferred embodiment, this first strut member 16 is directly welding or one-body molded be connected in this time and manage 15, in the 3rd preferred embodiment, this first strut member 16 have two be provided with at interval one on lock-joining part 163 and lock-joining part 164 once, and this main car frame 10 comprises that more a weldering is connected in wide section portion 153 1 bottom surfaces of this time pipe 15 and the following locations 181 of contiguous this base 13, one is separately with this time locations 181 away from this base 13, and be welded in locations 182 on this time pipe 15 in-to-ins with wearing, reaching two wears the last lock-joining part 163 that connects this first strut member 16 respectively and should go up locations 182, the spiro connecting piece group of this time lock-joining part 164 and this time locations 181 (figure does not show), this first strut member 16 is to see through this time, last locations 181,182 and by this two spiro connecting pieces group firmly with this time pipe 15 group knot mutually.

Consult Figure 10, be the present invention 1 the 4th preferred embodiment, itself and this second preferred embodiment is roughly the same, main difference is: the following pipe 15 of this second preferred embodiment is and this first preferred embodiment is connected (see figure 6) between this sleeve pipe 124 and this base 13 along this axis II of the turning cylinder 613 by these crank assemblies 611 (see figure 5)s in the same manner with being an angled straight lines, and in the 4th preferred embodiment, the interlude portion 154 of this time pipe 15 is provided with along an axis III who extends under the turning cylinder 613 that is positioned at this crank assemblies 611 from this sleeve pipe 124, this narrow section portion 152 is downward with this 153 in wide section portion respectively from these interlude portion 154 2 end opposite, be connected to this sleeve pipe 124 and this base 13 K/UP, by this kind design, except car body is presented the fleetline moulding, also can make this shock absorbing apparatus 4 and this first strut member 16 second of place that is articulated articulate more close this plane 100 (referring to Fig. 5), position of center-point 162, and make these trailing wheel 52 (see figure 5)s have bigger displacement activity scope with respect to this main car frame 10.

Consult Fig. 1, Fig. 5 and Fig. 8, preferably, the gear unit 62 of the actuating device 6 of aforementioned four preferred embodiments all has a fluted disc group 621 that is subjected to these crank assemblies 611 interlocks, one is connected with the sprocket group 622 at this trailing wheel 52 1 wheel shafts 521 places, reaching an extension is connected between this fluted disc group 621 and this sprocket group 622, and be subjected to this fluted disc group 621 to drive and rotate and order about the chain 623 of these sprocket group 622 rotations along a sealing track, this trailing wheel 52 is can rotate along this plane 100 with the rotation of this sprocket group 622, and then order about this front-wheel 51 and also rotate along this plane 100, and this bicycle can advance mobile.

What deserves to be mentioned is, this fluted disc group 621 has at least one fluted disc 624, and this sprocket group 622 has at least one sprocket 625, and when fluted disc group 621 had most fluted discs 624, the diameter of each fluted disc 624 was unequal mutually, when this sprocket group 622 has most sprockets 625, the diameter of each sprocket 625 also is unequal mutually, by this, make this chain 623 be removable selectively the extension and be connected on one of them fluted disc 624 and one of them sprocket 625, and reach the effect of variable-ratio.In these preferred embodiments, this fluted disc group 621 is the fluted discs 624 with three different-diameters, and this sprocket group 622 is the sprockets 625 with nine different-diameters, but should not limit the number of this fluted disc 624 and this sprocket 625 with this, the number of this fluted disc group 624 and this sprocket 625 can change according to actual design and user demand.

Consult Fig. 1, what need supplemental instruction is, for some bicycle, when its trailing wheel 52 is subjected to displacement towards driving the ground-surface direction away from this, and when making the relative main car frame of next vehicle frame 20 10 movable, can interlock one back pivotal point produce the situation of floating displacement, this trailing wheel 52 is to be subjected to this vehicle frame 20 interlocks and to pivot with respect to this back pivotal point.Suppose to have a tangent line by sprocket 625 (a being connected with) periphery and a fluted disc 624 peripheries in rear axle, when this back pivotal point is moved to the position that is positioned on this tangent line, an application force that is sent to this chain 623 via this pedal 612 can cause this shock absorbing apparatus 4 to be stretched, and the susceptibility of this shock absorbing apparatus 4 is reduced, and when this back pivotal point is moved to the position that is positioned under this tangent line, the application force that is sent to this chain 623 via this pedal 612 can cause this shock absorbing apparatus 4 to be compressed, and makes the work doing efficiency of trampling that acts on this pedal 612 be subjected to loss.

In order to overcome the problems referred to above, especially to avoid trampling the loss of power, therefore, but preferred embodiment of the present invention is with several floating position points designs of this back pivotal point of bicycle and be positioned on the tangent line by these trailing wheel 52 sprockets, 625 peripheries and fluted disc 624 peripheries, or in the position of extremely close this tangent line.As shown in figure 11,, be to cooperate Fig. 1 to describe promptly with Figure 11 at this in this notion of explanation, be example explanation promptly with this first preferred embodiment, but this notion be applicable to too this second, third, the 4th preferred embodiment, or other enforcement situation.The notion of back pivotal point mainly stems from: when this trailing wheel 52 is subjected to this vehicle frame interlock and is moved with respect to this main car frame 10, the circular arc curvature that the motion track of trailing wheel forms is also inequality, so the trailing wheel motion track of each moment all can have a cooresponding back pivotal point (or being called the trailing wheel centre of gration).There are several back pivotal point a, b, c, d, e, f, g and h that are positioned at diverse location to be provided with along the straight line 90 of these chain 623 positions of a convergence, this straight line 90 is to be designed to be the state that almost coincides with the tangent line of sprocket 625 peripheries that are connected this trailing wheel 52 and fluted disc 624 (is to be example with the fluted disc 624 in the middle of commonly used being disposed at this) periphery, and the part of straight line 90 the most close fluted discs 624 can be positioned at this tangent line or be in extremely near the position of this tangent line, makes these backs pivotal point a, b, c, d, e, f, g and h also be positioned at this tangent line or is in extremely position near this tangent line.

When this trailing wheel 52 is subjected to displacement and when making this wheel shaft 521 also be displaced to location point a ', b ', c ', d ', e ', f ', the g ' of differing heights and h ', these trailing wheel 52 pairing back pivotal points (being equal to this wheel shaft 521 pairing back pivotal points) can move corresponding positions that these float some a, b, c, d, e, f, g and h.For example, if the wheel shaft 521 of this trailing wheel 52 is to be positioned at this location point g ', then this trailing wheel 52 will pivot along this back pivotal point g.Similarly, if the wheel shaft 521 of this trailing wheel 52 is to be positioned at this location point c ', then this trailing wheel 52 can pivot along this back pivotal point c.

When this trailing wheel 52 (is equivalent to location point shown in Figure 11 a) when this drives the road surface and is positioned at normal use location, this shock absorbing apparatus 4 can be by compression to 1/4 to 1/3 place of its maximum compressibility, and the position of these unsteady pivotal point a, b, c, d, e, f, g and h is the joint that is in close this chain 623 and this fluted disc 624, and can effectively reduce the loss of trampling power.When this trailing wheel 52 towards driving the ground-surface direction away from this when moving up, this back pivotal point can move to these positions of pivotal point a, b, c, d, e, f, g and h afterwards respectively along this straight line 90 backward with the size of shift length, to reduce the human discomfort of trampling that causes because of trailing wheel 52 displacements.This shock absorbing apparatus 4 also can be compressed and stretch because of this chain 623 moves to different fluted discs 624, with the reduction of rocking that these chain 623 moving process are caused.

Consulting Figure 12 and cooperate Fig. 1, is to be that example is Shuoed Ming Brake car application force to the influence of this shock absorbing apparatus 4 with this first preferred embodiment, but this explanation be useful in too this second, third, the 4th preferred embodiment, or other preferable enforcement situation.When a Hou Lun Brake car activated, You Yi Brake car directed force F can be applied on the active position 902 of this trailing wheel 52 along a directional line 901.Can form an angle theta between this directional line 901 and this plane 100.This angle theta is normally between 40～50 °.In this first preferred embodiment, this angle theta is 45 °.

This vehicle frame 20 has an instantaneous center of turn with respect to this main car frame 10 (InstantaneousRotation Center, be designated hereinafter simply as IRC), and this IRC is positioned at first articulated section 221 and first straight line 903 of second articulated section 222 by this first connecting rod 22, and an intersection of passing through second straight line 904 of the 4th articulated section 231 of this second connecting rod 23 and the 5th articulated section 232.Pass through this IRC and this Brake car power effect position 902 owing to can design the directional line 901 that makes this Brake car application force, so can effectively Brake car application force be reduced to minimum to the influence of this shock absorbing apparatus 4.Therefore, during the Ji Shi Zai Brake car, this shock absorbing apparatus 4 still can play a role fully.

Can following equation Shuo of the influence of Ming Brake car application force to this shock absorbing apparatus 4:

The inertial force (inertial force) that produces during ma=Shi Jia Brake car;

Mg=gravity (force of gravity);

Positive force before and after the Fr=Brake car (rear normal force, figure does not show);

Positive force before before the Ff=Brake car (front normal force, figure does not show);

Positive force (rear normal force) after during Fr '=Brake car;

Positive force (front normal force) before during Ff '=Brake car;

H=height of gravitational center (height of center of gravity);

μ=friction coefficient (coefficient of friction);

Wheelspan (wheel base)=a+b;

During the Brake car, making a concerted effort of horizontal direction is 0, therefore: ∑ Fx=0;

ma＝Fr′×μ；

Total resultant moment of ordering with respect to pf also is 0, therefore; ∑ Mpf=0;

ma×H+Fr′×(a+b)＝mg×b；

Fr′×μ×H+Fr′×(a+b)＝mg×b；

${\mathrm{Fr}}^{\′}=\frac{b}{a+b+\mathrm{\μ}\×H}\mathrm{mg};$

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

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

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

Can obtain at last $\tan \mathrm{\θ}=\frac{H}{a+b}.$

When Gai Brake car directed force F of Shi is passed through this IRC, this force direction line 901 is identical with the angle on this plane 100 and the wheelspan a+b and the formed angle of this center-of-gravity position height H of this front and back wheel, the component that shows Gai Brake car directed force F is respectively along second articulated section 22 of this first straight line 903 by this first connecting rod 22, with the 5th articulated section 232 of passing through this second connecting rod 23 along this second straight line 904, and can not cause 20 relative these main car frame 10 activities of this vehicle frame, therefore can this shock absorbing apparatus 4 of interlock yet by compression or stretch, it is the unlikely performance that interferes with this shock absorbing apparatus 4 of Gai Brake car directed force F of ，.

Consult Fig. 2, Fig. 6, Fig. 8, Fig. 9 and Figure 10, several preferred embodiments that the present invention has the cycle frame of shock absorbing apparatus all comprise a main car frame 10 that is corresponding setting, the one inferior vehicle frame 20 of these main car frame 10 activities relatively, reach one and be articulated in the shock absorbing apparatus 4 that bears the application force of this vehicle frame 20 activities between this main car frame 10 and this vehicle frame 20 with buffering, its structure is equivalent in aforementioned four preferred embodiments, be installed on the part of vehicle frame unit 1 and this shock absorbing apparatus 4 on this bicycle, and also with aforementioned four preferred embodiments in this vehicle frame unit 1 have identical structural change and characteristic with this shock absorbing apparatus 4, so do not repeat them here.

In these preferred embodiments, can be one-body molded except this first strut member 16 or welding or screw lock ways of connecting be arranged on this time pipe 15, this second strut member 17 equally can be one-body molded or the mode tied of welding or screw lock group be arranged at this pipe 11.

What deserves to be mentioned is that there is shock absorbing apparatus in the bicycle regular meeting with above-mentioned effect and manages the phenomenon of interfering down, therefore the invention provides a kind of method that allows shock absorbing apparatus pass down pipe, reaches the shock absorbing apparatus bicycle with above-mentioned effect.

The above person, only be one of the present invention preferred embodiment, can not limit the scope of the invention process with this, promptly the simple equivalent of being done according to the present patent application claim and invention description content generally changes and modifies, and all still belongs in the scope that patent of the present invention contains.

Claims (12)

1. the bicycle with shock absorbing apparatus is characterized by, and comprises:

One vehicle frame unit comprises a main car frame that is corresponding setting, and the inferior vehicle frame of this main car frame activity relatively;

One shock absorbing apparatus, an end is hubbed at the main car frame of this vehicle frame unit, and the other end is articulated with time vehicle frame, to cushion and to bear the application force that this vehicle frame activity bit is moved;

This main car frame have a pipe, one and the preceding pipe, that is provided with at interval of this pipe be arranged at this pipe lower end base, one from preceding pipe to the seat tube side to extend and be connected to this pipe one on pipe, and one from preceding pipe to the seat tube side to the following pipe that extends and be connected to this base;

Wherein this time pipe has a perforation that runs through up and down, and shock absorbing apparatus is not to be to wear this perforation contiguously.

2. according to claim 1 a described bicycle, it is characterized by, have a hollow sleeve and coat this perforation, this hollow sleeve and around the part of shock absorbing apparatus.

3. according to claim 1 a described bicycle, it is characterized by, manage under this and have a strut member, this shock absorbing apparatus is to articulate to be positioned at this strut member.

4. according to claim 1 a described cycle frame, it is characterized by, this time pipe is single pipe fitting.

5. according to claim 1 a described bicycle, it is characterized by, this vehicle frame is to see through first connecting rod and second connecting rod and main car frame to be connected, and this first connecting rod and second connecting rod are for this main car frame activity relatively of this vehicle frame.

6. according to claim 1 a described bicycle, it is characterized by, this main car frame extension line in pipe stage casing does not down pass through the central axial line of this base openings portion.

7. according to claim 1 a described bicycle, it is characterized by, this main car frame extension line in pipe stage casing down passes through the central axial line below of this base openings portion.

8. according to claim 1 a described bicycle, it is characterized by, pipe is a reclinate pipe fitting under this main car frame.

9. according to claim 1 a described bicycle, it is characterized by, the pipe upper surface is connected with last pipe lower surface under this main car frame.

10. according to claim 1 a described bicycle, it is characterized by, this vehicle frame comprises two Seat stays, two Chain stays, and has a rod member at least and link a Seat stay and Chain stay.

11. according to claim 1 a described bicycle, it is characterized by, this vehicle frame is one group of affixed pipe fitting, and forms leg-of-mutton binding configuration.

12. a cycle frame is characterized by, and comprises:

A main car frame that is corresponding setting, and the inferior vehicle frame of this main car frame activity relatively;

This main car frame have a pipe, one and the preceding pipe, that is provided with at interval of this pipe be arranged at the base of this pipe one lower end, simultaneously from should before the pipe assembly be an angle to this tube side to a pipe of going up that is connected to this pipe that extends, and one from preceding pipe to the seat tube side to the following pipe that extends and be connected to this base;

This time pipe has narrow section portion, the wide section portion in abutting connection with this base that an adjacency is somebody's turn to do preceding pipe, and the interlude portion of this narrow section portion of connection and this wide section portion, and the width of this wide section portion is the width greater than this narrow section portion.

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