CN1026677C - Flexible deformation frame bicycle - Google Patents

Abstract

The present invention provides a flexible deformable bicycle frame which can be used for realizing a folding bicycle. A deformable flexible structural style of an enclosed type bicycle frame is composed of at least four hinged positions, an upper extension frame which is connected with a front sleeve barrel is arranged on an upper hinged point, and a folding mechanism is arranged on the upper extension frame. An elastic tensioning structure is connected between a front hinged point and the front sleeve barrel, and a vertical tube which is connected with a bicycle saddle is arranged on a rear hinged point; a supporting frame for a clothes frame, which is connected with the clothes frame after crosswise connected with the vertical tube, is arranged on any hinged point except for the rear hinged point. A supporting frame for wheels, which is connected with a rear wheel, is arranged on the rigid position below the bicycle frame.

Description

Flexible deformation frame bicycle

What the present invention relates to is a kind of bicycle, specifically is a kind of flexible deformable vehicle frame that has, and has general and further can realize folding of bicycle.

Though the structural style of standard bicycle has many improvement, owing to be subjected to the non deformable restriction of rigidity of main car frame, the defective of many aspects is difficult to overcome.As, the discomfort for minimizing is ridden and jolted can only be provided with shock-damping structure respectively at positions such as saddle or front-wheel or trailing wheels, not only cumbersome complexity, and effect is also limited.And for example the time to miniaturization, folded form and aspect such as universal development, the version of this rigid-frame, the in men's style car that especially has the triangular form rigid-frame is just more powerless.For a change this situation, Chinese patent 88212913.9 has been introduced a kind of bicycle with elastically deformable body frame structure for automotive, by articulated form each bar side bar is connected into enclosed main car frame, and by the extension arm on this vehicle frame diverse location respectively with preceding wheeling supporting frame, parts such as back wheeling supporting frame and saddle connect and to form unit body.This kind structure has fundamentally changed the non deformable structural shape of bicycle main car frame rigidity, and the folding great convenience that provides of damping, power-assisted and further realization is provided.But this structure is perfect not enough at the aspects such as commonality of comformability, configuration conversion.

Chinese patent 92220228.1 has been introduced a kind of wheel bracing frame that can be used for the single armed version of bicycle, and the further simplification for bicycle structure alleviates deadweight, and easy disassembly particularly foldingly provides bigger convenience for what realize bicycle.

On the other hand, for folding bicycle, existing at present many bibliographical informations.What for example Chinese patent 88207943.3 was introduced is exactly a kind of fold mechanism for the folding bicycle use, but at present, the Foldable cycle that no matter has which kind of form fold mechanism, more ubiquitous problem is that structure is complicated, or it is folding or launch again to restore and be running condition just to finish dismounting by means of some special tool, use inconvenient, folding or launch consuming time many.Another problem is that the folding of these mechanisms is easier to, and launches to restore and guarantee then to be not easy for the required rigidity of normal operating condition.

It is more simple that the present invention's purpose at first provides a kind of structure, uses the bicycle of more convenient flexible deformable main car frame form.Further object of the present invention provides a kind of bicycle that can further realize the flexible deformable main car frame form of convenient and reliable fast folding and expansion on this basis.

Bicycle of the present invention has one and by four hinge point case type vehicle frame is separated into the polygonal main car frame of flexible deformable that is surrounded by four edges beam at least at least, and its each bar side bar can be linear pattern or shaped form.These four hinge point are roughly answered the office or are approached different parts such as vehicle frame top, below, the place ahead and rear, use with convenient.Hinge point is provided with a last Extension support that protracts up, and far-end connects with the front sleeve that is combined with preceding wheeling supporting frame and bogie car handle.Hinge point is provided with the standpipe that makes progress that an end can connect saddle in the wings.In other any one hinge point except that the articulated section, rear that is provided with standpipe, for example the top hinge point also is provided with a hanger holder of making cross-join through connector and standpipe, its far-end connects with the middle part or the rear portion of clothes hanger, and the front end of clothes hanger then connects with standpipe.The axis that disposes stretcher, crank and sprocket wheel is arranged on the rigidity position of vehicle frame below, at the axis position of vehicle frame or near the rigidity position it be provided with far-end and cooperate the back wheeling supporting frame that is connected with trailing wheel.Any one hinge point in main car frame and directly not being connected in is provided with an elastic tension structure that is used to keep the main car frame shape and has a damping accumulation of energy effect between the body frame structure for automotive of this hinge point be essential to this bicycle, the body frame structure for automotive that it connected can be other hinge point in the flexible enclosed shape main car frame or a side bar in the polygon, the version among the CN88212913.9 as described above; Also can seal main car frame other roof beam structure part in addition for flexibility, for example comparatively ideal is the front sleeve position, perhaps other desirable suitable position.When the elastic tension structure is arranged on as above-mentioned document in the osed top main car frame, can adopt as said stretching of the document or compression-type elastic construction; If be arranged on outside the osed top main car frame, for example be arranged on and front sleeve between the position time, then can adopt tension type elastic component, as various extension springs etc.

Can be known by polygonal constructional feature, work as polygon, after the arbitrary cornerwise length in for example above-mentioned tetragonal deformable main car frame or the angle on any adjacent both sides were fixed, the shape of this polygon main car frame promptly was fixed and is no longer variable.For the polygon more than the quadrangle, the different diagonal line or the angle numbers that need to fix of only being should suitably increase.Therefore adopt the above polygon of quadrangle generally how unnecessary.Flexible deformable vehicle frame its polygonal shape after being subjected to the loading force effect will change, that is: catercorner length and each adjacent side angle will change.No matter the elastic tension structure is located within the main car frame still is outside it, its effect essence is exactly to impose the rightabout power of the deformation direction with this position of vehicle frame by the point of attachment at itself and vehicle frame, with this deformation force of balance, reaching and keep diagonals of polygon or adjacent side angle and change in the scope that its elastic force allows, is the required necessary rigidity of riding thereby keep main car frame in the mode of dynamical equilibrium.Just because of this, the elastic tension structure that is provided with above-mentioned which kind of position and/or version no matter, its elastic force all in the mode that can regulate for well, to adapt to different condition of services better.This regulative mode can be applied in a flexible way, for example adopt the form of the plurality of elastic member group of scalable working component quantity, or adopt the single elastic component to adjust or to limit elastic working part situation or length, mode or other the desirable any appropriate configuration form introduced as above-mentioned Chinese patent.

Different uses field, use object and application target bicycle, with the difference of employed road surface and riding speed, the specification pattern of vehicle frame is distinguished to some extent, for example members such as standpipe, preceding wheeling supporting frame is just had different requirements with ground-surface inclination angle.Following table is the unified in the world speed of a motor vehicle and the relation of the ask for something between the standpipe inclination angle to car type commonly used:

Car type use always the speed of a motor vehicle (kilometer/hour) standpipe inclination angle (degree)

Common car 14-15 66-68

Light roadster 18-20 68-70

Este wagon 20-30 70-72

Racing cycle 40-50 72-74

Runway racing car 50-60 73-75

The bicycle of rigidity main car frame configuration can only be the special train special use to this at present, has both increased the kind of vehicle, inconvenience and human discomfort when also having limited the vehicle operation scope or having increased the conversion range of use.Because the deformability of above-mentioned flexible main car frame, for make same car conversion vehicle kind change application target or satisfy fit angle between members such as the comfort requirement conversion standpipe of riding posture, preceding wheeling supporting frame provide may with great convenience.The just elastic range of main car frame that the elastic force of elastic tension structure solves, and the mutual angular relationship between above-mentioned each member is determined by static installation site of vehicle frame and shape.But just since the shape of main car frame by the realization of elasticity locking structure with keep, therefore by changing its installation length, for example on the elastic tension structure, be provided with the length adjustment mechanism of or appropriate form that bearing pin interruption adjustable adjustable continuously, can realize regulating and the purpose that changes the angle that cooperatively interacts between above-mentioned relevant member very simply and easily with screw thread.

For further simplified structure, alleviate tare, and being convenient for changing between the wheel of the different wheels with adaptation of easy disassembly and maintenance footpath, the single armed type wheel bracing frame of having been introduced as Chinese patent 92220228.1 is adopted in above-mentioned front and back wheel bracing frame suggestion.When adopting this wheel bracing frame, its far-end passes the shaft sleeve that also can be located with the point of attachment that cooperates of wheel for making axletree.Its locate mode can adopt widely used various conventional structure form between the axis of present standard bicycle and axis sleeve, the for example A profile shaft bearing structure that matches with axle shelves that the axletree corresponding site is oppositely arranged with the axle bowl of opposing setting of the two ends of shaft sleeve, or shaft sleeve two ends is with a grade Type B bearing arrangement that matches of the axle bowl that is oppositely arranged and the opposing setting of axletree corresponding site etc.Obviously, this moment, the difference of front and back wheel and standard bicycle front and back wheel just was that the wheel shaft of above-mentioned front and back wheel can freely rotate as the ordinary bicycle axis, and standard bicycle makes axletree fixing not rotatable because the end of wheel bracing frame directly is anchored on the axletree.This single armed type wheel bracing frame and axletree are exactly the dismounting operation that can greatly make things convenient for and simplify wheel with the direct preceence that the version that the shaft sleeve location of bracing frame end cooperates is brought, make its need relate to the dismounting relation of wheel and axle, needn't be again must be as standard bicycle front and back wheel now together with the axle dismounting.Owing to be the simple relation of an encapsulation and locking as essence between the chain drum of ordinary bicycle and the axis therebetween, its catch gear also only needs to use bearing pin or other more easy card holding structure to get final product.And only need between wheel and axletree can make its synchronous rotation by non-circular fit systems such as keyway or square shafts.This connection matching relationship that makes wheel simplifies that wheel-normally trailing wheel especially has special preceence for bicycle driving.Because it is the dismounting of bicycle drive wheel unavoidably all will relate to axletree, flywheel and chain at present, therefore very inconvenient.After adopting said structure, chain, flywheel all can be positioned on the shaft sleeve in company with axletree, and the dismounting of wheel is no longer relevant with it.As long as by suitable connecting mode, make flywheel drive axletree as screw thread, key pin etc. and rotate synchronously, promptly finish driving process drive wheel.This also is some differences that drive process with present standard bicycle.The easy of this version not only helps wheel assembling, maintenance, and fast folding that makes things convenient for bicycle and the volume that reduces after folding are also all had positive effect.

The bicycle of said structure form realizes that further folding is very easy.Be arranged within the dead front type main car frame or be not arranged between main car frame and the front sleeve for the elastic tension structure, only need at the suitable position of last Extension support a fold mechanism to be set, fold mechanism or other suitable fold mechanism that for example above-mentioned relevant document is introduced get final product.Be arranged at outside the osed top main car frame for the elastic tension structure, when for example being arranged between main car frame and the front sleeve, except that this fold mechanism, as long as any end in these elastic tension structure two union ends is as snap close, grabs etc. can discharge the connecting mode that breaks away from or loosen, in case this position is discharged, then kept effigurate main car frame originally because of having cancelled the tensile force that the elastic tension structure is applied, whole vehicle frame promptly becomes " softness " state of Free Transform arbitrarily, both made things convenient for various folding operations, the vehicle frame volume after folding is further dwindled.As further improvement and perfect, all can adopt articulated structure at clothes hanger and hanger holder and with the connection place of standpipe, as use common members such as ears sheet type articulation piece, meanwhile, make that hanger holder and connecting of standpipe infall to be that departing movable connecting mode will make folding more convenient.For example by suitable connector, with standpipe and hanger holder the two one of be fixedly connected and with the opposing party for having releasing mechanism, but or realize that with the two connector that is releasing structure this movable connecting mode is not difficult, wherein more simple and reliable with the connector that adopts the former form.Decontrol releasing mechanism when folding, hanger holder and standpipe are limit by its crossover location promptly no longer, can drive clothes hanger further to the position folding that more helps reduced volume.In case of necessity, also can adopt can be to crank turnover or the version of rotating around crank for stretcher.

Because flexible main car frame can be done the amoeboid movement of appropriateness with pitch force in the scope that elastic tension structural elasticity power allows when riding, it is desirable beyond doubt and be not difficult to realize therefore to utilize its amoeboid movement to change pitch force into auxiliary driving force.For example working as the elastic tension structure is arranged within the osed top main car frame, Chinese patent 88212913.9 is described as described above, with reference to the disclosed structure of this patent, change the vehicle frame amoeboid movement into oscillating traverse motion earlier by swinging structure, change the unidirectional rotary motion that can become auxiliary driving force into through suitable ratchet device again.When the elastic tension structure is arranged on outside the osed top main car frame, equally can be by the fork of appropriate form is set on vehicle frame, for example connect one one end dissociatives at adjacent two hinge point places on the vehicle frame and the suitable position at the other end and middle part also is hinged on the fork on this two hinge point of vehicle frame respectively, its free-end can be done reciprocal swing with the amoeboid movement of vehicle frame.Change swing into unidirectional rotatablely moving by mechanisms such as ratchet device or differential clutchs again, can cooperate with sprocket wheel and become auxiliary driving force.Wherein with sprocket wheel between indirect driving multi-form that cooperates and can have direct drive and accumulation of energy transition structure in the middle of elastic clockwork spring etc.Can directly utilize hinge point on the vehicle frame to change the vehicle frame amoeboid movement into unidirectional rotation in addition, even also and pass to sprocket wheel again as auxiliary driving force through differential clutch or ratchet device.

Be the structure that example specifies above-mentioned bicycle below, but the scope of the above-mentioned theme of the present invention is not limited only to this example with a kind of Foldable bicycle shown in the drawings.

The structural principle of Fig. 1 bicycle of the present invention

Fig. 2 vehicle frame articulated section structure

Fig. 3 elastic tension structure

The activity draw bail of Fig. 4 standpipe and hanger holder

The A-A figure of Fig. 5 Fig. 4

The structure of Fig. 6 trailing wheel axial region

The A-A figure of Fig. 7 Fig. 6

Fig. 8 fold mechanism

The A-A figure of Fig. 9 Fig. 8

Figure 10 stretcher and crank connection structure

The A-A figure of Figure 11 Figure 10

Figure 12 boosting mechanism

The A-A figure of Figure 13 Figure 12

The complete vehicle structure principle of this routine bicycle as shown in Figure 1.The middle part be the main car frame of closed configuration, roughly upper and lower, forward and backward position through on hinge 8, preceding hinge 9, time hinge 10 and after hinge 11 and form the polygon main car frame of a flexible deformable, the auxiliary section of below and axis 24 is a rigid construction.Protract and be provided with the last Extension support 6 that a middle part is provided with fold mechanism 7 in last hinge 8 places, its far-end is welded with front sleeve 4.Wheeling supporting frame 3 and bogie car were 5 lower standing tube before socket was combined with in the front sleeve 4.Be provided with one between preceding hinge 9 and the front sleeve 4 and include extension spring in interior elastic tension structure 27, itself and front sleeve 4 are fixedly connected, and connect with the locking hook 271 that can break away from mutually with preceding hinge 9.Back hinge 11 places are to being provided with the standpipe 14 that a far-end is used to settle saddle 15.Last hinge 8 places are except that being provided with Extension support 6, also be provided with a pair of clothes hanger support of stretching to the back upper place 12 simultaneously, the infall of itself and standpipe 14 is made crossbinding through active coupling 13, far-end through after hinge part 18 be connected in the middle part of clothes hanger 17, the front portion of clothes hanger 17 connects with standpipe 14 place near to the upper end through preceding hinge part 16.Wheeling supporting frame 23 after the vehicle frame axis auxiliary section at axis 24 places has been fixedly connected backward, the trailing wheel 34 that its far-end assembling is driven by axis sprocket wheel, chain and flywheel.Here the single armed type supporting construction that said front and back wheel bracing frame all adopts Chinese patent 92220228.1 to be introduced, and adjust the shaft sleeve 30 that is provided with on the connector 2 and 22 through the activity of its far-end respectively and cooperate connection with forward and backward wheel shaft, repeat no more.Two stretchers 26 that connect with Middle axle crank 25 are to be the axle rotation around the crank major axis, and can be locked in the structural shape of normal use location by the locating dowel pin 29 of band elastic construction.After making its position that goes out of lock along crank long axis direction pulling locating dowel pin 29, stretcher 26 can freely rotate, and uses when being convenient to bicycle folding, and concrete structure can be referring to Figure 10 and Figure 11.

Fig. 2 is the structure at hinge 9 positions before the vehicle frame, and all the other each articulated section structures are similar therewith, and difference is in the fork 37 that also is hinged with simultaneously in the assistive drive mechanism herein.The hinged place is socketed within the ears chip architecture 93 of roof beam structure lower end by the upper end of lower beam frame, makes articulated lifting arm through bolt 91 and sleeve pipe 92 therebetween.Its outside is hinged with fork 37.

Above-mentioned elastic tension structure such as Fig. 3 by two-part structure, comprise that promptly the elastic regulating structure partial sum installation length adjustment structure of extension spring 27 is partly formed.Whole elastic tension structure front end is welded on the front sleeve 4, and serve as reasons snap lock card 270 locking of band handle of rear end prevents that the hook 271 that comes off is hooked on preceding hinge 9 places of vehicle frame.Socket has cooperated a spacing collar 272 with the negative thread that adapts with this spring spiral outside the spring 27 of elastic regulating structure, so spacing collar 272 can be made spiral advance and retreat along spring 27 and moves.Be in the outer spring section retractable of this sleeve, be the elastic working part, the spring section that is within this sleeve is then limited not flexible work by the negative thread of sleeve.The inside and outside spring length ratio of regulating sleeve can realize adjusting according to needs such as load the purpose of elastic force.The installation length adjustment structure is for being respectively arranged with left and right sides screw thread at the two ends of open circuited elastic tension structure pull bar 282, and is respectively arranged with corresponding right-and-left threaded screw-casing 281 with two ends simultaneously and makes screw thread fit.Rotate screw-casing 281 and can make moving that the pull bar 282 at two ends does to elongate or shorten, reach to standpipe 14 and before the cooperatively interact purpose of stepless adjustment at inclination angle of wheeling supporting frame 3 grades.When dismounting or when folding, if desired, need only plate dynamic elasticity pintle hook lock sheet 270, can make that hinge 9 is separated on hook 271 and the vehicle frame.

Fig. 4 and Fig. 5 are the structures of hanger holder 12 and standpipe 14 infall connectors 13.Wherein having stay hook 131 a pair of and the hook-shaped groove that hanger holder 12 adapts is welded on the standpipe 14, be hinged with a pair of movable hook 133 with hinge 132 on it, they can be respectively fasten a pair of hanger holder 12 snap closes are lived with the hook groove of stay hook mutually, and the corresponding site of the hanger holder 12 that cooperates with this place can be provided with suitable additional strengthening.On the stay hook 131 and be provided with the lock tube 134 of a band elastic construction 135, can cooperate with corresponding boss on two movable hooks 133 movable hook is locked in the buckling state position.Need discharge the coupled situation of hanger holder and standpipe as folding bicycle, then only need the lock tube 134 of lift belt elastic construction, it is broken away from the boss of movable hook cooperates, two movable hooks 133 can freely rotate around axle 132 hanger holder 12 is discharged, but make its free fall, and drive clothes hanger 17 is rolled over downwards.

Fig. 6, Fig. 7 are the axletree connection part structures of back wheeling supporting frame end.Be welded with a shaft sleeve 30 on the movable regulating part 22 of back wheeling supporting frame 23, and be provided with the lock braking mechanism that rises therebetween.The two ends of shaft sleeve 30 are opposing to be provided with two axle bowls 302.The rear axle 19 that has corresponding axis shelves 301 is set in the shaft sleeve 30, match with diaxon bowl 302 through ball, and the nut 192 that is locked is locked on the shaft sleeve.This is the structural shape of common bicycle A type axis.Also can adopt the structural shape of ordinary bicycle Type B axis in addition, can be more simple.One end of rear axle 19 is the same with ordinary bicycle to be connected with flywheel through free wheel base 201, and axis sprocket wheel 250 can drive rear axle 19 rotations through chain 21 and flywheel 20.The other end of rear axle 19 matches with the axle sleeve 36 that is connected with brake hubs 35 through a square shaft part 191.Lock pin 32 double locking of axle sleeve 36 band jump ring 33 on the spiral clamp handle 31 in its outside and handle are on rear axle 19, and middle the narrow section of jump ring 33 can be fastened on the rear axle 19 in the corresponding grooves, stops axle sleeve 36 to be moved outward.When need dismounting trailing wheel, lock pin 32 is laterally promoted, when making jump ring 33 move to its end bellend to be placed in rear axle thereupon, promptly no longer tighten hind axle, after rotating and taking off handle 31, the trailing wheel that can link with single-piece brake hubs 35 and axle sleeve 36 and through spoke and brake hubs withdraws from and finishes dismantlement work along rear axle.The structure of front-wheel axial region is except that free wheel base and flywheel part, and the structure of remainder and above-mentioned trailing wheel axial region is identical.

Fig. 8, Fig. 9 are for realizing the folding a kind of better way fold mechanism 7 recommended of car body.Wherein have a pair of respectively with open circuited front and back section on Extension support 6 link and with the relative thimble tube joint 74 in end, its outside face has screw thread, and match with connection adapter sleeve 71 with corresponding negative thread.Respectively having a cross-sectional plane on two joints 74 of front and back is the columniform alignment pin 75 that is milled with the pair of parallel face, and cooperates connection with the coupling block 72 that is provided with elongated slot 73 simultaneously.The middle part of elongated slot 73 does not allow its narrow section that freely rotates 78 for only allowing bearing pin 75 linear moving, and two ends are the expansion section, aperture 76 for allowing bearing pin 75 to rotate then.Two joints, 74 relative places, crest clearance also are provided with a spring washer 77.The last Extension support of joint 74 before and after being associated with is pushed against mutually in packing ring 77 both sides, rotation adapter sleeve 71 makes it entangle two joints 74 simultaneously and screws, the double action of coupling block 72 and adapter sleeve 71 by belt length groove 73, add the tension force of spring washer 77, last Extension support 6 can guarantee normally ride required enough rigidity and steadiness requirement.When needing to fold, adapter sleeve 71 need only be rotated and exposes the engagement end portion of two joints 74, the elastic force of spring washer 77 can make two end junctions 74 loosening, Extension support 6 is gone up for two sections in the pulling front and back round about, after making bearing pin 75 in the joint 74 move to the expansion section, aperture 76 at elongated slot 73 two ends, because bearing pin 75 can rotate therein, similar articulated form, thus can realize that the front and back section that will go up Extension support 6 folds up mutually.For making it make folk prescription to folding, on its folding rightabout position, can be provided with locating dowel pin 79, stop it catadioptric to this direction.

Based on said structure, as it is not difficult to desire to add assistive drive mechanism, shown in Figure 12～13.The upper end of the fork 37 of one middle part band knuckle and middle part knuckle portion are articulated in hinge 9 and following hinge 10 positions before the vehicle frame respectively, and it is socketed with one down in connection holes on end dissociative position, and be connected in can be around the shifting block 38 of axle 40 rotations on the vehicle frame.What be mated is the accumulation of energy differential clutch 39 that only allows work to clockwise rotate that is provided with on the axle 40.The also coaxial elastic clockwork spring 42 that is connected with of this differential clutch.With fastening what connect is the linkage gear 43 that is placed on the same axle by the power-actuated going barrel of clockwork spring elasticity 41.Match with sprocket wheel 250 with the power-assisted differential clutch 252 of its ingear driven gear 251 through sprocket wheel 250 axial region settings.Another reciprocal driving differential clutch 253 on sprocket wheel 250 is gone back the while and is arranged at axis 24 matches.With the amoeboid movement of jolting of vehicle frame, the free-end of fork 37 can be done oscillating traverse motion, stirs accumulation of energy differential clutch 39 through shifting block 38 and clockwise rotates and make clockwork spring 42 tighten up accumulation of energy.When stopping trample action, axis 24 and on driving differential clutch 253 transfixions, the energy of clockwork spring savings discharges through going barrel 41, drives linkage gear 43 and clockwise rotates, drive the rotation of sprocket wheel continuation inhour through driven gear 251 and power-assisted differential clutch 252 again, become propulsive effort.When by the trample action active drive, because of the axis rotating speed is higher than the rotating speed of power-assisted differential clutch 252, so latter's idle running can not provide the assistive drive effect.In addition, can also be on fork 37 be that the center is symmetrical arranged two shifting blocks 38 with accumulation of energy differential clutch 39, the reciprocally swinging of fork can be utilized simultaneously and change auxiliary driving force into.

Members such as the related beam in each position, frame can select to use the tubing of suitable diameter and/or material routinely according to the stressing conditions at its position, place in the said structure.Above-mentioned structure of not pointing out specially and coupling part can with reference to or continue to use present all kinds of bicycle in the routine techniques measure that this appropriate section adopted, repeat no more.

Be not difficult to find out by foregoing, the bicycle of this structural shape advantage at first just is simple in structure, good damping effect, and comformability and highly versatile, no matter be that load weight changes, still changes the standpipe inclination angle for adapting to ride purpose or level of comfort needs of difference, all can be by the realization of adjusting elastic tension structure.The employing of single armed type wheel bracing frame has greatly made things convenient for the different footpath replacings of wheel and general of taking turns again, and Applicable scope is greatly expanded.In particular for realize bicycle convenient, reliably, folding and recovery promptly created utmost point condition easily.Folding and do not need any additional or special tool when restoring fully, can free-handly operate, and only need to receive stretcher, promote lock pin and unload front and back wheel, unclamp unitor between hanger holder and standpipe, throw off the hook of elastic tension structure and unclamp a few step simple operationss of fold mechanism at last and the vehicle frame folding can be become very small size vanning, or launch to restore bicycle in reverse order for the running condition of normally riding by revolving.Through test, free-hand finish above-mentioned whole folding or launch the recovery operation process only need about one minute time.

Claims (18)

1, a kind of flexible deformation frame bicycle has the flexibility sealing framework of articulated structure and the extension arm on this framework connects with the preceding wheeling supporting frame of front vehicle wheel and handlebar, the back wheeling supporting frame and the saddle of rear wheel respectively; Case type main car frame is separated into four edges beam at least by four hinge point that are on the different azimuth at least, wherein be provided with Extension support (6) forward from the articulated section, top (8) of vehicle frame, its far-end is connected to the front sleeve (4) that can match with preceding wheeling supporting frame (3), from articulated section, vehicle frame rear (11) to being provided with the standpipe (14) that end can connect saddle (15), near vehicle frame and rigidity middle shaft part that the axis (24) that has crank (25) and stretcher (26) matches, be provided with far-end and can cooperate the rearward extending back wheeling supporting frame (23) that connects with trailing wheel, it is characterized in that in articulated section, vehicle frame rear (11) other hinge point in addition is provided with one through the hanger holder (12) of connector (13) with standpipe (14) cross-join, its far-end through after connector (18) and clothes hanger (17) clothes hanger (17) that links also connect with standpipe (14) simultaneously by preceding connector (16), between above-mentioned arbitrary hinge point and the direct coupled vehicle frame of different these hinge point, be provided with an elastic tension structure (27) that is used to keep main car frame shape and damping.

2, bicycle as claimed in claim 1 is characterized in that said elastic tension structure (27) is for can be by the spring of spacing collar (272) restraint of labour partial-length or the spring assembly structure of selectively operating number of packages amount.

3, bicycle as claimed in claim 1 or 2 is characterized in that said elastic tension structure (27) is arranged between main car frame the place ahead hinge point (9) and the front sleeve (4).

4, bicycle as claimed in claim 3, it is characterized in that said elastic tension structure (27) for the extension spring member, it is outer to be combined with one at least and to have and adapt with this spring spiral status and therefore can do that the spiral advance and retreat move and the spacing collar (272) of regulating the inside spin of this spring usable length along spring.

5, bicycle as claimed in claim 3 is characterized in that said elastic tension structure (27) is provided with the adjustable telescoping member (28) of its installation length of scalable.

6, bicycle as claimed in claim 1 is characterized in that having at least a side to connect form for the activity that can break away from coupled situation in the connection place of said elastic tension structure (27) and vehicle frame and front sleeve (4).

7, bicycle as claimed in claim 1 is characterized in that the said Extension support (6) of going up is provided with fold mechanism (7).

8, bicycle as claimed in claim 7, it is characterized in that said fold mechanism (7) for be symmetricly set in the adapter sleeve (71) and can be respectively with the front and back section on Extension support (6) joining front and back Couplings (74), being set in the coupling block (72) that offers the elongated slot (73) that does not allow this bearing pin freely to rotate by a wherein set separately bearing pin (75) links, the expansion section, aperture (76) that elongated slot (73) has at least an end to have to allow bearing pin (75) freely to rotate, between adapter sleeve (71) and Coupling (74) is running-fit, can can be provided with locking mechanism between adapter sleeve (71) and Coupling (74) in case of necessity along the axial do sealing of last Extension support (6) or moving forward and backward of Coupling joint portion, exposure front and back.

9, bicycle as claimed in claim 1 is characterized in that the preceding connector (16) of said clothes hanger (17) and back connector (18) are articulation piece.

10, bicycle as claimed in claim 9, it is characterized in that said connector (13) at hanger holder (12) and standpipe (14) infall therewith at least one in the two be the movable connecting mode that has releasing mechanism.

11, bicycle as claimed in claim 10, it is characterized in that said connector (13) is gone up and had the stay hook (131) that connects the groove structure that is adapted with hanger holder (12) and connect with it also by hinge (132) at standpipe (14) for being fixedly connected can fasten the movable hook shape component (133) that holds hanger holder (12) mutually, is provided with the latching device (134) that can discharge its buckling state between stay hook (131) and movable hook member (133).

12, bicycle as claimed in claim 1 is characterized in that said stretcher (26) is for serving as axle also can be locked in normal use location by location structure (29) around its rotation movable structure with the major axis of crank (25).

13, bicycle as claimed in claim 12 is characterized in that the locating dowel pin of said location structure (29) for band elastic reset member.

14, bicycle as claimed in claim 1 is characterized in that having one in said wheel bracing frame (3) and (23) at least is the load-carrying element of single armed support wheel.

15, bicycle as claimed in claim 14, the cooperation place that it is characterized in that said single armed type wheel load-carrying element and axletree is for wearing the also shaft sleeve (30) of positioning car wheel shaft, and wheel is locked on the axletree through the lock pin (32) of band elastic construction (33).

16, bicycle as claimed in claim 15 is characterized in that said shaft sleeve (30) is threaded and disposes the form of the bearing arrangement (302) that cooperates with the corresponding site of axletree for two ends.

17, as claim 15 or 16 described bicycles, it is characterized in that the set single armed type wheel bracing frame of said shaft sleeve (30) be cooperate in the drive wheel bracing frame shaft sleeve be through screw thread and the fastening connection of flywheel (20) and simultaneously classical prescription profile shaft section (191) cooperate the live axle (19) of connection with drive wheel (34).

18, bicycle as claimed in claim 1, it is characterized in that in two of the dead front type main car frame adjacent hinge point (9), (10) be provided with the fork (37) that one the one end dissociative other end and middle part also are articulated in this two hinge point respectively simultaneously between, its free-end is provided with a dial axis (38) that is socketed in this end connection holes at least, dial axis (38) matches with accumulation of energy differential clutch (39) on being arranged at vehicle frame, stir it and make unidirectional rotation, by being meshed with the driven gear (251) that is matched with on the sprocket wheel (250) through power-assisted differential clutch (252) with linkage gear (43) that the elastic clockwork spring (42) of the coaxial connection of this differential clutch drives, sprocket wheel (250) is through being arranged at matching with axis (24) with the rightabout differential clutch of power-assisted diff (252) (253) on the axis (24).

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