CN105172965B - A kind of fast disassembly type bicycle - Google Patents

Abstract

The invention discloses a kind of fast disassembly type bicycle, its vehicle frame is in X-shaped rotatable folding, and each component of bicycle uses movable fastening mechanism with the connected mode of vehicle frame, and movable fastening mechanism makes dismounting more simple and fast of each component with vehicle frame, time saving and energy saving.The part of damage can be carried out quick-replaceable maintenance by user, also the folding bicycle part of different colours/decorative pattern can be carried out into free matched combined, be met the aesthetic requirement of individual.

Description

A kind of fast disassembly type bicycle

Technical field

The present invention relates to the vehicles, and it is a kind of fast disassembly type bicycle.

Background technology

Bicycle, also known as bicycle or bicycle, the small-sized ground vehicles of typically two wheels.After people rides car, trampled with pin Plate is power, is the green vehicles.English bicycle.Wherein bi means two, and cycle means to take turns, i.e. two-wheeled Car.In inland of China, Taiwan, Singapore, it is commonly referred to as " bicycle " or " bicycle ".Bicycle species is a lot, there is one Bicycle, tandem bicycle also have more person bicycles.

Bicycle is used for riding instead of walk, gone on a journey as the vehicles of environmental protection；Increasing people is using bicycle as fitness equipment Timber-used is gone on a tour come exercise of riding, bicycle；Bicycle is also a sports campaign in itself, there is road race, mountain region Cycle racing, Track cycling, stunt bicycle race etc..

Folding bicycle belongs to a classification of bicycle.General folded bicycle has vehicle frame folding joint and standpipe folding joint Form.By vehicle frame folding, by front and rear two-wheeled doubling together, it can reduce by 45% or so length.Vehicle can be put after folding Enter in boarding case and folding bag, and the boot of automobile., can be manual also without by external tools during folding By car folding and expanding.After folding by seat bar as the strong point so that fold after can stand surely.Folding bicycle carries, user Just it is comfortable, mature production technology.

But the folding process of this folding bicycle is relatively complicated, it is necessary to remove what certain amount control bicycle folded Latch, and some screws for tightening, spend and cost user and folded the substantial amounts of time.

Vehicle body fold simultaneously after still occupies larger space, and the profile after its folding is more strange, It is difficult to the aesthetic conceptions for meeting modern.

Therefore, still there is following defect in existing folding bicycle：

First, existing bicycle folding mechanism is complicated, cumbersome, the deployment lifting process consumption plenty of time；

2nd, the vehicle frame of existing bicycle is wholely set, when a part for vehicle frame is damaged, it is necessary to enter to whole vehicle frame Row is changed and maintenance, and replacement cost is larger, and because the vehicle frame of entirety is bulky, maintenance difficulty is big；

3rd, the vehicle frame each several part parts unloading process after damaging is cumbersome, it is necessary to further simplify dismounting；

4th, the volume after folding is still more huge, is not easy to user and carries and store.

The problem of for existing cycle frame integration：Because existing cycle frame is integrally formed setting, also Or be welded the contact between vehicle frame completely by techniques such as welding, provide vehicle frame enough supports with technique the simplest Intensity, once but some part of vehicle frame is easily caused vehicle frame integrally to be scrapped by physical collision, maintenance cost is high, It is difficult to be repaired vehicle by part replacement.And compared to the widget that can be disassembled, huge vehicle frame is difficult to Dismounting also increases maintenance difficulty for maintenance personal.

The content of the invention

The present invention goal of the invention be in order to solve the problems, such as existing bicycle be difficult to dismounting, there is provided a kind of fast disassembly type is voluntarily Car, cycle frame and its each component can be quickly separated, it can quickly be changed when component damages.

In order to realize foregoing invention purpose, present invention employs following technical scheme：A kind of fast disassembly type bicycle, its feature It is, including：

A, headstock component；Including：Handrail, hollow head rod and drive link, handrail are fixed on drive link one end, and drive link is worn Inside hollow head rod, hollow head rod has first connecting portion；

B, front component；Including：Kinematic link, hollow front-wheel loop bar and front-wheel, front-drive are connected to kinematic link One end, kinematic link are arranged in inside hollow front-wheel loop bar, and kinematic link has second connecting portion；

C, saddle component, including：Seat bar and cushion, cushion are fixed on a bar upper end, and seat bar has the 3rd connecting portion；

D, wheel assembly, including trailing wheel, rear wheel frame and power output system, power output system are arranged in rear wheel frame Portion, rear wheel are connected to the rear end of rear wheel frame, and rear wheel frame has the 4th connecting portion；

E, the centre frame of X-shaped；Include：With first connecting portion connection the first installing port, with second connecting portion connection Second installing port, the 4th installing port connected with the 3rd installing port of the 3rd connecting portion connection with the 4th connecting portion；Described First, second, third and the 4th installing port are dismountable installing port；

Centre frame also includes：With drive link connection the first power transmission shaft, with kinematic link connection second driving shaft and in Heart transmission component, the center driving component include gear or belt pulley, and transmission mechanism is located at the first power transmission shaft and second and passed Moving axis.

Further, the first installing port inwall is provided with catching groove, and the first connecting portion is provided with movable fastening mechanism, The movable fastening mechanism includes abjection button, connecting rod and the fastening block that can coordinate with catching groove, and the fastening block and first connects Socket part is slided or rotation connection, connecting rod connection abjection button and fastening block, the abjection button, connecting rod or any one place of fastening block Provided with the elastic component for fastening block reset；

The connecting rod includes block connecting rod and arm link, and block connecting rod is connected with fastening block, and arm link is connected with abjection button, arm Connecting rod is provided with slide bumping, and block connecting rod is provided with and the chute of slip embedded for slide bumping；

Second installing port, the 3rd installing port and the same second connecting portion of the 4th installing port, the 3rd connecting portion and the 4th connect The connected mode of socket part is identical with the connected mode of the first installing port and first connecting portion.

Further, the center driving component includes center driving axle, headstock bevel gear, front-wheel bevel gear, and first passes Moving gear and the second travelling gear, the center driving axle run through and fix the first travelling gear and the second travelling gear, and first Travelling gear and the second travelling gear synchronous axial system, the first travelling gear are connected with headstock bevel gear, the second travelling gear with Front-wheel bevel gear is connected；Center driving axle both ends are arranged with centre bearing, and 2 centre bearings are individually fixed in first In portion and second.

Further, the centre frame includes：First and second；The first and second rotatable peace in middle part Dress；

First both ends are respectively equipped with the first connecting portion and the 4th detachable installation of connecting portion One installing port and the 4th installing port；

Second is provided with and the second installing port of the second connecting portion and the 3rd detachable installation of connecting portion and the Three installing ports；

Described second includes the second housing, at least two groups of position-limit mechanisms, coordinates company with the kinematic link in front component The second driving shaft and center driving component connect；

Second driving shaft and position-limit mechanism are located in second shell body, and center driving component is installed through first and second The center in portion, the inner drive connection center driving component of second driving shaft, outer end extends second installing port；

The detent mechanism includes fixed positioning matrix, positioning gland, retaining spring and locating dowel on the second housing； Ladder hole is provided with the positioning matrix, ladder hole is by the first hole close to first and the second hole group away from first Into；The locating dowel upper end is provided with positioning head, and positioning head is located in the second hole, in the middle part of locating dowel in the first hole；Positioning pressure Lid is fixed on positioning matrix outer end；Retaining spring is compressed between positioning gland and positioning head, and is contained in the second hole；

Described first is pressed button and spring including the first housing, annular, and the first housing is provided with away from the side of second to be held What annular of receiving pressed button presses button groove, and annular, which is pressed, to be provided with the inside of button through the top pressure post for pressing button groove bottom land, and the spring is positioned at pressing button groove It is interior and be enclosed on top pressure post；

Described first also includes the first power transmission shaft, and the first power transmission shaft is provided with the first square connection towards one end of drive link Portion, the first square connecting portion are engaged with the first square groove；

First housing is provided with positioning through hole close to the side of second；The quantity of positioning through hole and top pressure post is respectively with determining Position post matching, top pressure post the inner corresponds to the positioning through hole respectively；

First with second be in X-shaped when, the positioning through hole is corresponding with the locating dowel respectively；Locating dowel lower end is stretched out In the positioning through hole of second to first.

Further, the second housing close to first is provided with arc-shaped through-hole and fixed arc limit on the second housing Position block, arc-shaped through-hole and the arc-shaped limit block are centered around center driving component outer circumferential side and on same circumference；

X-shaped centre frame also includes rotating and limiting mechanism, and rotating and limiting mechanism includes being fixed on the first housing and stretches into arc The projection of through hole and the contiguous block being connected in second shell body and with projection；Projection rotated against with first and second and Follow arc-shaped through-hole movable；The size of the contiguous block is more than the width of arc-shaped through-hole.

Further, the arc spring hole along its arc length direction is provided with arc-shaped limit block, arc spring is arranged on In arc spring hole, and the arc spring hole, the side of contiguous block and the arc for stretching out the arc-shaped limit block are stretched out in both ends Shape spring one end is corresponding.

Further, the power output system is by flywheel, chain wheel, pedal, chain and the rotating turret group fixed for chain wheel Into；The rotating turret is rotationally connected with the middle part of rear wheel frame；Rotating turret surface is provided with the installing port fixed for pedal, pedal and peace The rotation connection of dress mouth is rotatablely connected by crank.

Further, first inner side outside wall surface and second inner side outside wall surface on be respectively equipped with corresponding annular Ball grooves, the balls of multiple arrangements in a ring are provided between two annular ball grooves.

Further, two the first ball grooves are respectively equipped with side along the second shell body of the arc-shaped through-hole both sides, Contiguous block medial surface is provided with and the second ball grooves at two first ball grooves corresponding two, first ball grooves and second Multiple spacing balls are provided between ball grooves.

Further, the rear wheel frame is provided with the manhole or caulking groove for being embedded and being rotatablely connected for rotating turret, described turn Moving frame hollows out cylinder or solid cylindrical in middle part.

Compared with prior art, the fast disassembly type bicycle of above-mentioned technical proposal is employed, is had the advantages that：

Using the fast disassembly type bicycle of the present invention, because first, second, third and fourth installing port is dismountable peace Mouth is filled, then front component, headstock component, wheel assembly and saddle component corresponding thereto can individually be disassembled, made The vehicle frame of folding bicycle is in split settings.When cycle frame after split settings is impaired, it is only necessary to which impaired component is entered Row separation and replacing, you can folding bicycle is restored to the original state, reduce vehicle frame caused by bicycle is damaged to greatest extent and damage, Whole vehicle frame is avoided to scrap.

When front component is damaged, it is only necessary to which the first installing port and first connecting portion are split, you can by before Wheel assembly and centre frame are separated, and front component is removed, the method for dismounting of headstock component, wheel assembly and saddle component with Front component is identical.

When the random component in centre frame, front component, headstock component, wheel assembly or saddle component is damaged, Single component can quickly be changed, reach the purpose of folding bicycle rapid-maintenance, enable vehicle by changing component Enough recover normal use.

The damage component changed can return factory and be repaired, and in maintenance, the small volume of single component, is easy to repair Personnel are repaired.

Center driving component be used for connect kinematic link and drive link, make headstock rotate when, can by " drive link-in Headstock is rotated and is transferred to front-drive by heart transmission component-kinematic link ", realizes the steering of bicycle.

Power output system is the power source that bicycle advances, and can use manpower as power source, there is provided bicycle advances Power, also can use electric power coordinate motor as power-assisted.

Brief description of the drawings

Fig. 1 is the structural representation of the deployed condition of fast disassembly type bicycle embodiment 1 of the present invention；

Fig. 2 is the structural representation of folded state of the embodiment of the present invention；

Fig. 3 is the exploded perspective view of the embodiment of the present invention；

Fig. 4 is the structural representation of X-shaped centre frame in the embodiment of the present invention；

Fig. 5 is the structural representation of X-shaped centre frame in the embodiment of the present invention；

Fig. 6 is the structural representation of first in the embodiment of the present invention；

Fig. 7 is the structural representation of X-shaped centre frame in the embodiment of the present invention；

Fig. 8 is the structural representation of contiguous block and the second ball grooves in the embodiment of the present invention；

Fig. 9 is the structural representation of contiguous block and the second ball grooves in the embodiment of the present invention；

Figure 10 is the sectional view of detent mechanism in the embodiment of the present invention；

Figure 11 is the structural representation of front component in the embodiment of the present invention；

Figure 12 is the structural representation of headstock component in the embodiment of the present invention；

Figure 13 is the structural representation of steering in the embodiment of the present invention；

Figure 14 is the structural representation straight trip of steering in the embodiment of the present invention；

Figure 15 is that the structural representation of steering in the embodiment of the present invention turns left；

Figure 16 is that the structural representation of steering in the embodiment of the present invention is turned right；

Figure 17 is the explosive view of the wheel assembly in the embodiment of the present invention；

Figure 18 is the structural representation of the wheel assembly in the embodiment of the present invention；

Figure 19 is the exploded perspective view of the embodiment of the present invention；

Figure 20 is the partial enlarged drawing at A in Figure 19；

Figure 21 is the sectional view of quick splicing construction in the embodiment of the present invention；

Figure 22 is the partial enlarged drawing at B in Figure 21；

Figure 23 is the sectional view of quick splicing construction in the embodiment of the present invention.

Reference：1st, front component；10th, kinematic link；101st, the first square groove；11st, hollow front-wheel loop bar； 110、 Second connecting portion；12nd, the first axle assembly；122nd, retainer；123rd, bearing；13rd, front-wheel；

2nd, saddle component；20th, cushion；21st, seat bar；210th, the 3rd connecting portion；

3rd, headstock component；30th, drive link；31st, hollow head rod；310th, first connecting portion；33rd, annular handrail；331st, it is preceding Hold handle；3311st, lock core；3312nd, dead bolt；332nd, side handle；333rd, flat segments；34th, threeway bearing；341st, branch platform；35th, lock Determine sleeve；

4th, wheel assembly；40th, rear wheel frame；400th, the 4th connecting portion；41st, transmission system is ridden；410th, rotating turret；411st, tooth Disk；412nd, flywheel；413rd, chain；4132nd, installing port；414th, pedal；42nd, the second axle assembly；43rd, trailing wheel；

5th, first；50th, annular presses button；501st, top pressure post；5010th, pressure end；502nd, back-moving spring；51st, the first housing； 510th, the first installing port；511st, the 4th installing port；513rd, button groove is pressed；52nd, positioning through hole；53rd, the first power transmission shaft；530th, headstock is bored Gear；55th, projection；56th, ball；57th, annular ball grooves；

6th, second；61st, the second housing；610th, the 3rd installing port；611st, the second installing port；614th, arc-shaped through-hole；6410、 Connecting bridge；615th, ball grooves；62nd, position-limit mechanism；620 glands,；621st, retaining spring；622nd, matrix is positioned；6220th, second Hole；6221st, the first hole；623rd, locating dowel；63rd, center driving component；631st, center driving axle；632nd, the second travelling gear； 633rd, the first travelling gear；64th, arc-shaped limit block；65th, second driving shaft；650th, front-wheel bevel gear；66th, contiguous block；660th, Two ball grooves；

8th, button is deviate from；80th, spring；81st, arm link；812nd, slide bumping；

9th, block is fastened；90th, catching groove；91st, block connecting rod；92nd, chute.

Embodiment

The present invention is described further below in conjunction with the accompanying drawings.

A kind of fast disassembly type bicycle as shown in Fig. 1 to 18, including：Headstock component 3, saddle component 2, front component 1, Wheel assembly 4 and the annexable X-shaped centre frame positioned at middle part.

First, headstock component 3：

Headstock component 3, including hollow head rod 31, drive link 30, threeway bearing 34 and for holding or elbow rests against Annular handrail 33.Wherein：The upper end of drive link 30 is fixed on threeway bearing 34, and the lower end of drive link 30 extends hollow head rod 31 It is interior；The hollow lower end of head rod 31 is provided with first connecting portion 310, and upper end is movably arranged on the drive link 30 close to threeway bearing 34 On.

Specifically the upper end of hollow head rod 31 is to be movably arranged on the drive link 30 close to threeway bearing 34 by bearing On, hollow head rod 31 is fixed on bearing outer ring, therefore during rotation drive link 30, will not twist empty wagons head rod.

Above-mentioned annular handrail 33 is in the round rectangle of closing, and the annular sidepiece of handrail 33 1 is flat segments 333, the flat segments 333 are fixed on the threeway bearing 34, and vertical with hollow head rod 31.

Headstock component 3 is used to control ride direction of the user when riding, for control left-hand rotation when bicycle advances, Straight trip and right-hand rotation.

Drive link 30 is connected with handrail, and user is transferred to front-wheel by rotating by rotary handle by drive link 30 13.Which kind of specifically seen below with structure driven.

Above-mentioned drive link 30 is interspersed in hollow head rod 31, the of first 5 in hollow head rod 31 and X-shaped centre frame The phase of one installing port 510 is fixed, and hollow head rod 31 can be that drive link 30 provides very big protection, prevent drive link 30 from being sent out by external force Raw mechanical damage, simultaneously because hollow head rod 31 is coated on the periphery of drive link 30, effectively avoids drive link 30 by rainwater Erosion, the irradiation of light and the entrance of dust, the service life of drive link 30 can be extended.

Above-mentioned annular handrail 33 is specifically made up of straight 331, two groups of side handles 332 of front end handle and flat segments 333, by Duplex or double ramus volaris profundus are against to the flat segments of handrail when annular handrail 33 is available for bicyclist in fatigue in the round rectangle of closing 333 and the top of front end handle 331.In addition, due also to the closing of annular handrail 33 is set, thus the elbow of bicyclist rests against annular and helped Front end handle 331 can be held during hand 33, certain control is carried out to the direction of headstock, again can be to driving when fatigue is ridden in alleviation Direction carries out control, improves security.

Side handle 332, front end handle 331 and the flat segments 333 of annular handrail 33 are used equally for user to grasp, and form is more Sample, the user of different heights and use habit can be adjusted accordingly according to own situation, the grasping for selecting oneself to like Mode.

Above-mentioned front end handle 331, side handle 332 and the stainless steel for fixed flat segments 333 by section for circle Pipe is made, and stainless steel tube is rounded, improves its structural strength first, is secondly not in when in use without corner angle, bicyclist Sense of discomfort.

Sponge, rubber and other items can be also arranged outside handrail, improves comfort level, the present embodiment is not specifically limited.

Branch platform 341 is additionally provided with threeway bearing 34, branch platform 341 rests against mainly for jockey's palm or duplex, branch platform Face is parallel with the plane of handrail for resting against on 341, is overlapped with the plane of the annular extreme higher position of handrail 33, when palm or elbow rest against When, branch platform 341 can avoid hanging phenomenon, improve comfort level.

Secondly, the gap left between branch platform 341 and front end handle 331 is less than the diameter of the common mineral water bottles of 10mm about 7-9mm, among water bottle being directly placed at into gap, it is easy to the carrying of the column article such as water bottle, umbrella.

Finally, in order to allow inside of the lower end of drive link 30 smoothly with annexable X-shaped centre frame to be connected, so that by power again Transfer out to front-wheel 13, therefore the lower end of drive link 30 of the present invention is with being provided with the first square groove 101.

2nd, front component 1：

Front component 1, including：Hollow front-wheel loop bar 11, kinematic link 10, the first axle assembly 12 and front-wheel 13.

Front component 1 is used to coordinate headstock component 3, and the annular handrail 33 of headstock component 3, which rotates, follows kinematic link 10 It is together rotated, and front component 1 together deflects in the presence of kinematic link 10, realizes the adjustment in direction when riding.

For kinematic link 10 positioned at the hollow inner side of front-wheel loop bar 11, the hollow upper end of front-wheel loop bar 11 is provided with second connecting portion 110, the hollow lower end of front-wheel loop bar 11 is rotatably connected on kinematic link 10.Front-wheel 13 is located at the side of kinematic link 10, transmission Hollow front-wheel loop bar 11 is stretched into the upper end of connecting rod 10, and the lower end of kinematic link 10 connects front-wheel 13 by the first axle assembly 12, and first Axle assembly 12 had both been used to roll installation, realized that front-wheel 13 is located at the rotation connection of the lower end of kinematic link 10 again.

In order to allow inside of the kinematic link 10 smoothly with annexable X-shaped centre frame to be connected, so as to which drive link 30 be operated Steering drive to front-wheel 13, the upper end of kinematic link 10 of the invention is provided with the second square connecting portion.

It is provided with hollow front-wheel loop bar 11 and keeps kinematic link 10 in the retainer 122 of position in hollow front-wheel loop bar 11, Bearing is provided between retainer 122 and hollow front-wheel loop bar 11, bearing is arranged and is fixed on the outer surface of kinematic link 10.

On front-wheel 13：Front-wheel 13 in the present embodiment is solid wheel, and wheel hub is the solid wheel hub of no spoke；

The first axle assembly 12 in front component 1 includes bolt, bearing and nut, and the center of front-wheel 1313 is fixed on bearing On, lower end attaching nut of the bolt through bearing and kinematic link 101.

Nut is used to limit front-wheel 13, front-wheel 13 is contradicted nut, and keep front-wheel 13 to be erected when advancing with bolt Directly.Bolt is used to front-wheel 13 being rotationally connected with kinematic link 10, and bearing reduces the friction between front-wheel 13 and bolt, makes folding Folded bicycle can advance farther.

3rd, saddle component 2：

Saddle component 2, including：Seat bar 21 and cushion 20, the lower end of seat bar 21 are provided with the 3rd connecting portion 210, cushion 20 The present upper end of bar 21 is connected by fastener.

The hollow setting in middle part of seat bar 21, the weight of saddle component 2 is effectively reduced, when reduction folding bicycle is ridden and carried Weight, reduce the pressure that seat bar 21 is born, improve structural strength.

Seat bar 21 top is connected with solid fixed seat, and the clip fixed for cushion 20 is connected with fixed seat.It is fixed The solid setting of seat, the structural strength of fixed seat can be effectively increased, clip can highly be tightened in the presence of screw increases it with consolidating The fixation of reservation, make the connection of fixed seat more solid and reliable.

Cushion 20 has supporting bar, and supporting bar is rotatablely connected by Quick release and clip, and supporting bar is located at Quick Release In the middle part of bar.Supporting bar under cushion 20 makes cushion 20 hanging and certain support is carried out to it, when cushion 20 is pressurized, cushion 20 can occur small size deformation, more comfortable during use.

The effect of Quick release is first：Realize that supporting bar in the rotation connection on clip, is packed up when folding bicycle folds When, can be cocked next upwards by cushion 20, make the volume of folding bicycle smaller, it is easier to carry.And when folding is voluntarily ridden, Cushion 20 can be pulled down, be sat for normal use person.

When the handle of Quick release is in 90 ° or so with the bar cramp angle in the middle part of it, i.e., handle pushes, and Quick release both ends spacing becomes It is small, supporting bar both ends are extruded, are that supporting bar is brought into close contact with clip, frictional resistance is big, and cushion 20 can not rotate. When Quick release is opened, the increase of Quick release both ends spacing, the both ends clamping force of supporting bar is reduced, allows 20 turns of cushion It is dynamic.

4th, wheel assembly 4：

Wheel assembly 4, including trailing wheel 43, the second axle assembly 42, rear wheel frame 40 and power output system, trailing wheel 43 pass through Second axle assembly 42 is connected to the lower end of rear wheel frame 40, and power output system is arranged on the middle part of rear wheel frame 40, power output system Output end drive connection trailing wheel 43, the upper end of rear wheel frame 40 is provided with the 4th connecting portion 400；

The 4th connecting portion 400 on rear wheel frame 40 is fixed with the phase of the 4th installing port 511 of first 5, makes trailing wheel 43 and X-shaped Centre frame is connected.

The function of wheel assembly 4 is to provide the power to advance for bicycle, and power output system can be that battery coordinates Motor, the driving source of bicycle is used as in the form of electric power power-assisted；Bicycle form that can also be common, passes through user Foot pedals 414 realize power output, and the driving source of bicycle is used as using manpower.

Power output system in the present embodiment be manpower as power output, it is by flywheel 412, chain wheel 411, pedal 414th, chain 413 and the rotating turret 410 fixed for chain wheel 411 form；The surface of rotating turret 410 is provided with the peace fixed for pedal 414 Mouth 4132 is filled, pedal 414 is rotatablely connected with installing port 4132 or is rotatablely connected by crank.

In user's pushes pedals 414, rotating turret 410 can be made to follow pedal 414 to rotate, the tooth on rotating turret 410 411 synchronous rotation of disk, chain wheel 411 are together rotated by the flywheel driven 412 of chain 413, and flywheel 412 finally drives trailing wheel 43 Rotate, realize the power output that bicycle advances.

Secondly, power output system is arranged at the inside of rear wheel frame 40, makes chain wheel 411, flywheel 412 and chain 413 or skin Band is in the protection of rear wheel frame 40, rear wheel frame 40 is had comprehensive protection to power output system, reduces sleet sky The influence of gas and sunshine to power output system；Secondly, rear wheel frame 40 can prevent foreign object to the mechanical of power output system Destroy, greatly extend the service life of power output system.

Rear wheel frame 40 is provided with the manhole or caulking groove for being embedded and being rotatablely connected for rotating turret 410, and rotating turret 410 is in middle part Hollow out cylinder.Rotating turret 410 is embedded at the inside of rear wheel frame 40 and is rotatablely connected with rear wheel frame 40, and rear wheel frame 40 is to rotating turret 410 support contact area is larger, and compared to traditional chain wheel 411 by way of middle part axostylus axostyle is connected with vehicle frame, its advantage exists In：The contact area of rear wheel frame 40 and rotating turret 410 is larger, and rotating turret 410 is embedded inside rear wheel frame 40, rotating turret 410 During rotation, rear wheel frame 40 has spacing and supporting role to the periphery of rotating turret 410, passes through center compared to original chain wheel 411 The mode that rotating shaft position is connected with vehicle frame, the present embodiment greatly increase the connective stability of rotating turret 410, prevent rotating turret 410 abjection phenomenons, improve service life.

410 hollow setting of rotating turret, the cylinder hollowed out in middle part.After rotating turret 410 is hollow, under its overall weight Drop 70% or so, it can effectively reduce user and pedal and trample required power, reduction is ridden difficulty.

Installing port 4132 can be located at the side wall of rotating turret 410, may also set up in the inwall of rotating turret 410, as long as can make to step on Plate 414 is fixed on the optional position of rotating turret 410 and makes pedal 414 drive rotating turret 410 to rotate.And in the present embodiment Rotating turret 410 is due to small volume, and the side for being installed on rotating turret 410 easily causes the structural strength deficiency of rotating turret 410, therefore The inwall of rotating turret 410 is positioned in, to provide pedal 414 enough installing spaces.

Installing port 4132 is used for the installation of pedal 414, and pedal 414 can be directly mounted at installing port 4132, can also use Crank is indirectly connected with to pedal 414 and installing port 4132.Pedal 414, which is mounted directly, to be advantageous in that：Pedal 414 takes Space it is smaller, especially when folded state, pedal 414 is directly mounted on the installing port 4132 of rotating turret 410, can So that wheel assembly 4 seems more small and exquisite；Pedal 414 is indirectly connected with being advantageous in that by crank and installing port 4132： Crank can increase torque arm length, and required power is smaller when user tramples, more laborsaving when riding.Pedal in the present embodiment 414 are directly mounted at the installing port 4132 of rotating turret 410, reduce the volume of wheel assembly 4 to greatest extent.Installing port 4132 in The radius of gyration on rotating turret 410 is 0.9 times or so of the radius of chain wheel 411.

5th, annexable X-shaped centre frame：

X-shaped centre frame, includes：

First 5 and second 6；The first 5 and second 6 rotatable installation in middle part；

First 5 both ends is respectively equipped with first with 310 and the 4th connecting portion of first connecting portion, 400 detachable installation The installing port 511 of installing port 510 and the 4th；

It is provided with the second installing port with 110 and the 3rd connecting portion of second connecting portion, 210 detachable installation for second 6 611 and the 3rd installing port 610；

X-shaped centre frame and headstock component 3, saddle component 2, front component 1, the detachable installation of wheel assembly 4, work as car When random component is damaged in head assembly 3, saddle component 2, front component 1 and wheel assembly 4, it can be changed by detachable Component reaches the purpose of rapid-maintenance, and the component damaged can then return factory and be repaired.The worry of vehicle depot repair is avoided, Greatly accelerate repair progress.

Secondly, the component of the folding bicycle in the present embodiment has different decorative patterns and color, and user can be by difference The folding bicycle part of color pattern carries out free matched combined, meets the aesthetic requirement of individual.

Include 61, four groups of position-limit mechanisms 62 of the second housing for second 6, coordinate company with the kinematic link 10 in front component 1 The second driving shaft 65 and center driving component 63 connect.Second driving shaft 65 and position-limit mechanism 62 are located in the second housing 61, Center driving component 63 is installed through the center of first 5 and second 6, and the inner drive connection center of second driving shaft 65 passes Dynamic component 63, outer end extends the second installing port 611.

Second driving shaft 65 is provided with the second square connecting portion, the second square connecting portion and towards one end of kinematic link 10 Two square grooves are engaged；The upper end of kinematic link 10 is provided with second square groove；The projection 55 that second square groove is square, for Two square connecting portions are engaged, and kinematic link 10 and second driving shaft 65 is driven other in which axle together when rotating Rotate.In the present embodiment, the second square connecting portion and second square groove, because its processing is more simple, it can reduce many Process time and difficulty of processing, therefore the present embodiment is using square, according to polygon grooves such as hexagon, pentagon, triangles and The cooperation of block also can reach identical effect.

Detent mechanism includes the positioning matrix 622, positioning gland 620, retaining spring 621 being fixed on the second housing 61 With locating dowel 623；Ladder hole is provided with positioning matrix 622, ladder hole is by the first hole 62211 close to first 5 and far The second hole 6220 from first 5 forms；The upper end of locating dowel 623 is provided with positioning head, and positioning head is located in the second hole 6220, fixed The middle part of position post 623 is in the first hole 62211；Positioning gland 620 is fixed on positioning matrix 622 outer end；Retaining spring 621 is compressed Between positioning gland 620 and positioning head, and it is contained in the second hole 6220.

Detent mechanism is used for the shape for limiting X-shaped centre frame, fixed when X-shaped centre frame is in folding or open mode Position mechanism can limit the relative movement of first 5 and second 6, enable X-shaped centre frame when bicycle is used or folded and packs up A fixed shape is enough kept, portability when keeping the security of driving and folding carrying.

As shown in Figure 4, the positioning matrix 622 in detent mechanism and second 6 are integrally formed setting, position matrix 622 Middle part have a shoulder hole, shoulder hole includes the first hole 6221 and the second hole 6220, and the first hole 6221 is logical close to first 5 Hole, and the aperture in the first hole 6221 is less than the aperture in the second hole 6220, and locating dowel 623, locating dowel 623 are placed with shoulder hole Front end be located in the first hole 6221, the rear end of locating dowel 623 is more than the disk and thin plate in the first hole 6221, locating dowel for diameter Retaining spring 621 is provided with after 623, retaining spring 621 contradicts positioning gland 620, and a downward power is provided for locating dowel 623, Locating dowel 623 is set to be in normal ejection state, pressing pressure locating dowel 623 can make it shrink back upwards into the first hole 6221.

It is in work of the locating dowel 623 by retaining spring 621 under X-shaped and folded state in the expansion of normal operating condition bicycle With in the state of stretching, and locating dowel 623 enters in first 5 positioning through hole 52 corresponding with normal operating condition, makes the One 5 and second 6 can not occur relative rotation, make the two fixation.

Button 50 and spring are pressed including the first housing 51, annular for first 5, the first housing 51 is set away from the side of second 6 There is accommodate that annular presses button 50 to press button groove 513, annular is pressed the inner side of button 50 and is provided with through the top pressure post 501 for pressing the bottom land of button groove 513, Spring, which is located at, to be pressed in button groove 513 and is enclosed on top pressure post 501.

The position of top pressure post 501 and quantity are corresponding with positioning through hole 52, annular press torsion in do not press pressure condition when, it is fixed Position post 623 makes first 5 and second 6 relative rotation can not occur through positioning matrix 622 and positioning through hole 52, when pressing Pressure ring shape presses torsion, and top pressure post 501 is moved outwardly and into positioning through hole 52, and locating dowel 623 is extruded into positioning through hole 52 is allowed to In the first hole of retraction 6221, the rotation that makes locating dowel 623 no longer limit first 5 and second 6, first 5 and second 6 It can rotate again.

Torsion is pressed by pressing pressure ring shape, releases folding bicycle spacing, allows bicycle from the use state of X-shaped to folding Overlapping state changes, and in rotation process, unclamps annular and presses torsion, when locating dowel 623 is directed at positioning through hole 52 again, locating dowel 623 are again sent into locating dowel 623 in positioning through hole 52 in the presence of retaining spring 621, are in folding bicycle and fold State, and first 5 and second 6 it is spacing again can not rotate, keep bicycle be in folded state.When fold from Drive a vehicle the use state of X-shaped from folded state to expansion, be also ibid identical flow.

Spring one end conflict on top pressure post 501 presses the one end of button groove 513 conflict annular and presses button 50, there is provided annular presses button 50 1 The power of individual resilience, the annular in detent mechanism is pressed the 50 normal time of button and be in ejection state.

Also include the first power transmission shaft 53 for first 5, the first power transmission shaft 53 is square provided with first towards one end of drive link 30 Connecting portion, the first square connecting portion are engaged with the first square groove 101；With the cooperation of the second square connecting portion and second square groove Form is identical, and the shape of square connecting portion is square column, inserts in square groove, makes the docking of two axles and synchronous axial system.

Arc-shaped through-hole 614 and the arc being fixed on the second housing 61 limit are provided with close to second housing 61 of first 5 Position block 64, arc-shaped through-hole 614 and arc-shaped limit block 64 are centered around the outer circumferential side of center driving component 63 and on same circumference, arc The arc-shaped through-hole 614 along its arc length direction is provided with shape limited block 64, arc spring is arranged in arc-shaped through-hole 614, and And arc-shaped through-hole 614 is stretched out at both ends.

As shown in Figure 4 and Figure 5, X-shaped centre frame also includes rotating and limiting mechanism 62, and rotating and limiting mechanism 62 includes being fixed on First housing 51 simultaneously stretches into the projection 55 of arc-shaped through-hole 614 and in the second housing 61 and the contiguous block that is connected with projection 55 66；Projection 55 rotates against with first 5 and second 6 and follows the activity of arc-shaped through-hole 614；The size of contiguous block 66 is more than arc The width of shape through hole 614, the side of contiguous block 66 are corresponding with the arc spring one end for stretching out arc-shaped limit block 64.Arc-shaped through-hole 614 and the quantity of arc-shaped limit block 64 be two groups, and two groups of arc-shaped limit blocks 64 respectively positioned at two groups of arc-shaped through-holes 614 it Between, form annular.

The effect of arc-shaped limit block 64 and arc-shaped through-hole 614 is the angle of rotation for the contiguous block 66 that limitation is connected with projection 55 Degree, arc-shaped limit block 64 limit the rotational angle of contiguous block 66, and arc-shaped through-hole 614 limits the rotational angle of projection 55, due to convex Block 55, contiguous block 66 are finally all connected with first 5, thus here by limitation projection 55, contiguous block 66 and arc-shaped limit block 64, Rotational angle between arc-shaped through-hole 614, the rotational angle of limitation first 5 and second 6.Prevent first 5 and second 6 360 ° are relatively rotated, prevents it from rotating excessive, the rotation amplitude of contiguous block 66 is limited in 90 °, as shown in fig. 1, saddle Component 2 only has 90 ° with respect to the rotational angle of headstock component 3.

Also, when folding bicycle is opened, on location base of the detent mechanism to first 5 and second 6, arc Shape limited block 64 can also provide the certain spacing stationkeeping ability of projection 55 simultaneously, additionally it is possible to bear human body weight on saddle component 2 The downward pressure applied, by the cooperation of arc-shaped limit block 64 and projection 55, the pressure of this part human body is effectively born, is prevented The only damage of the locating dowel 623 in detent mechanism, effectively extend the service life of the detent mechanism of middle part X-shaped centre frame.

The both ends of arc-shaped limit block 64 are additionally provided with through hole, and spring is placed with its through hole, when bicycle be in X deployed conditions or During person's folded state, contiguous block 66 contradicts with arc-shaped limit block 64.When bicycle is in deployed condition, once user presses Pressure ring shape presses positioning lift of the button 50 by x shape centre frames, and first 5 and second 6 can be under spring action, rapidly from exhibition Open state is changed to folded state, and vehicle frame moment is shunk, and bicycle is further folded to folded state by user afterwards, is being entered Before entering folded state, contiguous block 66 extrudes the spring on arc-shaped limit block 64 again, and detent mechanism completes positioning, and bicycle enters Folded state.And when bicycle enters deployed condition from folded state, its order is identical with the order folded.

Arcuately it is respectively equipped with two the first ball grooves 615 on the medial surface of the second housing 61 of the both sides of through hole 614, two article One ball grooves 615 are located at the both sides of arc-shaped through-hole 614 respectively, and the medial surface of contiguous block 66 is provided with right with two the first ball grooves 615 Second ball grooves 615 at two answered, multiple spacing balls 56 are provided between the first ball grooves 615 and the second ball grooves 615.

The effect of contiguous block 66 is second 6 fitting tightly by contiguous block 66, arc-shaped through-hole 614 and projection 55 In on first 5, contiguous block 66 and second 6 clamping, therefore frictional force is also larger, and multiple spacing 56, balls herein Between the first ball grooves 615 and the second ball grooves 615, the frictional force of first 5 and second 6 rotation can be greatly reduced, And clamping force therebetween is not reduced, extend service life while security is ensured.

First 5 inner side outside wall surface and second 6 inner side outside wall surface on be respectively equipped with corresponding annular ball grooves 57, the balls 56 of multiple arrangements in a ring are provided between two annular ball grooves 57.

The ball grooves 615 of first 5 and second 6 are used for the placement of ball 56, and ball 56 is placed in ball grooves 615 Afterwards, the friction between first 5 and second 6 can be greatly reduced, when reducing abrasion reduces folding bicycle expansion or fold Friction, be allowed to using more convenient.

Steering on folding bicycle：

Include at its steering core for the center driving component 63 in X-shaped centre frame, center driving component 63 Center driving axle 631, headstock bevel gear 530, front-wheel bevel gear 650, the first travelling gear 633 and the second travelling gear 632, in Heart power transmission shaft 631 runs through and fixes the first travelling gear 633 and the second travelling gear 632, and the first travelling gear 633 and second passes The synchronous axial system of moving gear 632, the first travelling gear 633 are connected with headstock bevel gear 530, the second travelling gear 632 and front-wheel Bevel gear 650 is connected；The both ends of center driving axle 631 are arranged with centre bearing, and 2 centre bearings are individually fixed in first 5 and second 6 in.

As shown in Figure 13 to Figure 16, headstock component 3 is connected with the first power transmission shaft 53, and common rotation, the first power transmission shaft 53 The inner there is headstock bevel gear 530, headstock bevel gear 530 rotates with headstock and drives the first travelling gear 633 to rotate, due to First travelling gear 633 and the second travelling gear 632 are both secured on center driving axle 631 and synchronous axial system, and the second transmission The front-wheel bevel gear 650 of gear 632 and the kinematic link 10 of front component 1 is together driven.Therefore, rotating headstock component 3 can lead to Cross center driving component 63 and deflection is transferred to front-wheel 13, reach the purpose of the steering of front-wheel 13.

In the present embodiment, because headstock component 3 is fixed on first 5 with wheel assembly 4, and 2 same front-wheel of saddle component Component 1 is fixed on second 6, visually give people a kind of headstock with the one of trailing wheel 43, front-wheel 13 with saddle one illusion, Headstock, which rotates, will drive the sense organ illusion that rotates of trailing wheel 43, increase the curious degree of consumer, make folding in the present embodiment from Driving seems more mysterious.The deflection of headstock component 3 is cleverly finally transferred to by front-wheel 13 by center driving component 63, made Headstock component 3, which rotates, drives front-wheel 13 to rotate, and folding bicycle is seemed more high-end, flexible.

In front component 1, front-wheel 13 is located at kinematic link 10 close to the side of first 5, when cycling straight trip, front-wheel 13 are located on same rotational plane with trailing wheel 43, and when X-shaped centre frame folds, annular 33 rotatable 180 degree of handrail, before making Wheel 13 is on the parallel surface of trailing wheel 43, and the trailing wheel 43 of front-wheel 13 can be at parallel state, as shown in Figure 2.

Company on folding bicycle headstock component 3, saddle component 2, front component 1, wheel assembly 4 and X-shaped centre frame Connect mode：

First~the 4th connecting portion 400 respectively correspond to the first~the 4th installing port 511, the stepped running-on of connecting portion, The section of connecting portion is in that round edge rectangle, corresponding connecting portion seat bar 21, hollow head rod 31 etc. is placed equidistant.Rectangle Housing it is relative manufacture more simple, while there is higher structural strength, be not easy compressive deformation, and circular rounding side makes company The surfaces such as socket part seat bar 21, hollow head rod 31 are more smooth, prevent the scratches such as scratch from leaving.

Headstock component 3, saddle component 2, front component 1, wheel assembly 4 and the X-shaped centre frame connection side of folding bicycle Formula uses a kind of quick splicing construction, rather than using fasteners such as screws bolts.

The inwall of first installing port 510 is provided with catching groove 90, and the first connecting portion 310 is provided with movable fastening mechanism, The movable fastening mechanism includes abjection button 8, connecting rod and the fastening block 9 that can coordinate with catching groove 90, the fastening block 9 and the One connecting portion 310 is slided or is rotatablely connected, connecting rod connection abjection button 8 and fastening block 9, abjection button 8, connecting rod or the fastening 9 any one place of block is provided with the elastic component resetted for fastening block 9.

The connecting rod includes block connecting rod 91 and arm link 81, and block connecting rod 91 is connected with fastening block 9, and arm link 81 is pressed with abjection Button 8 is connected, and arm link 81 is provided with slide bumping 812, and block connecting rod 91 is provided with the chute for being embedded in and sliding for slide bumping 812 92。

Second installing port 611, the 3rd installing port 610 and the 4th installing port 511 connect with second connecting portion the 110, the 3rd The connected mode of the connecting portion 400 of socket part 210 and the 4th is identical with the connected mode of the first installing port 510 and first connecting portion 310.

Using the quick splicing construction of the folding bicycle in this present embodiment, the installing port of first connecting portion 310 and first 510 are socketed, and the catching groove 90 on the first installing port 510 is used to be connected with the movable fastening mechanism in first connecting portion 310, when When fastening block 9 on movable fastening mechanism fastens with catching groove 90, first connecting portion 310 is mutually fixed with the first installing port 510.

Abjection button 8 and connecting rod on movable fastening mechanism are for controlling the flexible of fastening block 9, going out button when pressing pressure-off When 8, connecting rod drives fastening block 9 to deviate from catching groove 90, and the connection disconnected between the installing port 510 of first connecting portion 310 and first is closed System, allows two connecting portions that relative movement occurs, realizes the fast quick-detach between connecting portion.

Deviate from button 8, connecting rod or 9 any one place of fastening block and be provided with the spring resetted for fastening block 9, due to deviating from button 8 Connected with fastening block 9 by connecting rod, therefore any one place sets the spring resetted at three, can reset fastening block 9. The connecting rod of spring one end contiguous block 66 in the present embodiment, the spring other end connect the inwall of first connecting portion 310.To fasten block 9 The power resetted is provided, is at often doing well, when the installing port 510 of first connecting portion 310 and first docks, fastening block 9 exists Can be automatically into locking, the installing port 510 of first connecting portion 310 and first in catching groove 90 in the presence of spring.

Movable fastening mechanism makes the dismounting more simple and fast of two connecting portions, time saving and energy saving.User can be by pressing Pressure-off goes out button 8, and the installing port 510 of first connecting portion 310 and first is separated, by the part quick-replaceable of damage.

Folding bicycle in the present invention will release more money different colours decorative pattern styles, and user can be by different colours decorative pattern Folding bicycle part carry out free matched combined, meet the aesthetic requirement of individual.

Connecting rod includes block connecting rod 91 and arm link 81, and block connecting rod 91 is fastening block 9 extension, with the one of fastening block 9 into Type is set, and arm link 81 is connected with abjection button 8, and arm link 81 is provided with slide bumping 812, and block connecting rod 91 is provided with for sliding The chute 92 that projection 812 is embedded in and slided.

As shown in Figure 21, realize to link between block connecting rod 91 and arm link 81 by slide bumping 812 and chute 92 and close System, realize abjection button 8 with fastening the linkage of block 9.When pressing pressure-off and going out button 8, arm link 81 drive slide bumping 812 to Medial movement, because slide bumping 812 is in chute 92, therefore block connecting rod 91 follows it to move inward, and forces fastening block 9 Rotate, fastening block 9 is shunk and deviate from catching groove 90, contacts the lock between the installing port 510 of first connecting portion 310 and first Determine relation, the two is moved, reach the purpose of dismounting.

As shown in Figure 23 and Figure 21, fastening block 9 is triangular in shape, and fastening block 9 includes buckling surface, and buckling surface is fastening block 9 court To the clinoplain of first connecting portion 310, the angle of buckling surface and perpendicular is that angle [alpha] is when fastening block 9 is embedded in catching groove 90 70-85°.Angle [alpha] closer to 90 °, then fasten block 9 block both when being fastened with catching groove 90 it is tighter, but in actual production due to The fastening block 9 of rotation connection needs certain radian for rotating, therefore sets α angles to make 9 turns of fastening block between 70-85 ° herein It is dynamic it is without hindrance in the case of and can its certain fastening power is provided, when ensureing that the installing port 510 of first connecting portion 310 and first fastens Do not deviate from.

Fastening block 9 also includes press-in face, and fastening block 9 is pressed into face and the angle of perpendicular when being embedded in catching groove 90 be angle beta Less than 15 °.Angle β is smaller, then first connecting portion 310 is put into during the first installing port 510 that the extruding force to be overcome is smaller, more holds Easily enter.Angle beta in the present embodiment uses 10 °, and extruding force is moderate, and socket is easy.

It is described above to make the preferred embodiment of the present invention, this hair is not departed from for the person of ordinary skill of the art On the premise of bright principle, some variations and modifications can also be made, these also should be regarded as protection scope of the present invention.

Claims (8)

1. A kind of 1. fast disassembly type bicycle, it is characterised in that including：

   A, headstock component (3)；Including：Handrail (33), hollow head rod (31) and drive link (30), handrail (33) are fixed on transmission Bar (30) one end, drive link (30) are arranged in hollow head rod (31) inside, and hollow head rod (31) has first connecting portion (310)；

   B, front component (1)；Including：Kinematic link (10), hollow front-wheel loop bar (11) and front-wheel (13), front-wheel (13), which rotates, to be connected One end of kinematic link (10) is connected to, kinematic link (10) is arranged in hollow front-wheel loop bar (11) inside, kinematic link (10) tool There is second connecting portion (110)；

   C, saddle component (2), including：Seat bar (21) and cushion (20), cushion (20) are fixed on a bar (21) upper end, seat bar (21) With the 3rd connecting portion (210)；

   D, wheel assembly (4), including trailing wheel (43), rear wheel frame (40) and power output system (41), power output system (41) In the middle part of rear wheel frame (40), trailing wheel (43) is rotationally connected with the rear end of rear wheel frame (40), and rear wheel frame (40) has the 4th to connect Socket part (400)；

   E, the centre frame of X-shaped；Include：The first installing port (510) of same first connecting portion (310) connection, same to second connecting portion (110) the second installing port (611) of connection, the 3rd installing port (610) and the same 4th connected with the 3rd connecting portion (210) connect 4th installing port (511) of portion (400) connection；The first, second, third and fourth installing port is dismountable installation Mouthful；

   Centre frame also includes：The first power transmission shaft (53) of same drive link (30) connection, the second of same to kinematic link (10) connection pass Moving axis (65) and center driving component (63), the center driving component (63) include gear or belt pulley, transmission mechanism position In the first power transmission shaft (53) and second driving shaft (65)；First installing port (510) inwall is provided with catching groove (90), and described first Connecting portion (310) is provided with movable fastening mechanism, and the movable fastening mechanism includes abjection button (8), connecting rod and same can buckled The fastening block (9) that groove (90) coordinates, the fastening block (9) are slided or are rotatablely connected with first connecting portion (310), and connecting rod connection is de- Go out button (8) and fastening block (9), the abjection button (8), connecting rod or fastening block (9) any one place are provided with multiple for fastening block (9) The elastic component of position；

   The connecting rod includes block connecting rod (91) and arm link (81), and block connecting rod (91) is connected with fastening block (9), arm link (81) and Deviate from button (8) to be connected, arm link (81) is provided with slide bumping (812), and block connecting rod (91) is provided with and supplies slide bumping (812) The chute (92) for being embedded in and sliding；

   Second installing port (611), the 3rd installing port (610) and the 4th installing port (511) same to second connecting portion (110), The connected mode of three connecting portions (210) and the 4th connecting portion (400) and the first installing port (611) and first connecting portion (310) Connected mode is identical；The center driving component (63) includes center driving axle (631), headstock bevel gear (530), front-wheel cone Gear (650), the first travelling gear (633) and the second travelling gear (632), the center driving axle (631) are run through and fixed First travelling gear (633) and the second travelling gear (632), the first travelling gear (633) and the second travelling gear (632) are synchronous Rotate, the first travelling gear (633) is connected with headstock bevel gear (530), the second travelling gear (632) and front-wheel bevel gear (650) it is connected；Center driving axle (631) both ends are arranged with centre bearing (630), and 2 centre bearings (630) are respectively It is fixed in first (5) and second (6).
2. 2. fast disassembly type bicycle according to claim 1, it is characterised in that：The centre frame includes：First (5) and Second (6)；Rotatable installation in the middle part of first (5) middle part and second (6)；

   Described first (5) both ends are respectively equipped with detachable with the first connecting portion (310) and the 4th connecting portion (400) The first installing port (510) and the 4th installing port (511) of installation；

   Second (6) are provided with the second peace with the second connecting portion (110) and the 3rd connecting portion (210) detachable installation Fill mouth (611) and the 3rd installing port (610)；

   Described second (6) include the kinematic link in the second housing (61), at least two groups of position-limit mechanisms (62) and front component (10) second driving shaft (65) and center driving component (63) being connected；

   Second driving shaft (65) and position-limit mechanism (62) are located in the second housing (61), and center driving component (63) is installed through First (5) and the center of second (6), the inner drive connection center driving component (63) of second driving shaft (65), outer end is stretched To second installing port (611)；

   Detent mechanism (62) includes the positioning matrix (622), positioning gland (620), positioning bullet being fixed on the second housing (61) Spring (621) and locating dowel (623)；Ladder hole is provided with the positioning matrix (622), ladder hole is by close to first (5) The first hole (6221) and away from first (5) the second hole (6220) form；Locating dowel (623) upper end is provided with positioning Head, positioning head are located in the second hole (6220), in the middle part of locating dowel (623) in the first hole (6221)；Positioning gland (620) is solid It is scheduled on positioning matrix (622) outer end；Retaining spring (621) is compressed in positioning gland (620) between positioning head, and is contained in In two holes (6220)；

   Described first (5) include the first housing (51), annular and press button (50) and spring (502), the first housing (51) remote the The side of two (6) be provided with accommodate that annular presses button (50) press button groove (513), annular, which is pressed, to be provided with the inside of button (50) through pressing button groove (513) the top pressure post (501) of bottom land, the spring (502), which is located at, to be pressed in button groove (513) and is enclosed on top pressure post (501)；

   First housing (51) is provided with positioning through hole (52) close to the side of second (6)；Positioning through hole (52) and top pressure post (501) quantity matches with locating dowel (623) respectively, and top pressure post (501) the inner corresponds to the positioning through hole (52) respectively；

   When first (5) and second (6) are in X-shaped, the positioning through hole (52) is corresponding with the locating dowel (623) respectively；It is fixed Position post (623) lower end is stretched out in the positioning through hole (52) of second (6) to first (5).
3. 3. fast disassembly type bicycle according to claim 2, it is characterised in that：The second housing (61) close to first (5) Be provided with arc-shaped through-hole (614) and the arc-shaped limit block (64) that is fixed on the second housing (61), the arc-shaped through-hole (614) and Arc-shaped limit block (64) is centered around center driving component (63) outer circumferential side and on same circumference；

   X-shaped centre frame also includes rotating and limiting mechanism, and rotating and limiting mechanism includes being fixed on the first housing (51) and stretching into arc The projection (55) of through hole (614) and contiguous block (66) that is interior positioned at the second housing (61) and being connected with projection (55)；Projection (55) Rotated against with first (5) and second (6) and follow arc-shaped through-hole (614) movable；The size of the contiguous block (66) is big Width in arc-shaped through-hole (614).
4. 4. fast disassembly type bicycle according to claim 3, it is characterised in that：It is provided with arc-shaped limit block (64) along its arc The arc spring hole (641) of length direction, arc spring are arranged in arc spring hole (641), and the arc is stretched out at both ends Shape spring eye (641), the side of contiguous block (66) are corresponding with the arc spring one end for stretching out the arc-shaped limit block (64).
5. 5. fast disassembly type bicycle according to claim 1 or 2, it is characterised in that：The power output system (41) is by flying Take turns (412), chain wheel (411), pedal (414), chain (413) and formed for the fixed rotating turret (410) of chain wheel (411)；

   The rotating turret (410) is rotationally connected with the middle part of rear wheel frame (40)；

   Rotating turret (410) surface is provided with for the fixed installing port (4132) of pedal (414), pedal (414) and installing port (4132) Rotation connection.
6. 6. fast disassembly type bicycle according to claim 4, it is characterised in that：Outside wall surface and second on the inside of first (5) Corresponding annular ball grooves (57) are respectively equipped with outside wall surface on the inside of portion (6), are provided between two annular ball grooves (57) The ball (56) of multiple arrangements in a ring.
7. 7. fast disassembly type bicycle according to claim 6, it is characterised in that：Along the of the arc-shaped through-hole (614) both sides First ball grooves (615) is respectively equipped with two housings (61) medial surface, contiguous block (66) medial surface is provided with and described two Second ball grooves (660) at two corresponding to first ball grooves (615), between first ball grooves and the second ball grooves (660) Provided with multiple spacing balls (67).
8. 8. fast disassembly type bicycle according to claim 7, it is characterised in that：The rear wheel frame (40) is provided with and supplies rotating turret (410) manhole or caulking groove for being embedded and being rotatablely connected, the rotating turret (410) hollow out cylinder or solid cylinder in middle part Shape.