CN204915990U - Quick detach formula bicycle - Google Patents

Abstract

The utility model discloses an it is rotatable folding that quick detach formula bicycle, its frame are the X -shaped, and each subassembly of bicycle is with the equal adoption activity straining mechanism of the connected mode of frame, and activity straining mechanism makes each subassembly more simple swiftly with the dismouting of frame, labour saving and time saving. The user can carry out the part that damages the quick replacement maintenance, does to carry out the folding bicycle part of different colour / decorative patterns free match combining, satisfied individual's aesthetic requirement.

Description

A kind of fast disassembly type bicycle

Technical field

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

Background technology

Bicycle, also known as bicycle or bicycle, the normally two small-sized land-going machines of taking turns.After people rides car, being power with foot pedal, is the vehicle of environmental protection.English bicycle.Wherein bi means two, and cycle means wheel, i.e. two-wheel car.In inland of China, TaiWan, China, Singapore, be usually called " bicycle " or " bicycle ".Bicycle kind is a lot, has single bicycle, and tandem bicycle also has many person bicycles.

Bicycle is used for riding instead of walk, going on a journey as the vehicle of environmental protection; Bicycle is gone on a tour as body-building apparatus be used for riding exercise, bicycle by increasing people; Bicycle itself is also a sports campaign, has road race, Mountain bike, 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 to form.By vehicle frame folding, by front and back two-wheeled doubling together, can reduce by the length of about 45%.Car load can put into boarding case and folding bag after folding, and the boot of automobile.Do not need by external tools in folding process yet, can manually by car folding and expanding.After folding by seat bar as the strong point with make folding after can stand surely.Folding bicycle carries, easy to use comfortable, mature production technology.

But the folding process of this folding bicycle is comparatively loaded down with trivial details, needs to take off some and control the folding latch of bicycle, and some screws tightened, spend the time costing user a large amount of to fold.

Vehicle body after simultaneously folding still occupies larger space, and its folding after profile comparatively strange, be difficult to the aesthetic conceptions meeting modern.

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

One, existing bicycle folding mechanism is complicated, loaded down with trivial details, and deployment lifting process consumes the plenty of time;

Two, the vehicle frame of existing bicycle is wholely set, and when a part for vehicle frame is damaged, needs to change whole vehicle frame and keep in repair, and replacement cost is comparatively large, and due to the vehicle frame of entirety bulky, maintenance difficulty is large;

Three, the vehicle frame each several part parts unloading process after damaging is loaded down with trivial details, needs further to simplify dismounting;

Four, the volume after folding is still comparatively huge, is not easy to user and carries and store.

Problem for existing cycle frame integration: due to the one-body molded setting of existing cycle frame, also or by techniques such as welding the contact between vehicle frame is welded completely, with the support strength that the simplest technique provides vehicle frame enough, but once certain parts of vehicle frame are subject to physical collision, vehicle frame entirety is very easily caused to be scrapped, maintenance cost is high, is difficult to make car load repaired by part replacement.And compare the widget that can disassemble, huge vehicle frame is difficult to dismounting and too increases maintenance difficulty concerning maintainer.

Summary of the invention

Goal of the invention of the present invention is the problem being difficult to dismantle to solve existing bicycle, provides a kind of fast disassembly type bicycle, can be separated cycle frame and its each assembly by fast speed, can carry out fast speed replacing when assembly damages to it.

In order to realize foregoing invention object, present invention employs following technical scheme: a kind of fast disassembly type bicycle, is characterized in that, comprising:

A, headstock assembly; Comprise: handrail, hollow car head rod and drive link, handrail is fixed on drive link one end, and it is inner that drive link is arranged in hollow car head rod, and hollow car head rod has the first connecting portion;

B, front component; Comprise: kinematic link, hollow front-wheel loop bar and front-wheel, front-drive is connected to one end of kinematic link, and it is inner that kinematic link is arranged in hollow front-wheel loop bar, and kinematic link has the second connecting portion;

C, saddle assembly, comprising: seat bar and cushion, and cushion is fixed on a bar upper end, and seat bar has the 3rd connecting portion;

D, wheel assembly, comprise trailing wheel, rear wheel frame and power output system, and power output system is arranged in the middle part of rear wheel frame, and rear wheel is connected to the rear end of rear wheel frame, and rear wheel frame has the 4th connecting portion;

The center am rest of E, X-shaped; Include: the 4th installing port that the 3rd installing port that the second installing port that the first installing port connected with the first connecting portion, same second connecting portion connect, same 3rd connecting portion connect is connected with the 4th connecting portion; Described first, second, third and fourth installing port is detouchable installing port;

Center am rest also comprises: the first transmission shaft with drive link connection, the second driving shaft with kinematic link connection and center driving assembly, described center driving assembly includes gear or belt pulley, and transmission device is positioned at the first transmission shaft and second driving shaft.

Further, described first installing port inwall is provided with catching groove, described first connecting portion is provided with movable fastening mechanism, the fastening block that described movable fastening mechanism comprises deviating from button, connecting rod and can coordinate with catching groove, described fastening block and the first connecting portion slide or are rotationally connected, connecting rod connects to deviate from button and fastening block, described in deviate from any place of button, connecting rod or fastening block and be provided with elastic component for fastening block reset;

Described connecting rod comprises block connecting rod and arm connecting rod, and block connecting rod is connected with fastening block, arm connecting rod with deviate from button and be connected, arm connecting rod is provided with slide bumping, and block connecting rod is provided with and embeds and the chute slided for slide bumping;

Described second installing port, the 3rd installing port are identical with the connection mode of the first connecting portion with the first installing port with the connection mode of the 4th connecting portion with the second connecting portion, the 3rd connecting portion with the 4th installing port.

Further, described center driving assembly comprises center driving axle, headstock finishing bevel gear cuter, front-wheel finishing bevel gear cuter, first transmission gear and the second transmission gear, described center driving axle runs through and fixes the first transmission gear and the second transmission gear, first transmission gear and the second transmission gear synchronous axial system, first transmission gear is connected with headstock finishing bevel gear cuter, and the second transmission gear is connected with front-wheel finishing bevel gear cuter; Center driving axle two ends are all arranged with center bearing pilot bearing, and described 2 center bearing pilot bearings are individually fixed in first and second.

Further, described center am rest includes: first and second; First and second rotatable installation in middle part;

Described first two ends are respectively equipped with and the first installing port of described first connecting portion and the detachable installation of the 4th connecting portion and the 4th installing port;

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

Described second comprise the second housing, at least two group stop gears, with the second driving shaft that is connected of kinematic link in front component and center driving assembly;

Second driving shaft and stop gear are positioned at the second housing, and center driving assembly runs through the center being arranged on first and second, and second driving shaft the inner is in transmission connection center driving assembly, and outer end extends described second installing port;

Described detent mechanism comprises fixing location matrix, positioning gland, retainer spring and registration mast on the second housing; Be provided with ladder hole in the matrix of described location, ladder hole by near first the first hole and form away from second hole of first; Described registration mast upper end is provided with positioning head, and positioning head is positioned at the second hole, is positioned at the first hole in the middle part of registration mast; Positioning gland is fixed on matrix outer end, location; Retainer spring is compressed between positioning gland and positioning head, and is contained in the second hole;

It is described that first comprises the first housing, annular presses button and spring, first housing away from the side of second be provided with hold that annular presses button press button groove, annular presses the top compression leg being provided with inside button and running through and press button groove bottom land, and described spring is positioned to be pressed button groove and is enclosed within the compression leg of top;

Described first also comprises the first transmission shaft, and the first transmission shaft is provided with the first square connecting portion towards one end of drive link, and described first square connecting portion matches with the first square groove;

First housing is provided with positioning through hole near the side of second; The quantity of positioning through hole and top compression leg is mated with registration mast respectively, compression leg the inner, top corresponding described positioning through hole respectively;

First with second in X-shaped time, described positioning through hole is corresponding with described registration mast respectively; Registration mast lower end is stretched out in the positioning through hole of second to first.

Further, be provided with arc-shaped through-hole and fixing arc-shaped limit block on the second housing near second housing of first, described arc-shaped through-hole and arc-shaped limit block are centered around center driving assembly outer circumferential side and are positioned at circumferentially same;

X-shaped center am rest also comprises rotating and limiting mechanism, rotating and limiting mechanism comprise be fixed on the first housing and the projection stretching into arc-shaped through-hole be positioned at the second housing and the contiguous block be connected with projection; Projection follows arc-shaped through-hole activity with first rotation relative to second; The size of described contiguous block is greater than the width of arc-shaped through-hole.

Further, the arc spring hole along its arc length direction is provided with in arc-shaped limit block, arc spring is arranged in arc spring hole, and described arc spring hole is stretched out at two ends, and the side of contiguous block is corresponding with the arc spring one end of stretching out described arc-shaped limit block.

Further, described power output system is made up of the turret that flywheel, chain wheel, pedal, chain and confession chain wheel are fixing; Described turret is rotationally connected with the middle part of rear wheel frame; Turret surface is provided with for the fixing installing port of pedal, and pedal is rotationally connected with installing port or is connected by crank.

Further, the outside wall surface of the outside wall surface of first inner side and second inner side is respectively equipped with corresponding annular ball grooves, between two annular ball grooves, is provided with the ringwise ball of multiple arrangement.

Further, two the first ball grooves are respectively equipped with along on the second case inside face of described arc-shaped through-hole both sides, contiguous block medial surface is provided with two place second ball grooves corresponding with described two the first ball grooves, is provided with multiple spacing ball between described first ball grooves and the second ball grooves.

Further, described rear wheel frame is provided with and is embedded and the manhole be rotationally connected or caulking groove for turret, and described turret is that middle part hollows out cylindrical or solid cylindrical.

Compared with prior art, have employed the fast disassembly type bicycle of technique scheme, there is following beneficial effect:

Adopt fast disassembly type bicycle of the present invention, because first, second, third and fourth installing port is detouchable installing port, what then front component, headstock assembly, wheel assembly and saddle assembly corresponding thereto all can be independent disassembles, and makes the vehicle frame of folding bicycle be that split is arranged.When cycle frame after split is arranged is impaired, only needs to be separated impaired assembly and to change, folding bicycle can be made to restore to the original state, reduce that bicycle is impaired to greatest extent and the vehicle frame that causes damages, avoid whole vehicle frame to scrap.

When front component is damaged, the first installing port and the first connecting portion is only needed to split, front component can be separated with center am rest, be taken off by front component, headstock assembly, wheel assembly are identical with front component with the method for dismounting of saddle assembly.

When the random component in center am rest, front component, headstock assembly, wheel assembly or saddle assembly is damaged, fast speed replacing can be carried out to single component, reaching the object of folding bicycle rapid-maintenance, enabling car load recover normal use by changing assembly.

The damage assembly changed can return factory and keep in repair, and when keeping in repair, the small volume of single component, is convenient to maintainer and repairs.

Center driving assembly is used for connection for transmission connecting rod and drive link, makes headstock when rotating, and by " drive link-center driving assembly-kinematic link ", headstock rotation is passed to front-drive, realizes turning to of bicycle.

Power output system is the propulsion source that bicycle advances, and manpower can be adopted as propulsion source, provide the power that bicycle advances, and electric power also can be adopted to coordinate motor as power-assisted.

Accompanying drawing explanation

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

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

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

Fig. 4 is the structural representation of X-shaped center am rest in the embodiment of the present invention;

Fig. 5 is the structural representation of X-shaped center am rest in the embodiment of the present invention;

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

Fig. 7 is the structural representation of X-shaped center am rest 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 cutaway 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 assembly in the embodiment of the present invention;

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

Figure 14 is that the structural representation of steering swivel system in the embodiment of the present invention is kept straight on;

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

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

Figure 17 is the exploded 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 place in Figure 19;

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

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

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

Reference numeral: 1, front component; 10, kinematic link; 101, the first square groove; 11, hollow front-wheel loop bar; 110, the second connecting portion; 12, first round Shaft assembly; 122, retainer; 123, bearing; 13, front-wheel;

2, saddle assembly; 20, cushion; 21, seat bar; 210, the 3rd connecting portion;

3, headstock assembly; 30, drive link; 31, hollow car head rod; 310, the first connecting portion; 33, annular handrail; 331, front end handle; 3311, lock core; 3312, dead bolt; 332, side handle; 333, flat segments; 34, threeway bearing; 341, prop up by platform; 35, locking bushing;

4, wheel assembly; 40, rear wheel frame; 400, the 4th connecting portion; 41, foot-operated driving system; 410, turret; 411, chain wheel; 412, flywheel; 413, chain; 4132, installing port; 414, pedal; 42, the second axle assembly; 43, trailing wheel;

5, first; 50, annular presses button; 501, compression leg is pushed up; 5010, pressure head is pushed up; 502, retracing spring; 51, the first housing; 510, the first installing port; 511, the 4th installing port; 513, button groove is pressed; 52, positioning through hole; 53, the first transmission shaft; 530, headstock finishing bevel gear cuter; 55, projection; 56, ball; 57, annular ball grooves;

6, second; 61, the second housing; 610, the 3rd installing port; 611, the second installing port; 614, arc-shaped through-hole; 6410, connecting bridge; 615, ball grooves; 62, stop gear; 620 glands; 621, retainer spring; 622, matrix is located; 6220, the second hole; 6221, the first hole; 623, registration mast; 63, center driving assembly; 631, center driving axle; 632, the second transmission gear; 633, the first transmission gear; 64, arc-shaped limit block; 65, second driving shaft; 650, front-wheel finishing bevel gear cuter; 66, contiguous block; 660, the second ball grooves;

8, button is deviate from; 80, spring; 81, arm connecting rod; 812, slide bumping;

9, fastening block; 90, catching groove; 91, block connecting rod; 92, chute.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention is described further.

A kind of fast disassembly type bicycle as shown in Fig. 1 to 18, comprising: headstock assembly 3, saddle assembly 2, front component 1, wheel assembly 4 and be positioned at middle part annexable X-shaped center am rest.

One, headstock assembly 3:

Headstock assembly 3, comprises hollow car head rod 31, drive link 30, threeway bearing 34 and for hold or elbow props up the annular handrail 33 leaned on.Wherein: drive link 30 upper end is fixed on threeway bearing 34, drive link 30 lower end extends in hollow car head rod 31; Hollow car head rod 31 lower end is provided with the first connecting portion 310, and movable upper end is arranged on the drive link 30 of threeway bearing 34.

The upper end of hollow car head rod 31 is movably arranged on the drive link 30 of threeway bearing 34 by bearing particularly, and hollow car head rod 31 is fixed on outside race, when therefore rotating drive link 30, can not twist empty wagons head rod.

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

Headstock assembly 3 for controlling the ride direction of user when riding, for controlling left-hand rotation when bicycle advances, craspedodrome and right-hand rotation.

Drive link 30 is connected with handrail, and user, by rotary handle, will rotate through drive link 30 and be passed to front-wheel 13.Which kind of specifically with structure driven see below.

Above-mentioned drive link 30 is interspersed in hollow car head rod 31; in hollow car head rod 31 and X-shaped center am rest, first installing port 510 of first 5 fixes; hollow car head rod 31 can be the protection that drive link 30 provides very large; prevent drive link 30 from damaging by external force generation mechanicalness; simultaneously because hollow car head rod 31 is coated on drive link 30 periphery; effectively avoid drive link 30 to be subject to rain erosion, the irradiation of light and entering of dust, the service life of drive link 30 can be extended.

Above-mentioned annular handrail 33 is specifically made up of straight front end handle 331, two groups of side handles 332 and flat segments 333, above the flat segments 333 that duplex or two ramus volaris profundus can be against handrail for bicyclist when fatigue in the round rectangle closed due to annular handrail 33 and front end handle 331.In addition, also close due to annular handrail 33 and arrange, thus the elbow of bicyclist props up by holding front end handle 331 during annular handrail 33, carries out certain control to the direction of headstock, can carry out handle control again, improve safety when fatigue is ridden in alleviation to direction of traffic.

The annular side handle 332 of handrail 33, front end handle 331 and flat segments 333 all can be used for user and grasp, and various informative, the user of different height and use habit can regulate accordingly according to own situation, selects the grip that oneself is liked.

Above-mentioned front end handle 331, side handle 332 and the flat segments 333 for fixing are made by the stainless steel tube that cross section is circle, and stainless steel tube is rounded, first improves its structural strength, and secondly without corner angle, bicyclist can not exist sense of discomfort in use.

Handrail outward also can the article such as sheathed sponge, rubber, and improve comfort level, the present embodiment is not specifically limited.

Threeway bearing 34 is also provided with and props up by platform 341, prop up and lean on main the propping up for jockey's palm or duplex of platform 341 to lean on, prop up by the plane parallel of propping up by face and handrail on platform 341, with the planes overlapping of annular handrail 33 extreme higher position, when palm or elbow prop up by time, prop up and can avoid unsettled phenomenon by platform 341, improve comfort level.

Secondly, a diameter leaning on the gap left between platform 341 and front end handle 331 to be less than the common mineral water bottle of 10mm is about 7-9mm, water bottle directly can be placed among gap, be convenient to carrying of the column such as water bottle, umbrella article.

Finally, in order to allow drive link 30 lower end be connected with the inside of annexable X-shaped center am rest smoothly, thus power turned again export front-wheel 13 to, therefore drive link 30 lower end of the present invention be provided with the first square groove 101.

Two, front component 1:

Front component 1, comprising: hollow front-wheel loop bar 11, kinematic link 10, first round Shaft assembly 12 and front-wheel 13.

Front component 1 is for coordinating headstock assembly 3, and the annular handrail 33 of headstock assembly 3 rotates and makes kinematic link 10 follow it together to rotate, and front component 1 together deflects under the effect of kinematic link 10, the adjustment in direction when realizing riding.

Kinematic link 10 is positioned at inside hollow front-wheel loop bar 11, and hollow front-wheel loop bar 11 upper end is provided with the second connecting portion 110, and hollow front-wheel loop bar 11 lower end is rotatably connected on kinematic link 10.Front-wheel 13 is positioned at kinematic link 10 side, hollow front-wheel loop bar 11 is stretched in kinematic link 10 upper end, kinematic link 10 lower end connects front-wheel 13 by first round Shaft assembly 12, and first round Shaft assembly 12, both for installation of rolling, realizes again front-wheel 13 and is positioned at being rotationally connected of kinematic link 10 lower end.

In order to allow kinematic link 10 be connected with the inside of annexable X-shaped center am rest smoothly, thus turning to of being operated by drive link 30 drives to front-wheel 13, and kinematic link 10 upper end of the present invention is provided with the second square connecting portion.

Be provided with in hollow front-wheel loop bar 11 and keep the retainer 122 of kinematic link 10 position in hollow front-wheel loop bar 11, be provided with bearing between retainer 122 and hollow front-wheel loop bar 11, bearing is sheathed and be fixed on kinematic link 10 outside face.

About front-wheel 13: the front-wheel 13 in the present embodiment is solid wheels, wheel hub is the solid wheel hub without spoke;

First round Shaft assembly 12 in front component 1 comprises bolt, bearing and nut, and front-wheel 1313 center is fixed on bearing, and bolt passes the lower end coupling nut of bearing and kinematic link 101.

Nut, for limiting front-wheel 13, makes front-wheel 13 can conflict nut, and keeps front-wheel 13 vertical when advancing with bolt.Bolt is used for front-wheel 13 to be rotationally connected with kinematic link 10, and bearing reduces the friction between front-wheel 13 and bolt, and what folding bicycle was advanced is farther.

Three, saddle assembly 2:

Saddle assembly 2, comprising: seat bar 21 and cushion 20, and described seat bar 21 lower end is provided with the 3rd connecting portion 210, and cushion 20 connects present bar 21 upper end by fastener.

In the middle part of seat bar 21, hollow is arranged, and effectively reduces the weight of saddle assembly 2, reduces weight when folding bicycle is ridden and carries, reduces the pressure that seat bar 21 bears, improve structural strength.

Seat bar 21 top is connected with solid permanent seat, permanent seat is connected with for the fixing clip of cushion 20.The solid setting of permanent seat, effectively can increase the structural strength of permanent seat, and clip highly can be tightened under the effect of screw increases its fixing with permanent seat, makes the connection of permanent seat more solid and reliable.

Cushion 20 has supporting rod, and supporting rod is rotationally connected by Quick release and clip, and supporting rod is positioned in the middle part of Quick release.Supporting rod under cushion 20 makes cushion 20 unsettled and carries out certain support to it, and when cushion 20 pressurized, small size distortion can occur cushion 20, more comfortable during use.

The effect of Quick release is first: realize supporting rod being rotationally connected on clip, when folding bicycle is folding pack up time, can by cushion 20 upwards cocked come, make the volume of folding bicycle less, more easily carry.And when folding ride voluntarily time, cushion 20 can be pulled down, sits for normal user.

When the handle of Quick release and the bar cramp angle in the middle part of it are about 90 °, namely handle presses down, Quick release two ends pitch smaller, and being extruded at supporting rod two ends, is that supporting rod and clip fit tightly, and friction drag is large, and cushion 20 cannot rotate.When Quick release is opened, Quick release two ends spacing increases, and reduces, cushion 20 can be rotated to the two ends gripping power of supporting rod.

Four, wheel assembly 4:

Wheel assembly 4, comprise trailing wheel 43, second axle assembly 42, rear wheel frame 40 and power output system, trailing wheel 43 is connected to rear wheel frame 40 lower end by the second axle assembly 42, power output system is arranged in the middle part of rear wheel frame 40, the mouth of power output system is in transmission connection trailing wheel 43, and 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 and the 4th installing port 511 of first 5 fix, and trailing wheel 43 is connected with X-shaped center am rest.

The function of wheel assembly 4 is that power output system can be that storage battery coordinates motor, using the form of electric power power-assisted as the driving source of bicycle for bicycle provides the power of advance; Also bicycle form that can be common, realizes Power output by user's foot pedals 414, using manpower as the driving source of bicycle.

Power output system in the present embodiment be manpower as Power output, it is by flywheel 412, chain wheel 411, pedal 414, chain 413 and form for turret 410 that chain wheel 411 is fixing; Turret 410 surface is provided with for the fixing installing port 4132 of pedal 414, and pedal 414 is rotationally connected with installing port 4132 or is connected by crank.

When user's pushes pedals 414, turret 410 can be made to follow pedal 414 rotate, the chain wheel 411 on turret 410 and its synchronous axial system, chain wheel 411 is together rotated by chain 413 flywheel driven 412, flywheel 412 finally drives trailing wheel 43 to rotate, and realizes the Power output that bicycle advances.

Secondly, power output system is arranged at the inside of rear wheel frame 40, chain wheel 411, flywheel 412 and chain 413 or belt are all in the protection of rear wheel frame 40, make rear wheel frame 40 pairs of power output systems have omnibearing protection, reduction sleety weather and sunshine are on the impact of power output system; Secondly, rear wheel frame 40 can prevent foreign object from destroying the mechanical type of power output system, extends the service life of power output system greatly.

Rear wheel frame 40 is provided with and is embedded and the manhole be rotationally connected or caulking groove for turret 410, and turret 410 hollows out cylindrical in middle part.Turret 410 is embedded at rear wheel frame 40 inside and is rotationally connected with rear wheel frame 40, the support area of contact of rear wheel frame 40 pairs of turrets 410 is larger, compare the mode that traditional chain wheel 411 is connected with vehicle frame by middle part axostylus axostyle, its advantage is: rear wheel frame 40 is larger with the area of contact of turret 410, and turret 410 is embedded at rear wheel frame 40 inside, when turret 410 rotates, the periphery of rear wheel frame 40 pairs of turrets 410 has spacing and supporting role, compare the mode that original chain wheel 411 is connected with vehicle frame by central rotating shaft position, the present embodiment increases the connective stability of turret 410 greatly, prevent turret 410 from deviating from phenomenon, improve service life.

Turret 410 hollow is arranged, the cylinder hollowed out in middle part.After turret 410 hollow, the weight of its entirety declines about 70%, effectively can reduce user and pedal and trample required power, reduce difficulty of riding.

Installing port 4132 can be positioned at the sidewall of turret 410, also can be arranged at the inwall of turret 410, as long as pedal 414 can be made to be fixed on the optional position of turret 410 and to make pedal 414 drive turret 410 to rotate.And the turret 410 in the present embodiment is due to small volume, the side being installed on turret 410 easily causes the structural strength of turret 410 not enough, is therefore arranged at the inwall of turret 410, with the installing space providing pedal 414 enough.

Installing port 4132 is for the installation of pedal 414, and pedal 414 directly can be installed on installing port 4132 place, also indirectly can be connected with installing port 4132 pedal 414 with crank.The benefit that pedal 414 is directly installed is: the space that pedal 414 takies is less, and especially when folded state, pedal 414 is directly installed on the installing port 4132 of turret 410, and wheel assembly 4 can be made to seem more small and exquisite; The benefit that pedal 414 is connected indirectly by crank and installing port 4132 is: crank can increase torque arm length, and power required when user tramples is less, more laborsaving when riding.Pedal 414 in the present embodiment is directly installed on installing port 4132 place of turret 410, reduces the volume of wheel assembly 4 to greatest extent.The radius of gyration of installing port 4132 on turret 410 is about 0.9 times of chain wheel 411 radius.

Five, annexable X-shaped center am rest:

X-shaped center am rest, includes:

First 5 and second 6; Rotatable installation in the middle part of first 5 and second 6;

First 5 two ends are respectively equipped with and the first installing port 510 of the first connecting portion 310 and the detachable installation of the 4th connecting portion 400 and the 4th installing port 511;

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

X-shaped center am rest and headstock assembly 3, saddle assembly 2, front component 1, all detachable installation of wheel assembly 4, when damaging appears in random component in headstock assembly 3, saddle assembly 2, front component 1 and wheel assembly 4, all change by detachable the object that assembly reaches rapid-maintenance, the assembly damaged then can return factory and keep in repair.Avoid the worry of car load depot repair, accelerate repair progress greatly.

Secondly, the assembly of the folding bicycle in the present embodiment has different decorative patterns and color, and the folding bicycle parts of different colours decorative pattern can be carried out matched combined freely by user, meets the aesthetic requirement of individual.

Comprise for second 6 second housing, 61, four groups of stop gears 62, with the second driving shaft 65 that is connected of kinematic link 10 in front component 1 and center driving assembly 63.Second driving shaft 65 and stop gear 62 are positioned at the second housing 61, and center driving assembly 63 runs through the center being arranged on first 5 and second 6, and second driving shaft 65 the inner is in transmission connection center driving assembly 63, and outer end extends the second installing port 611.

Second driving shaft 65 is provided with the second square connecting portion towards one end of kinematic link 10, and the second square connecting portion matches with the second square groove; Kinematic link 10 upper end is provided with the second square groove; The projection 55 that second square groove is square, for matching with the second square connecting portion, enables kinematic link 10 and second driving shaft 65 drive wherein another axle together to rotate when rotating.In the present embodiment, second square connecting portion and the second square groove, because its processing is comparatively simple and easy, can reduce many overhourss and difficulty of processing, therefore the present embodiment adopts square, the cooperation according to the polygon groove such as hexagon, pentagon, triangle and block also can reach identical effect.

Detent mechanism comprises the location matrix 622, positioning gland 620, retainer spring 621 and the registration mast 623 that are fixed on the second housing 61; Location matrix 622 in be provided with ladder hole, ladder hole by near first 5 the first hole 62211 and form away from second hole 6220 of first 5; Registration mast 623 upper end is provided with positioning head, and positioning head is positioned at the second hole 6220, is positioned at the first hole 62211 in the middle part of registration mast 623; Positioning gland 620 is fixed on matrix 622 outer end, location; Retainer spring 621 is compressed between positioning gland 620 and positioning head, and is contained in the second hole 6220.

Detent mechanism is for limiting the shape of X-shaped center am rest, when X-shaped center am rest is in folding or open mode, detent mechanism can limit the relative movement of first 5 and second 6, the shape that one fixing is kept, the portability keeping the safety of driving and fold when carrying when enabling X-shaped center am rest in bicycle use or fold and pack up.

As shown in Figure 4, location matrix 622 in detent mechanism and second 6 one-body molded setting, there is stepped hole at the middle part of location matrix 622, stepped hole comprises the first hole 6221 and the second hole 6220, first hole 6221 is the through hole near first 5, and the aperture in the first hole 6221 is less than the aperture in the second hole 6220, registration mast 623 is placed with in stepped hole, the front end of registration mast 623 is positioned at the first hole 6221, the rear end of registration mast 623 is the disk and thin plate that diameter is greater than the first hole 6221, retainer spring 621 is provided with after registration mast 623, retainer spring 621 is conflicted positioning gland 620, for registration mast 623 provides a downward power, registration mast 623 is made to be in normal ejection state, press pressure registration mast 623 it can be made upwards to shrink back enter in the first hole 6221.

Launch in X-shaped with under folded state at normal operating condition bicycle, registration mast 623 is by the effect of retainer spring 621, be in the state of stretching out, and registration mast 623 enters in first 5 positioning through hole 52 corresponding with normal operating condition, make first 5 with second 6, relative rotation cannot occur, make the two fixing.

Comprise the first housing 51 for first 5, annular presses button 50 and spring, first housing 51 away from the side of second 6 be provided with hold that annular presses button 50 press button groove 513, annular presses the top compression leg 501 being provided with inside button 50 and running through and press button groove 513 bottom land, and spring is positioned to be pressed button groove 513 and is enclosed within the compression leg 501 of top.

Position and the quantity of top compression leg 501 are all corresponding with positioning through hole 52, annular press turn round be in do not press pressure condition time, registration mast 623 is through location matrix 622 and positioning through hole 52, make first 5 with second 6, relative rotation cannot occur, press turn round when pressing pressure ring shape, top compression leg 501 moves outwardly and in positioning through hole 52, registration mast 623 being extruded positioning through hole 52 makes it in retraction first hole 6221, make registration mast 623 no longer limit the rotation of first 5 and second 6, first 5 and second 6 can be rotated again.

Press turn round by pressing pressure ring shape, folding bicycle is removed spacing, make bicycle can from the using state of X-shaped to collapsed state, in rotation process, unclamp annular and press and turn round, when registration mast 623 aims at positioning through hole 52 again, registration mast 623 is again sent in positioning through hole 52 by registration mast 623 under the effect of retainer spring 621, make folding bicycle be in folded state, and first 5 and second 6 again spacingly cannot rotate, keep bicycle to be in folded state.When folding bicycle is from folded state to the using state of the X-shaped launched, it is also the same identical flow process.

Spring one end conflict on the compression leg 501 of top is pressed button groove 513 one end conflict annular and is pressed button 50, provides annular to press the power of button 50 1 resiliences, and often the time is in ejection state to make the annular in detent mechanism press button 50.

Also comprise the first transmission shaft 53, first transmission shaft 53 for first 5 and be provided with the first square connecting portion towards one end of drive link 30, the first square connecting portion matches with the first square groove 101; Identical with the fit form of the second square connecting portion and the second square groove, the shape of square connecting portion is square column, inserts in square groove, diaxon is docked and synchronous axial system.

Near the arc-shaped limit block 64 that second housing 61 of first 5 is provided with arc-shaped through-hole 614 and is fixed on the second housing 61, arc-shaped through-hole 614 and arc-shaped limit block 64 are centered around center driving assembly 63 outer circumferential side and are positioned at circumferentially same, the arc-shaped through-hole 614 along its arc length direction is provided with in arc-shaped limit block 64, arc spring is arranged in arc-shaped through-hole 614, and arc-shaped through-hole 614 is stretched out at two ends.

As shown in Figure 4 and Figure 5, X-shaped center am rest also comprises rotating and limiting mechanism 62, rotating and limiting mechanism 62 comprise be fixed on the first housing 51 and the projection 55 stretching into arc-shaped through-hole 614 be positioned at the second housing 61 and the contiguous block 66 be connected with projection 55; Projection 55 with first 5 with second 6 relative rotation and to follow arc-shaped through-hole 614 movable; The size of contiguous block 66 is greater than the width of arc-shaped through-hole 614, and the side of contiguous block 66 is corresponding with the arc spring one end of stretching out arc-shaped limit block 64.The quantity of arc-shaped through-hole 614 and arc-shaped limit block 64 is two groups, and two groups of arc-shaped limit blocks 64 lay respectively between two groups of arc-shaped through-holes 614, forms annular.

Arc-shaped limit block 64 and the effect of arc-shaped through-hole 614 are all the rotational angles limiting the contiguous block 66 be connected with projection 55, arc-shaped limit block 64 limits the rotational angle of contiguous block 66, arc-shaped through-hole 614 limits the rotational angle of projection 55, because projection 55, contiguous block 66 are finally all connected with first 5, so place, by the rotational angle between restriction projection 55, contiguous block 66 and arc-shaped limit block 64, arc-shaped through-hole 614, limits the rotational angle of first 5 and second 6.Prevent first 5 and second 6 to relatively rotate 360 °, prevent it from rotating excessively, make the rotation amplitude of contiguous block 66 be limited in 90 °, as shown in fig. 1, the rotational angle of the relative headstock assembly 3 of saddle assembly 2 only has 90 °.

And, when folding bicycle is opened, detent mechanism to first 5 and second 6 location base on, the spacing stationkeeping ability that arc-shaped limit block 64 can also provide projection 55 certain simultaneously, the downward pressure that human body weight on saddle assembly 2 applies can also be born, by the cooperation of arc-shaped limit block 64 and projection 55, effectively bear the pressure of this part human body, prevent the damage of the registration mast 623 in detent mechanism, effectively extend the service life of the detent mechanism of middle part X-shaped center am rest.

Arc-shaped limit block 64 two ends are also provided with through hole, are placed with spring in its through hole, and when bicycle is in X deployed condition or folded state, contiguous block 66 is all conflicted with arc-shaped limit block 64.When bicycle is in deployed condition, press button 50 once user presses pressure ring shape the positioning solution of x shape center am rest is removed, first 5 and second 6 effect that can be subject to spring, change from deployed condition to folded state rapidly, vehicle frame shrinks instantaneously, and bicycle is folded to folded state by user further afterwards, before entering folded state, contiguous block 66 extrudes the spring on arc-shaped limit block 64 again, and detent mechanism completes location, and bicycle enters folded state.And when bicycle enters deployed condition from folded state, its order is identical with folding order.

Second housing 61 medial surface of arcuately through hole 614 both sides is respectively equipped with two the first ball grooves 615, article two, the first ball grooves 615 lays respectively at the both sides of arc-shaped through-hole 614, contiguous block 66 medial surface is provided with between two place second ball grooves 615, first ball grooves 615 corresponding with two the first ball grooves 615 and the second ball grooves 615 and is provided with multiple spacing ball 56.

The effect of contiguous block 66 be by contiguous block 66, arc-shaped through-hole 614 and projection 55 by second 6 tightly fit on first 5, contiguous block 66 and second 6 clamp, therefore friction force is also larger, and multiple spacing ball 56 is herein between the first ball grooves 615 and the second ball grooves 615, first 5 and second 6 friction force rotated can be reduced greatly, and the gripping power do not reduced therebetween, while guarantee safety, extend service life.

Outside wall surface inside outside wall surface inside first 5 and second 6 is respectively equipped with between corresponding annular ball grooves 57, two annular ball grooves 57 and is provided with the ringwise ball 56 of multiple arrangement.

The ball grooves 615 of first 5 and second 6 is for the placement of ball 56, ball 56 is placed on after in ball grooves 615, can reduce the friction between first 5 and second 6 greatly, reduce wear the friction reduced when folding bicycle launches or folds, and makes it use more convenient.

Steering swivel system about folding bicycle:

Its steering swivel system core place is the center driving assembly 63 being positioned at X-shaped center am rest, center driving assembly 63 comprises center driving axle 631, headstock finishing bevel gear cuter 530, front-wheel finishing bevel gear cuter 650, first transmission gear 633 and the second transmission gear 632, center driving axle 631 runs through and fixes the first transmission gear 633 and the second transmission gear 632, first transmission gear 633 and the second transmission gear 632 synchronous axial system, first transmission gear 633 is connected with headstock finishing bevel gear cuter 530, and the second transmission gear 632 is connected with front-wheel finishing bevel gear cuter 650; Center driving axle 631 two ends are all arranged with center bearing pilot bearing, and 2 center bearing pilot bearings are individually fixed in first 5 and second 6.

As shown in Figure 13 to Figure 16, headstock assembly 3 is connected with the first transmission shaft 53, and common rotation, the inner of first transmission shaft 53 has headstock finishing bevel gear cuter 530, headstock finishing bevel gear cuter 530 rotates with headstock and drives the first transmission gear 633 to rotate, because the first transmission gear 633 and the second transmission gear 632 to be all fixed on center driving axle 631 and synchronous axial system, and the front-wheel finishing bevel gear cuter 650 together transmission of the second transmission gear 632 and front component 1 kinematic link 10.Therefore, rotate headstock assembly 3 and namely by center driving assembly 63, deflection is transferred to front-wheel 13, reach the object that front-wheel 13 turns to.

In the present embodiment, because headstock assembly 3 is fixed on first 5 with wheel assembly 4, and saddle assembly 2 is fixed on second 6 with front component 1, visually give a kind of headstock of people with trailing wheel 43 one, front-wheel 13 with saddle illusion integrally, headstock rotates the sense organ illusion that will trailing wheel 43 driven to rotate, increase the curious degree of customer, make the folding bicycle in the present embodiment seem more mysterious.Finally by center driving assembly 63, the deflection of headstock assembly 3 is transferred to front-wheel 13 cleverly, headstock assembly 3 is rotated and drives front-wheel 13 to rotate, make folding bicycle seem more high-end, flexible.

In front component 1, front-wheel 13 is positioned at kinematic link 10 near the side of first 5, when keeping straight on by bike, front-wheel 13 and trailing wheel 43 are positioned on same rotational plane, and when X-shaped center am rest folds, annular handrail 33 rotating 180 deg, makes front-wheel 13 be positioned on the parallel faces of trailing wheel 43, front-wheel 13 trailing wheel 43 can be in parallel state, as shown in Figure 2.

Connection mode about folding bicycle headstock assembly 3, saddle assembly 2, front component 1, wheel assembly 4 and X-shaped center am rest:

First ~ four connecting portion 400 is corresponding first ~ four installing port 511 respectively, and the running-on that connecting portion is stepped, the cross section of connecting portion is all in round edge rectangle, and the connecting portion seat bar 21, hollow car head rod 31 etc. corresponding with it are all equidistantly arranged.The housing of rectangle manufactures comparatively simple and easy relatively, has higher structural strength, not easily deformation in compression simultaneously, and the rounding limit of circle makes the surfaces such as connecting portion seat bar 21, hollow car head rod 31 more level and smooth, prevents the scratches such as scratch from staying.

The headstock assembly 3 of folding bicycle, saddle assembly 2, front component 1, wheel assembly 4 and X-shaped center am rest connection mode adopt a kind of splicing construction fast, instead of adopt the fasteners such as screws bolts.

Described first installing port 510 inwall is provided with catching groove 90, described first connecting portion 310 is provided with movable fastening mechanism, the fastening block 9 that described movable fastening mechanism comprises deviating from button 8, connecting rod and can coordinate with catching groove 90, described fastening block 9 and the first connecting portion 310 slide or are rotationally connected, connecting rod connects to deviate from button 8 and fastening block 9, described in deviate from any place of button 8, connecting rod or fastening block 9 and be provided with the elastic component resetted for fastening block 9.

Described connecting rod comprises block connecting rod 91 and arm connecting rod 81, and block connecting rod 91 is connected with fastening block 9, arm connecting rod 81 with deviate from button 8 and be connected, arm connecting rod 81 is provided with slide bumping 812, and block connecting rod 91 is provided with and embeds and the chute 92 slided for slide bumping 812.

Described second installing port 611, the 3rd installing port 610 are identical with the connection mode of the first connecting portion 310 with the first installing port 510 with the connection mode of the 4th connecting portion 400 with the second connecting portion 110, the 3rd connecting portion 210 with the 4th installing port 511.

Adopt the quick splicing construction of the folding bicycle in this present embodiment, first connecting portion 310 and the first installing port 510 are socketed, catching groove 90 on first installing port 510 is for being connected with the movable fastening mechanism on the first connecting portion 310, when the fastening block 9 on movable fastening mechanism fastens with catching groove 90, the first connecting portion 310 and the first installing port 510 fix.

On movable fastening mechanism deviate from button 8 and connecting rod is for controlling the flexible of fastening block 9, when pressing pressure-off and going out button 8, connecting rod drives fastening block 9 to deviate from catching groove 90, disconnect the annexation between the first connecting portion 310 and the first installing port 510, make two connecting portions that relative movement can occur, realize the quick-detachment between connecting portion.

Deviate from any place of button 8, connecting rod or fastening block 9 and be provided with the spring resetted for fastening block 9, be all connected by connecting rod with fastening block 9 owing to deviating from button 8, therefore any place of three places arranges the spring of reset, and fastening block 9 all can be made to reset.Spring one end contiguous block 66 connecting rod in the present embodiment, the spring other end connects the inwall of the first connecting portion 310.For fastening block 9 provides the power of reset, make it be in and often do well, when the first connecting portion 310 and the first installing port 510 dock, fastening block 9 can enter in catching groove 90 under the action of the spring automatically, and the first connecting portion 310 and the first installing port 510 are locked.

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

Folding bicycle in the present invention will release many moneys different colours decorative pattern style, and the folding bicycle parts of different colours decorative pattern can be carried out matched combined freely by user, meet the aesthetic requirement of individual.

Connecting rod comprises block connecting rod 91 and arm connecting rod 81, block connecting rod 91 is fastening block 9 extendible portion, setting one-body molded with fastening block 9, arm connecting rod 81 with deviate from button 8 and be connected, arm connecting rod 81 is provided with slide bumping 812, and block connecting rod 91 is provided with and embeds and the chute 92 slided for slide bumping 812.

As shown in Figure 21, realize interaction relation between block connecting rod 91 and arm connecting rod 81 by slide bumping 812 and chute 92, realize the interlock of button 8 and fastening block 9.When pressing pressure-off and going out button 8, arm connecting rod 81 drives slide bumping 812 to move to the inside, because slide bumping 812 is located in chute 92, therefore block connecting rod 91 is followed it and is moved to the inside, force fastening block 9 to rotate, fastening block 9 is shunk and deviates from catching groove 90, contact the locking relation between the first connecting portion 310 and the first installing port 510, make the two be moved, reach the object of dismounting.

As shown in Figure 22 and Figure 23, fastening block 9 is triangular in shape, and fastening block 9 comprises buckling surface, and buckling surface is the clinoplane of fastening block 9 towards the first connecting portion 310, and when fastening block 9 embeds catching groove 90, the angle of buckling surface and perpendicular and angle [alpha] are 70-85 °.Angle [alpha] is more close to 90 °, that blocks both when then fastening block 9 and catching groove 90 fasten is tighter, but the fastening block 9 owing to being rotationally connected in actual production needs certain radian for rotating, therefore α angle is set herein between 70-85 °, its certain fastening power can be provided again under making fastening block 9 rotate unobstructive situation, not deviate from when ensureing that the first connecting portion 310 and the first installing port 510 fasten.

Fastening block 9 also comprises press-in face, and the angle and the angle beta that are pressed into face and perpendicular when fastening block 9 embeds catching groove 90 are less than 15 °.Angle β is less, then the squeese pressure that will overcome when the first connecting portion 310 puts into the first installing port 510 is less, more easily enters.Angle beta in the present embodiment adopts 10 °, and squeese pressure is moderate, and socket easily.

The above makes the preferred embodiment of the present invention, and under not departing from the prerequisite of the principle of the invention for the person of ordinary skill of the art, can also make some modification and improvement, these also should be considered as protection scope of the present invention.

Claims (10)

1. a fast disassembly type bicycle, is characterized in that, comprising:

A, headstock assembly (3); Comprise: handrail (33), hollow car head rod (31) and drive link (30), handrail (33) is fixed on drive link (30) one end, it is inner that drive link (30) is arranged in hollow car head rod (31), and hollow car head rod (31) has the first connecting portion (310);

B, front component (1); Comprise: kinematic link (10), hollow front-wheel loop bar (11) and front-wheel (13), front-wheel (13) is rotationally connected with one end of kinematic link (10), it is inner that kinematic link (10) is arranged in hollow front-wheel loop bar (11), and kinematic link (10) has the second connecting portion (110);

C, saddle assembly (2), comprising: seat bar (21) and cushion (20), and cushion (20) is fixed on a bar (21) upper end, and seat bar (21) has the 3rd connecting portion (210);

D, wheel assembly (4), comprise trailing wheel (43), rear wheel frame (40) and power output system (41), power output system (41) is arranged on rear wheel frame (40) middle part, trailing wheel (43) is rotationally connected with the rear end of rear wheel frame (40), and rear wheel frame (40) has the 4th connecting portion (400);

The center am rest of E, X-shaped; Include: the 4th installing port (511) that the 3rd installing port (610) that the second installing port (611) that the first installing port (510) connected with the first connecting portion (310), same second connecting portion (110) connect, same 3rd connecting portion (210) connect is connected with the 4th connecting portion (400); Described first, second, third and fourth installing port is detouchable installing port;

Center am rest also comprises: the second driving shaft (65) that the first transmission shaft (53) that same drive link (30) connects, same to kinematic link (10) connect and center driving assembly (63), described center driving assembly (63) includes gear or belt pulley, and transmission device is positioned at the first transmission shaft (53) and second driving shaft (65).

2. fast disassembly type bicycle according to claim 1, it is characterized in that: described first installing port (510) inwall is provided with catching groove (90), described first connecting portion (310) is provided with movable fastening mechanism, described movable fastening mechanism comprises deviating from button (8), connecting rod and can the fastening block (9) that coordinates of same catching groove (90), described fastening block (9) and the first connecting portion (310) slide or are rotationally connected, connecting rod connects to deviate from button (8) and fastening block (9), described deviate from button (8), connecting rod or any place of fastening block (9) are provided with the elastic component resetted for fastening block (9),

Described connecting rod comprises block connecting rod (91) and arm connecting rod (81), block connecting rod (91) is connected with fastening block (9), arm connecting rod (81) with deviate from button (8) and be connected, arm connecting rod (81) is provided with slide bumping (812), and block connecting rod (91) is provided with and embeds and the chute slided (92) for slide bumping (812);

Described second installing port (611), the 3rd installing port (610) and the 4th installing port (511) are identical with the connection mode of the first connecting portion (310) with the first installing port (611) with the connection mode of the 4th connecting portion (400) with the second connecting portion (110), the 3rd connecting portion (210).

3. fast disassembly type bicycle according to claim 1, it is characterized in that: described center driving assembly (63) comprises center driving axle (631), headstock finishing bevel gear cuter (530), front-wheel finishing bevel gear cuter (650), first transmission gear (633) and the second transmission gear (632), described center driving axle (631) is run through and is fixed the first transmission gear (633) and the second transmission gear (632), first transmission gear (633) and the second transmission gear (632) synchronous axial system, first transmission gear (633) is connected with headstock finishing bevel gear cuter (530), second transmission gear (632) is connected with front-wheel finishing bevel gear cuter (650), center driving axle (631) two ends are all arranged with center bearing pilot bearing (630), and described 2 center bearing pilot bearings (630) are individually fixed in first (5) and second (6).

4. the fast disassembly type bicycle according to claim 1 or 2 or 3, is characterized in that: described center am rest includes: first (5) and second (6); First (5) and second (6) rotatable installation in middle part;

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

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

Described second (6) comprise the second housing (61), at least two group stop gears (62), with the second driving shaft (65) that is connected of kinematic link (10) in front component and center driving assembly (63);

Second driving shaft (65) and stop gear (62) are positioned at the second housing (61), center driving assembly (63) runs through the center being arranged on first (5) and second (6), second driving shaft (65) the inner is in transmission connection center driving assembly (63), and outer end extends described second installing port (611);

Described detent mechanism (62) comprises the location matrix (622) be fixed on the second housing (61), positioning gland (620), retainer spring (621) and registration mast (623); Be provided with ladder hole in described location matrix (622), ladder hole by near first (5) the first hole (6221) and form away from second hole (6220) of first (5); Described registration mast (623) upper end is provided with positioning head, and positioning head is positioned at the second hole (6220), and registration mast (623) middle part is positioned at the first hole (6221); Positioning gland (620) is fixed on matrix (622) outer end, location; Retainer spring (621) is compressed between positioning gland (620) and positioning head, and is contained in the second hole (6220);

Described first (5) comprise the first housing (51), annular presses button (50) and spring (502), first housing (51) away from the side of second (6) be provided with hold that annular presses button (50) press button groove (513), annular is pressed button (50) inner side and is provided with the top compression leg (501) running through and press button groove (513) bottom land, and described spring (502) is positioned to be pressed button groove (513) and is enclosed within top compression leg (501);

First housing (51) is provided with positioning through hole (52) near the side of second (6); The quantity on positioning through hole (52) and top compression leg (501) is mated with registration mast (623) respectively, the inner, top compression leg (501) corresponding described positioning through hole (52) respectively;

When first (5) and second (6) are in X-shaped, described positioning through hole (52) is corresponding with described registration mast (623) respectively; Registration mast (623) lower end is stretched out in the positioning through hole (52) of second (6) to first (5).

5. fast disassembly type bicycle according to claim 4, it is characterized in that: the second housing (61) near first (5) is provided with arc-shaped through-hole (614) and is fixed on the arc-shaped limit block (64) on the second housing (61), and described arc-shaped through-hole (614) and arc-shaped limit block (64) are centered around center driving assembly (63) outer circumferential side and are positioned at circumferentially same;

X-shaped center am rest also comprises rotating and limiting mechanism, rotating and limiting mechanism comprise be fixed on the first housing (51) and the projection (55) stretching into arc-shaped through-hole (614) be positioned at the second housing (61) and the contiguous block (66) be connected with projection (55); Projection (55) follows arc-shaped through-hole (614) with first (5) rotation relative to second (6) movable; The size of described contiguous block (66) is greater than the width of arc-shaped through-hole (614).

6. fast disassembly type bicycle according to claim 5, it is characterized in that: in arc-shaped limit block (64), be provided with the arc spring hole (641) along its arc length direction, arc spring is arranged in arc spring hole (641), and described arc spring hole (641) is stretched out at two ends, the side of contiguous block (66) is corresponding with the arc spring one end of stretching out described arc-shaped limit block (64).

7. the fast disassembly type bicycle according to claim 1 or 2 or 3, is characterized in that: described power output system (41) is by flywheel (412), chain wheel (411), pedal (414), chain (413) and form for the turret (410) that chain wheel (411) is fixing;

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

Turret (410) surface is provided with for the fixing installing port (4132) of pedal (414), and pedal (414) is rotationally connected with installing port (4132) or is connected by crank.

8. fast disassembly type bicycle according to claim 4, it is characterized in that: the outside wall surface of first (5) inner side and the outside wall surface of second (6) inner side are respectively equipped with corresponding annular ball grooves (57), between two annular ball grooves (57), are provided with the ringwise ball of multiple arrangement (56).

9. fast disassembly type bicycle according to claim 5, it is characterized in that: be respectively equipped with two the first ball grooves (615) along on the second housing (61) medial surface of described arc-shaped through-hole (614) both sides, contiguous block (66) medial surface is provided with two places second ball grooves (660) corresponding with described two the first ball grooves (615), is provided with multiple spacing ball (67) between described first ball grooves and the second ball grooves (660).

10. fast disassembly type bicycle according to claim 7, it is characterized in that: described rear wheel frame (40) is provided with and is embedded and the manhole be rotationally connected or caulking groove for turret (410), and described turret (410) hollows out cylindrical or solid cylindrical in middle part.