CN204895715U - Folding bicycle of high strength area lock - Google Patents

Abstract

The utility model discloses a folding bicycle of high strength area lock, including ring handrail, the handrail front end is equipped with the opening, and be equipped with the lock on the handrail of opening part and make the handrail be confined locking Assembly, locking Assembly and handrail sliding connection, locking Assembly has the locking structure of its removal of restriction. When bicycle lock is lived to needs, only need find locking things such as the railing that can lock, the locking thing is put into from ring handrail's opening, locking subassembly and handrail sliding connection, slip through the locking subassembly make the handrail seal and the open mode between switch wantonly, the user need not to carry in addition the tool to lock again, avoids unnecessary worried. Secondly, the structural strength of its frame is high, is difficult for receiving physics and impactes and take place to warp, break in the use, can effectively strengthen the firm in connection nature of other subassemblies yu the middle part frame of bicycle.

Description

The folding bicycle that a kind of high strength is locking

Technical field

The present invention relates to a kind of vehicle, it is the locking folding bicycle of a kind of high strength.

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, 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 stand part of this bicycle is owing to existing, and many places are hinged, riveted joint, and vehicle frame major part is by the welding of many metal tubes, and vehicle frame not integral structure completely, causes the intensity of its vehicle frame not high.

Meanwhile, folding bicycle, after finishing using, is folded and is drawn in, but is easy to carry about with one because it is comparatively light, is very easily stolen.Meanwhile, the user of its folding bicycle often can not carry the lockset such as anti-theft column lock, mild steel safeguard chain, when therefore being placed by folding bicycle, needs to carry lockset in addition temporarily, increases the worry that user carries.

Summary of the invention

Goal of the invention of the present invention is in order to folding stand undercapacity and will carries the problem of lockset in addition, the folding bicycle that a kind of high strength is locking is provided, other each assemblies of folding stand and bicycle is connected, and is wholely set, extend vehicle frame, improve the structural strength of folding stand; And headstock has latch-up structure, avoid the worry of additionally carrying lockset.

In order to realize foregoing invention object, present invention employs following technical scheme: the folding bicycle that a kind of high strength is locking, comprising:

E, annexable X-shaped center am rest; Include: first and second; First and second rotatable installation in middle part; Described first or second is provided with both restrictions stop gear or detent mechanism in relative rotation;

Described first two ends are respectively equipped with hollow car head rod and rear wheel frame, and first comprises the first housing, and hollow car head rod, rear wheel frame are with the one-body molded setting of the first housing;

Described second two ends are respectively equipped with a bar and front-wheel hollow front-wheel loop bar, and second comprises the second housing, and seat bar, front-wheel hollow front-wheel loop bar are with the one-body molded setting of the second housing;

A, headstock assembly; Comprise: annular 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;

Handrail front end is provided with opening, and the handrail of opening part is provided with the latch assembly fastening and handrail is connected with shaft, latch assembly and handrail slider or be rotationally connected, and described latch assembly has the latch-up structure limiting its movement.

B, front component; Comprise: kinematic link 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 is connected with drive link;

C, saddle assembly, comprising: cushion, and cushion is fixed on a bar upper end;

D, wheel assembly, comprise trailing wheel 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.

Further, described headstock assembly also comprises threeway bearing, and described handrail is in the round rectangle closed; Handrail comprises flat segments, side handle and front end handle, and this flat segments is fixed on described threeway bearing, and vertical with described hollow car head rod.

Further, described front end handle is provided with opening, and latch assembly is positioned at opening part, latch assembly comprises locking bushing, locking bushing is slidably connected on the front end handle of opening part, and described latch-up structure is between locking bushing and front end handle, and latch-up structure adopts elasticity snap lock form;

The lockhole that latch-up structure comprises elastic lock tongue, opens the lock core of dead bolt locking and fasten for dead bolt, lockhole is positioned on locking bushing, and dead bolt and lock core are located in the handle of front end; The return springs making handrail be in normally off is provided with in described locking bushing.

Further, described second also comprises at least two group detent mechanisms and center driving assembly;

Detent mechanism is positioned at the second housing, and center driving assembly runs through the center being arranged on first and second, and described center driving assembly is between kinematic link and drive link;

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;

Described first also comprises annular and presses button and spring, the 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 press button groove and be enclosed within and pushes up on compression leg;

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 stop gear, stop gear 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 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, 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, the quantity of arc-shaped through-hole and arc-shaped limit block is two groups, and two groups of arc-shaped limit blocks lay respectively between two groups of arc-shaped through-holes, forms annular.

Compared with prior art, have employed the folding bicycle that the high strength of technique scheme is locking, there is following beneficial effect:

Adopt the folding bicycle that high strength of the present invention is locking, first, the structural strength of its vehicle frame is high, is not in use vulnerable to physical shock and deforms, breaks, effectively can strengthen other assemblies of bicycle and the connectivity robustness of middle carriage.

Hollow car head rod, rear wheel frame, with the one-body molded setting of the first housing, extend the length of first, make first for fixing headstock assembly and wheel assembly; Seat bar, front-wheel hollow front-wheel loop bar, with the one-body molded setting of the second housing, extend the length of second, make second for fixing front component and saddle assembly.

One-body molded arrange after, first and second connection with each assembly more firm, connecting portion is easy fracture not.

The folding mode of X-shaped center am rest is folded by the realization that is rotationally connected of first and second, and center am rest can be folded to I shape by X-shaped.Stop gear on center am rest or detent mechanism are for limiting relatively rotating between first and second.Stop gear can be one section of deep-slotted chip breaker, and both maintenances relatively rotate in certain angle.Detent mechanism can be latch etc., by interting first and second, plays positioning action.

Secondly, latch-up structure can make headstock lock onto in other loadings, and folding bicycle, without the need to carrying lockset in addition, can be carried out interim depositing, play antitheft effect by user.

When bicycle pins by needs, only need to find the railing etc. that can lock to lock thing, locking thing is put into from the opening of annular handrail, and locked component is connected with handrail slider, makes handrail close any switching laws between open mode by the slip of locked component.After locked component locking, locking thing cannot take out in handrail, plays antitheft effect.

Accompanying drawing explanation

Fig. 1 is the structural representation of folding bicycle embodiment 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 structural representation lock-out state of headstock assembly in the embodiment of the present invention;

Figure 20 is the structural representation open mode of headstock assembly in the embodiment of the present invention;

Figure 21 is the partial enlarged drawing in Figure 18;

Figure 22 is the cutaway view of embodiment of the present invention Elastic snap lock structure.

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, detent mechanism; 620, gland; 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.

Detailed description of the invention

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

A kind of folding 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 13 center is fixed on bearing, and bolt passes the lower end coupling nut of bearing and kinematic link 10.

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 detent mechanisms 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 detent mechanism 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.

As shown in Figure 7: top pressure head 5010 is cylindrical, is slightly less than the diameter of positioning through hole 52, the gap between positioning through hole 52 and top pressure head 5010 is less than 0.1mm; Positioning through hole 52 is provided with the extension hole wall for increasing directional tagging towards the side of pushing up compression leg 501.

The diameter of top pressure head 5010 is less than positioning through hole 52, and top pressure head 5010 is pressed under the effect of button 50 in annular and can be headed in positioning through hole 52, and ejected by registration mast 623, the positioning action of detent mechanism was lost efficacy, and first 5 with second 6, relative rotation can occur.Extend hole wall for increasing the length of positioning through hole 52, make it more obvious to the directional tagging of registration mast 623.

The length of top pressure head 5010 is identical with positioning through hole 52 degree of depth.Annular press button 50 press pressure top pressure head 5010 is entered in positioning through hole 52 time, registration mast 623 need be ejected positioning through hole 52 by top pressure head 5010 completely, and push up pressure head 5010 and also must be positioned at positioning through hole 52, the contact surface namely pushing up pressure head 5010 and registration mast 623 is in the rotational plane of first 5 and second 6.

In actual production process, inspection between top pressure head 5010 and positioning through hole 52: top pressure head 5010 is put into positioning through hole 52, observe the position of top pressure head 5010 from opposite side, can judge that whether the length of pushing up pressure head 5010 is identical with the length of positioning through hole 52, whether meet demand.Limit the overhang of top compression leg 501 with this, prevent top compression leg 501 from stretching out and excessively enter in the first hole 6221, cause first 5 and second 6 to be difficult to rotate.

Simultaneously, about the amount of stretching into of top compression leg 501, also position limiting structure can be set on top compression leg 501 afterbody (annular presses button 50 end), prevent top compression leg 501 from excessively stretching into, but compare the limit method of above-mentioned top pressure head 5010, above-mentioned limit method is easier to measure and judge.

The top of top pressure head 5010 and registration mast 623 is all in dome, because both top pressure head 5010 and registration mast 623 contact surface is positioned on the interface of first 5 and second 6, according to the top pressure head 5010 not with bevel edge and registration mast 623, then in the process of rotating, push up that pressure head 5010 or registration mast 623 be easy to can in the first hole 6221 or positioning through hole 52.Therefore, by setting up dome, make the two on interface, have certain transition cambered surface.Also can reach similar effect according to chamfering, but adopt dome effect better.

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 stop gear, stop gear 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 660, first ball grooves 615 corresponding with two the first ball grooves 615 and the second ball grooves 660 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 660, 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.

Wherein, the shape of the second ball grooves can as shown in Figure 9, and the second ball grooves is two arcuate line segment and arranges with the centre of gration of contiguous block is concentric, and all spacing balls are all positioned at deep-slotted chip breaker, conflicts each other and keeps respective position.

Secondly, the shape of the second ball grooves also can be as shown in Figure 8, second ball grooves is made up of multiple hemispheric groove, each spacing ball is positioned at its respective hemispheric second ball grooves, compared with the second ball grooves in Fig. 9, second ball grooves of Fig. 8 is more obvious for the position limitation of spacing ball, not easily produces spacing ball and jumps out phenomenon, adopts the second ball grooves in Fig. 8 in the present embodiment.

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 57 of first 5 and second 6 is for the placement of ball 56, ball 56 is placed on after in ball grooves 57, 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.

● the 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.

● about the connection of folding bicycle headstock assembly 3, saddle assembly 2, front component 1, wheel assembly 4 and X-shaped center am rest

Mode:

Hollow car head rod 31, rear wheel frame 40, with the one-body molded setting of the first housing 51, extend the length of first 5, make first 5 for fixing headstock assembly 3 and wheel assembly 4; Seat bar 21, front-wheel hollow front-wheel loop bar 31, with the one-body molded setting of the second housing 61, extend the length of second 6, make second 6 for fixing front component 1 and saddle assembly 2.

One-body molded arrange after, first 5 and second 6 connection with each assembly more firm, connecting portion is easy fracture not.

The structural strength of its vehicle frame is high, is not in use vulnerable to physical shock and deforms, breaks, effectively can strengthen other assemblies of bicycle and the connectivity robustness of middle carriage.

First 5, second 6 cross section with the connecting portion of each assembly is all in round edge rectangle, the housing of rectangle manufactures comparatively simple and easy relatively, there is higher structural strength simultaneously, not easily deformation in compression, 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, prevent the scratches such as scratch from staying.

● the blocking device about folding bicycle:

The headstock assembly 3 of the folding bicycle in the present embodiment is with blocking device.

The flat segments 333 that annular handrail 33 comprises side handle 332, front end handle 331 fixes with threeway bearing 34 of headstock assembly 3, front end handle 331 is provided with opening, the front end handle 331 of opening part slidably connects locking bushing 35, latch-up structure between locking bushing 35 and front end handle 331, latch-up structure adopts elasticity snap lock form.

By the slip of locking bushing 35, annular handrail 33 is made to close any switching laws between open mode, when handrail is in open mode, the circle of handrail can be put into as locking things such as railings, handrail closed by slide lock sleeve 35 more afterwards, make handrail be closed condition, locking thing cannot take out in handrail, reaches the object of locking.

Elasticity fastens latch-up structure for limiting the movement of locking bushing 35, and when latch-up structure is locked, locking bushing 35 cannot move, and the locking such as railing thing cannot take out in handrail, reaches antitheft object.

Elasticity fastens latch-up structure and comprises elastic lock tongue 3312, opens the lock core 3311 that dead bolt 3312 locks and the lockhole fastened for dead bolt 3312, and lockhole is positioned on locking bushing 35, and dead bolt 3312 and lock core 3311 are located in front end handle 331.

Elasticity fastens latch-up structure and comprises elastic lock tongue 3312, lock core 3311 and lockhole, and when locking bushing 35 elasticity of compression dead bolt 3312, dead bolt 3312 is pressed in front end handle 331, and when dead bolt 3312 aims at lockhole, dead bolt 3312 is subject to elastic force and ejects.

Lock core 3311, can rotational lock core 3311 by key for controlling the flexible of dead bolt 3312, and make dead bolt 3312 can be positioned at lockhole under the effect of key, the movement of restriction locking bushing 35, reaches the object of locking; Also dead bolt 3312 can be made to depart from lockhole by key rotation lock core 3311, locking bushing 35 freedom of movement, the locking such as railing thing can take out from the opening part of handrail.

In order to increase the appearance looks elegant degree of headstock assembly 33, in locking bushing 35, be also provided with the return springs making handrail be in normally off.Act on using of spring, locking bushing 35 by spring compresses to the one end at dead bolt 3312 place, when latch-up structure does not use as user by bike, walk one's bicycle walking time, handrail is in the annularity closed, prevent user's hand to be strayed into opening, cause skin injury.And maintain the integrity degree of handrail, exquisite appearance.

Locking bushing 35 is also provided with the key hole corresponding with lock core 3311, one end semicircular in shape of key hole above, and the other end is directly got through, and for increasing the complete appearance degree of locking bushing 35, its outward appearance is more got consumer reception.

In use, locking bushing 35 is to lock core 3,311 one Slideslip, and when dead bolt 3312 buckles into lockhole, locking bushing 35 is difficult to again skid off, and is now rotated by lock core 3311 by key, makes dead bolt 3312 be difficult to be subject to external force and be moved, and realizes locking; When opening locking, again turn lock core 3311 with key, dead bolt 3312 can be moved, press pressure dead bolt 3312 by finger and dead bolt 3312 is compressed, dead bolt 3312 deviates from lockhole, and locking bushing 35 can move again, removes the lock-out state of headstock assembly 3.

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. the folding bicycle that high strength is locking, is characterized in that, comprising:

E, annexable X-shaped center am rest; Include: first (5) and second (6); First (5) and second (6) rotatable installation in middle part; Described first (5) or second (6) are provided with both restrictions stop gear or detent mechanism in relative rotation;

Described first (5) two ends are respectively equipped with hollow car head rod (31) and rear wheel frame (40), first (5) comprise the first housing (51), and hollow car head rod (31), rear wheel frame (40) are with the first housing (51) one-body molded setting;

Described second (6) two ends are respectively equipped with a bar (21) and front-wheel hollow front-wheel loop bar (11), second (6) comprise the second housing (61), and seat bar (21), front-wheel hollow front-wheel loop bar (11) are with the second housing (61) one-body molded setting;

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

Handrail (33) front end is provided with opening, the handrail (33) of opening part is provided with the latch assembly fastening and handrail is connected with shaft, latch assembly and handrail (33) slide or are rotationally connected, and described latch assembly has the latch-up structure limiting its movement;

B, front component (1); Comprise: kinematic link (10) 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) is connected with drive link (30);

C, saddle assembly (2), comprising: cushion (20), and cushion (20) is fixed on a bar (21) upper end;

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

2. the folding bicycle that high strength according to claim 1 is locking, is characterized in that: described headstock assembly (3) also comprises threeway bearing (34), and described handrail (33) is in the round rectangle closed; Handrail (33) comprises flat segments (333), side handle (332) and front end handle (331), this flat segments (333) is fixed on described threeway bearing (34), and vertical with described hollow car head rod (31).

3. the folding bicycle that high strength according to claim 2 is locking, it is characterized in that: described front end handle (331) is provided with opening, latch assembly is positioned at opening part, latch assembly comprises locking bushing (35), locking bushing (35) is slidably connected on the front end handle (331) of opening part, described latch-up structure is positioned between locking bushing (35) and front end handle (331), and latch-up structure adopts elasticity snap lock form;

The lockhole (352) that latch-up structure comprises elastic lock tongue (3312), opens the lock core (3311) of dead bolt locking and fasten for dead bolt, lockhole (352) is positioned on locking bushing (35), and dead bolt (3312) and lock core (3311) are located in front end handle (331); Described locking bushing is provided with the return springs making handrail be in normally off in (35).

4. the folding bicycle that high strength according to claim 1 is locking, is characterized in that: described second (6) also comprise at least two group detent mechanisms (62) and center driving assembly (63);

Detent mechanism (62) is positioned at the second housing (61), center driving assembly (63) runs through the center being arranged on first (5) and second (6), and described center driving assembly (63) is positioned between kinematic link (10) and drive link (30);

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) also comprise annular and press 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. the folding bicycle that high strength according to claim 4 is locking, 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 stop gear, stop gear 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. the folding bicycle that high strength according to claim 5 is locking, 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 folding bicycle that the high strength according to claim 4 or 5 is locking, 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).

8. the folding bicycle that high strength according to claim 1 is locking, 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. the folding bicycle that high strength according to claim 5 is locking, 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. the folding bicycle that high strength according to claim 5 is locking, it is characterized in that: 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), form annular.