CN207106771U - A kind of universal joint turns to trick with joint efforts can single leg riding bicycle - Google Patents

Abstract

It the utility model is related to bicycle art, especially a kind of universal joint turn to that trick makes a concerted effort can single leg riding bicycle, including front wheel, front-wheel crotch, bicycle rear, rack body, cushion assembly, direction hand handle, paired sprocket wheel and trailing wheel crotch, as improvement：Front fork rotating shaft upper end and power-assisted handle are connected between making end by universal joint part, there is symmetrical ratchet bicycle rear both sides, support axis both sides are all fixed with paired sprocket wheel, are symmetrically arranged with pedal pivot pin on the outside of paired sprocket wheel, have symmetric chain to be connected between paired sprocket wheel and symmetrical ratchet；The utility model sets up universal joint part, power-assisted sliding sleeve, power-assisted swing rod and power-assisted connecting rod, realizes both hands and participates in acting；Set up seat yaw bar and pull bar pendulum fork, overcome the limitation that the pedal Board position of conventional bicycle two has to differ by 180 degree, alternately exerted a force without two pin, can single legs and feet ride；Cushion assembly can move forward and backward regulation on seat yaw bar and fix.

Description

A kind of universal joint turns to trick with joint efforts can single leg riding bicycle

Technical field

The present invention relates to bicycle art, International Classification of Patents B62M, especially a kind of universal joint turns to trick and made a concerted effort Can single leg riding bicycle.

Background technology

Existing ordinary bicycle is mostly to realize motion by both legs alternating pedal, and left and right both feet, which alternately are stepped on to pedal, to be also resulted in Firmly imbalance, both hands can only be accomplished to hold direction and brake and assistance balance transient state.Both hands can not help both legs at all A helping hand, single leg impedient people can not be competent at all to be controlled, and abled person can not be also controlled after a legs and feet injury occasionally Bicycle.The drive device of bicycle in daily life is all convolution pedal-type, and both feet alternately step on the mechanism pedaled such as song Handle linkage, produces upper and lower two dead points, thus can not continuous doing work, the shortcomings of inefficient be present.When pedal rod and chain When taking turns the position relationship between axis perpendicular to ground, left and right pin, which scrunches downwards, can not produce driving force, only work as pedal rod When position between sprocket wheel axis is into horizontal relationship, just do not flog a dead horse.Therefore, someone is provided with sheath buckle type prop stand for bicycle Pedal, allow the pin of bicyclist to be close to step tread plate, such as granted patent number in any position of circumference：201020300738.7；Set It is that people's car is difficult to separate when getting into an accident that button bicycle pedal, which has one disadvantage in that,.Moreover, the pin of bicyclist is only in circumference Under when pedaling position, maximum effect could be made to step tread plate, in addition to pedaling position under, the pin of bicyclist almost can not be to pedal Plate exerts a force.Circular chain-wheel is designed as ellipse, such as granted patent number by somebody：201280041248.1 bicycle is non-right Claim ellipse wheel, etc. all be painstakingly to improve bicycle to improve speed.In order to allow both hands also can be to both feet one The power of arm, someone by the hand-operated mechanism of disabled person with bicycle, such as a kind of B2 of United States Patent (USP) US 9,056,653 brothers The bicycle Hand-foot compound bicycle with double ratchet of compound double ratchet wheels, its hand-operated mechanism band Come that left and right is unstable, and the pedal-type bicycle that still could not solve to circle round necessarily leads to the intrinsic drawback at upper and lower two dead points. Domestic and international bicycle one-hundred-year history proves at 2 points：First, the bicycle of low-carbon environment-friendly is never eliminated；Second, low-carbon environment-friendly Bicycle certainly can be with creative improvement.It is both hands that both hands effectively control steering while power-assisted using which kind of mechanism The technical bottleneck of moped.

The content of the invention

It is an object of the invention to provide universal joint turn to trick make a concerted effort can single leg riding bicycle assemble method, pass through wound The property made improves driving force structure, and dexterously that hand, pin is firmly harmonious, sprocket periphery process is adopted by Continuous Drive Combination power-assisted slider mechanism is turned to universal joint to solve the problems mentioned in the above background technology, to realize that raising is ridden speed Degree.

A kind of universal joint turn to trick make a concerted effort can single leg riding bicycle, including front wheel, front-wheel crotch, bicycle Trailing wheel, rack body, cushion assembly, direction hand handle, paired sprocket wheel and trailing wheel crotch, front-wheel crotch include front fork hole seat and front fork Rotating shaft, direction hand handle both sides are respectively fixed with front brake handle and rear braking handle, and there is power-assisted direction hand handle lower end vertical；Front brake handle Front brake lock is connected to by preceding brake flexible cord, front brake lock is fixed on described front-wheel crotch；Rear braking is soft by rear brake Line is connected to rear brake brake, and rear brake brake is fixed on described trailing wheel crotch；There is entry before support on described rack body With support central axis hole, rotatable fixed support axis on support central axis hole；As improvement：

Described front fork rotating shaft upper end and power-assisted handle are connected between making end by universal joint part, bicycle rear both sides There is symmetrical ratchet, support axis both sides are all fixed with paired sprocket wheel, are symmetrically arranged with pedal pivot pin on the outside of paired sprocket wheel, in pairs There is symmetric chain to be connected between sprocket wheel and symmetrical ratchet；Described power-assisted is fixedly connected universal joint top connection end is made, Front fork rotating shaft upper end is fixedly connected universal joint lower contact, and activity is solid between universal joint lower contact and universal joint top connection Determine universal joint square；

There are swing rod wears groove and power-assisted support hole seat on bracket upper beam, there is in swing rod hole circle in bore and swing rod on power-assisted swing rod And swing rod lower fork, there is swing rod lower base hole on swing rod lower fork；Hole circle passes through swing rod wears groove on swing rod, and swing rod pivot pin is passed through in swing rod Bore in swing rod is simultaneously fixed in described power-assisted support hole seat by bore；There are sliding sleeve through hole and a pair of sliding sleeve pendulum on power-assisted sliding sleeve Seat, there is sliding sleeve pin-and-hole on sliding sleeve swing seat, is hinged on sliding sleeve pin-and-hole and swing rod between the circle of hole by sliding sleeve pivot pin, sliding sleeve through hole with it is described Power-assisted between vertical to be slidably matched；There are a connecting rod power-assisted hole and connecting rod pedal hole in power-assisted connecting rod rear and front end respectively, under swing rod Pivot pin is driven by hand to be hinged, be rotatable cooperation between connecting rod pedal hole and pedal pivot pin between bore and connecting rod power-assisted hole；

There is a rear pillar seat support hole support rear pillar upper end, and pull bar pendulum fork upper and lower ends do not have under pull bar bore on entry and pull bar, There are seat slide, slide rail pin-and-hole and seat pendulum fork on seat yaw bar, have a bolt hole on seat pendulum fork；Rear pillar seat support hole and seat It is hinged between lever pin hole by seat pivot pin；Be hinged on seat bolt hole and pull bar by pull bar pivot pin between bore, under pull bar entry with It is rotatable cooperation between pedal pivot pin；

Seat yaw rod rear end can adjust fixed described cushion assembly.

Improved as further：Described cushion assembly also includes seat chute and chute pin-and-hole and gravity seat, weight There is backrest power seat rear end, and the angle between gravity seat and backrest is 115~135 degree of obtuse angles；Seat chute with May be selected be directed to be slidably matched between seat slide, between chute pin-and-hole and slide rail pin-and-hole, chute pin-and-hole and slide rail pin-and-hole it Between be fixedly connected by grooved rail pivot pin.

Improved as further：Described universal joint part by universal joint top connection and universal joint lower contact and Universal joint square is formed, and has horizontal pivot pin and longitudinal pivot pin on universal joint square, being sold on joint will connect on universal joint Head is fixed on power-assisted making end, there is prong on joint in universal joint top connection, has pin-and-hole on joint on prong on joint, connects On head between pin-and-hole and horizontal pivot pin for can rotation fix；Universal joint lower contact is fixed in front fork rotating shaft by pin under joint End, there is prong under joint in universal joint lower contact, there is pin-and-hole under joint under joint on prong, pin-and-hole and longitudinal pivot pin under joint Between for can rotation fix.

Improved as further：Support axis both sides are symmetrically arranged with axis neck, have axis square column on the outside of axis neck, There is axis stud the axis square column outer end of both sides, and the interior snap ring of axle is located at limit bracket central axis hole and support among axis neck Axial displacement between axis；There are centre of sprocket square hole and sprocket wheel to pedal axle square hole on described paired sprocket wheel, sprocket wheel is pedaled on axle square hole Secure fit pedal pivot pin；Centre of sprocket square hole is engaged with axis square column, axis nut and axis stud immovable fitting, in Axle nut blocks paired sprocket wheel；

There is crank shaft shoulder block on described pedal pivot pin, crank shaft shoulder block end face outside has a pedal fixing threaded hole, and pedal is solid Determine to be combined with pedal fixing screws on screw；Pedal fixing screws fix step tread with pedal fixing threaded hole immovable fitting On pedal pivot pin；There are pedal bent axle face, pedal square shaft section and crank shaft stud successively on the inside of crank shaft shoulder block；Connecting rod pedal hole On there is connecting rod to pedal hole bushing, connecting rod pedal hole bushing endoporus and pedal bent axle face it is cylindrical between coordinate for rotary sliding；Under pull bar Have pull bar entry bushing on entry, pull bar entry bushing endoporus and pedal bent axle face it is cylindrical between coordinate for rotary sliding；Every It is located at connecting rod from slipping ring to pedal between hole bushing and pull bar entry bushing, for eliminating end face interference；Pedal bent axle face step with into To there is square hole back-up ring between sprocket wheel, for reducing end-face friction；Sprocket wheel is pedaled axle square hole and is enclosed in pedal square shaft section, crank shaft stud On be combined with pedal nut, pedal nut and crank shaft stud immovable fitting, paired sprocket wheel is fixed in pedal square shaft section.

The beneficial effects of the invention are as follows：

（One）, front fork rotating shaft upper end and power-assisted making between end by universal joint part, with reference to having cunning on power-assisted sliding sleeve Set through hole and described power-assisted to be slidably matched, can drive between vertical power-assisted swing rod together with swing rod lower fork using swing rod pivot pin as Fulcrum does rotation clockwise or counterclockwise, drives pedal pivot pin together with paired sprocket wheel using support axis as fulcrum by power-assisted connecting rod Do and rotate, creativity is played at " the high-order dead point " and " low level dead point " of conventional bicycle；Set universal joint part can Realize that cyclist's both hands hold direction hand handle while being pushed away before doing or post-tensioning moves, change front-wheel left/right rotation at any time will not be hindered To；Especially with body Action of Gravity Field in cushion assembly so that seat yaw bar is together with cushion assembly using seat pivot pin as branch Point does rotation counterclockwise, then drives pull bar pendulum fork to make " above proposing " action, moves pedal pivot pin together with paired sprocket wheel with support Axle is that fulcrum does rotate counterclockwise；The present invention sets up universal joint part, power-assisted sliding sleeve, power-assisted swing rod and power-assisted connecting rod, real Show both hands and participate in acting；The present invention sets up seat yaw bar and pull bar pendulum fork, overcomes the pedal Board position of conventional bicycle two Have to differ by the limitation of 180 degree, alternately exerted a force without two pin, can single legs and feet ride；

（Two）, seat yaw bar do rotation clockwise or counterclockwise by fulcrum of seat pivot pin, pass through pull bar pendulum fork pull Pedal pivot pin does up rotation together with paired sprocket wheel by fulcrum of support axis；Pin is acted on by single pin with reference to cyclist's gravity Pedal on pivot pin, driving pedal pivot pin does descending rotation, body erect and weight of squatting down together with paired sprocket wheel by fulcrum of support axis Power and the smooth handing-over of both hands thrust and pulling force, make a concerted effort to give the driving of pedal pivot pin paired sprocket wheel rotation, not only realize and carry The purpose of high riding speed, the crank shaft pins position of both sides is on same axial line, and the also thorough standard bicycle that eliminates is because of left and right pin Double swerve caused by alternately exerting oneself；And single leg is uprightly squatted down alternately with buttocks, with reference to the complete of both hands thrust and pulling force U.S.'s combination, has also reached exercising abdominal muscles and the body-building effect of all-around exercises；

（Three）, pedal pivot pin pedal bent axle face is set between crank shaft shoulder block and pedal square shaft section, connecting rod pedals hole bushing Endoporus and pull bar entry bushing endoporus with pedal bent axle face it is cylindrical between coordinate for rotary sliding, ride easily smooth；Pin Pedaling has square hole back-up ring between bent axle face step and paired sprocket wheel, can effectively reduce end-face friction；Connecting rod pedals hole bushing and rod end yoke Isolation slipping ring is set between the bushing of hole, it is ensured that is not interfered end face；

（Four）, trick of the present invention make a concerted effort to do work big, natural speed is fast, and chain stress also increases therewith, and paired sprocket wheel combines It is special enhancing chain gauge size that, which there is the benefit of symmetrical ratchet symmetric chain and bicycle rear both sides, is easy to standard component From, and just in case the unilateral chain that broken, still can adhere to riding to maintenace point or destination, be unlikely to " to fall chain in the way Car is push after son " to walk, this point is especially especially important for single leg impedient people.

Brief description of the drawings

Fig. 1 is the stereo appearance figure of the present invention, and pedal pivot pin 84 is positioned at motion circumference highest point in figure.

Fig. 2 is state stereogram after the paired sprocket wheel 80 in Fig. 1 rotates 45 degree.

Fig. 3 is that the paired sprocket wheel 80 in Fig. 1 is rotated by 90 ° rear state stereogram.

Fig. 4 is state stereogram after the paired sprocket wheel 80 in Fig. 1 rotates 135 degree.

Fig. 5 is that the paired sprocket wheel 80 in Fig. 1 rotates state stereogram after 180 degree.

Fig. 6 is state stereogram after the paired sprocket wheel 80 in Fig. 1 rotates 225 degree.

Fig. 7 is state stereogram after the paired sprocket wheel 80 in Fig. 1 rotates 270 degree.

Fig. 8 is state stereogram after the paired sprocket wheel 80 in Fig. 1 rotates 315 degree.

Fig. 9 is the 70 independent stereogram of direction hand handle in Fig. 1.

Figure 10 is 12 independent stereogram of universal joint square.

Figure 11 is 11 independent stereogram of front-wheel crotch.

Figure 12 is the profile of power-assisted sliding sleeve 60 in Fig. 1.

Figure 13 is the K direction views in Figure 12.

Figure 14 is rack body 30 and the connection status stereogram of trailing wheel crotch 90 in Fig. 1.

Figure 15 is the 30 independent stereogram of rack body in Figure 14.

Figure 16 is the 90 independent stereogram of trailing wheel crotch in Figure 14.

Figure 17 is the 46 independent stereogram of power-assisted swing rod in Fig. 1.

Figure 18 is the 43 independent stereogram of power-assisted connecting rod in Fig. 1.

Figure 19 is the pull bar pendulum 42 independent stereograms of fork in Fig. 1.

Figure 20 is that the paired sprocket wheel 80 in Fig. 1 is connected to pedal pivot pin 84 and the combination stereogram of support axis 88.

Figure 21 is along the axial line of pedal pivot pin 84 and the profile of the axial line of support axis 88 in Figure 20.

Figure 22 is pedal pivot pin 84 and the paired connecting portion enlarged drawing of sprocket wheel 80 in Figure 21.

Figure 23 is the 45 independent stereogram of seat yaw bar in Fig. 1.

Figure 24 is the 50 independent stereogram of cushion assembly in Fig. 1.

Figure 25 is four different active force subregion schematic diagrames of the pedal pivot pin 84 on paired sprocket wheel 80.

Embodiment

A kind of universal joint turn to trick make a concerted effort can single leg riding bicycle, including front wheel 10, front-wheel crotch 11, from Driving trailing wheel 20, rack body 30, cushion assembly 50, direction hand handle 70, paired sprocket wheel 80 and trailing wheel crotch 90, front-wheel crotch 11 Including front fork hole seat 16 and front fork rotating shaft 13, the both sides of direction hand handle 70 are respectively fixed with front brake 72 and rear braking 73, square There is power-assisted vertical 76 to the lower end of hand handle 70；Front brake is connected to front brake lock 15 72 by preceding brake flexible cord, and front brake lock 15 is solid It is scheduled on described front-wheel crotch 11；Rear braking is connected to rear brake brake 25 73 by rear brake flexible cord, and rear brake brake 25 is fixed On described trailing wheel crotch 90；Described rack body 30 includes bracket upper beam 38 and support underbeam 37 and support batter post 29, the fixed support rear pillar 91 together with bracket upper beam 38 of support batter post 29, rack body 30 is also ined succession trailing wheel crotch 90, support There is entry 31 before support between upper beam 38 and support underbeam 37, there is support central axis hole between support underbeam 37 and support batter post 29 33, rotatable fixed support axis 88 on support central axis hole 33；As improvement：

Connected between the described upper end of front fork rotating shaft 13 and vertical 76 lower ends of power-assisted handle by universal joint part 77, after bicycle Taking turns 20 both sides has symmetrical ratchet 21, and the both sides of support axis 88 are all fixed with paired sprocket wheel 80, and the paired outside of sprocket wheel 80 is symmetrically set Pedal pivot pin 84 is equipped with, has symmetric chain 23 to be connected between paired sprocket wheel 80 and symmetrical ratchet 21；

Vertical 76 lower ends are fixedly connected universal joint top connection 71 by power-assisted, and the upper end of front fork rotating shaft 13 is fixedly connected universal Joint lower contact 17, the fixed universal joint square 12 of activity between universal joint lower contact 17 and universal joint top connection 71；

There are swing rod wears groove 36 and power-assisted support hole seat 34 on described bracket upper beam 38, have seat in swing rod on power-assisted swing rod 46 65 and swing rod lower fork 41 are enclosed in hole on hole 66 and swing rod, have swing rod lower base hole 68 on swing rod lower fork 41；Hole circle 65 passes through on swing rod Swing rod wears groove 36, swing rod pivot pin 44 pass through bore 66 in swing rod and bore in swing rod 66 are fixed on to described power-assisted support hole seat On 34；

There are sliding sleeve through hole 67 and a pair of sliding sleeve swing seats 62 on power-assisted sliding sleeve 60, there is sliding sleeve pin-and-hole 63 on sliding sleeve swing seat 62, it is sliding It is hinged on set pin-and-hole 63 and swing rod between hole circle 65 by sliding sleeve pivot pin 64, is between sliding sleeve through hole 67 and described power-assisted handle vertical 76 It is slidably matched；

There are connecting rod power-assisted hole 27 and connecting rod pedal hole 28, swing rod lower base hole 68 and connecting rod in the rear and front end of power-assisted connecting rod 43 respectively Pivot pin 40 is driven by hand to be hinged, be rotatable cooperation between connecting rod pedal hole 28 and pedal pivot pin 84 between power-assisted hole 27；

There is rear pillar seat support hole 35 the described upper end of support rear pillar 91, and pull bar pendulum 42 upper and lower ends of fork do not have entry 22 under pull bar With bore 24 on pull bar, there are seat slide 57, slide rail pin-and-hole 56 and seat pendulum fork 52 on seat yaw bar 45, on seat pendulum fork 52 There is a bolt hole 51；It is hinged between rear pillar seat support hole 35 and seat lever pin hole 54 by seat pivot pin 95；On seat bolt hole 51 and pull bar It is hinged between bore 24 by pull bar pivot pin 47, between entry 22 and pedal pivot pin 84 is rotatable cooperation under pull bar；

The rear end of seat yaw bar 45 can adjust fixed described cushion assembly 50.

Improved as further：Described cushion assembly 50 also includes seat chute 58 and chute pin-and-hole 53 and gravity seat There is backrest 59 chair 69, the rear end of gravity seat 69, and the angle between gravity seat 69 and backrest 59 is 115 degree to 135 Spend obtuse angle；To be slidably matched between seat chute 58 and seat slide 57, may be selected between chute pin-and-hole 53 and slide rail pin-and-hole 56 Alignment, is fixedly connected between chute pin-and-hole 53 and slide rail pin-and-hole 56 by grooved rail pivot pin 55.

Improved as further：There are hole seat 39 after support, the described lower end of support rear pillar 91 on described support batter post 29 There are bore 32 on spring；There are a pair of rear wheels bore 92 and spring lower seat hole 96 and a pair of back vent pendulum on described trailing wheel crotch 90 Arm 93, there is back vent arm aperture 94 in back vent swing arm 93, by described rear crotch pivot pin between hole seat 39 after back vent arm aperture 94 and support 99 can rotation connection, fixed spring buffer 49 between bore 32 and spring lower seat hole 96 on spring.

Improved as further：Described universal joint part 77 is by universal joint top connection 71 and universal joint lower contact 17 and universal joint square 12 formed, have horizontal pivot pin 87 and longitudinal pivot pin 81 on universal joint square 12, sold on joint Universal joint top connection 71 is fixed on power-assisted 76 lower ends are stood by 75, is had prong 79 on joint in universal joint top connection 71, is connect Have pin-and-hole 78 on joint on head on prong 79, on joint between pin-and-hole 78 and horizontal pivot pin 87 for can rotation fix；Sold under joint Universal joint lower contact 17 is fixed on the upper end of front fork rotating shaft 13 by 14, is had prong 19 under joint in universal joint lower contact 17, is connect Have pin-and-hole 18 under joint on the lower prong 19 of head, under joint between pin-and-hole 18 and longitudinal pivot pin 81 for can rotation fix.

Improved as further：The both sides of support axis 88 are symmetrically arranged with axis neck 26, during the outside of axis neck 26 has There is an axis stud 86 axle square column 82, the outer ends of axis square column 82 of both sides, axle with interior snap ring 61 be located at axis neck 26 among limit Axial displacement between support central axis hole 33 and support axis 88 processed；

There are centre of sprocket square hole 83 and sprocket wheel to pedal axle square hole 85 on described paired sprocket wheel 80, sprocket wheel is pedaled solid on axle square hole 85 Surely it is combined with pedal pivot pin 84；Centre of sprocket square hole 83 is engaged with axis square column 82, and axis nut 89 and axis stud 86 are tight Gu coordinating, axis nut 89 blocks paired sprocket wheel 80；

There is crank shaft shoulder block 481 on described pedal pivot pin 84, the end face outside of crank shaft shoulder block 481 has pedal fixing threaded hole 482, pedal fixing screws 428 are combined with pedal fixing threaded hole 482；Pedal fixing screws 428 and pedal fixing threaded hole 482 Step tread 48 is fixed on pedal pivot pin 84 by immovable fitting；The inner side of crank shaft shoulder block 481 have successively pedal bent axle face 483, Pedal square shaft section 485 and crank shaft stud 486；There is connecting rod to pedal hole bushing 828 on connecting rod pedal hole 28, connecting rod pedals hole bushing 828 Coordinate between endoporus and pedal bent axle face 483 are cylindrical for rotary sliding；There is pull bar entry bushing 822 under pull bar on entry 22, Coordinate between the endoporus of pull bar entry bushing 822 and pedal bent axle face 483 are cylindrical for rotary sliding；Isolate slipping ring 438 positioned at company Bar is pedaled between hole bushing 828 and pull bar entry bushing 822, for eliminating end face interference；The step of pedal bent axle face 483 and paired chain There is square hole back-up ring 484 between wheel 80, for reducing end-face friction；Sprocket wheel is pedaled axle square hole 85 and is enclosed in pedal square shaft section 485, pedal Pedal nut 468, pedal nut 468 and the immovable fitting of crank shaft stud 486 are combined with axle stud 486, by paired sprocket wheel 80 It is fixed in pedal square shaft section 485.

In embodiment, connecting rod pedals hole bushing 828 and pull bar entry bushing 822 entirety and uses self-lubricating bearing, power-assisted handle Vertical 76 and direction hand handle 70 are overall structure, and front brake is installed with direction hand handle 70 72 and rear braking 73；Voluntarily Chinese herbaceous peony wheel 10 is fixed among front fork hole seat 16, and front brake lock 15 is fixed on the front of front-wheel crotch 11, and front brake lock 15 is with before Brake by brake hose line being connected between 72；Bicycle rear 20 is fixed among trailing wheel bore 92, and rear brake brake 25 is consolidated It is scheduled on below trailing wheel crotch 90, rear brake brake 25 and rear braking by rear braking soft pipeline being connected between 73；Connect on universal joint First 71 and universal joint lower contact 17 and universal joint square 12 purchased to be overall, there is symmetrical spine the both sides of bicycle rear 20 Wheel 21, and two symmetrical direction of rotation of ratchet 21 are consistent, the symmetrical ratchet 21 of both sides is fixed on the flower of bicycle rear 20 in advance Drum both sides.

Number of assembling steps is divided into each part and assembles the splicing assembling between part respectively：

First, each part assembles as follows respectively：

（One）, front fork rotating shaft 13 pass through sliding sleeve through hole 67, universal joint lower contact 17 is fixedly connected on by pin 14 under joint The upper end of front fork rotating shaft 13；Power-assisted passes through entry 31 before support vertical 76, and pin 75 fixes universal joint top connection 71 on joint Power-assisted is connected to vertical 76 lower ends；

（Two）, hole circle 65 on the swing rod on power-assisted swing rod 46 passed through into swing rod wears groove 36 from bottom to top, bore 66 in swing rod It is aligned with power-assisted support hole seat 34, swing rod pivot pin 44 passes through bore 66 in power-assisted support hole seat 34 and swing rod, by bore in swing rod 66 can rotation be fixed on power-assisted support hole seat 34 on；Hole circle 65 on swing rod is placed among a pair of sliding sleeve swing seats 62, and swing rod Upper hole circle 65 is aligned with sliding sleeve pin-and-hole 63, and sliding sleeve pivot pin 64 passes through hole circle 65 and sliding sleeve pin-and-hole 63 on swing rod, and hole on swing rod is enclosed Between 65 and sliding sleeve pin-and-hole 63 can rotation be fixedly connected；Connecting rod power-assisted hole 27 on power-assisted connecting rod 43 is right with swing rod lower base hole 68 Standard, hand drives pivot pin 40 and passes through connecting rod power-assisted hole 27 and swing rod lower base hole 68 successively, by connecting rod power-assisted hole 27 and swing rod lower base hole 68 Between can rotation be connected；

（Three）, seat lever pin hole 54 be aligned with rear pillar seat support hole 35, seat pivot pin 95 passes through a lever pin hole 54 and rear pillar seat support Hole 35, by seat yaw bar 45 can rotation be fixed on support rear pillar 91；Bore on pull bar 24 is placed on a pair of seat pendulum forks 52 Centre, and bore 24 is aligned with seat bolt hole 51 on pull bar, pull bar pivot pin 47 passes through bore 24 and seat bolt hole 51 on pull bar, will On pull bar between bore 24 and seat bolt hole 51 can rotation be fixedly connected；According to cyclist's stature and custom, chute pin-and-hole is selected It is aligned between 53 and slide rail pin-and-hole 56 in correct position, by the company of fixation of grooved rail pivot pin 55 between chute pin-and-hole 53 and slide rail pin-and-hole 56 Connect；

（Four）, support axis 88 is put into support central axis hole 33, two axles are divided with interior snap ring 61 with jump ring special vice It is not put among the axis neck 26 of both sides, the axial displacement in axis hole 33 in the bracket of limit bracket axis 88；Respectively by two Only the extruding of centre of sprocket square hole 83 in pairs on sprocket wheel 80 is attached on the axis square column 82 of both sides, allows the sprocket wheel of both sides to pedal axle square hole 85 on same axial line, axis nut 89 and the immovable fitting of axis stud 86, paired sprocket wheel 80 is fixed on into support axis On 88；

（Five）, two symmetric chains 23 are shelved on paired sprocket wheel 80 in advance, the pedal on side pedal pivot pin 84 is bent Axial plane 483 passes through connecting rod successively pedals the endoporus of hole bushing 828 and the isolation endoporus of slipping ring 438 and the endoporus of pull bar entry bushing 822, will Square hole on square hole back-up ring 484 is enclosed in pedal square shaft section 485, and pedal square shaft section 485 is pressed into sprocket wheel and pedals axle square hole 85 It is interior, pedal nut 468 and the immovable fitting of crank shaft stud 486, the step of pedal bent axle face 483 is adjacent to square hole back-up ring 484 On paired sprocket wheel 80；The endoporus of step tread 48 is inserted on crank shaft pin 84, pedal fixing screws 428 and pedal fixing threaded hole 482 immovable fittings are fixed on step tread 48 is rotatable on pedal pivot pin 84；Similarly, the pedal pivot pin 84 of opposite side with pairs Sprocket wheel 80 is fixedly connected with mode and is same as above；

（Six）, back vent arm aperture 94 is aligned with hole seat after support 39, rear crotch pivot pin 99 passes through back vent arm aperture 94 and support Hole seat 39 afterwards, by back vent arm aperture 94 can rotation be fixed on after support in hole seat 39, pivot pin is by spring buffer 49 on buffer End can rotation be fixed on spring in bore 32, buffer lower shaft pin by the lower end of spring buffer 49 can rotation be fixed under spring In bore 96；Symmetric chain 23 is respectively disposed on symmetrical ratchet 21 and paired sprocket wheel 80, finished.

Ride feature：

（One）, in Fig. 1, when pedal pivot pin 84 is in the extreme higher position of motion circumference, the A areas in Figure 25, run into " the high-order dead point " of conventional bicycle, either with which, only single pin is located on pedal pivot pin 84 cyclist, can not all be urged to pair The rotation acting of sprocket wheel 80；At the same time, hold direction hand handle 70 by cyclist's both hands completely and do post-tensioning motion, drive power-assisted handle Vertical 76 do rotation clockwise with universal joint part 77 for fulcrum；Dynamic point sliding sleeve pivot pin 64 is that fulcrum does up time with swing rod pivot pin 44 Pin rotation, it is that fulcrum does rotation clockwise that dynamic point hand, which drives pivot pin 40 equally with swing rod pivot pin 44, can be high by power-assisted connecting rod 43 Effect pulls pedal pivot pin 84 to do rotate counterclockwise with support axis 88 for fulcrum together with paired sprocket wheel 80, is driven by symmetric chain 23 Symmetrical ratchet 21 drives vehicle band people to move ahead together together with the rolls forward of bicycle rear 20；

Dynamic point pull bar pivot pin 47 is driven by pull bar pendulum fork 42, is that fulcrum does rotation counterclockwise with seat pivot pin 95, seat is horizontal Swing rod 45 is also that fulcrum does rotation counterclockwise with seat pivot pin 95 together with cushion assembly 50, has given cyclist is next to stand up to act Strong boosting；

（Two）, in Fig. 2, when pedal pivot pin 84 is in the front position on the upper side of motion circumference, A areas in Figure 25 with Near B areas have a common boundary, cyclist relies on the boosting of both hands pulling force combination cushion assembly 50, acts on body gravity by single pin Pedal pivot pin 84, by means of the reaction force of backrest 59,

Cyclist's list leg also has a component forward while downward acting, more preferable to drive pedal pivot pin 84 together with paired Sprocket wheel 80 is that fulcrum does rotate counterclockwise with support axis 88；Meanwhile cyclist's both hands hold direction hand handle 70 and are also doing post-tensioning Motion, dynamic point sliding sleeve pivot pin 64 are that fulcrum does rotation clockwise with swing rod pivot pin 44, and dynamic point hand drives pivot pin 40 equally with pendulum shaft Pin 44 is that fulcrum does rotation clockwise, makes a concerted effort to drive pedal pivot pin 84 together with paired sprocket wheel 80 with support by power-assisted connecting rod 43 Axle 88 is that fulcrum does rotate counterclockwise, drives symmetrical ratchet 21 to be driven together with the rolls forward of bicycle rear 20 by symmetric chain 23 Vehicle band people is moved ahead together, realize the smooth handing-over for switching to body gravity acting by both hands acting；

Dynamic point pull bar pivot pin 47 continues to be driven by pull bar pendulum fork 42, is that fulcrum does rotation counterclockwise, seat with seat pivot pin 95 Chair yaw bar 45 is also that fulcrum does rotation counterclockwise with seat pivot pin 95 together with cushion assembly 50；

（Three）, in Fig. 3, when pedal pivot pin 84 is in the forefront position of motion circumference, the B areas in Figure 25, help Power connecting rod 43 also runs into " the front end dead point " of " toggle "；It is right by power-assisted connecting rod 43 that both hands hold direction hand handle 70 Active force on pedal pivot pin 84, it can not be urged to rotate sprocket wheel 80 and do work；At the same time, cyclist's gravity from up to down Efficiency highest on pedal pivot pin 84 is acted on by single pin, driving pedal pivot pin 84 is with support axis 88 together with paired sprocket wheel 80 Fulcrum does rotate counterclockwise, drives symmetrical ratchet 21 to drive vehicle together with the rolls forward of bicycle rear 20 by symmetric chain 23 Band people moves ahead together；Dynamic point sliding sleeve pivot pin 64 is fulcrum with swing rod pivot pin 44, in changing into pendulum counterclockwise by rotation clockwise The flex point turned；It equally with swing rod pivot pin 44 is fulcrum that dynamic point hand, which drives pivot pin 40, in changing into pendulum counterclockwise by rotation clockwise The flex point turned；

Dynamic point pull bar pivot pin 47 continues to be driven by pull bar pendulum fork 42, is that fulcrum does rotation counterclockwise, seat with seat pivot pin 95 Chair yaw bar 45 is also that fulcrum does rotation counterclockwise with seat pivot pin 95 together with cushion assembly 50；

（Four）, in Fig. 4, when pedal pivot pin 84 is in the front position on the lower side of motion circumference, B areas in Figure 25 with Near C areas intersection, cyclist's gravity also is continuing to drive pedal pivot pin 84 to connect by the single pin being placed on pedal pivot pin 84 Rotate counterclockwise is done for fulcrum with support axis 88 with paired sprocket wheel 80, meanwhile, cyclist's both hands transfer to hold direction hand handle 70 Start push before doing to move, driving power-assisted is that fulcrum does rotation counterclockwise with universal joint part 77 vertical 76；Dynamic point sliding sleeve pivot pin 64 do rotation counterclockwise with swing rod pivot pin 44 for fulcrum, and it is that fulcrum is done counterclockwise that dynamic point hand, which drives pivot pin 40 equally with swing rod pivot pin 44, Rotation, make a concerted effort to drive pedal pivot pin 84 to do counterclockwise for fulcrum with support axis 88 together with paired sprocket wheel 80 by power-assisted connecting rod 43 Rotation, symmetrical ratchet 21 is driven together with the rolls forward of bicycle rear 20 by symmetric chain 23, drives vehicle band people to move ahead together, Realize the smooth handing-over for switching to both hands acting by body gravity acting；

Dynamic point pull bar pivot pin 47 continues to be driven by pull bar pendulum fork 42, is that fulcrum does rotation counterclockwise, seat with seat pivot pin 95 Chair yaw bar 45 is also that fulcrum does rotation counterclockwise with seat pivot pin 95 together with cushion assembly 50；

（Five）, in Fig. 5, when pedal pivot pin 84 is in the extreme lower position of motion circumference, the C areas in Figure 25, run into " the low level dead point " of conventional bicycle, either with which, only single pin is located on pedal pivot pin 84 cyclist, can not all be urged to pair The rotation acting of sprocket wheel 80；At the same time, hold push before direction hand handle 70 continues to do by cyclist's both hands completely to move, dynamic point is slided Set pivot pin 64 is that fulcrum does rotation counterclockwise with swing rod pivot pin 44, and dynamic point hand is driven pivot pin 40 and equally done with swing rod pivot pin 44 for fulcrum Rotation counterclockwise, by power-assisted connecting rod 43 can efficiently promote pedal pivot pin 84 together with paired sprocket wheel 80 with support axis 88 for branch Point does rotate counterclockwise, drives symmetrical ratchet 21 to drive vehicle band together with the rolls forward of bicycle rear 20 by symmetric chain 23 People moves ahead together；

Dynamic point pull bar pivot pin 47 is in the flex point that rotation clockwise is changed into by rotation counterclockwise；Seat yaw bar 45 together with Cushion assembly 50 is also at the flex point that rotation clockwise is changed into by rotation counterclockwise, is easy to ensuing lower sit of cyclist to move Make；

（Six）, in Fig. 6, when pedal pivot pin 84 is in the rear position on the lower side of motion circumference, C areas in Figure 25 with D areas have a common boundary nearby, cyclist by seat under both hands thrust combination upper body gravity on cushion assembly 50, by means of backrest 59 So that body weight arm produces bigger clockwise torque, driving seat yaw bar 45 is that fulcrum does pendulum clockwise with seat pivot pin 95 Turn；Starting " above carrying " by pull bar pendulum fork 42, to pull pedal pivot pins 84 together with paired sprocket wheel 80 to be that fulcrum is done with support axis 88 inverse Hour hands rotate；Meanwhile cyclist's both hands continue to hold direction hand handle 70 that push is moved also before doing, dynamic point sliding sleeve pivot pin 64 is with swing rod Pivot pin 44 is that fulcrum does rotation counterclockwise, and it is that fulcrum does rotation counterclockwise that dynamic point hand, which drives pivot pin 40 equally with swing rod pivot pin 44, is led to Power-assisted connecting rod 43 is crossed to make a concerted effort to drive pedal pivot pin 84 to do rotate counterclockwise with support axis 88 for fulcrum together with paired sprocket wheel 80, by Symmetric chain 23 drives symmetrical ratchet 21 together with the rolls forward of bicycle rear 20, drives vehicle band people to move ahead together, realize by Both hands, which do work, switchs to the smooth handing-over of upper body gravity acting；

（Seven）, in Fig. 7, when pedal pivot pin 84 is in the rearmost position of motion circumference, the D areas in Figure 25, help Power connecting rod 43 also runs into " the rear end dead point " of " toggle "；It is right by power-assisted connecting rod 43 that both hands hold direction hand handle 70 Active force on pedal pivot pin 84, it can not be urged to rotate sprocket wheel 80 and do work；At the same time, cyclist's upper body Action of Gravity Field exists On cushion assembly 50, driving seat yaw bar 45 is that fulcrum does rotation clockwise with seat pivot pin 95；It is high by pull bar pendulum fork 42 Effect pulls pedal pivot pin 84 to do rotate counterclockwise with support axis 88 for fulcrum together with paired sprocket wheel 80；Driven by symmetric chain 23 Symmetrical ratchet 21 drives vehicle band people to move ahead together together with the rolls forward of bicycle rear 20；

Dynamic point sliding sleeve pivot pin 64 is fulcrum with swing rod pivot pin 44, in changing into turning for rotation clockwise by rotation counterclockwise Point；It equally with swing rod pivot pin 44 is fulcrum that dynamic point hand, which drives pivot pin 40, in changing into turning for rotation clockwise by rotation counterclockwise Point；

（Eight）, in Fig. 8, when pedal pivot pin 84 is in the rear position on the upper side of motion circumference, D areas in Figure 25 with Near A areas intersection, cyclist's upper body gravity is also acted against on cushion assembly 50, continues to drive seat yaw bar 45 with seat axle Pin 95 is that fulcrum does rotation clockwise；Pedal pivot pin 84 is pulled on together with paired sprocket wheel 80 with support by pull bar pendulum fork 42 Axle 88 is that fulcrum does rotate counterclockwise；Meanwhile cyclist's both hands transfer to hold direction hand handle 70 and start to do post-tensioning motion, dynamic point is slided Set pivot pin 64 is that fulcrum does rotation clockwise with swing rod pivot pin 44, and dynamic point hand is driven pivot pin 40 and equally done with swing rod pivot pin 44 for fulcrum Rotation clockwise, by power-assisted connecting rod 43 start to make a concerted effort to drive pedal pivot pin 84 together with paired sprocket wheel 80 with support axis 88 for branch Point does rotate counterclockwise, drives symmetrical ratchet 21 to drive vehicle band together with the rolls forward of bicycle rear 20 by symmetric chain 23 People moves ahead together, realizes the smooth handing-over for switching to both hands acting by body gravity acting；The final motion for realizing pedal pivot pin 84 Any position of circumference can the paired sprocket wheel 80 of high efficiency drive rotate.

（Nine）, when needing to turn in ride, both hands, which are held direction hand handle 70 and reversed, drives power-assisted centered on vertical Rotation, drives front fork rotating shaft 13 to do swinging motion in entry 31 before support, then front-wheel crotch by universal joint part 77 11 drive front wheels 10 make rotation, realize turning purpose of riding.Due to sliding sleeve through hole 67 and described power-assisted vertical 76 it Between to be slidably matched, power-assisted will not drive the rotation of power-assisted sliding sleeve 60 when being reversed vertical 76；Moreover, before and after power-assisted is done vertical 76 During rotation, dynamic power-assisted sliding sleeve 60 can axially move relative to power-assisted vertical 76, and it is with sliding sleeve pivot pin 64 to move power-assisted sliding sleeve 60 Centered on make also as power-assisted swing rod 46 to do front and rear rotation centered on swing rod pivot pin 44 while rotation up and down.

Bicyclist gives full play to Whole Body strength, and body is uprightly reaching whole body fortune with replacing between squatting down during cycling It is dynamic；Meanwhile " the low level dead point " and " high-order dead point " that both hands alternately push away, draw power-assisted to eliminate conventional bicycle, both hands alternately push away Draw power-assisted to combine upright, sitting posture alternating all-around exercises, realize no dead-centre motion continuous doing work effect, reach and efficiently quickly ride Purpose.

The above-mentioned substantive distinguishing features of the present invention, bring following progressive effect：

（One）, the upper end of front fork rotating shaft 13 and power-assisted between vertical 76 lower ends by universal joint part 77, with reference to power-assisted sliding sleeve There are sliding sleeve through hole 67 and described power-assisted on 60 being to be slidably matched between standing 76, power-assisted swing rod 46 can be driven together with swing rod Fork 41 with swing rod pivot pin 44 be fulcrum do rotation clockwise or counterclockwise, by power-assisted connecting rod 43 drive pedal pivot pin 84 together with into Sprocket wheel 80 is done with support axis 88 for fulcrum and rotated, wound is played at " the high-order dead point " and " low level dead point " of conventional bicycle The property made acts on；Set universal joint part 77 can realize cyclist's both hands hold direction hand handle 70 pushed away before doing or post-tensioning motion Meanwhile change front-wheel left and right turn at any time will not be hindered, realize both hands and participate in acting；Especially with body Action of Gravity Field in Cushion assembly 50 so that seat yaw bar 45 is that fulcrum does rotation counterclockwise with seat pivot pin 95 together with cushion assembly 50, then Drive pull bar pendulum fork 42 makes " above proposing " action, and dynamic pedal pivot pin 84 is done inverse together with paired sprocket wheel 80 with support axis 88 for fulcrum Hour hands rotate；Overcome the pedal Board position of conventional bicycle two and have to differ by 180 degree, it is necessary to there is second underfooting to step on to make up One pin can not exert a force the defects of above carrying two step tread plates, alternately be exerted a force without two pin, this just provides one kind for single leg personage The possibility of riding bicycle；

（Two）, seat yaw bar 45 with seat pivot pin 95 be fulcrum do rotation clockwise or counterclockwise, pass through pull bar pendulum fork 42 pulling pedal pivot pins 84 are that fulcrum does up rotation with support axis 88 together with paired sprocket wheel 80；Pass through with reference to cyclist's gravity Single pin is acted on pedal pivot pin 84, and driving pedal pivot pin 84 is that fulcrum does descending rotation with support axis 88 together with paired sprocket wheel 80 Turn, the smooth handing-over of body erect and squat down gravity and both hands thrust and pulling force, make a concerted effort to give pedal pivot pin 84 and drive in pairs Sprocket wheel 80 rotates, and not only realizes the purpose for improving riding speed, the pedal pivot pin 84 of both sides is located on same axial line, also thorough Bottom eliminates double swerve of the standard bicycle caused by left and right pin is alternately exerted oneself；And single leg uprightly squatted down with buttocks replace into OK, with reference to both hands thrust and the perfect combination of pulling force, exercising abdominal muscles and the body-building effect of all-around exercises have also been reached；

（Three）, pedal pivot pin 84 pedal bent axle face 483 is set between crank shaft shoulder block 481 and pedal square shaft section 485, even Bar pedal the endoporus of hole bushing 828 and the endoporus of pull bar entry bushing 822 with pedal bent axle face 483 it is cylindrical between match somebody with somebody for rotary sliding Close, ride easily smooth；There is square hole back-up ring 484 between the step of pedal bent axle face 483 and paired sprocket wheel 80, can effectively reduce end face Friction；Connecting rod, which is pedaled to set between hole bushing 828 and pull bar entry bushing 822, isolates slipping ring 438, it is ensured that does not interfere end face；

（Four）, trick of the present invention make a concerted effort to do work big, natural speed is fast, and chain stress also increases therewith, the paired knot of sprocket wheel 80 It is special enhancing chain gauge size that, which there is the benefit of symmetrical ratchet 21 conjunction symmetric chain 23 and the both sides of bicycle rear 20, just Select in standard component, and just in case the unilateral chain that broken, still can adhere to riding to maintenace point or destination, be unlikely on the way Car is push after upper " chain-taking " to walk, this point is especially especially important for single leg impedient people.

Claims (4)

1. a kind of universal joint turn to trick make a concerted effort can single leg riding bicycle, including front wheel (10), front-wheel crotch (11), Bicycle rear (20), rack body (30), cushion assembly (50), direction hand handle (70), paired sprocket wheel (80) and trailing wheel crotch (90), front-wheel crotch (11) includes front fork hole seat (16) and front fork rotating shaft (13), before direction hand handle (70) both sides are respectively fixed with (72) and rear braking (73), there is power-assisted direction hand handle (70) lower end vertical (76) for brake；(72) are passed through preceding brake by front brake Flexible cord is connected to front brake lock (15), and front brake lock (15) is fixed on described front-wheel crotch (11)；Rear braking is logical (73) Later brake flexible cord is connected to rear brake brake (25), and rear brake brake (25) is fixed on described trailing wheel crotch (90)；Described branch There are entry (31) and support central axis hole (33) before support on frame body (30), rotatable fixed support on support central axis hole (33) Axis (88)；It is characterized in that：

It is connected between described front fork rotating shaft (13) upper end and vertical (76) lower end of power-assisted handle by universal joint part (77), bicycle There is symmetrical ratchet (21) trailing wheel (20) both sides, and support axis (88) both sides are all fixed with paired sprocket wheel (80), paired sprocket wheel (80) outside is symmetrically arranged with pedal pivot pin (84), there is symmetric chain (23) phase between paired sprocket wheel (80) and symmetrical ratchet (21) Even；Vertical (76) lower end is fixedly connected universal joint top connection (71) by described power-assisted, and front fork rotating shaft (13) upper end, which is fixed, to be connected Then universal joint lower contact (17), activity fixed ten thousand between universal joint lower contact (17) and universal joint top connection (71) To joint square (12)；

There are swing rod wears groove (36) and power-assisted support hole seat (34) on bracket upper beam (38), power-assisted swing rod has bore in swing rod on (46) (66) and on swing rod (65) and swing rod lower fork (41) are enclosed in hole, have swing rod lower base hole (68) on swing rod lower fork (41)；Hole on swing rod Circle (65) passes through swing rod wears groove (36), and swing rod pivot pin (44) passes through bore in swing rod (66) and is fixed on bore in swing rod (66) In described power-assisted support hole seat (34)；There are sliding sleeve through hole (67) and a pair of sliding sleeve swing seats (62), sliding sleeve on power-assisted sliding sleeve (60) There is sliding sleeve pin-and-hole (63) on swing seat (62), it is be hinged by sliding sleeve pivot pin (64) between hole circle (65) on sliding sleeve pin-and-hole (63) and swing rod, It is to be slidably matched between sliding sleeve through hole (67) and described power-assisted handle vertical (76)；There is connecting rod power-assisted connecting rod (43) rear and front end respectively Power-assisted hole (27) and connecting rod pedal hole (28), pivot pin (40) hinge is driven by hand between swing rod lower base hole (68) and connecting rod power-assisted hole (27) Connect, be rotatable cooperation between connecting rod pedal hole (28) and pedal pivot pin (84)；

There is a rear pillar seat support hole (35) support rear pillar (91) upper end, pull bar pendulum fork (42) upper and lower ends do not have entry under pull bar (22) and Bore (24) on pull bar, there are seat slide (57), slide rail pin-and-hole (56) and seat pendulum fork (52), seat on seat yaw bar (45) There is a bolt hole (51) on pendulum fork (52)；It is be hinged by seat pivot pin (95) between rear pillar seat support hole (35) and seat lever pin hole (54)； It is be hinged by pull bar pivot pin (47) between bore (24) on seat bolt hole (51) and pull bar, entry (22) and pedal pivot pin under pull bar (84) it is rotatable cooperation between；

Seat yaw bar (45) rear end can adjust fixed described cushion assembly (50).

2. a kind of universal joint according to claim 1 turn to trick make a concerted effort can single leg riding bicycle, it is characterized in that：

Described cushion assembly (50) also includes seat chute (58) and chute pin-and-hole (53) and gravity seat (69), gravity seat There is backrest (59) chair (69) rear end, and the angle between gravity seat (69) and backrest (59) is 115~135 degree blunt Angle；, can between chute pin-and-hole (53) and slide rail pin-and-hole (56) to be slidably matched between seat chute (58) and seat slide (57) Selection alignment, is fixedly connected between chute pin-and-hole (53) and slide rail pin-and-hole (56) by grooved rail pivot pin (55).

3. a kind of universal joint according to claim 1 turn to trick make a concerted effort can single leg riding bicycle, it is characterized in that：

Described universal joint part (77) is by universal joint top connection (71) and universal joint lower contact (17) and Universal connector Head square (12) is formed, and is had horizontal pivot pin (87) and longitudinal pivot pin (81) on universal joint square (12), is sold (75) on joint Universal joint top connection (71) is fixed on into power-assisted has prong on joint vertical (76) lower end, universal joint top connection on (71) (79), there is pin-and-hole on joint (78) on joint on prong (79), be to put between pin-and-hole (78) and horizontal pivot pin (87) on joint Turn to fix；(14) are sold under joint universal joint lower contact (17) is fixed on front fork rotating shaft (13) upper end, universal joint lower contact (17) there is prong under joint (19) on, there is pin-and-hole under joint (18) under joint on prong (19), pin-and-hole (18) and longitudinal direction under joint Between pivot pin (81) for can rotation fix.

4. a kind of universal joint according to claim 1 turn to trick make a concerted effort can single leg riding bicycle, it is characterized in that：

Support axis (88) both sides are symmetrically arranged with axis neck (26), there is axis square column (82) on the outside of axis neck (26), and two Axis square column (82) outer end of side has axis stud (86), axle interior snap ring (61) to limit branch among being located at axis neck (26) Axial displacement between frame central axis hole (33) and support axis (88)；There is centre of sprocket square hole (83) on described paired sprocket wheel (80) Axle square hole (85) is pedaled with sprocket wheel, and sprocket wheel pedals secure fit on axle square hole (85) and pedal pivot pin (84)；Centre of sprocket square hole (83) It is engaged with axis square column (82), axis nut (89) and axis stud (86) immovable fitting, axis nut (89) block in pairs Sprocket wheel (80)；

There is crank shaft shoulder block (481) on described pedal pivot pin (84), crank shaft shoulder block (481) end face outside has pedal to fix spiral shell Hole (482), pedal fixing screws (428) are combined with pedal fixing threaded hole (482)；Pedal fixing screws (428) and pedal Step tread (48) is fixed on pedal pivot pin (84) by fixing threaded hole (482) immovable fitting；On the inside of crank shaft shoulder block (481) according to It is secondary to have pedal bent axle face (483), pedal square shaft section (485) and crank shaft stud (486)；There is connecting rod to pedal on connecting rod pedal hole (28) Hole bushing (828), connecting rod pedal hole bushing (828) endoporus and pedal bent axle face (483) it is cylindrical between for rotary sliding coordinate；Draw There is pull bar entry bushing (822) under bar on entry (22), pull bar entry bushing (822) endoporus and pedal bent axle face (483) are cylindrical Between for rotary sliding coordinate；Isolation slipping ring (438) be located at connecting rod pedal hole bushing (828) and pull bar entry bushing (822) it Between, for eliminating end face interference；There is square hole back-up ring (484) between pedal bent axle face (483) step and paired sprocket wheel (80), be used for Reduce end-face friction；Sprocket wheel is pedaled axle square hole (85) and is enclosed in pedal square shaft section (485), and crank shaft stud is combined with pin on (486) Nut (468), pedal nut (468) and crank shaft stud (486) immovable fitting are pedaled, paired sprocket wheel (80) is fixed on pedal side On shaft part (485).