CN102975810A

CN102975810A - Sport and leisure bicycle

Info

Publication number: CN102975810A
Application number: CN2012105577603A
Authority: CN
Inventors: 包长仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-20
Filing date: 2012-12-20
Publication date: 2013-03-20

Abstract

The invention discloses a sport and leisure bicycle, which can be widely applied to a park, a scenic area, an entertainment place and other places, and mainly comprises a frame, a front fork rod, a rocker, a front wheel, a rear wheel, a rear wheel driving component, a rear wheel braking component and the like. The sport and leisure bicycle is characterized in that the rocker is shaken back and forth by a hand, and the rear wheel is driven by the rear wheel driving device to roll forwards in a single direction to implement the forward moving of the bicycle. The rear wheel driving device comprises a driving rope which runs easily and reliably, a driving chain, a reset spring, a direction wheel, a plurality of guide wheels and the like; the rocker can be further provided with a resistance spring and other structures, and upper limb muscles can be exercised comprehensively and effectively by shaking and drawing the rocker; and meanwhile, the frame is additionally provided with a pedal board which slides back and forth along the frame to exercise lower limb muscles. The sport and leisure bicycle has the advantages of small volume, simplicity in operation and the like, and fully meets the needs of daily traveling, entertainment and exercise and fitness.

Description

Sport Activity Vehicle

Technical field

The present invention relates to a kind of RV recreational vehicle structure, specifically refer to a kind of Sport Activity Vehicle for amusement and recreation, sport and body-building.

Background technology

China is bicycle big country, up to the present, and the vehicle that bicycle or people commonly use.As everyone knows, the mode of riding of bicycle mainly is exactly that the people is sitting on the vehicle seat, hold the handlebar controlling party to, then trample forward stretcher with both feet and make circular movement, and through the rotation of driving chain drive driving flywheel, be coaxial mounted with rear crop rotation and drive flywheel, the action of flywheel band is unidirectional rolls forward so trailing wheel is driven, thereby so that bicycle move forward.

Along with improving constantly of living standard, bicycle does not just use as a kind of vehicle yet, and people are also its instrument as a kind of amusement and recreation, sport and body-building.But owing to be subjected to structural limitations, the use of bicycle is mainly reflected in the exercise of lower limb muscles, and is considerably less for the exercise of muscle of upper extremity; In addition, because vehicle seat is higher, for some healthy not good people, riding bicycle is undoubtedly a kind of thing of difficulty.

Disclosed China Patent No. is 200510021759.9 " self-operated pedal cycle ", the structure of its disclosure mainly is to be made of vehicle frame, front fork stem, front-wheel, trailing wheel, back-wheel drive assembly and rear wheel brake assembly etc., and it also is a kind of smaller and more exquisite scooter arrangements of volume of coming from the bicycle evolution.Wherein, the back-wheel drive assembly mainly alternately tramples to drive the trailing wheel operation by two pedals that are installed in top of frame, so only need stand on two pedals of vehicle frame when using, then hold the handlebar controlling party and can move forward to also alternately trampling two pedals.Although this scooter than standard bicycle volume smaller and more exquisite and also without the design of saddle construction so that upper and lower scooter is very convenient, but, the exercise of this scooter also is confined to lower limb muscles, also is difficult to perform physical exercise for muscle of upper extremity, uses to have certain defective.

Summary of the invention

Technical matters to be solved by this invention is to overcome the defective of prior art and the Sport Activity Vehicle that a kind of volume is small and exquisite, simple to operate, can effectively temper muscle of upper extremity and lower limb muscles is provided.

Technical matters of the present invention is achieved through the following technical solutions:

A kind of Sport Activity Vehicle, comprise vehicle frame, front fork stem, front-wheel, trailing wheel, back-wheel drive assembly and rear wheel brake assembly, described front-wheel rolls and is arranged on the front fork stem front end, this front fork stem is rotatably installed in the vehicle frame front portion, described trailing wheel rolls and is arranged on the vehicle frame rear portion, this trailing wheel is provided with coaxial mounted driving flywheel, on the described front fork stem rocking bar is installed, and this rocking bar middle part is articulated and connected on the front fork stem top; Described back-wheel drive assembly comprises driving rope, driving chain and retracing spring, the described driving end of restricting is connected to the rocking bar bottom, the driving rope other end passes steering wheel, a plurality of track adjusting wheel is connected with driving chain one end, the reel flywheel of overdriving of this driving chain other end connects retracing spring, and this retracing spring is connected on the vehicle frame.

Described vehicle frame is provided with and rotates the duplex drive wheel of installing, hinge wheel and minor sprocket that this duplex drive wheel is conjoined structure, or be hinge wheel and the doffer of conjoined structure; Hinge wheel and minor sprocket that described duplex drive wheel is conjoined structure, this hinge wheel and driving between the flywheel are in transmission connection as chain, and the driving chain minor sprocket of reeling connects retracing spring; Hinge wheel and doffer that described duplex drive wheel is conjoined structure are in transmission connection as chain between this hinge wheel and the driving flywheel, drive the rope direct winfing and cross doffer connection retracing spring.

Described bottom of frame is provided with adjusting part, adjusting part comprises the installation sleeve that is arranged on bottom of frame and axially is movably arranged on the interior screw rod of installation sleeve, described screw rod is provided with two regulating nuts that are threaded, these two regulating nuts are separately positioned on the installation sleeve two ends, and described retracing spring is connected on the screw rod.

Described rear wheel brake assembly comprises brake pedal, braking rope and brake shoes, described brake pedal middle part is articulated and connected on vehicle frame, expose on this brake pedal top, the bottom connects braking rope, this braking rope connects brake shoes, also is provided with the retracing spring that is connected between described brake pedal bottom and the vehicle frame.

Described steering wheel is installed in the wheel seat, and installation shaft is extended in this wheel seat bottom, and described vehicle frame is provided with bearing seat, in this bearing seat bearing is installed, and described installation shaft is installed in this bearing.

The structure that is articulated and connected on described rocking bar and front fork stem top is to be provided with free bearing on the front fork stem top, and described rocking bar is articulated and connected in this free bearing, and described front fork stem top also is provided with ramp structure, and this ramp structure is towards the rocking bar lopsidedness.

The structure that is articulated and connected on described rocking bar and front fork stem top is to be provided with free bearing on the front fork stem top, be provided with hinge in this free bearing, free bearing is provided with hard-wired upper spring seat outward, described rocking bar is provided with the long slot bore that passes for hinge, this long slot bore extends setting along the length direction of rocking bar, also is provided with the lower spring cup fixing with rocking bar on the rocking bar; Be provided with between described upper spring seat and the lower spring cup and make the upper and lower movable adjust bar of installing, this adjust bar two ends coupling nut, adjust bar is set with resistance spring outward, and the two ends difference pushing tow of this resistance spring is on upper and lower spring perch.

Described front fork stem is provided with the stabilizer rod that level is installed, this stabilizer rod rear end is passed front fork stem and is provided with the block nut that is threaded, this block nut is fixed on the front fork stem, and the long slot bore that described stabilizer rod front end passes on the rocking bar exposes, and is provided with limiting stopper at the stabilizer rod leading section.

The step tread plate of doing forward and backward slippage along vehicle frame is installed on the described vehicle frame, this step tread plate bottom is provided with front forked frame and the rear crotch to downward-extension, described front forked frame fork is located at the vehicle frame both sides, this front forked frame bottom fixes with braking rope, described rear crotch fork is located at the vehicle frame both sides, be respectively equipped with two pairs of pulleys on this rear crotch, corresponding being respectively equipped with in the vehicle frame two sides for every pair of pulley made the equipped chute of slippage.

On the described vehicle frame pedal is installed, on this pedal vehicle seat is set, and at the vehicle seat rear portion back of the body bar is installed, this back of the body bar bottom is articulated and connected on the strut of vehicle seat bottom, the top is provided with the flexible massage column that is articulated and connected, and also is provided with extension spring between back of the body bar and strut.

Compared with prior art, the invention provides a kind of mainly by before the hand work, back and forth shake afterwards rocking bar, and drive through back wheel driving gear that trailing wheel is unidirectional to roll forward, thereby realize the RV recreational vehicle structure that vehicle moves forward, back wheel driving gear wherein is laborsaving by operation, failure-free drives rope, driving chain, retracing spring, the formation such as steering wheel and a plurality of track adjusting wheels, the structures such as resistance spring also can be set on the rocking bar, shaking and stretching and to temper comprehensively and effectively muscle of upper extremity by rocking bar, simultaneously, have additional on the vehicle frame before the vehicle frame work, the step tread plate of rear slippage, to temper lower limb muscles, it is small and exquisite that this Sport Activity Vehicle has volume, simple operation and other advantages has also fully satisfied go off daily, the needs of amusement and recreation and sport and body-building.

Description of drawings

Fig. 1 is structural representation of the present invention (wherein a kind of version).

Fig. 2 is the birds-eye view of Fig. 1.

Fig. 3 is the A-A cutaway view of Fig. 1.

Fig. 4 is the use view of Fig. 1.

Fig. 5 is the structural representation of adjusting part.

Fig. 6 is the structural representation of rear wheel brake assembly.

Fig. 7 is the structural representation of long slot bore on rocking bar.

Fig. 8 is the connection structure scheme drawing of duplex drive wheel.

Fig. 9 is structural representation of the present invention (another kind of version).

Figure 10 is the B-B cutaway view of Fig. 9.

Figure 11 is step tread plate mounting structure scheme drawing on vehicle frame.

Figure 12 is that the C of Figure 11 is to view.

Figure 13 is the D-D cutaway view of Figure 11.

The specific embodiment

The below will elaborate to the embodiment of the invention by above-mentioned accompanying drawing again.

Such as Fig. 1 ~ shown in Figure 13,1. vehicle frame, 2. track adjusting wheel, 3. steering wheel, 4. drive rope, 5. front fork stem, 6. block nut, 7. ramp structure, 8. rocking bar, 9. free bearing, 10. stabilizer rod, 11. limiting stopper, 12. axle sleeve, 13. front-wheel, 14. screw rod, 15. installation sleeve, 16. regulating nut, 17. retracing spring, 18. driving chain, 19. duplex drive wheel, 20. driving flywheel, 21. trailing wheel, 22. brake pedal, 23. pedal, 24. wheel seat, 25. installation shaft, 26. bearing, 27. bearing seat, 28. fixed pulley, 29. braking rope, 30. long slot bore, 31. hinge, 32. resistance spring, 33. step tread plate, 34. rear crotch, 35. pulley, 36. chute, 37. strut, 38. vehicle seat, 39. front forked frame, 40. back of the body bar, 41. flexible massage column, 42. extension spring, 43. upper spring seat, 44. adjust bar, 45. lower spring cup, 46. pressing plate.

Sport Activity Vehicle, such as Fig. 1, Fig. 2, shown in Figure 4, relate to a kind of vehicle that can be used for amusement and recreation, sport and body-building, mainly be to be consisted of by vehicle frame 1, front fork stem 5, rocking bar 8, front-wheel 13, trailing wheel 21, back-wheel drive assembly and rear wheel brake assembly etc., present embodiment is take the view left side as front part of vehicle, and the view right side is that vehicle rear is described.

Described vehicle frame 1 is the steel framework structure, in the vehicle frame front portion front fork stem 5 is installed; Described front fork stem side is " ┛ " type, should be consisted of by vertical rod and two horizon bars that are fork-shaped in a tubular form by " ┛ " type, after this vertical rod vertically passes the axle sleeve 12 that is welded on vehicle frame 1 front portion, form the rotation mounting structure with vehicle frame, the mounting structure of this mounting means and standard bicycle front portion is similar, and front-wheel 13 is installed in the fork-shaped of horizon bar, this front-wheel is hinged on front fork stem 5 front ends through front wheel spindle and rolls to form, can drive front-wheel 13 rotations so rotate front fork stem 5, thereby realize turning round of vehicle, and the working direction of control vehicle.

The vertical rod top of described front fork stem 5 is welded with " U " type free bearing 9; Described rocking bar 8 is " T " font, this rocking bar middle part is articulated and connected in free bearing 9 by hinge 31, and top and bottom are unsettled, and the top is handlebar, so undertaken forward and backwardly back and forth shaking by gripping handlebar, this rocking bar 8 namely can form swinging rotary around the hinged point on the free bearing 9.Simultaneously, the vertical rod top of this front fork stem 5 also is designed with ramp structure 7, and ramp structure tilts towards rocking bar 8 one sides, can prevent effectively that by ramp structure 7 the vertical rod top from touching and hinder shaking backward of rocking bar 8, perhaps larger by with free bearing 9 width designs, vertical rod top height is arranged on rocking bar 8 and the hinged below that free bearing 9 is hinged, then also can realizes the aforesaid operations purpose.

Also be provided with a horizontally disposed stabilizer rod 10 on the vertical rod of described front fork stem 5, this stabilizer rod rear end is passed the vertical rod rear thread and is connected with two block nuts 6, one of them block nut of adjacent vertical rod directly is weldingly fixed on the vertical rod, can drive stabilizer rod 10 and does forward and backward moving axially so rotate another block nut 6; The long slot bore 30 that described stabilizer rod 10 front ends pass on the rocking bar 8 as shown in Figure 7 exposes, be welded with limiting stopper 11 at stabilizer rod 10 leading sections, long slot bore length direction on this rocking bar 8 is that the length direction along rocking bar arranges, and the amplitude the when length dimension of long slot bore 30 need shake according to rocking bar 8 designs, the width dimensions of long slot bore 30 needs the size less than limiting stopper 11, and the rocking bar 8 when preventing from shaking directly breaks away from and causes danger from stabilizer rod 10.Simultaneously, this stabilizer rod 10 also is the director element of rocking bar 8 when shaking, and helps rocking bar to shake more stable; And drive the length distance that stabilizer rod 10 stretches out forward by turn block nut 6, can realize that also rocking bar 8 shakes the adjusting of stroke.

Described vehicle frame 1 rear portion is equipped with trailing wheel 21, this trailing wheel is hinged on the vehicle frame 1 through hind axle, on trailing wheel, also be provided with and the coaxial mounted driving flywheel 20 of trailing wheel, this driving flywheel is actually a kind of chain sprocket structure, it can drive trailing wheel 21 and do unidirectional forward rolling, and the mounting means of this trailing wheel 21 and vehicle frame 1 and the mounting structure of standard bicycle trailing wheel are similar.Can drive also forward rolling of trailing wheel 21 when driving flywheel 20 rotates forward, rotate backward when driving flywheel 20, then can not drive trailing wheel 21 and roll, continue forward rolling so the forward and backward rotation of driving flywheel 20 just can drive trailing wheel 21.Trailing wheel 21 also can be designed to two, only needing to connect between two trailing wheels a transmission shaft gets final product, drive flywheel 20 and be installed on this transmission shaft, two trailing wheels 21 can form more stable triangle with front-wheel 13, and this structure can allow the people that can not operate two-wheel car also can use.

Described vehicle frame 1 rear portion end face is equipped with pedal 23 and takes advantage of for stepping on, vehicle frame 1 rear side is equipped with duplex drive wheel 19, this duplex drive wheel as shown in Figure 8, to be consisted of by conjoined structure, the synchronous large and small sprocket wheel that rotates, and be in transmission connection as chain between hinge wheel and the driving flywheel 20, this duplex drive wheel also can be designed to conjoined structure, the hinge wheel that rotates synchronously and doffer and consist of.

Bottom surface, described vehicle frame 1 rear portion also is equipped with the rear wheel brake assembly, this rear wheel brake assembly as shown in Figure 6, it comprises brake pedal 22, braking rope 29 and brake shoes (not shown).Described brake pedal 22 middle parts are articulated and connected on vehicle frame 1, this brake pedal top is stretched out pedal 23 and is exposed, step on operation to make things convenient for pin, the bottom connects braking rope 29, simultaneously, also be provided with the retracing spring 17 that is connected between these brake pedal 22 bottoms and the vehicle frame 1, reset for trampling of brake pedal 22; Described braking rope 29 has mainly adopted the steel rope that intensity is higher, be difficult for breaking, and this braking rope passes fixed pulley 28 rear connection brake shoes.Step on brake pedal 22 when downwards, after rotate at this brake pedal middle part, can spur braking rope 29 and drive brake shoes by leverage and hold trailing wheel 21 tightly, thereby form Quick brake; The pedal force of releasing of brake pedal 22 can drive brake pedal 22 and reset under retracing spring 17 effects.

Described back-wheel drive assembly is installed in vehicle frame 1 bottom, mainly is to consist of by driving rope 4, driving chain 18, duplex drive wheel 19, retracing spring 17 and adjusting part etc.Described driving rope 4 has mainly adopted the steel rope that intensity is higher, be difficult for breaking, after this driving rope one end passes slotted hole default on the front fork stem 5, be fastened on rocking bar 8 bottoms; Driving rope 4 other ends pass steering wheel 3, three track adjusting wheels 2 are connected with driving chain 18 1 ends.When the duplex drive wheel was the hinge wheel of conjoined structure and minor sprocket, this hinge wheel and driving between the flywheel 20 was in transmission connection as chain, and driving chain 18 other ends were reeled and are connected with retracing spring 17 behind the minor sprocket; When duplex drive wheel 19 is the hinge wheel of conjoined structure and doffer, be in transmission connection as chain between this hinge wheel and the driving flywheel 20, drive that rope 4 other ends are direct multilaminate coiledly to connect retracing spring 17 after crossing doffer, can omit driving chain 18 these parts this moment, reduces production costs.Described retracing spring connects adjusting part, and this adjusting part is installed in vehicle frame 1 bottom surface.

Described steering wheel 3 as shown in Figure 3, it is installed in the end face of vehicle frame 1 front portion, and hinged being arranged in the wheel seat 24, installation shaft 25 is extended in this wheel seat bottom, is provided with bearing seat 27 at vehicle frame simultaneously, and bearing 26 is installed in this bearing seat; Described installation shaft 25 is installed in the bearing 26, therefore, this steering wheel 3 has formed the movable pulley structure that can make spinning motion by bearing 26, it is mainly used in auxiliary front-wheel 13 and turns, when making driving rope 4 form certain angular deviation in front fork stem 5 drive front-wheels rotations, rotation by steering wheel 3 can prevent from driving rope 4 slippage from the steering wheel 3, and to drive rope 4 more smooth, laborsaving in steering wheel 3 operations.

Described three track adjusting wheels 2 are installed in vehicle frame 1 bottom surface simultaneously, one of them track adjusting wheel of adjacent steering wheel 3 is mainly used in the driving that is positioned at vehicle frame 1 bottom is restricted 4 vertical transport to the vehicle frame top, and two other track adjusting wheel 2 mainly plays and will drive the effect of a level commutation of rope 4 dos transmission.

Described adjusting part as shown in Figure 5, it comprises the installation sleeve 15 that is welded on vehicle frame 1 bottom and axially is movably arranged on the interior screw rod 14 of installation sleeve, this screw rod is provided with two regulating nuts that are threaded 16, and two regulating nuts are separately positioned on installation sleeve 15 two ends, the external diameter of regulating nut 16 needs the aperture greater than installation sleeve 15, and described retracing spring 17 directly is connected on the screw rod 14.

This adjusting part can carry out the degree of tightness power of back-wheel drive assembly to be regulated, such as certain distance that the regulating nut 16 of installation sleeve 15 front ends (being the view direction left end) is outwarded winding forward, then screw rod 14 is done axially mobile backward, until the regulating nut of installation sleeve front end contacts again till the installation sleeve front end, then only need screw forward the regulating nut 16 of installation sleeve 15 rear ends, until the regulating nut of installation sleeve rear end contacts again till the installation sleeve rear end, can realize the accent pinales of back-wheel drive assembly this moment; Otherwise, also can realize the purpose that tightens of back-wheel drive assembly.

The operating mode of this Sport Activity Vehicle is as follows: both feet stand on the pedal 23, the handlebar on hands grasping rocking bar 8 tops shakes backward, at this moment, rocking bar 8 bottoms namely spur forward and drive rope 4, this driving rope spurs driving chain 18 by the conduction of steering wheel 3 and three track adjusting wheels 2, and under the drive of driving chain, realize duplex drive wheel 19 and drive the forward rotation of flywheel 20, so trailing wheel 21 is driven rolling also, and then drive whole vehicle and move forward, retracing spring 17 tensions that be connected on the driving chain 18 this moment are held power; When the power of shaking backward of unclamping on the handlebar, so that rocking bar 8 resets, the rocking bar that can carry out a new round shakes process under retracing spring 17 effects.

Described Sport Activity Vehicle also can be designed to version as shown in Figure 9, and it mainly is that front fork stem 5 is designed to straight shape fork arm structure, and this front fork stem recedes at a certain angle and is rotatably installed in the axle sleeve 12 of vehicle frame 1 front portion; And rocking bar 8 middle parts also are to be articulated and connected in " U " type free bearing 9 of front fork stem 5 tops welding, its articulated manner as shown in figure 10, mainly be in free bearing 9, to be provided with hard-wired hinge 31, and rocking bar 8 middle parts are provided with the long slot bore 30 that extends setting along the rocking bar length direction, remove the design of stabilizer rod 10 structures in this long slot bore, only be used for passing for hinge 31, so hinge can be long slot bore 30 interior moving up and down, namely rocking bar 8 relatively hinge 31 do upper and lower pulling; Hinge 31 two ends in the described free bearing 9 are stretched out to the free bearing both sides respectively and are connected with upper spring seat 43, rocking bar 8 bottoms then are provided with the lower spring cup 45 that is welded and fixed, between upper and lower spring perch, be provided with two adjusts bar 44, after passing upper and lower spring perch, the every equal activity in adjust bar two ends is connected with nut, the every adjust bar 44 outer resistance springs 32 that all are set with, pushing tow is on upper and lower spring perch respectively at the two ends of this resistance spring, and the turn nut can be regulated the spring force of resistance spring 32.The purpose that said structure is set is: when rocking bar 8 shakes the band motor vehicle when moving forward backward, also can shown in the direction of arrow of Fig. 9, pull back again, so after pulling rocking bar 8 also can drive lower spring cup 45 resistance to compression pression springs 32, upper spring seat 43 approaches relatively, thereby realized that rocking bar 8 can further temper the effect of muscle of upper extremity stretching.

When above-mentioned this rocking bar 8 structure that can possess simultaneously hand and stretching action is set, also need pedal 23 at vehicle frame 1 that vehicle seat 38 is set and take, and at vehicle frame 1 step tread plate 33 of doing forward and backward slippage along vehicle frame be set for people, design to form by these and support the use structure.

Described vehicle seat 38 rear portions are equipped with the back of the body bar 40 that is " L " type, this back of the body bar bottom is articulated and connected on the strut 37 of vehicle seat bottom, the top is provided with a pair of flexible massage column 41 that is articulated and connected, between back of the body bar 40 and strut 37, also be provided with extension spring 42, when the people rides on the vehicle seat 38 and because stretching rocking bar 8 and when toppling over backward, effect by extension spring 42 so that the back contact at flexible massage column 41, thereby form back massage.

Described step tread plate 33 as shown in figure 11, its bottom is provided with front forked frame 39 and the rear crotch 34 to downward-extension, described front forked frame fork is located at vehicle frame 1 both sides, this front forked frame bottom as shown in figure 12, pass through bolt, nut, pressing plate 46 fixes with braking rope 4, described rear crotch 34 forks are located at vehicle frame 1 both sides, be respectively equipped with two pairs of pulleys 35 as shown in figure 13 on this rear crotch, corresponding being respectively equipped with in vehicle frame 1 two sides for every pair of pulley 35 made the equipped chute 36 of slippage, before pulley is done along chute, rear movement, when the people topples over backward and scrunches step tread plate 33, can realize the exercise purpose of lower limb muscles.

The present invention can use as the ordinary traffic instrument, also can reach the purpose of tempering simultaneously muscle of upper extremity and lower limb muscles, it integrates amusement and recreation and sport and body-building, and powerful, rapid operation, safety can be widely used in the places such as park, scenic spot and public place of entertainment.

Claims

1. Sport Activity Vehicle, comprise vehicle frame (1), front fork stem (5), front-wheel (13), trailing wheel (21), back-wheel drive assembly and rear wheel brake assembly, described front-wheel (13) rolls and is arranged on front fork stem (5) front end, this front fork stem is rotatably installed in vehicle frame (1) front portion, described trailing wheel (21) rolls and is arranged on vehicle frame (1) rear portion, this trailing wheel is provided with coaxial mounted driving flywheel (20), it is characterized in that:

On a, the described front fork stem (5) rocking bar (8) is installed, this rocking bar middle part is articulated and connected on front fork stem (5) top;

B, described back-wheel drive assembly comprise driving rope (4), driving chain (18) and retracing spring (17), described driving rope (4) one ends are connected to rocking bar (8) bottom, the driving rope other end passes steering wheel (3), a plurality of track adjusting wheel (2) is connected with driving chain (18) one ends, the reel flywheel (20) of overdriving of this driving chain other end connects retracing spring (17), and this retracing spring is connected on the vehicle frame (1).

2. Sport Activity Vehicle according to claim 1 is characterized in that described vehicle frame (1) is provided with the duplex drive wheel (19) that rotates installation, hinge wheel and minor sprocket that this duplex drive wheel is conjoined structure, or be hinge wheel and the doffer of conjoined structure; Described duplex drive wheel (19) is hinge wheel and the minor sprocket of conjoined structure, and this hinge wheel and driving between the flywheel (20) is in transmission connection as chain, and driving chain (18) minor sprocket of reeling connects retracing spring (17); Described duplex drive wheel (19) is hinge wheel and the doffer of conjoined structure, is in transmission connection as chain between this hinge wheel and the driving flywheel (20), drives rope (4) direct winfing and crosses doffer connection retracing spring (17).

3. Sport Activity Vehicle according to claim 1, it is characterized in that described vehicle frame (1) bottom is provided with adjusting part, this adjusting part comprises the installation sleeve (15) that is arranged on vehicle frame (1) bottom and axially is movably arranged on the interior screw rod (14) of installation sleeve, described screw rod is provided with two regulating nuts that are threaded (16), these two regulating nuts are separately positioned on installation sleeve (15) two ends, and described retracing spring (17) is connected on the screw rod (14).

4. Sport Activity Vehicle according to claim 1, it is characterized in that described rear wheel brake assembly comprises brake pedal (22), braking rope (29) and brake shoes, described brake pedal (22) middle part is articulated and connected on vehicle frame (1), expose on this brake pedal (22) top, the bottom connects braking rope (29), this braking rope connects brake shoes, also is provided with the retracing spring (17) that is connected between described brake pedal (22) bottom and the vehicle frame (1).

5. Sport Activity Vehicle according to claim 1, it is characterized in that described steering wheel (3) is installed in the wheel seat (24), installation shaft (25) is extended in this wheel seat bottom, described vehicle frame is provided with bearing seat (27), bearing (26) is installed in this bearing seat, and described installation shaft (25) is installed in this bearing (26).

6. Sport Activity Vehicle according to claim 1, it is characterized in that described rocking bar (8) and the structure that is articulated and connected on front fork stem (5) top are to be provided with free bearing (9) on front fork stem (5) top, described rocking bar (8) is articulated and connected in this free bearing (9), described front fork stem (5) top also is provided with ramp structure (7), and this ramp structure is towards rocking bar (8) lopsidedness.

7. Sport Activity Vehicle according to claim 1, it is characterized in that described rocking bar (8) and the structure that is articulated and connected on front fork stem (5) top are to be provided with free bearing (9) on front fork stem (5) top, be provided with hinge (31) in this free bearing, free bearing is provided with hard-wired upper spring seat (43) outward, described rocking bar (8) is provided with the long slot bore (30) that passes for hinge (31), this long slot bore extends setting along the length direction of rocking bar (8), also is provided with the lower spring cup (45) fixing with rocking bar on the rocking bar (8); Be provided with between described upper spring seat (43) and the lower spring cup (45) and make the upper and lower movable adjust bar (44) of installing, this adjust bar two ends coupling nut, the outer resistance spring (32) that is set with of adjust bar (44), the two ends difference pushing tow of this resistance spring is on upper and lower spring perch.

8. Sport Activity Vehicle according to claim 1, it is characterized in that described front fork stem (5) is provided with the stabilizer rod (10) that level is installed, this stabilizer rod rear end is passed front fork stem (5) and is provided with the block nut (6) that is threaded, this block nut is fixed on the front fork stem (5), the long slot bore (30) that described stabilizer rod (10) front end passes on the rocking bar (8) exposes, and is provided with limiting stopper (11) at the stabilizer rod leading section.

9. Sport Activity Vehicle according to claim 1, it is characterized in that being equipped with on the described vehicle frame (1) before the vehicle frame work, the step tread plate of rear slippage (33), this step tread plate bottom is provided with front forked frame (39) and the rear crotch (34) to downward-extension, described front forked frame fork is located at vehicle frame (1) both sides, this front forked frame (39) bottom fixes with braking rope (4), described rear crotch (34) fork is located at vehicle frame (1) both sides, be respectively equipped with two pairs of pulleys (35) on this rear crotch, corresponding being respectively equipped with in the vehicle frame two sides for every pair of pulley made the equipped chute (36) of slippage.

10. each described Sport Activity Vehicle according to claim 1 ~ 9, it is characterized in that being equipped with on the described vehicle frame (1) pedal (23), vehicle seat (38) is set on this pedal, and back of the body bar (40) is installed at the vehicle seat rear portion, this back of the body bar bottom is articulated and connected on the strut (37) of vehicle seat (38) bottom, the top is provided with the flexible massage column (41) that is articulated and connected, and also is provided with extension spring (42) between back of the body bar (40) and strut (37).