WO2013026348A1

WO2013026348A1 - Labor-saving variable speed scooter

Info

Publication number: WO2013026348A1
Application number: PCT/CN2012/079379
Authority: WO
Inventors: 李建和
Original assignee: Li Jianhe
Priority date: 2011-08-22
Filing date: 2012-07-30
Publication date: 2013-02-28
Also published as: CN202225986U

Abstract

Disclosed in the present invention is a labor-saving variable speed scooter, whcich comprises a vehicle body, a driving system, a return system, a front wheel (14) and a rear wheel (15). The vehicle body comprises a head, a power fixing sheet (12) and a main support frame (13), wherein the head is located at a front part of the main support frame (13) and the power fixing sheet (12) is located at a rear part of the main support frame (13).The driving system includes a power rod, a power rotating shaft (22), a one-way flywheel (23), a power guide wheel (24), an eccentric wheel (25), a rear power gear (26), a flywheel power chain (231), a rear wheel power chain (261) and a labor-saving spring. The power rod comprises a front power rod (211) and a rear power rod (212) which are fixed with each other. A connecting part between the front power rod (211) and the rear power rod (212) is hinged on the power fixing sheet (12) through the power rotating shaft (22). The scooter with the structure has a labor-saving arrangement in structure, so that the scooter can start and climb easily, and can change speed. The scooter does not need being pedaled hardly in use, so the user is not easy to feel tired during pedaling repeatedly.

Description

A labor-saving shifting scooter

The utility model relates to the technical field of a scooter, in particular to a labor-saving shifting scooter. The application is based on the Chinese utility model patent application with the application number 201120306542.3 on the application date of August 22, 2011, the content of the above patent application. This document is incorporated herein by reference.

Background technique

Scooter can be used as entertainment products for children and adults in leisure, travel tools for people to travel at close range, fitness equipment, etc. It integrates entertainment, transportation and fitness. It has small size, light weight, convenient carrying and easy to learn. Suitable for people in multiple levels and multiple ages.

The utility model patent with the patent number 200920080728.4 discloses a scooter with a tilt pedal, which comprises a vehicle bracket, front and rear wheels, a power lever that is movably connected above the vehicle bracket, a power lever return mechanism and a setting. The main feature of the power transmission mechanism between the power lever and the driving wheel on the wheel axle is that the upper end of the power lever divides the movable pedal into two parts, a limit end and a labor-saving end, when the movable pedal is at the highest position. The movable pedal has an inclination of 15-45 degrees; a limit lever is arranged between the front portion of the movable pedal limit end and the bracket, and the length thereof is equal to the connecting shaft of the movable pedal and the limit lever from the highest point to the lowest point. The radius of the arc of the arc stroke formed.

The utility model patent No. 200920078968.0 discloses a reciprocating shifting pedal structure for a scooter, which has a power strut movablely connected to the scooter bracket, and is characterized in that it also has a power pressure A power lever returning mechanism that is bent upward at one end of the rod, the upper end of the power rod is connected with an active pedal through the shaft, and the movable pedal is divided into two parts: an active pedal limit end and a movable pedal labor saving end, and the movable pedal limit A movable connecting member capable of restricting the range of the movable pedal is provided between the front portion of the end and the vehicle bracket.

The above-mentioned several scooters of repeated pedaling movements are heavy, non-shiftable, and require a large amount of pedaling force during exercise, and the human foot is prone to numbness, fatigue, etc. in a short time, and has no structure. The labor-saving setting has the disadvantage of being difficult to climb.

Therefore, it is urgent to provide a labor-saving scooter, and the labor-saving setting is adopted in the structure, so that the scooter can be easily started, the uphill is easy, the speed can be changed, and the pedaling is not required in the use, so that the user does not feel tired when repeatedly stepping on the exercise. Summary of the invention

The utility model aims to provide a labor-saving shifting scooter, which adopts a labor-saving setting in the structure, makes the scooter easy to start, is easy to climb up, can be shifted, and does not need to be trampled during use, so that the user can repeatedly step on the exercise. Not easy to feel tired.

The purpose of the utility model is achieved by the following technical measures: A labor-saving shifting scooter includes a body, a drive system, a returning system, a front wheel and a rear wheel. The body includes a front end, a power fixing piece and a main bracket. The front end is located at the front of the main bracket, and the power fixing piece is located behind the main bracket. unit;

The drive system includes a power rod, a power shaft, a one-way flywheel, a power guide wheel, an eccentric wheel, a rear power gear, a flywheel power chain, a rear wheel power chain, and a labor-saving spring. The power rod includes a front power rod and a rear power rod, and the front power rod The power rod is fixed to the rear power rod, and the front power rod and the rear power rod joint are hinged to the power stator through the power shaft, and the one-way fly wheel is connected to the eccentric wheel and the rear wheel through the power output shaft, and the power guide wheel is disposed on the rear power rod. At the rear, one end of the flywheel power chain is fixed at the minimum of the outer arm of the eccentric wheel, bypassing the power guide wheel, and the other end is fixed to the power fixing piece, and the one-way flywheel and the rear power gear are connected by the rear wheel power chain transmission.

Further, the front end includes a front tube, a handle, a folder, a front fork and a plastic sleeve, a plastic sleeve is sleeved on the front fork, and the front tube is sleeved on the plastic sleeve, and the folder includes a quick release kit, a folding member and an octagonal nut. The folding base of the folding member is sleeved on the front fork, the octagonal nut is sleeved on the front fork, the octagonal nut is locked to the folding base, the folding base is fixed to the folding limit piece, and the quick release kit is provided with a quick release screw. Quick release collar and quick release handle, the quick release screw is slidably connected through the folding limit piece, the quick release collar is sleeved on the front tube, the front fork is provided with a marble hole, and the marble hole is provided with marbles, plastic The sleeve is provided with a marble hole at a position corresponding to the front fork marble hole, and the front tube is provided with a marble hole at a position corresponding to the front fork marble hole.

Further, the power fixing piece is further provided with a second power guiding wheel, the flywheel power chain bypasses the second power guiding wheel, the number of the driving system is two, the number of the power rods is two, and the two driving systems are respectively disposed on the main bracket On the left and right sides, the drive system on the left is connected to a power rod, and the drive system on the right is connected to another power rod.

Further, the labor-saving spring is a tension spring, one end of the tension spring is fixed to the main bracket, and the other end is fixed to the front power rod.

Further, the labor-saving spring is a coil spring, and the coil spring includes an inner card foot and an outer card foot, the inner card foot is fixed to the power rotating shaft, and the outer card foot is coupled to the power rod.

Further, the labor-saving spring is a torsion spring, and the torsion spring comprises a first leg, a second leg and a torsion spring body, the torsion spring body is sleeved on the power rotating shaft, the first leg is engaged with the rear power bar, and the second card is stuck Connected to the power plate.

Further, the labor-saving spring is a torsion spring, and the torsion spring comprises a first leg, a second leg and a torsion spring body, the torsion spring body is sleeved on the power output shaft, and the first leg is engaged with the one-way flywheel, the second pin The card is attached to the power fixing piece.

Further, the returning system includes a return gear and a return spring chain, and one end of the return spring chain is fixed to the main bracket, and the other end is fixed to the edge of the return gear, and the length of the chain in the return spring chain is greater than the return gear And the returning spring chain fixed point in the arc during the returning process, the return gear and the eccentric wheel are connected through the power output shaft.

Further, the returning system is a returning coil spring, and the returning coil spring comprises a returning inner clamping leg and a returning outer clamping foot, the returning inner clamping foot is fixed on the power output shaft, and the returning outer clamping leg is fixed on the power fixing piece.

Further, the returning system includes a return gear, a return guide wheel and a return chain, and the return guide wheel is rotatably connected to the main bracket, one end of the return chain is fixed to the front power rod, and the other end is fixed to the outer edge of the return gear, Position gear and eccentric wheel Force output shaft drive connection.

The utility model has the beneficial effects: a labor-saving shifting scooter, comprising a vehicle body, a driving system, a returning system, a front wheel and a rear wheel, the body comprises a front end, a power fixing piece and a main bracket, and the front part is located at the front part of the main bracket, and the power is The fixing piece is located at the rear of the main bracket; the driving system includes a power rod, a power shaft, a one-way flywheel, a power guide wheel, an eccentric wheel, a rear power gear, a flywheel power chain, a rear wheel power chain and a labor-saving spring, and the power rod includes a front power The rod and the rear power rod are fixed, the front power rod and the rear power rod are fixed, and the front power rod and the rear power rod joint are hinged to the power stator through the power shaft, and the one-way fly wheel is connected to the eccentric wheel and the rear wheel through the power output shaft. The power guide wheel is arranged at the rear of the rear power rod. One end of the flywheel power chain is fixed at the minimum of the outer arm of the eccentric wheel, bypassing the power guide wheel, and the other end is fixed to the power fixed piece, and the one-way flywheel and the rear power gear pass the rear wheel. Power chain drive connection. The scooter adopting this structure adopts a labor-saving setting in the structure, so that the scooter can be easily started, the uphill is easy to be changed, the shifting can be performed, and the pedaling is not required in use, so that the user does not feel fatigue when repeatedly stepping on the exercise.

DRAWINGS

The present invention will be further described with reference to the drawings, but the contents of the drawings do not constitute any limitation to the present invention. 1 is a schematic view showing the structure of the labor-saving shifting scooter of the labor-saving shifting scooter and the returning spring of the tension spring.

2 is a schematic diagram of a double step structure of a labor-saving shifting scooter according to the present invention.

3 is a schematic exploded view of a quick release component of a labor-saving shifting scooter according to the present invention.

4 is a schematic view showing the assembled state of the quick release component of the labor-saving shifting scooter according to the present invention.

FIG. 5 is a schematic view showing the disassembled state of the quick release component of the labor-saving shifting scooter according to the present invention.

6 is a schematic structural view of a quick release kit of a labor-saving shifting scooter according to the present invention.

7 is a schematic structural view of a folding member of a labor-saving shifting scooter according to the present invention.

FIG. 8 is a schematic view showing the structure of the coil spring returning force of the labor-saving shifting scooter of the utility model.

FIG. 9 is a schematic view showing the structure of the torsion spring of the labor-saving shifting scooter and the returning structure of the return spring chain.

Figure 10 is a top plan view of a labor-saving shifting scooter of the present invention.

Figure 11 is a schematic view showing the structure of the torsion spring of the labor-saving shifting scooter, the return guide wheel and the return chain.

Figure 12 is a schematic view showing the working state of the torsion spring, the return guide wheel and the return chain in Figure 11 of the labor-saving shifting scooter of the present invention.

In Figure 1-12, it includes:

111 handle, 112 front tube, 1131 release kit, 11311 release handle, 11312 release screw, 11313 release collar, 1132 - folding, 11321 - folding base, 11322 - folding limit,

1133 octagonal nut, 114 - front fork, 1141 marble hole, 115 plastic sleeve, 116 nylon tape, 12 - power plate, 13 - main bracket, 14 - front wheel, 15 - rear wheel , 211—front power pole, 212—rear power rod,

22——Power shaft, 23——one-way flywheel, 231—flywheel power chain, 232—power output shaft,

24——Power guide wheel, 241——Second power guide wheel,

25——eccentric wheel, 26——rear power gear, 261——rear wheel power chain,

271 - tension spring, 272 - torsion spring, 2721 - first "^ foot, 2722 - second card foot, 273 - coil spring, 2731 - inner card foot, 2732 - outer card foot,

31——Return gear, 32——Returning spring chain, 34——Returning coil spring, 341——Returning coil spring inner card foot, 342—One returning coil spring outer card foot, 35——Back Position guide wheel, 36 - return chain.

detailed description

The present invention will be further described in conjunction with the following examples.

Example 1

As shown in FIG. 1 to FIG. 11, a labor-saving shifting scooter according to the present invention includes a vehicle body, a driving system, a returning system, a front wheel 14 and a rear wheel 15, and the vehicle body includes a front end, a power fixing piece 12 and a main bracket. 13, the front end is located at the front of the main bracket 13, and the power fixing piece 12 is located at the rear of the main bracket 13;

The drive system includes a power rod, a power shaft 22, a one-way flywheel 23, a power guide wheel 24, an eccentric wheel 25, a rear power gear 26, a flywheel power chain 231, a rear wheel power chain 261, and a labor saving spring. The power rod includes a front power rod 211. The front power rod 212 and the rear power rod 212 are fixed to each other, and the front power rod 211 and the rear power rod 212 are connected to the power fixing piece 12 through the power rotating shaft 22, and the one-way flywheel 23 passes through the power output shaft 232. The eccentric wheel 25 and the rear wheel 15 are drivingly connected, the power guide wheel 24 is disposed at the rear of the rear power rod 212, and the flywheel power chain 231-end is fixed at the minimum of the peripheral force arm of the eccentric wheel 25, bypassing the power guide wheel 24, and the other end Fixed to the power fixing piece 12, the one-way flywheel 23 and the rear power gear 26 are drivingly connected by the rear wheel power chain 261.

The eccentric wheel 25 is equipped with a mechanical spring setting to make the scooter both labor-saving and variable speed. The labor-saving spring is to use the return time and space to step, and the required force is not large. At this time, the labor-saving spring is deformed, so that when the scooter returns to the position, a part of the pedaling force is converted into a labor-saving spring. The deformation can be stored in the labor-saving spring, in the forward power. When the output is stepped on, the power output process is saved, and the eccentric wheel 25 is shaped by the gear. When the power output is stepped on, the flywheel power chain 231 first pulls the center of the eccentric wheel 25 to the far axis, so that the arm is long. Relatively labor-saving, and the front power rod 211 arm can be set to grow to the rear power rod 212, so that the structure achieves multiple labor-saving purposes.

Since the linear speed of the flywheel power chain 231 pulling the eccentric 25 is substantially the same, due to the shape of the eccentric 25 itself, during the power output process, the radius of the flywheel power chain 231 gradually becomes smaller, and the speed of the power output shaft 232 is slower and faster. The effect of shifting is achieved.

The front end includes a front tube 112, a handle 111, a folder, a front fork 114 and a plastic sleeve 115, and the plastic sleeve 115 is sleeved on Front fork 114. The plastic sleeve is sleeved on the upper thread of the front fork 114, and the inner wall of the front tube 112 is protected from quick-release locking, and the inner wall is forced to be crushed by the thread due to the pressure, resulting in an increase in resistance when the front tube 112 moves up.

The front tube 112 is sleeved on the plastic sleeve 115. The folder includes a quick release kit 1131, a folding member 1132 and an octagonal nut 1133. The folding base 1321 of the folding member 1132 is sleeved on the front fork 114, and the octagonal nut 1133 is sleeved on the sleeve. The front fork 114, the octagonal nut 1133 locks the folding base 11321, the folding base 11321 is fixed to the folding limit piece 11322, and the quick release kit 1131 is provided with a quick release screw 11312, a quick release collar 11313 and a quick release handle 11311. The disassembly screw 11312 is slidably coupled to the folding stop piece 11322 to limit the range in which the front tube 112 moves. The quick release collar 11313 is sleeved on the front tube 112, the front fork 114 is provided with a marble hole 1141, and the marble hole 1141 is provided with a marble. The plastic sleeve 115 is provided with a marble hole 1141 at a corresponding position, and the front tube 112 is at A marble hole 1141 is provided at the corresponding position. Align the marbles with the holes in the front tube 112 to provide a more stable limit. When unstacking, the quick release handle 11311 should be opened first, and the marbles are pressed to pull out the front tube 112. Pull the front tube 112 upward as shown in the above figure, and then rotate the front end as shown in Figure 5. The power rod is lifted up, and the front tube 112 and the handle 111 are respectively attached to the front and rear pedals, and then fixed to the power rod. The upper nylon tape 116 binds the two parts together. This completes the folding process, and the opening process is reversed from the above.

The scooter adopting such a structure adopts a labor-saving setting in the structure, so that the scooter can be easily started, the uphill is easy, the shifting can be performed, and the pedaling is not required in the use, so that the user does not feel tired when repeatedly stepping on the exercise.

Example 2

A power-saving shifting scooter according to the present invention is shown in FIG. 2, and the main structure is the same as that of the first embodiment, except that the power fixing piece 12 is further provided with a second power guiding wheel 241, and the flywheel power chain is wound. Through the second power guiding wheel 241, the number of driving systems is two, and the number of power rods is two, and the two driving systems are respectively disposed on the left and right sides of the main bracket 13, and the driving system on the left side Connected to a power rod, the drive system on the right is connected to another power rod. In this structure, two power rods (pedals) are arranged side by side on the main support 13 by the power shaft 22, and the left and right pedals respectively drive two separate power systems, and the two power systems are distributed as shown in FIG. 2. As shown, the left and right feet step on the left and right pedals respectively around the power shaft 22 through the soles of the feet, and at the same time, a torsion spring 272 is added to the power shaft 22 in the above-mentioned power structure. When the person steps on the power rod forward, the power rod is pressed down. The torsion spring 272 is deformed, and a part of the energy is stored in the torsion spring 272 in the form of deformation energy. When the person presses the power rod backwards with the heel, the human force plus the torsion spring 272 deforms energy, making the power The lever is easier when the rear step power output. At the same time, three torsion springs 272 arm adjusting holes are arranged on the main bracket 13, and the deformation of the torsion spring 272 is adjusted by adjusting the position of the second pin 2722 of the torsion spring 272 to suit the power requirements of different people. The scooter adopting this structure adopts a labor-saving setting on the structure, which makes the scooter easy to start, easy to climb up, can be shifted, and does not need to be stepped on during use, so that the user does not feel tired when repeatedly stepping on the exercise.

Example 3 A labor-saving scooter according to the present invention is shown in FIG. 1 , and the main structure is the same as that of the first embodiment described above, except that the labor-saving spring is a tension spring 271 , and the end of the tension spring 271 is fixed to the main bracket 13 . One end is fixed to the front power rod 211. When returning, a part of the pedaling force is stored in the deformed tension spring 271. When the power is output, the deformation of the tension spring 271 can be released, achieving a labor-saving effect. The returning system includes a return gear 31 and a return spring chain 32. One end of the return spring chain 32 is fixed to the main bracket 13 at one end, and the other end is fixed to the edge of the return gear 31, and the length of the chain in the return spring chain 32 is returned. More than the arc of the return gear 31 and the return spring chain 32 fixed point during the returning process, the return gear 31 and the eccentric 25 are drivingly connected through the power output shaft 232.

Example 4

A labor-saving scooter according to the present invention is as shown in FIG. 8. The main structure is the same as that of the first embodiment described above, except that the labor-saving spring is a coil spring 273, and the coil spring 273 includes an inner leg 2731 and an outer leg. 2732, the inner leg 2731 is fixed to the power shaft 22, and the outer leg 2732 is engaged with the power rod. When the power rod is opened, the power rod will rotate counterclockwise around the fixed power shaft 22, and the outer leg 2732 will rotate counterclockwise along with the coil spring fixing column fixed on the power rod, so that the coil spring 273 is turned toward The inner disk is tight, and the kinetic energy is stored in the coil spring 273. When the person steps forward, the power rod rotates clockwise. At this time, the coil spring 273 also releases its elastic force, thereby achieving labor-saving effect. The returning system is a returning coil spring 34. The returning coil spring 34 includes a returning coil spring inner leg 341 and a returning coil spring outer leg 342. The returning coil spring inner leg 341 is fixed to the power output shaft 232, and is returned. The position spring outer leg 342 is fixed to the power fixing piece 12. When the person steps forward, the power rod rotates clockwise. At this time, the power guide wheel 24 fixed to the power rod drives the eccentric wheel 25 fixed to the power output shaft 232 through the flywheel power chain 231 as the power rod rotates clockwise. Turning clockwise, so that the power output shaft 232 also rotates clockwise, at this time, the power output shaft 232 will drive the return coil spring 34 clockwise by the returning spring inner leg 341 fixed to itself, thereby A portion of the kinetic energy of the front step is stored in the return coil spring 34 and is used for self-return of the entire system during the returning process. When the person steps back, the power rod will rotate counterclockwise into position. At this time, the power output shaft 232 rotates counterclockwise due to the elastic force of the return coil spring 34, so that the power system returns to the position, thereby achieving the return position. The scooter adopting this structure adopts a labor-saving setting in the structure, which makes the scooter easy to start, easy to climb up, can be shifted, and does not require a large pedaling during use, so that the user does not feel tired when repeatedly stepping on the exercise.

Example 5

As shown in FIG. 2, FIG. 9 and FIG. 10, the main structure of the utility model is the same as that of the above-mentioned first embodiment, and the difference is that the labor-saving spring is a torsion spring 272, and the torsion spring 272 includes the first The locking leg 2721, the second clamping leg 2722 and the torsion spring main body, the torsion spring main body is sleeved on the power rotating shaft 22, the first clamping leg 2721 is engaged with the rear power lever 212, and the second clamping leg 2722 is engaged with the power fixing piece 12. The returning system includes a return gear 31 and a return spring chain 32. The return spring chain 32-end is fixed to the main bracket 13, and the other end is fixed to the edge of the return gear 31, and the chain of the return spring chain 32 is returned. The length is greater than the arc of the return gear 31 and the return spring chain 32 at the fixed point during the returning process, and the return gear 31 It is connected to the eccentric 25 via a power take-off shaft 232. The scooter adopting this structure adopts a labor-saving setting on the structure, so that the scooter can be easily started, the uphill is easy, the speed can be changed, and the pedaling is not required in use, so that the user does not feel tired when repeatedly stepping on the exercise.

Example 6

A labor-saving scooter according to the present invention is shown in FIG. 11 and FIG. 12, and the main structure is the same as that of the first embodiment described above, except that the labor-saving spring is a torsion spring 272, and the torsion spring 272 includes a first leg 2721. The second leg 2722 and the torsion spring body are respectively sleeved on the power output shaft 232. The first leg 2721 is engaged with the one-way flywheel 23, and the second leg 2722 is engaged with the power fixing piece 12. The returning system includes a return gear 31, a return guide wheel 35 and a return chain 36. The return guide wheel 35 is rotatably connected to the main bracket 13, the return chain 36-end is fixed to the front power rod 211, and the other end is fixed at the back. The outer edge of the bit gear 31, the return gear 31 and the eccentric 25 are drivingly coupled via a power take-off shaft 232. When the power rod is wound up, the force of the person stepping backwards drives the power output shaft 232 and all the upper parts counterclockwise through the return chain 36 and the return gear 31, and is fixed to the one-way flywheel 23 (or the special wheel). The torsion spring 272 of the part on the power output shaft 232 is also pressed counterclockwise, so that the power output by the human being is converted into the deformation energy of the torsion spring 272, which is stored on the power output shaft 232. On the torsion spring 272, when the person steps on the power rod forward, the human force plus the torsion force of the torsion spring 272 on the power output shaft 232 makes the energy loss minimum when the pedal is performed, and the power that the person spends is the smallest, and the labor is saved. purpose. The torsion spring force arm adjustment hole on the power fixing piece 12 is divided into a plurality of holes, and the position of the torsion spring pin is fixed according to the magnitude of the strength of the force fixing piece 12, so that the different positions also make the torsion spring 272 twist the force. It will also vary in size. The scooter adopting this structure adopts a labor-saving setting in the structure, so that the scooter can be easily started, the uphill is easy, the speed can be changed, and the pedaling is not required in the use, so that the user does not feel tired when repeatedly stepping on the exercise.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention and are not intended to limit the scope of the present invention. Although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art The technical solutions of the present invention are modified or equivalently substituted without departing from the spirit and scope of the technical solutions of the present invention. Industrial applicability

The utility model comprises a vehicle body, a driving system, a returning system, a front wheel and a rear wheel. The body comprises a front end, a power fixing piece and a main bracket, the front part is located at the front part of the main bracket, and the power fixing piece is located at the rear part of the main bracket; the driving system Including power rod, power shaft, one-way flywheel, power guide wheel, eccentric wheel, rear power gear, flywheel power chain, rear wheel power chain and labor-saving spring, power rod including front power rod and rear power rod, front power rod and rear The power rod is fixed, and the front power rod and the rear power rod joint are hinged to the power fixing piece through the power shaft. The scooter adopting the structure has a labor-saving setting in the structure, so that the scooter can be easily started, the slope is easy to be lifted, the speed can be changed, and the pedaling is not required in use, so that the user does not feel fatigue when repeatedly stepping on the motion, and the invention Creation can be mass produced and has a good market prospect.

Claims

Claim

A labor-saving shifting scooter comprising a vehicle body, a drive system, a returning system, a front wheel and a rear wheel, wherein: the vehicle body comprises a front end, a power fixing piece and a main bracket, the front side being located in front of the main support The power fixing piece is located at a rear portion of the main bracket;

The drive system includes a power rod, a power shaft, a one-way flywheel, a power guide wheel, an eccentric wheel, a rear power gear, a flywheel power chain, a rear wheel power chain, and a labor-saving spring, the power rod including a front power rod and a rear power rod The front power rod and the rear power rod are fixed, and the front power rod and the rear power rod joint are hinged to the power fixing piece through the power rotating shaft, and the one-way flying wheel passes through the power output shaft and the eccentric wheel. The rear wheel drive is connected, the power guide wheel is disposed at a rear portion of the rear power rod, and one end of the flywheel power chain is fixed at a minimum of the outer force arm of the eccentric wheel, bypassing the power guide wheel, and the other end is fixed to the power fixed piece The one-way flywheel and the rear power gear are drivingly connected by the rear wheel power chain.

2. The labor-saving shifting scooter according to claim 1, wherein: the front end comprises a front tube, a handle, a folder, a front fork and a plastic sleeve, and the plastic sleeve is sleeved on the front side a fork, the front tube is sleeved on the plastic sleeve, the folder comprises a quick release kit, a folding member and an octagonal nut, and a folding base of the folding member is sleeved on the front fork, the octagonal The nut is sleeved on the front fork, the octagonal cap locks the folding base, the folding base is fixed to the folding limit piece, and the quick release kit is provided with a quick release screw and a quick release collar And the quick release handle, the quick release screw is slidably connected to the folding limit piece, the quick release collar is sleeved on the front tube, and the front fork is provided with a marble hole, the marble A marble is disposed in the hole, and the plastic sleeve is provided with a marble hole at a position corresponding to the front fork marble hole, and the front tube is provided with a marble hole at a position corresponding to the front fork marble hole.

3. The power-saving shifting scooter according to claim 1, wherein: the power fixing piece is further provided with a second power guiding wheel, the flywheel power chain bypassing the second power guiding wheel, the driving The number of systems is two, the number of the power rods is two, two of the driving systems are respectively disposed on the left and right sides of the main bracket, and the driving system on the left side is connected to a power rod, right side The drive system is connected to another power rod.

4. The labor-saving shifting scooter according to claim 1, wherein: the labor-saving spring is a tension spring, and one end of the tension spring is fixed to the main bracket, and the other end is fixed to the front power rod.

5. The labor-saving shifting scooter according to claim 1, wherein: the labor-saving spring is a coil spring, the coil spring includes an inner leg and an outer leg, and the inner leg is fixed to the a power shaft, wherein the outer card is engaged with the power rod.

6 . The power saving pedal scooter according to claim 1 , wherein: the labor saving spring is a torsion spring, and the torsion spring comprises a first leg, a second leg and a torsion spring body, The torsion spring body is sleeved on the power rotating shaft, the first leg is engaged with the rear power bar, and the second leg is engaged with the power fixing piece.

7. The labor-saving shifting scooter according to claim 1, wherein: the labor-saving spring is a torsion spring, The torsion spring includes a first leg, a second leg and a torsion spring body, the torsion spring body is sleeved on the power output shaft, the first leg is engaged with the one-way flywheel, and the second The card foot is connected to the power fixing piece.

The power-saving shifting scooter according to any one of claims 4 to 7, wherein the returning system comprises a return gear and a return spring chain, and the return spring chain is fixed at one end. In the main bracket, the other end is fixed to the edge of the return gear, and the length of the chain in the return spring chain is greater than the fixed point of the return gear and the return spring chain in the returning process. The eccentricity of the eccentric is transmitted through the power output shaft.

The power-saving shifting scooter according to any one of claims 4 to 7, wherein: the returning system is a returning coil spring, and the returning coil spring comprises a returning inner leg and a back The outer card leg is fixed to the power output shaft, and the return outer pin is fixed to the power fixing piece.

The power-saving shifting scooter according to any one of claims 4 to 7, wherein: the returning system comprises a return gear, a return guide wheel and a return chain, and the return guide wheel Rotatingly connected to the main bracket, one end of the return chain is fixed to the front power rod, and the other end is fixed to an outer edge of the return gear, and the return gear is connected with the eccentric through a power output shaft .