CN113799906A

CN113799906A - Swing rod driving type pedal bicycle

Info

Publication number: CN113799906A
Application number: CN202010541277.0A
Authority: CN
Inventors: 杜洁; 乔云帆; 其他发明人请求不公开姓名
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-12-17

Abstract

The invention discloses a swing rod driving type pedal bicycle, which comprises a swing rod driving mechanism, a transmission system and a frame provided with the swing rod driving mechanism and the transmission system, wherein a left pedal and a right pedal in the swing rod driving mechanism are driven to swing up and down to drive a swing rod and a driving shaft to rotate, the driving shaft drives a first bevel gear in the transmission system to rotate clockwise or anticlockwise, then the first bevel gear drives a second bevel gear and a third bevel gear to rotate, and a one-way clutch embedded in the second bevel gear or a one-way clutch embedded in the third bevel gear drives a rear shaft to rotate, so that the rear shaft drives the rear wheel to rotate forwards. The bicycle has the characteristics of high transmission efficiency and simple operation, and is suitable for sitting and riding, standing and riding or sitting and standing alternately.

Description

Swing rod driving type pedal bicycle

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of bicycles, in particular to a swing rod driving type pedal bicycle.

[ background of the invention ]

As a green environment-friendly vehicle, a driving system of a bicycle generally: the bicycle consists of pedals, a crank, a middle shaft, a chain wheel, a chain, a flywheel, a rear shaft, a rear wheel and the like; a chain wheel and two cranks with an included angle of 180 degrees are arranged on a middle shaft, and the driving mode is as follows: the two feet of the rider pedal the pedals mounted on the crank respectively to drive the crank to do circular motion, and simultaneously drive the middle shaft and the chain wheel to rotate, and then drive the rear wheel to rotate through the chain, the flywheel and the rear shaft, so that the bicycle continuously moves forward.

The above driving method has disadvantages: when the two pedals are respectively positioned in the high point area and the low point area of the circular motion track, a rider has to adopt the forces of rotating the ankle and pushing one foot forwards and pulling the other foot backwards to drive the pedals to continue circular motion, the driving efficiency in the area is low, the physical power of the rider is wasted, and the rider is more difficult to ride on an uphill road.

[ summary of the invention ]

The invention aims to overcome the existing problems and provides a swing rod driving type pedal bicycle which is high in transmission efficiency, suitable for sitting riding, standing riding or sitting-standing alternate riding, simple to operate and capable of bringing relaxed and free experience to riders.

The purpose of the invention is realized by the following technical scheme:

a swing rod driving type pedal bicycle comprises a swing rod driving mechanism, a transmission system and a frame provided with the swing rod driving mechanism and the transmission system.

The swing rod driving mechanism comprises a pair of pedals, a driving swing rod, a driving shaft, a follow-up swing rod and a bracket;

the bracket is connected with the frame through bolts or in a welding mode, and a bearing and an end cover for fixing the bearing are arranged on the bracket;

one end of the driving shaft penetrates through a bearing of the bracket to be fixedly connected with the middle part of the driving swing rod, the driving shaft is supported by the bearing of the bracket and rotates clockwise or anticlockwise along with the swing of the driving swing rod, and the other end of the driving shaft is connected with the transmission system through a key or a spline;

the middle part of the driving swing rod is fixedly connected with the driving shaft and drives the driving shaft to rotate, and two ends of the driving swing rod are respectively hinged with the pedals;

the middle part of the follow-up swing rod is hinged to the bracket through a pin shaft, and two ends of the follow-up swing rod are hinged to the pedals respectively;

the pair of pedals are respectively provided with pedal faces and connecting holes which are arranged up and down and used for mounting the pedals, and are respectively hinged with the two ends of the driving swing rod through the two upper connecting holes and are hinged with the two ends of the follow-up swing rod through the two lower connecting holes;

the support, the driving swing rod, the follow-up swing rod and the pair of pedals are connected through the swing rod driving mechanism, the support, the driving swing rod, the follow-up swing rod and the pair of pedals form a linkage mechanism of two parallelograms with the support as a shared edge in a vertical plane, and the pedal surface of each pedal is always in a horizontal state in the swinging process because the support is fixed and vertical;

the transmission system comprises a first bevel gear, a second bevel gear, a third bevel gear, a rear shaft, two bearing seats, two rear wheels and a fixed seat;

the fixed seat is provided with a bearing, and can be connected to the frame by bolts or welded on the frame;

the first bevel gear is supported and positioned through a bearing of the fixed seat, and a key or a spline arranged on the core part is in matched connection with a key or a spline arranged on a driving shaft in the swing rod driving mechanism and is driven by the driving shaft to rotate clockwise or anticlockwise;

the two bearing seats are oppositely arranged on two sides of the fixed seat, namely positioned on two sides of the first bevel gear, and are fixedly connected through screws, and bearings are respectively embedded in the two bearing seats and support the rear shaft through the bearings;

the rear shaft is supported by the bearings of the two bearing seats, the second bevel gear and the third bevel gear are arranged between the two bearing seats in the middle of the rear shaft, and the two ends of the rear shaft are respectively connected and fixed with the rear wheel;

the second bevel gear comprises a second bevel gear body and a one-way clutch or a one-way bearing or a one-way ratchet wheel embedded in the second bevel gear body or a component which has the characteristics of one-way transmission of torque and opposite rotation without transmission of torque;

the third bevel gear comprises a third bevel gear body and a one-way clutch or a one-way bearing or a one-way ratchet wheel arranged on the third bevel gear body or a component which has the characteristic of one-way transmission of torque and can relatively rotate in the opposite direction without transmitting the torque;

the second bevel gear and the third bevel gear are respectively meshed with two sides of the first bevel gear, so that the rotation directions of the second bevel gear and the third bevel gear are opposite, the torque transmission directions of the one-way clutches or the one-way bearings or the one-way ratchets in the second bevel gear and the third bevel gear are the same, the first bevel gear driven by the driving shaft to rotate clockwise or anticlockwise rotates no matter clockwise or anticlockwise, the second bevel gear and the third bevel gear only rotate and transmit torque driven by the first bevel gear, and the other bevel gear rotates in the opposite direction but not transmits torque;

the one-way clutch or the one-way bearing or the one-way ratchet wheel embedded in the second bevel gear and the third bevel gear are respectively connected with the rear shaft through keys and transmit torque to the rear shaft, and the torque transmitting directions of the one-way clutch or the one-way bearing or the one-way ratchet wheel in the second bevel gear and the third bevel gear are the same direction and are the rotating direction of the rear shaft driving the rear wheel to advance;

the two rear wheels are provided with internal threads and hexagon socket holes for fastening and dismounting tools in the core parts;

the frame is characterized in that the middle part of the frame is connected with a bracket of the swing rod driving mechanism, and the rear part of the frame is connected with a fixed seat of the transmission system.

The working principle of the swing rod driving type pedal bicycle is as follows:

when the bicycle is ridden, a rider steps on the two pedals respectively by feet, the pedals are alternatively stepped downwards, the driving swing rod is driven to swing left and right to drive the driving shaft and the first bevel gear connected with the driving shaft to rotate, the second bevel gear and the third bevel gear are driven to rotate by the first bevel gear, and the rear shaft is driven to rotate by the one-way clutch or the one-way bearing or the one-way ratchet wheel arranged on the second bevel gear or the third bevel gear, so that the rear wheel is driven to rotate by the rear shaft.

Wherein, because the pedals are connected with two ends of the driving swing rod, when the pedals are alternatively treaded by two feet, the driving swing rod swings left and right, the first bevel gear rotates clockwise or anticlockwise along with the driving shaft, because the second bevel gear and the third bevel gear are symmetrically engaged with the first bevel gear at two sides at the same time, the second bevel gear and the third bevel gear can rotate simultaneously and the rotating directions are opposite, the torque transmission direction of the one-way clutch or the one-way bearing or the one-way ratchet wheel embedded in the second bevel gear and the third bevel gear is the rotating direction for driving the rear shaft and the rear wheel to move forward, when one rotating direction of the second bevel gear and the third bevel gear is the torque transmission direction of the one-way clutch or the one-way bearing or the one-way ratchet wheel, namely the rotating direction for driving the rear shaft and the rear wheel to move forward, the other bevel gear rotates to the opposite direction without transmitting torque, therefore, the two feet of the rider alternately tread the pedals, so that the first bevel gear driven by the driving shaft is driven by the left-right swing of the driving swing rod to rotate clockwise or anticlockwise, and the rear wheel can be driven to rotate forwards.

Furthermore, because the pedal tread of the swing rod driving mechanism is always kept in a horizontal state in the driving process, namely the pedal tread in riding is always kept in the horizontal state, the riding person can operate easily, the bicycle is suitable for riding in a sitting mode, a standing mode or a sitting-standing mode alternately, and the bicycle can bring relaxed and free experience to the riding person.

Furthermore, the driving swing rod driven by the pedal takes the driving shaft as the center and swings up and down at the central horizontal height position, and the downward force applied by the rider to the pedal generates the maximum torque at the central height position of the driving shaft, so that the riding efficiency is improved; in addition, in the limit swing range of the driving swing rod, a rider can freely control the left-right swing amplitude, so that the riding becomes a free and pleasant experience.

According to the preferable scheme of the invention, the stop gear is arranged on the driving swing rod or the bracket, when the driving swing rod is in the limit swing position, the stop gear is contacted with the driving swing rod or the bracket, so that the limiting and buffering effects are achieved, the riding comfort is improved, and the stop gear is preferably made of elastic non-metal materials.

According to the preferable scheme of the invention, the transmission system is provided with the protective cover, and the protective cover is preferably fixed on the fixed seat by adopting a screw, so that dust and impurities are prevented from entering the meshing position of the gear, and the service life of the gear is prevented from being shortened due to meshing clamping stagnation or accelerated gear abrasion.

According to the preferable scheme of the invention, the pedal surface of the pedal is provided with an anti-skid surface, the surface can be provided with anti-skid patterns, and non-metal anti-skid materials can be selected, so that the riding safety and comfort are improved.

[ description of the drawings ]

The invention is explained in detail below by way of example on the basis of the figures.

FIG. 1 schematically shows a top view of a pendulum rod driven bicycle

FIG. 2 schematically shows a side view of a pendulum rod driven bicycle

FIG. 3 is a sectional view taken along line A-A of FIG. 2

FIG. 4 is a partial enlarged view of part I of FIG. 3

FIG. 5 is a partial enlarged view of section II of FIG. 3

FIG. 6 is a sectional view taken along line B-B of FIG. 3

FIG. 7 is a partial enlarged view of part III of FIG. 6

FIG. 8 shows a schematic view of a pendulum drive mechanism and a support

FIG. 9 is a cross-sectional view taken along line C-C of FIG. 8

FIG. 10 is a schematic view of the structure of the driving swing link

FIG. 11 is a top view of FIG. 10

FIG. 12 is a schematic view of a position of the swing link driving mechanism for swinging

FIG. 13 is a partial enlarged view of the portion IV of FIG. 6

List of reference numerals:

1 oscillating bar driving mechanism

2 drive train

3 vehicle frame

4 foot pedal

4a pedal

4b pedal surface

4c pedal surface

4d connecting plate 1

4e connecting plate 2

5 upper rotating shaft

5a upper rotating shaft

6 lower rotating shaft

6a lower rotating shaft

7 drive pendulum rod

7a stop

7b jacket

7c swing arm

7d connecting sleeve

8 drive shaft

8a knurling

8b spline

9 follow-up swing rod

10 pin shaft

10a shaft shoulder

11 support

12 screw

13 screw

14 self-locking nut

15 self-locking nut

16 bearing

17 end cap

18 screw

19 washer

20 sets

21 fixed seat

21a bearing

22 first bevel gear

22a spline

23 second bevel gear

23a one-way clutch

24 third bevel gear

24a one-way clutch

25 bearing seat

25a bearing seat

25b bearing

25c screw

25d lock washer

25e locating pin

26 rear wheel

26a internal thread

26b hexagonal hole

27 rear wheel

27a internal thread

27b hexagonal hole

28 rear axle

28a key

28b Key

28c external screw thread

28d external thread

28e wrench mouth

29 distance sleeve

30 spacer bush

30a spacer bush

31 nut

32 protective cover

33 screw

[ detailed description ] embodiments

In order to make those skilled in the art understand the technical solutions of the present invention well, the following further describes the present invention with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

Referring to fig. 1 and 2, the swing link driving type bicycle in the embodiment includes a swing link driving mechanism (1), a transmission system (2), and a frame (3) on which the swing link driving mechanism (1) and the transmission system (2) are mounted.

Referring to fig. 8, the swing link driving mechanism (1) includes a pedal (4), a pedal (4a), an upper rotating shaft (5a), a lower rotating shaft (6a), a driving swing link (7), a driving shaft (8), a follow-up swing link (9), a pin shaft (10) and a bracket (11).

Referring to fig. 6, 7 and 8, the bracket (11) is connected with the frame (3) by a screw (12), the bracket (11) is provided with a bearing (16) and an end cover (17) for fixing the bearing (16), and the end cover (17) is fixed on the bracket (11) by a screw (18); the support (11) can be a casting part or a combination of sheet metal parts, the bearing (16) is used for supporting and positioning the driving shaft (8), the lower part of the support (11) is connected with the middle part of the follow-up swing rod (9) through a pin shaft (10), and the support (11) plays a role in connecting the swing rod driving mechanism (1) with the frame (3) and supporting the swing rod driving mechanism (1).

Referring to fig. 8, 10 and 11, a preferred structure of the driving swing rod (7) is shown in the figures, the driving swing rod (7) comprises a middle jacket (7b), two symmetrically distributed swing arms (7c) and two symmetrically distributed connecting sleeves (7d), the driving swing rod (7) is formed by welding, the middle jacket (7b) of the driving swing rod (7) is fixedly connected with a driving shaft (8), and the connecting sleeves (7d) at two ends of the driving swing rod (7) are respectively hinged and connected with a pedal (4) and a pedal (4a) through an upper rotating shaft (5) and an upper rotating shaft (5 a).

Referring to fig. 7 and 8, a hole is respectively formed in the middle and two ends of the follow-up swing rod (9), the hole in the middle is connected to the support (11) through the pin shaft (10), the support (11) is preferably in threaded connection with the pin shaft (10), the shaft shoulder (10a) arranged on the pin shaft (10) is used for positioning, the follow-up swing rod (9) can rotate around the pin shaft (10), a gasket (19) for preventing friction is arranged between the follow-up swing rod (9) and the support (11), and the holes in the two ends of the follow-up swing rod (9) are used for connecting the pedals (4) and (4 a).

Referring to fig. 3, 7 and 8, one end of a driving shaft (8) is provided with a shaft diameter matched with a bearing (16) on a bracket (11) and a shaft diameter matched with a jacket (7b) of a driving swing rod (7), one end of the driving shaft (8) penetrates through the bearing (16), a sleeve (20) and the jacket (7b) in the middle of the driving swing rod (7), the jacket (7b) is tightened through a fastening screw (13) for connection, the driving shaft (8) rotates clockwise or anticlockwise along with the swing of the driving swing rod (7), and in order to prevent the phenomenon of slipping when torque is transmitted, knurling (8a) is arranged on the shaft diameter matched with the jacket (7b) of the driving shaft (8) for increasing friction force and torque can be transmitted in a flat shaft mode; the other end of the driving shaft (8) is connected with the transmission system (2) through a spline (8 b).

Referring to fig. 8, 9 and 12, a preferred structure of the pedals (4) and (4a) is shown, the pedals (4) and (4a) are respectively provided with pedal faces (4b), pedal faces (4c), a connecting plate 1(4d) and a connecting plate 2(4e), the pedals (4) and (4a) are preferably cast or combined by sheet metal, the connecting plate 2(4e) is respectively provided with an upper hole and a lower hole, the connecting plate 1(4d) is provided with a hole and is coaxial with the upper hole of the connecting plate 2(4e), and an upper rotating shaft (5) and an upper rotating shaft (5a) are respectively connected with connecting sleeves (7d) at two ends of a driving swing rod (7) through the hole of the plate 1(4d) and the upper hole of the connecting plate 2(4e) and are fastened through self-locking nuts (14); the lower rotating shaft (6) and the lower rotating shaft (6a) are connected with holes at two ends of the follow-up swing rod (9) through lower holes of the connecting plate (2 (4e) and are fastened through a self-locking nut (15); the connection of the upper rotating shaft (5), the lower rotating shaft (6) of the upper rotating shaft (5a) and the lower rotating shaft (6a) is hinged.

Referring to fig. 8, 10 and 12, the distance from the center of the jacket (7b) of the driving swing rod (7) to the center of the connecting sleeve (7d) at the two ends and the distance from the center of the hole in the middle of the servo swing rod (9) to the center of the hole at the two ends are both equal, and the distance from the center of the jacket (7b) of the driving swing rod (7) to the center of the hole in the middle of the fixed servo swing rod (9) and the vertical distance from the centers of the upper and lower holes of the pedal (4) and the pedal (4a) are both equal, so that in the swing rod driving mechanism (1), the bracket (11), the driving swing rod (7), the servo swing rod (9), the pedal (4) and the pedal (4a) are connected through the connection, and form two parallelogram connecting rod mechanisms with the bracket (11) as a shared side in a vertical plane, and the pedal surfaces (4b) of the pedal (4) and the pedal (4a) are fixed and vertical surfaces due to the bracket (11) being fixed and vertical surfaces, The pedal surface (4c) is always in a horizontal state in the swinging process.

Referring to fig. 3, 4 and 5, the transmission system (2) comprises a first bevel gear (22), a second bevel gear (23), a third bevel gear (24), a rear shaft (28), a distance sleeve (29), a spacer bush (30a), a bearing seat (25a), a nut (31), a rear wheel (26), a rear wheel (27) and a fixed seat (21); wherein, bearing (21a) are installed to fixing base (21), and fixing base (21) can weld on frame (3), also can adopt the bolt connection mode to fix with frame (3).

Referring to fig. 3, 4 and 5, the first bevel gear (22) is supported and positioned by a bearing (21a), and a spline (22a) arranged on the core is matched and connected with a spline (8b) arranged on a driving shaft (8) in the swing rod driving mechanism (1) and is driven by the driving shaft (8) to rotate clockwise or anticlockwise; a one-way clutch (23a) or a one-way bearing or a one-way ratchet is embedded in the second bevel gear (23) or a component which has the characteristics of one-way transmission of torque and opposite direction relative rotation without transmission of torque is used; a one-way clutch (24a) or a one-way bearing or a one-way ratchet is embedded in the third bevel gear (24) or a component with the characteristics of one-way transmission of torque and opposite rotation directions without transmission of torque is used; the one-way clutch (23a) and the one-way clutch (24a) are connected with the rear shaft (28) through a key (28a) and a key (28b) respectively and transmit torque to the rear shaft (28), and the directions of the torque transmission of the one-way clutch (23a) and the one-way clutch (24a) are the same, namely the rotation direction of the rear shaft (28) driving the rear wheel (26) and the rear wheel (27) to advance.

Referring to fig. 3, 4 and 5, the second bevel gear (23) and the third bevel gear (24) are respectively engaged with two sides of the first bevel gear (22) at the same time, so that the rotation directions of the second bevel gear (23) and the third bevel gear (24) are opposite, and because the transmission torque directions of the one-way clutch (23a) and the one-way clutch (24a) are the same, the first bevel gear (22) which is driven by the driving shaft (8) to rotate clockwise or anticlockwise rotates, and no matter the first bevel gear (23) and the third bevel gear (24) rotate clockwise or anticlockwise, only one of the second bevel gear (23) and the third bevel gear (24) is driven by the first bevel gear (22) to rotate and transmit torque, so that the rear shaft (28) can be driven to drive the rear wheel (26) and the rear wheel (27) to rotate forwards, and the other bevel gear rotates in the opposite direction without transmitting torque.

Referring to fig. 3, 4, 5 and 13, the bearing seat (25) and the bearing seat (25a) are the same members installed oppositely, and are respectively embedded with a bearing (25b) and a positioning pin (25e), the rear shaft (28) is supported and positioned by the bearing (25b) of the bearing seat (25) and the bearing seat (25a), and is connected to the fixing seat (21) by a screw (25c) and a check washer (25d) after being positioned by the positioning pin (25e), and the bearing seat (25) and the bearing seat (25a) are installed on two sides of the fixing seat (21) oppositely, namely two sides of the first bevel gear (22).

Referring to fig. 3, 4, and 5, the rear wheel (26) and the rear wheel (27) are provided with an internal thread (26a), an internal thread (27a), and a hexagonal hole (26b) and a hexagonal hole (27b) for a fastening and removing tool, respectively, in the core portion.

Referring to fig. 3, 4 and 5, the rear shaft (28) is provided with a key (28a) and a key (28b) which are connected with one-way clutches (23a and 24a) embedded in the second bevel gear (23) and the third bevel gear (24), and an external thread (28c) and an external thread (28d) of which the two ends are connected with the rear wheel (26) and the rear wheel (27); the rear shaft (28) sequentially penetrates through the bearing seat (25), the spacer bush (30), the second bevel gear (23), the distance bush (29), the third bevel gear (24), the spacer bush (30a) and the bearing seat (25a), the rear shaft (28) is axially fixed through the nut (31), and then the rear wheel (26) and the rear wheel (27) are respectively installed through the external thread (28c) and the external thread (28d) arranged at the two ends of the rear shaft (28), so that the threaded connection is prevented from loosening in the riding process, the rotating direction of the threads is opposite to the rotating direction of the advancing direction of the corresponding rear wheel, namely the rotating directions of the internal thread (26a) and the external thread (28c) are right-handed, and the rotating directions of the internal thread (27a) and the external thread (28d) are left-handed; a wrench opening (28e) is arranged on the rear shaft (28) so as to be convenient to assemble and disassemble; the rear shaft (28) is supported and positioned by a bearing seat (25) and a bearing (25b) of the bearing seat (25a), and is driven to rotate by a one-way clutch (23a) or a one-way clutch (24a) embedded in the second bevel gear (23) or the third bevel gear (24).

Referring to fig. 3, 4 and 5, a distance sleeve (29) is provided for securing a distance between the second bevel gear (23) and the third bevel gear (24).

Referring to fig. 3, 4 and 5, the spacer (30) and the spacer (30a) are provided to ensure the clearance between the bearing seat (25) and the second bevel gear (23) and the clearance between the bearing seat (25a) and the third bevel gear (24).

Through the detailed description above, the swing rod driven type pedal bicycle provided by the embodiment of the invention has the advantages that when the bicycle is ridden, a rider alternately treads the pedals (4) and the pedals (4a) downwards by feet to drive the swing rod (7) to swing left and right to drive the driving shaft (8) and the first bevel gear (22) connected with the driving shaft (8) to rotate clockwise or anticlockwise, the first bevel gear (22) drives the second bevel gear (23) and the third bevel gear (24) to rotate, the rear shaft (28) is driven to rotate by the one-way clutch (23a) embedded in the second bevel gear (23) or the one-way clutch (24a) embedded in the third bevel gear (24), and the rear wheel (26) and the rear wheel (27) can be driven to rotate forwards by the driving of the rear shaft (28) no matter whether the first bevel gear (22) rotates clockwise or anticlockwise.

Referring to fig. 8 and 12, the pedal surfaces (4b) and (4c) of the pedals (4) and (4a) are shown to be anti-slip surfaces, and the surfaces of the pedal surfaces can be provided with anti-slip patterns or non-metal anti-slip materials, so that the riding safety and comfort are improved.

Referring to fig. 8, 10 and 11, a preferred structure of the driving swing rod (7) is shown, a stop (7a) is arranged on the driving swing rod (7), when the driving swing rod (7) is in a limit swing position, the stop (7a) is contacted with the bracket (11) to play a role in limiting and buffering, the riding comfort is improved, and the stop (7a) is preferably made of an elastic non-metallic material.

Referring to fig. 3 and 13, a protective cover (32) is arranged on the transmission system (2), and the protective cover (32) is preferably fixed on the fixed seat (21) by using a screw (33) to prevent dust and sundries from entering the gear meshing position and avoid the gear meshing jamming or accelerating gear abrasion to shorten the service life of the gear.

Referring to fig. 3, the transmission system (2) can obtain different transmission ratios by adjusting the tooth numbers of the first bevel gear (22), the second bevel gear (23) and the third bevel gear (24) to meet the requirements of riders of different ages.

Referring to fig. 1, the swing link driven bicycle in this embodiment is shown as a four-wheel bicycle with three wheels, i.e., one front wheel and two rear wheels, but the four-wheel bicycle can also be a four-wheel bicycle with two front wheels and two rear wheels.

Claims

1. The utility model provides a pendulum rod drive formula pedal bicycle which characterized in that: comprises a swing rod driving mechanism (1), a transmission system (2) and a frame (3) provided with the swing rod driving mechanism (1) and the transmission system (2);

the swing rod driving mechanism (1) comprises a pedal (4), a pedal (4a), a driving swing rod (7), a driving shaft (8), a follow-up swing rod (9) and a bracket (11); the pedal (4) and the pedal (4a) are respectively hinged with two ends of the driving swing rod (7) and the servo swing rod (9), the middle part of the servo swing rod (9) is hinged with the bracket (11), the driving shaft (8) is supported by the bracket (11), and the driving shaft (8) is fixedly connected with the middle part of the driving swing rod (7);

the support (11), the driving swing rod (7), the follow-up swing rod (9), the pedals (4) and the pedals (4a) form two parallelogram link mechanisms which use the support (11) as a shared edge in a vertical plane, and the pedal faces (4b) and (4c) of the pedals (4) and (4a) are always in a horizontal state in the swinging process;

the transmission system (2) comprises a first bevel gear (22), a second bevel gear (23), a third bevel gear (24), a rear shaft (28), two bearing seats (25, 25a), two rear wheels (26, 27) and a fixed seat (21); the first bevel gear (22) is supported and positioned through a fixed seat (21) and is connected with the driving shaft (8), the first bevel gear (22) is simultaneously meshed with a second bevel gear (23) and a third bevel gear (24), one-way clutches (23a and 24a) embedded in the second bevel gear (23) and the third bevel gear (24) are installed on a rear shaft (28), the rear shaft (28) is supported by two bearing seats (25 and 25a), and two ends of the rear shaft (28) are respectively connected with rear wheels (26 and 27).

2. Pendulum-driven pedal bicycle according to claim 1, characterized in that the bracket (11) is fixedly connected to the frame (3) and the drive shaft (8) is supported by means of a bearing (16) mounted on the bracket (11).

3. The swing rod driving type pedal bicycle according to claim 1, wherein the pedal (4) and the pedal (4a) are respectively provided with a pedal surface (4b), a pedal surface (4c) and connecting holes arranged up and down below the pedal surface, the pedal (4b) and the pedal surface (4c) are respectively hinged with two ends of the driving swing rod (7) through the upper connecting holes and are respectively hinged with two ends of the follow-up swing rod (9) through the lower connecting holes, the pedal surface (4b) and the pedal surface (4c) are anti-skid surfaces, and the surface can be a pattern with anti-skid function or a non-metal anti-skid material.

4. The pendulum-driven pedal bicycle according to claim 1, wherein the fixing base (21) is fixedly connected to the frame (3) and supports and positions the first bevel gear (22) via a bearing (21a) mounted on the fixing base (21).

5. The swing rod driven pedal bicycle according to claim 1, wherein the one-way clutches (23a, 24a) embedded in the second bevel gear (23) and the third bevel gear (24) can be one-way bearings or one-way ratchets or members with characteristics of one-way transmission of torque and opposite direction relative rotation without transmission of torque, the one-way clutches (23a, 24a) of the second bevel gear (23) and the third bevel gear (24) are mounted on the rear axle (28) through key connection, and the one-way clutches (23a) and the one-way clutches (24a) transmit torque in the same direction.

6. The swing rod driving type pedal bicycle according to claim 1, wherein the bearing seat (25) and the bearing seat (25a) are oppositely arranged at two sides of the fixed seat (21), and the rear axle (28) is supported and positioned by the bearings (25b) respectively embedded on the bearing seat (25) and the bearing seat (25 a).

7. The pendulum-driven pedal bicycle according to claim 1, wherein the rear axle (28) is connected at both ends to the rear wheel (26) and the rear wheel (27) by a screw thread having a direction opposite to the direction of rotation of the respective rear wheel.

8. The pendulum-driven pedal bicycle according to claim 1, wherein the drive pendulum (7) or the bracket (11) is provided with a stop (7a), and the stop (7a) is preferably made of an elastic non-metallic material when the drive pendulum (3) is in the extreme pendulum position and the stop (7a) is in contact with the bracket (11) or the drive pendulum (7).

9. Pendulum-driven pedal bicycle according to claim 1, wherein the transmission system (2) is provided with a protective cover (32), the protective cover (32) preferably being fixed to the holder (21) by means of screws (33) to prevent dust and debris from entering the gear mesh.