Device for converting reciprocating rectilinear motion into one-way circular motion for bicycle and engine

Abstract

The invention relates to a device for converting reciprocating rectilinear motion into one-way circular motion for a bicycle and an engine, and belongs to the technical field of motion mode conversion. A device for converting reciprocating rectilinear motion into one-way circular motion on a bicycle comprises a first motion assembly, a second motion assembly, a third motion assembly and a fourth motion assembly, the fixed frame is fixed on a front frame of the bicycle; the upper end of the pulley yoke assembly is fixed on the rear frame of the bicycle, and two sides of the lower end are connected with the first movement assembly. Linear reciprocating motion is adopted to replace a traditional crankshaft and crank transmission mode, acting is facilitated, and the output power is stable; the power output device is simple in structure, low in production and manufacturing cost, stable in transmission ratio, high in transmission efficiency, little in mechanical abrasion, long in service life, beneficial to maintenance, suitable for multi-scene power output of bicycles, engine pistons and the like, easy to execute and beneficial to wide popularization.

Description

Technical Field

[0001] The present invention relates to a device for converting reciprocating linear motion into unidirectional circular motion for a bicycle and an engine, and belongs to the technical field of motion mode conversion. Background Art

[0002] A bicycle is an environmentally friendly and convenient means of transportation. The traditional driving method is to pedal the left and right pedals with feet, drive the chainring to rotate through a crank, and the chainring transmits power to the flywheel on the rear wheel axle through a chain, so that the rear wheel rotates forward. The disadvantage of this driving method is that as the crank rotates, the working force arm is the largest when the pedaling direction is perpendicular to the crank, and the smallest when the pedaling direction is parallel to the crank (i.e., the dead point position). The length of the power arm continuously changes from the largest to zero and then from zero to the largest. The actual pedaling output power of the rider is uneven, and the working efficiency is low.

[0003] Piston engines or generators generally adopt crankshaft transmission. The reciprocating motion of the piston drives the crankshaft to move. When the crankshaft does work, the size of the force arm also changes reciprocally, being zero at the dead point position, and there are huge fluctuations in the output power. There is a disadvantage of low working efficiency, and due to uneven force, vibrations are generated, and the chance of wear is large, requiring high wear-resistant materials. Coupled with the complex process of manufacturing the crankshaft, the equipment cost is high.

[0004] Therefore, there is an urgent need for a new device for converting reciprocating linear motion into unidirectional circular motion to solve the above technical problems. Summary of the Invention

[0005] Technical Objective: In order to overcome the deficiencies in the prior art, the present invention provides a device for converting reciprocating linear motion into unidirectional circular motion for a bicycle and an engine.

[0006] Technical Solution: To achieve the above objective, the present invention discloses a device for converting reciprocating linear motion into unidirectional circular motion for a bicycle and an engine.

[0007] A device for converting reciprocating linear motion into unidirectional circular motion for a bicycle includes

[0008] A first motion component, which is fixed on a fixing frame;

[0009] The fixing frame, which is fixed on the front frame of the bicycle;

[0010] A pulley frame assembly, the upper end of which is fixed on the rear frame of the bicycle, and the two sides of the lower end are connected to the first motion component.

[0011] Preferably, the first motion component includes a first output shaft, and ratchet assemblies A and B are respectively arranged at both ends of the first output shaft at positions outside the chainring of the bicycle. The outer teeth of the ratchet assemblies A and B are respectively meshed and connected with a rack A and a rack B.

[0012] Preferably, the ratchet assembly A includes a pawl disk A fixedly connected to the outer wall of the first output shaft. An external gear A is arranged outside the pawl disk A. There are two pawls A between the pawl disk A and the external gear A. The free end of the pawl A always presses against the internal teeth of the external gear A. The rotating end of the pawl A is rotatably connected to the outer edge of the pawl disk A. The two pawls A are symmetrically arranged along the diameter direction of the pawl disk A.

[0013] The ratchet assembly B includes a pawl disk B fixedly connected to the outer wall of the first output shaft. An external gear B is arranged outside the pawl disk B. There are two pawls B between the pawl disk B and the external gear B. The free end of the pawl B always presses against the internal teeth of the external gear B. The rotating end of the pawl B is rotatably connected to the outer edge of the pawl disk B. The two pawls B are symmetrically arranged along the diameter direction of the pawl disk B.

[0014] Preferably, a compression spring A is further arranged between the pawl A and the pawl disk A; a compression spring B is further arranged between the pawl B and the pawl disk B.

[0015] Preferably, the pulley frame assembly includes a pulley frame, a pulley rotatably connected to the pulley frame, a belt wound around the pulley, and foot pedals respectively fixed to the outer sides of the rack A and the rack B. The two ends of the belt are respectively connected to the rack A and the rack B.

[0016] A reciprocating linear motion to unidirectional circular motion device for an engine or a generator, comprising

[0017] A second motion assembly, located inside the cylinder block and the crankcase;

[0018] A spring, placed in the circular groove and connected to the lower end of the second motion assembly;

[0019] A circular groove, arranged at the bottom of the crankcase.

[0020] Preferably, the second motion assembly includes a second output shaft. A plurality of ratchet assemblies are connected to the second output shaft. The external teeth of the ratchet assemblies are meshed and connected to a rack. The upper end of the rack is connected to the lower end of the piston. The lower end of the rack is located in the circular groove and abuts against the spring through a small piston.

[0021] Preferably, two or more ratchet assemblies are connected to the second output shaft.

[0022] Preferably, the ratchet assembly includes a pawl disk fixedly connected to the outer wall of the second output shaft. An external gear is arranged outside the pawl disk. There are two pawls between the pawl disk and the external gear. The free end of the pawl always presses against the internal teeth of the external gear. The rotating end of the pawl is rotatably connected to the outer edge of the pawl disk. The two pawls are symmetrically arranged along the diameter direction of the pawl disk.

[0023] Preferably, a compression spring is further arranged between the pawl and the pawl disk.

[0024] Compared with the prior art, the technical effects of the present invention are as follows:

[0025] 1. By adopting a linear reciprocating motion to replace the traditional crankshaft and crank drive mode, it is beneficial for doing work and the output power is stable; the structure is simple, the production and manufacturing cost is low, the transmission ratio is stable, the transmission efficiency is high, the mechanical wear is less, the service life is long, it is conducive to maintenance, and it is applicable to power output in multiple scenarios such as bicycles and the crankshafts of piston engines (generators). It is easy to implement and is conducive to wide promotion.

[0026] 2. The force arm of the present invention is constant and there is no dead point. These two factors jointly ensure stable work output, solve the disadvantages of the prior art that the force arm constantly changes and there is a dead point. When used for bicycle drive, it can reduce the fatigue of cyclists, improve speed and durability, and when outputting torque in a piston engine (generator), it can improve output efficiency, reduce vibration and loss, and reduce production costs. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the overall structure of the reciprocating linear motion to single-direction circular motion device of the present invention for bicycles Figure 1 ;

[0028] Figure 2 It is a schematic diagram of the overall structure of the reciprocating linear motion to single-direction circular motion device of the present invention for bicycles Figure 2 ; (Remove the fixing bracket)

[0029] Figure 3 It is a schematic diagram of the structure of the first component;

[0030] Figure 4 It is Figure 3 a schematic diagram of the structure of the ratchet component A in

[0031] Figure 5 It is Figure 3 a schematic diagram of the structure of the ratchet component B in Figure 2 ;

[0032] Figure 6 It is a schematic diagram of the structure of the reciprocating linear motion to single-direction circular motion device of the present invention for engines or generators.

[0033] Figure 7 It is Figure 6 a schematic diagram of the structure of the second motion component in

[0034] Figure 8 It is Figure 7 a schematic diagram of the structure of the ratchet component in

[0035] Figure 9 It is Figure 2 a partial enlarged view at A in

[0036] Reference numerals: 1, the first moving component; 2, the fixing bracket; 3, the front bicycle frame; 4, the pulley bracket assembly; 5, the rear bicycle frame; 6, the first output shaft; 7, the bicycle chainring; 8, ratchet assembly A; 9, ratchet assembly B; 10, rack A; 11, rack B; 12, ratchet pawl disc A; 13, ratchet pawl A; 14, ratchet pawl disc B; 15, ratchet pawl B; 16, compression spring A; 17, compression spring B; 18, the second moving component; 19, the cylinder block; 20, the crankcase; 21, the spring; 22, the circular groove; 23, the second output shaft; 24, the ratchet assembly; 25, the rack; 26, the piston; 27, the ratchet pawl disc; 28, the ratchet pawl; 29, the compression spring; 30, the pulley bracket; 31, the pulley; 32, the belt; 33, the pedal; 34, ratchet gear A; 35, ratchet gear B; 36, the ratchet gear; 37, the spark plug; 38, the valve; 39, the small piston. Detailed implementation manners

[0037] The following combines the appended Figure 1 to the appended Figure 9 to describe the principles and features of the present invention. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0038] A reciprocating linear motion to unidirectional circular motion device for a bicycle, comprising

[0039] The first moving component 1, and the first moving component 1 is fixed on the fixing bracket 2;

[0040] The fixing bracket 2 is fixed on the front bicycle frame 3;

[0041] The pulley bracket assembly 4, the upper end of which is fixed on the rear bicycle frame 5, and the two sides of the lower end are connected to the first moving component 1.

[0042] The first moving component 1 includes a first output shaft 6. At the outer side positions of both ends of the first output shaft 6 and located outside the bicycle chainring 7, a ratchet assembly A 8 and a ratchet assembly B 9 are respectively provided. The outer teeth of the ratchet assembly A 8 and the ratchet assembly B 9 are respectively meshed and connected with a rack A 10 and a rack B 11.

[0043] The ratchet assembly A 8 includes a ratchet pawl disc A 12 fixedly connected to the outer wall of the first output shaft 6. A ratchet gear A 34 is arranged outside the ratchet pawl disc A 12. Two ratchet pawls A 13 are provided between the ratchet pawl disc A 12 and the ratchet gear A 34. The free end of the ratchet pawl A 13 always presses against the inner teeth of the ratchet gear A 34. The rotating end of the ratchet pawl A 13 is rotatably connected to the outer edge of the ratchet pawl disc A 12. The two ratchet pawls A 13 are symmetrically arranged along the diameter direction of the ratchet pawl disc A 12;

[0044] The ratchet assembly B9 includes a pawl disk B14 fixedly connected to the outer wall of the first output shaft 6. An external ratchet gear B35 is provided outside the pawl disk B14. Two pawls B15 are provided between the pawl disk B14 and the ratchet gear B35. The free end of the pawl B15 always presses against the internal teeth of the ratchet gear B35. The rotating end of the pawl B15 is rotatably connected to the outer edge of the pawl disk B14. The two pawls B15 are symmetrically arranged along the diameter direction of the pawl disk B14.

[0045] A compression spring A16 is further provided between the pawl A13 and the pawl disk A12; a compression spring B17 is further provided between the pawl B15 and the pawl disk B14.

[0046] The pulley frame assembly 4 includes a pulley frame 30, a pulley 31 rotatably connected to the pulley frame 30, a belt 32 wound around the pulley 31, and pedal plates 33 respectively fixed to the outside of the rack A10 and the rack B11. The two ends of the belt 32 are respectively connected to the rack A10 and the rack B11.

[0047] The working principle of the reciprocating linear motion to unidirectional circular motion device for a bicycle is as follows:

[0048] When riding a bicycle, step on the left and right pedal plates 33. The two pedal plates 33 drive the rack A10 and the rack B11 to move respectively. Under the action of the pulley 31 and the belt 32, the rack A10 and the rack B11 move downward / upward and upward / upward respectively.

[0049] When the rack A10 does work downward, the rack B11 moves upward for reset. At this time, the rack A10 drives the external teeth of the ratchet gear A34 to rotate clockwise. The internal teeth of the ratchet gear A34 drive the pawl disk A12 to rotate through the pawl A13. The pawl disk A12 drives the first output shaft 6 to rotate, and finally drives the bicycle forward; the rack B11 drives the external teeth of the ratchet gear B35 to rotate counterclockwise. Since the ratchet gear B35 and the pawl disk B14 are not engaged, the internal teeth of the ratchet gear B35 will not drive the pawl disk B14 to rotate counterclockwise through the pawl B15. This vertical external force work ends. The rack A10 reaches the lowest point, and the rack B11 is at the highest point.

[0050] When the rack B11 does work downward, the rack A10 moves upward for reset. At this time, the rack B11 drives the external teeth of the ratchet gear B35 to rotate clockwise. The internal teeth of the ratchet gear B35 drive the pawl disk B14 to rotate through the pawl B15. The pawl disk B14 drives the first output shaft 6 to rotate, and finally drives the bicycle forward; the rack A10 drives the external teeth of the ratchet gear A34 to rotate counterclockwise. Since the ratchet gear A34 and the pawl disk A12 are not engaged, the internal teeth of the ratchet gear A34 will not drive the pawl disk A12 to rotate counterclockwise through the pawl A13. This vertical external force work ends. The rack B11 reaches the lowest point, and the rack A10 is at the highest point.

[0051] Repeat this process continuously to convert the vertical external force into a one-way rotation of the main shaft.

[0052] A device for converting reciprocating linear motion into one-way circular motion for an engine or a generator, comprising

[0053] A second motion component 18, located within the cylinder block 19 and the crankcase 20;

[0054] A spring 21, placed within the circular groove 22 and connected to the lower end of the second motion component 18;

[0055] The circular groove 22 is provided at the bottom of the crankcase 20, where only the lower half of the crankcase 20 is drawn in Figure 6 and Figure 7 the rest is not drawn.

[0056] The second motion component 18 includes a second output shaft 23. A number of ratchet assemblies 24 are connected to the second output shaft 23. The outer teeth of the ratchet assemblies 24 are meshed and connected to a rack 25. The upper end of the rack 25 is connected to the lower end of the piston 26. The lower end of the rack 25 is located within the circular groove 22 and is abutted against the spring 21 through a small piston 39, thereby fixing the moving direction of the rack 25 and ensuring that the rack 25 can perform linear up-and-down motion.

[0057] Four ratchet assemblies 24 are connected to the second output shaft 23.

[0058] The ratchet assembly 24 includes a pawl disc 27 fixedly connected to the outer wall of the second output shaft 23. An external gear 36 is provided outside the pawl disc 27. Two pawls 28 are provided between the pawl disc 27 and the external gear 36. The free end of the pawl 28 always presses against the internal teeth of the external gear 36. The rotating end of the pawl 28 is rotatably connected to the outer edge of the pawl disc 27. The two pawls 28 are symmetrically arranged along the diameter direction of the pawl disc 27.

[0059] A compression spring 29 is further provided between the pawl 28 and the pawl disc 27.

[0060] The working principle of the device for converting reciprocating linear motion into one-way circular motion for an engine or a generator is as follows:

[0061] In this embodiment, a four-cylinder engine is taken as an example. The spark plug 37 is ignited in sequence by an electronic control. The cylinder block 19 expands and the piston 26 is pushed outwards. The piston 26 drives the rack 25 to do work downward. The rack 25 drives the ratchet gear 36 meshed with it to rotate clockwise or counterclockwise. The ratchet gear 36 drives the second output shaft 23 to rotate. During the downward movement of the rack 25, the spring 21 is gradually compressed until it is compressed to the shortest. The elastic force of the spring 21 reaches the maximum. At this time, the work of this cylinder block ends, the valve 38 opens, and the spring 21 starts to reset. During the reset process of the spring 21, it pushes the rack 25 to move upward. The rack 25 drives the ratchet gear 36 meshed with it to rotate counterclockwise or clockwise. However, since the ratchet gear 36 is disengaged from the ratchet pawl disc 27, the ratchet pawl disc 27 does not rotate accordingly. After the spring 21 is completely reset, the cylinder block 19 starts the next work cycle, and so on.

[0062] In the present invention, since the force arm for doing work is the distance between the rack 25 and the second output shaft 23, which is the radius of the ratchet gear 36, the force arm is constant. At the same time, the four racks 25 at any position can interactively move up and down, and there is no dead point.

[0063] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A reciprocating linear motion to unidirectional circular motion device for a bicycle, characterized in that: including a first motion component (1), which is fixed on a fixed frame (2); the fixed frame (2), which is fixed on the front frame (3) of the bicycle; a pulley frame assembly (4), with its upper end fixed on the rear frame (5) of the bicycle and both sides of its lower end connected to the first motion component (1).

2. The reciprocating linear motion to unidirectional circular motion device for a bicycle according to claim 1, characterized in that: The first motion component (1) includes a first output shaft (6). At both ends of the first output shaft (6) at positions outside the chainring (7) of the bicycle, a ratchet assembly A (8) and a ratchet assembly B (9) are respectively provided. The outer teeth of the ratchet assembly A (8) and the ratchet assembly B (9) are respectively meshed and connected with a rack A (10) and a rack B (11).

3. The reciprocating linear motion to unidirectional circular motion device for a bicycle according to claim 2, wherein: The ratchet assembly A (8) includes a pawl disc A (12) fixedly connected to the outer wall of the first output shaft (6). A ratchet gear A (34) is arranged outside the pawl disc A (12). Between the pawl disc A (12) and the ratchet gear A (34), two pawls A (13) are provided. The free end of the pawl A (13) always presses against the inner teeth of the ratchet gear A (34). The rotating end of the pawl A (13) is rotatably connected to the outer edge of the pawl disc A (12). The two pawls A (13) are symmetrically arranged along the diameter direction of the pawl disc A (12); The ratchet assembly B (9) includes a pawl disc B (14) fixedly connected to the outer wall of the first output shaft (6). A ratchet gear B (35) is arranged outside the pawl disc B (14). Between the pawl disc B (14) and the ratchet gear B (35), two pawls B (15) are provided. The free end of the pawl B (15) always presses against the inner teeth of the ratchet gear B (35). The rotating end of the pawl B (15) is rotatably connected to the outer edge of the pawl disc B (14). The two pawls B (15) are symmetrically arranged along the diameter direction of the pawl disc B (14).

4. The reciprocating linear motion to unidirectional circular motion device for a bicycle according to claim 3, characterized in that: A compression spring A (16) is further provided between the pawl A (13) and the pawl disc A (12); a compression spring B (17) is further provided between the pawl B (15) and the pawl disc B (14).

5. The reciprocating linear motion to unidirectional circular motion device for a bicycle according to claim 1, characterized in that: The pulley frame assembly (4) includes a pulley frame (30), a pulley (31) rotatably connected to the pulley frame (30), a belt (32) wound around the pulley (31), and foot pedals (33) respectively fixed on the outer sides of the rack A (10) and the rack B (11). The two ends of the belt (32) are respectively connected to the rack A (10) and the rack B (11).

6. A reciprocating linear motion to unidirectional circular motion device for an engine or a generator, characterized in that: including a second motion component (18), which is located inside the cylinder block (19) and the crankcase (20); a spring (21), which is placed in a circular groove (22) and connected to the lower end of the second motion component (18); the circular groove (22), which is arranged at the bottom of the crankcase (20).

7. The reciprocating linear motion to unidirectional circular motion device for an engine or a generator according to claim 6, characterized in that: The second motion component (18) includes a second output shaft (23). A number of ratchet assemblies (24) are connected to the second output shaft (23). The outer teeth of the ratchet assemblies (24) are meshed and connected to a rack (25). The upper end of the rack (25) is connected to the lower end of a piston (26). The lower end of the rack (25) is located inside the circular groove (22) and abuts against the spring (21) through a small piston (39).

8. The reciprocating linear motion to unidirectional circular motion device for an engine or a generator according to claim 7, characterized in that: Two or more ratchet assemblies (24) are connected to the second output shaft (23).

9. The reciprocating linear motion to unidirectional circular motion device for an engine or a generator according to claim 8, characterized in that: The ratchet assembly (24) includes a pawl disk (27) fixedly connected to the outer wall of the second output shaft (23). A ratchet gear (36) is provided outside the pawl disk (27). Two pawls (28) are provided between the pawl disk (27) and the ratchet gear (36). The free end of the pawl (28) always presses against the internal teeth of the ratchet gear (36). The rotating end of the pawl (28) is rotatably connected to the outer edge of the pawl disk (27). The two pawls (28) are symmetrically arranged along the diameter direction of the pawl disk (27).

10. The reciprocating linear motion to unidirectional circular motion device for an engine or a generator according to claim 9, characterized in that: A compression spring (29) is further provided between the pawl (28) and the pawl disk (27).

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