Bicycle power assisting device

Abstract

The utility model provides a bicycle power assisting device. The bicycle power assisting device comprises a main shaft 1, a main gear 2, a power storage wheel 3, a reverse ratchet mechanism 4, a linkage wheel 5, a linkage rope 6 and a power storage device 7. The main gear 2 and the reverse ratchet mechanism 4 are respectively fixed on the bicycle main shaft 1, and the outer side of the reverse ratchet mechanism 4 is fixed in the power storage wheel 3. One end of the linkage rope 6 is fixed on the power storage wheel 3, the middle of the linkage rope 6 turns through the linkage wheel 5, and the other end of the linkage rope 6 is fixed on the power storage device 7. The bicycle gear is simple in structure, low in cost and convenient to disassemble, and the acting force generated when the bicycle gear rotates backwards is fully utilized. By changing the time difference of energy storage and energy release of the bicycle and changing the length of force arms of energy storage and energy release of the bicycle, the long-term and good power assisting effect of the bicycle is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of bicycles, and in particular relates to a bicycle power-assisting device and a power-assisting bicycle. Background Art

[0002] In the existing bicycle driving technology, there are several ways to obtain kinetic energy, such as human power, fuel and electric power, but each method has its shortcomings: human power is limited by physical fitness, and existing vehicles cannot travel long distances or carry loads when driven by human power; fuel driving has a series of problems in storage and pollution; electric driving seems convenient, but in fact, the problems it brings about in terms of electricity storage and pollution also exist.

[0003] In bicycle gear boosting mechanisms, the force is set to forward force, and the backward force has always been ignored or regarded as useless, and has little practical significance in real life. Summary of the invention

[0004] In view of this, the present invention aims to propose a bicycle power-assisting device and a power-assisting bicycle, which have low cost, simple structure, and are easy to disassemble. The device makes full use of the backward kinetic energy of the bicycle pedal to store power, and then releases the kinetic energy during the forward movement of the bicycle. During the process of storing and releasing power, the change in the length of the force arm is used to increase the forward power and stroke of the bicycle, and the effect is good.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A bicycle power assist device, 1-main shaft, 2-main gear, 3-power storage wheel, 4-reverse ratchet mechanism, 5-linking wheel, 6-linking rope, 7-power storage device, 8-rear ratchet gear, 9-bicycle chain, 10-rear shaft, 11-bicycle frame, 12-rotating plate, 13-spring sheet, 14-pawl, 15-rattle shaft, 16-ratchet, (Explanation: the reverse ratchet mechanism 4 includes a rotating plate 12, a spring sheet 13, a pawl 14, a ratchet shaft 15 and a ratchet 16)

[0007] When the bicycle pedal moves forward, the bicycle main shaft 1 drives the main gear 2 and the rotating disk 12 inside the reverse ratchet mechanism 4 to rotate forward at the same time. The rotation of the main gear 2 drives the rotation of the rear ratchet gear 8 through the bicycle chain 9, thereby driving the rotation of the bicycle rear axle 10 to realize the forward movement of the bicycle; the rotating disk 12 inside the reverse ratchet mechanism 4 rotates forward, which will drive the ratchet 14 to rotate forward and cause the spring sheet 13 to deform. Due to the reaction force generated by the deformation of the spring sheet 13, the ratchet 14 will be continuously pushed to return to the initial position unchanged; at this time, the ratchet 14 will not generate a driving force on the teeth of the ratchet 16, and the reverse ratchet mechanism 4 will not act.

[0008] When the bicycle pedal moves backward, the bicycle main shaft 1 drives the main gear 2 and the reverse ratchet mechanism 4 to move backward at the same time. The main gear 2 drives the bicycle chain 9 to rotate backward. Since the rear ratchet gear 8 is installed in the rear wheel of the bicycle, the rear axle 10 of the bicycle does not move at this time. At the same time, the reverse rotation of the main shaft 1 drives the reverse rotation of the rotating disk 12, and the reverse rotation of the rotating disk 12 drives the reverse rotation of the ratchet 14, and meshes with the teeth inside the ratchet 16, thereby driving the reverse rotation of the reverse ratchet mechanism 4 as a whole. The rotation of the reverse ratchet mechanism 4 drives the power storage wheel 3 fixed on its outer side to rotate backward, further causing the linkage rope 6 to perform a winding action. At the same time, the linkage rope 6 drives the stretching action of the power storage device 7 through the steering of the linkage wheel 5, completing the energy storage action of the power storage device.

[0009] When the bicycle pedal moves forward again, the potential energy stored in the power storage device 7 will be released, driving the linkage rope 6 to move, and releasing part of the rope wrapped around the power storage wheel 3 after passing through the steering wheel 5, so that the power storage wheel 3 generates a force to rotate forward, and the internal teeth of the ratchet 16 embedded in the power storage wheel 3 engage with the pawl 14, thereby pushing the rotating disk 12 to rotate forward, and the rotating disk 12 drives the internal fixed main shaft 1 to rotate forward, and further drives the main gear 2 to move forward through the main shaft 1, thereby realizing the forward power-assisting function of the bicycle.

[0010] The main gear 2 and the bicycle main shaft 1, and the rotating disk 12 and the bicycle main shaft 1 are all nested and fixedly connected; the rotating disk 12 and the pawl 14 are movably connected, and the pawl 14 and the ratchet 16 are meshedly connected. The power storage wheel 3 is sleeved and fixed on the outer ring surface of the ratchet 16, and the two are concentrically arranged. The rotating disk 12 is provided with a pawl shaft 15 near the outer edge, and the pawl is rotatably arranged on the pawl shaft 15, and is supported by the spring sheet 13 so that the position of the pawl 14 always remains in contact with the ratchet teeth on the inner side of the ratchet 16. The bicycle main shaft 1 passes through the inner holes of the rotating disk 12 and the main gear 2 respectively, and is fixedly connected thereto.

[0011] The linkage wheel 5 and the force storage device 7 are both fixed on the bicycle frame. The bicycle force storage device 7 is an elastic device such as a spring, but is not limited to a spring.

[0012] A power-assisted bicycle comprises a frame and the bicycle power-assisted device as described above arranged on the frame. Compared with the prior art, the bicycle power-assisted device and the power-assisted bicycle of the present invention have the following advantages:

[0013] 1. Make full use of the force and time generated when the bicycle pedal rotates backward. Through the reasonable coordination between gears and the transformation of torque, the energy obtained is stored in the power storage device, which not only utilizes the space for the pedal to rotate backward, but also saves the time of empty pedaling, which is more time-saving and labor-saving than existing bicycles;

[0014] 2. The potential energy is stored in the power storage device, and the potential energy is gradually converted into kinetic energy of the vehicle during the movement of the vehicle, thereby assisting the movement of the bicycle;

[0015] 3. The device has low cost, simple structure, and fully utilizes the backward force of the bicycle pedal to achieve the power-assisting effect of the bicycle without affecting the normal forward movement of the bicycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 A transmission principle diagram of a bicycle power assist device according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic structural diagram of a power-assisted bicycle according to an embodiment of the present invention;

[0019] Figure 3 The present invention is a schematic structural diagram of an internally meshing ratchet mechanism in a bicycle power-assisting device according to an embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 1-main shaft, 2-main gear, 3-power storage wheel, 4-reverse ratchet mechanism, 5-interlocking wheel, 6-interlocking rope, 7-power storage device, 8-rear ratchet gear, 9-bicycle chain, 10-rear axle, 11-bicycle frame, 12-rotating plate, 13-spring sheet, 14-pawl, 15-pawl shaft, 16-ratchet DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0024] like Figure 1-Figure 2As shown, a bicycle power-assisting device comprises a main shaft 1, a main gear 2, a power storage wheel 3, a reverse ratchet mechanism 4, a linkage wheel 5, a linkage rope 6 and a power storage device 7, wherein the main gear 2 and the rotating disk 11 are both fixed on the main shaft 1 of the bicycle, the power storage wheel 3 is fixedly connected to the outside of the ratchet 16, the linkage wheel 5 and the power storage device 7 are both fixed on the bicycle frame 11, the two ends of the linkage rope 6 are respectively connected to the power storage wheel 3 and the power storage device 7, and the power storage wheel 3, the linkage wheel 5 and the power storage device 7 are in the same plane; the rear ratchet gear 8 is sleeved and fixed on the rear axle 10, and is in the same plane as the main gear 2.

[0025] like Figure 1-Figure 3 As shown, the rotating disk 12 is fixed on the main shaft 1, and the power storage wheel 3 is connected to the main shaft 1 through a reverse ratchet mechanism 4; the reverse ratchet 4 is specifically described as follows: the ratchet mechanism 4 includes a ratchet 16, a ratchet pawl shaft 15, a ratchet 14, a spring sheet 13 and a rotating disk 12, the ratchet mechanism 4 is an annular disk structure, the rotating disk 12 is arranged inside the ratchet 4, and the two are arranged concentrically, and serrated grooves are evenly arranged on the inner ring wall surface of the ratchet 16, and a ratchet pawl shaft 15 is provided near the outer edge of the rotating disk 12, and the ratchet 14 is provided with a spring sheet 13. 14 is rotatably arranged on the pawl shaft 15, the pawl 14 is meshed with the serrated groove on the inner ring wall of the ratchet wheel 16, and a spring sheet 13 supporting the pawl 14 is fixed on the rotating disk 12; the working principle of the reverse ratchet mechanism 4 is as follows: when the rotating disk 12 is the active part: the rotating disk 12 rotates clockwise, driving the ratchet wheel 16 to rotate clockwise, the rotating disk 12 rotates counterclockwise, and the ratchet wheel 16 is stationary; when the ratchet wheel 16 is the active part: the ratchet wheel 16 rotates counterclockwise to drive the rotating disk 12 to rotate counterclockwise, the ratchet wheel 16 rotates clockwise, and the rotating disk 12 is stationary;

[0026] When the bicycle pedal moves forward, the bicycle main shaft 1 drives the main gear 2 and the reverse ratchet mechanism 4 to rotate forward at the same time. The rotation of the main gear 2 drives the rotation of the rear ratchet gear 8 through the bicycle chain 9, thereby driving the rotation of the bicycle rear shaft 10 to realize the forward movement of the bicycle; the reverse ratchet mechanism 4 rotates forward, and the rotating disk 12 drives the ratchet 14 to rotate forward, causing the spring sheet 13 to deform. Due to the reaction force generated by the deformation of the spring sheet 13, the ratchet 14 will be continuously pushed to restore to the initial position unchanged; at this time, the ratchet 14 does not push the teeth in the ratchet 16, and the reverse ratchet mechanism 4 does not rotate.

[0027] When the bicycle pedal moves backward, the bicycle main shaft 1 drives the main gear 2 and the reverse ratchet mechanism 4 to move backward at the same time. The main gear 2 drives the bicycle chain 9 to rotate backward. Since the rear ratchet gear 8 is installed in the rear wheel of the bicycle, the rear axle 10 of the bicycle does not move at this time. At the same time, the reverse rotation of the main shaft 1 drives the reverse rotation of the rotating disk 12, and the reverse rotation of the rotating disk 12 drives the reverse rotation of the ratchet 14, which meshes with the teeth inside the ratchet 16, thereby promoting the reverse rotation of the reverse ratchet mechanism 4. The rotation of the reverse ratchet mechanism 4 drives the power storage wheel 3 fixed on its outer side to rotate backward, further causing the linkage rope 6 to perform a winding action. At the same time, the linkage rope 6 drives the power storage device 7 to move through the steering of the linkage wheel 5, completing the energy storage process of the power storage device.

[0028] When the bicycle pedal moves forward again, the potential energy stored in the power storage device 7 will be released, pulling the linkage rope 6, and driving the part of the rope wrapped around the power storage wheel 3 to release through the steering wheel 5, so that the power storage wheel 3 generates a force to rotate forward. At this time, the teeth of the ratchet 16 nested inside the power storage wheel 3 engage with the pawl 14, thereby pushing the rotating disk 12 to rotate forward. The rotating disk 12 also drives the internal fixed main shaft 1 to rotate forward, and further drives the main gear 2 to move forward through the main shaft 1, thereby realizing the forward power-assisting function of the bicycle.

[0029] The main gear 2 and the bicycle main shaft 1, and the rotating disk 12 and the bicycle main shaft 1 are all nested and fixedly connected; the rotating disk 12 and the pawl 14 are movably connected, and the pawl 14 and the ratchet 16 are meshedly connected. The power storage wheel 3 is sleeved and fixed on the outer ring surface of the ratchet 16, and the two are concentrically arranged. The rotating disk 12 is provided with a pawl shaft 15 near the outer edge, and the pawl is rotatably arranged on the pawl shaft 15, and is supported by the spring sheet 13 so that the position of the pawl 14 always remains in contact with the ratchet teeth on the inner side of the ratchet 16. The bicycle main shaft 1 passes through the inner holes of the rotating disk 12 and the main gear 2 respectively, and they are all fixedly connected.

[0030] The linkage wheel 5 and the force storage device 7 are both fixed on the bicycle frame. The bicycle force storage device 7 is an elastic device such as a spring, but is not limited to a spring, and is fixed on the bicycle frame 11.

[0031] The energy storage process of the bicycle power-assisting device: when the bicycle main shaft 1 rotates clockwise, since the bicycle main shaft 1 is fixedly connected to the rotating disk 12, the rotating disk 12 drives the ratchet 14 to rotate clockwise, and the ratchet 14 drives the ratchet 16 to rotate clockwise through the meshing action, so as to realize the clockwise rotation of the power storage wheel 3. The rotation of the power storage wheel 3 drives the linkage rope 6 to be wound, and the linkage rope 6 pulls the power storage device 7 through the linkage wheel 5 to realize the energy storage process of the bicycle. During the energy storage process of the power storage device 7, the main gear 2 drives the bicycle chain 9 to move clockwise, and the chain 9 drives the rear ratchet gear 8 to rotate clockwise, but due to the ratchet action principle, the rear axle 10 of the bicycle does not move at this time;

[0032] Release process: when the kinetic energy of the power storage device 7 is released, it drives the movement of the linkage rope 6, and the linkage rope 6 drives the counterclockwise rotation of the power storage wheel 3 through the steering wheel 5. When the power storage wheel 3 rotates counterclockwise, the ratchet 16 fixed on the inner ring rotates reversely at the same time, and the ratchet teeth inside the ratchet 16 engage the pawl 14, driving the pawl 14 to rotate reversely, and the pawl 14 drives the rotating disk 12 to rotate reversely, and the rotating disk 12 further drives the main shaft 1 to rotate reversely, and the reverse rotation of the main shaft 1 also drives the reverse rotation of the main gear 2. When the main gear 2 rotates reversely, it drives the bicycle chain 9 to move counterclockwise, and further the chain 9 drives the rear ratchet gear 8 to rotate counterclockwise, thereby driving the bicycle rear axle 10 fixed inside the rear ratchet gear 8 to move reversely, so as to realize the forward movement of the bicycle.

[0033] When not riding, or when the bicycle does not need energy storage assistance, the bicycle pedals can be rotated counterclockwise normally. When the bicycle energy storage assistance is needed, the bicycle pedals can be rotated clockwise to complete the bicycle energy storage process. When the bicycle springboard stops rotating or the pedals are rotated counterclockwise again, the bicycle power assistance function can be realized, making riding more labor-saving;

[0034] When the force storage device 7 is in a locked state (maximum limit), the bicycle spindle 1 cannot rotate backward; when the force storage device 7 is in a completely loose state (minimum limit), the bicycle spindle 1 can move forward normally.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bicycle power assist device, characterized in that: The bicycle comprises a main shaft (1), a main gear (2), a power storage wheel (3), a reverse ratchet mechanism (4), a linkage wheel (5), a linkage rope (6) and a power storage device (7); the reverse ratchet mechanism (4) is sleeved on the main shaft (1), the power storage wheel (3) is fixedly sleeved outside the reverse ratchet mechanism (4), one end of the linkage rope (6) is fixed on the power storage wheel (3), and the other end is connected to one end of the power storage device (7), the linkage wheel (5) and the power storage device (7) are fixed on a bicycle frame (11), the main gear (2) is fixedly sleeved on the main shaft (1), the rear ratchet gear (8) is fixed on the rear axle (10), the main gear (2) and the rear ratchet gear (8) are on the same plane, and the reverse ratchet mechanism (4), the power storage wheel (3) and the linkage wheel (5) are in the same plane; The main gear (2) and the reverse ratchet mechanism (4) are fixed on the same main shaft (1); the main gear (2) is connected and transmitted to the rear ratchet gear (8) via a bicycle chain (9); The reverse ratchet mechanism (4) comprises: a ratchet (16), a ratchet pawl rotating shaft (15), a ratchet pawl (14), a spring sheet (13) and a rotating disk (12); the ratchet (16) and the rotating disk (12) are both annular disk structures; the rotating disk (12) is arranged in the inner ring of the ratchet (16), and the two are arranged concentrically; sawtooth grooves are evenly arranged on the inner ring wall surface of the ratchet (16); a ratchet pawl rotating shaft (15) is arranged near the outer edge of the rotating disk (12); the ratchet pawl (14) is rotatably arranged on the ratchet pawl rotating shaft (15); the ratchet pawl (14) is meshed with the sawtooth groove on the inner ring wall surface of the ratchet (16); and a spring sheet (13) supporting the ratchet pawl (14) is fixedly arranged on the rotating disk (12).

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