TW202508903A - Bicycle energy storage power assisting system - Google Patents

Abstract

A bicycle energy storage power assisting system comprises a first and a second rotary transmission members rotated in conjunction with a crank arm, a power storage transmission member and a linkage control mechanism. A hollow outer tube is pivoted to a bicycle frame. A first driving fluted disc, a second driving fluted disc and a third driving fluted disc are respectively connected to the hollow outer tube and arranged at two sides of the bicycle frame. A crank mandrel is arranged coaxially in a hollow mandrel. A first case member is connected to the second fluted disc, and a second case member is connected to the crank mandrel. An energy storage unit is connected respectively to the first and second case members. A reception member is connected with the crank mandrel. The linkage control mechanism controls clutch effect of the linkage assembly via the control assembly, so that the first case member is rotated individually and the energy storage unit is controlled to store power. After power is fully stored, the first and second case members are rotated simultaneously, and the energy storage unit is controlled to output power to drive the first and second rotary transmission members to rotate simultaneously and provide additional power for moving the wheels forward. At riding, an user can select whether he wants to storage power to assist riding.

Description

Bicycle energy storage system

This invention relates to a bicycle, and in particular to an energy storage and power-assisting system for a bicycle.

Generally, bicycles are pedaled by human power. When riding for a long time, the terrain changes greatly, the load is heavy, or the older users will feel the heavy pedaling feeling, which makes it difficult to ride. Of course, in order to reduce the heavy pedaling feeling, the speed change system of the speed change bicycle can be used to reduce the heavy pedaling feeling of the feet. The principle of the speed change system is to use both feet to pedal, the crank connected to the pedals drives the front gear to rotate, and transmits the power to the flywheel (that is, the gear of the rear wheel) through the chain. The flywheel is connected to the rear wheel hub to drive the rear wheel to make the bicycle move forward. The transmission system includes the flywheel, the large plate, the front and rear gearshifters, the chain, and the left and right integrated brake levers. The emergence of the transmission drives the chain to different gears, thereby changing the gear ratio of pedaling. Facing different terrains, the most suitable gear ratio can be selected to save physical strength. In recent years, bicycles with auxiliary power have risen rapidly, among which the rise of electric bicycles is a great benefit to the public. However, electric bicycles need to be charged, and because they have batteries and circuit modules, they are larger in size and heavier in weight, making them relatively difficult to move. More importantly, when the battery of an electric bicycle is exhausted, the rider must overcome the combined weight of the body and the battery when riding or pushing it manually. If the road conditions are bad, it will be a big trouble for the rider. The industry has developed a speed change system for bicycles. The speed change system is based on changing the gear ratio. For the same pedaling, a larger gear ratio means a longer distance traveled, but it is also relatively more laborious. A smaller gear ratio means a shorter distance traveled, but it is relatively less laborious. Therefore, the size of the gear ratio should be changed according to the rider's situation at the time. He wants to be faster but more laborious, or slower but less laborious. However, the speed change system cannot add additional power to assist riding, and in order to save effort, it shortens the distance traveled. In response to this, bicycles equipped with non-electrically driven power assistance systems have also been widely developed. For example, Patent Nos. M447358 and I378881 of the Republic of China disclose bicycles with non-electrically driven power assistance systems. The bicycle of Republic of China patent No. M447358 discloses a handlebar with different functions controlled by both hands to store and release auxiliary power. When the vehicle is moving, the auxiliary power is stored by pressing the control handle, and no energy is stored when the control handle is released; the auxiliary power is released by pressing the release device, and no release is made when the release device is released. However, the two operating handles (the control handle and the release device) are both arranged at the handlebar near the brake handle, which greatly increases the weight of the hand operation, thereby affecting the safety of vehicle control. Because riding a bicycle is an activity that requires full use of the limbs, but in terms of safety, the hands determine the direction and brakes. Therefore, the design of the bicycle of the aforementioned known patent M447358, which excessively increases the burden of hand operation, can easily distract the rider while riding, greatly affecting safety. The bicycle of the Republic of China patent number I378881 discloses a transmission device applied to a bicycle. When the first section and the second section of the frame generate relative motion, the first and second sections are connected by a buffer, and the regulating tooth bar generates a reciprocating motion relative to the energy storage device to twist the spring. In addition, the pressure on the pressure plate is adjusted by adjusting the crank, and the energy storage method of the mainspring is determined by the pressure. When the pressure is small, the reverse rotation does not store energy, and when the pressure is large, the forward rotation does not store energy, so that the energy storage effect can be achieved in both forward and reverse directions. Regardless of the above-mentioned bicycles, there are the following problems: 1. The operation of controlling the auxiliary power must be adjusted by hand at any time, so that the rider must pay attention to the environment to adjust the operation while riding, ignoring the considerations of controllability and safety, which is not practical; 2. The power auxiliary system is installed on the frame, resulting in the need for special configuration design of the entire bicycle, and the structure is very complex, which makes the entire vehicle heavier; 3. Because the power auxiliary system is installed on the frame and is not directly connected to the spindle, it is necessary to add other structures to store power (such as chains or gears or buffers, etc.), which increases the power loss when the bicycle is moving. Therefore, how to solve the above problems and deficiencies is the direction that the inventor of this case and related manufacturers engaged in this industry are eager to study and improve.

In order to effectively solve the above problems, the main purpose of the present invention is to provide a bicycle energy storage and assist system in which a power storage transmission component is directly arranged on a spindle assembly. Another purpose of the present invention is to provide a method of controlling the power storage transmission component to store or output power through the clutch action of the linkage control mechanism. Another purpose of the present invention is to provide a method of storing or outputting power through the power storage transmission component after the power is fully stored, and to use the principle to make the first and second housings rotate simultaneously to output power and chain the first and third rotating transmission components to rotate synchronously, so as to provide the wheel group with power to drive forward. Another purpose of the present invention is to provide a linkage control mechanism with a simple and reliable structure. To achieve the above-mentioned purpose, the present invention provides a bicycle energy storage and power-assisting system, which is installed on a bicycle frame. The energy storage and power-assisting system includes: a first rotary transmission component, a second rotary transmission component, a power storage transmission component and a linkage control mechanism; wherein: The first rotary transmission component has a spindle assembly, a first transmission group and a rear wheel spindle arranged on the frame. The spindle assembly has a hollow outer tube, and a crank spindle is located in the hollow outer tube and is coaxially arranged on the frame with the hollow outer tube. The first transmission group has a first driving gear connected to one side of the hollow outer tube, and a first rear wheel gear is arranged on the rear wheel spindle and connected to a flywheel assembly on the rear wheel axle for active rotation. The crank spindle is assembled with a crank and is driven by the crank to rotate, and the rear wheel spindle is linked to rotate; The second rotation transmission component has a second drive gear plate disposed on the hollow outer tube and driven by the hollow outer tube to rotate in one direction, and a second rear wheel gear plate is connected to the rear wheel axle and rotates in conjunction with the rear wheel axle; The power storage transmission component has a first housing, a second housing, an energy storage element, a one-way brake and a third transmission group; wherein the second housing is connected to the crank axle and corresponds to the first housing, the energy storage element has two ends connected to the first housing and the second housing respectively, and the third transmission group has a third drive gear plate. Connected to the first housing and disposed on the other side of the hollow outer shaft, and a third rear wheel gear is connected to the rear wheel spindle and rotates in conjunction with the rear wheel spindle, the one-way brake is disposed on the crank spindle and connected to the second housing, so that the one-way brake is driven by the second housing to move in only one direction and thereby drive the crank spindle to operate; The linkage control mechanism includes a control assembly and a linkage assembly; the linkage assembly has a rod seat and a receiving member, the rod seat is respectively connected to the first drive gear plate and the crank, and a rod hole passes through the rod seat to be provided with a clamping rod, the receiving member is connected to the crank spindle and adjacent to the first drive gear plate; and the control assembly can operate the clamping rod to move in a connected or separated manner relative to the receiving member, so that the first and second housings rotate simultaneously or the first housing rotates alone, and controls the power storage transmission component to output power or store power. With the above structure, the present invention allows the rider to move the bicycle forward by stepping on the pedals to rotate them, and by operating the control assembly of the linkage control mechanism, the receiving member and the clamping rod of the linkage assembly can be relatively separated or connected, so that the first housing can rotate alone to control the energy storage element to store power, or after the power energy is fully stored, the first and second housings can rotate simultaneously, control the power storage transmission component to output power and link the first and second rotation transmission components to rotate synchronously through the rear wheel axle and the hollow outer tube, providing the wheel set and the foot pedaling to generate consistent power to drive forward, effectively reducing the power loss in the transmission. Furthermore, by directly installing the power storage transmission component on the spindle assembly, the bicycle frame does not need to be equipped with any additional structures, the overall structure is simplified and the weight is reduced, and the user can choose whether to store energy when riding, and the power storage transmission component is automatically controlled to output power after the power energy is fully stored, thereby providing riding assistance, effectively reducing the burden of hand control on the rider, and greatly improving safety and practicality in use.

The above-mentioned purpose of the present invention and its structural and functional characteristics will be explained according to the preferred embodiments of the attached drawings. Please refer to Figures 1A, 1B, 1C, 1D, 2A, 2B, 2C, 2D and 2E. As shown in the figure, the present invention discloses an energy storage and power-assisting system, which is arranged on a bicycle 10. The bicycle 10 includes a frame 13, a front wheel 11 and a rear wheel 12 respectively connected to the front and rear ends of the frame 13. The frame 13 has a five-way axle hole 131 and a rear wheel axle hole, and the front wheel 11 and the rear wheel 12 constitute a wheel set. The energy storage and power-assisting system includes a first rotary transmission component 2, a second rotary transmission component 40, a power storage transmission component 50 and a linkage control mechanism 6. The first rotation transmission component 2 includes a spindle assembly 20, a rear wheel spindle 23 and a first transmission group 30. The spindle assembly 20 has a hollow outer tube 21, and a crank spindle 22 is located in the hollow outer tube 21 and is coaxially arranged with the hollow outer tube 21 in the bottom bracket axle hole 131 of the frame 13. There is an annular gap 25 between the hollow outer tube 21 and the crank spindle 22. A bearing is arranged in the annular gap 25 so that the hollow outer tube 21 and the crank spindle 22 can rotate coaxially or synchronously. Furthermore, as shown in FIG. 2A , the left and right sides of the aforementioned hollow outer tube 21 are respectively a first coupling portion 211 and a second coupling portion 212, and the crank axle 22 has a left end 221 and a right end 222, and the length of the crank axle 22 is greater than the length of the hollow outer tube 21, so that after the two are coaxially arranged, the left end 221 protrudes from the first coupling portion 211, and the right end 222 protrudes from the second coupling portion 212. The left end 221 of the crank axle 22 is connected to a left crank 14, and the right end 222 of the crank axle 22 is connected to a right crank 15. A left foot pedal 141 is provided at one end of the left crank 14 away from the left end 221, and a right foot pedal 151 is provided at one end of the right crank 15 away from the right end 222. The left crank 14 and the right crank 15 are respectively assembled on both sides of the crank axle 22 and are driven to rotate by the left and right cranks 14 and 15. The rear wheel axle 23 is axially arranged in the rear wheel axle hole of the frame 13. The first transmission assembly 30 has a first drive gear 31, a first rear wheel gear 32 and a first coiled transmission strip 33. The first drive gear 31 is connected to the second joint portion 212 of the hollow outer tube 21 and is driven by the hollow outer tube 21 to rotate in both directions. The first rear wheel gear 32 is connected to the right outer surface of the rear wheel axle 23. The first coiled transmission strip 33 connects the first drive gear 31 and the first rear wheel gear 32. In this embodiment, the first rear wheel gear 32 can be a flywheel gear set, and the flywheel gear set includes a plurality of gears with different numbers of teeth stacked at intervals coaxially, but not limited to this. The first rear wheel gear 32 can also be a single-speed gear for active rotation. Referring to Figures 2C and 2E, the second rotation transmission component 40 has a second drive gear 41, a second rear wheel gear 42 and a second coil transmission bar 43. Among them, the second drive gear 41 has a second front unidirectional rotation element 411, which can be sleeved on the hollow outer tube 21 and driven by the hollow outer tube 21 to rotate unidirectionally. The second rear wheel sprocket 42 has a second rear two-way rotating element 421 therein, which can be sleeved on the rear wheel axle 23 and can be driven by the rear wheel axle 23 to rotate in two directions. The second coil transmission bar 43 connects the second drive sprocket 41 and the second rear wheel sprocket 42. In this embodiment, the wheel diameter of the second drive sprocket 41 is larger than the wheel diameter of the first drive sprocket 31. Referring to Figures 1B, 2A to 2E, the power storage transmission component 50 has a first housing 51, a second housing 52, an energy storage element 53, a one-way brake 54 and a third transmission group 55. The first shell 51 is connected to the hollow outer tube 21. In the present embodiment, the first shell 51 has a first protruding rod 511. The second shell 52 is connected to the outer surface of the crank axle 22 adjacent to the left end 221 and corresponds to the first shell 51. In the present embodiment, the second shell 52 has a second protruding rod 521, and after the second shell 52 and the first shell 51 are covered with each other, a receiving space is defined therebetween. The energy storage element 53 has two ends, namely a first fixing portion 531 and a second fixing portion 532, the first fixing portion 531 is sleeved on the first protruding rod 511, and the second fixing portion 532 is sleeved on the second protruding rod 521, so that the energy storage element 53 is accommodated in the receiving space. However, the energy storage element 53 may be connected to the first and second housings 51 and 52 in other ways , including but not limited to, such as locking, fitting, clamping, or welding, etc. to fix the energy storage element 53 to the first and second housings 51 and 52. In this embodiment, the energy storage element 53 is a coil spring or other metal element with elastic winding and reciprocating motion; the coil spring has the same winding direction as the travel direction of the bicycle. The one-way brake 54 is connected to the crankshaft 22 and fixed to the second housing 52, and the one-way brake 54 is far away from the first housing 51, so that the one-way brake 54 can be driven by the second housing 52 to move in only one direction and link the crankshaft 22 to move in the same direction. The third transmission assembly 55 includes a third driving gear 551, a third rear wheel gear 552 and a third coil transmission bar 553. The third drive gear 551 is connected to the first housing 51 at its side, and the first drive gear 551 has a third front unidirectional rotating element 5511 therein which can be sleeved on the first joint portion 211 of the hollow outer tube 21 and rotated by the hollow outer tube 21. The third rear wheel gear 552 has a third rear unidirectional rotating element 5521 therein which can be sleeved on the left outer surface of the rear wheel axle 23 and rotated by the rear wheel axle 23. The second and third coil transmission strips 553 and 553 connect the third drive gear 551 and the third rear wheel gear 552. Further, as shown in FIG. 2E , in this embodiment, the third front one-way rotating element 5511 is a one-way bearing and has a rotation direction and a stop direction, the stop direction is toward the front wheel 11, and the rotation direction is toward the rear wheel 12. The third rear one-way rotating element 5521 is a one-way bearing and has a rotation direction and a stop direction, the stop direction is toward the rear wheel 12, and the rotation direction is toward the front wheel 11. And the rotation directions of the third front one-way rotating element 5511 and the third rear one-way rotating element 5521 are opposite. Referring to FIGS. 2A, 2C, 3A, 5A, and 5B, the linkage control mechanism 6 includes a linkage assembly 60 and a control assembly 70. The linkage assembly 60 has a rod seat 61, a receiving member 62, a locking rod 63, and a two-way rotating member 64. The rod seat 61 is connected to the first driving gear plate 31 and the crank 15 respectively by a fixing member, and the rod seat 61 has a rod hole 611 for the locking rod 63 to be inserted into the rod hole 611 for radial (straight direction) movement. The locking rod 63 has an upper end 631 and a lower end 632, and the upper and lower ends 631 and 632 protrude from the upper and lower sides of the rod hole 611 respectively. The receiving member 62 is connected to the crank shaft 22 and adjacent to the first driving gear disc 31, and a recess 621 is formed on the receiving member 62 so that the lower end 632 of the locking rod 63 can be correspondingly inserted for locking or separation. The two-way rotating member 64 is sleeved on the hollow outer tube 21 and connected to the first drive gear plate 31 for synchronous rotation. In this embodiment, the two-way rotating member 64 is a two-way flywheel and has a first rotation direction and a second rotation direction. The first rotation direction is toward the front wheel 11, and the second rotation direction is toward the rear wheel 12. The two-way rotating member 64 has an inner ring and an outer ring. The inner ring is connected to the first drive gear plate 31 (connection method, such as using screws or welding or sleeve connection). The operating assembly 70 has a suction member 71, an operating member 72, a pull rope 73 and a push member 74. As shown in Figures 2A, 2B , As shown in FIG. 2C , one end of the suction member 71 is fixedly connected to the right crank 15 and is adjacent to the right foot pedal 151, and the other end of the suction member 71 diametrically corresponds to the upper end 631 of the clamping rod 63 on the rod seat 61 of the linkage assembly 60. The operating member 72 has a pull handle 721 for user operation (as shown in FIG. 1A ), and the pull rope 73 has two ends respectively connected between the pull handle 721 and the pushing member 74. The pushing member 74 is reciprocatingly arranged on the side of the frame 13 and maintained in a state of not interfering with the lifting and lowering of the pull rope 74. When the right foot pedal 151 is located above the right crank 15, the pushing member 74 and the suction member 71 are at the same horizontal position with each other (as shown in FIGS. 2A , 2B , and 3A ). In a normal state, when the pull handle 721 is locked relative to the operating member 72, the pull rope 73 pulls the push member 74 and causes the push member 74 to retract near the side of the frame 13 and separate from the suction member 71, so that the lower side of the suction member 71 and the upper end 631 of the clamping rod 63 form a clamping state with each other, thereby causing the clamping rod 63 to rise and its lower end 632 to separate from the recess 621 on the receiving member 62 (as shown in FIG. 5A ); on the contrary, when the user operates the pull handle 721 to release the operating member 72, the pull rope 73 is pulled tight. The push member 74 is driven to extend out of the frame 13 and contact the holding member 71 to move toward the right crank 15, so that the lower side of the holding member 71 and the upper end 631 of the clamping rod 63 are offset and not clamped, thereby causing the clamping rod 63 to descend and its lower end 632 to correspond to and be locked with the concave portion 621 on the receiving member 62 (as shown in FIG. 5B ). In addition, in this embodiment, the positional relationship of the aforementioned rod seat 61, the receiving member 62, and the clamping rod 63 is the same as the setting direction of the right crank 15, but it is not limited thereto, and the angle relationship between the rod seat 61 and the right crank 15 can also be adjusted according to riding habits, which will be described in detail later. Please refer to Figures 3A, 3B, 4A, and 4B, which are schematic diagrams of the linkage assembly of the present invention in the connected state and the separated state, schematic diagrams of the linkage assembly in the connected state causing the power storage transmission component to store power, and schematic diagrams of the linkage assembly in the separated state causing the power storage transmission component to output power, and please refer to Figures 1A to 2E in order to understand the operating principle of the present invention. The following is a description of the operation of the bicycle 10 of the present invention: When the bicycle 10 is to be moved forward normally, the linkage control mechanism 6 is in a normal state, with the pull handle 721 in a locked state and the push member 74 pulled tight by the pull rope 73, so that the push member 74 is retracted near the side of the frame 13 and separated from the holding member 71. At this time, the lower side of the holding member 71 holds the upper end 631 of the clamping rod 63, causing the clamping rod 63 to rise and its lower end 632 to separate from the recess 621 of the receiving member 62 (as shown in Figure 5A), so that the first drive gear plate 31 and the crank axle 22 are in a linkage state with each other. The rider steps on the left foot pedal 141 and the right foot pedal 151 respectively, and the right foot pedal 151 drives the right crank 15 to rotate forward, so that the hollow outer tube 21 and the crank spindle 22 rotate toward the front wheel 11. At this time, the first drive gear 31, the second drive gear 41, the third drive gear 551 connected to the hollow outer tube 21 and the second housing 52 connected to the crank spindle 22 all rotate forward. On the other hand, continuing the above-mentioned state, at the same time, the first driving sprocket 31 causes the first rear wheel sprocket 32 to continuously rotate forward through the first coil transmission bar 33, and drives the rear wheel 12 to rotate forward through the rear wheel axle 23 to make the bicycle 10 move forward. On the other hand, the second and third rear wheel sprockets 42 and 552 also disposed on the rear wheel axle 23 rotate forward synchronously. 2, 552 respectively rotate the second and third drive gears 41, 551 forward through the second and third coil transmission bars 43, 553, and the first housing 51 rotates forward along with the third drive gear 551, and the second housing 52 rotates forward along with the crank shaft 22. At this time, the energy storage element 53 rotates along with the simultaneous rotation of the first and second housings 51, 52 and operates without storing power. The following is a description of the operation of the energy storage assist system of the present invention for storing power: When the bicycle 10 is in a forward state, the rear wheel axle 23 keeps rotating forward, the rider stops the right foot pedal 151 at an upper starting point and stops stepping on the right foot pedal 151. At this time, the right crank 15 faces upward, so that the upper end 631 of the clamping rod 63 remains extended above the rod seat 61 (rod hole 611). When the rider operates the handle 721 of the operating member 72 to release the tension, the pull rope 73 is pulled upward. The pushing member 74 is driven to move out of the frame 13 and contact the pushing member 71 to move toward the right crank 15, so that the lower side of the holding member 71 and the upper end 631 of the clamping rod 63 are offset from each other and are not clamped, so that the clamping rod 63 naturally descends under the influence of gravity (the lower end 632 of the clamping rod 63 extends out from the rod hole 611 of the rod seat 61). 2 is inserted into the recess 621 of the receiving member 62 to form a locking position (as shown in FIGS. 3A and 5B). At this time, since the locking rod 63 and the receiving member 62 are connected, the crank spindle 22 is locked by the right crank 15 and does not rotate, so that the first driving gear 31 and the crank spindle 22 are not linked, and the second housing 52 also stops rotating together with the crank spindle 22. On the other hand, continuing the above state, since the rear wheel axle 23 continues to rotate forward through the above first coil transmission strip 33, the third rear wheel sprocket 552 (due to the rotation direction of the third rear unidirectional rotating element 5521), the third coil transmission strip 553 and the third drive sprocket 551 continue to rotate forward. At this time, the three drive sprockets 551 are maintained by the rotation direction of the third front unidirectional rotating element 5511. The first housing 51 connected to the three-drive gear plate 551 rotates forward, and the first fixing portion 531 of the energy storage element 53 (due to the first protruding rod 511 connected to the first housing 51) keeps rotating, and the second fixing portion 532 (due to the second protruding rod 521 connected to the second housing 52) remains stationary. At this time, the energy storage element 53 is gradually tightened and is in an energy storage (power storage) state (as shown in Figure 4A). The following is a description of the operation of the energy storage assist system of the present invention to output power: When the power is fully stored, the power storage transmission component 50 is in a coiled (stretched) state due to the structural relationship between the energy storage element (such as a coil spring) 53 and the first and second cams 511 and 521, and cannot be wound. The first fixing portion 531 of the energy storage element (such as a coil spring) 53 restricts the first housing 51 from rotating. At this time, the energy storage element (such as a coil spring) 53 forces the second fixing portion 531 to rotate due to its own restoring stretching force. 1 exerts a linkage force relative to the second cam 521, so that the second cam 521 links the second housing 52 to rotate, thereby changing the second housing 52 from the original stop rotation state to the single rotation state, and at the same time drives the one-way brake 54 to move in only one direction, thereby linking the crank spindle 22 to rotate forward, and outputting the power energy stored in the energy storage element (such as a coil spring) 53 to the right crank 15 through the crank spindle 22 to rotate the right crank 15. On the other hand, continuing the above state, when the crank spindle 22 rotates forward, it drives the receiving member 62 to rotate so that the recess 621 faces downward. At this time, when the right crank 15 rotates forward, the right foot pedal 151 moves from the original upper starting point to the lower starting point and stops (as shown in Figures 3B and 4B). When the right crank 15 rotates forward, the rod seat 61 is driven to rotate forward, so that the upper and lower sides of the rod seat 61 become opposite positions (that is, the lower side is on the upper side). In this way, the locking rod 63 is naturally dropped by gravity, and the upper end 631 of the locking rod 63 faces downward and protrudes out of the rod hole 611 of the rod seat 61, and is held and connected with the free end of the holding member 71, and the lower end 632 of the locking rod 63 is located at the top and is separated from the recess 621 (as shown in FIG. 3B ). At this time, the crank shaft 22 is no longer restricted by the right crank 15 and can rotate freely. In addition, the energy storage element 53 gradually returns to its original unfolded state (as shown in FIG. 4B ) from being rolled up to being loosened due to the restoring force, and the first driving gear disc 31 is also connected to the rod seat 61 and is also driven by the rod seat 61 to rotate forward. Furthermore, during the recovery and extension process of the aforementioned energy storage element 53, because the rear wheel axle 23 still maintains a forward rotating state, at this time, the power for the forward rotation of the hollow outer tube 21 includes two forces. One is the spring restoring force of the crank axle 22 during the recovery and extension process of the energy storage element 53, which acts on the rod seat 61 through the rotation of the right crank 15 to link the first drive gear plate 31 to link the hollow outer tube 21. The other is the pedaling force of the rider by stepping on the left and right foot pedals 141 and 151 to rotate the hollow outer tube 21 through the left and right cranks 14 and 15. Furthermore, the diameter of the second driving gear 41 is larger than the diameter of the first driving gear 31, and the second rear two-way rotating element 421 in the second rear wheel gear 42 can be sleeved on the rear wheel axle 23 and can be driven by the rear wheel axle 23 to be bidirectionally rotatable. When the rear wheel axle 23 links the second rear wheel gear 42 and the first rear wheel gear 32 to rotate, the second rear wheel gear 42 is rotated through the first rear wheel gear 31. The second rear wheel sprocket 42 and the first rear wheel sprocket 32 respectively chain the second drive sprocket 41 and the first drive sprocket 31 to synchronously rotate and drive the wheel set (i.e., the front and rear wheels 11, 12), providing additional power to drive the wheel set forward, thereby greatly enhancing the additional power assistance for riding, making the rider feel easier when stepping on the left and right side pedals 141, 151. Therefore, when the bicycle 10 of the present invention is used for riding, when the rider continuously steps on the left and right side pedals 141 and 151 to make the bicycle 10 move, just like a general bicycle, the rider only needs to control the brake handle and the gear shift handle. The rider can choose whether to store energy at any time, and by operating the pull handle 721 of the operating assembly 70 of the linkage control mechanism 6 to control the clutch of the linkage assembly 60, the energy storage element 53 can be controlled to store kinetic energy, and after the kinetic energy is fully stored, the power storage transmission component 50 is automatically controlled to output power, thereby providing riding assistance, effectively reducing the burden of hand control on the rider, avoiding distraction, and greatly improving safety and practicality in use. Although the energy storage element 53 in the power storage transmission component 50 is illustrated as only one coil spring in the above embodiment, it is not limited to this. A plurality of energy storage elements 53 can be used according to usage requirements to increase the stored energy, thereby extending the time and strength of the auxiliary power output. In summary, the present invention has the following advantages: 1. The rider does not need to re-adapt to the operation and use method; 2. The hand operation burden is not increased, and the operation safety is high; 3. The power storage system is controlled by the operating assembly 70 to store power or output the stored power, which is highly intuitive in use; 4. The power storage transmission component is arranged on the spindle assembly, and the spindle assembly is arranged at the original five-way axle hole of the frame, and the frame does not need to be redesigned; 5. The linkage assembly has a simple structure and high reliability. The present invention has been described in detail above, but the above is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of the application of the present invention should still fall within the scope of the patent of the present invention.

10: Bicycle 11: Front wheel 12: Rear wheel 13: Frame 131: Bottom bracket 14: Left crank 141: Left pedal 15: Right crank 151: Right pedal 2: First rotary transmission member 20: Spindle assembly 21: Hollow outer tube 211: First joint 212: Second joint 22: Crank spindle 221: Left end 222: Right end 23: Rear wheel spindle 25: Annular gap 30: First transmission group 31: First drive sprocket 32: First rear wheel sprocket 33: First coil transmission bar 40: second rotary transmission member 41: second drive gear plate 42: second rear wheel gear plate 411: second front unidirectional rotating element 421: second rear bidirectional rotating element 43: second coil transmission strip 50: power storage transmission member 51: first housing 511: first cam 52: second housing 521: second cam 53: energy storage element 531: first fixing part 532: second fixing part 54: one-way brake 55: third transmission group 551: third drive gear plate 5511: third front unidirectional rotating element 552: third rear wheel gear plate 5521: third rear unidirectional rotating element 553: third coil transmission strip 6: linkage control mechanism 60: linkage assembly 61: rod seat 611: rod hole 62: receiving member 621: recess 63: clamping rod 631: upper end 632: lower end 64: bidirectional rotating member 70: operating assembly 721: handle 71: suction member 72: operating member 73: pull rope 74: push member

Figure 1A is a three-dimensional schematic diagram of the bicycle of the present invention (I); Figure 1B is a three-dimensional schematic diagram of the bicycle of the present invention (II); Figure 1C is a disassembled schematic diagram of the bicycle of the present invention (I); Figure 1D is a disassembled schematic diagram of the bicycle of the present invention (II); Figure 2A is a disassembled schematic diagram of the energy storage and power-assisting system of the present invention; Figure 2B is a three-dimensional schematic diagram of the energy storage and power-assisting system of the present invention; Figure 2C is a cross-sectional schematic diagram of the energy storage and power-assisting system of the present invention; Figure 2D is a disassembled schematic diagram of the power storage transmission component of the present invention; Figure 2E is a system schematic diagram of the bicycle of the present invention; Figure 3A is a plan schematic diagram of the connection state of the linkage assembly and the suction member; Figure 3B is a plan schematic diagram of the separation state of the linkage assembly and the suction member; Figure 4A is a schematic diagram of the action of the power storage transmission member storing power when the linkage assembly is connected to the suction member; Figure 4B is a schematic diagram of the action of the power storage transmission member outputting power when the linkage assembly is separated from the suction member; Figure 5A is a schematic diagram of the linkage assembly and the suction member in Figure 2E being separated; Figure 5B is a schematic diagram of the linkage assembly and the suction member in Figure 2E being connected.

14: Left crank

15: Right crank

21: Hollow outer tube

22: Crank spindle

25: Annular gap

31: First drive gear plate

41: Second drive gear plate

51: First shell

52: Second shell

53: Energy storage element

54: One-way brake

551: Third drive gear plate

5511: Third front one-way rotating element

60: Linkage assembly

61:Pole seat

611: Rod hole

62: Accepted parts

621: Concave part

63:Card rod

631: Top

64: Bidirectional rotating member

71: Suction and holding parts

Claims (15)

A bicycle energy storage and power-assisting system is installed on a frame, and the energy storage and power-assisting system comprises: A first rotary transmission component, having a spindle assembly, a first transmission group and a rear wheel spindle arranged on the frame, the spindle assembly having a hollow outer tube, and a crank spindle located in the hollow outer tube and arranged on the frame coaxially with the hollow outer tube, the first transmission group having a first drive gear connected to the hollow outer tube, and a first rear wheel gear connected to the rear wheel spindle, and the crank spindle is rotated by being assembled with two crank drives to link the rear wheel spindle to rotate; A second rotation transmission component, comprising a second driving gear plate disposed on the hollow outer tube and driven by the hollow outer tube to rotate, and a second rear wheel gear plate connected to the rear wheel axle to rotate; A power storage transmission component, having a first housing, a second housing, an energy storage element, a one-way brake and a third transmission group, the second housing is connected to the crank axle and corresponds to the first housing, the energy storage element has two ends respectively connected to the first housing and the second housing, the third transmission group has a third drive gear connected to the first housing and disposed on the hollow outer tube, and a third rear wheel gear connected to the rear wheel axle for transmission and rotation, the one-way brake is connected to the crank axle and the second housing, so that the one-way brake is driven by the second housing to move in a single direction and link the crank axle to actuate; A linkage control mechanism includes a linkage assembly having a rod seat and a receiving member connected to the crank spindle, the rod seat is respectively connected to the first drive gear disc and the crank, and a locking rod is passed through the rod seat, and a control assembly can operate the locking rod to move relative to the receiving member in a connected or separated manner, so that the first and second housings rotate simultaneously or the first housing rotates alone, so as to control the power storage transmission component to output power or store power. A bicycle energy storage and assisting system as described in claim 1, wherein the hollow outer tube has a first coupling portion and a second coupling portion respectively protruding from two sides of the frame, and the first driving gear plate, the second driving gear plate and the third driving gear plate are respectively coupled between the first coupling portion and the second coupling portion. A bicycle energy storage and assisting system as described in claim 2, wherein the crank axle is longer than the hollow outer tube, and has a first coupling portion protruding from the hollow outer tube at the left end and a second coupling portion protruding from the hollow outer tube at the right end, and the right end and the left end of the crank axle are respectively connected to a right crank and a left crank. A bicycle energy storage and assisting system as described in claim 1, wherein the first housing has a first protruding rod, the second housing has a second protruding rod, and the energy storage element has a first fixing portion and a second fixing portion respectively disposed on the first protruding rod and the second protruding rod. A bicycle energy storage and assist system as described in claim 1, wherein the energy storage element is a coil spring, and the coiling direction of the coil spring is the same as the traveling direction of the bicycle. The bicycle energy storage and assisting system as described in claim 1, wherein the rod seat has a rod hole for the clamping rod to be inserted, and the receiving member has a recess for the clamping rod to be engaged. A bicycle energy storage and power-assisting system as described in claim 1, wherein the linkage assembly has a two-way rotating member, which is sleeved on the hollow outer tube and has an inner ring connected to the first drive gear disc for synchronous rotation. A bicycle energy storage and assisting system as described in claim 1, wherein the operating assembly has a suction member and an operating member, and the operating member operates the suction member to move so that the suction member is connected or disengaged with the corresponding clamping rod, thereby enabling the clamping rod and the receiving member to engage or disengage relative to each other, so that the first drive gear is connected or not connected with the crank axle. A bicycle energy storage and assisting system as described in claim 8, wherein the operating assembly further includes a pull rope and a push member, the pull rope has two ends respectively connected between the operating member and the push member, and the push member is reciprocatingly arranged on the side of the frame to maintain a state of not interfering with the lifting and lowering of the pull rope. A bicycle energy storage and assisting system as described in claim 3, wherein an annular gap is provided between the hollow outer tube and the crank axle, and at least one bearing is disposed in the annular gap. A bicycle energy storage and power-assisting system as described in claim 1, wherein the third drive gear has a third front one-way rotating element that can be sleeved on the hollow outer tube, and the third rear wheel gear has a third rear one-way rotating element that can be sleeved on the rear wheel axle. A bicycle energy storage and assisting system as described in claim 11, wherein the third front one-way rotating element and the third rear one-way rotating element have opposite rotation directions. A bicycle energy storage and power-assisting system as described in claim 1, wherein the second rotation transmission component includes a second coil transmission bar, and the second coil transmission bar connects the second drive gear and the second rear wheel gear. A bicycle energy storage and power-assisting system as described in claim 13, wherein the second drive gear has a second front unidirectional rotating element sleeved on the hollow outer tube, and the second rear wheel gear has a second rear double rotating element sleeved on the rear wheel axle. A bicycle energy storage and assisting system as described in claim 1, wherein the wheel diameter of the second driving gear disc is larger than the wheel diameter of the first driving gear disc.

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