CN111452900A - Bicycle energy storage helping hand system - Google Patents

Abstract

A bicycle energy storage assist system comprising: a hollow mandrel, which is pivoted on a frame, a driving fluted disc and a first fluted disc are connected with the hollow mandrel and are respectively positioned at two sides of the frame; a crank spindle located within the hollow spindle and disposed coaxially with the hollow spindle; a first shell connected with the first fluted disc; the second shell is connected with the crank mandrel and corresponds to the first shell; the two ends of the energy storage element are respectively connected with the first shell and the second shell; a receiving member connected to the crank spindle and adjacent to the driving fluted disc; and the shaft seat is connected with the driving fluted disc and is provided with a connecting shaft which moves relative to the connected piece in a connecting or separating way, so that the first shell and the second shell rotate simultaneously or the first shell rotates independently to control the power storage component to output power or store power.

Description

Bicycle energy storage assist system

technical field

The present invention relates to a bicycle, in particular to a bicycle energy storage power assist system.

Background technique

Generally, bicycles are pedaled by human power. When the riding time is long or the terrain changes greatly or the load is heavy, or for older users, it will be very laborious to deepen the heavy feeling of the feet, making it difficult to ride. Of course, in order to reduce the feeling of stepping on the weight, you can use the speed change system of the variable speed bicycle to reduce the feeling of stepping on the foot. The principle of the speed change system is to use both feet to step on the pedal, connect the crank of the pedal, drive the front chainring to rotate, and transmit the force through the chain. To the freewheel (that is, the gear on the rear wheel), the freewheel connects to the rear wheel hub to drive the rear wheel to move the bike forward. The transmission system includes flywheel, large plate, front and rear derailleurs, chain, and left and right integrated brake levers. The emergence of the derailleur drives the chain to reach different chainrings, and changes the gear ratio of the pedaling. Facing different terrains, the most suitable gear ratio can be selected to save physical strength.

By changing the gear ratio, the speed change system also steps on a circle. The larger the gear ratio, the more forward distance, but it is relatively laborious; the smaller the gear ratio, the less forward distance, but it is relatively labor-saving. Therefore, the switching of the gear ratio depends on the situation of the knight at the time. If you want to be fast but laborious, or slow but labor-saving.

However, there is no way for the shifting system to add extra power to assist riding, and in order to save effort, the forward distance is shortened. For this reason, bicycles equipped with non-electrically driven power assist systems have also been widely developed, such as Taiwan Patent No. M447358 and I378881, both disclose a bicycle with a non-electrically driven power assist system.

The bicycle of Taiwan Patent No. M447358 discloses a grip with different functions controlled by both hands, respectively to store and release auxiliary power. When the vehicle is traveling, press the control grip to store the auxiliary power. When the control handle is opened, there is no energy storage; the release device is pressed to release the auxiliary power, and the release device is not released when the release device is released. However, the two operating handles (control handle and release device) are set at the faucet near the brake. At the handle, the operation weight of the hand is greatly increased, which in turn affects the safety of vehicle control.

Because riding a bicycle is an activity that requires full use of the limbs, but for safety reasons, the hand determines the direction and braking, so the bicycle of Taiwan Patent No. M447358, which excessively increases the burden of hand operation The design method will greatly affect the rider's operation in safety.

The bicycle of Taiwan Patent No. I378881 discloses a transmission device applied to the bicycle. The pressure of the pressure plate is adjusted by adjusting the crank, and the energy storage method of the spring is determined by the pressure. When the pressure is small, the reverse rotation is not stored. On the contrary, when the pressure is high, the forward rotation will not be stored, so that the energy storage effect can be achieved in both forward and reverse directions of the pedal.

Further, Taiwan Patent No. I378881 also mentions that an auxiliary power such as Taiwan Patent No. I357389 is applied to the bicycle, and the energy storage is released by pulling the control member through the wire rope, thereby achieving the energy storage of the auxiliary power. The transmission structure of No. I378881 is applied to the auxiliary power unit of Patent No. I357389 to achieve a new type of bicycle.

No matter which of the above bicycles, there are the following problems:

1. The operation of controlling auxiliary power is very unreasonable, ignoring the considerations of controllability and safety;

2. The power assist system is all set on the frame, which leads to the need for special design of the whole bicycle, and the structure is very complicated, which in turn makes the whole vehicle heavier;

3. Because the power assist system is set on the frame and is not directly connected to the spindle, it needs to store power through other structures (such as chains or racks, etc.), which increases the power loss when the bicycle is traveling.

How to solve the above problems and shortcomings is the direction that the inventors of the present invention and related manufacturers in the industry are eager to research and improve.

SUMMARY OF THE INVENTION

In order to improve the above-mentioned problems, the main purpose of the present invention is to provide a bicycle energy storage assist system in which the power storage assembly is directly arranged on the spindle assembly.

Another main object of the present invention is to provide a foot-operated link assembly to control the power storage assembly to store or output power.

Another main objective of the present invention is to provide a control mechanism that controls whether the power storage component stores power through the foot, so as to reduce the burden of hand control.

Another main object of the present invention is to provide a simple and reliable control mechanism.

In order to achieve the above-mentioned purpose, the present invention provides a bicycle energy storage power assist system, which is installed on a frame of a bicycle. The energy storage power assist system includes: a mandrel assembly, including: a hollow hollow shaft pivoted on the bicycle On the frame, a drive sprocket and a first sprocket are connected to the hollow shaft and are located on both sides of the frame respectively; a crank shaft is located in the hollow shaft and is coaxially arranged with the hollow shaft ; A power storage assembly, comprising: a first shell, connected with the first chainring; a second shell, connected with the crank spindle and corresponding to the first shell; an energy storage element, located in the first A casing and the second casing have two ends respectively connected to the first casing and the second casing; a linkage assembly includes: a receiving member connected to the crank spindle and adjacent to the drive gear plate; a shaft seat is connected with the drive gear plate, and the shaft seat is provided with a linkage shaft that is connected or separated relative to the receiving member, so that the first shell member, the second The casings rotate simultaneously or the first casing rotates independently, controlling the power storage assembly to output power or store power.

Further, the hollow shaft has a first engaging portion and a second engaging portion respectively protruding from both sides of the frame, and the first engaging portion and the second engaging portion are the drive sprocket and the first gear, respectively. Disc engagement.

Further, the crank shaft is longer than the hollow shaft, and has a first joint part whose left end protrudes from the hollow shaft and a second joint part whose right end protrudes from the hollow shaft.

Further, the right end and the left end of the crank spindle are respectively connected with a right crank and a left crank.

Further, there is an annular gap between the hollow spindle and the crank spindle, a first rotating element and a second rotating element are arranged in the annular gap, the first rotating element is adjacent to the left crank, and the first rotating element is adjacent to the left crank. Two rotating elements are adjacent to the right crank.

Further, the first rotating element and the second rotating element are a bearing.

Further, the bicycle includes a rear wheel spindle pivoted on the frame.

Further, the bicycle includes a first transmission group, the first transmission group includes the drive chainring, a rear wheel chainring and a first flexible transmission bar, the rear wheel chainring is connected with the rear wheel spindle , the first flexible transmission bar is connected to the drive gear plate and the rear gear plate.

Further, the bicycle includes a second transmission group, the second transmission group includes the first chainring, a second chainring and a second flexible transmission bar, the second chainring and the rear wheel spindle connected, the second flexible transmission bar is connected with the first chainring and the second chainring.

Further, the first chainring has a first one-way rotating element sleeved on the rear wheel spindle, and the second chainring has a second one-way rotating element sleeved with the hollow shaft.

Further, the rotation directions of the first one-way rotating element and the second one-way rotating element are opposite.

Further, the rear wheel chainring is a single-speed chainring or a flywheel chainring, and the flywheel chainring includes a plurality of chainrings with different numbers of teeth stacked at a coaxial interval.

Further, the shaft seat has a shaft hole for the interlocking shaft to be inserted, and the receiving member has a concave part for the interlocking shaft to be inserted.

Further, the axle seat is connected with a one-way rotating element, and the one-way rotating element has an inner ring connected with the driving gear plate and an outer ring, and the outer ring is connected with the axle seat.

Further, the first shell has a first protruding rod, the second shell has a second protruding rod, and the energy storage element has a first fixing portion and a second fixing portion respectively sleeved on the first a protruding rod and the second protruding rod.

Further, the energy storage element is a scroll spring.

Further, the rolling direction of the scroll spring is the same as the traveling direction of the bicycle.

Further, the first shell member and the second shell member define an accommodation space for accommodating the energy storage element.

With the above-mentioned structure, the inventors believe that when a rider rides a bicycle, the rider presses the foot pedal to turn the bicycle to move the bicycle. Therefore, the relative position of the receiving member and the axle base is controlled by operating the foot pedal, so that the connection The movement of the moving shaft makes the receiving part and the shaft seat connect or separate, and then control whether the power storage system stores the power or outputs the power after the storage. The consistent and intuitive operation can be generated by stepping on the foot to effectively reduce the rider's hand. Department burden control to greatly improve security.

In addition, the power storage component is directly arranged on the spindle component, so that the frame of the bicycle does not need to be provided with other structures, the overall structure is simplified, the weight is reduced, and the power loss on the transmission is effectively reduced, making the overall use smoother and more convenient. , which greatly provides usability.

Description of drawings

Fig. 1A is the three-dimensional schematic diagram (1) of the bicycle of the present invention;

Fig. 1B is the three-dimensional schematic diagram (2) of the bicycle of the present invention;

Fig. 1C is the exploded schematic diagram (1) of the bicycle of the present invention;

Fig. 1D is the exploded schematic diagram (two) of the bicycle of the present invention;

2A is a schematic perspective view of a bicycle energy storage power assist system of the present invention;

2B is an exploded schematic view of the bicycle energy storage power assist system of the present invention;

2C is a schematic cross-sectional view of the bicycle energy storage power assist system of the present invention;

2D is an exploded schematic view of the power storage assembly of the present invention;

2E is a schematic diagram of the bicycle energy storage power assist system of the present invention;

3A is a schematic plan view of the connector assembly in a connected state;

3B is a schematic plan view of the coupling assembly in a separated state;

4A is a schematic diagram of the action of the power storage assembly storing power in the connected state of the link assembly;

4B is a schematic diagram of the action of the power storage assembly outputting power in a disconnected state of the linkage assembly;

5A is a schematic plan view (1) of the different angles of the receiving member and the right crank;

5B is a schematic plan view (2) of the different angles of the receiving member and the right crank;

Fig. 5C is a schematic plan view (3) of the different angles of the receiving member and the right crank.

Description of reference numerals

10 bikes

11 front wheels

12 rear wheels

13 frame

131 five-way shaft hole

132 frame bearing

14 Left crank

141 Left foot pedal

15 Right crank

151 Right foot pedal

16 rear wheel spindle

20 Spindle Assembly

21 hollow shaft

211 first joint

212 second joint

22 crank spindle

221 Left end

222 right end

23 The first rotating element

24 second rotating element

25 annular gap

30 The first transmission group

31 drive chainring

32 rear chainrings

33 The first flexible transmission bar

40 Second transmission group

41 The first chainring

411 first one-way rotating element

42 second chainring

421 second one-way rotating element

43 Second flexible transmission bar

50 power reserve components

51 first shell

511 first convex rod

52 second shell

521 second convex rod

53 energy storage elements

531 first fixed part

532 second fixed part

60 link assembly

61 axle seat

611 shaft hole

612 Fixtures

62 accepted

621 Recess

63 linkage shaft

64 one-way rotating elements.

Detailed ways

The above object of the present invention and its structural and functional characteristics will be described with reference to the preferred embodiments of the accompanying drawings.

Please refer to FIGS. 1A, 1B, 1C, 1D, 2A, 2B, 2C, 2D, and 2E, which are the three-dimensional schematic diagrams (1) and (2) of the bicycle of the present invention, and the exploded schematic diagram of the bicycle ( 1) and (2), the three-dimensional schematic diagram, the exploded schematic diagram and the cross-sectional schematic diagram of the bicycle energy storage assist system of the present invention, the exploded schematic diagram of the power storage assembly of the present invention, and the schematic diagram of the bicycle energy storage assist system of the present invention, the present invention discloses an energy storage assist system The system is set on a bicycle 10, the energy storage power system mainly includes a spindle assembly 20, a power storage assembly 50 and a linkage assembly 60, the bicycle 10 includes a first transmission group 30 and a second transmission group 40 .

The bicycle 10 includes a frame 13, a front wheel 11 and a rear wheel 12 are 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, the five-way axle The hole 131 is used for pivoting the spindle assembly 20 , the rear wheel shaft hole is used for pivoting a rear wheel spindle 16 , and a plurality of frame bearings 132 are arranged in the five-way shaft hole 131 to connect the spindle assembly 20 .

The spindle assembly 20 includes a hollow spindle 21 and a crank spindle 22 . The hollow spindle 21 is pivoted in the five-way shaft hole 131 , and the frame bearing 132 is sleeved on the outer surface of the hollow spindle 21 . The crank spindle 22 is located in the hollow spindle 21, an annular gap 25 is formed between the hollow spindle 21 and the crank spindle 22, and a first rotating element 23 and a second rotating element 24 are arranged in the annular gap 25, the hollow shaft 21 and the crank spindle 22 are arranged coaxially.

The hollow shaft 21 has a first engaging portion 211 and a second engaging portion 212, which are located on the left and right sides of the hollow shaft 21, respectively. The crank shaft 22 has a left end 221 and a right end 222. The crank shaft 22 It has a length longer than the hollow shaft 21 , the left end 221 protrudes from the first engaging portion 211 , the right end 222 protrudes from the second engaging portion 212 , and the first rotating element 23 is close to the hollow shaft 21 . The opening on the left side, the second rotating element 24 is close to the opening on the right side of the hollow shaft 21 , and the first rotating element 23 and the second rotating element 24 are bearings.

The left end 221 of the crank spindle 22 is connected to a left crank 14 , the right end 222 of the crank spindle 22 is connected to a right crank 15 , and a left foot pedal 141 is provided at the end of the left crank 14 away from the left end 221 . , a right foot pedal 151 is disposed at one end of the right crank 15 away from the right end 222 .

The first transmission group 30 includes a drive chainring 31 , a rear wheel chainring 32 and a first flexible transmission bar 33 . The driving chainring 31 is connected to the second joint portion 212 of the hollow shaft 21 . The rear wheel The chainring 32 is connected to the right outer surface portion of the rear wheel spindle 16 , and the first flexible transmission bar 33 is connected to the driving chainring 31 and the rear wheel chainring 32 .

In this embodiment, the rear wheel chainring 32 is a flywheel chainring, and the flywheel chainring includes a plurality of chainrings with different numbers of teeth stacked and arranged at coaxial intervals, but not limited to this. The disc 14 can also be a single speed chainring.

The second transmission group 40 includes a first chainring 41 , a second chainring 42 and a second flexible transmission bar 43 . The first chainring 41 is connected to the first engaging portion 211 of the hollow shaft 21 , the The second chainring 42 is connected to the left outer surface portion of the rear wheel spindle 16 , and the second flexible transmission bar 43 is connected to the first chainring 41 and the second chainring 42 .

The first toothed plate 41 has a first one-way rotating element 411 , the first one-way rotating element 411 is sleeved with the first engaging portion 211 of the hollow shaft 21 , and the first one-way rotating element 411 is a single one-way rotating element 411 . The first one-way rotating element 411 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 second gear plate 42 has a second one-way rotating element 421, the second one-way rotating element 421 is sleeved with the first joint portion of the rear wheel spindle 16, and the second one-way rotating element 421 is a single one-way rotating element 421. The first one-way rotating element 411 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 .

The power storage assembly 50 includes a first shell 51 , a second shell 52 and an energy storage element 53 , the first shell 51 is connected to the first chainring 41 (eg, by screwing or welding), the The second shell 52 is connected to the crank spindle 22 adjacent to the outer surface of the left end 221 , and two ends of the energy storage element 53 are respectively connected to the first shell 51 and the second shell 52 .

In this embodiment, the first shell 51 and the second shell 52 define a receiving space for accommodating the energy storage element 53 , the first shell 51 has a first protruding rod 511 , and the second shell 52 has a second protruding rod 521, two ends of the energy storage element 53 are a first fixing part 531 and a second fixing part 532 respectively, the first fixing part 531 is sleeved on the first protruding rod 511, the first The two fixing portions 532 are sleeved on the second protruding rod 521 , but not limited thereto, the energy storage element 53 can also be connected to the first shell 51 by other means such as locking or fitting or clamping or welding. And the second shell 52 is fixed, and the energy storage element 53 is a spiral spring.

The link assembly 60 includes a shaft seat 61 , a receiving member 62 , a linkage shaft 63 and a one-way rotating element 64 . The one-way rotating element 64 is a one-way flywheel and has a stop direction and In a rotation direction, the stop direction is toward the front wheel 11, and the rotation direction is toward the rear wheel 12. The one-way rotation element 64 has an inner ring and an outer ring, and the inner ring is connected to the drive sprocket 31 (eg, The outer ring is connected to the axle seat 61 by means of screw locking, welding or socket connection. The receiving member 62 is connected to the crank spindle 22 and is adjacent to the driving gear plate 31. The axle seat 61 has an axle hole 611 and A fixing member 612, the interlocking shaft 63 is inserted into the shaft hole 611 to move in a linear direction, the fixing member 612 is connected to the right crank 15, the receiving member 62 has a recess 621 and a one-way rotating element 64, so The concave portion 621 is inserted into the interlocking shaft 63 .

In addition, in this embodiment, the direction of the axle seat 61 is the same as the setting direction of the right crank 15, but it is not limited to this, and the relationship between the axle seat 61 and the right crank 15 can also be adjusted according to riding habits Angle relationship, which will be described later.

Please refer to FIG. 3A, FIG. 3B, FIG. 4A and FIG. 4B, which are respectively a schematic plan view of the connector assembly in the connected state and the disconnected state of the present invention, the action schematic diagram of the power storage component storing power in the connected state of the connector assembly, and the linkage 1A to 2E to understand the operation principle of the present invention.

The action description of the bicycle 10 of the present invention will be described below first:

When the bicycle 10 is to be moved forward, the rider steps on the left pedal 141 and the right pedal 151, and the right pedal 151 drives the right crank 15 to rotate forward, so that the hollow shaft 21 and the The crank spindle 22 rotates in the direction of the front wheel 11 . At this time, the drive chain 31 , the first chain 41 and the second shell 52 connected to the crank spindle 22 all rotate forward.

On the other hand, at the same time, the drive chainring 31 makes the rear wheel chainring 32 rotate forward through the first flexible transmission bar 33, and drives the rear wheel 12 to rotate forward through the rear wheel spindle 16 to make the bicycle 10 move forward. On the one hand, the second chainring 42 also arranged on the rear wheel spindle 16 rotates forward synchronously, the second chainring 42 makes the first chainring 41 rotate forward through the second flexible transmission bar 43, the A shell 51 rotates forward with the first chainring 41 , the second shell 52 rotates forward with the crank spindle 22 , and the energy storage element 53 rotates with the first shell 51 and the second shell 52 The rotation of 52 rotates together and operates without stored power.

The following describes the action description of the energy storage booster system of the present invention to store power:

When the bicycle 10 is in a forward state, the rear wheel spindle 16 keeps rotating forward, the rider stops the right pedal 151 at an upper starting point and stops pressing the pedal, the right crank 15 is facing The upper part keeps the shaft seat 61 (linking shaft 63 ) at the top, at this time, the crank spindle 22 will continue to rotate forward due to inertia and drive the receiving part 62 to make the concave part 621 face upward. When the concave part 621 is connected to the connecting When the moving shaft 63 is aligned, the interlocking shaft 63 naturally falls and is inserted into the concave portion 621 under the influence of gravity, as shown in FIG. 3A .

At this time, due to the connection between the link shaft 63 and the receiving member 62, the crank spindle 22 is locked by the right crank 15 and does not rotate, and the second shell 52 also stops rotating along with the crank spindle 22; on the other hand As the rear wheel spindle 16 rotates forward, the second chainring 42, the second flexible transmission bar 43 and the first chainring 41 rotate forward, and the rotation direction of the first one-way rotating element 411 makes the first chainring 411 rotate forward. A toothed plate 41 is kept rotating, so that the first shell 51 connected to the first toothed plate 41 is rotated forward. At this time, the first fixing portion 531 of the energy storage element 53 is not moving, and the second fixing portion 532 keeps rotating. At this time, the energy storage element 53 is gradually tightened and is in a state of energy storage (stored power), as shown in FIG. 4A .

The following describes the action description of the output power of the energy storage booster system of the present invention:

In the state where the energy storage element 53 stores energy (stores power), the rider moves the right foot pedal 151 from the upper starting point to the lower starting point through control and stops, and the interlocking shaft moves while the right foot pedal 151 moves. 63 drives the receiving member 62 to rotate the crank spindle 22, thereby causing the recess 621 of the receiving member 62 to face downward. When the right pedal 151 is at the bottom starting point, the linkage shaft 63 falls naturally and disengages due to the influence of gravity The concave portion 621, as shown in FIG. 3B, the crank spindle 22 is no longer restricted by the right crank 15 and can rotate freely, and the energy storage element 53 is gradually restored to its original state from tight to loose due to the restoring force, as shown in the figure 4B.

During the process of restoring the energy storage element 53 to extend, because the rear wheel spindle 16 still keeps rotating forward, the first shell 51 still keeps rotating forward, and is matched with the second one-way rotating element 421 The stopping action of the energy storage element 53, which forces the energy storage element 53 to resume its extension, acts on the second shell member 52, so that the crank spindle 22 rotates forward.

At this time, the power for the forward rotation of the hollow shaft 21 includes two forces. One is for the rider to pedal through the left and right pedals 141 and 151 to rotate the hollow shaft through the left crank 14 and the right crank 15 . The pedal output force of the shaft 21 and the other is the spring restoring force of the crank spindle 22 acting on the hollow spindle 21 through the rotation of the right crank 15 during the recovery process of the energy storage element 53 .

Through the above description, the energy storage element 53 of the present invention can be wound up to store power through the rotation of the rear wheel 12 (pedal rotation or inertial rotation, such as downhill), and the energy storage element 53 can be released when the restoring force is released. The crank spindle 22 generates extra power to assist, so that the rider feels lighter when stepping on the left footboard 141 and the right footboard 151 .

In addition, when the rider continuously steps on the left pedal 141 and the right pedal 151 to make the bicycle 10 travel, the interlocking shaft 63 will not be inserted into the recess 621 due to the centrifugal force when the driving chainring 31 continues to rotate , the first shell 51 and the second shell 52 are kept in a rotating state, so that the energy storage element 53 is released without storing power.

In addition, the one-way rotating element 64 allows the rider to quickly and conveniently adjust the position of the shaft seat 61 by rotating the right footboard 151 in the opposite direction, so that the interlocking shaft 63 can be inserted into the recess more efficiently 621.

Although the energy storage element 53 in the power storage assembly 50 in the above-mentioned embodiment is only represented by a spiral spring, it is not limited to this, and a plurality of energy storage elements 53 can be used to increase the stored energy according to the usage requirements. This extends the time and power of auxiliary power output.

Please refer to FIGS. 5A , 5B and 5C, which are schematic plan views (1), (2) and (3) of the receiving member and the right crank at different angles, respectively. In the above embodiment, the concave portion 621 and the right side can be seen. The crank 15 is in the same direction, so to store power, place the right foot pedal 151 at the top starting point, and other positions do not store power. The rider only needs to put the right foot when the bicycle 10 is sliding. The pedal 151 starts to store power when the pedal 151 is placed at the highest position, but not all riders are accustomed to placing the right pedal 151 at the highest position when the bicycle 10 is sliding, so adjust the recess 621 and the right side according to their riding habits. The angular relationship of the crank 15 can change the starting position of the energy storage action. For example, Fig. 5A shows that the right foot pedal 151 is placed at the front and starts to store power, and Fig. 5B shows that the right foot pedal 151 is placed at the bottom and starts to store power. For power, FIG. 5C shows that the right foot pedal 151 is placed in a self-determined position and starts to store power.

Therefore, when the bicycle 10 of the present invention is used for riding, the operation burden of the hand does not increase, and just like a general bicycle, it is only necessary to control the brake handle and the gear handle, and then slide on the bicycle 10 according to the rider himself. Or, the right foot is used to the parking position to determine the angular relationship between the right crank 15 and the concave portion 621 when inertial forward, so the rider can use it easily and quickly without re-adapting to the operation.

To sum up, the present invention has the following advantages:

1. The rider does not need to re-adapt to the operation and usage;

2. The burden of hand operation is not increased, and the operation safety is high;

3. Control whether the power storage system stores power or stores power output through the feet, which is highly intuitive to use;

4. The power storage assembly is set on the spindle assembly, and the spindle assembly is set at the original five-way shaft hole of the frame, so there is no need to redesign the frame;

5. The structure of the linkage assembly is simple and the reliability is high.

The present invention has been described in detail above, but the above description 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 according to the scope of the right of the present invention should still fall within the scope of the patent of the present invention.

Claims (18)

1. a bicycle energy storage power assist system, is installed on a frame of a bicycle, it is characterized in that, this energy storage power assist system comprises: A mandrel assembly, including: a hollow shaft pivoted on the frame, a drive sprocket and a first sprocket are connected to the hollow shaft and are located on two sides of the frame respectively; a crank spindle, located in the hollow spindle and coaxially arranged with the hollow spindle; A power reserve assembly comprising: a first shell, connected with the first chainring; a second shell, connected with the crank spindle and corresponding to the first shell; an energy storage element located between the first shell and the second shell, and the two ends of the energy storage element are respectively connected with the first shell and the second shell; A linkage assembly, including: a receiving piece connected with the crank spindle and adjacent to the drive chainring; A shaft seat is connected with the drive gear plate, and the shaft seat is provided with a linkage shaft that is connected or separated relative to the receiving member, so that the first shell member and the second shell member can rotate simultaneously or the first shell member A single shell rotates to control the power storage assembly to output or store power. 2 . The bicycle energy storage power assist system as claimed in claim 1 , wherein the hollow shaft has a first joint portion and a second joint portion respectively protruding from both sides of the frame, and the first joint portion is 2. 3 . and the second engaging portion is respectively engaged with the driving sprocket and the first sprocket. 3 . The energy storage power assist system of claim 2 , wherein the crank spindle is longer than the hollow shaft, and has a left end protruding from the first joint portion of the hollow shaft and a right end protruding. 4 . The second engagement portion of the hollow shaft. 4 . The energy storage power assist system of claim 3 , wherein the right end and the left end of the crank spindle are respectively connected with a right crank and a left crank. 5 . 5 . The bicycle energy storage power assist system as claimed in claim 4 , wherein an annular gap is formed between the hollow shaft and the crank shaft, and a first rotating element and a second rotating element are arranged in the annular gap. 6 . In the gap, the first rotating element is adjacent to the left crank, and the second rotating element is adjacent to the right crank. 6 . The energy storage power assist system of claim 5 , wherein the first rotating element and the second rotating element are a bearing. 7 . 7 . The energy storage power assist system of claim 1 , wherein the bicycle comprises a rear wheel spindle pivoted on the frame. 8 . 8 . The bicycle energy storage power assist system as claimed in claim 7 , wherein the bicycle comprises a first transmission group, and the first transmission group comprises a drive chainring, a rear wheel chainring and a first flexible The transmission bar is connected with the rear wheel spindle, and the first flexible transmission bar is connected with the driving tooth plate and the rear wheel tooth plate. 9 . The bicycle energy storage power assist system as claimed in claim 8 , wherein the bicycle comprises a second transmission group, and the second transmission group comprises the first chainring, a second chainring and a second chainring. 10 . A flexible transmission bar, the second toothed plate is connected with the rear wheel spindle, and the second flexible transmission bar is connected with the first toothed plate and the second toothed plate. 10 . The bicycle energy-storage power assist system as claimed in claim 9 , wherein the first chainring has a first one-way rotating element sleeved on the rear wheel spindle, and the second chainring has a second single The hollow shaft is sleeved to the rotating element. 11 . The energy storage power assist system of claim 10 , wherein the rotation directions of the first unidirectional rotating element and the second unidirectional rotating element are opposite to each other. 12 . 12 . The bicycle energy storage power assist system according to claim 8 , wherein the rear wheel chainring is a single-speed chainring or a flywheel chainring, and the flywheel chainring comprises a plurality of chainrings with different numbers of teeth coaxially arranged. 13 . Hearts spaced stacked set. 13 . The energy storage power assist system of claim 1 , wherein the shaft seat has a shaft hole for inserting the linkage shaft, and the receiving member has a recess for the linkage shaft to be inserted. 14 . 14. The bicycle energy storage power assist system as claimed in claim 1, wherein the axle seat is connected with a one-way rotating element, and the one-way rotating element has an inner ring connecting the driving sprocket and an outer ring, the The outer ring is connected with the shaft seat. 15 . The energy storage power assist system of claim 1 , wherein the first shell has a first protruding rod, the second shell has a second protruding rod, and the energy storage element has a first protruding rod. 16 . A fixing portion and a second fixing portion are respectively sleeved on the first protruding rod and the second protruding rod. 16. The bicycle energy storage power assist system as claimed in claim 1, wherein the energy storage element is a scroll spring. 17 . The energy storage power assist system of claim 16 , wherein the scrolling direction of the scroll spring is the same as the traveling direction of the bicycle. 18 . 18 . The energy storage power assist system of claim 1 , wherein the first shell member and the second shell member define an accommodation space for accommodating the energy storage element. 19 .

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