A bicycle brake energy storage device

Abstract

This utility model discloses a bicycle brake energy storage device, including a central fixed shaft, an energy storage mechanism and a control mechanism respectively sleeved outside the central fixed shaft, and a transmission mechanism installed within the control mechanism. The energy storage mechanism includes a spring barrel, a mounting boss outside the spring barrel, a spring support installed inside the spring barrel, and a spring wound around the spring support. The bicycle spokes are fixedly connected to the outer circumference of the spring barrel. The control mechanism includes a brake disc and a brake synchronization cylinder fixedly connected to the brake disc. The transmission mechanism includes a planetary gear assembly, which is drively connected to both the control mechanism and the energy storage mechanism. This utility model has a simple structure, is easy to install, reduces manufacturing difficulty, and improves the efficiency of brake energy recovery.

Description

Technical Field

[0001] This utility model relates to the field of bicycle accessories, specifically to a bicycle brake energy storage device. Background Technology

[0002] Traditional bicycles use chain drive, a rigid transmission system lacking cushioning and energy storage. They also require dedicated brakes, which convert the energy of the bicycle's movement into friction to stop it. While current technology addresses these issues by converting the kinetic energy of the wheels into elastic potential energy during braking, existing technologies suffer from complex structures, manufacturing difficulties, and low recovery efficiency, hindering their commercialization. Therefore, to overcome the shortcomings of existing technologies, improvements are necessary. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies in the existing technology and provide a bicycle brake energy storage device that is simple in structure and easy to install.

[0004] This utility model is achieved through the following technical solution: a bicycle brake energy storage device, comprising a central fixed shaft, an energy storage mechanism and a control mechanism respectively sleeved outside the central fixed shaft, and a transmission mechanism installed in the control mechanism. The energy storage mechanism includes a spring barrel, a mounting boss disposed outside the spring barrel, a spring bracket installed inside the spring barrel, and a spring wound on the spring bracket. The spokes of the bicycle are respectively fixedly connected to the circumferential outer side of the spring barrel. The control mechanism includes a brake disc and a brake synchronization cylinder fixedly connected to the brake disc. The transmission mechanism includes a planetary gear assembly, which is drively connected to the control mechanism and the energy storage mechanism respectively.

[0005] Furthermore, the mainspring barrel is provided with several positioning posts on its outer periphery, the inner end of the mainspring is fixed to the mainspring bracket, and the outer end of the mainspring is fixed to the positioning posts.

[0006] Furthermore, the planetary gear assembly includes a sun gear, a sun gear center sleeve mounted on the sun gear, planet gears, a planetary support carrier, and an internal gear ring.

[0007] Furthermore, the planetary support frame, the sun gear, and the sun gear center sleeve are sequentially sleeved on the outside of the central fixed shaft, and a one-way needle roller bearing is provided between the sun gear center sleeve and the central fixed shaft.

[0008] Furthermore, the planetary support frame is mounted on the mounting boss and is linked to the mounting boss.

[0009] Furthermore, a first thin-walled bearing is provided between the outer side of the planetary support frame and the brake synchronization cylinder, and a planetary support frame bearing is provided between the planetary support frame and the central fixed shaft.

[0010] Furthermore, the spring support is sleeved outside the central sleeve of the sun gear and is linked to the central sleeve of the sun gear.

[0011] Furthermore, a mainspring barrel support bearing is provided between the inner side of the mounting boss and the outer side of the sun gear center sleeve.

[0012] Furthermore, the internal gear ring is installed inside the brake synchronizing cylinder and moves in conjunction with the brake synchronizing cylinder.

[0013] Furthermore, a second thin-walled bearing is provided between the outer side of the mounting boss and the inner side of the brake synchronization cylinder.

[0014] Compared with existing technologies, this utility model converts the kinetic energy of the wheel during braking into elastic potential energy through a spring, and realizes the transmission connection for spring winding through a planetary gear assembly. The overall structure is simple, easy to install, and has high efficiency in recovering braking energy. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the bicycle brake energy storage device of this utility model.

[0017] Figure 2 This is a cross-sectional schematic diagram of the bicycle brake energy storage device of this utility model.

[0018] Figure 3 This is an exploded view of the bicycle brake energy storage device of this utility model.

[0019] In the diagram: 1-Central fixed shaft; 2-Energy storage mechanism; 3-Control mechanism; 4-Transmission mechanism; 5-Gundam; 6-Mounting boss; 7-Gundam support; 8-Gundam; 9-Brake disc; 10-Brake synchronizing cylinder; 11-Positioning pin; 12-Sun gear; 13-Sun gear center sleeve; 14-Planet gear; 15-Planet support frame; 16-Internal gear ring; 17-One-way needle roller bearing; 18-First thin-walled bearing; 19-Planet support frame bearing; 20-Gundam support bearing; 21-Second thin-walled bearing; 22-Spindle anti-rotation block; 23-Mounting groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 3 The present invention discloses a bicycle brake energy storage device, comprising a central fixed shaft 1, an energy storage mechanism 2 and a control mechanism 3 respectively sleeved on the central fixed shaft 1, and a transmission mechanism 4 installed in the control mechanism 3. The energy storage mechanism 2 includes a spring barrel 5, a mounting boss 6 disposed on the outside of the spring barrel 5, a spring bracket 7 installed in the spring barrel 5, and a spring 8 wound on the spring bracket 7. The spokes of the bicycle are respectively fixedly connected to the outer circumference of the spring barrel 5. The control mechanism 3 includes a brake disc 9 and a brake synchronization cylinder 10 fixedly connected to the brake disc 9. The transmission mechanism 4 includes a planetary gear assembly, which is transmittedly connected to the control mechanism 3 and the energy storage mechanism 2 respectively.

[0022] The mainspring barrel 5 has several positioning posts 11 on its outer perimeter. The inner end of the mainspring 8 is fixed to the mainspring bracket 7, and the outer end of the mainspring 8 is fixed to the positioning posts 11. The mainspring bracket 7 has a mounting groove 23, and the inner end of the mainspring 8 can be engaged in the mounting groove 23.

[0023] The planetary gear assembly includes a sun gear 12, a sun gear center sleeve 13 mounted on the sun gear 12, planet gears 14, a planetary support carrier 15, and an internal gear ring 16. In one specific embodiment, the planetary gear assembly includes three planet gears 14, with the sun gear 12 and the planet gears 14 having the same outer diameter.

[0024] The planetary support frame 15, the sun gear 12 and the sun gear center sleeve 13 are sequentially sleeved on the outside of the center fixed shaft 1, and a one-way needle roller bearing 17 is provided between the sun gear center sleeve 13 and the center fixed shaft 1.

[0025] The planetary support frame 15 is mounted on the mounting boss 6 and is linked to the mounting boss 6.

[0026] A first thin-walled bearing 18 is provided between the outer side of the planetary support frame 15 and the brake synchronization cylinder 10, and a planetary support frame bearing 19 is provided between the planetary support frame 15 and the central fixed shaft 1.

[0027] The spring support 7 is mounted outside the sun gear central sleeve 13 and is linked to the sun gear central sleeve 13.

[0028] A spring box support bearing 20 is provided between the inner side of the mounting boss 6 and the outer side of the sun gear center sleeve 13.

[0029] The internal gear ring 16 is installed inside the brake synchronizing cylinder 10 and moves in conjunction with the brake synchronizing cylinder 10.

[0030] A second thin-walled bearing 21 is provided between the outer side of the mounting boss 6 and the inner side of the brake synchronization cylinder 10.

[0031] The central fixed shaft 1 is provided with anti-rotation support blocks 22 at both ends, which facilitates the installation and fixation of the central fixed shaft 1.

[0032] Working principle: When the bicycle is being ridden normally, the central fixed shaft 1 is fixed to the frame and does not rotate. The mainspring barrel 5 rotates synchronously with the vehicle. The outer end of the mainspring 8 rotates with the mainspring barrel 5. The inner end of the mainspring 8 drives the mainspring bracket 7 to rotate. The mainspring bracket 7 is connected to the sun gear center sleeve 13. The sun gear center sleeve 13 is connected to the sun gear 12 and drives the planetary gear 14 and planetary support frame 15 to rotate. The planetary support frame 15 drives the internal gear ring 16 and brake disc 9 to rotate. The speeds of the energy storage mechanism 2, the transmission mechanism 4 and the control mechanism 3 are all 1:1:1. When the bicycle begins to brake, the brake disc 9 does not rotate, nor does the internal gear ring 16, which is fixedly connected to the brake disc 9. Since the planetary support frame 15 is fixedly connected to the mainspring barrel 5, the planetary support frame 15 rotates synchronously with the wheel, driving the planetary gear 14 to rotate. Then, the planetary gear 14 drives the sun gear 12 to rotate. The speed ratio between the outer and inner ends of the mainspring 8 is 1:4, meaning the angular velocity of the inner end of the mainspring 8 is faster than that of the outer end. This creates a speed difference of 1:3, achieving synchronous winding of the mainspring 8. When the bicycle releases kinetic energy, the one-way needle roller bearing 17 prevents the mainspring bracket 7 from rotating in the opposite direction. At this time, the mainspring bracket 7 does not rotate, and the outer end of the mainspring 8 drives the mainspring barrel 5 to rotate, causing the wound mainspring 8 to release kinetic energy. Since the mainspring barrel 5 is connected to the spokes of the wheel, the wheel begins to rotate, achieving the effect of power assist.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bicycle brake energy storage device, characterized in that: The bicycle includes a central fixed shaft, an energy storage mechanism and a control mechanism respectively sleeved outside the central fixed shaft, and a transmission mechanism installed inside the control mechanism. The energy storage mechanism includes a mainspring barrel, a mounting boss outside the mainspring barrel, a mainspring bracket installed inside the mainspring barrel, and a mainspring wound on the mainspring bracket. The spokes of the bicycle are fixedly connected to the outer circumference of the mainspring barrel. The control mechanism includes a brake disc and a brake synchronization cylinder fixedly connected to the brake disc. The transmission mechanism includes a planetary gear assembly, which is drively connected to the control mechanism and the energy storage mechanism respectively.

2. The bicycle brake energy storage device according to claim 1, characterized in that: The mainspring barrel is provided with several positioning posts on its outer periphery. The inner end of the mainspring is fixed to the mainspring bracket, and the outer end of the mainspring is fixed to the positioning posts.

3. The bicycle brake energy storage device according to claim 1, characterized in that: The planetary gear assembly includes a sun gear, a sun gear center sleeve mounted on the sun gear, planet gears, a planetary support carrier, and an internal gear ring.

4. The bicycle brake energy storage device according to claim 3, characterized in that: The planetary support frame, the sun gear, and the sun gear center sleeve are sequentially sleeved on the outside of the central fixed shaft, and a one-way needle roller bearing is provided between the sun gear center sleeve and the central fixed shaft.

5. The bicycle brake energy storage device according to claim 4, characterized in that: The planetary support frame is mounted on the mounting boss and is linked to the mounting boss.

6. The bicycle brake energy storage device according to claim 4, characterized in that: A first thin-walled bearing is provided between the outer side of the planetary support frame and the brake synchronization cylinder, and a planetary support frame bearing is provided between the planetary support frame and the central fixed shaft.

7. The bicycle brake energy storage device according to claim 3, characterized in that: The spring support is sleeved outside the central sleeve of the sun gear and is linked to the central sleeve of the sun gear.

8. The bicycle brake energy storage device according to claim 3, characterized in that: A mainspring barrel support bearing is provided between the inner side of the mounting boss and the outer side of the sun gear center sleeve.

9. The bicycle brake energy storage device according to claim 3, characterized in that: The internal gear ring is installed inside the brake synchronization cylinder and moves in conjunction with the brake synchronization cylinder.

10. The bicycle brake energy storage device according to claim 1, characterized in that: A second thin-walled bearing is provided between the outer side of the mounting boss and the inner side of the brake synchronization cylinder.

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