Power generation device for shock-proof cushion of bicycle

Abstract

The utility model provides a bicycle shock-proof cushion power generation device, which belongs to the technical field of new energy, and comprises a cushion body, the cushion body comprises a rotating shaft, the rotating shaft is an angle-fixable rotating shaft, a plurality of rotating rings are sleeved on the rotating shaft, one side of each rotating ring is fixedly provided with a piezoelectric power generation layer, and the piezoelectric power generation layer is fixed on the other side of each rotating ring. The piezoelectric power generation layer is electrically connected with an energy storage assembly and comprises a first piezoelectric power generation layer, a second piezoelectric power generation layer and a third piezoelectric power generation layer which are sequentially arranged, the top of the first piezoelectric power generation layer is fixedly connected with an upper steel plate, and the bottom of the third piezoelectric power generation layer is fixedly connected with a lower steel plate; a plurality of supporting springs are fixedly installed between the adjacent piezoelectric power generation layers, and the supporting springs are located on the sides, away from the rotating ring, of the piezoelectric power generation layers. The hierarchical piezoelectric power generation assembly is arranged in the shock-absorbing cushion, the power generation power and stability are remarkably improved, and the unique unilateral movement structure is combined with the supporting spring, so that the shock-absorbing cushion has a remarkable shock-absorbing effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy, and in particular relates to a bicycle shock-absorbing seat cushion power generation device. Background Art

[0002] In today's society, the concepts of sustainable development and green travel are gaining increasing popularity. Bicycles, as an environmentally friendly, convenient, and healthy means of transportation, have gained widespread popularity and adoption. With the continuous advancement of technology and people's pursuit of a more convenient lifestyle, bicycle self-generating technology has gradually become a research hotspot.

[0003] Traditional bicycles rely primarily on human power and have relatively limited functionality. However, in modern life, people often use various electronic devices while riding, such as smartphones, GPS navigation devices, and bicycle lights. These devices have limited battery life and require regular charging, which is inconvenient due to traditional charging methods that often rely on external power sources.

[0004] To address this issue, researchers have begun exploring bicycle self-generating technologies. Several methods for bicycle self-generating have been proposed and applied. A common approach involves using the wheels to drive a small generator, generating electricity from the wheel's rotation. While this method can provide power for electronic devices to a certain extent, it also has some drawbacks. For example, it increases the wheel's rotational resistance, affecting riding efficiency. For some specially designed bicycles, installing a generator may be space-constrained. Additionally, some bicycles utilize solar energy for power generation. While solar power generation offers advantages such as being pollution-free and renewable, it also has limitations. Solar power generation relies on weather conditions and may not function properly on cloudy, rainy days, or at night. Solar panels have relatively low power generation efficiency and are relatively expensive. Furthermore, the installation of solar panels may affect the bicycle's appearance and riding performance.

[0005] Currently, most bicycle seats primarily utilize traditional mechanical structures such as springs or rubber to achieve shock absorption. While these shock absorption methods can, to a certain extent, reduce the transmission of vibration from the road during riding and improve riding comfort, they only serve as passive buffers and are unable to effectively utilize the vibration energy during riding. Currently, there are some technologies that utilize vehicle vibration to generate electricity. These technologies typically involve the vibration driving a flywheel, which in turn cuts the magnetic flux lines, converting the mechanical energy of the vibration into electrical energy. However, this type of technology has numerous problems, such as numerous parts and complex structures, which make maintenance more difficult. Furthermore, due to the vehicle's poor shock absorption and frequent vibrations during driving, power generation is not stable enough. Therefore, there is an urgent need for a bicycle shock-absorbing seat power generation device to address the above issues. Utility Model Content

[0006] In order to solve the above technical problems, the utility model proposes a bicycle shock-absorbing seat cushion power generation device.

[0007] To achieve the above-mentioned purpose, the utility model provides a bicycle shock-absorbing seat cushion power generation device, including a seat cushion body, the seat cushion body including a rotating shaft, the rotating shaft being a rotating shaft with a fixed angle, a plurality of rotating rings being sleeved on the rotating shaft, a piezoelectric power generation layer being fixed on one side of the rotating ring, the piezoelectric power generation layer being electrically connected to an energy storage component, the piezoelectric power generation layer including a first piezoelectric power generation layer, a second piezoelectric power generation layer and a third piezoelectric power generation layer being arranged in sequence, the top of the first piezoelectric power generation layer being fixed with an upper steel plate, the bottom of the third piezoelectric power generation layer being fixed with a lower steel plate, a plurality of support springs being fixedly installed between adjacent piezoelectric power generation layers, the support springs being located on the side of the piezoelectric power generation layer away from the rotating ring.

[0008] Preferably, the bottom end of the lower steel plate is fixedly connected to a frame seat rod, and a shock-absorbing spring is sleeved on the outer side of the frame seat rod.

[0009] Preferably, the first piezoelectric power generation layer includes a first aluminum foil, the bottom end of the first aluminum foil is fixedly connected to the Ecoflex plate, and the top end of the first aluminum foil is fixedly connected to the upper steel plate.

[0010] Preferably, the second piezoelectric power generation layer includes a Kapton plate, a second aluminum foil epoxy resin plate, the second aluminum foil and the Ecoflex plate fixed in sequence.

[0011] Preferably, the third piezoelectric power generation layer includes the Kapton plate, the bottom end of the Kapton plate is fixedly connected to a third aluminum foil, and the bottom end of the third aluminum foil is fixedly connected to the lower steel plate.

[0012] Preferably, a through hole is formed on one side of the epoxy resin plate, the upper steel plate and the lower steel plate close to the rotating ring, and the through hole is fastened to the rotating ring by bolts.

[0013] Preferably, the outer cover of the seat cushion body is provided with a waterproof cloth, and a seat cover is provided outside the waterproof cloth.

[0014] Preferably, the energy storage assembly is fixedly connected below the lower steel plate.

[0015] Compared to the prior art, the present invention offers the following advantages and technical effects: The seat cushion itself incorporates a multi-layered structure, with upper and lower steel plates positioned at the top and bottom of the multi-layered structure, respectively. A multi-layered piezoelectric generator assembly is positioned between the two steel plates. Vibration generated by the bicycle during travel triggers the layered piezoelectric generator assembly to generate current. The mechanical energy generated by the vibration is converted into electrical energy and stored in the energy storage assembly. Multiple support springs are positioned at the ends of each power generation layer, with the total spring coefficient being less than that of the spring at the bottom of the shock-absorbing seat cushion itself. As the support springs contract, their other ends connect to the rotating shaft, resulting in a combined unilateral motion effect with the support springs, significantly enhancing shock absorption. Furthermore, an independent rotating shaft and rotating ring connect the piezoelectric generator layer, making it extremely easy to replace the generator layer and simplifying maintenance. By integrating the layered piezoelectric generator assembly into the shock-absorbing seat cushion, the present invention significantly improves power generation and stability. Furthermore, its unique unilateral motion structure, combined with the support springs, significantly enhances shock absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a diagram of the internal structure of the seat cushion body of the present invention;

[0019] Figure 3 This is a schematic structural diagram of the first piezoelectric power generation layer of the present invention;

[0020] Figure 4 This is a schematic structural diagram of the second piezoelectric power generation layer of the present invention;

[0021] Figure 5 This is a schematic structural diagram of the third piezoelectric power generation layer of the present invention;

[0022] In the figure: 1. Seat body; 2. Rotating shaft; 3. Rotating ring; 4. First piezoelectric power generation layer; 5. Second piezoelectric power generation layer; 6. Third piezoelectric power generation layer; 7. Upper steel plate; 8. Lower steel plate; 9. Support spring; 10. Frame seat rod; 11. Shock absorber spring; 12. First aluminum foil; 13. Ecoflex board; 14. Kapton board; 15. Epoxy resin board; 16. Second aluminum foil; 17. Third aluminum foil; 18. Through hole; 19. Waterproof cloth; 20. Seat cover. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] Reference Figure 1-Figure 5 As shown, the utility model provides a bicycle shock-absorbing seat cushion power generation device, a bicycle shock-absorbing seat cushion power generation device, including a seat cushion body 1, the seat cushion body 1 includes a rotating shaft 2, the rotating shaft 2 is a rotating shaft 2 with a fixed angle, a plurality of rotating rings 3 are sleeved on the rotating shaft 2, a piezoelectric power generation layer is fixed on one side of the rotating ring 3, the piezoelectric power generation layer is electrically connected to the energy storage component, the piezoelectric power generation layer includes a first piezoelectric power generation layer 4, a second piezoelectric power generation layer 5 and a third piezoelectric power generation layer 6 arranged in sequence, the top of the first piezoelectric power generation layer 4 is fixedly connected to an upper steel plate 7, the bottom of the third piezoelectric power generation layer 6 is fixedly connected to a lower steel plate 8, a plurality of support springs 9 are fixedly installed between adjacent piezoelectric power generation layers, and the support springs 9 are located on the side of the piezoelectric power generation layer away from the rotating ring 3.

[0026] The seat body 1 is equipped with a multi-layer structure. The upper steel plate 7 and the lower steel plate 8 are respectively arranged at the top and bottom layers of the multi-layer structure. A multi-layer piezoelectric power generation component is installed between the double-layer steel plates. The vibration generated by the bicycle during driving triggers the layered piezoelectric power generation component to generate current. The mechanical energy generated by the vibration is converted into electrical energy and stored in the energy storage component. At the end of the same power generation layer, multiple support springs 9 are provided in the upper and lower parts. The total elastic coefficient of the support springs 9 is less than the elastic coefficient of the spring at the bottom end of the shock-absorbing seat body 1. While the support spring 9 contracts, the other end is connected to the rotating shaft 2. The combined motion effect of the unilateral motion structure and the support spring 9 is achieved, which has a significant effect on shock absorption. At the same time, the independent rotating shaft 2 and the rotating ring 3 are connected to the piezoelectric power generation layer, which is extremely easy to replace the power generation layer and has low maintenance difficulty.

[0027] Furthermore, a spacing of no more than 5 mm is left between the upper and lower piezoelectric power generation layers at the front end so that the upper and lower layers can fit tightly together when vibration occurs.

[0028] Furthermore, the power generation principle of the piezoelectric power generation layer can refer to TENGs (friction nanogenerators), and the number of layers of the piezoelectric power generation layer is no less than five. Except for the first power generation layer and the third power generation layer, the other layers have the same structure as the second power generation layer.

[0029] According to a further optimized solution, a frame seat rod 10 is fixed to the bottom end of the lower steel plate 8 , and a shock-absorbing spring 11 is sleeved on the outer side of the frame seat rod 10 .

[0030] The bicycle frame seat rod 10 can connect the seat body 1 to the frame, and the total elastic coefficient of the support spring 9 cannot be greater than the shock-absorbing spring 11.

[0031] According to a further optimized solution, the first piezoelectric power generation layer 4 includes a first aluminum foil 12 , the bottom end of the first aluminum foil 12 is fixedly connected to the Ecoflex plate 13 , and the top end of the first aluminum foil 12 is fixedly connected to the upper steel plate 7 .

[0032] Ecoflex sheet 13 is made of commercial soft, elastic silicone rubber, which easily acquires electrons and exhibits a negative charge. The preparation method for Ecoflex sheet 13 is simple. A film is prepared by mixing industrial Ecoflex-A and Ecoflex-B adhesives in a 1:1 ratio. This film is then evenly applied to a mold using a coater, heated in a drying oven, and attached to the first aluminum foil 12.

[0033] According to a further optimized solution, the second piezoelectric power generation layer 5 includes a Kapton plate 14 , a second aluminum foil 16 , an epoxy resin plate 15 , a second aluminum foil 16 and an Ecoflex plate 13 fixed in sequence.

[0034] The Kapton board 14 is made of polyimide film material, which is easy to lose electrons and show positive charge. The epoxy resin board 15 has a thickness of 6mm-10mm and plays the role of support, interlayer insulation and interlayer isolation.

[0035] According to a further optimized solution, the third piezoelectric power generation layer 6 includes a Kapton plate 14 , a third aluminum foil 17 is fixed to the bottom end of the Kapton plate 14 , and a bottom end of the third aluminum foil 17 is fixed to the lower steel plate 8 .

[0036] The different piezoelectric generating layers are connected in parallel. Wires extending from each generating layer are connected to the positive and negative busses, respectively, regardless of polarity. The positive and negative busses connect to the energy storage assembly. Wires extending from the aluminum foil on the top of the Ecoflex board 13 in each generating layer are connected to one bus, while wires extending from the aluminum foil on the bottom of the Kapton board 14 in each generating layer are connected to another bus.

[0037] According to a further optimized solution, a through hole 18 is provided on one side of the epoxy resin plate 15 , the upper steel plate 7 and the lower steel plate 8 close to the rotating ring 3 , and the through hole 18 is fastened to the rotating ring 3 by bolts.

[0038] The provision of the through hole 18 facilitates independent maintenance of the piezoelectric power generation layer and simplifies the maintenance steps.

[0039] According to a further optimized solution, the outer cover of the seat cushion body 1 is provided with a waterproof cloth 19 , and a seat cover 20 is provided outside the waterproof cloth 19 .

[0040] The waterproof cloth 19 has good sealing performance and can prevent the energy storage component and the piezoelectric power generation component from getting water in. The seat cover 20 can prevent exposure to the sun.

[0041] To further optimize the solution, the energy storage assembly is fixedly connected below the lower steel plate 8.

[0042] The energy storage component includes a rectifier circuit, a primary energy storage capacitor, an anti-reverse current circuit, a battery protection circuit, and an energy storage battery.

[0043] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0044] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A bicycle shock-absorbing seat cushion power generation device, characterized by: The invention comprises a seat cushion body (1), wherein the seat cushion body (1) comprises a rotating shaft (2), wherein the rotating shaft (2) is a rotating shaft (2) with a fixed angle, wherein a plurality of rotating rings (3) are sleeved on the rotating shaft (2), wherein a piezoelectric power generation layer is fixed on one side of the rotating ring (3), wherein the piezoelectric power generation layer is electrically connected to an energy storage component, wherein the piezoelectric power generation layer comprises a first piezoelectric power generation layer (4), a second piezoelectric power generation layer (5) and a third piezoelectric power generation layer (6) which are arranged in sequence, wherein an upper steel plate (7) is fixed to the top of the first piezoelectric power generation layer (4), and a lower steel plate (8) is fixed to the bottom of the third piezoelectric power generation layer (6), and a plurality of supporting springs (9) are fixedly installed between adjacent piezoelectric power generation layers, wherein the supporting springs (9) are located on the side of the piezoelectric power generation layer away from the rotating ring (3).

2. The bicycle shock-absorbing seat power generation device according to claim 1, characterized in that: The bottom end of the lower steel plate (8) is fixedly connected to a frame seat rod (10), and a shock-absorbing spring (11) is sleeved on the outer side of the frame seat rod (10).

3. The bicycle shock-absorbing seat power generation device according to claim 1, characterized in that: The first piezoelectric power generation layer (4) comprises a first aluminum foil (12), the bottom end of the first aluminum foil (12) is fixedly connected to an Ecoflex plate (13), and the top end of the first aluminum foil (12) is fixedly connected to the upper steel plate (7).

4. The bicycle shock-absorbing seat cushion power generation device according to claim 3, characterized in that: The second piezoelectric power generation layer (5) comprises a Kapton plate (14), a second aluminum foil (16), an epoxy resin plate (15), the second aluminum foil (16) and the Ecoflex plate (13) which are fixed in sequence.

5. The bicycle shock-absorbing seat power generation device according to claim 4, characterized in that: The third piezoelectric power generation layer (6) includes the Kapton plate (14), the bottom end of the Kapton plate (14) is fixedly connected to a third aluminum foil (17), and the bottom end of the third aluminum foil (17) is fixedly connected to the lower steel plate (8).

6. The bicycle shock-absorbing seat power generation device according to claim 4, characterized in that: The epoxy resin plate (15), the upper steel plate (7) and the lower steel plate (8) are provided with a through hole (18) on one side close to the rotating ring (3), and the through hole (18) is fastened to the rotating ring (3) by bolts.

7. The bicycle shock-absorbing seat power generation device according to claim 1, characterized in that: The cushion body (1) is covered with a waterproof cloth (19), and a seat cover (20) is provided outside the waterproof cloth (19).

8. The bicycle shock-absorbing seat power generation device according to claim 1, characterized in that: The energy storage assembly is fixedly connected below the lower steel plate (8).

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