Self-powered light-emitting roller skate

Abstract

This invention relates to a self-generating luminous roller skate, belonging to the fields of roller skates and new energy technology. The system includes a shoe body, wheel frame, rollers, and axle. The shoe body is mounted on the wheel frame, and the rollers are mounted on the vertical wall of the wheel frame via the axle. The rollers consist of a hub and a tire with LED lights. The hub consists of a wheel sleeve and a disc. Coaxial inner and outer cylinders are evenly distributed on the disc. The inner cylinder is shorter than the outer cylinder and is placed inside the outer cylinder. The inner and outer cylinders are connected by a ring plate. The outer wall of the inner cylinder, the inner wall of the outer cylinder, and the ring plate form a ring cavity. A ring-shaped coil is installed in the ring cavity and is wrapped around the inner cylinder. A spherical moving magnet is installed in the inner cylinder cavity. The coil and the moving magnet constitute a power generation unit. Gaskets or circuit boards are provided between the two ends of the inner cylinder and the tire. Fixed magnets are installed on one or both sides of the wheel frame vertical wall. When the roller rotates relative to the wheel frame, the fixed magnets apply a rotational torque to the moving magnets. The moving magnets rotate rapidly while rotating with the rollers. The coils cut the magnetic force and convert mechanical energy into electrical energy. The electrical energy is then processed and supplied to the LED lights.

Description

Technical Field

[0001] This invention belongs to the field of roller skates and new energy technology, specifically relating to a self-generating luminous roller skate. Background Technology

[0002] Roller skating has gradually become a popular leisure and fitness activity. To improve the intelligence and controllability of roller skates, people increasingly favor intelligent roller skates with features such as location tracking, speed monitoring, and light or sound alerts. However, currently, these electronically controlled roller skates rely solely on batteries for power, unnecessarily increasing the size and weight of the skates. Most importantly, they are prone to losing some functions when the batteries are depleted during outdoor activities or long-distance skating. Therefore, there is an urgent need to develop roller skates that can generate their own electricity to achieve energy self-sufficiency for features such as location tracking, speed monitoring, and light or sound alerts. Summary of the Invention

[0003] This invention proposes a self-generating luminous roller skate, which mainly includes a shoe body, a wheel frame, rollers, and axles. The shoe body is mounted on the crossbeam of the wheel frame, the rollers are fitted onto the axles, the axles are mounted on the vertical wall of the wheel frame, and a power generation unit is installed on the rollers. The power generation unit consists of a coil and a moving magnet.

[0004] The axle consists of an axle body and studs at both ends of the axle body. The axle body and studs are an integral structure, and the diameter of the axle body is larger than the diameter of the studs.

[0005] The roller consists of a hub and a tire. The tire is mounted on the hub using an injection molding method. LED lights are embedded in the tire, which is made of a transparent material, either rubber or plastic.

[0006] The wheel hub consists of a wheel sleeve with a wheel hole and a wheel disc. Both ends of the outer edge of the wheel sleeve are provided with annular grooves, and the sidewall of the tire is embedded in the annular grooves on the wheel sleeve.

[0007] The wheel has coaxial inner and outer cylinders evenly distributed on it. The inner cylinder is nested inside the outer cylinder and is shorter than the outer cylinder. The inner cylinder cavity is a through cavity. The outer wall of the inner cylinder is connected to the inner wall of the outer cylinder via a ring plate. The outer wall of the outer cylinder is fixed on the wheel. The axes of the inner and outer cylinders are perpendicular to the wheel and the ring plate. The outer wall of the inner cylinder, the inner wall of the outer cylinder, and the ring plate form a ring cavity, which is symmetrically arranged on both sides of the ring plate.

[0008] A coil is installed inside the annular cavity, and a spherical moving magnet is installed inside the inner cylinder cavity. The coil has a ring structure, and the inner hole of the coil is fitted onto the inner cylinder. The coil and the moving magnet constitute a power generation unit. Gaskets or circuit boards are provided between the two ends of the inner cylinder and the tire. At least one end of the inner cylinder is provided with a circuit board. The gaskets separate the moving magnet and coil from the tire. The axis of the coil is parallel to the axis of the wheel axle and the roller. The wheel frame, wheel axle, and wheel hub are all made of non-ferromagnetic materials.

[0009] In this invention, the maximum number of power generation units that can be installed on each roller, i.e. the shortest distance between two adjacent power generation units in the circumferential direction, must satisfy the following: there is no magnetic coupling force between the moving magnets in the two adjacent power generation units in the circumferential direction, or there is a coupling force, but the coupling force is less than the force between the moving magnet and the stationary magnet, i.e. the stationary magnet can be related to the magnetic poles of the two moving magnets.

[0010] The roller is mounted on the axle through the wheel hole and is axially positioned by two inner nuts. The roller can rotate freely around the axle. The two inner nuts are mounted on the studs at both ends of the axle and abut against both sides of the axle. The roller is located between the two inner nuts and can rotate relative to the inner nuts. The axle is mounted on the wheel frame wall by the two inner nuts and two outer nuts. The studs at both ends of the axle are located in the slots of the two wheel frame walls. The inner nuts and outer nuts press the axle onto the wheel frame wall.

[0011] Fixed magnets are installed on the wheel frame walls on one or both sides of the rollers by screws, and only one fixed magnet is installed on each side of each roller. The fixed magnets are cubes, cylinders or spheres. The fixed magnets and moving magnets are equidistant from the wheel axle, that is, the axis of the fixed magnet and the axis of the moving magnet are equidistant from the axis of the wheel axle.

[0012] When fixed magnets are screwed onto the upright walls of the wheel frame on both sides of the roller, the magnetic poles of the fixed magnets are arranged along the axial direction of the roller. The like poles of the fixed magnets are installed opposite each other and staggered. The staggered installation of the two fixed magnets means that the distance between their geometric centers is the maximum possible distance. Figure 1 As shown, the distance between the two fixed magnets is greatest when they are installed close to the two sides of the wheel frame wall.

[0013] When multiple fixed magnets are installed on the vertical wall of the wheel frame on only one side of the roller by screws, the magnetic poles of the fixed magnets are arranged along the circumference of the roller, and the magnetic poles are arranged in the same direction.

[0014] When people skate on roller skates, the rollers rotate relative to the axle and frame, and the moving magnet and the stationary magnet alternately approach and separate, generating alternating forces between them. Because the moving magnet is a non-fixed, freely rotating sphere, an attractive force is generated between the stationary and moving magnets as they gradually approach and move away. As the moving magnet moves away from the stationary magnet, the stationary magnet applies a rotational torque to the moving magnet, causing it to rotate rapidly on its own axis while rotating with the rollers. The two magnetic poles of the moving magnet and the direction and intensity of the magnetic field they form change rapidly, meaning the direction and intensity of the magnetic field passing through the coil outside the moving magnet change rapidly. The coil generates electricity by cutting magnetic lines of force, converting mechanical energy into electrical energy.

[0015] Unlike existing electromagnetic power generation methods that rely on changes in magnetic field strength caused by a moving magnet located outside the coil, the power generation unit in this invention mainly changes the magnetic field strength and direction by the rotation of a moving magnet inside the coil, thereby causing the coil to cut magnetic lines of force to generate electricity. The function of the stationary magnet is to force the moving magnet to rotate rapidly. During the rotation of the moving magnet inside the coil, the magnetic field direction at which the magnetic field strength is at its maximum is parallel to the coil axis. The change in magnetic field strength caused by the change in the direction of the magnetic field inside the coil is large, and the moving magnet can generate multiple rotations and the coil can cut magnetic lines of force multiple times when excited once. Therefore, the power generation capacity is strong, the output voltage is high, and the amount of electricity is large.

[0016] In this invention, the electrical energy generated by the power generation unit is transmitted to the circuit board via wires. When multiple power generation units generate electricity, they each use independent wires and rectifier bridges to output to the circuit board. The circuit board is equipped with an energy management and output control unit, and the electrical energy is supplied to the LED lights after conversion.

[0017] In this invention, to obtain better power generation capability, the parameter relationship between coil x and moving magnet y is: δ=T / D0=0.6±0.4, η=V / D0=2.25±0.75, β=H / D0=1.3±0.7, where D0 is the diameter of moving magnet y, T and V are the wall thickness and outer diameter of coil x respectively, and H is the total height of the two coils x after assembly.

[0018] Advantages and features: It has a self-generating function, which facilitates the implementation of light warnings for gliding in urban areas; the power generation unit is non-contact toggled excitation, with a simple structure and excitation method, high mechanical reliability, and can generate multiple times with a single excitation and rapid change of magnetic field gradient, resulting in large power output and high output voltage. Attached Figure Description

[0019] Figure 1 This is a simplified diagram of the system configuration of the roller skates in a preferred embodiment of the present invention;

[0020] Figure 2 yes Figure 1 YY sectional view in the middle;

[0021] Figure 3 yes Figure 2 XX sectional view;

[0022] Figure 4 This is a schematic diagram of the pulley structure in a preferred embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the hub structure in a preferred embodiment of the present invention;

[0024] Figure 6 yes Figure 5 The left view;

[0025] Figure 7This is a schematic diagram of the wheel axle structure in a preferred embodiment of the present invention. Detailed Implementation

[0026] This invention proposes a self-generating luminous roller skate, which mainly includes a shoe body D, a wheel frame B, a roller A, and a wheel axle C. The shoe body D is mounted on the crossbeam b1 of the wheel frame, the roller A is fitted onto the wheel axle C, the wheel axle C is mounted on the vertical wall b2 of the wheel frame, and a power generation unit E is mounted on the roller A. The power generation unit E consists of a coil x and a moving magnet y.

[0027] The axle C consists of an axle body c1 and studs c2 set at both ends of the axle body c1. The axle body c1 and the studs c2 are an integral structure, and the diameter of the axle body c1 is larger than the diameter of the studs c2.

[0028] Roller A consists of a hub a and a tire e. The tire e is mounted on the hub a. The tire e is mounted on the hub a by injection molding. An LED light i is embedded in the tire e. The tire e is made of transparent material. The material of the tire e is rubber or plastic.

[0029] The hub a consists of a wheel sleeve a1 with a wheel hole a8 and a wheel disc a2. Both ends of the outer edge of the wheel sleeve a1 are provided with annular grooves a9, and the sidewall of the tire e is embedded in the annular grooves a9 on the wheel sleeve a1.

[0030] The wheel a2 has coaxial inner cylinder a4 and outer cylinder a3 evenly distributed on it. The inner cylinder a4 is fitted inside the outer cylinder a3. The inner cylinder a4 is shorter than the outer cylinder a3. The inner cylinder cavity a7 is a through cavity. The outer wall of the inner cylinder a4 is connected to the inner wall of the outer cylinder a3 via the ring plate a5. The outer wall of the outer cylinder a3 is fixed on the wheel a2. The axes of the inner cylinder a4 and the outer cylinder a3 are perpendicular to the wheel a2 and the ring plate a5. The outer wall of the inner cylinder a4, the inner wall of the outer cylinder a3 and the ring plate a5 form the annular cavity a6. The annular cavity a6 is symmetrically arranged on both sides of the ring plate a5.

[0031] A coil x is installed inside the annular cavity a6, and a moving magnet y is installed inside the inner cylinder cavity a7. The coil x has a ring structure, and the inner hole of the coil x is fitted onto the inner cylinder a4. The moving magnet y is a sphere. The coil x and the moving magnet y constitute a power generation unit E. Gaskets h or circuit boards p are provided between the two ends of the inner cylinder a4 and the tire e. At least one end of the inner cylinder a4 is provided with a circuit board p. Gaskets h separate the moving magnet y and the coil x from the tire e. The axis of the coil x is parallel to the axis of the wheel axle C and the roller A. The materials of the wheel frame B, the wheel axle C, and the wheel hub a are all non-ferromagnetic materials.

[0032] In this invention, the maximum number of power generation units E that can be installed on each roller A, i.e. the shortest distance between two adjacent power generation units E in the circumferential direction, must satisfy the following: there is no magnetic coupling force between the moving magnets y in the two adjacent power generation units E in the circumferential direction, or there is a coupling force, but the coupling force is less than the force between the moving magnet and the stationary magnet, i.e. the stationary magnet can be related to the magnetic poles of the two moving magnets.

[0033] Roller A is mounted on the shaft body c1 of axle C through wheel hole a8 and is axially positioned by two inner nuts f. Roller A can rotate freely around the shaft body c1 of axle C. The two inner nuts f are mounted on the studs c2 at both ends of axle C and abut against both sides of shaft body c1 respectively. Roller A is located between the two inner nuts f and can rotate relative to the inner nuts f. Axle C is mounted on the wheel frame wall b2 through two inner nuts f and two outer nuts g. The studs c2 at both ends of axle C are located in the slots of the two wheel frame walls b2 respectively. The inner nuts f and outer nuts g press the axle onto the wheel frame wall b2.

[0034] A fixed magnet w is installed on the wheel frame wall b2 on one or both sides of roller A by screws, and only one fixed magnet w is installed on each side of each roller A. The fixed magnet w is a cube, cylinder or sphere. The fixed magnet w and the moving magnet y are equidistant from the wheel axle C, that is, the axis of the fixed magnet w and the axis of the moving magnet y are equidistant from the axis of the wheel axle C.

[0035] When fixed magnets w are screwed onto the wheel frame walls b2 on both sides of roller A, the magnetic poles of the fixed magnets w are arranged along the axial direction of roller A, and the like magnetic poles of the fixed magnets w are installed opposite each other and staggered. The staggered installation of the two fixed magnets w means that the distance between their geometric centers is the maximum possible distance. Figure 1 As shown, the distance between the two fixed magnets w is the largest when they are installed close to the two sides of the wheel frame wall b2.

[0036] When multiple fixed magnets w are installed on the wheel frame wall b2 on one side of roller A by screws, the magnetic poles of the fixed magnets w are arranged along the circumference of roller A, and the magnetic poles are arranged in the same direction.

[0037] When people skate on roller skates, roller A rotates relative to axle C and frame B. Moving magnet y and fixed magnet w alternately approach and separate, generating alternating forces between them. Because moving magnet y is a non-fixed, freely rotating sphere, attractive forces are generated between the fixed magnet w and moving magnet y as they gradually approach and move away. As moving magnet y moves away from fixed magnet w, fixed magnet w applies a rotational torque to moving magnet y. Moving magnet y rotates rapidly on its own axis while rotating with roller A. The two magnetic poles of moving magnet y and the direction and intensity of the magnetic field they form change rapidly. That is, the direction and intensity of the magnetic field of coil x passing through the outside of moving magnet y change rapidly. Coil x generates electricity by cutting magnetic lines of force, converting mechanical energy into electrical energy.

[0038] Unlike existing electromagnetic power generation methods that rely on changes in magnetic field strength caused by a moving magnet located outside the coil, the power generation unit E in this invention mainly changes the magnetic field strength and direction by rotating the moving magnet y inside the coil x, thereby causing the coil x to cut magnetic lines of force to generate electricity. The function of the stationary magnet w is to force the moving magnet y to rotate rapidly. During the rotation of the moving magnet y inside the coil x, the magnetic field direction when the magnetic field strength is at its maximum is parallel to the coil axis. The change in magnetic field strength caused by the change in the direction of the magnetic field inside the coil x is large, and the moving magnet y can generate multiple rotations and the coil x can cut magnetic lines of force multiple times when excited once. Therefore, the power generation capacity is strong, the output voltage is high, and the amount of electricity is large.

[0039] In this invention, the electrical energy generated by the power generation unit E is transmitted to the circuit board p via wires. When multiple power generation units E generate electricity, they each use independent wires and rectifier bridges to output to the circuit board p. The circuit board p is equipped with an energy management and output control unit, and the electrical energy is supplied to the LED lamp i after conversion processing.

[0040] In this invention, to obtain better power generation capability, the parameter relationship between coil x and moving magnet y is: δ=T / D0=0.6±0.4, η=V / D0=2.25±0.75, β=H / D0=1.3±0.7, where D0 is the diameter of moving magnet y, T and V are the wall thickness and outer diameter of coil x respectively, and H is the total height of the two coils x after assembly.

Claims

1. A self-generating luminous roller skate, mainly comprising a shoe body, a wheel frame, rollers, and an axle; the tire is made of a transparent material, and the wheel frame, axle, and hub are made of non-ferromagnetic material; the shoe body is mounted on the wheel frame crossbeam, the rollers are fitted onto the axle, the axle is mounted on the wheel frame vertical wall, the rollers consist of a hub and a tire embedded with LED lights, the hub consists of a wheel sleeve and a wheel disc, the wheel disc has coaxial inner and outer cylinders evenly distributed, the inner cylinder is fitted inside the outer cylinder, the inner cylinder is shorter than the outer cylinder, the inner cylinder cavity is a through cavity, the outer wall of the inner cylinder is connected to the inner wall of the outer cylinder via a ring plate, the outer wall of the outer cylinder is fixed to the wheel disc; a fixed magnet is mounted on one or both sides of the wheel frame vertical wall; the axes of the inner and outer cylinders are perpendicular to the wheel disc and the ring plate; the outer wall of the inner cylinder, the inner wall of the outer cylinder, and the ring plate form a ring cavity; characterized in that: A ring-shaped coil is installed inside the inner cylinder, which contains a spherical moving magnet. The coil and the moving magnet constitute a power generation unit. The power generation unit primarily generates electricity by altering the magnetic field strength and direction through the rotation of the moving magnet inside the coil, causing the coil to cut magnetic lines of force. The function of the stationary magnet is to force the moving magnet to rotate rapidly. During the rotation of the moving magnet inside the coil, the magnetic field direction at its maximum intensity is parallel to the coil axis. The change in magnetic field strength caused by the change in the direction of the magnetic field inside the coil is significant, and the moving magnet can generate multiple rotations and multiple cuts of magnetic lines of force by a single excitation. A circuit board is installed between one end of the inner cylinder and the tire. The parameter relationship between the coil and the moving magnet is: T / D0 = 0.6 ± 0.4, V / D0 = 2.25 ± 0.

75. H / D0 = 1.3 ± 0.7, where D0 is the diameter of the moving magnet, T and V are the wall thickness and outer diameter of the coil, respectively, and H is the total height of the two coils after assembly. The magnetic coupling force between the moving magnets in the two adjacent power generation units in the two circumferential directions is less than the force between the moving magnet and the stationary magnet. When stationary magnets are installed on both wheel frame walls of the roller, the magnetic poles of the stationary magnets are arranged along the roller axis and in opposite directions. When multiple stationary magnets are installed on only one side of the wheel frame wall of the roller, the magnetic poles of the stationary magnets are arranged along the circumferential direction of the roller and in the same direction. When the roller rotates relative to the wheel frame, the stationary magnets apply a rotational torque to the moving magnets. The moving magnets rotate rapidly along with the rollers. The coils cut the magnetic force and convert mechanical energy into electrical energy. The electrical energy is then converted and supplied to the LED lights.

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