CN105634204A - Mechanical energy power generation device employing feet of human body - Google Patents

Abstract

The invention discloses a human body foot mechanical energy generating device, which includes a magnet group, an air pressure bag, a motor casing, a filter screen, a hose, a bracket, a motor, an impeller, and an energy processing module; The symmetrical two ends of the air bag are connected to the small-diameter port of the motor casing through a hose. The motor is arranged inside the motor casing and fixed on the bracket. The impeller is installed on the shaft of the motor. The output port is correspondingly connected with the input port of the energy processing module through wires, and the energy processing module is provided with a USB port, and the current output by the energy processing module is rectified and stored, and then output through the USB port for voltage stabilization. This invention can not only convert mechanical energy into electrical energy, which solves the problem that the airbag is easily damaged, but also fully absorbs the energy of the human body's stepping pressure and effectively converts it into electrical energy.

Description

A human foot mechanical energy generating device

technical field

The invention belongs to the technical field of energy saving of daily necessities, and in particular relates to a mechanical energy generating device for human feet.

Background technique

The mechanical energy generated by human movement is a common renewable green energy. Compared with traditional new energy sources such as solar energy, wind energy, water energy and nuclear energy, it not only has the characteristics of alleviating the energy crisis, but also has the characteristics of being mobile, on-demand, It has unique advantages such as little impact on the natural environment and low capture cost. On the one hand, mechanical energy capture technology can collect the energy dissipated in the form of heat energy during the buffer braking process of various activities such as industrial production, life, work, entertainment and fitness, and convert it into electrical energy; on the other hand, current wearable electronic devices With the rapid development, the traditional battery power supply has great defects, namely, large volume, replacement cost, and serious environmental pollution caused by discarded batteries. Therefore, human mechanical energy will be widely used in future wearable electronic devices.

At present, there are many kinds of power generation shoes, and the most common one is to use the displacement of the sole of the foot when the human body walks, which is converted into the rotation of the shaft of the rotary motor through the transmission device, or the reciprocating motion of the mover of the linear motor to generate electricity. The transmission device can be roughly divided into rod transmission, gear transmission, hydraulic transmission, pneumatic transmission and so on. For example, in his patent application titled "Pressure Power Generation Shoes" (201010577776.1), Gu Chenyue proposed a method of using the human body to step on the pressure-bearing sheet of the foot to cause the vertical displacement of the pressure-bearing sheet. The vertical displacement is converted into the rotation of the micro-motor shaft in the cavity of the sole. When the foot is lifted off the ground, the spring under the pressure-bearing sheet will reset the pressure-bearing sheet to realize reciprocating motion and generate electric energy. The spring in the patented power generation shoe It is prone to fatigue, and the transmission rod is also easy to wear; in addition, the vertical displacement of the human body is small when walking, which also leads to low efficiency of this energy conversion method. Another example is the power generation device disclosed by Ye Mingxiang in his patent "Power Generation Shoes" (200520105738.0), which converts the displacement in the vertical direction of the sole through the gear meshing with the rack into the rotation of the gear, and then drives the power generation through the acceleration of the transmission gear. The crank shaft rotates to generate electricity, thereby realizing the conversion of mechanical energy to electrical energy. The meshing parts of this transmission device, especially the meshing parts of the rack and the gear, are very easy to wear and tear, and may eventually disengage; and the weight is heavy, which brings great inconvenience to human walking. . The power generation device disclosed by Dou Lihua in her patent "A Human Foot Mechanical Energy Generating Device" (CN104009608A) uses a hydraulic transmission to convert the pressing displacement of the human foot into the mover displacement of its linear generator. When the heel is on the ground, step on the hydraulic bladder at the heel, and the liquid in the bladder impacts the magnet piston, and the mover moves toward the toe; sports. When the human body walks, the magnet piston reciprocates in the casing around the coil, that is, the stator, to generate electricity; the power generation device disclosed by Lu Xiaoxian in his patent "A Shoe with Power Generation" (201220126698.8) uses two air cushions at the heel and toe, Alternately press the air cushions of the heels and toes to squeeze the gas, so that the gas passes through the conduit and the one-way valve to form a circulating airflow, and the airflow impacts the impeller of the micro-motor installed in the conduit, so that the impeller drives the motor shaft to rotate, thereby generating electricity. The two devices disclosed in these two patents are simple in structure, but a large part of the time when the human body walks is that the heels and toes touch the ground at the same time. At this time, the two liquid bladders or air cushions will be subject to great pressure and are easily damaged.

Contents of the invention

In order to solve the above problems, the present invention provides a mechanical energy generating device for human feet, which can not only convert mechanical energy into electrical energy, solve the problem that the airbag is easily damaged, but also fully absorb the energy of the human body's trampling and effectively convert it into electrical energy.

Realize the embodiment of the present invention as follows:

A human foot mechanical energy generating device, the device is arranged at the bottom of the shoe, and the device includes a magnet group, an air bag, a motor casing, a filter, a hose, a bracket, a motor, an impeller and an energy processing module;

The motor casing is a bottled structure with ports ranging from small to large, the filter screen is arranged on the large-diameter port of the motor casing, and the bracket is fixed in the motor casing;

The magnet group is pasted and fixed on the symmetrical two ends of the air bag according to the same polarity, the air bag is connected to the small-diameter port of the motor casing through a hose, and the motor is arranged inside the motor casing and fixed on the bracket The impeller is installed on the shaft of the motor, and the output port of the motor is connected to the input port of the energy processing module through a wire. , and a regulated output through the USB port.

Further, the material of the air bag is rubber.

Further, the impeller is a bidirectional symmetrical impeller, and its material is carbon fiber.

Further, a convex edge is provided on the outer periphery of the small-diameter port of the motor housing.

Further, the bracket is a hollow cylindrical structure with two terminal posts I mounted on its top, and a port is provided on its side; a hole consistent with the top of the bracket is reserved on the side of the motor casing;

The top of the bracket is tightly connected to the hole of the motor casing through a sealing ring. The output port of the motor is the terminal II, the input port of the energy processing module is the terminal III, and one end of the two terminal I of the bracket passes through a set of terminals inside the bracket. The wire I passes through the side port of the bracket and is correspondingly connected to the terminal II, and the other ends of the two terminal I are correspondingly connected to the terminal of the terminal III through two wires II.

Further, the terminals I, II and III are all copper columns.

Further, the material of the sealing ring is rubber.

Beneficial effect:

(1) When the wearer's feet step on the ground, the present invention utilizes the repulsion of the magnetic field to reduce the impact of the feet and the ground. The impeller of the generator rotates, driving the generator to rotate and generate electricity. When the wearer's feet leave the ground, the repulsion of the magnetic field makes it easier for the wearer to lift his feet, and expands the airbag. The air pressure in the airbag is very low, close to a vacuum state, and the atmospheric pressure will The outside air is then pressed into the casing of the generator, and the impact impeller rotates in reverse, driving the motor shaft to rotate to generate electricity. The gas then flows into the airbag through the hose, and so on. The whole process has smooth transition, low noise, and assists the walking of the wearer, making it easier and more comfortable to walk.

(2) the present invention has adopted the flexible tube structure that air pressure bag adds horizontally to change the vertical kinetic energy that produces when human body foot moves into the horizontal kinetic energy of gas; The flow is converted into the rotation of the impeller, which drives the motor to generate electricity. The airflow is through the alternate action of the wearer's foot pressure and the atmospheric pressure, so that the airflow flows between the airbag and the outside atmosphere, so the pressure on the airbag is very small, and the service life is longer. long.

(3) The main transmission part of the present invention is a larger ellipsoidal airbag, which has a simple structure, low cost of materials used, and easy access to materials. Moreover, the structure of the air bag and the generator is easy to disassemble and assemble, and components of different sizes can be manufactured according to changes in the working environment, thereby improving the applicability of the device.

(4) The restoring part that the present invention adopts is two opposite magnets of the same pole. Compared with the traditional spring, it has a simple structure, is easy to install, has no mechanical wear and fatigue, and has high transmission efficiency. What the magnet of the present invention adopted is coercive A strong magnet with high force will not demagnetize, so the invention has a long service life.

(5) The electric energy output by the motor is not directly connected to the power processing module through the wire, and then connected to the terminal in the bracket of the motor through the wire, and then connected to the power processing module through another wire, thus enhancing the power generation The airtightness of the machine casing increases the energy conversion efficiency of the conversion process from air kinetic energy to impeller kinetic energy, thereby improving the overall energy conversion efficiency.

Description of drawings

Figure 1 is an overall schematic diagram of the power generation shoe device.

Fig. 2 is a schematic diagram of the structural casing of the generator.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and examples.

The present invention provides a human foot mechanical energy generating device, as shown in Figure 1, the device is arranged on the bottom of the shoe, including a magnet group 1, an air pressure bag 2, a motor casing 3, a filter screen 4, a hose 5, and a bracket 6 , motor 7, impeller 8, energy processing module 13;

The motor casing 3 is a bottled structure with ports ranging from small to large, the filter screen 4 is arranged on the large-diameter port of the motor casing 3, and the support 6 is fixed in the motor casing 3;

The magnet group 1 is pasted and fixed on the symmetrical two ends of the air bag 2 in the same polarity relative manner, the air bag 2 is connected to the small-diameter port of the motor casing 3 through a hose 5, and the motor 7 is arranged on the motor casing 3 inside, and fixed on the bracket 6, the impeller 8 is installed on the shaft of the motor 7, the output port of the motor 7 is connected with the input port of the energy processing module 13 through wires, and the energy processing module 13 is provided with a USB port 16 , the energy processing module 13 rectifies and stores the current output by the motor 7 , and outputs it through the USB port 16 with a stable voltage.

The material of the air bag 2 is rubber, and the impeller 8 is a two-way symmetrical impeller made of carbon fiber. The outer periphery of the small-diameter port of the motor casing 3 is provided with a convex edge. Bracket 6 is a hollow cylindrical structure, and its top is equipped with two terminal posts I10, and its side is provided with a port; Described motor housing 3 sides are reserved with the hole consistent with the top of bracket 6; The top of bracket 6 and motor housing 3 The holes are connected tightly through the sealing ring 9, the output port of the motor 7 is the terminal II12, and the input port of the energy processing module 13 is the terminal III14; as shown in Figure 2, one end of the two terminal I10 of the bracket 6 passes through the bracket A group of wires I11 inside 6 pass through the side ports of the bracket 6 and are correspondingly connected to the terminal II12, and the other ends of the two terminal I10 are correspondingly connected to the terminal of the terminal III14 through two wires II15. The terminals I10, II12 and III14 are all copper columns. The material of the sealing ring 9 is rubber.

The invention utilizes the air pressure bag to fully absorb the stepping energy of the human body when walking, and converts the vertical extrusion force of the human foot into the kinetic energy of the gas in the air bag, and the air in the air bag flows into the generator shell under the action of the extrusion force of the human foot , impact the impeller, make the impeller rotate, drive the generator to rotate and generate electricity.

Among them, the air bag 2 has a certain toughness, is located at the sole of the foot, stores air inside, deforms under the pressing force of the foot, discharges the internal air, and converts the pedaling movement of the human foot into kinetic energy of the air. The pedaling movement of the human foot has the characteristics of small displacement and large impulse. It is difficult to directly use the mechanical energy of this movement to generate electricity. This invention adopts the form of an air bag to convert the intermittent and huge foot kinetic energy The kinetic energy of the flowing and easy-to-collect gas has high conversion efficiency, and can fully utilize the energy generated by the trampling of the human body. The air bag 2 can be made of rubber, which has certain elasticity and strength, and is cheap, and the environment of the sole will not be exposed to sunlight and corrosion, and the requirements for corrosion resistance are not high. According to the characteristics of the human body, the air bag 2 can be designed as a relatively flat oblate spheroid, which facilitates the flow of gas under extrusion and improves the power generation efficiency.

Among them, the generator casing 3 mainly functions to protect the internal component structure and seal the gas circuit, and requires strong pressure resistance and sealing performance. Since it is assembled on the sole of the shoe, it needs to be light in weight and cannot conduct electricity outside. Therefore, The outer casing 3 should be made of a non-conductive material with high strength and light weight, and a carbon-plastic pipe can be used.

Wherein, the impeller 8 is a device that converts the kinetic energy of the air into the mechanical energy of rotation. In order to realize two-way power generation, a symmetrical impeller is used, that is, both forward and reverse airflows can make the impeller 8 rotate. The impeller 8 must bear the impact of the airflow, and bear the bending moment or tensile force given to the impeller by the wind force and the weight of the impeller. Therefore, the impeller 8 needs to be light in weight and high in structural strength. For example, carbon fiber materials can be used.

The magnet of magnet group 1 is a recovery element, and the stronger the magnetic force of the magnet, the faster the air bag 2 recovers; at the same time, the magnet area should be relatively large, and the thickness should not be too thick, so that the air bag can be effectively opened. Since the working environment is the sole, there is no requirement for high temperature resistance and corrosion resistance of the magnet, and the change of the force of the magnet is relatively slow without strong impact, so the requirement for its strength is not high, so the NdFe with strong magnetic force is used. A magnet made of boron material.

The power processing module 13 is installed near the toe of the sole, and it includes a rectifier circuit, an energy storage circuit, a voltage stabilizing output circuit, and an output USB interface 16 .

Since the impeller 8 has forward rotation and reverse rotation, the electric energy sent out is alternating current, so a rectifier circuit is needed, and a full-bridge rectifier circuit can be used. Relatively speaking, the electric energy sent by the micro-wind generator of the present invention is relatively small, so in order to improve the energy conversion efficiency, the conduction voltage drop of the diode used in the rectifier circuit must be very small, and a Schottky diode can be used, but the Schottky diode There is a disadvantage that the reverse breakdown voltage is small, but the reverse voltage is very small under the working environment of the present invention, so a Schottky diode can be used.

Because the foot squeezes the air bag intermittently when a person is walking, and the frequency is determined by the walking speed of the human body, so the energy generated by the mechanical energy generation of the foot is intermittent and greatly affected by the movement of the human body. Therefore, it is necessary to store the tiny energy converted by each step on the foot, and it has practical value only when it is stored to a certain amount. In the present invention, a supercapacitor is selected as the storage unit. The supercapacitor has a long cycle life and basically does not need to be replaced; the charging speed is fast; the energy conversion efficiency is high; the power density is high, which is conducive to miniaturization design; no special charge and discharge control circuit is required, and overcharge and overdischarge will not have a negative impact on it. The circuit processing module is simple, small in size and high in efficiency. The most important thing is no pollution.

The boost circuit adopts BOOST circuit structure, and also uses Schottky diodes as switches, and the voltage stabilizing circuit can use a 5V voltage stabilizing chip. Finally, connect the USB output interface to an external 5V load.

The working principle and implementation of the mechanical energy power generation in the human foot environment of the present invention are as follows:

When the human body walks, the foot falls to the ground, the foot presses the magnet group 1, overcomes the repulsive force of the magnet and squeezes the air bag 2 of the foot, and most of the air flows along the hose 5 and enters the motor casing 3 through the inlet of the motor casing , and impact the impeller 8 of the generator forward, so that the impeller 8 rotates and drives the motor 7 to rotate, thereby sending out electric energy, and the air flow flows into the outside world through the filter screen 4. When the foot is off the ground, the pressure applied to the magnet group 1 is removed, and the repulsive force of the magnet group 1 will stretch the airbag 2. At this time, the air pressure in the airbag 2 is very low and close to vacuum, and the atmospheric pressure will press the gas from the outside through the filter 4. In the generator casing 3, the air flow hits the impeller 8 backwards, causing the impeller 8 to rotate in the opposite direction, and drives the motor shaft to rotate to generate electric energy. This cycle reciprocates, thereby generating electricity in a cycle.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. a human body foot mechanical energy generating device, which device is arranged on the bottom of shoes, is characterized in that, the device comprises magnet group (1), air pressure bag (2), motor housing (3), filter screen (4), Hose (5), bracket (6), motor (7), impeller (8) and energy processing module (13); The motor casing (3) is a bottled structure with ports ranging from small to large, the filter screen (4) is arranged on the large-diameter port of the motor casing (3), and the support (6) is fixed in the motor casing (3); The magnet group (1) is pasted and fixed on the symmetrical two ends of the air bag (2) according to the opposite manner of the same pole, and the small diameter port of the air bag (2) and the motor casing (3) is connected by a flexible pipe (5). Described motor (7) is arranged on the inside of described motor housing (3), and is fixed on the support (6), and impeller (8) is installed on the shaft of motor (7), and the output port of described motor (7) and The input ports of the energy processing module (13) are correspondingly connected by wires, and the energy processing module (13) is provided with a USB port (16), and the energy processing module (13) stores the current output by the motor (7) after rectification, and Regulated voltage output through USB(16) port. 2. A kind of human body foot mechanical energy generating device as claimed in claim 1, characterized in that, the material of the air bag (2) is rubber. 3. A kind of human body foot mechanical energy generating device as claimed in claim 1, characterized in that, the impeller (8) is a bidirectional symmetrical impeller, and its material is carbon fiber. 4. A human foot mechanical energy generating device according to claim 1, characterized in that, the outer periphery of the small-diameter port of the motor casing (3) is provided with a convex edge. 5. a kind of human body foot mechanical energy generating device as claimed in claim 1, is characterized in that, described support (6) is a hollow cylindrical structure, and its top is equipped with two terminals I (10), and its side is provided with a port; the side of the motor casing (3) is reserved with a hole consistent with the top of the bracket (6); The top of the bracket (6) is tightly connected to the hole of the motor casing (3) through a sealing ring (9), the output port of the motor (7) is the terminal II (12), and the input port of the energy processing module (13) is the wiring Column III (14), one end of the two terminals I (10) of the bracket (6) passes through a group of wires I (11) inside the bracket (6) to pass through the side port of the bracket (6) and the terminal II (12) Correspondingly connected, the other ends of the two terminal posts I (10) are correspondingly connected with the terminal posts of the terminal post III (14) through two wires II (15). 6. A kind of human body foot mechanical energy generating device as claimed in claim 5, characterized in that, said terminal posts I (10), II (12) and III (14) all adopt copper posts. 7. A human body foot mechanical energy generating device according to claim 5, characterized in that the material of the sealing ring (9) is rubber.