Device of cushioning insole with electric storage function based on magnetic damping

Abstract

The present invention discloses a device of a buffer insole with power storage function based on magnetic damping. The insole includes three layers from top to bottom, namely, an upper layer, a middle layer and a lower layer. The upper layer is made of soft and comfortable material, the middle layer is made of rubber magnetic sheet, and the lower layer is made of elastic breathable material. A metal foil with an annular opening is embedded in a circle around the bottom of the sole body, and both ends of the opening of the metal foil are connected to a lithium battery. The sole body is divided into an inner and outer layer along a circle around the bottom, and a circle of soft metal strips / sheets are enclosed and embedded between the inner and outer layers as metal foil. The present invention can hinder the vibration of the insole, achieve the purpose of buffering and shock absorption, collect a small amount of induced current for storage and charging, have a long service life, and a stable shock absorption effect.

Description

Technical Field

[0001] The invention relates to a shock-absorbing, buffering and power-storage insole structure, and in particular to a buffering insole device with power-storage function based on magnetic damping. Background Art

[0002] When people run and jump, their feet will generate a strong impact force on the ground, and they will regain the power for running and jumping through the reaction force. In this process, this impact force will have a huge impact on the knees and feet. The heavier the weight, the faster the running speed and the higher the jumping amplitude, the greater the impact force. Over time, it will cause wear and tear on the knees, damage the bones of the feet, and cause deformation of the soles of the feet. This damage to the human body is irreversible.

[0003] There is now shoe sole air cushion technology on the market to reduce this impact, but because different materials have a great impact on the performance and quality of the air cushion, the outside of the shoe is generally easily worn, and the air cushion sole uses internal inflation. Once it leaks, it is extremely difficult to repair. The service life of air cushions on the market is usually as long as two to three years, and as short as one or two months. It is often the case that the air cushion is damaged but is still in use, and it loses its protective effect.

[0004] Moreover, there is a lack of such devices on the market that can convert the lost kinetic energy into storable energy. The energy is ultimately converted into heat energy emissions. If a similar energy conversion invention can be proposed, the energy utilization rate can be improved and the goal of energy conservation and emission reduction can be achieved. Summary of the invention

[0005] In order to solve the problems existing in the background technology, the main technical problem solved by the present invention is to provide a device of a cushioning insole with a power storage function based on magnetic damping, which uses the insole and the sole to form a magnetic damping circuit loop to reduce the vibration and impact generated by movement.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The present invention comprises an insole, a lithium battery and a sole body. The insole is inside the sole body and comprises three layers from top to bottom, namely, an upper layer, a middle layer and a lower layer. The upper layer is made of soft and comfortable material, the middle layer is made of rubber magnetic sheet, and the lower layer is made of elastic and breathable material. A metal foil with an annular opening is embedded in a circle around the bottom of the sole body, and both ends of the opening of the metal foil are connected to the lithium battery.

[0008] The sole body is divided into two layers, inner and outer layers, along a circle around the bottom, and a circle of soft metal strips / sheets is enclosed and embedded between the inner and outer layers as metal foil.

[0009] The lower layer includes a silicone layer and a breathable non-slip fabric layer located above and below respectively. The silicone layer is located between the middle layer of the rubber magnetic sheet and the breathable non-slip fabric layer. The thickness of the silicone layer and the breathable non-slip fabric layer are 8-10mm and 5mm respectively.

[0010] The upper layer is made of EVA plastic with a thickness of 5 to 8 mm; the thickness of the middle layer is 10 mm.

[0011] The metal foil is aluminum foil. The foil embedded in the inner layer is not limited to aluminum foil, but can also be other light metal foils.

[0012] The lithium battery is placed inside the heel of the sole body.

[0013] The two opening ends of the metal foil are connected to the lithium battery via a conversion circuit.

[0014] When the human footsteps fall, the insole of the present invention is stressed, and the magnetic field mainly composed of the rubber magnetic sheet cuts the metal foil, forming an electromagnetic damping induction, forming an induced current on the metal foil, and hindering the vibration of the insole, thereby achieving the purpose of buffering and shock absorption. In addition, since the metal foil and the rubber magnetic sheet are not in direct contact, there is no sliding friction, the service life is long, and the shock absorption effect is stable. By collecting a small amount of induced current on the metal foil and storing it in the small lithium battery, it is calculated that the amount of electricity that can be charged by human walking every day is about 0.011 kWh, which can be used to charge small household appliances.

[0015] The beneficial effects of the present invention are:

[0016] The present invention can be mainly applied to the design of insoles. By using the magnetic damping design of the sole, the cushioning of the sole can be reduced, so as to protect the knee and the sole bones. In addition, since the main components of the magnetic damping, the rubber magnetic sheet and the metal foil, do not have direct contact and wear, the damage rate is extremely low. Unlike the existing cushioning air cushion insoles on the market, the present invention can achieve the purpose of cushioning for a long time.

[0017] In addition, the present invention converts the buffering work into electrical energy for storage by effectively recovering the magnetic damping resistance, thereby realizing the conversion of kinetic energy into electrical energy, allowing users to make full use of these energy losses, which is green, environmentally friendly, low-carbon and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an exploded view of the insole structure of the present invention;

[0019] Figure 2 It is a physical principle diagram of the present invention;

[0020] Figure 3 This is a diagram of the force on the foot when a normal insole is squeezed;

[0021] Figure 4It is a diagram of the force on the foot when the insole of the present invention is squeezed;

[0022] Figure 5 It is a circuit principle diagram of the insole of the present invention.

[0023] In the figure: EVA plastic material 1, thin rubber magnetic sheet 2, silicone material 3, breathable and non-slip fabric 4, aluminum foil 5, magnetic field 6, circular current 7, feedback force 8, and damping force 9. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1 As shown, the insole is divided into four layers, the top layer is EVA plastic material 1, the second layer is a thin rubber magnetic sheet 2, the third layer is a silicone layer 3 of silicone material, and the bottom layer is a breathable and non-slip fabric layer 4. A circle of soft aluminum foil 5 is added around the sole. The thickness of the silicone layer and the breathable and non-slip fabric layer are 8-10mm and 5mm respectively. EVA plastic, thickness 5-8mm; the thickness of the middle layer is 10mm.

[0026] A lithium battery is installed inside the heel of the sole body. The lithium battery is charged by the current generated daily by the thin rubber magnetic sheet. After charging, the lithium battery can be taken out and a USB interface is reserved for charging other small household appliances.

[0027] Specifically, the sole body is divided into an inner and outer layer along a circle around the bottom, and a circle of soft metal strip / sheet is enclosed and embedded between the inner and outer layers as a metal foil. The upper edge of the metal foil does not touch the upper edge of the sole, and the lower edge of the metal foil does not touch the lower edge of the sole. The outer layer can be waterproof rubber, and the inner layer can be rubber material.

[0028] The open ends of the metal foil are connected to the lithium battery via a conversion circuit.

[0029] Conversion circuit such as Figure 5As shown, it includes a resistor R1, a resistor R2, a resistor R3, a diode rectifier VD1~VD4, a capacitor C1, a capacitor C2, a capacitor C3, a diode regulator ZD, an input AC power supply AC and a battery pack E; the resistor R2 and the resistor R3 are connected in series and then connected in parallel to the two ends of the diode regulator ZD, the capacitor C2 and the capacitor C3 are both connected in parallel to the two ends of the diode regulator ZD, two ends of the diode rectifier VD1~VD4 are connected to the two ends of the aluminum foil 5, and a fuse FU and a parallel capacitor C1 and a resistor R1 are arranged on the series circuit between one end of the aluminum foil 5 and the diode rectifier, the other two ends of the diode rectifier VD1~VD4 are connected in parallel to the two ends of the diode regulator ZD, the two ends of the diode regulator ZD are respectively connected to the battery pack E of the lithium battery, and the middle of the diode regulator ZD is connected between the resistor R2 and the resistor R3. The working principle is as follows: After the magnetic damping AC voltage is stepped down by capacitor C1, rectified by diodes VD1~VD4, and filtered by capacitor C2, when the voltage is low, ZD is turned off and all the current is charged into battery E. When the battery voltage is too high, ZD starts to conduct and play a shunt role to protect battery E.

[0030] When the sole is under pressure, the rubber magnetic sheet 2 in the insole moves downward, and the silicone layer in the lower layer of the insole is squeezed downward. During the downward movement of the entire rubber magnetic sheet 2, it makes a cutting movement relative to the cross-section of the aluminum foil in the sole fixing belt, thereby forming a magnetic damping induction circuit, which hinders the damping force generated by the downward movement of the rubber magnetic sheet 2 in the insole. At the same time, the silicone layer has a restoring force to return to its original shape after being squeezed. Under the action of the two materials, it plays a role in shock absorption and buffering.

[0031] When the entire rubber magnetic sheet 2 moves relative to the aluminum foil, the annular aluminum foil actually cuts the magnetic field generated by the rubber magnetic sheet 2, forming a magnetic damping circuit, generating an induced current in the aluminum foil, which is transmitted to the lithium battery at the heel position of the sole body to complete the charging. When a person steps on the sole, the insole is compressed and rebounds to move back and forth, thereby driving the rubber magnetic sheet 2 to cut the magnetic field back and forth, achieving uninterrupted generation of induced current to charge the lithium battery. When the lithium battery is needed, the lithium battery can be removed and the small household appliances can be charged through the USB interface on the battery.

[0032] like Figure 2 As shown, the physical principle process of the present invention is as follows:

[0033] When a person's foot falls, the insole is forced to move downward, and the thin rubber magnetic sheet 2 located on the upper layer of the insole moves downward relative to the soft aluminum foil on the sole. The aluminum foil 5 is affected by the magnetic field B18 generated by the thin rubber magnetic sheet and cuts the magnetic field, thereby generating a circular current I9 in the aluminum foil. The magnetic field B2 generated by the current I will hinder the movement of the thin rubber magnetic sheet, thereby forming electromagnetic damping induction, and the induction force hinders the vibration of the thin rubber magnetic sheet.

[0034] Figure 3 , Figure 4 The figures are respectively the force diagrams of the foot when being squeezed without the insole of the present invention and with the insole of the present invention. Without the insole of the present invention, the foot only receives the feedback force F10 of the sole, while with the insole of the present invention, there is not only the feedback force F10 of the sole but also the magnetic damping force f11, thereby achieving the purpose of buffering and shock reduction.

[0035] According to the magnetic damping force formula In the formula K is the magnetic damping coefficient, L0 is the straight line projection length of the cutting magnetic induction line, B0 is the magnetic field strength of the rubber magnetic sheet, R and r are the internal resistance and external resistance of the magnetic damping circuit loop composed of the rubber magnetic sheet and the aluminum foil, v represents the relative movement speed of the aluminum foil relative to the rubber magnetic sheet, and I represents the circular current generated by the aluminum foil.

[0036] According to the design of the insole, the straight line projection length L0 of the cutting magnetic induction line is taken as the length of the rubber magnetic sheet as 0.2 meters; the magnetic field strength B0 of the rubber magnetic sheet is generally 500-1000 Gauss, and 1000 Gauss is selected here. R+r is the internal and external resistance of the loop, and the smaller resistance is 200 ohms.

[0037] According to the above formula, the value of K is set to 200N·s / m. When a human body is airborne, based on an average bounce of 0.5 meters, the speed when it descends to the ground is about 3.2m / s. Therefore, each jump can generate a buffering force of 640N, which can greatly reduce the pressure on the foot bones and knees. The buffering resistance can be adjusted by adjusting the resistance value in the circuit.

[0038] According to the design of lithium batteries, when a person walks, jogs, or jumps, the work done by the magnetic damping buffering force will be converted into electrical energy. The magnetic damping resistance when walking is about 200N (lower than 640N when bouncing). The rubber magnetic sheet produces a relative displacement of 1cm up and down, which can generate 2 joules of energy. According to the average person's daily exercise volume of 10,000 steps, a total of 20,000 joules of energy can be generated in a day. The feet can generate 40,000 joules of energy, which is about 0.011 kWh of electricity, which can be used to charge small household appliances (such as charging an iPhonex to about 80%).

[0039] It can be seen that the technical solution of the present invention has good feasibility. It can not only effectively recover the magnetic damping resistance, but also convert the buffering work into electrical energy for storage, and has outstanding and significant technical effects.

[0040] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device of a cushioning insole with power storage function based on magnetic damping, comprising an insole, a lithium battery and a sole body, characterized in that: The insole comprises three layers from top to bottom: an upper layer, a middle layer and a lower layer, the upper layer is made of soft and comfortable material, the middle layer is made of a rubber magnetic sheet (2), and the lower layer is made of an elastic breathable material; a metal foil with an annular opening is embedded in a circle around the bottom of the sole body, and both ends of the opening of the metal foil are connected to the lithium battery; The sole body is divided into two layers, inner and outer, along a circle around the bottom, and a circle of soft metal sheet is enclosed and embedded between the inner and outer layers as metal foil; The lower layer includes a silicone layer and a breathable non-slip fabric layer located on the upper and lower sides respectively, the silicone layer is located between the middle layer of the rubber magnetic sheet and the breathable non-slip fabric layer, and the thickness of the silicone layer and the breathable non-slip fabric layer are 8-10 mm and 5 mm respectively; The upper layer is made of EVA plastic with a thickness of 5-8 mm; the thickness of the middle layer is 10 mm.

2. The device of a magnetic damping-based cushioning insole with power storage function according to claim 1, characterized in that: The metal foil is aluminum foil.

3. The device of a magnetic damping-based cushioning insole with power storage function according to claim 1, characterized in that: The lithium battery is placed inside the heel of the sole body.

4. The device of a magnetic damping-based cushioning insole with power storage function according to claim 1, characterized in that: The two opening ends of the metal foil are connected to the lithium battery via a conversion circuit.

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