Self-driven foot massage flexible insole

Abstract

The present application relates to a kind of self-driving foot massage flexible insole.The insole is divided into four layers from top to bottom.The surface layer adopts fluorosilicone resin, and in the middle of the surface layer, there are pyramid-shaped protrusions corresponding to the acupoints of the sole, and micro-needle electrodes are distributed according to the position of the acupoints of the human foot at the edge of the groove channel.A silver metal film is used as a hollow electrode layer.The electrode layer is connected to a ring oscillator circuit inside the heightening layer through a hollow support layer, and the material of the support layer is silicone rubber.The outside of the heightening pad is a styrene-polybutadiene polymer elastomer, and a ring oscillator is installed inside it.Based on triboelectricity and electrostatic induction, the electrode layer collects electric charges and conducts them to the ring oscillator installed inside the heightening layer.The ring oscillator converts low-frequency mechanical stimulation into high-frequency stimulation.The high-frequency electric stimulation processed by the ring oscillator is connected to individual micro-wire electrodes on the surface layer through wires passing through the porous plastic of the surface layer.The foot is stimulated by the high-frequency electricity of the micro-wire electrodes to achieve a therapeutic effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of flexible electronic devices, and particularly relates to a self-driven foot massage flexible insole. BACKGROUND

[0002] With the increasing improvement of people's living standards, people pay more and more attention to health, and put forward higher requirements for medical care instruments. Since foot physiotherapy plays an important role in prolonging life, in recent years, foot physiotherapy instruments have also emerged in an endless stream.

[0003] However, the commercially available foot physiotherapy instruments are large in size, inconvenient to carry, cannot be physiotherapied at any time and any place, and are expensive and high in power consumption. These shortcomings limit their wider use. In order to overcome the above-mentioned shortcomings and make the physiotherapy instrument more widely used, the present application provides a self-driven flexible foot physiotherapy insole, which belongs to a kind of foot physiotherapy instrument. The insole is light in quality and can be used for physiotherapy at any time and any place.

[0004] The self-driven implementation of the present application is realized through a friction generator. In 2012, Academician Wang Zhonglin led a team to invent a friction generator (TENG). Based on the coupling effect of triboelectricity and electrostatic induction, TENG can convert mechanical energy into electrical energy. In recent years, not only high voltage and high power density have been achieved, but also the limitation of traditional piezoelectric, magneto-electric and thermal generators on materials has been broken due to the triboelectricity of any material, becoming a new high-efficiency energy conversion means and contributing to the energy problem. At present, self-powered sensors based on friction nanogenerators have been widely studied in various disciplines and fields, and are used for measuring various types of physical parameters, sensors, human-computer interaction, robots, etc. After years of development, high sensitivity, high resolution and device integration have been achieved. Recently, TENG has also been used in wearable devices for the human body, and electric stimulation is used to treat diseases. For example, Wang Xudong et al. invented a self-powered device that collects energy from the daily movement of the human body, stimulates the skin through soft low-frequency electric pulses, and thus induces dormant hair follicles to reactivate and grow hair. Since the device does not require a battery and does not have complex electronic equipment, it can be easily hidden by wearing a hat. Moreover, since the electric pulse is very mild and the penetration depth does not exceed the outermost layer of the scalp, the device will not cause any adverse side effects. This work provides a practical basis for the use of friction generators in biological cell stimulation to cause changes in hormone secretion. And it provides valuable reference for further innovation of medical technology.

[0005] There are also reports that friction generators are used for shoe sole power generation. Yang Ya et al. use friction power generation in insoles to collect the energy of human walking. However, there is no report on the use of friction power generation in insoles for acupoint physiotherapy.

[0006] The friction between the foot (sock) and the insole during walking is used to collect the energy of human walking, and if used for acupoint stimulation, a certain frequency is required. Therefore, the present application combines a ring oscillator. The low-frequency mechanical stimulation is converted into high-frequency stimulation to achieve the therapeutic effect of stimulating acupoints.

[0007] Since electron beam exposure is not required in the processing of the insole, the processing technology is greatly simplified. Compared with perovskite, graphene is inexpensive, reducing costs. The high mechanical strength, stable chemical properties, flexibility and light weight of graphene make the optical detector flexible, stable and durable, and conformable, which has great potential in precision electronics, intelligent devices and other aspects. SUMMARY

[0008] The technical problems to be solved by the present application are as follows:

[0009] 1. Solve the problem of large size, inconvenience to carry, not anytime and anywhere physiotherapy and expensive of the physiotherapy instrument on the market. The flexible foot bottom physiotherapy instrument is attached to the human body, light in quality, and can walk with the human body, anytime and anywhere to play a physiotherapy role.

[0010] 2. Solve the problem of large power consumption of the physiotherapy instrument on the market, which aggravates the energy problem. This paper uses the contact electrification and electrostatic coupling mechanism of triboelectricity to collect the energy of human motion and convert it into electrical energy, realizing self-driving.

[0011] 3. Solve the problem that the frequency of the physiotherapy instrument on the market does not match the optimal acupoint stimulation frequency and does not achieve the best therapeutic effect. The ring oscillator converts the low-frequency motion of the human body into high-frequency motion.

[0012] To solve the above technical problems, the application provides a self-driven foot massage flexible physiotherapy shoe pad. The shoe pad is divided into four layers from top to bottom: a surface layer, an electrode layer, a support body layer and a heightening layer. The surface layer is made of 0.5-1 mm fluorine-containing thin layer plastic, and the porous structure is beneficial to human perspiration. In order to avoid short circuit caused by human sweat, the height of the periphery of the surface layer is higher than that of the bottom of the surface layer, and the bottom of the surface layer has a groove channel, and the inside of the groove channel is filled with hydrophilic fibers, so that the sweat cannot touch the electrode. In the middle of the surface layer, there are 34 pyramid-shaped protrusions corresponding to 34 acupoints of the sole, and 34 microneedle electrodes are distributed on the edge of the groove channel according to the position of the acupoints of the human foot, each with a diameter of 0.5 um and a length of 1 mm. The high-frequency electricity of the micro-wire electrode stimulates the foot. The silver metal film with a thickness of 200 nm is used as the hollow electrode layer. The electrode layer is connected with the ring oscillator circuit in the heightening layer through the hollow support body layer, and the material of the support body layer is silicone rubber. The heightening layer is made of styrene-polybutadiene elastomer, and the ring oscillator is arranged in the heightening layer. The shell of the heightening layer protects the ring oscillator well, so that the ring oscillator is not extruded under the action of human body gravity. Based on triboelectricity and electrostatic induction, the triboelectricity generated when the foot and the shoe pad are in contact and separated during walking is collected by the electrode layer on the back of the surface layer of the shoe pad body, and is conducted to the ring oscillator arranged in the heightening layer. The ring oscillator converts the low-frequency mechanical stimulation into high-frequency stimulation to achieve the effect of stimulating acupoints. The high-frequency electric stimulation processed by the ring oscillator is connected to the micro-wire electrodes on the surface layer through the porous plastic of the surface layer. The high-frequency electricity of the micro-wire electrode stimulates the foot to achieve the massage effect.

[0013] The surface layer (a thin layer of porous plastic containing fluorine) of the shoe pad body can be 3D printed. The micro-wire electrode lead-out position is designed according to the position of the acupoints of the human body, and a model is established. Considering the perspiration of the human foot, a groove channel is designed at the bottom of the surface layer, and the inside is filled with hydrophilic fibers to absorb human sweat in time and protect the circuit. The model is drawn in the drawing software of 3D printing, and the 3D printer is used for printing.

[0014] The electrode layer attached to the back of the surface layer of the shoe pad body and the amplifier are connected as shown in Figure 3 The electrode layer attached to the back of the surface layer of the shoe pad body and the amplifier are connected as shown in

[0015] The surface layer of the shoe pad body is attached to the back of the surface layer of the shoe pad body, and the electrode layer is attached to the back of the surface layer of the shoe pad body.

[0016] The ring oscillator on the circuit board is composed of 7 inverter logic devices, encapsulated with a styrene-polybutadiene polymer elastomer, and forms a raised layer.

[0017] The friction generator is divided into contact separation type, sliding type, single electrode type and the like according to the structure. The flexible physiotherapy insole of the present application adopts the single electrode type. When the cotton socks (silk socks) with positive friction electrode contact the surface layer of the insole, because the friction electrode sequences of the two are different, the surface layers have positive and negative charges respectively. Because of charge balance, no charge movement occurs between the cotton socks (silk socks) and the surface layer of the insole, and no current flows. When a person walks, the cotton socks (silk socks) with positive friction electrode separate from the surface layer of the insole. In order to balance the negative charge of the surface layer, the positive charge of the hollow electrode layer attached to the back of the surface layer of the insole body moves to the surface, and the remaining negative charge of the electrode layer generates electron movement and potential difference. The electrode layer attached to the back of the surface layer of the insole body collects the charge and conducts to the ring oscillator inside the raised layer. The ring oscillator converts the low-frequency mechanical stimulation into high-frequency stimulation, achieving the effect of stimulating the acupoints.

[0018] The innovation of the present application is as follows:

[0019] 1. There is no report on the self-driven type of foot acupoint physiotherapy insole.

[0020] 2. The surface layer adopts a thin layer of porous plastic containing fluorine. The porous structure is beneficial to human perspiration. In order to avoid short circuit caused by human sweat, the surface layer is slightly arched around, and there are recessed channels, so that the sweat will not touch the electrode.

[0021] 3. The ring oscillator converts the low-frequency stimulation of human body movement into high-frequency electrical stimulation, which matches the frequency of foot acupoint stimulation, and realizes the best effect.

[0022] 4. The physiotherapy insole of the present application adopts materials with stable chemical properties, strong flexibility, light weight, softness, air permeability, comfort and deformation resistance. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the self-driven foot massage flexible physiotherapy insole.

[0024] Figure 2 It is a principle diagram of the self-driven foot massage flexible physiotherapy insole.

[0025] Figure 3 It is a circuit diagram of the electrode layer of the self-driven foot massage flexible physiotherapy insole.

[0026] Figure 4 It is a schematic diagram of the ring oscillator in the raised layer of the self-driven foot massage flexible physiotherapy insole. DETAILED DESCRIPTION

[0027] 1. The surface layer of the insole body is printed by 3D printing method. According to the position of human body acupoints, 34 micro-wire electrodes with a diameter of 0.5 um and a length of 1 mm are designed, and the bottom of the surface layer is designed with a groove channel filled with hydrophilic fibers to absorb human sweat in time.

[0028] 2. The electrode layer attached to the back of the surface layer of the insole body is transferred to VHB stamp by screen printing (realizing the designed pattern) and attached to the back of the surface layer of the insole body by transfer printing technology.

[0029] Each acupoint on the insole corresponds to an elongated micro-wire electrode, and each micro-wire electrode is connected to the micro-wire electrode of the adjacent acupoint. The last micro-wire electrode is connected to an amplifier. The circuit diagram is shown in Figure 3 .

[0030] 3. The surface layer of the insole body is attached to the light and soft silicone rubber support body together with the electrode layer attached to the back of the surface layer of the insole body to form the insole body.

[0031] 4. The ring oscillator on the circuit board is connected to the amplifier of the electrode layer, which is composed of 7 long and wide 1mm*1mm and 200nm long and wide 1mm*1mm inverters made of electrodes and semiconductor indium gallium zinc oxide (Indium Gallium Zinc Oxide) by series connection. The last one is grounded. The heightening layer is packaged with styrene-polybutadiene elastomer. The ring oscillator is shown in Figure 4 .

[0032] When the insole is added to the shoe, when the cotton socks (silk socks) as the friction electrode with positive polarity contact the surface layer of the insole, because the friction electrode sequences of the two are different, the surfaces are respectively charged positively and negatively. Because of the charge balance, there is no charge movement and no current between the cotton socks (silk socks) and the surface layer of the insole. When a person walks, the cotton socks (silk socks) with positive friction electrode are separated from the surface layer of the insole. In order to balance the negative charge of the surface layer, the positive charge of the hollow electrode attached to the back of the surface layer of the insole body moves to the surface, and the remaining negative charge of the electrode generates electron movement and potential difference. The electrode attached to the back of the surface layer of the insole body collects the charge and conducts it to the ring oscillator inside the heightening layer. The ring oscillator converts low-frequency mechanical stimulation into high-frequency stimulation to achieve the effect of stimulating acupoints.

Claims

1. A self-powered foot-massage flexible insole, characterized in that, The self-driven foot massage flexible insole is divided into four layers from top to bottom: a surface layer, an electrode layer, a support layer and a heightening layer. The surface layer is made of fluorosilicon resin; in the middle of the surface layer, there are a plurality of pyramid-shaped protrusions corresponding to the foot acupoints, and micro-needle electrodes are distributed on the edge of the groove channel according to the position of the human foot acupoints; the foot is stimulated by high-frequency electricity of the micro-wire electrode; the electrode layer is connected with the ring oscillator circuit in the heightening layer through the hollow support layer; Based on triboelectricity and electrostatic induction, the triboelectricity generated when the foot and the insole are separated during walking is collected by the electrode layer on the back of the surface layer and transmitted to the ring oscillator in the heightening layer; The ring oscillator converts the low-frequency mechanical stimulation into high-frequency stimulation to achieve the effect of stimulating acupoints; the high-frequency electric stimulation processed by the ring oscillator is connected to the micro-wire electrode of the surface layer through the wire, and the foot is stimulated by high-frequency electricity of the micro-wire electrode to achieve the massage effect.

2. A self-powered foot massage flexible insole as claimed in claim 1, wherein, The surface layer has a thickness of 0.5-1mm and a porous structure; the height of the surface layer around is higher than that of the bottom of the surface layer, and the bottom of the surface layer has a groove channel filled with hydrophilic fibers so that sweat cannot adhere to the electrode.

3. The self-powered foot massage flexible insole of claim 1, wherein, The number of pyramid-shaped protrusions is 34, and the number of micro-needle electrodes is also 34, each with a diameter of 0.5um and a length of 1mm.

4. The self-powered foot massage flexible insole of claim 1, wherein, The electrode layer is a 200nm silver metal film, and the electrode layer is hollow.

5. The self-powered foot massage flexible insole of claim 1, wherein, The support layer is made of silicone rubber, and the heightening layer is made of styrene-polybutadiene elastomer.

6. The self-powered foot massage flexible insole of claim 1, wherein, Each acupoint on the insole corresponds to an elongated micro-wire electrode, each micro-wire electrode is connected with the micro-wire electrode of the adjacent acupoint, and the last micro-wire electrode is connected to an amplifier; the ring oscillator is connected with the amplifier of the electrode layer.

7. The self-powered foot massage flexible insole of claim 1, wherein, The ring oscillator is composed of 7 inverters with a size of 1mm*1mm and a thickness of 200nm, which are connected in series and connected to the ground.

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