Electronic circuit DIY writing pen and DIY kit

Abstract

The present invention provides an electronic circuit DIY writing pen and a DIY kit, and relates to the technical field of electronic circuits. The electronic circuit DIY writing pen provided by the present invention includes: an internally threaded hard pen tube; an externally threaded column, the externally threaded column is threadedly connected to the internally threaded hard pen tube; a rotating knob, the rotating knob is fixedly connected to the top of the externally threaded column; a hose, the hose is filled with liquid metal, the top of the hose is sealed and connected to the bottom of the internally threaded hard pen tube; a sealing plug, the sealing plug is located in the hose, the top of the sealing plug is against the bottom of the externally threaded column, and an air pressure chamber is formed between the bottom of the sealing plug and the liquid metal surface; a refill connection seat, the refill connection seat is sealed and connected to the bottom of the hose; and the refill is fixed on the refill connection seat. The technical solution of the present invention can simply manufacture electronic circuits, has low manufacturing costs, and helps meet users' personalized needs for electronic circuits.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic circuits, and in particular to an electronic circuit DIY writing pen and a DIY kit. Background Art

[0002] There are DIY writing pens such as fountain pens, ballpoint pens, brushes, and colored pens on the market, which can all be used to draw any circuit graphics. However, the circuit graphics drawn by them are only design graphics and are only for reference in the actual application of electronic circuits. To ultimately realize the functions and performance of electronic circuits, PCB board making, PCB welding, component assembly and other production processes are still needed to realize the functions and performance of the circuit.

[0003] In addition, in the process of realizing the functions and performance of electronic circuits, PCB board manufacturing requires cumbersome production processes such as cutting, drilling, copper plating, circuit outline, graphic electroplating, etching, center testing, and solder mask. The production and processing cycle before realizing its functions is long, the production cost is high, and it cannot meet the user's personalized needs for electronic circuits. Summary of the invention

[0004] The invention provides an electronic circuit DIY writing pen and a DIY kit, which can simply manufacture electronic circuits with low manufacturing cost and help meet users' personalized needs for electronic circuits.

[0005] In a first aspect, the present invention provides an electronic circuit DIY writing pen, which adopts the following technical solution:

[0006] The electronic circuit DIY writing pen comprises:

[0007] Internal thread pen tube;

[0008] An external threaded column, the external threaded column being threadedly connected in the internal threaded hard pen tube;

[0009] A rotating knob, the rotating knob being fixedly connected to the top of the external threaded column;

[0010] A hose, wherein the hose is filled with liquid metal, and the top of the hose is sealed and connected to the bottom of the internally threaded hard pen tube;

[0011] A sealing plug, wherein the sealing plug is located in the hose, the top of the sealing plug is against the bottom of the external threaded column, and a pressure chamber is formed between the bottom of the sealing plug and the liquid metal surface;

[0012] A refill connection seat, the refill connection seat being sealingly connected to the bottom of the hose;

[0013] The pen core is fixed on the pen core connecting seat.

[0014] Optionally, the pen core is a fiber pen core, and the material of the fiber pen core is pig bristle, nylon or squirrel hair.

[0015] Optionally, the pen core includes an ink outlet head and a fiber brush, and along the writing direction, the fiber brush and the ink outlet head are arranged in sequence.

[0016] Optionally, the ink outlet head includes a stainless steel tank and an ink outlet located at the bottom of the stainless steel tank; the fiber brush is made of pig bristles, nylon or squirrel hair.

[0017] Optionally, in a direction perpendicular to the forward direction of writing, a dimension d1 of the fiber brush and a maximum dimension d2 of the ink outlet in this direction satisfy 2.5 mm ≥ d1 - d2 ≥ 1.5 mm; in the height direction of the electronic circuit DIY writing pen, a length 1 by which the free end of the fiber brush exceeds the ink outlet satisfies 3.5 mm ≥ 1 ≥ 2.5 mm.

[0018] Optionally, a cross-shaped groove is provided on the top of the rotating knob.

[0019] Optionally, the rotating knob is made of hard plastic, nylon, plexiglass or stainless steel; the internally threaded hard pen tube is made of hard plastic, nylon, plexiglass or stainless steel; the externally threaded column is made of hard plastic, nylon, plexiglass or stainless steel; the refill connecting seat is made of hard plastic, nylon, plexiglass or stainless steel.

[0020] Optionally, the sealing plug is a rubber sealing plug.

[0021] Optionally, the hose is a rubber hose.

[0022] In a second aspect, the present invention provides a DIY kit for an electronic circuit, wherein the DIY kit for an electronic circuit comprises the DIY writing pen for an electronic circuit as described in any one of the above items.

[0023] The invention provides an electronic circuit DIY writing pen and a DIY kit. The electronic circuit DIY writing pen comprises: an internally threaded hard pen tube; an externally threaded column, which is threadedly connected to the internally threaded hard pen tube; a rotating knob, which is fixedly connected to the top of the externally threaded column; a hose, in which liquid metal is filled, and the top of the hose is sealed and connected to the bottom of the internally threaded hard pen tube; a sealing plug, which is located in the hose, the top of the sealing plug is against the bottom of the externally threaded column, and an air pressure chamber is formed between the bottom of the sealing plug and the liquid metal surface; a refill connecting seat, which is sealed and connected to the bottom of the hose; and a refill, which is fixed on the refill connecting seat. The user holds the electronic circuit DIY writing pen, squeezes the hose to make the liquid metal in the hose reach the pen core, and writes on the substrate to form a liquid metal circuit on the substrate. When the liquid metal cannot be written by squeezing the hose and the pen core, the sealing plug is moved downward by operating the rotary knob to apply pressure to the liquid metal to move the liquid metal level downward, and the hose can be squeezed again to make the pen core write liquid metal normally. Therefore, the technical solution in the embodiment of the present invention can be used to simply manufacture electronic circuits with low manufacturing cost, and it helps to meet the user's personalized needs for electronic circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 Schematic diagram of the structure of the electronic circuit DIY writing pen provided by the embodiment of the present invention Figure 1 ;

[0026] Figure 2 Schematic diagram of the structure of the electronic circuit DIY writing pen provided by the embodiment of the present invention Figure 2 . DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0028] It should be noted that the various technical features in the embodiments of the present invention can be combined with each other without conflict.

[0029] The embodiment of the present invention provides an electronic circuit DIY writing pen, specifically, as Figure 1 and Figure 2 As shown, Figure 1 Schematic diagram of the structure of the electronic circuit DIY writing pen provided by the embodiment of the present invention Figure 1 , Figure 2 Schematic diagram of the structure of the electronic circuit DIY writing pen provided by the embodiment of the present invention Figure 2 , the electronic circuit DIY writing pen includes:

[0030] Internal thread hard pen tube 2;

[0031] An external thread column 3, the external thread column 3 is threadedly connected to the internal thread hard pen tube 2;

[0032] A rotating knob 1 is fixedly connected to the top of the external threaded column 3;

[0033] A hose 5, in which liquid metal 8 is filled, and the top of the hose 5 is sealed and connected to the bottom of the internally threaded hard pen tube 2;

[0034] The sealing plug 4 is located in the hose 5, the top of the sealing plug 4 is against the bottom of the external threaded column 3, and a pressure chamber is formed between the bottom of the sealing plug 4 and the liquid metal 8 surface;

[0035] The refill connection seat 6 is sealed and connected to the bottom of the hose 5;

[0036] The pen core 7 is fixed on the pen core connecting seat 6.

[0037] The electronic circuit DIY writing pen can be assembled in the following manner: assemble the hose 5, the refill connecting seat 6, and the refill 7 to obtain a first component; assemble the sealing plug 4, the external threaded column 3, the internal threaded hard pen tube 2, and the rotating knob 1 to obtain a second component; fill the hose 5 with liquid metal 8; and then assemble the first component and the second component to obtain the electronic circuit DIY writing pen.

[0038] The user holds the electronic circuit DIY writing pen, squeezes the hose 5 so that the liquid metal 8 in the hose 5 reaches the pen core 7, and writes on the substrate to form a liquid metal 8 circuit on the substrate. When the liquid metal 8 cannot be written by squeezing the hose 5 and the pen core 7, the external thread column 3 is moved downward in the internal thread hard tube pen 2 by operating the rotating knob 1, and then the sealing plug 4 is driven to move downward, and pressure is applied to the liquid metal 8, so that the liquid metal 8 liquid level moves down, and the hose 5 is squeezed again to make the pen core 7 write out the liquid metal 8 normally. Therefore, the technical solution in the embodiment of the present invention can be used to simply make electronic circuits, with low production cost, and help meet the personalized needs of users for electronic circuits. In addition, in the embodiment of the present invention, no professional PCB board or professional technicians are required to realize the function of the electronic circuit. In application, the plasticity of liquid metal is used to write on the surface of 3D shape, and electronic circuits with various postures and shapes are drawn to realize the circuit function, and the liveliness and cuteness of animation can also be used to enhance entertainment.

[0039] The electronic circuit DIY writing pen provided by the embodiment of the present invention can be used to write on any flexible substrate, hard substrate or human skin to which liquid metal can be adhered. When the substrate is human skin, the formed electronic circuit is a wearable electronic circuit. The produced electronic circuit can be applied to cultural and creative products, beauty products, personalized devices, teaching aids, monitoring circuits, alarm circuits, etc., which is a boon for electronic enthusiasts, digital DIY enthusiasts, popular science educators, fashion pursuers, electronic R&D personnel, etc.

[0040] The liquid metal mentioned in the embodiment of the present invention is a metal element with a melting point below 300 degrees Celsius, an alloy with a melting point below 300 degrees Celsius, or a conductive mixture with the above metal element and / or alloy as the main component. Preferably, it is a liquid metal with a melting point near room temperature, so that the liquid metal in the electronic circuit DIY writing pen is liquid at room temperature or can be liquid after slightly heating, and the electronic circuit DIY writing pen is easy to use. For example, the liquid metal is a gallium-based liquid metal, such as a gallium-indium eutectic alloy, a gallium element or a gallium-indium-tin eutectic alloy. The liquid metal can also be a mixture of gallium-based liquid metal and one or more of nickel powder, iron powder, iron-nickel powder, and silver-coated copper powder. Preferably, the liquid metal is a mixture of gallium-based liquid metal and iron-nickel powder and silver-coated copper powder.

[0041] When the melting point of the liquid metal in the electronic circuit DIY writing pen is higher than room temperature, the electronic circuit DIY writing pen can be immersed in hot water or heated by other heating methods to melt the liquid metal therein and then use the electronic circuit DIY writing pen. In addition, a heating component can be provided in the electronic circuit DIY writing pen to melt the liquid metal therein and to liquidize it.

[0042] Optionally, a cross-shaped groove is provided on the top of the rotating knob 1 to facilitate the user to operate the rotating knob 1 with hands or tools. Optionally, when the rotating knob 1 is rotated clockwise, the external thread column 3 moves downward in the internal threaded hard pen tube 2, thereby driving the sealing plug 4 to move downward, so as to meet the operating habits of most people. Optionally, when the electronic circuit DIY writing pen is in a new state, the rotating knob 1 and part of the external thread column 3 exceed the top of the internal threaded hard pen tube 2, so that it is easier to rotate the rotating knob 1.

[0043] Optionally, the rotating knob 1 is made of hard plastic, nylon, plexiglass or stainless steel, so that the rotating knob 1 has good structural strength, is not easily corroded by liquid metal, and has good structural stability. The material of the internal threaded hard pen tube 2 is made of hard plastic, nylon, plexiglass or stainless steel, so that the internal threaded hard pen tube 2 has good structural strength, is not easily corroded by liquid metal, and has good structural stability. The material of the external threaded column 3 is made of hard plastic, nylon, plexiglass or stainless steel, so that the external threaded column 3 has good structural strength, is not easily corroded by liquid metal, and has good structural stability. The material of the refill connector 6 is made of hard plastic, nylon, plexiglass or stainless steel, so that the refill connector 6 has good structural strength, is not easily corroded by liquid metal, and has good structural stability.

[0044] Optionally, the sealing plug 4 is a rubber sealing plug, so that the sealing plug 4 can maintain close contact with the hose 5, has a better sealing effect, and is not easily corroded by liquid metal.

[0045] Optionally, the hose 5 is a rubber hose, so that the hose 5 can be easily squeezed and deformed, and is not easily corroded by liquid metal.

[0046] Optionally, a liquid-repellent metal layer is provided on the inner wall of the hose 5. The provision of the liquid-repellent metal layer can effectively ensure that the liquid metal will not adhere to the inner wall of the hose 5, which is beneficial to improving the utilization rate of the liquid metal. The liquid-repellent metal layer in the embodiment of the present invention can be made of one or more of docosane, stearic acid, palmitic acid, arachidic acid, wood wax, palm wax, rice bran wax, jojoba wax, castor wax, bayberry wax, candelilla wax, beeswax, worm wax, wool wax, spermaceti, paraffin, microcrystalline wax, petroleum wax, emulsified wax, lignite wax, Fischer-Tropsch wax, polyethylene wax, polypropylene wax, chlorinated paraffin, ethylene-vinyl acetate copolymer wax, and ethylene oxide wax.

[0047] The structure of the pen core 7 in the embodiment of the present invention can be various, which are described below with examples.

[0048] In an example, Figure 1As shown, the refill 7 is a fiber refill, and the material of the fiber refill is pig bristle, nylon or squirrel hair, so that the refill 7 has a good writing effect and is not easily corroded by liquid metal. Optionally, the longitudinal section of the refill 7 is a right-angled trapezoid, so that liquid metal circuits with different line widths can be written by using different positions of the refill 7, and the application range of the electronic circuit DIY writing pen is wider. This electronic circuit DIY writing pen can quickly write electronic circuit graphics with different line thicknesses and different shapes.

[0049] In another example, Figure 2 As shown, the pen core 7 includes an ink outlet head and a fiber brush. The fiber brush and the ink outlet head are arranged in sequence along the writing direction. When the hose 5 is squeezed, the extruded liquid metal flows out of the ink outlet head. The pen core 7 is slid along the trend, and the fiber brush can brush the flowing liquid metal into a thin layer. The liquid metal circuit written by this electronic circuit DIY writing pen has good uniformity. The fiber brush and the ink outlet head can be fixed to each other by bonding, binding and other methods.

[0050] Optionally, the ink outlet includes a stainless steel tank and an ink outlet at the bottom of the stainless steel tank, and the fiber brush is made of pig bristles, nylon or squirrel hair, so that the writing effect of the pen core 7 is good and it is not easily corroded by the liquid metal. The bottom of the stainless steel tank can be a plane or an inclined surface, preferably, the bottom of the stainless steel tank is an inclined surface inclined upward, that is, its height gradually decreases in the direction of writing (it can also be described as the height from the substrate gradually increases). Such a setting can make the edge of the bottom of the stainless steel tank closer to the substrate during the writing process also play a role in spreading the liquid metal to a certain extent.

[0051] Optionally, in a direction perpendicular to the forward direction of writing, i.e., the width direction of the fiber brush, the size d1 of the fiber brush and the maximum size d2 of the ink outlet in this direction satisfy 2.5mm≥d1-d2≥1.5mm, so that the working range of the fiber brush can completely cover the working range of the ink outlet, i.e., all liquid metal coming out of the ink outlet will be evenly brushed by the fiber brush, which is beneficial to improve the uniformity of the liquid metal circuit written by the electronic circuit DIY writing pen. The ink outlet can be circular or rectangular. When the ink outlet is circular, the diameter can be 1mm~2mm, and when the ink outlet is rectangular, the length can be 1.5mm~3mm and the width can be 0.5mm~1.5mm.

[0052] Optionally, in the height direction of the electronic circuit DIY writing pen, the free end of the fiber brush exceeds the ink outlet, and the length of the excess 1 satisfies 3.5mm≥1≥2.5mm, so that when the fiber brush contacts the surface of the substrate during the writing process of the electronic circuit DIY writing pen, there is a suitable distance between the ink outlet and the surface of the substrate, which can accommodate the outflowing liquid metal and avoid the ink outlet from being contaminated by contact with the surface of the substrate, thereby affecting the ink discharge effect. Optionally, in the height direction of the electronic circuit DIY writing pen, the height of the fiber brush is 7mm and the height of the ink outlet is 4mm.

[0053] In addition, the electronic circuit writing pen in the prior art usually adopts a ball-shaped ink-discharging method in the pen core, so when the conductive ink in the electronic circuit writing pen is of high viscosity or is doped with particles, the pen core of the electronic circuit writing pen is easily blocked, unable to discharge ink, and cannot be repaired. However, the pen core 7 of the electronic circuit DIY writing pen in the embodiment of the present invention has the two structures as described above, and is not easily blocked even if the liquid metal has a high viscosity or is doped with particles, and the pen core 7 is easy to clean.

[0054] Optionally, the width of the refill 7 in the electronic circuit DIY writing pen in the embodiment of the present invention is 2 mm to 3 mm, and optionally, the width of the top of the refill is 3 mm and the width of the bottom is 2 mm, so that liquid metal circuits with different line widths can be written through different positions thereof. The refill 7 here is not limited to the two examples described above.

[0055] The thickness of the liquid metal circuit written by the electronic circuit DIY writing pen is 50μm to 80μm. For commonly used power supplies and components, the line width of the liquid metal circuit is 3±1mm to meet the needs, that is, one stroke or two strokes are enough using the electronic circuit DIY writing pen described above.

[0056] In addition, an embodiment of the present invention further provides a DIY kit for an electronic circuit, and the DIY kit for an electronic circuit includes any one of the above-mentioned DIY writing pens for an electronic circuit.

[0057] Optionally, the DIY kit of the electronic circuit also includes: one or more of an attachment kit, a packaging kit, a coating kit, and a modification kit.

[0058] The attachment kit includes an attachment tool, a power source and at least one component. The attachment kit is used to attach the power source and the at least one component so that the power source and the at least one component are connected to the liquid metal circuit. The power source, the liquid metal circuit and the at least one component form a closed loop.

[0059] The packaging kit includes a container containing packaging materials and a packaging tool. The packaging kit is used to form a packaging layer to package the liquid metal circuit, the power supply and at least one component. The packaging layer can effectively package the liquid metal circuit, which helps to ensure the structural stability of the electronic circuit.

[0060] The encapsulation material can be liquid Band-Aid (spray), hair gel (spray), nail polish (brush), PU film (direct adhesion), chitosan aqueous solution, polyvinyl pyrrolidone aqueous solution, polyvinyl alcohol aqueous solution, polyvinyl butyral alcohol solution, hyaluronic acid aqueous solution, hyaluronic acid, sodium alginate gel.

[0061] The application kit includes a container containing an isolation material and an application tool. The application kit is used to form an isolation layer on a substrate, especially human skin. The isolation layer must be able to adhere to liquid metal and be insulating. In addition, the isolation layer can also have properties such as biocompatibility, so that when writing liquid metal circuits on human skin, an isolation layer can be formed on the human skin first, and then the liquid metal circuits can be written on the isolation layer without causing damage to the human skin.

[0062] Optionally, the isolation material can be quick-dry within 5 to 20 minutes, and can be washed off within 10 minutes using hand sanitizer or soap. The isolation material can be one or more. When the isolation material is multiple, the corresponding application tools are also multiple to form an isolation layer with a multi-layer structure. For example, the isolation layer is a double-layer structure, the bottom layer (the layer in contact with the skin) has biocompatibility, and the top layer (the layer in contact with the liquid metal) can adhere to the liquid metal and the encapsulation layer. The isolation material can be one or more of PU transdermal glue, double-sided tape, hand mask (or hand wax), VAE emulsion or two-component vulcanized silicone (component A is vulcanized silicone, component B is a platinum catalyst), etc. Preferably, the isolation material includes two-component vulcanized silicone and a hand mask (or hand wax) to form an isolation layer with a bottom layer of vulcanized silicone and a top layer of a hand mask (or hand wax).

[0063] The modification kit includes a Liquid Metal Eraser Pen that can erase excess Liquid Metal lines.

[0064] The liquid metal erasing pen is filled with modification ink, which can be water, ethanol, ethylene glycol, propylene glycol, n-butanol, isobutanol, isopropanol, isopentanol, 1,3-butanediol, n-hexane, cyclohexane, n-heptane, n-octane, isooctane, or a mixture of one or more of the following, or the modification ink is a 1% by mass sodium hydroxide solution, or the modification ink is a 1% by mass hydrochloric acid solution. After the liquid metal is erased with the above modification ink, the residual modification ink can evaporate by itself without causing any adverse effects.

[0065] An embodiment of the present invention provides a DIY kit for an electronic circuit. Using the DIY kit can simplify the manufacturing method of the electronic circuit and improve the designability.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electronic circuit DIY writing pen, characterized in that: include: Internal thread pen tube; An external threaded column, the external threaded column being threadedly connected to the internal threaded hard pen tube; A rotating knob, the rotating knob being fixedly connected to the top of the external threaded column; A hose, wherein the hose is filled with liquid metal, and the top of the hose is sealedly connected to the bottom of the internally threaded hard pen tube; A sealing plug, wherein the sealing plug is located in the hose, the top of the sealing plug is against the bottom of the external threaded column, and a pressure chamber is formed between the bottom of the sealing plug and the liquid metal surface; A refill connection seat, the refill connection seat being sealingly connected to the bottom of the hose; A pen core, wherein the pen core is fixed on the pen core connecting seat; The liquid metal is a gallium-indium eutectic alloy or a gallium element or a gallium-indium-tin eutectic alloy or a mixture of a gallium-based liquid metal and iron-nickel powder and silver-coated copper powder; The pen core comprises an ink outlet head and a fiber brush, and the fiber brush and the ink outlet head are arranged in sequence along the writing direction; The ink outlet head comprises a stainless steel tank and an ink outlet located at the bottom of the stainless steel tank; the fiber brush is made of pig bristle, nylon or squirrel hair; In a direction perpendicular to the forward direction of writing, the size d1 of the fiber brush and the maximum size d2 of the ink outlet in this direction satisfy 2.5mm≥d1-d2≥1.5mm; in the height direction of the electronic circuit DIY writing pen, the length of the free end of the fiber brush exceeding the ink outlet satisfies 3.5mm≥l≥2.5mm.

2. The electronic circuit DIY writing pen according to claim 1, characterized in that: The pen core is a fiber pen core, and the material of the fiber pen core is pig bristle, nylon or squirrel hair.

3. The electronic circuit DIY writing pen according to claim 1, characterized in that: A cross-shaped groove is arranged on the top of the rotating knob.

4. The electronic circuit DIY writing pen according to claim 1, characterized in that: The rotating knob is made of hard plastic, nylon, organic glass or stainless steel; the internally threaded hard pen tube is made of hard plastic, nylon, organic glass or stainless steel; the externally threaded column is made of hard plastic, nylon, organic glass or stainless steel; the refill connecting seat is made of hard plastic, nylon, organic glass or stainless steel.

5. The electronic circuit DIY writing pen according to claim 1, characterized in that: The sealing plug is a rubber sealing plug.

6. The electronic circuit DIY writing pen according to claim 1, characterized in that: The hose is a rubber hose.

7. A DIY kit for electronic circuits, characterized in that: include: An electronic circuit DIY writing pen as claimed in any one of claims 1 to 6.

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