CN218830684U - Flexible far infrared electric heating assembly suitable for wearable equipment - Google Patents
Flexible far infrared electric heating assembly suitable for wearable equipment Download PDFInfo
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- CN218830684U CN218830684U CN202221820842.8U CN202221820842U CN218830684U CN 218830684 U CN218830684 U CN 218830684U CN 202221820842 U CN202221820842 U CN 202221820842U CN 218830684 U CN218830684 U CN 218830684U
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Abstract
The utility model discloses a flexible far infrared electric heating element suitable for wearing equipment, this electric heating element comprises flexible heat-generating body and power lead-out wire, flexible heat-generating body generate heat the chip by two-layer flexible cloth and far infrared and form through heating bonding, power lead-out wire constitutes including connecting terminal and power cord, the connecting terminal riveting on the copper pole at far infrared chip both ends that generate heat, the power cord joint on connecting terminal's wiring groove. Because the whole surface of the electric heating component is a heating surface, the electric heating component is uniform in heating, small in surface temperature difference, good in flexibility and toughness, and water-proof grade can reach IPX7 grade and can be washed, and when the electric heating component is applied to wearing equipment, no obvious hard texture and no sound exist, and the heat of the electric heating component is mainly radiated in a far infrared mode, so that the electric heating component has a physical therapy effect.
Description
Technical Field
The utility model relates to an electric heating assembly, concretely relates to flexible far infrared electric heating assembly suitable for wearing equipment.
Background
Far infrared electric heating technology is beginning to the middle of the last century, utilizes radiation heat transfer and electromagnetic waves to transfer energy, and is an energy-saving technology which is mainly popularized. When the wavelength of the far infrared ray is consistent with the absorption wavelength of the heated object, the heated object absorbs a large amount of the far infrared ray, and molecules and atoms in the object generate resonance and generate strong vibration, so that the temperature of the object is increased, and the purpose of heating is achieved. Early far infrared heating methods mainly used strip-shaped or linear heating elements for heating, such as far infrared electric heating film materials and far infrared electric heating cables.
With the improvement of the living standard of people, the application scene of far infrared is further widened, and the far infrared is widely applied to the fields of infrared physiotherapy, building heating, food drying, sterilization, wearable equipment, automobile heating, household appliances and the like. Especially in the fields of infrared physiotherapy, wearable equipment, automobile heating and household appliances, the requirement on the flexibility of a heating body is high. At present, generally, the electric heating wires are woven into the fabrics, or the film materials of thermoplastic polymers are adopted, which mainly has the following problems: 1) The heating is not uniform, the temperature difference is large, and the user experience is poor; 2) The flexibility is poor, and the impact resistance is poor; 3) The service life is short, and the service life of the electric heating wire and the membrane material is short, generally not more than 3 ten thousand hours.
Chinese patent publication No. CN105208692A discloses a flexible heating film assembly and a preparation method thereof, which comprises a flexible heating layer, wherein the flexible heating layer is formed by laminating and connecting 5-1000 layers of heating films, a loose and porous structure is formed between the layers, the flexible heating layer is connected with a circuit system, and at least one of the upper side and the lower side of the flexible heating layer is provided with a protective layer; the multilayer heating film on the flexible heating layer is connected in a laminating way, a loose and porous structure is formed between layers, and the unique nanometer pores, the larger length-diameter ratio and the higher specific surface area enable the flexible heating layer to have excellent elastic modulus and bending strength, so that the macroscopic flexibility and the hand feeling comfort of the flexible heating film component are ensured. In addition, the flexible heating membrane component has ultrathin thickness and high softness, is easy to process and form, is washing-resistant and is a good insulating material. But its insulating layer adopts thermoplastic plastic film such as polytetrafluoroethylene porous membrane, polyimide film, polyethylene membrane, polyvinyl chloride membrane, and these film materials have certain flexibility, but toughness is relatively poor, when using wearing equipment, has obvious stereoplasm and feels, can send certain sound along with human activity, influences user experience.
In view of the above problem, the utility model discloses a flexible far infrared electric heating assembly suitable for wearing equipment. Which has the technical characteristics as described below to solve the existing problems.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's not enough, the utility model aims to provide a flexible far infrared electric heating assembly suitable for wearing equipment, its whole face all is the heating surface, and it is even to generate heat, and the surface difference in temperature is little, and compliance and toughness are better, and waterproof grade can reach IPX7 level and can wash, does not have obvious hard feel, noiselessness when being applied to wearing equipment, and its heat mainly radiates with the form of far infrared, has the physiotherapy effect.
The utility model provides a flexible far infrared electric heating assembly suitable for wearing equipment, wherein, this electric heating assembly comprises flexible heat-generating body and power supply lead-out wire, flexible heat-generating body generate heat the chip and form through the heating bonding by two-layer flexible cloth and far infrared, power supply lead-out wire constitutes including connecting terminal and power cord, connecting terminal riveting on the copper pole at far infrared chip both ends that generate heat, the power cord joint on connecting terminal's wiring groove.
The flexible far infrared electric heating component suitable for the wearable equipment is characterized in that the far infrared heating chip is formed by hot-pressing composite shaping and cold-pressing normal-temperature curing of an upper insulating layer, a lower insulating layer and a far infrared heating layer with the front surface and the back surface coated with flexible colloidal solution.
The flexible far infrared electric heating component is suitable for the wearable equipment, wherein the insulating layer is made of flexible paper materials, the flexible paper materials are paper materials formed by adopting a wet papermaking process or a dry papermaking process in combination of one or more of high-purity wood pulp fibers, polyimide fibers, aramid fibers, polyphenylene sulfide fibers, tencel fibers and nano cellulose fibers, and the thickness of the flexible paper materials is 3-50 mu m.
The long side and the wide side of the insulating layer are 5-20mm larger than those of the far infrared heating layer.
In the flexible far infrared electric heating component suitable for the wearable device, the far infrared heating layer is made of carbon fiber conductive paper, the volume resistivity of the conductive paper is 0.1-1 omega-cm, and the two copper foil strips arranged on the copper electrode are as long as the carbon fiber conductive paper.
The flexible far infrared electric heating component suitable for the wearable device is characterized in that the flexible colloidal solution is formed by uniformly mixing a flexible colloidal main body and a curing agent according to a weight ratio of 1.5-3: 3-6:0.5-1.5:6-8, and the curing agent is polyisocyanate.
The flexible far infrared electric heating assembly suitable for the wearable device is characterized in that the polyurethane prepolymer adopts castor oil, polypropylene glycol, polyurethane acrylate and diphenylmethane diisocyanate according to the weight ratio of 1:1:0.1-0.2:0.4-0.6, the polyurethane catalyst adopts bisphenol-A polyoxypropylene ether, the water absorbent adopts aluminosilicate, and the flexible filler adopts calcium carbonate or talcum powder.
The flexible far infrared electric heating component suitable for the wearable equipment is characterized in that the single-side gluing amount of the far infrared heating layer is 20-80g/m 2 。
The flexible far infrared electric heating component suitable for the wearable equipment is characterized in that the hot-pressing composite forming temperature of the far infrared heating chip is 60-85 ℃, the hot-pressing composite forming time is 90-240min, and the hot-pressing composite forming pressure is 10-50kg/cm 2 . The cold pressing pressure is 3-7 days, and the cold pressing pressure is 50-40kg/cm 2 。
The flexible far infrared electric heating component suitable for the wearable equipment is characterized in that the flexible cloth is formed by compounding non-woven fabrics and hot melt adhesive with low melting temperature, the non-woven fabrics are polyester fiber non-woven fabrics, polyolefin fiber non-woven fabrics and polyamide fiber non-woven fabrics, and the basis weight of the non-woven fabrics is 15-50g/m 2 The low-melting-temperature hot melt adhesive can be one of polyamide hot melt adhesive, polyethylene hot melt adhesive, polyester hot melt adhesive or ethylene-vinyl acetate copolymer hot melt adhesive, and the glue application amount of the low-melting-temperature hot melt adhesive on the non-woven fabric is 10-30g/m 2 。
The flexible far infrared electric heating assembly is characterized in that the connecting terminal is riveted on copper electrodes at two ends of the far infrared heating chip through riveting terminals, the connecting terminal is an OT type terminal, a T-shaped end wiring groove of the OT type terminal is used for clamping and fixing a power line, and the riveting terminals are composed of hollow copper rivets and fastening gaskets.
The flexible far infrared electric heating component suitable for the wearable device is characterized in that a group of symmetrical round holes are formed in the copper poles at the two ends of the far infrared heating chip, and the diameter of the round holes in the far infrared heating chip is the same as that of the hollow copper rivets.
The flexible far infrared electric heating component suitable for the wearable device is characterized in that the two layers of flexible cloth and the far infrared heating chip are heated and bonded by adopting an electric iron, a flat plate hot press or an electric heating roller, the hot-press bonding temperature is 100-140 ℃, and the hot-press bonding time is 5-15s.
The utility model relates to a flexible far infrared electric heating assembly suitable for wearing equipment makes it compare with prior art owing to adopted above-mentioned scheme, has following advantage and positive effect:
(1) The flexible far infrared planar electric heating component has wide application range, can be widely applied to heating fields such as wearable equipment, clothes, houses, seats, decorative wall surfaces, physical therapy equipment, automobiles, special equipment and the like as an electric heating component, and has low production cost and wide application prospect;
(2) The flexible far infrared planar electric heating component has wide application voltage range, can be designed in the range of 5-220V alternating current and direct current according to actual needs, and can meet the requirements of most application scenes;
(3) The whole surface of the heat of the flexible far infrared planar electric heating component of the utility model is a heating surface, the heat transfer mainly takes far infrared radiation as the main part, the electric heat conversion efficiency can reach 99 percent, the electric-thermal radiation conversion efficiency can reach 50 percent, the heat transfer efficiency is high, the flexible far infrared planar electric heating component is an advanced energy-saving material, and compared with the existing material, the energy can be saved by about 15 percent at least;
(4) The flexible far infrared surface-shaped electric heating component of the utility model has Shore hardness of 20-25A, no hard texture, good flexibility, folding resistance and waterproof performance reaching IPX7 level;
(5) The utility model discloses a flexible far infrared face form electric heating element's heat-generating body is the three-dimensional conductive network that the short carbon fiber was built, and its electrically conductive path is the physical structure that short carbon fiber built, has stable in structure's characteristics, detects through the infrared center of country, and its life can reach more than 10 ten thousand hours.
Drawings
FIG. 1 is a schematic structural view of a flexible heating element in a flexible far infrared electric heating assembly of the wearable device of the present invention;
FIG. 2 is a schematic diagram of the position of a circular hole in a flexible far infrared electric heating component suitable for a wearable device;
fig. 3 is a schematic structural view of an OT-type terminal in the flexible far infrared electric heating component of the wearable device;
fig. 4 is a schematic diagram of the connection between the OT-type terminal and the power line in the flexible far infrared electric heating assembly suitable for the wearable device;
FIG. 5 is a schematic structural view of a rivet in a flexible far infrared electric heating component of the wearable device of the present invention;
in the figure: 1. flexible cloth; 2. a far infrared heating chip; 3. an OT type terminal; 4. a power line; 5. riveting; 6. a circular hole.
Detailed Description
According to fig. 1 to 5 show, the utility model discloses a flexible far infrared electric heating assembly suitable for wearing equipment, include: the flexible planar heating component consists of a flexible heating body and a power supply outgoing line, wherein the flexible heating body is formed by heating and bonding two layers of flexible cloth 1 and a far infrared heating chip 2. The power supply lead-out wire assembly further comprises a connecting terminal and a power line 4. The connecting terminal is riveted on the copper poles at the two ends of the far infrared heating chip 2, and the power line 4 is clamped on the wiring groove of the connecting terminal.
The far infrared heating chip 2 is formed by hot-pressing composite shaping and cold-pressing normal-temperature curing of an upper insulating layer, a lower insulating layer and a far infrared heating layer with the front surface and the back surface coated with flexible colloidal solution.
The insulating layer is made of a flexible paper material, the flexible paper material is made of one or more of high-purity wood pulp fibers, polyimide fibers, aramid fibers, polyphenylene sulfide fibers, tencel fibers and nano cellulose fibers through a wet papermaking process or a dry papermaking process, and the thickness of the flexible paper material is 3-50 microns.
The long sides and the wide sides of the insulating layer are 5-20mm larger than those of the far infrared heating layer.
The far infrared heating layer is made of carbon fiber conductive paper, the volume resistivity of the conductive paper is 0.1-1 omega-cm, and the two copper foil strips are as long as the carbon fiber conductive paper. The carbon fiber conductive paper belongs to a conductive mechanism of a conductive channel, mainly depends on a three-dimensional conductive network built by short carbon fibers, and factors influencing the conductivity of the carbon fiber conductive paper comprise: the contact number, the contact resistance and the gap size, so that the conductivity of the carbon fiber conductive paper can be determined by adjusting the content of the carbon fibers and the basis weight of the paper when the carbon fiber conductive paper is prepared. In the case of carbon fibers of equivalent length and diameter: the higher the carbon fiber content, the lower the volume resistivity of the conductive paper and vice versa. Under the condition of the same content of carbon fibers, the volume resistivity of the conductive paper is a constant value, and the larger the basis weight of the conductive paper is, the lower the resistance of the conductive paper is, and the better the conductivity is. The conductivity of the conductive paper is calculated by adopting the following formula;
volume resistivity = cross sectional area of conductive paper/distance between copper poles resistance value.
The flexible colloid solution is formed by uniformly mixing a flexible colloid main body and a curing agent according to the weight ratio of 1.5-3. The flexible colloid main body adopts polyurethane prepolymer, polyurethane catalyst, water absorbent and flexible filler according to the weight ratio of 10:3-6:0.5-1.5:6-8, and the curing agent is polyisocyanate.
The polyurethane prepolymer is prepared from castor oil, polypropylene glycol, polyurethane acrylate and diphenylmethane diisocyanate according to the weight ratio of 1:1:0.1-0.2:0.4-0.6, the polyurethane catalyst adopts bisphenol-A polyoxypropylene ether, the water absorbent adopts aluminosilicate, and the flexible filler adopts calcium carbonate or talcum powder. The polyurethane adhesive is an adhesive containing urethane groups or isocyanate groups in molecular chains, the microstructure of the polyurethane adhesive is generally divided into a soft segment and a hard segment, the soft segment is polyol with a macromolecular chain structure, and the hard segment is an isocyanate curing agent, a micromolecular chain extender, a compound containing aromatic structures such as benzene rings and the like. By compounding the polyurethane prepolymer and the bisphenol A-propylene oxide polyether glycol, the bonding strength and flexibility of the cured polyurethane flexible colloidal solution can be greatly improved, and the Shore hardness of the flexible far infrared planar electric heating assembly is not more than 25A.
The single-side gluing amount of the far infrared heating layer is 20-80g/m < 2 >. The hot-pressing composite forming temperature of the far infrared heating chip 2 is 60-85 ℃, the hot-pressing composite forming time is 90-240min, and the hot-pressing composite forming pressure is 10-50kg/cm < 2 >. The cold pressing pressure is 3-7 days, and the cold pressing pressure is 50-40kg/cm < 2 >.
The flexible cloth 1 is formed by compounding a non-woven fabric and a low-melting-temperature hot melt adhesive, the non-woven fabric is one of a polyester fiber non-woven fabric, a polyolefin fiber non-woven fabric and a polyamide fiber non-woven fabric, the basis weight of the non-woven fabric is 15-50g/m < 2 >, the low-melting-temperature hot melt adhesive can be one of a polyamide hot melt adhesive, a polyethylene hot melt adhesive, a polyester hot melt adhesive or an ethylene-vinyl acetate copolymer hot melt adhesive, and the glue application amount of the low-melting-temperature hot melt adhesive on the non-woven fabric is 10-30g/m < 2 >. The far infrared heating chip 2 has good insulativity and flexibility, the flexible cloth material is compounded on the front surface and the back surface of the far infrared heating chip to improve the crease resistance and the strength of the flexible far infrared surface-shaped electric heating component, and meanwhile, after the hot melt adhesive with low melting temperature on the flexible cloth material is compounded on the far infrared heating chip 2 through hot melting, the polymer performance of the flexible far infrared surface-shaped electric heating component is stable, and the flexible far infrared surface-shaped electric heating component has good waterproof effect, so that the flexible far infrared surface-shaped electric heating component can meet the washing requirement.
The connecting terminal is riveted on copper poles at two ends of the far infrared heating chip 2 by a riveting terminal, the connecting terminal is an OT type terminal 3, and a T-end wiring groove of the OT type terminal 3 is used for clamping and fixing the power line 4. The riveting terminal consists of a hollow copper rivet 5 and a fastening gasket.
The copper poles at the two ends of the far infrared heating chip 2 are provided with a group of symmetrical round holes 6, and the round holes 6 on the far infrared heating chip 2 are the same as the hollow copper rivets 5 in diameter.
The two layers of flexible cloth 1 and the far infrared heating chip 2 can be heated and bonded by adopting an electric iron, a flat plate hot press or an electric heating roller, the hot-pressing bonding temperature is 100-140 ℃, and the hot-pressing bonding time is 5-15s.
The method for preparing the flexible far infrared electric heating component suitable for the wearable equipment at least comprises the following steps:
step 1: preparing an insulating layer;
step 2: preparing a far infrared heating layer;
and step 3: preparing a flexible colloidal solution;
and 4, step 4: respectively coating the front surface and the back surface of the far infrared heating layer prepared in the step 2 with the flexible colloidal solution prepared in the step 3 to obtain the far infrared heating layer coated with the flexible colloidal solution;
and 5: placing an insulating layer, a far infrared heating layer coated with a flexible colloidal solution and another insulating layer on the centrifugal paper from bottom to top in sequence to obtain a far infrared heating chip blank, and placing a layer of centrifugal paper on the blank;
step 6: placing the heating chip blank wrapped by the centrifugal paper obtained in the step 5 between two layers of steel plates;
and 7: repeating the steps 5 to 6 for 2 to 10 times;
and 8: placing the multi-layer far infrared heating chip blank prepared in the step 7 in parallel on a working table surface of a hot press, starting the hot press for hot pressing, moving the hot press to a cold press for cold pressing after the hot pressing is finished, and obtaining a far infrared heating chip after the cold pressing is finished;
and step 9: cutting the far infrared heating chip obtained in the step 8 according to the product requirements;
step 10: punching two copper electrode edges of the far infrared heating chip obtained in the step 9, and grinding the copper electrodes around the holes by using a grinding machine;
step 11: crimping the power supply lead wire on the OT type terminal by using crimping wire pliers;
step 12, riveting the wiring terminal obtained in the step 11 on the far infrared heating chip obtained in the step 10;
step 13: sealing the riveting terminal to obtain a far infrared heating chip with a leading-out wire;
step 14: cutting the flexible cloth;
step 15: and (3) placing the far infrared heating chip with the outgoing line obtained in the step (13) between two layers of flexible cloth, and performing hot melting compounding to obtain the flexible far infrared planar electric heating assembly.
Wherein, step 1 still includes:
step 1.1: pulping the flexible paper material;
step 1.2: grinding the flexible paper material into thick liquid;
step 1.3: papermaking to obtain an insulating layer;
step 1.4: the insulating layer is cut to the desired size.
The step 2 further comprises:
step 2.1: cutting the conductive paper according to the required size;
step 2.2: and (4) respectively binding copper poles on two sides of the cut conductive paper by using a sewing machine.
Step 2.3; rolling the front and back surfaces of the copper pole of the conductive paper with the copper pole pricked in the step 2.2 by using stainless steel circular tubes respectively to eliminate needle prick marks of a sewing machine;
step 3.1: weighing castor oil and polypropylene glycol according to the weight ratio, uniformly mixing, and removing water;
step 3.2: pouring the solution obtained after the water removal in the step 3.1 into a vacuum machine, keeping a vacuumizing state at the temperature of 30-80 ℃, sequentially adding polyurethane acrylate and diphenylmethane diisocyanate, and uniformly mixing to obtain a polyurethane prepolymer;
step 3.3: respectively weighing polyurethane prepolymer, polyurethane catalyst, water absorbent and flexible filler according to the weight ratio, pouring the mixture into a stirrer for homogenization, and obtaining a flexible colloid main body after homogenization, wherein the average time is 20-100min, and the homogenization speed is 600-1200 r/min;
step 3.4: respectively weighing the flexible colloid main body and the curing agent according to the weight ratio, homogenizing for 1-5min at the homogenizing speed of 800-1200r/min, and obtaining the flexible colloid solution after homogenizing.
The present invention has been described in detail with reference to the specific embodiments, but the present invention is not limited to the specific embodiments described above, which are only examples. Any equivalent modifications and substitutions to the system that would be obvious to one skilled in the art are intended to be within the scope of the invention. Therefore, changes and modifications that are equivalent to those made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (7)
1. The utility model provides a flexible far infrared electric heating assembly suitable for wearing equipment which characterized in that: this electric heating element comprises flexible heat-generating body and power supply lead-out wire, the flexible heat-generating body form through heating the bonding by two-layer flexible cloth and far infrared heating chip, power supply lead-out wire is constituteed and is included connecting terminal and power cord, connecting terminal riveting on the copper pole at far infrared heating chip both ends, the power cord joint on connecting terminal's wiring groove.
2. The flexible far infrared electric heating assembly suitable for the wearable device as claimed in claim 1, wherein: the far infrared heating chip is formed by hot-pressing composite shaping and cold-pressing normal-temperature curing of an upper insulating layer, a lower insulating layer and a far infrared heating layer of which the front surface and the back surface are coated with flexible colloidal solution.
3. The flexible far infrared electric heating assembly suitable for the wearable device as claimed in claim 2, wherein: the long sides and the wide sides of the insulating layer are 5-20mm larger than those of the far infrared heating layer.
4. The flexible far infrared electric heating assembly suitable for the wearable device as claimed in claim 2, wherein: the far infrared heating layer is made of carbon fiber conductive paper, the volume resistivity of the conductive paper is 0.1-1 omega-cm, and the two copper foil strips arranged on the copper electrode are as long as the carbon fiber conductive paper.
5. The flexible far infrared electric heating assembly suitable for the wearable device as claimed in claim 2, wherein: the single-side gluing amount of the far infrared heating layer is 20-80g/m 2 。
6. The flexible far infrared electric heating assembly suitable for the wearable device as claimed in claim 1, wherein: the connecting terminal is an OT type terminal, a T-shaped end connecting groove of the OT type terminal is used for clamping and fixing a power line, and the riveting terminal is composed of a hollow copper rivet and a fastening gasket.
7. The flexible far infrared electric heating assembly suitable for use in a wearable device as claimed in claim 6,
the method is characterized in that: a group of symmetrical round holes are arranged on the copper poles at the two ends of the far infrared heating chip,
the diameter of the round hole on the far infrared heating chip is the same as that of the hollow copper rivet.
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| CN202221820842.8U CN218830684U (en) | 2022-07-15 | 2022-07-15 | Flexible far infrared electric heating assembly suitable for wearable equipment |
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| CN202221820842.8U CN218830684U (en) | 2022-07-15 | 2022-07-15 | Flexible far infrared electric heating assembly suitable for wearable equipment |
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