KR20110053863A - Wearable heating pad using flexible heating unit - Google Patents

Abstract

PURPOSE: A wearable heating pad using a flexible heating unit is provided to be used in an outdoor place as well as an indoor place by improving portability thereof. CONSTITUTION: A wearable heating pad using a flexible heating unit comprises a heating pad(30) and a controller(20). The heating pad is formed in a rectangular shape and includes fasteners(10,10'). The fasteners are formed to correspond to each other is both end points of the heating pad. The fastener makes the heating pad worn on the human body. The controller is connected to the heating pad and includes a time setting unit, a temperature setting unit, a central processing unit, and a rechargeable power supply unit(26). The central processing unit supplies power to the heating pad based on the set temperature and intermittent time.

Description

Wearable heating pad using flexible heating element {Wearable heating pad using flexible heating unit}

The present invention relates to a heating pad that can be worn and used on the back, waist, shoulders, arms, and legs of a human body, and more particularly, can be carried on a flexible heating element made of a heating mesh or an elastic heating wire or a conductive twisted yarn. By combining and forming a controller with a built-in power supply, and by forming a combination of various types of fasteners for coupling and separating both ends to each other, the heating element can be easily worn on the back, waist, shoulder, arm, leg, etc. according to the needs of the user. By going to cold weather as well as to effectively get the effect.

As the field of functional polymers, the importance of electrically conductive polymers is increasing. By imparting electrical conductivity to the polymer material, it is possible to obtain the advantages of excellent physical and chemical properties and functionalities of the polymer material, as well as to obtain an inexpensive material in terms of production cost.

Applications of the electrically conductive polymer are also diversified and specialized for antistatic, self-heating, or electromagnetic wave absorption. Various conductive composite materials have been manufactured for this purpose. In semi-crystalline polymers containing conductive fillers, increasing the temperature increases the layer between filler particles in the polymer due to thermal expansion in the molten region of the polymer, which hinders the flow of electrons and thus the resistance as the temperature increases. This suddenly high increase occurs, which is called PTC (Positive Temperature Coefficient).

In general, many polymer materials have been recognized as a good insulating material, and polymer materials play an excellent role as an electric insulator due to their low electrical conductivity. However, when fillers such as carbon black, carbon fiber, and metal powder are added, It serves as a conductor. The added fillers form an electrical pathway in the polymeric material and act as a path for the electrons. PTC is a material that acts as a conductor by inserting conductive particles into a polymer material, and is a generic term for materials used to prevent damage to products or electronic circuits caused by a certain temperature or overcurrent.

PTC devices that have typically been used have excellent thermal and electrical protection.

A fuse used for overload protection has excellent protection against overcurrent, but there is an inconvenience in that the fuse needs to be replaced when the current is cut off due to the blown fuse due to the overcurrent. Although it provides excellent temperature protection and recovery function, it is not sensitive to overcharge, making it difficult to use in precise electronic circuits. On the other hand, PTC using polymer has the advantage of excellent protection against overheating and overload protection.

The PTC material has the property of increasing electrical resistance as the temperature increases, and by imparting this property to the polymer, the disadvantages of being limited by the low electrical conductivity, high process cost, and fixed shape of the conventional ceramic PTC Security can be used to take advantage of better properties. In particular, since the minimum resistance is very small and the form is free, it is already being actively used in the design of small appliances, and it is increasing rapidly. It also has the function of automatically returning without the inconvenience of replacement when the temperature drops and the overcurrent is removed after blocking by heat or current.

After the PTC characteristic, a new conductive network is formed due to the change of the dispersed state of the conductive particles in the molten state of the polymer, and consequently, a negative temperature coefficient (NTC) phenomenon in which the resistance is greatly reduced. Since the properties imparted to the conductive polymer by the PTC effect can be lost by the NTC phenomenon, the NTC phenomenon is a major obstacle to the PTC phenomenon. NTC phenomenon is a phenomenon in which a new structure is formed by the movement of the conductive particles in the molten state, it is possible to form a network to strongly adhere the conductive particles by crosslinking to suppress the movement of the conductive particles to obtain structural stability.

The most widely used conductive particles added to impart PTC function to the polymer are carbon black and carbon fiber, and the polymer material uses a polymer having crystallinity such as PE. The polymer PTC device has a role of preventing damage to electronic products or electronic circuits, and thus is freely used in the design of small devices, but has a rigid plastic structure because it is cured by adding a crosslinking agent to suppress NTC phenomenon. Therefore, there is a problem in using it for general heating element use.

In addition, the semi-crystalline polymer containing the conductive filler increases the temperature between the filler particles in the polymer due to thermal expansion in the switching temperature of the polymer, which will disturb the flow of electrons As the resistance increases suddenly and greatly increases, the amplitude between repetitive thermal contraction and thermal expansion continuously occurs to the crystal melting point, which shortens the life of the product.

Accordingly, a mixture of liquid silicone rubber and conductive carbon black or liquid silicone rubber is formed on the surface of a mesh structure in which fibrous or soft synthetic resins or rubber yarns are placed in a lattice form. And a flexible heating mesh made by impregnating or coating coating a conductive composition consisting of a mixture of graphite powder (Graphite powder) is a trend that is attracting great attention.

The flexible heating mesh is formed by coating a conductive composition on the surface of the mesh structure frame, and the power supply line is connected to the power supply line by connecting the power supply lines to both ends of the strings or blades corresponding to the horizontal or vertical direction in the mesh structure frame. By applying a conductive composition between the power supply line is applied to the flexible heating mesh due to the function of the resistor having the conductive composition has the property that is heated. Such flexible heating mesh can control the heating temperature according to the power of the applied power, and it is relatively easy to carry out variable size or thickness, so it can be used for various purposes or purposes such as heating plate or heating pad. Will have.

In addition, a heating wire generally used as a heat source of a heater such as an electric blanket, an electric blanket, or a pack of steam packs was initially used as a metal wire such as a copper wire that generates heat by itself due to a high resistance value. However, the heating wire made of metal wire has a change in physical properties due to overheating when the heating time has elapsed for a certain time or when it is overloaded. Accordingly, the heat transfer efficiency is rapidly lowered or there is a risk of fire. There was a problem that the unstable and the magnetic field is increased to generate harmful electromagnetic waves to the human body.

Accordingly, in recent years, a heating wire made of carbon fiber as a conductive wire is used in most cases. The heating wire includes a conductive wire made of an aggregate of carbon fiber yarns, an insulating layer overlaid on the outer circumferential surface of the conductive wire, and wrapped around the outer circumferential surface of the insulating layer. It consists of an outer layer. On the other hand, the heating wire is a specific frequency is generated as the current flows through the conductive wire when the power is applied, the heat generation phenomenon is generated by the resonance of this frequency and noise generated when using the heater due to the resonance noise of this frequency resonance There was a problem.

Therefore, in recent years, heating wires that block resonance noise by tying the conductive wires by using separate wires at regular intervals have been produced, but these heating wires are produced because the work process is very difficult, which not only decreases productivity but also requires unnecessary binding lines. There was a problem that the unit price increases. In particular, since the conventional heating wire is a rigid conductive wire is disposed in the longitudinal direction, there is a limitation in the use that can be applied only to the heater that does not require elasticity, such as electric heating plate or electric blanket.

In this regard, the heating wire having elasticity has been widely applied in recent years, and is widely applied in various fields. Such a flexible heating wire is formed by winding a conductive coil wire on the outer surface of the flexible core material, and an elastic insulating material on the outside of the core material and the conductive coil wire. It is made by covering.

The flexible heating wires are provided with separate power supply lines at both ends of the plurality of flexible heating wires arranged side by side, and the power supply wires are electrically connected to the conductive coil wires of the flexible heating wires. When AC or DC power is supplied, the conductive coil wire inside the flexible heating wire generates heat while acting as a resistor, and thus, the entire flexible heating wire generates heat and plays a role as a heating element having a specific size.

The heating element made by using the flexible heating mesh or the flexible heating wire is used as a heating means such as an electric sheet or an electric cushion and an electric mat, so that it can be safely used from bending and bending.

However, the heating plate or the heating pad by the heating element made of the flexible heating mesh or the flexible heating wire as described above has excessive power consumption because it continuously provides power set by the user and causes continuous operation and heat generation. The use of household AC power comes with many restrictions on mobility. In particular, in the outdoor or camping place where the use of AC power is not possible or inconvenient, it has a closed end that cannot use the heating pad as described above.

In addition, the flexible heating wire used as a heating source of the heating plate or the heating pad is to supply power only at both ends of the heating mesh. When the length of the flexible heating wire is long, the conductive coil wire is a resistor so that the power supply distance As the distance increases or becomes longer, the resistance value increases, which causes an instantaneous voltage drop and the amount of current decreases, causing the heat generation temperature to drop.

In addition, due to voltage drop and decreasing amount of current, the local low temperature phenomenon occurs or the heat generation itself is not available due to the technical limitations such as difficult to use as a heating element. In addition, when the local high temperature phenomenon occurs, the insulation coating layer is destroyed, which may cause problems of safety accidents such as electric shock or fire.

The present invention is to solve the problems as described above, connecting the controller with a built-in rechargeable power supply to the heating pad made by embedding the main and auxiliary power lines in the heating element made of a flexible heating mesh or flexible heating wire or conductive twisted yarn, By forming a combination of fasteners of various types to be coupled or separated from both ends of the heating pad,

It is an object of the present invention to provide a wearable heating pad using a flexible heating element that can be easily worn on a desired body part according to a user's needs while reasonably overcoming the problems of the conventional heating element.

In order to achieve the above object, the present invention provides a coupling between a fastener corresponding to each other, such as Velcro tape, at both ends of a rectangular heating pad made of a flexible heating mesh or an elastic heating wire, and the heating pad includes a rechargeable power supply unit. It is configured to be connected to the controller having, and the rechargeable power supply unit in the controller is connected to the AC adapter, it is configured to be worn on the back or waist or shoulders, arms, legs, etc. of the human body using the fastener.

The present invention can be easily worn on the user's desired body parts, as well as convenience of use, regardless of wearing position is very high utilization, and excellent mobility in using the rechargeable power source, so of course the supply of power indoors This can be used outdoors, which is not easy, and the flexible heating element maintains an even distribution of voltage as a whole so that the heating temperature can be maintained evenly while preventing current collision or voltage drop. It is to prevent the back and have an effect of extending the service life.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor may properly define the concept of the term to describe its invention in the best possible way And should be construed in accordance with the principles and meanings and concepts consistent with the technical idea of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall configuration diagram of a heating pad according to the present invention, Figure 2 is a state diagram wearing a heating pad according to the present invention, Figure 3 is another embodiment of the heating pad according to the present invention, Figure 4 is in Figure 3 Is a state of wearing the heating pad.

The wearable heating pad according to the present invention is connected to the controller 20 having the rechargeable power supply unit 26 to various types of heating pads 30 and the heating pads 30 are worn on various parts of the body. It can be utilized for the use of cold protection and a poultice from the high temperature heat by (30).

That is, the controller 20 and the heating pad 30 have a connection structure by a general plug jack and a socket which can be separated from each other, and the controller 20 is also separated by the AC adapter 27 and the plug jack and the socket. It has a connection structure of and.

Accordingly, the heating pad 30 is worn on the necessary part of the body in a state where sufficient charging is performed on the rechargeable power supply unit 26 inside the controller 20 in the home using the AC adapter 27. Then, when the controller 20 is operated so that the power of the rechargeable power supply unit 26 is supplied to the heating pad 30, the heating pad 30 may be heated and heated as the heating pad 30 is heated.

Particularly, since the heating pad 30 has a rectangular rectangular shape, the heating pad 30 can be worn around an arm or a leg, and both ends of the heating pad 30 correspond to the fasteners 10 and 10 '. Since the heat generating pad 30 is worn on the arm or leg, the fastening pads 10 and 10 'may be fixed so that the wearing state of the heat generating pad 30 is maintained.

Here, the fasteners 10 and 10 'are applicable to various well-known types such as Velcro tape or hooks and buttons, and in the case of fasteners 10 and 10' made of Velcro tape. It is preferable to form a long Velcro tape extending in the direction of the heating pad 30 so as to maintain a tight contact without loosening according to the wearing parts of different thickness, such as arms and legs, fasteners made of hooks or buttons In the case of (10) (10 '), the heating pad 30 is fixed regardless of the worn portion by attaching and fastening the fastener on one side to a corresponding fastener corresponding to the desired position by repeatedly forming the corresponding fastener at a predetermined interval. ) Can be made in close contact.

In addition, when the heating pad 30 is to be worn on the user's back or waist portion, the separate elastic band 11 using fasteners 10 and 10 'formed at both ends of the heating pad 30. By using the 11 'connection, the elastic bands 11 and 11' can be easily worn on the user's back or waist due to the extended length.

That is, the elastic band (11) (11 ') is made of elastic bands such as high-strength fabric paper or spandex, the end of the elastic band (11) (11') is also a fastener of the heating pad (30) ( 10) By forming another fastener corresponding to 10 ', both ends of the stretchable bands 11 and 11' can be easily and firmly fixed.

Therefore, when both ends of the heating pad (30) in close contact with the user's back or waist in the chest or belly of the elastic band (11) (11 ') elastic band (11) (11) By the elastic restoring force of the ') the heating pad 30 is able to maintain a wearing state in close contact with the back or waist. Accordingly, the heating pad 30 in the state in which the elastic bands 11 and 11 'are combined can be worn on the shoulder or neck in addition to the user's back or waist, and thus has excellent convenience in use.

In particular, the heating pad 30 as described above is worn in close contact with the human body can quickly receive the heating effect of the heating pad 30 and the heat loss is minimized, so the efficiency is excellent, and the heating pad 30 is worn Regardless of the type of shirts, vests or jumpers in a state, clothes can be worn for convenience, and the convenience of use is excellent. Since the heat generated by the heating pad 30 is circulated throughout the clothes, the effect of cold protection is very high. It is outstanding.

In addition, the close contact with the user's back or waist is very little foreign body wear due to wearing, and the problems such as being limited to ventilation or sweating is insignificant enough to not feel any discomfort.

Furthermore, when the heating pad 30 is worn on the waist, the warmth is most efficiently obtained because the human body continuously heats the spine nodes of Nos. 6, 7, and 8, which can absorb heat most efficiently. It will be able to maximize the effect of cold protection as well as cold weather. In addition, since the wearable heating pad of the present invention is limitedly worn only on the local part of the human body, the heating pad is smaller, which can drastically reduce the power consumption in the rechargeable power supply unit 26, thereby reducing the size of the rechargeable power supply unit 26. Excellent portability as well as having a feature that can greatly extend the heat and operating time.

Hereinafter, the detailed configuration and operation of the controller and the heating pad for the wearable heating pad of the present invention will be described.

As shown in FIG. 5, the controller 20 of the heating pad according to the present invention includes a selection button unit 21, a time setting unit 22, and a temperature setting unit 23, and the time setting unit 22. And the central processing unit 24 in a state in which the temperature setting unit 23 is connected with the power supplied from the separate rechargeable power supply unit 26, the temperature and power adjusted by the time setting unit 22 and the temperature setting unit 23. The power is delivered to the heating pad 30 with an intermittent time. In addition, the time, temperature and state of charge set as described above can be confirmed through a separate display unit 25.

Here, the rechargeable power supply unit 26 is made of a low-voltage direct-current battery or a supercapacitor, and the like is to use the power stored in the state stored in the home AC power using the AC adapter 27 or the like. Due to the rechargeable power supply unit 26, the heating pad 30 will not be affected by movement, and thus will be able to move or perform activities while directly worn on various parts of the body.

That is, the controller 20 controls the power provided from the rechargeable power supply unit 26 and transmits the power to the heating pad 30. The controller 20 includes a selection button unit 21 and The time setting part 22, the temperature setting part 23, the central processing part 24, and the display part 25 are formed, and the rechargeable power supply part 26 is integrated.

Accordingly, when the power on, off, time setting and temperature setting are performed through the selection button unit 21, the central processing unit 24, which receives such a signal, generates power suitable for the set value as described above. At the same time, the display unit 25 displays the set time or temperature, displays the remaining battery capacity of the rechargeable power supply unit 26, and the battery voltage. It will display the status of being charged or completed. The display unit 25 may include an LED, a liquid crystal display, and the like.

Therefore, when the operation sequence for the heating pad of the present invention using the controller 20 as described above, first to set the heating temperature for the heating pad 30 by pressing the select button 21, for example Whenever a specific button constituting the selection button unit 21 is pressed in sequence, the heating temperature is set in the order of low temperature, medium temperature, medium temperature, high temperature, ultra high temperature, low temperature, and so on. This is possible and the selected temperature range is to be confirmed by the LED lighting on the display (25).

In addition, by pressing a specific button constituting the selection button unit 21 is adjusted for the interruption time of the power, the supply time and the interruption time of the power applied to the heating pad 30 is 1 ~ 40 If freely adjusted within the range of minutes to have the temperature set in the temperature setting section 23 and the process of applying power and cut off set in the time setting section 22 is to be repeated continuously.

In particular, the control of the heating temperature in the temperature setting unit 23 as described above is made by varying the amount of current applied to the heating pad 30 in accordance with the operation of the selection button unit 21, the heating pad 30 ), When the overheat cut-off part 33 by bimetal is additionally formed, the power is automatically cut off due to the physical properties of the bimetal when overheated beyond a desired set temperature range, so that a fire or burn may be caused by overheating. You can prevent accidents.

In particular, in operating the heating pad 30 made of a single or multiple heating elements 40 by using the rechargeable power supply unit 26 by the low-voltage DC rechargeable battery, the control operation of the rechargeable power supply unit 26 by the storage battery and the control operation. For various electronic circuits, it is preferable to adopt a structure in which a rechargeable battery and an electronic circuit are fixed together in one case, and a circuit is formed on a board to allow a temperature to be adjusted in multiple stages. Press the switch by (21) once, low temperature, twice press the middle temperature, three times the middle temperature, four times the high temperature, five times the ultra high temperature. Can also be cut off and flowed at regular intervals (e.g. after the first 20 minutes However, then repeat the energizing, blocking at 10 minute intervals beginning continuously), creating a terminal that can be connected to the rechargeable battery built-in the substrate then the battery case.

The rechargeable battery constituting the rechargeable power supply unit 26 should be replaceable, and the inside of the case may include a substrate designed with the above temperature controller function. It would be desirable to make.

In addition, the outside of the case to create a power groove that can be used by plugging in the power cord connected to the waterproof jack is pulled out of the heating pad (30), and can also be used by plugging in the AC adapter (27) used to charge the rechargeable battery, If you plug the adapter jack into the above power groove without removing the rechargeable battery, it will be charged immediately.If you plug in the waterproof jack, it will make a structure to supply the current to the heat generating part. Control temperature and attach power on / off switch on the outside of the case to turn off the power

Accordingly, the rechargeable power supply unit and the time and temperature control unit are integrally embedded in one case and separately separated from each other to form a heating pad 30 in which the heating element 40 and the overheat cutoff unit 33 are combined. Power supply groove (connector) attached to the (20) to be able to use the power jack attached to the heating pad 30 will be the most ideal form.

The heating pad 30 that generates power by being supplied by the controller 20 is manufactured by applying various types of heating means known in the art, such as a flexible heating mesh or a flexible heating wire, to the heating means as described above. As shown in FIG. 6, the heat generating pad 30 is formed by the heat storage carrier 31 at the uppermost side, the heat generating body 40 at the lower side thereof, and the heat insulating body 32 at the bottom thereof, so that they are sewn together. It is adhesively fixed.

At this time, the heat storage transfer material 31 is made by adding a cotton fabric to the upper part of the fabric made of Techno thermo, and the Techno thermo is a combination of a light energy absorbing heat generating yarn and a W-section yarn. It is a new material that realizes higher heat retention by manufacturing, and it has better heat retention than ordinary fabrics even in cloudy weather, where light energy is not active, and it prevents heat from leaking to the outside as it is a material with low thermal conductivity compared to conventional heat storage function yarns. There is a fabric. Accordingly, the heat storage transfer member 31 prevents heat from leaking by the heating element 40, thereby minimizing heat loss due to heat dissipation, and the cotton fabric has a soft touch, thereby making it more comfortable.

In addition, the insulator 32 is made of fiberglass silica pads, and fiberglass silica pads are commonly referred to as space suit materials, and are endured in thousands of degrees Celsius. It is widely known as a material having a function to completely block the heat conduction, the heat insulator 32 prevents the heat from the heat generating element 40 in an unnecessary direction and at the same time intact only in the direction that requires the heat. It can be delivered so that it is possible to produce more efficient heat generation characteristics by blocking the release of unnecessary heat.

The flexible heating pad 30 made as described above is very effective because the heat generating action of the heating element 40 located between the heat storage carrier 31 and the heat insulator 32 can be evenly and effectively diffused and conducted.

Here, for the purpose of improving elasticity, durability and chemical resistance, insulation, and waterproofness of the heating pad 30, as shown in FIGS. 7 and 8, the upper and lower surfaces of the heating element 40 are separately provided. As the heat generating pads 30 are formed by attaching and forming the surface sheets 45 and 45 ', the heating pads 30 are elastic or durable due to the material properties of the surface sheets 45 and 45'. Various physical properties such as waterproofness or insulation are greatly improved.

In more detail, the heating element 40 having the power line is placed on the first skin sheet 45, and the second surface sheet 45 ′ is sequentially placed on the upper surface of the heating element 40. Then, when the surface sheets 45, 45 'are pressurized by a high-pressure press device, the surface sheets 45, 45' are thermally melted with each other and the surface sheets 45, 45 'are divided. At the same time, the heating pad 30 is completed while the heating element 40 is embedded with the power line between the surface sheets 45 and 45 '.

In this case, when a separate adhesive sheet 46, such as a plastic sheet, is inserted between the surface sheets 45 and 45 'to be heat-compressed, the vinyl sheet adhesive sheet 46 has a very low melting point. It has the advantage that can be used for the surface sheets 45, 45 'of various materials having a higher melting point than the vinyl paper.

That is, when the surface sheets 45 and 45 'are used as nonwoven fabrics or woven papers, the surface sheets 45 and 45' made of nonwoven fabrics and woven papers, as well as the soft touch, of the heating pad 30 are used. It is to improve durability without affecting ductility, and when the surface sheets 45, 45 'are used as waterproof fabrics such as neoprene, the entire heating pad 30 is waterproof. It is possible to prevent a short circuit or an electric shock to the heating pad.

In addition, when the surface sheets 45 and 45 ′ are used as spandex having excellent elasticity, the heating pad 30 may have more elasticity, so that the heating sheet 30 may have a greater elasticity. Continuous and safe use can be made without difficulty from various pressures and loads applied.

The heating element 40 for constituting the heating pad 30 may be made of a conductive mesh 41 in the form of a mesh or the flexible heating wire 44 in the form of a wire, and the conductive mesh 41 may be used. In case of), it can be said that it has flexibility for a large area, and in the case of the flexible heating wire 44, it has an advantage that it can be effectively used in various fields due to its excellent elasticity.

That is, the heating element 40 is the entire surface of the core material 41a woven in the form of weft and warp or string and blade using fiber yarn or soft synthetic resin yarn or rubber yarn as shown in Figs. 9 and 10. A conductive coating layer 41b formed of a conductive composition on the surface, and an insulating layer 41c formed by coating or coating an insulator made of liquid silicone rubber or the like on the surface of the conductive coating layer 41b. ), The conductive coating layer 41b made of a conductive composition generates heat by applying power to the conductive mesh 41 so that the overall temperature rise of the heating element 40 is achieved.

In particular, the core 41a woven as described above is impregnated in the conductive composition or the conductive composition is coated or coated on the surface of the core 41a to form the coating layer 41b by the conductive composition. Here, the conductive composition is made by mixing the liquid silicone rubber and the conductive carbon black. Preferably, the liquid silicone rubber and the conductive carbon black may be ideally mixed in a mass ratio of 100: 1 to 15.

In this way, the conductive mesh 41 on which the core 41a, the coating layer 41b, and the insulating layer 41c are formed is connected to a power line for applying power to the coating layer 41b to complete the heating element 40. Could be.

At this time, the power supply line is provided at regular intervals between the main power supply lines 42 and 42 'which are arranged side by side at both ends of the conductive mesh 41 and these main power supply lines 42 and 42'. Comprising an auxiliary power line 43, 43 'is arranged, the main power line 42, 42' and the auxiliary power line 43, 43 'is a coating layer 41b and the conductive composition Since the electrical connection state is maintained, when the power is applied to these main power lines 42 and 42 'and the auxiliary power lines 43 and 43', the coating layer 41b becomes energized and the coating layer 41b. The self acts as a resistor to perform a heat generating action by the resistance.

Particularly, the auxiliary power lines 43 and 43 'are applicable to various numbers according to the width or length of the conductive mesh 41. In the case where the conductive mesh 41 is wide or long, the auxiliary power source is long. The number of lines 43 and 43 'should be increased proportionally so that the distance between power lines is not too far.

Therefore, the flexible heating element 40 can be manufactured by adding or subtracting the number of the auxiliary power lines 43 and 43 'as described above, so that the resistance value of the place where the actual power is supplied even if the length of the heating element is long or wide is increased. It is kept substantially constant so that voltage drop does not occur at all, and current distribution is uniform, thereby preventing local heating or local low temperature phenomenon.

In addition, the main power lines 42 and 42 'and the auxiliary power lines 43 and 43' are to be connected so that powers of different polarities are sequentially applied alternately, and the polarities of neighboring power lines are the same. In this case, since energization will not be made, these main power lines 42, 42 'and auxiliary power lines 43, 43' are positive or negative so that power of different polarities can be applied between adjacent power lines. When the separate connection to the power supply unit of the heating element 40 is applied evenly and stable heat is made.

In addition, when a heating element is to be made according to a specific voltage, the grid gap of the conductive mesh 41 is adjusted according to the voltage to be used to adjust the installation interval of the auxiliary power lines 43 and 43 '. . In other words, in order to make a low voltage heating element, the voltage drop occurs at a small resistance value due to the low supply voltage, and the mesh size of the mesh is made very small, and a plurality of auxiliary power lines 43, 43 'are installed. However, while densifying the gap and applying a voltage to be used, the insulating layer 41c (which may be formed by forming an insulating layer by the liquid silicone rubber on the surface of the coating layer or by overlaying a separate coating material, if necessary) is destroyed. It is possible to create the optimal grid size and spacing between the power supply lines to produce the best heat without the need to do so.

On the other hand, in order to make a high-voltage heating mesh, the grid size of the conductive mesh 41 may be increased and the spacing of the auxiliary power lines 43 and 43 'may be increased. At this time, the grid size of the mesh should be adjusted so that the insulation between the horizontal and vertical lines between the grids of the mesh does not break due to the occurrence of corona. The spacing of the supply lines can also be made wider at the maximum distance where no voltage drop occurs.

In addition, in the construction of the heating element 40, as the main heating means can be produced using the flexible heating wire 44 as shown in Figs. 11 and 12, the flexible heating wire 44 is a stretchable heat conduction In the state where the conductive coil wire 44b made of carbon fiber yarn is wound on the surface of the flexible core material 44a made of silicone resin, thermal conductivity is also applied to the surfaces of the flexible core material 44a and the conductive coil wire 44b. The cover is formed by covering and forming a stretchable insulating material 44c made of stretchable silicone resin. Accordingly, when power is applied to the conductive coil wire 44b of the flexible heating wire 44, the conductive coil wire 44b serves as a resistor to generate heat, and eventually the temperature rise of the flexible heating wire 44 is increased. Of course, the heat generation to the entire heating element 40 through the heat conduction will occur.

In this way, a separate power line for applying power to the conductive coil wire 44b is connected to the flexible heating wire 44 formed by the flexible core material 44a, the conductive coil wire 44b, and the elastic insulating material 44c. As it will be able to complete the desired heating element (40).

At this time, the power supply line is provided at regular intervals between the main power supply lines 42 and 42 'which are arranged side by side at both ends of the stretchable heating line 44 and these main power supply lines 42 and 42'. The main power lines 42 and 42 'and the auxiliary power lines 43 and 43' are electrically connected to the conductive coating line 44b. Since the connection state is maintained, when power is applied to the main power lines 42 and 42 'and the auxiliary power lines 43 and 43', the conductive coil lines 44b become energized and the conductive coil lines ( 44b) itself is to act as a resistor to perform the exothermic action by the resistance.

Particularly, the auxiliary power lines 43 and 43 'may be applied to various numbers according to the total length of the flexible heating line 44. When the length of the flexible heating line 44 is long, the auxiliary power line 43 43 ') should be increased proportionally so that the distance between power lines is not too far apart.

Therefore, the heating element 40 can be manufactured by adding or subtracting the number of the auxiliary power lines 43 and 43 'as described above, so that the resistance value of the actual power supply is substantially constant, no matter how long the heating element is. Not only does the voltage drop occur at all, but the current distribution is uniform, thereby preventing local heating or local low temperature.

In addition, the main power lines 42 and 42 'and the auxiliary power lines 43 and 43' are to be connected so that powers of different polarities are sequentially applied alternately, and the polarities of neighboring power lines are the same. In this case, since energization will not occur, the main power lines 42 and 42 'and the auxiliary power lines 43 and 43' are positive or negative so that power of different polarities can be applied between adjacent power lines. When the separate connection to the power supply of the stretchable heating element 40 is applied evenly and stably generated heat from the applied power.

In addition, when the heating element is to be made according to a specific voltage, the length of the flexible heating wire 44 may be adjusted according to the voltage to be used to adjust the installation interval of the auxiliary power lines 43 and 43 'installed therein. That is, in order to make a low voltage heating element, a plurality of auxiliary power lines 43 and 43 'are provided for the flexible heating line 44, considering that a voltage drop occurs at a small resistance value due to a low supply voltage. By narrowing the spacing and applying the voltage to be used, it is necessary to create an optimum spacing of the power supply line that produces the best heat without destroying the insulation.

On the other hand, in order to make a high voltage heating element, the spacing of the auxiliary power lines 43 and 43 'with respect to the entire length of the flexible heating line 44 may be arranged. At this time, the spacing of the auxiliary power lines 43, 43 'is to be made wider to the maximum distance that the voltage drop does not occur.

In addition, in the construction of the heating element 40, the main heating means may be manufactured using the conductive twisted yarn 47 as shown in Figs. 13 and 14, wherein the conductive twisted yarn 47 is non-combustible and The conductive layer 47b was formed by coating a conductive composition made of a mixture of liquid silicone rubber and carbon black on the surface of the screening 47a formed by joining several strands of glass fibers having durability and not absorbing moisture. In this state, the insulating layer 47c made of stretchable silicone resin is coated on the surface of the conductive layer 47b.

When the conductive twisted yarn 47 is applied with power from both ends, heat is generated while the conductive layer 47b plays a role of a resistor, and eventually, heat from the conductive layer 47b is insulated from the insulating layer 47c. While conducting through the heating element 40 is to perform the heating action.

In this way, the conductive twisted yarn 47 made of the screening 47a made of glass fiber, the conductive layer 47b made of carbon black, and the insulating layer 47c made of silicone rubber is woven together in the form of a weft and an inclined yarn. In this case, the method of weaving the net by the conductive twisted yarn 47 is a conductive cross that crosses each other by combining a plain weave and a plain weave, not tricot or knitted. The point of contact between the twisted yarns 47 is to be naturally produced. Accordingly, as the power is applied to the conductive twisted yarn 47 as described above, the heating element 40 by the conductive twisted yarn 47 is to perform a heat action.

At this time, as a means for applying power to the conductive twisted yarn 47, main power lines 42 (42 ') and these main power lines (parallel) disposed at both ends of the conductive twisted yarn 47 in parallel with each other ( 42 and 42 ', which are composed of auxiliary power lines 43 and 43' which are arranged at regular intervals between the main power lines 42 and 42 'and the auxiliary power line 43 ( 43 'maintains electrical connection with the conductive layer 47b of the conductive twisted yarn 47, so that power is supplied to these main power lines 42, 42' and auxiliary power lines 43, 43 '. In this case, the conductive twisted yarn 47 is in an energized state and at the same time, the conductive layer 47b itself performs a role of a resistor to perform a heat generating action by resistance.

Here, the main power lines 42 and 42 'and the auxiliary power lines 43 and 43' may be suitable for supplying a stable power supply using a braided electrode formed by braiding a conductive wire. In addition, as a method of connecting or fixing the main power supply lines 42 and 42 'and the auxiliary power supply lines 43 and 43' by the conductive twisted yarn 47, they are connected to each other using separate weaving yarns. It would be more preferable to be able to maintain a stable ground state without being separated or separated.

In particular, the auxiliary power lines 43, 43 'can be applied in various numbers according to the total length of the conductive twisted yarn 47, when the length of the conductive twisted yarn 47 is long or wide The number of auxiliary power lines 43 and 43 'should be increased proportionally so that the distance between power lines is not too far.

Therefore, the heating element 40 can be manufactured by adding or subtracting the number of the auxiliary power lines 43 and 43 'as described above, so that the resistance value of the actual power supply is substantially constant, no matter how long the heating element is. Not only does the voltage drop occur at all, but the current distribution is uniform, thereby preventing local heating or local low temperature.

The main power lines 42 and 42 'and the auxiliary power lines 43 and 43' applied to the heating element made of the conductive twisted yarn 47 are connected so that power of different polarities is alternately sequentially applied. If the polarities of the power lines adjacent to each other are the same, the energization will not occur, so that the main power lines 42 and 42 'and the auxiliary power supply are applied so that powers of different polarities can be applied between power lines adjacent to each other. When the lines 43 and 43 'are respectively connected to the power source of the positive electrode or the negative electrode, the heating element 40 is evenly and stably generated from the applied power source.

In addition, when the heating element is to be made according to a specific voltage, the length of the conductive twisted yarn 47 is adjusted according to the voltage to be used to adjust the installation interval of the auxiliary power lines 43 and 43 '. . That is, in order to make a low voltage heating element, a plurality of auxiliary power lines 43 and 43 'are provided for the conductive twisted yarn 47 in consideration of the fact that the voltage drop occurs at a small resistance value due to the low supply voltage. By narrowing the gap and applying the voltage to be used, it is necessary to create an optimum gap of the power supply line that generates the best heat without destroying the insulation.

On the other hand, in order to make a high voltage heating element, it is possible to arrange a wider interval of the auxiliary power lines 43 and 43 'with respect to the entire length of the conductive twisted yarn 47. At this time, the spacing of the auxiliary power lines 43, 43 'is to be made wider to the maximum distance that the voltage drop does not occur.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the present invention as defined by the appended claims. Examples should be understood.

1 is an overall configuration diagram of a heating pad according to the present invention

Figure 2 is a state wearing a heating pad according to the present invention

Figure 3 is another embodiment of the heating pad according to the present invention

4 is a wearing state of the heating pad according to FIG.

5 is a controller configuration and connection diagram of a heating pad according to the present invention

6 is another embodiment of the heating element of the heating pad according to the present invention;

7 is another embodiment of the heating element of the heating pad according to the present invention;

8 is an enlarged view of a part of the heating element according to FIG. 7;

9 is a block diagram of an internal heating element of the heating pad according to the present invention;

FIG. 10 is an enlarged view of a portion “A” of the heating mesh of FIG. 9; FIG.

11 is another configuration diagram of the internal heating element of the heating pad according to the present invention;

12 is an enlarged view of a portion “A” of the elastic heating wire according to FIG. 11;

Figure 13 is another configuration of the internal heating element of the heating pad according to the present invention

FIG. 14 is an enlarged view of a portion “A” of the conductive twisted yarn of FIG. 13; FIG.

Explanation of symbols on the main parts of the drawings

10,10 ': Fastener 11,11': Stretch band

20: controller 21: selection button

22: time setting section 23: temperature setting section

24: central processing unit 25: display unit

26: rechargeable power supply unit 27: AC adapter

30: heating pad 31: heat storage carrier

32: insulator 33: overheat cut off

40: heating element 41: conductive mesh

41a: core material 41b: conductive coating layer

41c: Insulation layer 42,42 ': Main power line

43,43 ': Auxiliary power cable 44: Flexible heating wire

44a: flexible core material 44b: conductive coil wire

44c: elastic insulation coating

45,45 ': Surface sheet 46: Adhesive sheet

47: conductive twisted yarn 47a: screening

47b: conductive layer 47c: insulating layer

Claims (18)

Fastening pads 10 and 10 'corresponding to both ends of the rectangular heating pad 30 are formed to be coupled to each other, and the heating pad 30 is connected to the controller 20 having the rechargeable power supply unit 26. Wearable heating pads using a flexible heating element, characterized in that the fastener (10) (10 ') using the heating pad 30 is configured to be worn on the human body. The method of claim 1, The heating pad 30 is formed by attaching and detaching separate elastic bands 11 and 11 'that are detachable using fasteners 10 and 10' formed at both ends, and the elastic bands 11 and 11 '. Both fasteners 10 and 10 'corresponding to each other are formed on both ends of the joint, and the heating pads 30 are wound around the body and the waist by the elastic bands 11 and 11'. Wearable heating pad using a flexible heating element, characterized in that configured to be. The method of claim 1, Fastener (10) (10 '), wearable heating pads using a flexible heating element, characterized in that consisting of one selected from the Velcro tape, hook, button. The method of claim 1, The controller 20 has a time setting unit 22 and a temperature setting unit 23 which are variable by the selection button unit 21, and a central processing unit connected to the time setting unit 22 and the temperature setting unit 23. 24 has a set temperature and intermittent time to supply power to the heating pad 30, The display unit 25 connected to the central processing unit 24 allows the power to be applied, the set operating time, the set temperature, the remaining power, the voltage for the power source, and the state of charge. The rechargeable power supply unit 26 is a wearable heating pad using a flexible heating element, characterized in that configured to be supplied to the heating pad 30 through the central processing unit 24 by charging the power supplied from the AC adapter (27). The method of claim 1, The heating pad 30 is a wearable heating pad using a flexible heating element, characterized in that the heating element 40 is built between the top and bottom surface sheets 45, 45 '. The method of claim 5, The surface sheets 45 and 45 'are fused to each other by inserting the adhesive sheet 46 between the surface sheets 45 and 45' and fusion of the adhesive sheet 46 by heat pressing. Wearable heating pad using a flexible heating element characterized in that. The method of claim 5, Surface sheet 45 (45 ') is a wearable heating pad using a flexible heating element, characterized in that consisting of one selected from neoprene (neoprene) or spandex (spandex). The method of claim 1, The heating pad 30 is a wearable heating pad using a flexible heating element, characterized in that the heating element 40 is built between the upper heat storage transfer member 31 and the lower heat insulator 32. The method of claim 8, The heat accumulator 31 is a wearable heating pad using a flexible heating element, characterized in that formed by forming a cotton fabric paper close to the upper surface of the Techno thermo (Techno thermo) fabric. The method of claim 8, The insulator 32 is a wearable heating pad using a flexible heating element, characterized in that the fiberglass silica pad (fiber glass silica pad). The method of claim 1, The heating pad 30 has a heat generating body 40 embedded between the top and bottom surface sheets 45 and 45 ′, and a heat storage carrier 31 is formed on the top surface of the top surface sheet 45. Wearable heating pads using a flexible heating element, characterized in that the bottom surface of the lower surface sheet 45 'is formed with a heat insulator (32). The method according to any one of claims 5, 8 and 11, The heating element 40 is equally disposed between the main power lines 42 and 42 'and the main power lines 42 and 42' which are arranged side by side at both ends of the conductive mesh 41 in a lattice form. Comprised of auxiliary power lines 43, 43 'arranged at intervals, the main power lines 42, 42' and the auxiliary power lines 43, 43 'are connected so that different polarities are sequentially applied alternately. Wearable heating pad using a flexible heating element, characterized in that configured by. The method of claim 12, The conductive mesh 41 forms a coating layer 41b made of a conductive composition in which liquid silicon rubber and carbon black are mixed on the surface of the core material 41a in the form of a lattice, and an insulating layer (on the surface of the coating layer 41b). Wearable heating pad using a flexible heating element, characterized in that formed by forming 41c). The method according to any one of claims 5, 8 and 11, The heating element 40 is disposed between the main power lines 42 and 42 'and the main power lines 42 and 42' which are arranged in parallel with each other at both ends of the flexible heating line 44 which are arranged side by side. Is composed of auxiliary power lines 43, 43 'evenly arranged in connection with the flexible heating line 41, and alternately with the main power lines 42, 42' and the auxiliary power lines 43, 43 '. Wearable heating pad using a flexible heating element, characterized in that configured to connect so that different polarities are sequentially applied. 15. The method of claim 14, The stretchable heating wire 44 winds and forms the conductive coil wire 44b on the surface of the stretchable core material 44a, and covers the stretchable insulation material 44c on the outer surface of the stretchable core material 44a and the conductive coil wire 44b. Wearable heating pad using a flexible heating element, characterized in that formed. The method according to any one of claims 5, 8 and 11, The heating element 40 is formed by weaving the conductive twisted yarns 47 in a warp shape with the weft yarns, and on both sides of the woven conductive twisted yarns 47 side by side to connect the ends of the conductive twisted yarns 47 to each other. The auxiliary power supply line 43 disposed at equal intervals to form a contact with the conductive twisted yarn 47 between the main power supply lines 42 and 42 'and the main power supply lines 42 and 42'. Comprising a 43 ', the flexible heating element characterized in that it is configured to connect so that different polarities are sequentially applied to the main power line 42, 42' and the auxiliary power line (43, 43 ') alternately. Wearable heating pad. The method of claim 16, The conductive twisted yarn 47 forms a conductive layer 47b made of a conductive composition in which liquid silicone rubber and carbon black are mixed on the surface of the screening 47a in which glass fibers are joined, and the surface of the conductive layer 47b. Wearable heating pad using a flexible heating element, characterized in that formed by forming an insulating layer (47c) by the liquid silicone rubber. The method according to any one of claims 5, 8 and 11, Wearable heating pad using a flexible heating element, characterized in that the heating element 40 is configured by mounting the overheat blocking portion 33 by bimetal.

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