KR101558514B1 - Heating blanket - Google Patents

Abstract

The present invention relates to a highly flexible heating blanket using a heat emitting body formed by weaving carbon fibers and hemp fibers. The heating blanket includes: i) an outer skin which has a hollow space on the inside and is open at one lateral side; ii) an inner skin which comes in contact with the hollow space and has two or more storage units; and iii) a flexible heating pad stored in the storage units. The heating pad includes: i) a pair of metal electrodes which are connected to an external power source to receive power and is extended in a first direction; ii) multiple conductive complex wefts which are extended in a second direction intersecting the first direction and interconnects the pair of metal electrodes; and iii) multiple single-type warps which are extended in a first direction and intersect the weft threads to be woven together; and iv) a cover member which surrounds the metal electrodes, conductive complex weft and single-type warps. The difference between the recovery rate of the wefts and that of the warps is 10% or lower. The storage units are arranged to be in parallel and be spaced apart from each other. The storage units include an inlet formed on an edge and are elongated. The heating pad is inserted through the inlet.

Description

{HEATING BLANKET}

The present invention relates to a heating blanket. More particularly, the present invention relates to a heating blanket using a heating element obtained by weaving carbon fibers and hemp fibers.

Fever blanket is used in various places such as outdoor and home where heat is needed. The heating blanket is a heat source and uses heating wires such as nichrome and copper. However, when using nichrome and copper heating wire, short circuit may cause fire.

To reduce the risk of fire, a heating blanket using an insulating member, for example a urethane heating blanket, may be used. However, urethane heating blankets have low flexibility, so heating lines may be cut or short-circuited. In addition, the urethane heating blanket is weak to moisture and short-circuiting may occur.

It is intended to provide a flexible heating blank using a heating element woven carbon fiber and hemp fiber.

A heating blanket according to an embodiment of the present invention includes: i) a casing having a hollow space formed therein and having one side opened; ii) an inner casing contacting the hollow space and having at least two receiving portions formed therein; and iii) And includes a flexible heating pad to be accommodated. The heating pad comprises: i) a pair of metal electrodes connected to an external power source and supplied with power and extending in a first direction; ii) a pair of metal electrodes extending long in a second direction intersecting the first direction, Iii) a plurality of single warp yarns stretched in a first direction and interwoven with the weft yarns and woven together, and iv) a plurality of conductive composite weft yarns extending from the plurality of conductive composite weft yarns, And a cover member surrounding the single warp yarns. The difference between the elastic recovery rate of the weft yarns and the elasticity recovery rate of the warp yarns is 10% or less, the receiving portions are formed to be spaced apart from each other, and the receiving portions are formed at the edges thereof to include the long extended inlets, do.

The average elastic recovery of the weft yarns may be between 55% and 65%. One or more warp yarns of the single warp yarns may include hemp and the hemp may comprise one or more fibers selected from the group consisting of flax, ramie, hemp and jute. The difference between the elastic recovery rate of the warp yarns and the elastic recovery rate of the warp yarns may be less than 5%. The single warp yarns may be formed spaced apart from each other, and the spacing between single warp yarns may be between 1 cm and 1.5 cm.

The plurality of electrically conductive composite weft yarns may comprise i) a core comprising fibers, and ii) a carbon layer coated on the outer surface of the core. The thickness of the carbon layer may be from 0.56 mm to 0.58 mm. And a bonding portion for interconnecting the plurality of conductive composite weft yarns and the pair of metal electrodes, and the bonding portion may include carbon, a waterproofing agent, and urethane. The receiving spaces in the respective receiving portions can be opened through the inlet port toward the mutually moving directions.

When the opening direction of the inlet is the first direction or the second direction and the opening direction of the inlet is the first direction, the length of the receiving portion in the first direction is larger than the length of the receiving portion in the second direction, In the case of the second direction, the length of the accommodating portion in the second direction may be larger than the length of the accommodating portion in the first direction. When the length of the accommodating portion in the second direction is larger than the length of the accommodating portion in the first direction, the accommodating portions may be spaced apart from each other and three or more of them may be formed side by side. The heat storage pad may further include a power supply line interconnecting the metal electrode and the external power supply, and the power supply line may be drawn out through the outflow port. .

The envelope comprises i) a first edge portion having a first zipper portion formed therein, ii) a second edge portion having a second zipper portion adapted to mate with the first zipper portion, and iii) a second edge portion having one end of the first zipper portion and one end of the second zipper portion And a zipper handle installed so that the envelope is folded in half and the first zipper part and the second zipper part are coupled to each other.

A heating blanket according to another embodiment of the present invention includes: i) a cover formed with an inner space and opened at one side; ii) a thermal insulation inserted into the inner space; and iii) a flexible thermal pad disposed between the cover and the thermal insulation do. The heating pad comprises: i) a pair of metal electrodes connected to an external power source and supplied with power and extending in a first direction; ii) a pair of metal electrodes extending long in a second direction intersecting the first direction, Iii) a plurality of single warp yarns stretched in a first direction and interwoven with the weft yarns and woven together, and iv) a plurality of conductive composite weft yarns extending from the plurality of conductive composite weft yarns, And a cover member surrounding the single warp yarns and including a zipper portion formed at the edge thereof. The difference between the elastic recovery of the weft yarns and the recovery rate of the warps may be less than 10%.

The thermal insulation material may include: i) another zipper portion formed to extend along the second direction and corresponding to the zipper portion, and ii) a zipper portion coupled to another zipper portion and moving in opposite directions along another zipper portion, And a pair of zipper handles adapted to interconnect other zipper portions. The cover is formed to extend along the second direction and further includes a cover zipper corresponding to the zipper portion, and the cover zipper can be adapted to be mutually coupled with the zipper portion.

It is possible to provide a heat-resistant blanket which can be used without breakdown and continuously used. Therefore, it can be applied to a sleeping bag used for sleeping in the outdoors, thereby providing a warm sleeping place even in the cold. In addition, the heating element can be easily detached, and the position of the power source connected to the heating element can be positioned at a desired position by the user in the up, down, left, and right directions.

1 is a schematic view showing a heating blanket according to a first embodiment of the present invention.
2 is a view schematically showing a state in which the heating blanket of FIG. 1 is unfolded.
FIG. 3 is a schematic view illustrating a state where the heating blanket of FIG. 1 is connected to a power supply unit.
Fig. 4 is a schematic perspective view partially showing the heating pad of Fig. 3; Fig.
5 is a schematic view showing a heating blanket according to a second embodiment of the present invention.
6 is a schematic view showing a heating blanket according to a third embodiment of the present invention.
7 is a schematic view showing a heating blanket according to a fourth embodiment of the present invention.
8 is a schematic view showing a heating blanket according to a fifth embodiment of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

The term "thermal blanket ", as used below, is interpreted to mean any object that a person laid or covers for thermal insulation. Thus, a heating blanket is interpreted to include all objects such as comforters, blankets, covers, sleeping bags, mattresses, and mattresses used to generate heat.

The term "composite type" used below means a state in which two or more materials distributed in a commercial are combined. And the term "single type" means a state consisting of a single material that is commercially distributed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

1 schematically shows a heating blanket 100 according to a first embodiment of the present invention. The structure of the heating blanket 100 of FIG. 1 is merely for illustrating the present invention, and the present invention is not limited thereto. Therefore, the structure of the heating blanket 100 can be modified to other forms.

1, the heating blanket 100 includes a shell 10, an inner skin 20, and a flexible heating pad 30. As shown in Fig. In addition, the heating blanket 100 may further include other components as needed.

Since the heating blanket 100 of FIG. 1 has the shape of a sleeping bag clogged behind in the y-axis direction, a hollow space is formed in the inside of the shell 10. Since the sheath 10 is subjected to sheathing by using goose hair or the like, it is useful for cold weather. Alternatively, the outer skin 10 may be made of a material such as Gore-Tex having a waterproof function and a water-repellent function so as to be suitable for outdoor activities. The cover 10 may be coated with UV or acrylic to provide a shielding effect.

The envelope 10 includes a first edge portion 101, a second edge portion 103 and a zipper pull 105. One side of the envelope 10 in the y-axis direction is opened to allow human entry. A first zipper 1011 is formed on the first edge portion 101 and a second zipper 1031 is formed on the second edge portion 103. [ Although the zipper pull 105 is shown in FIG. 1, the first zipper 1011 and the second zipper 1031 can be opened and closed by using a zipper, a velcro, . The first zipper part 1011 and the second zipper part 1031 may be connected to the zipper part of another heating blanket to be used in a larger size. Accordingly, the user can use the heating blanket 100 in various ways, from single user to multi user, as needed.

The inner skin (20) is located in contact with the inner hollow space of the outer skin (10). The inner sheet 20 may be formed in layers to increase the warmth of the heating blanket 100. Between the outer skin 10 and the inner skin 20, a thermal insulating material such as cotton may be contained. The receiving portions 201 and 202 may be formed on the surface of the inner sheet 20 and two or more receiving portions 201 and 202 may be formed. The two heating pads 30 are accommodated in the receiving portions 201 and 202, respectively, so that a person using the heating blanket 100 can be warmed. Since the two heating pads 30 are used, the heating blanket 100 can be used for two people by lying on each heating pad 30. The heating pad 30 is electrically connected to the power supply device 40 (shown in Fig. 2). Hereinafter, the internal structure of the heating blanket 100 will be described in more detail with reference to FIG.

Fig. 2 schematically shows a state in which the heating blanket 100 of Fig. 1 is opened. That is, FIG. 2 shows the internal structure of the heating blanket 100 with the outer covering 10 removed. 2 shows a connection state of the heating blanket 100 with the power line 401. In Fig.

As shown in Fig. 2, receiving portions 201 and 202 are formed in the inner film 20. As shown in Fig. The receiving portions 201 and 202 are elongated in a direction in which the inner film 20 extends in a long direction, that is, in the y-axis direction. The receptacles 201 and 202 form inlets 2011 and 2021 at the side edges. The inlets 2011 and 2021 extend in the y-axis direction, and the lengths of the receiving portions 201 and 202 in the y-axis direction are longer than those in the x-axis direction.

If the inlets 2011 and 2021 are formed along the upper or lower edge of the receivers 201 and 202, that is, along the x axis direction, it is difficult to store the heat generating pads 30 in the receivers 201 and 202 . That is, in this case, since the user has to push the heating pad 30 for a long time in order to accommodate the heating pad 30 in the state where the heating pad 30 is housed in the receiving portions 201 and 202 in a well-extended state, the heating pad 30 is cried or bent It may not be inserted. Therefore, as shown in Fig. 2, it is preferable that the storage spaces in the storage units 201 and 202 are opened through the inlets 2011 and 2021 in directions away from each other.

The storage portions 201 and 202 may include a storage fixture (not shown) connected to the inner skin 20 to stably store the heating pad 30 therein. In addition, a device accommodating space (not shown) for accommodating the power supply device 40 and the temperature control device 50 may be provided on the inner surface 20.

For example, when the heating blanket 100 is used as a camping sleeping bag, the heating pad 30 can be easily pulled out from the receiving portions 201 and 202 before the outer covering 10 or the inner covering 20 is dirty and washed . That is, the heating pad 30 is separated from the heating blanket 100 so that only the heating blanket 100 is washed to prevent the heating pad 30 from being wetted and damaged.

As shown in the enlargement circle in Fig. 2, the storage units 201 and 202 are formed with a draw-out opening 2013 spaced apart from the inlets 2011 and 2021, respectively. The power supply line 401 connected to the heating pad 30 is drawn out of the storage unit 201 through the outlet 2013. [ Accordingly, although the power supply line 401 often touches the storage units 201 and 202 and the storage units 201 and 202 can be torn off, the edges are subjected to a beveling treatment and the movement thereof is restricted by the strong outlets 2013, The parts 201 and 202 are not torn and their durability can be maintained well. Further, the outflow port 2013 is formed in a slit shape so as to prevent the passage of outside air. Therefore, the space for the entrance of the draft into the outlet 2013 is minimized, thereby maximizing the warmth of the heating blanket. Meanwhile, the heating pad 30 can be stably connected to the power supply unit 40 through the power supply line 401 to receive power.

FIG. 3 schematically shows a state where the heating blanket 100 according to the first embodiment of the present invention is connected to the power supply device 40 and the temperature control device 50. Hereinafter, the heating blanket 100 is connected to the power supply unit 40 and the temperature control unit 50 to generate the heating pad 30 will be described in more detail with reference to FIG.

3, the metal electrode 301 of the heat generating pad 30 is connected to the power supply device 40 and the temperature control device 50 through the power supply line 401. The temperature sensor 501 detects the temperature of the heating pad 30 and transmits the sensed temperature to the temperature controller 50. [ The temperature of the measured heating pad 30 is displayed on the temperature control device 50. The temperature control device 50 allows the user to easily use the heating blanket 100 (shown in Fig. 2), including a timer function and a heat reservation function. On the other hand, the power supply line 401 can be housed in a device accommodation space (not shown) formed in the inner film 20 (shown in Fig. 2).

The power supply device 40 supplies power required for generating heat of the heat generating pad 30. [ The power supply device 40 can be plugged into an outlet or the like of a house or operated with a portable battery or the like. In this case, the heating blanket 100 can also be used in the outdoor. Hereinafter, the structure of the heating pad 30 of FIG. 3 will be described in more detail with reference to FIG.

Fig. 4 partially shows the heating pad 30 of Fig. 3, and the enlargement circle of Fig. 4 shows enlarged conductive hybrid type wefts 303. Fig. The structure of the heating pad 30 of FIG. 4 is only for illustrating the present invention, and the present invention is not limited thereto. Therefore, the structure of the heat generating pad 30 can be modified in other forms.

4, the heating pad 30 includes a pair of metal electrodes 301, wefts 303, warp yarns 305, and a bonding portion 309. As shown in Fig. The metal electrode 301 is electrically connected to the power supply unit 40 (shown in FIG. 3) to apply electric power to the wefts 303.

The pair of metal electrodes 301 are elongated in the y-axis direction. The pair of metal electrodes 301 may be made of a material such as copper or nickel. The metal electrodes 301 may be formed in the form of a thin film or a rod.

The weft yarns 303 are elongated in the x-axis direction which is a direction intersecting with the direction in which the metal electrode 301 extends. 4, the weft yarns 303 include a core 3031 including fibers and a carbon layer 3033. [ Cotton yarn or the like can be used as the material for the fiber. The carbon layer 3033 is coated on the outer surface of the core 3031. In this case, the thickness of the carbon layer 3033 may be 0.5 mm to 0.6 mm. More preferably, it may be 0.56 mm to 0.58 mm. The carbon layer 3033 can be produced by adding conductive carbon to a thermosetting resin and then extruding it. In this case, the carbon layer 3033 can form a layered lattice in which a hexagonal ring shape of carbon is continuously connected. The weft yarns 303 have a conductivity because they include a carbon layer 3033 on their surfaces. The weft yarns 303 have a composite structure of the carbon layer 3033 and fibers.

Weft yarns 303 are formed between a pair of metal electrodes 301 to interconnect metal electrodes 301. That is, a power source applied to the metal electrodes 301 is supplied to the carbon layer 3033, and the wefts 303 generate heat. The carbon layer 3033 is safe because it has a low risk of fire when compared with a copper wire used as a conventional heating element. In addition, the carbon layer 3033 is strong against moisture and excellent in impact resistance, and is suitable for a heating blanket 100 for outdoor use for camping or the like. The carbon layer 3033 can increase the strength and flexibility of the heating pad 30 by imparting some elasticity to the weft 303.

The warp yarns 305 are elongated in the y-axis direction which intersects the extending direction of the weft yarns 303 and are interwoven with the weft yarns 303 and woven. The heating pad 30 uses an Oxford weaving method in which the weft yarns 303 and the warp yarns 305 cross each other in two strands or a taffet weaving method in which the warp yarns 303 and the warp yarns 305 are woven in a plaid pattern . In this case, since the strength of the heat generating pad 30 is increased, it can withstand a strong external force. On the other hand, the heat generating pad 30 may include a cover member (not shown in the following description). The cover member surrounds the wefts of the weft yarns 303 and the warp yarns 305 and improves the waterproof effect and the water repellent effect through the silicone coating or the like. The warp yarns 305 are made of flax, ramie, hemp or jute. The warp yarns 305 thus have a single structure of one kind or of mutually similar yarns.

If carbon yarn containing carbon layer and general yarn are used for weaving, there is a difference in elastic modulus between carbon yarn and yarn. In this case, the weaving is interrupted, and the weaving body is not flat. Therefore, this phenomenon can be prevented by using hemp. That is, the average resilience percentage of the warp yarns 305 is used to keep the weaving body flat. Here, the average elastic recovery rate of the yarn may be 55% to 65%. If the average elastic recovery rate of the yarn is too large or small, a difference in elastic modulus between the weft yarns 303 and the warp yarns 305 may occur, causing the weft yarns to crawl. Therefore, the average elastic recovery rate of the carbon layer 3033 of the wefts 303 is adjusted to be similar to the average elasticity recovery rate using the above-described average elastic recovery ratio. That is, the difference between the average elastic recovery rate of the warp yarns 303 and the average elastic recovery rate of the warp yarns 305 is adjusted to 10% or less. As a result, since the heating pad 30 is always kept in a flat state without crying, there is no problem in durability even when the heating pad 30 is folded several times. More preferably, the difference between the average elastic recovery rate of the warp yarns 30 and the average elastic recovery rate of the warp yarns 305 can be adjusted to 5% or less.

As shown in FIG. 4, the warp yarns 305 are spaced apart from each other, and the distance d1 between the warp yarns 305 may be 1 cm to 1.5 cm. It is difficult to control the temperature of the heating pad 30 when the spacing of the warp yarns 305 is too small or too large. Therefore, it is preferable to adjust the separation distance d1 to the above-mentioned range. Since the warp yarns 305 containing warp yarns have small chargeability, static electricity hardly occurs. Therefore, when electric power is applied to the heat generating pad 30, the generation of an arc due to static electricity can be prevented in advance. In addition, the warp yarns 305 include ridges and thus have acid resistance, alkali resistance and bacterial resistance. Therefore, it is preferable for use in the heating blanket 100 used mainly in outdoor such as camping.

The bonding portion 309 connects the wefts 303 and the pair of metal electrodes 301 to each other firmly. The bonding portion 309 can be manufactured by mixing a waterproofing agent and a urethane solution or the like with a conductive material such as carbon. In this case, the weight ratio of the waterproofing agent, the urethane solution and the carbon can be set to 500: 10: 1. The stirring time can be set to about 4 hours.

5 schematically shows a heating blanket 200 according to a second embodiment of the present invention. Since the heating blanket 200 of FIG. 5 is the same as the heating blanket 100 of FIG. 2 except for the receiving portions 203, 204, and 205, the same reference numerals are used for the same portions, A detailed description thereof will be omitted.

As shown in FIG. 5, the inner sheet 20 includes the receiving portions 203, 204, and 205, and three or more receiving portions 203, 204, and 205 are formed. Here, the entrance 2023 formed at the edge of the receivers 203, 204, and 205 is elongated in the x-axis direction. Since the length of the storage portions 203, 204 and 205 in the x-axis direction is larger than the length of the storage portions 203, 204 and 205 in the y-axis direction, the heat pad 30 is detached / .

The receiving portions 203, 204, and 205 include a first receiving portion 203, a second receiving portion 204, and a third receiving portion 205. The first storage portion 203 abuts the upper portion of the user's body, the second storage portion 204 abuts the middle portion of the user's body, and the third storage portion 205 abuts the lower portion of the user's body. Here, each of the heat generating pads 30 inserted into the housings 203, 204, and 205 may be separately connected to the power supply unit 40, and the temperatures thereof can be independently controlled. Conventionally, a heating element is embedded in a heating blanket as a single type, so that a user can not select a desired portion and can not generate heat, and the entire heating needs to be performed. However, when the heating blanket 200 is used, the user can store the heating pad 30 in the receiving portions 203, 204, 205 and independently control the temperature thereof. Therefore, unnecessary power consumption can be reduced because only the necessary parts such as the shoulder, back, and legs of the user can be used by raising the temperature.

Although not shown in FIG. 5, the heat generating pad 30 may further include storage portions (not shown) other than the storage portions 203, 204, and 205. Therefore, the heat generating pad 30 can be inserted into another receiving part by adjusting the heat generating position according to a user's desired heat generating position.

6 schematically shows a heating blanket 300 according to a third embodiment of the present invention. Since the heating blanket 300 of FIG. 6 is the same as that of the heating blanket 100 of FIG. 2 except for the folding line 207, the same reference numerals are used for the same parts and the detailed description thereof is omitted for the sake of convenience. do.

As shown in FIG. 6, the heating blanket 300 includes a folding line 207. The folding line 207 is elongated along the y-axis direction in which the receiving portions 201 and 202 are elongated and is formed in the middle between the receiving portion 201 and the receiving portion 202. Since both sides of the heating blanket 300 are formed to be equal to each other with respect to the folding line 207, the heating blanket 300 can be easily folded in half using the folding line 207.

The first edge portion 101 is provided with a first zipper portion 1011 and a zipper pull 105 and the second edge portion 103 is provided with a second zipper portion 1031. Therefore, the user folds the heating blanket 300 in half using the folding line 207, and then the first zipper 1011 and the second zipper 1031 are brought into contact with each other, and the zipper pull 105 is used The first zipper part 1011 and the second zipper part 1031 can be engaged with each other. In this case, since the heating blanket 300 surrounds the user, the heating blanket 300 can be used more warmly for a single user.

7 schematically shows a heating blanket 400 according to a fourth embodiment of the present invention. 7 shows a state in which the heat insulating material 601 and the cover member 70 are joined. Since the structure of the heating blanket 400 of Fig. 7 is similar to that of the heating blanket 100 of Fig. 2, the same reference numerals are used for the same portions, and a detailed description thereof will be omitted for the sake of convenience.

As shown in Fig. 7, the heating blanket 400 includes a cover 60 and a heat insulating material 601. Fig. The cover member 70 is coupled to the heat insulating material 601, and the heat generating pad 30 is inserted into the cover member. A second zipper 703 is formed on the upper edge of the cover member 70, and outlets 2015 are formed on the upper, lower, left and right edges thereof.

An inner space is formed in the cover 60, and one side thereof is opened. Therefore, cotton or the like can be used as the heat insulating material 601 to be inserted into the above-mentioned internal space. A first zipper 701 extending along the x-axis direction is formed in the heat insulating material 601.

7, the first zipper part 701 is engaged with the second zipper part 703 using the zipper pulls 705. As shown in Fig. The two zipper pulls 705 are moved in the direction of the arrow of the enlargement circle in Fig. 7, that is, along the x-axis direction and the -x-axis direction, respectively, so that the heat insulating material 601 and the cover member 70 can be joined have.

The power supply line 401 passes through the left outlets 707 and 2015 one after another and flows through the power supply device 40 in the case where the power supply device 40 Respectively. When the heating blanket 400 is used in the home, the power line 401 can be easily drawn out to the outside through the outlets 2015 in the up, down, left and right directions depending on the position of the outlet. On the other hand, the heating blanket 400 may further include zippers 709, 7091, and 7093 to enhance convenience for the user. Here, the zipper portions 709, 7091, and 7093 include a third zipper portion 709, a fourth zipper portion 7091, and a fifth zipper portion 7093. The third zipper part 709 can be engaged with the first zipper part 701 as necessary to engage the cover member 70 with the heat insulating material 601. The cover member 70 may be coupled to the cover 60 by using a fourth zipper 7091 or a fifth zipper 7093 in place of the heat insulating material 601. [

8 schematically shows a heating blanket 500 according to a fifth embodiment of the present invention. Since the structure of the heating blanket 500 of FIG. 8 is similar to that of the heating blanket 400 of FIG. 7, the same reference numerals are used for the same portions, and a detailed description thereof will be omitted for the sake of convenience.

As shown in FIG. 8, the heating blanket 500 includes a cover 60 and a cover zipper 602. The cover zipper 602 is formed on the cover 60. [ A zipper 703 is attached to the cover member 70 to engage with the cover zipper 602. That is, the cover zipper 602 and the zipper 703 can be engaged with each other by using the zipper pulls 705. The cover 60 may be a blanket or a blanket cover, for example. Therefore, when the heating blanket 500 is used, the heating blanket 500 can be conveniently used by combining the cover zipper 602 and the zipper 703. The outlets 2015 formed at upper and lower left and right corners of the cover member 70 and the outlets 707 formed at the upper and lower and left and right sides of the cover 60 are used to connect the power line 401 to the outside It can be withdrawn. Therefore, the heating blanket 500 can be easily used.

Hereinafter, the present invention will be described in more detail with reference to experimental examples. These experimental examples are only for illustrating the present invention. The present invention is not limited thereto.

Bending test of heat pad weaving body

Experimental Example 1

A weft yarn and a warp yarn having the same structure as in Fig. 3 were woven to prepare a heat generating pad. The weft was prepared by coating a 0.46 mm thick carbon layer on the outer surface of the cotton core. The warp yarns were produced using various kinds of yarns. The average elastic recovery rate of the manufactured weft was measured. The heat pad was manufactured by weft and warp, and then placed in a desiccator. The temperature and humidity of the desiccator were set at 20 ± 2 ° C and 65 ± 2%, respectively. The heating pad was maintained for 5 seconds according to the KES-FB system and then removed. The surface of the heating pad was observed after repeating this process 10 times. The remaining detailed experimental procedures can be easily understood by those skilled in the art, so that detailed description thereof will be omitted.

Experimental Example 2

A 0.48 mm thick carbon layer was coated on the outer surface of the cotton yarn. The remaining experimental procedure was the same as Experimental Example 1 described above.

Experimental Example  3

A 0.50 mm thick carbon layer was coated on the outer surface of the cotton yarn. The remaining experimental procedure was the same as Experimental Example 1 described above.

Experimental Example 4

A 0.52 mm thick carbon layer was coated on the outer surface of the cotton yarn. The remaining experimental procedure was the same as Experimental Example 1 described above.

Experimental Example 5

A 0.54 mm thick carbon layer was coated on the outer surface of the cotton yarn. The remaining experimental procedure was the same as Experimental Example 1 described above.

Experimental Example  6

A 0.56 mm thick carbon layer was coated on the outer surface of the cotton yarn. The remaining experimental procedure was the same as Experimental Example 1 described above.

Experimental Example  7

A 0.58 mm thick carbon layer was coated on the outer surface of the cotton yarn. The remaining experimental procedure was the same as Experimental Example 1 described above.

Experimental Example 8

A 0.60 mm thick carbon layer was coated on the outer surface of the cotton yarn. The remaining experimental procedure was the same as Experimental Example 1 described above.

Experimental Example  9

A 0.62 mm thick carbon layer was coated on the outer surface of the cotton yarn. The remaining experimental procedure was the same as Experimental Example 1 described above.

Experimental Example 10

A 0.64 mm thick carbon layer was coated on the outer surface of the cotton yarn. The remaining experimental procedure was the same as Experimental Example 1 described above.

Bending test result of heat pad weaving body

The difference in the average elastic recovery rates of the weft yarns and the warp yarns of the heat generating pads manufactured according to Experimental Examples 1 to 10 was investigated, and the calorific value and bending surface characteristics were examined.

As shown in Table 1, the smaller the thickness of the carbon layer, the smaller the calorific value. In Experimental Example 1 and Experimental Example 2, a surface phenomenon occurred on the surface of the heating pad and the bending surface characteristics were not good. In Experimental Examples 9 and 10, the heating pad was curled and the bending surface characteristics were not good. On the other hand, when the difference between the thickness of the carbon layer and the average elastic recovery rate was appropriately adjusted as in Experimental Example 6 and Experimental Example 7, a heating pad having an appropriate calorific value and bending surface characteristics could be manufactured.

Experimental Example Carbon layer thickness Average elastic recovery rate Calorific value Bending surface characteristics weft warp threads car Experimental Example 1 0.46mm 46% 58% 12% Little Bad Experimental Example 2 0.48mm 48% 61% 13% Little Bad Experimental Example 3 0.50mm 49% 58% 9% Middle Somewhat good Experimental Example 4 0.52 mm 51% 61% 10% Middle Somewhat good Experimental Example 5 0.54mm 53% 61% 8% Middle Somewhat good Experimental Example 6 0.56mm 55% 62% 7% Middle Good Experimental Example 7 0.58mm 58% 65% 7% Middle Good Experimental Example 8 0.60mm 61% 64% 3% Large Somewhat good Experimental Example 9 0.62mm 64% 65% One% Large Bad Experimental Example 10 0.64mm 71% 65% 6% Large Bad

It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the following claims.

10. Sheath
20. Endothelium
30. Heating Pad
40. Power supply
50. Temperature control device
60. Cover
70. The cover member
101. First edge portion
103. Second edge portion
105. Zipper Handle
201, 202, 203, 204,
207. Folding line
301. Metal electrode
303. Conductive Composite Wefts
305. Single warp yarns
309. Bonding section
401. Power line
501. Temperature sensor
601. Insulation
602. Cover Zipper
603, 703, 1031. The second zipper part
701, 1011. First zipper part
705. Zipper Handle
707, 2013, 2015. Outlet
709, 7091, 7093. Zippers
2011, 2021, 2023. Inlet
3031. Core
3033. Carbon layer

Claims (15)

A casing having a hollow space formed therein and having an opening at one side,
An inner skin in contact with the hollow space and having two or more receiving portions formed therein, and
And a flexible heating pad
Lt; / RTI >
The heat-
A pair of metal electrodes connected to an external power source and supplied with electric power and extending in a first direction,
A plurality of electrically conductive composite weft yarns extending in a second direction intersecting the first direction and interconnecting the pair of metal electrodes,
A plurality of single warp yarns extending lengthwise in the first direction and interwoven with the weft yarns and weaving together,
And a cover member surrounding said metal electrode, said plurality of conductive composite weirs and said plurality of single-
Lt; / RTI >
The difference between the elastic recovery rate of the weft yarns and the elastic recovery rate of the warp yarns is 10%
The receiving portions are formed to be spaced apart from each other, and the receiving portions include an extended inlet formed at an edge thereof, and are adapted to insert the heating pad through the inlet
Wherein the at least one warp of the single warp yarns comprises hemp and the hemp comprises at least one fiber selected from the group consisting of flax, ramie, hemp and jute. The method of claim 1,
Wherein said weft yarns have an average elastic recovery of 55% to 65%. delete The method of claim 1,
Wherein the difference between the elastic recovery rate of the weft yarns and the elasticity recovery rate of the warp yarns is 5% or less. The method of claim 1,
Wherein the warp yarns are spaced apart from one another and the warp spacing is between 1 cm and 1.5 cm. The method of claim 1,
The plurality of weft yarns
A core comprising fibers, and
A carbon layer coated on the outer surface of the core
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Wherein the carbon layer has a thickness of 0.56 mm to 0.58 mm. The method of claim 1,
Further comprising a bonding portion interconnecting the plurality of weft yarns and the pair of metal electrodes, wherein the bonding portion includes carbon, a waterproofing agent, and urethane. The method of claim 1,
Wherein the storage spaces in the respective storage compartments are opened through the inlet port toward a direction away from each other. The method of claim 1,
Wherein when the opening direction of the inlet is the first direction or the second direction and the opening direction of the inlet is the first direction, the length of the receiving portion in the first direction is longer than the length of the receiving portion in the second direction And the length of the accommodating portion in the second direction is greater than the length of the accommodating portion in the first direction when the opening direction of the inlet is the second direction. The method of claim 9,
Wherein when the length of the accommodating portion in the second direction is larger than the length of the accommodating portion in the first direction, the accommodating portions are spaced apart from each other by three or more. The method of claim 9,
The storage unit may further include a slit-shaped outlet that is spaced apart from the inlet and communicates the storage space with the outside,
Wherein the heating pad further comprises a power line connecting the metal electrode and an external power source, and the power line is connected to the power source through the power outlet. The method of claim 1,
The shell
A first edge portion having a first zipper portion,
A second edge portion having a second zipper portion adapted to be engaged with the first zipper portion,
A zipper handle installed at one end of the first zipper part and at one end of the second zipper part, the zipper handle adapted to couple the first zipper part and the second zipper part to each other while folding the envelope in half,
A heated blanket containing. A cover in which an inner space is formed and one side is opened,
A heat insulating material inserted into the inner space, and
A flexible heating pad disposed between the cover and the heat insulating material,
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The heat-
A pair of metal electrodes connected to an external power source and supplied with electric power and extending in a first direction,
A plurality of electrically conductive composite weft yarns extending in a second direction intersecting the first direction and interconnecting the pair of metal electrodes,
A plurality of single warp yarns extending lengthwise in the first direction and interwoven with the weft yarns and weaving together,
A cover member surrounding the metal electrode, the plurality of electrically conductive composite weft yarns and the plurality of single warp yarns,
Lt; / RTI >
The difference between the elastic recovery rate of the weft yarns and the recovery rate of the warp yarns is 10% or less,
Wherein the at least one warp of the single warp yarns comprises hemp and the hemp comprises at least one fiber selected from the group consisting of flax, ramie, hemp and jute. The method of claim 13,
The heat-
Another zipper portion formed to extend along the second direction and corresponding to the zipper portion, and
And a pair of zipper handles coupled to said another zipper portion and adapted to engage said zipper portion and said another zipper portion while moving in opposite directions along said another zipper portion,
A heated blanket containing. The method of claim 13,
The cover further includes a cover zipper formed to extend along the second direction and corresponding to the zipper portion,
Wherein the cover zipper is adapted to mate with the zipper.

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