Automobile mesh type heating interior material and Manufacturing method the same

Abstract

The present invention relates to an automotive mesh-type heating interior material and a method for manufacturing the same, comprising a substrate in which a heating element having a mesh structure and a terminal formed integrally are insert-molded. Therefore, since the integrally formed terminal and heating element are inserted into the mold and formed integrally with the substrate, the manufacturing process of the automotive mesh-type heating interior material is simplified.

Description

Technology Field

[0001] The present invention relates to an automotive mesh-type heating interior material and a method for manufacturing the same. Background Technology

[0002] Since heating methods using air conditioning systems in automobiles take a considerable amount of time to raise the interior temperature, heaters utilizing radiant heat are used in parallel. In the case of electric vehicles, because engine heat cannot be utilized, heating interior materials that use electricity as an energy source are applied.

[0003] The heating internal material is formed by coating a heating element on one side of an injection-molded substrate, and laminating an electrode element, an insulating element, etc., onto the heating element. Additionally, a terminal is connected to the electrode element using a fastening means.

[0004] Since heating elements, electrodes, terminals, etc. are laminated onto an injection-molded substrate, the manufacturing process is complex, and the manufacturing efficiency of heat-generating internal materials has decreased due to the increased number of process steps. Prior art literature

[0005] Republic of Korea Registered Patent No. 10-1684260 (Published Dec. 12, 2016) Republic of Korea Registered Patent No. 10-1619497 (Published May 13, 2016) The problem to be solved

[0006] The present invention provides an automotive mesh-type heating interior material that simplifies the manufacturing process and increases manufacturing efficiency, and a method for manufacturing the same. means of solving the problem

[0007] An automotive mesh-type heating interior material according to one embodiment of the present invention comprises a substrate in which a terminal formed integrally and a heating element having a mesh structure are insert-molded.

[0008] The above-described automotive mesh-type heating interior material may further include a fixing part that protrudes into the interior of the above-described material from the heating part and is coupled.

[0009] The above-described automotive mesh-type heating interior material may further include a frame member arranged along the edge of the heating portion.

[0010] The above heating element can be made of any one selected from titanium dioxide (TiO2), nickel (Ni), iron oxide (FeO), alumina (Al2O3), tin (Sn), yttria-stabilized zirconia (YSZ), carbon nanotubes (CNT), reduced graphene oxide (rGO), graphene, PEDOT, and PEDOT:PSS (Poly(3,4-ethylenedioxythiophene)).

[0011] The above heating element is formed in a planar shape and may have a plurality of through holes.

[0012] The above heating element may be placed on one surface of the above material.

[0013] One side of the above terminal is connected to the heating element inside the above material, and the other side may be exposed to the other surface of the above material.

[0014] A method for manufacturing an automotive mesh-type heating interior material according to one embodiment of the present invention may include the step of placing a terminal and a heating part formed integrally in a mold, and the step of injecting resin into the mold to mold a substrate.

[0015] The above terminal and the heating element can be inserted and formed integrally with the above material. Effects of the invention

[0016] According to an embodiment of the present invention, since the integrally formed terminal and heating element are inserted into the mold and formed integrally with the substrate, the manufacturing process of the automotive mesh-type heating interior material is simplified. Brief explanation of the drawing

[0017] FIG. 1 is a schematic diagram showing an automotive mesh-type heating interior material according to one embodiment of the present invention. FIG. 2 is a schematic diagram showing the heating element of FIG. 1. Figure 3 is a photograph showing an example of the heating element of Figure 1. FIG. 4 is a schematic diagram showing a method for manufacturing an automotive mesh-type heating interior material according to one embodiment of the present invention. Specific details for implementing the invention

[0018] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Throughout the specification, similar parts are denoted by the same reference numerals.

[0019] Then, an automotive mesh-type heating interior material according to one embodiment of the present invention will be described with reference to FIGS. 1 to 3.

[0020] Referring to FIGS. 1 to 3, the automotive mesh-type heating interior material (1) according to the present embodiment has a simplified manufacturing process, in which a terminal (30) and a heating part (20) are formed integrally with a substrate (10). The automotive mesh-type heating interior material (1) may be a steering wheel, seat back, door trim, instrument panel, center rack, glove box, pillar trim, headliner, crash pad, luggage trim, etc., installed in the interior of an automobile. The automotive heating interior material (1) generates heat by electric energy and can heat the interior with radiant heat.

[0021] The substrate (10) can be made in various shapes, such as flat or curved surfaces, depending on the location in the car interior where the car heating interior material (1) is applied. That is, the substrate (10) can be formed in a 3D three-dimensional shape. The substrate (10) can be formed by injection molding. The substrate (10) has one side and the other side. When the car mesh-type heating interior material (1) is installed in the car interior, one side faces the interior where the occupant is located, and the other side faces the chassis forming the frame of the car.

[0022] The substrate (10) can be made of polyamide 6, polypropylene, polyphenylene sulfide, etc.

[0023] The heating element (20) is positioned on one side of the substrate (10). The heating element (20) is formed in a mesh structure. The heating element (20) is formed in a surface shape and has a plurality of through holes (21) formed at intervals. The substrate (10) is positioned in the through holes (21), so that the heating element (20) can be firmly fixed to one side of the substrate (10).

[0024] The heating element (20) can be made of metal or ceramic materials such as titanium dioxide (TiO2), nickel (Ni), iron oxide (FeO), alumina (Al2O3), tin (Sn), and yttria stabilized zirconia (YSZ).

[0025] In addition, the heating element (20) can be made of carbon polymer materials such as carbon nanotubes (CNT), reduced graphene oxide (rGO), and graphene.

[0026] In addition, the heating element (20) can be made of a conductive polymer such as PEDOT, PEDOT:PSS (Poly(3,4-ethylenedioxythiophene)).

[0027] The heating element (30) can be made of a conductive material with high resistance, and the material can be varied according to the design of the automotive mesh-type heating material.

[0028] The heating element (30) may be made of stainless steel (Steel Use Stainless; SUS), nickel-based alloy, copper-based alloy, tungsten-based alloy, plated gold, silver, copper, etc.

[0029] The heating element (20) can be made of stainless steel (Steel Use Stainless; SUS), nickel-based alloy, copper-based alloy, tungsten-based alloy, etc. The heating element (20) can be formed by plating gold, silver, or copper onto a metal or resin material.

[0030] The heating element (20) can be made in various shapes as shown in Figure 3. That is, the heating element (20) can be formed by a wire weaving method (see Figure 3a). The heating element (20) can be formed by welding after bar members are spaced apart in the horizontal and vertical directions (see Figure 3b). The heating element (20) can be formed by forming multiple spaced cut holes in a flat plate and then stretching and expanding it (see Figure 3c). The heating element (20) can be formed by a perforation method that creates holes in a flat surface (see Figure 3d). The perimeter of the holes can be formed in various shapes such as circles, squares, and pentagons. The pattern of the heating element (20) can be varied according to the design of the automotive mesh-type heating interior material (1).

[0031] The thickness of the heating element (20) is thinner than the thickness of the substrate (10). The thickness ratio of the heating element (20) to the substrate (10) may be 1:5 to 100. If the thickness ratio is less than 1:5, the thickness of the substrate (10) is relatively thin, so the problem of thermal deformation due to heating and the change in dimensions due to thermal expansion and contraction are large, which may cause problems during long-term use. If the thickness ratio exceeds 1:100, the heat capacity of the substrate (10) increases, and consequently, heat loss due to the substrate may increase significantly. Heat loss is a major factor that slows down the heating rate, and consequently, an excessively high thickness ratio causes the heating performance per unit of time to decrease due to heat loss. In addition, the waiting time for the user to feel the warmth increases, and power consumption efficiency also decreases.

[0032] Meanwhile, a fixing part (22) protruding into the interior of the substrate (10) may be formed in the heating part (20). Multiple fixing parts (22) are formed at intervals on the heating part (20). The fixing part (22) increases the contact area between the heating part (20) and the substrate (10). The fixing part (22) fixes the heating part (20) so that it does not move from the substrate (10). The fixing part (22) is perpendicular to the heating part (20).

[0033] Additionally, a frame member (23) may be placed at the edge of the heating member (20). The frame member (23) holds the heating member (20) to maintain its shape. The frame member (23) may be formed to have greater strength and a thicker thickness than the heating member (20).

[0034] A skin layer (not shown), such as leather, fabric, or film, that covers a heating element (20) may be bonded to one side of the substrate (10).

[0035] The terminal (30) is made of the same material as the heating element (20) and is formed integrally. However, the material of the heating element (20) may be composed of a material with a higher resistance value than that of the terminal (30).

[0036] A terminal (30) is positioned on one side and the other side of the substrate (10), respectively. The terminal (30) is positioned inside the substrate (10). One side of the terminal (30) is connected to a heating element (20) on one side of the substrate (10), and the other side is exposed to the other side of the substrate (10).

[0037] A wire connected to a battery (not shown) is soldered to the other side of the terminal (30). Electrical energy from the battery can be supplied to the heating element (20) through the wire and the terminal (30). The heating element (20) can be heated to a temperature set by the operation of the occupant.

[0038] Meanwhile, a protrusion (not shown) is protruded from the surface of the terminal (30). The protrusion maximizes the contact area between the terminal (30) and the substrate (10) to fix the terminal (30) so that it does not move inside the substrate (10).

[0039] Accordingly, current flows from the terminal (30) to the heating part (20), and at this time, the heating part (20), which has a mesh structure narrower than the terminal (30), has a structurally high resistance value, so that heat generation due to resistance can be naturally induced.

[0040] Next, a method for manufacturing a mesh-type heating interior material for automobiles will be explained with reference to Fig. 4.

[0041] Referring to Figure 4, the method for manufacturing a mesh-type heating interior material for automobiles includes the step of placing a terminal and a heating element in a mold (S10), and the step of molding a substrate (S20).

[0042] A heating element (20) and a terminal (30), which are integrally formed and made of a metal capable of conducting current, are placed in a mold (S10). The terminal (30) is placed on one side and the other side of the heating element (20), respectively. The heating element (20) maintains a pre-set shape in the mold by means of a frame member (23).

[0043] Resin can be injected into the mold. As the resin flows through the mold, a substrate (10) is formed (S20). A heating element (20) is located on one side of the formed substrate (10), and a terminal (30) is located inside the substrate (10). One side of the terminal (30) is connected to the heating element (20) inside the substrate (10), and the other side is exposed to the other side of the substrate (10). Additionally, the terminal (30) and the heating element (20) can be fixed to the substrate (10) so as not to move by means of the protrusion of the terminal (30) and the fixing part (22) of the heating element (20).

[0044] Accordingly, since the integrally formed terminal (30) and heating part (20) are inserted into the mold and formed integrally with the substrate (10), the manufacturing process of the automotive mesh-type heating interior material is simplified.

[0045] Although preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims also fall within the scope of the present invention. Explanation of the symbols

[0046] 1: Automotive mesh-type heating interior material 10: Material 20: Heating part 21: Through hole 22: Fixed part 23: Frame member 30: Terminal

Claims

Claim 1 An automotive mesh-type heating interior material comprising a substrate in which a heating element having a mesh structure and a terminal formed integrally are insert-molded, and a fixing part protruding from the heating element into the interior of the substrate and coupled thereto. Claim 2 delete Claim 3 An automotive mesh-type heating interior material according to claim 1, further comprising a frame member arranged along the edge of the heating portion. Claim 4 In claim 1, the heating element is made of any one selected from titanium dioxide (TiO2), nickel (Ni), iron oxide (FeO), alumina (Al2O3), tin (Sn), yttria stabilized zirconia (YSZ), carbon nanotube (CNT), reduced graphene oxide (rGO), graphene, PEDOT, and PEDOT:PSS (Poly(3,4-ethylenedioxythiophene)). Claim 5 In paragraph 4, the heating element is formed in a planar shape and has a plurality of through holes formed in an automotive mesh-type heating interior material. Claim 6 In claim 1, the heating element is disposed on one side of the substrate, and the terminal has one side connected to the heating element inside the substrate and the other side exposed to the other side of the substrate, forming an automotive mesh-type heating interior material. Claim 7 A method for manufacturing an automotive mesh-type heating interior material comprising the steps of: placing a terminal and a heating element formed integrally in a mold; and injecting resin into the mold to form a substrate, wherein the terminal and the heating element are inserted and formed integrally with the substrate, and a fixing element protrudes from the heating element into the interior of the substrate and is joined.

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