Method for manufacturing a transparent door side step using a coating agent

Abstract

The “method for manufacturing a transparent door side step using a coating agent” according to the present invention comprises the following steps. The method includes a preparation step (S1) of providing a base plate (110) having a pattern (113) perforated therein, manufactured to be used as a door side step of a vehicle; an attachment step (S2) of attaching a tape (160) to the upper surface (112) of the base plate (110) after the preparation step (S1) to finish the pattern (113); a coating step (S3) of applying a light-transmitting coating material (130) to the lower surface (114) of the base plate (110) so that the lower surface (114) of the base plate (110) faces upward after the attachment step (S2) to form a coating layer (133) in which the coating material (130) is filled into the pattern (113); and a solidification step (S4) of solidifying the coating layer (133) after the coating step (S3). Therefore, the following effects are achieved. The coating layer (133) can be easily formed into a thin film with a thickness of 1 mm or less, including the portion filled in the pattern (113), after undergoing the solidification step (S4). That is, it is possible to attach it to the lower surface (114) of the base plate (110) in a state thinner than the transparent plate of the background technology. Therefore, the light transmittance is superior compared to the background technology. In addition, as with the background technology, the process of manufacturing an injection mold to produce a transparent plate and the injection process using the said injection mold can be omitted, so the manufacturing cost can be lowered and productivity can be improved as the manufacturing process is simplified.

Description

Technology Field

[0001] The present invention relates to a "method for manufacturing a light-transmitting door side step using a coating agent," and more specifically, to a "method for manufacturing a light-transmitting door side step using a coating agent" characterized by forming a coating layer on the lower surface of a base plate by applying and solidifying a coating agent to the lower surface of a base plate having a pattern perforated therein, thereby allowing light to be transmitted while the pattern is finished. Background Technology

[0002] Hereinafter, the method for manufacturing a light-transmitting door side step according to the present invention will be described in conjunction with the attached drawings.

[0003] Before explaining the manufacturing method of the background technology, let's look at the light-transmitting door side step (1) as follows.

[0004] FIG. 1 is a cross-sectional view showing a translucent door side step manufactured according to the background technology mounted on a vehicle, cut in the longitudinal direction, and is explained together.

[0005] Generally, a plate-shaped door side step is installed on the lower part of the vehicle frame corresponding to the door, allowing occupants to step on it. This is a vehicle component made of metal that features various patterns, such as the vehicle's brand, engraved to create an aesthetic appeal while serving a functional role as a stepping stone.

[0006] However, recently, a light-transmitting door side step (1) is used to not only improve the aesthetic presentation of the door side step but also to make it visible at night so that it can be easily stepped on when boarding.

[0007] The above-described light-transmitting door side step (1) is formed by perforating a pattern (13), such as a vehicle brand, on a plate-shaped base plate (10) as shown in FIG. 1, and is mounted on a cover (C) that covers an LED board (P) placed on the frame (F) of the vehicle. Accordingly, the light of the LED (L) mounted on the LED board (P) is configured to pass through the pattern (13) and be irradiated upward.

[0008] The manufacturing method of such a light-transmitting door side step (1) is as follows.

[0009] FIG. 2 is a perspective view illustrating the process of inserting a transparent plate below a base plate as a process of manufacturing a light-transmitting door side step according to the background technology, and FIG. 3 is a perspective view illustrating the light-transmitting door side step completed by the process of FIG. 2. In addition, FIG. 4 is a cross-sectional view taken along the line F-F' of FIG. 3, which is explained together with FIG. 4 as a cross-sectional view illustrating the state in which the base plate and the transparent plate are separated.

[0010] As shown in FIGS. 2 and 4, a base plate (10) made of metal and having a pattern (13) perforated therein is provided, and a transparent plate (20) is attached to the lower part of the base plate (10). The transparent plate (20) is molded from a synthetic resin material such as acrylic, has a shape that conforms to the base plate (10), and has a protruding pattern (23) formed therein that is inserted into the pattern (13).

[0011] In the case where a downwardly bent flange (15) is formed on the edge of the base plate (10), the transparent plate (20) can be fitted into the flange (15), and the protruding pattern (23) is of the same shape as the pattern (13) and is inserted into the pattern (13).

[0012] Through the above combination process, a light-transmitting door side step (1) can be completed as shown in Fig. 3.

[0013] When the light-transmitting door side step (1) is mounted on a vehicle as in Fig. 1, the light from the LED (L) passes through the perforated pattern (13) through the protruding pattern (23) and is projected upward.

[0014] The manufacturing method of the light-transmitting door side step (1) based on the background technology examined above had the following problems.

[0015] There was the inconvenience of having to separately mold the above transparent plate (20) using an injection mold. That is, since an injection mold had to be manufactured and each transparent plate (20) had to be molded using the injection mold, there was a problem of increased manufacturing costs.

[0016] In addition, since the process of manufacturing the injection mold, the process of molding the transparent plate (20), and the process of combining the transparent plate (20) with the base plate (10) are required, the manufacturing process becomes complex, which leads to a problem of reduced productivity. In other words, there was a problem that rapid production was difficult.

[0017] In addition, there was a problem that the light transmittance was reduced because the thickness (T) including the protruding pattern (23) in the transparent plate (20) could not be formed into a thin plate of 1 mm or less and had to be manufactured to be at least 2.5 mm or more. That is, in order to improve the transmittance, it is necessary to make the thickness (T) 1 mm or less, but in this case, the durability is reduced, so there was a problem of it being damaged during the process of detaching from the injection mold or combining with the base plate (10). Prior art literature

[0018] Korean Patent Registration No. 10-1842947 (March 22, 2018) The problem to be solved

[0019] The problem to be solved by the "method for manufacturing a transparent door side step using a coating agent" according to the present invention is as follows.

[0020] First, there was the inconvenience of having to mold the above-mentioned transparent plate separately using an injection mold. That is, since an injection mold must be manufactured and each transparent plate must be molded using the injection mold, the manufacturing cost increases and the manufacturing process becomes complex, leading to a decrease in productivity. This invention aims to solve these problems.

[0021] Second, we aim to solve the problem of reduced light transmittance because the thickness of the transparent plate containing the protruding pattern cannot be formed into a thin plate of 1 mm or less due to durability, and must be manufactured to be at least 2.5 mm or thick. means of solving the problem

[0022] The "method for manufacturing a transparent door side step using a coating agent" according to the present invention is composed of the following steps to solve the above problem.

[0023] The method comprises a preparation step of providing a base plate having a perforated pattern, manufactured to be used as a door side step of a vehicle; an attachment step of attaching a tape to the upper surface of the base plate to finish the pattern after the preparation step; a coating step of applying a light-transmitting coating material to the lower surface of the base plate with the lower surface facing upward after the attachment step, thereby forming a coating layer in which the coating material fills the pattern; and a solidification step of solidifying the coating layer after the coating step.

[0024] Alternatively, it may consist of the following process.

[0025] The method comprises a preparation step of providing a base plate having a perforated pattern, manufactured to be used as a door side step of a vehicle; an attachment step of attaching tape to the upper surface of the base plate to finish the pattern after the preparation step; a finishing step of forming a wall with a barrier material around the lower surface of the base plate after the attachment step to prevent a coating material described later from extending beyond the base plate; an application step of applying a light-transmitting coating material to the lower surface of the base plate with the lower surface facing upward after the finishing step to form a coating layer in which the coating material fills the pattern; and a solidification step of solidifying the coating layer after the application step.

[0026] In this case, the barrier may be a rubber band with a flat cross-section that accommodates and compresses the edge of the base plate. Alternatively, it may be a tape attached to the edge of the base plate. Effects of the invention

[0027] The "method for manufacturing a light-transmitting door side step using a coating material" according to the present invention has the following effects through the above-mentioned solution.

[0028] First, the light-transmitting door side step forms a transparent coating layer by applying a coating material to the lower surface of the base plate and allowing it to solidify. Therefore, since the thickness of the coating layer can be adjusted by controlling the amount of the applied coating material, the coating layer can be easily formed into a thin film of 1 mm or less, including the parts filled with patterns, after the solidification step. As a result, it is possible to attach it to the lower surface of the base plate in a state thinner than the transparent plate of the background technology. Consequently, the light transmittance is inevitably superior compared to the background technology.

[0029] Second, as with the background technology, the process of manufacturing an injection mold to produce a transparent plate and the injection process using the said injection mold can be omitted, so the manufacturing cost can be lowered and productivity can be improved as the manufacturing process is simplified. Brief explanation of the drawing

[0030] FIG. 1 is a cross-sectional view showing a translucent door side step manufactured according to the background technology mounted on a vehicle, cut in the longitudinal direction. FIG. 2 is a perspective view illustrating the process of inserting a transparent plate below a base plate as a process of manufacturing a light-transmitting door side step according to the background technology. FIG. 3 is a perspective view illustrating a light-transmitting door side step completed by the process of FIG. 2. FIG. 4 is a cross-sectional view taken along the line F-F' of FIG. 3, showing the state in which the base plate and the transparent plate are separated. FIG. 5 is a perspective view illustrating a preparation step of providing a base plate with a pattern perforated therein in a method for manufacturing a light-transmitting door side step using a coating agent according to the present invention, wherein (a) the upper surface of the base plate faces upward and (b) the lower surface of the base plate faces upward. FIG. 6 is a perspective view illustrating an attachment step of attaching a tape to the upper surface of a base plate in a method for manufacturing a light-transmitting door side step using a coating agent according to the present invention. FIG. 7 is a perspective view illustrating a coating step in which a coating agent is applied to the back surface of a base plate by flipping the base plate over from the state of FIG. 6. FIG. 8 is a perspective view showing the completion of the base plate after the coating step of FIG. 7, after solidifying the coating agent and removing the tape, by flipping it over so that the upper surface of the base plate faces upward. FIG. 9 is a process diagram illustrating the process of a method for manufacturing a light-transmitting door side step using a coating agent according to the present invention, shown as a local cross-sectional view. FIG. 10 is a perspective view illustrating the process of a banding step in which, after an attachment step in which a tape is attached to the upper surface of a base plate, the outer edge of the tape protruding outward from the base plate is cut off, and the edge of the base plate is wrapped with a rubber band, as another embodiment of a method for manufacturing a light-transmitting door side step using a coating agent according to the present invention. FIG. 11 is a perspective view illustrating the completion of the bending step by the process of FIG. 10. FIG. 12 is a cross-sectional view showing a translucent door side step using a coating agent manufactured according to the present invention mounted on a vehicle, cut in the longitudinal direction. Specific details for implementing the invention

[0031] Hereinafter, various embodiments of this document are described with reference to the accompanying drawings. However, this is not intended to limit the technology described in this document to specific embodiments and should be understood to include various modifications, equivalents, and / or alternatives to the embodiments of this document. In relation to the description of the drawings, similar reference numerals may be used for similar components.

[0032] Furthermore, expressions such as "First," "Second," etc., used in this document may modify various components regardless of order and / or importance, and are used merely to distinguish one component from another without limiting such components. For example, "Part 1" and "Part 2" may refer to different parts regardless of order or importance. For instance, without departing from the scope of rights described in this document, Part 1 may be named Part 2, and similarly, Part 2 may be renamed Part 1.

[0033] Furthermore, the terms used in this document are used merely to describe specific embodiments and are not intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as generally understood by those skilled in the art described in this document. Terms used in this document that are defined in general dictionaries may be interpreted as having the same or similar meaning as they have in the context of the relevant technology, and are not to be interpreted in an ideal or overly formal sense unless explicitly defined in this document. In some cases, even terms defined in this document may not be interpreted to exclude the embodiments of this document.

[0034] Hereinafter, a detailed embodiment of the method for manufacturing a light-transmitting door side step using a coating agent according to the present invention will be described together with the attached drawings.

[0035] FIG. 5 is a perspective view illustrating a preparation step of providing a base plate with a pattern perforated therein in a method for manufacturing a light-transmitting door side step using a coating agent according to the present invention, wherein (a) the upper surface of the base plate faces upward and (b) the lower surface of the base plate faces upward. FIG. 6 is a perspective view illustrating an attachment step of attaching a tape to the upper surface of the base plate in a method for manufacturing a light-transmitting door side step using a coating agent according to the present invention, FIG. 7 is a perspective view illustrating a coating step of applying a coating agent to the rear surface of the base plate by flipping the base plate over from the state of FIG. 6. FIG. 8 is a perspective view illustrating the completed state after the coating step of FIG. 7, in which the coating agent is solidified, the tape is removed, and the base plate is flipped over so that the upper surface faces upward. FIG. 9 is a process flow diagram illustrating the process of manufacturing a light-transmitting door side step using a coating agent according to the present invention as a local cross-sectional view.

[0036] A preparation step (S1) is performed to provide a base plate (110) having a pattern (113) perforated therein as in FIG. 1 and FIG. 9(a), which is manufactured to be used as a door side step of a vehicle. The base plate (110) may have a flange (115) bent downward at the edge, or it may not have a flange (115) formed therein.

[0037] After the preparation step (S1) above, an attachment step (S2) is performed in which a tape (160) is attached to the upper surface (112) of the base plate (110) to finish the pattern (113) as shown in FIGS. 6 and FIGS. 9(b). At this time, the perimeter of the pattern (113) is pressed firmly so that the coating material (130) described later does not seep between the tape (160) and the upper surface (112) of the base plate (110).

[0038] After the attachment step (S2), as shown in FIGS. 7 and FIGS. 9(c), a coating step (S3) is performed in which a light-transmitting coating material (130) is applied to the lower surface (114) while the lower surface (114) of the base plate (110) is turned upside down so that the lower surface (114) is facing upward, thereby filling the pattern (113) with the coating material (130) and forming an even coating layer (133) on the lower surface (114).

[0039] The coating material (130) may be composed of, for example, a UV (ultraviolet) coating material, a polyurethane varnish, etc. These coating materials (130) may be applied in a liquid state using a brush or the like, or may be applied by spraying. Since the amount of coating material (130) applied is adjusted, the coating layer (133) can be easily formed into a thin film with a thickness of 1 mm or less, including the part filled in the pattern (113), after undergoing a subsequent solidification step (S4).

[0040] After the above coating step (S3), a solidification step (S4) is performed to solidify the coating layer (133) as shown in FIG. 9(c). For example, if the coating material (130) is a UV coating material, it can be solidified by irradiating it with ultraviolet rays for 30 to 40 minutes. And if it is a polyurethane varnish, it is solidified by leaving it at a temperature of 15°C to 30°C for 1 to 2 hours in a shaded area where sunlight does not reach and ventilation is possible.

[0041] After the above solidification step (S4), a peeling step (S5) is performed to peel off the tape (160) as shown in FIGS. 8 and 9(d), so that the light-transmitting door side step (100) is completed.

[0043] Hereinafter, other embodiments of the present invention will be examined together with the attached drawings.

[0044] FIG. 10 is a perspective view illustrating the process of a banding step in which, as another embodiment of the method for manufacturing a light-transmitting door side step using a coating agent according to the present invention, after an attachment step in which a tape is attached to the upper surface of a base plate, the outer edge of the tape protruding outward from the base plate is cut off, and then the edge of the base plate is wrapped with a rubber band. FIG. 11 is a perspective view illustrating the banding step completed by the process of FIG. 10.

[0045] This embodiment includes all the processes from the preparation step (S1) to the peeling step (S5) that have already been examined, but is characterized by the addition of a finishing step (S2.5) between the attachment step (S2) and the coating step (S3).

[0046] The above finishing step (S2.5) is a process of forming a wall with a barrier (150) around the lower surface (114) of the base plate (110) after the above attachment step (S2) so that the coating material (130) described later does not go beyond the base plate (110).

[0047] The above barrier (150) may be a rubber band with a flat cross section that accommodates and compresses the edge (117) of the base plate (110) as in FIG. 10, for example. Alternatively, it may be a tape attached to the edge (117).

[0048] Therefore, in the subsequent coating step (S3), the phenomenon in which the coating material (130) deviates from the base plate (110), contaminating the workbench and wasting the coating material (130) can be prevented.

[0049] At this time, it is preferable to cut the tape (160) attached in the attachment step (S2) in advance so that it fits the edge of the base plate (110).

[0050] Accordingly, the above finishing step (S2.5) can efficiently prevent the coating material (130) from moving outside the base plate (110) because the flange (115) is not formed on the base plate (110) or the height of the flange (115) is low.

[0051] Subsequently, in the peeling step (S5) that proceeds, the tape (160) and the barrier film (150) are removed.

[0053] The light-transmitting door side step (100) manufactured according to the present invention has a transparent coating layer (133) formed by applying a coating material (130) to the lower surface (114) of the base plate (110) and allowing it to solidify. Accordingly, as shown in FIG. 12, when mounted on a vehicle, the light of the LED (L) passes through the coating layer (133) and passes through the pattern (113) to be illuminated.

[0054] At this time, the coating layer (133) can be easily formed into a thin film with a thickness of 1 mm or less, including the portion filled in the pattern (113), after undergoing the solidification step (S4). It is possible to attach it to the lower surface (114) of the base plate (110) in a state thinner than the transparent plate of the background technology. Therefore, the light transmittance is inevitably superior compared to the background technology.

[0055] In addition, as with the background technology, the process of manufacturing an injection mold to produce a transparent plate and the injection process using the said injection mold can be omitted, so the manufacturing cost can be lowered and productivity can be improved as the manufacturing process is simplified. Explanation of the symbols

[0056] 100: Flooded door side step 110: Base plate 112: Top surface 113: Pattern 115: Flange 117: Edge 130: Coating material 133: Coating layer 150: Barrier 160: Tape S1: Preparation stage S2: Attachment stage S3: Application step S4: Solidification step S5: Peeling stage S2.5: Peeling stage T': Thickness L: LED

Claims

Claim 1 delete Claim 2 delete Claim 3 A preparation step comprising a base plate having a perforated pattern, manufactured to be used as a door side step of a vehicle, and After the above preparation step, an attachment step of attaching tape to the upper surface of the base plate to finish the pattern, and After the attachment step above, a finishing step of forming a wall with a barrier around the lower perimeter of the base plate to prevent the coating material described later from moving away from the base plate, and After the above finishing step, a coating step in which a light-transmitting coating material is applied to the lower surface of the base plate while the lower surface of the base plate is positioned so as to face upward, thereby forming a coating layer in which the coating material fills the pattern, and After the above coating step, the method includes a solidification step to solidify the coating layer, and A method for manufacturing a light-transmitting door side step using a coating agent, characterized in that the above-mentioned barrier is a rubber band with a flat cross-section that accommodates and compresses the edge of the base plate. Claim 4 delete

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