TW200401672A - Masking member - Google Patents

Abstract

The purpose of the present invention is to surly protect by masking the through hole provided on a part of the member to be surface-treated. The masking member 1A may be fitted on the object area to be masked where a though hole is provided, and has a engaging portion 11A to be engaged with said through hole. The bottom end of the engaging portion reaches the tip end of through hole and has a flange 13A at the periphery which coveres the peripheral edge of through hole. The bottom end of the engaging portion 11A reaches the tip end of the through hole when the masking member 1A is inserted into the through hole, and the flange 13A at the bottom periphery of said engaging portion 11A will cover the peripheral edge, whereby the inner surface of through hole may be shielded by the flange 13A, and no mist will adhere thereon even when the mist of sprayed paint enters inside from the surrounding of a article.

Description

200401672 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a method of covering a part (mask part) that does not need to be subjected to a surface treatment when it is subjected to a surface treatment such as painting or plating. Pieces. [Prior Art] The masked portion of the article is protected by surface treatment such as painting, for example, the masked portion is covered with tape or the like for surface treatment. However, the work of covering the masked part with tape is time-consuming and labor-intensive. Here, for a conventional masked portion having a through hole, for example, a cylindrical fitting portion (91A) as shown in FIG. 8 or a box shape as shown in FIG. 10 is used. The plastic shielding member (9A, 9B) of the rear joint (91B) covers the shielding member (9A, 9B) by inserting the fitting portion (91A, 91B) into the through hole (22A, 22B) of the masked portion. 9B). However, when spraying paint on the above-mentioned conventional shielding members (9 A, 9 B), as shown in Fig. 9 and Fig. 11, the mist of paint or the like penetrates from the side of the article to the back, and the paint adheres. Problems in the through holes (2 2 A, 2 2 B) that do not need to be painted (for example, refer to Patent Document 1). Patent Document 1 Registered Utility Model Publication No. 2 5 6 6 7 6 8 [Summary of the Invention] The present invention is a solution for solving the conventional problems described above, and provides a shielding member (1 A, 1 B) It is mounted on a mask part (2 2 A, 2 1 B) having a through-hole, and an embedded groove is formed in the mask (1 A, 1 B).

314554. ptd Page 7 200401672 V. Description of the invention (2) > Fitting portion (1 1 A, 1 1 B) of perforation (2 2 B, 2 2 B), the fitting portion (1 1 A, 1 1 B) The bottom end reaches the end of the through hole (2 2 A, 2 2 B), and a flange (covering the peripheral edge of the through hole (22A, 22B) is formed around the fitting portion (1 IA, 1 1B)). 1 3 A, 1 3 B). Therefore, in the shielding member, the bottom ends of the back-closing portions (11A, 11B) that are to enter the through-holes (22B, 22B) reach the ends of the through-holes (22A, 22B), and the fitting portions (11A, 11B) A flange (1 3 A, 1 3 B) is formed around the bottom end to cover the peripheral edge of the through hole (22A, 2 2 B). Therefore, when spraying paint, the paint and other mists even from the back side of the article Infiltration will also be blocked by the flange and will not be attached to the through holes (2 2 A, 2 2 B). [Embodiment]-Hereinafter, the present invention will be described in detail. '' FIGS. 1 to 2 show a first embodiment of the present invention. The purpose of the shielding member (1 A) is to use, for example, a through hole for protecting a screw hole (2 2 A) of a masked portion provided on the surface-treated member (2 A) during surface treatment. The shield (1 A) is composed of a bottomed cylindrical body (1 1 A) and a narrow flange portion (1 2 A) provided around the base end of the cylindrical body (1 1 A). The outer peripheral edge of the bottom end protrudes to form a flange (1 3 A). # The outer diameter d 2 of the cylinder body (1 1 A) is set to be slightly smaller than the diameter d3 of the screw hole (22A) used by the shield (1A), and the outer diameter d # of the flange (13A) is set to be slightly Larger than the diameter d 3 (d 2 < d 3 < d]) of the screw hole (2 2 A), and the length L} of the shielding member is set to be slightly larger than the length L 2 of the screw hole (2 1 A) ( L 2-< L]).

31455 ^ ptd Page 8 200401672 V. Description of the invention (3) Materials used as the shielding member (1 A) For example: polyethylene, polypropylene, polypropylene: tep-polyethylene mixture, ethylene-propylene copolymer, ethylene Polyolefins such as dilute vinyl acetate (vinyl acetate) copolymers can also be mixed with chlorinated vinyl resins, styrene resins, acrylic resins, fluorinated acrylic resins, vinylidene chloride resins, and propionic acid. Vinyl ester resins, styrene-butadiene copolymers, thermoplastic polyester resins, thermoplastic polyamide resins, acrylonitrile-butadiene-etyrene (ABS), Acrylonitrile-gasified polyethylene-styrene copolymer (ACS, acrylonitrile-chlorinated polyethylene-styrene), acrylonitrile-butadiene-styrene-N-phenylmaleimide copolymer, styrene ethyl maleic anhydride Copolymer, styrene-acrylonitrile copolymer, acrylonitrile-styrene-acrylate copolymer, methacrylic acrylic-butadiene-styrene copolymer, syndiotactic polymerization using a metal dicyclopentadiene compound Phenethyl (SPS 'syndiotactic polystyrene), isotactic polystyrene (IPS, isotactic polystyrene), POM' polyacetal, polysulfone (PSF, polysulfone), poly & $ maple (PES, polyether sulfone) , Polyphenylene ether (PPE, polyphenylene ether), modified polyphenylene ether (modified ppe), polyphenylene sulfide (PPS), polyarylate (PAR, polyarylate), polyetheretherketone (PEEK, polyether ether ketone), polyimide (PA I, po 1 yamideimide), polyimide (PI 'polyimide), polyether Si imine (PEI, polyetherimide), polychlorodimaleimide, Thermoplastic engineering plastics such as TPX (methylpentane copolymer), polypropylene

314554. ptd page 9 200401672 V. Description of the invention (4) • Liquid crystal engineering plastics such as ethers, polytetrafluoroethylene (PTTE, ρ ο 1 ytetraf 1 ur 〇e ΐ hy 1 ene), etc. Compression-moldable engineering plastics, amorphous polymers, polyamidamine-maleimide, maleimide-three-cultivation thermosetting aromatic polyimide, acrylic rubber-acrylonitrile-styrene copolymer (AAS, acrylate-acrylonitrile-styrene terpolymer), acrylonitrile-ethylene / propylene rubber-styrene, copolymer (AES), metal dicyclopentadiene polypropylene, metal dicyclopentadiene polyethylene, fluorinated acrylic acid Methyl ester-butadiene-styrene copolymer (MBS, methyl metaacrylate-butadiene-stylene), PA (polyamide), polycarbonate (PC), polyethylene terephthalate (PET ， Polyethylene terephthalate）, polybutylene terephthalate (PBT, polybutylene-terephthalate), crystalline polyethylene terephthalate, crystalline polybutylene terephthalate, and other thermoplastics or Engineering plastics, etc. Furthermore, the modified PPE is based on graft polymerized styrene, α-fluorenylstyrene, α-ethylstyrene, α-fluorenylvinylbenzene, and 0: monomethyldialkylstyrene in PPE. , 〇, m or ρ-vinylbenzene, 0-ethylstyrene, ρ-ethylbenzyl, 2,4-difluorenylbenzene, 0-chlorostyrene, P-chlorostyrene 〇-bromostyrene, 2,4-dichlorostyrene, 2-1-4-fluorenylstyrene, 2,6-digas styrene, vinyl naphthalene, vinyl anthracene and other styrene-based monomers, or Polymerization of styrene-resin based resins such as polystyrene, styrene-acrylonitrile resin, acrylonitrile-butadiene-styrene resin (ABS), and high impact polystyrene (HIPS)物 Fusion 物。 Fusion.

314554.ptd Page 10 200401672 V. Description of the invention (5) As the material of the shielding member (1 A) of the present invention, the resin can be used alone or in combination of two or more kinds as a polymer mixture or a polymer fusion. When two or more resins are used in combination, a compatibility agent may be added for the purpose of improving the compatibility of the resins. In addition, for the purpose of improving the bendability and formability of the resin used in the shielding material (1A) of the present invention, for example, acrylic rubber, isobutyl rubber, silicone rubber, polyurethane rubber, fluoride rubber, and many others can be added. Vulcanized rubber, graft rubber, butadiene rubber, isoprene rubber, chloroprene rubber, polyisoprene rubber, polyisobutylene rubber, polybutene rubber, isobutylene rubber-isoprene rubber Acrylate-butadiene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, pyridine-butadiene rubber, styrene-isoprene rubber, acrylonitrile-chloroprene rubber, Synthetic rubber, natural rubber such as styrene-chloroprene diene rubber, styrene-butadiene-styrene block copolymer (SBS, styrene-butadiene-styrene block copolymer), styrene-isobutylene Diene-styrene-isoprene-styrene (SIS), α-fluorenylstyrene-butadiene-α-fluorenyl styrene block copolymer (α-MeS-Bd-MeS) Α-fluorenylstyrene-isoprene-α-fluorene Styrene-based elastomers such as styrene-block copolymers, styrene-added hydrogenated polyolefin-styrene block copolymers (SEBS, SEPS), polyolefin-based elastomers, polyurethane-based elastomers, polyester-based elastomers, Rubber-like substances such as polyamide elastomers. As a material of the shielding member (1 A) of the present invention, a mixture (a blend of polymers) or a polymer fusion of an engineering plastic and a thermoplastic plastic, and the tool

314554 ptd Page 11 200401672 V. Description of the invention (6). Mixtures (polymer blends) or polymer fusions of Cheng Plastic with thermoplastics and rubber-like substances are preferred. Examples of the polyfluorene include polytetramethylenehexamethylenediamine (Nylon 4 6), polyhexamethylenehexamethylenediamine (Nylon 6 6), polypyrrolidone (polypyrrolidone, and Inch 4), Polycaprolactam • (ρ ο 1 ycapr ο 1 ac ΐ am, financial theory 6), polyheptalactam (and Inch 7), polycaprylamide (Nylon 8), polynonylamine Amine (Nylon 9), Polyfluorene-Linolide (Nylon 1 1), Polydodecylamine (Nylon 1 2), Polyhexamethylene diamine (Nylon 6 9), Polyamine Hexylenediamine diamine (Nylon 61 0), polyhexamethylene benzene. Benzeneamine (6 i ρ), polyhexylene p-phenylenediamine (Nylon 6T), polyhexylene metaphenylene Diamine, polybutylene metaxylylenediamine, polydiphenol hexamethylene di'fluorene diamine, nylon MSD6, hexamethylene diamine and polyamidamine of η-dodecane diacid- (Nylon 6 1 2), dodecanediamine and η-dodecanedioic acid polyamide (Nylon 1 2 1 2), hexamethylene adipenediamine / caprolactam (Nylon 6 6 / 6), hexamethylene adipamide / hexamethylene phenylenediamine (Nylon 6 6/6 IP), hexamethylene adipamide / hexamethylene p-phenylenediamine (Nylon 6 6/6 T), tris (hexamidine) hexamidine (hexamidine), (Nylon tris (6 2/6 2)), hexamethylene hexamethylene diamine / hexamethylene nonadiamine (Nylon 6 6/6 9), hexamethylenediamine diamine / hexamethylenediamine diamine / caprolactam (Nylon 6 6/6 9/6), poly (caprolactam / hexamethylene Decadiene 丨 Λ 醯 diamine) (Nylon 6/6 1 0), Poly (caprolactam / hexadecyl dodeca diamine) (Nylon 6/612), Nylon MXD6, Poly (caprolactam) Polyamines such as amine / hexylene metaxylylenediamine) (Nylon 6/6 1), aromatic polyamides and the like. Polystyrene baked, including general use, and inch impact for any one, but for inch impact _ polystyrene is the most ideal. Can also be added: styrene-butadiene-styrene

314554 ptd Page 2 of 200401672 5. Description of the invention (7) olefin block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS), α-fluorenylstyrene-butadiene Ene-fluorenyl styrene block copolymer (ck -MeS-Bd-MeS), ο: -fluorenyl styrene-isoprene-fluorenyl styrene block copolymer, styrene-hydrogen-added polyolefin -One or two or more kinds of styrene-based thermoplastic elastomers such as a styrene block copolymer (SEBS). To the polymer fusion, a rubber component may be further added as a rubber modified polymer fusion. Furthermore, for the purpose of improving the plastic properties such as formability, dimensional stability, compressive and tensile strength (elongation strength), etc., and coloring, various additives can be added: calcium carbonate, magnesium carbonate, barium sulfate, Calcium sulphate, sulphite, sulphate, sulphate, sulphate, magnesium hydroxide, magnesium oxide, titanium oxide, iron oxide, zinc oxide, aluminum oxide, silicon dioxide, diatomite, dolomite, gypsum , Talc, clay, asbestos, mica, glass fiber, carbon fiber, calcium silicate, calcium carbonate, bentonite, white carbon, carbon black, iron powder, aluminum powder, stone powder, blast furnace slag, fly ash, cement, thorium oxide and other inorganic Fillers, kapok, hemp, bamboo fibers, coconut fibers, wool and other natural fibers, organic fibers such as polyamide fibers, polyester fibers, polypropylene fibers, viscose fibers, acetate fibers, vinyl chloride fibers, vinylidene chloride fibers, etc. Fiber, asbestos fiber, glass fiber, asbestos fiber, carbon fiber, ceramic fiber, metal fiber, whisker fiber and other inorganic fibers, cotton wool, linen, sisal, wood flour, coconut flour, walnut powder Reinforcing materials such as starch, wheat flour and other organic fillers can also be added with dyes, pigments, dioctyl phthalate (D0P), dibutyl phthalate (DBP, dibutyl phthalate) Plasticizer, oxidation inhibitor, antistatic agent, crystallization accelerator, flame retardant

3] 4554.ptd Page] 3200401672 V. Description of the invention (8) Agents, fire retardants, insect repellents, preservatives, waxes, lubricants, anti-aging agents, ultraviolet absorbers (UV absorbers), chemical hair A foaming agent or a foaming agent such as a capsule-type foaming agent is added. The above-mentioned components may be added in combination of one kind or two or more kinds. When the shielding member (1A) is molded, it is manufactured by any suitable manufacturing method such as vacuum forming, pressure forming, vacuum pressure forming, pressure vacuum forming, pressure forming, and injection molding. For example, Sheets, films or foams made of thermoplastic plastics can be used for vacuum forming or air forming to produce the shielding member (1 A) of the present invention, which can produce a large amount of good yield with extremely high efficiency. In addition, as the material of the above-mentioned shielding member (1 A), in addition to the above-mentioned thermoplastic plastic, thick paper, old cardboard, metal, fiberboard, etc. may be used. The shielding member (1 A) is inserted into the screw hole (22k) before the coating member (2 A). The above shielding member (1 A) is made of plastic or the like. The diameter d! Of the flange (1 3 A) is set to be slightly larger than the diameter d 3 of the screw hole (2 2 A). The piece (1 A) is pressed into the screw hole (2 2 A), and the cylinder body (1 1 A) and the flange (1 3 A) can be fully inserted into the screw hole (2 2 A) after being elastically deformed. After the cylinder body (1 1 A) completely embedded in the screw hole (2 2 A) and the flange (1 3 A) are restored, the ft edge (1 3 A) is locked in the screw hole (2 2 A). Perimeter. In addition, since the length L of the cylindrical body (1 1 A) is set to be slightly longer than the length L2 of the screw hole (22A), the shielding member (1A) passes through the flange portion (12A) and the flange (13A). And it is fixed to the screw hole (22A), for example, it does not fall off even if pressure is applied during spray coating.

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314554 ptd Page 14 200401672 V. Description of the invention (9) The member (2A) in which the shielding member (1A) is inserted into the screw hole (22A) is spray-painted. Since the outer diameter d 2 of the flange (1 3 A) of the shielding member (1 A) is set to be slightly larger than the diameter d3 of the screw hole (22A), the periphery of the screw hole (22A) passes through the flange (1 3 A). And tightly closed, so that the mist (mist-like paint) generated during the coating is prevented from seeping into the screw holes (2 2 A) from the back side. After the coating film is formed as described above, it is heat-treated and dried in accordance with a desired surface effect, and then the shielding member (1 A) is removed. The shield (1 A) is elastically deformed, so it can be easily pulled out and removed. Furthermore, the shielding member (1 A) of the present invention can be reused multiple times. Although one end of the cylindrical body (1 1 A) of the shielding member (1 A) of this embodiment is a bottom, the bottom is not necessarily required, and as shown in FIG. 3, both ends are open cylindrical shielding members. (1 A). 4 to 7 show a second embodiment of the present invention. The shield (1 B) shown in Figs. 4 and 5 is used to protect the air intake port (21B) provided in the bumper (2B) of the car shown in Fig. 6 during painting. An air suction port (21B) is provided on the bumper (2 B), and then a cross bar (23B) and a vertical bar (2 4 B) are arranged on the air suction port (21B). The 4 square through holes (2 2 B, 22B, 22B, 22B) ° shielding member (1B) is formed by a rectangular parallelepiped box type fitted into an air suction port (21B) in the bumper (2B). The main body (1 1B); and four fitting recesses (12B, 12B, 12B, 12B) formed at the bottom of the main body (1 1 B) by being recessed into a square box shape. The periphery of the fitting recess (12B, 12B, 1 2 B, 1 2 B) is set to be slightly smaller than the through hole (2 2 B, 2 2 B,

314554. pid page 15 200401672 V. Circular description of the invention (10) 22B, 22B), and the depth L3 of the fitting recess (12B, 12B, 12B, 12B) is set slightly larger than the through hole (22B, 22B) , 22B, 2 2B). And, around the bottom end of the fitting recess (12B, 12B, 12B, 12B), a flange (13B, 13B, 13B, 13B, 13B, 13B, 13B). The shielding member (1 B) of this embodiment can also be made of the same material and method as those of the first embodiment. When the shielding member (1 B) is to be covered with the air intake port of the bumper (2 B) and repaired 2 1 B), as shown in FIG. 7, the body (1 1 B) of the shielding member (1 B) ) Fit the air suction port (2 1 B) of the bumper (2 B), and at the same time, fit the fitting recess (12B, 12B, 12B, 12B) into the through holes (22B, 22B) of the air suction port (21B) , 22B, 22B). The fitting recess (1 2 B) is made of plastic or the like. The flange (1 3 B) is only slightly larger than the circle of the through hole (2 2 B) of the bumper (2 B). When the edge (13B) is pushed into the through hole (22B), the flange (13B) and the fitting recess (12B) are easily elastically deformed, so that the fitting recess (丨 2 B) is simply fitted into the through hole (22B). In addition, since the depth L3 of the fitting recess (12B) is set to be slightly greater than the depth 14 of the through hole (22B), the fitting recess (12B) is inserted into the through hole (22B), and then the fitting recess (12B) and The flange (1 3B) is restored (elastically), and the flange (1 3 B) is fastened to the peripheral edge of the through hole (2 2 B). Therefore, the fitting recessed portion (1 2 B) can be firmly fixed to the through hole (2 2 B), and the shielding member (1 B) will not fall off even if the spraying pressure during coating is applied.

314554. ptd page 16 200401672 V. Description of the invention (11) The air suction port (2 1 B) is covered with a bumper (2 B) covered with a shield (1 B). Because the circular circumference is slightly larger than the through holes (22B, 22B, 22B, 22B), the flanges (13B, 13B, 13B, 13B) are attached to the fitting recesses (12B, 12B, 12B, 12B) of the shielding member (1B). ), The flanges (13B, 13B, 13B, 13B) reliably cover the periphery of the through hole (22B, 22B, 22B, 22B) with the flange. The bumper (2B) of the fitting shield (1B) is applied by spraying or the like. At this time, the flanges (13B, 13B, 13B, 13B) can stop the mist (mist-like paint) generated during painting from penetrating into the through holes (22B, 22B, 22B, 22B) from the back side. After painting, grasp and pull out the shield (1 B) from the part to be masked to take out the shield (1 B). The fitting recess (1 2 B) and the flange (1 3 B) are elastically deformable, so that the shield (1 B) can be easily taken out. In addition, the shielding member (1 B) of the present invention can be repeatedly used. Furthermore, the shielding member (1 B) of the present invention is not limited to the above-mentioned embodiments, as long as it satisfies the constitutional conditions of the present invention, it can be made in any shape, can be made of any material, and is suitable for the shielding of all members with through holes. (Industrial Applicability) The shielding member according to the present invention can protect the through-hole by covering the surface of a member having the through-hole with certain masking.

314554 ptd 页 page 17 200401672 Brief Description of Drawings-[Brief Description of Drawings] Fig. 1 is a perspective view showing a shielding member and a through hole according to the first embodiment of the present invention. Fig. 2 is a sectional view showing a state in which a shielding member is fitted in a modification of the first embodiment of the present invention. 'FIG. 3 is a cross-sectional view showing a shielding member according to the first embodiment of the present invention. -Figure 4 is a perspective view showing a shielding member according to a second embodiment of the present invention. Fig. 5 is a side view showing a shielding member according to a second embodiment of the present invention. Fig. 6 is a perspective view showing a bumper (covered member) # in a second embodiment of the present invention. Fig. 7 is a side > sectional view showing a state in which the shielding member is fitted in the second embodiment of the present invention. -Fig. 8 is a perspective view showing a conventional example of a shield. Fig. 9 is a cross-sectional view showing a conventional example of a shielding member in an embedded state. Fig. 10 is a perspective view showing a conventional example of a shield. FIG. 11 is a cross-sectional view showing a conventional state of installation of another shielding member. 1 A, 1 B, 9 A, 9 B shield 2 A member #B bumper 1 1 A cylindrical body, fitting part 1 1 B box body, fitting part 1 2 A flange part -1 2 B Fitting recess

314554 ptd page 18 200401672

Brief description of the figure

Claims (1)

200401672 VI. Scope of patent application-1. A shielding member is installed on a shielding portion having a through hole, and a fitting portion embedded in the through hole is formed in the shielding member, and the bottom end of the fitting portion can reach through A flange is formed at the end of the hole and around the bottom end of the fitting portion to cover the periphery of the hole. 314554 ptd Page 20