JP6030331B2 - Resin-coated long body - Google Patents

Description

  The present invention relates to a resin-coated long body in which a coating resin layer made of a synthetic resin is coated on the outer surface of a metal core.

  As a resin-coated long body in which a coating resin layer is coated on the outer surface of a metal core material, the present applicant forms a coating resin layer on the outer surface of the metal core material using a synthetic resin, A non-coated portion not provided with a coating resin layer is provided in part, and a dovetail-shaped retaining groove is provided near the boundary between the edge of the coating resin layer of the core material and the non-coated portion. A resin-coated long body in which a part of the coating resin layer is inserted into the retaining groove, the coating resin layer is provided to cover the opening of the retaining groove, and the opening of the retaining groove and the coating resin It is provided at a position different from the edge of the layer, the core material is rectangular in cross section, a coating resin layer is provided outside the three surfaces of the rectangle, and the remaining one surface is an uncoated portion. A long resin-coated body is proposed (Patent Document 1).

JP 2008-213198A

  However, in the conventional resin-coated long body as described in Patent Document 1, when the core material has a rectangular cross section, a part of the coating resin layer enters the retaining groove, so that Even if an uncoated part that is not coated with resin is provided on the part, it is possible to effectively reduce the risk that the coated resin layer will come off, but the core material is not rectangular in cross section, but has an indented shape on the outer surface If the resin layer is cooled to room temperature after the synthetic resin is coated on the outer surface of the core material, including the inwardly recessed portions, by extrusion molding, it will shrink to the inwardly recessed portions. There arises a problem that the coated coating resin layer is separated from the outer surface of the core material.

  In order to solve this problem, it is conceivable to apply an adhesive between the coating resin layer and the core material so that they are not separated from each other. It is difficult to say that it is efficient.

  The present invention has been made in view of the problems as described above, and even if the core material has an inwardly recessed shape on the outer surface, the coating resin layer is less likely to be separated from the core material and is manufactured. It is intended to provide a long resin-coated body that can be easily carried out.

In order to achieve the above object, the present invention is configured as follows.
That is, the long resin-coated body according to the present invention covers a metal core material having a concave surface recessed inward on the outer surface along the longitudinal direction, and an outer surface including the concave surface of the core material. A resin-coated long body provided with a coated resin layer, wherein dovetail-shaped retaining grooves are formed inwardly on the recessed surface of the core material, and the recessed surface has two indented surfaces. The retaining groove is formed at a corner portion where the two inclined surfaces meet, and a part of the coating resin layer enters the retaining groove. To do.

In the resin-coated elongated body according to the present invention, both of the two inclined surfaces may be formed in a planar shape.

  According to the resin-coated elongated body according to the present invention, a dovetail-shaped retaining groove is formed in the concave surface of the metal core member toward the inside of the core material, and the covering resin layer is formed in the retaining groove. Even if the coating resin layer having a larger thermal shrinkage rate than the metal core material is cooled to room temperature and contracts, it is locked by the coating resin layer that has entered the retaining groove, The covering resin layer does not separate from the core material on the indented concave surface.

  Moreover, according to the resin-coated long body according to the present invention, the base end portion is provided with an uncovered portion where no cover resin layer is provided, and the uncovered portion can be attached to the structure using a mounting bracket. A curved surface in which a mounting groove is formed and a hollow shape projecting in a hollow shape is formed from the base end portion toward the distal end, and the upper surface of the hollow shape portion is inclined downward in a curved shape When the resin-coated long body is attached to a structure, the lower surface is a concave surface that is recessed inward, and the outer surface of the hollow portion including the concave surface is coated with a coating resin layer. The core material can be attached in close contact with the structure, the attachment can be made robust, and when the resin-coated long body is attached to the structure and viewed from the front, it is formed on the lower surface. Due to the effect of the concave surface, The thickness of the surface can not be seen thick, preferably it is possible to improve the appearance.

It is sectional drawing which shows one Embodiment of the resin coating | coated elongate body which concerns on this invention. It is an expanded section which shows the A section of the resin coating | coated elongate body shown in FIG. It is an expanded section which shows the B section of the resin coating | coated elongate body shown in FIG. It is sectional drawing which shows an example of the attachment to a structure of the resin coating | coated elongate body shown in FIG. It is sectional drawing which shows an example at the time of attaching the resin coating elongate body shown in FIG. 1 to multiple structures as a louver.

BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment according to the present invention will be specifically described below with reference to the drawings.
P is a resin-coated long body, 1 is a hollow aluminum core material having the same cross-section formed continuously long, and 2 is formed along the longitudinal direction of the core material 1. In addition, a concave surface 3 that is recessed inwardly, 3 is a coating resin layer in which the outer surface including the concave surface 2 of the core material 1 is coated with a synthetic resin by extrusion molding, 4 is a base end portion of the core material 1, Reference numeral 5 denotes an uncoated portion where the coating resin layer 3 is not provided, 6 is a structure to which the resin-coated long body P is attached, and 7 is a mounting bracket used to attach the resin-coated long body P to the structure 6. .

  The core material 1 is provided with an uncoated portion 5 on which the covering resin layer 3 is not provided on the base end portion 4 side. A mounting groove 51 that can be attached to the top is formed, and a hollow-shaped portion 11 that extends in a hollow shape is formed from the base end portion 4 toward the tip, and an upper surface of the hollow-shaped portion 11 is The curved surface 12 is inclined downward in a curved shape, and the lower surface thereof is a recessed surface 2 that is recessed inward along the longitudinal direction.

  That is, the bottom surface of the hollow-shaped portion 11 has a flat portion 111 formed on the base end portion 4 side and the tip end side, and the base end side rises obliquely upward from the flat portion 111 on the base end portion 4 side toward the tip end. An inclined surface 21 is formed, and a distal-side inclined surface 22 that rises obliquely upward from the flat portion 111 on the distal end side toward the proximal end side is formed, and the proximal-side inclined surface 21 and the distal-side inclined surface 22 The formed inwardly recessed surface of the core material 1 is the recessed surface 2. Thus, by making the lower surface of the hollow-shaped part 11 into the recessed surface 2, the thickness of the upper surface and the lower surface of the resin-coated long body P does not appear to be thick, and it is refreshed and the aesthetics can be improved.

  In addition, although the said base end side inclined surface 21 and the front end side inclined surface 22 are formed in planar shape in this form, a curved surface may be sufficient, In that case, the said base end side inclined surface The corner where the surface 21 and the tip side inclined surface 22 meet is not formed with an angular shape, but is formed in a curved shape.

  A dovetail-shaped retaining groove 23 is formed toward the inside of the core 1 at the corner where the base-side inclined surface 21 and the distal-side inclined surface 22 meet, and the extrusion or the like The outer surface of the core material 1 is coated with a synthetic resin by thermoforming so that the molten synthetic resin enters a part of the coating resin layer 3 into the retaining groove 23 in the mold.

  Two retaining grooves 24 are also provided on the outer surface of the core material 1 near the boundary between the coating resin layer 3 and the non-coated portion 5 on the base end side, and are formed on the concave surface 2. Similar to the retaining groove 23, a part of the coating resin layer 3 enters the retaining groove 24. The opening 241 of the retaining groove 24 formed on the base end side is covered with the coating resin layer 3, and the terminal end 31 on the base end side of the coating resin layer 3 is the core 1 that is both ends of the non-covering portion 5. It is made to correspond with the corner | angular part 14 of the base end side. The retaining groove 24 is opened at a position slightly on the tip side from the corner portion 14 of the core material 1, so that the terminal end 31 of the coating resin layer 3 is located at a position different from the opening 221.

  The retaining groove 23 formed on the recessed surface 2 and the retaining groove 24 formed on the base end side have substantially the same shape, both of which are inside the widths of the openings 231 and 241. The inner portions 232 and 242 are formed in a so-called dovetail shape, which is wider, so that a part of the coating resin layer 3 that has entered is less likely to come out of the retaining grooves 23 and 24, and the inner portions 232 and 242. In addition, since the trapezoidal shape with the bases of the opening portions 231 and 241 that are gradually widened from the heel side to the front side, a part of the coating resin layer 3 is further prevented from coming off, and the coating resin layer 3 is formed as a core. It is difficult to come off from the material 1. In the hollow portion of the core material 1, ribs 15 are provided so as to cut the cross-sections at substantially equal intervals to increase the strength, and the lid body is screwed to cover the end of the core material 1 of the tubular body. A screw hole 16 for fastening is provided integrally.

The coating resin layer 3 coated on the outer surface of the core material 1 is provided on the recessed surface 2 so as to cover the outside of the retaining groove 23, so that synthetic resin is formed by thermoforming such as extrusion molding or injection molding. When the molten resin is caused to flow into the retaining groove 23 by melting and the coating resin layer 3 is formed, it is not necessary to make the inner surface of the mold complicated, and the design of the equipment related to the formation is easy. Become.
In addition, in the retaining groove 24 formed on the base end side, the terminal 31 of the coating resin layer 3 and the opening 241 of the retaining groove 24 are located at different positions, so that the resin during cooling It is possible to avoid troubles occurring after molding such as shrinkage from being concentrated in the vicinity of the opening 241 of the retaining groove 24, making it possible to carry out the manufacturing simply by setting the conditions at the time of manufacturing relatively gradual.

  The covering resin layer 3 may be formed using an appropriate synthetic resin, but it is preferable to use a thermoplastic synthetic resin that can be melted during thermoforming and can flow into the dovetail-shaped retaining groove 23. Polyethylene, polypropylene, ABS resin, AAS resin, polyvinyl chloride resin, or the like can be used. Further, if a thermoplastic synthetic resin having adhesiveness to a metal material is used as the synthetic resin used for forming the coating resin layer 3, the surface of the core material 1 and the coating resin layer 3 are bonded, and the coating resin layer 3 is further bonded. It can be made difficult to come off. Examples of the thermoplastic synthetic resin having adhesiveness to a metal material include α-olefins such as EVA (ethylene vinyl acetate copolymer), PVB (polyvinyl butyral), modified polyethylene modified with maleic anhydride, modified polypropylene, EAA resin and the like. And an unsaturated carboxylic acid copolymer can be used. The coating resin layer 3 is made of silica powder, mica powder, talc, glass fiber, calcium carbonate, aluminum hydroxide, calcium hydroxide, clay, mineral, microballoon, metal powder, wood powder, cellulose powder such as pulp, and the like. You may mix | blend a filler suitably.

  The core material 1 is made of metal and is not particularly limited as long as the retaining surface 23 is provided on the recessed surface 2, and may be formed using a metal material such as steel, aluminum, stainless steel, zinc, or titanium. However, in order to provide the dovetail-shaped retaining groove 23, it is preferable to form the metal by extrusion molding, and since it is easy to extrusion and lightweight, it is formed using aluminum or an aluminum alloy. Is preferred. Even when a metal material is used, the surface of the core material 1 is provided with fine irregularities having a maximum surface roughness of about 0.01 to 0.1 mm to increase the contact area with the coating resin layer 3. At the same time, it is preferable to prevent the displacement of the coating resin layer 3 from the core material 1 by preventing the displacement due to the shrinkage of the coating resin layer 3.

  The uncovered portion 5 is provided with a dovetail-shaped mounting groove 51, and a mounting bracket 7 is slidably inserted into the mounting groove 51, and a threaded portion 72 projecting from a bracket main body 71 of the mounting bracket 7. The nut N is screwed onto the structure 6 so that the resin-coated long body P is attached to the structure 6. Flat contact surfaces 52 are formed on both sides of the mounting groove 51. When the flat contact surface 52 is attached to the flat structure 6, the flat surface of the structure 6 and the contact surface 52 are in contact with each other so that the mounting state is stable. However, one surface of the core material 1 is formed as an uncoated portion 5, and the terminal end 31 of the coating resin layer 3 is located at the same position as the contact surface 52 or at the center side. The covering resin layer 3 does not intervene between the material 1 (contact surface 52), and even if the bolt B is tightened, the bolt B is prevented from loosening due to creep deformation of the covering resin layer 3, and for a long time. The resin-coated elongated body P is stably attached to the structure 6.

  As shown in FIG. 5, the resin-coated long body P according to the present invention is stretched over a structure 6, which is a vertical rail attached to a wall surface in a pair of left and right, and a plurality of resin-coated long bodies P are arranged in parallel at intervals up and down. In order to enhance the appearance of the exterior, the coating resin layer 3 of the resin-coated elongated body P is not limited to a synthetic resin, because it is preferably used mainly as a louver for decorating wall surfaces and the like. A filler as described above may be blended, and for example, metal powder may be blended to give the appearance a metallic feel, or wood powder may be blended to make the feel of a wood texture.

DESCRIPTION OF SYMBOLS 1 Core material 11 Hollow shape part 111 Flat part 12 Curved surface 14 Corner | angular part 15 Rib 16 Screw hole 2 Recessed surface 21 Base end side inclined surface 22 Front end side inclined surface 23 Retaining groove 231 Opening part 232 Inner part 24 Retaining groove 241 Opening Part 242 Inner part 3 Covered resin layer 31 Terminal 4 Base end part 5 Non-covered part 51 Mounting groove 52 Abutment surface 6 Structure 7 Mounting bracket 71 Bracket main body 72 Screw part P Resin-coated long body B Bolt

Claims (2)

A resin-coated long length comprising a metal core material having a concave surface recessed inward on the outer surface along the longitudinal direction, and a coating resin layer coated on the outer surface including the concave surface of the core material A dovetail-shaped retaining groove is formed inward of the core material, and the concave surface is formed by two inclined surfaces, and the two A resin-coated long body , wherein the retaining groove is formed at a corner where the inclined surfaces meet, and a part of the coating resin layer enters the retaining groove. 2. The resin-coated long body according to claim 1, wherein each of the two inclined surfaces is formed in a planar shape.

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