JP2530679Y2 - Decorative screw - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative screw having a decorative pattern formed on a head thereof, such as a round screw or bolt.

[0002]

2. Description of the Related Art A wide variety of screws are manufactured according to applications.
A round head screw with a head whose outer diameter is about twice the screw part,
There are countersunk screws and pan screws. Slots or cross holes are formed in the heads of these screws, and iron-made screws are generally entirely plated with rust-proof metal. This type of screw has a metallic hue exposed on the head in a state of being screwed into the object, and makes the object and the background feel poor due to poor aesthetics. In addition, metal screws generally have a small number of colors and are generally different from the surrounding colors, and thus have a disadvantage of giving a sense of incongruity. Therefore, recently, a color screw that enhances the decorativeness by applying a color coating such as red or blue to the head is commercially available.

[0003]

However, the above-mentioned conventional color screw is unappealing because it is merely painted in one color such as red or blue, and a color according to an object is selected and used. Even in this case, it was difficult to match with the surrounding colors, and the decoration was inferior. The purpose of the present invention is to solve the above problems.

[0004]

In order to achieve the above-mentioned object, a decorative screw according to the present invention comprises a coating film or a plating film formed first on the entire head of the screw, and a coating film or a plating film formed on the coating film or the plating film. It features a surface pattern formed by polishing a part to expose a metal color, and a protective film provided on the entire screw head as a final treatment. In addition, another decorative screw is provided with a concavo-convex pattern formed on the entire head of the screw as pre-processing, a coating film or plating film covering the entire concavo-convex pattern in a subsequent process, and a coating film or plating film covering the same. And a ground portion formed by polishing a convex portion of the roughened pattern to expose a metal color. It is preferable to provide a rust prevention film on the entire head of the screw as the final treatment.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 are process diagrams showing a method for manufacturing a decorative screw according to the present invention. The decorative screw of the present invention is applied to various screws and bolts. In this example, a case where a surface pattern is formed on a round screw will be described. The round head screw 1 generally has a head portion 3 having a cross hole 4 formed therein as shown in FIG. 1A, and an outer diameter of the screw portion 2 shown in FIG. Popular products that are made of iron have been rust-proofed in advance.

First, the head 3 of the screw 1 is subjected to a surface treatment. As this surface treatment, various colors are applied to the head 3 or the entire head 3 is immersed in a plating tank (not shown). Thereby, the coating film 5 is formed on the head 3. When plating is performed, a metal plating layer is formed. Next,
The surface is partially polished to form a surface pattern. As this polishing method, a manual operation or a polishing apparatus is used. In the case of the manual operation, a file and a vise are used. At this time, cover with a cloth or the like and sandwich it in a vice so that the pitch of the screw portion 2 is not impaired, and file a part of the head 3 with a file to cut it, as shown in FIG. A simple curve 6 is formed. Thereby, as shown in FIG. 2B, the coating film 5 or the metal plating layer applied to the surface of the head 3 is peeled off, and a part of the background is exposed. Thereafter, the head 3 is subjected to a rustproofing treatment. As this rust prevention treatment, a transparent rust preventive material is applied, or the entire head 3 is immersed in a treatment tank (not shown). Then, FIG. 3 (a),
As shown in (b), a rust prevention film 7 is formed on the head 3 of the round head screw 1. In the case of stainless screws, clear coating is performed. Thus, the head 3 is given an arbitrary color and the curved pattern 6 is formed, so that the round head screw 1 with a beautiful design is obtained. Also, since the pattern is attached even with metal plated,
An interesting round screw 1 can be provided.

FIGS. 4 and 5 show a polishing apparatus used for manufacturing a decorative screw according to the present invention. FIG. 4 is a front view of a metal surface polishing machine, and FIG. 5 is a front view of a grinder.
In this manufacturing method, the head 3 of the round screw 1 after the coating film 5 or the metal plating layer is formed is polished by a polishing device to form a surface pattern. And the like are the same as those in the above-described embodiment, and therefore, redundant description will be omitted. The metal surface polishing machine 41 shown in FIG. 4 has a motor 43 attached to a device main body 42 fixed to a gantry 40, and a pulley provided on a shaft 44 of the motor 43.
A polishing belt 47 is stretched between the pulley 45 and a pulley 46 rotatably supported.

In a grinder 51 shown in FIG. 5, a motor 53 is attached to a device main body 52 fixed to a gantry 50, a rotating grindstone 55 is mounted on a shaft 54 of the motor 53, and a cover 56 that covers the rotating grindstone 55 is a device. The structure is fixed to the main body 52. When a pattern is formed using the metal surface polishing machine 41 and the grinder 51, the screw portion 2 of the round screw 1 is gripped, and the motor 43 or 53 is used.
Is rotated, and the head 3 is brought into contact with the polishing belt 47 or the rotary grindstone 55 for polishing. At this time, head 3
7 can be formed by performing the seven basic operations that apply to the above, and various patterns as shown in FIG. 8 can be drawn by applying this operation.

FIG. 6 is a front view of an automatic lathe used to manufacture the decorative screw according to the present invention. Also in this case, the head 3 of the round screw 1 after the coating film 5 or the metal plating layer is formed is polished in the same manner as in the above-described example, and the same steps will not be described repeatedly. The automatic lathe 61 includes:
The workpiece is sandwiched and automatically polished. A microcomputer is built in an operation panel provided near the device main body 62, and an operation setting unit is provided. In the center of the device body 62, the motor 6
3 is attached, and a chuck 64 is mounted on a shaft of the motor 63 via a coupling. The screw portion 2 of the round screw 1 is sandwiched by the chuck 64 as a processing material. Around the motor 63, four tool holders 65 to
68 are provided with an angle difference of 30 degrees. The tool holders 65 and 68 are arranged on the table so as to be able to move forward and backward, and the tool holders 66 and 67 are moved forward and backward by a rotating mechanism 70. To these cutting tool holders 65 to 68, cutting tools 71 to 74 or cutting tools according to the pattern formed by polishing the head 3 are attached.

When a surface pattern is formed by using the automatic lathe 61, the operation sequence of each section is programmed in advance in a microcomputer and set so that polishing can be performed automatically. First, while holding the screw part 2 of the round screw 1 in the chuck 64, each of the bite holders 65-6
In FIG. 8, cutting tools 71 to 74 necessary for forming a straight line, a curve, a point, a circle, and a complicated pattern are attached and held.
Next, when the operation of the automatic lathe 61 is started, the motor 6
3 drives and the head 3 rotates. Then, the tool holder 6
Any one of 5 to 68 advances, and the cutting tool contacts the head 3. At this time, the operation order of the byte holders 65 to 68, the operation range at the time of retreat, the head 3 and the bytes 71 to 74
Is controlled based on a control signal from the microcomputer. Thereby, the head 3 of the round screw 1
In this case, a basic pattern as shown in FIG. 7 can be formed, which is equivalent to the case where the round screw 1 is gripped and polished as described above. In addition, various patterns can be drawn by the combination control of the basic operations as shown in FIG. In particular, according to the automatic lathe 61, the same work can be continuously performed, so that a large number of products of various types can be manufactured.

FIG. 7 shows a surface pattern formed by the above-described basic operation. The pattern 8 in FIG.
The pattern 9 in (b) is a left and right operation, and the pattern 10 in (c) is an oblique operation. When the pattern 11 in (d) stops at a curve, the pattern 12 in (e) stops at one point, the pattern 13 in (f) moves in an S-shape, and the pattern 14 in (g) moves in a circle. It is according to.

FIGS. 8A to 8D are surface patterns drawn by combining the above basic operations. FIGS.
(E) to (g) of FIG. 7 show examples of patterns formed on other screws, and (h) show examples of complicated patterns. The pattern 15 in FIG. 8A is a representation of a river, and is obtained by forming two curves that pass almost at the center between opposing peripheral edges.
The pattern 16 in (b) expresses a wave, and a curve is provided from a state where one point is formed substantially at the center toward the periphery. This operation is repeated three times so that the peripheral side is widened. The pattern 17 in (c) represents a star in the night sky. The operation of stopping at one point is repeated several times, and a number of points having different sizes are provided. The pattern 18 in (d) represents the alphabet A. After forming two straight lines having different directions by an oblique operation, short right and left straight lines are provided at the center.

The pattern 24 shown in FIG. 8 (e) expresses the numeral 5 on the head 22 of the flat bolt 20 with a slot 23. After forming left and right straight lines near the periphery, a short vertical line is formed. The straight line is made continuous. Then draw a circle following this straight line and stop halfway. The patterns 27 and 28 in (f)
It expresses a river and a star on the head 26 of the hexagonal bolt 25. Two straight lines are formed across the periphery and two points are provided. The patterns 32 and 33 shown in (g) represent a star on the head 31 of the cheese bolt 29.
After the main formation, points are provided between the intersecting lines.
Reference numerals 21, 25, and 30 denote respective bolt portions. FIG.
The pattern 19 of (h) expresses a human figure on the head 3 of the round screw 1, and draws the head, body, and limbs by applying the operation up to now.

The screws and bolts formed in this way are rich in decorativeness and can be used not only as fasteners but also as accessories. For example, when a natural feature such as a river, a wave, or a star is designed on the head 3 of the round screw 1, it is also used for restaurants, restaurants, inns, hotels, apartments, etc., so that it can be used for layouts inside and outside the building. It can be used for decorative purposes and give great added value. In addition, an article with alphabets, numerals, and the like may be used as teaching materials for elementary schools, and may be sold as initials at stationery stores and accessory stores. In particular, the provision of different sizes and designs greatly expands the range of use. Furthermore, in the example where the figure of a person is designed, it can be used as an indicator to guide the type of competition in a sports facility, and it should be attached to a general facility where it is necessary to distinguish between men and women, the elderly and children. You can also.

[0015] In addition to the above embodiment, if a nighttime paint is applied to the head of a large-sized screw or bolt and signs such as arrows are formed by polishing, it is suitable for use in hospitals and nursing homes. is there. For example, if an object with an arrow on its head is arranged in a corridor of a hospital or the like, when an emergency occurs at night, the arrow appears to be raised, so that it serves as a safe guide sign in the evacuation direction. On the other hand, in the daytime, tasteless and dry corridors and wall surfaces look good.

FIG. 9 is a view for explaining a decorative screw having an uneven pattern according to another embodiment of the present invention. In order to manufacture this decorative screw, first, as a pretreatment, unevenness as shown in FIG. 9A is formed on the entire head of the screw. This unevenness is different from the cross hole of the screw head, and may be formed by, for example, metal molding or machining. Thereafter, the head of the screw is subjected to a coating process or a plating process. By this processing, a coating film or a plating film is formed on both the convex portion and the concave portion of the screw head. Next, all or a part of the convex portion of the screw head is polished. This process exposes the ground color of the screws on the polished surface of the protrusions, while the other parts remain painted, so that the polished protrusions and the colored recesses are mixed in a well-balanced manner. Together, a preferable three-dimensional pattern is formed. Finally, a transparent rust inhibitor is applied, or the entire screw head is immersed in a treatment tank to form a rust preventive film.

As described above, according to the present invention, various patterns including a three-dimensional pattern can be formed on the screw head, so that a screw matching the object can be provided.
In other words, by selecting and installing the optimal screw,
The surrounding environment can be improved. In addition, since a transparent rust-proof film is formed on the head, there is an advantage that the pattern is protected and a long life is maintained. In the above embodiment, the case where various patterns are mainly formed on the round screw has been described. However, it is needless to say that various patterns can be drawn on other screws. Screws, round countersunk screws, flat screws, round flat screws, pan screws, bind screws, truss screws, and the like. Also, the cap nut and the bolt can be widely applied to various kinds. Further, the screws and bolts are not limited to those made of iron or other metals, but can be applied to those made of synthetic resin, and needless to say, it is not necessary to perform a rust-preventing treatment on those which are not likely to rust.

[0018]

As described above, the decorative screw according to the present invention is a highly decorative screw having a three-dimensional or two-dimensional pattern formed thereon. You can select and install screws with matching colors and patterns.

[Brief description of the drawings]

FIG. 1 is a process explanatory view showing a surface treatment of a decorative screw according to the present invention.

FIG. 2 is a process explanatory view showing a polishing process.

FIG. 3 is a process explanatory view showing a rust prevention treatment.

FIG. 4 is an explanatory view of an operation using a metal surface polishing machine.

FIG. 5 is an explanatory diagram of an operation using a grinder.

FIG. 6 is a work explanatory view using an automatic lathe machine.

FIG. 7 is an example of a surface pattern formed on the head of a round screw based on a basic operation.

FIG. 8 is an example of a surface pattern formed on a head of a screw and a bolt based on an applied operation.

FIG. 9 is a view for explaining another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Screw 3 Head 5 Paint film 6 Surface pattern 7 Rust prevention film

Claims (3)

(57) [Scope of request for utility model registration] 1. A coating film or plating film formed first on the entire head of a screw, a surface pattern obtained by polishing a part of the coating film or plating film to expose a metal color, A decorative screw comprising a protective film provided on the entire head of the screw. 2. A concavo-convex pattern formed on the entire head of a screw as a pre-treatment, a coating film or a plating film covering the entire concavo-convex pattern in a subsequent process, and a concavo-convex pattern covered by the coating film or the plating film. A decorative screw comprising: a ground portion formed by polishing a convex portion of a pattern to expose a metal color. 3. A concavo-convex pattern formed on the entire head of the screw as a pretreatment, a coating film or a plating film covering the entire concavo-convex pattern in a subsequent process, and a concavity and convexity covered by the coating film or the plating film. A decorative screw comprising: a ground portion formed by polishing a convex portion of a pattern to expose a metal color; and a rust-preventive film provided on the entire head of the screw as a final treatment.