JPS59197204A - Plastic band for clock - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a plastic watch band that is insert-molded into a band body.

Conventionally, colorful plastic watch bands have been manufactured using colored plastic and have been put into practical use for cheap watches. However, in the conventional method, since the plastic was molded alone, the service life was only about one year, which was a problem in terms of functionality.

In addition, since plastic bands for high-pressure waterproof watches are used under harsh conditions, strength is important, so the band thickness must be made thicker than on the J1 side, which significantly impairs portability and design. Ta. Furthermore, in recent years, as watches have become more fashionable, colored, and shaped, the demand for plastic bands for use in high-end watches has increased. However, conventional methods cannot sufficiently achieve the appearance quality and functional quality required for a high-end watch band.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a watch bandage that is thin, highly decorative, and functionally stable.

The plastic band according to the present invention is characterized in that a thin metal plate having substantially the same shape as the main body of the plastic band is insert-molded into the main body of the plastic band.

Hereinafter, a conventional example and an embodiment of the present invention will be described based on drawing VC.

FIG. 1 is a perspective view of a conventional plastic band. 4
5 is a hole into which a spring rod (not shown) for connection with the watch side (not shown) is inserted, and 5 is a hole for fixing a band. - If used for about a year, cracks may occur in the band fixing hole 5, or the upper surface of the plastic band provided to improve flexibility may occur.
4 #8 gets cut. 2 to 8 show embodiments of the present invention.

Embodiment 1 FIG. 2 is a plan view of a thin metal plate 2 inserted into a plastic band 6. The thin metal plate 2 has almost the same shape as the plastic band 6, but its width is 2 mm smaller. The thin metal plate 2 has a thickness of 10μ to 200μ and is made of metals and alloys such as iron, titanium, aluminum, silver, and gold. 5 indicates a band fixing hole, and 6 indicates a band fixing hole (L) for firmly fixing the thin metal plate 2 to plastic.
'c shows the provided slit section. 7 indicates a notch provided for the purpose of improving the flexibility of the plastic band 3 against bending. The thin metal plate 2 thus formed is used as a mold of an injection molding machine, and is insert-molded into vinyl chloride, urethane rubber, etc., and fixed in a plastic band.

FIG. 3 is a perspective view of a completed plastic band with metal thin plate cane inserts according to the first embodiment of the present invention. 1
indicates a horizontal hole provided in the side surface of the plastic band at the same position as the exposed portion of the thin metal plate 2 on the band surface. Providing side holes 1 of various shapes has the effect of improving the flexibility of the band body against bending and improving wearability when the band is worn on the arm. 6 is made of a material such as vinyl chloride resin or urethane rubber. 2a shows a thin metal plate partially exposed in various shapes on the upper surface of the plastic band 6. By partially exposing the thin metal plate in this way, a metal-like appearance is created. A plastic band with a textured appearance is obtained, and the appearance is close to that of a high-end product (it is possible to obtain a quality that is sufficient for practical use).

FIG. 4 is a plan view of the plastic band 3 according to the invention. Since the thin metal plate 2 having almost the same shape as the plastic band is inserted, the band fixing hole 5 is prevented from cracking, the groove 8 on the top surface of the band is cut, etc. during use of the band.

5 shows a sectional view taken along the line AA of the plastic band 6 shown in FIG. 3, and FIG. 6 shows a sectional view taken along the line AA of the plastic band 60 shown in FIG. 3. Since the plastic band of the present invention has such a cross-sectional structure, a plastic watch band with excellent flexibility and bending strength can be obtained.

Embodiment 2 Embodiment 2 is a plastic band having the same structure as Embodiment 1, but is characterized in that the thin metal plate 2 to be inserted has a pattern and is surface-treated.

FIG. 7 is a plan view of the thin metal plate 2 containing the insert.

Reference numeral 10 indicates a thin metal plate having the same shape and thickness as in FIG. 2 of Example 1. Reference numeral 10a indicates a patterned portion formed with a pattern N on the surface of the thin metal plate 100 by stamping, etching, electroforming, etc. The thin metal plate 1D is made of metals and alloy materials such as iron, copper, 22K, titanium, aluminum, silver, and gold, and its surface is subjected to surface treatments such as electroplating, PVD, anodizing, and nitriding. There is.

FIG. 8 is a perspective view of a plastic band completed by insert molding the metal thin plate 10. The patterned thin metal plate 10 with various surface treatments was partially exposed, and a high quality plastic band with rich design was obtained.

As explained above, according to the present invention, a thin metal plate having almost the same shape as the main body of the plastic band is insert-molded into the plastic band, and on the top surface of the plastic band,
By partially exposing the metal thin plate in various shapes, it is possible to provide a thin plastic watch band with excellent decorativeness and functional stability6. The effects are enormous.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional plastic band, FIGS. 2 to 8 show an embodiment of the present invention, FIG. 2 is a plan view of a thin metal plate in an embodiment of the present invention, and FIG. FIG. 2 is a perspective view of a plastic band with a thin metal plate inserted therein, FIG. 4 is a plan view of a plastic band according to the present invention, FIG. 7 is a plan view of a thin metal plate according to another embodiment of the present invention, and FIG. 8 is a sectional view of the plastic band shown in the figure.
FIG. 2 is a perspective view of a plastic band in which the thin metal plate shown in the figure is inserted. 1... side hole, 2... thin metal plate, 3-...
・Plastic band, 4...hole, 5...
... Band fixing hole part, 6... Slit part, 7.
...Notch, 8...Groove, 10...
・Thin metal plate, 10a...pattern. 71 questions 72 2 ~ 4 2 3 16 questions - stop. 77 questions 80

Claims (1)

[Scope of Claims] (1) Insert molding is performed on a metal i9 plate band main body having approximately the same shape as the main body of a plastic band, and the metal thin plate is partially exposed in various shapes on the upper surface of the main body of a plastic band. Plastic watch band. (2) A plastic watch band according to claim 1, characterized in that a side hole is provided in the side surface of the band body at the same position as the exposed portion of the thin metal plate. (3i) The plastic band for a watch according to claim 1, characterized in that the metal rib plate has several slits. (/I) The thin metal plate has a plurality of band fixing holes.'
i'1. A glass band for a watch according to claim 1, which has a + sign. (5) The plastic band for a watch according to item 1 of the scope of the patent application, wherein the metal plate has a plurality of notches. (6) The plastic band for a watch according to claim 1, characterized in that a pattern is provided on the thin metal plate. (7) The plastic band for a watch according to claim 1, wherein the thin metal plate has a thickness of 200 μm to 10 μm and is made of metals and alloys of iron, copper, nickel, titanium, aluminum, silver, and gold. (8) The plastic band for a watch according to claim 7, wherein the thin metal plate is subjected to anodizing, plating, nitriding, or PVD treatment.