JPS5940818Y2 - decorative chain - Google Patents

Description

[Detailed description of the invention] This invention is intended to disclose a decorative chain with the purpose of inexpensively mass-producing a chain with a unique, hand-made appearance using a simple molding and assembly method. It is related.

In the past, this type of chain structure was generally provided mainly by casting into split metal molds, etc., so the cost of creating the mold was first added to the product cost. Naturally, the molding of a territory with a large influence and special shape is limited to the extent that can be done by die cutting, and there are naturally limits to the creation of uneven shapes and a sense of mass on the surface of the product. It is something.

In addition, in such molding, when creating elongated rod-shaped parts such as fitting rods or thin support plugs,
These narrow mold cavities or thin mold cavities are not sufficiently filled with pouring metal and are not cooled during casting, causing cavities and the like. This occurred as a noticeable problem, and the molding properties were significantly impaired.

The decorative area used in the chain according to the present invention was specially devised in view of the inconveniences in the prior art, and was formed using a lost wax method instead of the conventional method. The shape of the territory is optimal for the lost wax method, making it possible to form the territory and easily assemble the formed territory.

In other words, the territorial shape constituting the chain can be molded using the lost wax method and exhibits a unique shape, surface shape, or surface texture, which enhances the decorative function of the chain and reduces the mold cost in the molded product. The depreciation cost is particularly low, making it possible to produce a wide variety of products in small quantities at low cost.

Furthermore, when interconnecting territories, it is possible to easily and efficiently connect territories without cutting, bending, or cutting parts of each territory, and without requiring special skill. It is something that

The chain according to the present invention is intended to have various effects on its mechanical properties, and the gist of its structure is that a rod 1 is fitted to the connecting side end of a single chain structure a, and this rod 1 is A clamping rod 2.degree. 2 is provided facing the rod 1 so as to be bent and crimped on the surface of the rod 1 at the upper and lower sides of the rod 1. The fitting hole 3 and a thin wall that is at least the same size as the rod 1 or thinner than this so that the previous clamping rods 2, 2 can be bent and crimped onto the surface of the rod 1 inserted through the fitting hole 3. The support rod 4 is integrally constructed by lost wax molding, and the rod 1 of the next component a' is fitted into the hole 3 of the component a', and the rod 4 is inserted into the hole 3 of the component a'. 2 and 2 are bent and crimped onto one surface of the rod and arranged sequentially, and the following concrete examples and corresponding design changes are planned.

A typical embodiment of the decorative chain according to the present invention will be described below with reference to the attached drawings.In the illustrated example, a chain structure unit a having two series of parallel cross-shaped chains connected at the corners is The opposite rods 1゜5 and rods 4 and 6 are connected to rods 2-
2. 7-7 and rods 8-8 and 9-9 are respectively clamped and integrated, and the rod end of rod 6 is held between rods 7-7,
In addition, the rod 5 is held between the rods 9-9 by 5&'Ct, and the parallel cross members are constructed as one piece.

The unit a, which has a unique shape and is shaped like a continuous parallel cross-frame, is molded using the cost wax method, and there are no problems with die cutting or the creation of thin rod portions or protruding rod portions. , a chain component a having the desired surface characteristics and a rich sense of mass was obtained.

In addition, in the configuration of the unit a, the rod 1 is used as a fitting rod, and the rods 8-8 are configured to be inserted into the hole 3 with a low insertion angle. For this purpose, the rods 2 and 2 are separated above and below the rod 1 and bent and placed opposite each other.

Put the rod 1 into the constituent unit a of the next rank to the constituent unit a'
The rod 2-2 is inserted into the hole 3 in the hole 3, and the rod 2-2 is folded in through the support rod 4, and fixed as a clamping structure on the surface of the rod 1 by crimping, brazing, spot welding, or other appropriate method. This is how it was done.

Also, a single component that follows this. A decorative chain exhibiting the desired hand-made appearance was created by sequentially arranging aN'... in a similar manner.

The decorative chain according to the present invention has the above-mentioned characteristic structure, and the assembly of the structural unit a to each other is a simple process of attaching two rods to each other.
Since the connection is secured by fitting into the hole 3 and crimping the rods 2 and 2, it is possible to remove a part of the chain body as in the previous example, and use unique techniques such as caulking and mounting. This eliminates the need for chain linking and enables even unskilled workers to quickly and accurately connect the chains, and the assembly is highly efficient, and the assembly is inexpensive.

In addition, by creating unit a using the lost wax method, it is possible to easily create a chain with grained surfaces, random uneven surfaces, unique punched structures, and other handmade textures expressed in unit a. This makes it possible to provide a decorative chain that has an extremely luxurious feel compared to the molding cost.

As mentioned above, the characteristic assembly is achieved by molding all of the constituent single materials a with the structure and surface characteristics using the lost wax method, making it particularly inexpensive and complete. .

In other words, in the conventional molding method using a casting mold, it was necessary to create a mold that took into account the extraction of the molded product, which naturally imposed limitations on the shape of the molded product itself. It was considered difficult to create the component a according to the embodiment.

In addition, since such a method requires a unique split mold, the cost of the mold cost for the molded product is particularly high, and the component a according to the embodiment is a thin protruding rod. In the molding process, molding defects such as poor casting, melting, cavities, pinholes, etc. are induced, which significantly reduces the surface properties and strength properties of the component a.

The cost waxing method used in visiting and writing usually involves preparing a silver model known as a mother, placing it in a mold, filling it with silicone rubber, and hardening it to form a rubber mold.
After cutting this and removing the previous model, the molds were matched again,
This mold is filled with lost wax to create a wax mold, and then the molded wax mold is attached to a tree and stood up in another mold, and plaster material is filled and hardened to create a wax mold corresponding to the wax mold. A plaster mold with a casting cavity was created.

The desired product was poured into the plaster mold, and after it had solidified sufficiently, the plaster was destroyed to take out the product, and the component a was separated from the liner section to obtain the desired product. This material is subjected to polishing and other surface treatments as appropriate.

The decorative chain according to the present invention has various structural characteristics brought about by the characteristic structure mentioned above, especially the bottom shape created by the lost wax method, and can be expected to achieve various desired effects of the above-mentioned characteristics. It is something that

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a single component according to the present invention, Fig. 2 is a perspective view showing the assembled state, Fig. 3 is a sectional view of the same, and Fig. 4 is a sectional view showing the assembled state. FIG. 5 is a perspective view of the same. In the figure, 1-2...rods, 3...holes, and 4-9...rods.

Claims (2)

[Scope of utility model registration request] (1) Connection in chain structure unit a - A fitting rod 1 at the side end, and a clamping rod placed oppositely above and below this rod 1 so as to be bent and crimped onto the surface of the rod 1. 2, 2 are provided, and a fitting hole 3 for the rod 1 is provided at the other end of the single body A, and the previous clamping rod is inserted through the fitting hole 3 on the surface of the rod 1. A thin supporting plug 4 having at least the same size as the rod 1 or thinner than the rod 1 is integrally formed by lost wax molding, and the hole 3K in the component a, Structure of the ranking A simple unit a'c is inserted into the rod 1, and it is inserted into the 5, and the rod 4 is passed through the rod 2.
, 2 are bent and crimped onto one side of the rod and are successively arranged. (2) The above-mentioned component a is formed into a cross-shaped structure or a continuous parallel cross-shaped structure, and the rods 1 and 2 are provided at one corner facing each other so as to be orthogonal to each other, and at the other corner. A claim chain characterized in that a hole 3 is provided on an end face parallel to a hanging rod 1, and a thin rod 4 parallel to the rod 1 is provided inside the hole 3.