JPS5985335A - Manufacture of watch band - Google Patents

Abstract

PURPOSE:To obtain a beautiful finish state by deforming a flexible band formed by use of a shape storage alloy, inserting it successively into a hole of a lot of frames in a state that its sectional area is reduced, and thereafter, expanding and reloading the sectional area of the flexible band, and fixing easily the flexible band and the frame. CONSTITUTION:A flexible band 1 formed by a linear shape storage alloy 2 and a conventional linear spring material 3 is placed under a low temperature, it is deformed by giving tensile force, and the sectional area occupied by the flexible band 1 is reduced. In this state, the flexible band 1 is inserted successively into a hole 5 of a lot of frames 4, and a tail frame 6 is connected to the end part of the flexible band 1. Subsequently, these flexible band 1 and frames 4, 6 are placed under a normal temperature, the sectional area occupied by the flexible band 1 is expanded and reloaded by reloading of the shape of the alloy 2, the alloy 2 is welded with pressure to the inside face of the hole 5 of each frame 4, and both of them are fixed. In this case, the flexible band 1 can be formed by only the alloy 2.

Description

[Detailed description of the invention] The present invention relates to a method for manufacturing a watch band.

Conventionally, watch bands have been provided in which a flexible band is sequentially inserted into holes formed in each of a number of pieces, and each piece is then crushed and fixed to the flexible band.

With this watch band, it is difficult to crush the pieces,
It takes time to manufacture. Furthermore, since the piece is crushed after the flexible band is inserted into the piece, it is not possible to finish the piece in advance, making it difficult to obtain a beautiful finish. Furthermore, when the piece is crushed, the hole in the piece extends laterally, making the remaining flesh unstable.The object of the present invention is to simplify the work of fixing the flexible band and the piece. Another object of the present invention is to provide a method for manufacturing a watch band in which the pieces can be finished in advance to obtain a beautiful finish, and the shape of the pieces can be stabilized. .

In order to achieve the above object, the present invention knits a flexible band using a shape memory alloy at least in part, deforms the flexible band, and reduces the cross-sectional area occupied by the flexible band. The pieces are sequentially inserted into holes formed in each piece, and after insertion, the cross-sectional area occupied by the flexible band is expanded and restored by shape-memory alloy shape restoration, and the flexible band is brought into pressure contact with the inner surface of the hole of each piece, thereby fixing both pieces. That is.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the flexible band 1 is made up of a linear shape memory alloy 2 and an ordinary linear spring material 6. Shape memory alloy 2 has the property that its crystal structure changes depending on the temperature, and after being formed into a shape at room temperature, it is heated at a low temperature (for example -3
0℃) Even if the shape changes, it returns to its original shape when it is brought to room temperature again.

Therefore, even if the shape memory alloy 2 is deformed to reduce the cross-sectional area occupied by the flexible band 1 at low temperatures by knitting the flexible band 1 (see Figs. 2 and 3), Diagram A, B
(see FIG. 1 and FIGS. 4A and 4B), the cross-sectional area occupied by the flexible band 1 can be expanded and restored by restoring the shape of the shape memory alloy 2 at room temperature.

The piece 4 has a hole 5 through which the flexible band 1 is inserted.
is set to be slightly smaller than the cross-sectional area occupied by the flexible band 1 after its shape is restored at room temperature. The lower portions of both sides of each piece 40 are formed so that the width gradually becomes narrower as they reach the lower end.First, as shown in FIG. The flexible band 1 is then deformed as shown in FIG. 2 by applying a tensile force or the like to reduce the cross-sectional area occupied by the flexible band 1. In this state, the flexible band 1 is transformed into the shape shown in FIGS. 3A and B. The tail pieces 6 are connected to the ends of the flexible band 1 by sequentially inserting them into the holes 5 of a large number of pieces 4.

After that, place the flexible band 1 and the pieces 4 and 6 at room temperature,
FIG. 4A due to shape memory alloy 2 shape restoration.

As shown in B, by enlarging and restoring the cross-sectional area occupied by the flexible band 1, the shape memory alloy 2 can be brought into pressure contact with the inner surface of the hole 5 of each piece 4, and both can be fixed. At this time, shape memory alloy 2
As the shape of the flexible band 1 is restored, the length of the flexible band 1 becomes slightly shorter.
Each piece 4 can be made consecutive.

As mentioned above, the band for time 1 constructed in this manner has the lower portions of both sides of each piece 40 gradually becoming narrower as it reaches the lower end, so it can be bent using the flexure of the flexible band 1. .

In the above embodiment, a case has been described in which the flexible band 1 is knitted using the shape memory alloy 2 and the ordinary linear spring material 6, but the flexible band 1 may be knitted using only the shape memory alloy 2.

As is clear from the above description, according to the present invention, a flexible band knitted using a shape memory alloy at least in part is deformed, and the cross-sectional area occupied by the flexible band is reduced, and a large number of pieces are opened. and after insertion.

By restoring the shape of the shape memory alloy, the cross-sectional area occupied by the flexible band is expanded and restored, and the flexible band is brought into pressure contact with the inner surface of the hole of the piece, thereby fixing the two.

Therefore, the work of fixing the flexible band and the piece can be easily performed. Also, since you can apply finishing touches to the pieces in advance,
A beautiful finished state can be obtained. Furthermore, there is an advantage that the shape of the pieces can be stabilized.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the manufacturing method of the present invention,
Fig. 1 is a partial schematic perspective view of the flexible band at room temperature, Fig. 2 is a partial schematic perspective view of the flexible band in a deformed state, and Fig. 3 A and B are similar to those shown in Fig. 2. A partially schematic perspective view and an enlarged cross-sectional view of the flexible band showing the state in which the piece is inserted through the piece, and Figures 4A and B show the flexible band restored to the state shown in Figure 1 and the flexible band and the piece fixed. FIG. 2 is a partially schematic perspective view and an enlarged sectional view thereof showing a state in which the device is in a state where 1... Flexible band, 2... Shape memory alloy, 3... Spring material, 4... Piece, 5... Hole, 6...Okoma. ;1'10 3rd box A Omu box A 2nd? 3rd exit B ″; Junior room B

Claims (1)

[Claims] A flexible band is knitted using a shape memory alloy at least in part, and the flexible band is deformed so that the cross-sectional area occupied by the flexible band is reduced and the pieces are sequentially inserted into holes formed in each of a number of pieces. After insertion, the cross-sectional area occupied by the flexible band is enlarged and restored by shape-memory alloy shape restoration, and the flexible band is brought into pressure contact with the inner surface of the hole of each piece.
A method for manufacturing a watch band characterized by fixing both.