JP2006334308A - Wristwatch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wristwatch having a band eliminating the necessity for adjustment of the size of a belt, easily attached/detached, reducing stuffy feeling when wearing it, and handled easily when taking it off. <P>SOLUTION: This wristwatch comprises a watch body including a circular or elliptical dial plate and a single wire band with elasticity, two connecting parts connecting the watch body to the wire band are provided at diagonal parts of the watch body, and the wire band is formed into Mobius curve oppositely extending from the respective connecting parts along the watch body. In wearing, the user is just required to pass an arm through the wire band, and when taking off, this watch is used as a stand clock by just putting it on a table without any change. The wire band is narrower than a regular band so as to scarcely make the user feel stuffy and have lightweight. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wristwatch including a wire band formed in a Mobius curve.

  A wristwatch is usually provided with a band for fixing to a portion of the arm near the wrist. A wristwatch band is generally equipped with a pair of strips of leather, resin, metal, etc. on both sides of the dial outer edge of the watch body, and a connecting part such as a clasp at the opposite end. is there. When the wristwatch is worn, this stopper is connected and fixed at a position near the wrist, and the wristwatch is attached and detached by opening and closing the stopper.

  In order to cope with the difference in the size of each person's arm, many leather and resin bands have a plurality of holes in the longitudinal direction on one side and a buckle on the other side. The buckle pin is inserted into the hole to be fixed. Many metal bands are configured to be deformed into a shape along the arm by connecting multiple band pieces with screws, and the number of band pieces can be adjusted according to the size of the user's arm at the time of purchase. It is common to adjust.

  These wristwatches require a band to be adjusted according to the size of the arm when the size of the arm changes or when other users use it. For, if the size of the hole at the end is no longer correct, the band must be replaced. In the case of the type in which the size is adjusted by the band piece, if the adjustment cannot be performed at the stopper portion, the band piece must be added or removed. As described above, in addition to the inconvenient size adjustment, in the type in which the pin is inserted into the hole, the part of the hole that is usually used is easily worn out and deteriorated, and it deteriorates when the position of the hole is changed. There is a problem that the part that has become noticeable.

  As a method for solving such a problem, it is conceivable to use a shape memory alloy for a band part of a wristwatch (see, for example, Patent Document 1 and Patent Document 2). The use of the shape memory alloy eliminates the need for band exchange for size adjustment, and also has the effect of being easy to attach and detach.

Japanese Patent No. 2740952 JP-A-11-239506

  The invention described in Patent Document 1 is characterized in that a linear material band made of a shape memory alloy is formed in a spiral shape in several layers with a thickness suitable for the arm, and has good air permeability and is hard to be steamed. In terms of points, it is superior to conventional bands. However, since the size of the band portion is relatively large in such a shape, it is expected that the band portion becomes bulky and difficult to handle when the wristwatch is removed. In addition, since the watch body and dial are fixed on a linear band, there is a problem that it is difficult to check the time because the dial must be formed relatively small in terms of strength. May occur. In addition, the band part is formed in several layers of spiral, and the part that comes into contact with the arm becomes wider when worn, giving the user a feeling of wearing more than a normal wristwatch, and creating a sense of incongruity in terms of design. There is a possibility.

  The invention described in Patent Document 2 has a shape in which an arm is sandwiched by a band-shaped band made of a shape memory alloy. Although it does not require size adjustment and is easy to attach and detach, it has a belt-like shape, so that the air permeability is not significantly different from that of a conventional band. Also, since it is fixed in the same shape even when it is removed from the arm, it can not be folded and stored like a belt of other materials, while it is like a table clock with the dial facing the front Since it cannot be stood up, there is a problem that it is difficult to handle when the wristwatch is removed especially when going out.

  The present invention has been made in response to these problems, and it is not necessary to adjust the size of the belt, is easy to attach and detach, has little stuffiness when attached, and is easy to handle when removed. An object of the present invention is to provide a wristwatch equipped with a watch.

  The present invention for solving such a problem is a wristwatch comprising a watch body including a dial and one wire band having elasticity, and two connecting portions for connecting the watch body and the wire band are the watch body. And a wire band extending in the opposite direction along the watch body from each connecting portion and having a Moebius curve shape.

  The present invention may also be characterized in that an NT alloy is used for the wire band. The NT alloy used for the wire band may be an NT-based superelastic alloy. The NT alloy used for the wire band may be formed as a round core having a diameter of 0.4 to 1.0 mm.

  Further, according to the present invention, the outer peripheral portion of the watch body is circular or elliptical, and the wire band is connected at a position of about 45 ° with respect to the center line connecting the 0 o'clock and 6 o'clock of the dial. It can also be characterized by being connected to a section.

  The present invention eliminates the need for the user to adjust the size of the wristwatch with a band or a fastener when wearing the wristwatch, and allows the user to fit the arm in an appropriate position simply by passing the arm through the wire band. Yes, and easy to attach and detach.

  In addition, when the watch is removed, the watch body including the dial can be placed in the front direction with the bottom of the Mobius curved wire band as the base. Can be used like a table clock. Furthermore, since it is formed of one band on the wire and the contact area with the skin becomes small, it is possible to suppress the stuffiness and obtain a comfortable wearing feeling. Furthermore, since a very thin band is used as a wire band compared to a normal band, the wristwatch can be significantly reduced in weight.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings. In addition, the shape of the wristwatch shown in the following description is a part of the embodiment of the wristwatch according to the present invention, and the present invention is not limited to the embodiment described below.

  1 to 6 are a front view, a rear view, a top view, a bottom view, a right side view, and a left side view, respectively, of a wristwatch according to the present invention. FIG. 7 is a diagram showing a state when the wristwatch according to the present invention is mounted. FIG. 8 is a diagram showing a state in which the wristwatch according to the present invention is placed on a table. FIG. 9 is a diagram showing the arrangement of the wire band and dial of the wristwatch according to the present invention. FIGS. 10 and 11 are views showing a first example and a second example, respectively, of structures in which the wire band insertion portion of the wristwatch according to the present invention is inserted and fixed in the insertion port of the watch body. 12-14 is a figure which shows the 1st-3rd variation, respectively about the other form of the wristwatch concerning this invention.

  The wristwatch according to the present invention is configured in a shape as shown in the six views of the orthographic projection of FIGS. As shown in the front view of FIG. 1, a wire-like band (hereinafter referred to as “wire band”) is connected to the connecting portion 3 provided at the diagonal portion of the circular watch body 1 on which the dial is displayed. Is connected. The wire band 2 is arranged in a Mobius curve shape in opposite directions so as to surround the watch body from the connection with the watch body including the dial, but since one wire is used, the wire band 2 in FIG. As shown in the rear view, the back side of the watch body is twisted into an inverted S shape (S shape when viewed from the front). The watch body 1 may have any shape as long as the wire band 2 can circulate so as to form a Mobius curve, and may have an elliptical shape close to a circle in which the major axis and the minor axis are not significantly different. Alternatively, a part of the ellipse may be cut into a straight line.

  It is necessary to use an elastic material for the wire band used here so that the shape of the band does not change. Specifically, an NT alloy or a resin is used, and it is particularly preferable to use an NT-based superelastic alloy. In the case of using an NT-based superelastic alloy, it is preferable to use an alloy having a N: T ratio of about 49:51.

  The shape of the elastic wire used for the wire band is not particularly limited. However, when an NT-based superelastic alloy is used, the cross-sectional diameter is 0.4 to 1 in consideration of elasticity and workability. It is preferable to use a round core-shaped wire having a circular shape of about 0 mm (or an elliptical shape corresponding to this). In the case of using a resin, a particularly suitable specification is not specified, and it has elasticity and shape equivalent to a round core super elastic alloy with a diameter of 0.4 mm to 1.0 mm shaped by injection molding. Anything is acceptable.

  As described above, when a wire band obtained by processing an NT-based superelastic alloy having a N: T ratio of about 49:51 into a round core shape having a cross-sectional diameter of about 0.4 to 1.0 mm is generally used. It becomes difficult to easily deform the shape of the wire by hand like a shape memory alloy. By heat-treating the wire band at a temperature of about 200 to 400 ° C. and rapidly cooling to stabilize the shape, it is possible to continue using the wristband as a wristband without losing the originally formed shape.

  In addition, when using resin for a wire band, it forms in a Mobius curve shape by injection forming rather than the method of bending a core material like the case where an alloy is used. The thickness of the wire varies depending on the material, but the cross-sectional area is about 3 to 30 square mm.

  About the wire processed into the shape of a round core using NT alloy, you may use it as a wire band in the state as it is, but it is preferable to give some coating in consideration of mounting nature and design nature. For example, it can be coated with a silicon tube, a polyolefin resin, or the like. By coating with resin, it is possible to improve the feeling of contact at the time of wearing and to enhance the design by giving color to the resin to be coated.

  Regardless of the shape used so far, the wire band is formed as a very thin band compared to the band used in a normal wristwatch, so the weight of the band part is significantly lighter than that of a normal wristwatch. It becomes possible to become.

  3 and 4 are views of the wristwatch according to the present invention as viewed from the upper side and the bottom side, respectively. In this way, when the wire band is formed so as to have a circular shape or an equivalent shape as viewed from above and below, the wrist can be worn in the state shown in the example of FIG. 7 by passing the arm through the circular portion. it can. Unlike a normal wristwatch, since it is not necessary to attach or remove the stopper attached to the band, it is easy to attach and detach. As long as the circular portion can pass through, it fits to the arm due to the elasticity of the wire band regardless of the thickness of the arm, so that it is not necessary to adjust the size of the band. In addition, in order to produce a comfortable fit for the arm, it is preferable to adopt the above-described suitable shape if the material is NT-based superelastic alloy.

  5 and 6 are side views of the wristwatch according to the present invention as seen from the right side and the left side, respectively. When the wristwatch according to the present invention is placed on a table, the portion located under the watch body of the wire band and the twisted portion furthest from the watch body serve as a fulcrum, and the watch body is obliquely upward and the dial is easy to see. And become independent. FIG. 8 is a perspective view of the wristwatch according to the present invention placed on a table when viewed from the front diagonally left side. When the wristwatch is placed on the table with the wristwatch removed in this way, it can be used as a table clock without any discomfort in design. Can be used.

  FIG. 9 shows a preferable positional relationship between the wire band and the dial of the wristwatch according to the present invention. The connection part that connects the wire band to the watch body is provided at a position of about 45 ° with respect to the center line connecting the 0 o'clock and 6 o'clock of the dial, and the wire band is connected at an incident angle of 90 ° to the connection part. By configuring as described above, the wire band can be fitted to the arm and maintained in a shape that is easy to use as a table clock when placed on a table.

  FIG.10 and FIG.11 has shown the example of the structure which inserts and fixes the insertion part of the wire band of the wristwatch concerning this invention to the insertion port of a watch main body. As shown in FIG. 10, a screw hole 5 and an insertion port 6 are provided in the connection portion 3 between the watch body 1 including the dial and the wire band 2. The insertion part 7 is provided in both the front-end | tips of the wire band 2, The insertion part 7 is fixed by inserting the insertion part 7 in the insertion port 6, and fixing the screw 4 to the screw hole 5. The wire band 2 is fixed to the connection part 3.

  In addition, the shape of the insertion part 7 is not limited to what was made flat partly as shown in FIG. 10, For example, as shown in the example of FIG. 11, the whole insertion part is formed planarly. It is good as well. The structure of the connecting portion 3 is not limited to these examples as long as the watch body 1 and the wire band 2 are firmly connected.

  12 to 14 show variations in the shape of the wristwatch according to the present invention. FIG. 12 shows a variation in which a part of the watch body and the belt portion are integrally formed. It is only necessary to have resin etc. in the connection part of the wire band that is molded integrally with the watch body, and since the area of the connection part is larger than when connecting the wire band directly, the variation in design can be expanded. Is possible.

  FIG. 13 shows an example of variations such as ladies' specifications. In ladies' specifications, the dial is usually designed to be smaller than men's, so by increasing the number of wire bands that circulate the watch body, it is formed into a wire band of the required size in relation to the arm circumference. To do.

  FIG. 14 is an example of other variations such as ladies' specifications. In order to design the dial smaller as in FIG. 13, a wire band formed so as to surround the watch body is not incident on the connecting portion, but on the straight portion of the wire band on the opposite side of the watch body dial. The back side is pasted and connected. Note that the variations in FIGS. 13 and 14 can also be adopted for children who design a small dial.

It is a front view of the wristwatch concerning the present invention. It is a rear view of the wristwatch concerning the present invention. It is a top view of the wristwatch concerning the present invention. It is a bottom view of the wristwatch concerning the present invention. It is a right view of the wristwatch concerning the present invention. It is a left side view of the wristwatch concerning the present invention. It is a figure which shows the state at the time of mounting | wearing of the wristwatch concerning this invention. It is a figure which shows the state which put the wristwatch concerning this invention on the desk. It is a figure which shows arrangement | positioning of the wire band and dial of the wristwatch concerning this invention. It is a figure which shows the 1st example of the structure which inserts and fixes the insertion part of the wire band of the wristwatch concerning this invention to the insertion port of a timepiece main body. It is a figure which shows the 2nd example of the structure which inserts and fixes the insertion part of the wire band of the wristwatch concerning this invention to the insertion port of a timepiece main body. It is a figure which shows the 1st variation about the other form of the wristwatch concerning this invention. It is a figure which shows the 2nd variation about the other form of the wristwatch concerning this invention. It is a figure which shows the 3rd variation about the other form of the wristwatch concerning this invention.

Explanation of symbols

1 Watch body 2 Wire band 3 Connection 4 Screw 5 Screw hole 6 Insert 7 Insert

Claims (5)

A watch comprising a watch body including a dial and one wire band having elasticity,
Two connecting parts that connect the watch body and the wire band are provided on the diagonal part of the watch body,
A wristwatch characterized in that the wire band extends in the opposite direction along the watch body from each connecting portion and is formed in a Mobius curve shape. The wristwatch according to claim 1, wherein an NT alloy is used for the wire band. The wristwatch according to claim 2, wherein the NT alloy used for the wire band is an NT-based superelastic alloy. The wristwatch according to claim 2 or 3, wherein the NT alloy used for the wire band is formed as a round core having a diameter of 0.4 to 1.0 mm. The outer periphery of the watch body is circular or elliptical,
The said wire band is connected to the connection part arrange | positioned in the position of about 45 degrees with respect to the center line which connects 0 o'clock and 6 o'clock of a dial face. Watches.