JP3610316B2 - Watch band - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wristwatch band, and more particularly, to a wristwatch band which is excellent in durability, does not lose its timepiece even when used for a long period of time, and has an excellent wearing feeling.
[0002]
[Prior art]
FIG. 7 shows a conventional wristwatch using a urethane band widely used as a wristwatch band. As shown in the figure, the wristwatch 1 is constructed by incorporating mechanical parts, a dial, and the like in a case 2, and urethane bands 3 and 4 are attached to both sides of the wristwatch 1, respectively. A fastener 5 is attached to the front end of the urethane band 3 on one side, and a plurality of locking holes 6 are provided at predetermined pitch intervals in the urethane band 4 on the other side so as to engage with the fastener 5. Yes.
[0003]
Urethane bands are made of urethane resin, which is a soft resin, so they are widely used as watch bands because they are easy and inexpensive to mold, and they are flexible and have good color and printability. ing.
[0004]
[Problems to be solved by the invention]
However, on the other hand, as shown in FIG. 8, the urethane band 4 is easily broken due to the hydrolyzability of the material, and is particularly prone to breakage with the locking hole 6 as a base point. There was a problem in durability that only the life could be obtained. For this reason, it has been pointed out that when a urethane band is used as a wristwatch band, the band is cut and the watch is lost or the watch is damaged due to falling.
[0005]
As a countermeasure, we changed the material of the band to urethane resin and made it a soft resin such as silicone resin or natural rubber, so as to maintain good moldability and improve durability and prolong the service life. Watch bands have been proposed.
[0006]
However, silicone resins and natural rubber systems are more expensive than urethane resins, and when natural rubber systems are used, new problems such as a unique rubber odor appear. For this reason, a wristwatch band in which the material is simply replaced with a soft resin such as a silicone resin or natural rubber cannot sufficiently meet the needs as an alternative to a urethane band with improved durability.
[0007]
In addition, as another countermeasure, a urethane band having improved durability by integrating a carbon cloth woven with carbon fiber into the urethane bands 3 and 4 by insert molding has been proposed.
[0008]
However, in the structure in which the carbon cloth is insert-molded in the urethane band, the cost of the mold equipment is high, and the carbon cloth is relatively expensive, which causes a significant increase in cost. . In addition, it has been pointed out that the carbon cloth cannot be reliably fixed in the mold at the time of insert molding of the carbon cloth, a defective product is likely to occur, and the productivity is lowered.
[0009]
The present invention has been made in view of such circumstances, and maintains the advantages of a wristwatch band using a molded body made of a soft resin such as urethane resin, while maintaining the durability of the soft resin molded body with an inexpensive structure. The purpose is to provide a practical wristwatch band with an improved height.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the embodiment of this application is a wristwatch band that is attached to both sides of a wristwatch and holds the wristwatch, and has a fiber mesh shape on the back surface of the band body made of a soft resin molding. The reinforcing band is integrated.
[0011]
Here, the soft resin molding that is the material of the band main body may be selected from urethane resin, silicone resin, and the like, and the fiber mesh-like reinforcing band is nylon (polyamide) fiber, PP (polypropylene). It is possible to use chemical fibers such as fibers and polyester fibers which are knitted into a mesh or woven into a mesh.
[0012]
And according to such a structure, since the fiber mesh-shaped reinforcement strip | belt body is integrated with the band main body back surface which consists of a soft resin molding, a band does not fracture | rupture easily by this reinforcement strip | belt body.
[0013]
Furthermore, since the fiber mesh-like reinforcing band is integrated on the back surface of the band main body, there is no feeling of stickiness to the skin when using the band, and the wearing feeling is excellent.
[0014]
According to the embodiment of the present invention, the reinforcing band integrated with the back surface of the band body is bonded and fixed to the back surface of the band body, and then integrated with the back surface of the band body by stitching along the periphery of the reinforcing band body. It is characterized by being.
[0015]
And according to such a configuration, the fiber mesh-like reinforcing band body is bonded and fixed to the back surface of the band body, and then integrated by stitching along the peripheral edge of the reinforcing band body. The bonding strength is strengthened, the band main body and the reinforcing band body do not peel off even after long-term use, and the appearance is improved by the stitch pattern.
[0016]
According to the embodiment of the present invention, a concave portion is formed on the back surface of the band main body along the outer shape of the reinforcing band, and the reinforcing band is accommodated and fixed in the concave portion.
[0017]
And according to such a structure, since the fiber mesh-shaped reinforcement belt body is accommodated in the accommodation recessed part provided in the back surface of the band main body, the peripheral part of a reinforcement belt body is protected by the accommodation recessed part inner wall surface. For this reason, fiber fraying or the like does not occur at the periphery.
[0018]
According to the embodiment of the present invention, the reinforcing band is provided with an elongated opening for collectively opening a plurality of locking holes formed in the band main body.
[0019]
According to such a configuration, the reinforcing band is formed with an elongated opening, and a plurality of locking holes for locking with the fasteners formed on the band body are collectively passed through the opening. Therefore, it is not necessary to form the holes of the reinforcing band corresponding to the pitch of the locking holes of the band body.
[0020]
According to an embodiment of the present invention, the reinforcing band is composed of a chemical fiber mesh knitted body.
[0021]
And according to such a structure, since the fiber mesh-shaped reinforcement belt is comprised from the mesh-shaped knitted body which consists of a chemical fiber, the reinforcement function which improves durability of a band main body can be satisfied more. .
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a wristwatch band according to the present invention will be described in detail with reference to the accompanying drawings.
[0023]
1 is an external view showing a wristwatch to which a wristwatch band according to the present invention is applied, FIG. 2 is a plan view of the wristwatch band according to the present invention as viewed from the back side, FIG. 3 is a sectional view of the wristwatch band, and FIGS. These are each explanatory drawing which shows the manufacturing process of the wristwatch band.
[0024]
As shown in FIG. 1, the main body 20 of the wristwatch 10 is configured by incorporating mechanical parts, a dial, and the like in a case, and the wristband 30 is attached to the attachment portions 21 and 22 on both sides of the main body 20. , 40 are attached.
[0025]
A band-shaped ring 34 is inserted into one wristwatch band 30 that is attached to the attachment portion 21, and a fastener (buckle) 31 including a ring 32 and a locking pin 33 is attached to the tip.
[0026]
The other wristwatch band 40 attached to the attachment portion 22 is a band main body made of a soft resin molding such as urethane resin or silicone resin, as shown in a plan view seen from the back side in FIG. 2 and a cross-sectional view in FIG. 50 and a fiber mesh-like reinforcing band 60 integrated with the back surface of the band main body 50 and having a reinforcing function. More specifically, in this embodiment, the band main body 50 is formed of an urethane resin injection-molded body, and the reinforcing band body 60 is formed of a nylon (polyamide resin) fiber mesh-like knitted body.
[0027]
The band body 50 is provided with an attachment edge 51 for attachment to the attachment portion 22 of the wristwatch 10 on the terminal side, and a plurality of fasteners 31 for locking the fastener 31 of the wristwatch band 30 on the other side. The locking holes 52 are opened at a predetermined pitch interval.
[0028]
The band main body 50 and the reinforcing band body 60 are integrated with each other via an adhesive and stitch yarn 61. Specifically, a frame-shaped recess 53 is formed in a shallow bottom shape on the back surface of the band main body 50, and the frame-shaped reinforcing band body 60 is accommodated and fixed in the frame-shaped recess 53. In the state, the band main body 50 and the reinforcing band body 60 are bonded and fixed by an adhesive applied to the joint surface between them. Next, stitching is performed by an industrial sewing machine using the stitch yarn 61 along the peripheral edge of the reinforcing band 60. That is, the band main body 50 and the reinforcing band body 60 are firmly integrated by the adhesive force of the adhesive and the mechanical fixation by the stitch yarn 61.
[0029]
In addition, regarding the configuration of the wristwatch band 30 provided with the fastener 31, the above-described two-layer structure of the band main body 50 and the reinforcing belt body 60 is applied mutatis mutandis in consideration of reinforcement and a feeling of wearing when the wristwatch 10 is worn. Although it is preferable, for the wristwatch band 30 on the side having the fastener 31, a single band made of a soft resin molded material can be applied depending on circumstances.
[0030]
Thus, since the wristwatch band 40 according to the present invention is a two-layer structure of the band body 50 and the reinforcing band body 60, the band body 50 made of urethane is positioned on the surface side of the wristband 40. It will be. Since the urethane material is excellent in coloration and printability, the surface side of the wristwatch band 40 can be easily provided with a pattern such as a printing texture, and the commercial value can be increased. On the other hand, since the reinforcing band 60 is integrated on the back surface side of the wristwatch band 40, it is possible to prevent the problem of durability that the breakage easily occurs with the locking hole 52 as a base point as in the prior art. The life of the band can be extended.
[0031]
In addition, since the fiber mesh-like reinforcing band 60 is located on the back of the band that will be in close contact with the wrist, the wearing feeling is good when worn on the wrist, and sweat and dirt do not easily accumulate on the skin. There is little influence such as rash on the skin, and it can be said that it is preferable in terms of hygiene.
[0032]
In addition, since the reinforcing band 60 is accommodated in the frame-shaped accommodating recess 53, fiber fraying particularly generated from the peripheral edge of the reinforcing band 60 can be avoided, which also prolongs the product life. It is a factor.
[0033]
In the present embodiment, stitching is performed between the reinforcing band 60 and the band main body 50 to obtain a strong attachment strength between them, and at the same time, the appearance is improved by the stitch pattern. In this example, a frame-shaped accommodation recess 53 is formed on the back surface of the band main body 50, and after the reinforcement belt 60 having the same shape is accommodated in the accommodation recess 53, bonding and sewing are performed. An inexpensive structure in which the flat band main body 50 and the reinforcing band 60 are integrated (regardless of fixing means) may be adopted.
[0034]
Next, FIGS. 4 to 6 show the manufacturing process of the wristwatch band 40 shown in FIG.
[0035]
As shown in FIG. 4, in the molding process of the band body 50, first, polyurethane resin is injected and filled into an injection mold (not shown) to induce a urethane reaction in the mold, and the housing recess 53 and the locking hole 52 are formed. The band main body 50 is formed. After molding, secondary processing such as printing is performed on the surface of the band main body 50.
[0036]
On the other hand, in another process, the nylon mesh is cut into a band shape to form a fiber mesh-shaped reinforcing band 60, and the peripheral edge 62 is blown with a flame to melt and solidify the fiber to prevent fiber fraying.
[0037]
Next, an adhesive (urethane-based adhesive) 63 is applied to the joint surface side of the reinforcing band 60, and the reinforcing band 60 is bonded and fixed in the housing recess 53 formed in the back surface of the band body 50. . At this time, since the peripheral edge portion 62 of the reinforcing band 60 contacts the inner wall surface of the housing recess 53, fiber sag of the peripheral edge portion 62 is reliably prevented. In addition, a laterally long opening 64 is formed in the center of the reinforcing band 60, so that the locking holes 52 of the band main body 50 can be exposed to the outside collectively.
[0038]
After the adhesive 63 is dried, as shown in FIG. 6, stitch yarn 61 is used along the peripheral edge of the reinforcing band 60, stitch processing is performed by an industrial sewing machine, and the watch band shown in FIG. 40 is produced.
[0039]
As described above, according to the present embodiment, the wristwatch band 40 is subjected to stitch processing by an industrial sewing machine after the band body 50 to be injection-molded and the reinforcing band body 60 cut into a predetermined shape are bonded and fixed. Since it can be mass-produced with simple work, the equipment cost is low. In addition, the injection mold for molding the band body 50 can be molded with a general-purpose mold and does not require new equipment.
[0040]
【The invention's effect】
As described above, the wristwatch band according to the present invention has a structure in which a fiber mesh-like reinforcing band is integrated on the back of the band main body, so that the band does not break even after long-term use, and the wristwatch is broken due to dropping. And the effect of preventing loss.
[0041]
Furthermore, when the wristwatch band according to the present invention is worn on the wrist, the fiber mesh-like reinforcing band integrated with the back of the band body comes into contact with the wrist, so that the wearing feeling is excellent and sweat or the like is less likely to stagnate. In addition, there is an effect that the skin is not irritated and the like is hygienic.
[Brief description of the drawings]
FIG. 1 is an external view showing an overall configuration of a wristwatch to which a wristwatch band according to the present invention is applied.
FIG. 2 is a plan view seen from the back side showing one embodiment of a wristwatch band according to the present invention.
FIG. 3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view showing a band body after injection molding in the manufacturing process of the wristwatch band shown in FIG. 2. FIG.
5 is an explanatory view showing a bonding process between the band main body and the reinforcing band body in the manufacturing process of the wristwatch band shown in FIG. 2. FIG.
6 is an explanatory diagram showing a stitching process of a reinforcing band in the manufacturing process of the wristwatch band shown in FIG. 2. FIG.
FIG. 7 is an external view showing a wristwatch using a conventional urethane band.
FIG. 8 is a plan view showing a conventional urethane band.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Wristwatch 20 Wristwatch main body 21,22 Band attaching part 30 Wristwatch band 31 Fastener 40 Wristwatch band 50 Band main body 52 Locking hole 53 Receiving recess 60 Reinforcement belt body 61 Stitch thread 62 Peripheral part 63 Adhesive 64 Opening

Claims (1)

A wristwatch band having a band body made of a soft resin molded body and a reinforcing belt body, which is attached to both sides of the wristwatch and holds the wristwatch,
On the back side of the band body, a recess is formed along the outer shape of the reinforcing band for accommodating and fixing the reinforcing band,
The reinforcing band is composed of a chemical fiber mesh-like knitted body, and after being bonded and fixed to the recess on the back surface of the band body, it is integrated with the back surface of the band body by stitching along the periphery of the reinforcing band body,
A wristwatch band, characterized in that an elongated opening for opening a plurality of locking holes formed in the band main body is formed in the reinforcing band.

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