JP3028187U - Structure of hook type watch mounting part of leather band - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is to provide a new structure of a hook type timepiece mounting part which is easy to insert and remove, has a secure and secure feeling of inserting and is not cracked in a leather band. The purpose is. According to the present invention, in a hook type timepiece mounting portion formed by inserting and forming a leaf spring having a back plate, a folded cylinder portion and a tongue piece in series on a two-folded portion of a leather band, the back plate and the tongue piece are formed. While gradually approaching as they get away from the folded cylinder part,
A hook-type watch mounting of a leather band, characterized in that a step having a small length is provided between the back plate and the tongue, and the back plate and the tongue are formed to be narrower than the width between both ends of the folded tube portion. It is in the structure of the department.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the structure of a hook type timepiece mounting portion of a leather band.

[0002]

[Prior art]

 This type of watch band has a registered utility model No. 3018768 proposed by the applicant.

The utility model describes that a hook type timepiece mounting portion is formed by inserting a leaf spring having a back plate, a folded cylinder portion and a tongue piece into the two-folded portion of the leather band.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned utility model, the back plate and the tongue piece have the same length, so that not only is it easy to insert and remove the spring rod for attaching the timepiece, but also between the end portions of the plate bars of uniform length. Since the spring rod is forcibly pushed in like opening the pry open, there is a problem that the band part sandwiched between them is promptly damaged by fatigue.

Further, since the tongue piece is formed to have the same width as that of the folded-back tubular portion, there is a problem that stress due to the double opening and closing is applied to the folded-back tubular portion and cracks occur at an early stage in the folded-back tubular portion.

Further, since the pressing piece (protrusion) is provided on the inner surface of the middle of the tongue piece, there is a problem that the spring rod cannot be snapped.

[0007]

[Means for Solving the Problems]

 According to the present invention, the back plate and the tongue piece are folded back in the hook type timepiece mounting portion which is formed by inserting and forming a leaf spring having a back plate, a folded cylinder portion and a tongue piece in series at the two-folded portion of the leather band. As the distance from the tubular portion gradually increases, the steps are made closer to each other, a step is formed between the back plate and the tongue, one of which is short, and the back plate and the tongue are formed to be narrower than the width between both ends of the folded tubular portion. Further, a protrusion for snapping the spring rod is provided on the inner surface of the boundary portion of the back plate or the tongue on the side of the folded-back cylinder portion to solve the problem.

[0008]

[Action]

 In the present invention, a step is formed between the back plate and the tongue of the leaf spring, one of which is short and the other of which is small.Therefore, the spring rod for mounting the watch is temporarily pressed against the other and then slid on to hook it. This is extremely easy, and as a result, no unreasonable force is applied, so that the band portion that is sandwiched and abutted is not fatigued and is not damaged. In addition, the tip of the tongue is provided with an external opening inclination to enable smoother insertion. In addition, snapping with the protrusions gives a sense of security when installing the watch, and at the same time prevents twisting of the installation with the spring rod.

Further, since the width of the back plate and the tongue piece are made narrower than the width between both ends of the folded-back tubular portion, the stress load on the folded-back tubular portion due to the repetition of elastic opening and closing is significantly reduced, and the folded-back tubular portion due to stress is reduced. No cracks will occur.

[0010]

【Example】

 Embodiments will be described below with reference to the drawings.

A leaf spring 3 having a back plate 3a, a folded back tube portion 3b, and a tongue piece 3c in series is inserted in a two-folded portion 2 of a leather band 1 formed by an outer skin 1a and a back skin 1b. A hook type watch mounting portion 4 that opens and closes is formed. It should be noted that the back plate 3a of the leaf spring 3 and the tongue piece 3c are gradually brought closer to each other as they are separated from the folded-back tubular portion 3b, and step end surfaces 3d and 3e that make the tongue piece 3c shorter and shorter are formed, and the tip surface of the tongue piece 3c is formed. The 3e has a slight outward slope. Further, the back plate 3a and the tongue piece 3c are formed in a narrow shape that is gradually tapered with the curved edges 3f and 3g sandwiched between the ends of the folded cylinder 3b. Then, the folded end piece 2a of the leather band 1 surrounds the tongue piece 3c, and the outer skin 1a and the back skin 1b are widely adhered so that they do not come apart.

Further, on the inner surface of the boundary portion of the back plate 3a on the side of the folded cylinder 3b, two projections 5a and 5b for snapping are provided at intervals.

The leather band 1 is attached and detached by hooking a watch case 6 using a hook type watch attaching portion 4. Reference numeral 7 is a spring rod for hooking, and 8a and 8b are leg rods for holding the spring rod 7.

By adjusting the degree of proximity between the end of the tongue piece 3c and the back plate 3a, it is possible to adjust the force of inserting and removing the spring rod 7.

The step end surfaces 3d, 3e between the back plate 3a and the tongue piece 3c may be formed by making the back plate 3a side short as shown in FIG. 4, and the projections 5a, 5b for snapping are formed. It may be provided on the inner surface of the tongue piece 3c.

Although the embodiment has been described with reference to the leather band, the present invention can be applied to all soft bands made of cloth, synthetic resin, etc. capable of forming a double-folded portion.

[0017]

[Effect of device]

 According to the present invention, a step is formed between the back plate and the tongue piece of the leaf spring which constitutes the hook type timepiece mounting portion, one of which is short and the other of which makes it easy to hook the spring rod for timepiece mounting and the backboard. And the effect that the early damage of the band part which covers the end part of the tongue can be eliminated. Also, when the end of the tongue is provided with an outward opening inclination, the spring rod can be inserted more smoothly.

Since the back plate and the tongue are formed to have a width narrower than the width between both ends of the folded-back tubular portion, the stress caused by opening / closing the tongue is hardly applied to the folded-back portion, so that the folded-back tubular portion is not cracked. Cause

Since the projection for snapping is provided on the inner surface of the boundary portion of the back plate or tongue on the side of the folded-back tubular portion, when the spring rod is fitted into the folded-back tubular portion when the watch case is attached, the projection makes a clicking sound. As a result, there is an effect that the certainty of wearing and the feeling of security can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a pair of leather bands of the present invention, one of which is in a rear surface state before being attached to a watch case.

FIG. 2 is a partially enlarged side sectional view showing a state where the watch case is attached.

3A is a plan view showing a leaf spring, and FIG. 3B is a side view thereof.

FIG. 4 is a perspective view showing an example of forming another leaf spring having a short back plate side.

[Explanation of symbols]

 1 is a leather band 1a is a front skin 1b is a back skin 2 is a folded part 2a is a folded end piece 3 is a leaf spring 3a is a back plate 3b is a folded cylinder portion 3c is a tongue piece 4 is a hook-type watch mounting portion 5a, 5b Protrusion 6 for snapping is watch case 7 is spring rod 8a, 8b is a rod

Claims (3)

[Scope of utility model registration request] 1. A hook type timepiece mounting portion formed by inserting and forming a leaf spring having a back plate, a folded tube portion and a tongue piece in series at a two-fold portion of a leather band. The distance between the folded back tube and the tongue is gradually increased, and a step is formed between the back plate and the tongue such that one of them is short, and the back plate and the tongue are formed to be narrower than the width between both ends of the folded tube. The structure of the hook type watch mounting part of the leather band. 2. The structure according to claim 1, wherein a projection for snapping the spring rod is provided on the inner surface of the boundary portion of the back plate or the tongue on the side of the folded cylinder. 3. The structure according to claim 1, wherein the tip of the tongue is provided with an outwardly-opening inclination.