JPH0212901Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial Application Field" This invention relates to a fastener that is applied to a watch band.

``Prior Art'' In general, watch band fasteners are required to be easy to operate with one hand and to be formed into a shape that harmonizes with the design of the watch and watch band. By the way, a three-fold stopper is widely known as a device that can be applied to a metal watch band. This three-fold stopper fits the bottom plate,
The ends of the top plate and the top box that overlaps the top board are connected to each other so as to be rotatable in the longitudinal direction of these plates, and the bits provided at the ends of the top box connect the bottom plate and the top. The three-fold state is maintained by being engaged with the hinge pin connecting the plate, and the watch and the band integrally attached thereto are fixed to the wrist, etc., and the end of the upper plate on the side with the bite part By pulling upward, the engagement is released and the watch and watch band can be removed from the wrist.

``Problem that the invention aims to solve'' However, when using the fastening metal fittings as described above for a long period of time, the biting part deforms and the bottom plate or top plate deforms, making it difficult to securely lock the metal fittings. This poses problems, such as the possibility that the upper box may become unlatched or the upper box may be accidentally touched and the lock may be released. Also, from a design point of view, in order to position the upper box in the center of the watch band,
The upper box becomes longer in the longitudinal direction of the watch band, and the part of the watch band that is covered by the upper box becomes longer, which causes problems such as impairing the design of the watch band.

``Means for Solving the Problems'' The watch band fastener according to this invention has engaging hooks protruding from the top surface of the substrate, as a means for solving the above-mentioned problems, and has hooks on both ends of the substrate. A free end of the first connecting plate, in which the first and second connecting plates, each of which is connected to an end of the band, are provided with a three-piece bending stopper attached so as to be foldable toward the top surface of the board. An upper box is provided to cover the engagement hook of the board, and openings are provided in the left and right side walls of the upper box, and the upper box is movable in the left and right direction of the upper box and engages with the engagement hook. A pair of locking members are supported in a facing state, and a resilient member is interposed between these locking members to bias them in a direction to separate them from each other. A pressing portion for elastically deforming the elastic member to release the engagement between the engagement hook and the locking member is formed protrudingly at the facing position, while the second connecting plate is folded into the engagement hook. A locking pawl is formed to lock this when the

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 5. In these figures, reference numeral 1 indicates a substrate, 2 indicates a first connection plate, and 3 indicates a second connection plate. A plate 4 is an upper box, 5 and 6 are locking members, and these reference numerals 1 to 6 constitute the main members of this embodiment.

The substrate 1 is formed to be curved with an appropriate curvature, and an engagement hook 7 that projects upward and is bent into an approximately U-shape is provided at approximately the center of the convex side. . This engagement hook 7
has both free ends bent inward to form a locking portion 8 that locks the locking members 5 and 6, and the entire body is bent toward the second connecting plate 3 (left side in Figure 3). The bent side edge portion constitutes a locking pawl 9 that locks the second connecting plate when it is folded. A cutout hole 10 is formed on the substrate 1 and extends in the length direction with the engagement hook 7 in between.
and the second connecting plates 2 and 3 are fitted together.

These first and second connecting plates 2 and 3 are curved with almost the same curvature as the substrate 1, and their base ends are foldably attached to both ends of the substrate 1 via hinge pins 11. There is. On the other hand, an end portion of a watch band 12 is rotatably connected to the free end of each of the connecting plates 2 and 3 by a hinge pin 11.

The upper box 4 supports the locking members 5 and 6, and has U-shaped side walls 4b having openings 13 attached to the left and right edges of the top plate 4a that covers the engagement hook 7. The end portion of the hinge pin 11 is inserted into a through hole 14 formed in the side wall portion 4b of the first connecting plate 2, and is rotatably provided on the first connecting plate 2.

The locking members 5 and 6 are each formed into a prismatic shape as a whole, and are supported by the upper box 4 in a state allowing relative movement in opposing directions. on the other hand,
A cutout recess 15 is formed in the side walls of these locking members 5 and 6 so as to surround the engagement hook 7, and the engagement hook 7 is provided at the tip of the cutout recess 15 (i.e., the tip of the locking member). A locking protrusion 16 that engages with the stopper 8 is provided in a protruding manner. Further, a shaft portion 17 extending in the length direction from the tip of the one locking member 5
protrudes and is adapted to be inserted into an insertion hole 18 formed at the tip of the other locking member 6. Note that locking members 5 and 6 are provided in this insertion hole 18.
A resilient member (in the illustrated example, a coil spring) 19 is attached to urge the elements apart from each other. Further, the opening 13 of the upper box of the locking members 5 and 6
At the position facing the front side, a pressing part 20 for a pressing operation for elastically deforming the resilient member 19 and disengaging the engaging hook 7 from the locking members 5 and 6 has a stepped part between them. It is formed protrudingly.

"Function" Next, the function of the fastener configured as described above will be explained.

To fix the watch band 12 to the wrist, the second connecting plate 3 is folded toward the base plate 1, and is held in the folded state by being engaged with the locking pawl 9 formed on the engagement hook 7. Next, while holding the upper box 4 and pressing the two pressing parts 20 of the locking members 5 and 6 between the thumb and, for example, the index finger, fold the first connecting plate 2 onto the base plate 1 and lock it here. When the pressing operation of the members 5 and 6 is released, the locking members 5 and 6 are moved to the resilient member 19.
It returns to its original state due to its elasticity, and the locking protrusion 16 engages with the locking portion 8 of the engagement hook 7. In this state, the free ends of the two connecting plates 2 and 3 are connected to the upper box 4.
The cover is covered with a lid so that it cannot be seen from the outside, and it is securely locked in the folded state.

To remove the watch band 12 from your wrist, etc., press the pressing parts 20 of the locking members 5 and 6 protruding from both side walls 4b of the upper box 4, and then press the engaging hook 7.
, and pull up the first connecting plate 2.
For example, if the second connecting plate 3 is pulled up using the band 12, the locking force by the locking pawl 9 is weak, so
This can be easily opened to the substrate 1.

It should be noted that the shapes of the engaging hook 7, the locking pawl 9, and the locking members 5 and 6 shown in the embodiments are not limited to those in the embodiments. Also, the position where the engaging hook 7 is formed may be located anywhere on the substrate 1.

"Effects of the Invention" As explained above, according to the present invention, by operating the locking member, the watch band can be reliably locked when fastened to the wrist, and it can also be prevented from accidentally coming off. Furthermore, since the portion of the upper case that is exposed when the watch band is worn is reduced, various excellent effects such as not impairing the design of the watch band can be achieved.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention, in which Figure 1 is a plan view showing the stopper of the watch band, Figure 2 is a plan view showing the watch band in its folded state, and Figure 3 is a plan view showing the watch band in its folded state. is a side view, FIG. 4 is an enlarged partially cutaway sectional view of the chain line circle portion in FIG. 1, and FIG. 5 is a perspective view. 1... Board, 2... First connection plate, 3... Second
connecting plate, 4... upper box, 5, 6... locking member, 7
...Engagement hook, 8...Latching portion, 9...Latching claw,
12... Watch band, 19... Elastic member (coil spring), 20... Pressing part.

Claims (1)

[Scope of utility model registration request] An engagement hook is provided protruding from the top surface of the board, and first and second connecting plates, each of which is connected to the ends of a band, are attached to both ends of the board so as to be foldable toward the top surface of the board. Equipped with metal fittings,
An upper box that covers the engagement hook of the board is provided at the free end of the first connecting plate, and openings are provided in the left and right side walls of the upper box, and the upper box is provided with an opening in the left and right side walls of the upper box. A pair of locking members that are movable in the left and right direction and that engage with the engagement hook are supported in a facing state, and a resilient member that urges the locking members in a direction to separate them from each other is interposed between the locking members. Further, at a position facing both openings of the upper box of the locking member, a pressing portion for elastically deforming the elastic member to release the engagement between the engagement hook and the locking member is formed protrudingly. A stopper for a watch band, characterized in that the engaging hook is formed with a locking pawl that locks the second connecting plate when it is folded.