JP3033874U - Device for preventing removal of connecting pin in watch band - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is intended to provide a watch band that reliably prevents the connecting pin from being pulled out. According to the present invention, in a watch band in which a connecting piece is straddled between outer side pieces on both sides and a connecting pin passing through the connecting piece is inserted and connected between the outer pieces, the outer side pieces on both sides are directed upward or downward. And a concave ring portion is provided at both ends of the connecting pin so that the concave ring portion faces the opening portion of the U-shaped body, and an intermediate adjustment groove is formed in the opening portion. In the device for preventing the connecting pin from coming off in a watch band, a driving piece provided with a bag groove sandwiched between is driven, and the concave ring portion of the connecting pin is sandwiched and held by the bag groove. is there.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a device for preventing a connecting pin from slipping out in a watch band.

[0002]

[Prior art]

 Conventionally, a watch band formed by connecting connecting pieces by connecting connecting pieces has a connecting pin 3 inserted into the connecting hole 5 as shown in FIG. The pieces 1a and 1b, the middle piece 1c, and the connecting piece 4 are connected to each other.

[0003]

[Problems to be solved by the invention]

 However, there is a problem in that the connecting pin 3 is often pulled out from the bridge and the watch band is disassembled because the connecting pin and the connecting pin are loosened due to wear and the like.

[0004]

[Means for Solving the Problems]

 According to the present invention, the outer pieces on both sides are formed as a U-shaped body having an upward or downward opening portion, and concave ring portions are provided at both ends of the connecting pin so that the concave ring portion is formed in the opening portion of the U-shaped body. This problem is solved by holding the concave ring portion of the connecting pin between the bag grooves provided in the driving piece that is faced and mounted in the opening.

[0005]

[Embodiment of the invention]

 This will be described below with reference to the drawings.

The outer pieces 1a and 1b are formed in a U-shape having an upward opening 2 as shown in FIG. As shown in FIG. 2, the connecting pin 3 has concave ring portions 3b and 3b at both ends thereof, and the connecting pin 5 is connected to the connecting hole 5 communicating between the middle piece 1c and the outer pieces 1a and 1b sandwiching the connecting piece 4. When 3 is inserted, the concave ring portions 3b, 3b provided at both ends of the connecting pin 3 face the openings 2 of the outer pieces 1a, 1b. Reference numeral 6 denotes a thick plate-shaped driving piece formed in the same shape as the opening 2, and as shown in FIG. 1, a bag groove 6b having a large inlet and a large circular groove which sandwiches the intermediate adjusting groove 6a. , 6c are provided, and the driving piece 6 is driven into the opening 2 for mounting. As shown in Fig. 3, the bag grooves 6b and 6c are narrowed by the narrow inlet to expand the adjustment groove 6a and fit into the concave ring portions 3a and 3b of the connecting pin 3 to be elastically narrowed again to the original shape. 3b and 3b are sandwiched and held.

In FIG. 4, the openings 2 of the outer pieces 1a, 1b are directed downward, and the driving piece 6 is to be turned over from the front side of the outer pieces 1a, 1b.

In addition, in FIG. 5, the inlet side of the bag grooves 6b and 6c is expanded outwards 6d and 6e so that the driving groove 6 has a trapezoidal shape in a side view instead of the adjustment groove 6a. The 6e part was pushed down.

In any of the above cases, as shown in FIG. 6, a stop hole 6f is provided in the intermediate portion of the driving piece 6, and a stop pin 7 which is transversely inserted between the openings 2 of the outer pieces 1a and 1b. It is possible to strengthen the prevention of pulling out by holding the driving piece 6 in a skewered state. Further, it is possible to prevent the driving piece 6 from being pulled out only by the action of the stop pin 7.

Further, the driving piece 6 may be colored in gold or the like, or a design variation may be attached by engraving a pattern or the like on the exposed surface.

[0011]

[Effect of the invention]

 As described above, according to the present invention, concave ring portions are provided at both end portions of the connecting pin so as to face the opening of the outer piece, and the concave ring portion is driven into the opening to form a bag groove provided in the driving piece. Since it is sandwiched and held, even if looseness occurs between the connecting pin and the connecting hole, the effect of reliably preventing the connecting pin from being pulled out is produced.

By adding coloring or design variation to the driving piece, there is an effect that the timepiece band can be given a new look.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing an outer piece, a driving piece, and a connecting pin before they are assembled.

FIG. 2 is a cross-sectional view showing an assembled state.

FIG. 3 is a vertical sectional view showing a driving process of a driving piece.

FIG. 4 is a vertical cross-sectional view showing an example in which an opening is provided on the lower side.

FIG. 5 is a vertical sectional view showing another example of a driving piece.

FIG. 6 is a partial perspective view showing an example of using a stop pin.

FIG. 7 is a diagram illustrating a conventional example.

[Explanation of symbols]

 1a and 1b are outer pieces 1c are middle pieces 2 are openings 3 are connecting pins 3a are knurls 3b are concave rings 4 are connecting pieces 5 are connecting holes 6 are driving pieces 6a are adjusting grooves 6b, 6c are blind grooves 6d and 6e are expanded parts 6f are stop holes 7 are stop pins

Claims (4)

[Utility model registration claims] 1. In a watch band in which a connecting piece is straddled between outer side pieces on both sides and a connecting pin passing through the connecting piece is inserted and connected between the outer side pieces, the outer side pieces on both sides are directed upward or downward. It is formed by a U-shaped body having an opening, and concave ring portions are provided at both ends of the connecting pin so that the concave ring portion faces the opening portion of the U-shaped body, and an intermediate adjustment groove is formed in the opening portion. A device for preventing a connecting pin from slipping out in a watch band, wherein a driving piece having a bag groove sandwiched therebetween is driven and the concave ring portion of the connecting pin is held by the bag groove. 2. The method according to claim 1, wherein instead of the adjustment groove in the middle, the driving piece is expanded to the outside on both sides of the bag groove so as to have a trapezoidal shape in side view, and the expanded portion is depressed after the driving. Equipment. 3. The apparatus according to claim 1, wherein the driving piece is skewered and held by a stop pin which is transversely attached to the outer piece. 4. The apparatus according to claim 1, wherein the driving piece is colored with gold or the like, and a design variation is added.