JPS60844B2 - Watch band fixing member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves attaching the watch band to the case by engaging an engaging pin attached to the watch band side or the watch case side to an engaging pin hole provided on the watch case side or the watch band side. The present invention relates to a watch band fixing member having an engaging pin having a structure of:

A watch band attachment member (hereinafter referred to as a spring bar) as shown in FIG. 1 has been used to attach a conventional watch band.

This spring bar has a structure in which the engaging pins at both ends are moved in and out by a coil spring built into a cylinder. When engaging with a case, first engage one engaging pin into the engaging pin hole of the corresponding case. After matching, the other engaging pin was pushed into the cylinder of the spring rod using a tapered member such as tweezers, and engaged with the engaging pin hole in the corresponding case. Therefore, when attaching and detaching this spring bar, a tapered part is always required, and in order to ensure engagement, the reaction force of the coil spring is strong, and force is required to retract the engagement pin. It wasn't easy. In addition, in terms of machining, after setting the engagement pin and coil spring inside the cylinder, the end of the cylinder must be folded inward while bending the spring to prevent the engagement pin from coming off, making machining difficult. Ta. Furthermore, since the deflection of the spring is used, the sliding stroke of the engagement pin is short and limited, and the spring bar must be changed depending on the width of the band end, and there are many types of spring bars. In addition, there were certain restrictions on the width of the band. It is an object of the present invention to eliminate these drawbacks and provide a watch band fixing member that is easy to attach and detach, is easy to process, and can accommodate a wider range of band widths.

The present invention will be explained using examples.

Fig. 2a is a perspective view of the watch band fixing member attached directly to the end piece of the metal band, and Fig. 2b is a partial sectional view thereof, in which one end of the cylindrical band fixing member main body 41 is attached to the engagement pin of the case. The engagement pin that engages with the hole is fixed by caulking. Further, one end of the end piece 45 is fixed to the back surface of the end piece 45 by welding or the like, and the other end has a cylindrical shape. Mami 44A, 4 with a diameter
4B is threadedly engaged with the same threaded shaft portion 43a of the sliding engagement pin 43, and the two knobs 44A and 44B prevent the sliding engagement pin 43 from loosening after engagement. That is, “
When one of the grips is turned to engage the sliding engagement pin 43 with the engagement pin hole of the case, the other grip is rotated and moved so as to come into contact with the one grip. If the other clamp is turned strongly so that the contact surfaces of both clamps are strongly pressed, loosening of the clamp can be prevented. on the other hand,
In FIG. 2b, if the locking pin 44B is rotated to the right so that it comes into contact with the center notch 41a, the sliding engaging pin 43 will be moved by the locking pin 44A on the left side and the locking pin 44B on the right side.
This is the same as in FIG. 3, and the engagement of the engagement pin 43 can be fixed and ensured after being set in the case. FIG. 3 is a partial sectional view showing an embodiment in which the engaging pins at both ends are integrated;
An engagement pin shaft 53 having engagement pin heads 53a and 53b at both ends has the same threaded shaft portion 53c, and a non-circular shaft portion 53d.
The non-circular cylindrical portion 5 of the band fixing member main body 51 corresponding to
It is slidably engaged with 1a in the axial direction. Into the notch 51b provided in the main body 51 are inserted screws 54A, 54B each having a threaded portion on a circular seat, and are threadedly engaged with the engagement pin threaded shaft portion 53c. In the embodiment of the present invention, when engaging the case, the knob is rotated and the shield-side engagement pin is slid into the cylinder of the watch band fixing part.
Engage the fixed side engagement pin with the engagement hole of the corresponding case,
Thereafter, the slider is rotated to cause the sliding side engagement pin to slide out and engage with the corresponding engagement hole in the case.

In addition, the cylindrical portion, the sliding side engagement pin, and related parts may be provided on the case side and engaged with the band. In addition, in Embodiment 2 and FIG. 3, two screws are used and the notched ends of the main body are used to prevent loosening of the screw engagement. Moreover, FIG. 3 shows a type in which the engagement pin is brought to one side and engaged with the case, and then the engagement pin is slid to the other side to complete the engagement. According to the present invention, since the engaging pin can be inserted and removed by rotating the handle, it is not necessary to use a pick-up tool such as a tapered part material as in the past, and it can be easily operated. It can be easily attached and detached without requiring any additional force.

In addition, since a screw slide is used, the sliding stroke becomes large, and the range of the corresponding band width or the end width of the case is widened, and the dimensions can be freely selected. Furthermore, the assembly is simple since it mainly involves engaging and assembling each part, and since each part can be replaced even after the product is ready, it is advantageous in terms of compatibility and speed. In addition, including after-sales service, by setting a small number of representative main body types and a small number of representative engagement pin types, and by combining each, it is possible to support a wide range of band widths and significantly increase It becomes possible to reduce parts. Further, in the present invention, since a plurality of screws are screwed into the same screw portion of the engagement pin shaft, loosening of the screw engagement can be prevented. That is, after the sliding engagement pin is engaged and set in the engagement pin hole of the case etc. by rotating one clamp, the other clamp is rotated to bring it into close contact with the clamp, or one of the central notches is turned. It is sufficient to set one clamp against the end face and the other clamp against the other end face. or,
In this way, the engagement position of the sliding engagement pin with the engagement pin hole is determined, and there is a practical effect of ensuring engagement. As described above, the present invention provides a watch band fixing member that is easy to attach and detach, has a wide range of support for band widths, and can save parts, and is truly useful and highly effective.

[Brief explanation of drawings]

Fig. 1: A partial sectional view showing a conventional embodiment,
FIGS. 2b and 3 are partial sectional views showing one embodiment of the present invention, and FIG. 2a are partial perspective views showing one embodiment of the present invention. 11, 41, 51...Band fixing member main body, 1
2, 43, 53...Engagement pin, 44A, 44B, 5
4A, 54B...knob. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] By holding engagement pins protruding from the cylinder ends at both ends of a cylinder that is attached to the band end or case end and having a length corresponding to the band width or case width, and sliding the engagement pins into the cylinder, In the watch band fixing member that attaches the band to the watch case by engaging the engagement pin in the engagement pin hole of the corresponding watch case or band, a part of the cylinder is provided with a non-circular cylindrical part, and the engagement pin inside the cylinder is A part of the mating pin shaft is formed into a non-circular shaft part corresponding to the non-circular cylindrical part, and a threaded part is provided on the mating pin shaft in the cylinder, a part of the cylinder is cut out, and the inside of the notch part is formed. 1. A watch band fixing member, characterized in that a plurality of knobs arranged on the holder and having threaded portions on the inside are threadedly engaged with the same threaded portion of the engagement pin shaft.