Timepiece

Abstract

To provide a timepiece in which it has been made possible to exchange an edge member, to which a glass has been fixed, without accompanying a case band. A wristwatch comprises an annular case band, a case back, an annular edge member, a glass, and a C-shaped spring member. A front side end part of the case band forming a fitting hole has an edge receiving face around the fitting hole and an engaging groove. The case back is detachably attached to a back side end part of the case band. The glass is fitted and fixed to an annular step part having been formed in the edge member. In the edge member there are provided a tubular part fitted to the fitting hole so as to be capable of being inserted and disengaged, and a cover part overlapping with the edge receiving face. In the tubular part there are provided an annular attaching groove opening to an inner periphery of the tubular part, and plural through-holes communicating with the annular attaching groove and opening to an outer periphery of the tubular part. The spring member has plural catching convex parts catching to the engaging groove through the through-hole. By detachably attaching this spring member to the attaching groove under a state that the case back 31 has been detached, the edge member is detachably attached to the case band.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

A preferred form of the present invention is illustrated in the accompanying drawings in which:

FIG. 1 is a plan view showing a wristwatch concerned with one embodiment of the present invention;

FIG. 2 is a sectional view showing one part of the wristwatch of FIG. 1, while being enlarged;

FIG. 3 is a sectional view showing along an arrow line F3-F3 in FIG. 2;

FIG. 4 is a perspective view showing one part of an edge member that the wristwatch of FIG. 1 possesses, while being seen from an outside;

FIG. 5 is a perspective view showing one part of the edge member that the wristwatch of FIG. 1 possesses, while being seen from an inside; and

FIG. 6 is a perspective view showing a spring member that the wristwatch of FIG. 1 possesses.

Claims

1. A timepiece comprising: an annular case band which has a front side end part forming a fitting hole, and in which this end part has an annular engaging groove opening to the fitting hole together with an edge receiving face around the fitting hole;a case back having been detachably attached to a back side end part of the case band;an annular edge member which has a tubular part fitted so as to be capable of being inserted into and disengaged from the fitting hole and a cover part overlapped with the edge receiving face, and in which, in the tubular part, there has been formed an annular attaching groove opening to an inner periphery face of the tubular part, and there have been formed plural through-holes communicating the fitting groove and the engaging groove under a state that the tubular part has been fitted to the fitting hole;a glass having been fitted and fixed to an annular step part having been formed in the edge member; anda C-shaped spring member which is detachably attached to the attaching groove under a state that the case back has been detached, and which has plural catching convex parts caught to the engaging groove through the through-hole.

2. A timepiece according to claim 1, wherein there has been possessed an annular seal packing having been nipped between the edge receiving face and the cover part under a compressed state.

3. A timepiece according to claim 1, wherein by protruding at least one end part of the spring member to an inside of the tubular part, it has been made an operating part when detaching the spring member from the attaching groove.

4. A timepiece according to claim 1, wherein the glass is fixed to the annular step part by an adhesive.