Pointer and timepiece

Patent metadata

Field	Value
Publication number	US-10705485-B2
Application number	US-201815884770-A
Country	US
Kind code	B2
Filing date	Jan 31, 2018
Priority date	Mar 8, 2017
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A pointer including a pointer body formed of synthetic resin, and a pointer attachment section formed of a material harder than the synthetic resin and provided in a rotation center portion of the pointer body, in which the pointer attachment section comprises a large-diameter section to which the pointer body is fixed and which includes a positioning section, and a small-diameter section which is provided coaxially with the large-diameter section and to which a pointer shaft is attached.

First claim

What is claimed is:

1. A pointer comprising:
a pointer body formed of synthetic resin; and
a pointer attachment section formed of a material harder than the synthetic resin and provided in a rotation center portion of the pointer body,
wherein the pointer attachment section comprises:
a large-diameter section on to which the pointer body is molded; and
a small-diameter section,
wherein the large-diameter section and the small-diameter section are arranged coaxially along an axis,
wherein the large-diameter section has a first side and a second side,
wherein the first side of the large-diameter section faces a first direction of the axis and the second side of the large-diameter section faces a second direction of the axis opposite to the first direction,
wherein the small-diameter section is provided on the second side of the large-diameter section and attached to a pointer shaft, and
wherein the first side of the large-diameter section comprises:
an axis-facing side wall extending along the axis; and
a bottom section extending towards the axis from the axis-facing side wall, and facing the first direction of the axis,
wherein the axis-facing side wall and the bottom section define a concave shape.

2. The pointer according to claim 1 ,
wherein the large-diameter section of the pointer attachment section is formed such that an outer diameter of the large-diameter section is substantially equal to or larger than a thickness of the pointer body along the axis, and
wherein the small-diameter section of the pointer attachment section is formed such that an outer diameter of the small-diameter section is smaller than the thickness of the pointer body.

3. The pointer according to claim 1 ,
wherein the large-diameter section of the pointer attachment section comprises a pair of flanges provided on the first side and the second side of the large-diameter section, respectively, so as to project outwardly from the axis, and
wherein the pointer body is molded on to the large-diameter section to project towards the axis into a space between the pair of flanges.

4. The pointer according to claim 1 ,
wherein the pointer body and the pointer attachment section are integrally formed by insert molding.

5. The pointer according to claim 1 ,
wherein an inner diameter of the concave shape as defined by the axis-facing side wall is larger than an outer diameter of the small-diameter section.

6. A timepiece comprising the pointer according to claim 1 .

Assignees

• Casio Computer Co Ltd

Inventors

• Okamura Naoki

Classifications

• G04B19/247

  disc-shaped {(G04B19/24306 takes precedence; for electrically driven timepieces G04C17/0058)} · CPC title

• G04B19/04 Primary

  Hands; Discs with a single mark or the like {(moving indicating arrangements which have scales or numbers with stationary hands or reading means G04B19/20; optical projection of the position of the hands G04B19/34)} · CPC title

• G04B19/042

  Construction and manufacture of the hands; arrangements for increasing reading accuracy (hands with illumination G04B19/305; specially shaped hands, e.g. figures or pictures G04B45/0061; clockwork in the hands G04B45/043; invisible drive of the hands G04B45/046) · CPC title

• G04B19/044 Primary

  Mounting and setting of the hands on the axle · CPC title