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US 12,085,896 B2Granted
Pointer device and timepiece
AssigneeCasio Computer Co., Ltd.
InventorsKyohei Hasebe, Takashi Suizu, Koji Namiki, Makoto Sawada
Life of this patent
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Abstract
A pointer device including a rotation body, a pointer shaft provided on the rotation body, a base member which rotatably supports the pointer shaft, and a spiral spring which has a substantially truncated conical shape and is arranged between the rotation body and the base member.
Claims6
A pointer device comprising:
- a rotation body;
- a pointer shaft provided on the rotation body;
- a base member which rotatably supports the pointer shaft, and
- a spiral spring which has a truncated conical shape and is arranged between the rotation body and the base member,
- wherein a large diameter portion of the spiral spring is positioned on a surface of either of the rotation body and the base member, and a small diameter portion of the spiral spring is arranged on a surface of the other of the rotation body and the base member,
- wherein the spiral spring is formed in the truncated conical shape by a wire being wound in a spiral shape and the small diameter portion being raised higher than the large diameter portion in an expansion/contraction direction, and
- wherein a portion of the wire corresponding to an outer circumferential portion of the large diameter portion of the spiral spring is bent toward the base member, and an end of the bent portion of the wire is positioned on the base member together with an end of the wire corresponding to an inner circumferential portion of the small diameter portion.
4 more elements
A pointer device, comprising:
- a rotation body;
- a pointer shaft provided on the rotation body;
- a base member which rotatably supports the pointer shaft, and
- a spiral spring which has a truncated conical shape and is arranged between the rotation body and the base member,
- wherein a large diameter portion of the spiral spring is positioned on a surface of either of the rotation body and the base member, and a small diameter portion of the spiral spring is arranged on a surface of the other of the rotation body and the base member,
- wherein the spiral spring is formed in the truncated conical shape by a wire being wound in a spiral shape and the small diameter portion being raised higher than the large diameter portion in an expansion/contraction direction,
- wherein an end of the large diameter portion and an end of the small diameter portion of the spiral spring are obliquely cut with respect to a central axis of the wire so as to form acute angles, and
- wherein chamfered portions are formed on the obliquely cut ends.
5 more elements
Dependencies are inferred from the claim text.