Timepiece

Patent metadata

Field	Value
Publication number	US-11543782-B2
Application number	US-202016745439-A
Country	US
Kind code	B2
Filing date	Jan 17, 2020
Priority date	Jan 17, 2019
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

Abstract

A timepiece is provided which ensures connection reliability and improves antenna characteristics. This timepiece includes a wristwatch case which houses a timepiece module, and an antenna which is provided on the upper surface of the wristwatch case in a discontinuous annular shape along the circumferential direction of the wristwatch case and electrically connected to the timepiece module in the wristwatch case from outside the wristwatch case. As a result, since the antenna is electrically connected to the timepiece module in the wristwatch case from outside the wristwatch case, the antenna and the timepiece module are unfailingly and favorably connected to each other. Accordingly, the connection reliability of the antenna is ensured and radio waves are favorably received. In addition, the reception performance and the antenna gain are improved, whereby the antenna characteristics are improved.

First claim

What is claimed is:

1. A timepiece comprising:
a case which houses a module; and
an antenna which is provided in a discontinuous annular shape on one surface of the case and electrically connected to the module in the case from outside the case,
wherein the antenna includes a feed contact section that is electrically connected to the module, a first ground contact section, a second ground contact section, and a third ground contact section.

2. The timepiece according to claim 1 ,
wherein the case has a circle surface, and the antenna is provided in the discontinuous annular shape along a circumferential direction of the circle surface.

3. The timepiece according to claim 1 ,
wherein the antenna is electrically connected to the module via band attachment sections provided on a 12 o'clock side and a 6 o'clock side of the case.

4. The timepiece according to claim 1 ,
wherein the feed contact section is electrically connected to the module by a first connection member provided on the case and corresponding to a band attachment section provided on a 12 o'clock side of the case.

5. The timepiece according to claim 1 ,
wherein the first ground contact section is electrically connected to the module by a second connection member provided on the case and corresponding to a band attachment section provided on a 12 o'clock side of the case, via a back cover provided on an other surface of the case opposite to the one side.

6. The timepiece according to claim 1 ,
wherein the second ground contact section and the third ground contact section are electrically connected to the module by a third connection member provided on the case and corresponding to a band attachment section provided on a 6 o'clock side of the case, via a back cover provided on an other surface of the case opposite to the one side.

7. The timepiece according to claim 1 ,
wherein the first ground contact section is arranged to be separated from the feed contact section by a length equivalent to a predetermined opening angle in a counter clockwise direction, the second ground contact section is substantially diagonally arranged opposing the feed contact section such that a length therebetween is equivalent to a predetermined opening angle, and the third ground contact section is arranged to be separated from the feed contact section by a length equivalent to a predetermined opening angle in a clockwise direction which is smaller than the predetermined opening angle for the second ground contact section.

8. The timepiece according to claim 1 ,
wherein the case has band attachment sections, and the antenna is not provided in a portion not corresponding to the band attachment sections of the case.

9. The timepiece according to claim 1 ,
wherein the antenna is not provided in a portion corresponding to a 10 o'clock side of the case.

Assignees

• Casio Computer Co Ltd

Inventors

• Katsuda hiroshi
• Otsubo Hiroaki
• Kurokawa Tomoyasu

Classifications

• H01Q7/00

  Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• G04R60/10 Primary

  inside cases · CPC title

• G04R60/04

  Antennas attached to or integrated in watch bracelets · CPC title

• H01Q1/50

  Structural association of antennas with earthing switches, lead-in devices or lightning protectors · CPC title