Wireless device having low susceptibility to static electricity

Patent metadata

Field	Value
Publication number	US-10739465-B2
Application number	US-201815882061-A
Country	US
Kind code	B2
Filing date	Jan 29, 2018
Priority date	Feb 6, 2017
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

A wireless device includes a circuit board, a communicator disposed on the circuit board, and a casing accommodating the circuit board and the communicator. The casing has a through-hole in a side face. An antenna element is disposed on the exterior of the casing. A feeder extends through the through-hole in the casing and feeds electrical power from the communicator to the antenna element at a predetermined feeding position. A ground terminal extends through the through-hole in the casing and electrically connects the circuit board to the antenna element at a ground position of the antenna element at a predetermined distance from the feeding position.

First claim

What is claimed is:

1. A wireless device comprising:
a circuit board;
a communicator disposed on the circuit board;
a casing accommodating the circuit board and the communicator and having a through-hole in a side face;
an antenna element disposed on the exterior of the casing;
a feeder extending through the through-hole in the casing and feeding electrical power from the communicator to the antenna element at a predetermined feeding position; and
a ground terminal extending through the through-hole in the casing and electrically connecting the circuit board to the antenna element at a ground position of the antenna element at a predetermined distance from the feeding position.

2. The wireless device according to claim 1 , wherein,
the ground terminal comprises:
a columnar ground pin extending through the casing; and

a connector fixed to the columnar ground pin and electrically connecting the columnar ground pin to the antenna element at the ground position.

3. The wireless device according to claim 2 , wherein the columnar ground pin constitutes a ground voltage feeding path of a charging terminal charging a battery feeding electrical power to the communicator.

4. The wireless device according to claim 1 , wherein the ground terminal is fixed and connects the circuit board to the antenna element.

5. The wireless device according to claim 4 , wherein at least part of the ground terminal is fixed with a screw.

6. The wireless device according to claim 1 , further comprising:
a waterproof structure preventing intrusion of moisture into the casing.

7. The wireless device according to claim 1 , wherein,
the communicator comprises a satellite-wave receiver receiving radio waves from a positioning satellite, and
the ground position of the antenna element is determined in accordance with the wavelength of the radio waves received from the positioning satellite.

8. The wireless device according to claim 1 , wherein the through-hole comprises a first through-hole through which the feeder extends and a second through-hole through which the ground terminal extends.

Assignees

• Casio Computer Co Ltd

Inventors

• Katsuda hiroshi
• Suzuki Akira
• Ohmura Akihisa
• Nishiyama Hiroki

Classifications

• H01Q1/273 Primary

  Adaptation for carrying or wearing by persons or animals · CPC title

• G01S19/35

  Constructional details or hardware or software details of the signal processing chain · CPC title

• H01Q9/42

  with folded element, the folded parts being spaced apart a small fraction of the operating wavelength · CPC title

• G04R20/02

  the radio signal being sent by a satellite, e.g. GPS · CPC title

• G01S19/21 Primary

  Interference related issues {; Issues related to cross-correlation, spoofing or other methods of denial of service} · CPC title