Electromagnetic field control member

Patent metadata

Field	Value
Publication number	US-2020105433-A1
Application number	US-201816497281-A
Country	US
Kind code	A1
Filing date	Mar 26, 2018
Priority date	Mar 24, 2017
Publication date	Apr 2, 2020
Grant date	—

Abstract

An electromagnetic field control member includes an insulating member constituted of a cylindrical ceramic and having a plurality of through holes along an axial direction, a conductive member constituted of metal and closing the through holes so as to provide an opening that opens in an outer periphery of the insulating member, and a power supply terminal connected to the conductive member. The power supply terminal is located away from an inner wall of the insulating member forming the through holes, and has a first end and a second end in the axial direction, and at least one of the first end and the second end is located farther away from the inner wall than a central portion of the power supply terminal.

First claim

1 . An electromagnetic field control member comprising:
a cylindrical ceramic insulating member having a plurality of through-holes along an axial direction; a metal conductive member closing each of the plurality of through-holes so as to provide an opening that opens in an outer periphery of the insulating member; and a power supply terminal connected to the conductive member, located away from an inner wall of the insulating member forming the plurality of through-holes, and having a first end and a second end in the axial direction, wherein at least one of the first end and the second end is located farther away from the inner wall than a central portion of the power supply terminal.

2 . The electromagnetic field control member according to claim 1 , wherein the power supply terminal comprises an end member including the first end or the second end, and a central member including the central portion.

3 . The electromagnetic field control member according to claim 2 , wherein the end member and the central member are fitted to each other.

4 . The electromagnetic field control member according to claim 1 , wherein at least a part of the power supply terminal protrudes in a radial direction from an outer periphery of the insulating member.

5 . The electromagnetic field control member according to claim 1 , wherein a metalized layer is provided on the inner wall.

6 . The electromagnetic field control member according to claim 1 , wherein a width between inner walls gradually increases from the inner periphery to the outer periphery of the insulating member.

7 . The electromagnetic field control member according to claim 6 , wherein in a cross section perpendicular to the axial direction, an angle formed by the inner walls opposing each other is 12° to 20°.

8 . The electromagnetic field control member according to claim 2 , wherein at least a part of the power supply terminal protrudes in a radial direction from an outer periphery of the insulating member.

9 . The electromagnetic field control member according to claim 3 , wherein at least a part of the power supply terminal protrudes in a radial direction from an outer periphery of the insulating member.

10 . The electromagnetic field control member according to claim 2 , wherein a metalized layer is provided on the inner wall.

11 . The electromagnetic field control member according to claim 3 , wherein a metalized layer is provided on the inner wall.

12 . The electromagnetic field control member according to claim 4 , wherein a metalized layer is provided on the inner wall.

13 . The electromagnetic field control member according to claim 2 , wherein a width between inner walls gradually increases from the inner periphery to the outer periphery of the insulating member.

14 . The electromagnetic field control member according to claim 3 , wherein a width between inner walls gradually increases from the inner periphery to the outer periphery of the insulating member.

15 . The electromagnetic field control member according to claim 4 , wherein a width between inner walls gradually increases from the inner periphery to the outer periphery of the insulating member.

16 . The electromagnetic field control member according to claim 5 , wherein a width between inner walls gradually increases from the inner periphery to the outer periphery of the insulating member.

17 . The electromagnetic field control member according to claim 13 , wherein in a cross section perpendicular to the axial direction, an angle formed by the inner walls opposing each other is 12° to 20°.

18 . The electromagnetic field control member according to claim 14 , wherein in a cross section perpendicular to the axial direction, an angle formed by the inner walls opposing each other is 12° to 20°.

19 . The electromagnetic field control member according to claim 15 , wherein in a cross section perpendicular to the axial direction, an angle formed by the inner walls opposing each other is 12° to 20°.

20 . The electromagnetic field control member according to claim 16 , wherein in a cross section perpendicular to the axial direction, an angle formed by the inner walls opposing each other is 12° to 20°.

Assignees

• Kyocera Corp

Inventors

• Iwamoto Kouichi
• Sasagawa Atsushi
• Yokoyama Takaya
• Yokoyama Atsushi

Classifications

• H05H13/00

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