Sensor

Patent metadata

Field	Value
Publication number	US-9482637-B2
Application number	US-201414246530-A
Country	US
Kind code	B2
Filing date	Apr 7, 2014
Priority date	Apr 8, 2013
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

A sensor including: a detection element; terminal members; and a separator, wherein at least one specific first electrode terminal portion and an other first electrode terminal portion are formed on a first main surface of the detection element, wherein a second electrode terminal portion formed on a second main surface of the detection element is disposed so as to be offset from the specific first electrode terminal portion and to overlap with the other first electrode terminal portion in the axial direction, and in a thickness direction, a distance between the detection element and a specific first frame body portion brought into electrical connection with the specific first electrode terminal portion is larger than a distance between the detection element and the other first frame body portion brought into electrical connection with the other first electrode portion.

First claim

The invention claimed is:

1. A sensor comprising:
a detection element extending along an axial direction, and having a first main surface and a second main surface which face opposite each other and constitute a portion of a surface extending along the axial direction, and a plurality of electrode terminal portions disposed on each of the first main surface and the second main surface;
a plurality of terminal members provided in correspondence with the electrode terminal portions and electrically connected to the corresponding electrode terminal portions, each of the terminal members comprising an elongated frame body portion extending along the axial direction, a folded portion connecting with a forward end side of the frame body portion and folded back towards a detection element side and a rearward end side, and an element contact portion connecting with the folded portion at a forward end side thereof and brought into elastic contact with the electrode terminal portion; and
a separator surrounding the element contact portions and a portion of the detection element at which the plurality of electrode terminal portions are disposed,
wherein, with a direction in which the first main surface and the second main surface face opposite each other being defined as a thickness direction,
a plurality of first electrode terminal portions are formed on the first main surface of the detection element, the plurality of first electrode terminal portions including at least one specific first electrode terminal portion and an other first electrode terminal portion other than the specific first electrode terminal portion, and the specific first electrode terminal portion and the other first electrode terminal portion being disposed so as be offset from each other in the axial direction of the detection element,
a plurality of second electrode terminal portions are formed on the second main surface of the detection element,
the second electrode terminal portion is disposed so as to overlap with the other first electrode terminal portion in the axial direction of the detection element and is disposed so as to be offset from the specific first electrode terminal portion in the axial direction of the detection element, and
in the frame body portions of the terminal members, with respect to the thickness direction of the detection element, a distance between the detection element and a specific first frame body portion, which is brought into electrical connection with the specific first electrode terminal portion on the first main surface, is larger than a distance between the detection element and the other first frame body portion, which is brought into electrical connection with the other first electrode portion.

2. The sensor according to claim 1 ,
wherein, in the frame body portions of the terminal members, with respect to the thickness direction of the detection element, a distance between the detection element and a second frame body portion, which is brought into electrical contact with the second electrode terminal portion, is the same as the distance between the detection element and the other first frame body portion.

3. The sensor according to claim 1 ,
wherein, with a direction which is along the first main surface and the second main surface and which is orthogonal to the axial direction being defined as a width direction,
the other first electrode terminal portion and the second electrode terminal portion are disposed so as to overlap with each other in the width direction.

4. The sensor according to claim 1 ,
wherein a number of the first electrode terminal portions is larger than a number of the second electrode terminal portions.

5. The sensor according to claim 1 ,
wherein, with respect to the thickness direction of the detection element, a distance between the specific first frame body portion and the other first frame body portion is from 0.2 mm to 5 mm.

6. The sensor according to claim 1 ,
wherein, with respect to the axial direction, a distance between a contact portion between the specific first electrode terminal portion and the specific first frame body portion and a contact portion between the other first electrode terminal portion and the other first frame body portion is from 0.2 mm to 10 mm.

Assignees

• Ngk Spark Plug Co

Inventors

• Oba Takehiro
• Yamada Yuichi
• Ito Shingo
• Nagata Shogo

Classifications

• G01N27/407 Primary

  for investigating or analysing gases {(G01N27/411 takes precedence)} · CPC title