Gas sensor and intermediate component thereof

A technology for gas sensors and intermediate components, applied in the field of gas sensors and intermediate components, capable of solving the problems of deformation of the embedded part P5 and inability to properly perform assembly operations, etc., preventing deformation of the fitting part, suppressing poor fitting, and easy The effect of assembly work
CN103270409AActive Publication Date: 2013-08-28NGK SPARK PLUG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NGK SPARK PLUG CO LTD
Publication Date
2013-08-28

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Abstract

The present invention addresses the problem of providing a gas sensor, which can be suitably assembled by accurately aligning connecting terminals with a separator, and an intermediate component of the gas sensor. An oxygen sensor (1) is provided with protruding portions (105-111) that protrude to the leading edge side from the separator (27) surface on the leading edge side. On the outer circumferential surfaces of the protruding portions (105-111), an outer fitting portion (53) of an outer connecting terminal (29) is fixed by means of pressing force of the outer fitting portion itself, and on the inner circumferential surfaces of the protruding portions (105-111), an inner fitting portion (73) of an inner connecting terminal (31) is fixed by means of a pressing force of the inner fitting portion itself. Consequently, the position of the outer connecting terminal (29) and that of the inner connecting terminal (31) with respect to the separator (27) are not easily shifted, and the outer connecting terminal (29) and the inner connecting terminal (31) can be accurately aligned.
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Description

technical field

[0001] The present invention relates to a gas sensor and an intermediate part thereof. The gas sensor includes: a cylindrical sensor element; a connection terminal fitted to the sensor; and a spacer having a through hole into which a part of the connection terminal is inserted. Background technique

[0002] Conventionally, as a sensor having a sensor element for detecting a gas to be detected, for example, an oxygen sensor for detecting the concentration of oxygen contained in exhaust gas of an automobile is known.

[0003] As the sensor element of this oxygen sensor, as described in the following patent documents 1 and 2, a sensor formed in a bottomed cylindrical shape, having internal electrodes inside a solid dielectric body and external electrodes outside the solid dielectric body is known. element.

[0004] On the rear end side of such a sensor element, an inner connection terminal is arranged. The inner connection terminal is embedded in the sensor ele...

Claims

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