JPH02144761U

JPH02144761U -

Info

Publication number: JPH02144761U
Application number: JP5240889U
Authority: JP
Priority date: 1989-05-08
Filing date: 1989-05-08
Publication date: 1990-12-07
Anticipated expiration: 2004-05-08
Also published as: JPH0736275Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す断面図、第２
図は同上の平面図、第３図は第１図の左側面図、
第４図は同上の要部拡大図、第５図は第４図の平
面図、第６図は酸素センサの従来例を示す断面図
、第７図は同上の要部断面図、第８図は同上の要
部断面図、第９図は従来の欠点を説明するための
図である。２１……コネクタカバー、２２……センサ素子
、２２ａ……端子、２３……中空部、２４……コ
ネクタスプリング、２４ａ……鍔部、２５……挿
通孔、２５ａ……挿部、２５ｂ……位置決部、２
６……ガイド部、２７……係止溝、２９……リー
ドハーネス。 Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a plan view of the same as above, Figure 3 is a left side view of Figure 1,
Fig. 4 is an enlarged view of the main part of the same as above, Fig. 5 is a plan view of Fig. 4, Fig. 6 is a sectional view showing a conventional example of an oxygen sensor, Fig. 7 is a sectional view of the main part of the same as above, and Fig. is a sectional view of the same essential parts as above, and FIG. 9 is a diagram for explaining the conventional drawbacks. 21... Connector cover, 22... Sensor element, 22a... Terminal, 23... Hollow part, 24... Connector spring, 24a... Flange part, 25... Insertion hole, 25a... Insertion part, 25b... Positioning unit, 2
6... Guide portion, 27... Locking groove, 29... Lead harness.

Claims

[Scope of claim for utility model registration] A thin plate-shaped sensor element that detects the oxygen concentration of a gas to be detected at its tip, whose middle part is held by a holder,
The distal end faces the gas to be detected, the proximal end faces the hollow part of the cylindrical insulating member inserted into the case attached to the holder by inserting it from one end side of the insulating member, and the plate A contact piece made of a spring is inserted into the hollow part of the insulating member from the other end side of the insulating member to contact the terminal at the base end of the sensor element, and the lead harness connected to the contact piece is pulled out. In the oxygen sensor, a flange is formed on the contact piece to protrude in a direction substantially perpendicular to the insertion direction, and an insertion hole of the contact piece is communicated with the hollow part from the other end of the insulating member. forming an insertion part for inserting the contact piece into the insertion hole, and a positioning part for positioning and holding the contact piece when the contact piece comes into contact with a terminal of the sensor element; An oxygen sensor characterized in that a guide part is formed to guide the contact piece to the positioning part, and a locking part to which a flange part of the contact piece is locked is formed in the positioning part. .