JPS60137366U - oxygen sensor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional view showing an embodiment of an oxygen sensor according to the present invention, FIG. 2 is an enlarged cross-sectional view of a main part of the rear part of such an oxygen sensor where a rubber plug is disposed, and FIG. 4 are a front view and a rear view of the connected state of the lead wires and leads, respectively, for explaining the structure of the connector in the embodiment of FIG. 1, and FIG. 5 is a diagram showing another embodiment of the present invention. FIG. 6 and FIG. 7 are respectively a perspective view showing another structure of the connector used in the present invention and an explanatory view showing the connection form of the lead wire and the lead. 8 and 9 respectively show other examples of the connector structure that can be used in the present invention, FIG. 8 is a perspective view of the projection forming member, and FIG. 9 is a perspective view of the protrusion forming member. The figure is an explanatory cross-sectional view showing a state in which such a protrusion forming member is attached to a connector and disposed within an insulator. 2: solid electrolyte, 4: housing, 16: heater, 18
, 20: Insulator, 24: Center electrode, 26: Cap,
30: Small diameter part, 32: Rubber stopper, 34av 34b, 3
4c: Lead wire, 36: Caulking part, 42: Connector, 14
: Signal lead, 46: Heater lead, 48: Projection piece, 50
: Connector housing hole.

Claims (5)

[Scope of utility model registration request] (1) At the rear of an oxygen sensor that has a solid electrolyte provided with a predetermined electrode and a heater for heating the solid electrolyte, a cylindrical cap is provided to form the outer shell of the oxygen sensor, and the rear end of the cap is A rubber stopper is attached to the opening, and a lead wire for extracting the electromotive force signal of the solid electrolyte and a lead wire for passing current to the heater are respectively inserted from the outside through the rubber stopper, and the cap The lead wire is fixed by electrically connecting it to the solid electrolyte and the heater side through predetermined connectors in an internal insulator, and applying a compressive force in a radial direction to the rubber stopper. An oxygen sensor that is characterized by: (2) The oxygen sensor according to claim 1, wherein the rubber stopper is pressurized in the radial direction by caulking the cap from the outside, thereby fixing the lead wire. . (3) Utility model registration claim 1 or 2, characterized in that the connector has a protrusion, and the connector is fixed in the insulator by the protrusion. oxygen sensor. (4) Any one of claims 1 to 3 of the claims registered as a utility model, characterized in that the connector is directly connected to an electrode provided on the solid electrolyte or to the heater. Oxygen sensor described in. (5) Utility model registration claims 1 to 3, characterized in that the connector is connected to the electrode of the solid electrolyte or the heater via a predetermined lead member. The oxygen sensor according to any one of.