| 摘要 |
A gas sensor equipped with an elastic member which is disposed hermetically in an open end of an air cover joined to a housing. The elastic member has a vertical hole, an air flow path, and lead-retaining holes through which leads pass to establish electric connections between a sensing device and an external device. The air flow path extends from the vertical hole to an outer peripheral surface of the elastic member to direct air having entered at air inlets to the vertical hole. An assembly of an air-permeable filter and a support is fit elastically in the vertical hole of the elastic member, thereby asserting the stability of adhesion between the vertical hole and the filter even if the filter is thermally deteriorated to ensure the waterproofing of the gas sensor.
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