Denso Corporation

Kenji Isobe

Yoshifumi Terada

A liquid surface detector includes a terminal, a covering portion, and a sealing film. The terminal includes a ridge portion between a first wall face and a second wall face. The terminal sends an electric signal relating to detection of height of a liquid surface. The covering portion covers the terminal. The sealing film is formed between the terminal and the covering portion and is put into close contact with the terminal and the covering portion. The terminal further includes a groove and two second slant faces. The groove has a V-shape in cross-section and includes two first slant faces. The groove cuts off in the V-shape the ridge portion of an area of the first wall face covered with the sealing film. The two second slant faces respectively connect together an area of the second wall face covered with the sealing film and the two first slant faces. A boundary portion formed by contact between the two second slant faces which are opposed to each other is continuous with a top portion of the groove.

Liquid surface detector

A housing of a liquid level detection device includes an inner case, which has a first wall portion, and a terminal, which has a projection that extends through the first wall portion and projects to an outside of the inner case. The first wall portion and the projection are covered with a covering portion. A first seal film, which connects between an outer peripheral surface of the projection and the first wall portion, is formed in an inside of the covering portion. A film thickness of the first seal film along an edge line of the terminal progressively increases toward the first wall portion.

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Handa, Japan

Kenji Isobe