Pressure detection device and intake pressure measurement apparatus using the same
AssigneeAlps Electric Co., Ltd.
InventorsHisanobu Okawa, Yasuhiro Suda, Hiroshi Ishida, Hideki Kamimura
Life of this patent
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Abstract
In a pressure detection device which is provided in an intake pressure measurement apparatus, a detection space surrounded by an outer wall portion is formed in a housing, and an inner wall portion is formed integrally in the detection space such that both end portions are connected to the outer wall portion. The inner wall portion has a cylindrical shape, and a sensor storage portion is formed between the inner wall portion and the outer wall portion. In the sensor storage portion, a pressure sensor is disposed in a region with the least influence of thermal stress at a position closer to the inner wall portion than the outer wall portion.
Claims11
A pressure detection device comprising,
- a housing;
- and
- a pressure sensor held in the housing,
- wherein an outer wall portion surrounding a detection space and an inner wall portion inside the detection space are formed integrally in the housing, the inner wall portion has both end portions integrally connected to the outer wall portion inside the detection space, the pressure sensor is disposed close to the inner wall portion and separated from the inner surface of the inner wall portion, and the pressure sensor is fixed at a position closer to the inner surface of the inner wall portion than the inner surface of the outer wall portion in the detection space.
Dependencies are inferred from the claim text.