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US 2002/0053241 A1Published application
Load detecting device
AssigneeDenso Corporation
InventorsKenji Morikawa, Tetsuo Imamura
Life of this patent
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Abstract
In a load detecting device, a hermetically sealed sensor chamber is constituted by a sensor head, a bellows, a housing and a stem. A sensor chip for detecting pressure is housed in the sensor chamber that is filled up with liquid. When load is applied to the sensor head, the bellows contracts axially to vary pressure of the liquid. The sensor chip senses the pressure of the liquid so that the load applied to the sensor chamber is detected with higher detecting accuracy.
Claims14
A load detecting device, comprising:
- a bellows unit which expands and contracts axially according to a load applied to an axial end thereof, the bellows unit being provided inside with a sensor chamber which is hermetically sealed from outside and whose pressure is variable according to an expanding and contracting movement thereof;
- and
- a pressure detecting element installed in the sensor chamber,
- wherein the pressure detecting element detects the pressure of the sensor chamber and generates a signal representing the load applied to the bellows unit.
1 more element
Dependencies are inferred from the claim text.