| 摘要 |
The invention relates to an internal parallel motion force sensor containing a rectangular box load body fixedly connected to a measuring transducer and an electronic evaluation unit in a gas and humidity tight manner. The load body has an axal longitudinal bore hole on one of its halves. On the other half it has a hollow bore hole coaxial thereto and which is approximately the same length, leaving a rod-shaped lever. Two identical notches in the middle of the load body are fitted with two flat parallel-moving spiral springs in two opposite lying outer surfaces. A membrane is located between the bore holes, the notches and two other notches. Said membrane acts as an elastic joint for the lever. Deformation of the load body by identical opposing forces is transmitted to the lever by the spiral springs, converted into an electric signal by the measuring transducer on the open end thereof and transmitted by the evaluation unit in digital form.
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