| 摘要 |
A gravity-type horizontal shift sensing apparatus being mounted on and moved along with an object for efficiently sensing and measuring any difference in angle of inclination of the object when the object moves. The apparatus includes two intersected rocking arms rotatably disposed between close-up inner cover and inner seat, and a weight suspended from the rocking arms. The rocking arm each is provided at one end outside the inner cover and the inner seat with a toothed wheel and an optical wheel associated with the toothed wheel. The toothed wheel meshes with a gear sideward projected from a wheel mounted to one side of the rocking arm. The wheel each also has an optical wheel associated therewith. Outer peripheries of the optical wheels on the rocking arms and the wheels respectively pass between two sensing elements mounted at two sides of recesses formed on the circuit board. When the object is shifted in its horizontal position, the weight automatically biases due to the gravitation and causes the optical wheels on the rocking arms and the wheels to rotate. And the sensing elements on the circuit board can efficiently sense and measure the horizontal shift of the object from the extent of rotation of the optical wheels.
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