| 摘要 |
PURPOSE:To improve the detection precision of the pressure in a cylinder by providing a detection switch and a motor to a device which draws a chart by putting a printing tool in reciprocal motion on an indicator drum with the pressure in the cylinder, and detecting the reciprocal motion and rotating the drum. CONSTITUTION:A fitting base 12 for proximity switches 10 and 11 is fixed to an indicator body 14 in one body and the upward/downward motion of a detection piece 7 is detected by the switches 10 and 11. An oscillatory motor fitting plate 15 and an oscillator motor 18 are fixed to the main body 14, the oscillatory shaft 18' of the motor 18 is fixed to a pulley 21 through a key 20, and the rotation of the oscillatory shaft 18' is transmitted to the indicator drum 1 through a belt 23. Then, the rotation of the drum 1 is synchronized with the upward/downward motion of a lever 3 and a pen 6 through the upward/downward motion of a piston 2 to collect the pressure in the cylinder automatically. Consequently, the pressure in the cylinder is detected with high precision without skillfullness. |
