Shockproof movement of revolution meter
A tachometer and plastic technology, applied in speed/acceleration/shock measurement, speed/acceleration/electric shock meter details, measuring devices, etc., can solve the problems of unreasonable magnetic ring position, high height, large volume, etc., and achieve reduction Effects of small pointer shaking, changing torsion torque, and enhancing magnetic strength
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[0011] The pure iron sheet (14), fan-shaped neodymium iron boron magnet (13), Ω type pure iron (12) with output shaft base are adorned successively in the plastic lower housing (15). The output shaft sleeve (3) and the insulating piece (4) for adjusting the tension of the hairspring are installed in the middle of the upper horizontal bar of the plastic upper case (2), fixed with hex nuts (17), and two pieces of fixed hairspring are installed on the insulating piece (4) The small copper sheet of the head is also the electrical signal lead-in point (5). The output shaft (1) is placed in the base, passes through the output shaft sleeve (3), and the protruding part is used for adornment pointer. The output shaft (1) is equipped with a cross-shaped plastic sheet (9), a positive direction hairspring (6), a hairspring spacer (7), a reverse direction hairspring (8), and a cross-shaped plastic sheet (9) is equipped with a coil (10) and Balance weight (11), coil (10) is enclosed within...
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