Instrument displacement transform amplifier

Abstract

The invention relates to a novel instrument displacement transform amplifier with a central shaft and a flexible cord for transmission. The instrument displacement transform amplifier comprises a central shaft, a connecting flexible cord, a transmission shaft, a balance spring, upper and lower clamping plates and a limiting device, and is characterized in that a groove is arranged on the central shaft; part of the flexible cord is wound into the groove of the central shaft; and the transmission shaft can drive the flexible cord to enable the central shaft to rotate to transform and amplify the displacement. The instrument displacement transform amplifier has the advantages that since the diameter of the central shaft can be changed to be quite small and the front end of the transmission shaft can be relatively extended, the core of the instrument displacement transform amplifier has high amplification factor. Due to the flexible cord, constant friction caused by occlusion of the gears can be reduced, so the service life can be longer. The instrument displacement transform amplifier can also take a bearing as the support piece through the central shaft, so friction can be reduced and the precision can be high. Meanwhile, the instrument displacement transform amplifier is shock-resistant and has a plurality of other advantages.

Description

technical field [0001] The invention relates to a movement, in particular to a novel instrument displacement conversion amplifier with a central shaft and flexible wire transmission. Background technique [0002] At present, most of the mechanical pressure gauge movements commonly used in the market are composed of a central gear shaft, a sector gear transmission piece, a hairspring and upper and lower splints, and are driven and amplified through the engagement between the gears. Since the gear needs hob processing, its cost is relatively high, and the gear transmission will rub against each other, resulting in a shortened service life due to continuous wear and tear. And due to the limitation of the modulus and the requirement for the strength of the gear, the central gear shaft cannot be too thin, so the magnification cannot be made too large. Therefore urgently need to invent a kind of novel meter movement that can overcome above shortcoming simultaneously. Contents o...

AI Technical Summary

Problems solved by technology

Since the gear needs hob processing, its cost is relatively high, and the gear transmission will rub against each other, resulting in a shorter service life due to continuous wear

And because the processing of the gear is limited by the modulus and the requirements for the strength of the gear, the shaft of the central gear cannot be too thin, so the magnification cannot be made very large

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