Title:
WEIGHT MEASURING DEVICE
Document Type and Number:
Japanese Patent JP2021113747
Kind Code:
A
Abstract:
To provide a magnetic weight measuring device capable of being reduced in size, thickness and power consumption.SOLUTION: A weight measuring device 1 comprises: an upper body 2 that supports an object to be measured M; a lower body 3 disposed below the upper body 2; an elastic member 4 that relatively movably supports the upper body 2 and the lower body 3 correspondingly to the weight of the object to be measured M; a first permanent magnet 5 disposed on the upper body; a first sensor 6 disposed on the lower body 3, which is switched between on and off by a magnetic field which changes by having the distance from the first permanent magnet 5 changed by the weight of the object to be measured M; a power source 7 that supplies power when the first sensor 6 is on; a second permanent magnet 8 disposed on the upper body; and a second sensor 9 disposed on the lower body 3, which is driven by the power from the power source 7, and whose output value is changed correspondingly to the strength of a magnetic field which is changed by having the distance from the second permanent magnet 8 changed by the weight of the object to be measured M.SELECTED DRAWING: Figure 2
Inventors:
KUMAGAI EIJI
Application Number:
JP2020006639A
Publication Date:
August 05, 2021
Filing Date:
January 20, 2020
Export Citation:
Assignee:
SHIMONISHI GIKEN KOGYO KK
International Classes:
G01G3/00; G01G3/04; G01G19/52; G01G23/00
Attorney, Agent or Firm:
Yanouchi Foreign Patent Office