Detecting device for detecting the traveling state of a moving o

Details Detecting device for detecting the traveling state of a moving o Detecting device for detecting the traveling state of a moving o

1997-08-11

1999-07-13

Ip, Paul

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318560, 399 21, 399 45, 399389, 399150, H01L 3112, G03G 2100

Patent

active

059231408

ABSTRACT:
A detecting device includes: an actuator with its end placed in a conveying path of a moving object such as a sheet etc., pivotally supported by a rotary shaft so that it can sway as the moving object passes by; a slit arm integrally formed with the actuator and having a slit therein and an optical sensor disposed below the actuator. In this arrangement, the slit arm having a slit therein is placed in the path of the optical sensor. An urging portion for returning the actuator to the standby position is provided for the slit arm. The abutment surface P of the urging portion abutting the unit base of the optical sensor is formed inclined. A component force E causing the actuator to bounce, which is proportional to a repulsive force D normal to the abutment surface P when the abutment surface abuts the unit base abutment surface P, is smaller than the repulsive force D. Therefore, the distance of the bouncing of the actuator becomes smaller, thus preventing chattering.

REFERENCES:
patent: 5329119 (1994-07-01), Swartz
patent: 5652943 (1997-07-01), Matsuo
patent: 5754925 (1998-05-01), Yui et al.
Patent Abstracts of Japan--58 033719--dated Feb. 28, 1983.

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