TORQUE TRANSMISSION DEVICE

PROBLEM TO BE SOLVED: To stabilize torque at the initial stage of rotation of a torque limiter using a coil spring and to provide an increased lubrication life. SOLUTION: A coil spring 3 is incorporated between an inner ring 1 and an outer ring 2 rotatably arranged at the outside, and the coil sprin...

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Bibliographic Details
Main Authors TOJO NORIKO, TAKADA SEIICHI, ITOU MAKIKO
Format Patent
LanguageEnglish
Published 14.04.1998
Edition6
Subjects
BLASTING
BRAKES
CASTING
CLUTCHES
COUPLINGS FOR TRANSMITTING ROTATION
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
POWDER METALLURGY
THERMAL INSULATION IN GENERAL
TRANSPORTING
WEAPONS
WORKING METALLIC POWDER
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Summary:PROBLEM TO BE SOLVED: To stabilize torque at the initial stage of rotation of a torque limiter using a coil spring and to provide an increased lubrication life. SOLUTION: A coil spring 3 is incorporated between an inner ring 1 and an outer ring 2 rotatably arranged at the outside, and the coil spring 3 is provided with a small coil part 3a to fasten the outside diameter surface of the inner ring 1. One of bent pieces 4 and 5 formed at the two ends of the coil spring 3 is coupled to the outer ring 2, and the other bend piece 5 is coupled to a regulation ring 6 pressed in the opening end part of the outer ring 2. The inner ring 1 is formed of a sintered substance having sintering density of 5.4-6.4g/cm and the infinite number of small holes formed in an internal part are impregnated with a lubricant. Further, through sizing of the inner ring, the opening of the small hole is throttled, a contact part between the inner ring 1 and the small diameter coil part 3a is lubricated by a lubricant with which the surface of the inner ring 1 oozes and initial torque is stabilized. By throttling the opening of the small hole by sizing, an outflow amount of lubrication oil is limited to provide an increase lubrication life.
Bibliography:Application Number: JP19960319987