Abstract: Provided is a spring lock mechanism including: a lock drum (11) provided on either one of a first member (20) and a second member (20); a coil spring (12) secured to the other member, abutting on the lock drum (11), and locking turning of the second member (30) in one direction relative to the first member (20) due to a frictional force; and a switching mechanism causing the second member (30) to turn relative to the first member (20) to switch a state in which the locking has been established and a state in which the locking has been released and held, in which the coil spring (12) abuts on an inner circumferential surface of the lock drum (11), the diameter of the coil spring (12) increases through compression of a spring wire material of the coil spring (12) in a longitudinal direction caused by the turning of the second member (20), the coil spring thus further presses the inner circumferential surface of the lock drum (11) and locks the turning due to the frictional force, and the switching mechanism acc

Abstract: Provided is a spring lock mechanism including: a lock drum (11) provided on either one of a first member (20) and a second member (20); a coil spring (12) secured to the other member, abutting on the lock drum (11), and locking turning of the second member (30) in one direction relative to the first member (20) due to a frictional force; and a switching mechanism causing the second member (30) to turn relative to the first member (20) to switch a state in which the locking has been established and a state in which the locking has been released and held, in which the coil spring (12) abuts on an inner circumferential surface of the lock drum (11), the diameter of the coil spring (12) increases through compression of a spring wire material of the coil spring (12) in a longitudinal direction caused by the turning of the second member (20), the coil spring thus further presses the inner circumferential surface of the lock drum (11) and locks the turning due to the frictional force, and the switching mechanism acc

Abstract: A display control method includes: based on information acquired from an information processing terminal that accesses content provided by an information processing device, computing a degree of interest and a degree of perplexity, with respect to the content, of a user using the information processing terminal; and, based on the computed degree of interest and the computed degree of perplexity, displaying a symbol corresponding to the information processing terminal at a corresponding position in a region that has degree of interest and degree of perplexity as axes.

Abstract: A display control method includes: based on information acquired from an information processing terminal that accesses content provided by an information processing device, computing a degree of interest and a degree of perplexity, with respect to the content, of a user using the information processing terminal; and, based on the computed degree of interest and the computed degree of perplexity, displaying a symbol corresponding to the information processing terminal at a corresponding position in a region that has degree of interest and degree of perplexity as axes.