Abstract: Provided is a rotary damper having a first valve provided in a first oil passage, the rotary damper including an oil chamber filled with oil; a vane located in the oil chamber; a groove which is formed in the vane and functions as a valve box of the first valve; a valve body of the first valve which moves while being in contact with a bottom surface of the groove; and an elastic body which applies elasticity to the valve body, and causes the valve body to come into contact with a wall surface of the oil chamber when the oil does not flow, in which the bottom surface of the groove is a slope, and thereby the valve body which is in contact with the wall surface when receiving oil pressure from one direction moves away from the wall surface when receiving the oil pressure from an opposite direction.

Abstract: Provided is a rotary damper having a first valve provided in a first oil passage, the rotary damper including an oil chamber filled with oil; a vane located in the oil chamber; a groove which is formed in the vane and functions as a valve box of the first valve; a valve body of the first valve which moves while being in contact with a bottom surface of the groove; and an elastic body which applies elasticity to the valve body, and causes the valve body to come into contact with a wall surface of the oil chamber when the oil does not flow, in which the bottom surface of the groove is a slope, and thereby the valve body which is in contact with the wall surface when receiving oil pressure from one direction moves away from the wall surface when receiving the oil pressure from an opposite direction.

Abstract: The invention provides a reclining apparatus which can make a width of an apparatus small. The reclining apparatus of the present invention is provided with a first bracket (1) attached to a seat back (10), a second bracket (2) attached to a seat cushion (11), a first shaft (3) forming a rotation center of the first bracket (1), a spiral spring (5) spirally wound around the first shaft (3) and biasing a rotation in a forward direction of the first bracket (1), and a rotary damper (6) decelerating a rotating speed of the first bracket (1) against an biasing force of the spiral spring (5). The rotary damper (6) and the spiral spring (5) are arranged in parallel, and an arm (7) rotating a casing (6a) of the rotary damper (6) on the basis of a rotation of the first bracket (1) is provided between the rotary damper (6) and the second bracket (2).

Abstract: The invention provides a reclining apparatus which can make a width of an apparatus small. The reclining apparatus of the present invention is provided with a first bracket (1) attached to a seat back (10), a second bracket (2) attached to a seat cushion (11), a first shaft (3) forming a rotation center of the first bracket (1), a spiral spring (5) spirally wound around the first shaft (3) and biasing a rotation in a forward direction of the first bracket (1), and a rotary damper (6) decelerating a rotating speed of the first bracket (1) against an biasing force of the spiral spring (5). The rotary damper (6) and the spiral spring (5) are arranged in parallel, and an arm (7) rotating a casing (6a) of the rotary damper (6) on the basis of a rotation of the first bracket (1) is provided between the rotary damper (6) and the second bracket (2).