Abstract: In a fastening method of press-fitting and fixing an axial end section of a second-stage pinion (1) into a circular opening (21) of a first-stage planetary carrier (2), first press-fitting external teeth (13a), which have an addendum circle larger than an addendum circle of the other pinion part and has a sharp tooth top, are generated through manufacturing of tooth-cutting at an outer circumferential section of the axial end portion of the second-stage pinion (1). Then, a press-fit bore (22) that has a smaller diameter than the addendum circle of the press-fitting external teeth (13a), is formed at the circular opening (21) of the first-stage planetary carrier (2). The press-fitting external teeth (13a) are then press-fitted into the press-fit bore (22) so that tooth tops thereof cut into an inner circumference surface of the press-fit bore (22) to secure fastening strength between the second-stage pinion (1) and the first-stage planetary carrier (2).

Abstract: A brake-equipped retracting device (3) returns a liquid crystal display device (1) from a deployed position (1B) to a stored position (1A) using an elastic returning force of a spiral spring (18) that is wound up when the liquid crystal display device (1) is opened by the rotational force of a motor. A braking force for preventing the liquid crystal display device (1) from returning with too much force is applied to an input shaft (17a) of a reducer by having a rope (21) whose tensile force increases and decreases in relation to the opening and closing of the liquid crystal display device (1) be wound around a slip clutch (15) that is connected to the input shaft (17a). In emergency situations such as when the rope (21) breaks, a centrifugal grip (53) of a rotation-restraining mechanism (50) strikes an engagement notch surface (56b) on a fixed side, and the rotation of the input shaft (17a) is forcibly halted.

Abstract: In a brake-equipped retracting mechanism, rotational force of a motor is used to open a liquid crystal display device from a retracted position to an open position, a power spring is wound up in conjunction with this opening operation, and elastic restoring force thereof is used to return the liquid crystal display device from the open position to the retracted position. A rope for developing a greater or smaller tensile force in conjunction with opening and closing of the liquid crystal display device is wound around a slip clutch linked to a reducer input shaft, whereby braking force for preventing the liquid crystal display device from an abrupt return is applied to the reducer input shaft. The braking force gradually decreases as the liquid crystal display device returns to the retracted position, and the liquid crystal display device can therefore be returned at a substantially constant speed.