Abstract: A rotary damper that does not cause a problem that a rotational resistance fluctuates during a rotation of a rotor is provided. On a bottom surface of a housing, a plurality of walls are erected concentrically centered on a bearing portion. Notches are formed in the walls at point-symmetrical peripheral positions centered on the bearing portion, and each notch is distributed and arranged at peripheral positions that evenly divide a circumference centered on the bearing portion between the adjacent walls. On a side surface of a rotor, a plurality of walls are erected concentrically centered on a center pin at a pitch deviated from a standing pitch of the walls of the housing by a half pitch. Notches are formed in the walls at point-symmetrical peripheral positions centered on the center pin, and each notch is distributed and arranged at peripheral positions that evenly divide a circumference.

Abstract: An opening/closing direction restriction mechanism for a manual shutter device and an opening/closing direction restriction mechanism for a suspended sliding door device. This opening/closing direction restriction mechanism is provided with: a flange fixedly mounted on a fixed shaft; a bracket which is loosely fitted to the fixed shaft and can be integrally rotated with a winding member; and a two-way clutch which can be switched between a reverse rotation inhibited state in which the revolution of a planetary external gear along a winding direction of the winding member is allowed and the revolution of the planetary external gear along an unwinding direction is inhibited, and a forward rotation inhibited state in which the revolution of the planetary external gear along the winding direction of the winding member is inhibited and the revolution of the planetary external gear along the unwinding direction is allowed.

Abstract: An opening/closing direction restriction mechanism for a manual shutter device and an opening/closing direction restriction mechanism for a suspended sliding door device. This opening/closing direction restriction mechanism is provided with: a flange fixedly mounted on a fixed shaft; a bracket which is loosely fitted to the fixed shaft and can be integrally rotated with a winding member; and a two-way clutch which can be switched between a reverse rotation inhibited state in which the revolution of a planetary external gear along a winding direction of the winding member is allowed and the revolution of the planetary external gear along an unwinding direction is inhibited, and a forward rotation inhibited state in which the revolution of the planetary external gear along the winding direction of the winding member is inhibited and the revolution of the planetary external gear along the unwinding direction is allowed.

Abstract: A rotary damper having a simple self-standing mechanism which does not cause an inconvenience such as bounce of an opening/closing member at an end of an opening operation of the opening/closing member such as toilet lid is provided. A rotary damper has a housing, a shaft, a vane, a sliding member, an O ring, and a cap as main components. A shaft portion, formed in a pressure chamber of the housing, includes a blade portion protruding in an axial direction of the shaft portion. A cutout portion is formed in a center portion between both ends of the blade portion. On another side surface of the blade portion, a first groove is formed in a circumferential direction from a base of the blade portion to the outer periphery of the shaft portion. A second groove is formed on the outer periphery of the shaft portion spaced from the first groove.

Abstract: A braking device for an automatic winding type screen device that stably brakes the automatic winding of a screen regardless of the temperature. The braking device comprises: a housing that is provided inside a winding shaft so as to be able to turn with the winding shaft to wind up a screen; a sleeve that is inserted into the housing and is mounted to a bracket so as not to be able to turn; and a mobile element that can rotate with the housing. A first spring and a second spring are provided on the outer side of the sleeve so as to have the mobile element therebetween. The mobile element twists forward on the sleeve along with rotation of the housing, and biasing forces of the first spring and the second spring that expand and contact with the forward twist of the mobile element brakes the rotation of the winding shaft.

Abstract: [Problem] To provide a safety device for a sliding door with which finger pinching can be automatically prevented without manually operating a stopper, and which can be smoothly closed without a resistance that acts when closing the sliding door. [Solution] A safety device for a sliding door is provided with a guide frame 11 and a feed plate 12 that are mounted on the opening side and the sliding door side, respectively, so as to face each other. A low-speed movement groove 38a and a lock groove 38b are provided on the guide frame 11 side. A contact face 12c that is inclined to contact a disk roller is provided on the feed plate 12 side. In addition, when the feed plate 12 collides with the disk roller 14 at a force stronger than or equal to a prescribed value, the shaft 14b of the disk roller 14 is moved from inside the low-speed movement groove 38a to inside the lock groove 38b and the movement of the disk roller 14 in the left-right direction is locked.

Abstract: Rod fixing device with the same force irrespective of whether movement of a rod is up or down. A locking mechanism moves with a first rod inside a second rod and a stopper having a contacting surface portion contacting an inner circumferential surface of the second rod. A holder which rotatably holds the stopper so that the contacting surface portion contacts the inner circumferential surface of the second rod, and a spring imparts the stopper with a forces generating a fixing frictional force between the first rod and the second rod by causing the contacting surface portion to come into contact with the inner circumferential surface of the second rod. Movement of the first rod toward one side causes the contacting surface portion to rotate toward a side separating from the inner circumferential surface of the second rod, and movement of the first rod toward the other side is a movement against the fixing frictional force.

Abstract: There is provided a hinge arm damper mechanism that reliably achieves a damper effect corresponding to a braking force of an elastic member. The hinge arm damper mechanism is configured to include a pinion gear, a pair of racks and, two sets of heavy load springs and, a pair of slide bars and, and a housing. The housing includes a box-shaped case and a plate-shaped cover. The case accommodates the pinion gear, the pair of racks and, the two sets of heavy load springs and, and the pair of slide bars and. A rotational torque applied to a hinge arm is transmitted to the racks and via a rotational motion of the pinion gear, and is converted into a linear motion of the racks and. The linear motion of the racks and is reliably braked by the respective springs and.

Abstract: A torque adjustment function-provided rotary damper capable of easily adjusting a torque without needing to use a tool, even in a case where a space cannot be secured on an end portion side of a casing. An adjustment lever is an operation member having an engagement portion and a knob portion. The engagement portion links with an adjuster by engaging with an adjustment end portion such that a cutout fits to a fitting portion. The knob portion is formed integrally with the engagement portion by protruding radially from an outer periphery side of a the casing. The knob portion extends to a guide portion along an axial direction of the casing in its outer periphery. The guide portion has a semi-ring shape which is partially cut out. The guide portion is rotatably disposed along an outer periphery of a shaft side cap that closes an end portion of the casing.

Abstract: A reverse input lock clutch has a fitting portion of a spring stopper rotatably fitted in a cylindrical dent formed by being surrounded by an inner diameter portion on an end surface of an output member on a side opposite to a fixed member. A locking portion rotates with the fitting portion while having one end of a first elastic member locked by a holder groove. Adjustment of the rotation position of the lock portion with respect to the output member is made by rotating the fitting portion within a range of a groove length of an adjustment groove with respect to the output member and anchoring an adjustment pin at a desired rotation position to the adjustment pin fixing portion so as to fix the fitting portion on the output member.

Abstract: A reverse input lock clutch has a fitting portion of a spring stopper rotatably fitted in a cylindrical dent formed by being surrounded by an inner diameter portion on an end surface of an output member on a side opposite to a fixed member. A locking portion rotates with the fitting portion awhile having one end of a first elastic member locked by a holder groove. Adjustment of the rotation position of the lock portion with respect to the output member is made by rotating the fitting portion within a range of a groove length of an adjustment groove with respect to the output member and anchoring an adjustment pin at a desired rotation position to the adjustment pin fixing portion so as to fix the fitting portion on the output member.