Abstract: A circulator includes a main body forming an air passage, an impeller, and a motor. The main body is cylindrical, in which a discharge port is formed at one end thereof, a suction port is formed at the other end thereof, and the air passage extending from the suction port to the discharge port is formed in the inside thereof. An orifice is provided annularly along an inner periphery of the air passage to locally narrow the air passage. An impeller is disposed in a part of the air passage having been narrowed by the orifice. A motor is connected to the impeller to rotate the impeller so that the air having been sucked from the suction port is blown from the discharge port.

Abstract: A circulator includes a main body forming an air passage, an impeller, and a motor. The main body is cylindrical, in which a discharge port is formed at one end thereof, a suction port is formed at the other end thereof, and the air passage extending from the suction port to the discharge port is formed in the inside thereof. An orifice is provided annularly along an inner periphery of the air passage to locally narrow the air passage. An impeller is disposed in a part of the air passage having been narrowed by the orifice. A motor is connected to the impeller to rotate the impeller so that the air having been sucked from the suction port is blown from the discharge port.

Abstract: In a rotary damper capable of being easily assembled by reducing the remaining air inside an accommodation portion and reducing the non-uniformity of damping torque, a center shaft 73 is provided in the center of a fixing and supporting member 71, an inner cylinder wall 63 into which the center shaft 73 is inserted rotatably is provided in a driven rotation member 61, an O ring 81 which prevents the leakage of viscous fluid 101 from between the driven rotation member 61 and the fixing and supporting member 71 is provided, a first path 70 which enables the accommodation portion 91 to communicate with its outside is provided between the center shaft 73 and an inner circumference face of the inner cylinder wall 63, and a hole 63c which allows the bottom side of the O ring 81 inside the accommodation portion 91 to communicate with the first path 70 is provided in the driven rotation member 61.

Abstract: A rotary damper (D) is constituted by: housings (11, 51); a silicon oil (21) being housed inside the housings (11, 51); a rotor (31) wherein a resistive portion (36) moving through the silicon oil 21 inside the housings (11, 51) is provided in an axial portion (32) which is housed inside the housings (11, 51) and projects from the housings (11, 51); and an O-ring (61) preventing the silicon oil (21) from leaking between the axial portion (32) and the housing (51), and multiple arc-like through-bores (37) are provided in the resistive portion (36) on a concentric circle, and depressed grooves (38) communicating with the arc-like through-bores (37) are provided. Accordingly, during the assembly, the air being mixed into the housing is not allowed to be excessively compressed, so that even if the rotor rotates bi-directionally, the noise being caused by the air being mixed into the housing can be prevented.

Abstract: In a rotary damper capable of being easily assembled by reducing the remaining air inside an accommodation portion and reducing the non-uniformity of damping torque, a center shaft 73 is provided in the center of a fixing and supporting member 71, an inner cylinder wall 63 into which the center shaft 73 is inserted rotatably is provided in a driven rotation member 61, an O ring 81 which prevents the leakage of viscous fluid 101 from between the driven rotation member 61 and the fixing and supporting member 71 is provided, a first path 70 which enables the accommodation portion 91 to communicate with its outside is provided between the center shaft 73 and an inner circumference face of the inner cylinder wall 63, and a hole 63c which allows the bottom side of the O ring 81 inside the accommodation portion 91 to communicate with the first path 70 is provided in the driven rotation member 61.

Abstract: A rotary damper includes a driven-to-rotate member having integrally a driven-to-rotate part for coupling to a drive member and a first inner cylindrical wall, the first inner cylindrical wall including a locking part at a bottom end of the first inner cylindrical wall; a fixed support member for holding the driven-to-rotate member so as to rotate freely; a receiving part formed between the fixed support member and the driven-to-rotate member; and a seal member for sealing an outer perimeter of the receiving part so that the driven-to-rotate member and the fixed support member are capable of relative rotation. A viscous fluid is provided inside the receiving part for damping relative rotation between the driven-to-rotate member and the fixed support member.

Abstract: A rotary damper includes a driven-to-rotate member with a driven-to-rotate part for coupling to a drive member, a fixed support member for holding the driven-to-rotate member so as to rotate freely, a receiving part formed between the fixed support member and the driven-to-rotate member, a seal for sealing an outer perimeter of the receiving part so that the driven-to-rotate member and the fixed support member are capable of relative rotation, and a viscous fluid inside the receiving part for damping the relative rotation between the driven-to-rotate member and the fixed support member. The rotary damper is easy to assemble by virtue of eliminating the accumulation of unwanted air inside the receiving part. Since air does not mix with the viscous fluid, the torque precision can be made constant.

Abstract: A rotary damper includes a driven-to-rotate member having integrally a driven-to-rotate part for coupling to a drive member and a first inner cylindrical wall, the first inner cylindrical wall including a locking part at a bottom end of the first inner cylindrical wall; a fixed support member for holding the driven-to-rotate member so as to rotate freely; a receiving part formed between the fixed support member and the driven-to-rotate member; and a seal member for sealing an outer perimeter of the receiving part so that the driven-to-rotate member and the fixed support member are capable of relative rotation. A viscous fluid is provided inside the receiving part for damping relative rotation between the driven-to-rotate member and the fixed support member.

Abstract: A door handle includes a damper wherein a difference in torque changed according to a rotational direction becomes large. A rotor and a valve are completely separated and only the rotor rotates, so that it is possible to significantly reduce torque applied to the rotor. When the rotor and the valve are connected or separated, torque applied to the rotor is changed greatly. Accordingly, instead of gradually changing torque according to a rotational angle of the rotor, it is possible to set a specific point where torque is changed.

Abstract: A rotary damper includes a driven rotary member having a driven rotary part for engaging a driving member, and a stationary support member for rotatably supporting the driven rotary member. A housing is disposed between the stationary support member and the driven rotary member, and a viscous fluid is disposed in the housing for damping the driven rotary member when the driven rotary member rotates relative to the stationary support member. A sealing member is disposed on the housing for sealing an outer peripheral edge of the housing so as to allow the driven rotary member to rotate relative to the stationary support member. An opening is formed in the driven rotary member or the stationary support member for communicating a portion of the housing inside the sealing member with atmosphere. The opening is closed when or after the driven rotary member and the stationary support member are assembled.

Abstract: A rotary damper includes a housing, a viscous fluid filled in the housing, and a rotor disposed inside the housing and having a shaft part partially protruding from the housing. The rotor has a plurality of rotating resistance parts provided on the shaft part for moving in the viscous fluid inside the housing. A first sloping part is provided on an upstream side of the rotating resistance part to form a distance relative to an inner surface of the housing gradually decreasing toward a downstream side, and a second sloping part is provided on a downstream side of the rotating resistance part to form a distance relative to the inner surface of the housing gradually increasing toward a downstream side.

Abstract: A rotary damper includes a housing; a viscous fluid filled in the housing; a rotor disposed inside the housing and having a shaft part partially protruding from the housing and a resistance part provided on the shaft part for moving in the viscous fluid inside the housing; and a seal member for sealing between the shaft part and the housing to prevent leakage of the viscous fluid. The rotary damper further includes a first sloping part provided on an upstream side of the rotating resistance part and having a distance relative to an inner surface of the housing gradually decreasing toward a downstream side; and a second sloping part provided on a downstream side of the rotating resistance part and having a distance relative to the inner surface of the housing gradually increasing toward a downstream side.

Abstract: A rotary damper (D) is constituted by: housings (11, 51); a silicon oil (21) being housed inside the housings (11, 51); a rotor (31) wherein a resistive portion (36) moving through the silicon oil 21 inside the housings (11, 51) is provided in an axial portion (32) which is housed inside the housings (11, 51) and projects from the housings (11, 51); and an O-ring (61) preventing the silicon oil (21) from leaking between the axial portion (32) and the housing (51), and multiple arc-like through-bores (37) are provided in the resistive portion (36) on a concentric circle, and depressed grooves (38) communicating with the arc-like through-bores (37) are provided. Accordingly, during the assembly, the air being mixed into the housing is not allowed to be excessively compressed, so that even if the rotor rotates bi-directionally, the noise being caused by the air being mixed into the housing can be prevented.

Abstract: A damper device applies damping force to a movable body assembled on a fixed body. The damper device includes a damping part, a clutch case attached to one of the fixed body and the movable body in a state having received the damping part, and a rack part moving or relatively moving accompanying movement of the movable body. The damper device effectively operate the movable body.

Abstract: A rotary damper includes a driven-to-rotate member with a driven-to-rotate part for coupling to a drive member, a fixed support member for holding the driven-to-rotate member so as to rotate freely, a receiving part formed between the fixed support member and the driven-to-rotate member, a seal for sealing an outer perimeter of the receiving part so that the driven-to-rotate member and the fixed support member are capable of relative rotation, and a viscous fluid inside the receiving part for damping the relative rotation between the driven-to-rotate member and the fixed support member. The rotary damper is easy to assemble by virtue of eliminating the accumulation of unwanted air inside the receiving part. Since air does not mix with the viscous fluid, the torque precision can be made constant.

Abstract: A rotary damper includes a driven rotary member having a driven rotary part for engaging a driving member, and a stationary support member for rotatably supporting the driven rotary member. A housing is disposed between the stationary support member and the driven rotary member, and a viscous fluid is disposed in the housing for damping the driven rotary member when the driven rotary member rotates relative to the stationary support member. A sealing member is disposed on the housing for sealing an outer peripheral edge of the housing so as to allow the driven rotary member to rotate relative to the stationary support member. An opening is formed in the driven rotary member or the stationary support member for communicating a portion of the housing inside the sealing member with atmosphere. The opening is closed when or after the driven rotary member and the stationary support member are assembled.

Abstract: A door handle includes a damper wherein a difference in torque changed according to a rotational direction becomes large. A rotor and a valve are completely separated and only the rotor rotates, so that it is possible to significantly reduce torque applied to the rotor. When the rotor and the valve are connected or separated, torque applied to the rotor is changed greatly. Accordingly, instead of gradually changing torque according to a rotational angle of the rotor, it is possible to set a specific point where torque is changed.