Abstract: In a rotor structure of a permanent magnet type rotary machine comprising a cylindrical permanent magnet 3 fixed on an outer peripheral surface of a rotor shaft 2, wherein torque acting on the permanent magnet 3 is transmitted to the rotor shaft 2, the rotor structure further comprises two annular side plates 4 and a holding ring 5. Each side plate has an axial hole 4a into which the rotor shaft 2 is fitted so as to rotate with the side plates integrally and the side plates 4 are attached on the both end surface of the permanent magnet 3, respectively so as to confront with each other. A circular U-shaped groove 4c coaxially with the axial hole 4a is provided at a end surface 4b for facing with the permanent magnet 3 of each side plate 4. The holding ring 5 is formed cylindrically and covers circumferential sections of the permanent magnet 3 and the side plates 4 and fasten the permanent magnet 3 and the side plates 4 so as to move them integrally.

Abstract: In a rotor structure of a permanent magnet type rotary machine comprising a cylindrical permanent magnet 3 fixed on an outer peripheral surface of a rotor shaft 2, wherein torque acting on the permanent magnet 3 is transmitted to the rotor shaft 2, the rotor structure further comprises two annular side plates 4 and a holding ring 5. Each side plate has an axial hole 4a into which the rotor shaft 2 is fitted so as to rotate with the side plates integrally and the side plates 4 are attached on the both end surface of the permanent magnet 3, respectively so as to confront with each other. A circular U-shaped groove 4c coaxially with the axial hole 4a is provided at a end surface 4b for facing with the permanent magnet 3 of each side plate 4. The holding ring 5 is formed cylindrically and covers circumferential sections of the permanent magnet 3 and the side plates 4 and fasten the permanent magnet 3 and the side plates 4 so as to move them integrally.

Abstract: An elevator hoisting machine includes a first rotary part having a sheave, a brake-side end plate, and a brake disk integrally formed together, a second rotary part having a rotor with a permanent magnet and a motor-side end plate integrally formed together, wherein the second rotary part is coaxially coupled to the first rotary part with the sheave abutting on the rotor. A sheave casing serves to cover the first rotary part and support the inner periphery of the brake-side end plate, and includes a brake main body which makes contact with the brake disk body to provide braking. A frame serves to covers the second rotary part and support the inner periphery of the motor-side end plate, and includes a stator arranged to face the permanent magnet. The sheave casing and frame are coupled together to form an external enclosure.

Abstract: An elevator hoisting machine includes a first rotary part having a sheave, a brake-side end plate, and a brake disk integrally formed together, a second rotary part having a rotor with a permanent magnet and a motor-side end plate integrally formed together, wherein the second rotary part is coaxially coupled to the first rotary part with the sheave abutting on the rotor. A sheave casing serves to cover the first rotary part and support the inner periphery of the brake-side end plate, and includes a brake main body which makes contact with the brake disk body to provide braking. A frame serves to covers the second rotary part and support the inner periphery of the motor-side end plate, and includes a stator arranged to face the permanent magnet. The sheave casing and frame are coupled together to form an external enclosure.

Abstract: A hoisting machine includes a stationary part having a shank and a stationary frame integrally formed with the shank, and a motor stator provided to the stationary frame. A rotary part includes a rotary frame rotatably supported to the shank through a bearing and facing the stationary frame, a sheave integrally formed with the rotary frame on the side opposite to the stationary frame, a motor rotator arranged at the outer periphery of the rotary frame and facing the motor stator, and a brake wheel integrally formed with the rotary frame and having a larger diameter than that of the sheave. A braking device is mounted to the stationary frame and coming in contact with the brake wheel for braking operation.

Abstract: A braking device includes a brake wheel, a pair of rotation shafts, a pair of brake arms which is rotatably supported through the rotation shafts, a pair of brake pads arranged at one end of the brake arms and contacting and separating from the brake wheel, and a brake part connected to another end of the brake arms for providing and releasing a braking force of the brake pads. When the centers of the rotation shafts are fulcrums, the centers of contact of the brake pads with the brake wheel are points of action, and the connections between the brake arms and the brake part are power points, the fulcrums, the points of action, and the power points are located in a semicircular area of the brake wheel.

Abstract: A hoisting machine includes a stationary part having a shank and a stationary frame integrally formed with the shank, and a motor stator provided to the stationary frame. A rotary part includes a rotary frame rotatably supported to the shank through a bearing and facing the stationary frame, a sheave integrally formed with the rotary frame on the side opposite to the stationary frame, a motor rotator arranged at the outer periphery of the rotary frame and facing the motor stator, and a brake wheel integrally formed with the rotary frame and having a larger diameter than that of the sheave. A braking device is mounted to the stationary frame and coming in contact with the brake wheel for braking operation.

Abstract: A braking device includes a brake wheel, a pair of rotation shafts, a pair of brake arms which is rotatably supported through the rotation shafts, a pair of brake pads arranged at one end of the brake arms and contacting and separating from the brake wheel, and a brake part connected to another end of the brake arms for providing and releasing a braking force of the brake pads. When the centers of the rotation shafts are fulcrums, the centers of contact of the brake pads with the brake wheel are points of action, and the connections between the brake arms and the brake part are power points, the fulcrums, the points of action, and the power points are located in a semicircular area of the brake wheel.