Provided is a rotary electric machine including a stator including a plurality of stator pieces, a rotor being arranged inside the stator and rotating about a rotation axis, a housing holding the stator and the rotor, a lid member preventing the stator and the rotor from coming out of the housing, and a cylindrical frame forming the stator by containing the plurality of stator pieces and being internally mounted in the housing, in which a first fixing portion and a second fixing portion for fixing the frame to the housing are disposed at both end portions of the frame along an extending direction of the rotation axis.

An object of the present invention is to hold a holding member appropriately in a casing. A rotary electric machine includes a rotor having a drive shaft, a stator provided on an outer periphery of the rotor, a bearing B2 that rotatably supports the drive shaft, a holding member that contains an aluminum alloy member and holds the bearing, and a casing that houses the rotor, the stator, the bearing, and the holding member. The casing is made of a member that does not grow permanently or an aluminum alloy member that is permanently grown when the holding member is fixed to the casing. The holding member is in a state before permanent growth before being fixed in the casing, and the holding member grows permanently to be fixed more firmly to the casing.

A structural concept of a drive for an actuation device in a drive train of a motor vehicle, contains an electric motor with a motor housing shell, a circuit carrier with a control unit for controlling the electric motor, and an output shaft of a gearbox with a gearbox housing shell. The rotor shaft of the electric motor is arranged axially with respect to the output shaft of the gearbox, and the rotor shaft of the electric motor is accommodated in the output shaft in a rotatably mounted manner in the region of the gearbox housing shell. The circuit carrier is arranged between the electric motor and the output shaft of the gearbox, and the rotor shaft leads through a cutout in the circuit carrier.

In a rotating electric machine system, a rotating shaft of a rotating electric machine includes a first end part and a second end part. The first end part includes a projecting distal end that projects out to the exterior of a rotating electric machine housing. A rotational parameter detector is disposed on the projecting distal end. Electric terminal portions electrically connected to the rotating electric machine are disposed at one end part of the rotating electric machine housing. When viewed from a side along an axial direction of the rotating electric machine system, the electric terminal portions and the rotational parameter detector are arranged in parallel.

The invention proposed damper protection for direct drive motor angle limits This mechanism includes main components: Assembly guideway-spring, and Assembly angle limit bar, and Assembly direct-drive motor. The content mentioned in the invention describes the damping spring integrated inside the direct motor to protect the device when operating within the desired stroke limit It can be applied to high-precision devices and motors. The invention's products can be applied in Direct-drive motor mechanisms that limit rotation angle with high-accuracy such as robotic arms, multi-sensor automatic observation devices, or unmanned equipment.

An electromechanical cylinder contains a casing, an actuating rod mounted so as to be able to move longitudinally relative to the casing, an electric motor provided with a rotating rotor shaft, a mechanism for transforming a rotational movement of the rotor shaft of the electric motor into a linear translational movement of the actuating rod, and at least one bearing for guiding the rotor shaft of the electric motor in rotation relative to the casing and for supporting the rotor shaft. The cylinder further contains a sleeve that is fastened to the casing and inside which is mounted the bearing, and at least one load sensor that is mounted on the sleeve while being offset axially relative to the bearing.

A stator of an electric motor is rotated and a rotational force of the stator is used for a rotation of a rotor. Thus, the electric motor capable of obtaining high output is provided. A stator 40 is rotated in electric motors 80a, 80b. When rotating a rotor 30, a rotational force of the stator 40 is used for a rotation of the rotor 30. Consequently, higher output can be obtained compared to the conventional electric motor. In addition, the rotational force of the rotor 30 is accumulated as the rotational force of the stator 40 as kinetic energy. In case of a restarting or the like, since the rotational force of the stator 40 is used for the rotation of the rotor 30 as the kinetic energy, the energy loss is small and the kinetic energy of the rotor 30 and the stator 40 can be efficiently used. In addition, in the operation area where the stator 40 is rotated, counter electromotive force Ke or inductive reactance XL applied to coils 42 is reduced. Consequently, the loss is suppressed and the supply power can be efficiently used.

A power tool is provided with a tool housing, a support plate provided within the tool housing, a rear tool cap mounted on a rear end of the tool housing, and a brushless direct-current (BLDC) motor received within the housing. The motor includes a stator assembly having a stator core and stator windings, a front motor bearing supported by the support plate, a rear motor bearing supported by the rear tool cap, and a rotor including a rotor core and a magnet ring mounted around the rotor core. The rotor core defines an annular recess within which at portion of the front bearing and a portion of the support plate are located such that the a radial plane intersects the front bearing, the magnet ring, and the stator core.

Wind generator (100) having a horizontal axis, installed in electric transportation means that can be of different types, as: car vehicles, motor vehicles, rail vehicles, water vehicles and air vehicles; said wind generator (100) comprising: —an air conveyor, called shell (101), having a cylindrical shape that is empty inside, having some openings on the outer surface, so called oval-shaped nozzles (104a, 104b, . . . ); —a horizontal wind turbine (107), comprising a rotary group of wind blades (112a, 112b, . . . ) fixed to a union ogive (116); —a transmission axis (109), being rotating and horizontal, where said turbine (107) is installed with its respective ogive (116) placed at the front part of said axis (109) and where an electric generator (102) is installed at the rear part of said axis (109), through a rotary element of said electric generator (102), so that a rotation of turbine (107) is transmitted, through a rotation of axis (109), to the rotary element of the electric generator (102); —said electric generator (102), comprising said rotary element and a fixed element, that is connected to the wind turbine (107) through the transmission axis (109); the electric generator (102) is further connected, by using electric cables (105), to some external electric accumulators; —at least two ball bearings (108, 111) anchoring, through connection elements, said rotary transmission axis (109) together either with the wind turbine (107) and the electric generator (102), in a stable position inside said shell (101), at the same time allowing the rotary motion of said rotating axis (109) on itself; —a cover (103) closing the rear part of said shell (101); —at least two supporting elements (106, 110) placed on the outer surface of said shell (101), in order to achieve an anchorage of the wind generator (100) to the transportation means on which it is installed, so that an air flow coming from the front part of said wind generator (100), having impact on said blades (112a, 112b, . . . ), forces said transmission axis (109) to a rotary motion and therefore forces the rotary element of the electric generator (102) to a rotary motion, generating therefore electric energy that can be immediately transmitted to an electric engine and/or other devices belonging to the transportation means, otherwise the electric energy can be saved into sa

An electric motor includes a rotor mounted on a shaft, a stator arranged around the rotor, and front and rear bearings connected to each other by an attachment component. The front and rear bearings form an internal cavity housing the rotor and the stator, characterized in that the electric motor further includes a bell-shaped thermal insulation cover completely covering the rear bearing and a portion of the front bearing, extending axially from an end face of the front bearing, the thermal insulation cover forming, with the front bearing, at least one inner fluid circulation channel inside which a coolant flows.