A method and system for permanently attaching a take-up screw for taking-up the axial clearance of the armature shaft of a windscreen wiper motor are disclosed. The take-up screw is screwed axially into a bore in the motor base (SM) until the screw reaches a stop position in relation to the armature shaft locked in the screw. At least one surface discontinuity is provided in the bore and/or the thread of the screw, allowing the screw to be screwed into the bore until it reaches the stop position. The screw is screwed into the bore until the stop position is reached and a screw- and/or motor base-deformation strain is applied at the discontinuity in order to deform the side surface of the screw and/or motor base (SM) and permanently attach the screw and/or motor base by wedging in the discontinuity.

A gear motor assembly includes a motor and a gearbox connected together. The motor includes a stator and a rotor. The stator has a housing, magnets attached to the housing, and brushes. The rotor includes a shaft with a rotor core, a commutator, a sleeve, a bushing and a worm mounted thereon. The bushing is slidably located between the commutator and worm. The sleeve is located between the commutator and the bushing. The rotor is balanced with the worm fix to the shaft. The gearbox includes a casing having an opening, and a worm gear received in the casing. The brushes of the motor are mounted in the casing. The shaft has a first end that extends into the gearbox. The bushing is fixed in the casing via a bushing seat.

A rotating device according to the present invention includes a motor including an outer shell, a rotating shaft protruding from the outer shell, a first inner bearing supporting the rotating shaft, and a second inner bearing supporting the rotating shaft, a plurality of gears configured to transmit rotation of the motor to an external device, and a casing. A first outer bearing and a second outer bearing are arranged at the casing, and the first outer bearing and the second outer bearing rotatably support portions of the rotating shaft protruding from end surfaces at both sides of the outer shell in a longitudinal direction of the rotating shaft.

An electric drive contains an electric motor for generating a driving force and a transmission for transmitting the driving force. The electric motor has a motor housing, a rotor arranged in the motor housing, and a motor shaft which bears the rotor. The transmission has at least two transmission elements which are coupled in terms of the transmission of force. The electric drive furthermore contains a drive housing for accommodating the electric motor and the transmission. Moreover, the motor shaft is mounted by at least a first radial bearing and a second radial bearing and braced transverse to its axis of rotation. The second radial bearing being arranged radially offset to the axis of rotation.

A small-sized motor apparatus for a vehicle, includes: a frame; a drive shaft mounted to the frame, a driven shaft to rotate dependently on the drive shaft, the driven shaft including a second worm gear; a cover coupled to the frame; a plate-shaped washer member; and a gap spring member preventing an axial movement of the driven shaft, the gap spring member being assembled in a radial direction of the driven shaft and installed such that one side of the gap spring member is contact-supported by the plate-shaped washer member and the other side of the gap spring member is supported by the frame, wherein the frame includes a slide groove that accommodates both ends of the gap spring member and the plate-shaped washer member and restricts the gap spring member from moving in an axial direction of the driven shaft.

An electric pipe expander and intelligent control circuit for the electric pipe expander are provided The electric pipe expander includes a pipe expander body and a mandrel sliding cavity disposed on the pipe expander body. A chuck body capable of clamping a pipe to be processed is disposed at an opening end of the mandrel sliding cavity. A mandrel is slidingly connected in the mandrel sliding cavity, an outer side end of the mandrel is provided with an obliquely disposed pipe expanding cone, an inner side end of the mandrel is provided with an elastic body accommodating cavity. Flat keys are disposed on the mandrel, and an elastic body is clamped and disposed between the flat keys and a bottom surface of the elastic body accommodating cavity.

A vehicle seat actuator includes an electric motor and a gear set that connects the drive motor to the seat and transmits the output of the motor to the vehicle seat. The drive motor and gear set are each disposed in an individual, dedicated housing component. The individual housing components are then assembled together to provide the actuator. The housing components are maintained in the assembled configuration using snap fit mechanical fasteners. Each snap-fit fastener includes a receiving portion provided on one housing component and an insertion portion provided on the other housing component. The receiving portion may be a slot formed in the gear housing that is partially obstructed by an elastic member, while insertion portion is an ear that protrudes from an outer surface of the drive motor housing and forms both a snap-fit engagement with the elastic member and a press-fit engagement with the slot.

A linear actuator (10) for use in a modular assembly of such actuators comprises an actuator body (11), a shaft (12) guided by the body to be displaceable relative thereto in the sense of tlte longitudinal axis (13) of the shaft and a drive motor enclosed in the body and operable to axially displace the shaft relative to the body in two mutually opposite directions. The body has two mutually opposite sides (15a, 15b) respectively lying in two substantial parallel spaced-apart planes, which each represent a reference plane for positioning the body side-by-side with the body of another such actuator, and a further side (17b) connecting the two mutually opposite sides and stepped to form a projection (18) receiving the shaft (12) with the axis (13) parallel to the two planes and a rebate (19) beside the projection to permit the body to interlock with the body of another such actuator at that further side. The projection (18) and rebate (19) are of substantially the same width in the sense of the spacing of the two planes and the shaft (12) is disposed substantially centrally of the projection (18) so that when the body (11) is interlocked with that of another such actuator the pitch of the shaft axes (13) is equal to that width.

A stator assembly (12) for use with a brushless geared motor assembly (10), including: two plastic parts (28, 30) located on each end of a core of the stator assembly, at least one of the plastic parts (28, 30) including several protruding parts (74) configured to fit into complementary slots of the stator core, wherein the protruding parts (74) are cut at corners (76) in order to provide flexibility to the protruding parts (74).

An electric pipe expander and intelligent control circuit for the electric pipe expander are provided. The electric pipe expander includes a pipe expander body and a mandrel sliding cavity disposed on the pipe expander body. A chuck body capable of clamping a pipe to be processed is disposed at an opening end of the mandrel sliding cavity. A mandrel is slidingly connected in the mandrel sliding cavity, an outer side end of the mandrel is provided with an obliquely disposed pipe expanding cone, an inner side end of the mandrel is provided with an elastic body accommodating cavity. Flat keys are disposed on the mandrel, and an elastic body is clamped and disposed between the flat keys and a bottom surface of the elastic body accommodating cavity.