Abstract: The invention relates to a drive unit (10), especially for adjusting mobile parts in a motor vehicle, and to a method for producing such a drive unit. The drive unit comprises a housing (12) which is provided with an opening (18), leading towards the surroundings (23), on which a gas-permeable, liquid-impermeable membrane (20) rests. The housing (12) has a first housing part (14) with a peripheral collar (26) and a second housing part (16) obturating the first housing part (14). The opening is injection-molded to the second housing part (16) with a peripheral contact surface (28) which forces the membrane (20) against the collar (26) of the first housing part (14) once the housing (12) is closed.

Abstract: An automotive alternator has slip-rings connected to a rotor shaft and a brush device covering the slip-rings. The brush device is composed of a brush holder supporting brushes therein and a slip-ring cover firmly connected to the brush holder. The slip-ring cover includes a wall curved in a U-shape and a pair of flat walls closing the axial ends of the curved wall. Openings for ventilating the brushes and the slip-rings are formed between the curved wall of the slip-ring cover and the sidewalls of the brush holder. When the brushes are positioned downward of the slip-rings, the openings are open to the downward of the slip-rings. Therefore, water is prevented from entering into the brush device through the openings.

Abstract: A motor end bell assembly includes an end bell having an opening in a face of the end bell for accessing terminals of the motor. An additional aperture in the end bell facilitates passage of a power cord through the end bell. A cover at least partially closes the opening and is formed as a single piece of material. The cover includes a tab for at least partially closing the aperture.

Abstract: A power tool includes: a stator having a substantially cylindrical yoke and a plurality of permanent magnets that are firmly fixed to an inner surface of the yoke and circumferentially spaced from each other by a first gap; a rotor inserted inside the permanent magnets at a second gap radially; an outer frame portion that accommodates the stator and the rotor; a ventilation hole formed in the outer frame portion to place the first and second gaps in communication with an atmosphere; and a dustproof member comprising a ferromagnetic material, which is mounted in contact with the stator and has a protruding portion located in a passage going from the first and second gaps to the atmosphere via the ventilation hole.

Abstract: An actuator for use with a fluid channel structure comprises: a stator assembly including stator yokes, and a coil; and a rotor assembly including a housing shaped in a circular hollow-cylinder, an output shaft inserted through the housing, a sleeve, a magnet fixedly attached to the sleeve, and a rotor case. In the actuator described above, the housing includes first and second sealing units having elasticity and disposed at the outer circumference of the circular hollow-cylinder. The first sealing unit makes elastic contact with a wall of a fluid channel of the fluid channel structure, and the rotor case has a cup-like configuration and has an open end portion thereof engaging with the circular hollow-cylinder portion of the housing and pressing on the elastic second sealing unit. Thus, hermetic structure is surely achieved.

Abstract: A two-spool bypass turbojet includes a low-pressure spool having a rear portion carrying a low-pressure turbine provided with a low-pressure rotor. The turbojet includes a support structure connected to a casing and to a rear bearing in which the rotor is mounted. The bearing can be situated in an enclosure including a liquid lubricant feed. The enclosure can be put to atmospheric pressure via an air feed pipe connected to the enclosure via a link. The turbojet further includes an electricity generator connected to the rear end of the low-pressure rotor that extends downstream from the link, which link is secured to the rotor and includes a device for guiding the liquid lubricant from the feed to the bearing.

Abstract: A moisture-proof device is provided to be used in a fan having a stator for isolating the stator from moisture. The moisture-proof device includes a first covering part for covering a circuit board of the stator of the motor, and a second covering part connected to the first covering part for covering a coil and a core of the stator of the motor, thereby isolating the stator of the motor from moisture, wherein the first covering part and the second covering part are integrally formed as a single piece, wherein the moisture-proof device is disposed in a hub of the fan.

Abstract: The present invention is to provide a water-repellent motor assembly for rotisserie and casing thereof, which comprises an inner shroud, a motor provided in the inner shroud and an outer shroud mounted around the inner shroud. A plurality of parallel bent, elongated projecting plates are projected out of an outer surface of the outer shroud. A plurality of second openings are formed on the outer shroud, correspond to the projecting plate, and are partially concealed by the projecting plates for preventing fluid from entering the outer shroud. The inner shroud comprises one or more recesses on its outer surface. A plurality of raised members are formed on an outer surface of the inner shroud and correspond to the second openings. The raised members are protruded toward the second openings and each of the raised members comprises a first opening formed on its projecting portion.

Abstract: A sliding hole is formed so that a screw portion can pass therethrough. Also, a seal member is provided at a portion, through which the screw portion placed in the sliding hole can pass and in which a sliding portion does not slide.

Abstract: A vehicular alternating current generator includes a rectifying device equipped with a battery terminal and mounted to a rear frame, an insulating member mounted around the battery terminal, and a cooling air discharge window formed in the rear frame for discharging cooling air generated by a cooling fan fixed to a rotor of the generator. The insulating member has a pan-shaped portion formed at a position for mounting of a battery cable connectable to the battery terminal, a peripheral wall extending around the pan-shaped portion, and a drain hole having a first open end formed at a position meeting with the cooling air discharge window and a second open end formed at a position at least partially meeting with the pan-shaped portion.

Abstract: A motor assembly includes a commutator having a shaft extending axially therefrom, a commutator end bracket assembly, and at least two brushes carried by the commutator end bracket assembly and in contact with the commutator. A disc is carried by the commutator for rotation therewith. The commutator includes a notch and the disc is rotatable therein.

Abstract: An automotive alternator according to the present invention includes a rotary shaft, slip rings, a brush holder, brushes, a cover, a seal member, a cooling air flow path, and a water shield. The slip rings are fixed to an end portion of the rotary shaft. The brushes are accommodated in the brush holder and so held by the brush holder as to establish sliding contacts with the slip rings to excite the automotive alternator. The cover covers the end portion of the rotary shaft, the slip rings, the brush holder, and the brushes. The seal member is interposed between the brush holder and the cover. The cooling air flow path is formed between the seal member and one of the brush holder and the cover to supply cooling air to the brushes. The water shield works to prevent water from entering into an entrance of the cooling air flow path.

Abstract: A motor assembly includes a commutator having a shaft extending axially therefrom, a commutator end bracket assembly, and at least two brushes carried by the commutator end bracket assembly and in contact with the commutator. A disc is carried by the commutator for rotation therewith. The commutator includes a notch and the disc is rotatable therein.

Abstract: To obtain a resolver in which the winding portion is prevented from breaking by corrosion caused by water.

Abstract: A stator lead retainer assembly includes a stator lead retainer body and a stator lead retainer clip. The stator lead retainer body includes at least one through-hole extending longitudinally therethrough, each through-hole configured to receive a stator lead. The stator lead retainer clip is attached to the retainer body, and includes an aperture for receiving a stator lead.

Abstract: A stator lead retainer includes a stator lead retainer body having a plurality of through-holes extending longitudinally therethrough, each through-hole configured for receiving a stator lead. The stator lead body is constructed from an elastic material and is operable to accommodate stator leads of different cross-sectional shapes and diameters.

Abstract: A single-phase motor (10) particularly for submersed pumps, characterized in that it comprises an annular capacitor (14) interposed between the pump coupling head (15) and the stator winding pack (12).

Abstract: The present invention relates to an electric motor having a high degree of protection against the ingress of foreign particles and moisture, in particular an electronically commutated external rotor DC motor, having a stator (1), having a rotor (2) and having an electronics housing (6) which extends transversely with respect to the motor shaft (3) and accommodates in its interior (4) a printed circuit board (5) having open-loop and closed-loop control electronics and commutation electronics. In this case, connection openings (6c) are located in a base (6b) of the electronics housing (6), connection elements (7), which connect the stator (1) and the printed circuit board (5) to one another, passing through the connection openings (6c), and a seal (8, 8a, 8c, 8e, 11, 12, 18, 24) seals at least the connection openings (6c) in the base (6b) of the electronics housing (6) through which the connection elements (7) pass.

Abstract: A sliding hole is formed so that a screw portion can pass therethrough. Also, a seal member is provided at a portion, through which the screw portion placed in the sliding hole can pass and in which a sliding portion does not slide.

Abstract: The invention relates to an encapsulated electrically driven compressor for a motor vehicle and has an object to prevent electrical parts for connecting an electric motor housed in a hermetically sealed housing to an outside electric control circuit from being easily contacted with liquid-phase refrigerant, which has a higher electrical conductive property than gas-phase refrigerant. According to one of features of the present invention, an encapsulated electrically driven compressor comprises a hermetically sealed housing, a compressor device for compressing refrigerant of a refrigerating cycle, an electric motor for driving the compressor device, and a connecting device having a terminal casing for covering electrical conductive terminal portions which connect the electric motor with an outside electric control circuit, wherein the compressor device, the electric motor and the connecting device are encapsulated in the hermetically sealed housing.

Abstract: A dust shield for a refrigeration condenser fan motor includes a shroud having an opening for a motor output shaft, and a hub extending from the shroud. The shroud forms an enclosure to prevent contaminants from interfering with operation of the motor. The hub includes spring members that are displaced by the output shaft as the output shaft is inserted through the dust shield and applying a force to the shaft to hold the shield in place.

Abstract: A vehicular alternator 1 is disclosed as having a stator 2 on which an armature winding 21 is wound, a rotor 3 rotatably disposed in the stator, cooling fans 32, 33 for creating cooling winds during rotation of the rotor, a front housing 41 and a rear housing 45 with which the stator and the rotor are supported and having side areas formed with cooling wind discharge windows 42, 46, and a waterproof cover 8 located over an outer peripheral sides of the housings 41, 45. The waterproof cover 8 has a plurality of ventilation apertures 81 formed at an inclined angle different from an inclined angle at which the cooling wind discharge windows are formed.

Abstract: The cooling air introducing port 24 is open to a lower portion of an axial direction end portion of the motor housing member 11, 12, the water-proof cover 25 for covering the cooling air introducing port 24 is attached to the outside of the axial direction end portion of the housing member 11, 12, and the air introducing passage 26 having a labyrinth structure is composed of the bent portion 25d provided in a lower end portion of the water-proof cover 25, the first wall face 21d provided in the annular portion 21b of the shroud and the second wall face 21e.

Abstract: A motor for a drum type washing machine is disclosed, wherein noise is reduced. To this end, the drum type washing machine is provided with a washing motor having a stator fitted at a rear surface of a tub and having a plurality of slots on which a coil is wound; a rotor provided at an outer side of the stator with a permanent magnet and connected to a washing drum inside the tub by a driving shaft; and isolating means for isolating a gap between the stator and the rotor not to be communicated with the stator and the rotor.

Abstract: A motor assembly includes a commutator having a shaft extending axially therefrom, a commutator end bracket assembly, and at least two brushes carried by the commutator end bracket assembly and in contact with the commutator. A seal is carried by either the commutator or the commutator end bracket assembly and has engaging contact with the other. The seal may be disposed on either or both sides of the commutator.

Abstract: A rotor device capable of dissipating heat and resisting foreign objects includes a hub and a shield case. The hub has a closed wall and a hub wall connecting with the closed wall and the closed wall at least has a hub hole. The shield case is mounted in the hub and has an upper wall neighboring the closed wall and a circumferential wall connecting with the upper wall. The upper wall at least has a through hole offsetting the hub hole to allow the fluid passing through the hub hole and the through hole for performing heat dissipation and preventing the foreign objects from falling into the shield case via the hub hole and the through hole.

Abstract: A compressor unit has a compressor main body, an electrical circuit device and a connector. The electrical circuit device is electrically connected to the compressor main body through a cable. The cable has a proximal end and a distal end. One of the compressor main body and the electrical circuit device is integrally connected to the cable at the proximal end of the cable, and the other has a terminal thereon. The connector is provided at the distal end of the cable and is detachably connected to the terminal.

Abstract: An electrical actuator has a DC motor which is provided with a rotor having a permanent magnet for forming a plurality of magnetic poles around a periphery thereof and a stator having a plurality of energizing coils and being disposed around a periphery of the rotor to thereby generate a rotary force for the rotor. In mounting this DC motor on a heat-generating member which generates radiant heat, a member for shielding radiant heat from a heat-generating member is disposed between the DC motor and the heat generating member. In this manner, the radiant heat from the heat-generating member is prevented from reaching the DC motor, whereby the problems in the DC motor associated with the radiant heat can be prevented.

Abstract: An electric motor includes a motor casing, a stator assembly, a rotor shaft assembly, first and second end bells, respectively, attached to each end of the motor casing, and an electrical inlet in the motor casing for supplying power to the motor. The motor further includes a first bearing assembly housed in the first end bell and a second bearing assembly housed in the second end bell. Both bearing assemblies and support the rotor shaft assembly and seal the interior of the motor casing from moisture. The motor also includes a heat-conductive solid resin that encapsulates the stator assembly.

Abstract: Powder produced by abrasion due to sliding between a brush and a commutator is prevented from moving toward a rotor. A recess is provided between the rotor and a slide face of the brush and the commutator, where powder produced by abrasion at the brush may enter into a motor and increase sliding resistance of the rotor. Thus, there is no such powder produced by abrasion entering into the motor as increasing sliding resistance of the rotor.

Abstract: An electric motor is provided with rotor and stator. The stator includes stator poles radially facing the rotor and surrounded by stator windings. An insulating sleeve is positioned between the rotor and stator. The sleeve includes projections arranged radially with respect to the rotor. The projections project in a direction away from the sleeve and rotor and towards the stator. The projections project between adjacent stator poles and may further serve to anchor the poles. The projections may have a T or elongated T shape. The projections and sleeve are rigid and either or both may be made of plastic. The sleeve provides a moisture or liquid tight insulation for the stator so that the motor can be used in moist or liquid environments.

Abstract: A motor housing for an electric motor having a housing shell which encloses a space to accommodate the electric motor, and a flexible partition in the housing shell which separates a pressure equalizing cavity from the cavity accommodating the electric motor, whereby the pressure equalizing cavity is connected to the outside environment.

Abstract: A motor assembly, such as an electro-mechanical-brake (EMB) motor assembly includes an electric motor, a latch gear, a solenoid, and a spring. The latch gear is non-rotatably attached to the drive shaft of the motor. The spring is operatively connected to the solenoid and has a spring projection which is longitudinally-deflectable by energizing the solenoid. The gear tooth is shaped to longitudinally retain the spring projection when the latch gear rotates the gear tooth into engagement with the longitudinally-deflected spring projection. In one example, the latch gear is a parking-brake latch gear and the motor assembly provides a parking brake function for an EMB electric motor which also is used for applying and releasing a vehicle's driving brakes.

Abstract: The present invention is a electronic motor control apparatus designed for use in hazardous/classified environments, such as described in Article 500, Section 500.7 of the NFPA 70/National Electrical Code. The invention comprises a third party approved (i.e., UL Listed, UL Classified, CSA Certified, FM Approved, CE Approved) explosion-proof outer shell of aluminum, an interior controller, and a plurality of conductive plates to carry heat away from the interior controller to the external shell and environment. The controller may be an inverter or a solid-state device, and may be capable of variable frequency and voltage output. Interior and/or exterior cooling devices, such as fans, may be attached or adjacent to the apparatus to assist in heat dispersal. Interior air circulating booster fans may be installed inside the apparatus to increase internal air film coefficient, thus providing a maximized heat dissipative atmosphere.

Abstract: In a vehicle ac generator, a rear cover, which is provided to cover a rectifying device, has a cover body and a protecting wall portion. The cover body forms a plurality of air intake openings through which cooling air created by rotation of a rotor is sucked in the generator. The protecting wall portion is integrally formed with the cover body. The protecting wall portion extends from an axial end surface of the cover body in an axially outward direction of a rotation shaft of the rotor, at a position higher than the air intake openings when the vehicle ac generator is mounted on a vehicle. Therefore, it is less likely that foreign materials such as water and oil will enter the inside of the rear cover from the air intake openings.

Abstract: A motor having a stator and a rotor housed in a U-shaped cylindrical case. The cylindrical case has a connector bushing fitted at one end, and an opening at the other. Located on the periphery of the opening is a cylindrical support that projects inside the cylindrical case. A ball bearing is fitted inside the cylindrical support. A shaft is inserted into the opening and one end of the shaft is supported in the bearing. The other end of the shaft is supported in another bearing, which in turn, is mounted in a bearing bushing housed in the cylindrical case. One end of the stator touches a step of the inner circumference of the case, thereby fixing the position of the stator in the axial direction. One end of the inner circumference of the stator is fitted to an outer circumference of the cylindrical support, thereby fixing its position in the radial direction. Two rotor cores are mounted on the shaft. The gap between the stator core and the rotor cores is approximately 40-50 microns.

Abstract: A vibratory motor having an elongated housing having opposite ends, an electric motor positioned within the housing between the opposite ends, bearings in the opposite ends, a motor shaft extending into the opposite ends and supported by the bearings, eccentric weight chambers in the opposite ends proximate the bearings and between the bearings and the electric motor, explosion and leak-proof seal assemblies located proximate the eccentric weight chambers and between the eccentric weight chambers and the electric motor, each of the seal assemblies including an oil seal facing an adjacent eccentric weight chamber, and a flame path between the oil seal and the electric motor.

Abstract: A holder of a vehicle blower motor device includes a holder body for holding a motor, a disk-shaped coupling member, and a cover plate. The holder body, the coupling member, and the cover plate define an air duct. Air is introduced to the interior of the holder body through the air duct form the inlet to cool the motor. A cylindrical blocking wall surrounds the inlet. The blocking wall protrudes from the lower surface of the coupling member, which faces the air duct, toward the interior of the air duct. The blocking wall prevents droplets collected on the inlet from reaching a boundary between the cover plate and the coupling member. As a result, a blower motor device having an improved water resistance.

Abstract: A fuel pump in which a terminal plate can be liquid-tightly mounted to a body upper and prevented from being dislodged from the body upper without the need of other component parts is provided. The terminal plate is formed with a cut and raised portion for preventing dislodging. When the terminal plate is inserted into a terminal plate through-hole having a step portion, a projection and a press-fit portion, the cut and raised portion is closed by being pressed with the projection and allowed to reach the step portion without contacting the press-fit portion. Then, the cut and raised portion returns to its natural configuration. Thus, the terminal plate is prevented from being dislodged to fall into the fuel pump. Because the press-fit portion is not damaged when the terminal plate is inserted, the terminal plate can be placed in liquid-tight contact with the body upper block.

Abstract: A rotating electric machine, including: a bowl-like housing having a through hole penetrated by a shaft and having a cutout portion in a part of an opening portion; a commutator fixed to the shaft; a base fixed to the housing by a clamp screw and having a tapped hole through which the clamp screw is inserted with a play; a brush disposed in the base and rubbing against the commutator; a plate having a joint portion to which a lead wire led outside is welded and fixed to the base; a grommet penetrated by the lead wire and engaged in the cutout portion of the housing; and a positioning unit which positions the lead wire to be welded in the joint portion.

Abstract: A modular electric motor. The modular motor includes a plurality of mechanically and electrically coupleable stator sections and mechanically coupleable housing sections. At least one stator section has conductors extending longitudinally therethrough for generating a magnetic field to impart rotative motion in a rotor. A given motor may be assembled to a variety of desired lengths by mechanically and electrically coupling the appropriate number of motor sections. This facilitates construction of a desired horsepower motor for a given application.

Abstract: The invention concerns an AC electric motor (1) comprising a stator magnetic circuit including a first part (2) whereon are mounted electrical windings (7 and 8) and a second recessed part (10) wherein is mounted a rotor (14). The invention is characterized in that the first part (2) of the stator magnetic circuit and the electrical windings (7 and 8) are mounted inside a stator chamber (20) with sealed wall, the second part (10) of the stator magnetic circuit, the cylindrical rotor (14) being located outside said chamber. The invention is applicable in the oil industry for pumping fluids in bottom holes producing hydrocarbons in liquid, gas or polyphase form and in chemical and nuclear industries for pumping dangerous or chemically harmful fluids.

Abstract: A percussion electrical tool including an electrical motor (6) located in a firedamp-protected housing (6), control electronics (4) for controlling operation of the electric motor (6); an inverted rectifier (5) connecting the control electronics (4) with the electric motor (6); an electronic module (9) located in the housing (3); an intermediate wall (7) for separating the electronic module (9) from a portion of a housing volume in which the electric motor (6) is located, connected with the inverted rectifier in a heat-conductive manner, and having a fluid-cooled cooling medium conduit.

Abstract: A canned motor comprising a rotor assembly having at least 6 poles, a stator assembly, and an isolating can separating the rotor assembly and stator assembly. The canned motor an L3/D4 ratio of less than 50, and first and second frictionless bearings positioned on the rotor shaft.

Abstract: A brushless DC motor includes: a motor section which has a rotor, a stator and a housing; a control circuit section which is integrated with the motor section and separated from the motor section by a partition; and a casing member which covers the control circuit section to isolate the control circuit section from the external environment. A position detection means is disposed outside of a bearing member with respect to an axial direction.

Abstract: An electric machine includes a stator with a plurality of circumferentially-spaced stator segment assemblies. A rotor rotates relative to the stator and defines an airgap between an outer diameter of the rotor and the inner diameter of the stator. Each stator segment assembly includes a stator segment core, an endcap that is attached to the stator segment core, and winding wire that is wound around the endcap and the stator segment core. The endcap provides first and second axial mating surfaces. The endcaps provide first and second circumferential surfaces on opposite axial ends thereof. First and second annular seals engage the first and second circumferential surfaces to provide circumferential seals at opposite axial ends of the stator. The annular seals, the axial seals and the circumferential seals prevent the entry of debris into the airgap.

Abstract: An anticondensation device particularly for electric motors, comprising a box-like body that contains the stator windings inside which the enclosure for a rotor is arranged hermetically, a cover to be fixed over the bottom of the box-like body, spaced therefrom, to define an interspace and a perimetric air passage gap. The bottom has through holes, and corresponding first collars protrude perimetrically to the holes toward the cover and enter with play second collars that protrude from the cover toward the bottom. An air passage pathway is formed between the first and second collars. The box-like body is arranged in functional configuration with its bottom substantially vertical.

Abstract: A projected board portion that is a part of a printed board is positioned externally to an outer diameter position of an annular stator, and can be connected to any of a connector and a lead wire even after resin scaling is performed. In a stator structure having a printed board according to the present invention, a projected board portion of a printed board provided to an insulating cover of an annular stator extends outward beyond an outer diameter position of the annular stator, and a connector or a lead wire can be freely selected and connected to the projected board portion.

Abstract: An AC generator for a vehicle has a brush unit. The brush unit comprises a brush held in sliding contact with a slip ring, a spring for pressing the brush, a brush holder having a portion for receiving the brush, and a slip ring cover for covering the outer periphery of the slip ring formed on a rotary shaft. The slip ring cover includes a first wall portion and a second wall portion which are generally shaped like an arc, a cover portion for closing the end portion in the axial direction, and a side wall portion. The first wall portion and the second wall portion overlaps each other, and a suction/discharge port is formed between these wall portions.

Abstract: A sealed actuator includes a motor stator having rotation-drive magnetic poles; a motor rotor arranged so as to confront magnetic pole surfaces of the motor stator while interposing a small distance therebetween and rotatably supported through roller bearings; and displacement detecting means for measuring displacement of the motor rotor. A partition wall made of a nonmagnetic metal is disposed in a clearance between the motor stator and the motor rotor, so that the inner space where the motor stator is disposed is hermetically covered. The bearings are disposed at both sides of the partition wall in the axial direction so that the load applied to the bearings are directly received by a housing. At least a part of the partition wall is reinforced by reinforcing members and a mold agent is charged into the space on the motor stator side.