MAXON MOTOR AG Patent applications |
Patent application number | Title | Published |
20160138638 | SCREW ASSEMBLY WITH A STEEP THREAD - The present invention relates to a screw assembly with a threaded spindle and a spindle nut. The spindle nut comprises at least one threaded portion made of sintered material with an internal thread. The internal thread engages in an external thread of the threaded spindle. It is according to the invention provided that the internal thread and the external thread are configured as steep threads. | 05-19-2016 |
20160137259 | SENSOR ARRANGEMENT FOR CONTROLLING AN AUXILIARY MOTOR AND A WHEEL HUB UNIT WITH SUCH A SENSOR ARRANGEMENT - The present invention provides a sensor arrangement. The signal from the sensor is used to control an auxiliary motor of a vehicle propelled by muscular strength. The auxiliary motor is there integrated into a wheel hub unit of the vehicle. The wheel hub unit comprises a stationary axle and a hub rotatably mounted to the axle. According to the invention, the assembly comprises the sensor and a freewheel of the drive train, which is propelled by muscular strength, mounted rotatable relative to the axle, where the sensor is arranged such that it detects a rotational motion of the freewheel relative to the axle. | 05-19-2016 |
20160126796 | ELECTRIC DIRECT CURRENT MOTOR WITH FLEXIBLE ROTOR ASSEMBLY AND METHOD FOR THE MANUFACTURE THEREOF - An electric direct current motor is disclosed which includes a shaft, a winding support, a collector having several collector wires, and an air-cored outer rotor winding with several winding terminations. The outer rotor winding is at one end connected to the shaft via the winding support in a torque-proof manner, and is electrically connected with the collector. The winding support can be replaced by a printed circuit board as a bearing component of glass-fiber reinforced thermosetting plastics, wherein the printed circuit board includes at least one layer and is connected to the shaft via a metal hub. | 05-05-2016 |
20160072415 | METHOD OF AND CONTROL FOR MONITORING AND CONTROLLING AN ELECTRIC MOTOR FOR DRIVING A PUMP - The present disclosure relates to a method of monitoring an electric motor serving to drive a pump, wherein, within a time interval T, current values are measured, an average value of the current values measured is determined and this average value is compared to a predetermined reference value. According to the disclosure, it is provided that the method extends to controlling the electric motor, wherein the current values measured reflect the profile of the winding current of the electric motor and, irrespective of whether they can be associated with an instantaneous maximum value of the current profile, are included in determining the average value, and wherein the average value is considered by the motor control as input parameter. | 03-10-2016 |
20150268283 | METHOD FOR DETERMINING THE POSITION OF A ROTOR OF A POLYPHASE MOTOR - The present disclosure relates to a method for determining the position of a rotor of a polyphase motor, e.g., the rotor angle, particularly at standstill. The method can include: applying voltage to phases of the motor, measuring a current in the phases, and determining the rotor position based on the measured current. According to the present disclosure, determination of the rotor position can be based on current values measured during a period where zero voltage is applied to the respective phases. | 09-24-2015 |
20150219149 | BEARING ASSEMBLY FOR AN ELECTRIC MOTOR WITH AN AXIALLY PRELOADED BALL BEARING - The present invention relates to a bearing assembly for an electric motor, in particular for a small electric motor. It comprises an axially preloaded ball bearing with an inner race and an outer race. The bearing assembly further comprises an axial stop, a spring element disposed between the axial stop and the inner or outer race, respectively, for generating the axial preload, and a thrust washer made of metal and disposed between the spring element and the inner or outer race. It is provided according to the invention that the thrust washer is coated on both sides with a layer increasing static friction. | 08-06-2015 |
20150198223 | BACKLASH-FREE SPINDLE NUT - A backlash-free spindle nut is disclosed with a thread that can be meshed with a spindle. The spindle nut has a first nut part with a first internal thread and a second nut part with a second internal thread that can be twisted in relation to the first nut part. To generate a preload between the first nut part and the second nut part, the spindle nut has an elastic element. The preload can be adjusted through relative twisting between the first nut part and the second nut part. The elastic element can work between the first nut part and a secure intermediate part, whereby relative twisting between the first nut part and the second nut part can be locked by locking a relative twisting position between the second nut part and the intermediate part. | 07-16-2015 |
20140342867 | ELECTRIC MOTOR/GEAR MECHANISM UNIT - The invention relates to an electric motor/gear mechanism unit including a housing, an iron-free rotor winding rotatably arranged in the interior of the housing, a collector connected to the rotor winding, a rotor shaft extending through the collector, and a gear mechanism which is connected to the rotor shaft and which has an output shaft. The present invention is so conceived that the gear mechanism is produced from a non-magnetic material and arranged in the interior of the rotor winding. | 11-20-2014 |
20140148302 | REDUCTION GEARING WITH A HIGH REDUCTION RATIO - The present invention relates to a reduction gearing with a ring gear, at least one planet gear rolling around in the ring gear and having a planet gear axis, and an output being rotatably mounted coaxially to the ring gear. According to the invention, it is provided that the planet gear comprises a guide member that is spaced apart from the planet gear axis and describes a hypocycloid relative to the ring gear when the planet gear rolls around, wherein guidance is provided between the guide member and a cam disk of the output, such that the output experiences a drive motion by the planet gear rolling around. | 05-29-2014 |
20140148301 | BACKLASH-FREE PLANETARY GEAR UNIT WITH PLANET CARRIERS PRELOADED RELATIVE TO EACH OTHER - The invention relates to a backlash-free planetary gear unit with a sun gear and with a ring gear, which mesh with at least one first planet gear of a planetary stage, wherein the planetary stage comprises a first planet carrier on which the first planet gear is rotatably mounted, wherein there is furthermore at least one second planet gear in the planetary stage that also meshes with the ring gear and the sun gear, wherein the at least one second planet gear is rotatably supported at a second planet carrier of the planetary stage, wherein the two planet carriers are in the circumferential direction of the sun gear preloaded relative to each another such that also the at least one first planet gear is preloaded relative to the at least one second planet gear in the circumferential direction of the sun gear. | 05-29-2014 |
20140147808 | DENTAL IMPLANT - Dental implant with a base body made of ceramic anchorable in a jawbone and an implant superstructure attachable to the base body using a screw, wherein in an assembled state of the dental implant, a threaded portion of the screw engages with an inner thread formed in a blind hole of the base body, wherein the implant superstructure is by the screw pressed against the base body and wherein the engagement between the threaded portion of the screw and the internal thread of the blind hole occurs only in a lower half of the base body facing away from the implant superstructure. | 05-29-2014 |
20140137679 | LINEAR DRIVE - The present invention relates to a linear drive with a stator, a runner, and two rotative drive units provided for driving the runner. It is provided according to the invention that the linear drive comprises two magnetorheological clutches, wherein the first drive unit can be coupled to the runner using a first magnetorheological clutch and the second drive unit can be coupled to the runner using a second magnetorheological clutch. The output torque of the first drive unit acts upon the runner in the opposite direction to the output torque of the second drive unit. | 05-22-2014 |
20130270941 | ELECTRIC DIRECT-CURRENT MOTOR WITH FLEXIBLE ROTOR ASSEMBLY AND METHOD FOR THE MANUFACTURE THEREOF - An electric direct current motor is disclosed which includes a shaft, a winding support, a collector having several collector wires, and an air-cored outer rotor winding with several winding terminations. The outer rotor winding is at one end connected to the shaft via the winding support in a torque-proof manner, and is electrically connected with the collector. The winding support can be replaced by a printed circuit board as a bearing component of glass-fiber reinforced thermosetting plastics, wherein the printed circuit board includes at least one layer and is connected to the shaft via a metal hub. | 10-17-2013 |
20130249344 | HOLLOW-CYLINDRICAL CORELESS WINDING - Exemplary embodiments relate to a hollow-cylindrical coreless winding for an electric motor. The winding includes a plurality of single coils which are distributed across the circumference of the winding, wherein each single coil includes a plurality of turns which are spirally wound around a winding axis which is perpendicular to an axis of the winding. Successive single coils overlap in a roof tile manner. The winding includes at least two phase windings, each of the phase windings consisting of several ones of the single coils. The phase windings are offset with respect to each other in the circumferential direction of the hollow-cylindrical winding, so that the single coils of a first phase winding are disposed in the circumferential direction of the hollow-cylindrical winding between the single coils of a second phase winding. Each of the phase windings is wound from a continuous wire. | 09-26-2013 |
20130140941 | BRUSH COVER FOR A BRUSH-COMMUTATED ELECTRIC MOTOR AND ELECTRIC MOTOR - The present invention relates to a brush cover for a brush-commutated electric motor. The brush cover comprises at least one lever brush which is mounted rotatably about an axis at the brush cover by means of a bolt. According to the invention, the bolt is surrounded, at least in sections, by at least one damping sleeve of an elastomer. | 06-06-2013 |
20130134809 | ELECTRIC MOTOR FOR HIGH-TEMPERATURE APPLICATIONS - The invention relates to an electric motor for high-temperature applications. The electric motor comprises a rotor and a stator with a hollow-cylindrical, ironless stator winding of stoved-enamel wire. Furthermore, a soft-magnetic return is provided which encloses the stator winding. According to the invention, it is provided that the stator winding is supported by a hollow-cylindrical supporting sleeve lying radially inside against the stator winding | 05-30-2013 |
20130098187 | POWER TRANSMISSION UNIT FOR AN ELECTROMOTIVELY OPERATED DRIVE AND MAGNETO-RHEOLOGICAL CLUTCH - A power transmission unit is disclosed which includes a first input shaft and a second input shaft which can be mutually driven by a motor shaft in opposite directions. A driven shaft can be coupled, depending on the desired sense of rotation of the driven shaft, to the first or to the second input shaft, and can engage with a first output shaft and with a second output shaft. The first output shaft can be directly coupled with the first input shaft via a first magneto-rheological clutch, and the second output shaft can be directly coupled with the second input shaft via a second magneto-rheological clutch. A magneto-rheological clutch is disclosed with a coil powered by wireless energy transmission between a sender connected to a stationary housing and a receiver rotating with the coil. | 04-25-2013 |
20130084125 | CONNECTION BETWEEN A SHAFT AND A HUB COMPONENT AND METHOD OF PREPARING THE CONNECTION - The present invention relates to a method of connecting a hub component, in particular a pinion, to a shaft. The hub component and the shaft consist of different materials, that is of ceramics and metal. A connecting element of metal is connected both to the hub component and to the shaft. According to the invention, it is provided that the hub component and the shaft are connected to the connecting element by a material bond. The invention furthermore provides a connection between a shaft and a hub component. | 04-04-2013 |
20120293025 | ELECTRIC MOTOR WITH ADD-ON UNIT, AS WELL AS A METHOD FOR CONNECTING AN ELECTRIC MOTOR AND AN ADD-ON UNIT - An electric motor with an add-on unit, such as a gearbox unit, encoder unit or controller unit, and disclosed whereby the electric motor and add-on unit can be firmly connected to each other. For a firm connection, a shrink ring is thermally shrunk on to the electric motor and add-on unit in the area of the joint so that the shrink ring covers the joint. A method is also disclosed for producing the connection, wherein a temperature difference is first created between the shrink ring on the one hand and the electric motor as well as add-on unit on the other hand, whereby furthermore the temperature of the shrink ring is greater than the temperature of the electric motor and add-on unit and whereby the components are then joined together and held so that the shrink ring shrinks on to the electric motor and add-on unit. | 11-22-2012 |
20120243817 | SPRING WASHER AND A BEARING BLOCK INCLUDING A SPRING WASHER - A spring washer is disclosed for axially preloading anti-friction bearings. The spring washer can include an outer ring and an inner ring that is coaxially arranged with respect to the outer ring. An axis is defined by the two rings. Outer and inner rings are connected through several resilient connection rods. Resilient cantilevered rods can be provided which extend from one of the rings in between the connection rods and which have a free end at the opposite positioned ring. Thereby, the cantilevered rods can be axially bent up such that the free end has an axial offset. | 09-27-2012 |
20120013209 | SMALL ELECTRIC MOTOR AND METHOD FOR PRODUCING A SMALL ELECTRIC MOTOR - A small electric motor is disclosed, such as a claw pole motor. An exemplary small electric motor includes a housing, a stator having at least two stator windings, a rotor having a rotational axis, and a flexible conductor foil for the electrical connection of the stator windings. The conductor foil includes winding connection contacts, external connection contacts and conductor paths between the winding connection contacts and the external connection contacts. Taps of the stator windings are electrically contacted with the winding connection contacts of the conductor foil. The conductor foil can be configured as an elongated strip having at least two connection portions which are arranged in spaced-apart relationship with each other and include winding connection contacts. | 01-19-2012 |
20110304234 | SMALL ELECTRIC MOTOR - In a small electric motor having a stator and a rotor which includes a solid-cylindrical permanent magnet and at least one shaft element mounted on a face of the permanent magnet and bonded thereto by adhesive, the shaft element has at least one recess on its face facing the permanent magnet. The adhesive is introduced into the recess and contacting the face of the permanent magnet in the area of the recess. | 12-15-2011 |
20110298322 | ELECTRIC MOTOR/GEAR MECHANISM UNIT - The invention relates to an electric motor/gear mechanism unit including a housing, an iron-free rotor winding rotatably arranged in the interior of the housing, a collector connected to the rotor winding, a rotor shaft extending through the collector, and a gear mechanism which is connected to the rotor shaft and which has an output shaft. The present invention is so conceived that the gear mechanism is produced from a non-magnetic material and arranged in the interior of the rotor winding. | 12-08-2011 |
20110296698 | KIT FOR AN ELECTRIC MOTOR HAVING A ROTARY ENCODER - The present invention relates to a kit for an electric motor having a rotary encoder for determining the position of the motor shaft of the electric motor. A kit is proposed by which simple and precise positioning of a sensor of the rotary encoder on the electric motor, good protection of the sensor, and simple assembly are possible. To this end, the invention proposes that the kit includes an electric motor and a rotary encoder having a solid measure and having a sensor having sensor electronics, wherein the solid measure of the rotary encoder can be applied to a motor shaft at a reverse end face of the electric motor and protruding therefrom, the sensor of the rotary encoder is embedded with the sensor electronics in a plastic disc, a motor-side mounting element is disposed at the reverse end face of the electric motor, and the plastic disc comprises a sensor-side mounting element designed to be complementary to the motor-side mounting element. | 12-08-2011 |
20110175462 | LINEAR DRIVE - The present invention relates to an electric linear drive, particularly for a rotary-lifting motor. Such a linear drive includes a winding system including a plurality of wound coils which are arranged to be coaxial to each other and successive in axial direction, and a magnet system which is movable in axial direction relative to the winding system and includes a plurality of axially successive permanent magnets. The winding system is normally fed by a controlled converter. The coils of the winding system and the permanent magnets of the magnet system define an air gap thereinbetween. Furthermore, a sensor is provided for detecting the relative movement of winding system and magnet system and for detecting the relative position of the two systems, the sensor being used for scanning a timing ruler mounted on the outer circumference of the magnet system. The magnet system is radially arranged in the interior of the winding system, and the timing ruler circumferentially extends only over a portion of the circumference of the magnet system. According to the invention it is either provided that the coils of the winding system have a radial bulge for the timing ruler, or that the magnet system is eccentrically arranged relative to the winding system, or that the magnet system includes a radial bulge in the form of a flat portion for the timing ruler. | 07-21-2011 |
20110169362 | CONNECTION MODULE FOR DC MOTORS - A DC motor is disclosed which includes a motor housing and at least one connection module adapted to be installed on the motor housing. The DC motor can be compact, flexibly adaptable to customer requirements and also easily installable in the case of a confined installation space. For this purpose, the motor housing can include a front-sided centering elevation or centering recess which cooperates with a centering recess or a centering elevation on the connection module. The connection module can be freely rotatable in a mounting state on the motor housing, and non-rotatably connected to the motor housing in the mounted state. | 07-14-2011 |
20110138604 | METHOD OF ESTABLISHING A PRESS FIT OF A COMPONENT ON A SHAFT - The present invention relates to a method of establishing a press fit of a component with a mounting hole on a shaft. It aims at providing a method that allows exact positioning of the component to be mounted on the shaft as well as a flexible way of use. To this end, the method is so conceived that an inner surface of the mounting hole of the component and/or a circumferential surface of the shaft is/are partially fused so that calotte-shaped projections protruding beyond the inner surface of the mounting hole and/or the circumferential surface of the shaft will form, that the component and/or the shaft is/are subsequently cooled, so that the calotte-shaped projections will solidify, and that the component is then slipped onto the shaft until the mounting hole is positioned in a fastening area of the shaft. In addition, the present invention also relates to components for establishing a press fit of a shaft-hub connection. | 06-16-2011 |
20100284769 | FEEDER DEVICE FOR INSERTION MACHINES OF PRINTED CIRCUIT BOARDS - A feeder device is disclosed for insertion machines for printed circuit boards, including a housing, a drive motor, a gear unit and a pin wheel engaging with a transport tape. The drive motor and the gear unit are arranged on a common side wall of the housing such that the axles thereof are perpendicular to the side wall. A narrow structural design of the feeder device can be provided, which also allows easy mounting. To this end, the rotor of the drive motor is rotatably mounted on only one axle which is fixedly connected to the side wall of the housing. | 11-11-2010 |
20100240490 | BACKLASH-FREE PLANETARY GEAR UNIT WITH SPLIT PLANET GEARS, WHICH ARE PRELOADED BY SPRING BARS ARRANGED PARALLEL TO THE PLANETARY AXIS OF ROTATION - The invention relates to a backlash-free planetary gear unit comprising a sun gear, an internal gear and at least one planet gear which is in mesh with said sun gear and said internal gear and which is arranged on a planet carrier such that it is rotatable about a planetary axis of rotation, wherein the toothed planet gear has a plane of division which is oriented perpendicular to the planetary axis of rotation and by means of which the planet gear is divided into a first planet subgear and a second planet subgear, wherein the first planet subgear is preloaded relative to the second planet subgear by a spring bar arranged in these two planet subgears substantially parallel to the planetary axis of rotation, and wherein a plurality of spring bars is arranged around the planetary axis of rotation. | 09-23-2010 |
20100079154 | CAPACITIVE ANGLE ENCODER AND WITHDRAWABLE FEEDER FOR CIRCUIT BOARD COMPONENT INSERTION MACHINES - The invention relates to a capacitive angle encoder for detecting a rotational position of a rotatable object relative to a stationary object as well as a withdrawable feeder for circuit board component insertion machines, said withdrawable feeder being equipped with an angle encoder according to the invention. The angle encoder comprises a stator that supports first and second transmitting electrodes and first and second receiving electrodes, and a rotor which supports an incremental coupling electrode and an absolute value-coupling electrode. The incremental coupling electrode is designed such that the first electrostatic field is modulated by a change in capacitance in response to a change in the rotational position of the rotor, while the absolute value-coupling electrode is designed such that the second electrostatic field is modulated by a change in capacitance in response to an absolute rotational position of the rotor. A signal processing circuit detects the first and second modulated electrostatic field and determines a measured value for the position in response to the detected field. The at least one first and second transmitting electrode and the at least one first and second receiving electrode are coplanar to one another. | 04-01-2010 |