1358results about "Association with grounding devices" patented technology

The invention relates to the technical field of electric corrosion prevention of motors, and discloses an electric corrosion prevention mechanism of a motor bearing, which comprises a motor, the motor is provided with a shell and a bottom cover which are matched with each other, a first bearing cover is fixed on the outer side of the shell, and a second bearing cover is integrally formed on the outer side of the bottom cover. Matched bearings are limited in the first bearing cover and the second bearing cover; a conduction mechanism is arranged between the shell and the bottom cover and is used for reducing the risk that the bearing matched with the bearing is electrically corroded; the outer sides of the two matching bearings are provided with conduction matching parts, and the conduction matching parts are internally provided with lubricating oil. Lubricating oil at the lower end of the rectangular block enters the annular groove to be in contact with the matched bearing through rotation of the rotating shaft, current is prevented from passing through a bearing raceway, and shaft voltage is prevented from puncturing a lubricating film to cause discharge; the motor vibrates to replace the lubricating oil in the annular groove, so that a continuously updated lubricating film is formed on the surface of the rotating element, and the insulation performance is prevented from being reduced.

The invention discloses an electrocorrosion protection device for a motor bearing and a motor comprising the electrocorrosion protection device, and the electrocorrosion protection device comprises an annular or fan-annular PCB substrate which is divided into a radial inner edge region, a radial outer edge region and a middle region between the radial inner edge region and the radial outer edge region; conductive fiber bundles are fixed in the tubular conductive components; a plurality of substrate conductive contacts located in the radial outer edge area and configured to be electrically connected to a housing or a ground terminal of the motor; the substrate conduction circuit is arranged on the surface of the first main body and allows the voltage at the exposed end of the conductive fiber bundle to be released to a shell or a grounding end of the motor through the substrate conduction circuit and the substrate conductive contact; the specific function component is arranged in the middle area or in the gap area between the tubular conductive components in the radial inner edge area. According to the invention, the requirements of miniaturization design of the servo motor, operation monitoring of the servo motor, bearing protection and the like can be met.

A system can include an axial field rotary energy device with an axis of rotation and a rotor coaxial with the axis and having a shaft, bearings, rotor disks that are coaxial and permanent magnets on each rotor disk. A printed circuit board (PCB) stator is located between the rotor disks to define an air gap on each side of the PCB stator. An enclosure has two enclosure sections with an inspection port. Bearing caps and bearings are mounted to the rotor. A variable frequency drive (VFD) assembly is coupled to the axial field rotary energy device. The VFD has a flexible conduit that extends between the VFD housing and the axial field rotary energy device. The flexible conduit can adapt to different sizes of axial field rotary energy devices.

The invention relates to the technical field of explosion-proof permanent magnet motors, and discloses a low-voltage explosion-proof dust explosion-proof permanent magnet motor which comprises an explosion-proof shell, a front end cover and a rear end cover, the front end cover and the rear end cover are arranged on the two sides of the explosion-proof shell respectively, and the front end cover and the rear end cover are both attached to the explosion-proof shell. And a dustproof heat dissipation mechanism is arranged on the rear end cover. Through the design of a dustproof heat dissipation mechanism, a connecting rod drives fan blades and a U-shaped plate to rotate, after the fan blades rotate, external airflow is sucked from an air inlet hole to achieve the purpose of air cooling, before the airflow enters, a filter screen filters dust, a cleaning layer cleans away dust on the filter screen when passing through the filter screen, and when passing through a scraper blade, the dust on the filter screen is cleaned away by the cleaning layer; the scraper blade scrapes off dust on the cleaning layer, air-cooled gas is finally discharged through the exhaust hopper, the scraped-off dust can be quickly blown away, the situation that dust explosion is possibly caused by dust gathering is avoided, the application range is wider, and safety is higher.

A sealing device includes an annular reinforcing ring fixed to a housing, an annular elastic member that includes a fixing portion fixed to the reinforcing ring, and a lip that protrudes from the fixed portion and is in slidable contact with an outer peripheral surface of a shaft, and at least one annular spring that presses the lip against the outer peripheral surface of the shaft, the lip being between the at least one spring and the outer peripheral surface of the shaft. The elastic member is made of an electrically conductive elastic material. A contact surface, which is a part of the lip and is in contact with the outer peripheral surface of the shaft, is straight when viewed in a cross section defined by a plane that includes a central axis of the elastic member. A width of the at least one annular spring is greater than its thickness.

In one aspect, an in-wheel drive assembly is provided that includes a stator configured to form a non-rotatable connection with a spindle of a vehicle and be positioned outboard of the spindle. The in-wheel drive assembly includes a stator retainer configured to extend in an interior of the spindle and inhibit movement of the stator in an outboard direction relative to the spindle. The in-wheel drive assembly further includes a rotor rotatably supported by the stator, an output housing to be connected to a wheel hub, and a planetary gear assembly operatively connecting the rotor and the output housing. The planetary gear assembly is configured to cause rotation of the output housing and wheel hub connected thereto in response to rotation of the rotor.

A motor device includes a motor and a motor control device. The motor control device includes a board attached to an end portion of the motor, and a cover that covers the board. The motor has a motor body and a connector assembly. The board has an extending portion that overlays the connector assembly. The extending portion has terminal connecting portions to which terminals, held by the connector assembly, are connected. The cover has a first projecting portion that projects from an inner face of the end wall thereof toward the board. The first projecting portion comes into contact with a region of the board adjacent to the terminal connecting portions before the terminal comes into contact with the end wall of the cover, when the end wall of the cover is deflected in a direction closer the board.

A position sensor of a motor includes: a housing in which a hollow is formed and an accommodation space is formed as surrounding the hollow; a ground ring formed through an inner circumferential surface of the housing; a first PCB installed in the accommodation space and formed with a first circuit part; an induction unit facing the first PCB and rotates; a connecting bushing embedded in the housing and electrically connected to the ground by a fastening member; and a relay unit installed in the accommodation space and relaying the ground ring and the connection bushing. The ground ring is formed with a body formed through the inner circumferential surface, a contact part formed on one side of the body and disposed of in the hollow, and a first connection part extending from the other side of the body and contacting the relay unit.

A dynamo-electric rotary machine includes a rotor defining an axis, a stator, and a can designed for arrangement in an air gap between the rotor and the stator in order to seal the stator and the rotor in relation to each other. The can has at least one section of average electrical conductivity in a range from 1 S / m to 10000 S / m in an axial and / or a tangential direction. The can is electrically conductively incorporated in an earthing system of the dynamo-electric machine.

The invention provides a conductive structure which can save space and can restrain reduction of conductive performance in a use state. A conductive structure (1) is provided with a holding member (2) that is a conductive member that is annular about an axis (x), and a conductive member (3) that is an annular member about the axis (x). The electrically conductive component (3) has at least one radially extending gap (10) and at least one electrically conductive body (20) extending about an axis (x). The conductive member (3) is held by the holding member (2). The conductor (20) has a pair of end portions (20a, 20b) in the direction around the axis (x). The gap (10) is connected to the ends (20a, 20b) of the conductor (20).

The invention discloses a grounding device for a driving shaft of a motor. The grounding device comprises a motor shell and the driving shaft, the rubber pad is arranged at the top of the motor shell; the grounding assembly is arranged at the top of the rubber pad and comprises a conductive part, a pressurizing part is arranged in the conductive part, a second dismounting part is arranged in the conductive part, when the driving shaft rotates, the conductive outer ring and the conductive inner ring are driven to rotate, and the conductive block is limited by the L-shaped conductive plate and the conductive rod and cannot rotate; a conductive block is in contact with a conductive inner ring to form closing of a conductive circuit, meanwhile, a first spring pulls a conductive piece leftwards, and then a conductive rod and an L-shaped conductive plate are pulled, so that the conductive block makes contact with the inner wall of the conductive inner ring all the time, and even if abrasion is generated between the conductive block and the conductive inner ring, the conductive circuit is closed. And the conductive block can still move in a first spring pulling mode, and it is guaranteed that the conductive block makes contact with the inner wall of the conductive inner ring all the time.

An electric machine comprises a stator, a rotor, an air gap between the stator and rotor (spacing them apart), and a shielding structure to reduce capacitive coupling between the stator and rotor. The shielding structure is coupled to a reference potential. Located within the air gap, the shielding structure comprises multiple conductors. Each conductor has a first section, the longitudinal extents of which extend transversely to the magnetic flux direction of the electric machine. Each conductor also has a second section, the longitudinal extents of which extend in a comb-like or meandering pattern, interlocked transversely to the magnetic flux direction and in a direction different from the longitudinal extents of the first sections.

The invention relates to a combined conducting ring and a use method thereof.The conducting ring is mainly composed of an upper conducting strip, a lower conducting strip and a middle supporting spring, in the installation process, the conducting ring is assembled in a corresponding groove position in a motor shaft, after installation is completed, due to the effect of the supporting spring, the inner peripheries of the upper conducting strip and the lower conducting strip are opened, and the inner peripheries of the upper conducting strip and the lower conducting strip are sealed. Therefore, the side face of the conducting strip is tightly attached to the motor shaft, the periphery of the conducting strip is tightly contacted with the shell, and a stable conducting path is formed between the motor shaft and the shell. According to the motor, bearing voltage is formed on the inner ring and the outer ring of a bearing due to the existence of common-mode voltage, in addition, common-mode current generated by the common-mode voltage also flows through the motor bearing, so that the problems of electric discharge, pits, spots and the like of the bearing are caused at the motor bearing, and an effective solution is provided aiming at the conditions. Through the combined conducting ring, the bearing voltage can be effectively conducted to the shell, so that the bearing electrocorrosion is avoided, and the normal operation and the service life of the motor are ensured.

Provided is a conductive ring capable of suppressing a decrease in the tightening force with respect to the shaft. 【Solution means】 The conductive ring 1 includes an annular conductive holding member 10, a conductive member 20 having conductivity extending around the axis x, and a spring member 30 having conductivity extending around the axis x. The conductive member 20 has a plurality of conductive pieces 21 arranged in the circumferential direction at the inner peripheral end portion 20a. The spring member 30 has a plurality of spring pieces 31 arranged in the circumferential direction at the inner peripheral end portion 30a. Each of the plurality of spring pieces 31 of the spring member 30 is elastically deformable along the axis x and contacts the plurality of conductive pieces 21 of the conductive member 20. The holding member 10 holds the conductive member 20 and the spring member 30 side by side in the axis x direction.

The objective of the present disclosure is to realize downsizing of the bus-bar holder, and then to downsize an electric rotating machine apparatus and an electric power steering apparatus. In a first protruding portion of the bus-bar holder, there are provided a columnar portion, two or more first ribs that are provided on an outer circumferential surface of the columnar portion in such a way as to be parallel with a center axis of the columnar portion and in such a way as to be spaced apart from one another, and two or more second ribs; the first rib makes contact with an inner circumference surface of a first through hole of the control circuit board; the second rib makes contact with an inner circumference surface of a second through hole of the bus bar.

The utility model relates to a shaft grounding ring convenient to install, which comprises an annular shell, an upper support plate, a lower support plate and a conductive fiber bundle, one end of the conductive fiber bundle is provided with an installation piece, the lower support plate is provided with at least two grooves, the installation piece is arranged in the grooves, the upper support plate is arranged on the upper side of the lower support plate, and the lower support plate is arranged on the lower side of the annular shell. The upper supporting plate and the lower supporting plate are both arranged in the annular shell, the annular shell is provided with a fixing part protruding inwards, and the fixing part abuts against the upper supporting plate. The problems that an existing carbon fiber grounding ring is inconvenient to install and not firm in structure are solved.

The invention provides a dual-motor power assembly capable of preventing electric corrosion of bearings and an electric vehicle. The power assembly comprises two driving motors which are arranged adjacently. A shell of the power assembly comprises a middle partition plate, and each of two opposite end faces of the middle partition plate comprises a bearing groove and an oil guide structure. And each bearing groove is used for fixing a motor shaft of a driving motor through a motor bearing. The two ends of each oil guide structure are used for being fixedly connected with the groove bottom of one bearing groove and extending into a shaft hole of one motor shaft in the axial direction of the power assembly to convey cooling liquid or lubricating oil correspondingly. And a gap is formed between the outer peripheral surface of each oil guide structure and the inner peripheral surface of the shaft hole of one motor shaft and is used for accommodating one annular conductive structure. And each conductive structure is used for electrically connecting one motor shaft and one oil guide structure. According to the power assembly, the shaft current is conducted to the shell to be grounded through the structure that the middle partition plate supplies oil to the shaft holes of the motor shafts on the two sides so that the motor bearings can be protected.

The utility model provides a discharging device for a motor output shaft, and the device mainly comprises a conductive coupling assembly which is electrically connected with the output shaft; the conveying unit is provided with an input end and an output end, the input end is used for receiving the current collected by the conductive coupling assembly, and the output end exports the current received by the conveying unit in a grounding mode; wherein the conductive coupling assembly is composed of a connecting handle and a chuck part, the connecting handle is electrically connected with the input end, and the chuck part can be connected with the output shaft in a clamping mode; by adopting the above structure, a conductive coupling structure formed by an existing discharging device and a motor output shaft in a lap joint mode can be avoided, the technical problem that the reliability risk exists in an electric coupling structure on the discharging device is solved, and the problems of increased contact resistance and poor contact caused by abrasion and aging of an electric brush or a carbon brush are avoided; the discharging efficiency and the reliability of shaft current management are improved, direct mechanical abrasion to the output shaft of the motor in the shaft current discharging process is effectively reduced, and the service life of the motor and related parts is prolonged.

An electrically conductive assembly prevents current flow through the raceways of a bearing rotatably coupling a shaft with an outer member, such that the shaft or outer member is rotatable about a central axis, the outer member having an exterior mounting surface spaced radially outwardly from the bore. The conductive assembly includes an annular base plate formed of a conductive material and having a main body entirely encircling the centerline and two or more integral mounting lugs extending radially outwardly from the main body and connectable with the mounting surface of the outer member to secure the conductive assembly to the outer member. An annular inner conductor is connected with the base plate and has an inner radial end engageable with the shaft such that an electrically conductive path extends between the shaft and the outer member through the inner conductor and the base plate.

A power supply system can include an electrical power source and a power converter connectable to a load. The electrical power source can provide a first DC voltage with a first potential difference (VH) between a first DC potential output and a second DC potential output, and a third DC potential output having a potential between the potential at the first DC potential output and the potential at the second DC potential output. The power converter can provide a second voltage with a second potential difference (VL) between a first potential output (V+) and a second potential output (V−). The second potential difference (VL) can be less than the first potential difference (VH). The power converter can electrically isolate the first DC voltage from the second voltage, and the second potential output (V−) can be connected to the third DC potential output using a first connection including an impedance.

The utility model relates to a motor and electric equipment, the motor comprises a motor shaft and a protection ring, the protection ring comprises a ring body and a plurality of conductive fiber bundles, the plurality of conductive fiber bundles are fixed in the ring body, the plurality of conductive fiber bundles are arranged at intervals along the circumferential direction of the ring body, and the same end of each conductive fiber bundle extends out of the ring body so as to be suitable for being in contact with the motor shaft; in the radial direction of the ring body, the length L of each conductive fiber bundle extending out of the ring body ranges from 1.5 mm to 3 mm, and the width W of the gap between the ring body and the motor shaft meets the condition that W is larger than or equal to 0.7 L-0. 1 mm and smaller than or equal to 0.8 L + 0.05 mm. The working performance and the service life of the motor can be improved.

A motor system includes: a stator connected to a case of a motor; main bearings connected to the case; a main shaft rotating on the main bearings; a rotor mounted on the main shaft and rotating relative to the stator; and at least one of a magnetic flux reducing circuit element and a conductive rolling-element device disposed inward of the main bearings and closer to the stator and the rotor than the main bearings and reducing flow of bearing current through the main bearings.

A contact unit (1) is provided for contacting a shaft (2) of an electric machine (10) having a housing (3). The contact unit (1) comprises an elongated, metallic or non-metallic base body (5) having a bore (7) and designed for insertion into a holder (4) of the housing (3), wherein the longitudinal axis (A5) of the base body (5) coincides with the central axis of the bore (7). A conductor strip (6) is drawn through the bore (7) such that contact sections (8, 9, 11), namely at least one housing-side contact section (8, 9) and one shaft-side contact section (11), are formed by the conductor strip (6) on both sides of the bore (7), which project beyond the base body (5) in its longitudinal direction.

An electric motor including a motor casing, a shaft having an axis of rotation, a first end and a second end, a first main bearing for rotatably supporting the shaft at the first end within the motor casing, a second main bearing for rotatably supporting the shaft at the second end within the motor casing, and a grounding bearing for conducting a bearing current between the shaft and the motor casing.

An electrically conductive assembly prevents current flow through the raceways of a bearing and includes a conductive base plate having a centerline and including an annular main body with an inner and outer radial ends. One or more mounting lugs extend radially outwardly from the outer radial end of the main body and are connectable with the exterior surface of an outer member to secure the conductive assembly to the outer member at a position spaced axially from the bearing. The main body may be flat and include one or more stiffening flanges extending axially from and at least partially circumferentially about the inner perimeter of the main body and / or the outer perimeter of the main body and / or the outer perimeter of the mounting lugs. Alternatively, the main body is formed as a circular hub having a bore for receiving the conductor and each mounting lug includes two stiffening ribs.

The invention relates to a shaft grounding device (1) for dissipating an electrical charge and / or voltage from a shaft (4), in particular for a drive train (2) of an electrically operated motor vehicle (3), comprising a rotatably mounted shaft (4) into which a cavity (7) extends axially from an end face (6) having a shaft opening (5), and a first, rotationally fixed and electrically conductive sleeve (8) passes through the shaft opening (5) and extends axially into the cavity (7) of the shaft (4), wherein an electrically conductive retaining element (9) is mounted in or on a receptacle (50) of the rotatable shaft (4) in the cavity (7), from which an electrically conductive centering means (10) extends coaxially into the sleeve (8) in the axial direction or surrounds the sleeve (8) from the outside.wherein an electrically conductive bearing (12) is arranged in the axial overlap area (11) of the retaining element (9) and the receptacle (50), so that during operation of the shaft grounding (1) an electrical contact is established between the receptacle (50) and the retaining element (9).

The invention discloses a motor, a water pump and a vehicle, a stator assembly comprises a stator iron core, an insulation framework and a coil winding, the insulation framework is arranged on the stator iron core, and the coil winding is wound on the insulation framework; the plurality of connector terminals are arranged on the end face of the insulating framework in the axial direction of the stator core, each connector terminal is provided with an external connecting end, at least part of the connector terminals are wiring terminals, and the wiring terminals are electrically connected with the coil winding; the casing comprises a first part and a second part which are integrally formed, the first part wraps the stator assembly, the second part wraps the plurality of connector terminals and defines a plug-in groove, and the external connecting end is located in the plug-in groove. According to the motor provided by the invention, the coil winding can be directly and electrically connected with the external application end through the wiring terminal, so that the structure of the motor is simpler, the shell of the stator assembly and the shell of the connector are integrally formed, the assembly procedures of the motor are reduced, the assembly cost is reduced, and the production efficiency is improved.

Provided is a conductive ring capable of suppressing a decrease in the tightening force with respect to the shaft. 【Solution means】The conductive ring forms a conductive path between a rotating shaft and a hole through which the shaft is inserted. The conductive ring 1 includes an annular holding member 10 having conductivity around the axis x, a conductive member 20 having conductivity extending around the axis x, and a spring member 30 extending around the axis x. The conductive member 20 is adapted to contact the shaft and the hole, and in cooperation with the spring member 30, generates a tightening force with respect to the shaft. When the sliding distance D of the shaft with respect to the conductive member 20 reaches a predetermined required sliding distance D1, the impedance Z between the shaft and the hole of the conductive member 20 becomes an impedance Z1 of a predetermined value.

To provide a conductive ring that can suppress a decrease in the tightening force with respect to the shaft. 【Solution means】The conductive ring 1 includes a holding member 10 having annular conductivity around the axis x, a conductive member 20 having conductivity extending around the axis x, and a spring member 30 extending around the axis x. The conductive member 20 is adapted to contact the shaft, and in cooperation with the spring member 30, generates a tightening force with respect to the shaft. When the sliding distance D of the shaft with respect to the conductive member 20 reaches a predetermined required sliding distance D1, the contact tightening margin δ becomes a tightening margin δ1 of a predetermined value.

The invention relates to a shaft grounding device (1) for dissipating an electrical charge and / or voltage from a shaft (4), in particular for a drive train (2) of an electrically powered motor vehicle (3), comprising a rotatably mounted shaft (4) into which a cavity (7) extends axially from an end face (6) having a shaft opening (5), and a first, rotationally fixed and electrically conductive sleeve (8) passes through the shaft opening (5) and extends axially into the cavity (7) of the shaft (4), wherein an electrically conductive retaining element (9) is rotationally fixed to or in a receptacle (50) of the rotatable shaft (4) in the cavity (7).wherein an electrically conductive centering means (10) extends coaxially into the sleeve (8) from the retaining element (9) in the axial direction or surrounds the sleeve (8) from the radial outside and an electrically conductive bearing (12) is arranged in the axial overlap area (11) of the retaining element (9) and the receptacle (50), so that an electrical contact is established between the sleeve (8) and the centering means (10) during operation of the shaft grounding (1).