718results about "Association with grounding devices" patented technology

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 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 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.

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 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.

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 for deriving an inductively generated voltage, current or charge from a first machine element (5), preferably a shaft, into a second machine element (1), having a shaft grounding element (4, 50) for discharging, according to the invention, the shaft grounding element (4, 50) is a component separated from a starting material, preferably a continuous article, said component being penetrated by channels (16) in the longitudinal direction thereof or being provided with perforations and / or surface structures and / or surface textures at least on the contact surface thereof with the first machine element. The invention also relates to a method for manufacturing the shaft grounding device.

Common mode voltage discharge shields are disposed over end turns of stator windings for a three phase electric traction motor within an electric vehicle. The common mode voltage discharge shields are capacitively coupled to the end turns to a ground strap, providing a low impedance path for common mode voltages accumulating at a neutral for electric traction motor as a result of high frequency switching of the motor drive voltage to produce desired torque. An insulating layer separates the common mode voltage discharge shields from the end turns. Accumulation of the common mode voltage in excess of a bearing breakdown voltage, and the associated potential for discharge through bearings between the stator and rotor and electrical discharge machining, is reduced or eliminated.

The invention relates to a driving motor bearing sealing structure and a vehicle, the driving motor bearing sealing structure comprises a shell, a first labyrinth ring and a second labyrinth ring, a stator and a rotor are arranged in the shell, the stator is fixed in the shell, a rotating shaft is inserted in the rotor, a non-driving end of the rotating shaft is axially sleeved with a bearing, a support is arranged outside the bearing, and the first labyrinth ring and the second labyrinth ring are arranged in the shell. The support is fixedly provided with a first flow guide ring, and first flow guide fibers are arranged in the first flow guide ring and make contact with the surface of the rotating shaft. The first labyrinth ring is axially arranged at the non-driving end of the rotating shaft in a sleeving mode, the second labyrinth ring is fixed to the shell, sealing teeth of the first labyrinth ring are meshed with sealing teeth of the second labyrinth ring, a cover plate is arranged outside the second labyrinth ring in a sealing mode, a second flow guide ring is installed on the side, close to the cover plate, of the second labyrinth ring, and second flow guide fibers are arranged in the second flow guide ring. And the second flow guide fiber is in contact with the surface of the first labyrinth ring.

The invention relates to the technical field of wind driven generators, in particular to a system for reducing generator shaft current damage and a working method.The system is characterized in that a generator spindle is connected with a generator shell through at least one insulating bearing, and at least one grounding ring is further arranged on the generator spindle; the grounding ring is grounded through a carbon brush and a grounding wire which are connected in sequence; the grounding wire is provided with a current transformer, and the current transformer is used for obtaining grounding current data and transmitting the grounding current data to the data processing end. And the data processing end is used for predicting working state data of the insulating bearing based on the grounding current data, the data of the environment where the fan is located, the fan operation data and the insulating bearing data, and evaluating whether a shaft current risk alarm is sent or not based on the working state data of the insulating bearing. By monitoring and evaluating the working state of the insulating bearing of the system, operation and maintenance personnel can master the working state of the insulating material of the insulating bearing at any time, and the situation that equipment is damaged by shaft current due to failure of the insulating material is avoided.

Proposed is a shaft grounding ring including an annular housing having a first through hole in a central portion thereof through which a motor shaft passes in a front-back direction, and having brush mounting grooves arranged radially on a front thereof, a plurality of grounding brushes respectively inserted into the brush mounting grooves of the housing, and an elastic end of which is in electrical contact with an outer circumferential surface of the motor shaft, and an annular cover coupled to the housing with the grounding brushes in between to fix the grounding brushes, having a second through hole in a central portion thereof in a front-back direction, which communicates with the first through hole and through which the motor shaft passes, and having radially arranged pin holes drilled in the front-back direction so that contact pins of a pressing jig penetrate and contact the front of the housing.

A discharge device for discharging electric currents from a rotor part of a machine, said rotor part having a shaft, the discharge device comprising an axially displaceable contact element, which is at least partly accommodated in a guide, for forming an electroconductive sliding contact between a sliding contact surface of the contact element and a shaft contact surface of the shaft, the sliding contact surface being provided for forming the sliding contact, the contact element being electroconductively connected to the guide and / or a retaining element of the machine, and the contact element being prestressed towards the shaft contact surface by means of a spring element, the contact element being at least partly wetted with an oily fluid, in particular at least in the area of its sliding contact surface.

To provide an electrically conductive structure which can be saved in space and furthermore can be suppressed in reduction of electrically conductive performance in use.SOLUTION: An electrically conductive structure (1) comprises: a holding member (2) which is an annular member around an axis line (x) and has electric conductivity; and an electrically conductive member (3) which is an annular member around the axis line (x). The electrically conductive member (3) has a gap (10) provided in such a manner as to extend in at least one radial direction, and a conductor (20) having electric conductivity and extending around at least one axis line x. The electrically conductive member (3) is held by a holding member (2). The conductor (20) has a pair of ends (20a, 20b) in a direction around the axis line x. The gap (10) continues to the ends (20a, 20B) of the conductor (20).SELECTED DRAWING: Figure 2

A grounding ring (10), also called an electrical balance ring, mounted between a fixed element (11) and a rotating element (12) comprises a first frame (20), a membrane (30) and a second frame (40), the first frame and the membrane being capable of carrying an electric current. The membrane includes a wear zone (ZU) at its second end, the wear zone being thicker than the main body of the membrane.

The invention discloses a grounding device for a motor shaft, and belongs to the technical field of grounding devices, the grounding device comprises a fixing ring and conductive fibers, the fixing ring comprises a pressing plate, a bottom plate and an annular shell, the pressing plate and the bottom plate are both arranged in the annular shell, the bottom plate is located on the side, away from the annular shell, of the pressing plate, and the conductive fibers are arranged in the annular shell. And the conductive fibers are arranged between the pressing plate and the bottom plate. According to the scheme, the conductive fibers can conveniently form a uniform and stable contact ring belt, and the grounding effect of the grounding device is ensured.

The utility model discloses a stator iron core and a stator assembly and an air-inlet grille actuator comprising the same, comprising an annular yoke part and a plurality of tooth parts extending from the annular yoke part to the axis of the annular yoke part, and a plurality of through holes axially penetrating through the stator iron core are uniformly arranged at the joint positions of the yoke part and the tooth parts. Arc-shaped grooves which are axially through are formed in the radial outer sides of the tooth parts between the adjacent through holes; any arc-shaped groove can be used as a positioning hole during injection molding of the stator iron core; any through hole can form an axially through grounding terminal jack after injection molding of the stator core. Any arc-shaped groove can form an axially through three-phase terminal jack after injection molding of the stator core. According to the utility model, the terminal holes for connecting the grounding terminals and the three-phase terminals are arranged on the stator core, and the injection molding positioning holes and the terminal holes are universalized, so that the miniaturization design of the motor is realized, the universality of the stator core is improved, and the integrated molding during the injection molding of the insulating framework is facilitated.

The invention provides a motor, an electric driving device, a chassis and electric equipment, the motor comprises a shell, a stator and an insulation connecting member, the shell is provided with an accommodating cavity, the stator is accommodated in the accommodating cavity, and the insulation connecting member is used for connecting the stator and the shell, so that the stator and the shell are relatively fixed and mutually insulated. According to the motor provided by the embodiment of the invention, the stator and the shell are connected through the insulating connecting component, so that the stator and the shell can be relatively fixed, the stator and the shell can be effectively insulated and separated, and the condition that current on the stator is transmitted to a bearing of the motor through the shell is effectively improved; therefore, the risk of electrocorrosion of the bearing is effectively reduced, and the performance of the motor is effectively improved.

A shaft grounding member for a rolling bearing, the shaft grounding member being mounted on a rolling bearing unit including the inner ring rotating type rolling bearing in which an outer ring is fixed to a housing and in which a shaft directly connected to a motor is fitted into an inner ring, the shaft grounding member includes: a spring plate including an annular portion and an elastic portion extending continuously from an inner peripheral side end portion of the annular portion to a center of the annular portion, the spring plate being made of a thin plate of a conductive material; and a soft conductive member mounted on a surface of the elastic portion on a side facing the rolling bearing. The soft conductive member is configured to abut against an end surface of the shaft. The spring plate includes a plurality of bent portions provided at a portion of the annular portion facing a side surface of the outer ring so as to be bent in an axial direction, the plurality of bent portions being deformed to apply a pressing force to the outer ring.

The present application provides a bearing electric corrosion-resistant dual-motor power assembly and an electric vehicle. The power assembly comprises two drive motors arranged adjacent to each other. A housing of the power assembly comprises a middle partition plate, and each of two opposite end surfaces of the middle partition plate comprises a bearing groove and an oil guide structure. Each bearing groove is configured to fix a motor shaft of one drive motor by means of a motor bearing. Two ends of each oil guide structure are respectively configured to be fixedly connected to the groove bottom of one bearing groove and configured to extend into a shaft hole of one motor shaft in the axial direction of the power assembly and convey a cooling liquid or lubricating oil into said shaft hole. A gap exists 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 configured to accommodate an annular conductive structure. Each conductive structure is configured to electrically connect one motor shaft and one oil guide structure. In the power assembly provided by the present application, the structure in which the middle partition plate supplies oil to the shaft holes of the motor shafts on two sides is used to conduct shaft currents to the housing for grounding so as to protect motor bearings.

An electronic oil pump comprises a stator assembly and an electric control board assembly, the stator assembly is electrically connected with the electric control board assembly, the stator assembly comprises a stator core and a winding, the stator core can provide support for winding winding; the electronic oil pump comprises a shielding piece, the stator assembly, at least part of the shielding piece and the electric control board assembly are distributed along the axial direction of the electronic oil pump, at least part of the shielding piece is located between the stator assembly and the electric control board assembly; the material of the shielding piece is a conductive metal material, at least part of the shielding piece covers at least part of the winding; thus, it is beneficial to reduce the influence of the electromagnetic wave generated by the winding on the performance of the electric control board assembly.

The present invention provides a shaft grounding member and a rolling bearing unit equipped with the shaft grounding member that suppress the generation of wear particles from conductive members or wear particles due to sliding contact between conductive members and mating materials, while also suppressing damage to the mating material, stably ensuring excellent conductivity, without forming new processing on the bearing, and without restrictions on the type of bearing, and can be used with existing bearings, and is space-saving and inexpensive. [Solution] The shaft grounding member for the rolling bearing is composed of an annular portion and an elastic portion that extends continuously from the inner circumference end of the annular portion to the center of the annular portion, and comprises a spring plate made of a thin sheet of conductive material and a soft conductive member attached to the side of the elastic portion facing the rolling bearing, the soft conductive member being able to contact the end face of the shaft. The spring plate is provided on the portion of the annular portion facing the side of the outer ring, bent in the axial direction, and has a plurality of bent portions that apply a pressing force to the outer ring by deforming themselves.

The present subject matter relates to an electric pump (100) for automobile including a driving device (10), a pump device (50), a control substrate (30), a housing (111) and a contact element (20). The driving device (10) having a rotor (12) rotatable about an axis X and a stator (11). The pump device (50) is driven by the driving device (10). The housing (111) is accommodating at least the driving device (10), the control substrate (30) and the pump device (50), the housing (111) being formed at least of a conductive material. The control substrate (30) with a drive circuit for controlling the driving device (10) and a grounding lead. Further, the contact element (20) made of one conductor electrically connects the stator (11), the grounding lead of the control substrate (30) and the conductive material of the housing (111).

A grounded brush assembly for an electric machine including a rotatable shaft having a bore, an outer housing, a bearing (s) rotatably coupling the shaft with the housing, and an electrically grounded stationary shaft extending through the bore of the rotatable shaft. The conductive base member receives the stationary shaft and has a main body portion and at least one end body portion having an outer diameter smaller than an outer diameter of the main body portion. A centering bearing is disposed about the end body portion. A conductive brush coupled with the main body portion includes conductive fibers extending radially outward from the main body portion and axially along a centerline. Each conductive fiber has an inner radial end coupled with the base member and an outer radial end engageable with an inner circumferential surface of the rotatable shaft such that at least one conductive path extends from the rotatable shaft to the stationary shaft.

The present invention discloses a highly conductive split ring of an omnidirectional elastic member. The highly conductive split ring of an omnidirectional elastic member according to the present invention solves the problem of corrosion of peripheral components caused by axial current in high-speed electric motors, which directly affects the operating stability of bearings mounted on the main shaft, thereby affecting the stability of the electric motor under conditions of high rotational speed, high power, and high torque. It also overcomes the state-of-the-art technical challenge of limiting the output of the electric motor, which belongs to the problem of axial current that needs to be resolved quickly, otherwise it may cause a potential safety hazard. The multiple fan-shaped lip edges used in the present invention not only ensure good electrical contact and sufficient contact area with the main shaft, but also move synchronously with the radial or axial movement of the main shaft, demonstrating excellent performance in following the main shaft operation and ensuring good instantaneous electrical contact between the conductive silicone adhesive and the main shaft. [Solution] The split ring comprises an outer frame, a support ring, and a conductive assembly, and the conductive assembly includes a conductive ring, multiple lip edges, a conductive silicone adhesive after it has solidified from a liquid state, and a conductive elastic member that is integrally attached to the conductive silicone adhesive.