512results about "Association with grounding devices" patented technology

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.

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.

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.

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.

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 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.

To provide a conductive structure and a conductive sealing device capable of improving abrasion resistance while providing electrical conductivity.SOLUTION: A conductive structure (1) comprises an annular conductive holding member (10), an annular conductive member (20) made of a metallic material, and an annular support member (30) made of an elastic material. The conductive member (20) and the support member (30) are held by the holding member (10) while overlapping in a direction of an axial line x. The conductive member (20) has an annular inner peripheral end part (25), and the support member (30) overlaps the conductive member (20) so as to be able to press the inner peripheral end part (25) of the conductive member (20) inward.SELECTED DRAWING: Figure 1

A shaft grounding system for rotating electrical machinery includes a collar attachable to the shaft and presenting a circumferential contact surface of a first metal. A stator securable to the machine housing carries at least one resiliently biased contact element of a second metal that wipes against the contact surface to conduct unwanted charge from the shaft to ground. In preferred embodiments the metals are dissimilar and at least one is a noble metal. The system may incorporate multiple contact surfaces, modular contact elements and an on-board monitoring subsystem that provides local and remote diagnostics.

The application discloses a doubly-fed generator and wind power generation equipment, the doubly-fed generator fixes an encoder shaft at one end of a rotating shaft, the encoder shaft is electrically connected with the rotating shaft, the outer periphery of the encoder shaft is provided with a conductive member fixed on a casing, the encoder shaft is electrically connected with the conductive member, and the conductive member is grounded. Namely, by integrating the grounding structure on the encoder shaft, the number of parts used by the grounding structure can be reduced, the construction of the grounding structure is simplified, and the grounding structure is higher in integration level and smaller in size. Moreover, since the encoder shaft generally has no load, the diameter of the encoder shaft can be flexibly adjusted to adapt to the structure of the conductive member. And meanwhile, the secondary influence of the smaller grounding structure on the vibration or displacement of the rotating shaft is smaller, so that the electric corrosion prevention function is continuously realized. In the operation process of the doubly-fed generator, induced current generated by the rotating shaft can be discharged to the ground through the encoder shaft and the conductive piece, so that electrocorrosion of the bearing is prevented.

The invention relates to an electric pump comprising a motor housing (3), a stator (2) located in the motor housing (3) and a rotor assembly (33) circumferentially surrounded by the stator (2), wherein the motor housing (3) is vacuum-impregnated and the rotor assembly (33) is penetrated by a stationary running shaft (32) which is pressed into the motor housing (3) or into a stiffening disk (15, 40) connected to the motor housing (3).

The utility model provides a kind of plastic shell electronic oil pump, including plastic shell, motor stator, PCB board, metal back cover, ground terminal and ground copper bar;The lower end of ground terminal is connected with motor stator core, and upper end is welded with PCB board;Metal insert is injection molded outside plastic shell;One end of ground copper bar is welded with PCB board, and the other end is connected with metal insert.The electronic oil pump provided by the utility model has the advantages of lightweight, high power density, low cost, etc., and can meet the CLASS3 requirement of EMC parts.

An electric rotary machine according to the invention comprises a rotor (20) and a stator unit (10), which includes a stator body (11), a housing (3), a stator winding (13), and an electrical conductor (30). The electrical conductor (30) provides an electrically conductive connection between the stator body (11) and the housing (3) for conducting common-mode current via the electrically conductive connection. The electrically conductive connection is arranged longitudinally to conductors of the stator winding (13) arranged in the stator body (11) or on a side of the stator body (11) facing the rotor (20).

The utility model discloses a connector assembly and a motor, and the connector assembly comprises a power supply connecting piece which is provided with a connecting end and a plugging end, and a middle part is formed between the connecting end and the plugging end of the power supply connecting piece; a fixing groove is formed in the connector base, the middle part is arranged in the fixing groove, and the connecting end is arranged on the connector base; the shell is arranged on the connector base, the plugging end is arranged on the shell, a first sealing surface is formed on the periphery of the fixing groove, a second sealing surface is formed on the shell, and the first sealing surface is attached to the second sealing surface. According to the connector assembly, the shell covers the connector base so as to protect the internal assembly from being influenced by the external environment, the first sealing surface is arranged on the peripheral edge of the fixing groove, and the second sealing surface is formed on the shell and is attached to the first sealing surface so as to form an effective sealing structure, so that the sealing performance of the connector assembly is improved, and the service life of the connector assembly is prolonged. Therefore, the reliability and durability of the connector assembly can be improved.

An electric vehicle drive device (1) is provided with: a motor body (5) having a shaft (5a), a rotor (5b) that rotates integrally with the shaft (5a), and a stator (5c) that surrounds the rotor (5b) from the outside in the radial direction; a motor housing that accommodates the motor main body (5); a shaft grounding member (11) for grounding the shaft (5a); and a rotation sensor (17) for detecting the rotation of the shaft (5a), the rotation sensor (17) being provided on one side shaft portion (5a1) extending from the rotor (5b) to one side in the axial direction, and the shaft grounding member (11) being provided on the other side shaft portion (5a2) extending from the rotor (5b) to the other side in the axial direction.

The utility model discloses a grounding device of a motor, which relates to the technical field of motor grounding and comprises a grounding pile body, the bottom end of the grounding pile body is connected with a drill bit, the outer side of the grounding pile body is sleeved with a movable sleeve, and the inner wall of the movable sleeve is symmetrically connected with sliding blocks. A sliding groove matched with the sliding block is formed in the outer wall of the grounding pile body, and limiting blocks are symmetrically distributed on the outer side of the movable sleeve. According to the utility model, through the arrangement of the movable sleeve and the limiting block, the vertical insertion of the grounding pile body can be effectively ensured through the mutual cooperation of the movable sleeve and the limiting block, so that the inclination condition of the grounding pile body in the hammering process can be effectively prevented; and through the mutual cooperation of the guide block and the conical rod, the effective support of the limiting block can be realized, and the ground gripping capability of the device can be further improved, so that the ground stud body is effectively prevented from easily moving under the action of external force, and the reliability of the device in use can be ensured.

A motor device (11) comprises a motor (12) and a motor control device (13). The motor control device comprises a substrate (41) that is attached to an end section of the motor, and a cover (42) that is attached to the end section of the motor so as to cover the substrate. The motor has a motor body (20), and a connector assembly (25) that is positioned at a side of the motor body. The substrate has a overhang section (41B) that projects to the side of the motor body so as to overlap with the connector assembly. The overhang section has terminal connection sections (53A, 54A, 53B, 54B) that are located between an end wall of the cover and the connector assembly, and to which terminals (25D1, 25D2, 25E1, 25E2) retained by the connector assembly are connected. The cover has a first protruding section (42A) that protrudes toward the substrate from an inner surface of the end wall. When the end wall of the cover sags in the direction approaching the substrate, the first protruding section comes into contact with a region of the substrate, said region neighboring the terminal connection sections, before the terminals come into contact with the end wall of the cover.

The application relates to the technical field of wind driven generators, in particular to a semi-direct-drive wind driven generator set. The semi-direct-drive wind driven generator set comprises a generator, a gear box, a high-frequency grounding belt and a conductive component. The generator comprises a stator base, a stator winding and a rotor component. The gear box comprises a box body and an output shaft. The box body is connected with the stator base, and the output shaft is rotationally arranged in the box body and is in transmission connection with the rotor component. The box body and the stator base are respectively grounded through the high-frequency grounding belt. The output shaft is provided with a plurality of conductive components along the circumferential direction, so that the output shaft is respectively conducted with the high-frequency grounding belt through the plurality of conductive components. The output shaft is provided with the plurality of conductive components along the circumferential direction, so that the output shaft is respectively conducted with the high-frequency grounding belt through the plurality of conductive components, the grounding discharge amount of the current is increased, the shaft voltage on the output shaft is reduced, the electric corrosion of the bearing and the tooth surface on the output shaft is avoided, the protection of the output shaft is improved, and the vibration and noise of the gear box are reduced.