42results about "Magnetically actuated clutches" patented technology

Freewheel clutch (630, 630A, 630B) for use in a power transmission device with hydraulic fluid, wherein the freewheel clutch (630, 630A, 630B) comprises the following: a coupling arrangement (20, 120, 220, 420, 520, 600, 600A, 600B) with an inner ring (36) and an outer ring (22) rotatable with respect to the inner ring (36), wherein the outer ring (22) has several locking structures consisting of inner ratchet teeth (34) and outer ratchet teeth (44); and a ratchet finger arrangement (48, 448, 548, 632) with an active ratchet finger (50) which is for movement between a first position displaced from engagement with the inner ratchet teeth (34) and outer ratchet teeth (44), which defines a free-running mode, and a second position engaged with the inner ratchet teeth (34) and outer ratchet teeth (44), which defines a locked mode by which the inner ring (36) is supported, wherein the inner ring (36) and / or the active locking finger (50) has / have an anti-disengagement feature configured to assist in holding the actuator element in its first position during a rotation of the outer ring (22) relative to the inner ring (36) by counteracting hydraulic forces applied by the hydraulic fluid to the active locking finger (50), characterized in that the anti-disengagement feature counteracts the hydraulic forces applied to the active locking finger (50) by diverting the fluid to flow in a path configured to push the active locking finger (50) into its first position.

An electromagnetically actuated jaw clutch (10) has a shift sleeve (12) with an internal toothing (16) which is mounted non-rotatably and axially displaceably on an external toothing (18) of a transmission shaft (14), an actuator (20) with a magnetic coil (22) which is designed to move the shift sleeve (12) axially on the transmission shaft (14) into a first shift position, a spring element (42) which interacts with the shift sleeve (12) and acts on the shift sleeve (12) against a movement caused by the actuator (20) in the direction of a second shift position, and a support ring (40) which is mounted on the transmission shaft (14) and is arranged in an axial direction (A) of the shift sleeve (12) between the spring element (42) and the internal toothing (16) of the shift sleeve (12). The support ring (40) is rigidly connected to the transmission shaft (14) with respect to the axial direction (A).To mount the shift sleeve (12) on the transmission shaft (14), an assembly (67) is formed by arranging the support ring (40) and the spring element (42) on the shift sleeve (12), and the assembly (67) is pushed onto the external teeth (18) of the transmission shaft (14) up to a predetermined end position of the support ring (40), whereby the support ring (40) is axially fixed at the predetermined end position on the transmission shaft (14).

This utility model relates to the field of electromagnetic clutch technology and discloses an energy-saving electromagnetic clutch for water pumps, including a first housing, a second housing, a drive shaft, and a driven shaft. One end of the drive shaft extends into the first housing and is equipped with a drive friction plate, while one end of the driven shaft extends into the second housing and is equipped with a driven friction plate. An annular frame is provided on the side of the drive friction plate away from the driven friction plate, and a magnetic ring is fixedly installed inside the annular frame. A suction cup electromagnet corresponding to the magnetic ring is installed on the inner wall of the first housing. This energy-saving electromagnetic clutch for water pumps, through the installation of the magnetic ring and the suction cup electromagnet, allows for the following interaction: when the coil of the suction cup electromagnet is energized, the electromagnet generates an attractive force, causing the magnetic ring to drive the drive friction plate to move synchronously away from the driven friction plate. If the direction of the current is changed, the suction cup electromagnet generates a repulsive force, causing the magnetic ring to push the drive friction plate into contact with the driven friction plate, thereby achieving transmission.

The inventive concept provides a liquid supply unit which may implement a rotation (swing) of a plurality of nozzles by a single motor, and which has simple structure. The liquid supply unit includes a first nozzle, a second nozzle, a motor, and a first belt. The first nozzle includes a first supply pipe for supplying a liquid, a first rotation part provided at a bottom part of the first supply pipe, and a first electromagnetic clutch provided at a bottom part of the first rotation part. The second nozzle includes a second supply pipe for supplying a liquid, a second rotation part provided at a bottom part of the second supply pipe, and a second electromagnetic clutch provided at a bottom part of the second rotation part. The motor provides a rotation force to the first electromagnetic clutch. The first belt which interlocks a rotation of the first electromagnetic clutch and the second electromagnetic clutch.

The present disclosure relates to electric vehicles and electric drive trains for such electric vehicles. The electric drive train is configured to include an electric motor and a disconnectable differential assembly arranged for transmitting a motive power generated by the electric motor to a pair of ground engaging wheels. The disconnectable differential assembly includes a power transmission mechanism driven by the electric motor, a differential mechanism interconnected with the pair of ground engaging wheels, and a power operated disconnect mechanism for selectively coupling and uncoupling the power transmission mechanism and the differential mechanism.

A filter pulley includes: a hub configured to be fixed to a shaft that rotates about an axis; a crown portion coaxially and rotatably mounted on the hub; and a plurality of elastic groups arranged circumferentially relative to the hub and the crown portion, each of the elastic groups being sandwiched between a pair of first elements integral with the hub (2) and between a pair of second elements integral with the crown portion, the first elements comprising at least two spokes carried by an actuator, wherein the actuator comprises two parts that can be selectively coupled based on angular position data between the crown portion and the hub and / or based on torque data transmitted between different elements of the system including the pulley.

The present invention relates to an electromagnetic brake (1) or clutch comprising an electromagnet (10) arranged in a ring around a longitudinal axis (L) with a magnet housing (20) having an inner pole (14) and an outer pole (16), an armature disk (40), and a hub flange (50), wherein the armature disk (40) is movably arranged between the hub flange and the electromagnet along the longitudinal axis (L) and can frictionally interact with the inner pole (14) and / or the outer pole (16), wherein at least one first elastic damping element (60) is provided between the electromagnet (10) and the armature disk (40) and / or at least one second elastic damping element (70) is provided between the armature disk (40) and the hub flange (50) to decelerate a movement of the armature disk (40).

A positive engagement, electromagnetically commutated clutch (10) is shown, comprising an axially movable driven part (16), an axially fixed driven part (24), and a stator (32) having at least one drive coil (36) capable of being energized and switched with polarity reversal to move the axially movable part (16) along the shaft (12). The positive engagement clutch (10) further comprises a permanent magnet (38) for retaining the moving part (16) in a final position, and a spring return element (54) for transferring the moving part (16) from the final position to the initial position, the holding force exerted by the permanent magnet (38) on the moving part (16) in the final position being greater than the spring return force of the spring return element (54). A method for actuation of such a positive engagement, electromagnetically commutated clutch (10) is further shown. Figure 2

An electromagnetic excitation system for an electromagnetic brake or clutch has an electromagnet and a permanent magnet. The electromagnet includes a pot-shaped annular housing about a longitudinal axis with an inner annular portion, an outer annular portion, a bottom portion connecting the inner annular portion and the outer annular portion, and an excitation coil. The excitation coil is inserted into the housing between the inner annular portion and the outer annular portion. A free end of the outer annular portion forms a magnetic pole. The permanent magnet is arranged on a flange on the side facing away from the excitation coil, and the flange is arranged on the side of the excitation coil facing away from the bottom portion and protrudes from the inner annular portion to the outer annular portion, forming an air gap between the flange and the outer annular portion.

Actuator (10) with a stator (14) and an armature (16) forming an electromagnetic drive (18) for a switching element (20) of the actuator (10) extending in an axial direction (A), wherein the actuator (10) is configured to adjust the armature (16) in the axial direction (A) by means of the stator (14), and has at least one coupling device (40) by means of which the switching element (20) can be coupled to the armature (16), wherein in a coupled position of the coupling device (40), the switching element (20) is adjusted in the axial direction (A) together with the armature (16), and in a decoupled position of the coupling device (40), the switching element (20) is not adjusted in the axial direction (A) when the armature (16) is adjusted in the axial direction (A).

The present invention relates to a two-speed transmission for an electric driving vehicle and the two-speed transmission for an electric vehicle has only one actuator. The transmission comprises a planetary gear mechanism (12), an elastic body (44), an armature (26) to integrally rotate with an input axis, an electromagnetic coil (46) and a multi-plate friction clutch (30) . Aring gear (20) is fixed to a housing. The armature (26) comprises clutch projection portions (26-1). A dog clutch is constituted by the clutch projection portions (26-1) and recess portions (18-2) of a sun gear (18). When the electromagnetic coil (46) is not electrically energized, the dog clutch is engaged. The rotation of the input axis is reduced and is transmitted to an output axis via the sun gear (18) and a carrier (16). When the electromagnetic coil (46) is electrically energized, the armature (26) is displaced against elastic force, the dog clutch becomes a non-engaging state, a multi-plate friction clutch (30) becomes an engaging state by pressing flange portions (26-4) of the armature (26) and the rotation of the input axis is transmitted to the output axis with a one-to-one relationship. The transmission can comprise a one-way clutch to prevent torque interruption when switching the gear ratio.

The application relates to a hydraulic oil pump power transmission device and relates to the technical field of hydraulic oil pumps; the hydraulic oil pump power transmission device comprises an electromagnetic clutch, a driving disc of the electromagnetic clutch is used for being connected with a transmission shaft, a driven disc of the electromagnetic clutch is used for being connected with an input end of a hydraulic oil pump, a fixed main shaft is further arranged on the hydraulic oil pump, the fixed main shaft is coaxially arranged with the input end of the hydraulic oil pump, the driving disc and the driven disc of the electromagnetic clutch are both sleeved on the fixed main shaft, and the driven disc is in sliding connection with the fixed main shaft. The application has the effect of improving the coaxiality between the driving disc and the driven disc of the electromagnetic clutch.

A differential separation system (100) for a vehicle comprises a housing (102) arranged to receive engine torque, a first clutch element (104), and a differential unit (106). The housing (102) includes radially inwardly directed teeth (108), and the first clutch element (104) engages with the radially inwardly directed teeth (108) and is axially displaceable on them. The first clutch element (104) includes a first spur gear (110). The differential unit (106) is arranged for drive engagement with a pair of axle shafts and includes a second clutch element (112) with a second spur gear (114) arranged to engage with the first spur gear (110) to enable selective torque transmission between the housing (102) and the differential unit (106).

The utility model discloses a butterfly valve convenient to lock belongs to butterfly valve technical field, a butterfly valve convenient to lock, including two valve body and valve plate, and the valve plate is installed between two valve body, its characterized in that still includes: drive assembly and rotation lever subassembly, and the valve plate is through the drive of drive assembly and rotates and opens and closes, and drive assembly is through the drive of rotation lever subassembly and rotates, and the spline shaft in rotation lever subassembly is movably connected with spline cover, and the spline shaft is connected with passive rotating shaft, and spline cover is connected with driving rotating shaft, and driving rotating shaft slides in the sliding slot in the sleeve interior through the fixed slip ring of outside, and when spline cover is set in the outer end of spline shaft when inwards push driving rotating shaft, can drive spline shaft to rotate through rotating driving rotating shaft, and when static, through magnet one and magnet two same sex repulsion, and spline shaft and spline cover will separate and disconnect, thereby even rotating under the condition that driving rotating shaft is not pushed also can not drive valve plate.

Wheel-side arrangement (10), comprising: a first shaft (26) supported on a carrier (12) attached to a vehicle frame with first coupling teeth (38); a second wave (28) ; a coil (50); a sleeve (32) rotatably attached to the second shaft (28), which is axially displaceable with respect to the first shaft (26), with second coupling teeth (34) which alternately engage and disengage the first coupling teeth (38) due to an electromagnetic field generated by exciting the coil (50), further comprising: an inner hub housing (16) which is attached to the carrier (12) and includes the coil (50), the sleeve (32), a piston (52), a thrust bearing (56) positioned axially between the piston (52) and the sleeve (32) for transmitting axial movement of the piston (52) to the sleeve (32) when the coil (50) is energized, and a spring (58) for returning the piston (52) to a disengaged position.

An electromagnetically shiftable positive engagement clutch is shown, having a shifting sleeve which is arranged on a shaft for joint rotation therewith and is linearly displaceable along the shaft between a clutch engagement position and a clutch disengagement position, a clutch body which is aligned coaxially with the shaft, and a stator having at least one energizable drive coil for adjustment of the shifting sleeve along the shaft, wherein in the clutch engagement position there is a positive engagement between the shifting sleeve and the clutch body and thus a rotary connection between the shaft and the clutch body. Moreover, the positive engagement clutch has a stationary sensor device which is arranged adjacent to the shifting sleeve and includes at least one Hall sensor and at least two magnets that magnetically enclose the at least one Hall sensor and are permanently stationary relative to the at least one Hall sensor, with the magnets pointing toward the shifting sleeve and having opposite polarities relative to each other. The sensor device is adjacent to the shifting sleeve in a radial direction so as to be spaced apart therefrom by a radial gap, so that an axial movement of the shifting sleeve is detected by the Hall sensor through a reduction in the radial gap.

The application discloses a kind of clutch, power system and vehicle, it is related to vehicle technical field, it aims at solving how to avoid the problem that clutch produces vibration and abnormal sound when external force impact.The clutch includes first transmission member and second transmission member, the first transmission member includes first friction part and first transmission part, the second transmission member includes second friction part and second transmission part, the first transmission member is relatively movable with the second transmission member, to make the first transmission part and the second transmission part switch between engagement state and separation state;The first friction part and the second friction part are adapted to friction contact when the engagement state, for reducing the impact of external force on clutch.

A power transmission system including: a motor that includes a rotor, and a stator provided outside the rotor and movable in a rotation axis direction of the rotor; a moving member that is connected to the stator and movable in the rotation axis direction; a clutch that disables transmission of power between the rotor and a power transmission member, in conjunction with movement of the moving member; a power source that applies a voltage to a coil wound around the stator and the moving member, and an operation control part that switches between a connected state where the clutch transmits power and a disconnected state where the clutch does not transmit power, by causing the power source to apply a voltage to the coil to move the stator in the rotation axis direction of the rotor.

This invention discloses a three-position electromagnetic shift synchronizer structure, relating to the field of reducer technology. The three-position electromagnetic shift synchronizer structure includes a gear seat and a coil fixing seat. A low-gear assembly and a high-gear assembly are respectively connected to both sides of the gear seat. A gear sleeve for abutting the low-gear assembly and the high-gear assembly is movably connected to the circumference of the gear seat. The coil fixing seat is fitted outside the gear sleeve, and a permanent magnet is provided on the circumference of the gear sleeve. Several coils cooperating with the permanent magnet are provided on the inner wall of the coil fixing seat. This invention uses a spring-slider mechanical holding mechanism for neutral gear and permanent magnet attraction for high / low gears. No coil energization is required in any of the three steady-state positions, resulting in zero static power consumption and significantly improving energy efficiency and coil lifespan. By combining the current directions of the three coils, synergistic pulling / pushing and resisting forces can be flexibly generated to adapt to the resistance characteristics of different shift directions, resulting in smooth and shock-free shifting.

This invention discloses an electromagnetic shaftless water pump, aiming to solve the problems of low driving efficiency and limited functionality of traditional water pumps. The pump mainly includes a pump casing, a stator core, and a rotor core. The rotor core has a pump channel with a helical impeller at its center. The rotor core selectively transmits power to a bottom mounting ring via a transmission assembly. The mounting ring securely mounts cutting tools. The transmission assembly controls the sliding of a spline sleeve via an electromagnet, enabling the connection or disconnection of power between the rotor core and the mounting ring, thus flexibly switching between pure pumping mode and a combined pumping and cutting tool operation mode. This invention achieves integrated high-efficiency pumping and underwater treatment functions.

The invention relates to an electromagnetic clutch with a shift sleeve (16) which is rotationally fixed on a first shaft (12) and is linearly adjustable along the first shaft (12) between an engaged and disengaged state, a clutch body (20) which is aligned coaxially with the first shaft (12), a stator (26) which includes a coil (30) which serves to linearly adjust an armature ring (38) along the first shaft (12), wherein the armature ring (38) is radially mounted separately from the first shaft (12) and the clutch body (20) in an axial guide (52), wherein an adjustment of the armature ring (38) by means of the coil (30) also results in an adjustment of the shift sleeve (16). The invention also relates to a method for engaging and disengaging an electromagnetic clutch (10).

The application discloses a kind of loading test bench drive shaft automatic combination device and adjusting method, belong to detection equipment technical field, drive shaft automatic combination device includes electromagnetic clutch assembly, electromagnetic clutch assembly includes driving part, driven part, driving ring gear part, driven ring gear part, position sensor and torque loading assembly;Driving ring gear part is installed in driving part;Driven ring gear part is installed in driven part;Driving ring gear part and driven ring gear part are equipped with the ring gear tooth part of adaptation;Position sensor is set in the axial side of driving ring gear part or driven ring gear part;Torque loading assembly is connected with driving part and loads torsion to driving part, and torque loading assembly is connected with position sensor.This loading test bench drive shaft automatic combination device has static automatic combination mode and adjustment function, with the remarkable effect of optimizing transmission performance, improving test efficiency, enhancing reliability and improving precision.

The application relates to a clutch, a control method and a vehicle, and belongs to the technical field of vehicles.The clutch comprises a driving assembly, a driven assembly and a buffer mechanism.The driving assembly comprises a driving shaft and a driving disc fixedly sleeved on the driving shaft.The driven assembly comprises a driven shaft coaxially arranged with the driving shaft and a driven disc fixedly sleeved on the driven shaft.The driving disc and the driven disc are respectively provided with dog teeth capable of being engaged with or separated from each other.The buffer mechanism comprises an elastic damping element fixedly arranged between the driven shaft and the driven disc.The application realizes elastic damping connection of the driven disc and the driven shaft, converts rigid collision between the dog teeth into flexible buffering by utilizing elastic deformation of the element when the dog teeth are engaged with each other, can absorb and dissipate impact energy, converts most mechanical energy into heat energy and elastic potential energy, reduces sound radiation intensity, suppresses circumferential impact noise and axial impact vibration generated in the engagement process, and relieves engagement noise and transmission jitter.

A clutch housing (20) houses a clutch unit (130) therein. A movable core (32) is provided outside the clutch housing (20). An electromagnetic coil (33) can drive the clutch unit (130) by using electromagnetic force to drive the movable core (32). An actuator housing (31) houses the movable core (32) and the electromagnetic coil (33). On the radially inner side of a specific end surface (310) with respect to an outermost diameter section (G1), the specific end surface (310) being the end surface on the clutch housing (20) side in the axial direction of the actuator housing (31), bolts (91) are provided such that one end thereof is joined to the specific end surface (310). Nuts (92) is screwed onto the other end of the bolts (91) and can fix the actuator housing (31) and the clutch housing (20) in a state in which the clutch housing (20) is sandwiched between the nuts (92) and the specific end surface (310).

The present invention relates to a variable speed power transmission clutch system in which a plurality of load shafts are driven corresponding to one power shaft by eddy currents generated by magnetic force and a rotating magnetic field.To this end, the present invention provides a variable speed power transmission clutch system having a multiple output structure, characterized in that it includes a plurality of load shafts B arranged concentrically, a plurality of second rotating units 20 each having a cylindrical body 21a formed at an end of the load shaft B and a magnet 22 formed around the outer diameter of the cylindrical body 21a, a first rotating unit 10 provided to face the outer diameter surfaces of the plurality of second rotating units 20 and having a magnetic force reinforcing plate 12 that magnetically reacts with the magnet 22 on the surface facing the second rotating unit 20, and a power shaft A connected to the rotation center of the first rotating unit 10 to provide a rotational force.

To provide a rotary power transmission device with a bistable clutch.SOLUTION: A power transmission device includes a clutch, an actuator and a stop member. The clutch is received in a first housing, and has a first clutch member coupled to a second housing, and a second clutch member coupled to the first housing. The second clutch member is movable and selectively engageable with the first clutch member. The actuator has a coil and a plunger driven for movement by a magnetic field generated by the coil so that the plunger moves axially to move the second clutch member relative to the first clutch member. The stop member has a retracted position separated from the plunger and an advanced position within a path of movement of the plunger so as to limit movement of the plunger when the stop member is in the advanced position.SELECTED DRAWING: Figure 1

Cutting tool drive (3) for a lawn cutting tool (2) of a lawn mower (1), wherein the cutting tool drive (3) comprises a clutch, characterized in that the clutch is designed as an electrically actuated magnetic clutch (20) and the cutting tool drive (3) comprises a thermal protection device (40) which cancels the electrical actuation of the magnetic clutch when an overheating condition occurs.

An electromagnetic clutch, an electromagnetic clutch assembly, a power device, and a vehicle are provided. The electromagnetic clutch (10) includes a connecting member (1), a sliding sleeve (2), and an excitation member (3). The sliding sleeve (2) is slidably connected to the connecting member (1), and the excitation member (3) is arranged on an outer side of the sliding sleeve (2). The excitation member (3) can generate electromagnetic induction with the sliding sleeve (2) and drive the sliding sleeve (2) to move, so that the sliding sleeve (2) can be connected to a first transmission member (20) or a second transmission member (30), thereby forming different gear positions. Moreover, the structure is simple, thereby enabling the vehicle to output a wider range of speeds.