51 results about "Locking differential" patented technology

The utility model discloses a limited slip locking differential which comprises a driving ring and a driven ring, the driving ring is connected with the driven ring in a meshed mode, and a separating mechanism is arranged between the driving ring and the driven ring. The driven ring sleeves the outer side of the shaft side gear and is in transmission connection with the shaft side gear; a limiting protruding ring and transmission teeth are integrally formed on the periphery of the shaft side gear, and the transmission teeth are located on one side of the limiting protruding ring and connected with a first transmission tooth groove formed in the inner circumferential side wall of the driven ring in a meshed mode. A positioning ring is arranged between the limiting convex ring and the driven ring, a second transmission tooth groove is formed in the inner circumferential side wall of the positioning ring, the positioning ring is in meshed connection with the transmission teeth through the second transmission tooth groove, and one side of the positioning ring makes contact with the limiting convex ring to achieve abutting limiting. The other side of the positioning ring is connected with the side wall of the side, away from the driving ring, of the driven ring through a damping mechanism.

The present disclosure relates to an electronic locking differential gear mechanism having a lock detection mechanism for sensing and indication of a locked and unlocked state of the locking mechanism. The electronic locking differential gear mechanism includes an electronic stator which, when activated, rotates a ramped collar about an axis of the mechanism. The ramps of the ramped collar axially displace a plurality of push rods, which displace a locking collar and cause it to engage with a locker gear, placing the mechanism in a locked state. A sensor assembly detects the displacement of a sensing plate which is displaced along with the push rods, and thereby senses whether the mechanism is in a locked or unlocked state.

Locking differential systems, vehicles, and methods are provided. An electric vehicle includes an electric motor including a stator and a rotor, where the rotor is configured to rotate about a rotor axis; a rotor shaft connected to the rotor for rotation about a rotor axis; a differential positioned within the rotor shaft; a first input shaft connected to a first side of the differential; a second input shaft connected to a second side of the differential; a locking system configured to selectively lock rotation of the first input shaft to rotation of the rotor shaft; a control system configured to determine when to lock rotation of the first input shaft to rotation of the rotor shaft; and an actuation system configured to operate the locking system to lock rotation of the first input shaft to rotation of the rotor shaft.

Lash can be mitigated in a locking system of a differential assembly to improve lock detection accuracy. A sensor tracks the position of an armature arrangement that moves in response to the energization / de-energization of an electromagnet to lock and unlock the differential assembly. Reducing lash allows a detection system to better determine a position of the armature based on the sensor readings. Example structures to reduce lash include a biasing ring to hold the armature at a specific position; a shim disposed between the differential case and the stator to hold the stator at a specific position relative to the differential case; and a stop member to hold the armature at a specific position when the differential assembly is unlocked.

A separating device with a locking differential, comprising a housing (10), a support ring (20) arranged in the housing (10) and configured to enclose a pinion (40), and a clutch ring (30) connected to a sleeve (60) configured to be actuated by an actuating device (50), wherein the clutch ring (30) is configured to move in an engagement direction when the sleeve (60) is actuated by the actuating device (50) to engage a first engagement section (331) located at an end (31) of the clutch ring (30) positioned in the housing (10) with a second engagement section (22) located on a surface of the support ring (20) to achieve four-wheel drive.

The utility model relates to the field of differential mechanisms, in particular to a lock type differential mechanism which comprises a differential mechanism shell, a first half shaft and a second half shaft are rotationally installed on the two sides in the differential mechanism shell respectively, and a first support is fixed to the side, close to the first half shaft, of the top of the differential mechanism shell. The lock type differential mechanism has the advantages that the lock type differential mechanism overcomes the defects of a common differential mechanism by forcibly eliminating the rotating speed difference, when the locking mechanism is activated, the first support is fixed on the top of the differential mechanism shell, the second support is fixed on the side, close to the second half shaft, of the top of the differential mechanism shell, and the opposite ends of the first half shaft and the second half shaft can be connected through the locking mechanism. The half axle gear of the differential mechanism is physically locked, so that the first half axle and the second half axle are rigidly connected and become an integrated driving shaft, wheels on the two sides must rotate synchronously, even if the wheel on one side is suspended or slips, the wheel on the other side can still obtain engine torque, and therefore it is guaranteed that the vehicle gets out of order.

A locking differential may be an electric locking differential with an electromagnet which actuates a clutch plate. The electric locking differential may include a final drive gear. The electromagnet may not rotate with the final drive gear. The electric locking differential may also include an actuation side housing. The actuation side housing may be affixed to the final drive gear. The electromagnet may cause an electromagnetic field to couple from a ferrous housing of the electromagnet to the actuation side housing. The electromagnetic field may axially translate the electromagnet relative to the actuation side housing. The ferrous housing and the actuation side housing may include a chamfered edge through which the electromagnetic field couples.

A control system is configured to determine a differential state of a vehicle. The control system includes a first wheel sensor, a second wheel sensor, and an electronic controller. The first wheel sensor is configured to detect a first wheel speed of a first wheel. The second wheel sensor is configured to detect a second wheel speed of a second wheel. The electronic controller is configured to determine whether the first wheel speed is equal to or different from the second wheel speed, and to turn off an indicator when the first wheel speed is different from the second wheel speed. The indicator is illuminated to indicate a locked differential state of the vehicle.

A method for determining the rotational speeds of several wheels of a vehicle (1) with a transmission unit (3) and several locking differential units is shown and described.wherein the method comprises the following step: determining a rotational speed of a second output section (17) of each locking differential unit (5) both from the detected rotational speed of the first output section (9) of the corresponding locking differential unit (5) and from the detected rotational speed of the input section (11) of the first locking differential unit of the multiple locking differential units and the detected rotational speed of the input section (11) of the second locking differential unit of the multiple locking differential units, or from the detected rotational speed of the input section (13) of the transmission unit (3) and the detected rotational speed of the input section (11) of the locking differential unit (5) of the multiple locking differential units, or from the detected rotational speed of the input section (13) of the transmission unit (3) and the detected rotational speed of the output section (15) of the transmission unit (3). Furthermore, a device, a vehicle (1),a computer program and a computer-readable medium are represented and described.

The utility model provides a self-locking differential assembly which comprises a shell, a planetary gear assembly, a side gear, a first main gear and a planetary gear carrier, the planetary gear assembly comprises a planetary gear and a rotating shaft, a semi-closed frame is arranged on the outer side of the planetary gear carrier, the frame is fixedly connected with the planetary gear carrier, a locking mechanism is arranged on the outer side of the frame, and the side gear is fixedly connected with the side gear. The locking mechanism comprises a shell, a motor is arranged at the end, away from the frame, of the shell, an output shaft of the motor is connected with a lead screw, a locking block assembly is arranged in the shell and comprises a connecting block and a plurality of sliding blocks, the sliding blocks are slidably connected with the shell, the connecting block is in threaded connection with the lead screw, and locking grooves matched with the sliding blocks are formed in the ends, close to the sliding blocks, of rotating shafts. The locking block assembly is inserted into the rotating shaft through the locking groove. According to the self-locking differential mechanism assembly, the frame is installed on the planetary gear carrier, the locking mechanism is installed on the frame, the locking block assembly is connected with the rotating shaft in an inserted mode, axial spinning of the planetary gear assembly is locked, and therefore the self-locking function of the differential mechanism is achieved.

The application is suitable for the technical field of differential lock control, and provides a differential lock control method, device, vehicle and storage medium, wherein the method comprises the following steps: acquiring vehicle running parameters corresponding to a target differential lock of a target vehicle when the target differential lock is locked; judging whether the target vehicle has escaped from a trouble according to the vehicle running parameters and a preset non-escape-from-trouble condition; and controlling the target differential lock to be unlocked when the target vehicle has escaped from the trouble. After the differential lock is locked, whether the vehicle has escaped from the trouble is judged according to the vehicle running parameters corresponding to the locked differential lock and the preset non-escape-from-trouble condition, and the locked differential lock is automatically unlocked only when the vehicle has escaped from the trouble, which helps to improve the driving experience and driving safety of the user.

This disclosure provides an electric drive system (10) for a vehicle. The electric drive system (10) comprises a first planetary gear system (20) and a second planetary gear system (30), which is a compound planetary gear system and includes an inner planetary gear set (30a) and an outer planetary gear set (30b). The second planetary gear system (30) includes a double-sided gear (33) configured between the inner planetary gear set (30a) and the outer planetary gear set (30b) such that the double-sided gear (33) acts as the inner ring gear of the inner planetary gear set (30a) and as the outer sun gear for the outer planetary gear set (30b). The electric drive system (10) is configured to function as an open differential, a limited-slip differential, and a self-locking differential, while reducing the overall weight of the vehicle, resulting in improved vehicle range and efficiency.

A braking system includes brake circuits and a brake stability module. The brake circuits are configured to be independently activated and deactivated and when activated apply braking force at respective wheels of a vehicle. The braking stability module is configured to i) detect a failure with a first one of the brake circuits of a first axle of the vehicle, ii) lock or adjust an amount of engagement of a differential of the first axle of the vehicle to distribute brake force from a second one of the brake circuits of the first axle to one of the wheels at the first one of the brake circuits, and iii) control operation of the second one of the brake circuits to brake torque the one of the wheels at the first one of the brake circuits.

A system includes a reference speed module and a motor control module. The reference speed module is configured to determine a reference speed range based on a speed of a left wheel of a pair of front wheels or rear wheels of a vehicle and a speed of a right wheel of the pair of front wheels or rear wheels. The right wheel is decoupled from the left wheel. The motor control module is configured to control at least one of a first electric motor and a second electric motor based on the reference speed range. The first electric motor is connected to the left wheel. The second electric motor is connected to the right wheel.

A stator of a lock differential includes an inner lip recessed into a central opening. The inner lip is engaged with the bearing race to secure the stator to a gear housing of a lock-in differential. The stator holds the electromagnetic coil. The stator is shaped to avoid electromagnetic flux pinch points that may limit the magnitude of an electromagnetic force applied to a locking device of the lock differential.

The present invention discloses a thrust mechanism of a locking differential and a locking differential, comprising: an active thrust member and a driven thrust member, both of which are sleeved outside the differential case and distributed in sequence along the axial direction of the differential case, and the driven thrust member and the differential case are circumferentially driven; a push fork, which is rotatably mounted on the differential case around a rotation axis, and the push fork is provided with a pressing portion and a fitting portion on both sides of the rotation axis; an electromagnetic drive member, which is adapted to push the fitting portion to rotate relative to the rotation axis when energized, and the pressing portion is used to push the active thrust member to press the driven thrust member when the fitting portion rotates. According to the thrust mechanism of the locking differential of the embodiment of the present invention, when the push fork is subjected to force, it will push the active thrust member to move axially, thereby pushing the driven thrust member to achieve differential locking of the locking differential, so that the two wheels move at the same speed, prevent the single-side wheel of the vehicle from slipping, and help the vehicle escape.

The utility model provides a self-locking differential mechanism which comprises a differential mechanism shell. The differential mechanism end cover is fixedly connected to one end of the differential mechanism shell; the positioning assemblies are connected to the side wall of the end, close to the differential shell, of the differential end cover in a circular array mode. And the limiting assemblies are connected to the side wall, close to the differential end cover, of the differential shell in a circular array mode, and the limiting assemblies and the positioning assemblies are correspondingly arranged. The positioning assemblies on the side wall of the differential mechanism shell are matched with the limiting assemblies on the side wall of the differential mechanism end cover, so that the positions of the differential mechanism shell and the differential mechanism end cover can be limited, and the positions, needing to be installed, of the differential mechanism shell and the differential mechanism end cover are aligned; therefore, the influence on the assembly of the differential shell and the differential end cover when other tools are used for positioning can be avoided, and the assembly efficiency can be effectively improved.

A limited-slip differential can be an electric limited-slip differential with an electromagnet that actuates a clutch disc. The electric limited-slip differential can include an axle drive gear. The electromagnet must not rotate with the axle drive gear. The electric limited-slip differential can also include an actuating housing. The actuating housing can be attached to the axle drive gear. The electromagnet can cause an electromagnetic field to couple from an iron-containing housing of the electromagnet to the actuating housing. The electromagnetic field can axially displace the electromagnet relative to the actuating housing. The iron-containing housing and the actuating housing can include a chamfered edge through which the electromagnetic field couples.

The utility model belongs to the technical field of automobile transmission, and particularly relates to an electromagnetic self-locking differential mechanism sliding lock connecting structure which comprises a differential mechanism assembly, an electromagnetic driver, a sliding lock and a magnetism isolating push plate. The differential assembly comprises a shell, and the shell is provided with an end face and a mounting position extending outwards from the end face. The electromagnetic driver is arranged at the mounting position; the sliding lock is arranged in the shell, the sliding lock is provided with a plurality of connecting pieces, and the connecting pieces penetrate through the end face in a sliding mode and extend towards the electromagnetic driver; the magnetic isolation push plate is arranged between the electromagnetic driver and the sliding lock, the magnetic isolation push plate is attached to the electromagnetic driver but not connected with the electromagnetic driver, and the magnetic isolation push plate is provided with a limiting piece connected with the corresponding connecting piece and used for connecting the magnetic isolation push plate and the sliding lock to form a whole. The magnetism isolating push plate is used for isolating magnetism of the electromagnetic driver from being conducted to the sliding lock. And the magnetic isolation push plate has a magnetic isolation effect on the electromagnetic driver, so that the situation that the sliding lock adsorbs iron powder, scrap iron and the like due to the fact that magnetism is transmitted to the sliding lock is avoided.

The invention relates to a locking differential device (1) for a motor vehicle comprising: - a differential basket (2) in which at least three bevel gears (3, 4, 5, 5A) are arranged, - a first bevel gear (3), connectable to a first output shaft, - a second bevel gear (4), connectable to a second output shaft, - at least a third bevel gear (5, 5A), rotatably arranged about a bevel gear axis (6) of the locking differential device (1), - a bevel gear axle (6), arranged in a rotationally fixed manner with the differential basket (2), - wherein at least one third bevel gear (5, 5A) is engaged or meshes with the first and second bevel gears (3, 4), and - a coupling (7) for detachably connecting the differential basket (2) and the second bevel gear (4), - wherein the locking differential device (1) has a coolant guide device (14) which guides coolant from outside the differential basket (2) in a radial direction (R) inwards to the clutch (7) in order to cool it.

The present disclosure relates to an electronic locking differential mechanism with a locking detection mechanism for sensing and indicating a locked and unlocked state of the locking mechanism. The electronic locking differential mechanism comprises an electronic stator which, upon activation, establishes frictional contact with a grooved surface of a ramped collar, thereby rotating the ramped collar about an axis of the mechanism. The ramps of the ramped collar axially displace a plurality of pushrods, which move a locking collar and engage it with a locking gear, thereby placing the mechanism into a locked state.

Locking differential systems, vehicles and procedures are provided.An electric vehicle comprises an electric motor with a stator and a rotor, the rotor being configured to rotate about a rotor axis; a rotor shaft connected to the rotor for rotation about the rotor axis; a differential located within the rotor shaft; a first input shaft connected to the first side of the differential; a second input shaft connected to the second side of the differential; a locking system configured to selectively lock the rotation of the first input shaft with the rotation of the rotor shaft; a control system configured to determine when to lock the rotation of the first input shaft with the rotation of the rotor shaft; and an actuating system configured to actuate the locking system to lock the rotation of the first input shaft with the rotation of the rotor shaft.

The utility model provides a kind of hydraulic lock differential lock for tractor, including box, left bearing seat and right bearing seat are fixedly connected in the box, power transmission assembly is connected between the left bearing seat and right bearing seat, differential lock assembly is sleeved outside the power transmission assembly, the differential lock assembly includes differential cover and differential shell, a plurality of steel sheets are fixedly connected in the differential shell, pressure plate is movably connected in the differential cover, the pressure plate is connected with a plurality of friction plate, oil supply component is provided in the left bearing seat with differential cover. Pressure plate axial movement compacts friction plate and steel sheet, so that half shaft gear and differential shell synchronous rotation, realize differential lock locking function. Simple structure facilitates easy operation, can faster realize the combination and separation of differential lock, the oil supply component arrangement simple, simple processing, compact structure, suitable for mass production.

The lock-free limited slip differential comprises two groups of bidirectional single rotating devices and a main shaft or two half shafts; during turning, the middle driving wheel is swung to accelerate and rotate to push and swing the ratchets in the forward direction, the escapement teeth or the push teeth are separated from the middle driving wheel to exceed the ratchets, and the escapement teeth or the push teeth are driven to accelerate and rotate to form differential speed; although the suspended wheels idle, the landing wheels still keep normal driving force to push the vehicle to dig and advance; during sliding on a road, ratchets, escapement teeth or pushing teeth of the bidirectional single-rotating device are always engaged with the middle driving wheel in a full-time manner, so that the left wheel and the right wheel are synchronously driven at the same time, lock-free full-time driving and lock-free limited sliding are realized, the phenomenon of single-wheel flying rotation is avoided, human intervention is not needed, and full-time limited sliding differential and stable running are realized; the two-way single rotating device individually controls one wheel to stop rotating and rotates in situ, turns around or parks by taking the wheel which stops rotating as the center; or left wheels of the vehicle are controlled to advance and right wheels of the vehicle are controlled to retreat, and the vehicle rotates, turns around or parks around the midpoint of the vehicle body; technicians all research and develop differential locks, single-shaft differential and lock-free differential research is abandoned, and the existing lock-free limited slip differential does not need to turn around to research the differential locks.

A method for operating a motor vehicle (1) having at least one driven axle (3) with a locking differential (10a), where when the motor vehicle (1) is driving and the locking differential (10a) concerned is engaged on at least one driven axle (3), it is checked whether the motor vehicle is driving round a curve. If it is found that the motor vehicle is driving round a curve, the engaged locking differential (10a) is actuated to disengage it and it is checked whether the locking differential (10a) concerned has in fact been disengaged. If it is found that the locking differential (10a) concerned has not been disengaged, the wheel of the driven axle (3) concerned on the outside of the curve is braked.

A limited-slip differential can be an electrically operated limited-slip differential to which a bushing and an annular position sensor are fixed. The bushing and the annular position sensor can move axially relative to an actuating side housing of the electrically operated limited-slip differential. A target ring can be fixed to the actuating side housing. The target ring can be in a fixed axial position relative to a locking axle gear. The annular position sensor can be in a fixed axial position relative to a clutch disc. The annular position sensor can determine a relative axial position between itself and the target ring. This relative axial position can indicate the relative axial position between the clutch disc and the locking axle gear, thus indicating whether the electrically operated limited-slip differential is locked or unlocked.

A limited-slip differential switches between a locked and a non-locking configuration via an axially movable locking assembly. The locking assembly has pins that maintain a constant distance between a locking collar and a positioning collar. The positioning collar is coupled directly or indirectly to an iron frame to allow uniform axial movement. Excitation of an electromagnet attracts the frame, pulling the entire locking assembly into the locked configuration. A spring pushes the locking assembly back into the non-locking configuration when the excitation ceases.

The invention discloses an electromagnetic locking differential mechanism and a vehicle, the electromagnetic locking differential mechanism comprises a left differential shell, a right differential shell, a left half axle gear and a planet wheel, and further comprises a triggering mechanism and a locking mechanism, and the triggering mechanism and the locking mechanism are arranged on the two sides of the planet wheel in the axial direction of the left half axle gear; the triggering mechanism comprises a first electromagnet and a second electromagnet, the first electromagnet and the second electromagnet generate repelling acting force in the axial direction in the power-on state, and the first electromagnet is fixedly arranged; the locking mechanism comprises a top column and a combined fluted disc, the combined fluted disc is only arranged in the right differential shell in the axial direction in a sliding mode, the top column abuts against one end of a second electromagnet, and the second electromagnet can drive the top column to push the combined fluted disc to move in the axial direction and be locked with the left half axle gear in a clamped mode in the axial moving process. Through the repulsive force effect of the first electromagnet and the second electromagnet, the combined fluted disc is directly pushed to be combined with the left half axle gear through the jacking column, and compared with a sliding rail guide column, the response speed is higher.

An electromagnetic actuator for an electromagnetically actuated limited-slip differential is proposed. The electromagnetic actuator comprises an armature and a piston. The piston includes a contact area and a sensor area. The contact area is designed to make contact with the armature. The sensor area is designed to be sensed by a position sensor.

In a locking differential (1), a locking torque is set by the rotation of ramp rings (11, 12) with respect to one another. An elastic element (15) couples the ramp rings (11, 12) to one another and exerts a restoring force on the ramp rings (11, 12), which restoring force supports passive self-opening of the locking differential (1).