33 results about "Parking pawl" patented technology

A parking pawl module (10) comprises: a first sun gear (230a); a first actuator (100) configured to actuate the first sun gear (230a); a transmission (200) comprising: a transmission housing (210); at least one transmission gear carrier (220, 220a, 220b) received by the transmission housing (210), wherein the at least one transmission gear carrier (220, 220a, 220b) has a first carrier side (221a) and a second carrier side (221b); at least a plurality of planet gears (222, 222a, 222b) which are supported on the first support side (221a) of the at least one gear carrier (220, 220a, 220b), wherein the at least plurality of planet gears (222, 222a, 222b) are in mesh with the first sun gear (230a); and an actuating element (240, 240c) which is connected to the transmission (200);a toggle lever (310) defining a lever opening (254) configured to receive the actuating element (240, 240c) and to allow movement of the actuating element (240, 240c) within the lever opening (254); and a shaft (314) attached to the toggle lever (310); wherein the first actuating member (100) controls a rotary movement of the at least one gear carrier (220, 220a, 220b), the plurality of planet gears (222, 222a, 222b), and the actuating element (240, 240c), and a linear movement of the toggle lever (310) and the shaft (314).

This invention discloses a segmented engagement control method for a parking pawl in an electromechanical brake, applicable to a system including a motor, transmission mechanism, brake, ratchet fixed on the motor shaft, pawl, electromagnet, and controller. The method first drives the motor to rotate forward until the clamping force of the brake reaches a target value. Then, it drives the electromagnet to eject the pawl. Next, it drives the motor to rotate in the reverse direction at a preset backlash-eliminating target speed to reduce the gap between the pawl and ratchet, while maintaining the clamping force above a safe lower limit. During the reverse rotation, locking contact is determined based on a combined criterion of current change rate and speed resistance. After determination, a restricted reverse drive is maintained for a preset guiding time to allow the ratchet to slide into the tooth groove along the pawl's working surface. Then, the current is gradually reduced to near zero according to a preset unloading trajectory. When both the motor angular velocity and current are below the threshold and remain below for a preset time, mechanical locking is determined to be complete, and the motor drive is disengaged.

This more reliably prevents the parking pole from contacting the parking gear while the vehicle is in motion. [Solution] A parking lock device comprising a movable member that moves between a first position and a second position according to the shift range, a parking gear, a parking pawl, and a regulating member. The parking pawl moves in conjunction with the movable member and is positioned in a non-engaging position where it does not engage with the parking gear when the movable member is in the first position, and in an engaged position where it engages with the parking gear when the movable member is in the second position. The regulating member moves in conjunction with the movable member and is positioned in a regulating position where it restricts the parking pawl from moving from the non-engaging position to the engaged position when the movable member is in the first position, and retracts from the regulating position when the movable member moves from the first position to the second position.

The utility model discloses an integrated braking and parking device which comprises a pedal plate and a braking assembly in transmission connection with the pedal plate, and further comprises a parking plate in transmission connection with the pedal plate and provided with a braking groove of a one-way limiting structure. The parking pawl is connected with the fixing component through an elastic piece, and the elastic piece is used for forcing the parking pawl to be meshed with the braking groove so as to prevent the parking plate from returning; an energy storage element is arranged between the parking pin shaft and the parking pawl, and the energy storage element stores or releases energy when the distance between the parking pawl and the parking pin shaft changes; the guide structure is fixed on the parking plate and comprises a separation limiting part and a guide surface; braking, parking and unlocking are achieved through different strokes of the pedal. The vehicle brake system has the advantages that the problems that braking and parking of an existing vehicle brake system need to be controlled by two parts, and operability is poor can be effectively solved. The operation process of the driver is greatly simplified, the operation complexity is reduced, and the convenience in the driving process is improved.

An electromechanical brake system includes: an actuator assembly having an electric motor configured to generate torque for moving a brake pad assembly to apply or release a brake and a driven pulley configured to transmit the torque generated from the electric motor; a parking brake assembly having a parking pawl configured to engage against the driven pulley in a parking brake applied state of a vehicle and a pawl actuator configured to move the parking pawl to engage against the driven pulley; and an electronic control unit (ECU) that is configured to control the electric motor by determining whether the electric motor should be controlled to apply the torque in a direction of releasing the brake to ensure a stable engagement between the parking pawl and the driven pulley during the parking brake applied state of the vehicle using a change in motor rotation of the electric motor.

The invention discloses a parking mechanism which comprises a parking motor, a lead screw shaft, a lead screw nut, a parking cam, an elastic piece, a pawl shaft, a parking pawl and a parking ratchet wheel. The parking motor is connected with the lead screw shaft so as to drive the lead screw shaft to rotate forwards and backwards. The lead screw shaft is sequentially sleeved with a lead screw nut, a parking cam and an elastic piece. The parking pawl is rotatably installed between the lead screw shaft and the parking ratchet wheel through a pawl shaft, and the lower end of the parking pawl is provided with a force application part extending towards the lead screw shaft so that the elastic piece can be extruded between the parking cam and the force application part. The upper end of the parking pawl is provided with a pawl part extending towards the parking ratchet wheel, and the other side, away from the pawl part, of the upper end of the parking pawl is provided with a pawl jacking part making contact with the parking cam. And a convex part and a concave part are arranged on the parking cam. The device has the advantages of being simple and compact in structure, convenient and flexible to operate, small in occupied space, easy to arrange and maintain and low in manufacturing and maintenance cost.

The purpose of this invention is to provide a technique for appropriately suppressing the ratchet effect when shifting to Park (P) gear, regardless of individual differences between vehicles. The solution of this invention is to determine whether a ratchet effect is present when performing parking control to shift to P gear. If a ratchet effect is detected (the determination in S3 is "yes"), parking control is stopped in S5, and the parking pawl moves to a non-parking position where it is disengaged from the parking gear. Therefore, regardless of individual differences between vehicles, such as dimensional errors in the parking pawl and parking gear, and accuracy errors in the vehicle speed sensor, the ratchet effect of the electric parking device can be appropriately suppressed.

The utility model relates to the field of brake calipers, and discloses a parking locking mechanism suitable for electronic mechanical calipers, which comprises a parking ratchet wheel, an electromagnet assembly, a parking pawl and a parking pawl return torsion spring. The parking ratchet wheel is in interference fit with an output shaft of the brake motor and is driven by the brake motor to rotate; the electromagnet assembly comprises a two-way self-holding electromagnet and a magnetic push rod, the two-way self-holding electromagnet drives the magnetic push rod to stretch out or retract through forward or reverse electrification, the output end of the magnetic push rod is fixedly connected with a parking spring seat, and the parking spring seat is sleeved with a parking compression spring; a parking fork for pressing the parking compression spring is arranged at one end of the parking pawl, a pawl hook meshed with the parking ratchet wheel is arranged at the other end of the parking pawl, and the parking pawl can rotate around a parking pawl rotating shaft; the parking fork is elastically connected with the parking compression spring, and the parking pawl is sleeved with the parking pawl return torsion spring. The parking pawl is always meshed with the ratchet wheel when the magnetic push rod extends out, and the parking re-clamping process is simple and fast.

A park securement system includes a park pawl system and a controller. The park pawl system has a park pawl, an actuator, a park gear and a sensor. The park pawl has a pawl engagement member, a park tooth, and a magnet. The actuator is configured to rotate a cam into engagement with the park engagement member that imparts rotational motion onto the park pawl. The sensor is configured to sense the magnet and communicate a signal indicative of a position of the park pawl. The controller is configured to: command the park pawl to a neutral resting state; record a park pawl value at the neutral resting state; determine a park pawl angle for additional regions based on the recorded park pawl value; and implement the determined park pawl angle for additional regions when one of engaging and disengaging the park pawl on subsequent cycle.

The present disclosure relates to a system and method to stop precession of a flywheel enclosure used in a gyroscopic roll stabilizer in aquatic vessels. The system and method includes the use of a pawl safety latch capable of interlocking connection with a gimbal shaft to prevent rotation of the gimbal shaft and prevent precession of the corresponding flywheel enclosure.

The invention relates to a method for operating a locking actuator (34) for a parking brake function, comprising: a ratchet wheel (38); -a parking pawl (46); -a parking pawl actuator (42) for displacing the parking pawl (46) from the reference position in the direction of the ratchet (38) by means of an actuating force; -a reverse spring (54) which urges or pulls the parking pawl (46) in the direction of the reference position, with the following steps:-rotating the ratchet wheel (38) in a first direction of rotation (74) until the parking pawl (46) is free; displacing the parking pawl (46) with a checking force (78) less than the actuating force; checking the rotational degree of freedom of the ratchet (38).

The invention discloses a system and method for operating a lubrication system having a brake-actuated valve. A lubrication system for a vehicle includes a heat exchanger having a lubricant inlet and a lubricant outlet, wherein the lubricant outlet has a first outlet branch and a second outlet branch. The lubrication system also includes a stator lubrication circuit, a rotor lubrication circuit, and a gearbox lubrication circuit fluidly connected between the lubricant inlet and the first outlet branch. The gearbox, the stator and the rotor lubrication circuit are fluidly connected in parallel with each other. The system also includes a parking actuator assembly having a parking pawl configured to move between a parking position and a release position allowing driveline gear movement, and a parking actuation valve configured to move when in the parking position into a first position that prevents lubricant flow through the second outlet branch, and to move when in the release position into a second position that prevents lubricant flow through the second outlet branch. And when in the release position moves into a second position allowing lubricant to flow through the second outlet branch.

A securing technique for a vehicle for Internet of Vehicles (V2X) power generation includes receiving a requested state of a transmission from a transmission shifter, the requested state being a park state in which a park pawl is engaged and one or more non-park states in which the park pawl is disengaged, detecting a fob associated with the vehicle, and transmitting the detected fob to the transmission shifter. A lock request associated with a power generation mode in which a powertrain of the vehicle is configured to operate in a generator mode and output power is detected by a user interface device, and in response to the lock request, an actuator is commanded to physically lock the shifter when the transmission is in a park state and the park pawl is engaged, and the power generation mode is configured to operate in the generator mode and output power. When the fob is not detected, the parking pawl is maintained engaged regardless of whether the shifter requests a non-parking state.

A parking lock device may include: a movable member moving between a first position and a second position according to a shift selector position; a parking gear; a parking pawl; and a restriction member. The pawl moves conjointly with the movable member such that the pawl is in a non-engaged position of not engaging with the gear when the movable member is in the first position, and is in an engaged position of engaging with the gear when the movable member is in the second position. The restriction member moves conjointly with the movable member such that the restriction member is positioned in a position of restricting the pawl from moving from the non-engaged position to the engaged position when the movable member is in the first position, and the restriction member retreats from the restriction position when the movable member moves from the first position to the second position.

This invention provides a vehicle control device that avoids adverse conditions caused by overheating of the drive motor and does not increase the cost of the control structure, and can suppress rollback when parking on an incline. The vehicle control device includes: a drive motor for driving the vehicle; a drive shaft connected to the drive motor; a parking gear fixed to the drive shaft; a parking pawl engaged with the parking gear; an actuator that, through operation of a parking switch, moves the parking pawl to a locked position and a unlocked position, locking the drive shaft; a slope detection component for detecting the vehicle's slope; a rotation angle detection component for detecting the rotation angle of the drive motor; and a motor angle control component that, after the actuator operates, rotates the drive motor by a predetermined angle, this predetermined angle corresponding to the slope detected by the slope detection component.

An all-terrain vehicle has a prime mover assembly which includes a tall and narrow gearbox. The collection of shafts in the gearbox include a (highest) input shaft, a (lowest) front output shaft, and a (forwardmost) reverse shaft, as well as a (rearwardmost) rear output gear. A shaft spacing aspect ratio of the vertical shaft spacing distance to the horizontal shaft spacing distance is greater than or equal to 0.85 and less than or equal to 1.4. A parking pawl control linkage has a pawl control wheel, with a park lobe, rotationally mounted about an axis of the shifting shaft used for gear shifting. Rotation of the shifting shaft into park causes rotation of the pawl control wheel such that the park lobe pushes on the parking pawl to move the parking pawl from the disengaged position to the engaged position.

To enable detection of damage to parking poles. [Solution] The vehicle includes a parking gear, a parking pawl attached to the first pivot shaft and configured to rotate between a first position in which it engages with the parking gear and a second position in which it disengages from the parking gear, a rod configured to move in the axial direction, a cam attached to the rod that rotates the parking pawl from the second position to the first position in accordance with the axial movement of the rod, a stopper receiver provided on the rod, and a stopper attached to the second pivot shaft and configured to rotate between a third position in which it contacts the parking pawl but cannot contact the stopper receiver and a fourth position in which it can contact the stopper receiver. If the parking pawl is damaged, the stopper rotates from the third position to the fourth position, and the stopper receiver contacts the stopper rotated to the fourth position, thereby restricting the axial movement of the rod.

The application discloses a parking brake mechanism for a pure electric vehicle speed reducer and relates to the technical field of parking devices in electric vehicle power transmission systems.The parking brake mechanism comprises a brake ratchet, a parking spring support, a parking brake shaft, a cam sector plate and a parking pawl shaft, the parking spring support is fixedly installed on the parking brake shaft, the parking brake mechanism can realize various parking brake states by using the difference of spring force, the brake mechanism can be converted from a pre-brake state to a brake state through compression of a buffer spring, the brake limiting part can fully absorb the vibration caused by the impact of the parking pawl when the parking pawl is clamped in the brake ratchet tooth groove, the buffer can also be used to protect the brake ratchet tooth groove, and the brake limiting part can effectively avoid wear and tear and the click sound between the pawl and the tooth groove when the brake is released.

The utility model discloses a parking pawl production tool which comprises an upper forming mechanism and a lower forming mechanism. The upper forming mechanism comprises an upper forming template and a blanking punch, the blanking punch comprises a base and a punch head, the base is in threaded connection with the upper forming template, a central screw hole and surrounding screw holes are formed in the base, the axis of the central screw hole coincides with the central axis of the punch head, and a plurality of surrounding screw holes are distributed around the central screw hole; and the surrounding screw holes are symmetrically distributed relative to the punch, so that the base is uniformly stressed, the stress concentration of the base is avoided, and the problem of punching breakage during punching of the thick plate is prevented. The lower forming mechanism comprises a lower forming template, a female die inlet block and an ejection block, a female die through groove is formed in the lower forming template, the female die inlet block is assembled in the female die through groove, the female die inlet block is provided with an ejection through groove which is the same as the pawl in outer contour shape and size, the ejection block is assembled in the ejection through groove, the outer contour of the lower forming template is circular, and the ejection block is assembled in the ejection through groove. And the punched thick plate can be conveniently taken out.

The utility model provides a brake-by-wire electronic mechanical caliper device. The brake-by-wire electronic mechanical caliper device comprises a motor, a gear assembly, a thrust conversion assembly, a friction plate and a parking assembly. The motor is provided with an output shaft which is provided with a ratchet wheel and a motor gear. The gear assembly is meshed with a motor gear; the thrust conversion assembly is connected with the gear assembly, and the thrust conversion assembly receives rotating power and converts the rotating power into axial thrust; the friction plate is located on the downstream side of the thrust conversion assembly. The parking assembly is located on one side of the ratchet wheel and provided with an electromagnet, a telescopic push rod and a pawl which are sequentially connected, and the pawl is detachably matched with the ratchet wheel. The internal circulation ball screw, horizontal gear transmission and planetary gear transmission structures are adopted, the structure of a product is simplified, and space utilization is reasonable; in addition, parking is conducted in the mode of the electromagnet and the ratchet wheel, the pawl is limited through the pawl groove in the caliper body, when the electromagnet pushes the pawl, the pawl slides in the groove, the structure is simple, the product size is small, and parking is reliable.

A parking mechanism (8) comprising: a parking gear (10) which rotates together with a wheel of a vehicle around a main axis (J1), a parking pawl (20) which has an engagement section (25) which faces a tooth section (11) of the parking gear (10) and which is rotatable about a first axis of rotation (AX1) parallel to the main axis (J1), a cam rod (30) which extends along a first direction which is perpendicular to the main axis (J1) and is actuated along the first direction, a cam (35) which is attached to the cam rod (30) is in contact with a cam contact section (23) of the parking pawl (20) and moves along the first direction with the actuation of the cam rod (30) to rotate the parking pawl (20) about the first axis of rotation (AX1) and to move the engagement section (25) in the direction of the parking gear (10), a U-shaped sleeve (80) which is open in the direction of the parking lock latch (20) and supports the cam (35), and a pawl stopper (85) which comes into contact with a stopper contact section (24) of the parking pawl (20) to limit the movement of the parking pawl (20) towards the cam rod (30), wherein the cam rod (30) is inserted into the sleeve (80), and the pawl stopper (85) is arranged between the parking pawl (20) and the cam rod (30), wherein the parking mechanism (8) further comprises a housing (6) which contains the sleeve (80) and the pawl stopper (85), wherein the pawl stopper (85) is attached to an inner surface of the housing (6), wherein the sleeve (80) is fastened to the inner surface of the housing (6) by a single fastening screw (84) which extends parallel to the main axis (J1), and the sleeve (80) comes into contact with the pawl stopper (85) in a direction of rotation when the fastening screw (84) is tightened.

The invention relates to a parking lock mechanism for a motor vehicle, the motor vehicle having a drive shaft (1) which is provided for the mechanical transmission of power to at least one drive wheel and which has at least one locking region (2) and is provided with a parking pawl (3) for the selective formation of a form-fit connection with the locking region (2), the parking lock mechanism having a locking mode in which the parking pawl (3) is moved into a locking position and forms a form-fit connection with the locking region (2) there, and a driving mode in which the parking pawl (3) is moved into a driving position in which the parking pawl does not form a connection with the locking region (2), the parking pawl (3) being pivotable about a pawl axis (4) from the locking position into the driving position and being provided with a pawl spring device (5) which pre-tensions the parking pawl (3) into the driving position and with a pawl operating device which has a pawl actuator (6) with a pawl actuator shaft (7) and has a pawl cone (8), the pawl cone (8) being movable along a cone axis (9) by means of the pawl actuator (6), the cone axis (9) being oriented parallel to the pawl axis, and the pawl cone being movable along the cone axis (9) between a cone driving position and a cone locking position, and the parking pawl (3) being pressed into the locking position against the pre-tension of the pawl spring device (5) by the pawl cone (8) in the cone locking position, and in order to move the pawl cone (8) along the cone axis (9) there being provided a locking cone lever (10) which is freely rotatable by means of the pawl actuator shaft (7).

A park pawl motor override system and corresponding method of use includes utilizing a park pawl override tool to selectively engage and / or disengage a park pawl mechanism under certain vehicle conditions including loss of 12V power and / or loss of vehicle serial communication; disengaging a 12V power supply of the vehicle from a wiring harness; coupling the override tool to a vehicle breakout interface, where the vehicle includes a dedicated, direct communication and power connection between the breakout interface and the park pawl mechanism; coupling an off-vehicle 12V power supply to the override tool; and operating the override tool to provide power and control signals to the park pawl mechanism to control the park pawl mechanism to selectively move to a disengaged position and / or to an engaged position while the vehicle is under the loss of 12V power and / or loss of vehicle serial communication with the park pawl mechanism.

The invention discloses a magnetic drive type parking mechanism applied to EMB calipers. Comprising a gear, a parking pawl, a parking magnet assembly and a mounting module, the parking pawl and the parking magnet assembly are installed on the installation module, the parking magnet assembly is connected with or internally provided with an electromagnetic driving source, one end of the parking pawl serves as a meshing end to be connected with the output end of the parking magnet assembly, and the other end of the parking pawl serves as an unlocking end to be meshed with the gear to form a ratchet wheel and ratchet pair. According to the invention, a traditional self-locking nut and screw structure or a complex bidirectional electromagnet scheme can be replaced, the structure is simple, the response speed is high, the cost is low, the reliability is high, and the space is optimized.

A parking device of a vehicle is disclosed. The parking device comprises a parking gear, a position limiting member, a parking pawl, a push rod assembly, a swinging drive member and a position restoring member. The position limiting member is spaced from a circumferential side surface of the parking gear. The parking pawl is provided in the vehicle in a way that it is rotatable, and an engagement end of the parking pawl is located between the position limiting member and the parking gear, and is rotatable to a parking position where it is engaged with the parking gear. The push rod is provided with a pushing part that can abut between the parking pawl and the position limiting member. The push block is slidably provided on the push rod. An elastic member is connected between the pushing part and the push block. A swinging drive member can swing back and forth. A swinging end of the swinging drive member can be hinged to the push block to push or pull, via the push block, the pushing part to move by means of the elastic member. By pushing the pushing part the parking pawl can be driven to rotate so that the engagement end is rotated to the parking position. The position restoring member can provide a position restoring force to the parking pawl, so that the engagement end can be disengaged from the parking position after the pushing part is pulled.

An electromechanical brake (EMB) system is provided. The EMB system includes: an actuator assembly including an electric motor configured to generate torque for moving a brake pad assembly to apply or release a brake and a driven pulley configured to transmit the torque generated from the electric motor; a parking brake assembly including a parking pawl configured to engage against the driven pulley in a parking brake applied state of a vehicle and a pawl actuator configured to move the parking pawl to engage against the driven pulley; and an electronic control unit (ECU) configured to heat up the parking brake assembly in response to obtaining a parking brake apply request under one or more below freezing ambient temperature conditions.

The application discloses a parking ratchet, comprising: a main ratchet plate, a first spline for connecting a main shaft is arranged in the middle position of the main ratchet plate, a plurality of first clamping holes for clamping with a pawl are symmetrically arranged on the outer wall of the first ratchet plate; two side ratchet plates are respectively embedded on the two end surfaces of the main ratchet plate, and a second spline is arranged on each side ratchet plate corresponding to the first spline, and a plurality of second clamping holes are arranged on each side ratchet plate corresponding to the plurality of first clamping holes; the hardness of the two side ratchet plates is greater than that of the main ratchet plate. The application realizes the application of different metal materials in the parking ratchet by the main ratchet plate and the two side ratchet plates, greatly improves the physical performance of the parking ratchet, and has the beneficial effects of enhancing wear resistance, improving bearing capacity, improving fatigue strength and improving safety.

A lubrication system for a vehicle includes a heat exchanger having a lubricant inlet and a lubricant outlet with the lubricant outlet having a first outlet branch and a second outlet branch. The lubrication system also includes a stator lubrication circuit, a rotor lubrication circuit, and a gearbox lubrication circuit fluidly connected between the lubricant inlet and the first outlet branch. The gearbox, stator, and rotor lubrication circuits are connected fluidly in parallel with each other. The system also includes a park actuator assembly having a parking pawl configured to move between a parking position and a release position allowing movement of the drivetrain gear and a park actuated valve configured to move into a first position blocking lubricant flow through the second outlet branch when in the parking position and into a second position allowing lubricant flow through the second outlet branch when in the release position.

The invention discloses a vehicle parking device and a vehicle, and belongs to the technical field of vehicle parking. The vehicle parking device comprises a brake motor output shaft. The vehicle parking device further comprises a parking ratchet wheel, and the parking ratchet wheel is in transmission connection with an output shaft of the brake motor. The vehicle parking device further comprises a parking pawl, and the parking pawl is movably arranged. The vehicle parking device further comprises a parking cam, and the parking cam is in transmission fit with the parking pawl. Wherein the parking cam comprises a stroke extending part, and the outer contour line of the stroke extending part is a sine acceleration curve; along with the rotation of the parking cam, the pushing stroke part is used for driving the parking pawl to move towards the parking ratchet wheel, so that the parking pawl is clamped with the parking ratchet wheel to limit the rotation of the parking ratchet wheel. In this way, noise generated in the working process of the vehicle parking device can be eliminated as much as possible.

The invention relates to a vehicle drivetrain with an electric motor (EM) that drives at least one vehicle wheel, and with a parking pawl (PS) whose parking pawl gear (3) is arranged on an output shaft (1) of the vehicle drivetrain in a torque-transmitting manner, and whose pawl (5) is in a locked position in tooth engagement with a tooth gap (L1 to L7) of the parking pawl gear (3). According to the invention, a test unit (15) is associated with the electric motor (EM) by means of which a gap detection (Δt) is performed in a learning routine. L ) is feasible, in which the test unit (15) has a gap rotor rotation angle position (α) corresponding to the tooth gap (L1 to L7). L ) of the electric machine rotor (13) determined.