59 results about "Parking pawl" patented technology

A method for operating a locking actuator for a parking brake function (34), which comprises - a pawl wheel (38); - a parking pawl (46); - a parking pawl actuator (42) for displacing the parking pawl (46) from a basic position in the direction of the pawl wheel (38) with an actuation force; - a counter spring (54) which presses or pulls the parking pawl (46) in the direction of the basic position, comprising the steps of - rotating the pawl wheel (38) in a first direction of rotation (74) until the parking pawl (46) is free; - displacing the parking pawl (46) with a test force (78) which is smaller than the actuation force; - checking the rotational freedom of the pawl wheel (38).

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).

A continuously variable transmission includes, in a case: a drive pulley and a driven pulley each including a fixed-side pulley half and a movable-side pulley half configured to move to the fixed-side pulley half; a belt including a plurality of elements and a plurality of rings wound around the drive pulley and the driven pulley; a parking gear provided to the fixed-side pulley half of the driven pulley; and a parking pawl configured to be fitted to the parking gear, the continuously variable transmission transmitting a driving force to a wheel while changing a transmission ratio by changing groove widths of the drive pulley and the driven pulley, wherein the case includes an annular rib integrally molded with the case in a manner surrounding an outer periphery of the parking gear except for a position intersecting a swing trajectory of the parking pawl and a predetermined position.

The invention discloses a power switching system and an automobile. The power switching system comprises a motor shaft capable of being driven by a motor driving unit, a gear shifting cam ring capable of being driven by the motor shaft to rotate, the gear shifting cam ring comprises a first inclined face and a clutch cam ring, and the clutch cam ring comprises a second inclined face. The clutch cam ring is provided with a first inclined plane and a second inclined plane, the first inclined plane can be matched with the second inclined plane, when the gear shifting cam ring rotates in the first direction, the first inclined plane can apply acting force to the second inclined plane so that the clutch cam ring can move away from the gear shifting cam ring in the axial direction, and the parking cam can be driven by a motor shaft to rotate. The parking cam can drive the parking pawl to swing around the pawl shaft so as to lock the parking gear. According to the power switching system, the arrangement of the power switching system can be optimized.

Method for determining a state of a parking lock of a vehicle, in which a parking pawl (8) is automatically positively engaged in a parking lock gear (2) by an actuator (6), characterized in that it is determined as a function of a load-dependent actuator current whether the parking lock (1) is securely engaged or a tooth of the parking pawl (8) is on a tooth (5) of the parking lock gear (1).

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.

The invention belongs to the technical field of differential mechanisms, and particularly relates to a differential mechanism with a differential lock and a control method of the differential mechanism. A differential mechanism with a differential lock comprises a differential mechanism shell, and a parking pawl mechanism and a shifting fork locking mechanism are arranged on one side of the differential mechanism shell. When the motor rotates clockwise by a certain angle, the parking function is achieved, the motor rotates to drive the positioning shaft to rotate, the positioning shaft drives the execution assembly to rotate, and the pawl can be parked in a parking gear groove to achieve the parking function; when the motor anticlockwise rotates by a certain angle, the realization function is a differential lock function, the positioning shaft drives the execution assembly to rotate, and the locking sliding block and the half axle gear are combined, so that the limiting of the half axle gear and the differential shell is realized; the invention further provides a control method for the differential mechanism with the differential lock, and the control method helps an operator to use the differential mechanism.

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.

The present application provides a transmission parking device and a vehicle. In this transmission parking device, a pawl offset structure offsets the parking pawl to be separated from the parking gear; the parking rocker arm includes a fixed end and a free end, the parking rocker arm can rotate around the axis of the fixed end, and the first parking magnet is located on the movement path of the free end of the parking rocker arm; one end of the parking rod is connected to the free end, and the other end has a pawl driving part, and the pawl driving part is adjacent to the parking pawl; wherein, when the free end rotates around the axis of the fixed end towards the direction close to the first parking magnet until it is adsorbed by the first parking magnet, it drives the parking rod to move, so that the pawl driving part overcomes the biasing force of the pawl offset structure and pushes the parking pawl towards the direction close to the parking gear until the protruding part of the parking pawl engages with the tooth groove of the parking gear. This transmission parking device has a simple structure, low cost, and high parking reliability.

The invention envisages a parking lock system (100) for a vehicle. The parking lock system (100) comprises two parking pawls, namely a first parking pawl (102a) and a second parking pawl (102b). The strategic positioning of the two parking pawls (102a and 102b) is intended to reduce the recoil / rolling of the wheels after the vehicle is switched to the parking mode. The arrangement is such that only one locking element (104a or 104b) in the parking pawl (102a, 102b) can engage with the parking gear (110) when the parking lock system (100) is switched to the parking mode. In the assembled state, the distance between the locking elements (104a or 104b) is different from the distance between adjacent tooth gaps (110a) (and / or a plurality of tooth gaps thereof) on the parking gear (110). The advantage of the parking lock system (100) is that recoil on the wheel after parking is sharply reduced.

The utility model provides a parking device which comprises a parking gear, a parking pawl, a driving piece, an executing piece and a limiting piece. The limiting piece is arranged at the return stroke tail end of the executing piece and used for limiting the return stroke of the executing piece, the situation that an executing mechanism is damaged or fails due to stress springback is prevented, the limiting piece can be made of alloy structural steel, the mechanical strength of the parking device can be improved, and springback energy can be effectively absorbed; a push support and a drive rod in the push rod mechanism are designed to be of an integrated structure, assembly is easy, the integration degree is higher, and the risk of assembly looseness caused by stress in the using process is reduced; according to the parking device, the double rollers are installed on the pushing support through the fixing pins, the situation that the fixing pins rotate, loosen and the like under the stress condition is effectively prevented by arranging the anti-rotation limiting structures, the service life of the parking device is further prolonged, and the reliability of the parking device is further improved.

Provided is a transmission device capable of extracting air from a support part while maintaining the strength of the support part of a pawl shaft. According to one aspect of the present disclosure, a transmission device is provided with a transmission mechanism, a parking lock mechanism, and a gearbox. The parking lock mechanism has a pawl shaft and a parking pawl capable of swinging about the pawl shaft. The gear box includes a first support portion that supports a first end portion of the pawl shaft, and a second support portion that supports a second end portion of the pawl shaft, and the second support portion has a greater rigidity with respect to a lock load received from the parking pawl than the first support portion. The pawl shaft has a communication hole extending from a first end portion to a second end portion. The second support portion has an insertion opening, a bottom surface, and a groove extending from the bottom surface to the insertion opening.

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.

The present invention discloses a transmission engagement control system. The transmission parking mechanism is hydraulically actuated. Specifically, the controller releases the parking pawl by controlling the engagement of a specific shift element under increased line pressure. The process of converting from the parking gear state to the forward gear or reverse gear state may include multiple sequential steps. In order to reduce the delay between the forward gear or reverse gear selected by the driver and the completion of the engagement, it is beneficial to increase the line pressure in response to the depression of the brake pedal before the shift lever moves. In order to limit the negative impact of the increased line pressure on fuel economy, if the driver does not move the shift lever immediately after the brake pedal is depressed, the line pressure is reduced again.

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.

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 utility model relates to a parking system for an electric automobile, which comprises a parking ratchet wheel connected to an intermediate shaft and provided with a tooth socket on the side surface; one end of the parking pawl is hinged to the interior of the speed reducer, a limiting part is formed at the other end of the parking pawl, and a containing groove is formed in the side, away from the limiting part, of the parking pawl; the linkage assembly comprises a push rod and a pushing piece, the pushing piece is arranged on the side, away from the parking ratchet wheel, of the parking pawl, and the pushing piece is provided with a matching part; one end of the push rod is connected to the pushing piece; the driving assembly is connected with the other end of the push rod and drives the push piece to move through the push rod; according to the electric automobile, the parking pawl and the parking ratchet wheel are matched to lock the middle shaft, compared with an input shaft, the rotating speed of the middle shaft is low, when the parking pawl and the parking ratchet wheel are combined and separated, the speed of the parking ratchet wheel is easier to control, and direct parking and locking can be achieved under the condition that an automobile slides.

The present invention relates to a parking lock system (1) for a motor vehicle transmission, comprising a locking wheel (11) connected to a transmission element, a parking pawl (5) with a locking finger (6) designed to engage in a recess (10) of the locking wheel (11), a sliding fork head mounted in a housing (20) comprising side walls (22) connected by an edge (21). A device (30) for detecting the speed of the locking wheel (11) and / or the position of the parking pawl (5) and / or the position of the sliding fork head (8) is mounted on the housing (20). Figure for abstract: Figure 1

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 continuously variable transmission includes, in a case: a drive pulley and a driven pulley each including a fixed-side pulley half and a movable-side pulley half configured to move axially relative to the fixed-side pulley half; a belt including a plurality of elements and a plurality of rings wound around the drive pulley and the driven pulley; a parking gear provided to the fixed-side pulley half of the driven pulley; a parking pawl configured to be fitted to the parking gear; a parking rod configured to swing the parking pawl; and a guide member configured to guide the parking rod, the continuously variable transmission transmitting a driving force a wheel while changing a transmission ratio by changing groove widths of the drive pulley and the driven pulley, wherein the case includes an auxiliary rib having a gap from the drive pulley equal to or smaller than a predetermined width.

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.

[Problem] To improve reliability of a park lock mechanism in a drum type transmission of an electric shift type with a simple constitution. [Solution] A drum type transmission includes a park lock mechanism having a park pawl engaged with or disengaged from a park concave-convex portion of a park gear relatively non-rotatably disposed on a transmission shaft, a park pawl operation member for engaging the park pawl with the park concave-convex portion when a drum member is in a park position and releasing the engagement when the drum member is out of the park position, and an assist cam for assisting a movement of the park pawl in a direction in which the park pawl is released from the park concave-convex portion when the drum member is rotated from the park position toward a transmission position or a neutral position. The assist cam is disposed at one end portion of an assist operation shaft that is rotated by power branched from a shift operation gear train.

The invention 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 the parking plate is 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 through 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.