2234results about "Mechanical steering gears" patented technology

A selectively pivotable mid-gate for a vehicle includes a first mid-gate member pivotally mounted to the vehicle through a hinge member and a second mid-gate member is pivotally mounted to the vehicle and the first mid-gate member through the hinge member. A latch system is operatively connected to the first mid-gate member and the second mid-gate member. The latch system is selectively operable to release the first mid-gate member to rotate in a first direction and to release the first mid-gate member and the second mid-gate member to rotate in a second direction that is opposite the first direction.

Methods and apparatus to determine rack force are disclosed. An example apparatus includes a rack to couple to a steering knuckle of a vehicle, a ball nut engaged with the rack, a first ring gear coupled to the ball nut, a first pinion fixed to a motor, the first pinion engaged with the first ring gear, the motor to rotate the ball nut to move the rack, a motor encoder to detect a rotation of the first pinion, a second ring gear coupled to the ball nut, and a sensor fixed to a second pinion, the second pinion engaged with the second ring gear, the second pinion to rotate as the second ring gear rotates, the sensor to detect a rotation of the second pinion, the rotation of the second pinion and the rotation of the first pinion corresponding to a force on the rack.

An electric power steering assembly comprises a housing with a cylindrical section, wherein an inner wall of the cylindrical section defines a first groove and a second groove extending in an axial direction, the first and second grooves having inwardly tapered walls. A ball screw is arranged in the housing, extending in the axial direction and defining a radially extending through-hole with a first and a second end. A ball nut is arranged in the housing and surrounds the ball screw and is configured to rotate with respect to the housing. A first anti-rotation pin is located in the first end of the through-hole, a second anti-rotation pin is located in the second end of the through-hole, and a spring is arranged between the anti-rotation pins.The spring is configured to pre-tension the first and second anti-rotation pins in a radially outward direction towards the first and second grooves, respectively.

A steering system for use in turning steerable vehicle wheels includes a steering wheel and a housing. A pinion is in the housing and connected to the steering wheel via a shaft such that rotation of the steering wheel urges the pinion to rotate about an axis relative to the housing. The pinion has a recess. An elastic element is compressed in the recess between the pinion and the shaft. The elastic element applies an axial force to the pinion that dampens axial movements of the pinion relative to the housing.

An independent steering apparatus includes a wheel of a vehicle, a knuckle integrally fixed to the wheel, a steering driving part configured to generate steering driving force, a deceleration part connected to an output shaft of the steering driving part and configured to transmit the steering driving force, and a deceleration part housing having the deceleration part located therein. In particular, the steering driving part is integrally fixed to the deceleration part housing, and the deceleration part housing is integrally fixed to the knuckle. The steering driving force generated by the steering driving part is transmitted to the deceleration part housing through the deceleration part, thereby rotating the knuckle.

A foldable vehicle may include a chassis comprising a static support, a dynamic chassis frame that includes at least two substantially opposite frame parts and a folding mechanism for decreasing or increasing a distance between the at least two substantially opposite frame parts across a lateral axis of the vehicle between a folded state and an unfolded state; and a controller to control the folding mechanism.

A steering system for use in turning steerable vehicle wheels includes a steering wheel and a housing. A pinion is in the housing and connected to the steering wheel such that rotation of the steering wheel results in rotation of the pinion about a rotational axis relative to the housing. A first bearing rotatably supports a first end of the pinon in the housing. A second bearing rotatably supports a second end of the pinon in the housing. A worm wheel is meshed with the pinion in the housing and connected to steerable vehicle wheels. The worm wheel transfers torque from the steering wheel to the steerable vehicle wheels to effect turning of the steerable vehicle wheels. A pressing device applies a pressing force to the second end of the pinion via the second bearing to urge the pinion toward the worm wheel.

The invention relates to a chassis structure of a vehicle based on corner modules and a control system, the chassis structure of the vehicle comprises the corner modules corresponding to four wheels of the vehicle respectively, in each corner module, a wheel side motor driving assembly is used for directly driving the wheel corresponding to the corner module, and the wheel side motor driving assembly is used for directly driving the wheel corresponding to the corner module. The 90-degree two-way steering execution system is used for driving wheels corresponding to the angle module to realize positive and negative 90-degree steering; the wheel side motor driving assembly and the 90-degree bidirectional steering execution system are separately arranged; the suspension and supporting structure is used for keeping geometric stability of the suspension when the wheels corresponding to the angle modules steer and buffering road impact. The electronic mechanical braking unit is used for achieving braking of wheels corresponding to the angle modules. In this way, synchronous control over steering, driving, vibration reduction and braking of the vehicle in different running modes can be achieved through cooperative work of the angle modules in the wheels of the vehicle, and a vehicle chassis has higher flexibility and more scene adaptability in the running process of the vehicle.

The steering angle module comprises a wheel mechanism, the wheel mechanism comprises a hub motor and a wheel assembly in transmission connection with the hub motor, the hub motor comprises a stator and a rotor arranged on the periphery of the stator, and the wheel assembly is fixedly connected with the rotor; the brake mechanism comprises an annular brake disc fixedly connected with the rotor and a brake caliper fixedly connected with the stator; the steering mechanism comprises a steering knuckle and a steering assembly, the lower portion of the steering knuckle is fixed to the stator, the upper end of the steering knuckle extends to the axial outer side of the wheel assembly and is in transmission connection with the steering assembly, and an included angle is formed between the steering axis of the steering assembly and the vertical direction; the suspension mechanism comprises an upper swing arm and a lower swing arm, one end of the upper swing arm is rotationally connected with the frame, the other end of the upper swing arm is spherically hinged to the upper end of the steering assembly, and one end of the lower swing arm is rotationally connected with the frame, and the other end of the lower swing arm is spherically hinged to the steering knuckle. According to the steering angle module and the steering system with the steering angle module, the flexibility of the vehicle can be improved, and the high-speed steering running stability and safety of the vehicle are improved.

The invention discloses an angle locking mechanism of a steering system. The angle locking mechanism comprises a shell, a driving wheel, a driven wheel, a sliding block and a limiting feature. The driven wheel is provided with a pinion and a cam, the driving wheel is provided with an inner gear, and the inner gear and the pinion form a gear pair; the driving wheel is driven by an external driving shaft to rotate around the first rotating shaft; the driven wheel is driven by the driving wheel to rotate around the second rotating shaft; the cam is driven by the pinion to rotate around the second rotating shaft, and the cam and the driven wheel have the same angular velocity when rotating; the limiting feature is driven by the driving wheel to rotate around the first rotating shaft, and the limiting feature and the driving wheel have the same angular velocity during rotation; the sliding block is provided with a locking end and an arc-shaped end, and the arc-shaped end is in contact with the cam; when the arc-shaped end makes contact with the far rest position or the near rest position of the cam, the limiting feature is attached to the locking end, and a locking position is formed.

The invention relates to a planetary gear (10) for a planetary transmission (1), wherein a gear ring (12) of the planetary gear (10) has such elasticity that the gear ring (12) of the planetary gear (10) is designed to be radially spring-loaded simultaneously by a ring gear (14) and a sun gear (16), wherein the gear ring (12) of the planetary gear (10) is designed to form a double-flank contact with the ring gear (14) and the sun gear (16) in response to the radial spring-loading. The invention further relates to a steering gear for a steering system of a motor vehicle.

The invention relates to the technical field of vehicles, and discloses a drive-by-wire steering gear, a steering control method and a vehicle, the drive-by-wire steering gear comprises a shell, a steering assembly, a self-locking assembly and a controller, the self-locking assembly is connected to the shell and arranged on the peripheral side of the steering assembly, and the self-locking assembly has a locking state and an unlocking state. During application, in the normal driving process, the self-locking assembly can be kept in the unlocking state, the steering assembly is driven to move and can drive the steering wheel to steer, if a fault occurs, the controller controls the self-locking assembly to be switched into the locking state according to a fault signal, and therefore the current position of the steering assembly is locked when the fault occurs; the problem that the steering wheel swings back and forth due to continuous movement of the steering assembly is prevented, and the stability and safety of the vehicle are improved.

A steering system for use in turning steerable vehicle wheels includes a steering wheel and a housing. A pinion gear is located in the housing and is connected to the steering wheel via a shaft, so that the rotation of the steering wheel forces the pinion gear to rotate around an axis relative to the housing. The pinion gear has a recess. An elastic element is compressed in the recess between the pinion gear and the shaft. The elastic element exerts an axial force on the pinion gear, which dampens axial movements of the pinion gear relative to the housing.

An independent steering device for a vehicle wheel comprises: a steering knuckle provided with a first upper coupling portion and a second upper coupling portion at an upper portion and a lower coupling portion at a lower portion; a first actuator rotatably coupled to the first upper coupling portion; a second actuator positioned adjacent to the first actuator and rotatably coupled to the second upper coupling portion; and a lower link rotatably coupled to the lower coupling portion. The lower coupling portion may be disposed below the center of the steering knuckle between the first upper coupling portion and the second upper coupling portion.

The invention relates to a drive device (6) for a steering device (5) for steering a first steerable wheel (2) and a second steerable wheel (3) of a motor vehicle (1), which form a left wheel and a right wheel of the motor vehicle (1), - with a housing (7) for fastening the drive device (6) to the motor vehicle (1), - with a first steering rod (11) which can be coupled to the first steerable wheel (2) for steering the first steerable wheel (2) and which is axially adjustable in the housing (7) and arranged in a rotationally fixed manner with respect to the housing (7), - with a second steering rod (13) which can be coupled to the second steerable wheel (3) for steering the second steerable wheel (3), - with a main actuator (15) for axially adjusting the first steering rod (11) relative to the housing (7), which is arranged in a fixed position on the housing (7), - with a sliding sleeve (16) which is axially adjustable in the housing (7) and arranged in a rotationally fixed manner relative to the housing (7) and which is axially fixedly coupled to the first steering rod (11) and rotatably relative thereto, - with an additional actuator (41) for rotatingly adjusting the sliding sleeve (16) relative to the housing (7), which is arranged in a fixed position on the housing (7), - wherein the second handlebar (13) is coupled to the first handlebar (11) in a rotationally fixed manner and axially adjustable relative thereto and coaxially passes through the sliding sleeve (16) and is drive-coupled to the sliding sleeve (16) in such a way that a rotational adjustment of the sliding sleeve (16) relative to the housing (7) produces an axial adjustment of the second handlebar (13) relative to the sliding sleeve (16).

A spindle drive for a vehicle steering gear, including a spindle having an external thread and a spindle nut having an internal thread being guided on the external thread. One of the spindle and spindle nut is rotatable and produces a corresponding translational movement of the other. The other of the spindle and spindle nut is guided via a plain bearing along the axis of rotation relative to a fixed structural part. The plain bearing is formed between sliding surfaces of a first and second bearing part, the first being provided on the other of the spindle and spindle nut and the second being provided on the fixed structural part. One of the first and second bearing parts is designed as an elevation, the other being designed as a recess. The recess surrounds the elevation on both sides in a rotational direction.

The utility model relates to the technical field of vehicles, and discloses a limiting device, a steer-by-wire system and a vehicle, and the limiting device comprises a steering shaft, at least one rotating piece and two rotating limiting pieces. The at least one rotating piece is sequentially and rotatably arranged on the steering shaft in a sleeving mode in the axial direction of the steering shaft, the rotating piece is provided with a second limiting part, and the second limiting part on the rotating piece located at the first end in the axial direction of the steering shaft can abut against or be separated from the first limiting part in the circumferential direction of the steering shaft. The second limiting parts on any two adjacent rotating pieces can abut against or be separated from each other in the circumferential direction of the steering shaft. The two rotation limiting pieces are arranged in the circumferential direction of the steering shaft in a spaced mode and used for limiting the rotation range of the second limiting part on the rotating piece located at the second end in the axial direction of the steering shaft. By means of the arrangement, the rotation angle range of the steering shaft is limited, rotation resistance torque can be generated on the steering wheel under the power-off working condition of an electric control system of the steer-by-wire system or when faults occur, the number of rotation turns of the steering wheel is limited, and a clock spring is protected.

The active differential type steering driver is characterized by comprising a box body, a main shaft, a first output half shaft, a first planetary gear mechanism, a second output half shaft, a second planetary gear mechanism, a steering input shaft, a first worm, a second worm and a power input shaft. The first planetary gear mechanism is rotatably arranged on one side of the box body, first worm gear teeth are arranged on the outer side of the first planetary gear mechanism, one end of the first planetary gear mechanism is connected with one end of the main shaft, and the other end of the first planetary gear mechanism is connected with the first output half shaft; the first worm is rotatably arranged on the box body, one end of the first worm is provided with a first worm gear meshed with the first worm gear, and the other end of the first worm is provided with a second gear meshed with the first gear; and the power input shaft is rotatably arranged on the box body and is connected with the main shaft through a transmission mechanism. The problems that a traditional steering mechanism is large in steering angle and discontinuous in steering are solved, and in-situ steering is achieved.

An active fault tolerance and fault mitigation system based on steer-by-wire dual motors and a mode switching control method thereof are provided. The system includes an acquisition unit, a steering wheel assembly, an ECU control module, a front wheel steering assembly, and a fault tolerance controller (18) which are sequentially connected. The acquisition unit transmits an acquired vehicle signal to the ECU control module, and then a corresponding compensation strategy is selected by means of a fault tolerance control strategy unit, a yaw rate calculation unit, a stability control unit, and a dual-motor compensation unit to act on a rack and pinion mechanism (15). The system and method can perform switching in an active fault tolerance and fault mitigation mode to achieve optimal control of the real-time performance of a vehicle, thereby ensuring the driving performance and higher performance of the vehicle in a field fault condition.

A steer-by-wire system for a vehicle includes a rack moveable in an axial direction and defining a groove extending in the axial direction of the rack. The system also includes a housing surrounding at least a portion of the rack. The system further includes an anti-rotation device disposed proximate an outer surface of the rack at the mounting location of the rack and within the housing, the anti-rotation device comprising a bearing seated within the groove of the rack. The system yet further includes a delash bearing assembly in contact with the rack to radially bias the rack to a desired position.

This electric power steering device (20) comprises a motor (22B), a speed reducer (22C), and a steering gear box (22A). The steering gear box has an input shaft (61) and a first housing (41). The speed reducer has first to fourth gears (51-54), a second housing (42), and a third housing (43). The first gear is coupled to a motor shaft (22B1) and rotates about a first axis (O1), the second gear and the third gear are coaxially coupled and rotate about a second axis (O2), and the fourth gear is coupled to an axial end of the input shaft and rotates about a third axis (O3). The relative positions of the first axis (O1) and the third axis (O3) are determined by attaching the motor (22B) and the first housing (41) to the second housing (42) from the same attachment direction in the axial direction of the input shaft.

The embodiments relates to a steering control device and method. Specifically, a steering control device according to the embodiments may include a first steering control module receiving a steering angle of a steering wheel from a steering angle sensor, calculating a position of a rack corresponding to the steering angle, and transmitting the position of the rack to a road wheel actuator (RWA) and a second steering control module to which a control right for the first steering control module is transferred when the first steering control module is determined to have a failure.

A steering system for use in turning steerable vehicle wheels includes a one-piece output unit connected to a steering wheel such that rotation of the steering wheel urges the output unit to rotate about an axis. The output unit has an output shaft coupled to the steerable vehicle wheels such that rotation of the output unit affects steering of the steerable vehicle wheels. The output unit supports a planetary gear. A sun gear is connected to an electric motor such that torque from the electric motor urges the sun gear to rotate relative to the output unit. The sun gear is meshed with the planetary gear such that rotation of the sun gear urges the planetary gear to rotate and orbit the sun gear. The output unit is urged to rotate about the axis in response to the planetary gear rotating and orbiting the sun gear.

The invention relates to the technical field of vehicle steering, and provides a steering system and a gap adjusting structure, and the gap adjusting structure comprises a structure body with a mounting hole, and an elastic piece and an elastic buffer piece which are arranged on the structure body. The mounting hole is used for mounting a rotating supporting piece arranged on the worm, the elastic piece and the elastic buffer piece are arranged in the mounting hole and abut against the rotating supporting piece, and under the elastic action of the elastic piece, the worm keeps meshed with the worm gear. According to the gap adjusting structure, the elastic piece and the buffer piece are arranged on the structure body, the elastic piece and the buffer piece abut against the rotating supporting piece, and under the elastic effect of the elastic piece, the worm keeps meshing with the worm gear, so that the elastic piece continuously exerts elastic force, and therefore the gap adjusting effect is achieved. Therefore, the worm and the worm gear can be always kept in an abutting state to keep a stable meshing relationship, and the clearance is compensated in real time, so that the operation reliability and accuracy of a steering system can be improved.

A steering system includes an electric motor having a first output shaft rotatable about a first axis. A first planetary gear stage has a first sun gear rotatable about the first axis by the first output shaft, and a first carrier connected to first planetary gears and rotatable about the first axis. A second planetary gear stage has a second sun gear rotatable about a second axis, and a second carrier connected to second planetary gears and rotatable about the second axis. A second output shaft is connected to the second carrier and a steering wheel such that rotation of each of the second carrier and the steering wheel urges the second output shaft to rotate about the second axis. The second output shaft is coupled to the steerable vehicle wheels such that rotation of the second output shaft affects steering of the steerable vehicle wheels.

A front frame assembly for a motor vehicle includes a suspension attachment structure comprising an attachment portion fixable to a bodywork cell defining a passenger compartment of the motor vehicle, one or more attachment elements fixed with respect to the suspension attachment structure and configured to permit a coupling of a suspension of the motor vehicle to the attachment portion, and a steering box comprising a steering tie rod for steering a wheel hub of the motor vehicle, a tubular casing extending along a first straight axis, and a transmission element coupled to the steering tie rod and to the tubular casing in an axially movable manner along the first axis inside the casing, wherein the tubular casing is rigidly fixed to the suspension attachment structure.

The present embodiments may provide a steer-by-wire steering apparatus which enables a driver to use a function for controlling an automobile, such as automatic parking, lane keeping, driving assistance according to a road surface condition, steering-vibration damping, or autonomous driving control, to improve the driver's convenience, and allows removal of hydraulic pressure-related components to prevent consumption of engine power by the components and thus can satisfy the high power and rigidity required for a steering device of a commercial vehicle.