Mechanical stop devices for the steering column perception emulator

Abstract

A steering system for a motor vehicle is disclosed. In some embodiments, the steering system includes a steering shaft, a steering column shroud surrounding at least one section of the steering shaft, an emulator enclosed within a housing, the emulator being coupled to the steering shaft, and a steering stop assembly enclosed within the housing and coupled to the steering shaft. The steering stop assembly comprises at least one rotating element having a pin and a groove configured to receive the pin, the groove including a stop section. In some embodiments, the at least one rotating element and at least one section of the steering shaft rotate within the housing, and the pin moves within the groove until, after a predetermined degree of rotation of the steering shaft, the pin engages the stop section.

Description

INTRODUCTION

[0001] The invention relates generally to the field of vehicles and in particular to a steer-by-wire system for a vehicle which includes mechanical torque limiters to restrict the rotation of the steering shaft.

[0002] A steer-by-wire system allows the vehicle to be steered electronically, meaning without a direct mechanical connection between the steering wheel and the vehicle's wheels. Steer-by-wire systems offer greater freedom in vehicle interior design than would be possible with a conventional steering system that uses a mechanical linkage. Furthermore, steer-by-wire systems typically have fewer parts and are less complex than conventional steering systems.

[0003] Many steering systems designed for steer-by-wire applications use electromechanical clutches or electric motors to act as a stop to counteract the driver's torque input. The electric motors are sized to regulate the driver's maximum torque input, which increases the weight, cost, and energy consumption of the steering system. SUMMARY

[0004] Embodiments according to the present disclosure offer a number of advantages. For example, embodiments according to the present disclosure provide a simple, lightweight, and cost-effective solution for limiting the rotation of the steering source and / or the steering wheel of a steer-by-wire system while maintaining the desired steering angle limits.

[0005] In one aspect, a steering system for a vehicle comprises a steering shaft, a steering column shroud surrounding at least one section of the steering shaft, an emulator enclosed within a housing, the emulator being coupled to the steering shaft, and a steering stop assembly enclosed within the housing and coupled to the steering shaft. The steering stop assembly includes at least one rotating element having a pin and a groove configured to receive the pin, the groove containing a stop section. The at least one rotating element and at least one section of the steering shaft rotate within the housing, and the pin moves within the groove until, after a predetermined degree of rotation of the steering shaft, the pin engages the stop section.

[0006] In some aspects, at least one of the rotating elements is a control disc.

[0007] In some aspects, at least one rotating element is a gearbox.

[0008] In some aspects, the stroke stop assembly includes a first cam rigidly coupled to the steering column shroud, having a first groove formed in a first side surface; a second cam having a first pin extending from a first side surface, the first pin configured to fit within the first groove; a second groove formed in a second side surface; a third cam having a second pin extending from a first side surface, the second pin configured to fit within the second groove; a third pin extending from a second wide surface; and a fourth cam rigidly coupled to the steering shaft having a third groove configured to receive the third pin.

[0009] In some aspects, the fourth cam rotates with the steering shaft and the third pin moves into the third groove until it reaches a third stop section, resulting in the rotation of the third cam in the same direction as the steering shaft, with the second pin moving into the second groove until it reaches a second stop section, resulting in the rotation of the second cam in the same direction as the steering shaft, with the first pin moving into the first groove until it reaches a first stop section.

[0010] In some aspects, the rotation of the steering shaft is stopped when the first pin reaches the first section.

[0011] In some aspects, the second and third cams rotate freely with respect to the steering shaft, and the fourth cam rotates with the steering shaft.

[0012] In some aspects, the housing includes the groove and the stop section, and the stroke stop assembly includes a planetary gear set, including a sun gear set coupled to the steering shaft, a planet carrier supporting at least one planetary gear set configured to engage with the sun gear set, and a ring gear set configured to engage with at least one planetary gear set, the ring gear set including the pin configured to move within the groove as the ring gear set rotates.

[0013] In some aspects, the rotation of the steering shaft is stopped when the pin reaches the stop section.

[0014] In some aspects, the width of the stop section can be adjusted based on a desired steering angle limit.

[0015] In another aspect, a motor vehicle includes a multitude of vehicle wheels and a steering system. The steering system includes a steering shaft, a steering column shroud surrounding at least one section of the steering shaft, an emulator enclosed within a housing, the emulator being coupled to the steering shaft, and a steering stop assembly enclosed within the housing and coupled to the steering shaft. The steering stop assembly includes at least one rotating element having a pin and a groove configured to receive the pin, the groove containing a stop section. The at least one rotating element and at least one section of the steering shaft rotate within the housing, and the pin moves within the groove until, after a predetermined degree of rotation of the steering shaft, the pin engages the stop section. The steering system is connected to the vehicle wheels for steering the vehicle wheels.

[0016] In some aspects, the motor vehicle further includes a controller configured to control the steering system and at least one vehicle sensor electrically connected to the controller, the controller being configured to receive a steering position signal from the at least one vehicle sensor and to generate a motor drive signal to steer the vehicle wheels.

[0017] In some aspects, the width of the stop section can be adjusted based on a desired steering angle limit.

[0018] In some aspects, the stroke stop assembly includes a first cam rigidly coupled to the steering column shroud, having a first groove formed in a first side surface; a second cam having a first pin extending from a first side surface, the first pin configured to fit within the first groove; a second groove formed in a second side surface; a third cam having a second pin extending from a first side surface, the second pin configured to fit within the second groove; a third pin extending from a second wide surface; and a fourth cam rigidly coupled to the steering shaft having a third groove configured to receive the third pin.

[0019] In some aspects, the fourth cam rotates with the steering shaft and the third pin moves into the third groove until it reaches a third stop section, resulting in the rotation of the third cam in the same direction as the steering shaft, with the second pin moving into the second groove until it reaches a second stop section, resulting in the rotation of the second cam in the same direction as the steering shaft, with the first pin moving into the first groove until it reaches a first stop section.

[0020] In some aspects, the rotation of the steering shaft is stopped when the first pin reaches the first section.

[0021] In some aspects, the housing includes the groove and the stop section, and the stroke stop assembly includes a planetary gear set, including a sun gear set coupled to the steering shaft, a planet carrier supporting at least one planetary gear set configured to engage with the sun gear set, and a ring gear set configured to engage with at least one planetary gear set, the ring gear set including the pin configured to move within the groove as the ring gear set rotates.

[0022] In some aspects, the rotation of the steering shaft is stopped when the pin reaches the stop section. List of characters

[0023] The present revelation is described herein in connection with the following figures, in which the same numbers represent the same elements. Fig. 1 is a functional block diagram of a vehicle, which, among other features, also includes a steering system with exemplary embodiments. Fig. Figure 2 is a schematic partial exploded view diagram of a steer-by-wire steering system with a mechanical limiter system according to exemplary embodiments. Fig. Figure 3 is a schematic partial explosion diagram of the mechanical limiter system. Fig. 2. Fig. Figure 4 is another perspective view of the partial explosion diagram of the [unclear text]. Fig. 2 mechanical limiter system shown. Fig. 5 is a schematic cross-sectional view of the in Fig. 2 mechanical limiter system shown. Fig. 6 is a schematic side view of the in Fig. 2 steer-by-wire systems shown. Fig. Figure 7 is a schematic cross-sectional view of the mechanical limiter system made of Fig. 2 in accordance with exemplary embodiments. Fig. Figure 8 is a schematic partial exploded view of a steer-by-wire steering system with a mechanical limiter system according to exemplary embodiments. Fig. 9 is a schematic partial explosion diagram of the in Fig. 8 mechanical limiter system shown. Fig. Figure 10 is a schematic perspective view of a motor / emulator for the steer-by-wire steering system. Fig. 8. Fig. Figure 11 is a schematic cross-sectional view of the steer-by-wire steering system made of Fig. 8. Fig. Figure 12 is a schematic, partially disassembled cross-sectional view of the steering system. Fig. 8. Fig. Figure 13 is a schematic partial cross-sectional view of the steer-by-wire steering system made of Fig. 8.

[0024] The foregoing and other features of the present disclosure will become clearer from the following description and the added claims in conjunction with the accompanying drawings. With the understanding that these drawings represent only some embodiments according to the disclosure and are not to be considered as limiting its scope, the disclosure is described with additional specificity and in detail by means of the accompanying drawings. All dimensions disclosed in the drawings or elsewhere herein are for illustrative purposes only. DETAILED DESCRIPTION

[0025] Embodiments of the present disclosure are described herein. It is understood, however, that the disclosed embodiments are merely examples and that other embodiments may take different and alternative forms. The figures are not necessarily to scale; some features may be shown larger or smaller to illustrate the details of certain components. Consequently, the structural and functional details disclosed herein are not to be understood as limiting, but merely as a representative basis for conveying to those skilled in the art the various ways in which the present invention may be used.As those skilled in the art understand, various features illustrated and described with reference to any of the figures can be combined with features illustrated in one or more other figures to create embodiments not explicitly illustrated or described. The illustrated combinations of features provide representative embodiments for typical applications. However, various combinations and modifications of the features, consistent with the teachings of this disclosure, may be desirable for specific applications and implementations.

[0026] Certain terminology may be used in the following description for reference only and is therefore not intended to be restrictive. Terms such as "above" and "below," for example, refer to directions in the referenced drawings. Terms such as "front," "rear," "left," "right," "tail," and "side" describe the orientation and / or location of parts of the components or elements within a consistent but arbitrary framework, which is clarified by references to the text and the associated drawings when describing the components or elements under discussion. Furthermore, terms such as "first," "second," "third," and so on may be used to describe separate components. Such terminology may include the words explicitly mentioned above, as well as derivatives and words of comparable meaning.

[0027] In the implementation of steer-by-wire technology, the intermediate shaft between the steering column and the steering gear is eliminated. This allows the steering column and steering wheel to rotate without travel limits. Current steering columns rotate approximately ±1.5 revolutions and incorporate an additional inflatable retaining coil (SIR) designed based on this steering angle limit. The embodiments discussed herein include a mechanical stroke stop system to prevent overtravel or interruption of the airbag's electrical circuitry and to provide feedback to the driver when the steering wheel is in its end position.

[0028] With reference to Fig. 1 will be a vehicle 100 depicted, a steering system 112in accordance with various embodiments. Although the figures shown herein represent exemplary arrangements of elements, additional (intermediate) elements, devices, functions, or components may also occur in an actual embodiment. It should be noted that Fig. 1 is for illustrative purposes only and may not be to scale.

[0029] As in Fig. As shown in 1, the vehicle includes 100 generally a chassis 104 , a car body 106 , front wheels 108 , rear wheels 110 , a steering system 112 and a tax system 116 The bodywork 106 is on the chassis 104 arranged and essentially encloses the other components of the vehicle 100 The bodywork 106 and the chassis 104 together they can form a frame. The wheels 108 -110 are each in the chassis 104 near every corner of the bodywork 106 rotatably connected.

[0030] As can be seen, the vehicle 100 It can be one of a number of different types of automobiles, for example a sedan, a station wagon, a truck, or an SUV, and can have two-wheel drive (2WD) (i.e., rear- or front-wheel drive), selectable four-wheel drive (4WD), or all-wheel drive (AWD). 100 It may also include one or a combination of several from a number of different propulsion systems, for example a gasoline or diesel internal combustion engine, a 'flexfuel' engine (FFV) (i.e. using a mixture of gasoline and ethanol), an engine powered by a gaseous compound (e.g. hydrogen or natural gas), an internal combustion / electric hybrid engine, and an electric motor.

[0031] In some embodiments, the steering system includes 112 a steering column assembly 118 and a steering wheel 120 The steering system comes in various designs. 112 a steer-by-wire system which uses electric motors to turn the wheels, sensors to determine how much steering force to apply, and steering feel emulators to provide haptic feedback to the driver.

[0032] In various embodiments, the steering system includes 112 an engine 122 , which is connected to the steering system 112 is coupled, and what torque or force is required for one or more of the wheels 108 - 110 provides. The engine 122 can be attached to the rotating shaft of the steering column assembly 118 be coupled. The steering system 112further includes one or more sensor(s) for recording the observable conditions of the steering system 112 The steering system features various designs. 112 via a torque sensor 124 and a position sensor 126 The torque sensor 124 detects a torque exerted on the steering system, for example when the driver of the vehicle 100 the steering wheel 120 actuated, thus generating a torque-based signal. The position sensor 126 detects a rotational position of the steering wheel 120 and generates position signals based on this.

[0033] The tax system 116 receives the sensor signals and monitors the operation of the steering system 112 accordingly. In general, the tax system receives 116It processes torque sensor signals over a specific period of time to determine the torque to be applied to the wheels.

[0034] Many steering systems designed for steer-by-wire applications use electromechanical clutches or electric motors to act as a stop to counteract the driver's torque input. The electric motors are sized to regulate the driver's maximum torque input, which increases the weight, cost, and energy consumption of the steering system.

[0035] Instead of a large electric motor to counteract the maximum torque input from the driver, embodiments of the steering system discussed herein incorporate mechanical end-of-rotation stops to limit the steering shaft's travel. In some embodiments, the mechanical end-of-rotation stops are connected to an emulator to provide the driver with haptic feedback as to when the steering gear is at the end of its travel. In some embodiments, the mechanical end-of-rotation stops are rotatable disc cams with stop pins or journals, as further described herein. In some embodiments, the mechanical end-of-rotation stops incorporate a planetary gear set with stop pins or journals, as further described herein.

[0036] Fig. Figures 2-7 are schematic diagrams of a steering system. 212 , which is a mechanical travel limiting assembly 214according to one embodiment. The system includes 212 includes a steering column assembly 218 , which are located within a housing 225 located motor / emulator 224 is connected. In some embodiments, the motor / emulator represents 224 It provides the driver with haptic feedback to indicate when the steering gear has reached the end of its travel. In some embodiments, the steering column assembly 218 with the vehicle's instrument panel (IP) 100 connected at one or more connection points. The steering column assembly 218 includes a steering shaft 217 and a steering column shroud 220 , which the steering shaft 217 at least partially surrounds the steering column. An additional inflatable retaining (SIR) coil 222 is attached to the steering column shroud. 220 connected and has an interface with the steering wheel 120 The steering wheel 120is connected to the steering shaft 217 connected. If the steering wheel 120 As it rotates, the SIR coil also rotates. 222 and the steering shaft 217 .

[0037] The mechanical travel limiting assembly 214 In some embodiments, it includes a multitude of rotatable disc cams. 260 , 270 , 280 , 290 In some embodiments, a ring 250 connected to one of the cams to control the multitude of cams within the housing 225 of the engine / emulator 224 to secure and align.

[0038] With reference to the Fig. 2-5 includes the path limiting assembly 214 a first cam 260 , which are attached to the steering column casing 220 is attached (i.e., is attached to the first cam) 260 (attached and does not rotate). The first cam 260 includes a left surface or first surface 261and a right surface or second surface 262 , which are defined by an edge surface 263 are separated. The edge surface 263 defines a width of the first cam 260 .

[0039] The second area 262 includes a groove 264 The groove 264 is through a grooved surface 265 , an outer side wall 266 , an inner side wall 267 , end walls 268 the groove (an end wall) 268 will be in Fig. 3 shown) defined. The groove surface 265 , the outer side wall 266 , the inner side wall 267 , and the end walls of the groove 268 , which are adjacent to each other, define the groove 264 , which are from the second surface 262 into one through the side walls 266 , 267 and the end walls 268 The groove is pressed into it to a defined depth. In some embodiments, the groove is... 264a specific circular groove. The end walls 268 define a first stop section of the groove 256 The stop section 256 interrupts the groove 264 such that the groove 264 not a perfectly circular groove in the second surface 262 defined. The width of the stop section. 256 is variable and can be adjusted based on the desired steering angle limit.

[0040] A second cam 270 is due to the first cam 260 on. The second cam 270 is about a first camp 252 free around the steering shaft 217 rotatable (see Fig. 5). The second cam 270 includes a left surface or first surface 271 and a right surface or second surface 272 , which are defined by an edge surface 273 are separated. The edge surface 273 defines a width of the second cam 270.

[0041] With reference to Fig. 4 and Fig. 5 includes the first area 271 a pin or peg 279 , which extends from and is generally perpendicular to the first surface 271 the second cam 270 extends. The pin or tenon 279 is positioned in such a way that the pin 279 within the groove 264 the first cam 260 It fits. In some designs, the pin 279 a cylindrical extension extending from the surface of the second cam 270 extends outwards. However, as can be seen, the cone can 279 any other cross-sectional shape, including square, rectangular, oval, etc.

[0042] As in the Fig. 3 and Fig. As shown in 5, the second area includes 272 and the second cam 270 a groove 274 The groove 274is through an outer side wall 276 , an inner side wall 277 , a grooved surface 275 , end walls 278 the groove (an end wall) 278 will be in Fig. 3 shown) defined. The groove surface 275 , the outer side wall 276 , the inner side wall 277 , and the end walls of the groove 278 , which are adjacent to each other, define the groove 274 , which are from the second surface 272 into one through the side walls 276 , 277 and the end walls 278 The groove is pressed into it to a defined depth. In some embodiments, the groove is... 274 a specific circular groove. The end walls 278 further define a second stop section of the groove 258 The stop section 258 interrupts the groove 274 such that the groove 274 not a perfectly circular groove in the second surface 272defined. The width of the stop section. 258 is variable and can be adjusted based on the desired steering angle limit.

[0043] A third cam 280 is located at the second cam 270 on. The third cam 280 is via a second warehouse 254 free around the steering shaft 217 rotatable (see Fig. 5) The third cam 280 includes a left surface or first surface 281 and a right surface or second surface 282 , which are defined by an edge surface 283 are separated. The edge surface 283 defines a width of the second cam 280 .

[0044] With reference to Fig. 4 and Fig. 5 includes the first area 281 a first pin or peg 289A , which extends from and is generally perpendicular to the first surface 281 the third cam 280extends. The first pin or peg 289A is positioned in such a way that the pin 289A within the groove 274 the second cam 270 It fits. In some designs, the pin 289A a cylindrical extension extending from the left side surface of the second cam 280 extends outwards. However, as can be seen, the cone can 289A any other cross-sectional shape, including square, rectangular, oval, etc.

[0045] As in Fig. 3 and Fig. As shown in 5, the second area includes 282 the third cam 280 a second pin or peg 289B , which extends from and is generally perpendicular to the second surface 282 the third cam 280 extends. The second pin or peg 289B is positioned in such a way that the pin 289B within a groove 294the fourth cam 290 (explained in more detail here) fits. In some embodiments, the pin 289B a cylindrical extension extending from the side surface of the second cam 280 extends outwards. However, as can be seen, the cone can 289B any other cross-sectional shape, including square, rectangular, oval, etc. As in Fig. As shown in section 5, the cones can be 289A , 289B in some embodiments on opposite sides of the third cam 280 be positioned in such a way that the third cam 280 is arranged symmetrically around an axis that extends radially through the third cam 280 leads. While in Fig. 5, as can be seen, two cones 289A , 289B The third cam can be represented 280 more or less cones 289A , 289B include.

[0046] A fourth cam 290 is located at the third cam 280 on. The fourth cam 290 is with reference to the steering shaft 217 such that the fourth cam 290 dealing with the steering shaft 217 turns (see Fig. 5) The fourth cam 290 includes a left surface or first surface 291 and a right surface or second surface 292 , which are defined by an edge surface 293 are separated. The edge surface 293 defines a width of the fourth cam 290 .

[0047] As in the Fig. 4 and Fig. As shown in 5, the first area includes 291 the fourth cam 290 a groove 294 The groove 294 is through an outer side wall 296 , an inner side wall 297 , a grooved surface 295 , end walls 298 the groove (an end wall) 298 will be in Fig. 4 shown) defined. The groove surface 295 , the outer side wall 296 , the inner side wall 297 , and the end walls of the groove 298 , which are adjacent to each other, define the groove 294 , which from the first area 291 into one through the side walls 296 , 297 and the end walls 298 The groove is pressed into it to a defined depth. In some embodiments, the groove is... 294 a specific circular groove. The end walls 298 further define a stop section of the groove 259 The stop section 259 interrupts the groove 294 such that the groove 294 not a perfectly circular groove in the second surface 291 defined. The width of the stop section. 259 is variable and can be adjusted based on the desired steering angle limit.

[0048] With reference to Fig. 6 and Fig. 7 fit the cams 260 , 270 , 280 , 290 closely together when used as part of the steering system 212 They are mounted so that the pins fit into the corresponding grooves in adjacent cams, such as in Fig. 7 is shown as Nut 264 the first cam 260 configured to use the cone 279 the second cam 270 to record. Likewise, the groove 274 the second cam 270 configured to use the cone 289A the third cam 280 to record and the groove 294 the fourth cam 290 is configured to use the cone 289B the third cam 280 to record.

[0049] In some embodiments, the pins extend 279 , 289A , 289Bover different distances from the surfaces of the cams (i.e., the pins have substantially different lengths). In some embodiments, the pins have substantially the same length. Likewise, the pins can 279 , 289A , 289B In some embodiments, they may have essentially the same width, or they may have essentially different widths. The length and width of each pin 279 , 289A , 289B is selectable based, for example, and without restriction among other factors, on the dimensioning and packaging restrictions and the input torque, which is counteracted by mechanical stops.

[0050] The cams 260 , 270 , 280 , 290 fit, as in Fig. 7 shown, inside the housing 225 of the engine / emulator 224 In some versions, the ring fits 250, which is attached to the first cam 260 attached to or connected with it, within the housing of the motor / emulator, to the mechanical stroke stop assembly 214 with reference to the steering shaft 217 to align.

[0051] While the steering shaft 217 rotating, restricts the mechanical lifting stop assembly 214 It adjusts the steering angle and acts as a stop to counteract the torque applied by the driver / vehicle operator. When the steering shaft 217 rotates clockwise (i.e., in the direction indicated by the in Fig. 4 arrow shown 248 (as indicated), the fourth cam rotates. 290 , which are directly connected to the steering shaft 217 is connected and therefore rotates, for example also in that direction 248 As described herein, the pin fits 289B into the groove 294 in the fourth cam 290 and moves within it. When the fourth cam 290As it rotates, the groove rotates 294 until the cone 289B to one end of the groove 294 hits and hits the end wall 298 adjacent to the attack section 259 partially defined. When the fourth cam 290 continue dealing with the steering shaft 217 turns, turns the force of the end wall 298 against the cone 289B also the third cam 280 .

[0052] As discussed herein, the third nut includes 280 in some embodiments, such as in Fig. 5 shown, also the cone 289A , which is inside the groove 274 the second curl 270 fits and moves within it. When the third cam 280 As it rotates, the pin moves. 289A due to the force of the end wall 298 against the cone 289B into the groove 274 into it. When the third and fourth cams 280 , 290have rotated in such a way that the pin 289A to one end of the groove 274 where it meets, the cone borders 289A on the end wall 278 , which includes the stop section 258 partially defined, on. When the third and fourth cams 280 , 290 to continue rotating, the force of the pin rotates 289A against the end wall 278 also the second cam 270 .

[0053] As in Fig. As illustrated in point 5, the second cam includes 270 the cone 279 , which is inside the groove 264 in the first cam 260 fits and moves within it. When the second cam 270 to the third and fourth cam 280 , 290 As it rotates, the pin moves. 279 within the groove 264 As discussed herein, the first cam 260 directly with the steering column casing 220 connected, i.e. the first cam 260It doesn't turn. If the pin 279 within the groove 264 moved and one end of the groove 264 Encountered, the force of the end wall stops. 268 against the cone 279 Therefore, a further rotation of the cams 270 , 280 , 290 and the steering shaft 217 , which changes the steering angle of the steering system 212 in the direction of the arrow 248 The indicated direction is restricted.

[0054] If the steering shaft 217 turns in a direction that is indicated by the arrow 248 in Fig. If the direction indicated for cam 4 is opposite, the rotation of the cam discs proceeds in a similar manner to the sequence discussed above. First, the fourth cam rotates. 290 dealing with the steering shaft 217 If the fourth cam 290 As it rotates, the groove rotates 294 until the cone 289B to the other end of the groove 294 and at the end wall298 impacts the force of the end wall 298 against the cone 289B The third cam also rotates 280 .

[0055] When the third cam 280 to deal with the fourth cam 290 As it rotates, the pin moves. 289A within the groove 274 the second cam 270 If the cone 289A to the opposite end of the groove 274 on the other end wall 278 when it hits, the force of the pin rotates it. 289A against the end wall 278 also the second cam 270 If the cone 279 to curl the second lock 270 As it rotates, the pin moves. 279 finally within the groove 264 the first cam 260 , until the cone 279 to the other end of the groove 264 on the other end wall 268 hits. Since the first cam 260 to the steering column man 220If it is attached and does not rotate, the force of the other end wall stops it. 268 against the cone 279 the further rotation of the cams 270 , 280 , 290 and the steering shaft 217 , which changes the steering angle of the steering system 212 is restricted in the opposite direction.

[0056] In some embodiments, such as in the Fig. The cams are shown in 2-7. 260 , 270 , 280 , 290 Circular cams with different radii. The size of each cam 260 , 270 , 280 , 290 For example, it is adjustable without restriction based on the dimensions, packaging constraints, and the desired steering angle limitation. Furthermore, the width of each of the stop sections is also adjustable. 256 , 258 , 259 (i.e. the space between each end wall) 268 , the space between each end wall278 ,and the same between each end wall 298 ) for example, and without restriction also selectable based on the desired steering angle restrictions.

[0057] Fig. Figures 8-13 illustrate another embodiment of a mechanical path limiting assembly. 314 for a steering system 312 The system 312 includes a steering column assembly 318 , which uses a motor / emulator 324 is connected. In some embodiments, the steering column assembly. 318 with the vehicle's instrument panel (IP) 100 connected at one or more connection points. The steering column assembly 318 includes a steering shaft 317 and a steering column shroud 320 , which the steering shaft 317 at least partially surrounds it. A SIR coil 222 is connected to the steering column casing 320 connected and has an interface with the steering wheel 120The steering wheel 120 is connected to the steering shaft 317 connected. If the steering wheel 120 As it rotates, the SIR coil also rotates. 222 and the steering shaft 317 .

[0058] In some embodiments, the mechanical travel limiting assembly includes 314 a variety of rotary gears 370 , 380 , 390 A cover plate 360 and a ring 350 They secure and align the multitude of gears within the housing. 325 of the engine / emulator 324 out of.

[0059] With reference to Fig. 8 and Fig. 9 includes the path limiting assembly 314A planetary gear set. A simple planetary gear set is a type of fixed gear assembly. A planet carrier supports a set of planetary gears, so the planetary gear set rotates with the planet carrier. The external gearing on the planetary gear set meshes with the external gearing on the sun gear set and with the internal gearing on the ring gear set. The sun gear set and the ring gear set are supported to rotate around the same axis as the carrier. The planetary gear set includes a variety of planetary gear sets. 370 (three shown) which are supported by a carrier 372 to the cover plate 360 are attached. The carrier 372 includes a multitude of protrusions 374 The number of protrusions 374 equals the number of planetary gears 370 As in Fig. 12 and Fig. As shown in 13, the projections include 374 an axis375 , which pass through the center of each planetary gear 370 The axes run. 375 the protrusions 374 connect with a connecting ring 377 , which has a multitude of connecting protrusions 376 exhibits the connecting projections. 376 represent points of mechanical connection between the support 372 and the cover plate 360 ready.

[0060] In some embodiments, the cover plate includes 360 an outdoor area 362 and a recessed surface 364 , which are on the outer surface 362 is positioned radially inwards. In some embodiments, the recessed surface defines 364 a plane that is separated from a plane that is separated from the outer surface 362 is defined, separated and arranged parallel to it. In some embodiments, connecting projections are 376 to the recessed surface 364the cover plate 360 fastened using any type of mechanical fastening, for example, and without limitation, screws, pins, etc.

[0061] The planetary gears 370 surround a solar gear 390 In some embodiments, the solar gear 390 to the steering shaft 317 attached or integrally formed with it. The solar gear 390 It features a multitude of teeth or prongs configured to mesh with the teeth of the planetary gears. 370 to be engaged. A ring gear. 380 orbits the planetary gears 370 The ring gear 380 includes an outdoor area 381 and an interior surface 382 The exterior surface 381 includes at least one pin or peg 389 In some embodiments, the pin 389a cylindrical extension that extends radially outwards from the outer surface 381 of the ring gear 380 extends. However, as can be seen, the cone can 389 any other cross-sectional shape, including square, rectangular, oval, etc. Similar to the pegs discussed herein with regard to the path-bounding system. 214 , is the cone 389 configured to interact with an end wall of a groove to limit the steering angle, as further explained herein. The inner surface 382 of the ring gear 380 includes a variety of teeth or prongs configured to mesh with the teeth of the planetary gears 370 to be put under intervention.

[0062] With reference to the Fig. 10 and Fig. 11 is the path limiting assembly 314 inside the housing 325 of the engine / emulator 324attached. The housing 325 includes a groove 354 in an assembly area 326 is trained. The groove 354 is through a grooved surface 355 , an outer side wall 356 , an inner side wall 357 , end walls 358 the groove (an end wall) 358 will be in Fig. 10) defined. The groove surface 355 , the outer side wall 356 , the inner side wall 357 , and the end walls of the groove 358 , which are adjacent to each other, define the groove 354 , which are located on the housing mounting surface 326 into one through the side walls 356 , 357 and the end walls 358 The groove is pressed into it to a defined depth. In some embodiments, the groove is... 354 a specific circular groove. The end walls 358 define a stop section of the groove 359 The stop section 359 interrupts the groove 354such that the groove 354 not a perfectly circular groove in the mounting surface 326 defined. The width of the stop section. 359 is variable and can be adjusted based on the desired steering angle limit. In some embodiments, the groove 354 into the mounting surface 326 during the manufacture of the case 325 incorporated.

[0063] As in Fig. As shown in 11, the planetary gears 370 , if they are inside the housing 325 to be mounted evenly around the sun gear 390 distributed so that the teeth of the planetary gears 370 with the teeth of the solar gear 390 be brought into action. Similarly, the ring gear orbits the 380 planetary gear 370 , so that the teeth of the planetary gear 370 with the teeth of the ring gear 380be intervened. The cone 389 of the ring gear 380 fits within the groove 354 in the case 325 and moves within it. In some embodiments, the length and width of the pin are 389 (i.e., the removal of the cone) 389 extends from the outer surface 381 of the ring gear 380 ) based on other factors, for example, and without restrictions on the dimensioning and packaging limitations and the input moment, which is counteracted by the mechanical path limitation system, variable.

[0064] While the steering shaft 317 rotating, restricts the mechanical lifting stop assembly 314 It adjusts the steering angle and acts as a stop to counteract the torque applied by the driver / vehicle operator. When the steering shaft 317 for example, in a clockwise direction (i.e., in the direction indicated by the arrow). 348 out of Fig.(13 specified direction) rotates, the sun gear rotates 390 also at the same speed. The rotation of the sun gear. 390 drives the rotation of each planetary gear 370 so that each planetary gear 370 around its own axis 375 rotates. The planetary gears 370 are in relation to the case 325 fixed and do not rotate around the solar gear 390 in position. The rotation of the planetary gears 370 drives the rotation of the ring gear 380 so that the ring gear 380 in the same direction as the steering shaft 317 rotates. When the ring gear 380 As it rotates, the pin moves. 389 within the groove 354 until the cone 389 on the end walls 358 the groove 354 adjacent. The rotation of the ring gear 380 will end when the cone 389 to the end wall 358impacts, thereby affecting the other components of the path limitation system 314 are caused to also stop their rotation, thereby reducing the rotation of the steering column. 317 is effectively restricted.

[0065] If the steering shaft 317 in the opposite direction of the arrow 348 As it rotates, the pin moves. 389 of the ring gear 380 similarly in the other direction within the groove 354 until the cone 389 on the stop section 359 the one from the other end wall 358 is defined, impacts, causing the rotation of the steering column 317 is effectively restricted in this direction.

[0066] Due to the size / diameter difference between the sun gear 390 and the ring gear 380 the solar gear rotates 390 and the steering gears 317faster than the ring gear 380 The ratio between the diameter of the solar gear 390 and the ring gear 380 It is adjustable to achieve the desired steering angle limitation and to meet dimensioning and packaging restrictions. Furthermore, the width of the stop section can be adjusted. 359 They must be adjusted to achieve the desired steering angle limitation.

[0067] It should be emphasized that many variations and modifications can be made to the embodiments described herein, the elements of which are to be understood as being among other acceptable examples. All such modifications and variations are hereby included within the scope of this disclosure and protected by the following claims. Furthermore, each of the steps described herein can be carried out simultaneously or in a sequence that differs from the steps described herein. Moreover, as should be obvious, the features and attributes of the specific embodiments disclosed herein can be combined in different ways to form additional embodiments, all of which fall within the scope of this disclosure.

[0068] Conditional language used herein, such as "may," "could," "e.g.," and the like, is generally to be understood, unless expressly stated otherwise or understood differently in the context used, as meaning that certain embodiments include certain features, elements, and / or states, while other embodiments do not. Thus, this conditional language generally does not mean that features, elements, and / or states are in any way required for one or more embodiments, or that one or more embodiments necessarily include logic, with or without author input or prompt, to decide whether these features, elements, and / or states are included or implemented in any particular embodiment.

[0069] Furthermore, the following terminology may have been used herein. The singular forms "ein," "eine," "die," and "der" include plural references unless the context clearly indicates otherwise. Thus, for example, a reference to an element includes a reference to one or more elements. The terms "diejenigen" and "solche" refer to one, two, or more and are generally used to select some or all of a quantity. The term "Vielfalt" refers to two or more of an element. The term "etwa" or "annähend" means that quantities, dimensions, sizes, formulations, parameters, shapes, and other characteristics need not be exact but may be approximated and / or larger or smaller as desired, reflecting acceptable tolerances, conversion factors, rounding, measurement errors, and the like, as well as other factors known to experts in the field.The term “essentially” means that the stated property, parameter or value does not have to be achieved exactly, but that deviations or variations, such as tolerances, measurement errors, limitations of measurement accuracy and other factors known to experts in the field, may occur in quantities that do not preclude the effect that the property is intended to provide.

[0070] Numerical data may be expressed or represented herein in a range format. It is understood that such a range format is used solely for convenience and brevity and should therefore be interpreted flexibly, not only to explicitly include the numerical values ​​expressly listed as the limits of the range, but also to include all individual numerical values ​​or subranges within that range, as if each numerical value and subrange were explicitly listed. For example, a numerical range of approximately 1 to 5 should be interpreted not only as including the explicitly stated values ​​of approximately 1 to approximately 5, but also as including individual values ​​and subranges within the specified range.Thus, this numerical range includes individual values ​​such as 2, 3, and 4, and subranges such as "about 1 to about 3," "about 2 to 4," and "about 3 to about 5," "1 to 3," "2 to 4," "3 to 5," and so on. The same principle applies to ranges that specify only a single numerical value (e.g., "greater than about 1") and is intended to hold true regardless of the range's size or the properties being described. A multitude of terms may be presented in a single list for convenience. However, these lists should be designed so that each element is individually identifiable as a separate and unique element. Therefore, no single element of such a list should be considered the de facto equivalent of any other element in the same list solely based on their representation in a common group, unless explicitly stated otherwise.Furthermore, the terms "and" and "or" can be used in conjunction with a list of items, which is to be interpreted broadly, since one or more of the listed items can be used alone or in combination with other listed items. The term "alternative" refers to the selection of one of two or more alternatives and is not intended to restrict the selection of only the listed alternatives or only one of the listed alternatives at a time, unless the context clearly indicates otherwise.

[0071] The processes, methods, or algorithms disclosed herein may be provided and / or implemented by a processing device, controller, or computer, which may include any existing programmable electronic controller or a dedicated electronic controller. Likewise, the processes, methods, or algorithms may be stored by a controller or computer as data or executable instructions in a variety of ways, including, without limitation, permanent storage on non-writable storage media such as ROM, and as modifiable information on writable storage media such as floppy disks, magnetic tapes, CDs, RAM, and other magnetic and optical media. The processes, methods, or algorithms may also be implemented in a software-executable object.Alternatively, the processes, procedures, or algorithms can be implemented wholly or partially using suitable hardware components, such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), state machines, controllers, or other hardware components or devices, or a combination of hardware, software, and firmware components. These exemplary devices can be located on-board or off-board as part of a vehicle computer system and can establish remote communication with devices on one or more vehicles.

[0072] While exemplary embodiments have been described above, it is not intended that these embodiments describe all possible forms included in the claims. Rather, the words used in the specification serve to describe, not to limit, and it is understood that various modifications may be made without departing from the spirit and scope of the disclosure. As previously described, the features of different embodiments can be combined to form further exemplary aspects of the present disclosure that are not explicitly described or illustrated.While various embodiments may have been described to offer advantages or be preferred over other embodiments or implementations of the prior art with respect to one or more desired features, those skilled in the field will recognize that one or more features may be compromised to achieve desired overall system attributes, which depend on the specific application and implementation. These attributes may include, but are not limited to, cost, strength, durability, life-cycle costs, marketability, appearance, packaging, size, usability, weight, manufacturability, ease of assembly, etc.Therefore, embodiments which, according to the prior art, are described as less desirable than other embodiments or implementations with respect to one or more properties, are not outside the scope of protection of the disclosure and may be desirable for certain applications.

Claims

[1] Steering system for a motor vehicle, comprising: a steering shaft; a steering column shroud that surrounds at least one section of the steering shaft; an emulator located within a housing, wherein the emulator is connected to the steering shaft; and a travel limiting assembly located within the housing and coupled to a steering shaft, wherein the travel limiting assembly comprises at least one rotating element having a pin and a groove configured to receive the pin, the groove including a stop section; wherein at least one rotating element and at least one section of the steering shaft rotates within the housing and the pin moves within the groove until, after a predetermined degree of rotation of the steering shaft, the pin hits the stop section. [2] Steering system according to claim 1, wherein at least one rotating element is a disc cam. [3] Steering system according to claim 1, wherein at least one rotating element is a transmission. [4] Steering system according to claim 2, wherein the stroke stop assembly comprises the following: a first cam fixedly coupled to the steering column shroud, having a first groove formed in a first side surface; a second cam having a first pin extending from a first side surface, wherein the first pin is configured to fit within the first groove; a second groove formed in a second side surface; a third cam having a second pin extending from a first side surface, wherein the second pin is configured to fit within the second groove; a third pin extending from a second wide surface; and a fourth cam fixedly coupled to the steering shaft, having a third groove configured to receive the third pin. [5] Steering system according to claim 4, wherein the fourth cam rotates with the steering shaft and the third pin moves into the third groove until it reaches a third stop section, resulting in the rotation of the third cam in the same direction as the steering shaft, wherein the second pin moves into the second groove until it reaches a second stop section, resulting in the rotation of the second cam in the same direction as the steering shaft, wherein the first pin moves into the first groove until it reaches a first stop section. [6] Steering system according to claim 5, wherein the rotation of the steering shaft is stopped when the first pin has reached the first section. [7] Steering system according to claim 4, wherein the second and third cams are freely rotatable with respect to the steering shaft and the fourth cam rotates with the steering shaft. [8] Steering system according to claim 3, wherein the housing comprises the groove and the stop section and the stroke stop assembly comprises a planetary gear, including a sun gear coupled to the steering shaft, a planet carrier supporting at least one planetary gear configured to engage with the sun gear and a ring gear configured to engage with at least one planetary gear, wherein the ring gear includes the pin configured to move within the groove while the ring gear rotates. [9] Steering system according to claim 8, wherein the rotation of the steering shaft is stopped when the first pin has reached the first stop section. [10] Steering system according to claim 9, wherein a width of the steering section is adjustable based on a desired steering angle limitation.

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