Multifunctional steer-by-wire hand feeling simulator

Abstract

The invention relates to the technical field of vehicles, and discloses a multifunctional steer-by-wire hand feeling simulator which comprises a steering column and an upper steering mandrel assembly arranged in the steering column, and the upper steering mandrel assembly is connected with a steering wheel through a spline. A speed reducing mechanism, a telescopic adjusting mechanism, an angle adjusting mechanism and an angle limiting mechanism are arranged on the steering column, the speed reducing mechanism is used for providing damping for the steering wheel to guarantee the road feeling, the telescopic adjusting mechanism is used for automatically adjusting the telescopic steering wheel, and the angle adjusting mechanism is used for adjusting the angle of the steering wheel. The angle limiting mechanism is used for limiting the number of turns of the steering wheel. The invention has the following advantages and effects: the driving experience of a driver can be improved, the driving space is saved, and the comfort level is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicles, and in particular to a multifunctional wire-controlled steering feel simulator. Background Art

[0002] The steering system of an automobile has gone through the development process of mechanical steering system, hydraulic power steering system, electronically controlled hydraulic power steering system, and electric power steering system. With the development of wire control technology, wire control steering technology has gradually appeared in the steering system of an automobile. Wire control steering technology is an emerging automobile steering system technology. It realizes vehicle steering control through electronic signals rather than traditional mechanical connections. The core of this technology is to convert the driver's steering input into electronic signals, and then control the steering angle of the vehicle through electric actuators. However, for the existing wire control steering technology, the driver's driving experience and driving space saving need to be improved. Summary of the invention

[0003] The purpose of the present invention is to provide a multifunctional wire-controlled steering feel simulator, which has the effects of increasing driving experience, saving driving space and improving comfort.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: a multifunctional wire-controlled steering feel simulator, comprising a steering column and an upper steering core shaft assembly arranged in the steering column, the upper steering core shaft assembly is connected to a steering wheel through a spline, and a speed reduction mechanism, a telescopic adjustment mechanism, an angle adjustment mechanism and an angle limiting mechanism are arranged on the steering column, the speed reduction mechanism is used to provide damping for the steering wheel to ensure road feel, the telescopic adjustment mechanism is used to automatically adjust the telescopic steering wheel, the angle adjustment mechanism is used to adjust the steering wheel angle, and the angle limiting mechanism is used to limit the number of turns of the steering wheel.

[0005] By adopting the above technical solution, the signal from the main controller can be converted into torque through the deceleration mechanism to provide damping and ensure road feel. The telescopic adjustment mechanism can automatically adjust the telescopic steering wheel, saving driving space and improving comfort. The angle adjustment mechanism can adjust the angle of the steering wheel up and down, and the angle limit mechanism is used to limit the number of turns of the steering wheel to meet the needs of different drivers and improve driving comfort, safety and controllability.

[0006] The present invention is further configured as follows: a transmission shaft rotates inside the steering column, one end of the transmission shaft is connected to the upper steering core shaft assembly via a spline, and the reduction mechanism includes a reduction turbine fixed to the transmission shaft, a reduction motor installed on the steering column, and a reduction worm fixed to the output end of the reduction motor and meshing with the reduction turbine.

[0007] By adopting the above technical solution, according to the sensor information such as steering angle, torque, vehicle speed, etc., the reduction motor drives the reduction worm to rotate, thereby driving the reduction turbine and the drive shaft to rotate, and then the upper steering spindle assembly and the steering wheel rotate, providing the driver with corresponding road feel information and optimizing the driving experience.

[0008] The present invention is further configured as follows: the angle limiting mechanism comprises an adding and subtracting ring, and one end of the transmission shaft away from the upper steering spindle assembly is connected to the adding and subtracting ring.

[0009] By adopting the above technical solution, when the transmission shaft rotates, it will also synchronously drive the adding and subtracting ring to rotate. The multiple layers of adding and subtracting rings rotate layer by layer until the last layer of adding and subtracting rings stops rotating, thereby achieving a mechanical angle limiting effect, thereby limiting the number of rotations of the steering wheel.

[0010] The present invention is further configured as follows: the telescopic adjustment mechanism includes an axial motor installed on the steering column, an axial worm fixed to the output end of the axial motor, an axial screw rotatably connected to the steering column, and an axial turbine fixed to the axial screw and engaged with the axial worm; a sleeve that rotates and slides in the steering column is provided outside the upper steering core shaft assembly through a bearing, and an axial threaded block that is threadedly connected to the axial screw is fixed to the outer wall of the sleeve.

[0011] By adopting the above technical solution, the axial motor rotates through the worm to drive the axial turbine and the axial screw to rotate, thereby driving the axial threaded block, the sleeve and the upper steering core shaft assembly to move relative to the steering column. The upper steering core shaft assembly moves relative to the drive shaft through the spline, thereby achieving axial adjustment, enhancing the driver's sense of control over the vehicle, and making the control more flexible.

[0012] The present invention is further configured as follows: it also includes a mounting plate, the steering column is hinged to the mounting plate, and the angle adjustment mechanism drives the steering column to rotate relative to the mounting plate.

[0013] By adopting the above technical solution, the mounting plate is fixed in the vehicle body, and the angle adjustment mechanism drives the steering column to rotate to adjust the angle of the steering wheel to meet the needs of different drivers and improve driving comfort, safety and controllability.

[0014] The present invention is further configured as follows: the steering column is fixed with an adjustment frame hinged to the mounting plate, the angle adjustment mechanism includes an angle motor installed on the steering column, an angle worm fixed to the output end of the angle motor, an angle screw rotatably connected to the steering column, and an angle turbine fixed to the angle screw and meshing with the angle worm, and the adjustment frame is fixed with an angle threaded block threadedly connected to the angle screw.

[0015] By adopting the above technical solution, the angle motor drives the angle turbine and the angle screw to rotate through the angle worm, and then the angle screw drives the angle thread block to move, so that the angle thread block drives the adjustment frame and the steering column to rotate relative to the mounting plate to adjust the upper steering core shaft assembly and then adjust the steering wheel angle, thereby improving the driving experience.

[0016] The present invention is further configured as follows: the angle motor, the axial motor and the reduction motor are all connected to a controller.

[0017] By adopting the above technical solution, the sensors of steering angle, torque, speed, etc. in the vehicle are connected to the controller and the information is sent to the controller, which then controls the operation of multiple motors to achieve more precise motion coordination, improve the performance and stability of the overall system, and improve system efficiency.

[0018] The beneficial effects of the present invention are:

[0019] 1. According to the information from sensors such as steering angle, torque, and vehicle speed, the reduction motor drives the reduction worm to rotate, which in turn drives the reduction turbine and the transmission shaft to rotate, and then the upper steering spindle assembly and the steering wheel to rotate, providing the driver with corresponding road feeling information and optimizing the driving experience;

[0020] 2. The axial motor rotates through the worm to drive the axial turbine and the axial screw to rotate, and then drives the axial threaded block and the upper steering core shaft assembly to move relative to the steering column, thereby achieving axial adjustment, enhancing the driver's sense of control over the vehicle, and making the control more flexible;

[0021] 3. The angle motor drives the angle turbine and angle screw to rotate through the angle worm, and then the angle screw drives the angle thread block to move, so that the angle thread block drives the adjustment frame and the steering column to rotate relative to the mounting plate to adjust the upper steering spindle assembly and then adjust the steering wheel angle to improve the driving experience;

[0022] 4. The sensors of the steering angle, torque, speed, etc. in the car are connected to the controller, which sends the information to the controller, and then the controller controls the operation of multiple motors to achieve more precise motion coordination, improve the performance and stability of the overall system, and improve the system efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the structure of the present invention.

[0025] Figure 2 The present invention is a schematic diagram of the connection relationship between the steering column, the sleeve and the upper steering core shaft assembly.

[0026] Figure 3 It is a schematic diagram of the connection relationship between the speed reduction mechanism, the steering column, the transmission shaft and the upper steering core shaft assembly in the present invention.

[0027] Figure 4 It is a schematic diagram of the connection relationship between the telescopic adjustment mechanism and the steering column in the present invention.

[0028] Figure 5 It is a structural schematic diagram of the telescopic adjustment mechanism in the present invention.

[0029] Figure 6 It is a schematic diagram of the connection relationship between the angle adjustment mechanism and the steering column in the present invention.

[0030] Figure 7 It is a structural schematic diagram of the angle adjustment mechanism in the present invention.

[0031] In the figure, 1, steering column; 2, upper steering spindle assembly; 3, speed reduction mechanism; 31, speed reduction turbine; 32, speed reduction motor; 33, speed reduction worm; 4, telescopic adjustment mechanism; 41, axial motor; 42, axial worm; 43, axial lead screw; 44, axial turbine; 45, axial threaded block; 5, angle adjustment mechanism; 51, angle motor; 52, angle worm; 53, angle lead screw; 54, angle turbine; 55, angle threaded block; 6, transmission shaft; 7, mounting plate; 8, sleeve; 9, bearing; 10, adjustment frame; 11, angle limit mechanism; 111, adding and subtracting ring; 111a, first layer adding and subtracting ring; 111b, second layer adding and subtracting ring; 111c, third layer adding and subtracting ring; 111d, fourth layer adding and subtracting ring; 111e, limit rod; 111f, limit groove. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1, a multifunctional wire-controlled steering feel simulator, comprises a steering column 1 and an upper steering spindle assembly 2 arranged in the steering column 1, the upper steering spindle assembly 2 is connected to a steering wheel via a spline, the steering column 1 is provided with a reduction mechanism 3, a telescopic adjustment mechanism 4, an angle adjustment mechanism 5 and an angle limiting mechanism 11, the reduction mechanism 3 is used to provide damping for the steering wheel to ensure road feel, the telescopic adjustment mechanism 4 is used to automatically adjust the telescopic steering wheel, the angle adjustment mechanism 5 is used to adjust the steering wheel angle, and the angle limiting mechanism 11 is used to limit the number of rotations of the steering wheel.

[0034] like Figure 1-3 As shown, a transmission shaft 6 rotates in the steering column 1, and one end of the transmission shaft 6 is connected to the upper steering spindle assembly 2 through a spline. The reduction mechanism 3 includes a reduction turbine 31 fixed to the transmission shaft 6, a reduction motor 32 installed on the steering column 1, and a reduction worm 33 fixed to the output end of the reduction motor 32 and meshing with the reduction turbine 31. The angle limiting mechanism 11 includes an adding and subtracting ring 111. The end of the transmission shaft 6 away from the upper steering spindle assembly 2 is connected to the adding and subtracting ring 111. The reduction motor 32 drives the reduction worm 33 to rotate, thereby driving the reduction turbine 31 and the transmission shaft 6 to rotate, and then the upper steering spindle assembly 2 and the steering wheel rotate. The upper steering spindle assembly 2 rotates relative to the sleeve 8 through the bearing 9 to provide the driver with corresponding road feel information. When the transmission shaft 6 rotates, the adding and subtracting ring 111 will also be driven to rotate synchronously. The adding and subtracting ring 111 includes multiple layers arranged along the axial direction of the transmission shaft 6, and each layer of the adding and subtracting ring 111 is fixed with a limiting rod 111e. The first layer of adding The reducing ring 111a is fixed to the transmission shaft 6, and the other layers of adding and subtracting rings 111 are sequentially sleeved on the transmission shaft 6. Under the drive of the transmission shaft 6, when the transmission shaft 6 drives the first layer of adding and subtracting ring 111a to rotate, the limiting rod 111e on the first layer of adding and subtracting ring 111a contacts the second layer of adding and subtracting ring 111b to drive the second layer of adding and subtracting ring 111b to rotate, and then the limiting rod 111e on the second layer of adding and subtracting ring 111b contacts the third layer of adding and subtracting ring 111c to drive the third layer of adding and subtracting ring 111c to rotate. The ring 111c rotates, and then the limiting rod 111e on the third-layer adding and subtracting ring 111c contacts the fourth-layer adding and subtracting ring 111d to drive the fourth-layer adding and subtracting ring 111d to rotate, and a limiting groove 111f is provided on the steering column 1, until the limiting rod 111e on the fourth-layer adding and subtracting ring 111d is about to contact the edge of the limiting groove 111f, and the multi-layer adding and subtracting ring 111 rotates layer by layer until the last layer of adding and subtracting ring 111d stops rotating, thereby achieving a mechanical angle limiting effect.

[0035] like Figure 4-5As shown, the telescopic adjustment mechanism 4 includes an axial motor 41 installed on the steering column 1, an axial worm 42 fixed to the output end of the axial motor 41, an axial screw 43 rotatably connected to the steering column 1, and an axial turbine 44 fixed to the axial screw 43 and meshing with the axial worm 42. The upper steering core shaft assembly 2 is fixed with an axial threaded block 45 threadedly connected to the axial screw 43. The rotation of the axial motor 41 drives the axial turbine 44 and the axial screw 43 to rotate through the worm, thereby driving the axial threaded block 45, the sleeve 8 and the upper steering core shaft assembly 2 to move relative to the steering column 1. The upper steering core shaft assembly 2 moves relative to the transmission shaft 6 through the spline, thereby achieving axial adjustment, enhancing the driver's sense of control over the vehicle, and making the control more flexible.

[0036] like Figure 6-7 As shown, it also includes a mounting plate 7, a steering column 1 is hinged to the mounting plate 7, an angle adjustment mechanism 5 drives the steering column 1 to rotate relative to the mounting plate 7, the steering column 1 is fixed with an adjustment frame 10 hinged to the mounting plate 7, the angle adjustment mechanism 5 includes an angle motor 51 installed on the steering column 1, an angle worm 52 fixed to the output end of the angle motor 51, an angle screw 53 rotatably connected to the steering column 1 and an angle turbine 54 fixed to the angle screw 53 and engaged with the angle worm 52, the adjustment frame 10 is fixed with an angle thread block 55 threadedly connected to the angle screw 53, the mounting plate 7 is fixed in the vehicle body, the angle motor 51 drives the angle turbine 54 and the angle screw 53 to rotate through the angle worm 52, and then the angle screw 53 drives the angle thread block 55 to move, so that the angle thread block 55 drives the adjustment frame 10 and the steering column 1 to rotate relative to the mounting plate 7 to adjust the upper steering spindle assembly 2 and then adjust the steering wheel angle, thereby improving the driving experience.

[0037] Furthermore, the angle motor 51, the axial motor 41 and the reduction motor 32 are all connected to the controller, and the sensors of the angle, torque, speed, etc. in the vehicle are connected to the controller, and the information is sent to the controller, which then controls the operation of multiple motors to achieve more precise motion coordination and improve the performance and stability of the overall system.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional wire-controlled steering feel simulator, comprising a steering column (1) and an upper steering spindle assembly (2) arranged in the steering column (1), wherein the upper steering spindle assembly (2) is connected to a steering wheel via a spline, and is characterized in that: The steering column (1) is provided with a speed reduction mechanism (3), a telescopic adjustment mechanism (4), an angle adjustment mechanism (5) and an angle limiting mechanism (11); the speed reduction mechanism (3) is used to provide damping for the steering wheel to ensure road feel; the telescopic adjustment mechanism (4) is used to automatically adjust the telescopic steering wheel; the angle adjustment mechanism (5) is used to adjust the angle of the steering wheel; and the angle limiting mechanism (11) is used to limit the number of rotations of the steering wheel.

2. A multifunctional wire-controlled steering feel simulator according to claim 1, characterized in that: A transmission shaft (6) rotates inside the steering column (1), one end of the transmission shaft (6) is connected to the upper steering spindle assembly (2) via a spline, and the reduction mechanism (3) comprises a reduction turbine (31) fixed to the transmission shaft (6), a reduction motor (32) mounted on the steering column (1), and a reduction worm (33) fixed to the output end of the reduction motor (32) and meshing with the reduction turbine (31).

3. A multifunctional wire-controlled steering feel simulator according to claim 2, characterized in that: The angle limiting mechanism (11) comprises an adding and subtracting ring (111), and one end of the transmission shaft (6) away from the upper steering spindle assembly (2) is connected to the adding and subtracting ring (111).

4. A multifunctional wire-controlled steering feel simulator according to claim 3, characterized in that: The telescopic adjustment mechanism (4) comprises an axial motor (41) mounted on the steering column (1), an axial worm (42) fixed to the output end of the axial motor (41), an axial screw (43) rotatably connected to the steering column (1), and an axial turbine (44) fixed to the axial screw (43) and meshing with the axial worm (42); the upper steering spindle assembly (2) is provided with a sleeve (8) that is rotatably slidable in the steering column (1) via a bearing (9); an axial threaded block (45) that is threadedly connected to the axial screw (43) is fixed to the outer wall of the sleeve (8).

5. The multifunctional wire-controlled steering feel simulator according to claim 4, characterized in that: It also comprises a mounting plate (7), the steering column (1) is hinged to the mounting plate (7), and the angle adjustment mechanism (5) drives the steering column (1) to rotate relative to the mounting plate (7).

6. A multifunctional wire-controlled steering feel simulator according to claim 5, characterized in that: The steering column (1) is fixed with an adjustment frame (10) hinged to the mounting plate (7); the angle adjustment mechanism (5) comprises an angle motor (51) mounted on the steering column (1), an angle worm (52) fixed to the output end of the angle motor (51), an angle screw (53) rotatably connected to the steering column (1), and an angle turbine (54) fixed to the angle screw (53) and meshing with the angle worm (52); the adjustment frame (10) is fixed with an angle thread block (55) threadedly connected to the angle screw (53).

7. A multifunctional wire-controlled steering feel simulator according to claim 6, characterized in that: The angle motor (51), the axial motor (41) and the reduction motor (32) are all connected to a controller.

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