Intelligent automobile steer-by-wire system redundancy protection device

Abstract

The utility model relates to the technical field of automobile engineering, in particular to an intelligent automobile steer-by-wire system redundancy protection device which comprises a mechanical control assembly, the mechanical control assembly comprises a steering wheel and a second connecting rod, the bottom of the steering wheel is fixedly connected with a first connecting rod, and a regulation and control assembly is arranged between the first connecting rod and the second connecting rod. A drive-by-wire adjusting assembly is further arranged below the steering wheel and comprises a signal transmission line. When the device is used and the drive-by-wire is normal, the first connecting rod and the second connecting rod are separated, the steering wheel rotates and transmits a signal to the controller in real time through the steering sensor, the driving motor accurately controls the adjusting gear to rotate on the steering rod, accurate steering is achieved, and if a drive-by-wire steering system breaks down, the two electric push rods are rapidly started to push the connecting cylinder to move, and the steering wheel is driven to rotate. Physical connection of the first connecting rod and the second connecting rod is achieved, it is ensured that a driver can control the vehicle through a steering wheel, and driving safety is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile engineering technology, concretely is a kind of intelligent automobile drive-by-wire steering system redundancy protection device. BACKGROUND

[0002] Drive-by-wire steering is to detect the steering data of driver by sensor, then signal is transmitted to the ECU on vehicle through data bus, and feedback command is obtained from steering control system, steering control system also obtains the steering instruction of driver from steering mechanism, and wheel condition is obtained from steering system, to command the movement of entire steering system.

[0003] However, although drive-by-wire steering system is advanced, there is still the risk of system failure, once system fails, driver can lose effective control of vehicle, which can lead to serious traffic accidents, and poses a serious threat to driving safety. UTILITY MODEL CONTENTS

[0004] The utility model is to provide a kind of intelligent automobile drive-by-wire steering system redundancy protection device to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of intelligent automobile drive-by-wire steering system redundancy protection device, including mechanical control component, the mechanical control component includes steering wheel and second connecting rod, the bottom of the steering wheel is fixedly connected with first connecting rod, the first connecting rod is provided with control component between second connecting rod, the lower of the steering wheel is also provided with drive-by-wire adjustment component, the drive-by-wire adjustment component includes signal transmission line, the signal transmission line passes through control component and is connected with steering wheel, the other end of the second connecting rod is connected with steering mechanism.

[0007] Preferably, the steering mechanism includes third connecting rod, the third connecting rod is provided with shaft coupling between second connecting rod, the third connecting rod is connected with second connecting rod by shaft coupling, the end of the third connecting rod away from second connecting rod is fixedly connected with adjusting gear by shaft coupling;

[0008] The steering mechanism also includes steering rod and sleeve, the both ends of the steering rod are fixed with automobile tire respectively, the sleeve is sleeved on the middle part of steering rod, adjusting tooth is set on the surface of steering rod in sleeve, the adjusting gear is rotatably connected in sleeve, and adjusting gear is engaged with the tooth on steering rod.

[0009] Preferably, the wire control adjusting assembly comprises a signal transmission wire and a controller, the signal transmission wire is fixedly connected to the controller, a steering sensor is arranged on the steering wheel, and the other end of the signal transmission wire is connected to the steering sensor on the steering wheel.

[0010] Preferably, the wire control adjusting assembly further comprises a control box, the control box is installed on one side of the sleeve, a driving motor is arranged in the control box, and the driving motor is connected to the controller through a connecting wire.

[0011] An output end of the driving motor is fixedly connected with a one-way rotating shaft through a shaft coupling, and one end of the one-way rotating shaft, away from the driving motor, is connected to the adjusting gear in the sleeve.

[0012] Preferably, the adjusting assembly comprises an adjusting box, the adjusting box is installed below the steering wheel, the second connecting rod and the first connecting rod are penetrated through the adjusting box and extend into the adjusting box at the ends close to each other, and a switching mechanism is arranged between the second connecting rod and the first connecting rod.

[0013] Preferably, the switching mechanism comprises a fixed disc, the fixed disc is installed on the first connecting rod, a connecting cylinder is arranged directly below the fixed disc, a top portion of the connecting cylinder is clamped to the first connecting rod, and a return spring is arranged between the fixed disc and the connecting cylinder.

[0014] Two electric push rods are further arranged in the adjusting box, the two electric push rods are installed between the fixed disc and the connecting cylinder, and output ends of the electric push rods are fixed to the top portion of the connecting cylinder.

[0015] Compared with the prior art, the wire control adjusting assembly has the following beneficial effects:

[0016] 1. When the wire control steering is normally working, the first connecting rod and the second connecting rod are in a disengaged state, the rotation of the steering wheel is transmitted to the controller in real time through the steering sensor, and then the driving motor responds and accurately controls the rotation of the adjusting gear on the steering rod, so that the precise steering of the vehicle is realized.

[0017] 2. When the wire control steering system fails, the two electric push rods are quickly started and push the connecting cylinder to move, so that the first connecting rod and the second connecting rod are physically connected, which ensures that the driver can still control the vehicle by rotating the steering wheel in the case of wire control failure, avoids the risk of steering out of control due to system failure, and greatly improves the driving safety. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a first view angle schematic view of the utility model;

[0019] Figure 2 is a partial structure schematic view of the mechanical control assembly in the utility model;

[0020] Figure 3 is a partial structure schematic view in the sleeve of the utility model;

[0021] Figure 4 is a structure schematic view in the adjusting box of the utility model.

[0022] In the figure: 1, mechanical control assembly;11, steering wheel;12, second connecting rod;13, third connecting rod;14, shaft coupling;15, steering rod;16, sleeve;17, adjusting gear;18, first connecting rod;2, wire control adjusting assembly;21, signal transmission line;22, controller;23, control box;24, driving motor;3, regulation and control assembly;31, adjusting box;32, fixed disc;33, connecting cylinder;34, reset spring;35, electric push rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Embodiment one, please refer to Figures 1-4The application discloses a redundant protection device for a steer-by-wire system of an intelligent automobile, which comprises a mechanical control component 1, the mechanical control component 1 comprises a steering wheel 11 and a second connecting rod 12, the bottom of the steering wheel 11 is fixedly connected with a first connecting rod 18, a regulating component 3 is arranged between the first connecting rod 18 and the second connecting rod 12, a steer-by-wire regulating component 2 is further arranged below the steering wheel 11, the steer-by-wire regulating component 2 comprises a signal transmission line 21, the signal transmission line 21 is connected with the steering wheel 11 through the regulating component 3, a steering mechanism is connected to the other end of the second connecting rod 12, the steering mechanism comprises a third connecting rod 13, a coupling 14 is arranged between the third connecting rod 13 and the second connecting rod 12, the third connecting rod 13 is connected with the second connecting rod 12 through the coupling 14, an adjusting gear 17 is fixedly connected to the end of the third connecting rod 13 away from the second connecting rod 12 through the coupling 14, the steering mechanism further comprises a steering rod 15 and a sleeve 16, the two ends of the steering rod 15 are fixedly connected with automobile tires respectively, the sleeve 16 is sleeved on the middle part of the steering rod 15, adjusting teeth are arranged on the surface of the steering rod 15 in the sleeve 16, the adjusting gear 17 is rotatably connected in the sleeve 16, and the adjusting gear 17 is engaged with the teeth on the steering rod 15.

[0025] When the automobile is running and in the steer-by-wire state, the first connecting rod 18 is in a disengaged state with the second connecting rod 12, at this time, the steering wheel 11 is rotated, the steering wheel 11 drives the steer-by-wire regulating component 2 to start, and the steering is adjusted through the steer-by-wire regulating component 2.

[0026] When the automobile steer-by-wire system fails, the regulating component 3 is adjusted to connect the second connecting rod 12 with the first connecting rod 18, at this time, the steering wheel 11 is rotated, the steering wheel 11 drives the second connecting rod 12 to rotate through the first connecting rod 18, the second connecting rod 12 drives the adjusting gear 17 to rotate in the sleeve 16 through the third connecting rod 13 and the coupling 14, and the adjusting gear 17 drives the steering rod 15 to move left and right through the teeth on the steering rod 15, so that the steering of the automobile is realized.

[0027] Embodiment two, please refer to Figures 1-3The by-wire adjusting assembly 2 comprises a signal transmission line 21 and a controller 22, the signal transmission line 21 is fixedly connected to the controller 22, a steering sensor is arranged on the steering wheel 11, the other end of the signal transmission line 21 is connected to the steering sensor on the steering wheel 11, the by-wire adjusting assembly 2 further comprises a control box 23, the control box 23 is installed on one side of the sleeve 16, a driving motor 24 is arranged in the control box 23, the driving motor 24 is connected to the controller 22 through a connecting line, the output end of the driving motor 24 is fixedly connected with a one-way rotating shaft through a coupling, and the one-way rotating shaft is connected with the adjusting gear 17 in the sleeve 16 at the end away from the driving motor 24, the regulating assembly 3 comprises an adjusting box 31, the adjusting box 31 is installed below the steering wheel 11, the second connecting rod 12 and the first connecting rod 18 are penetrated through the adjusting box 31 and extend into the adjusting box 31 at the ends close to each other, and a switching mechanism is arranged between the second connecting rod 12 and the first connecting rod 18.

[0028] When the by-wire steering is performed, the steering sensor is started when the steering wheel 11 rotates, the steering sensor sends a signal to the controller 22 through the signal transmission line 21, the controller 22 controls the driving motor 24 to start, and the driving motor 24 drives the adjusting gear 17 to rotate on the steering rod 15 under the action of the one-way rotating shaft, so that the steering operation is realized.

[0029] In the third embodiment, please refer to Figure 1 、 Figure 2 and Figure 4 The switching mechanism comprises a fixed disc 32, the fixed disc 32 is installed on the first connecting rod 18, a connecting cylinder 33 is arranged below the fixed disc 32, the top of the connecting cylinder 33 is clamped on the first connecting rod 18, a reset spring 34 is arranged between the fixed disc 32 and the connecting cylinder 33, two electric push rods 35 are further arranged in the adjusting box 31, the two electric push rods 35 are installed between the fixed disc 32 and the connecting cylinder 33, and the output end of the electric push rod 35 is fixed to the top of the connecting cylinder 33.

[0030] When the by-wire steering fails, the two electric push rods 35 are started, the two electric push rods 35 move downward and push the connecting cylinder 33 to move at the same time, so that the connecting cylinder 33 moves towards the second connecting rod 12 until the bottom of the connecting cylinder 33 is inserted into the second connecting rod 12, the first connecting rod 18 and the second connecting rod 12 are connected through the connecting cylinder 33, at this time, the steering wheel 11 is rotated, the steering wheel 11 can drive the second connecting rod 12 to rotate through the first connecting rod 18, and the vehicle is controlled to realize the steering work.

[0031] Working principle: when the car is running, when in the state of drive-by-wire, the first connecting rod 18 and the second connecting rod 12 are in the disengaged state, when the steering wheel 11 rotates, the steering inductor is started, the steering inductor sends a signal to the controller 22 through the signal transmission line 21, so that the controller 22 controls the driving motor 24 to start, after the driving motor 24 starts, the adjusting gear 17 is driven to rotate on the steering rod 15 under the action of the one-way rotating shaft, so as to realize the steering operation;

[0032] When the drive-by-wire steering fails, two electric push rods 35 are started, the two electric push rods 35 move downward and push the connecting barrel 33 to move at the same time, so that the connecting barrel 33 moves towards the direction close to the second connecting rod 12, until the bottom of the connecting barrel 33 is inserted into the second connecting rod 12, the first connecting rod 18 and the second connecting rod 12 are connected through the connecting barrel 33, at this time, the steering wheel 11 is rotated, the steering wheel 11 can drive the second connecting rod 12 to rotate through the first connecting rod 18, the second connecting rod 12 drives the adjusting gear 17 to rotate in the sleeve 16 through the third connecting rod 13 and the shaft coupling 14, the adjusting gear 17 drives the steering rod 15 to move left and right through the teeth on the steering rod 15, so as to realize the steering of the vehicle.

[0033] It should be noted that the devices in the present application are common market devices, and can be selected according to needs during specific use, and the circuit connection relationship of each device is a simple series and parallel connection circuit, and there is no innovation point in the circuit connection part, and the person skilled in the art can easily realize it, which belongs to the prior art, and will not be described in detail.

[0034] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A redundancy protection device for an intelligent vehicle steer-by-wire system, characterized in that: Including mechanical control assembly (1), the mechanical control assembly (1) includes steering wheel (11) and second connecting rod (12), the bottom of the steering wheel (11) is fixedly connected with first connecting rod (18), and the first connecting rod (18) is provided with regulating assembly (3) between second connecting rod (12), the lower of the steering wheel (11) is also provided with drive-by-wire adjusting assembly (2), the drive-by-wire adjusting assembly (2) includes signal transmission line (21), the signal transmission line (21) is connected with the steering wheel (11) through regulating assembly (3), and the other end of the second connecting rod (12) is connected with steering mechanism. 2.The intelligent automobile steer-by-wire system redundancy protection device according to claim 1, characterized in that: The steering mechanism includes third connecting rod (13), the third connecting rod (13) is connected with second connecting rod (12) through coupling (14), the third connecting rod (13) is connected with second connecting rod (12) through coupling (14), and the end of the third connecting rod (13) away from second connecting rod (12) is fixedly connected with adjusting gear (17) through coupling (14); The steering mechanism further includes steering rod (15) and sleeve (16), both ends of the steering rod (15) are fixed with automobile tire respectively, the sleeve (16) is sleeved on the middle part of the steering rod (15), the surface of the steering rod (15) in the sleeve (16) is provided with adjusting teeth, and the adjusting gear (17) is rotatably connected in the sleeve (16), and the adjusting gear (17) is engaged with the teeth on the steering rod (15). 3.The intelligent automobile steer-by-wire system redundancy protection device according to claim 1, characterized in that: The drive-by-wire adjusting assembly (2) includes signal transmission line (21) and controller (22), the signal transmission line (21) is fixedly connected to the controller (22), the steering wheel (11) is provided with steering inductor, and the other end of the signal transmission line (21) is connected with the steering inductor on the steering wheel (11).

4. The redundant protection device for a steer-by-wire system of a smart vehicle according to claim 1, wherein: The drive-by-wire adjusting assembly (2) further includes control box (23), the control box (23) is installed on one side of the sleeve (16), and the control box (23) is provided with driving motor (24) in the control box (23), and the driving motor (24) is connected with the controller (22) through connecting line; The output end of the driving motor (24) is fixedly connected with one-way rotating shaft through coupling, and the end of the one-way rotating shaft away from the driving motor (24) is connected with the adjusting gear (17) in the sleeve (16).

5. The redundant protection device for a steer-by-wire system of an intelligent vehicle according to claim 1, wherein: The regulating assembly (3) includes adjusting box (31), the adjusting box (31) is installed below the steering wheel (11), the end of the second connecting rod (12) and the first connecting rod (18) close to each other penetrates the adjusting box (31) and extends to the inside of the adjusting box (31), and the second connecting rod (12) and the first connecting rod (18) are provided with switching mechanism. 6.The intelligent automobile steer-by-wire system redundancy protection device according to claim 5, characterized in that: The switching mechanism comprises a fixed disc (32) mounted on the first connecting rod (18), a connecting cylinder (33) arranged below the fixed disc (32), the top of the connecting cylinder (33) being clamped on the first connecting rod (18), and a reset spring (34) arranged between the fixed disc (32) and the connecting cylinder (33); Two electric push rods (35) are further arranged in the adjusting box (31), both of the electric push rods (35) being mounted between the fixed disc (32) and the connecting cylinder (33), and the output end of the electric push rod (35) being fixed to the top of the connecting cylinder (33).

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