An electronically controlled steering mechanism and system for intelligent driving of a vehicle

Abstract

The present invention relates to the technical field of steering gears, and in particular, to an electronically controlled steering mechanism and system for intelligent driving of vehicles. The electronically controlled steering mechanism for intelligent driving of vehicles comprises a housing assembly, a drive assembly, and a steering assembly. The drive assembly comprises a drive unit and a transmission unit; the transmission unit comprises a transmission rod, a transmission module, and a rolling body; part of the steering assembly is in a space surrounded by the housing assembly; the electronically controlled steering mechanism for intelligent driving of vehicles comprises a first state and a second state; the first state comprises that the force exerted by the steering assembly on the transmission module is less than the first force, and the transmission module is spaced apart from the inner circumferential wall of the housing assembly; the second state comprises that the force exerted by the steering assembly on the transmission module is greater than the second force, and the side of the transmission module away from the steering assembly abuts against the inner circumferential wall of the side of the housing assembly away from the steering assembly; the first force is less than the second force. In this way, the problem of high screw strength requirements in the electronically controlled steering mechanism for intelligent driving of vehicles is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of steering gears, and in particular to an electronically controlled steering mechanism and system for intelligent vehicle driving. Background Art

[0002] The vehicle intelligent driving steering gear is a device that can automatically adjust the steering angle of the steering wheel according to the instructions issued by the vehicle control system in the intelligent driving mode. Its basic principle is to convert the instructions of the control unit into mechanical movement through the transmission and processing of electronic signals to realize the steering of the steering wheel. For example, in the automatic parking system, the vehicle intelligent driving steering gear will accurately control the steering angle of the steering wheel according to the parking space information and vehicle position sensed by the sensor to help the vehicle smoothly enter the parking space. The steering gear is the most important component in the automobile steering system, also known as the steering gear and the steering gear. The vehicle intelligent driving steering gear includes gear rack type, recirculating ball type, worm crank finger pin type, recirculating ball crank finger pin type, worm roller type, etc. Among them, the recirculating ball steering gear increases the force transmitted from the steering wheel to the steering transmission mechanism and changes the direction of force transmission. The recirculating ball steering gear has two-stage transmission pairs, the first stage is the screw-nut transmission pair, and the second stage is the rack-sector (or slider-crank pin) transmission pair. There are many steel balls in the spiral groove between the screw and the nut, which form rolling friction between the screw and the nut. The function of the steel balls is to convert the sliding friction between the screw and the nut into rolling friction, thereby greatly reducing the friction and making the steering operation easier.

[0003] However, in the process of intelligent driving, the steering gear receives steering signals and executes steering commands more frequently. In the process of the vehicle's intelligent driving steering gear executing commands, a screw is required to drive a nut to realize the steering of other parts of the vehicle. Therefore, the screw is subjected to a large force, so long-term use can easily cause damage to the screw. Summary of the invention

[0004] In order to solve the problem of high screw strength requirement in an electronically controlled steering mechanism for intelligent driving of a vehicle, the present invention provides an electronically controlled steering mechanism and system for intelligent driving of a vehicle.

[0005] In a first aspect, the present invention provides an electronically controlled steering mechanism for intelligent driving of a vehicle, the electronically controlled steering mechanism for intelligent driving of a vehicle comprising:

[0006] Housing components;

[0007] A drive assembly, the drive assembly comprising a drive unit and a transmission unit; the drive unit is detachably connected to the housing assembly; the transmission unit is disposed in a hollow cavity of the housing assembly; the transmission unit comprises a transmission rod, a transmission module, and a rolling body; the transmission rod is drivingly connected to the drive unit; the transmission rod and the transmission module surround an inner raceway; a portion of the rolling body moves in the inner raceway; the transmission rod drives the transmission module to move along the axial direction of the transmission rod through the rolling body;

[0008] A steering assembly, part of which is disposed in a space surrounded by the housing assembly; the transmission module drives the steering assembly to rotate around a central axis of the steering assembly;

[0009] The electronically controlled steering mechanism includes a first state and a second state; the first state includes that the force applied to the transmission module by the steering assembly is smaller than the first force, and the transmission module is spaced apart from the inner circumferential wall of the outer shell assembly; the second state includes that the force applied to the transmission module by the steering assembly is larger than the second force, and the side of the transmission module away from the steering assembly abuts against the inner circumferential wall of the outer shell assembly away from the steering assembly; the first force is smaller than the second force.

[0010] In some embodiments, the transmission unit further includes an oil tank module; the oil tank module is recessed from an outer circumferential surface of the transmission module toward an inner circumferential surface of the transmission module; the oil tank module is arranged on a side of the transmission module away from the steering assembly.

[0011] In some embodiments, the housing assembly includes a first shell, a second shell, and a third shell; the first shell, the second shell, and the third shell are fixedly connected in sequence; the driving unit is detachably connected to the first shell; the transmission unit is arranged in a space surrounded by the inner circumferential wall of the first shell, the inner circumferential wall of the second shell, and the inner circumferential wall of the third shell; the transmission module moves in the space surrounded by the inner circumferential wall of the first shell, the inner circumferential wall of the second shell, and the inner circumferential wall of the third shell along the axial direction of the transmission module under the drive of the transmission rod;

[0012] When the transmission module moves to the space surrounded by the first shell, the end surface of the transmission module along the axial direction of the transmission module is surrounded by the first shell to form a first containing space, and the oil tank module is connected to the first containing space; when the transmission module moves to the space surrounded by the third shell, the end surface of the transmission module along the axial direction of the transmission module is surrounded by the third shell to form a second containing space, and the oil tank module is connected to the second containing space.

[0013] In some embodiments, the oil tank module includes a first groove; the first groove is recessed from the outer circumferential surface of the transmission module toward the inner circumferential surface of the transmission module; and the first groove runs through both axial ends of the transmission module.

[0014] In some embodiments, the first groove is spaced apart from the transmission module in the direction of the combined force of the steering assembly.

[0015] In some embodiments, the oil tank module further includes a second groove; the second groove is recessed from the outer circumferential surface of the transmission module toward the inner circumferential surface of the transmission module; one end of the second groove is connected to the first groove, and the other end extends away from the first groove; the second groove is respectively spaced apart from both ends of the transmission module along the axial direction of the transmission module;

[0016] When the transmission module moves to the space surrounded by the first shell, the first groove is communicated with the first containing space; when the transmission module moves to the space surrounded by the third shell, the first groove is communicated with the second containing space.

[0017] In some embodiments, the transmission module includes a transmission part and a meshing part; the transmission part is fixedly connected to the meshing part; the transmission part is drivingly connected to the transmission rod; the meshing part is drivingly connected to the steering assembly; the rolling body moves in an inner raceway formed by the transmission rod and the transmission part;

[0018] The first state also includes the transmission part and the inner circumferential wall of the housing component being spaced apart; the second state also includes the transmission part abutting against the inner circumferential wall of the housing component a side away from the steering component.

[0019] In some embodiments, the transmission module also includes an installation groove, a fastening portion, and an outer raceway; the installation groove is recessed from the outer peripheral side of the transmission portion toward the inner peripheral side of the transmission portion; the outer raceway is detachably connected to the transmission portion through the fastening portion; the inner raceway is communicated with the outer raceway; the rolling body moves in the outer raceway and the inner raceway; the outer raceway is arranged in the space surrounded by the installation groove; the fastening portion is arranged in the space surrounded by the installation groove.

[0020] In some embodiments, the ratio of the axial length of the transmission part in the plane where the transmission part is in the direction of the combined force of the steering assembly and away from the steering assembly and abuts against the inner wall of the outer shell assembly to the axial dimension of the transmission part is greater than a set abutment ratio.

[0021] In some embodiments, the driving unit includes a first driving module and a second driving module; the first driving module is detachably connected to the shell assembly; the second driving module is detachably connected to the shell assembly; the first driving module is drivingly connected to the transmission rod; the second driving module is drivingly connected to the transmission rod; the first driving module and the second driving module are arranged at intervals.

[0022] In a second aspect, the present invention provides an electronically controlled steering system for intelligent driving of a vehicle, wherein the electronically controlled steering system for intelligent driving of a vehicle is applied to any of the electronically controlled steering mechanisms for intelligent driving of a vehicle in the first aspect, and the electronically controlled steering system for intelligent driving of a vehicle comprises:

[0023] a vehicle body, the housing assembly of the electric-controlled steering mechanism being detachably connected to the vehicle body;

[0024] A control mechanism, wherein the control mechanism is detachably connected to the vehicle body; the control mechanism is electrically connected to the drive unit of the electric control steering mechanism;

[0025] The rotating mechanism comprises a steering link and a steering wheel; the steering link is movably connected to the vehicle body; the steering link is drivingly connected to the steering assembly; and the steering wheel is drivingly connected to the steering link.

[0026] In order to solve the problem of high screw strength requirement in the electronically controlled steering mechanism for intelligent driving of vehicles, the present invention has the following advantages:

[0027] Due to the difference in friction between the ground and the steering wheel, the transmission module will be subjected to different forces from the steering assembly. When the steering assembly drives the steering mechanism on the vehicle to steer, the transmission module will be subjected to a force from the steering assembly and along the radial direction of the transmission module, causing the transmission rod to deform in the direction away from the steering assembly, that is, the steering assembly will exert a certain reaction force on the transmission module. Therefore, the side of the transmission module away from the steering assembly can be made to abut against the inner circumferential wall of the side of the housing assembly away from the steering assembly, so that the force exerted on the transmission rod can be transmitted to the housing assembly through the transmission module, so that the housing assembly reduces part of the force exerted on the transmission rod, thereby increasing the service life of the transmission rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of an electronically controlled steering mechanism for intelligent driving of a vehicle according to an embodiment is shown;

[0029] Figure 2 A schematic diagram of a drive assembly of an embodiment is shown;

[0030] Figure 3 A schematic diagram of a drive unit according to an embodiment is shown;

[0031] Figure 4 A schematic diagram of a transmission module according to an embodiment is shown;

[0032] Figure 5 A schematic diagram of an inner raceway of a transmission module according to an embodiment is shown;

[0033] Figure 6 A top view of a transmission module according to an embodiment is shown;

[0034] Figure 7 A schematic diagram of an electronically controlled steering system for intelligent driving of a vehicle according to an embodiment is shown.

[0035] Figure markings: housing assembly 01; first shell 11; second shell 12; third shell 13; drive assembly 02; drive unit 21; first drive module 211; first drive part 2111; first drive rod 2112; second drive module 212; second drive part 2121; second drive rod 2122; drive wheel 213; transmission unit 22; transmission rod 221; transmission module 222; transmission part 2221; meshing part 2222; mounting groove 2223; inner raceway 2224; outer raceway 2225; fastening part 2226; oil tank module 223; first groove 2231; second groove 2232; steering assembly 03; steering gear 31; steering part 32; control mechanism 04; rotating mechanism 05; steering link 51; steering wheel 52; vehicle body 06. DETAILED DESCRIPTION

[0036] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0037] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0038] In this embodiment, in the current electronically controlled steering mechanism for intelligent driving of vehicles, the screw and nut are the first-stage transmission pair, and the rack and gear fan are the second-stage transmission pair. The screw and nut transmission pair can be driven by an electric driver, and the steering shaft drives the steering screw to rotate. The steering nut cooperates with the screw, and the threads of the two are not in direct contact, but are made into inner and outer raceways. Many steel balls are installed in the middle of the raceways to achieve rolling friction, thereby converting the rotation of the screw into the axial movement of the nut. A rack is machined on the outer peripheral surface of the steering nut, and the length direction of the rack is parallel to the length direction of the steering nut, and the gear fan and the gear fan shaft are integrated. The steering nut is both a driven part of the first-stage transmission pair and an active part of the second-stage transmission pair. The axial movement of the nut drives the gear fan and the shaft to rotate through the rack, thereby achieving a higher transmission efficiency. However, in a circulating ball steering gear, the force borne by the screw is large, and long-term use can easily cause damage to the screw. In order to solve the above problems, the present invention provides an electronically controlled steering mechanism for intelligent driving of vehicles, such as Figure 1 As shown, the electric control steering mechanism for intelligent driving of a vehicle may include a housing component 01, a drive component 02, and a steering component 03. The electric control steering system for intelligent driving of a vehicle applied in the electric control steering mechanism for intelligent driving of a vehicle may include a control mechanism 04, a rotation mechanism 05, and a vehicle body 06. The rotation mechanism 05 may include a steering wheel 52 and a steering link 51. The control mechanism 04 may control the drive component to drive the steering component 03, and then the steering component drives the steering link 51, and the steering link 51 drives the steering wheel 52, thereby realizing the steering action of the vehicle.

[0039] like Figure 2 As shown, the hollow cavity of the housing component 01 contains grease, which can reduce the wear of the components in the hollow cavity of the housing component 01 during operation. The shell of the housing component 01 can prevent the leakage of grease. The housing component 01 can be used to support and accommodate part of the drive component 02 and part of the steering component 03, providing a structural basis for the entire vehicle intelligent driving electronic steering mechanism.

[0040] like Figure 2 , Figure 3As shown, the drive assembly 02 may include a drive unit 21 and a transmission unit 22. The drive unit 21 may be detachably connected to the housing assembly 01. The transmission unit 22 may be disposed in a hollow cavity of the housing assembly 01, and the transmission unit 22 may include a transmission rod 221, a transmission module 222, and a rolling body. The transmission rod 221 may be connected to the drive unit 21 by driving, and the transmission rod 221 may be surrounded by the transmission module 222 to form an inner raceway 2224, and part of the rolling body moves in the inner raceway 2224. The threads of the transmission rod 221 and the transmission module 222 are not in direct contact, and the transmission rod 221 is driven by the drive unit 21 to rotate, and the transmission rod 221 drives the transmission module 222 to move along the axial direction of the transmission rod 221 through the rolling body. The rolling body converts the sliding friction between the transmission rod 221 and the transmission module 222 into rolling friction, and converts the rotation of the transmission rod 221 into the axial movement of the transmission module 222. In this way, the friction loss between the transmission rod 221 and the transmission module 222 can be greatly reduced, and the transmission efficiency can be improved, thereby ensuring the steering accuracy of the electronically controlled steering mechanism for intelligent driving of the vehicle.

[0041] like Figure 2 As shown, the partial steering assembly 03 can be arranged in the space surrounded by the housing assembly 01. In this way, the housing assembly 01 can protect the partial steering assembly 03, and the grease can lubricate the partial steering assembly 03, thereby reducing the wear of the transmission module 222 and the partial steering assembly 03. The transmission module 222 drives the steering assembly 03 to rotate around the central axis of the steering assembly 03, so that after the electronically controlled steering mechanism for intelligent driving of the vehicle receives the steering instruction from the control mechanism 04, the control mechanism 04 can control the drive assembly 02 to drive the steering assembly 03, and then the steering assembly 03 drives the steering link 51, and the steering link 51 drives the steering wheel 52, thereby realizing the steering action of the vehicle.

[0042] The electric control steering mechanism for intelligent driving of a vehicle may include a first state and a second state. The first state may include that the force exerted by the steering assembly 03 on the transmission module 222 is less than the first force, that is, when the force exerted by the steering assembly 03 on the transmission module 222 is small or the steering assembly 03 does not rotate, the transmission module 222 may be spaced apart from the inner peripheral wall of the housing assembly 01. The second state may include that the force exerted by the steering assembly 03 on the transmission module 222 is greater than the second force, and the side of the transmission module 222 away from the steering assembly 03 may abut against the inner peripheral wall of the housing assembly 01 away from the steering assembly 03. The first force may be less than the second force. Due to the difference in friction between the ground and the steering wheel 52, the force exerted by the steering assembly 03 on the transmission module 222 may be different. When the steering assembly 03 drives the steering wheel 52 on the vehicle to make the vehicle turn, the transmission module 222 will be subjected to a force from the steering assembly 03 and along the radial direction of the transmission module 222, thereby causing the transmission rod 221 to deform in the direction away from the steering assembly 03, that is, the steering assembly 03 will apply a certain reaction force to the transmission module 222. Therefore, the transmission module 222 can be made to abut against the inner wall of the outer shell component 01 on the side away from the steering component 03, so that the force acting on the transmission rod 221 can be transmitted to the outer shell component 01 through the transmission module 222, so that the outer shell component 01 can reduce part of the force acting on the transmission rod 221, thereby increasing the service life of the transmission rod 221.

[0043] In this embodiment, if Figure 4 As shown, the transmission unit 22 may further include an oil tank module 223. The oil tank module 223 is recessed from the outer peripheral surface of the transmission module 222 toward the inner peripheral surface of the transmission module 222. The oil tank module 223 may be arranged on the side of the transmission module 222 away from the steering assembly 03, so that the grease in the hollow chamber of the housing assembly 01 may adhere to the oil tank module 223, and when the transmission module 222 moves axially along the transmission rod 221, the grease in the oil tank module 223 may gradually flow to the side of the transmission module 222 away from the steering assembly 03, thereby reducing the wear of the transmission module 222 and the housing assembly 01.

[0044] In this embodiment, if Figure 2As shown, the housing assembly 01 may include a first shell 11, a second shell 12, and a third shell 13. The first shell 11, the second shell 12, and the third shell 13 may be fixedly connected in sequence, and the drive unit 21 may be detachably connected to the first shell 11. The transmission unit 22 is arranged in a space surrounded by the inner circumferential wall of the first shell 11, the inner circumferential wall of the second shell 12, and the inner circumferential wall of the third shell 13, so as to prevent the transmission unit 22 from being affected by external factors. The transmission module 222 can move in the space surrounded by the inner circumferential wall of the first shell 11, the inner circumferential wall of the second shell 12, and the inner circumferential wall of the third shell 13 along the axial direction of the transmission module 222 under the drive of the transmission rod 221, so that the transmission module 222 transmits a certain driving force to the steering assembly 03, thereby realizing the steering function of the electric control steering mechanism for intelligent driving of the vehicle.

[0045] When the transmission module 222 moves to the space surrounded by the first shell 11, the end face of the transmission module 222 along the axial direction of the transmission module 222 can be surrounded by the first shell 11 to form a first containing space, and the oil tank module 223 can be connected to the first containing space. When the transmission module 222 moves to the space surrounded by the first shell 11, the first containing space is similar to a closed space, and the movement of the transmission module 222 will cause a relatively high pressure in the first containing space. The oil tank module 223 can be connected to the first containing space, so that when the transmission module 222 moves to the space surrounded by the first shell 11, the grease can use the pressure of the first containing space to enter the oil tank module 223. As the transmission module 222 moves, the grease gradually flows to the outer peripheral surface of the transmission module 222, thereby reducing the wear of the transmission module 222. When the transmission module 222 moves to the space surrounded by the third shell 13, the end face of the transmission module 222 along the axial direction of the transmission module 222 can be surrounded by the third shell 13 to form a second containing space, and the oil tank module 223 is connected to the second containing space. When the transmission module 222 moves to the space surrounded by the second shell 12, the second containing space is similar to a closed space, and the movement of the transmission module 222 will cause a relatively high pressure in the second surrounding space. The oil tank module 223 can be connected to the second containing space, so that when the transmission module 222 moves to the space surrounded by the second shell 12, the grease can use the pressure of the second containing space to enter the oil tank module 223. As the transmission module 222 moves, the grease gradually flows to the outer peripheral surface of the transmission module 222, thereby reducing the wear of the transmission module 222.

[0046] In this embodiment, if Figure 4As shown, the oil tank module 223 may include a first groove 2231. The first groove 2231 may be recessed from the outer circumference of the transmission module 222 toward the inner circumference of the transmission module 222, and the first groove 2231 runs through both ends of the axial direction of the transmission module 222. In this way, the grease may flow into the side of the transmission module 222 away from the steering assembly 03 through the first groove 2231, so that the grease may fully lubricate the part of the transmission module 222 abutting against the housing assembly 01, thereby reducing the wear of the transmission module 222 and the housing assembly 01.

[0047] In this embodiment, if Figure 6 As shown, since the direction of the combined force of the steering assembly 03 exerts a relatively large reaction force on the transmission module 222, and the side of the outer peripheral surface of the transmission module 222 close to the first groove 2231 has a relatively small strength, if the first groove 2231 abuts against the inner wall of the housing assembly 01, the transmission module 222 is easily damaged when it moves axially along the transmission rod 221. Therefore, the first groove 2231 and the direction of the combined force of the steering assembly 03 exerted on the transmission module 222 are arranged at intervals. This prevents the stress on the side of the outer peripheral surface of the transmission module 222 close to the first groove 2231 from being concentrated, causing wear to the transmission module 222.

[0048] In this embodiment, if Figure 4 As shown, the oil groove module 223 may also include a second groove 2232. The second groove 2232 may be recessed from the outer circumferential surface of the transmission module 222 toward the inner circumferential surface of the transmission module 222. One end of the second groove 2232 may be connected to the first groove 2231, and the other end may extend in a direction away from the first groove 2231. The second groove 2232 may be spaced apart from the transmission module 222 along the axial direction of the transmission module 222. The second groove 2232 may guide the grease to flow on the outer circumferential surface of the transmission module 222, thereby increasing the contact area between the grease and the transmission module 222. As the transmission module 222 moves along the axial direction of the transmission rod 221, the grease adheres to the space surrounded by the first groove 2231 and the second groove 2232, and then gradually moves to the portion of the transmission module 222 abutting against the housing component 01, so that the grease can fully lubricate the portion of the transmission module 222 abutting against the housing component 01, thereby reducing the wear of the transmission module 222 and the housing component 01.

[0049] When the transmission module 222 moves to the space surrounded by the first shell 11, the first groove 2231 can be connected to the first containing space. When the transmission module 222 moves to the space surrounded by the third shell 13, the first groove 2231 is connected to the second containing space. Thus, the first groove 2231 can guide the grease in the first containing space and the second containing space to adhere to the first groove 2231, and then flow into the second groove 2232, thereby increasing the lubrication area of ​​the grease. Since the lubrication area of ​​the grease is increased, the wear of the housing component 01 and the transmission module 222 can be further reduced.

[0050] In other embodiments, one end of the second groove 2232 may be connected to the first groove 2231, and the other end extends along the circumferential direction of the transmission module 222. The size of the second groove 2232 along the circumferential direction of the transmission module 222 is the same as the size of the transmission module 222. The extension directions of the first groove 2231 and the second groove 2232 are perpendicular to each other. Thus, the first groove 2231 and the second groove 2232 are fully lubricated, and the processing difficulty of the first groove 2231 and the second groove 2232 is reduced.

[0051] In this embodiment, if Figure 2 As shown, the transmission module 222 may include a transmission part 2221 and a meshing part 2222. The transmission part 2221 may be fixedly connected to the meshing part 2222, the transmission part 2221 may be drivingly connected to the transmission rod 221, and the meshing part 2222 is drivingly connected to the steering assembly 03, so that the axial movement of the meshing part 2222 and the transmission part 2221 along the transmission rod 221 can drive the steering assembly 03 to perform a steering action on the steering wheel 52. The rolling body moves in the inner raceway 2224 formed by the transmission rod 221 and the transmission part 2221. After receiving the steering command from the control mechanism 04, the electric control steering mechanism for intelligent driving of the vehicle drives the transmission rod 221 to rotate through the driving unit 21, and the rolling body converts the sliding friction between the transmission rod 221 and the transmission module 222 into rolling friction, and converts the rotation of the transmission rod 221 into the axial movement of the transmission module 222. In this way, the friction loss between the transmission rod 221 and the transmission module 222 can be greatly reduced, and the transmission efficiency can be improved, thereby ensuring the steering accuracy of the electronically controlled steering mechanism for intelligent driving of the vehicle.

[0052] The first state may also include that the transmission part 2221 is spaced apart from the inner peripheral wall of the housing component 01. The second state may also include that the transmission part 2221 is away from the steering component 03 and the inner peripheral wall of the housing component 01 is away from the steering component 03. When the transmission rod 221 does not rotate, or the reaction force of the steering component 03 on the transmission part 2221 is small, the transmission part 2221 and the housing component 01 are in the first state. When the transmission rod 221 rotates faster or the reaction force of the steering component 03 on the transmission part 2221 is large, the transmission part 2221 and the housing component 01 are in the second state, so that the force on the transmission rod 221 can be transmitted to the housing component 01 through the transmission part 2221, so that the housing component 01 can reduce part of the force on the transmission rod 221, thereby improving the service life of the transmission rod 221.

[0053] In this embodiment, if Figure 4 , Figure 5As shown, the transmission module 222 may further include a mounting groove 2223, a fastening portion 2226, and an outer raceway 2225. The mounting groove 2223 is recessed from the outer circumference of the transmission portion 2221 toward the inner circumference of the transmission portion 2221. The outer raceway 2225 is detachably connected to the transmission portion 2221 through the fastening portion 2226, and the fastening portion 2226 can support and fix the outer raceway 2225 to prevent the outer raceway 2225 from loosening when the rolling body is in operation. The inner raceway 2224 is connected to the outer raceway 2225, and the rolling body moves in the outer raceway 2225 and the inner raceway 2224. When assembling the electric steering mechanism for intelligent driving of a vehicle, the rolling body can be assembled into the inner raceway 2224 through the mounting groove 2223, and then the outer raceway 2225 is assembled into the mounting groove 2223, so that the rolling body rolls in the inner raceway 2224 and the outer raceway 2225, so that the transmission module 222 moves along the axial direction of the transmission rod 221. The outer raceway 2225 is arranged in the space surrounded by the mounting groove 2223, and the fastening part 2226 is arranged in the space surrounded by the mounting groove 2223, so as to reduce the volume of the outer raceway 2225 and the fastening part 2226 in the housing component 01, and avoid collision between the outer raceway 2225, the fastening part 2226 and the housing component 01 when the transmission module 222 moves along the axial direction of the transmission rod 221, causing damage to the components, and the mounting groove 2223 can further expand the circulation area of ​​the oil tank module 223. The outer raceway 2225 ensures that the rolling body can stably participate in converting the rotational motion of the transmission rod 221 into the axial motion of the transmission module 222 during the continuous rotation of the transmission rod 221, and can disperse the pressure of the rolling body, thereby extending the service life of the rolling body.

[0054] In this embodiment, if Figure 2 As shown, the installation groove 2223 will result in a smaller contact area between the transmission module 222 and the housing, which will make the transmission module 222 easily damaged. Therefore, the ratio of the length of the plane where the transmission part 2221 is in contact with the inner circumferential wall of the housing assembly 01 and the axial dimension of the transmission part 2221 along the axial direction of the transmission part 2221 in the direction of the combined force of the steering assembly 03 on the transmission part 2221 and the axial dimension of the transmission part 2221 is greater than the set contact ratio. As a result, when the side of the transmission part 2221 away from the steering assembly 03 contacts the inner circumferential wall of the housing assembly 01, there is enough area for support, thereby ensuring the strength of the transmission module 222 itself and avoiding damage to the transmission module 222 due to too small a contact area and concentrated stress.

[0055] In this embodiment, if Figure 2As shown, the drive unit 21 may include a first drive module 211 and a second drive module 212. The first drive module 211 may be detachably connected to the housing assembly 01. The second drive module 212 may be detachably connected to the housing assembly 01. The first drive module 211 may be drivably connected to the transmission rod 221. The second drive module 212 may be drivably connected to the transmission rod 221. The first drive module 211 and the second drive module 212 may be arranged at intervals. In this way, when the first drive module 211 or the second drive module 212 is damaged, the transmission unit 22 may still be driven to provide a force to the steering assembly 03, thereby leaving a certain safety redundancy to avoid the vehicle from being unable to turn when encountering an emergency situation when driving on the road, resulting in a safety accident. At the same time, the control mechanism 04 may selectively drive the first drive module 211 and the second drive module 212 according to different working conditions of the vehicle, thereby improving the safety of the vehicle.

[0056] In other embodiments, the drive unit 21 may include a first drive module 211, a second drive module 212 and a drive wheel 213. The first drive module 211 may include a first drive portion 2111 and a first drive rod 2112. The second drive module 212 may include a second drive portion 2121 and a second drive rod 2122. The first drive portion 2111 is detachably connected to the first drive rod 2112. The second drive portion 2121 is detachably connected to the second drive rod 2122. The first drive rod 2112 and the second drive rod 2122 are drive-connected to the drive wheel 213, and the drive wheel 213 may rotate the transmission rod 221, thereby driving the transmission module 222 to move along the axial direction of the transmission rod 221. Thus, after receiving the steering command of the control mechanism 04, the electric control steering mechanism for intelligent driving of the vehicle can drive the rotation mechanism 05 on the vehicle to steer. The steering assembly 03 may include a steering tooth 31 and a steering portion 32. The steering tooth 31 is drivingly connected to the meshing portion 2222, and the steering tooth 31 is drivingly connected to the steering portion 32. The steering tooth 31 is disposed in the hollow chamber of the housing assembly 01. The steering portion 32 is disposed on the outer peripheral wall of the housing assembly 01 and extends in a direction away from the transmission module 222. The steering portion 32 can be drivingly connected to the rotating mechanism 05 on the vehicle, so that when the vehicle intelligent driving electric control steering mechanism receives the steering command from the control mechanism 04, the vehicle intelligent driving electric control steering mechanism can steer the vehicle.

[0057] In this embodiment, an electronically controlled steering system for intelligent driving of a vehicle is provided. The electronically controlled steering system for intelligent driving of a vehicle can be applied to any of the above embodiments, such as Figure 7 As shown, the electronic steering system for intelligent driving of a vehicle includes a vehicle body 06 , a control mechanism 04 , and a rotating mechanism 05 .

[0058] The housing assembly can be detachably connected to the vehicle body 06. The vehicle body 06 can carry goods, people and other components to travel normally on the road.

[0059] The control mechanism 04 can be detachably connected to the vehicle body 06. The control mechanism 04 can be electrically connected to the drive unit. The rotating mechanism 05 can include a steering link 51 and a steering wheel 52. The steering link 51 can be movably connected to the vehicle body 06. The steering link 51 can be drivingly connected to the steering assembly. The steering wheel 52 can be drivingly connected to the steering link 51. The control mechanism 04 can be an intelligent driving controller, so that the optimal driving route can be analyzed, and the driving assembly 02 can be controlled to drive the steering assembly 03 according to the optimal driving route, and then the steering assembly 03 drives the steering link 51, and the steering link 51 drives the steering wheel 52, so that the vehicle body 06 can travel according to the optimal driving route.

[0060] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. An electronically controlled steering mechanism for intelligent vehicle driving, characterized in that: The electronically controlled steering mechanism comprises: A housing assembly, the housing assembly comprising a first housing, a second housing, and a third housing; the first housing, the second housing, and the third housing are fixedly connected in sequence; A drive assembly, the drive assembly comprising a drive unit and a transmission unit; the drive unit is detachably connected to the housing assembly; the transmission unit is arranged in the hollow cavity of the housing assembly; the transmission unit comprises a transmission rod, a transmission module, and a rolling body; the transmission rod is drivingly connected to the drive unit; the transmission rod and the transmission module surround an inner raceway; part of the rolling body moves in the inner raceway; the transmission rod drives the transmission module to move axially along the transmission rod through the rolling body; the drive unit is detachably connected to the first housing; the transmission unit is arranged in a space surrounded by the inner circumferential wall of the first housing, the inner circumferential wall of the second housing, and the inner circumferential wall of the third housing; the transmission module moves in the space surrounded by the inner circumferential wall of the first housing, the inner circumferential wall of the second housing, and the inner circumferential wall of the third housing along the axial direction of the transmission module under the drive of the transmission rod; A steering assembly, part of which is disposed in the space surrounded by the housing assembly; the transmission module drives the steering assembly to rotate around the central axis of the steering assembly; The transmission unit further comprises an oil tank module; the oil tank module is recessed from the outer circumferential surface of the transmission module toward the inner circumferential surface of the transmission module; the oil tank module is arranged on a side of the transmission module away from the steering assembly; when the transmission module moves to the space surrounded by the first housing, the end surface of the transmission module along the axial direction of the transmission module is surrounded by the first housing to form a first containing space, and the oil tank module is in communication with the first containing space; The electronically controlled steering mechanism includes a first state and a second state; the first state includes that the force applied to the transmission module by the steering assembly is smaller than the first force, and the transmission module is spaced apart from the inner circumferential wall of the outer shell assembly; the second state includes that the force applied to the transmission module by the steering assembly is larger than the second force, and the side of the transmission module away from the steering assembly abuts against the inner circumferential wall of the outer shell assembly away from the steering assembly; the first force is smaller than the second force.

2. The electronically controlled steering mechanism for intelligent vehicle driving according to claim 1, characterized in that: When the transmission module moves to the space surrounded by the third housing, the end surface of the transmission module along the axial direction of the transmission module and the third housing are surrounded to form a second containing space, and the oil tank module is in communication with the second containing space.

3. The electronically controlled steering mechanism for intelligent vehicle driving according to claim 2, characterized in that: The oil tank module includes a first groove; the first groove is recessed from the outer circumferential surface of the transmission module toward the inner circumferential surface of the transmission module; the first groove runs through both ends of the transmission module in the axial direction.

4. The electronically controlled steering mechanism for intelligent vehicle driving according to claim 3, characterized in that: The first groove is spaced apart from the driving module in the direction of the combined force of the steering assembly.

5. The electronically controlled steering mechanism for intelligent vehicle driving according to claim 3, characterized in that: The oil tank module further includes a second tank; the second tank is recessed from the outer circumferential surface of the transmission module toward the inner circumferential surface of the transmission module; one end of the second tank is connected to the first tank, and the other end extends away from the first tank; the second tank is spaced from both ends of the transmission module along the axial direction of the transmission module; When the transmission module moves to the space surrounded by the first shell, the first groove is communicated with the first containing space; when the transmission module moves to the space surrounded by the third shell, the first groove is communicated with the second containing space.

6. The electronically controlled steering mechanism for intelligent vehicle driving according to claim 1, characterized in that: The transmission module comprises a transmission part and a meshing part; the transmission part is fixedly connected to the meshing part; the transmission part is drivingly connected to the transmission rod; the meshing part is drivingly connected to the steering assembly; the rolling body moves in the inner raceway formed by the transmission rod and the transmission part; The first state also includes the transmission part and the inner circumferential wall of the housing component being spaced apart; the second state also includes the transmission part abutting against the inner circumferential wall of the housing component a side away from the steering component.

7. The electronically controlled steering mechanism for intelligent vehicle driving according to claim 6, characterized in that: The transmission module also includes a mounting groove, a fastening portion, and an outer raceway; the mounting groove is recessed from the outer circumference of the transmission portion toward the inner circumference of the transmission portion; the outer raceway is detachably connected to the transmission portion via the fastening portion; the inner raceway is communicated with the outer raceway; the rolling body moves in the outer raceway and the inner raceway; the outer raceway is arranged in the space surrounded by the mounting groove; the fastening portion is arranged in the space surrounded by the mounting groove.

8. The electronically controlled steering mechanism for intelligent vehicle driving according to claim 7, characterized in that: The ratio of the length of the plane where the transmission part is in the direction of the combined force of the steering assembly and away from the steering assembly and abuts against the inner wall of the housing assembly along the axial direction of the transmission part to the axial dimension of the transmission part is greater than the set abutment ratio.

9. The electronically controlled steering mechanism for intelligent vehicle driving according to claim 1, characterized in that: The driving unit comprises a first driving module and a second driving module; the first driving module is detachably connected to the housing assembly; the second driving module is detachably connected to the housing assembly; the first driving module is drivingly connected to the transmission rod; The second driving module is drivingly connected to the transmission rod; The first driving module and the second driving module are arranged at intervals.

10. An electronically controlled steering system for intelligent vehicle driving, characterized in that: The electronically controlled steering system comprises an electronically controlled steering mechanism for intelligent driving of a vehicle as claimed in any one of claims 1 to 9, and the electronically controlled steering system further comprises: a vehicle body, the housing assembly of the electric-controlled steering mechanism being detachably connected to the vehicle body; A control mechanism, wherein the control mechanism is detachably connected to the vehicle body; the control mechanism is electrically connected to the drive unit of the electric control steering mechanism; The rotating mechanism comprises a steering link and a steering wheel; the steering link is movably connected to the vehicle body; the steering link is drivingly connected to the steering assembly; and the steering wheel is drivingly connected to the steering link.

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