Steering arrangement and vehicle steering assembly

Abstract

The application relates to the technical field of vehicle engineering, in particular to a steering control device and a vehicle steering assembly, which comprises an outer rotor motor, a steering wheel and a display operation panel; the outer rotor motor comprises a rotor shell, a rotor and a center stator; the lower end of the center stator is fixed, and the display operation panel is arranged at the upper end of the center stator; the rotor shell is sleeved outside the center stator, the rotor is fixed to the inner wall of the rotor shell, the steering wheel is installed on the rotor shell, and the rotor shell, the rotor and the steering wheel form a rotating assembly which can rotate around the center stator. The application can ensure that the display operation panel keeps a fixed orientation during the rotation of the steering wheel, so that the information readability and the operation safety are improved.

Description

Technical Field

[0001] This application relates to the field of vehicle engineering technology, and more specifically, to a steering control device and a vehicle steering assembly. Background Technology

[0002] With the development of intelligent technology, modern agricultural vehicles are generally equipped with electronic control systems for monitoring engine status, operating parameters, navigation information, and fault diagnosis. Drivers need to frequently check relevant data to achieve precise operation; therefore, the integration and readability of the display control panel are particularly important.

[0003] However, existing agricultural vehicle steering systems generally employ traditional mechanical structures, with their control panels typically mounted independently on the dashboard or central control area, separate from the steering motor or actuator. This separate design results in low system integration, lengthy wiring harnesses, complex installation and maintenance, and difficulty in achieving coordinated optimization of motor control and information display. Furthermore, some improvements attempt to integrate the control panel onto the steering wheel spokes or wheel hub, which, while convenient for observation, has serious drawbacks: when the steering wheel turns, the control panel rotates accordingly, causing the screen display direction to deviate. Drivers must constantly adjust their line of sight during steering, sometimes even tilting their heads to one side to read information, affecting not only operational comfort but also posing safety hazards.

[0004] Especially during agricultural vehicle operations in the field, the frequent turning operations make the problem of the display screen rotating accordingly particularly prominent. For example, when turning at a large angle, the navigation map that was originally displayed vertically may become horizontal or even inverted, seriously affecting the efficiency of information recognition. Utility Model Content

[0005] The purpose of this application is to provide a steering control device and a vehicle steering assembly that can ensure that the display control panel maintains a fixed orientation during steering wheel rotation, thereby improving information readability and operational safety.

[0006] This application is implemented as follows: In a first aspect, this application provides a steering control device, including an external rotor motor, a steering wheel, and a display operation panel; the external rotor motor includes a rotor housing, a rotor, and a central stator; the lower end of the central stator is fixed, and the display operation panel is located at the upper end of the central stator; the rotor housing is sleeved on the outside of the central stator, the rotor is fixed to the inner wall of the rotor housing, and the steering wheel is mounted on the rotor housing; the rotor housing, the rotor, and the steering wheel constitute a rotating assembly that can rotate around the central stator.

[0007] As an optional implementation, it also includes a transmission system; the transmission system includes a first gear component, a second gear component, and a power output shaft; the first gear component is fixedly connected to the rotor housing; the second gear component meshes with the first gear component and is coaxially connected to the power output shaft; when the rotor housing rotates, it drives the steering mechanism through the transmission system.

[0008] As an alternative implementation, the first gear member includes a gear ring that circumferentially surrounds the second gear member; the inner wall of the gear ring has internal teeth that mesh with the second gear member.

[0009] As an alternative implementation, the diameter of the gear ring is larger than the diameter of the second gear component, and the gear ring and the second gear component are eccentrically arranged so that the gear ring and the second gear component are far apart from the meshing point to form a gap.

[0010] As an optional implementation, it also includes a support assembly; the support assembly includes a fixed extension rod and a bracket fixedly connected to one end of the fixed extension rod; a second gear is pivotally connected to the bracket; the other end of the fixed extension rod extends outward along the central stator axis and passes through the gap.

[0011] As an optional implementation, the external rotor motor also includes a control board installed inside the rotor housing; the center stator includes a stator shaft and an iron core disposed on the stator shaft; a mounting part is provided at the end of the stator shaft away from the iron core, the control board is sleeved on the stator shaft and axially fixed by the mounting part; the arrangement plane of the control board is perpendicular to the axial direction of the stator shaft.

[0012] As an optional implementation, the stator shaft is a tubular structure with a wire-passing notch on the side wall of the tubular structure; the connecting wires led out from the control board enter the tubular structure through the notch and extend axially close to the display operation panel for electrical connection with the display operation panel.

[0013] As an optional implementation, the bracket assembly further includes a fixing sleeve for fixed connection with the vehicle body; the power output shaft passes through the fixing sleeve and is connected to the fixing sleeve via at least one bearing; the inner wall of the fixing sleeve is provided with a first abutment portion, and the outer wall of the power output shaft is provided with a second abutment portion; the first abutment portion and the second abutment portion are respectively disposed on both sides of the bearing along the axial direction of the power output shaft, and the fixing sleeve can be used to support the downward pressure applied by the power output shaft.

[0014] As an optional implementation, the end of the fixed extension rod away from the bracket is connected to the fixed sleeve through an anti-rotation component.

[0015] As an optional implementation, the anti-rotation component includes a fixed mounting block connected to the fixed sleeve and a limiting piece disposed on the fixed mounting block; the limiting piece has a slot, and the fixed extension rod passes through the slot; the slot is used to prevent the fixed extension rod from rotating axially around the central stator.

[0016] As an optional implementation, the rotor housing includes a lower housing, an upper housing, and a sidewall housing; the upper housing, lower housing, and sidewall housing form a first chamber for accommodating the central stator and the rotor.

[0017] As an optional implementation, the lower housing has a second chamber with an opening opposite to the display and operation panel; the second chamber is used to house the transmission system.

[0018] As an optional implementation, it also includes a flat plate holder; the flat plate holder is fixedly connected to the central stator; and the display operation panel is mounted on the flat plate holder.

[0019] Secondly, this application provides a vehicle steering assembly, including a steering wheel, a steering mechanism, and the aforementioned steering control device; the steering control device is connected to the steering mechanism, and the steering mechanism is connected to the steering wheel, for driving the steering wheel to steer according to the power output of the steering control device.

[0020] The beneficial effects of this application include: The steering control device and vehicle steering assembly provided in this application integrate the display control panel onto a fixed central stator, enabling the display screen to remain stationary when the steering wheel is turned. This effectively solves the problem of traditional displays integrated on rotating components shifting and affecting information reading, significantly improving the driver's observation convenience and operational safety during frequent steering operations. At the same time, this design highly integrates motor drive and information display functions, simplifies the system structure, reduces wiring harness layout, and improves the overall vehicle integration and ease of installation and maintenance. It is especially suitable for agricultural vehicles requiring large-angle steering and precise operation, enhancing the user experience and operational efficiency of intelligent operations. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is one of the structural schematic diagrams of the steering control device according to an embodiment of this application; Figure 2 This is a second schematic diagram of the steering control device according to an embodiment of this application; Figure 3 This is the third schematic diagram of the steering control device according to an embodiment of this application; Figure 4 This is the fourth schematic diagram of the steering control device according to an embodiment of this application; Figure 5This is the fifth schematic diagram of the steering control device according to an embodiment of this application; Figure 6 This is the sixth schematic diagram of the steering control device according to an embodiment of this application; Figure 7 This is the seventh schematic diagram of the steering control device in the embodiments of this application.

[0023] Icons: 100-External rotor motor; 101-Steering wheel; 102-Display control panel; 103-Rotor housing; 104-Center stator; 105-Transmission system; 106-First gear component; 107-Second gear component; 108-Power output shaft; 109-Spacing; 110-Fixed extension rod; 111-Bracket; 112-Control panel; 113-Stator shaft; 114-Iron core; 115-Mounting part; 116-Notch; 117-Connecting harness; 118-Fixed sleeve; 119-Fixed mounting block; 120-Limiting piece; 121-Slot; 122-Lower housing; 123-Upper housing; 124-Side wall housing; 125-First chamber; 126-Second chamber; 127-Plate mounting bracket. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] With the development of intelligent technology, modern agricultural vehicles are generally equipped with electronic control systems for monitoring engine status, operating parameters, navigation information, and fault diagnosis. Drivers need to frequently check relevant data to achieve precise operation; therefore, the integration and readability of the display control panel are particularly important.

[0029] However, existing agricultural vehicle steering systems generally employ traditional mechanical structures, with their control panels typically mounted independently on the dashboard or central control area, separate from the steering motor or actuator. This separate design results in low system integration, lengthy wiring harnesses, complex installation and maintenance, and difficulty in achieving coordinated optimization of motor control and information display. Furthermore, some improvements attempt to integrate the control panel onto the steering wheel spokes or wheel hub, which, while convenient for observation, has serious drawbacks: when the steering wheel turns, the control panel rotates accordingly, causing the screen display direction to deviate. Drivers must constantly adjust their line of sight during steering, sometimes even tilting their heads to one side to read information, affecting not only operational comfort but also posing safety hazards.

[0030] Especially during agricultural vehicle operations in the field, the frequent turning operations make the problem of the display screen rotating accordingly particularly prominent. For example, when turning at a large angle, the navigation map that was originally displayed vertically may become horizontal or even inverted, seriously affecting the efficiency of information recognition.

[0031] To address the aforementioned technical problems, embodiments of this application provide a steering control device and a vehicle steering assembly.

[0032] Reference Figure 1 , Figure 2 as well as Figure 3As shown, the steering control device provided in this application includes an external rotor motor 100, a steering wheel 101, and a display operation panel 102. The external rotor motor 100 includes a rotor housing 103, a rotor, and a central stator 104. The lower end of the central stator 104 is fixed to the vehicle body, and the display operation panel 102 is located at the upper end of the central stator 104. The rotor housing 103 is sleeved on the outside of the central stator 104, the rotor is fixed to the inner wall of the rotor housing 103, and the steering wheel 101 is mounted on the rotor housing 103. The rotor housing 103, the rotor, and the steering wheel 101 constitute a rotating assembly that can rotate around the central stator 104.

[0033] It should be noted that the steering control device provided in this application embodiment integrates the display operation panel 102 with the non-rotating parts of the external rotor motor 100. The central stator 104 of the external rotor motor 100 is used as a fixed support structure, so that the display operation panel 102 is mounted on the upper end of the central stator 104, which does not rotate with the steering wheel 101. The steering wheel 101, through the rotor housing 103 and the rotor, forms a rotatable component and rotates around the central stator 104.

[0034] The working principle of this embodiment is as follows: When the driver performs a steering operation, the rotor housing 103 and the steering wheel 101 connected to it rotate synchronously, while the central stator 104 and the display operation panel 102 at its upper end remain stationary and do not rotate with the steering wheel 101, thereby ensuring that the display screen is always in a fixed orientation and avoiding the problem of information reading difficulties caused by the display screen rotating. Similarly, when the external rotor motor 100 performs steering control on behalf of the driver, the central stator 104 and the display operation panel 102 at its upper end remain stationary and do not rotate with the steering wheel 101.

[0035] Therefore, in this embodiment, the driver can clearly view key data such as engine status, navigation information, and operating parameters at any time with natural vision, which improves the ease of operation, visibility, and driving safety, while realizing a high degree of integration and collaborative optimization between motor drive and information display.

[0036] It should be noted that the steering wheel 101 in this application embodiment can be a circular steering wheel 101, or an elliptical steering wheel 101, or a non-enclosed steering wheel 101.

[0037] The steering control device provided in this application integrates the display operation panel 102 onto a fixed central stator 104, enabling the display screen to remain stationary when the steering wheel 101 rotates. This effectively solves the problem of traditional displays integrated on rotating components shifting and affecting information reading, significantly improving the driver's observation convenience and operational safety during frequent steering operations. Simultaneously, this design highly integrates motor drive and information display functions, simplifying the system structure, reducing wiring harness layout, and improving overall vehicle integration and ease of installation and maintenance. It is particularly suitable for agricultural vehicles requiring large-angle steering and precise operation, enhancing the user experience and operational efficiency of intelligent operations.

[0038] Reference Figure 3 As shown, as an optional embodiment, it also includes a transmission system 105; the transmission system 105 includes a first gear 106, a second gear 107, and a power output shaft 108; the first gear 106 is fixedly connected to the rotor housing 103; the second gear 107 meshes with the first gear 106 and is coaxially connected to the power output shaft 108; when the rotor housing 103 rotates, it drives the steering mechanism through the transmission system 105.

[0039] It should be noted that the rotational motion of the external rotor motor 100 is efficiently transmitted to the vehicle steering mechanism through a gear transmission mechanism. The working principle is as follows: when the rotor housing 103 of the external rotor motor 100 rotates under electromagnetic drive, the first gear 106 fixedly connected to it rotates accordingly, driving the second gear 107 to rotate through meshing. The second gear 107 is coaxially connected to the power output shaft 108, thereby transmitting the rotational power to the power output shaft 108 and driving the vehicle steering mechanism to achieve steering action.

[0040] This embodiment of the application organically integrates motor drive, information display and mechanical transmission, which not only realizes the mechatronic control of the steering wheel 101 and the steering actuator, but also ensures that the display screen does not rotate with the steering wheel 101 by fixing the display operation panel 102 on the central stator 104, thus taking into account both efficient power transmission and the stability of human-machine interaction.

[0041] For example, the steering control device uses an external rotor motor 100 as its power core. A 5-inch LCD display control panel 102 is mounted on the upper end of the center stator 104 to display the tractor engine speed, work navigation path, and fault alarm information in real time. The rotor housing 103 is fitted outside the center stator 104 and fixedly connected to the rotor. A steering wheel 101 is mounted on the outer periphery, forming a rotating assembly. In the transmission system 105, the first gear component 106 is fixed to the bottom of the rotor housing 103, and the second gear component 107, which meshes with the external teeth of the first gear component 106, is a small module gear and is fixed to the vertical... One end of the straight-arranged power output shaft 108 is connected to the steering rack mechanism via a universal joint. When the driver turns the steering wheel 101, the rotor housing 103 drives the first gear 106 to rotate, which in turn drives the second gear 107 and the power output shaft 108 to move through gear meshing, thereby pushing the steering mechanism to achieve front wheel steering. Meanwhile, the center stator 104 and the display screen remain stationary. No matter how much the steering wheel 101 rotates, the driver can always look straight ahead and clearly read the screen information, achieving a high degree of integration and stable display of steering control, power transmission and information interaction.

[0042] Reference Figure 3 , Figure 4 As shown, in one optional embodiment, the first gear member 106 includes a gear ring that circumferentially surrounds the second gear member 107; the inner wall of the gear ring has internal teeth that mesh with the second gear member 107.

[0043] It should be noted that the embodiments of this application adopt an internal meshing gear structure to achieve compact power transmission. Specifically, the first gear component 106 is designed as a gear ring with internal teeth, which is fixed to the inner wall of the rotor housing 103. The second gear component 107 is set as a pinion in the inner cavity of the gear ring, and its external teeth mesh with the internal teeth of the gear ring and are coaxially fixedly connected to the power output shaft 108.

[0044] The working principle of this embodiment is as follows: when the outer rotor motor 100 drives the rotor housing 103 to rotate, the gear ring fixed to its inner wall rotates synchronously, driving the internal second gear 107 to rotate in the opposite direction through internal meshing, thereby driving the power output shaft 108 to output steering power. This internal meshing structure allows the transmission components to be nested layer by layer in the radial space, significantly reducing the overall radial dimension of the transmission system 105. This is beneficial for the miniaturization and high integration of the steering control device, and is particularly suitable for scenarios in agricultural vehicles where installation space requirements are stringent. While ensuring transmission efficiency, it also improves structural compactness and layout flexibility.

[0045] Reference Figure 4 As shown, in one optional implementation, the diameter of the gear ring is larger than the diameter of the second gear 107, and the gear ring and the second gear 107 are eccentrically arranged so that the gear ring and the second gear 107 are far away from the meshing point to form a gap 109.

[0046] The system also includes a bracket assembly; the bracket assembly includes a fixed extension rod 110 and a bracket 111 fixedly connected to one end of the fixed extension rod 110; the second gear 107 is pivotally connected to the bracket 111; the other end of the fixed extension rod 110 extends outward along the central stator 104 and passes through the spacing 109, and can be fixed to the vehicle body.

[0047] It should be noted that the end of the center stator 104 furthest from the display operation panel 102 is fixedly connected to the bracket 111 to fix the center stator. The bracket 111 is provided with a connecting shaft extending axially along the center stator 104, and a bearing is installed on the connecting shaft. The second gear 107 is sleeved on the connecting shaft through the bearing.

[0048] It should be noted that, based on the internal meshing gear transmission, this embodiment adopts an eccentric arrangement structure to optimize space utilization and achieve integrated support. In this embodiment, the gear ring is designed to have a diameter larger than that of the second gear 107, and their axes are eccentrically positioned, thereby forming a larger gap 109 in the non-meshing area. Within this gap 109, a fixed extension rod 110 extends axially along the central stator 104. One end of the rod is connected to a bracket 111, which pivotally supports the second gear 107. The other end passes through the gap 109 and is fixed to the vehicle body via a connecting structure, forming a stable support structure.

[0049] It should be noted that when the rotor housing 103 drives the gear ring to rotate, due to the eccentricity between the axis of the second gear component 107 and the axis of the gear ring, the gear ring drives the second gear component 107 to rotate around its own axis through internal meshing. At the same time, the second gear component 107 is kept in a fixed spatial position by the bracket 111 and the fixed extension rod 110, and the power output shaft 108 outputs steering torque accordingly. The embodiment of this application utilizes the spatial gap generated by the eccentric layout to arrange the support structure, without the need to add an external bracket. This not only enhances the structural rigidity and operational stability of the transmission system 105, but also further improves the integration of the device, saves installation space, and is conducive to achieving efficient and stable mechatronics integration in the steering system of compact agricultural vehicles.

[0050] Reference Figure 5 , Figure 6 As shown, in an optional embodiment, the external rotor motor 100 further includes a control board 112 installed inside the rotor housing 103; the central stator 104 includes a stator shaft 113 and an iron core 114 disposed on the stator shaft 113; a mounting portion 115 is provided at the end of the stator shaft 113 away from the iron core 114, and the control board 112 is sleeved on the stator shaft 113 and axially fixed by the mounting portion 115; the arrangement plane of the control board 112 is perpendicular to the axial direction of the stator shaft 113.

[0051] It should be noted that in this embodiment, the control board 112 is integrated onto the stator shaft 113 inside the rotor housing 103, and the axial structure of the central stator 104 is used to provide power supply and control support for the rotating components. Specifically, the control board 112 is fixedly sleeved on the stator shaft 113 and located inside the rotor housing 103. It is axially positioned and fixed by the mounting portion 115 at the end of the stator shaft 113, and its arrangement plane is perpendicular to the stator shaft 113, and it is mounted in a disc shape.

[0052] It should be noted that the embodiments of this application highly integrate the control circuit inside the motor, shortening the electrical connection path, reducing external wiring harnesses, improving system reliability and anti-interference capability, and using the center stator 104 to achieve dynamic and static separation of structure and electrical components.

[0053] As an optional implementation, the stator shaft 113 is a tubular structure with a wire-passing notch 116 on the side wall of the tubular structure; the connecting wire harness 117 led out from the control board 112 enters the tubular structure through the notch 116 and extends axially close to the display operation panel 102 for electrical connection with the display operation panel 102.

[0054] It should be noted that, based on the integrated control board 112, this embodiment further optimizes the electrical connection path. This embodiment utilizes a hollow tubular stator shaft 113 as a wiring harness channel to achieve internal wiring and electrical integration. Specifically, the stator shaft 113 adopts a tubular structure with a wire-passing notch 116 on its side wall. The connecting wire harness 117 led out from the control board 112 enters the tubular structure through this notch 116 and extends axially upwards to the display operation panel 102 fixed to the upper end of the stator shaft 113, thus realizing the transmission of power and signals.

[0055] It should be noted that, since the stator shaft 113 is fixed, a stable wiring channel is formed inside it. The rotating control board 112 and the stationary display and operation panel 102 are reliably electrically connected through built-in wiring, avoiding the mess, wear, and electromagnetic interference problems caused by external flying wires. In addition, the wire notch 116 facilitates the introduction of the wiring harness into the inner cavity of the stator shaft 113, improving assembly convenience.

[0056] The embodiments of this application achieve a high degree of integration of motor control, information display and electrical wiring, which not only greatly improves the system integration and environmental adaptability, but also enhances the protection of the circuit and the neatness of the overall structure, making it particularly suitable for the working environment of agricultural vehicles with high vibration and dust.

[0057] Reference Figure 5As shown, in one optional embodiment, the bracket assembly further includes a fixing sleeve 118 for fixed connection with the vehicle body; the power output shaft 108 passes through the fixing sleeve 118 and is connected to the fixing sleeve 118 via at least one bearing; the inner wall of the fixing sleeve 118 is provided with a first abutment portion, and the outer wall of the power output shaft 108 is provided with a second abutment portion; the first abutment portion and the second abutment portion are respectively disposed on both sides of the bearing along the axial direction of the power output shaft 108, and the fixing sleeve 118 can be used to support the downward pressure applied by the power output shaft 108.

[0058] It should be noted that, in this embodiment of the application, the support rigidity and load-bearing capacity of the transmission system 105 are enhanced by setting the fixed sleeve 118 structure. The fixed sleeve 118, as a rigid support member connecting the vehicle body, is sleeved on the outside of the power output shaft 108 and achieves rotational support of the power output shaft 108 through at least one bearing; in the axial direction, the inner wall of the fixed sleeve 118 is provided with a first abutment portion, and the outer wall of the power output shaft 108 is provided with a corresponding second abutment portion, and the two are placed on both sides of the bearing along the axial direction to form a limiting support structure.

[0059] It should be noted that when the power output shaft 108 is subjected to radial force or axial downward pressure from the steering mechanism during the steering process, the force is transmitted to the first abutment through the second abutment and is directly borne by the fixed sleeve 118, avoiding the load concentration on the bearing that could lead to deformation or damage, thereby improving the stability and service life of the transmission system 105. At the same time, the fixed sleeve 118 firmly connects the bracket assembly to the vehicle body, realizing multi-point fixing of the transmission components and reasonable transmission of force flow. This not only improves the compactness and reliability of the overall structure, but also effectively enhances the impact resistance of the steering control device under heavy load and bumpy conditions, making it suitable for the steering system of agricultural vehicles operating under high torque and high intensity conditions.

[0060] Reference Figure 5 As shown, in one optional implementation, the end of the fixed extension rod 110 away from the bracket 111 is connected to the fixed sleeve 118 through an anti-rotation component.

[0061] It should be noted that, in this embodiment of the application, an anti-rotation component is provided between the fixed extension rod 110 and the fixed sleeve 118 to ensure that the fixed extension rod 110 maintains a stable spatial position during vehicle operation and prevents it from rotating with the rotor housing 103 or transmission components.

[0062] In this embodiment, one end of the fixed extension rod 110 is connected to the bracket 111, and the other end extends through the eccentric gap 109 and is connected to the fixed sleeve 118 via an anti-rotation component, so that the bracket 111 can constrain the rotation of the central stator 104 around its axis. That is to say, in this embodiment, most or all of the gravity generated by the steering wheel 101, the outer rotor motor 100, and the display operation panel 102 is borne by the fixed sleeve 118; the bracket assembly is used to prevent the rotation of the central stator 104, that is, the bracket assembly is used to balance the torque generated by the rotation of the steering wheel 101, and can also assist the fixed sleeve 118 in bearing a small part of the gravity.

[0063] The anti-rotation component can be in the form of a flat section with a mating hole, keyway structure or non-circular cross section, so that the fixed extension rod 110 and the fixed sleeve 118 are only allowed to be axially fixed and are prohibited from relative rotation.

[0064] It should be noted that when the outer rotor motor 100 drives the gear ring to rotate and drives the second gear component 107, although the rotor housing 103 and the internal rotor are rotating, the fixed extension rod 110 is connected to the fixed sleeve 118 fixed to the vehicle body through the anti-rotation component. This effectively resists the torsional torque that may be caused by gear meshing reaction force or vibration impact, maintains the spatial posture of the bracket 111 system unchanged, and ensures the precise meshing and stable support of the second gear component 107. This design enhances the structural rigidity and operational smoothness of the entire transmission and support system, avoids assembly failure or functional abnormality caused by the rotation of the support rod, and further improves the reliability and safety of the steering control device under complex working conditions.

[0065] For example, refer to Figure 3 , Figure 5 As shown, the anti-rotation component includes a fixed mounting block 119 connected to the fixed sleeve 118 and a limiting piece 120 disposed on the fixed mounting block 119; a slot 121 is provided on the limiting piece 120, and the fixed extension rod 110 passes through the slot 121; the slot 121 is used to prevent the fixed extension rod 110 from rotating axially around the central stator 104.

[0066] This embodiment of the application achieves anti-rotation positioning of the fixed extension rod 110 by setting an anti-rotation assembly consisting of a fixed mounting block 119 and a limiting piece 120. The fixed mounting block 119 is connected to the outer wall of the fixed sleeve 118, and the limiting piece 120 is installed on it. The limiting piece 120 has a groove 121 in the middle that matches the outer contour of the fixed extension rod 110, and the fixed extension rod 110 passes through the groove 121.

[0067] It should be noted that, since the fixing sleeve 118 is fixed to the vehicle body, the fixing mounting block 119 and the limiting plate 120 remain stationary. When the fixing extension rod 110 passes through the slot 121 of the limiting plate 120, the side wall of the slot 121 abuts against the outer surface of the fixing extension rod 110, restricting its rotational freedom around the axis of the central stator 104, thereby preventing the fixing extension rod 110 from twisting due to gear reaction force or vibration during steering transmission. At the same time, this structure still allows the fixing extension rod 110 to remain fixedly connected axially. This anti-rotation design is simple in structure and easy to assemble, effectively ensuring the spatial stability of the bracket assembly, ensuring that the second gear 107 is always in the correct meshing position, and improving the reliability and operating accuracy of the transmission system 105.

[0068] Reference Figure 5 , Figure 6 As shown, in one optional embodiment, the rotor housing 103 includes a lower housing 122, an upper housing 123, and a sidewall housing 124; the upper housing 123, lower housing 122, and sidewall housing 124 form a first chamber 125 for accommodating the central stator 104 and the rotor. The lower housing 122 has a second chamber 126 with an opening facing away from the display and operation panel 102; the second chamber 126 is used to accommodate the transmission system 105. The stator shaft 113 passes axially through the lower housing 122 into the second chamber 126; ball bearings are respectively provided at the connection points between the lower housing 122 and the upper housing 123 and the stator shaft 113.

[0069] It should be noted that the bracket 111 and the fixed extension rod 110 are both located in the second chamber 126. The fixed extension rod 110 can be connected to the fixed sleeve 118 through the aforementioned anti-rotation component, or the lower end of the fixed extension rod 110 can be directly connected to the vehicle body.

[0070] It should be noted that, in this embodiment, the motor drive cavity and the transmission system 105 are integrated into a separate cavity layout by optimizing the structural design of the rotor housing 103. In this embodiment, the rotor housing 103 is formed by the upper housing 123, the lower housing 122, and the side wall housing 124, which together form a first chamber 125 to accommodate the center stator 104 and the rotor, forming an independent motor working space; the lower housing 122 further extends to form a second chamber 126 with its opening facing downward and away from the display and operation panel 102, which is used to independently accommodate the transmission system 105, including a gear ring, a second gear component 107, a power output shaft 108, and a support assembly, etc.

[0071] In this embodiment, the stator shaft 113 extends downward from the first chamber 125 through the lower housing 122 and into the second chamber 126. A bearing is provided at the connection point to ensure smooth rotation of the rotor housing 103 relative to the stator shaft 113 while maintaining a tight seal. The second chamber 126 houses the transmission components and support assembly, with a portion of the fixed extension rod 110 located therein. Its lower end can be connected to the fixed sleeve 118 via an anti-rotation component or directly fixed to the vehicle body, providing stable support for the transmission system 105. This embodiment's compartmentalized design effectively isolates the motor and transmission mechanism, facilitating modular assembly and maintenance, improving structural compactness and space utilization, while ensuring a clean and aesthetically pleasing appearance for the display and operation panel 102 area. It is suitable for highly integrated agricultural vehicle steering systems operating in complex environments.

[0072] Reference Figure 7 As shown, as an optional implementation, it also includes a flat plate holder 127; the flat plate holder 127 is fixedly connected to the central stator 104; the display operation panel 102 is mounted on the flat plate holder 127.

[0073] It should be noted that, in this embodiment, a flat panel mounting bracket 127 is used to achieve stable installation and precise positioning of the display operation panel 102. In this embodiment, the flat panel mounting bracket 127 is directly connected to the fixed center stator 104, serving as the support base for the display operation panel 102. Its structural design ensures that the mounting plane matches the driver's line of sight.

[0074] The display control panel 102 is fixed to the flat plate mounting bracket 127. Since the flat plate mounting bracket 127 is rigidly connected to the central stator 104 and does not rotate with the steering wheel 101, the display screen always maintains its initial orientation regardless of how the rotor housing 103 and the steering wheel 101 rotate, avoiding information display deflection issues. Simultaneously, the mounting bracket can integrate wiring channels or interface modules, facilitating the connection of wires led out from inside the stator shaft 113 and improving electrical connection reliability. This design not only enhances the installation stability and vibration resistance of the display screen but also facilitates later maintenance and replacement, further optimizing the layout rationality of the human-machine interface and the integration of the overall structure.

[0075] This application provides a vehicle steering assembly, including a steering wheel, a steering mechanism, and the aforementioned steering control device; the steering control device is connected to the steering mechanism, and the steering mechanism is connected to the steering wheel, for driving the steering wheel to steer according to the power output of the steering control device.

[0076] The vehicle steering assembly provided in this application embodiment integrates the aforementioned steering control device, steering mechanism, and steering wheel, achieving efficient and coordinated electromechanical control. The external rotor motor 100 in the steering control device outputs power through the transmission system 105, precisely driving the steering mechanism to steer the steering wheel, resulting in rapid response and precise control. Simultaneously, the display operation panel 102 is fixed on the non-rotating central stator 104, always maintaining a positive orientation, allowing the driver to clearly read key information such as navigation and operation parameters without adjusting their line of sight during frequent large-angle steering operations, significantly improving operational convenience and driving safety. The entire steering assembly structure is highly integrated, with built-in wiring and compartment layout simplifying wiring harnesses and pipes, reducing installation space and maintenance difficulty. It is particularly suitable for high-precision, high-intensity continuous operation of intelligent agricultural vehicles in complex field environments, effectively improving operational efficiency, system reliability, and human-machine interaction experience.

[0077] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A steering handle device characterized by comprising: The device includes an external rotor motor (100), a steering wheel (101), and a display operation panel (102). The external rotor motor (100) includes a rotor housing (103), a rotor, and a central stator (104). The lower end of the central stator (104) is fixed, and the display operation panel (102) is located at the upper end of the central stator (104). The rotor housing (103) is sleeved on the outside of the central stator (104), the rotor is fixed to the inner wall of the rotor housing (103), and the steering wheel (101) is mounted on the rotor housing (103). The rotor housing (103), the rotor, and the steering wheel (101) constitute a rotating assembly that can rotate around the central stator (104).

2. The steering arrangement of claim 1, wherein, It also includes a transmission system (105); the transmission system (105) includes a first gear component (106), a second gear component (107) and a power output shaft (108); the first gear component (106) is fixedly connected to the rotor housing (103); the second gear component (107) meshes with the first gear component (106) and is coaxially connected to the power output shaft (108); when the rotor housing (103) rotates, it drives the steering mechanism through the transmission system (105).

3. The steering arrangement of claim 2, wherein, The first gear component (106) includes a gear ring that circumferentially surrounds the second gear component (107); the inner wall of the gear ring has internal teeth that mesh with the second gear component (107).

4. The steering arrangement of claim 3, wherein, The diameter of the gear ring is larger than the diameter of the second gear (107). The gear ring and the second gear (107) are eccentrically arranged so that the gear ring and the second gear (107) are far away from the meshing point and form a gap (109).

5. The steering arrangement of claim 4, wherein, It also includes a support assembly; the support assembly includes a fixed extension rod (110) and a bracket (111) fixedly connected to one end of the fixed extension rod (110); the second gear (107) is pivotally connected to the bracket (111); the other end of the fixed extension rod (110) extends outward along the central stator (104) and passes through the gap (109).

6. A steering arrangement according to any one of claims 1 to 5, wherein, The external rotor motor (100) also includes a control board (112) installed inside the rotor housing (103); the central stator (104) includes a stator shaft (113) and an iron core (114) disposed on the stator shaft (113); the stator shaft (113) is provided with a mounting part (115) at one end away from the iron core (114), the control board (112) is sleeved on the stator shaft (113) and axially fixed by the mounting part (115); the arrangement plane of the control board (112) is perpendicular to the axial direction of the stator shaft (113).

7. The steering arrangement of claim 6, wherein, The stator shaft (113) is a tubular structure with a wire-passing notch (116) on the side wall of the tubular structure; the connecting wire harness (117) led out from the control board (112) enters the tubular structure through the notch (116) and extends axially close to the display operation panel (102) for electrical connection with the display operation panel (102).

8. The steering arrangement of claim 5, wherein, The bracket assembly also includes a fixing sleeve (118) for fixed connection with the vehicle body; the power output shaft (108) passes through the fixing sleeve (118) and is connected to the fixing sleeve (118) by at least one bearing.

9. The steering arrangement of claim 8, wherein, The end of the fixed extension rod (110) away from the bracket (111) is connected to the fixed sleeve (118) through an anti-rotation component.

10. The steering arrangement of claim 9, wherein, The anti-rotation component includes a fixed mounting block (119) connected to the fixed sleeve (118) and a limiting piece (120) disposed on the fixed mounting block (119); a slot (121) is provided on the limiting piece (120), and the fixed extension rod (110) passes through the slot (121); the slot (121) is used to prevent the fixed extension rod (110) from rotating axially around the central stator (104).

11. A steering arrangement according to any of claims 2 to 5 and claims 7 to 10, wherein, The rotor housing (103) includes a lower housing (122), an upper housing (123), and a side wall housing (124); the upper housing (123), the lower housing (122), and the side wall housing (124) form a first chamber (125) for accommodating the central stator (104) and the rotor.

12. The steering arrangement of claim 11, wherein, The lower housing (122) is provided with a second chamber (126) with an opening opposite to the display operation panel (102); the second chamber (126) is used to house the transmission system (105).

13. The steering arrangement of any of claims 1-5 and 7-10, wherein, It also includes a flat plate holder (127); the flat plate holder (127) is fixedly connected to the center stator (104); the display operation panel (102) is mounted on the flat plate holder (127).

14. A vehicle steering assembly, characterized by, Includes a steering wheel, a steering mechanism, and a steering control device as described in any one of claims 1-13; The steering control device is connected to the steering mechanism, and the steering mechanism is connected to the steering wheel, for driving the steering wheel to steer according to the power output of the steering control device.

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