Automotive steer-by-wire hand force simulator and vehicle

Abstract

The application provides a kind of automobile steer-by-wire hand force simulation device and vehicle, belongs to vehicle steering device technical field, including motor housing, main module and control assembly;Motor housing is internally provided with input-output shaft assembly;Main module is sleeved on input-output shaft assembly, and is placed in motor housing;Main module includes stator assembly limited on motor housing, and two groups of rotor assemblies fixedly connected with input-output shaft assembly, rotor assembly rotates relative to stator assembly with input-output shaft assembly;Control assembly is fixed on motor housing, and is connected with the wiring end of stator assembly;Wherein, two groups of rotor assemblies are symmetrically distributed at the axial ends of stator assembly, so that the main module is flat disc type structure.The automobile steer-by-wire hand force simulation device and vehicle provided by the application can output higher torque and power than traditional motor, and has high space occupancy, which can meet the space arrangement requirements of the whole vehicle.

Description

Technical Field

[0001] This application belongs to the field of vehicle steering device technology, and more specifically, relates to a vehicle steer-by-wire hand force simulation device and vehicle. Background Technology

[0002] The steer-by-wire hand force simulation device is an important component of the automotive steering system. Its main function is to simulate the feel and feedback force of the traditional mechanical steering system, allowing the driver to experience a similar road feel and steering resistance when driving a steer-by-wire vehicle.

[0003] In the existing technology, such devices are usually composed of components such as input shaft, column, torsion bar, output shaft, and hand-feel simulation motor; however, traditional hand force simulation devices have complex structures and occupy a large volume. Due to the space layout requirements of the whole vehicle, the power density and torque density of the simulation motor cannot be effectively improved. Utility Model Content

[0004] The purpose of this application is to provide a vehicle and a hand force simulation device for steer-by-wire, which aims to solve the technical problems of existing hand force simulation devices having complex structures, being limited by the space layout requirements of the whole vehicle, and being unable to effectively improve the power density and torque density of the simulation motor.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, a device for simulating the hand force of a car's steer-by-wire system is provided, comprising: The motor housing contains an input / output shaft assembly. A main module, sleeved on the input / output shaft assembly and housed within the motor housing; the main module includes a stator assembly limited to the motor housing and two sets of rotor assemblies fixedly connected to the input / output shaft assembly, the rotor assemblies rotating relative to the stator assembly with the input / output shaft assembly; and The control component is fixed to the motor housing and connected to the terminals of the stator assembly; The two sets of rotor assemblies are symmetrically distributed at both ends of the stator assembly to form a magnetic gap surface between the axial ends of the stator assembly and the corresponding rotor assemblies. The main body module extends radially along the input / output shaft assembly into a flat structure to increase the magnetic area of ​​the magnetic gap surface along the radial direction of the input / output shaft assembly.

[0006] The solution shown in this application embodiment, compared with the prior art, reduces the overall space occupancy of the device by rationally setting the internal structure of the main module and designing the main module in a flat shape, thereby adapting to the space layout requirements of the whole vehicle. Furthermore, by correspondingly setting the two sets of rotor assemblies at both ends of the stator assembly, an axial air gap can be formed between the rotor assembly and the stator assembly. Magnetic lines of force pass through the air gap along the axial direction of the input and output shaft assemblies. Therefore, a magnetic action gap surface can be formed between the two ends of the stator assembly and the corresponding side rotor assembly. The size of the magnetic action gap surface directly affects the effective magnetic action area. In this application, since the main module is set as a flat structure, the magnetic action gap surface can be expanded radially along the input and output shaft assemblies, thereby increasing the effective magnetic action area radially along the input and output shaft assemblies to improve power density and torque density. Therefore, when the automotive steer-by-wire manual force simulation device provided in this application is applied to the steering system, it can effectively increase the magnetic action area. Furthermore, with the same volume and weight, the automotive steer-by-wire manual force simulation device provided in this application can output higher torque and power than a traditional motor, thereby effectively improving space utilization and meeting the space layout requirements of the entire vehicle.

[0007] In conjunction with the first aspect, in one possible implementation, the stator component includes: The mounting housing is encircled on the input / output shaft assembly and limited on the motor housing; Multiple sets of coil assemblies are arranged at circumferential intervals along the input / output shaft assembly and are all housed within the mounting housing; the coil assemblies are connected to the control assembly.

[0008] By connecting multiple sets of coil assemblies within the mounting housing, the multiple sets of coil assemblies can be fixed to the motor housing when the mounting housing is positioned on the motor housing, thus satisfying the relative rotation requirements between the stator assembly and the input / output shaft assembly.

[0009] In some embodiments, the mounting housing includes: An annular housing is disposed vertically within the motor housing and has a wiring terminal that extends out of the motor housing; Two sets of protective covers are installed over the two through ends of the annular shell; each of the protective covers is provided with multiple limiting holes that correspond one-to-one with the coil assembly. The annular housing and the two sets of protective covers enclose a cavity for installing multiple sets of coil assemblies, and the input / output shaft assembly passes through the cavity.

[0010] The annular housing is designed to protect the coil assembly circumferentially, and the two sets of protective covers are designed to protect the two ends of the coil assembly. Furthermore, the protective covers are provided with limiting holes to limit the movement of multiple sets of coil assemblies and prevent the coil assemblies from shaking or shifting within the annular housing.

[0011] In conjunction with the first aspect, in one possible implementation, the rotor assembly includes: The mounting base has multiple mounting holes on one side facing the stator assembly, and the multiple mounting holes are spaced apart around the input / output shaft assembly; Multiple sets of permanent magnets are disposed one-to-one in the multiple mounting holes, and the ends of the permanent magnets are close to the end face of the stator assembly.

[0012] By setting up a mounting base to install multiple sets of permanent magnets, the magnetic lines of force at both ends of the coil assembly are cut when the rotor assembly rotates with the input and output shaft assembly, thereby outputting torque.

[0013] In conjunction with the first aspect, in one possible implementation, the main body module is provided in multiple groups, and the multiple groups of the main body module are arranged sequentially at intervals along the axial direction of the input / output shaft assembly.

[0014] By further configuring multiple main modules, a greater range of torque simulation can be provided to simulate a larger torque feel.

[0015] In conjunction with the first aspect, in one possible implementation, the outer peripheral wall of the motor housing is provided with an inwardly recessed mounting groove, and the control component is fixed in the mounting groove.

[0016] The mounting slots allow for the fixation of the control components while facilitating the connection of the control components to the stator components' terminals.

[0017] In some embodiments, the control component includes: The controller assembly is located in the mounting slot and connected to the wiring terminals of the stator assembly; A protective cover is provided on the mounting groove and is fixedly connected to the outer peripheral wall of the motor housing.

[0018] The protective cover is used to protect the outside of the controller assembly to prevent external interference from affecting the stable operation of the controller assembly.

[0019] In conjunction with the first aspect, in one possible implementation, the motor housing is provided with an annular step, which divides the motor housing into a first cavity and a second cavity respectively disposed on both sides of the annular step; One end of the input / output shaft assembly passes through the second cavity from the first cavity; The main module is located in the first cavity, and the second cavity is used to connect the transmission components.

[0020] The ring-shaped stepped structure is used to separate the main module from the transmission components to avoid the transmission components affecting the main module.

[0021] For example, a limiting groove is provided on the peripheral sidewall of the first cavity, and the limiting groove passes through the motor housing radially along the input / output shaft assembly; The terminal of the stator assembly extends out of the motor housing from the limiting groove and is connected to the control assembly.

[0022] By setting a limiting groove, the terminal of the stator assembly can extend out of the limiting groove, thereby facilitating the connection and limiting of the terminal of the assembly and the stator assembly.

[0023] Secondly, embodiments of this application also provide a vehicle that includes the aforementioned vehicle steer-by-wire manual force simulation device.

[0024] The vehicle provided in this application, because it includes the aforementioned vehicle steer-by-wire manual force simulation device, has all the beneficial effects of the aforementioned vehicle steer-by-wire manual force simulation device, can output higher torque and power than a traditional motor, and has a high space occupancy rate, which can meet the space layout requirements of the whole vehicle. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the vehicle steer-by-wire manual force simulation device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the main module and input / output shaft assembly provided in the embodiments of this application; Figure 3 This is a cross-sectional structural diagram of the motor housing provided in an embodiment of this application.

[0027] In the diagram: 1. Motor housing; 11. Mounting slot; 12. Annular step; 13. First cavity; 14. Second cavity; 15. Limiting slot; 2. Stator assembly; 21. Mounting housing; 211. Annular housing; 2111. Terminal; 212. Protective cover; 2121. Limiting hole; 22. Coil assembly; 3. Rotor assembly; 31. Mounting base; 311. Mounting hole; 32. Permanent magnet; 4. Control assembly; 41. Controller assembly; 42. Protective cover; 5. Input / output shaft assembly; 51. Mounting shaft section; 52. Tube column housing; 6. Rotary bearing. Detailed Implementation

[0028] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0029] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] It should be noted that the orientation or positional relationship indicated by "inner" and "outer" in this embodiment is based on the orientation of the motor housing 1 itself. "Inner" side refers to the side inside the motor housing 1, and "outer" side refers to the side facing outward from the motor housing 1.

[0032] In addition, the axial direction of the motor housing 1 defined in the embodiments of this application refers to the axial direction of the input / output shaft assembly 5. Since the motor housing 1 is provided with a first cavity 13 for installing the input / output shaft assembly 5, and the input / output shaft assembly 5 passes through the motor housing 1, the axial direction of the motor housing 1 in this application can also be understood as the direction in which the input / output shaft assembly 5 passes through.

[0033] It should be noted that the main function of the steer-by-wire force simulation device is to constrain the steering angle travel of the steer-by-wire feel simulation device without configuring a steering intermediate shaft or external assistance, thereby achieving steering angle determinism and simulating the torque characteristics of a mechanical steering system.

[0034] In existing technology, the rotor of an analog motor is located inside the stator, and an annular air gap is formed between the rotor and the stator. This can be understood as the thickness of the annular air gap being radially oriented, with the rotor and output shaft coaxial and separated from the stator through the air gap. When alternating current is applied to the three-phase windings of the stator, a rotating magnetic field is generated. The magnetic field lines pass through the air gap radially along the motor, interacting with the rotor conductors or the magnetic field, thereby inducing a current or magnetic pull on the rotor, driving the rotor to rotate along with the rotating magnetic field.

[0035] In this traditional motor, the effective torque generation area is mainly located on the surface of the cylindrical air gap between the stator and rotor. To further increase the torque, it is usually necessary to increase the axial length of this cylindrical air gap, which would undoubtedly increase the axial length of the motor, making the overall device slender; or increase its diameter, but this would make the overall device bulky and heavy. In the spatial arrangement of a vehicle, it is difficult to meet the spatial requirements of the vehicle by simulating significant changes in the size of the motor.

[0036] Please refer to the following: Figures 1 to 3 The present application describes the vehicle steer-by-wire force simulation device and vehicle provided. The vehicle steer-by-wire force simulation device includes a motor housing 1, a main module, and a control component 4. An input / output shaft assembly 5 is installed inside the motor housing 1. The main module is sleeved on the input / output shaft assembly 5 and placed inside the motor housing 1. The main module includes a stator assembly 2 limited on the motor housing 1 and two sets of rotor assemblies 3 fixedly connected to the input / output shaft assembly 5. The rotor assemblies 3 rotate relative to the stator assembly 2 with the input / output shaft assembly 5. The control component 4 is fixed on the motor housing 1 and connected to the terminal 2111 of the stator assembly 2. The two sets of rotor assemblies 3 are symmetrically distributed at both ends of the axial direction of the stator assembly 2 to form a magnetic gap surface between the two ends of the stator assembly 2 and the corresponding side rotor assembly 3. The main module extends radially along the input / output shaft assembly 5 into a flat structure to increase the magnetic area of ​​the magnetic gap surface radially along the input / output shaft assembly 5.

[0037] It should be noted that the flat structure or flat disc structure of the main module referred to in this application refers to the flat shape of the main module due to the fact that the radial dimension of the main module is larger than the axial length. The stator assembly 2 and rotor assembly 3 of the main module are also flat disc structures, which makes the overall space occupancy smaller, the structure more compact, and conducive to the integrated design of the overall device.

[0038] It should be understood that, in the first aspect, the automotive steer-by-wire manual force simulation device provided in this application, since the rotor assembly 3 is located at both ends of the stator assembly 2, rather than the structure in the conventional technology where the rotor is located inside the stator, the effective magnetic action area in this application is changed from the cylindrical air gap in the conventional technology to the axial flat air gap in this application, that is, the magnetic action gap surface extending radially along the input / output shaft assembly 5. Therefore, the effective magnetic action area of ​​the magnetic action gap surface is equivalent to the area of ​​the entire disk. Thus, under the same volume and weight, the device in this application can output higher torque and power than a conventional motor.

[0039] It should be noted that there are certain requirements for the size of the main module in the overall vehicle space layout. Traditional technology often adopts a structure in which the rotor is built into the rotor. However, when the rotor and stator in the traditional technology are set to a flat shape, the output torque and power are relatively small and cannot meet the requirements of the manual torque range. However, in this application, when the main module is set to a flat shape, the output torque and power can be improved while meeting the space layout requirements.

[0040] The relative positions of the rotor assembly 3 and the stator assembly 2, when applied to the automotive steer-by-wire manual force simulation device, can further improve the output range of torque and power while meeting the spatial arrangement requirements of the steering system.

[0041] Furthermore, the main module has higher overall integration, a compact structure, and occupies less space. It can directly drive the load, eliminating the need for complex reduction mechanisms.

[0042] Secondly, in traditional technologies, the rotor of a motor is usually a solid cylinder or made of stacked silicon steel sheets, with its mass distribution far from the axis, resulting in a relatively large moment of inertia, poor dynamic response, and requiring greater force for acceleration and deceleration, making it less agile. However, the rotor assembly 3 in this application has a flat disc structure, which typically has a lower moment of inertia, allowing for faster acceleration and retrieval, and a faster response speed.

[0043] Thirdly, in traditional technology, the stator winding ends extend beyond both ends of the iron core and do not generate effective torque at the ends of the stator windings, but they occupy space inside the vehicle and have the problem of resistance loss. However, the stator assembly 2 in this application can effectively improve material utilization and save material costs under the same performance.

[0044] Specifically, the input / output shaft assembly 5 is provided with a mounting shaft section 51 that is adapted to the shape of the main module. The input / output shaft assembly 5 includes the aforementioned mounting shaft section 51, which is adapted to the shape of the main module, making the overall structure more stable and adaptable; and the mounting shaft section 51 is rigidly connected to the two sets of rotor assemblies 3, so that the input / output shaft assembly 5 drives the two sets of rotor assemblies 3 to rotate; specifically, in order to achieve a rigid connection between the mounting shaft section 51 and the rotor assembly 3, an interference fit can be made between the mounting shaft section 51 and the rotor assembly 3 to ensure the connection strength of the rotor assembly 3 on the mounting shaft section 51.

[0045] Furthermore, the two sets of rotor assemblies 3 are symmetrically distributed at both ends of the stator assembly 2. When the input / output shaft assembly 5 is rotated away from the main module, the end of the input / output shaft assembly 5 that is close to the main module drives the two sets of rotor assemblies 3 to rotate, so that the rotor assembly 3 rotates relative to the stator assembly 2, thereby cutting the magnetic lines of force at both ends of the stator assembly 2.

[0046] In addition, the input / output shaft assembly 5 has a column housing 52 at the end away from the main module, which is used to install the column.

[0047] Compared with the prior art, the vehicle steer-by-wire manual force simulation device provided in this application reduces the overall space occupancy rate of the device by rationally setting the internal structure of the main module and designing the main module in a flat shape, thereby adapting to the space layout requirements of the whole vehicle. Furthermore, by correspondingly arranging the two sets of rotor assemblies 3 at both ends of the stator assembly 2, an axial air gap can be formed between the rotor assembly 3 and the stator assembly 2. Magnetic lines of force pass through the air gap along the axial direction of the input / output shaft assembly 5. Therefore, a magnetic action gap surface can be formed between the two ends of the stator assembly 2 and the corresponding side rotor assembly 3. The size of the magnetic action gap surface directly affects the effective magnetic action area. In this application, since the main module is set as a flat structure, the magnetic action gap surface can be expanded radially along the input / output shaft assembly 5, thereby increasing the effective magnetic action area radially along the input / output shaft assembly 5 to improve power density and torque density. Therefore, when the automotive steer-by-wire manual force simulation device provided in this application is applied to the steering system, it can effectively increase the magnetic action area. Furthermore, with the same volume and weight, the automotive steer-by-wire manual force simulation device provided in this application can output higher torque and power than a traditional motor, thereby effectively improving space utilization and meeting the space layout requirements of the entire vehicle.

[0048] Please see Figure 1In some possible embodiments, the stator assembly 2 includes a mounting housing 21 and multiple sets of coil assemblies 22; the mounting housing 21 is circumferentially disposed on the input / output shaft assembly 5 and limited on the motor housing 1; the multiple sets of coil assemblies 22 are arranged at intervals along the circumference of the input / output shaft assembly 5 and are all disposed within the mounting housing 21; the coil assemblies 22 are connected to the control assembly 4.

[0049] By connecting multiple sets of coil assemblies 22 inside the mounting housing 21, the multiple sets of coil assemblies 22 can be fixed to the motor housing 1 when the mounting housing 21 is limited on the motor housing 1, thus satisfying the relative rotation requirements of the stator assembly 2 and the input / output shaft assembly 5.

[0050] The connection between the coil assembly 22 and the control assembly 4 ensures the effective realization of the electromagnetic conversion function of the motor and facilitates installation and wiring.

[0051] Specifically, the coil assembly 22 includes a stator core and a winding group wound on the stator core. The specific structure and working principle of the stator core and the winding group are existing technologies and will not be described in detail here.

[0052] Optionally, the outer wall of the stator core is provided with a groove around its perimeter, and the winding assembly is wound on the groove.

[0053] Specifically, there is a one-to-one correspondence between the stator core and the winding assembly, and the number of stator cores and the number of winding coils can be selectively set according to actual needs.

[0054] Please see Figure 1 In some embodiments, the mounting housing 21 includes an annular housing 211 and two sets of protective covers 212; the annular housing 211 is disposed vertically inside the motor housing 1 and has a wiring terminal 2111 that extends out of the motor housing 1; the two sets of protective covers 212 cover the two through ends of the annular housing 211; each protective cover 212 is provided with multiple limiting holes 2121 corresponding to the coil assembly 22; wherein, the annular housing 211 and the two sets of protective covers 212 enclose a receiving cavity for mounting multiple sets of coil assemblies 22, and the input / output shaft assembly 5 passes through the receiving cavity.

[0055] It should be noted that the materials of the protective cover 212 and the annular shell 211 do not affect the magnetic field of the coil assembly 22, but are only used for mechanical protection and limiting of the coil assembly 22; and their materials can be selectively set according to actual needs.

[0056] In addition, the limiting hole 2121 on the protective cover 212 passes through the protective cover 212 on the side facing the coil assembly 22, and one end of the coil assembly 22 extends into the corresponding limiting hole 2121, while the other end passes through the annular shell 211 and extends into the limiting hole 2121 of another set of protective covers 212; and it should be noted that the end of the limiting hole 2121 away from the coil assembly 22 is a non-through end, so as to realize the axial limiting of the coil assembly 22.

[0057] The annular housing 211 is provided to protect the coil assembly 22 circumferentially, and the two sets of protective covers 212 are provided to protect the two ends of the coil assembly 22. Furthermore, the protective cover 212 is provided with a limiting hole 2121 to limit the multiple sets of coil assemblies 22 and prevent the coil assembly 22 from shaking or shifting within the annular housing 211.

[0058] Specifically, the terminal 2111 is a port structure that protrudes outward from the outer peripheral wall of the annular housing 211, and the port structure is limited on the motor housing 1 to achieve circumferential limitation of the stator assembly 2; optionally, the port structure is rigidly connected to the control component 4, and the stator assembly 2 is also electrically connected to the control component 4 through the port structure.

[0059] The port structure has a through hole communicating with the interior of the annular housing 211, so that the connecting wire of the coil assembly 22 can extend from the terminal 2111, thereby facilitating the electrical connection of the coil assembly 22. Furthermore, the number of through holes and the axial length of the through holes in this port structure can be selectively set according to actual needs.

[0060] It should be understood that, since the main module is a flat disc structure, the mounting housing 21 is actually a flat disc structure.

[0061] Optionally, to ensure relative rotation between the stator assembly 2 and the input / output shaft assembly 5, a rotary bearing 6 may be provided between the stator assembly 2 and the input / output shaft assembly 5.

[0062] Please see Figure 1 In some possible embodiments, the rotor assembly 3 includes a mounting base 31 and multiple sets of permanent magnets 32; the mounting base 31 is provided with multiple mounting holes 311 on the side facing the stator assembly 2, and the multiple mounting holes 311 are spaced around the input / output shaft assembly 5; the multiple sets of permanent magnets 32 are correspondingly disposed in the multiple mounting holes 311, and the ends of the permanent magnets 32 are close to the end face of the stator assembly 2.

[0063] By setting the mounting base 31 to install multiple sets of permanent magnets 32, the magnetic lines of force at both ends of the coil assembly 22 are cut when the rotor assembly 3 rotates with the input / output shaft assembly 5, thereby outputting torque.

[0064] Optionally, the multiple permanent magnets 32 may have the same specifications; specifically, the number of permanent magnets 32 in each rotor assembly 3 is 12-15; specifically, the number of permanent magnets 32 may also be selectively set according to actual needs. Similarly, the mounting holes 311 correspond one-to-one with the permanent magnets 32, therefore, the number of mounting holes 311 is equal to the number of permanent magnets 32.

[0065] It should be noted that the permanent magnet 32 ​​needs to be close to the end face of the stator assembly 2, and the end face of the permanent magnet 32 ​​should not abut against the end face of the stator assembly 2, so as to avoid frictional resistance between the rotor assembly 3 and the stator assembly 2 when the rotor assembly 3 rotates, which would affect the rotation of the rotor assembly 3.

[0066] Optionally, the end face of the mounting base 31 is close to the end face of the stator assembly 2 but there is no pressure between them, and one end of each permanent magnet 32 ​​extends into the mounting hole 311, while the other end is flush with the end face of the mounting base 31.

[0067] The permanent magnet 32 ​​in this application can effectively cut magnetic field lines when the rotor assembly 3 rotates, thereby generating hand force; and the mounting base 31 facilitates the installation and positioning of the permanent magnet 32.

[0068] In some possible embodiments, multiple sets of main modules are provided, and the multiple sets of main modules are arranged sequentially at intervals along the axial direction of the input / output shaft assembly 5.

[0069] By further configuring multiple main modules, a greater range of torque simulation can be provided to simulate a larger torque feel.

[0070] Specifically, multiple main modules are arranged sequentially and spaced apart along the axial direction of the input / output shaft assembly 5 to achieve axial superposition of the main modules, forming multiple sets of rotor assemblies 3 and stator assemblies 2 in parallel. This can increase the motor output torque according to different hand force requirements, provide a wider range of hand force, meet different hand force requirements, and has strong expandability.

[0071] Optionally, to increase torque output, the length of the mounting shaft section 51 can be extended as needed, increasing the number of rotor assembly 3 and stator assembly 2 to provide greater tactile torque.

[0072] It should be noted that the increase in power and torque in this application is a relative increase. Specifically, the increase brought about by a set of main modules in this application refers to the increase in power and torque achieved by the structural design of the main modules in this application compared with the structural design of the main modules in the prior art, based on the same mass and volume.

[0073] In this embodiment, the increase in torque and power brought about by setting multiple main modules refers to the increase in torque and power that can be achieved by setting multiple main modules on the basis of the original single main module.

[0074] Optionally, the control component 4 is fixed inside the motor housing 1; specifically, a cavity for installing the control component 4 is provided inside the motor housing 1, and the control component 4 is connected to the cavity by a snap-fit ​​bolt; furthermore, heat dissipation holes are provided at the cavity where the control component 4 is located to improve the heat dissipation efficiency inside the cavity.

[0075] Please see Figure 1 In some possible embodiments, the outer peripheral wall of the motor housing 1 is provided with an inwardly recessed mounting groove 11, and the control component 4 is fixed in the mounting groove 11.

[0076] The mounting slot 11 is provided to fix the control component 4 and facilitate the connection of the control component 4 to the wiring terminal 2111 of the stator component 2.

[0077] It should be understood that the installation slot 11 ensures the installation stability of the control component 4 without affecting the overall structure and appearance of the motor housing 1, and facilitates the connection and wiring between the control component 4 and the motor housing 1.

[0078] Specifically, the shape of the mounting groove 11 is adapted to the shape of the control component 4 to avoid unstable movement of the control component 4 within the mounting groove 11. Optionally, the mounting groove 11 extends through one end of the motor housing 1 along the axial direction of the input / output shaft assembly 5 to facilitate the insertion of the control component 4 from the through end of the mounting groove 11.

[0079] Please see Figure 1 In some embodiments, the control component 4 includes a controller assembly 41 and a protective cover 42; the controller assembly 41 is disposed in the mounting groove 11 and connected to the wiring terminal 2111 of the stator assembly 2; the protective cover 42 is disposed on the mounting groove 11 and is fixedly connected to the outer peripheral wall of the motor housing 1.

[0080] The protective cover 42 is used to protect the outside of the controller assembly 41 to prevent the controller assembly 41 from being affected by external interference, which would affect the stable operation of the controller assembly 41.

[0081] It should be understood that the protective cover 42 is installed on the mounting groove 11 and is fixedly connected to the outer peripheral wall of the motor housing 1. This design protects the controller assembly 41 and ensures its effective connection with the stator assembly 2 and the sealing of the overall structure.

[0082] Specifically, the protective cover 42 is fixedly connected to the motor housing 1; optionally, the protective cover 42 and the motor housing 1 are fixedly connected by fixing bolts to prevent the protective cover 42 from loosening; optionally, the protective cover 42 is bonded and fixed to the motor housing 1 to fix the protective cover 42; optionally, the protective cover 42 and the mounting groove 11 form an interference fit to fasten the protective cover 42 in the mounting groove 11 of the motor housing 1.

[0083] Please see Figure 3 In some possible embodiments, the motor housing 1 is provided with an annular step 12, which divides the motor housing 1 into a first cavity 13 and a second cavity 14 located on both sides of the annular step 12; one end of the input / output shaft assembly 5 passes through the first cavity 13 into the second cavity 14; the main body module is located in the first cavity 13, and the second cavity 14 is used to connect the transmission assembly.

[0084] The annular step 12 structure is used to separate the main module from the transmission components to avoid the transmission components affecting the main module.

[0085] By planning the internal structure of the motor housing 1 and setting the aforementioned annular steps 12, the internal installation space is rationally divided, facilitating the installation and layout of various components, and making the overall structure clearer and more orderly.

[0086] It should be understood that the annular step 12 is also provided with through holes suitable for the input / output shaft assembly 5 to pass through. The first cavity 13 and the second cavity 14 are formed on both sides of the annular step 12, respectively. The first cavity 13 is used to install the main module and provide external protection for the main module. The second cavity 14 is used to accommodate the corresponding structure of the transmission assembly. The transmission assembly can be used to realize the speed change of the input / output shaft assembly 5. The specific structure and working principle of the transmission assembly are existing technologies and will not be described in detail here.

[0087] Additionally, it should be noted that there is no resistance between the rotor assembly 3 located between the annular step 12 and the stator assembly 2 and the annular step 12, so as to ensure that the input / output shaft assembly 5 can drive the rotor assembly 3 to rotate smoothly and avoid friction between the rotor assembly 3 and the annular step 12, which would affect the rotation.

[0088] Please see Figure 3 For example, a limiting groove 15 is provided on the peripheral sidewall of the first cavity 13, and the limiting groove 15 passes through the motor housing 1 radially along the input / output shaft assembly 5; the terminal 2111 of the stator assembly 2 passes through the limiting groove 15 out of the motor housing 1 and is connected to the control assembly 4.

[0089] By setting the limiting groove 15, the terminal 2111 of the stator assembly 2 can extend out of the limiting groove 15, thereby facilitating the connection and limiting of the control assembly 4 and the terminal 2111 of the stator assembly 2.

[0090] It should be understood that the limiting groove 15 passes through the motor housing 1 radially along the input / output shaft assembly 5 so that the first cavity 13 inside the motor housing 1 is connected to the external mounting groove 11, thereby facilitating the extension of the stator assembly 2 terminal 2111 out of the motor housing 1 and realizing the circumferential limiting of the stator assembly 2.

[0091] Specifically, the port structure located at the stator assembly 2 terminal 2111 can pass through the limiting groove 15 and extend into the mounting groove 11 to be fixed with the controller assembly 41 within the mounting groove 11. Furthermore, it should be noted that the port structure of the terminal 2111 and the controller assembly 41 include both a rigid fixed connection and an electrical connection; optionally, the port structure of the terminal 2111 and the controller assembly 41 are rigidly connected via an interference fit, while the connecting wire located within the port structure extends outwards and is electrically connected to the lead end on the controller assembly 41.

[0092] It should be understood that the limiting groove 15 is designed to facilitate the passage of the wiring terminal 2111 of the stator assembly 2. The design of the limiting groove 15 facilitates the wiring of the stator assembly 2 while ensuring the stability and safety of the wiring.

[0093] For ease of description, the rotor assembly 3 furthest from the annular step 12 is defined as the first rotor assembly 3, and the rotor assembly 3 closest to the annular step 12 is defined as the second rotor assembly 3. During installation, the first rotor assembly 3 is first rigidly connected to the mounting shaft section 51 of the input / output shaft assembly 5. Then, the input / output shaft assembly 5 passes through the stator assembly 2. Finally, the second rotor assembly 3 is rigidly connected to the mounting shaft section 51 of the input / output shaft assembly 5, completing the assembly of the main module and the input / output shaft assembly 5. Afterward, the assembled main module and input / output shaft assembly 5 are installed into the first cavity 13 of the motor housing 1, and the controller assembly 41 is rigidly connected to the terminal 2111 of the stator assembly 2. Finally, the protective cover 42 is rigidly connected to the motor housing 1.

[0094] Specifically, the rigid connection in this application can be understood as a fixed connection, and there is no relative rotation or movement between the two components that achieve the rigid connection. Optionally, the above-mentioned rigid connection can be achieved by bolt connection, adhesive fixation, or interference fit, etc. Specifically, the method of rigid connection can be selectively set according to actual needs.

[0095] The working process of this device is as follows: the steering wheel hand force is transmitted to the input / output shaft assembly 5, the input / output shaft assembly 5 transmits the motion to the mounting shaft section 51, the mounting shaft section 51 drives the rotor assembly 3 to rotate, the rotor assembly 3 cuts the magnetic field lines in the stator assembly 2 to generate hand force, and the motor control assembly 4 can output the corresponding torque value according to the hand force value.

[0096] Furthermore, the range of manual force adjustment can be determined based on the number of permanent magnets 32 in rotor assembly 3 and the number of winding coils on the stator core in stator assembly 2. When a single main module cannot meet the manual force input requirements, multiple main modules can be installed by increasing the axial length of the mounting shaft section 51 and correspondingly expanding the mounting space inside the motor housing 1, thereby increasing the motor output torque.

[0097] Based on the same inventive concept, this application also provides a vehicle that includes the above-mentioned vehicle steer-by-wire manual force simulation device.

[0098] The vehicle provided in this application, because it includes the aforementioned vehicle steer-by-wire manual force simulation device, has all the beneficial effects of the aforementioned vehicle steer-by-wire manual force simulation device, can output higher torque and power than a traditional motor, and has a high space occupancy rate, which can meet the space layout requirements of the whole vehicle.

[0099] Specifically, the steer-by-wire hand force simulation device provided in this application can increase the range of simulated torque and power within a limited installation space, making the range of simulated feel and feedback force of traditional mechanical steering systems larger. This allows drivers to experience road feel and steering resistance similar to mechanical steering over a wider range when driving steer-by-wire vehicles, improving the driving experience and enhancing the vehicle's competitiveness.

[0100] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle steer-by-wire manual force simulation device, characterized in that, include: The motor housing (1) has an input / output shaft assembly (5) installed inside; The main module is sleeved on the input / output shaft assembly (5) and placed inside the motor housing (1); the main module includes a stator assembly (2) limited on the motor housing (1) and two sets of rotor assemblies (3) fixedly connected to the input / output shaft assembly (5), the rotor assemblies (3) rotating with the input / output shaft assembly (5) relative to the stator assembly (2); as well as The control component (4) is fixed on the motor housing (1) and connected to the terminal (2111) of the stator assembly (2); Two sets of rotor assemblies (3) are symmetrically distributed at both ends of the stator assembly (2) to form a magnetic gap surface between the axial ends of the stator assembly (2) and the corresponding rotor assembly (3). The main body module extends radially along the input / output shaft assembly (5) in a flat structure to increase the magnetic area of ​​the magnetic gap surface along the radial direction of the input / output shaft assembly (5).

2. The vehicle steer-by-wire manual force simulation device as described in claim 1, characterized in that, The stator assembly (2) includes: The mounting housing (21) is arranged around the input / output shaft assembly (5) and limited on the motor housing (1); Multiple coil assemblies (22) are arranged at intervals along the circumference of the input / output shaft assembly (5) and are all located inside the mounting housing (21); the coil assemblies (22) are connected to the control assembly (4).

3. The steer-by-wire manual force simulation device for automobiles as described in claim 2, characterized in that, The mounting housing (21) includes: An annular housing (211) is disposed vertically inside the motor housing (1) and has a wiring terminal (2111) that extends out of the motor housing (1); Two sets of protective covers (212) are provided on the two through ends of the annular shell (211); each of the protective covers (212) is provided with a plurality of limiting holes (2121) corresponding one-to-one with the coil assembly (22); The annular housing (211) and the two sets of protective covers (212) enclose a cavity for installing multiple sets of coil assemblies (22), and the input / output shaft assembly (5) passes through the cavity.

4. The vehicle steer-by-wire manual force simulation device as described in claim 1, characterized in that, The rotor assembly (3) includes: The mounting base (31) has a plurality of mounting holes (311) on one side facing the stator assembly (2), and the plurality of mounting holes (311) are spaced apart around the input / output shaft assembly (5); Multiple sets of permanent magnets (32) are disposed in the multiple mounting holes (311) in a one-to-one correspondence, and the ends of the permanent magnets (32) are close to the end face of the stator assembly (2).

5. The vehicle steer-by-wire manual force simulation device as described in claim 1, characterized in that, The main body module is provided in multiple groups, and the multiple groups of main body modules are arranged sequentially at intervals along the axial direction of the input / output shaft assembly (5).

6. The steer-by-wire manual force simulation device for automobiles as described in claim 1, characterized in that, The outer peripheral wall of the motor housing (1) is provided with an inwardly recessed mounting groove (11), and the control component (4) is fixed in the mounting groove (11).

7. The vehicle steer-by-wire manual force simulation device as described in claim 6, characterized in that, The control component (4) includes: The controller assembly (41) is located in the mounting slot (11) and connected to the terminal (2111) of the stator assembly (2); A protective cover (42) is provided on the mounting groove (11) and is fixedly connected to the outer peripheral wall of the motor housing (1).

8. The steer-by-wire manual force simulation device for automobiles as described in claim 1, characterized in that, The motor housing (1) is provided with an annular step (12), which divides the motor housing (1) into a first cavity (13) and a second cavity (14) respectively located on both sides of the annular step (12); One end of the input / output shaft assembly (5) extends from the first cavity (13) into the second cavity (14); The main module is located in the first cavity (13), and the second cavity (14) is used to connect the transmission components.

9. The steer-by-wire manual force simulation device for automobiles as described in claim 8, characterized in that, The first cavity (13) has a limiting groove (15) on its peripheral sidewall, and the limiting groove (15) passes through the motor housing (1) radially along the input / output shaft assembly (5); The terminal (2111) of the stator assembly (2) extends out of the motor housing (1) through the limiting groove (15) and is connected to the control assembly (4).

10. A vehicle, characterized in that, Including the vehicle steer-by-wire manual force simulation device as described in any one of claims 1-9.

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