Steering column, steering system and vehicle

Abstract

The present disclosure relates to a kind of steering column, steering system and vehicle, the steering column includes motor, steering column and detection component, the motor includes rotating shaft;The steering column is drivingly connected with the rotating shaft;The detection component includes first detection piece and second detection piece, wherein the second detection piece is used to obtain the rotating angle of the rotating shaft, and the first detection piece and second detection piece are commonly used to detect the rotating angle of the steering column.By the above technical scheme, the steering column structure provided by the present disclosure is relatively simple.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle technology, and more specifically, to a steering column, a steering system, and a vehicle. Background Technology

[0002] In related technologies, a combination of master and slave sensors is typically used in the steering column to measure the absolute rotation angle of the steering column, which makes the structure of the steering column relatively complex. Utility Model Content

[0003] The purpose of this disclosure is to provide a steering column, a steering system, and a vehicle, wherein the steering column has a relatively simple structure.

[0004] To achieve the above objectives, this disclosure provides a steering column including a motor, a steering column, and a detection assembly. The motor includes a rotating shaft; the steering column is drively connected to the rotating shaft; the detection assembly includes a first detection element and a second detection element, wherein the second detection element is used to detect the rotation angle of the rotating shaft, and the first detection element and the second detection element are used together to obtain the rotation angle of the steering column.

[0005] Optionally, the first detection element includes a first signal element and a first sensing element, the first signal element rotating synchronously with the steering column, and the first sensing element being arranged to receive the signal emitted by the first signal element; the second detection element includes a second signal element and a second sensing element, the second signal element rotating synchronously with the rotation shaft, and the second sensing element being arranged to receive the signal emitted by the second signal element.

[0006] Optionally, the steering column is arranged at an angle to the rotation shaft, the first signal element is arranged on the steering column, and / or the second signal element is arranged on the rotation shaft.

[0007] Optionally, the steering column has a first end in the axial direction that is tractively connected to the rotating shaft, and the first signal element is arranged at the first end; and / or, the rotating shaft has a second end in the axial direction that is tractively connected to the steering column, and the second signal element is arranged at the second end.

[0008] Optionally, the steering column is coaxially provided with a first transmission component, and the rotating shaft is provided with a second transmission component that is connected to the first transmission component in a transmission manner.

[0009] Optionally, the first transmission component is constructed as a worm gear; the second transmission component is constructed as a worm, the worm being coaxially fixed with the rotating shaft, or a portion of the rotating shaft is constructed as the worm.

[0010] Optionally, the first signal element is embedded in the end face of the worm gear, and the second signal element is sleeved on the worm.

[0011] Optionally, the steering column includes a control circuit board, and the first and second sensors are disposed on the control circuit board.

[0012] Optionally, the axial projection of the steering column at least partially coincides with the axial projection of the control circuit board.

[0013] Optionally, the steering column includes a housing, in which the steering column, the rotating shaft, and the control circuit board are all arranged, with the control circuit board located near the intersection of the steering column and the rotating shaft.

[0014] Optionally, the first sensing element and the first signal element are arranged opposite each other in the axial direction of the steering column, and / or the second sensing element and the second signal element are arranged opposite each other in the axial direction of the steering column.

[0015] Based on the above technical solution, this disclosure also provides a steering system, including the steering column described above.

[0016] Optionally, the first sensing element is constructed as a first angle encoding chip, the first signal element is constructed as a first magnetic element, and / or the second sensing element is constructed as a second angle encoding chip, and the second signal element is constructed as a second magnetic element.

[0017] Based on the above technical solutions, this disclosure also provides a vehicle, including the above-described steering column or the above-described steering system.

[0018] Through the above technical solution, in the steering column provided in this disclosure, the second detection element is used to detect the rotation angle of the rotating shaft. The second detection element can also cooperate with the first detection element to obtain the rotation angle of the steering column. In this way, by associating the rotation angle of the rotating shaft with the rotation angle of the steering column, the second detection element can not only detect the rotation angle of the rotating shaft, but also cooperate with the first detection element to detect the absolute rotation angle of the steering column. This eliminates the need for a master-slave sensor combination, simplifies the structure of the steering column and reduces manufacturing costs while ensuring the accuracy of steering angle detection.

[0019] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1This is a three-dimensional structural schematic diagram of the steering column assembly provided in an exemplary embodiment of this disclosure; Figure 2 This is a three-dimensional structural schematic diagram of the steering column assembly provided in an exemplary embodiment of the present disclosure, wherein the steering column and the rotor shaft are shown; Figure 3 This is a perspective structural diagram of the steering column assembly provided in an exemplary embodiment of the present disclosure, showing the steering column, rotor shaft, and control circuit board; Figure 4 This is an exploded view of the steering column assembly provided in an exemplary embodiment of this disclosure; Figure 5 This is a schematic diagram of the steering column assembly provided in an exemplary embodiment of this disclosure; Figure 6 yes Figure 5 A cross-sectional view along the AA direction; Figure 7 yes Figure 5 A cross-sectional view along the BB direction.

[0021] Explanation of reference numerals in the attached figures 1-Motor; 11-Rotating shaft; 111-Second end; 12-Stator winding; 2-Steering column; 21-First end; 31-First detection element; 311-First sensing element; 312-First signal element; 32-Second detection element; 321-Second sensing element; 322-Second signal element; 4-Control circuit board; 51-First transmission element; 52-Second transmission element; 6-Housing. Detailed Implementation

[0022] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0023] In this disclosure, unless otherwise stated, the terms "first," "second," etc., are used to distinguish one element from another and do not have sequential or material significance. Furthermore, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0024] In related technologies, users rotate the steering wheel to drive the steering column. The steering column is typically connected to a motor shaft with a specific transmission ratio to rotate the shaft. An angle sensor is installed at the motor end to detect the rotation angle of the shaft. This angle is used to control the motor's drive. Combined with parameters such as vehicle speed and road conditions, the motor generates a torque opposite to the direction of the shaft. This torque is transmitted to the steering wheel through the shaft and steering column to provide the user with a realistic driving feel. Simultaneously, an independent angle sensor is installed at the steering column to detect its absolute rotation angle. This absolute rotation angle is transmitted to the drive control device at the wheels via the vehicle's drive-by-wire system to steer the wheels and thus the vehicle. In the above implementation, the steering column detects its own turning angle through an independently set angle sensor. The independent angle sensor contains at least two magnets and two angle encoding chips. In addition, there is an angle encoding chip required at the motor end. The entire system has at least three angle encoding chips, as well as two corresponding circuit boards, wiring harnesses, gears and other structural components, which makes the steering column assembly complex, costly and takes up a lot of space in the vehicle.

[0025] To address the aforementioned technical problems, in accordance with the exemplary embodiments provided in this disclosure, reference is made to... Figures 1 to 7 As shown, a steering column is provided, comprising: Motor 1, which includes a rotating shaft 11; Steering column 2, steering column 2 is drive-connected to rotating shaft 11; and The detection component includes a first detection element 31 and a second detection element 32, wherein the second detection element 32 is used to detect the rotation angle of the rotating shaft 11, and the first detection element 31 and the second detection element 32 are used together to obtain the rotation angle of the steering column 2.

[0026] Through the above technical solution, in the steering column provided in this disclosure, the second detection element 32 is used to detect the rotation angle of the rotating shaft 11. The second detection element 32 can also work with the first detection element 31 to obtain the rotation angle of the steering column 2. In this way, by associating the detection of the rotation angle of the rotating shaft 11 with the detection of the rotation angle of the steering column 2, the second detection element 32 can not only detect the rotation angle of the rotating shaft 11, but also cooperate with the first detection element 31 to detect the absolute rotation angle of the steering column 2. This eliminates the need for an independent angle detection device, simplifies the structure of the steering column and reduces manufacturing costs while ensuring the accuracy of steering angle detection.

[0027] It should be added that, as an exemplary embodiment, in the steering column, the steering column 2 is drive-connected to the rotating shaft 11 of the motor 1, and the two typically have a fixed transmission ratio. Thus, when the rotation angle of the steering column 2 is within the range of 0° to 360° in different revolutions, the corresponding rotation angle of the rotating shaft 11 is different. For example, when the rotation angle of the steering column 2 is 0°, the corresponding rotation angle of the rotating shaft 11 can be 0°; when the rotation angle of the steering column 2 is 360°, the corresponding rotation angle of the rotating shaft 11 can be 35°. 9°. When the rotation angle of the steering column 2 is 720°, the corresponding rotation angle of the rotating shaft 11 can be 718°, or 356°. Therefore, by detecting the rotation angle of the steering column 2 and the rotation angle of the rotating shaft 11 respectively, the revolution of the steering column 2 can be quickly determined when the steering column is energized, and thus the absolute rotation angle of the steering column 2 can be determined. This eliminates the need for a separate angle sensor. The absolute rotation angle of the steering column 2 can be obtained by detecting the rotation angle of the rotating shaft 11 and the steering column 2 by the first detection element 31 and the second detection element 32 respectively.

[0028] It is worth noting that in the field of vehicle technology, the rotating shaft 11 of the motor 1 and the steering column 2 typically have a fixed transmission ratio. Their core function is to achieve speed reduction transmission between the rotating shaft 11 and the steering column 2, facilitating the control of the motor 1 to provide steering wheel feedback and wheel control. Based on this, this disclosure detects the rotation angles of the rotating shaft 11 and the steering column 2 separately, and combines this with the transmission ratio between them to detect the absolute rotation angle of the steering column 2. This transmission ratio can be any suitable value within the range of 3 to 30. After the controller is powered off or after the steering column 2 is rotated due to a power outage, and power is restored, the angle of the steering column 2 can be quickly detected, thereby determining the angle of the steering wheel.

[0029] In the steering column provided in this disclosure, as an exemplary embodiment, reference is made to... Figure 2 and Figure 3As shown, the first detection element 31 may include a first signal element 312 and a first sensing element 311. The first signal element 312 can rotate synchronously with the steering column 2, and the first sensing element 311 is arranged to receive the signal emitted by the first signal element 312. The second detection element 32 may include a second signal element 322 and a second sensing element 321. The second signal element 322 can rotate synchronously with the rotation shaft 11, and the second sensing element 321 is arranged to receive the signal emitted by the second signal element 322. The first signal element 312 and the second signal element 322 rotate synchronously with the steering column 2 and the rotation shaft 11, respectively. Thus, by receiving the signals emitted by the first signal element 312 and the second signal element 322, the first sensing element 311 and the second sensing element 321 detect the rotation angle of the first signal element 312 and the second signal element 322, thereby enabling the detection of the rotation angle of the rotation shaft 11 and the steering column 2.

[0030] The first sensing element 311 and the second sensing element 321 can be configured as angle encoding chips, and the first signal element 312 and the second signal element 322 can be configured as magnetic elements that cooperate with the angle encoding chips. The magnetic elements rotate synchronously with the steering column 2 or the rotating shaft 11 to cause a change in the magnetic field. The angle encoding chip can detect the rotation angle of the magnetic elements by detecting the change in the magnetic field, thereby realizing the detection of the rotation angle of the steering column 2 and the rotating shaft 11.

[0031] In other embodiments, the first detection element 31 and the second detection element 32 can be constructed in any suitable form. For example, the first sensing element 311 and the second sensing element 321 can be constructed as capacitive sensors, and the first signal element 312 and the second signal element 322 can be constructed as capacitor plates that cooperate with the capacitive sensors, so as to detect the rotation angle of the steering column 2 and the rotating shaft 11 according to the change of electric field. This disclosure does not impose specific limitations on this.

[0032] Based on the above embodiments, as an exemplary embodiment, refer to Figure 2 and Figure 3 As shown, the rotation shaft 11 and the steering column 2 can be arranged at an angle. The first signal element 312 can be arranged on the steering column 2, and / or the second signal element 322 can be arranged on the rotation shaft 11. This allows for synchronous rotation of the first signal element 312 and the steering column 2, as well as synchronous rotation of the second signal element 322 and the rotation shaft 11. Furthermore, the angle between the rotation shaft 11 and the steering column 2 can be 45° to 90° to adapt to different vehicle interior spaces, and this disclosure does not impose specific limitations in this regard. As an exemplary embodiment, the angle between the rotation shaft 11 and the steering column 2 can be 90° to achieve an orthogonal spatial arrangement, fully utilizing the interior space and facilitating a compact design.

[0033] The first signal element 312 and the second signal element 322 can be arranged in any suitable position to achieve synchronous rotation with the steering column 2 and the rotating shaft 11. In this case, the first signal element 312 and / or the second signal element 322 can be connected to the steering column 2 and the rotating shaft 11 respectively through the connecting member, and can also achieve synchronous rotation with the steering column 2 and the rotating shaft 11. This disclosure does not impose any specific restrictions on this.

[0034] Based on the above embodiments, the steering column 2 may have a first end 21 that is axially connected to the rotating shaft 11, and a first signal element 312 may be arranged at the first end 21; and / or, the rotating shaft 11 may have a second end 111 that is axially connected to the steering column 2, and a second signal element 322 may be arranged at the second end 111. In other words, the first signal element 312 and the second signal element 322 can be arranged close to each other, which facilitates the setting of the first sensing element 311 and the second sensing element 321, and further facilitates the signal transmission between the first signal element 312 and the first sensing element 311, and between the second signal element 322 and the second sensing element 321. For example, in this disclosure, the first signal element 312 and the second signal element 322 are respectively arranged at the first end 21 and the second end 111 of the steering column 2 and the rotating shaft 11 close to each other. Therefore, the first sensing element 311 and the second sensing element 321 are mounted on the circuit board, and the circuit board can be set at a position close to the first signal element 312 and the second signal element 322, thereby facilitating the reception of the signals emitted by the first signal element 312 and the second signal element 322 by the first sensing element 311 and the second sensing element 322, and realizing accurate detection of the rotation angle of the steering column 2 and the rotating shaft 11.

[0035] In the steering column provided in this disclosure, as an exemplary embodiment, reference is made to... Figure 2 and Figure 3 As shown, the steering column 2 may be coaxially equipped with a first transmission member 51, and the rotating shaft 11 may be connected to the first transmission member 51 via a second transmission member 52. In other words, the steering column 2 is equipped with the first transmission member 51, and the rotating shaft 11 is equipped with the second transmission member 52. The transmission connection between the steering column 2 and the rotating shaft 11 can be achieved through the cooperation of the first transmission member 51 and the second transmission member 52. The first transmission member 51 may be integrally formed with the steering column 2, or it may be separately formed from the steering column 2 and then connected together. Similarly, the second transmission member 52 may also be integrally formed with the steering column 2 or separately formed; this disclosure does not impose specific limitations in this regard.

[0036] The first transmission member 51 and the second transmission member 52 can also be constructed in any suitable form, and this disclosure does not impose specific limitations on them. As an exemplary embodiment, refer to... Figure 2 or Figure 4As shown, the first transmission component 51 can be constructed as a worm gear; the second transmission component 52 can be constructed as a worm. The worm can be coaxially fixed with the rotating shaft 11, or a portion of the rotating shaft 11 can be constructed as a worm. In this way, the worm gear and the worm mesh with each other. By respectively setting the worm gear and the worm on the steering column 2 and the rotating shaft 11, the transmission connection between the steering column 2 and the rotating shaft 11 can be achieved. Furthermore, the worm gear can be separately disposed from the steering column 2 and connected to the first end 21 of the steering column 2, and the worm can be separately disposed from the rotating shaft 11 and connected to the second end 111 of the rotating shaft 11. Alternatively, the portion of the rotating shaft 11 near the second end 111 can be provided with teeth that mesh with the worm gear to form a worm. All of these methods can achieve the purpose of the transmission connection between the steering column 2 and the rotating shaft 11 via the worm gear and worm wheel. This disclosure does not impose specific limitations on these methods. Among them, the worm gear transmission structure has the characteristics of large transmission ratio, compact structure and smooth operation. It can convert the high-speed rotation of the rotating shaft 11 of motor 1 into the low-speed rotation of steering column 2, which is suitable for the operating speed requirements of steering wheel.

[0037] In other embodiments, the first transmission member 51 and the second transmission member 52 may also be constructed as a pair of meshing helical gears, with the two helical gears being coaxially fixed to the steering column 2 and the rotating shaft 11 respectively, which can also achieve the transmission connection between the steering column 2 and the rotating shaft 11. This disclosure does not impose any specific limitations on this.

[0038] Based on the above embodiments, as an exemplary embodiment, refer to Figure 2 As shown, the first signal element 312 can be embedded in the end face of the worm gear, and the second signal element 322 can be sleeved on the worm. The first signal element 312 can be positioned at the center of the worm gear to uniformly induce magnetic field changes as the worm gear rotates, facilitating accurate detection by the first sensing element 311. In the case of an integral forming of the worm and the rotating shaft 11, the end of the worm can have a mounting portion for the second signal element 322 to be sleeved on, thus enabling the second signal element 322 to be mounted on the worm. Alternatively, in the case of a separate forming of the worm and the rotating shaft 11, one end of the worm can be connected to the rotating shaft 11, and the second signal element 322 is sleeved on the other end of the worm and fixed to it, thus enabling the second signal element 322 to be mounted on the worm. This disclosure does not impose specific limitations on this arrangement.

[0039] In the steering column provided in this disclosure, as an exemplary embodiment, reference is made to... Figure 2 and Figure 3As shown, the steering column may include a control circuit board 4, and a first sensor 311 and a second sensor 321 may be disposed on the control circuit board 4. In this way, after receiving signals from the first signal element 312 and the second signal element 322, the first sensor 311 and the second sensor 321 can convert the signals into electrical signals through the control circuit board 4 and transmit them to the vehicle's drive-by-wire system to control the steering of the vehicle's wheels. Furthermore, the first sensor 311 and the second sensor 321 are disposed on the control circuit board 4 to facilitate the corresponding arrangement of the first sensor 311, the second sensor 321 and the first signal element 312 and the second signal element 322. In this disclosure, the steering column 2 and the rotating shaft 11 are arranged at an angle, and the first signal element 312 and the second signal element 322 are respectively disposed at the first end 21 and the second end 111 opposite to the steering column 2 and the rotating shaft 11. By disposing of the control circuit board 4 at the intersection of the steering column 2 and the rotating shaft 11, the first sensor 311 and the second sensor 321 can be arranged close to the first signal element 312 and the second signal element 322, thereby facilitating the first sensor 311 and the second sensor 321 to receive signals from the first signal element 312 and the second signal element 322, and realizing accurate detection of the rotation angle of the steering column 2 and the rotating shaft 11.

[0040] Based on the above embodiments, as an exemplary embodiment, refer to Figure 3 and Figure 4 As shown, the axial projection of the steering column 2 can at least partially coincide with the axial projection of the control circuit board 4. That is, the plane on which the control circuit board 4 is arranged can be angled to the rotation axis of the steering column 2. For example, the control circuit board 4 can be perpendicular to the axial direction of the steering shaft. In this way, the position of the control circuit board 4 utilizes the end face space of the steering column 2, so that the control circuit board 4 can be as compact as possible while occupying less space, and can directly use the first sensor 311 arranged on it to detect the turning angle of the steering column 2, and ensure the detection distance between the first sensor 311 and the second sensor 321 and the first signal element 312 and the second signal element 322, so as to achieve accurate detection.

[0041] Based on the above embodiments, as an exemplary embodiment, refer to Figure 4As shown, the first sensor 311 and the first signal element 312 can be arranged opposite each other in the axial direction of the steering column 2, and / or, the second sensor 321 and the second signal element 322 can be arranged opposite each other in the axial direction of the steering column 2. That is, the first sensor 311 and the second sensor 321 can be arranged on the side of the control circuit board 4 facing the first signal element 312 and the second signal element 322, so as to reduce the distance between the first sensor 311 and the second sensor 321 and the first signal element 312 and the second signal element 322. At the same time, it avoids the control circuit board 4 being separated from the first sensor 311 and the first signal element 312 and the second sensor 321 and the second signal element 322, which would affect the signal transmission between them and ensure the accuracy of angle detection.

[0042] In the steering column provided in this disclosure, as an exemplary embodiment, reference is made to... Figure 5 , Figure 6 and Figure 7 As shown, the steering column may include a housing 6, in which the motor 1 and steering column 2 can be mounted, and the steering column 2 is rotatably supported on the housing 6. The housing 6 can be an integral structure. The stator of the motor 1 can be fixedly mounted inside the housing 6, while the rotating shaft 11 is rotatably mounted inside the housing 6. The steering column 2 is rotatably supported on the housing 6 via bearings. This allows for the installation of both the rotating shaft 11 and the steering column 2 within the housing 6 without affecting their rotation. The housing 6 provides mechanical protection and a positioning reference for each component.

[0043] The motor 1 may include a stator winding 12, which may be arranged inside the housing 6. The rotating shaft 11 can rotate relative to the stator winding 12. The stator winding 12 is electrically connected to the control circuit board 4 through a wiring harness. The control circuit board 4 controls the motor 1 to work according to the absolute angle of the steering column 2 detected by the first sensor 311 and the second sensor 321, so as to provide tactile feedback to the driver.

[0044] Based on the above embodiments, as an exemplary embodiment, refer to Figure 5 and Figure 7As shown, the steering column assembly may include a control circuit board 4. The housing 6 may have a first mounting cavity, a second mounting cavity, and a third mounting cavity. The second mounting cavity may communicate with the first and third mounting cavities. The steering column 2 may be arranged in the first mounting cavity, the rotating shaft 11 may be arranged in the third mounting cavity, and the control circuit board 4 may be arranged in the second mounting cavity. The wiring harness of the stator winding 12 may be connected to the control circuit board 4 via the second and fourth mounting cavities. This allows the control circuit board 4 to be arranged close to the intersection of the steering column 2 and the rotating shaft 11, thereby saving axial space of the steering column 2. In this disclosure, the steering column 2 is driven to the rotating shaft 11 via a worm gear. The control circuit board 4 may be arranged parallel to the end face of the worm gear to utilize the space of the worm gear end face, further improving space compactness. In addition, the multiple mounting cavities enable the steering column 2, control circuit board 4, and motor 1 to be physically isolated, allowing them to work independently without interfering with each other, thus improving system stability. At the same time, the wiring harness can pass through the connection between the fourth mounting cavity and the first mounting cavity to electrically connect the stator winding 12 and the circuit board, which also facilitates wiring harness routing and improves the regularity of the wiring path.

[0045] In one exemplary embodiment, the housing 6 may further include a fourth mounting cavity, in which the stator winding 12 may be arranged. The wire harness of the stator winding 12 may be connected to the control circuit board 4 via the first mounting cavity and the second mounting cavity, thereby realizing the electrical connection between the stator winding 12 and the control circuit board 4.

[0046] Based on the above technical solutions, this disclosure also provides a steering system, including the aforementioned steering column. The steering column possesses all the technical features of the aforementioned steering column, and therefore will not be elaborated upon here. The steering system may include a vehicle master controller, and a control circuit board may be electrically connected to the vehicle master controller to transmit the detected rotation angle of the steering column to the vehicle master controller, thereby controlling the steering of the wheels.

[0047] Based on the above technical solutions, this disclosure also provides a vehicle, including the aforementioned steering column or steering system. The steering column possesses all the technical features of the aforementioned steering column, and the steering system possesses all the technical features of the aforementioned steering system; therefore, they will not be described in detail here. By incorporating the aforementioned steering column or steering system, the vehicle can reduce the overall size and weight of the steering system while ensuring precise steering control and driving feel, thus meeting the development needs for lightweight and highly integrated vehicles.

[0048] When the steering column provided in this disclosure is applied to the field of vehicle technology, the user turns the steering wheel to drive the steering column assembly to rotate. If the number of rotations of the steering wheel is limited to less than 1 rotation, the rotation angle of the steering column 2 detected by the first sensor 311 of the control circuit board 4 is the rotation angle of the steering wheel. This angle value can be used to control the following angle of the wheel. The rotation angle of the rotating shaft 11 detected by the second sensor 321 is used to control the normal rotation of the motor 1 so that the motor 1 can provide damping, self-centering and road feel. If the steering wheel needs to turn more than one revolution, for example, three revolutions, since the first sensor 311 can only recognize any angle value within 0° to 360°, when the angle exceeds 360°, its angle signal will be recalculated from 0°. At this time, the first sensor 311 cannot identify whether the steering wheel is at the first, second, or third revolution. In this case, by collecting the rotation angle of the rotating shaft 11 detected by the second sensor 321 and the rotation angle of the steering column 2 detected by the first sensor 311, the number of revolutions of the steering column 2 can be calculated using a vernier algorithm, thus obtaining the total angle of rotation of the steering column 2, i.e., the steering wheel. The motor 1 can be a permanent magnet synchronous motor, an asynchronous motor, or a permanent magnet brushed motor, etc., and this disclosure does not impose specific limitations on this.

[0049] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0050] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0051] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A steering column, characterized in that, include: An electric motor, the electric motor including a rotating shaft; Steering column, which is drively connected to the rotating shaft; as well as The detection component includes a first detection element and a second detection element, wherein the second detection element is used to detect the rotation angle of the rotating shaft, and the first detection element and the second detection element are used together to obtain the rotation angle of the steering column.

2. The steering column according to claim 1, characterized in that, The first detection element includes a first signal element and a first sensing element. The first signal element rotates synchronously with the steering column, and the first sensing element is arranged to receive the signal emitted by the first signal element. The second detection element includes a second signal element and a second sensing element. The second signal element rotates synchronously with the rotating shaft, and the second sensing element is arranged to receive the signal emitted by the second signal element.

3. The steering column according to claim 2, characterized in that, The steering column is arranged at an angle to the rotation shaft, the first signal element is arranged on the steering column, and / or the second signal element is arranged on the rotation shaft.

4. The steering column according to claim 3, characterized in that, The steering column has a first end in the axial direction that is drively connected to the rotating shaft, and the first signal element is arranged at the first end; and / or The rotating shaft has a second end in the axial direction that is drively connected to the steering column, and the second signal element is arranged at the second end.

5. The steering column according to claim 2, characterized in that, The steering column is coaxially provided with a first transmission component, and the rotating shaft is provided with a second transmission component that is connected to the first transmission component.

6. The steering column according to claim 5, characterized in that, The first transmission component is constructed as a worm gear; The second transmission component is constructed as a worm gear, which is coaxially fixed with the rotating shaft, or a portion of the rotating shaft is constructed as the worm gear.

7. The steering column according to claim 6, characterized in that, The first signal element is embedded in the end face of the worm gear, and the second signal element is sleeved on the worm.

8. The steering column according to any one of claims 2-7, characterized in that, The steering column includes a control circuit board, and the first sensor and the second sensor are disposed on the control circuit board.

9. The steering column according to claim 8, characterized in that, The axial projection of the steering column at least partially coincides with the axial projection of the control circuit board.

10. The steering column according to claim 8, characterized in that, The steering column includes a housing, in which the steering column, the rotating shaft, and the control circuit board are all arranged. The control circuit board is arranged near the intersection of the steering column and the rotating shaft.

11. The steering column according to any one of claims 2-7, characterized in that, The first sensing element and the first signaling element are arranged opposite each other in the axial direction of the steering column, and / or, The second sensing element and the second signal element are arranged opposite each other in the axial direction of the steering column.

12. The steering column according to any one of claims 2-7, characterized in that, The first sensing element is constructed as a first angle encoding chip, the first signal element is constructed as a first magnetic element, and / or The second sensing element is constructed as a second angle encoding chip, and the second signal element is constructed as a second magnetic element.

13. A steering system, characterized in that, Includes the steering column according to any one of claims 1-12.

14. A vehicle, characterized in that, Includes the steering column according to any one of claims 1-12 or the steering system according to claim 13.

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