Steering control system and vehicle
By employing an outer column, rotating shaft, and rotating limit block design in the steering control system, and utilizing the combination of internal and external threads, the problems of easy failure of the limit structure and high noise are solved, thus achieving stability and quietness of the steering control system.
Patent Information
- Application Number
- CN202423013373.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-06
AI Technical Summary
The existing steering control system suffers from the problem that the limit structure is prone to failure and generates significant noise.
The design employs an outer tube column, a rotating shaft, and a rotating limit block. Through the engagement of internal and external threads, the rotating limit block moves axially along the rotating shaft, slowing down its movement speed, preventing rapid impacts on the limiting components, and reducing noise and contact stress.
It effectively reduces noise and contact stress between the rotation limit block and the limit component, ensuring the safe and stable operation of the steering control system and improving the driving experience.
Smart Images
Figure CN223533531U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle technology, and more particularly to a steering control system and a vehicle. Background Technology
[0002] Steer-by-wire systems eliminate the mechanical connection between the steering wheel and the steering gear, relying entirely on electrical signals for steering information transmission and control. However, without the restraints of the steering gear, the steering wheel can rotate without limit, compromising vehicle safety. Therefore, to ensure the proper functioning of the steering system, a restraint structure is needed to limit the steering wheel's rotation angle.
[0003] The existing steering control system includes a column and a steering wheel. The end of the column is equipped with multiple rotating rings. After one rotating ring rotates with the steering wheel, it impacts the next rotating ring. The next rotating ring continues to rotate with the steering wheel until the last rotating ring collides with the fixed ring and stops rotating, thereby limiting the rotation angle of the steering wheel.
[0004] However, when the steering wheel angle is limited in the above way, the collision between two adjacent rotating rings will generate large contact stress, which can easily lead to the failure of the limiting structure, and the collision between the rotating rings will generate a lot of noise. Utility Model Content
[0005] In view of the above problems, this utility model provides a steering control system and vehicle to solve the problem that the limiting structure of the steering control system in the prior art is prone to failure and generates a lot of noise.
[0006] On one hand, this application provides a steering control system for a vehicle, comprising:
[0007] External tubular column;
[0008] A rotating shaft is located inside the outer column. The rotating shaft is configured to connect with the vehicle's steering wheel. The peripheral wall of the rotating shaft is provided with external threads. Limiting members are provided on both sides of the external threads along the axial direction of the rotating shaft.
[0009] A rotation limit block is movably disposed between the rotating shaft and the outer tube column along the axial direction of the rotating shaft. The rotation limit block has an internal thread that mates with the external thread. The rotation limit block is configured to move along the axial direction of the rotating shaft when the rotating shaft rotates and to engage with the limiting member for limiting.
[0010] In one possible implementation, the steering control system provided in this application has a rotation limit block that engages with the outer tube column guide.
[0011] In one possible implementation, the steering control system provided in this application has a guide groove on the outer tube column, which extends axially along the rotation axis.
[0012] The radial portion of the rotating limit block along the rotation axis is embedded in the guide groove, and the rotating limit block moves along the guide groove.
[0013] In one possible implementation, the steering control system provided in this application further includes:
[0014] The pressure plate is located in the guide groove and on the side of the rotating limit block opposite to the rotating shaft. The pressure plate is connected to the outer tube column and is in radial contact with the rotating limit block along the rotating shaft.
[0015] In one possible implementation, the steering control system provided in this application has a positioning groove on the side surface of the rotation limit block facing the pressure plate.
[0016] The pressure plate has a positioning protrusion on one side of the rotating limit block, and the positioning protrusion is embedded in the positioning groove.
[0017] In one possible implementation, the steering control system provided in this application further includes: a cover plate assembly, which is fixedly connected to the outer tube column and presses against the pressure plate.
[0018] In one possible implementation, the steering control system provided in this application further includes:
[0019] The cover plate body is located on the side of the pressure plate opposite to the rotation limit block and is spaced apart from the pressure plate. The cover plate body is fixedly connected to the outer tube column and covers the guide groove. At least one of the cover plate body and the pressure plate is provided with an installation groove.
[0020] The elastic element corresponds to the mounting groove. The elastic element is located in the corresponding mounting groove, and the cover plate body applies a pre-force to the pressure plate through the elastic element.
[0021] In one possible implementation, the steering control system provided in this application has both external and internal threads that are double-threaded.
[0022] In one possible implementation, the steering control system provided in this application includes a rotation limit block comprising:
[0023] The limiting frame and the wrapping component are provided. The wrapping component covers the outside of the limiting frame. The limiting frame has two limiting heads that extend out of the wrapping component. The limiting heads correspond to and are matched with the limiting component.
[0024] On the other hand, this application provides a vehicle including any of the aforementioned steering control systems.
[0025] The steering control system and vehicle provided in this application include an outer column, a rotating shaft, and a rotation limit block. The rotating shaft is located inside the outer column and is used to connect to the steering wheel. An external thread is provided on the circumferential wall of the rotating shaft, and an internal thread is provided on the rotation limit block. The internal and external threads cooperate to allow the rotation limit block to reciprocate along the axial direction of the rotating shaft when it rotates. A limit element is provided on each side of the external thread along the axial direction of the rotating shaft, and the rotation limit block engages with the limit element. Rotating the steering wheel causes the rotating shaft to rotate, thereby moving the rotation limit block along the rotating shaft until it contacts one of the limit elements to form a limit engagement, thus preventing further rotation of the steering wheel and limiting the steering wheel rotation angle. In this way, the rotation of the steering wheel is converted into the translation of the rotation limit block along the rotation axis through the cooperation of the internal and external threads. This slows down the movement speed of the rotation limit block, avoids the rotation limit block from hitting the limit component quickly, helps to reduce the noise generated by the limiting cooperation between the rotation limit block and the limit component, and at the same time reduces the contact stress generated between the two, reduces the possibility of damage to the limit component, and ensures the safe and stable operation of the steering control system. Attached Figure Description
[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0027] Figure 1 This is a schematic diagram of the steering control system provided in an embodiment of this application;
[0028] Figure 2 for Figure 1 A cross-sectional view of part of the structure of the steering control system along line AA;
[0029] Figure 3 for Figure 1 BB-direction sectional view of the steering control system;
[0030] Figure 4 A schematic diagram of the structure of the rotating shaft, rotating limit block, pressure plate and cover plate assembly of the steering control system provided in the embodiment of this application;
[0031] Figure 5 for Figure 4 CC-direction sectional view;
[0032] Figure 6 A schematic diagram of the rotating shaft, rotating limit block and pressure plate of the steering control system provided in the embodiment of this application;
[0033] Figure 7 This is a schematic diagram of the rotation limit block of the steering control system provided in an embodiment of this application;
[0034] Figure 8 This is a schematic diagram of the structure of the pressure plate of the steering control system provided in the embodiments of this application;
[0035] Figure 9 This is a schematic diagram of the structure of the rotating shaft of the steering control system provided in an embodiment of this application.
[0036] Explanation of reference numerals in the attached figures:
[0037] 100-Steering control system;
[0038] 110 - Outer tubular column; 111 - Guide groove; 112 - Limiting structure;
[0039] 120 - Rotating shaft; 121 - Lead screw shaft; 1211 - External thread; 1212 - Limiting element; 1212a - Elastic buffer ring; 1213 - Pin hole; 122 - Drive shaft;
[0040] 130 - Rotation limit block; 131 - Internal thread; 132 - Positioning groove; 133 - Limiting skeleton; 1331 - Limiting head; 134 - Wrapping component;
[0041] 140 - Pressure plate; 141 - Positioning protrusion;
[0042] 150 - Cover plate assembly; 151 - Cover plate body; 1511 - Mounting groove; 152 - Elastic element.
[0043] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0044] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0045] As shown in the background section, existing steering control systems include a column and a steering wheel. The end of the column is equipped with multiple rotating rings. After one rotating ring rotates with the steering wheel, it impacts the next rotating ring. The next rotating ring continues to rotate with the steering wheel until the last rotating ring collides with the fixed ring and stops rotating, thereby limiting the steering wheel rotation angle.
[0046] However, when the steering wheel angle is restricted in the above way, the collision between two adjacent rotating rings will generate a large contact stress, which can easily lead to deformation of the rotating rings or even failure of the limiting structure. In addition, the collision between the rotating rings will generate a lot of noise, affecting the driving experience of the vehicle.
[0047] In view of this, the present invention provides a steering control system and a vehicle. The steering control system includes an outer column, a rotating shaft, and a rotating limit block. The rotating shaft is disposed on the inner side of the outer column and is used to connect to the steering wheel. An external thread is provided on the peripheral wall of the rotating shaft, and an internal thread is provided on the rotating limit block. The internal and external threads cooperate to allow the rotating limit block to reciprocate along the axial direction of the rotating shaft when it rotates. A limit element is provided on each side of the external thread along the axial direction of the rotating shaft, and the rotating limit block engages with the limit element. Rotating the steering wheel drives the rotating shaft to rotate, thereby causing the rotating limit block to move along the rotating shaft until it contacts one of the limit elements to form a limiting engagement, thus preventing further rotation of the steering wheel and limiting the steering wheel rotation angle. In this way, the rotation of the steering wheel is converted into the translation of the rotation limit block along the rotation axis through the cooperation of the internal and external threads. This slows down the movement speed of the rotation limit block, avoids the rotation limit block from hitting the limit component quickly, helps to reduce the noise generated by the limiting cooperation between the rotation limit block and the limit component, and at the same time reduces the contact stress generated between the two, reduces the possibility of damage to the limit component, and ensures the safe and stable operation of the steering control system.
[0048] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings:
[0049] It should be noted that the steering control system provided in this application embodiment can be applied to various different vehicles.
[0050] See Figure 1 , Figure 2 , Figure 4 and Figure 7As shown, the steering control system 100 of this application embodiment is used in a vehicle and includes: an outer column 110, a rotating shaft 120, and a rotation limiting block 130; wherein, the rotating shaft 120 is disposed inside the outer column 110, the rotating shaft 120 is configured to connect to the vehicle's steering wheel, the peripheral wall surface of the rotating shaft 120 is provided with an external thread 1211, and the rotating shaft 120 is provided with limiting members 1212 located on both sides of the external thread 1211 along the axial direction of the rotating shaft 120; the rotation limiting block 130 is movably disposed between the rotating shaft 120 and the outer column 110 along the axial direction of the rotating shaft 120, the rotation limiting block 130 has an internal thread 131 that mates with the external thread 1211, and the rotation limiting block 130 is configured to move along the axial direction of the rotating shaft 120 when the rotating shaft 120 rotates, and to limit and engage with the limiting member 1212.
[0051] In this embodiment, the rotating shaft 120 is disposed inside the outer column 110 and is used to connect with the vehicle's steering wheel. A rotation limiting block 130 is disposed on the rotating shaft 120, and the side of the rotating limiting block 130 that contacts the rotating shaft 120 is provided with an internal thread 131. The internal thread 131 and the external thread 1211 cooperate with each other so that the rotating limiting block 130 can reciprocate along the axial direction of the rotating shaft 120 when the rotating shaft 120 rotates with the steering wheel.
[0052] Furthermore, a limiting member 1212 is provided on each side of the external thread 1211 along the axial direction of the rotating shaft 120, and the rotating limiting block 130 is engaged with the limiting member 1212. Rotating the steering wheel can drive the rotating shaft 120 to rotate, thereby causing the rotating limiting member to move along the rotating shaft 120 until the rotating limiting block 130 contacts one of the limiting members 1212 to form a limiting engagement, thus preventing further rotation of the steering wheel. Similarly, rotating the steering wheel in the opposite direction until the rotating limiting block 130 contacts the other limiting member 1212 to form a limiting engagement can prevent the rotation of the steering wheel from the other rotation direction, thereby achieving the limitation of the steering wheel rotation angle.
[0053] The range of rotation angle of the steering wheel can be adjusted by adjusting the distance between the two limiting members 1212, the number of turns of the external thread 1211 and the internal thread 131, and the thread pitch. This application embodiment does not limit this. In specific implementation, the rotation angle range of the steering wheel can be set from 0° to 1080°, that is, the steering wheel can rotate three full turns.
[0054] Furthermore, the specific structure of the rotating shaft 120 and the connection method between the rotating shaft 120 and the steering wheel are not limited in this embodiment. For example, the rotating shaft 120 includes two parts: a drive shaft 122 and a lead screw shaft 121. One end of the drive shaft 122 is splinedly connected to the steering wheel, and the other end of the drive shaft 122 is splinedly connected to the lead screw shaft 121. The external thread 1211 and the limiting member 1212 are both provided on the peripheral wall surface of the lead screw shaft 121. In this way, when the steering wheel is rotated, the steering wheel drives the lead screw shaft 121 to rotate through the drive shaft 122. Moreover, the spline connection method can make the drive shaft 122 and the lead screw shaft 121 more evenly stressed, increase the contact area at the connection, increase the load that the rotating shaft 120 can withstand, thereby improving the structural strength of the rotating shaft 120 and avoiding deformation or damage.
[0055] Furthermore, the rotation limiting block 130 can be configured to have an arc surface that partially mates with the rotation shaft 120, with an internal thread 131 provided on the arc surface so that the arc surface contacts the rotation shaft 120. Alternatively, it can be configured to have a connecting hole, with an internal thread 131 provided on the inner wall of the connecting hole. The rotation limiting block 130 is sleeved on the rotation shaft 120 through the connecting hole, thereby forming a transmission connection. The specific structure of the rotation limiting block 130 is not limited in this embodiment of the application, as long as it can convert the rotation of the rotation shaft 120 into the translation of the rotation limiting block 130.
[0056] In a specific implementation, the steering control system 100 may further include a steering angle sensor and a steering control unit. The steering angle sensor is connected to the lead screw shaft 121 to convert the mechanical rotation of the steering wheel into an electrical signal, which is then used by the steering control unit to control the vehicle's steering. The steering control unit can also achieve torque increase and deceleration effects. The limiting action of the shaft limit block and the rotating shaft 120 ensures that the steering wheel's rotation angle remains within the range of the steering angle sensor, thus guaranteeing the normal operation of the steering control system 100.
[0057] Therefore, the steering control system 100 provided in this application embodiment converts the rotation of the steering wheel into the translational movement of the rotation limit block 130 along the rotation shaft 120 through the engagement of the internal thread 131 and the external thread 1211. This slows down the movement speed of the rotation limit block 130, preventing it from directly and rapidly impacting the limiting member 1212. This helps reduce the noise generated by the limiting engagement between the rotation limit block 130 and the limiting member 1212, and also helps reduce the contact stress between them, lowering the possibility of damage to the limiting member 1212. This ensures the safe and stable operation of the steering control system 100. Furthermore, the rotation limit block 130 only contacts the limiting member 1212 when the steering wheel is rotated to two critical values within the angle range. During the remaining stages, the rotation limit block 130 moves smoothly on the rotation shaft 120, without impact noise or other forces, ensuring smooth steering wheel rotation.
[0058] In addition, an elastic buffer ring 1212a or other buffer structure can be fitted on the limiting member 1212. When the rotating limiting block 130 forms a limiting engagement with the limiting member 1212, it first contacts the elastic buffer ring 1212a, which can further reduce the noise generated by the contact between the limiting block and the limiting member 1212, reduce the contact stress generated between the rotating limiting block 130 and the limiting member 1212, and help ensure the structural stability of the steering control system 100 and improve the driving experience of the vehicle.
[0059] See also some of the possible implementation methods. Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment of the application, the rotation limiting block 130 is guided and engaged with the outer tube column 110.
[0060] In practice, to prevent the rotation limit block 130 from rotating with the rotation shaft 120, the rotation limit block 130 can be guided and engaged with the outer column 110. This ensures that the rotation limit block 130 only moves along the axial direction of the rotation shaft 120, which helps to ensure the steering control system 100's limiting effect on the steering wheel.
[0061] See also some of the possible implementation methods. Figure 1 , Figure 2 and Figure 3 As shown, the outer tube column 110 of this application embodiment is provided with a guide groove 111, which extends axially along the rotation shaft 120; a portion of the rotation limiting block 130 is embedded in the guide groove 111 along the radial direction of the rotation shaft 120, and the rotation limiting block 130 moves along the guide groove 111.
[0062] In some embodiments, the outer tube column 110 and the rotation limiting block 130 are matched by a guide groove 111. The guide groove 111 extends along the axial direction of the rotation shaft 120, and the rotation limiting block 130 is at least partially located in the guide groove 111 and slidably connected to the guide groove 111. On the one hand, it can limit the movement path of the rotation limiting block 130 and play a guiding role. On the other hand, the contact between the groove wall of the guide groove 111 and the rotation limiting block 130 can also prevent the rotation limiting block 130 from rotating with the rotation shaft 120, which is conducive to ensuring the realization of the steering wheel rotation angle limiting effect and improving the limiting accuracy.
[0063] See also some of the possible implementation methods. Figures 1 to 6 As shown, the embodiment of this application also includes: a pressure plate 140, which is disposed in the guide groove 111 and located on the side of the rotation limiting block 130 facing away from the rotation shaft 120. The pressure plate 140 is connected to the outer tube column 110 and is in radial abutment with the rotation limiting block 130 along the rotation shaft 120.
[0064] Understandably, in order to ensure that the internal thread 131 and the external thread 1211 are always engaged and to ensure the smooth movement of the rotation limit block 130, a pressure plate 140 that radially abuts against the rotation limit block 130 can be provided to press the rotation limit block 130 onto the rotation shaft 120. The rotation limit block 130 and the pressure plate 140 are slidably connected, so that the rotation limit block 130 can move axially along the rotation shaft 120 without being squeezed by the pressure plate 140.
[0065] The pressure plate 140 can be fixedly connected to the outer tube column 110, limiting the rotation limit block 130 between the pressure plate 140 and the rotation shaft 120. Alternatively, the pressure plate 140 can be configured to slide radially with the outer tube column 110 along the rotation shaft 120 and limit its engagement with the outer tube column 110 axially. Two limiting structures 112 can be provided on the outer tube column 110, with the pressure plate 140 positioned between the two limiting structures 112, and both ends of the pressure plate 140 axially connected to the two limiting structures 112. The connection facilitates the adjustment of the position of the pressure plate 140, ensuring that a suitable amount of pressure is generated between the rotation limit block 130 and the rotation shaft 120. The pressure plate 140 is positioned between the two limiting structures 112 and is matched with the outer tube column 110 along the axial direction of the rotation shaft 120. This prevents the pressure plate 140 from moving along the axial direction of the rotation shaft 120 with the rotation limit block 130, thus ensuring the stability of the structure. The specific connection method between the pressure plate 140 and the outer tube column 110 is not limited in this embodiment, as long as it can press the rotation limit block 130 onto the rotation shaft 120.
[0066] See also some of the possible implementation methods. Figures 1 to 8As shown, in this embodiment of the application, the rotating limiting block 130 has a positioning groove 132 on the side surface facing the pressure plate 140, and the pressure plate 140 has a positioning protrusion 141 on the side surface facing the rotating limiting block 130. The positioning protrusion 141 is embedded in the positioning groove 132.
[0067] In some embodiments, the positioning protrusion 141 is slidably connected to the positioning groove 132. The positioning groove 132 can serve as a guide to ensure that the rotation limit block 130 moves axially along the rotation shaft 120. On the other hand, it can also limit the position of the rotation limit block 130 to prevent the rotation limit block 130 from rotating together with the rotation shaft 120, thus ensuring the limiting effect of the steering control system 100 of this application on the angle of steering wheel rotation.
[0068] See also some of the possible implementation methods. Figures 1 to 8 As shown, the embodiment of this application also includes: a cover plate assembly 150, which is fixedly connected to the outer tube column 110 and presses against the pressure plate 140.
[0069] In a specific implementation, a cover plate assembly 150 is provided on the outer tube column 110. The cover plate assembly 150 is in abutting contact with the pressure plate 140, thereby pressing the rotation limit block 130 onto the rotation shaft 120. The pressure plate 140 can be configured to slide radially with the outer tube column 110 along the rotation shaft 120. The cover plate assembly 150 presses the pressure plate 140, causing the pressure plate 140 to slide until it is in abutting contact with the rotation limit block 130. In this way, the same set of cover plate assemblies 150 and pressure plates 140 can be adapted to rotation limit blocks 130 of different sizes, which is beneficial to improving its applicability and reducing the mold opening cost in the production and assembly of the steering control system 100.
[0070] See also some of the possible implementation methods. Figures 1 to 8 As shown, the cover plate assembly 150 of this application embodiment further includes: a cover plate body 151 and an elastic member 152, wherein the cover plate body 151 is disposed on one side of the pressure plate 140 away from the rotation limiting block 130 and is spaced apart from the pressure plate 140, the cover plate body 151 is fixedly connected to the outer tube column 110 and covers the guide groove 111, at least one of the cover plate body 151 and the pressure plate 140 is provided with an installation groove 1511; the elastic member 152 corresponds to the installation groove 1511 and is disposed in the corresponding installation groove 1511, and the cover plate body 151 applies a pre-force to the pressure plate 140 through the elastic member 152.
[0071] Furthermore, an elastic element 152 is provided between the cover plate body 151 and the pressure plate 140. When the pressure plate 140 abuts against the rotation limiting block 130, the elastic element 152 is compressed, and the cover plate body 151 is fixedly connected to the outer tube column 110. The elastic force of the elastic element 152 pushes the pressure plate 140 to press the pressure plate 140 tightly onto the rotation limiting block 130, thereby ensuring that the internal thread 131 of the rotation limiting block 130 meshes with the external thread 1211 on the rotating shaft 120. The elastic element 152 can be a spring or other elastic structure, and this embodiment does not limit this. The cover plate body 151 is fixedly connected to the outer peripheral wall of the outer tube column 110 to cover the guide groove 111, and can also protect the internal pressure plate 140 and the steering limiting block and other structures.
[0072] In addition, at least one of the cover plate body 151 and the pressure plate 140 is provided with a mounting groove 1511, and the elastic element 152 is at least partially disposed in the mounting groove 1511. The mounting groove 1511 can limit the elastic element 152, ensuring that the elastic element 152 is compressed radially along the rotation axis 120, avoiding misalignment of the elastic element 152, and helping to ensure the structural stability of the cover plate assembly 150.
[0073] See also some of the possible implementation methods. Figure 1 , Figure 5 , Figure 7 and Figure 9 As shown, in this embodiment of the application, both the external thread 1211 and the internal thread 131 are double-threaded.
[0074] It is understandable that, due to the limited space inside the outer tube column 110, the use of double-threaded external threads 1211 and internal threads 131 can improve transmission efficiency, increase lead, and thus save space. At the same time, double-threaded threads can withstand greater tensile and shear forces, which is beneficial to improving the structural strength of the rotating shaft 120 and the rotating limit block 130.
[0075] See also some of the possible implementation methods. Figure 1 , Figure 2 , Figure 5 , Figure 7 and Figure 9 As shown, the rotation limiting block 130 of this application embodiment includes: a limiting frame 133 and a wrapping member 134. The wrapping member 134 covers the outside of the limiting frame 133. The limiting frame 133 has two limiting heads 1331 extending out of the wrapping member 134. The limiting heads 1331 correspond to and limit the limiting member 1212.
[0076] It should be noted that, in order to ensure the overall structural strength of the steering control system 100, the outer column 110 is made of metal, and the limiting frame 133 can be made of a metal material with high hardness to improve the structural strength of the rotation limiting block 130 and ensure the stability of the steering control system 100. The wrapping part 134 can be made of plastic and covers the outside of the limiting frame 133. In this way, when the rotation limiting block 130 slides relative to the outer column 110, the wrapping part 134 slides with the groove wall of the guide groove 111 of the outer column 110. The friction between the plastic part and the metal part can reduce the friction between the wrapping part 134 and the guide groove 111, thereby reducing the wear of the rotation limiting block 130. The specific materials of the limiting frame 133 and the wrapping part 134 are not limited in this embodiment, as long as they can ensure the structural strength of the rotation limiting block 130 and ensure that the guide limiting block can slide smoothly along the guide groove 111.
[0077] In addition, the limiting frame 133 also has two limiting heads 1331 extending out of the wrapping member 134. The limiting heads 1331 are used to form a limiting engagement with the limiting member 1212. The side of the limiting head 1331 that contacts the limiting member 1212 can be set as a slope to avoid interference between the limiting head 1331 and the limiting member 1212 when the rotating shaft 120 rotates, which would affect the rotation of the limiting member 1212. This ensures that the limiting head 1331 will only contact the limiting member 1212 when the steering wheel is rotated to a preset angle. The shape and structure of the limiting member 1212 can be adjusted according to the limiting head 1331. This application embodiment does not limit this. For example, the limiting member 1212 can be a plate-shaped structure, and the side of it that contacts the limiting head 1331 matches the shape of the limiting head 1331. Alternatively, the limiting member 1212 can be set as a cylindrical limiting pin with a pin hole 1213 opened on the rotating shaft 120. In this way, when assembling the limiting member 1212, the limiting pin can be directly pressed into the pin hole 1213, which is beneficial to improving the assembly efficiency of the limiting member 1212.
[0078] See Figure 1 As shown in the figure, this application embodiment also provides a vehicle, including: any of the above-described steering control systems 100.
[0079] The structure and working principle of the steering control system 100 have been described in detail in the above embodiments, and will not be repeated here.
[0080] In this embodiment of the application, by installing the steering control system 100 in the vehicle, the rotation angle of the steering wheel can be effectively limited, and the structure has strong stability, which is conducive to ensuring the safe and stable driving of the vehicle. At the same time, it can also reduce the noise generated when turning the steering wheel, which helps to improve the driving experience of the vehicle.
[0081] In summary, the steering control system 100 and vehicle provided in this application embodiment include an outer column 110, a rotating shaft 120, and a rotation limiting block 130. The rotating shaft 120 is disposed inside the outer column 110 and connected to the steering wheel. An external thread 1211 is provided on the rotating shaft 120, and an internal thread 131 is provided on the rotation limiting block 130. The internal thread 131 and the external thread 1211 cooperate with each other. When the steering wheel drives the rotating shaft 120 to rotate, the rotation limiting block 130 moves along the axial direction of the rotating shaft 120. Limiting elements 1212 are provided on both sides of the external thread 1211 along the axial direction. When the rotation limiting block 130 moves relative to the rotating shaft 120 to contact one of the limiting elements 1212, the rotation limiting block 130 and the limiting element 1212 form a limiting cooperation, thereby preventing the rotating shaft 120 from continuing to rotate and realizing the limiting effect on the rotation angle of the steering wheel. This reduces the contact time between the rotation limit block 130 and the limit member 1212, thereby reducing the contact stress between them and improving the stability of the steering control system 100. At the same time, it also reduces the noise generated by the collision between the rotation limit block 130 and the limit member 1212, improving the driving experience of the vehicle.
[0082] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
[0083] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.
[0084] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.
[0085] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).
[0086] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.
[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A steering control system (100) for a vehicle, characterized in that, include: External tubular column (110); A rotating shaft (120) is provided inside the outer column (110). The rotating shaft (120) is configured to connect with the steering wheel of the vehicle. An external thread (1211) is provided on the peripheral wall surface of the rotating shaft (120). Limiting members (1212) are provided on both sides of the external thread (1211) along the axial direction of the rotating shaft (120). A rotation limiting block (130) is movably disposed between the rotation shaft (120) and the outer tube column (110) along the axial direction of the rotation shaft (120). The rotation limiting block (130) has an internal thread (131) that mates with the external thread (1211). The rotation limiting block (130) is configured to move along the axial direction of the rotation shaft (120) when the rotation shaft (120) rotates and to engage with the limiting member (1212).
2. The steering control system (100) according to claim 1, characterized in that, The rotation limit block (130) is guided and engaged with the outer tube column (110).
3. The steering control system (100) according to claim 2, characterized in that, The outer tube column (110) is provided with a guide groove (111), which extends along the axial direction of the rotating shaft (120); The rotation limiting block (130) is partially embedded in the guide groove (111) along the radial direction of the rotation axis (120), and the rotation limiting block (130) moves along the guide groove (111).
4. The steering control system (100) according to claim 3, characterized in that, Also includes: A pressure plate (140) is provided in the guide groove (111) and located on the side of the rotation limiting block (130) facing away from the rotation shaft (120). The pressure plate (140) is connected to the outer tube column (110) and is in radial contact with the rotation limiting block (130) along the rotation shaft (120).
5. The steering control system (100) according to claim 4, characterized in that, The rotating limiting block (130) has a positioning groove (132) on the side surface facing the pressure plate (140). The pressure plate (140) has a positioning protrusion (141) on the side facing the rotation limit block (130), and the positioning protrusion (141) is embedded in the positioning groove (132).
6. The steering control system (100) according to claim 4, characterized in that, Also includes: The cover plate assembly (150) is fixedly connected to the outer tube column (110) and presses against the pressure plate (140).
7. The steering control system (100) according to claim 6, characterized in that, The cover plate assembly (150) also includes: The cover plate body (151) is located on the side of the pressure plate (140) facing away from the rotation limiting block (130) and is spaced apart from the pressure plate (140). The cover plate body (151) is fixedly connected to the outer tube column (110) and covers the guide groove (111). At least one of the cover plate body (151) and the pressure plate (140) is provided with an installation groove (1511). An elastic element (152) is provided in the corresponding mounting groove (1511) and the cover plate body (151) applies a pre-force to the pressure plate (140) through the elastic element (152).
8. The steering control system (100) according to any one of claims 1-7, characterized in that, Both the external thread (1211) and the internal thread (131) are double-threaded.
9. The steering control system (100) according to claim 4, characterized in that, The rotation limiting block (130) includes: The limiting frame (133) and the wrapping piece (134) are provided, the wrapping piece (134) covering the outside of the limiting frame (133), the limiting frame (133) having two limiting heads (1331) extending out of the wrapping piece (134), the limiting heads (1331) corresponding to and limiting the limiting piece (1212).
10. A vehicle, characterized in that, include: The steering control system (100) according to any one of claims 1-9.