A steering inner tube, a steering column, a steering device and a vehicle

Abstract

The application relates to the technical field of steering, and provides a steering inner tube, a steering column, a steering device and a vehicle. Part of the tube wall of the steering inner tube is configured as a tearing part. The steering inner tube has a collapsed state. In the collapsed state, the tearing part is torn from the steering inner tube. The steering inner tube, the steering column, the steering device and the vehicle provided by the application can reduce the structural complexity, and can reduce the space occupation and cost.

Description

Technical Field

[0001] This application relates to the field of steering technology, and more particularly to a steering inner tube, a steering column, a steering device, and a vehicle. Background Technology

[0002] The vehicle's steering column includes an inner steering tube and an intermediate steering shaft housed within the inner steering tube. The inner steering tube is fixed to the vehicle body via relevant components, allowing the steering wheel mounted on the intermediate steering shaft to be positioned in the driver's seat, thus enabling vehicle steering operations.

[0003] In related technologies, the steering inner tube absorbs the collapse energy through the squeezing friction of steel wires, steel strips or metal sliders set on it. However, the setting of these components will make the structure more complicated, and will occupy more space and increase the cost. Utility Model Content

[0004] This application provides a steering inner tube, steering column, steering device, and vehicle, which can reduce structural complexity and space occupation and cost.

[0005] The technical solution of this application embodiment is implemented as follows:

[0006] One embodiment of this application provides a steering inner tube, wherein a portion of the tube wall of the steering inner tube is configured as a tear, and the steering inner tube has a collapsed state, wherein the tear is torn from the steering inner tube in the collapsed state.

[0007] In one embodiment, a slit is formed on at least one side of the tear along its circumferential direction on the inner steering tube, the tear being capable of tearing along the length of the slit, and the depth of the slit being less than the wall thickness of the inner steering tube.

[0008] In one embodiment, a portion of the tear is bent in the radial direction of the steering inner tube away from the axis of the steering inner tube to form a tear end, and the tear end has a gap with the steering inner tube in the circumferential direction.

[0009] Another embodiment of this application provides a steering column, including:

[0010] The steering inner tube in any of the above embodiments;

[0011] A connecting bracket is disposed on the steering inner tube, and a portion of the torn part is fixedly connected to the connecting bracket;

[0012] The steering inner tube also has a connected state, in which the steering inner tube can move synchronously with the connecting bracket; in the collapsed state, the steering inner tube can move relative to the connecting bracket, so that the connecting bracket tears the torn portion.

[0013] In one embodiment, the connecting bracket has a guide groove, and the steering inner tube is movably disposed in the guide groove. In the collapsed state, the steering inner tube can be guided to move along the guide groove so that the torn portion can move on the bottom surface of the guide groove.

[0014] In one embodiment, the guide groove includes a first groove and a second groove connected along its guiding direction. The bottom surface of the first groove is lower than the bottom surface of the second groove. The depth of the first groove gradually increases or decreases along the guiding direction of the guide groove. A portion of the tear is bent toward the first groove to form a tear end. The tear end is fixedly connected to the connecting bracket. The tear end is disposed in the first groove. In the collapsed state, the bottom surface of the first groove can squeeze the tear end, and the torn portion can move on the bottom surface of the second groove.

[0015] In one embodiment, the guide groove has a flared portion near its opening along the depth direction, and the steering inner tube is supported on the side wall of the flared portion.

[0016] In one embodiment, one of the tear portion and the connecting bracket forms a limiting groove, and the other of the tear portion and the connecting bracket forms a boss, the boss being interference-fitted with the limiting groove.

[0017] In one embodiment, the steering column includes a fastener that passes through the steering inner tube and the connecting bracket;

[0018] In the collapsed state, the fastener disconnects the connection between the steering inner tube and the connecting bracket, causing relative movement between the steering inner tube and the connecting bracket.

[0019] In one embodiment, the steering column includes an outer steering tube and a telescopic mechanism. The outer steering tube is used to connect to the vehicle body, and at least a portion of the inner steering tube is slidably disposed within the outer steering tube. In the connected state, the telescopic mechanism is configured to drive the connecting bracket to extend or retract the inner steering tube. In the collapsed state, the telescopic mechanism is capable of locking the outer steering tube and the connecting bracket.

[0020] In one embodiment, the telescopic mechanism includes an adjusting screw and an adjusting nut. The adjusting nut is disposed on the connecting bracket. One end of the adjusting screw is connected to the steering outer tube, and the other end of the adjusting screw is threadedly engaged with the adjusting nut.

[0021] In one embodiment, the steering column further includes a motor and a reduction mechanism. The reduction mechanism is disposed on the steering outer tube, and the motor is disposed on the reduction mechanism. The motor is driven to the adjusting screw through the reduction mechanism.

[0022] In another aspect, this application provides a steering device, including the steering column of any of the above embodiments.

[0023] Another aspect of this application provides a vehicle including the steering device described in the above embodiments.

[0024] This application discloses a steering inner tube, a steering column, a steering device, and a vehicle. By using a portion of the inner tube wall as a tearing section, it inherently possesses collapsible capability. Thus, in a collapsible state, the tearing section can tear from the inner tube under external force. On the one hand, it can buffer and absorb the collapsible energy during the collapse of the inner tube, resulting in good safety. On the other hand, since a portion of the inner tube wall is used as a tearing section, the number of related energy-absorbing components can be significantly reduced, simplifying the structure and lowering the requirements for assembly processes, space occupation, and manufacturing costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a steering column provided in an embodiment of this application;

[0026] Figure 2 for Figure 1 A cross-sectional view along the AA direction, showing the inner swivel tube in a connected state;

[0027] Figure 3 for Figure 2 A magnified view of point B;

[0028] Figure 4 A cross-sectional schematic diagram of a steering column provided in another embodiment of this application, wherein the inner steering tube is in a collapsed state;

[0029] Figure 5 This is a schematic diagram of the structure of a connecting bracket provided in another embodiment of this application;

[0030] Figure 6 A cross-sectional view of the connecting bracket and protrusion provided in another embodiment of this application;

[0031] Figure 7This is a schematic diagram of the structure of the steering inner tube provided in another embodiment of this application;

[0032] Figure 8 for Figure 7 A partial cross-sectional diagram;

[0033] Figure 9 for Figure 7 A schematic diagram of a partial cross-section from another perspective;

[0034] Figure 10 for Figure 7 A schematic diagram of a partial cross-section from another perspective.

[0035] Explanation of reference numerals in the attached figures

[0036] 100. Steering column; 1. Inner steering tube; 1a. Tear section; 1a1. Tear end; 1a2. Protrusion; 1b. Cut; 1c. Second mounting hole; 1d. Clearance; 2. Outer steering tube; 2a. Mounting bracket; 3. Steering shaft; 4. Connecting bracket; 4a. Guide groove; 4a1. First groove; 4a2. Second groove; 4a3. Flared section; 4b. Limiting groove; 4c. First mounting hole; 4d. Connecting lug; 4d1. Fixing hole; 5. Fastener; 6. Telescopic mechanism; 61. Adjusting nut; 62. Adjusting screw; 7. Motor; 8. Reduction mechanism; 9. Bearing. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0039] In the following description, the terms "first, second, third" are used merely to distinguish similar objects and do not represent a specific ordering of objects. It is understood that "first, second, third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0040] Unless otherwise defined, all technical and scientific terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the embodiments of this application is for the purpose of describing the embodiments of this application only and is not intended to limit this application.

[0041] In autonomous driving mode, the steering wheel needs to adapt to different driving scenarios, potentially requiring it to retract or fold down to create space and provide a more comfortable driving experience. In a smart cockpit, to meet diverse driving needs and passenger experiences, the steering wheel requires more automatic adjustment functions. Besides the retraction or folding function in autonomous driving mode, other modes need to be considered, such as a "double bed" mode or a "welcome" mode. In double bed mode, passengers may need the steering wheel fully retracted to the dashboard to free up space and provide a more comfortable resting environment. In welcome mode, the steering wheel may automatically adjust to a specific position for easier passenger entry and exit from the cabin.

[0042] For safety and reliability, crumple zone design is a crucial component. Through structural optimization and material selection of the steering column, crumple zone design ensures that in the event of a frontal collision, the inner steering tube can contract, deform, or fold within a certain range to absorb the energy from the steering wheel impact, gradually slowing the driver's body movement and minimizing potential injury. Furthermore, it provides a larger survival space in the passenger compartment after a collision. In existing technologies, crumple zone energy absorption is achieved through the deformation, tearing, or compression deformation of a steel strip or metal block mounted on the inner steering tube. However, these designs increase the number of parts, leading to assembly difficulties, increased space requirements, and higher costs.

[0043] In view of this, one embodiment of this application provides a steering inner tube 1, please refer to... Figures 1 to 10 A portion of the inner wall of the steering tube 1 is configured as a tear section 1a. The steering tube 1 has a collapsed state, in which the tear section 1a tears from the steering tube 1.

[0044] The tear section 1a refers to the part that can tear under external force to buffer and absorb the collapse energy.

[0045] The collapse state refers to the ability of the inner tube 1 to move and compress along a preset direction, such as the axial direction, under the action of external force in order to absorb impact energy.

[0046] For example, a steering shaft 3 is provided inside the steering inner tube 1. A portion of the steering shaft 3 can be fixedly installed in the steering inner tube 1 by a bearing 9. One end of the steering shaft 3 relative to the steering inner tube 1 is connected to the steering wheel. The steering wheel can rotate relative to the steering inner tube 1 through the steering shaft 3 and the bearing 9 to achieve vehicle steering.

[0047] The steering inner tube 1 provided in this application embodiment has the ability to collapse by using part of its tube wall as a tear section 1a. In this way, under the action of external force, the tear section 1a can tear from the steering inner tube 1. On the one hand, it can buffer and absorb the collapse energy when the steering inner tube 1 collapses, which is safe. On the other hand, since part of the tube wall of the steering inner tube 1 is used as the tear section 1a, the setting of related energy-absorbing components can be greatly reduced, the structure is simple, and the requirements of assembly process, space occupation and manufacturing cost are reduced.

[0048] Another embodiment of this application provides a steering column 100, please refer to... Figures 1 to 10 The steering column 100 includes a connecting bracket 4 and the steering inner tube 1 in the above embodiment. The connecting bracket 4 is disposed on the steering inner tube 1, and a portion of the tear 1a is fixedly connected to the connecting bracket 4. The steering inner tube 1 also has a connected state, in which the steering inner tube 1 can move synchronously with the connecting bracket 4; in a collapsed state, the steering inner tube 1 can move relative to the connecting bracket 4, so that the connecting bracket 4 tears the tear 1a.

[0049] The connecting bracket 4 refers to the bracket used to connect the steering inner tube 1 with other related components.

[0050] Synchronous motion refers to the steering inner tube 1 and the connecting bracket 4 moving in the same direction at the same speed.

[0051] The connection state refers to any state other than the collapse state, that is, the state when collapse has not occurred.

[0052] When the steering inner tube 1 is in the connected state, the steering inner tube 1 can move synchronously with the steering inner tube 4 to realize the position adjustment of the steering wheel; when the steering inner tube 1 is in the collapsed state, the steering inner tube 1 and the connecting bracket 4 move relative to each other. At this time, the connecting bracket 4 will apply a force to the tear 1a, and the tear 1a will tear under the action of the force to buffer and absorb the collapse energy during the collapse.

[0053] The steering column 100 provided in this application, based on the advantages of the steering inner tube 1 mentioned above, also has the characteristics of simple structure, small space occupation and low manufacturing cost.

[0054] In one embodiment, please refer to Figure 4 , Figure 7 , Figure 8 and Figure 10 A slit 1b is formed on at least one side of the tear 1a along its circumferential direction on the inner tube 1. The tear 1a is capable of tearing along the length of the slit 1b. The depth of the slit 1b is less than the wall thickness of the inner tube 1.

[0055] It should be noted that the length direction of slit 1b refers to the direction in which the slit extends along the axial direction of the inner tube of the steering mechanism. The depth of slit 1b refers to the radial direction of the slit along the inner tube of the steering mechanism.

[0056] For example, a slit 1b may be formed on either side of the tear 1a along its circumferential direction on the inner tube 1; of course, a slit 1b may be formed on either side of the tear 1a along its circumferential direction on the inner tube 1.

[0057] The depth of the slit 1b is less than the wall thickness of the steering inner tube 1, which can ensure that there is a certain connection strength between the tear 1a and the steering inner tube 1, so that the connecting bracket 4 can move synchronously with the steering inner tube 1 in the connected state, reducing the occurrence of accidental tearing. In the collapsed state, the tear 1a can tear along the length of the slit 1b.

[0058] Here, by setting the slit 1b, the tear section 1a can be directionally torn along the length of the slit 1b in the collapsed state. This can generate a stable suction capacity and absorb the collapse energy more evenly, thereby reducing the impact injury to the driver.

[0059] In one embodiment, for example, the depth of the slit 1b and the width of the two slits 1b can be set as needed. The slits 1b can be manufactured by machining engraving.

[0060] In one embodiment, please refer to Figure 3 , Figure 4 as well as Figures 7 to 10 The tear section 1a is bent in the radial direction of the steering inner tube 1 away from the axis of the steering inner tube to form a tear end 1a1. The tear end 1a1 has a gap 1d between it and the steering inner tube 1 in the circumferential direction of the steering inner tube 1.

[0061] The tear end 1a1 refers to the part that is separated from the inner tube 1 when connected.

[0062] Here, by having a gap 1d between the tear end 1a1 and the steering inner tube 1 in the circumferential direction of the steering inner tube 1, the performance of the tear portion 1a can be optimized to help the tear portion 1a to be stable or tear along the guide when collapse occurs.

[0063] In one embodiment, please refer to Figure 3 , Figure 5 and Figure 6 The connecting bracket 4 has a guide groove 4a, and the steering inner tube 1 is movably disposed in the guide groove 4a. In the collapsed state, the steering inner tube 1 can be guided to move along the guide groove 4a so that the torn part 1a after tearing can move along the bottom surface of the guide groove 4a.

[0064] Here, by forming a guide groove 4a on the connecting bracket 4, in the connected state, the guide groove 4a can limit the steering inner tube 1 to a certain extent; in the collapsed state, the connecting bracket 4 and the steering inner tube 1 move relative to each other, the steering inner tube 1 can move along the guide groove 4a, and the tear 1a is torn under the action of the connecting bracket 4. The torn part 1a can move along the bottom surface of the guide groove 4a after the collapse, so as to ensure that the steering inner tube 1 can still fit tightly with the connecting bracket 4 after the collapse, so as to reduce the interference of other related components on the tear 1a after the collapse, improve the uniformity of the collapse suction capacity of the steering column 100, and improve the yield and performance consistency of the steering column 100.

[0065] For example, in one embodiment, the guiding direction of the guide groove 4a, the axial direction of the steering inner tube 1, and the collapse direction are the same.

[0066] It should be noted that the guiding direction of the guide groove 4a refers to the extension direction of the guide groove 4a, so that the inner tube 1 of the steering tube can be guided to move along the extension direction of the guide groove 4a.

[0067] In one embodiment, please refer to Figure 5 and Figure 6 The guide groove 4a includes a first groove 4a1 and a second groove 4a2 connected along its guiding direction. The bottom surface of the first groove 4a1 is lower than the bottom surface of the second groove 4a2. The groove depth of the first groove 4a1 gradually increases or decreases along the guiding direction of the guide groove 4a. A portion of the tear part 1a bends toward the first groove 4a1 to form a tear end 1a1. The tear end 1a1 is fixedly connected to the connecting bracket 4. The tear end 1a1 is located in the first groove 4a1. In the collapsed state, the bottom surface of the first groove 4a1 can squeeze the tear end 1a1. The torn part 1a can move on the bottom surface of the second groove 4a2 after tearing.

[0068] Here, by dividing the guide groove 4a into a first groove 4a1 and a second groove 4a2 along its guiding direction, in the connected state, since the bottom surface of the first groove 4a1 is lower than the bottom surface of the second groove 4a2, the first groove 4a1 can accommodate the bent tear end 1a1. After collapse, the bottom surface of the first groove 4a1 can squeeze the tear end 1a1, so that the tear portion 1a located behind the tear end 1a1 can be torn along the squeezing guide of the bottom surface of the first groove 4a1. The torn tear portion 1a can then move along the guide along the bottom surface of the second groove 4a2. In this way, a specific movement trajectory can be achieved during the collapse process, and the tight fit between the tear portion 1a and the connecting bracket 4 can be ensured, further improving the uniformity of the collapse stabilizing force of the steering column 100.

[0069] In one embodiment, please refer to Figure 5The guide groove 4a has a flared portion 4a3 near its opening along the depth direction, and the inner steering tube 1 is supported on the side wall of the flared portion 4a3.

[0070] The flared section 4a3 refers to the groove width that gradually increases along the depth direction from the bottom wall of the groove near the guide groove 4a to the bottom wall of the groove away from the guide groove 4a.

[0071] In other words, the bottom surface of the guide groove 4a is used for the movement of the torn strip after tearing, while the side wall of the flared part 4a3 is used to support the steering inner tube 1. In this way, the interference of the steering inner tube 1 on the torn part 1a when it collapses can be reduced, thereby improving the collapse smoothing force of the steering column 100.

[0072] In one embodiment, please refer to Figure 5 and Figure 6 One of the tear portion 1a and the connecting bracket 4 forms a limiting groove 4b, and the other of the tear portion 1a and the connecting bracket 4 forms a boss, which is interference-fitted with the limiting groove 4b.

[0073] For example, the tear end 1a1 of the tear portion 1a can be formed with a protrusion 1a2, and the connecting bracket 4 can be formed with a limiting groove 4b. The limiting groove 4b is disposed at one end of the guide groove 4a and communicates with the guide groove 4a. The protrusion 1a2 is interference-fitted with the limiting groove.

[0074] In this way, the tear part 1a and the connecting bracket 4 are interference-fitted by the protrusion 1a2 and the limiting groove 4b. On the one hand, the tear part 1a can be fixed to withstand the force during collapse, thereby enhancing the stability of the tear part 1a. On the other hand, the setting of the protrusion 1a2 and the limiting groove 4b makes the connection more stable and also facilitates installation, resulting in high installation efficiency.

[0075] In one embodiment, please refer to Figures 3 to 8 The steering column 100 includes a fastener 5, which passes through the steering inner tube 1 and the connecting bracket 4. In the collapsible state, the fastener 5 disconnects the connection between the steering inner tube 1 and the connecting bracket 4, causing relative movement between the steering inner tube 1 and the connecting bracket 4.

[0076] For example, the connecting bracket 4 may have a first mounting hole 4c extending through its depth direction on the bottom surface of the guide groove 4a, and the connecting inner tube may have a second mounting hole 1c extending through its wall thickness. The fastener 5 may be an injection pin or the like, which passes through the first mounting hole 4c and the second mounting hole to connect and lock the steering inner tube 1 and the connecting bracket 4, so that the steering inner tube 1 and the connecting bracket 4 can move synchronously in the connected state.

[0077] In this way, by setting fasteners 5 and passing them through the steering inner tube 1 and the connecting bracket 4, in the collapsing state, the steering inner tube 1 and the connecting bracket 4 move relative to each other to interact with the fasteners 5, so as to shear the fasteners 5 and generate shear force. This process can provide peak absorption capacity to absorb the collapsing energy. Subsequently, the connecting bracket 4 tears the tear section 1a. This process can provide a stable and continuous absorption capacity and energy absorption path. Through the two processes, the requirements of the steering column 100 for energy absorption capacity and energy absorption path in the collapse can be met.

[0078] For example, in one embodiment, the peak suction capacity can be adjusted by adjusting the material and diameter of the first mounting hole 4c, the second mounting hole 1c, and the fastener 5 to meet design requirements.

[0079] For example, in one embodiment, the magnitude of the collapse suction capacity can be adjusted by adjusting the width and length of the tear 1a, the wall thickness of the inner tube 1, and the distance between the connecting bracket 4 and the inner tube.

[0080] In one embodiment, please refer to Figures 1 to 4 The steering column 100 includes an outer steering tube 2 and a telescopic mechanism 6. The outer steering tube 2 is used to connect to the vehicle body. At least a portion of the inner steering tube 1 is slidably disposed inside the outer steering tube 2. In the connected state, the telescopic mechanism 6 is configured to drive the connecting bracket 4 to extend or retract the inner steering tube 1. In the collapsed state, the telescopic mechanism 6 can lock the outer steering tube 2 and the connecting bracket 4.

[0081] The telescopic mechanism 6 can refer to a mechanism that can extend or retract itself to drive the connecting bracket 4 to extend or retract the steering inner tube 1. For example, the telescopic mechanism 6 can be a telescopic hydraulic cylinder or a pneumatic cylinder, etc., without limitation.

[0082] For example, a mounting bracket 2a is provided on the outer wall of the steering column 2. The mounting bracket 2a can be connected and fixed to the vehicle body beam through the mounting holes thereon so as to mount the steering column 100 on the vehicle body.

[0083] In this way, through the telescopic mechanism 6, in the connected state, the steering inner tube 1 is driven to extend and retract within the steering outer tube 2 by driving the connecting bracket 4, which facilitates the adjustment of the steering wheel position and provides a good user experience; in the collapsed state, the telescopic mechanism 6 can lock the steering outer tube 2 and the connecting bracket 4, so that the steering inner tube 1 moves relative to the connecting bracket 4 when it collapses, so that the torn part 1a can stably absorb energy.

[0084] In one embodiment, please refer to Figures 1 to 4 The telescopic mechanism 6 includes an adjusting screw 62 and an adjusting nut 61. The adjusting nut 61 is mounted on the connecting bracket 4. One end of the adjusting screw 62 is connected to the steering outer tube 2, and the other end of the adjusting screw 62 is threadedly engaged with the adjusting nut 61.

[0085] For example, the connecting bracket 4 may be formed with connecting ears 4d spaced apart along the width direction of the guide groove 4a, the connecting ears 4d being formed with fixing holes 4d1, and the adjusting nut 61 being fixed in the fixing holes 4d1.

[0086] In this way, by adjusting the lead screw 62 and the adjusting nut 61, the steering inner tube 1 can be stably and conveniently driven to extend and retract along its circumference within the steering outer tube 2. In the collapsed state, the adjusting nut 61 and the adjusting lead screw 62 can lock the steering outer tube 2 and the connecting bracket 4 through self-locking, reducing the movement of the connecting bracket 4 in the collapsed state.

[0087] In one embodiment, please refer to Figure 1 and Figure 2 The steering column 100 also includes a motor 7 and a reduction mechanism 8. The reduction mechanism 8 is located on the steering outer tube 2, and the motor 7 is located on the reduction mechanism 8. The motor 7 is driven and connected to the adjusting screw 62 through the reduction mechanism 8.

[0088] For example, the reduction mechanism 8 is fixed to the outer wall of the steering outer tube 2 by screws or bolts, the motor 7 can be driven to the input end of the reduction mechanism 8, and the output end of the reduction mechanism 8 can be driven to the adjusting screw 62.

[0089] Here, the electric adjustment of the steering wheel can be achieved by setting the motor 7. Compared with the traditional mechanical locking and releasing mechanism, the electric drive steering column 100 is more flexible, convenient and precise. The steering wheel position can be adjusted by button operation. The reduction mechanism 8 can convert the high speed and low torque output of the motor 7 into low speed and high torque, amplifying the adjustment force while ensuring smooth action, reducing jerking, and providing a good user experience.

[0090] In another aspect, this application provides a steering device, including the steering column 100 in any of the above embodiments.

[0091] The steering device provided in this application, based on the advantages of the aforementioned steering column 100, features a simple structure, small footprint, and low cost.

[0092] Another aspect of this application provides a vehicle including the steering device described in the above embodiments.

[0093] For example, the vehicle can be a gasoline vehicle, a hybrid vehicle, a range-extended vehicle, or a pure electric vehicle, etc.

[0094] The vehicle provided in this application, based on the advantages of the aforementioned steering device, has the characteristics of large space and long range.

[0095] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. All modifications, equivalent substitutions, improvements, etc., within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A steering inner tube, characterized in that, A portion of the wall of the steering inner tube is configured as a tear, and the steering inner tube has a collapsed state in which the tear tears from the steering inner tube.

2. The steering inner tube according to claim 1, characterized in that, A slit is formed on at least one side of the tear along its circumferential direction on the inner tube of the steering system. The tear is capable of tearing along the length of the slit, and the depth of the slit is less than the wall thickness of the inner tube of the steering system.

3. The steering inner tube according to claim 1 or 2, characterized in that, The tear portion is bent in the radial direction of the steering inner tube away from the axis of the steering inner tube to form a tear end, and the tear end has a gap with the steering inner tube in the circumferential direction.

4. A steering column, characterized in that, include: The steering inner tube according to any one of claims 1 to 3; A connecting bracket is disposed on the steering inner tube, and a portion of the torn part is fixedly connected to the connecting bracket; The steering inner tube also has a connected state, in which the steering inner tube can move synchronously with the connecting bracket; in the collapsed state, the steering inner tube can move relative to the connecting bracket, so that the connecting bracket tears the torn portion.

5. The steering column according to claim 4, characterized in that, The connecting bracket has a guide groove, and the steering inner tube is movably disposed in the guide groove. In the collapsed state, the steering inner tube can be guided to move along the guide groove so that the torn part can move on the bottom surface of the guide groove.

6. The steering column according to claim 5, characterized in that, The guide groove includes a first groove and a second groove along its guiding direction. The bottom surface of the first groove is lower than the bottom surface of the second groove. The depth of the first groove gradually increases or decreases along the guiding direction of the guide groove. A portion of the tear is bent toward the first groove to form a tear end. The tear end is fixedly connected to the connecting bracket. The tear end is located in the first groove. In the collapsed state, the bottom surface of the first groove can squeeze the tear end. The torn portion can move on the bottom surface of the second groove.

7. The steering column according to claim 5 or 6, characterized in that, The guide groove has a flared section near its opening along the depth direction, and the inner steering tube is supported on the side wall of the flared section.

8. The steering column according to claim 4, characterized in that, One of the tear portion and the connecting bracket forms a limiting groove, and the other of the tear portion and the connecting bracket forms a boss, which is interference-fitted with the limiting groove.

9. The steering column according to claim 4, characterized in that, The steering column includes fasteners that pass through the steering inner tube and the connecting bracket; In the collapsed state, the fastener disconnects the connection between the steering inner tube and the connecting bracket, causing relative movement between the steering inner tube and the connecting bracket.

10. The steering column according to claim 4, characterized in that, The steering column includes an outer steering tube and a telescopic mechanism. The outer steering tube is used to connect to the vehicle body. At least a portion of the inner steering tube is slidably disposed within the outer steering tube. In the connected state, the telescopic mechanism is configured to drive the connecting bracket to extend or retract the inner steering tube. In the collapsed state, the telescopic mechanism is capable of locking the outer steering tube and the connecting bracket.

11. The steering column according to claim 10, characterized in that, The telescopic mechanism includes an adjusting screw and an adjusting nut. The adjusting nut is disposed on the connecting bracket. One end of the adjusting screw is connected to the steering outer tube, and the other end of the adjusting screw is threadedly engaged with the adjusting nut.

12. The steering column according to claim 11, characterized in that, The steering column also includes a motor and a reduction mechanism. The reduction mechanism is disposed on the outer steering tube, and the motor is disposed on the reduction mechanism. The motor is driven and connected to the adjusting screw through the reduction mechanism.

13. A steering device, characterized in that, The steering column includes any one of claims 4 to 12.

14. A vehicle, characterized in that, Includes the steering device as described in claim 13.

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