Steering column crumple energy absorption device and vehicle

Abstract

The invention provides a steering column collapse energy-absorbing device and a vehicle, and relates to the field of steering column collapse technology.The steering column collapse energy-absorbing device comprises a first steering shaft, a column protection shell, a second steering shaft and an electromagnetic mechanism; the electromagnetic mechanism is arranged between the first steering shaft and the second steering shaft, and the electromagnetic mechanism is used for adjusting the crushing force between the first steering shaft and the second steering shaft according to the principle that like poles of a first electromagnet and a second electromagnet repel each other, so that the crushing force between the first steering shaft and the second steering shaft is adjustable. Therefore, different crushing forces required by different drivers and different steering wheel positions can be adapted. In this way, the problem that the predesigned fixed value crushing force of an existing steering column cannot meet the requirements of different posture characteristics of different drivers for the crushing force is solved.

Description

Technical Field

[0001] The present application relates to a steering column crushing technology, and more particularly to a steering column crushing energy absorption device and a vehicle. Background Art

[0002] The vehicle steering column is a component that connects the steering wheel and the steering gear. Through the steering column, the driver operates the steering wheel to transfer torque to the steering gear, which drives the steering gear to achieve vehicle steering. When a vehicle collision occurs, the driver will rush forward quickly under the action of inertia, and the chest of the human body will collide with the steering wheel. At this time, the steering column needs to have a collapse function to protect the driver.

[0003] In the related art, the existing collapsing function of the steering column is achieved by pre-designing the crushing force, and the pre-designed crushing force is usually a fixed value. The steering column can collapse and deform according to the pre-designed crushing force, thereby protecting the driver from a large impact force.

[0004] However, the crushing force required for different body characteristics of drivers varies greatly, and the preset crushing force of a fixed value cannot better protect the driver. If the crushing force is not suitable for the driver, it may even pose a certain safety hazard to the driver. Summary of the invention

[0005] In view of this, the present application provides a steering column crush energy absorption device and a vehicle, aiming to solve the problem that the fixed-value crushing force pre-designed for the existing steering column cannot meet the crushing force requirements of drivers with different body characteristics.

[0006] In order to achieve the above-mentioned purpose, the present application provides a steering column collapse energy absorption device and a vehicle, which adopt the following technical solutions:

[0007] In a first aspect, the present application provides a steering column collapse energy absorption device, comprising a first steering shaft, a column casing, a second steering shaft and an electromagnetic mechanism.

[0008] The first steering shaft is used to connect to the steering wheel of the vehicle, the second steering shaft is used to connect to the steering system of the vehicle, the first steering shaft is sleeved on the second steering shaft, the first steering shaft can move along the axial direction of the second steering shaft, the column guard is connected to the first steering shaft, and the column guard is used to be slidably connected to the frame of the vehicle.

[0009] The electromagnetic mechanism is disposed between the first steering shaft and the second steering shaft, and is used to adjust a crushing force between the first steering shaft and the second steering shaft.

[0010] By adopting the above technical solution, the electromagnetic mechanism makes the crushing force between the first steering shaft and the second steering shaft adjustable, and the different crushing forces suitable for the drivers are adjusted according to the different body characteristics of the drivers. It can be understood that when the driver is obese and heavy, the inertia of the driver is large when the vehicle collides, and the electromagnetic mechanism can increase the crushing force to protect the driver's safety, which better solves the problem that the fixed-value crushing force pre-designed in the existing steering column cannot meet the crushing force requirements of different drivers with different body characteristics.

[0011] In a possible implementation, the electromagnetic mechanism includes a first electromagnet, a second electromagnet and a controller;

[0012] The first electromagnet is arranged on the first steering shaft, the second electromagnet is arranged on the second steering shaft, and the opposite surfaces of the first electromagnet and the second electromagnet have the same polarity;

[0013] At least one of the first electromagnet and the second electromagnet is electrically connected to the controller, and the controller controls the magnetic force of at least one of the first electromagnet and the second electromagnet to adjust the crushing force between the first steering shaft and the second steering shaft.

[0014] Here, when the electromagnetic mechanism adjusts the crushing force, the controller adjusts the magnetic force between the first electromagnet and the second electromagnet by controlling the current in the first electromagnet or the second electromagnet according to the different body characteristics of the driver and matching the preset crushing force, thereby adjusting the crushing force between the first steering shaft and the second steering shaft.

[0015] In addition, due to the characteristics of the magnetic field, when the first electromagnet and the second electromagnet are close to each other, the magnetic force between the first electromagnet and the second electromagnet will increase, giving the driver a better buffering force and further protecting the driver's safety.

[0016] In a possible implementation manner, both the first electromagnet and the second electromagnet are electrically connected to the controller.

[0017] Here, the controller can control the current in the first electromagnet and the second electromagnet at the same time, and can more conveniently adjust the magnetic force between the first electromagnet and the second electromagnet at the same time, thereby expanding the magnetic force adjustment range between the first electromagnet and the second electromagnet, so that the electromagnetic mechanism can adapt to more drivers with different body characteristics, thereby improving its applicability.

[0018] In a possible implementation manner, the first electromagnet is disposed at an end of the first steering shaft facing the second steering shaft.

[0019] By adopting the above technical solution, the first electromagnet is arranged at the end of the first steering shaft toward the second steering shaft. When the first steering shaft moves toward the second steering shaft, the first electromagnet and the second electromagnet can respond quickly to provide resistance, that is, crushing force, to the first steering shaft and the second steering shaft.

[0020] In addition, when the displacement of the first steering shaft is large, there is an effect of not affecting the magnetic force between the first electromagnet and the second electromagnet.

[0021] In a possible implementation manner, the first electromagnet and the second electromagnet are both ring-shaped.

[0022] Here, when the annular first electromagnet and the second electromagnet provide crushing force to the first steering shaft and the second steering shaft, the crushing force applied to the first steering shaft and the second steering shaft is relatively uniform, thereby improving the movement stability of the first steering shaft and the second steering shaft.

[0023] In a possible implementation, the first electromagnet and the first steering shaft are in interference fit, and the second electromagnet and the second steering shaft are in interference fit.

[0024] By adopting the above technical solution, the interference fit has a simple structure, good centering, high load-bearing capacity, can withstand impact loads, has little weakening on the strength of the first steering shaft and the second steering shaft, and can improve the stability of the first electromagnet and the second electromagnet.

[0025] In a possible implementation, a retaining ring is sleeved on the second steering shaft, and the second electromagnet is arranged between the retaining ring and the first electromagnet.

[0026] By adopting the above technical solution, it can be understood that when the collision between the vehicles is more serious, the impact force on the driver is also greater, and the moving distance of the first steering shaft toward the second steering shaft is also greater. The retaining ring can limit the displacement of the first steering shaft to avoid more serious safety accidents caused by excessive displacement of the first steering shaft.

[0027] In a possible implementation, a detection member is further included, wherein the detection member is disposed on the first steering shaft and is electrically connected to the controller;

[0028] The detection member is configured to detect a displacement of the first steering shaft, and the controller adjusts the magnitude of the current passing through the first electromagnet and the second electromagnet according to the displacement to adjust the magnitude of the magnetic force between the first electromagnet and the second electromagnet.

[0029] By adopting the above technical solution, a detection member is added to the first steering shaft. When the first steering shaft moves, it can be understood that the greater the displacement of the first steering shaft, the greater the collision force on the vehicle, and the greater the safety hazard to the driver. After the detection member detects the displacement of the first steering shaft, the displacement information is transmitted to the controller. The controller controls the current between the first electromagnet and the second electromagnet to increase according to the displacement information and matches it with the preset data, thereby increasing the magnetic force between the first electromagnet and the second electromagnet, increasing the crushing force between the first steering shaft and the second steering shaft, and further protecting the safety of the driver.

[0030] In a second aspect, the present application provides a vehicle, comprising a vehicle body and the steering column crush energy absorption device;

[0031] The vehicle body has an information collection component, which is electrically connected to the electromagnetic mechanism, and is used to collect characteristic information of the driver of the vehicle body, wherein the characteristic information includes the height and weight of the driver;

[0032] The steering column crush energy absorption device is used to be arranged in the driving cab of the vehicle body, and the electromagnetic mechanism of the steering column crush energy absorption device adjusts the crush force between the first steering shaft and the second steering shaft when the characteristic information matches the preset crush force.

[0033] By adopting the above technical solution, the vehicle's information collection component first collects the driver's height and weight, inputs the driver's height and weight into the electromagnetic mechanism, and then when the driver's height and weight match the preset crushing force, the electromagnetic mechanism adjusts the crushing force between the first steering shaft and the second steering shaft according to the characteristic information, thereby setting different crushing forces for drivers with different body characteristics, meeting the crushing force requirements of drivers with different body characteristics, and improving the safety of drivers with different body characteristics.

[0034] In a possible implementation, when the vehicle body collides, the detection element detects a displacement signal of the first steering shaft;

[0035] The controller adjusts the magnitude of the current in the first electromagnet and the second electromagnet according to the characteristic information and the displacement signal and a matching preset crushing force curve.

[0036] By adopting the above technical solution, the detection component first detects the displacement information of the first steering shaft, and inputs the displacement information of the first steering shaft into the controller. The controller matches the displacement information with the preset data, controls the current passing through the first electromagnet and the second electromagnet to increase, thereby increasing the magnetic force between the first electromagnet and the second electromagnet, and improving the crushing force between the first steering shaft and the second steering shaft, thereby further protecting the safety of the driver.

[0037] In summary, this application has the following beneficial effects:

[0038] 1. The controller adjusts the magnetic force between the first electromagnet and the second electromagnet by controlling the current in the first electromagnet or the second electromagnet according to the different body characteristics of the driver and matching with the preset crushing force, thereby adjusting the crushing force between the first steering shaft and the second steering shaft, so as to set different crushing forces for drivers with different body characteristics, meet the crushing force requirements of drivers with different body characteristics, and improve the safety of drivers with different body characteristics.

[0039] 2. The controller can simultaneously control the current in the first electromagnet and the second electromagnet to more conveniently adjust the magnetic force between the first electromagnet and the second electromagnet, thereby expanding the magnetic force adjustment range between the first electromagnet and the second electromagnet, so that the electromagnetic mechanism can adapt to more drivers with different body characteristics, thereby improving its applicability.

[0040] 3. The information collection component of the vehicle first collects the height and weight of the driver, and inputs the height and weight of the driver into the electromagnetic mechanism. Then, when the height and weight of the driver match the preset crushing force, the electromagnetic mechanism adjusts the crushing force between the first steering shaft and the second steering shaft according to the characteristic information. When the vehicle collides, the detection component detects the displacement information of the first steering shaft, and inputs the displacement information of the first steering shaft into the controller. The controller matches the displacement information with the preset data, controls the current passing through the first electromagnet and the second electromagnet to increase, thereby increasing the magnetic force between the first electromagnet and the second electromagnet, and improving the crushing force between the first steering shaft and the second steering shaft, so as to further protect the safety of the driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to illustrate and explain the present application, and the present application is not limited to the specific implementation methods described below.

[0042] Figure 1 A schematic diagram of the structure of a steering column collapse energy absorption device provided in an embodiment of the present application;

[0043] Figure 2 for Figure 1 A structural diagram from another perspective;

[0044] Figure 3 for Figure 1 Schematic diagram of some internal structures;

[0045] Figure 4 for Figure 2 A schematic diagram of the structure from another perspective.

[0046] Description of reference numerals:

[0047] 100. A first steering axis;

[0048] 200, pipe column casing;

[0049] 300, second steering shaft;

[0050] 400, electromagnetic mechanism; 410, first electromagnet; 420, second electromagnet; 430, detection element;

[0051] 500. Retaining ring.

[0052] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiment of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. The embodiments of the present application are described in detail below in conjunction with the drawings.

[0054] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0056] In the description of the present application, “plurality” means two or more than two, unless otherwise precisely and specifically specified.

[0057] The terms "first", "second", "third", "fourth", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the implementation of the application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0058] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0059] The vehicle steering column is a component that connects the steering wheel and the steering gear. Through the steering column, the driver operates the steering wheel to transfer torque to the steering gear, which drives the steering gear to achieve vehicle steering. When a vehicle collision occurs, the driver will rush forward quickly under the action of inertia, and the chest of the human body will collide with the steering wheel. The steering column must be able to collapse to absorb the impact of the driver's collision and reduce the damage to the driver.

[0060] In the related art, the existing collapsing function of the steering column is achieved by pre-designing the crushing force. However, due to the complex internal structure of the steering column and comprehensive consideration of cost factors, the pre-designed crushing force is usually a fixed value. The steering column can collapse and deform according to the pre-designed crushing force, thereby protecting the driver from greater impact force.

[0061] However, the crushing force required for different body characteristics of drivers varies greatly. For example, a fatter driver usually has greater inertia and requires a greater crushing force; a thinner driver does not need a greater crushing force, and setting a greater crushing force will increase costs. In addition, the angle and circumference of the existing steering wheel can be adjusted, and the crushing force corresponding to different steering wheel positions should also be different. If the crushing force does not match the driver, there will be certain safety hazards to the driver.

[0062] Based on this, the embodiment of the present application provides a steering column crush energy absorption device and a vehicle, wherein the column crush energy absorption device comprises a first steering shaft, a column housing, a second steering shaft and an electromagnetic mechanism; the electromagnetic mechanism is arranged between the first steering shaft and the second steering shaft, and the electromagnetic mechanism is used to adjust the crushing force between the first steering shaft and the second steering shaft, so that the crushing force between the first steering shaft and the second steering shaft is adjustable, thereby adapting to the different crushing forces required by different drivers and different steering wheel positions. In this way, the problem that the fixed-value crushing force pre-designed for the existing steering column cannot meet the crushing force requirements of different body characteristics is solved.

[0063] Figure 1 A schematic diagram of the structure of a steering column collapse energy absorption device provided in an embodiment of the present application; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 for Figure 1 Schematic diagram of some internal structures; Figure 4 for Figure 2 Another structural diagram of the perspective of. It should be noted that, Figures 1 to 4 The schematic diagram of each component of the steering column crush energy absorption device is shown. The specific structure of the steering column crush energy absorption device and other components in the vehicle is not limited to Figures 1 to 4 of examples.

[0064] It should be noted that the present application provides a steering column crush energy absorption device, which can be used on various vehicles.

[0065] The present application is described in detail below with reference to the accompanying drawings and specific embodiments:

[0066] Reference Figures 1 to 4 As shown, a steering column collapse energy absorption device provided in an embodiment of the present application includes a first steering shaft 100 , a column protective shell 200 , a second steering shaft 300 and an electromagnetic mechanism 400 .

[0067] The first steering shaft 100 is used to connect with the steering wheel of the vehicle, and the second steering shaft 300 is used to connect with the steering system of the vehicle. The first steering shaft 100 is sleeved on the second steering shaft 300, and the first steering shaft 100 can move along the axial direction of the second steering shaft 300. The column guard 200 is connected to the first steering shaft 100.

[0068] The column guard 200 is used to be slidably connected to the vehicle frame to serve as a support for the first steering shaft 100 and protect the first steering shaft 100. At the same time, the column guard 200 is slidably connected to the frame to facilitate the steering wheel angle adjustment. The specific structure of the column guard 200 is not limited.

[0069] The electromagnetic mechanism 400 is disposed between the first steering shaft 100 and the second steering shaft 300 , and the electromagnetic mechanism 400 is used to adjust the crushing force between the first steering shaft 100 and the second steering shaft 300 .

[0070] In a possible implementation, the electromagnetic mechanism 400 includes a first electromagnet 410 , a second electromagnet 420 , and a controller (not shown in the drawings).

[0071] The first electromagnet 410 is disposed on the first steering shaft 100, and the second electromagnet 420 is disposed on the second steering shaft 300 and can be fixed relative to the second steering shaft 300. The opposite surfaces of the first electromagnet 410 and the second electromagnet 420 have the same polarity to provide mutually repelling magnetic forces.

[0072] At least one of the first electromagnet 410 and the second electromagnet 420 is electrically connected to the controller, and the controller controls the magnetic force of at least one of the first electromagnet 410 and the second electromagnet 420 to adjust the crushing force between the first steering shaft 100 and the second steering shaft 300 .

[0073] In the above embodiment, the electromagnetic mechanism 400 makes the crushing force between the first steering shaft 100 and the second steering shaft 300 adjustable, and adjusts different crushing forces suitable for the driver according to different body characteristics of the driver.

[0074] Different body characteristics correspond to different preset crushing force values. Therefore, when the electromagnetic mechanism 400 adjusts the crushing force, the controller adjusts the crushing force based on the different body characteristics of the driver and the preset crushing force that matches the body characteristics. For example, a driver with a heavier weight requires a larger preset crushing force. By controlling the current in the first electromagnet 410 or the second electromagnet 420, the magnitude of the mutually repulsive magnetic force between the first electromagnet 410 and the second electromagnet 420 is adjusted, and then the crushing force between the first steering shaft 100 and the second steering shaft 300 is adjusted.

[0075] It is understandable that when the driver is obese and weighs more, the inertia to which the driver is subjected is greater when the vehicle collides. The electromagnetic mechanism 400 can increase the crushing force to protect the driver's safety, thereby better solving the problem that the fixed-value crushing force pre-designed with the existing steering column cannot meet the crushing force requirements of different drivers with different body characteristics.

[0076] In a possible implementation manner, in order to enable the electromagnetic mechanism 400 to adapt to more drivers with different body characteristics and improve its applicability, the first electromagnet 410 and the second electromagnet 420 are both electrically connected to the controller.

[0077] Here, the controller can control the current in the first electromagnet 410 and the second electromagnet 420 at the same time, and can conveniently adjust the magnetic force between the first electromagnet 410 and the second electromagnet 420 at the same time, thereby expanding the magnetic force adjustment range between the first electromagnet 410 and the second electromagnet 420.

[0078] In addition, due to the characteristics of the magnetic field, when the first electromagnet 410 and the second electromagnet 420 are close to each other, the magnetic force between the first electromagnet 410 and the second electromagnet 420 will increase, giving the driver a better buffering force and further protecting the driver's safety.

[0079] In some possible implementations, the first electromagnet 410 is disposed at one end of the first steering shaft 100 facing the second steering shaft 300 .

[0080] The first electromagnet 410 is set at the end of the first steering shaft 100 toward the second steering shaft 300. When the first steering shaft 100 moves toward the second steering shaft 300, the first electromagnet 410 and the second electromagnet 420 can respond quickly. When the displacement of the first steering shaft 100 is large, it has the effect of not affecting the magnetic force between the first electromagnet 410 and the second electromagnet 420.

[0081] In a possible implementation, in order to make the force application process of the first electromagnet 410 and the second electromagnet 420 on the first steering shaft 100 and the second steering shaft 300 more uniform, the first electromagnet 410 and the second electromagnet 420 are both ring-shaped.

[0082] Here, when the annular first electromagnet 410 and the second electromagnet 420 provide a crushing force to the first steering shaft 100 and the second steering shaft 300, the crushing force applied to the first steering shaft 100 and the second steering shaft 300 is relatively uniform, thereby improving the movement stability of the first steering shaft 100 and the second steering shaft 300. At the same time, the annular first electromagnet 410 and the second electromagnet 420 are easy to install and fix.

[0083] In a possible implementation manner, the first electromagnet 410 and the first steering shaft 100 are in interference fit, and the second electromagnet 420 and the second steering shaft 300 are in interference fit.

[0084] In the above embodiment, the interference fit has a simple structure, good centering, high load-bearing capacity, can withstand impact loads, has little weakening of the strength of the first steering shaft 100 and the second steering shaft 300, and can improve the stability of the first electromagnet 410 and the second electromagnet 420.

[0085] In a possible implementation, since the displacement of the first steering shaft 100 cannot be too large, a retaining ring 500 is sleeved on the second steering shaft 300 , and the second electromagnet 420 is disposed between the retaining ring 500 and the first electromagnet 410 .

[0086] In the above embodiment, when the collision between the vehicles is more serious, the impact force on the driver is also greater, and the moving distance of the first steering shaft 100 toward the second steering shaft 300 is also greater. The retaining ring 500 can limit the displacement of the first steering shaft 100. When the displacement of the first steering shaft 100 is too large and the first electromagnet 410 or the second electromagnet 420 is squeezed and damaged, the retaining ring 500 can continue to block the movement of the first steering shaft 100 to avoid more serious safety accidents caused by the excessive displacement of the first steering shaft 100.

[0087] In a possible implementation manner, a detection member 430 is further included. The detection member 430 is disposed on the first steering shaft 100 , and the detection member 430 is electrically connected to the controller.

[0088] The detection member 430 is a displacement sensor, which has the characteristics of simple structure, large output signal, easy use and low price.

[0089] The detection member 430 is configured to detect the displacement of the first steering shaft 100 , and the controller adjusts the current passing through the first electromagnet 410 and the second electromagnet 420 according to the displacement to adjust the magnetic force between the first electromagnet 410 and the second electromagnet 420 .

[0090] In the above embodiment, a detection member 430 is additionally provided on the first steering shaft 100. When the first steering shaft 100 moves, it is understandable that the greater the displacement of the first steering shaft 100, the greater the collision force on the vehicle, and the greater the safety hazard to the driver. After the detection member 430 detects the displacement of the first steering shaft 100, the displacement information is transmitted to the controller. The controller matches the displacement information with the preset data. It is understandable that the controller can be built into an internal database, that is, a displacement value corresponds to a current size. This correspondence can be obtained based on preliminary tests and is common knowledge in this field. No excessive restrictions are made here. Then, the current passing through the first electromagnet 410 and the second electromagnet 420 is controlled to increase, thereby increasing the magnetic force between the first electromagnet 410 and the second electromagnet 420, and increasing the crushing force between the first steering shaft 100 and the second steering shaft 300, thereby further protecting the safety of the driver.

[0091] Reference Figures 1 to 4 As shown, in a possible implementation, an embodiment of the present application provides a vehicle, including a vehicle body and a steering column crush energy absorption device.

[0092] The vehicle body has an information collection component, which is electrically connected to the electromagnetic mechanism 400. The information collection component is used to collect characteristic information of the driver of the vehicle body, wherein the characteristic information includes the height and weight of the driver. The information collection component can be a camera, a pressure sensor or an infrared sensor, as long as it can detect the height and weight of the driver. The specific structure of the information collection component is not limited here.

[0093] In a possible implementation manner, the information collection component may also be used to collect the angle of the steering wheel and the axial position information of the steering wheel.

[0094] The steering column crush energy absorption device is used to be arranged in the cab of the vehicle body and connected to the steering wheel and the steering system. The electromagnetic mechanism 400 of the steering column crush energy absorption device adjusts the crush force between the first steering shaft 100 and the second steering shaft 300 when the characteristic information and the angle of the steering wheel and the axial position information of the steering wheel match the preset crush force. It can be understood that a different crush force is set corresponding to each different characteristic information and the angle of the steering wheel and the axial position information of the steering wheel, so as to adapt to more different drivers.

[0095] In the above embodiment, the vehicle's information acquisition component first collects the driver's height, weight, steering wheel angle and axial position information of the steering wheel, and inputs the above information into the electromagnetic mechanism 400. Then, when the above information matches the preset crushing force, the electromagnetic mechanism 400 adjusts the crushing force between the first steering shaft 100 and the second steering shaft 300 according to the driver's height, weight, steering wheel angle and axial position information of the steering wheel, so as to set different crushing forces for drivers with different body characteristics and steering wheel positions, thereby meeting the crushing force requirements of drivers with different body characteristics and steering wheel positions and improving the driver's safety.

[0096] In a possible implementation, when the vehicle body collides, the detection component 430 detects a displacement signal of the first steering shaft 100 .

[0097] The controller adjusts the magnitude of the current in the first electromagnet 410 and the second electromagnet 420 according to the characteristic information and the displacement signal and the matching preset crushing force curve.

[0098] Since the displacement of the first steering shaft 100 after a collision is continuous, different crushing force values ​​can be set according to different positions of the first steering shaft 100, so that multiple crushing force values ​​form a smooth crushing force curve. During the displacement of the first steering shaft 100, the crushing force can be adjusted according to the above-mentioned crushing force curve.

[0099] Here, the detection member 430 first detects the displacement information of the first steering shaft 100, and inputs the displacement information of the first steering shaft 100 into the controller. The controller matches the displacement information with the preset data, and controls the current between the first electromagnet 410 and the second electromagnet 420 to increase, thereby increasing the magnetic force between the first electromagnet 410 and the second electromagnet 420, and improving the crushing force between the first steering shaft 100 and the second steering shaft 300, thereby further protecting the safety of the driver.

[0100] It is understandable that the crushing force curves corresponding to the different body characteristics of the driver and the steering wheel angle and the steering wheel axial position information are different. For example, when different drivers drive a vehicle with the same steering wheel angle and steering wheel axial position, the crushing force curve of the driver with heavier weight at each position of the first steering axis 100 has a larger crushing force. This data is obtained by personnel in this field through preliminary tests and is not subject to excessive restrictions here.

[0101] The implementation principle of a steering column crush energy absorption device and a vehicle in an embodiment of the present application is as follows: the column crush energy absorption device includes a first steering shaft 100, a column housing 200, a second steering shaft 300 and an electromagnetic mechanism 400; the electromagnetic mechanism 400 is arranged between the first steering shaft 100 and the second steering shaft 300, and the electromagnetic mechanism 400 is used to adjust the crushing force between the first steering shaft 100 and the second steering shaft 300 by utilizing the principle that the same poles of the first electromagnet 410 and the second electromagnet 420 repel each other, so that the crushing force between the first steering shaft 100 and the second steering shaft 300 is adjustable, so as to adapt to the different crushing forces required by different drivers and different steering wheel positions. In this way, the problem that the fixed-value crushing force pre-designed for the existing steering column cannot meet the crushing force requirements of different body characteristics of different drivers is solved. After considering the specification and practicing the application disclosed here, those skilled in the art will easily think of other implementation schemes of the present application.

[0102] This application is intended to cover any variation, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application. The description and examples are to be regarded as exemplary only, and the true scope and spirit of the present application are indicated by the claims.

[0103] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A steering column collapse energy absorption device for a vehicle, characterized in that: The steering column collapse energy absorption device comprises a first steering shaft, a column protective shell, a second steering shaft and an electromagnetic mechanism; The first steering shaft is used to connect with the steering wheel of the vehicle, the second steering shaft is used to connect with the steering system of the vehicle, the first steering shaft is sleeved on the second steering shaft, the first steering shaft can move along the axial direction of the second steering shaft, the column guard is connected with the first steering shaft, and the column guard is used to be slidably connected with the frame of the vehicle; The electromagnetic mechanism is disposed between the first steering shaft and the second steering shaft, and is used to adjust a crushing force between the first steering shaft and the second steering shaft.

2. The steering column collapse energy absorption device according to claim 1, characterized in that: The electromagnetic mechanism comprises a first electromagnet, a second electromagnet and a controller; The first electromagnet is arranged on the first steering shaft, the second electromagnet is arranged on the second steering shaft, and the opposite surfaces of the first electromagnet and the second electromagnet have the same polarity; At least one of the first electromagnet and the second electromagnet is electrically connected to the controller, and the controller controls the magnetic force of at least one of the first electromagnet and the second electromagnet to adjust the crushing force between the first steering shaft and the second steering shaft.

3. The steering column collapse energy absorption device according to claim 2, characterized in that: The first electromagnet and the second electromagnet are both electrically connected to the controller.

4. The steering column collapse energy absorption device according to claim 2, characterized in that: The first electromagnet is disposed at one end of the first steering shaft facing the second steering shaft.

5. The steering column collapse energy absorption device according to claim 3, characterized in that: The first electromagnet and the second electromagnet are both ring-shaped.

6. The steering column collapse energy absorption device according to claim 5, characterized in that: The first electromagnet and the first steering shaft are in interference fit, and the second electromagnet and the second steering shaft are in interference fit.

7. The steering column collapse energy absorption device according to claim 5, characterized in that: A retaining ring is sleeved on the second steering shaft, and the second electromagnet is arranged between the retaining ring and the first electromagnet.

8. The steering column collapse energy absorption device according to any one of claims 2 to 7, characterized in that: It also includes a detection member, which is arranged on the first steering shaft and is electrically connected to the controller; The detection member is configured to detect a displacement of the first steering shaft, and the controller adjusts the magnitude of the current passing through the first electromagnet and the second electromagnet according to the displacement to adjust the magnitude of the magnetic force between the first electromagnet and the second electromagnet.

9. A vehicle, characterized in that: A vehicle body and a steering column crush energy absorption device according to any one of claims 1 to 8; The vehicle body has an information collection component, which is electrically connected to the electromagnetic mechanism, and is used to collect characteristic information of the driver of the vehicle body, wherein the characteristic information includes the height and weight of the driver; The steering column crush energy absorption device is used to be arranged in the driving cab of the vehicle body, and the electromagnetic mechanism of the steering column crush energy absorption device adjusts the crush force between the first steering shaft and the second steering shaft when the characteristic information matches the preset crush force.

10. The vehicle according to claim 9, characterized in that When the vehicle body collides, the detection element detects a displacement signal of the first steering shaft; The controller adjusts the magnitude of the current in the first electromagnet and the second electromagnet according to the characteristic information and the displacement signal and a matching preset crushing force curve.

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