CN111532336A - Automobile steering column buffer system and automobile thereof - Google Patents

Automobile steering column buffer system and automobile thereof Download PDF

Info

Publication number
CN111532336A
CN111532336A CN202010383487.1A CN202010383487A CN111532336A CN 111532336 A CN111532336 A CN 111532336A CN 202010383487 A CN202010383487 A CN 202010383487A CN 111532336 A CN111532336 A CN 111532336A
Authority
CN
China
Prior art keywords
steering column
magnetorheological fluid
automobile
buffer
mounting hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202010383487.1A
Other languages
Chinese (zh)
Inventor
胡旭
艾存金
龙婵娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangyou Chuanyi Precision Machinery Co ltd
Chongqing University of Arts and Sciences
Original Assignee
Jiangyou Chuanyi Precision Machinery Co ltd
Chongqing University of Arts and Sciences
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangyou Chuanyi Precision Machinery Co ltd, Chongqing University of Arts and Sciences filed Critical Jiangyou Chuanyi Precision Machinery Co ltd
Priority to CN202010383487.1A priority Critical patent/CN111532336A/en
Publication of CN111532336A publication Critical patent/CN111532336A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
    • B62D1/192—Yieldable or collapsible columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Controls (AREA)

Abstract

The invention discloses an automobile steering column buffer system and an automobile thereof, wherein the buffer system comprises a steering column and a steering column pipe, two ends of the steering column are respectively in transmission connection with a steering wheel and a rotator, the middle section of the steering column is rotatably sleeved in the steering column pipe through a mounting bearing, the inner wall in the middle of the steering column pipe is provided with an elastic limiting mechanism for axially limiting the mounting bearing, and the lower section of the steering column is also provided with a damping buffer mechanism for damping and buffering the mounting bearing which slides downwards axially; the limiting and the buffering are relatively independent, the buffering efficiency is effectively improved, the safety performance of resisting accidents is greatly improved, the safety of a driver is guaranteed, and the buffer can be repeatedly used; the damping buffer mechanism is provided with the magnetorheological fluid buffer mechanism, and the controller controls the magnetorheological fluid buffer mechanism to buffer adaptively through real-time impulse, so that the buffering efficiency is greatly improved, and the driving safety is further improved.

Description

Automobile steering column buffer system and automobile thereof
Technical Field
The invention relates to the field of automobile safety, in particular to an automobile steering column buffer system and an automobile thereof.
Background
The steering shaft is a transmission member for connecting the steering wheel and the steering gear, the steering column tube is fixed on the vehicle body, and the steering shaft passes through the steering column tube and is supported on a bearing and a bush in the column tube. In addition to the requirement for a motor vehicle equipped with an energy-absorbing steering wheel, the steering column must be equipped with an energy-absorbing device that can absorb shocks. The basic working principle of the steering shaft and steering column tube energy absorption device is as follows: when the steering shaft is subjected to huge impact to generate axial displacement, impact energy is absorbed in a mode that the steering column tube or the bracket generates plastic deformation, the steering shaft generates dislocation and the like.
The existing impact energy absorption methods mainly comprise three types: 1. buffering the dislocation of the steering shaft; 2. the working principle of the energy absorption device for the steering column tube of the automobile is as follows: when collision happens, the steering gear moves backwards, the lower steering transmission shaft is inserted into the hole of the upper steering transmission shaft, and the upper steering transmission shaft is flattened to absorb impact energy. Further, the steering column tube is fixed to the instrument panel by a bracket and a U-shaped metal plate. When the driver's body hits the steering wheel, the steering column and the bracket are disengaged from the instrument panel and move forward. At this time, the U-shaped metal plate having one end fixed to the instrument panel and the other end fixed to the bracket is distorted and deformed and absorbs the impact energy. 3. The steering column tube deforms to absorb impact energy and buffer the impact energy, and if a latticed or corrugated tube type steering column tube energy absorption device is arranged on an automobile, when a violent collision occurs to cause a human body to collide with a steering wheel, a latticed part or a corrugated tube part is compressed to generate plastic deformation to absorb the impact energy. The buffering system in the mode is low in buffering efficiency, poor in safety and incapable of being used repeatedly.
Disclosure of Invention
In view of this, the present invention aims to overcome the defects in the prior art, and provides an automobile steering column buffer system and an automobile thereof, which can effectively improve the buffer efficiency, greatly improve the safety performance against accidents, ensure the safety of drivers, and can be reused.
The invention discloses an automobile steering column buffer system, which comprises a steering column and a steering column pipe, wherein two ends of the steering column are respectively in transmission connection with a steering wheel and a rotator, the middle section of the steering column is rotatably sleeved in the steering column pipe through a mounting bearing, an elastic limiting mechanism for axially limiting the mounting bearing is arranged on the inner wall in the middle of the steering column pipe, and a damping buffer mechanism for damping and buffering the mounting bearing which axially slides downwards is also arranged on the lower section of the steering column.
Further, the damping buffer mechanism is a magneto-rheological buffer mechanism, and further comprises a controller and a pressure sensor, wherein the pressure sensor is arranged below the driver seat cushion and used for detecting the upper half body weight of a driver, the input end of the controller is respectively electrically connected with the output end of the pressure sensor and the output end of an automobile speedometer, the output end of the controller is electrically connected with the input end of the magneto-rheological buffer mechanism, and the controller calculates the upper half body real-time impulse of the driver according to the upper half body weight of the driver detected by the pressure sensor and the real-time speed detected by the automobile speedometer and controls the magneto-rheological buffer mechanism according to the real-time impulse.
Furthermore, elasticity stop gear is including radially offering in the mounting hole of steering column pipe inside wall and installing the spacing subassembly of elasticity in the mounting hole, the spacing subassembly of elasticity includes the spacing ball that is located the mounting hole inner, the end cap of fixed mounting hole outer end and the column spring of bullet top between spacing ball and end cap, the inner port radius of mounting hole is less than the radius of spacing ball, spacing ball part exposes in the mounting hole and spacing ball exposes the part and is used for forming axial spacing to the installation bearing.
Furthermore, the plug is sleeved in the outer end opening of the mounting hole through a thread.
Furthermore, the mounting holes and the elastic limiting assemblies are multiple groups and are respectively and uniformly distributed along the circumferential direction of the inner circle of the steering column tube.
Furthermore, the inner circle of the steering column tube is recessed to form a guide groove located on the lower side of the elastic limiting mechanism, the magnetorheological buffer mechanism comprises a stop ring, a piston rod, a piston, a magnetorheological fluid piston cavity, a magnetorheological fluid overflow cavity and an excitation coil, the stop ring is located below the elastic limiting mechanism, the outer circle of the stop ring extends outwards in the radial direction to form a piston rod mounting seat which is embedded into the guide groove in a shape-fitting manner, the upper end of the piston rod is fixed on the bottom surface of the piston rod mounting seat, the piston is sleeved in the magnetorheological fluid piston cavity in a sliding manner and is fixedly connected with the lower end of the piston rod, the magnetorheological fluid overflow cavity is communicated with the bottom of the magnetorheological fluid piston cavity through a thin channel, and the excitation coil is fixedly arranged along the circumferential direction of the steering column tube and generates an excitation magnetic field for the magnetorheological fluid.
Furthermore, the guide grooves and the piston rod mounting seats are multiple and are uniformly distributed along the circumferential direction of the steering column pipe.
Furthermore, the guide groove and the piston rod mounting seat are six.
Furthermore, the magnetorheological fluid piston cavity and the magnetorheological fluid overflow cavity are all cylindrical cavities which are parallel along the circumferential direction of the steering column pipe.
The invention also discloses an automobile, wherein the steering column of the automobile is provided with a buffer system, and the buffer system is the automobile steering column buffer system.
The invention has the beneficial effects that: according to the automobile steering column buffer system and the automobile thereof, the limiting and the buffering are relatively independent, the buffering efficiency is effectively improved, the safety performance of resisting accidents is greatly improved, the safety of a driver is guaranteed, and the automobile steering column buffer system can be repeatedly used; the damping buffer mechanism is provided with the magnetorheological fluid buffer mechanism, and the controller controls the magnetorheological fluid buffer mechanism to buffer adaptively through real-time impulse, so that the buffering efficiency is greatly improved, and the driving safety is further improved.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a steering column tube according to the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic view of a blocker ring according to the present invention;
FIG. 5 is a schematic view of the magnetorheological fluid piston chamber and the magnetorheological fluid surplus chamber of the present invention.
Detailed Description
FIG. 1 is a schematic structural view of the present invention; FIG. 2 is a schematic view of a steering column tube according to the present invention; FIG. 3 is a sectional view taken along line A-A of FIG. 2; FIG. 4 is a schematic view of a blocker ring according to the present invention; fig. 5 is a schematic structural view of a magnetorheological fluid piston cavity and a magnetorheological fluid overflow cavity in the present invention, and as shown in the figure, the automobile steering column buffer system in this embodiment includes a steering column 1 and a steering column tube 2, two ends of the steering column are respectively connected with a steering wheel and a rotator in a transmission manner, the middle section of the steering column is rotatably sleeved in the steering column tube 2 through a mounting bearing, an elastic limiting mechanism for axially limiting the mounting bearing is arranged on the inner wall in the middle of the steering column tube 2, and a damping buffer mechanism for damping and buffering the mounting bearing which axially slides down is further arranged on the lower section of the steering column; the mounting bearing can be a ball bearing, the inner ring of the ball bearing is fixed on the outer circle of the steering column, the outer ring 3 of the roll-on bearing can be sleeved on the inner circle of the steering column tube 2 in a circumferentially fixed and axially sliding mode, all the existing structures in the prior art can be adopted in the circumferentially fixed mode of the outer ring 3, the repeated description is omitted, the mounting bearing is elastically limited along the axial direction by arranging an elastic limiting mechanism, so that the axial sliding driving force of the steering column has a set threshold value, meanwhile, a damping buffer mechanism is arranged at the lower end of the elastic limiting mechanism, the unlocked steering column is further damped and buffered in time, the limitation and the buffering are relatively independent, the buffering efficiency is effectively improved, the safety performance of resisting accidents is greatly improved, the safety of a driver is guaranteed, and the mounting bearing can be repeatedly used; the axial direction indicates the axial direction of the steering column, and the circumferential direction indicates the circumferential direction of the steering column.
In this embodiment, the damping buffer mechanism is a magnetorheological buffer mechanism, and further includes a controller 4 and a pressure sensor 5, the pressure sensor 5 is disposed below the driver seat cushion and used for detecting the weight of the upper body of the driver, an input end of the controller 4 is electrically connected with an output end of the pressure sensor 5 and an output end of an automobile speedometer respectively, an output end of the controller 4 is electrically connected with an input end of the magnetorheological buffer mechanism, the controller 4 calculates the real-time impulse of the upper body of the driver according to the weight of the upper body of the driver detected by the pressure sensor 5 and the real-time speed detected by the automobile speedometer, and controls the magnetorheological buffer mechanism according to the real-time impulse; the controller 4 can be an existing single chip microcomputer and an existing control program is stored in the controller, the damping buffer mechanism is provided with the magnetorheological fluid buffer mechanism, and the controller 4 controls the magnetorheological fluid buffer mechanism to buffer adaptively through real-time impulse, so that the buffering efficiency is greatly improved, and the driving safety is further improved.
In the embodiment, the elastic limiting mechanism comprises a mounting hole 6 which is radially formed in the inner side wall of the steering column tube 2 and an elastic limiting assembly which is mounted in the mounting hole 6, the elastic limiting assembly comprises a limiting ball 7 which is positioned at the inner end of the mounting hole 6, a plug 8 which is used for fixing the outer end of the mounting hole 6 and a cylindrical spring 9 which is elastically propped between the limiting ball 7 and the plug 8, the radius of an inner port of the mounting hole 6 is smaller than that of the limiting ball 7, part of the limiting ball 7 is exposed out of the mounting hole 6, and the exposed part of the limiting ball 7 is used for forming axial limiting on the mounting bearing; the plug 8 is internally sleeved at the outer end opening of the mounting hole 6 through threads; the elastic limiting mechanism is simple in structure, convenient to process and good in application effect.
In this embodiment, the mounting holes 6 and the elastic limiting assemblies are in multiple groups and are respectively and uniformly distributed along the circumferential direction of the inner circle of the steering column tube 2.
In the embodiment, the inner circle of the steering column tube 2 is sunken to form a guide groove 10 positioned at the lower side of the elastic limiting mechanism, the magneto-rheological buffer mechanism comprises a stop ring 11, a piston rod 12, a piston 13, a magneto-rheological fluid piston cavity 14, a magneto-rheological fluid overflow cavity 15 and an excitation coil 16, the stop ring 11 is positioned below the elastic limiting mechanism, the excircle of the stop ring 11 extends outwards along the radial direction to form a piston rod mounting seat 17 which is embedded into the guide groove 10 in a form-fitting manner, the upper end of the piston rod 12 is fixed on the bottom surface of the piston rod mounting seat 17, the piston is slidably sleeved in the magnetorheological fluid piston cavity 14 and is fixedly connected with the lower end of the piston rod 12, the magnetorheological fluid overflow cavity 15 is communicated with the bottom of the magnetorheological fluid piston cavity 14 through a thin channel 18, the excitation coil 16 is fixedly arranged along the circumferential direction of the steering column tube 2 and generates an excitation magnetic field for the magnetorheological fluid in the magnetorheological fluid piston cavity 14 and the magnetorheological fluid overflow cavity 15; the guide grooves 10 and the piston rod mounting seats 17 are multiple and are uniformly distributed along the circumferential direction of the steering column tube 2; six guide grooves 10 and six piston rod mounting seats 17 are arranged; the working process of the magnetorheological buffer mechanism is as follows: the outer ring of the mounting bearing moves downwards and presses the stop ring 11 to enable the stop ring 11 to move downwards, and then the driving piston moves downwards, so that magnetorheological fluid in the magnetorheological fluid piston cavity 14 flows to the magnetorheological fluid overflow cavity 15 through the thin channel 18, the controller 4 controls the current of the magnet exciting coil 16 and further controls the viscosity of the magnetorheological fluid, damping force variable buffering is achieved, namely when the impulse of a driver is large, the damping force is large, when the impulse of the driver is small, the damping is small, effective buffering is guaranteed, and the magnetorheological fluid buffering system is arranged in the steering column tube 2.
In this embodiment, the magnetorheological fluid piston cavity 14 and the magnetorheological fluid overflow cavity 15 are both cylindrical cavities which are parallel to each other along the circumferential direction of the steering column tube 2, and as shown in the figure, the magnetorheological fluid piston cavity 14 and the magnetorheological fluid overflow cavity 15 are convenient to process due to the structure.
The invention also discloses an automobile, a steering column of the automobile is provided with a buffer system, the buffer system is the automobile steering column buffer system,
finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (10)

1. An automobile steering column buffer system, characterized in that: including steering column and steering column pipe, the both ends of steering column are connected with steering wheel and rotor transmission respectively, the steering column middle section rotates the endotheca through the installation bearing in the steering column intraductally, the inner wall is provided with and is used for right in the middle of the steering column pipe installation bearing axial spacing elasticity stop gear, the hypomere of steering column still is provided with and is used for playing the damping buffer gear of damping buffering to the installation bearing of axial gliding.
2. The vehicle steering column cushion system according to claim 1, wherein: the damping buffer mechanism is a magneto-rheological buffer mechanism and further comprises a controller and a pressure sensor, the pressure sensor is arranged below the driver seat cushion and used for detecting the upper half body weight of a driver, the input end of the controller is electrically connected with the output end of the pressure sensor and the output end of an automobile speedometer respectively, the output end of the controller is electrically connected with the input end of the magneto-rheological buffer mechanism, the controller calculates the upper half body real-time impulse of the driver according to the upper half body weight of the driver detected by the pressure sensor and the real-time speed detected by the automobile speedometer, and controls the magneto-rheological buffer mechanism according to the real-time impulse.
3. The vehicle steering column cushion system according to claim 2, wherein: the elastic limiting mechanism comprises a mounting hole and an elastic limiting assembly, the mounting hole is radially formed in the inner side wall of the steering column tube, the elastic limiting assembly is mounted in the mounting hole, the elastic limiting assembly comprises a limiting ball positioned at the inner end of the mounting hole, a plug for fixing the outer end of the mounting hole and a cylindrical spring which is elastically ejected between the limiting ball and the plug, the radius of an inner port of the mounting hole is smaller than that of the limiting ball, and the limiting ball is partially exposed out of the mounting hole and is used for forming axial limiting on a mounting bearing.
4. The vehicle steering column cushion system according to claim 1, wherein: the plug is sleeved in the outer end opening of the mounting hole through the thread.
5. The vehicle steering column cushion system according to claim 3, wherein: the mounting holes and the elastic limiting assemblies are multiple groups and are uniformly distributed along the circumferential direction of the inner circle of the steering column tube respectively.
6. The vehicle steering column cushion system according to claim 2, wherein: the magnetorheological buffer mechanism comprises a stop ring, a piston rod, a piston, a magnetorheological fluid piston cavity, a magnetorheological fluid overflow cavity and an excitation coil, the stop ring is positioned below the elastic limiting mechanism, the outer circle of the stop ring extends outwards in the radial direction to form a piston rod mounting seat which is embedded into the guide groove in a shape fitting manner, the upper end of the piston rod is fixed on the bottom surface of the piston rod mounting seat, the piston is sleeved in the magnetorheological fluid piston cavity in a sliding manner and is fixedly connected with the lower end of the piston rod, the magnetorheological fluid overflow cavity is communicated with the bottom of the magnetorheological fluid piston cavity through a thin channel, and the excitation coil is fixedly arranged along the circumferential direction of the steering column pipe and generates an excitation magnetic field for the magnetorheological fluid positioned in the magnetorheological fluid piston cavity and the magnetorheological fluid overflow cavity.
7. The vehicle steering column cushion system according to claim 6, wherein: the guide grooves and the piston rod mounting seats are multiple and are uniformly distributed along the circumferential direction of the steering column pipe.
8. The vehicle steering column cushion system according to claim 7, wherein: the guide groove and the piston rod mounting seat are six.
9. The vehicle steering column cushion system according to claim 8, wherein: the magnetorheological fluid piston cavity and the magnetorheological fluid overflow cavity are all cylindrical cavities which are parallel along the circumferential direction of the steering column pipe.
10. An automobile, the steering column of automobile is provided with buffer system, its characterized in that: the bumper system is a steering column bumper system for an automobile as claimed in any one of claims 1 to 9.
CN202010383487.1A 2020-05-08 2020-05-08 Automobile steering column buffer system and automobile thereof Withdrawn CN111532336A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010383487.1A CN111532336A (en) 2020-05-08 2020-05-08 Automobile steering column buffer system and automobile thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010383487.1A CN111532336A (en) 2020-05-08 2020-05-08 Automobile steering column buffer system and automobile thereof

Publications (1)

Publication Number Publication Date
CN111532336A true CN111532336A (en) 2020-08-14

Family

ID=71971771

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010383487.1A Withdrawn CN111532336A (en) 2020-05-08 2020-05-08 Automobile steering column buffer system and automobile thereof

Country Status (1)

Country Link
CN (1) CN111532336A (en)

Similar Documents

Publication Publication Date Title
JP5793186B2 (en) Preloaded double spring assembly
EP2060417A1 (en) Suspension device
US4641872A (en) Collision damper having a damping piston and a deformable tube connected thereto
CN203114998U (en) Damping-adjustable inflatable absorber
US6179356B1 (en) Impact damper for a motor vehicle and method of making same
CN101725658A (en) Dead load, dynamic pulse and stretching speed self-adaptive resistance variation method and damper
CN111532336A (en) Automobile steering column buffer system and automobile thereof
US3396599A (en) Steering column for vehicles
EP2494233B1 (en) Spring stiffness and pretension adjusting system
KR102383252B1 (en) Insulator divice of shock absorber
CN210397676U (en) Elastic damping bush structure, manual gear shifting control mechanism and vehicle
KR100445989B1 (en) A damper systems for use in controlling vehicle height by using a motor
CN210882337U (en) Vibration/noise reduction structure of automobile electric tail gate supporting rod
CN215904272U (en) Automotive suspension damping device with grading damping function
CN211525410U (en) Follow-on automobile shock absorber ware
CN111336208B (en) Magneto-rheological damper convenient to install
CN209892679U (en) Electrically-controlled remote stepless adjustable damping mechanism for shock absorber
CN113547886B (en) Vibration damper for automobile suspension
CN219096639U (en) Kart buffer stop
KR20080008906A (en) Impact absorption structure of steering coloumn for a vehicle
CN219623136U (en) Mechanical damping adjustable shock absorber
KR20020045772A (en) Stopper device of shock absorber
CN221162073U (en) Shock absorber assembly and suspension system of vehicle and vehicle
CN216478641U (en) Shock absorber valve system with frequency response characteristic
JPH11117983A (en) Front fork

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20200814