CN103802786A - Magnetorheological-controlled safety belt - Google Patents
Magnetorheological-controlled safety belt Download PDFInfo
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- CN103802786A CN103802786A CN201210458516.1A CN201210458516A CN103802786A CN 103802786 A CN103802786 A CN 103802786A CN 201210458516 A CN201210458516 A CN 201210458516A CN 103802786 A CN103802786 A CN 103802786A
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- mandrel
- magnetorheological
- electric controller
- sensor
- ribbon
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Abstract
A magnetorheological-controlled safety belt comprises a lock catch, a lock tongue, a braid, a lock stopper, a sensor and an electric controller; the lock stopper comprises two end covers, a mandrel, a power supply power device and two magnetorheological controllers. The lock stopper is controlled by adopting magnetorheology, the braid mechanism performing rotary motion is intelligently controlled, and the rotary direction of the mandrel and the tension degree of the braid can be intelligently adjusted according to the vehicle speed change, so the pre-locking function of the braid is furthest provided theoretically, a human body is constrained on a seat in the first time, then the deceleration needed by the human body is controlled by controlling the braid to properly provide a constraining force according to the physiological limit capable of being borne by the human body. The magnetorheological-controlled safety belt is simple in mechanical structure, can be continuously controlled at proper time, can be repetitively used and is long in service life, the use cost of a user is greatly reduced, the occupation space is small, a control system is easy to integrate, the application range is wide, influences caused by the temperature are less, the manufacturing cost is low, and automation is easy to realize.
Description
Technical field
The present invention relates to a kind of auto parts and components, relate in particular to a kind of safety strap of magnetorheological control.
Background technology
Since safety strap is invented and used, the passive satety of automobile is played to vital effect, the mandatory regulation of wear safety belt when driving has nearly all been done by traffic department of various countries.The kind of on-vehicle safety band has at present: common safety strap, limit type safety strap, pre-tensioner limit type safety strap, the pre-pre-tensioner limit type safety strap of rolling.
The structure of these safety strap all adopts mechanical structure, and its triggering mode depends on the design value of physical construction, cannot carry out reasonably adjusting and setting according to concrete road conditions, concrete vehicle.And in the time there is safety strap effect of contraction, ribbon has the feature of delay working, causes the minimizing of living space, and its ribbon is uncontrollable to the constraint reaction of human body, cannot bear the limit according to the physiology of human body and carry out Based Intelligent Control, thereby ribbon itself is damaged human body.
Although the pre-tensioner limit type safety strap of more advanced pre-rolling adopts the mode of lighting the locking of gunpowder generation gas expansion to carry out pretension to safety strap, but after such mode of operation exists and uses, it is wanted, and tensioning limiter lockable mechanism lost efficacy and the replacing of having to, and disposable drawback makes user's use cost increase and the waste of resource.
Summary of the invention
Object of the present invention, in order to solve the problem of above-mentioned prior art existence, provides a kind of safety strap of magnetorheological control exactly.
In order to achieve the above object, the present invention has adopted following technical scheme: a kind of safety strap of magnetorheological control, comprise snap close, dead bolt and ribbon, and snap close is fixed in car on floor by connecting panel, one end of ribbon is fixed on the column of automobile, and centre is connected with dead bolt sliding sleeve; Also comprise mechanical brake, sensor, electric controller;
Described mechanical brake comprises two end caps, mandrel, two magnetorheological controllers and power supply engine installation, two end caps are fixed on by mechanical brake fixed frame on the column of automobile, the two ends of mandrel are rotatably connected with two end caps respectively, two magnetorheological controllers are connected on mandrel, and power supply engine installation is sleeved on mandrel and controls the rotation direction of mandrel; The other end of described ribbon is fixedly connected with and is wrapped on mandrel with the middle part of mandrel;
Described sensor comprises car body acceleration sensor, mandrel angular velocity sensor and tilting of car body angular velocity sensor, and car body acceleration sensor is arranged on car body; Mandrel angular velocity sensor is arranged in the end cap of mechanical brake and is connected with mandrel; Tilting of car body angular velocity sensor is arranged on car body; Each sensor is connected with electric controller electric signal respectively;
Described electric controller is arranged in mechanical brake fixed frame, and the input of electric controller connects the output of each sensor, and the output of electric controller connects respectively magnetorheological controller and power supply engine installation.
Described magnetorheological controller comprises housing, is arranged on stator and rotor in housing, and magnetic flow liquid between the stator and the rotor that fill, and the two ends of rotor shaft are connected with described mandrel respectively; In stator, be provided with energising excitation coil, the output of described electric controller is connected and provides electric power to energising excitation coil with energising excitation coil.
In two end caps of described mechanical brake, disc spring is housed respectively, disc spring one end is fixed in end cap, and the other end is fixedly connected with mandrel, and disc spring has predeformation when mounted, provides predetermincd tension by mandrel to ribbon.
It is chain that described snap close and dead bolt and described electric controller form switch, and when snap close is connected with dead bolt, electric controller starts, and when snap close and dead bolt depart from, electric controller is closed.
In described electric controller, be provided with control program, can be according to needed by human body ribbon constrained force programming Control power supply engine installation and magnetorheological controller.
Magnetic flow liquid is the aerosoles being mixed by the small soft magnetic particles of high magnetic permeability, low magnetic hysteresis and non-magnetic liquid.The distribution of particles of this aerosoles magnetic flow liquid under zero magnetic field condition is mixed and disorderly, presents low-viscosity Newtonian fluid characteristic; But under the effect in magnetic field, be but well-regulated and arrange along magnetic direction chaining or chain pencil, produced the feature of class solid, become difficult mobile plasticity Ben-Hur (Bingham) fluid of heavy body from the runny Newtonian fluid of little viscosity.Because magnetic flow liquid is moment, reversible in the rheology under magnetic fields, and shear yield strength and magnetic-field intensity after its rheology has stable corresponding relation.Therefore, can reach by the size of controlling magnetic field application force the object of the shear yield strength of controlling magnetic flow liquid, thereby the movable parts in magnetic flow liquid is produced to variable control torque, realize in good time, reversible continuous Torque Control.
Mechanical brake in the present invention adopts magnetorheological control, the ribbon mechanism of doing gyroscopic movement for Based Intelligent Control, can regulate intelligently the rotation direction of mandrel and the tensioning degree of ribbon according to the variation of the speed of a motor vehicle, can guarantee that on realization theory, offering to greatest extent ribbon wants locking function, in the very first time by human body " constraint " on seat, and then the physical endurance that can bear according to human body, makes ribbon appropriateness provide constrained force to control the deceleration/decel of needed by human body thereby reach control mandrel rotating speed by the electric current in the magnetorheological controller of electric controller control.
That the present invention can realize is real-time, continuous, reversible, control ribbon catch gear to low energy consumption, realizes Based Intelligent Control.It adopts intellectual material to realize the control of dumping force, controls magnetic circuit layout simple, and the large I of control torque is selected as required.
Physical construction of the present invention is simple, can control continuously in good time, can the Reusability life-span long, greatly reduces user's use cost, and institute takes up space little, and it is integrated that control system is easy to, applied range, and temperature influence is less, and low cost of manufacture easily is automated.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the safety strap of the magnetorheological control of the present invention;
Fig. 2 is the basic structure schematic diagram of the magnetorheological controller in the present invention.
The specific embodiment
Referring to Fig. 1, the safety strap of magnetorheological control of the present invention, comprises snap close 1, dead bolt 2, ribbon 3, mechanical brake 4, sensor 5, electric controller 6.Snap close 1 is wherein fixed in car on floor by connecting panel, and one end of ribbon 3 is fixed on the column of automobile, is middlely connected with dead bolt 2 sliding sleeves.
Mechanical brake 4 comprises two end caps 41, mandrel 42, two magnetorheological controllers 43, power supply engine installation 44, two end caps 41 are separately fixed at by mechanical brake fixed frame on the column of automobile, the two ends of mandrel 42 are rotatably connected with two end caps 41 respectively, two magnetorheological controllers 43 are connected on mandrel 42, power supply engine installation 44 is sleeved on mandrel 42, and the other end of ribbon 3 is fixedly connected with and is wrapped on mandrel with the middle part of mandrel 42.
Sensor 5 comprises car body acceleration sensor, mandrel angular velocity sensor and tilting of car body angular velocity sensor, car body acceleration sensor is arranged on car body, mandrel angular velocity sensor is arranged in the end cap 41 of mechanical brake and is connected with mandrel 42, tilting of car body angular velocity sensor is arranged on car body, and each sensor is connected with electric controller 6 electric signal respectively.
Electric controller 6 is arranged in mechanical brake fixed frame, and the input of electric controller connects the output of each sensor, and the output of electric controller connects respectively magnetorheological controller 43 and power supply engine installation 44.
Power supply engine installation 44 is arranged on mandrel, and the input of power supply actuating unit connects the output of electric controller, the power output connecting mandrel 42 of power supply engine installation.
The basic structure of the magnetorheological controller 43 in the present invention as shown in Figure 2, comprises housing 431, is arranged on stator 432 and rotor 433 in housing, and magnetic flow liquid 434 between the stator and the rotor that fill, and the two ends of rotor 433 axles are connected with mandrel 42 respectively; In stator 432, be provided with energising excitation coil 435, the output of electric controller 6 is connected and provides electric power to energising excitation coil with energising excitation coil 435.Shown in Fig. 2,436 is magnetic line of force, and 437 is bearing.
The interior disc spring (out not shown) that is equipped with respectively of two end caps 41 of the mechanical brake 4 in the present invention, disc spring one end is fixed in end cap, and the other end is fixedly connected with to mandrel predetermincd tension is provided with mandrel.
It is chain that snap close 1 in the present invention and dead bolt 2 and electric controller 6 form switch, and when snap close 1 is connected with dead bolt 2, electric controller starts, and when snap close 1 and dead bolt 2 depart from, electric controller is closed.
Principle of work of the present invention is:
1, when safety strap normally uses, pull dead bolt 2 to insert in snap close 1, start electric controller 6 by snap close.Sensor 5 comprises car body acceleration sensor, mandrel angle degree of adding sensor and tilting of car body angular velocity sensor.Mandrel angular acceleration and tilting of car body angle when these sensors can pull out car body acceleration, ribbon are at any time measured.When measurement value sensor is compared with the threshold value of setting, while not reaching certain numerical value, do not start power supply engine installation 44 and magnetorheological controller 43.
2, when safety belt emergent locking: sensor 5 observed readings exceed while setting threshold value, controlling power supply engine installation 44 by electric controller 6 drives mandrel 42 to rotate, it is consistent that the rotation direction that makes mandrel 42 and ribbon 3 tighten up direction, and electric controller 6 sends the torque and rotational speed of controlling electric current and control in good time magnetorheological controller rotor by control program simultaneously.Rotor 433 in magnetorheological controller 43 is fixedly connected with mandrel 42, therefore reaches the object of required control ribbon tensioning.In electric controller, there is control program, can control according to program the control parameter of power supply engine installation 44 and magnetorheological controller 43 in good time, make both cooperation, reach and control the rotation direction of mandrel, the object of torque and rotational speed, and then reach the object of controlling as required ribbon tensile force and elongation.
3, remove the use state of safety strap: press snap close 1 dead bolt 2 is extracted, can close electric controller 6, remove the use state of safety strap.
The principle of work of magnetorheological controller is:
In the cylindrical shell of stator 432, be wound around energising excitation coil 435, the magnetic line of force that produces of energising excitation coil 435 in the inside of stator along center steering axle, by the gap between stator and rotor and stator and rotor, perpendicular to stator and rotor radially, form even magnetic circuit.The magnetic field producing after excitation coil 435 energisings is by the gap between stator and rotor, make the magnetic-particle in the magnetic flow liquid 434 of gap location radially be arranged in " chain ", in the time that rotor rotates, the direction of its linear velocity is radially arranged in the direction of " chain " with magnetic-particle vertical, " chain " in magnetic flow liquid sheared, and the shear yield strength of magnetic flow liquid and magnetic induction density have corresponding relation, the size of magnetic induction density can be determined by the electric current in electric controller control excitation coil, so just can reach by the size of electric current in control coil the object of the shear yield strength of controlling magnetic flow liquid, thereby make magnetic flow liquid produce bidirectional variable control torque to rotor, realize in good time, reversible continuous Torque Control.
Claims (5)
1. a safety strap for magnetorheological control, comprises snap close, dead bolt and ribbon, and snap close is fixed in car on floor by connecting panel, and one end of ribbon is fixed on the column of automobile, is middlely connected with dead bolt sliding sleeve; It is characterized in that: also comprise mechanical brake, sensor, electric controller;
Described mechanical brake comprises two end caps, mandrel, two magnetorheological controllers and power supply engine installation, two end caps are fixed on by mechanical brake fixed frame on the column of automobile, the two ends of mandrel are rotatably connected with two end caps respectively, two magnetorheological controllers are connected on mandrel, and power supply engine installation is sleeved on mandrel and controls the rotation direction of mandrel; The other end of described ribbon is fixedly connected with and is wrapped on mandrel with the middle part of mandrel;
Described sensor comprises car body acceleration sensor, mandrel angular velocity sensor and tilting of car body angular velocity sensor, and car body acceleration sensor is arranged on car body; Mandrel angular velocity sensor is arranged in the end cap of mechanical brake and is connected with mandrel; Tilting of car body angular velocity sensor is arranged on car body; Each sensor is connected with electric controller electric signal respectively;
Described electric controller is arranged in mechanical brake fixed frame, and the input of electric controller connects the output of each sensor, and the output of electric controller connects respectively magnetorheological controller and power supply engine installation.
2. the safety strap of magnetorheological control according to claim 1, it is characterized in that: described magnetorheological controller comprises housing, is arranged on stator and rotor in housing, and magnetic flow liquid between the stator and the rotor that fill, the two ends of rotor shaft are connected with described mandrel respectively; In stator, be provided with energising excitation coil, the output of described electric controller is connected and provides electric power to energising excitation coil with energising excitation coil.
3. the safety strap of magnetorheological control according to claim 1, it is characterized in that: in two end caps of described mechanical brake, disc spring is housed respectively, disc spring one end is fixed in end cap, and the other end is fixedly connected with mandrel, disc spring has predeformation when mounted, provides predetermincd tension by mandrel to ribbon.
4. the safety strap of magnetorheological control according to claim 1, is characterized in that: it is chain that described snap close and dead bolt and described electric controller form switch, and when snap close is connected with dead bolt, electric controller starts, and when snap close and dead bolt depart from, electric controller is closed.
5. the safety strap of magnetorheological control according to claim 1, is characterized in that: in described electric controller, be provided with control program, and can be according to needed by human body ribbon constrained force programming Control power supply engine installation and magnetorheological controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210458516.1A CN103802786A (en) | 2012-11-14 | 2012-11-14 | Magnetorheological-controlled safety belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210458516.1A CN103802786A (en) | 2012-11-14 | 2012-11-14 | Magnetorheological-controlled safety belt |
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| Publication Number | Publication Date |
|---|---|
| CN103802786A true CN103802786A (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210458516.1A Pending CN103802786A (en) | 2012-11-14 | 2012-11-14 | Magnetorheological-controlled safety belt |
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| CN (1) | CN103802786A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105292047A (en) * | 2015-10-12 | 2016-02-03 | 上海工程技术大学 | Safety belt controlled by magneto-rheological load limiter |
| CN110217190A (en) * | 2019-06-20 | 2019-09-10 | 浙江吉利控股集团有限公司 | A kind of safety belt force limit system of automatic adaptation passenger type |
| CN112882252A (en) * | 2021-01-22 | 2021-06-01 | 维沃移动通信有限公司 | Wearable device, control method and control device of wearable device |
Citations (8)
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|---|---|---|---|---|
| US4815674A (en) * | 1987-12-21 | 1989-03-28 | General Motors Corporation | Retractor with electro-rheological lock |
| DE20118257U1 (en) * | 2001-11-09 | 2002-03-21 | TRW Occupant Restraint Systems GmbH & Co. KG, 73553 Alfdorf | Seat belt retractor for vehicle seat belts |
| US6655743B1 (en) * | 2002-04-11 | 2003-12-02 | Island Pyrochemical Industries Corp. | Electronically controlled seat belt module |
| US6705559B1 (en) * | 1999-06-14 | 2004-03-16 | Ford Global Technologies, Llc | Programmable seat belt damper assembly |
| KR100537454B1 (en) * | 2004-07-05 | 2005-12-19 | 인하대학교 산학협력단 | A shock-absorbing apparatus of safety belt for a vehicle |
| DE102005011826A1 (en) * | 2005-03-15 | 2006-09-21 | Volkswagen Ag | Damper for vehicle e.g. security device for motor vehicle has damper element which consists of fluid particularly electro or magneto-rheological, whose fluid viscosity is changeable by adjustment or adaptation of damping action |
| CN1874916A (en) * | 2003-10-28 | 2006-12-06 | 奥托利夫开发有限公司 | Buckle switch and buckle device |
| DE102010024420A1 (en) * | 2010-06-19 | 2011-02-03 | Daimler Ag | Seat belt for vehicle, has wheel provided with shaping part on extent surface, where shaping part is immersed into electro or magneto-rheological liquid in blocking device that restrains and/or completely blocks rotating motion of belt drum |
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2012
- 2012-11-14 CN CN201210458516.1A patent/CN103802786A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815674A (en) * | 1987-12-21 | 1989-03-28 | General Motors Corporation | Retractor with electro-rheological lock |
| US6705559B1 (en) * | 1999-06-14 | 2004-03-16 | Ford Global Technologies, Llc | Programmable seat belt damper assembly |
| DE20118257U1 (en) * | 2001-11-09 | 2002-03-21 | TRW Occupant Restraint Systems GmbH & Co. KG, 73553 Alfdorf | Seat belt retractor for vehicle seat belts |
| US6655743B1 (en) * | 2002-04-11 | 2003-12-02 | Island Pyrochemical Industries Corp. | Electronically controlled seat belt module |
| CN1874916A (en) * | 2003-10-28 | 2006-12-06 | 奥托利夫开发有限公司 | Buckle switch and buckle device |
| KR100537454B1 (en) * | 2004-07-05 | 2005-12-19 | 인하대학교 산학협력단 | A shock-absorbing apparatus of safety belt for a vehicle |
| DE102005011826A1 (en) * | 2005-03-15 | 2006-09-21 | Volkswagen Ag | Damper for vehicle e.g. security device for motor vehicle has damper element which consists of fluid particularly electro or magneto-rheological, whose fluid viscosity is changeable by adjustment or adaptation of damping action |
| DE102010024420A1 (en) * | 2010-06-19 | 2011-02-03 | Daimler Ag | Seat belt for vehicle, has wheel provided with shaping part on extent surface, where shaping part is immersed into electro or magneto-rheological liquid in blocking device that restrains and/or completely blocks rotating motion of belt drum |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105292047A (en) * | 2015-10-12 | 2016-02-03 | 上海工程技术大学 | Safety belt controlled by magneto-rheological load limiter |
| CN110217190A (en) * | 2019-06-20 | 2019-09-10 | 浙江吉利控股集团有限公司 | A kind of safety belt force limit system of automatic adaptation passenger type |
| CN112882252A (en) * | 2021-01-22 | 2021-06-01 | 维沃移动通信有限公司 | Wearable device, control method and control device of wearable device |
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Application publication date: 20140521 |