CN1579859A

CN1579859A - Automobile steering control system combination mode and apparatus thereof

Info

Publication number: CN1579859A
Application number: CN 200410044491
Authority: CN
Inventors: 刘二锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-15
Filing date: 2004-05-15
Publication date: 2005-02-16

Abstract

The invention discloses a direction controlling system which is composed by current automobile direction controlling system, it can be used to all kinds of automobile which run with wheel and are controlled by wheel to turning, the main problems the invention solved are: Firstly, the turning radius is too big, and the automobile body is not flexible enough. Secondly, the shake avoiding character of the direction controlling system is not so good. Thirdly, the turning power is not enough, when the automobile is on a certain speed, the balance character is not so good. The main character of the invention is: the front-wheel and the trailing wheel control the driving direction together, when the automobile turning, the turning direction of the front-wheel and the trailing wheel are on the contrary, in additional, a splint assistant turning return equipment is fixed on the trailing wheel, the equipment is composed by two steel chips , hooked in by spring, clasping two bearings. The invention is used to control the driving direction of the automobile.

Description

Motor turning control system array mode and device thereof

Technical field: the present invention is combined by existing automobile steering control system for a kind of, and is used for the heading control loop that Control of Automobile turns to, and is applied to use wheel to travel and realizes all kinds of automobiles that it turns to by the control to wheel.

Background technology: the heading control loop on the automobile of prior art can be divided into two kinds on mode: the heading control loop of first kind of mode mainly is to realize the automobile purpose that turns under steam by the control to vehicle front, and this mode is comparatively general.The heading control loop of the second way mainly is to realize the purpose that automobile turns under steam by the control to automobile back wheel, the heading control loop of this mode is more rare, it only is used on some special purpose vehicle, as Xinjiang-2 combination machine is exactly by controlling the purpose that its trailing wheel realizes that vehicle body turns under steam under steam, because the heading control loop of this mode is more rare, and, therefore here be described in detail with regard to unnecessary to there not being very big help when the formation of the main system architecture of analysis and understanding the present invention.Here just in order to illustrate that the overview of prior art is just done some concise and to the point promptings.

Below I am inciting somebody to action the heading control loop that retells first kind of mode of the prior art, promptly realize that by control automobile turns to the heading control loop of purpose under steam to vehicle front, " Chinese and foreign car chassis repairing technology " book that the main background data all has drawn from and published by Hunan China science tech publishing house is write people Tang Yi.Automobile steering control system in first kind of mode making motor turning by the Control of Automobile front-wheel can be divided into two big classes from keystone configuration again: the heading control loop of first kind structure mainly is to be that critical part constitutes with the ball-and-worm steering system, its keystone configuration and principle of work are as follows: ball-and-worm steering system is controlled by bearing circle, is equipped with in ball-and-worm steering system inside: Steering gear (worm screw), square nut, quadrant gear and axle, pitman arm.Be with square nut on the worm screw below the Steering gear, in the square nut for reducing friction and many steel balls are equipped with in wearing and tearing, the lower plane of square nut is made tooth bar and quadrant gear engagement, pitman arm is housed on the sector shaft, pitman arm is connected with steering track rod again, and steering track rod is again by spindle arm control wheel steering.During work, elder generation's steering wheel rotation, bearing circle rotates worm screw through Steering gear, square nut on the worm screw just axially moves under the rotation of worm screw thereupon, and the drive quadrant gear rotates, pitman arm on the sector shaft is shaken, and pitman arm drives steering track rod again and moves, and steering track rod moves the rocking arm that is contained on the steering swivel again and makes wheel steering.Physical resource derives from: Hunan China science tech publishing house publishes, " Chinese and foreign car chassis repairing technology " book that Tang Yi writes, first in the book selected from above literal: the 4th joint of physical construction: control system---steering hardware it (): the structure of steering hardware: go up page or leaf for the 92nd page; Segment word and (three) in first and second paragragh: the 93rd page of deflector second page or leaf is to 94 pages.

Specifically introduce the heading control loop of second class formation below again, the heading control loop of second class formation mainly is to be that critical part constitutes with the rack and pinion steering gear, its keystone configuration and principle of work are as follows: rack and pinion steering gear is simple in structure, easily manufactured is its characteristics, it is meshed at the tooth bar that turns to the tip of the axis that helical spur gear (or miniature gears) is arranged and to be contained in the shell, shell is fixed on the vehicle frame, when steering wheel rotation, miniature gears direct control tooth bar, tooth bar directly drives two intermediate rods that separate by two bulbs and moves, without spindle arm, make about wheel to turn to, have and install steering booster additional.Physical resource derives from: Hunan China science tech publishing house publishes, " Chinese and foreign car chassis repairing technology " book that Tang Yi writes, first in the book selected from above literal: the 4th joint of physical construction: control system---steering hardware they (three): the 95th page of second page or leaf in the deflector.In the structure of some heading control loops, also used hydraulic efficiency gear to control wheel steering in addition, heading control loop such as Xinjiang-2 combination machine is exactly to be that critical part constitutes with the hydraulic efficiency gear, when turning to, after oil pump comes oil to enter the all-hydraulic steering gear of being controlled by bearing circle, all-hydraulic steering gear is gone into fluid-link steering oil cylinder chamber, a left side or right chamber through the control of bearing circle with quantitative oil pressure, makes the fluid-link steering oil cylinder directly push away (drawing) moving spindle arm and makes wheel steering.The heading control loop of this structure is more rare.Here because the heading control loop of various structures is more various, but it is total with regard to its mode, wherein a kind of who is two kinds of modes mentioning with background technology beginning serve as the basis formation, again because the present invention is the invention emphasis with the combined method of its mode just, therefore only enumerated the version of the wider heading control loop of two kinds of more common field of applications here, for your guidance, and can help everybody to understand system architecture of the present invention faster.The heading control loop of above-mentioned several structures is the roughly situation of prior art, and all installed steering booster in the heading control loop on most automobiles additional, their performance performances in running car are all roughly the same, the slightly different automobile steering amount that just has (the steering locking angle degree of steered wheel) is big, the automobile steering amount that has is little, and the substantial change of this point and its performance there is no much relations.Below I point out some problems that the heading control loop of prior art on the automobile can allow automobile often run under steam again:

One, the automobile turning radius is big, and vehicle body is inflexible dumb during turning.The driver mostly had such experience when driving: when automobile will turn over the bigger detour of camber, often need the vehicle body of automobile done twice or repeatedly before and after back and forth adjustment (be commonly called as and reverse rotation) just can make vehicle body pass through detour smoothly, if under the very dead situation that detour turns in that the road surface is narrower, also the unforeseen circumstances that wheel falls down the road surface or bumps with the roadside obstacle may take place sometimes.

Two. heading control loop shock-absorbing performance is not good, when running car is on rough road surface, because ground-surface is uneven can be produced some to the vehicle front in travelling and shakes and impact the vehicle front that the function of turning to is arranged, make the heading control loop on the vehicle front be difficult to make the direction held stationary state of automobile in advancing, automobile steering wheel can and then be shaken when vibrations are severe, make driver's both hands feel very uncomfortable, bearing circle can turn over the also travel direction of temporary transient change automobile of an angle voluntarily when serious, allows the driver be difficult to control.About these problems direction Shock absorber (as the Shanghai car Santana) has been installed also on the vehicle that has, but the solution of problem is thorough not enough.

Three. steering effort deficiency, the speed of a motor vehicle are brought up to when to a certain degree turning, and the vehicle body balance quality is not good.When automobile is met turning, as untimely because of slowing down, the trailing wheel that automobile can take place when turning is because the vehicle body action of inertia is wiped sliding phenomenon to road surface one side, and the serious situation under body can roll, and the personal safety meeting is caused some totally unfavorable factors.In addition because the deficiency of steering effort also can make automobile the automobile of the phenomenon of cutting somebody's hair, particularly f-w-d occur when turning.

Summary of the invention: content of the present invention comprises the technical scheme and the beneficial effect of the present invention of goal of the invention and employing, and I will be described one by one.

Goal of the invention: at some problems of in background technology, mentioning, design-calculated combinations of directions control system of the present invention can both solve one by one, and in actual applications, more can further satisfy of the highly sensitive requirement of vast chaufeur to the control system on the automobile.At first the first, the present invention will be from dwindling the automobile turning radius to a great extent, make very flexible and not inflexible that the vehicle body of automobile when turning become.The second, the present invention will make automobile when the road traveling of injustice from improving the shock-absorbing performance of automobile steering control system to a great extent, and direction all can be very steady.The 3rd, the present invention will be from improving the automobile balance of vehicle body under steam to a great extent, reduces the disadvantageous impact dynamics that inertia that automobile produces causes vehicle body greatly when turning, and make the steering effort of automobile performance when turning very enough.Performance is very rapid when others combinations of directions control system of the present invention can also make automobile in turning, and when turning over a detour, what the return of automobile steering also can become is more accurate and timely.It will be argued that in a word: under the busy day by day situation of world today's traffic, the maneuverability that improves automobile is necessary.

Technical scheme: following is main core content of the present invention, forms the keystone configuration and the frame mode thereof of system of the present invention comprising two steps.First step constitutes for the structure of the combined method of combinations of directions control system of the present invention and main technical schemes thereof: make trailing wheel spindle nose and the back axle or the rear-mounted connection mode of automobile into the version identical or similar with the connection mode of propons or forward mounting with vehicle front spindle nose (steering swivel) (comprising some fundamentals when aligning front wheel alignment interior), make trailing wheel also have the function of turning to, and then use spindle arm and steering track rod common parts such as (or hydraulic efficiency gear), the heading control loop of trailing wheel and front-wheel and deflector or power-assisted steering device are connected, by control to deflector or power-assisted steering device, make trailing wheel also have can with the front-wheel function that turns to of Control of Automobile simultaneously, when motor turning, the rear-axle steering direction is opposite with the front-wheel steering direction.

Second step adds keystone configuration and the constructive method thereof that turns to auxiliary returning device for paying of combinations of directions control system of the present invention: when using combinations of directions control system of the present invention, install one at trailing wheel again and turn to auxiliary returning device, its keystone configuration mode is to clamp two and be arranged as the bearing-type fulcrum of straight line by two steel plates, two steel plates are fixed in the inboard of automobile one rear flank wheel with the form of clamping plate, with spring two steel plates are drawn over to one's side, make steel plate clamp two bearing fulcrums arranged side by side, when the automobile steering homing, steel plate is and closes up state, when motor turning, one of them bearing fulcrum rotates and invariant position synchronously with the fixing turning center point of automobile one rear flank wheel is concentric, but drive when rotating that another bearing fulcrum changes position and round its rotation and strut two steel plates of being drawn over to one's side by spring, at this moment steel plate is subjected to the effect of spring tension, will to when rotation the shift position the bearing fulcrum produce resistance and make mobile bearing fulcrum homing, close up up to steel plate and to make two bearing fulcrums all become the return state, and also return of the trailing wheel direction that makes automobile, thereby reach the purpose of car assisted direction return with the return of bearing fulcrum.Simultaneously, because when pull back spring draws back at the steel plate that is strutted, it is increasing that resistance can become, therefore when automobile when turning to, can occur bearing circle change resistance more can big more phenomenon, so in order to guarantee when Control of Automobile turns to, the power of using when the driver feels steering wheel rotation all is the same from start to finish, the inside that turns to two steel plates in the auxiliary returning device is made the structure of nick, can make two bearing fulcrums in the steel plate when strutting steel plate, can slowly enter the part of the inner nick of steel plate like this, and the amplitude that steel plate is strutted slowly diminishes, drawing the amplitude that the pull back spring of steel plate is elongated over to one's side also can slowly diminish thereupon, so just can guarantee that trailing wheel is when turning to, turn to the big or small basically identical of the return resistance that auxiliary returning device produces the wheel that turns to, and all size is the same to make the driver feel the power of usefulness from start to finish when steering wheel rotation.More than for the main technical schemes of system of the present invention.

Beneficial effect: compare with combinations of directions control system of the present invention and prior art heading control loop, combinations of directions control system of the present invention has the following advantages: (one) has improved the balance of auto body, when having reduced automobile and turning in running at high speed, inertia is to the impact dynamics of vehicle body.Use the automobile of combinations of directions control system of the present invention, when turning under steam, the effect of inertia that produces to the impulsive force of vehicle body when having had the trailing wheel that turns to function, will be converted to that the required vehicle body pulsation-free that makes turns over the torsion of this camber in the time of will turning over this detour for automobile, it will be along with the steering angle of automobile back wheel be pushed the vehicle body of automobile to the place ahead along the detour that automobile is turning over, and makes automobile more rapidly and pulsation-free turns over a detour.Automobile with the control of prior art heading control loop is compared, vehicle body can show the automobile of combinations of directions control system of the present invention control when turning more steadily and rapidly, wipe sliding phenomenon from having overcome automobile wheel when fair speed is turned to a great extent to highway one side, and, improved automobile and driver and crew's safety control from reduced automobile automobile occurs owing to the steering effort deficiency under effect of inertia the phenomenon of cutting somebody's hair to a great extent when turning.(2) has dwindled the turn radius of automobile greatly, improves the vehicle body alerting ability.If during with the automobile turning of the heading control loop of prior art control, the steering angle of our assumed vehicle front-wheel is that constant basis is constant, makes automobile change into a circle after the stretch journey of travelling, and to measure this radius of a circle be 20 meters.And then turn-take with the automobile of combinations of directions control system of the present invention control, and the steering angle of vehicle front is identical with the constant basis of the steering angle of the vehicle front that uses the control of prior art heading control loop, and the radius of measuring the circle that the automobile that uses combinations of directions control system control of the present invention changes into then is 10 meters (actual have very little error).Compare with the automobile of prior art heading control loop control, radius during the automobile turning of combinations of directions control system of the present invention control dwindles greatly, so just improved the alerting ability of auto body greatly, made automobile can turn over a detour that angle is more dead easily.(3): improve the automobile shock-absorbing performance of heading control loop under steam, the direction that heading control loop still can the pulsation-free Control of Automobile when automobile was travelled on the road surface of injustice.When the automobile that uses the prior art heading control loop to control travels on the road of injustice, vehicle front runs into the impact resistance that the vibrations back produces, can pass to bearing circle through the part in the heading control loop again by front-wheel, make driver's hand when catching bearing circle, feel very uncomfortable.Can make bearing circle rotate the travel direction of also temporary transient change automobile suddenly when impacting great efforts, make the driver be difficult to control.And the automobile that uses combinations of directions control system of the present invention to control, when vehicle front runs into bigger impact resistance under steam, it is when impacting front-wheel, also can go to impact the trailing wheel that links to each other and have the function of turning to the front-wheel heading control loop through each the connecting portion part in the heading control loop again, if just may make effect after impact endurance test shock appears being subjected in the car load heading control loop when at this moment effect behind the impact endurance test shock all appears being subjected in trailing wheel and front-wheel by front-wheel.That is to say when automobile subdue under steam by uneven road surface produce to the impact endurance test shock of direction control system the time, the front-wheel of automobile and trailing wheel work at the same time and support mutually, and the heading control loop that has so just improved automobile is to the resistance of the impact endurance test shock that runs in travelling.The turning to auxiliary returning device that is installed in simultaneously on the automobile back wheel can be from eliminating the bad interference to the automobile steering control system of the impact endurance test shock that produced by uneven road surface to a great extent, when automobile is travelled on uneven road surface, it is very stable that direction can show, compare with the automobile that the heading control loop of prior art is controlled, it is more superior that the automobile of combinations of directions control system control of the present invention will show on the shock-absorbing performance of automobile steering control system, make more steady that automobile direction under steam shows, the sense of security in the time of bringing handle more can for the people who drives more.With top is after heading control loop with combinations of directions control system of the present invention and prior art compares, some positive useful practicality that the present invention is had in actual applications wish that the present invention can bring how good use for vast automobile driver and crew in actual applications.

The description of drawings and the specific embodiment: four width of cloth Figure of description of introducing below supply (array mode) some concrete mechanical structure form of the formation principle of the invention of reference for when concrete enforcement is of the present invention.Because features simple structure of the present invention, main structure all is made of some common mechanical component, therefore in implementation process about some understandings of technical elements and the step of using when transforming do not have too big difficulty, its exploitativeness is in fact with in short just illustrating: because the version of the f-w-d of existing automobile, just comprised the front-wheel part and controlling the technology type of the travel direction of automobile again when driving running car, the automobile of this is just roughly clear and definite back-wheel drive installs some basic steps that need do when of the present invention (in design install for the automobile of f-w-d the trailing wheel part will be easier when of the present invention) additional in design.Innovation part of the present invention in addition is the innovation of its array mode, and in its in-to-in actual configuration, is formed based on general more common mechanical component.So I am in order to stress array configuration of the present invention and mode of operation in the explanation of embodiment, will be applied to specific embodiments on certain vehicle as for the present invention, then to come to be this styling design and energy reasonable implementation the concrete power operation system in this kind vehicle on of manufacturing one cover, also therefore in implementation, there is no the fixedly specification and the detailed data of each the position part in the system of the present invention based on array mode of the present invention according to the concrete structure of this vehicle.Fig. 1 is one of organization plan that constitutes array configuration of the present invention, main parts size shown in Fig. 1 comprises: 1, bearing circle, 2, Steering gear, 3, worm screw, 4, steel ball nut tooth bar, 5, passive quadrant gear (miniature gears), 6, the steerage gear bar, 7, miniature gears, 8, the intermediate rod tooth bar, 9, turn to auxiliary returning device, state (institute shown in Fig. 2 is underlined and component names is all identical to those shown in Fig. 1) when Fig. 2 is the work of one of organization plan of the present invention shown in Figure 1, its working process shown in Fig. 2 is as follows: when the driver turns left bearing circle 1, by Steering gear 2 worm screw 3 is rotated, along with the rotation of worm screw 3 makes steel ball nut 4 moving for the downstream and drive passive quadrant gear 5 and rotate (working process is identical with the prior art ball-and-worm steering system) on worm screw, at this moment stretch to the miniature gears 7 at steerage gear bar 6 two ends at the place ahead and rear, just can rotate synchronously with passive quadrant gear 5, and the tooth bar 8 and the direction intermediate rod that drive on the front and back wheel direction intermediate rod move right, again by rocking arm make the automobile back wheel right-hand turning to, vehicle front then left-handed turning to, thereby make auto body smoothly left-handed turning to.Part shown in the mark 9 among Fig. 2 is the mode of operation that turns to auxiliary returning device, its working process is as follows: turn to two bearing fulcrums the turning to along with the trailing wheel direction in the auxiliary returning device, strut two steel plates of being drawn over to one's side by spring, at this moment the spring in the steel plate will back be drawn steel plate over to one's side, make steel plate react on two bearing fulcrums and make their homing, thus the direction that makes trailing wheel and car load return more rapidly.Fig. 3 be constitute array configuration of the present invention organization plan two, main parts size shown in Fig. 3 comprises: 1, bearing circle, 2, Steering gear, 3, miniature gears, 4, tooth bar, 5, the steerage gear bar, 6, quadrant gear, 7, turn to auxiliary returning device, its working process is as follows: when the driver turns to, steering wheel rotation 1 rotates miniature gears 3 by Steering gear 2, and move and miniature gears 3 ingear tooth bars 4 forward or backward, steerage gear bar 5 is moved forward or backward, make front-and rear-wheel steer by rocking arm again, partly used a pair of quadrant gear 6 as the intermediary's transmission device in the steering swivel system at trailing wheel, the intermediary's transmission by quadrant gear 6 makes the rear-axle steering direction opposite with the front-wheel steering direction.Fig. 4 is the mode of operation that turns to auxiliary returning device shown in the mark 7 among Fig. 3: when rear-axle steering, position when two bearing fulcrums on the quadrant gear can change the original direction return along with the rotation of quadrant gear, and strut two steel plates of being drawn over to one's side by spring, steel plate has been subjected to drawing over to one's side of spring tension then, make two bearing fulcrum homings, thereby make the rapid return of turning to of automobile.(in addition shown in Fig. 3 with the lower part: bearing circle 1 below miniature gears 3 and the running part of tooth bar 4, an also available circulating ball type power-assisted steering device replaces, and the rocking arm of available cycles ball formula power-assisted steering device moves forward and backward steerage gear bar 5 and controls turning to of front and back wheel).With top is of the present invention two routine embodiments and relevant description of drawings.

Claims

Independent claims 1: a kind ofly be used for controlling the compound type heading control loop that wheel formula automobile turns under steam, this system is controlled direction pull bar and rocking arm common parts such as (or hydraulic efficiency gear) by deflector or power-assisted steering device by bearing circle and makes wheel steering motor, its principal character is to make trailing wheel have the function of turning to through the transformation of the way on the trailing wheel spindle nose of automobile and back axle or rear-mounted connecting bridge, use the direction pull bar trailing wheel to be connected with the heading control loop of front-wheel again with rocking arm common parts such as (or hydraulic efficiency gear), allow trailing wheel and front-wheel control the travel direction of automobile simultaneously, the rear-axle steering direction is opposite with the front-wheel steering direction during motor turning.
Independent claims 2: a kind of be used for preventing automobile take place under steam automobile steering disorderly the phenomenon of pendulum and the direction that can make automobile turning to the back rapidly homing turn to auxiliary returning device, its principal character is to be clamped the fulcrum of two bearing-types and constituted by two steel plates of drawing over to one's side with spring, one of them position of the fulcrum is constant during motor turning, another fulcrum is then along with turning to of automotive wheel moves and strut steel plate in steel plate, make steel plate under the effect of spring tension, produce the drag effect of return, thereby make automobile steering follow return it.