CN209479412U - A kind of automobile intelligent active air-inlet grille - Google Patents

Abstract

The utility model discloses a kind of automobile intelligent active air-inlet grilles, by driving motor can it is electrodeless control grille blades aperture and make its keep stablize, air multiplying assembly mainly controls its working condition by the size of electric current, and in addition there are also piezo-electric devices to be designed to recovery section aerodynamic energy.Whole device has broken the limitation of conventional fixed-type automobile grills, can be not necessarily to artificial passive intervention according to practical vehicle condition by self the actively intelligence adjusting of various transducing signals.The utility model patent has many advantages, such as that compact-sized, arrangement is convenient, is easily integrated control, it can according to need and cooperate with automobile other systems, the control of device mostlys come from the size of electric current, also has been compliant with the requirement that future society develops towards advanced electrical and electronic technology direction.

Description

A kind of automobile intelligent active air-inlet grille

Technical field

The utility model, which belongs to, is related to automobile air inlet system, radiating of engine cabin technology and automobile running resistance research skill Art field, the utility model be specially it is a kind of using motor corner control grille blades aperture and using air multiplying assembly progress The intelligent active automobile air inlet grille device of additional-air inlet.

Background technique

Air-inlet grille for automobile is the important component of vehicle engine compartments, and there are two critical functions for it: air inlet and heat dissipation. Therefore, the quality of air-inlet grille is directly concerning the comprehensive performance for arriving vehicle complete vehicle.Although the air-inlet grille of conventional fixed-type is It is widely used in automotive field, and is substantially able to satisfy the requirements of the existing air inlet of automobile and the regulation that radiates, but there is Grid aperture is not adjustable, charge flow rate is unable to active control and is depended entirely on speed and external environment, can be can increase automobile Running resistance and can not with the deficiencies of automobile other systems integrated control place.Be not suitable for enging cabin intelligent control sum aggregate Future development requirement at change and automobile industry towards advanced electrical and electronic technology.

The air-inlet grille of general vehicle can not actively close.Just starting cold vehicle when driving, air equally can be for temperature simultaneously Not high water tank cooling can not make rapidly engine enter preferable operating temperature to keep water temperature soaring slowly.Active air inlet grille Grid can be changed air-inlet grille must be opened and closed to control air inflow and windage, thus improve fuel economy and be rapidly achieved engine compared with Good operating temperature.Active air-inlet grille advantage: 1, automobile in cold car state, close by grid, is conducive to engine and quickly enters Preferred temperature state.2, after grid is opened, while heat dissipation, air drag can be reduced to a certain extent, to promote combustion Oily economy.

No matter conventional fixed-type air-inlet grille for automobile not can be carried out active accommodation under what vehicle condition, therefore there are parts In the case of be adverse conditions to running car.Even if having had already appeared some active air-inlet grilles now, but its Working mould Formula is relatively simple, and air-suction state is solely dependent upon grid aperture and external environment completely, can not active air inlet, thus for height The air-intake load demand of intensity can not be readily available satisfaction.

Utility model content

For solve conventional fixed-type air-inlet grille for automobile of the existing technology can not active accommodation air inlet defect, this reality A kind of automotive intelligent active air inlet grille device is provided with novel, aperture is stepless, i.e., needs motor according to automobile The output for having a linear change is met to various vehicle conditions, in this way can be fixed and single to avoid grid aperture mode and make At air mass flow is insufficient or waste.It is further provided with air multiplying assembly and piezo-electric device, is more in line with automobile Green Development With the theory of intellectual development.Whole device almost only needs to be sent according to various transducing signals to ECU treated output signal control The size of current of system carries out relevant control.It is greatly created compared to having had for more traditional fixed type automobile air-inlet grille New property and reliability.In summary: the intelligent active air inlet grille device of this utility model is both utility model person to existing Air-inlet grille for automobile technical idea is once bold in innovation and is the following internal-combustion engines vehicle or new-energy automobile grill designs neck The progress again in domain.Specific design is as follows:

A kind of automobile intelligent active air-inlet grille, the rigid internal frame including active grid, which is characterized in that active grid Rigid internal frame in be provided with grille blades, the grille blades connect axis connection by center by upper and lower two half vanes, Mandril is fixedly connected by rubber connecting member with the both ends of upper and lower two half vanes, and the middle part of mandril and cross bar are hinged, and is cut with scissors It meets place and the line of the axis hole of center connecting shaft is vertical with cross bar, the center of cross bar receives the dynamic of driving motor by drive splines Power；

Being provided in the aperture limit of grille blades on the surface of grille blades windward can be direct with external air flow Contact has air-flow piezo-electric device；

Air multiplying assembly is provided on the rigid internal frame of active grid, the air multiplying assembly includes that setting exists Admission line on the rigid internal frame of active grid, the diameter being provided on admission line be 0.5~1.6mm (preferably Gap and micro-air compressor composition, micro-air compressor 1.0mm) blows the air on admission line periphery by gap Enter inside active air-inlet grille.Air multiplying assembly be allow air it is wide from 0.5~1.6mm (preferably 1.0mm), around annulus It produces by boasting in the notch of amplifier rotation.Annulus amplifier is exactly to be fallen a small amount of air that supercharger sucks air inlet with a whirlpool Pressurization, is then rotating ejection in a very thin slit of the outer rim of great circle, this group is rotating spray according to a certain direction The very big air stream of flow very little but pressure out has played the fan page of similar conventional fan, they can be agitated in great circle more More air is flowed through great circle, to generate " wind ").Between the incisions, air stream be close to inner wall flowing while because Coanda effect exists and " is blown " around driving after the flowing of general 15 times of air and go out salubrious cool breeze, when 35 kilometers of scooter.Health Attached wall effect or Coanda effect are also known as up to effect (CoandaEffect).Fluid (water flow or air-flow) is by leaving original flowing Direction is changed to the tendency flowed with the body surface of protrusion.When there are surfaces to rub between fluid and body surface that it is flowed through (it could also say that fluid viscosity) when wiping, as long as curvature is little, fluid can be flowed along body surface.

The power of motor of micro-air compressor selects: life is generally 50W with bladeless fan, and brushless motor sucks gas Amount is 30L/S, and air output is up to 450L/S.When car engine temperature is excessively high, but speed is lower, grid intake and starts When the cooling system of machine itself can not reduce engine compartment temperature, vehicle air multiplying assembly works.Want to allow automobile Enging cabin cooling, is set to automobile in the air inflow of 108Km/h grid for air inflow.Air inflow is when this grid maximum opening 3600L/S, then the motor inspiratory capacity of vehicle air multiplying assembly is about 240L/S, therefore motor maximum power is selected as 400W.

The selection of air multiplying assembly gear number:

One grade: electric current 4A, power 100W

After working long hours suitable for automobile, stop rest when.Engine temperature is still very high at this time, then utilizes air Multiplying assembly carries out the work of short time small-power, carries out short time cooling to enging cabin.

Two grades: electric current 6A, power 200W

Suitable for automobile in the process of moving when parking waits traffic lights, when engine idle operation, engine compartment temperature Be not it is very high, allow air multiplying assembly to work before running car with certain power short time.

Third gear: electric current 10A, power 400W

Suitable for car after running at high speed for a long time, into the lower region of the speeds such as urban district, engine temperature is higher But intake is smaller, when can not effectively cooling down to enging cabin, air multiplying assembly is worked at this time with maximum power, Achieve the effect that quickly to cool down to enging cabin.

The automotive intelligent active air inlet grille device is designed to be pre-installed on automobile engine nacelle forward position, Mei Yitai Vehicle installation is a set of.In addition component to be added needed for the device works normally has conducting wire, switch, Vehicular accumulator cell, electric current Processor, stable-pressure device etc. do not repeat in detail.Furthermore the device, which can according to need, allows mounted air conditioner system, automobile front The system coordinations cooperating such as cooling system, vehicle-mounted ECU collectively constitutes a part of more intelligentized automobile engine nacelle

Further, the rigid internal frame of the active grid is rectangle, is provided in the surrounding of rigid internal frame The air multiplying assembly of autonomous working.

Further, the driving motor is stepper motor.Driving motor category is the power of grille blades aperture adjustment Source.By selecting repeatedly, finally determine to select stepper motor in this utility model, this is because stepper motor is will be electric Shift pulse signal is the opened loop control motor of angular displacement or displacement of the lines, is the main execution in modern digital program control system Element, application are extremely wide.In the case where non-overload, the revolving speed of motor, the position of stopping are solely dependent upon the frequency of pulse signal Rate and umber of pulse, without being influenced by load variation, as soon as when step actuator receives a pulse signal, it drives stepping electricity Machine by setting direction rotate a fixed angle, referred to as " step angle ", its rotation be with fixed angle step by step Operation.Angular displacement can be controlled by control pulse number, to achieve the purpose that accurate positionin；It can pass through simultaneously Pulse frequency is controlled to control the velocity and acceleration of motor rotation, to achieve the purpose that speed regulation.The dress of this utility model It sets blade to be rotated a certain angle by stepper motor to adjust the aperture of air-inlet grille, reaches saving fuel oil economy, reduce Windage improves its dynamic property.In practical work process, the loading moment under various frequencies must be in the model of torque frequency feature curve In enclosing.Maximum static moment Mjmax big motor, loading moment are big in general.

When selecting motor concrete model, calculated according to the following steps:

1, it when selecting stepper motor, first has to guarantee that the output power of stepper motor is greater than the required power of load.And When selecting power stepping motor, the load torque of calculating machine system is first had to, the torque frequency feature of motor is able to satisfy mechanical load And there is certain surplus to guarantee that its operation can.In practical work process, the loading moment under various frequencies must be special in square frequency In the range of linearity curve.Maximum static moment Mjmax big motor, loading moment are big in general.

When selecting stepper motor, step angle and mechanical system should be made to match, pulse needed for lathe available in this way is worked as Amount.

(1) in mechanical transmission course in order to enable there is smaller pulse equivalency, first is that can change the lead of screw rod, two It is that can be completed by the Multi-level microstep of stepper motor.

(2) but subdivision can only change its resolution ratio, not change its precision.Precision is determined by the inherent characteristic of motor.

When selecting power stepping motor, it should estimate the load inertia of mechanical load and the initiation culture of lathe requirement, make Match that there are also certain surpluses with the inertial frequency characteristic of stepper motor, be allowed to most high speed continuous work frequency and be able to satisfy machine The needs that bed fast moves

The selection of shape: generally according to the level of torque of needs, to select the motor of which kind of model.In general, torsion In 0.8Nm hereinafter, 20,28,35,39,42 (fuselage diameter or Fang Du of motor, units: mm) of selection；Torsion is on the left side 1Nm Right, select 57 motors more appropriate.It is necessary to selecting 86,110,130 equal-specifications in the case that torsion is big in several Nm or more Stepper motor.Torque needed for air-inlet grille is, therefore selects 57 motors more appropriate.VRDM368/LHA type is selected, fuselage length is 79mm, conductor length 450mm.

So for final executive component i.e. air-inlet grille blade, the size of aperture is also extremely worthy of careful study, Specific influence factor is mainly engine compartment temperature and the running resistance size (mainly air drag) that automobile is subject to.

Engine compartment temperature and the aperture of air-inlet grille can be indicated with formula a=90-kT

Wherein a: the opening and closing angle of air-inlet grille, T: engine compartment temperature, k: constant coefficient

Air-inlet grille there are one effect be exactly the component that can protect inside water tank and enging cabin, make its avoid by The shock of external object.The moulding of automobile can take into account aerodynamics, and when running at high speed, most of object all can be by air In air-flow flick, the component in automobile engine nacelle would not also be damaged.

In the case where the shape of vehicle remains unchanged, the air resistance coefficient of vehicle is certain value, not with the variation of speed Variation.But when the aperture of air-inlet grille changes, the shape of vehicle can change therewith, this also results in air resistance coefficient Changed.If when running at high speed, it is ensured that without the cooling enging cabin of external air, wind can then be reduced by closing air-inlet grille Resistance coefficient improves the stability and fuel economy of engine to reduce air drag.

Further, mandril and cross bar pass through pin-hinges.

Further, the aperture of grille blades is 60 degree~120 degree.

Further, the air-flow piezo-electric device is made of PVDF thin film.If applying pressure to piezoelectric material, it will It generates potential difference (referred to as direct piezoelectric effect), otherwise applies voltage, then generate mechanical stress (referred to as inverse piezoelectric effect).

The advantages of Kynoar PVDF thin film: PVDF is optimal one of the piezoelectric material of current piezoelectric property, as one The kind membranaceous transductive material of novel thin has the characteristics that quality is light and soft, reelability is good, piezoelectric property is good.With currently used inorganic matter Piezoelectric material (such as quartz, piezoelectric ceramics class) is compared, it also has, and acoustic impedance is small, frequency response is wide, dielectric constant is small, impact resistance Property is strong, it is easy to process at arbitrary shape the advantages that.

Further, the airflow line is made of ABS plastic.ABS plastic is acrylonitrile (A), butadiene (B), benzene The terpolymer of ethylene (S) three kinds of monomers, three kinds of monomer relative amounts can arbitrarily change, and various resins are made.ABS has three concurrently The common performance of kind of constituent element, it is resistant to chemical etching, heat-resisting that A makes its, and has certain surface hardness, and B makes it have high resiliency and tough Property, S makes it have the machine-shaping characteristic of thermoplastic and improves electrical property.Therefore ABS plastic is that a kind of raw material is easy to get, is comprehensive Close functional, cheap, widely used " tough and tensile, matter is firmly, rigidly " material.

Further, the size of the rigid internal frame of the active grid is 500~700mm*250~350mm.It is preferred that , total form parameter of air-inlet grille is 600mm*300mm.Grille blades use high rigidity carbon fiber, carbon fiber can into It is dipped in front of mold among epoxy resin (a kind of colloidal material), forms a kind of composite material.It is mostly used in bicycle trade Carbon fiber all process in this form, this technique is called " preimpregnation ".Resin can complete two tasks.First task It is to maintain carbon fiber together.Second task is that resin will increase toughness and durability.Impact is being encountered (such as after slight plasticizing Hit or rubble impact) after can be deformed, fiercely attack to help to absorb, the serious tearing without will lead to fiber.

The utility model has the advantages that

The utility model can be used in stroke-increasing electric automobile in traditional combustion engine automobile and new-energy automobile, mixing is moved On the vehicles such as power automobile and hydrogen engine automobile, mountable in automobile engine nacelle forward position, which is to realize according to hair The many factors such as dynamic cabin temperature, vehicle running state and environment temperature carry out active control and adjust offer condition, finally make to fill It sets execution part and reaches real-time status required for automobile.Wherein, driving motor can it is electrodeless control grille blades aperture and make It keeps stablizing, and air multiplying assembly mainly controls its working condition by the size of electric current, and in addition there are also piezo-electric device quilts It is designed to recovery section aerodynamic energy.Whole device has broken the limitation of conventional fixed-type automobile grills, can be according to reality Border vehicle condition is not necessarily to artificial passive intervention by self the actively intelligence adjusting of various transducing signals.The utility model patent has knot Structure is compact, arrangement is convenient, is easily integrated the advantages that control, can according to need and cooperates with automobile other systems, device Control mostlys come from the size of electric current, also has been compliant with the requirement that future society develops towards advanced electrical and electronic technology direction.

Detailed description of the invention

Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:

Fig. 1 is the utility model automobile intelligent active air inlet grille device driving motor main view；

Fig. 2 is the structural schematic diagram of air multiplying assembly in the utility model automobile intelligent active air inlet grille device；

Fig. 3 is the enlarged drawing in Fig. 2 at I；

The overall structure diagram of automobile intelligent active air inlet grille device in Fig. 4 embodiment；

Fig. 5 is the utility model automobile intelligent active air inlet grille device internal drive mechanism master-plan left view；

Fig. 6 is the utility model automobile intelligent active air inlet grille device internal drive mechanism master-plan front view；

Wherein, 1, driving motor conducting wire；2, driving motor shell；3, driving motor drive shaft, 4, admission line；5, it stitches Gap；6, active air inlet grille device rigid internal frame；7, upper integral blade；8, lower integral blade；9, center connecting shaft；10, left Right two half portion blade junction gaps；11, pin；12, the hinge joint of mandril and cross bar；13, mandril；14, rubber connecting member； 15, half vane；16, blade center of rotation axis hole；17, cross bar；18, mandril；19, drive splines.

Specific embodiment

It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.

Embodiment

A kind of automobile intelligent active air-inlet grille, the rigid internal frame 6 including active grid, the rigid inside casing of active grid It is provided with integral blade 7, lower integral blade 8, upper and lower completeblade in frame 6 and is formed by connecting by left and right two halves partial blade；It is left It is formed again by upper and lower two half vanes 15 by the connection of center connecting shaft 9 inside right two halves partial blade, mandril 13 passes through rubber Connecting component 14 is fixedly connected with the both ends of upper and lower two half vanes 15, and the middle part of mandril 13 and cross bar 20 are hinged, and hinged place Vertical with cross bar 20 with the line of the axis hole of center connecting shaft 9, the center of cross bar 20 receives driving motor by drive splines 19 The power of drive shaft；

Being provided in the aperture limit of grille blades on the surface of grille blades windward can be direct with external air flow Contact has air-flow piezo-electric device；

Air multiplying assembly is provided on the rigid internal frame 6 of active grid, the air multiplying assembly includes setting Admission line 4 on the rigid internal frame of active grid, the gap 5 that the diameter being provided on admission line is 0.5~1.6mm It is formed with micro-air compressor, the air on admission line periphery is blown into active air inlet grille by gap by micro-air compressor Inside grid.

The rigid internal frame 6 of active grid is rectangle, is provided with the air of autonomous working in the surrounding of rigid internal frame Multiplying assembly.

The transmitting of driving motor conducting wire 1 receives the electric impulse signal of automobile ECU, and driving motor drive shaft 3 is turned over one by control Power is transferred to cross bar 20 by drive splines 19 by fixed angle, driving motor drive shaft 3, and then power passes through mandril and cross The hinge joint 17 of bar is transferred to mandril 18, and last power is transmitted to grille blades by rubber connecting member 14.Grille blades with Will do it opening or the flat corresponding actions of contracting, i.e. the opening and closing of grid, as long as control driving motor drive shaft 3 rotates forward or anti- Turn, i.e., the electrodeless folding of controllable grille blades.In addition the piezoelectric material dress of piezo-electric device is attached to integral blade 7, lower entirety It (is not marked in figure) at the surface windward of blade 8, piezoelectric material light weight, thickness are thin and piezoelectric effect is good, are turned by aerodynamic energy The electric energy of change is delivered to Vehicular accumulator cell by extra lead.Air multiplying assembly is designed to be mounted on active air inlet grille device The external of rigid internal frame 6 carries out additional-air inlet dissipated motor cabin, it has 3 modes, the control conversion of each mode (gear) The size for supplying its electric current need to be only controlled,

One grade: electric current 4A, power 100W, after working long hours suitable for automobile, stop rest when.Engine temperature at this time Still very high, the work of short time small-power then is carried out using air multiplying assembly, short time cooling is carried out to enging cabin.

Two grades: electric current 6A, power 200W, suitable for automobile in the process of moving when parking waits traffic lights, engine is idle Speed work when, engine compartment temperature be not it is very high, allow air multiplying assembly with certain power short time work before running car Make.

Third gear: electric current 10A, power 400W, it is lower into speeds such as urban districts suitable for car after running at high speed for a long time Region, engine temperature is higher but intake is smaller, when can not be effectively cooling to enging cabin, air times at this time It is installed in addition with to set and be worked with maximum power, achieve the effect that quickly to cool down to enging cabin.

Total form parameter of air-inlet grille is 600mm*300mm, the parameters of grille blades be 600mm*75mm*3mm (it is long, It is wide, thick).Air-inlet grille blade quantity design are as follows: upper and lower two panels.

The a length of 200mm of cross axis dimensions is supported, diameter 10mm, material: 38CrMoAlA is quenched

Mandril is having a size of long 80mm, diameter 6mm, material: 40Cr

Pin diameter is 2.8mm, material: 40MoCrAl.

Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of automobile intelligent active air-inlet grille, the rigid internal frame including active grid, which is characterized in that active grid Grille blades are provided in rigid internal frame, the grille blades connect axis connection, top by center by upper and lower two half vanes Bar is fixedly connected by rubber connecting member with the both ends of upper and lower two half vanes, and the middle part of mandril and cross bar are hinged, and hinged Place is vertical with cross bar with the line of the axis hole of center connecting shaft, and the center of cross bar passes through drive splines and receives the dynamic of driving motor Power.

2. automobile intelligent active air-inlet grille as described in claim 1, which is characterized in that on grille blades surface windward Be provided with can directly be contacted with external air flow in the aperture limit of grille blades have air-flow piezo-electric device.

3. automobile intelligent active air-inlet grille as described in claim 1, which is characterized in that in the rigid internal frame of active grid On be provided with air multiplying assembly, the air multiplying assembly includes the air inlet pipe being arranged on the rigid internal frame of active grid Road, the gap that the diameter being provided on admission line is 0.5~1.6mm and micro-air compressor composition, miniature air compression The air on admission line periphery is blown into inside active air-inlet grille by machine by gap.

4. automobile intelligent active air-inlet grille as claimed in claim 3, which is characterized in that in the rigidity of the active grid Frame is rectangle, is provided with the air multiplying assembly of autonomous working in the surrounding of rigid internal frame.

5. automobile intelligent active air-inlet grille according to any one of claims 1-4, which is characterized in that the driving motor For stepper motor.

6. automobile intelligent active air-inlet grille as described in claim 1, which is characterized in that the aperture of grille blades be 60 degree~ 120 degree.

7. automobile intelligent active air-inlet grille as claimed in claim 2, which is characterized in that the air-flow piezo-electric device is by PVDF Film composition.

8. automobile intelligent active air-inlet grille as claimed in claim 3, which is characterized in that the admission line is moulded using ABS Material is made.

9. automobile intelligent active air-inlet grille as claimed in claim 3, which is characterized in that the function of the micro-air compressor Rate is set as electric current 4A, power 100W, electric current 6A, tri- work gear numbers of power 200W and electric current 10A, power 400W.

10. automobile intelligent active air-inlet grille as claimed in claim 3, which is characterized in that the seam being provided on admission line The diameter of gap is 1.0mm.