CN106379240B - A kind of biomimetic type low-drag coefficient match vehicle rear-view mirror - Google Patents
A kind of biomimetic type low-drag coefficient match vehicle rear-view mirror Download PDFInfo
- Publication number
- CN106379240B CN106379240B CN201610891144.XA CN201610891144A CN106379240B CN 106379240 B CN106379240 B CN 106379240B CN 201610891144 A CN201610891144 A CN 201610891144A CN 106379240 B CN106379240 B CN 106379240B
- Authority
- CN
- China
- Prior art keywords
- curve
- swift
- wing
- mirror housing
- mirror
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/02—Rear-view mirror arrangements
- B60R1/06—Rear-view mirror arrangements mounted on vehicle exterior
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
Abstract
The present invention relates to a kind of low-drag coefficient automobile rearview mirrors, specifically a kind of biomimetic type low-drag coefficient with swift wing characteristic matches vehicle rear-view mirror, the bionical curve shape of wing feature when the vehicle rear-view mirror shell outer profile curve is circled in the air using swift, the open end contour curve of back-mirror housing is elliptical shape, and the connecting pin contour curve of back-mirror housing and car body uses half-oval shaped；Present invention improves the fuel economy of racing car, shear flow that can be more smooth, sound insulation, noise reduction are more preferable, promote vehicle NVH performances, and having many advantages, such as simple in structure, moulding streamline, aesthetic in appearance, wind to make an uproar, small, air resistance coefficient is small.
Description
Technical field
The present invention relates to a kind of low-drag coefficient automobile rearview mirrors, specifically a kind of to have swift wing characteristic
Biomimetic type low-drag coefficient match vehicle rear-view mirror.
Background technology
Studies have shown that racing car its main resistance when running at high speed is air drag.When racing car is with the speed row of 80km/h
When sailing, the power of engine 60% is used for overcoming air drag；When racing car with the speed of 150km/h when driving, air drag is
2-3 times of rolling resistance, it may be said that the aerodynamic performance of an automobile directly affects its dynamic property, fuel economy.With
Aerodynamic continuous development in recent years, the drag reduction optimization of racing car surface attachment also gradually attracts people's attention.Research
Show air-flow interference drag caused by racing car surface attachment, eyelet, groove and gap etc. account for about total air drag 5%~
16%.Rearview mirror is placed in outside automobile in air flow field as important surface attachment is naked, caused by resistance be vehicle air
The 2%-5% of resistance changes simultaneously the air flow field near A columns.This means that can have by optimizing rearview mirror geometry
Effect improves vehicle dynamic property, fuel economy.
Existing racing car is mostly formed by mirror shell, minute surface, minute surface tray combination with rearview mirror camera lens, and wherein mirror shell is and air
The direct component of contact is the direct component for influencing body drag coefficient.Traditional automobile mirror shell mostly uses cylinder, sphere
Constant current contour type geometry combinations form, this is mainly due to the considerations of vehicle body entirety cleanliness, technique and cost.Test table
Bright, the rearview mirror of such combining form tends not to show good aerodynamic performance in wind tunnel experiment, certain
The fuel economy of automobile is improved in degree.In order to improve this problem, we are set again using the method for " Bionic Design "
Count rearview mirror.
Nature biotechnology passes through evolution in 1 years, has good adaptive capacity to environment, this is the innovation and creation of the mankind
Provide inspiration.Studies have shown that the swift for being known as the title of " envoy in wind " passes through prolonged biological evolution, wing is flying
There is geometry (Fig. 1) certain Shi Chengxian good air conducting to hinder characteristic with air reducing adhesion.The present invention is basic herein
Above by its wing vertical section outer profile curve of least square fitting, a kind of racing car with low-drag coefficient is designed
With back-mirror housing (Fig. 2), while the sight property of rearview mirror is improved, increases the cleanliness of vehicle.In addition, the present invention can improve
Air flow field near A columns reduces the presence of turbulent flow.
Invention content
The purpose of the invention is to overcome the deficiencies in the prior art, improve the fuel economy of racing car, provide a kind of knot
The match Vehicular rearview for the biomimetic type low-drag coefficient that structure is simple, moulding streamline, aesthetic in appearance, wind are made an uproar small, air resistance coefficient is small
Mirror.
The object of the present invention is achieved like this：
The bionical curve EF shapes of wing feature when the vehicle rear-view mirror shell outer profile curve is circled in the air using swift, after
The open end contour curve of visor shell is ellipse LM shapes, and the connecting pin contour curve of back-mirror housing and car body uses half ellipse
Circle NP shapes；
Specifically manufacturing method is：
(1), wing feature when swift circles in the air is recorded by high-speed camera, by the wing feature of record by optimization
After reason, by wing vertical section outer profile Drawing of Curve on graph paper, by data on graph paper after Least Square in Processing
Fit swift wing vertical section outer profile curvilinear equation 1-1：
(2), swift wing vertical section outer profile curvilinear equation is imported into SolidWorks and records rain with high-speed camera
Wing feature when swallow circles in the air carries out comparison optimization, it is ensured thatSwift wing vertical sectionThe fitting precision of outer profile curve, it is described quasi-
It is three times to close number；
(3), the swift wing vertical section outer profile curvilinear equation after optimizing comparison is drawn in SolidWorks, and
Curve LM, NP are drawn in corresponding position, and curve LM is oval structure, and NP is semiellipse structure, and design parameter is as follows：
The parameter of oval LM is：Central coordinate of circle (94,0), major axis radius 217, minor axis radius 100.
The parameter of oval NP is：Central coordinate of circle (- 36,54), major axis radius 100, minor axis radius 52.
Bionical curve EF：
(4), after curve LM, NP, EF completes, using curve EF as back-mirror housing outer profile constraint curve, ellipse
LM carries out surface filling as back-mirror housing open end contour curve repairing boundary, and the curved surface after filling is carried out at thickening
Reason, thickness 5mm.Using semiellipse NP as the connecting pin contour curve of back-mirror housing and car body, after entity is stretched to
The agent model of racing car back-mirror housing structure is finally obtained after visor shell.
It advantages of the present invention and has the technical effect that：
(1), the present invention relates to a kind of biomimetic type low-drag coefficients to match vehicle rear-view mirror, and curved surface directrix exactly likes windward
Light and handy swift wing.The present invention has abandoned the design of traditional cylinder, sphere etc. " bluff-body type " rearview mirror.
(2), biomimetic type rearview mirror of the present invention uses Bionic Design theory.There to be the resistance of good air reducing adhesion
Design (Fig. 3) of the swift wing vertical section outer profile curve of characteristic for racing car rearview mirror curved surface directrix windward.Rearview mirror is met
Wind curved surface directrix equation is shown in that formula 1-1, directrix and form for curvature are as shown in Figure 5.
(3), there is curved surface directrix biomimetic type rearview mirror of the present invention variable curvature characteristic, curvature presentation first to become smaller windward
After increase, then become smaller and increase, finally tend to the variation tendency (Fig. 3) of straight line.
(4), biomimetic type back-mirror housing main body is formed by surface filling, wherein repairing boundary curve is ellipse, constraint is bent
Line is swift wing vertical section outer profile curve.Surface filling have curved surface optimization, contour completion, simple in structure, moulding streamline,
Advantage aesthetic in appearance, air resistance coefficient is small, air conducting is good.
The parameter of oval LM is：Central coordinate of circle (94,0), major axis radius 217, minor axis radius 100.
The parameter of oval NP is：Central coordinate of circle (- 36,54), major axis radius 100, minor axis radius 52.
(5), involved biomimetic type back-mirror housing thickness is 5mm, and the curved surface after thickening carries out fillet processing, mesh
Be the air resistance coefficient for further decreasing bonnet.
(6), carbon fibre material can be used in back-mirror housing.With carbon fiber enhancement resin base composite material replace it is traditional after
Visor shell can effectively reduce vehicle body total quality, make it possible that further decreasing automobile wind makes an uproar.Back-mirror housing shape,
Preceding face thickness, length-width ratio, support height, rear face depth, angle parameter, windward angle, cut angle it is constant under the premise of, fibrous layer from
Laying angular arrangements under are [90/45/0] (Fig. 4), wherein 0 degree of direction is that rearview mirror is lateral.Select such ply stacking-sequence
Purpose be mainly bending stiffness, torsion stiffness and Modal Performances etc. when considering back-mirror housing windward.
(7), bio-based materials also can be used in back-mirror housing material, and hemp, sisal hemp, jute, the palm fibre in plant fiber are put
Leaf and bamboo fibre etc. are extraordinary reinforcing materials, they combined with degradable basis material be made can be degradable it is " green
Color composite material ".Traditional back-mirror housing material is replaced with bio-based materials, can make automobile more green, environmental protection, biology
Base material can derive from the plant fibers such as fruit, soya bean, sugarcane, sweet potato, corn, bamboo, flax of plant.
(8), 3D printing technique can be used in back-mirror housing.
(9), back-mirror housing according to the present invention can as needed carry out swift wing vertical section outer profile curve
It stretches, rotation, to design various sizes of back-mirror housing, meets the needs of different automobile types.
(10), the present invention is biomimetic type back-mirror housing, and shear flow that can be more smooth, sound insulation, noise reduction are more preferable,
Promote vehicle NVH performances.
Description of the drawings
Wing state diagram when Fig. 1 is swift flight.
Fig. 2 is the biomimetic type back-mirror housing structure chart of the low-drag coefficient of the present invention.
Fig. 3 is that the present invention fits the swift wing vertical section outer profile directrix come and its Curvature varying tendency chart.
Fig. 4 is the laying angle conceptual scheme of three layers of fibrous layer of back-mirror housing of the present invention from top to bottom.
Fig. 5 is back-mirror housing of the present invention.
Specific implementation mode
It is as follows that the present invention relates to specific embodiments：
(1), wing feature when swift circles in the air is recorded by high-speed camera, by the wing feature of record by optimization
After reason, by wing vertical section outer profile Drawing of Curve on graph paper, specific drawing result is as shown in Figure 3.By number on graph paper
According to swift wing vertical section outer profile curvilinear equation is fitted after Least Square in Processing, formula 1-1 is referred to.
(2), swift wing vertical section outer profile curvilinear equation is imported into SolidWorks and records rain with high-speed camera
Wing feature when swallow circles in the air is compared, it is ensured that fitting precision, the fitting number that the present invention uses is three times；
(3), outer profile curvilinear equation is drawn in SolidWorks (EF curves in Fig. 5) after optimizing comparison, and in phase
Position is answered to draw curve LM, NP, curve LM, NP are oval structure, and design parameter is as follows：
The parameter of oval LM is：Central coordinate of circle (94,0), major axis radius 217, minor axis radius 100.
The parameter of oval NP is：Central coordinate of circle (- 36,54), major axis radius 100, minor axis radius 52.
Bionical curve EF：
(4), after curve LM, NP, EF completes, using curve EF as constraint curve, ellipse LM as repairing boundary into
Curved surface after filling is carried out thickening processing by row surface filling, and the drafting mode of thickness 5mm, oval NP are substantially the same, finally
Obtain the agent model of racing car rearview mirror.
In order to further decrease the air resistance coefficient of rearview mirror, the present invention carries out fillet design to agent model, and fillet is big
It is small flexibly to be grasped as needed.
The present invention has abandoned traditional match vehicle rear-view mirror, uses lighter imitative of lower maintenance cost, safety higher, quality instead
Raw formula rearview mirror.Biomimetic type match vehicle rear-view mirror according to the present invention can be as needed to swift wing vertical section outer profile song
Line is stretched, is stretched, to design various sizes of biomimetic type rearview mirror, to meet the needs of different automobile types.
Claims (2)
1. a kind of biomimetic type low-drag coefficient matches vehicle rear-view mirror, it is characterised in that：The vehicle rear-view mirror shell foreign steamer
The open end contour curve of the bionical curve EF shapes of wing feature when wide curve is circled in the air using swift, back-mirror housing is ellipse
The connecting pin contour curve of LM shapes, back-mirror housing and car body uses semiellipse NP shapes；
Specifically preparation method is：
(1), wing feature when swift circles in the air is recorded by high-speed camera, the wing feature of record is passed through into optimization processing
Afterwards, wing vertical section outer profile Drawing of Curve is intended data on graph paper on graph paper after Least Square in Processing
Close out swift wing vertical section outer profile curvilinear equation 1-1：
(2), swift wing vertical section outer profile curvilinear equation is imported into SolidWorks and flown with high-speed camera record swift
Wing feature when Xiang carries out comparison optimization, it is ensured that the fitting precision of swift wing vertical section outer profile curve, the fitting time
Number is three times；
(3), outer profile curvilinear equation will be drawn in SolidWorks after comparison optimization, and corresponding position draw curve LM,
NP, curve LM, NP are oval structure, and design parameter is as follows：
The parameter of oval LM is：Central coordinate of circle (94,0), major axis radius 217, minor axis radius 100,
The parameter of oval NP is：Central coordinate of circle (- 36,54), major axis radius 100, minor axis radius 52,
Bionical curve EF：
(4), after curve LM, NP, EF completes, make curve EF as back-mirror housing outer profile constraint curve, ellipse LM
Boundary progress surface filling is repaired for the open end contour curve of back-mirror housing, the curved surface after filling is subjected to thickening processing,
Thickness is 5mm, and using semiellipse NP as the connecting pin contour curve of back-mirror housing and car body, rearview mirror is stretched to by entity
The agent model of racing car back-mirror housing structure is finally obtained after shell.
2. a kind of biomimetic type low-drag coefficient according to claim 1 matches vehicle rear-view mirror, it is characterised in that：It is described
Back-mirror housing uses three layers of carbon fibre material point is paved to form, and the laying angular arrangements of the fibrous layer from top to bottom are [90/
45/0]。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891144.XA CN106379240B (en) | 2016-10-12 | 2016-10-12 | A kind of biomimetic type low-drag coefficient match vehicle rear-view mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891144.XA CN106379240B (en) | 2016-10-12 | 2016-10-12 | A kind of biomimetic type low-drag coefficient match vehicle rear-view mirror |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106379240A CN106379240A (en) | 2017-02-08 |
| CN106379240B true CN106379240B (en) | 2018-08-31 |
Family
ID=57936325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610891144.XA Expired - Fee Related CN106379240B (en) | 2016-10-12 | 2016-10-12 | A kind of biomimetic type low-drag coefficient match vehicle rear-view mirror |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106379240B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940744A (en) * | 2017-03-10 | 2017-07-11 | 朱兆顺 | Can high-speed moving object, the determination method and device of its contour curve |
| CN106802227B (en) * | 2017-03-28 | 2023-07-21 | 吉林大学 | Bionic drag-reducing and noise-reducing flat plate device for rearview mirror wind tunnel experiment |
| CN108327635A (en) * | 2018-04-11 | 2018-07-27 | 朱玲 | Carbon fiber automobile rearview mirror |
| CN115648950A (en) * | 2022-11-02 | 2023-01-31 | 中南大学 | Bionic device, bionic sliding plate and pantograph |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2253821A (en) * | 1991-03-09 | 1992-09-23 | Alan Charles Cameron | Vehicle wing mirror |
| CN2785950Y (en) * | 2005-04-27 | 2006-06-07 | 上海拓鑫汽车设计开发有限公司 | Bionic rear-view mirror |
| CN201432615Y (en) * | 2009-07-16 | 2010-03-31 | 张国玉 | Water-removed rearview mirror of automobile |
| CN104827970A (en) * | 2015-05-14 | 2015-08-12 | 奇瑞汽车股份有限公司 | Automobile rearview mirror and manufacturing method thereof |
| CN105857190A (en) * | 2016-04-20 | 2016-08-17 | 苏州兴新维碳纤维有限公司 | Carbon fiber rearview mirror and fabrication process thereof |
-
2016
- 2016-10-12 CN CN201610891144.XA patent/CN106379240B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2253821A (en) * | 1991-03-09 | 1992-09-23 | Alan Charles Cameron | Vehicle wing mirror |
| CN2785950Y (en) * | 2005-04-27 | 2006-06-07 | 上海拓鑫汽车设计开发有限公司 | Bionic rear-view mirror |
| CN201432615Y (en) * | 2009-07-16 | 2010-03-31 | 张国玉 | Water-removed rearview mirror of automobile |
| CN104827970A (en) * | 2015-05-14 | 2015-08-12 | 奇瑞汽车股份有限公司 | Automobile rearview mirror and manufacturing method thereof |
| CN105857190A (en) * | 2016-04-20 | 2016-08-17 | 苏州兴新维碳纤维有限公司 | Carbon fiber rearview mirror and fabrication process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106379240A (en) | 2017-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106379240B (en) | A kind of biomimetic type low-drag coefficient match vehicle rear-view mirror | |
| TWD142416S1 (en) | Front fender for motor vehicles | |
| TWD140132S1 (en) | Grille for motor vehicles | |
| CN106815435A (en) | A kind of preparation method of biomimetic type automobile tail fin shell | |
| TWD139232S1 (en) | Wheel for motor vehicles | |
| CA2687857A1 (en) | A preform and a mold stack for producing the preform | |
| CN106394693B (en) | A kind of bionical automobile top cover outer plate with variable curvature characteristic | |
| CN106285901B (en) | A kind of vehicular engine radiator fan based on the exploitation of cat owl wing plumage | |
| CN106335555A (en) | Bionic partition-type engine cover outer plate for sportscar | |
| Du | Research on Bionic Design of Automobile Styling | |
| CN103847953B (en) | Fixed-wing general-purpose aircraft Wing-Tip Sails device | |
| CN207207703U (en) | A kind of automobile window for improving ventilation effect | |
| CN205423504U (en) | Little curvature radius selects flexible axle of shifting | |
| CN209336392U (en) | Automobile wheel hub finishing | |
| TWD107727S (en) | Motor vehicle miniature | |
| CN210526687U (en) | Bionic non-smooth resistance-reducing noise-reducing film adopting mathematical model arrangement | |
| CN202152076U (en) | Concave automotive shell | |
| CN206520548U (en) | A kind of rearview mirror Decorative Cover with decrease of noise functions | |
| CN205706416U (en) | A kind of carbon fiber illuminator | |
| CN219529384U (en) | Wind tunnel blade | |
| CN206217531U (en) | It is applied to bush structure, automotive suspension and the automobile of automotive suspension | |
| KR20210011716A (en) | Bicycle frame with resin coated body | |
| CN200981308Y (en) | Tyre vulcanizing capsule | |
| CN104191910B (en) | A kind of full-steel radial ply agricultural tire | |
| CN2803480Y (en) | Modle airplane propeller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20191012 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |