CN110053561A - A kind of drag-reduction energy-saving rearview mirror covers - Google Patents
A kind of drag-reduction energy-saving rearview mirror covers Download PDFInfo
- Publication number
- CN110053561A CN110053561A CN201910349971.XA CN201910349971A CN110053561A CN 110053561 A CN110053561 A CN 110053561A CN 201910349971 A CN201910349971 A CN 201910349971A CN 110053561 A CN110053561 A CN 110053561A
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- CN
- China
- Prior art keywords
- demarcation plate
- rearview mirror
- drag
- energy
- saving
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- 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.)
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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
-
- 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
- B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Multimedia (AREA)
- General Engineering & Computer Science (AREA)
- Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
Abstract
The invention discloses a kind of drag-reduction energy-saving rearview mirror covers, including back-mirror housing (1) demarcation plate (2), piezoelectric material (3) and pedestal (4) composition；Back-mirror housing (1) is mounted on vehicle body by pedestal (4)；Demarcation plate (2) is arranged on the front end face of back-mirror housing (1)；A layer of piezo-electric material (3) are respectively provided on the two sides of demarcation plate (2)；The electric energy that piezoelectric material generates is drawn from the internal electrode (5) of pedestal (4) is mounted on, via being transmitted to energy storage device after rectification circuit.The present invention enhances the boundary layer perturbation in rearview mirror flow field, postpones the formation of rearview mirror rear end Disengagement zone, can effectively reduce pressure drag by installing demarcation plate in rearview mirror front end；Energy caused by the pressure difference field of demarcation plate two sides is absorbed using the piezoelectric material and energy recycle device being attached on demarcation plate, can further reduce automobile energy consumption.
Description
Technical field
The present invention relates to a kind of automotive rear-view lens covers, and in particular to a kind of drag-reduction energy-saving rearview mirror covers.
Background technique
As essential component on vehicle body is mounted on, outside rear-view mirror provides the road conditions letter of vehicle periphery for driver
Breath, has vital influence to the driving safety of automobile.Its presence to increase on vehicle body exhibition to prominent structure,
The globality in vehicle body flow field is destroyed, air flows through the boundary layer separation of its surface generation and vortex shedding results in additional shape
Shape resistance, noise and the generation of vibration.For general car, although outside rear-view mirror only occupies the vehicle perspective plane of very little
Product, but the air drag of 2%-7% is increased, for heavy truck, increased air drag is more.In view of outer
Rearview mirror, much larger than area specific gravity shared by its size, finds suitable drag reduction method to reduction automobile to the contribution of air drag
Energy consumption during transportation has great importance.
From the viewpoint of hydrodynamics, the flow field pulsation for inhibiting vortex to peel off and its generate is to reduce rearview mirror resistance and make an uproar
The main means of sound.Publication (106314287 A of CN 104995061 A, CN) is empty using sucking from rearview mirror front end
The method of air is discharged to realize the reducing noise and drag of rearview mirror in gas rear end discharge air and side.Also there is patent from bionical angle
Degree has carried out Rearview Mirror (106379240 A of CN).The present invention by the installation of rearview mirror front end with piezoelectric material every
On the one hand plate is hindered the interaction of downstream two sides Karman vortex street using partition, and then inhibits the formation in tail whirlpool, on the other hand
The vibrational energy that high-speed flow is absorbed using piezoelectric material can be further reduced the noise generated due to turbulence pulsation, thus
Achieve the effect that reducing noise and drag.
Summary of the invention
The purpose of the present invention is to provide a kind of Rearview Mirrors for having both reducing noise and drag and energy recovery function；On the one hand
Demarcation plate using rearview mirror front end arrangement promotes rearview mirror flow field boundary layer perturbation, postpones the formation of its tail portion Disengagement zone, from
And achieve the purpose that reduce air drag.On the other hand vibration energy recovery device is installed on partition, absorbs high-speed flow
Vibrational energy realizes energy regenerating.
A kind of drag-reduction energy-saving rearview mirror covers, including back-mirror housing demarcation plate, piezoelectric material and pedestal composition；Backsight mirror shell
Body is mounted on vehicle body by pedestal；Demarcation plate is arranged on the front end face of back-mirror housing；It is respectively provided on the two sides of demarcation plate
One layer of piezo-electric material；The electric energy that piezoelectric material generates is drawn from the electrode for being mounted on chassis interior, via transmitting after rectification circuit
To energy storage device.When vehicle in the process of moving, will form unsteady flow field at left and right sides of demarcation plate, will lead to the left and right sides
Pressure difference and vibration are generated, the energy that piezoelectric material can generate pressure difference captures, and the energy of acquisition is transmitted by rectification circuit
To energy storage device.In addition, enhancing the boundary layer in rearview mirror flow field under the spiral structure effect that demarcation plate two sides generate
Disturbance, the microturbulence structure for disturbing generation can promote boundary layer to turn to twist from laminar flow to turbulent flow, postpone rear end separation
The formation in area reduces wake flow vortex intensity, can effectively reduce pressure drag and noise.
The number of demarcation plate is also possible to multiple either one, and the number of demarcation plate is in combination with after different types of
Visor is configured.
Further, the number of the demarcation plate is 1, the center of back-mirror housing is arranged in, with back-mirror housing one
It is body formed.
Further, the hollow shell that the back-mirror housing is made of outer housing and inner housing, is arranged on outer housing
There is air intake, the two sides of air intake are provided with demarcation plate.Preferably, can be arranged on the rear end face of back-mirror housing
There are several air outlet slits, projects air from rearview mirror rear end using the airflow channel that inner and outer shell is formed, further enhance pair
The disturbance in rearview mirror boundary layer；
Further, the thickness of the piezoelectric material depends on the number of plies of PVDF polymeric membrane, generally 4-6 layer poly- inclined
Vinyl fluoride PVDF polymeric membrane.
Further, piezoelectric material is pasted on demarcation plate.
Further, when the characteristic width of rearview mirror is indicated with D, the width d of demarcation plate is advisable with 0.05D, demarcation plate
Length L≤0.6D.
Further, in order to obtain enough piezoelectric activity areas, the standoff height H of demarcation plate is slightly above rearview mirror covers
Height h.
The utility model has the advantages that
(1) present invention enhances the boundary layer perturbation in rearview mirror flow field, postpones by installing demarcation plate in rearview mirror front end
The formation of rearview mirror rear end Disengagement zone, can effectively reduce pressure drag.
(2) demarcation plate two sides pressure difference place is absorbed using the piezoelectric material and energy recycle device that are attached on demarcation plate
Energy can further reduce automobile energy consumption.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the schematic view of the front view of the embodiment of the present invention 1；
Fig. 3 is the backsight structural representation of the embodiment of the present invention 1；
Fig. 4 is the schematic diagram in rearview mirror flow field when the present invention does not install demarcation plate；
Fig. 5 is schematic diagram of real 1 demarcation plate of example of the invention to rearview mirror flow；
Fig. 6 is the schematic view of the front view of real example 2 of the invention；
Fig. 7 is the side structure schematic view of real example 2 of the invention；
Fig. 8 is the schematic view of the front view of rearview mirror inner housing in real example 2 of the invention；
Fig. 9 is the backsight structural representation of rearview mirror inner housing in real example 2 of the invention；
Figure 10 is schematic diagram of the demarcation plate in the embodiment of the present invention 2 to rearview mirror flow；
Wherein, 1, back-mirror housing；2, demarcation plate；3, piezoelectric material；4, pedestal；5, electrode；6, air intake；7, empty
Gas outlet；8, energy storage device；9, the cavity that inner and outer shell is formed.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1
It is as shown in Figs. 1-3: a kind of drag-reduction energy-saving rearview mirror covers, including 1 demarcation plate 2 of back-mirror housing, piezoelectric material 3 and bottom
Seat 4 forms；Back-mirror housing 1 is mounted on vehicle body by pedestal 4；Demarcation plate 2 is arranged on the front end face of back-mirror housing 1；
A layer of piezo-electric material 3 is respectively provided on the two sides of demarcation plate 2；The electric energy that piezoelectric material generates is from the electrode being mounted on inside pedestal 4
5 draw, via being transmitted to energy storage device 8 after rectification circuit.The number of demarcation plate 2 is 1, before back-mirror housing 1 is arranged in
The center of end face is integrally formed with back-mirror housing 1.When the characteristic width of rearview mirror is indicated with D, the width d of demarcation plate 2 is
0.05D, length L are no more than 0.6D.Piezoelectric material with a thickness of 5 layers of PVDF polymeric membrane, the standoff height H of demarcation plate answers slightly higher
The H=1.1h in rearview mirror covers height h, this example.
As can be seen that enhancing the boundary in rearview mirror flow field under the spiral structure effect that demarcation plate two sides generate in Fig. 4
Layer disturbance, the microturbulence structure for disturbing generation can promote boundary layer to turn to twist from laminar flow to turbulent flow, postpone rear end point
Formation from area reduces wake flow vortex intensity, can effectively reduce pressure drag and noise.It utilizes simultaneously and is attached to demarcation plate
On piezoelectric material and energy recycle device absorb demarcation plate two sides pressure difference place energy, can further reduce automobile energy
Consumption.
Embodiment 2
It is as shown in Figure 6: a kind of drag-reduction energy-saving rearview mirror covers, including 1 demarcation plate 2 of back-mirror housing, piezoelectric material 3 and pedestal
4 compositions；Back-mirror housing 1 is mounted on vehicle body by pedestal 4；Demarcation plate 2 is arranged on the front end face of back-mirror housing 1；Point
A layer of piezo-electric material 3 is respectively provided on the two sides of partition 2；Back-mirror housing 1 is made of hollow outer housing 1-1 and inner housing 1- 2
Shell is provided with several air outlet slits 7 on the rear end face of back-mirror housing 1, air intake 6 is provided on outer housing 1-1,
The two sides of air intake 6 are provided with demarcation plate 2.The main distinction of the present embodiment and embodiment 1 is this example from rearview mirror
Front end face, that is, windward side introduces high-speed air, projects air from rearview mirror rear end using the airflow channel that inner and outer shell is formed, into
One step enhances the disturbance to rearview mirror boundary layer.Demarcation plate is mounted in 6 two sides of air intake simultaneously, on the one hand increases pressure
On the other hand the area of electric flux recycling is also beneficial to be formed into air inlet streams channel.The main view of rearview mirror inner housing
As shown in Figure 8 and Figure 9 with rearview, the cavity 9 formed using inner and outer shell is guided air-flow to rearview mirror rear end face outlet 7,
Air is projected, to increase flow field disturbance.
Figure 10 is schematic diagram of the embodiment 2 to rearview mirror flow, can be seen from figure from rearview mirror rear end and project sky
Gas further enhances the disturbance to rearview mirror boundary layer, can further decrease pressure drag, simultaneously because 6 liang of air intake
Side is mounted with demarcation plate 2, further increases the area of piezoelectric energy recovery.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (8)
1. a kind of drag-reduction energy-saving rearview mirror covers, which is characterized in that including back-mirror housing (1) demarcation plate (2), piezoelectric material (3)
It is formed with pedestal (4)；Back-mirror housing (1) is mounted on vehicle body by pedestal (4)；Demarcation plate (2) is arranged in back-mirror housing
(1) on front end face；A layer of piezo-electric material (3) are respectively provided on the two sides of demarcation plate (2)；The electric energy that piezoelectric material generates is from installation
It is drawn in the internal electrode (5) of pedestal (4), via being transmitted to energy storage device after rectification circuit.
2. drag-reduction energy-saving rearview mirror covers as described in claim 1, which is characterized in that the number of the demarcation plate (2) is 1,
Center in back-mirror housing (1) is set, is integrally formed with back-mirror housing (1).
3. drag-reduction energy-saving rearview mirror covers as described in claim 1, which is characterized in that the back-mirror housing (1) is by outer housing
The hollow shell of (1-1) and inner housing (1-2) composition, is provided with air intake (6), air intake (6) on outer housing (1-1)
Two sides be provided with demarcation plate (2).
4. drag-reduction energy-saving rearview mirror covers as claimed in claim 3, which is characterized in that on the rear end face of back-mirror housing (1)
It is provided with several air outlet slits (7).
5. drag-reduction energy-saving rearview mirror covers as described in claim 1, which is characterized in that the piezoelectric material (3) be 4-6 layer gather
Vinylidene PVDF polymeric membrane.
6. drag-reduction energy-saving rearview mirror covers as claimed in claim 5, which is characterized in that piezoelectric material (3) is pasted in demarcation plate (2)
On.
7. drag-reduction energy-saving rearview mirror covers as claimed in claim 2 or claim 3, which is characterized in that the characteristic width of rearview mirror is indicated with D
When, the width d of demarcation plate is 0.05D, length L≤0.6D of demarcation plate.
8. such as drag-reduction energy-saving rearview mirror covers as claimed in claim 2 or claim 3, which is characterized in that the standoff height H of demarcation plate is slightly higher
In rearview mirror covers height h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910349971.XA CN110053561B (en) | 2019-04-28 | 2019-04-28 | Energy-conserving rear-view mirror cover of drag reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910349971.XA CN110053561B (en) | 2019-04-28 | 2019-04-28 | Energy-conserving rear-view mirror cover of drag reduction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110053561A true CN110053561A (en) | 2019-07-26 |
| CN110053561B CN110053561B (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910349971.XA Active CN110053561B (en) | 2019-04-28 | 2019-04-28 | Energy-conserving rear-view mirror cover of drag reduction |
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| Country | Link |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0211433A (en) * | 1988-06-28 | 1990-01-16 | Aisin Seiki Co Ltd | Device for removing water drop |
| JPH02246852A (en) * | 1989-03-17 | 1990-10-02 | Aisin Seiki Co Ltd | Water droplet removing device |
| US5132840A (en) * | 1989-01-12 | 1992-07-21 | Aisin Seiki Kabushiki Kaisha | Cleaning apparatus for automotive rear view mirror |
| US5148312A (en) * | 1989-02-09 | 1992-09-15 | Aisin Seiki Kabushiki Kaisha | Cleaning apparatus for removing foreign substances from a surface variously including a curved member, expanding-contracting vibrator means, and spacer means including a through hole or a depressed region |
| CN2628339Y (en) * | 2003-05-28 | 2004-07-28 | 沈江 | Motor vehicle rear viewing mirror with removing rainwater unit |
| EP2301803A1 (en) * | 2009-09-29 | 2011-03-30 | SMR Patents S.à.r.l. | Self substaining rear view mirror |
| CN105245131A (en) * | 2015-11-17 | 2016-01-13 | 江苏理工学院 | Noise piezoelectric power generation device |
| US9701248B2 (en) * | 2010-07-08 | 2017-07-11 | Gentex Corporation | Rearview assembly for a vehicle |
| CN109436104A (en) * | 2018-10-26 | 2019-03-08 | 江苏理工学院 | Automobile tail fin |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2058695B (en) * | 1979-09-14 | 1983-06-29 | Leyland Vehicles | Vehicle exterior mirror |
| GB2468289A (en) * | 2009-03-03 | 2010-09-08 | Nissan Motor Mfg | Vehicle door mirrors |
-
2019
- 2019-04-28 CN CN201910349971.XA patent/CN110053561B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0211433A (en) * | 1988-06-28 | 1990-01-16 | Aisin Seiki Co Ltd | Device for removing water drop |
| US5132840A (en) * | 1989-01-12 | 1992-07-21 | Aisin Seiki Kabushiki Kaisha | Cleaning apparatus for automotive rear view mirror |
| US5148312A (en) * | 1989-02-09 | 1992-09-15 | Aisin Seiki Kabushiki Kaisha | Cleaning apparatus for removing foreign substances from a surface variously including a curved member, expanding-contracting vibrator means, and spacer means including a through hole or a depressed region |
| JPH02246852A (en) * | 1989-03-17 | 1990-10-02 | Aisin Seiki Co Ltd | Water droplet removing device |
| CN2628339Y (en) * | 2003-05-28 | 2004-07-28 | 沈江 | Motor vehicle rear viewing mirror with removing rainwater unit |
| EP2301803A1 (en) * | 2009-09-29 | 2011-03-30 | SMR Patents S.à.r.l. | Self substaining rear view mirror |
| US9701248B2 (en) * | 2010-07-08 | 2017-07-11 | Gentex Corporation | Rearview assembly for a vehicle |
| CN105245131A (en) * | 2015-11-17 | 2016-01-13 | 江苏理工学院 | Noise piezoelectric power generation device |
| CN109436104A (en) * | 2018-10-26 | 2019-03-08 | 江苏理工学院 | Automobile tail fin |
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| Publication number | Publication date |
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| CN110053561B (en) | 2021-05-18 |
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