CN203623344U - Front side window rain shield of novel car - Google Patents
Front side window rain shield of novel car Download PDFInfo
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- CN203623344U CN203623344U CN201320875874.2U CN201320875874U CN203623344U CN 203623344 U CN203623344 U CN 203623344U CN 201320875874 U CN201320875874 U CN 201320875874U CN 203623344 U CN203623344 U CN 203623344U
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- front window
- car front
- rain gear
- car
- front side
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Abstract
The utility model discloses a front side window rain shield of a novel car capable of restraining wind vibration noise and strengthening ventilation comfort. The front side window rain shield is made from a transparent resin material and is arranged on the upper edge of an upper frame of the front side window of the car. The front side window rain shield of the novel car is shorter than the upper frame of the front side window of the car, small rough sawteeth are formed on the lower edge of the front side window rain shield of the new car, and are used for disturbing the air current of the front side window rain shield of the novel car, and consuming the energy of the air current, so as to reduce the window vibration noise; furthermore, the length size of the front side window rain shield is less than that of an existing rain shield, so that the wind area can be reduced and the pneumatic resistance can be reduced. The size of the rear edge of the front side window rain shield of the new car can be increased in a vertical direction, so that the wind area can not be increased; in addition, the head positions of a driver and passengers are staggered, so that the uncomfortableness caused by directly blowing the high speed air current to the heads of the human bodies, the ventilating requirements inside the car can be met, and the effects of keeping the faces of the human bodies comfortable and reducing the wind vibration noise after the front side window of the car is opened to ventilated can be improved.
Description
Technical field
The utility model relates to motorcar body design field, especially relates to the car front window rain gear of a kind of low resistance, low noise, enhancing ventilation traveling comfort.
Background technology
In recent years, have benefited from developing rapidly and the continuous improvement of road conditions of China's expressway construction, effective speed of a motor vehicle of automobile improves constantly.Because ventilation, demist in car etc. need, when driving, get used to opening vehicle window.But fine day travels, after vehicle window is opened, high velocity air not only dispels disarrays occupant's hair, and high velocity air also can have influence on human face's traveling comfort that ventilates.Meanwhile, the glass for vehicle window of unlatching belongs to sheet edge protrusion, high velocity air and glassy phase mutual effect, and the wind that produces high strength, the low frequency characteristic noise that shakes, can make passenger produce comparatively strong sense of discomfort, increases people's sense of fatigue.Rainy day travels, if think ventilation, has to install rain gear, and length and the vehicle window upper side frame of current existing rain gear are isometric, rain gear is the circular arc matching with car car window upper side frame curve shape, covers edge on whole car car window, belong to edge protrusion, increased aerodynamic drag.Meanwhile, with the free air diffuser of front windshield glass composition, biplate shape edge protrusion, aggravated the wind noise that shakes.The forward and backward side window structure moulding of motorcar body difference, side window is opened the air flow state difference of rear shape, therefore, need a kind of new mode and device, meeting the ventilation demand while of windowing, do not increase aerodynamic drag, improve ventilation human body face traveling comfort, and can reduce the wind noise that shakes.
Patent documents 1(200580007840.x), announce a kind of visor for automobile of installing on vehicle window frame, mainly announce material, the installation bonding way of rain gear.
Patent documents 2(201220647629.1), announce a kind of telescopic visor, application groove pulls inside and outside visor up and down at diverse location, realizes the adjusting of rain gear width.
Patent documents 3(201320063171.X) announce a kind of novel visor, on visor body, be provided with the ventilation slot matching with automotive window position, the visor body inner side of ventilation slot upper end is fixed with elastic hook by screw, the side fixing with automotive window on visor body is pasted with Acrylic Foam Tape, and this Acrylic Foam Tape is covered on elastic hook.By the reasonable coordination setting of assembly, solve hook and the Acrylic Foam Tape defect of individualism separately, promote the fixed effect of visor body.
Contrast by document, current existing rain gear patent does not all relate to after vehicle window is opened and reduces aerodynamic drag, increases ventilation human body face traveling comfort, reduces the shake problem of noise of air-flow wind, does not especially relate to the problem solving after car front window is opened.Therefore, the applicant develops a kind of car front window rain gear, overcomes above deficiency.
Utility model content
In view of the above-mentioned deficiency of prior art, the applicant is using vehicle aerodynamics relevant knowledge first, the car flow field that certain sedans original car (do not install car front window rain gear) is opened after 5 centimetres of front windows carries out analytical calculation, result of calculation as shown in Figure 1, in Fig. 1, after car front window is opened, air-flow not directly blows in car, but due to air-flow viscosity and inertia, form and bleed in the car front window upper side frame leading portion a region of flowing through, in a distance, it is air blowing in car front window upper side frame b region, and the c position of taking at chaufeur, form complicated eddy current.That is, to open after front window, air-flow is continued forward by force of cohesion and force of inertia, bleeds in car in a district, and b district blows in car more in the wings, and forms turbulence vortex near chaufeur ear is other.For further obtaining the other acoustic response of chaufeur ear, on Flow Field Calculation basis, adopt Fourler transform and log law conversion, ear other monitoring point in chaufeur left and right is set, obtain near the acoustic pressure spectrogram 2 of the left ear of chaufeur.Result of calculation spectrogram shows that the sound pressure level of chaufeur left and right puff of wind passing the ear vibration frequency point is approximate identical in the time that vehicle window is opened 5 centimetres, and peak value reaches 111dB.
Further the car flow field of 5 centimetres of car front window unlatchings is analyzed, open the cabin flow field schematic diagram of vehicle window as shown in Figure 3, after car front window is opened, air-flow flowing for Cavity Flow in crew module, p1 place, window frame edge at car front window exists unsettled shear layer, vortex is come off in this position and along with air-flow together backward flow, in the time striking the glass for vehicle window edge p2 of opening, vortex breakdown, produce a pressure wave of propagating to four sides, pressure wave is in the time transmitting backward and move, repeatedly coming off of inducing swirl, the noise thereby generation wind shakes, therefore research is found the formation of vortex and is come off, be wind shake noise source produce basic reason.
According to above-mentioned analysis, for the wind noise that shakes after reducing vehicle window and opening, consider that noise is a kind of energy, in transmission motion process, there is decay and energy consumption in noise, and the unsettled shear layer turbulence forming at P1 place is relatively little, energy dissipation is few, causes the turbulent flow vorticity at the p2 place that is delivered to close chaufeur ear side larger, therefore noise is stronger.
Research discovery simultaneously, owing to opening after vehicle window, air-flow in-position, is just on sustained height with human body face, and a large amount of disorderly air-flows enter, and dispel and disarray occupant's hair, badly influence human face's ventilation traveling comfort.
For above-mentioned situation, the applicant pays creative work, has carried out large quantitative analysis and test, utility model a kind of car front window rain gear.Play and meet ventilation requirement, improve and open car front window rear venting human body face traveling comfort and reduce the shake effect of noise of wind.
The utility model designed and developed a kind of suppress wind shake noise, strengthen the car front window rain gear of ventilation traveling comfort, employing transparent resin material is made, be arranged on the upper limb of car front window upper side frame, the relative car front window of the length upper side frame of described car front window rain gear is short, on described car front window rain gear lower edge, offer coarse little sawtooth, for upsetting the air-flow through described sedan-chair new car front window rain gear, consume flowed energy, and then reduce the wind noise that shakes.Simultaneously due to car front window rain gear trailing edge in vertical direction size increase, just changed air-flow and flowed into the position in car, the human body face that staggered, and then improved the traveling comfort of chaufeur.
In the utility model, described car front window rain gear leading edge is 15cm ~ 25cm apart from the length of car front window upper side frame and car front window lower frame intersection point.
In the utility model, described little sawtooth is isosceles right triangle, and tooth depth is 7.5mm.
In the utility model, the vertical height of described car front window rain gear trailing edge is 12cm ~ 18cm, car front window rain gear trailing edge in vertical direction size increases, can not increase area exposed to the wind, and the driver and conductor's head position that staggered, directly blows to therefore reduced high velocity air the uncomfortable property that human body head causes.
To sum up, the utility model has been designed and developed a kind of car front window rain gear, car front window rain gear lower edge is designed to continuous sawtooth chip architecture, can effectively smash the layer of cliping and pasting at p1 place shown in accompanying drawing 3, strengthen the turbulence of this position, reduce the vortex breakdown energy of p2 place shown in accompanying drawing 3, reduced the shake effect of noise of wind thereby played.In addition, as shown in Figure 7, according to computational analysis above, car front window upper side frame leading portion near zone is the section of bleeding, even if there is closely spaced existence, in the time running at high speed, raindrop also can not enter in car cabin from this region, so this region does not need to arrange rain gear, the length dimension that is car front window rain gear can be shorter than the size that existing rain keeps off, and has therefore dwindled area exposed to the wind, has reduced aerodynamic drag, also expanded driver and conductor's range of visibility, be conducive to safe driving simultaneously.Car front window rain gear trailing edge in vertical direction size increases, and can not increase area exposed to the wind, and the driver and conductor's head position that staggered, and directly blows to therefore reduced high velocity air the uncomfortable property that human body head causes.
It is little that its length dimension of the utility model is compared existing rain gear size, therefore dwindled area exposed to the wind, reduced aerodynamic drag.Described car front window rain gear trailing edge in vertical direction size increases, can not increase area exposed to the wind, and driver and conductor's head position has staggered, directly blow to therefore reduced high velocity air the uncomfortable property that human body head causes, play and met vehicle interior ventilation requirement, improved and opened car front window rear venting human body face traveling comfort and reduce the shake effect of noise of wind.
Accompanying drawing explanation
Fig. 1 does not install car inner air current flow horizontal sectional view of the present utility model;
Fig. 2 does not install the other acoustic pressure spectrogram of automobile driver ear of the present utility model;
Fig. 3 opens the car cabin flow field schematic diagram after front window;
Fig. 4 installs car inner air current flow horizontal sectional view of the present utility model;
Fig. 5 installs the other voltage-frequency spectrogram of automobile driver ear of the present utility model;
Fig. 6 structural representation of the present utility model;
The mounting structure schematic diagram of Fig. 7 the utility model on car.
In figure: 1. car front window upper side frame, 2. car front window rain gear leading edge, 3. car front window rain gear, 4. car front window rain gear trailing edge, 5. little sawtooth, 6. car front window rain gear lower edge, 7. car front window, 8. car front window lower frame.
The specific embodiment
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
As shown in drawings, a kind of suppress wind shake noise, strengthen the car front window rain gear 3 of ventilation traveling comfort, employing transparent resin material is made, use seccotine to be arranged on edge on car front window upper side frame 1, car front window rain gear 3 relative car front window upper side frames 1 are short, and car front window rain gear leading edge 2 is 15cm apart from the length of car front window upper side frame 1 and car front window lower frame 8 intersection points; On car front window rain gear lower edge 6, offer coarse little sawtooth 5, little sawtooth 5 is isosceles right triangle, and tooth depth is 7.5mm, for upsetting the air-flow through sedan-chair new car front window rain gear 3, consume flowed energy, and then reduce the wind noise that shakes, improve the traveling comfort of chaufeur; The vertical height of car front window rain gear trailing edge 4 is 12cm ~ 18cm, car front window rain gear trailing edge 4 in vertical direction size increases, can not increase area exposed to the wind, and the driver and conductor's head position that staggered, directly blow to therefore reduced high velocity air the uncomfortable property that human body head causes.
Embodiment bis-, is that with the difference of embodiment mono-car front window rain gear leading edge 2 is 20cm apart from the length of car front window upper side frame 1 and car front window lower frame 8 intersection points.
Embodiment tri-, is that with the difference of above-described embodiment car front window rain gear leading edge 2 is 25cm apart from the length of car front window upper side frame 1 and car front window lower frame 8 intersection points.
Embodiment tetra-, is that with the difference of above-described embodiment the vertical height of car front window rain gear trailing edge 4 is 15cm.
Embodiment five, is that with the difference of above-described embodiment the vertical height of car front window rain gear trailing edge 4 is 18cm.
It is little that its length dimension of the utility model is compared existing rain gear size, therefore dwindled area exposed to the wind, reduced aerodynamic drag; Car front window rain gear trailing edge 4 in vertical direction size increases, can not increase area exposed to the wind, and driver and conductor's head position has staggered, directly blow to therefore reduced high velocity air the uncomfortable property that human body head causes, play and met vehicle interior ventilation requirement, improved and opened car front window 7 rear venting human body face traveling comforts and reduce the shake effect of noise of wind.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
- One kind suppress wind shake noise, strengthen the car front window rain gear of ventilation traveling comfort, employing transparent resin material is made, be arranged on the upper limb of car front window upper side frame, it is characterized in that: the relative car front window of the length upper side frame of described car front window rain gear is short, on described car front window rain gear lower edge, offer coarse little sawtooth, for upsetting the air-flow through described sedan-chair new car front window rain gear, consume flowed energy, and then reduce the wind noise that shakes, improve the traveling comfort of chaufeur.
- As claimed in claim 1 a kind of suppress wind shake noise, strengthen the car front window rain gear of ventilation traveling comfort, it is characterized in that: described car front window rain gear leading edge is 15cm ~ 25cm apart from the length of car front window upper side frame and car front window lower frame intersection point.
- As claimed in claim 2 a kind of suppress wind shake noise, strengthen the car front window rain gear of ventilation traveling comfort, it is characterized in that: described car front window rain gear leading edge is 20cm apart from the length of car front window upper side frame and car front window lower frame intersection point.
- As claimed in claim 1 a kind of suppress wind shake noise, strengthen the car front window rain gear of ventilation traveling comfort, it is characterized in that: described little sawtooth is isosceles right triangle, tooth depth is 7.5mm.
- As claimed in claim 1 a kind of suppress wind shake noise, strengthen the car front window rain gear of ventilation traveling comfort, it is characterized in that: the vertical height of described car front window rain gear trailing edge is 12cm ~ 18cm.
- As claimed in claim 5 a kind of suppress wind shake noise, strengthen the car front window rain gear of ventilation traveling comfort, it is characterized in that: the vertical height of described car front window rain gear trailing edge is 15cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875874.2U CN203623344U (en) | 2013-12-30 | 2013-12-30 | Front side window rain shield of novel car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875874.2U CN203623344U (en) | 2013-12-30 | 2013-12-30 | Front side window rain shield of novel car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203623344U true CN203623344U (en) | 2014-06-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320875874.2U Expired - Fee Related CN203623344U (en) | 2013-12-30 | 2013-12-30 | Front side window rain shield of novel car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203623344U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103660886A (en) * | 2013-12-30 | 2014-03-26 | 湖南工业大学 | Novel saloon car front side window rain shelter for strengthening ventilation comfort |
| CN105711382A (en) * | 2016-01-29 | 2016-06-29 | 成都力鑫科技有限公司 | Window visor weakening wind and noise |
-
2013
- 2013-12-30 CN CN201320875874.2U patent/CN203623344U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103660886A (en) * | 2013-12-30 | 2014-03-26 | 湖南工业大学 | Novel saloon car front side window rain shelter for strengthening ventilation comfort |
| CN103660886B (en) * | 2013-12-30 | 2016-08-17 | 湖南工业大学 | A kind of car front window rain gear strengthening ventilation comfort |
| CN105711382A (en) * | 2016-01-29 | 2016-06-29 | 成都力鑫科技有限公司 | Window visor weakening wind and noise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20141230 |
|
| EXPY | Termination of patent right or utility model |