CN2739060Y

CN2739060Y - Anti-weather protective cover with transparent window of baby's carriage

Info

Publication number: CN2739060Y
Application number: CNU019000030U
Authority: CN
Inventors: 赵性范
Original assignee: Total Kids Corp
Current assignee: Total Kids Corp
Priority date: 2001-05-08
Filing date: 2001-11-20
Publication date: 2005-11-09
Anticipated expiration: 2011-11-20
Also published as: KR20020085859A; KR100468418B1; KR200247199Y1

Abstract

The utility model relates to an anti-weather protective cover for a baby's carriage, which is installed on a baby's carriage. The utility model carries a baby during going out. In order to prevent eye strain and vision descending which are possibly generated in a traditional anti-weather protective cover of a baby's carriage, and therefore, the anti-weather protective cover for a baby's carriage of the utility model is characterized in that the anti-weather protective cover for a baby's carriage comprises a main body and a transparent window on the upper part of the front surface of a baby's carriage, wherein, the main body is made of at least one kind of the following materials: ethylene resin, a waterproof textile and PVC. The transparent window has a light transmittance of 85% to 95% and has an absolute refractive index of 1.45 to 1.55. The eyes of a baby in the baby's carriage focuse on the upper part of the front surface of the baby's carriage. The anti-weather protective cover for a baby's carriage of the utility model can prevent the baby from directly contacting with harm environment; meanwhile, the eyes of the baby are led into transparent window from other parts with relative small light transmittance, thereby, the baby can see objects clearly without distortion, and therefore, the anti-weather protective cover for a baby's carriage obviously protect the vision of the baby through decreasing eye strain. The anti-weather protective cover for a baby's carriage also has the advantages of light weight, and easy storage and conveying.

Description

The anti-weather of stroller with transparency window

Technical field

The present invention relates to a kind of anti-weather of stroller that is installed on the stroller (this stroller carries the baby when going out), more particularly, the present invention relates to a kind of anti-weather of stroller of the baby's of protection eyes.

Background technology

The anti-weather of stroller is such structure, thereby it is installed in and prevents on the stroller that the baby is subjected to the injury of the external environment condition of yellow sand, automobile smog, other various floating contamination particles, cool exterior air etc.The anti-weather of stroller comprises transparent material, so baby and its preserver can see outside and inside.The anti-weather of stroller is formed by the thick vinyl sheet of about 0.2-0.5mm, and the vinyl sheet is formed by PVC, PE and polyurethane.Some described materials and thickness are sewn, thereby cover stroller, have therefore formed the anti-weather of stroller.

But, compare with plate glass (85%), usually as the anti-weather of traditional stroller, obviously less on luminous transmittance by the thick vinyl sheet of PVC, PE and the formed 0.2-0.5mm of polyurethane.In addition, produced by roller by the formed PVC of air blowing method, PE, polyurethane etc., therefore the limitation owing to production process has reduced the accuracy rate of thickness and the homogeneity of density, therefore as shown in fig. 1, when light passes through uneven medium, produced the fitfull refraction effect.Come at described material under the situation of the anti-weather of production stroller, according to Snell laws of refraction (nD=sini/sinr=v1/v2=λ 1/ λ 2 by the vinyl sheet; ND: absolute refractive index, i: angle of incidence, v1: the light velocity in medium 1, v2: the light velocity in medium 2), the local different of thickness on these sheets and density have caused the different of refraction angle and the light velocity and wavelength, so local indexes of refraction has changed.When the baby saw object by the anti-weather of stroller, the difference of ratio of refraction can't focus on the image baby, therefore sees that object is an out-of truth.At last, less transmissivity and fitfull refraction effect not only make the baby can not clearly see exterior object, and the image of object can not be focused on the position on baby's retina, therefore see that the warpage of object is very big.

In addition, the anti-weather of traditional stroller has folding easily characteristic, has therefore produced the phenomenon that seems that concavees lens and convex lens intersect.Therefore, produced the phenomenon of so similar aberration: focal length becomes shorter or longer, perhaps observes straight line and has been bent.The focal position that is light is different on each part of the anti-weather of stroller, thereby has for example caused phenomenons such as the distortion of reel shape, barrel distortion, and promptly the image of object is not formed on the flat surface and is formed on the curved surface.Fig. 2 a shows normal image, and Fig. 2 b and 2c show the distortion phenomenon that causes owing to aberration simultaneously.Fig. 2 b shows the distortion of reel shape, and Fig. 2 c shows barrel distortion.

As mentioned above, therefore each part of the anti-weather of traditional stroller has produced image fault because the inhomogeneous diffraction efficiency that caused folding easily and luminous transmittance, density and thickness changes.Therefore, the baby in the stroller sees exterior object because the subject image distortion makes eye fatigue, thereby causes the eyesight reduction.Even baby's protection people knows described deleterious effect, but in fact they still use traditional stroller to prevent weather, because they do not have alternative.

The invention summary

The invention provides the anti-weather of such stroller, this guard shield has kept not only preventing that the baby in the stroller is subjected to the advantage of external environment condition injury, and does not have distortion or diffraction when making the baby see object and prevented that significantly baby's eyesight from descending.

The cutline of accompanying drawing

Fig. 1 shows the irregular refraction phenomenon by the light of inhomogeneous medium.

Fig. 2 a shows normal image, and Fig. 2 b and 2c show because the caused distortion phenomenon of aberration.

Fig. 3 is the transparent view that the stroller of the anti-weather of stroller of the present invention is installed.

Fig. 4 is the anterior enlarged drawing of the part A of Fig. 3.

Fig. 5 and 6 is some such diagrammatic sketch, and they are used for calculating width and the length that stroller of the present invention is prevented the transparency window of weather.

Fig. 7 shows the route by the light of uniform dielectric.

Realize best mode of the present invention

Be installed in the stroller, realize above the anti-weather of stroller of the present invention of purpose be characterised in that the anti-weather of described stroller comprises: main body, this main body are by at least a formation the in the material beneath: ethene resin, waterproof fabric and PVC; And be positioned at the transparency window of the front upper part of stroller, and it has 85 to 95% luminous transmittance and 1.45 to 1.55 absolute refractive index, and the eyes of the baby in the stroller concentrate on this transparency window.

In the anti-weather of stroller of the present invention, the main body of the anti-weather of stroller is made of the selected material that comes out from PVC, PE or polyurethane, and transparency window is formed by PMMA (polymethyl methacrylate) resin or polycarbonate, the luminous transmittance of these materials is with the identical of plate glass (85%) or be better than plate glass, and the element weight of these materials is 1/2 to 1/4 of a plate glass.The PMMA resin has 1.49 ratio of refraction and the luminous transmittance of 92-93%, and polycarbonate has 1.48 absolute refractive index (nD) and the luminous transmittance of 90-93% simultaneously, so compares with plate glass, and weight is littler, luminous transmittance is bigger and ratio of refraction is littler.Therefore, the baby in the stroller can see object by transparency window and can distortion.

On the other hand, method of attachment by ultrasonic waves compress lumps together the body junction of transparency window and the anti-weather of stroller, and this main body is formed by the thick PVC of 0.2-0.5mm, PE or polyurethane usually, so the change of temperature or bump are not easy to make their to throw off.Transparency window can also combine with main body by sewing up.

With reference to accompanying drawing, describe the anti-weather of stroller of the present invention below in detail.

Fig. 3 is the transparent view that the stroller of the anti-weather of stroller of the present invention is installed.Fig. 4 is the anterior enlarged drawing of the part A of Fig. 3.Fig. 5 and 6 is some such diagrammatic sketch, and they are used for calculating width and the length that stroller of the present invention is prevented the transparency window of weather.Fig. 7 shows the route by the light of uniform dielectric.

With reference to Fig. 3 and 4, the anti-weather 10 of stroller of the present invention is used for seeing object and distortion can taking place for the baby, prevent that simultaneously the baby is subjected to the infringement of hostile environment such as foul air, dust, rain, wind, pollen etc., this guard shield 10 comprises the main body 20 and the transparency window 30 of the anti-weather of stroller.Some length by sutured portion 40 combine the vinyl part 22 of fwd vinyl part 21, both sides and the vinyl part 23 at top, thereby formed the main body 20 of the anti-weather of stroller, so stroller 100 can cover by it.Vinyl part 23 each such formation at side vinyl part 22 and top, so that extend into the sidepiece and the top of being longer than stroller 100, and the non-woven fibre of viscosity each be formed on the desired location of extending on the sutured portion.The viscosity non-woven fibre of the extension of the ethene resin part 22 of both sides mutually combines, and the other viscosity non-woven fibre (not shown) on the extension of the viscosity non-woven fibre of the extension of the ethene resin part 23 at top and the ethene resin part that is formed on both sides combines, therefore, they are installed on the stroller.Simultaneously, be formed with and permitted pory drafting apparatus 50 and be arranged on the top of every side vinyl part 22, and a sidepiece that hides the ventilation cover 55 of drafting apparatus 50 is fixed on the sutured portion 40.Viscosity non-woven fibre (not shown) also combines with the inside face of ventilation cover 55, and other non-woven fibre (not shown) also be combined in its corresponding position on.

Here, each the

vinyl part

21,22,23 that forms the main body 20 of the anti-weather of stroller is 0.2 to 0.5mm thick, as to have excellent ductility vinyl material such as PVC, PE or poly-propylhomoserins, and these parts are prevented weather as stroller usually.Outside these vinyls, also can use the waterproof fibre sheet.

Transparency window 30 is formed at the central upper portion place of anterior vinyl part 21, above the most of times of eyes of the baby in the stroller concentrate on.Transparency window 30 has utilized the effect of staring (this effect of staring results among individual month the baby of 5-6), and promptly a kind of reflex: the baby shifts to eyes the direction that makes the baby can be clear that object.According to the distance (approximately 5cm) between the common visual angle (beginning to be approximately 60) of two eyes, two eyes from the center, from two eyes to stroller distance (being approximately 20cm), the distance (being approximately 4cm) at center of fossa axle (fossae axes) and the thickness (being approximately 2.5cm) of eyeball of anti-weather from two eyes to them, formed transparency window 30 provides greater than needed minimum size size in baby's visual range.

With reference to Fig. 5, calculate the most common size of the needed transparency window 30 of baby's eyesight below.Baby's angular distance center usually is approximately 60 degree.Range averaging between two eyes (AB) is 5cm.(M) is approximately 20cm to the distance (preventing the distance of weather from two eyes of baby to stroller) of transparency window 30 from the position.Therefore, the vertical length (OM) from the center (O) of visual range to two eyes is approximately 4.3cm, and angle (AOM) is 30 degree in the shape (OAM) because separate three, and the value of tan30 degree (2.5cm/OM) is approximately 0.578.According to symmetry, OM: ON=AB: CD is 4.3: 24.3=5: CD.Therefore, the horizontal length of transparency window 30 (CD) is approximately 28cm.In addition, because baby's eyeball diameter usually is 2.5cm, as shown in Figure 6,4.3cm (from the center (O) of visual range to the distance of two eyes) is updated in the symmetrical equation can obtains 4.3: 2.5=24.3: GH.Therefore, the vertical length of transparency window 30 (GH) is approximately 15cm.At last, the size of the needed transparency window 30 of baby's visual range should be greater than about 28cm along horizontal direction, and along vertical direction greater than about 15cm.

In addition, transparency window 30 is formed by PMMA resin (index of refraction is 1.49, luminous transmittance be that 92-93%, proportion are 1.2) or polycarbonate (absolute refractive index is 1.48, luminous transmittance be that 90-93%, proportion are 1.2), compare with plate glass (absolute refractive index is 1.5, luminous transmittance be 85%), flatness is identical, and ratio of refraction is better, and has the element weight of the 1/2-1/4 of plate glass.But be not limited to above-mentioned these, but can adopt any material with following characteristic: luminous transmittance is that 1.45-1.55 (identical with plate glass) and proportion are less than 1.2 greater than 90% (being better than plate glass), absolute refractive index.

Here, transparency window 30 comes combination by means of ultrasonic waves compress, thereby forms ultrasonic waves compress part 60, so temperature traverse or bump are not easy to make its to throw off.But, be not limited to above-mentioned these, and also can by sew up make its in conjunction with or wait to connect it by the viscosity non-woven fibre with pulling down.

As top embodiment is described, the anti-weather of stroller of the present invention is provided with transparency window in the front upper (eyes of the baby in the stroller concentrate on this front upper) of the anti-weather of stroller, this transparency window is formed greater than 90% PMMA or polycarbonate by luminous transmittance.With compare by the formed traditional window of plate glass, described transparency window can provide clearer visual range for the baby in the stroller.In addition, described transparency window can keep uniform ratio of refraction, and as shown in fig. 7, because the flatness of big rigidity, it is more even to reach density and thickness.Therefore, can be clear that object more by transparency window, and can distortion.Excellent its ground, when seeing object by transparency window, it is that the common phenomenon of Snell laws of refraction reaches minimum that image parallel moved, thereby can not be felt, therefore when the baby sees object under the situation that does not have the anti-weather of stroller and when seeing object by the anti-weather of stroller, at intraretinal image almost without any difference.When the baby by transparency window internally when object is seen in the outside of the anti-weather of stroller, the baby feels all right picture by the window eyes front in the automobile.In addition, the PMMA of transparency window material or polycarbonate have enough rigidity and keep flatness.

In addition, the anti-weather of stroller of the present invention has the thick transparency window less than 0.5mm, so transparency window prevents that to stroller the overall weight of weather exerts an influence hardly.In addition, transparency window is formed with minimum size, and size that should minimum can provide the baby needed visual range, so other parts are folded to transparency window easily along the edge, therefore keeping it or have no problem when carrying it.

As mentioned above, the anti-weather of stroller of the present invention has prevented the baby directly and harmful environment Contact, from the other parts of light transmission with less, baby's eyes are led simultaneously To in transparency window, thereby can clearly see object and can distortion, so the anti-weather of stroller Guard shield has been protected baby's eyesight significantly by the fatigue that reduces eyes. Stroller is prevented weather Also have such advantage: it gentlier and is easily taken care of and carrying.

Claims

1. the stroller with transparency window is prevented weather, it is characterized in that, the anti-weather of described stroller comprises:

The main body of the anti-weather of one stroller, this main body are by at least a formation the in the material beneath: ethene resin, waterproof fabric and PVC; And

Eyes with baby of 85 to 95% luminous transmittance and 1.45 to 1.55 absolute refractive index, the front upper that is positioned at stroller and stroller are concentrated a transparency window thereon.

2. the anti-weather of stroller with transparency window as claimed in claim 1 is characterized in that described transparency window has width that is approximately 28cm and the length that is approximately 15cm.

3. the anti-weather of stroller with transparency window as claimed in claim 1 is characterized in that described transparency window is formed by the material of PMMA resin or polycarbonate.

4. the anti-weather of stroller with transparency window as claimed in claim 1 is characterized in that described transparency window has the thickness of 0.2-0.5mm.

5. the anti-weather of stroller with transparency window as claimed in claim 1 is characterized in that described transparency window partly is connected on the main body of the anti-weather of described stroller by ultrasonic waves compress.

6. the anti-weather of stroller with transparency window as claimed in claim 1 is characterized in that described transparency window is connected on the main body of the anti-weather of described stroller by sutured portion.

7. the anti-weather of stroller with transparency window as claimed in claim 1 is characterized in that, is connected to described stroller and prevents that the transparency window on the main body of weather is removable.