CN210771923U - Anti-sagging and anti-fog vehicle lamp outer lens and spraying tool clamp thereof - Google Patents
Anti-sagging and anti-fog vehicle lamp outer lens and spraying tool clamp thereof Download PDFInfo
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- CN210771923U CN210771923U CN201921797082.1U CN201921797082U CN210771923U CN 210771923 U CN210771923 U CN 210771923U CN 201921797082 U CN201921797082 U CN 201921797082U CN 210771923 U CN210771923 U CN 210771923U
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- outer lens
- sagging
- car light
- antifog
- spraying
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Abstract
The utility model provides an anti-sagging, antifog outer lens of car light and spraying frock clamp thereof. The applicant deeply analyzes the reasons of sagging of the automobile headlamp from the aspects of materials, structures and the like, improves the anti-fog paint spraying tool clamp from the spraying process, forms a blank area at the upper position of the inner surface of the outer lens of the automobile headlamp by means of a baffle, and forms an anti-fog coating area at other positions. The existence in blank area has avoided the gathering to cause the sagging at the antifog lacquer of the supersaturation steam dissolution at outer lens internal surface top of car light, and antifog coating zone can play fine antifog effect again. The scheme does not need to design complicated demisting structures such as ventilation and drying, does not need to spend large force gas to research and develop and improve the antifogging coating material, and has the advantages of low cost, good effect and the like.
Description
Technical Field
The utility model relates to an automotive lighting and mechanical technical field, concretely relates to outer lens of car light and corresponding spraying frock clamp with prevent sagging, antifog function.
Background
The outer lens of the automobile lamp is a transparent protection structure located on the outermost side of the automobile lamp, and plays multiple roles of light transmission, external environment isolation, protection of parts in a lamp cavity and the like. Lens outside the car light in the use, inside vapor inevitable can enter into the lamp chamber, because there is great difference in the inside and outside temperature of lamp chamber, vapor can be gradually outer lens internal surface condensation become water smoke or drop of water, seriously influences the light transmissivity and the outward appearance of car light.
In order to overcome the problem, the inner surface of the outer lens of the existing car lamp is generally sprayed with an antifogging coating, and common antifogging paints for forming the antifogging coating on the market are hydrophilic materials. Although the antifogging coating can effectively absorb water vapor in the automobile lamp to prevent the water vapor from being condensed into water mist, the antifogging coating on the inner surface of the outer lens is saturated after absorbing a large amount of water vapor along with the prolonging of the service life or the influence of other factors (such as high humidity of the external environment, large temperature difference or reduced tightness of the automobile lamp), and then the antifogging coating can be dissolved and fall off and move downwards along the inner surface of the outer lens under the action of gravity to form permanent tear-shaped sagging. The occurrence of the sagging phenomenon not only causes the antifogging coating to lose the antifogging effect, but also can seriously affect the appearance, the lighting effect and the driving safety of the automobile lamp. The problem of vehicle lamp sagging has become a difficult problem in the automobile lighting industry, and must be solved by thinking.
One solution is to improve an antifogging coating material, but a great breakthrough is not obtained so far, and all the antifogging paints for the outer lenses of the automobile lamps on the market at present basically have the problem of sagging. The Qianluan et al (CN108679576A) can coat nano hydrophobic layer on the inner surface of xenon car lamp to make water vapor spread out uniformly on its surface, and then cooperate with a certain number of heating sheets, air holes, humidity sensors and other devices to perform dynamic detection and adjustment to prevent the inner wall of the car lamp from fogging. But the scheme has complex structure and high cost, and the nano hydrophobic layer inevitably loses efficacy and falls off under the repeated action of high temperature and water vapor, and the sagging phenomenon is only more obvious.
Another solution is to provide a defogging system in a vehicle lamp that has a very limited space, starting from the vehicle lamp structure. The royal red chrysanthemum et al (CN107654982A) designs a complex air inlet and outlet channel and a drying agent in a car lamp to prevent the fog in a lamp cavity from further causing sagging phenomenon, and the similar scheme also comprises a Chinese patent CN108397742A disclosed by DingjunYe et al. The solutions generally have the problems of poor applicability, high cost, complex process and the like, and are difficult to popularize and apply on a large scale. Zhangguobao et al (CN206072915U) effectively solves the problems of vehicle lamp fogging and flowing, flow mark, failure, color change and the like caused by the fogging of the vehicle lamp through two overlapped lenses and a vacuum sealing structure between the lenses. However, the double-layer lens in the method has the problems of light transmittance reduction, low light utilization rate and the like, and is difficult to meet the requirements of automobile lighting regulations. In addition, the double lenses and the intermediate vacuum can greatly increase the manufacturing and production cost of the car lamp, and the long-term reliability and stability of the vacuum are difficult to guarantee.
The utility model discloses a large amount of analysis experiments have been carried out on prior art's basis, through ingenious improvement to minimum cost, simplest structure have solved the inside antifog, the anti-sagging difficult problem of car light, have gained better effect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a special spraying frock clamp of outer lens of car light with prevent sagging, antifog function, this spraying frock clamp include the anchor clamps body and be located the die cavity on the anchor clamps body, die cavity and the outer lens of car light molding phase-match are close to outer lens of car light internal surface top position department and are provided with the separation blade on the die cavity for guarantee this position (the separation blade shelters from the position promptly, corresponds the blank on the outer lens of car light) can not adhere to antifog lacquer when the antifog lacquer of spraying.
Further, at least one cavity is formed in the spraying tool clamp. The preferable scheme is that an even number of cavities are symmetrically arranged.
Further, the separation blade and the anchor clamps body integrated into one piece or detachable are connected (for example joint, screw connection).
Furthermore, the separation blade is long and thin strip-shaped, and the width of two ends of the separation blade is smaller than the width of the middle of the separation blade. This is because the possibility of sagging in the middle of the outer lens of the vehicle lamp is the highest and the most serious, so that the baffle plate needs to be ensured to provide enough shielding for the part, and the outer lens of the vehicle lamp manufactured by the method can have good anti-fog and anti-sagging effects.
Another object of the utility model is to provide an utilize the outer lens of car light that has anti-sagging, antifog function that above-mentioned spraying frock clamp preparation formed, the internal surface of the outer lens of this car light is provided with antifog coating district and blank (because the separation blade exists the region of the antifog lacquer of non-spraying), blank position department (the visual angle when the outer lens mounted state of car light) is leaned on to the outer lens internal surface of car light.
Furthermore, the blank area is slender strip, sets up along car light outer lens internal surface top level, perhaps sets up along car light outer lens internal surface top profile slope.
Furthermore, the width of the two ends of the blank area is smaller than the width of the middle of the blank area.
Further, the outer surface of the outer lens of the car lamp is also provided with a hardening coating (such as UVT-610 hardening paint) in a spraying mode.
Compared with the prior art, the utility model discloses following beneficial effect has: the method changes the traditional prejudice that the outer lens of the car lamp must be completely antifogged, analyzes and clarifies the root cause of the sagging problem, provides a simple and low-cost solution, does not need to design complicated dehumidification structures such as ventilation, drying and heating, does not need to spend a great deal of effort to research and develop and improve antifogging coating materials, basically reserves the prior process and equipment, and therefore, the transformation and upgrading investment is less, and the researched and developed new car lamp product has no sagging problem.
Drawings
Fig. 1 is a schematic structural view of an outer lens of a vehicle lamp with anti-sagging and anti-fogging functions according to the present invention;
fig. 2 is a schematic structural view of the spraying tool clamp used in the present invention.
Detailed Description
In order to make those skilled in the art fully understand the technical solutions and advantages of the present invention, the following description is further provided with reference to specific embodiments.
The tear-shaped sagging phenomenon (located inside the automobile lamp) often appears after the automobile lamp on the market is used for a period of time. The applicant research and development team collects a large number of defective car lamp parts with sagging problems, and discovers that the sagging starting parts are concentrated on the middle upper part of the inner surface of the outer lens through laboratory simulation and defective part disassembly detection. Further compositional analysis of the antifogging paint showed that it contained a large amount of hydrophilic material, in some cases soluble in water.
The fact and the analysis and demonstration are combined to know that the antifogging coating on the inner wall of the outer lens of the automobile lamp continuously absorbs moisture to play an antifogging role in the using process, and the water vapor content inside the lamp cavity is not uniformly distributed due to the design and the using environment, and the water vapor content on the upper part of the lamp cavity is higher as the lamp cavity is closer. The reason is that high temperature is generated after the light source is lightened, so that the temperature in the lamp cavity is increased, the density of water vapor is reduced and gradually gathered on the upper part of the automobile lamp after being heated, the position exceeds the saturation threshold of the anti-fog coating (at the moment, the anti-fog coatings at other parts are not saturated yet), and the anti-fog paint is dissolved by the water vapor to form mixed liquid which flows downwards to form a sagging.
After the reason is clarified, the method only needs to be simply changed on the basis of the original process, and when the antifogging paint is sprayed, a certain area on the upper part of the inner surface of the outer lens is not sprayed (half spraying, as shown in figure 1), so that the industrial problem is thoroughly solved. The reason behind the blank area and the position selection of the blank area are the big highlight and innovation of the utility model, and no people have done similar research before this time, and have not clarified the above mechanism.
The manufacturing method of the outer lens of the automobile lamp with the functions of preventing sagging and preventing fog comprises the following steps: firstly, forming a blank body of the outer lens of the car lamp, and then, placing the blank body in an environment with the temperature of about 125 ℃ for heat treatment for 15min so as to fully eliminate the internal stress of the blank body. Taking out the blank body, removing the edge water gap and the flash, and cleaning the inner surface and the outer surface of the blank body to prepare for spray painting.
Fixing a plurality of outer lens body of car light in antifog spraying frock clamp (as shown in fig. 2) for the separation blade just shelters from the whole upper portion edge of outer lens internal surface of car light (corresponds the blank on the outer lens of car light). Then, the inner surface of the outer lens blank of the automobile lamp is sprayed with the antifogging paint, and an antifogging coating area and a blank area are formed at the same time. And finally spraying hardening paint on the outer surface of the outer lens blank of the automobile lamp to obtain a hardened protective layer.
For fully understanding the utility model discloses improve the outer lens in-service use effect of gained car light after the improvement, assemble the car headlight of the same kind model with its outer lens of traditional car light (the molding is the same, and the internal surface adopts the antifog lacquer of the same material of the full spraying of same spraying technology), carried out the two-chamber experiment of hazing, every group respectively sets up 3 at least test sample with reinforcing result reliability. The specific test process is as follows:
a) respectively placing the lamp installation vehicle at 23 +/-4 ℃ in an 80% +/-5% RH environment for standing for more than or equal to 24 hours;
b) then respectively installing the lamp installation vehicle in the double-temperature box, and strictly controlling the time from taking out of the environment in the step a) to finishing installation not to exceed 5 minutes;
c) raising the temperature at a speed of more than 2 ℃/min to raise the ambient temperature of the lamp body (the rear side) to 80 +/-3 ℃, and controlling the humidity to be 10 +/-5% RH; the temperature of the lampshade (front side) is adjusted to 20 +/-3 ℃ and 75% +/-5% RH; meanwhile, the lampshade (front side) is drenched with rain, and the rain parameters are as follows: the flow rate is 18L/min when the pressure is 3bar, the water temperature is 15 +/-3 ℃, and the rain lasts for 30 minutes. And (3) lightening the high beam and the low beam in the whole process, lightening the other functions according to the set conditions of the specific working logic of the lamp on the vehicle type, and lightening by selecting the condition of the maximum power under the condition of function multiplexing.
d) And respectively taking out the lamp, standing the lamp in a room temperature environment, observing the appearance of the lamp, and recording the fog dissipation time and the dissipation degree.
From the double-cavity fogging experiment result, the automobile headlamp provided with the improved automobile lamp outer lens (semi-antifogging) of the utility model has no water fog in the whole test process, has no sagging phenomenon after the test is finished, and has intact appearance; the inner surface of the automobile headlamp provided with the traditional full-fog-proof automobile lamp outer lens has a very obvious sagging phenomenon, and the illumination effect and the appearance of the headlamp are seriously influenced. From this can confirm, the utility model provides a antifog, anti-sagging effect of semi-antifog car light outer lens is very obvious.
Claims (8)
1. The utility model provides an anti-sagging, antifog outer lens spraying frock clamp of car light, this spraying frock clamp of its characterized in that includes the anchor clamps body and is located the die cavity on the anchor clamps body, die cavity and the outer lens of car light molding phase-match are close to outer lens of car light internal surface top position department and are provided with the separation blade on the die cavity for guarantee that the separation blade shelters from the position and can not adhere to antifog lacquer when the antifog lacquer of spraying.
2. The spray coating tooling fixture of claim 1, wherein: an even number of cavities are symmetrically arranged on the spraying tool clamp.
3. The spray coating tooling fixture of claim 1, wherein: the separation blade is connected with the clamp body in an integrated forming or separable mode.
4. The spray coating tooling fixture of claim 1, wherein: the separation blade is long and thin strip-shaped, and the width of two ends of the separation blade is smaller than the width of the middle of the separation blade.
5. The anti-sagging and anti-fog vehicle lamp outer lens manufactured by the spraying tool clamp of claim 1 is characterized in that: the inner surface of the outer lens of the automobile lamp is provided with an antifogging coating area and a blank area, and the blank area is located at the position, close to the upper position, of the inner surface of the outer lens of the automobile lamp.
6. The vehicle lamp outer lens according to claim 5, wherein: the blank area is elongated strip, sets up along car light outer lens internal surface top level, perhaps sets up along car light outer lens internal surface top profile slope.
7. The vehicle lamp outer lens according to claim 6, wherein: the width of the two ends of the blank area is less than the width of the middle of the blank area.
8. The vehicle lamp outer lens according to claim 5, wherein: the outer surface of the outer lens of the automobile lamp is also provided with a hardening coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921797082.1U CN210771923U (en) | 2019-10-24 | 2019-10-24 | Anti-sagging and anti-fog vehicle lamp outer lens and spraying tool clamp thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921797082.1U CN210771923U (en) | 2019-10-24 | 2019-10-24 | Anti-sagging and anti-fog vehicle lamp outer lens and spraying tool clamp thereof |
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| CN210771923U true CN210771923U (en) | 2020-06-16 |
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| CN201921797082.1U Active CN210771923U (en) | 2019-10-24 | 2019-10-24 | Anti-sagging and anti-fog vehicle lamp outer lens and spraying tool clamp thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433455A (en) * | 2021-12-29 | 2022-05-06 | 湖北孝感华中车灯有限公司 | Antifog spraying method for Y-type vehicle lamp lens |
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2019
- 2019-10-24 CN CN201921797082.1U patent/CN210771923U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433455A (en) * | 2021-12-29 | 2022-05-06 | 湖北孝感华中车灯有限公司 | Antifog spraying method for Y-type vehicle lamp lens |
| CN114433455B (en) * | 2021-12-29 | 2022-09-20 | 湖北孝感华中车灯有限公司 | Antifog spraying method for Y-type vehicle lamp lens |
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