Vehicle lampshade, vehicle lamp and vehicle
By covering the side of the lamp cover away from the vehicle body with a sealing layer, and ensuring that the boundary line of the sealing layer is higher than the lowest point, the problem of PMMA lamp covers cracking due to windshield washer fluid or alcohol liquids is solved, thus improving the lifespan of the lamp cover.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2026-03-13
AI Technical Summary
Existing automotive lamp cover material PMMA is prone to cracking when exposed to windshield washer fluid, especially in the taillight covers of SUV models, resulting in a shortened lifespan.
A sealing layer is applied to the surface of the lamp cover body on the side away from the vehicle body. The boundary line of the sealing layer is higher than its lowest point. The height difference between the boundary line and the lowest point is designed to be greater than a preset threshold to prevent windshield washer fluid or alcohol liquids from contacting the lamp cover body and to prevent cracking.
The design of the sealing layer reduces the risk of the lamp cover absorbing windshield washer fluid or alcohol liquids, thus improving the lifespan of both the lamp cover and the headlight.
Smart Images
Figure CN223992163U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of anti-cracking technology for automotive lamp covers, specifically to an automotive lamp cover, a vehicle lamp, and a vehicle. Background Technology
[0002] With the continuous development and popularization of automotive technology, cars have become an essential part of daily life for more and more families. As a necessary component for vehicle operation, automotive lights provide illumination and warning functions during driving, and their performance directly affects driving safety. As the external structure of automotive lights, the headlight cover not only requires excellent light transmittance to meet the light distribution performance requirements of automotive lights, but also excellent heat resistance, weather resistance, and good mechanical strength to meet the needs of automotive lights subjected to long-term sunlight exposure, rain erosion, and gravel impact.
[0003] To meet the above requirements, most automotive light covers currently use polymethyl methacrylate (PMMA), commonly known as plexiglass, acrylic, or acrylic glass. PMMA is a thermoplastic with low density and light weight. It has excellent weather resistance, high dimensional stability, good processing performance, and significant electrical insulation. It also has high light transmittance (more than 10% higher than ordinary inorganic glass) and UV resistance.
[0004] However, PMMA has poor fluidity and can absorb alcohols and swell. Improper molding or post-processing can generate internal stress, leading to stress-chemical cracking. This is particularly problematic for SUV taillight covers, which are prone to cracking when exposed to windshield washer fluid. When the rear wiper is used, the fluid flows along the cover surface to the edge of the sealant, where it is initially absorbed by the outer edge of the cover, causing cracking. Therefore, a structure that can solve the problem of cracking in automotive taillight covers is urgently needed. Summary of the Invention
[0005] To address the aforementioned technical problems, this application is proposed. Embodiments of this application provide an automotive lamp cover, a vehicle lamp, and a vehicle.
[0006] According to one aspect of this application, a vehicle lamp cover is provided, comprising: a lamp cover body; and a sealing layer covering the surface of the lamp cover body on the side away from the vehicle body; wherein the boundary line height of the sealing layer is higher than the lowest point height of the sealing layer.
[0007] In one embodiment, the parting line of the lampshade body coincides with the boundary line of the sealant layer.
[0008] In one embodiment, the parting line of the lampshade body corresponds to the lowest point of the sealant layer, and the parting line is located within the area covered by the sealant layer.
[0009] In one embodiment, the height difference between the boundary line height of the sealant layer and the lowest point height of the sealant layer is greater than a preset height threshold.
[0010] In one embodiment, the height threshold is greater than or equal to 1 mm.
[0011] According to another aspect of this application, a vehicle lamp is provided, comprising: a vehicle lamp cover as described in any of the preceding claims.
[0012] In one embodiment, the vehicle lamp further includes a housing, one side of which is connected to the vehicle body, and the other side of which is sealed to the vehicle lamp cover.
[0013] In one embodiment, the housing and the vehicle lamp cover are connected by any of the following methods: welding, snap-fit, or bolt connection.
[0014] In one embodiment, the vehicle lights include taillights.
[0015] According to another aspect of this application, a vehicle is provided, including: vehicle lights as described in any of the preceding claims.
[0016] This application provides an automotive lamp cover, a lamp, and a vehicle, including a lamp cover body and a sealing layer. The sealing layer covers the surface of the lamp cover body away from the vehicle body, and the boundary line of the sealing layer is higher than the lowest point of the sealing layer. In other words, by covering the surface of the lamp cover body away from the vehicle body with a sealing layer and setting the boundary line of the sealing layer higher than the lowest point, when windshield washer fluid or alcohol-based liquids flow over the sealing layer on the lamp cover surface, they will converge at the lowest point of the sealing layer and drip off, without reaching the boundary line of the sealing layer. This means that windshield washer fluid or alcohol-based liquids will not come into contact with the lamp cover body from areas outside the boundary line of the sealing layer. Therefore, the sealing layer can be used to prevent liquids from entering the lamp cover body, reducing the risk of the lamp cover body absorbing windshield washer fluid or alcohol-based liquids and cracking, thereby improving the service life of the lamp cover body and the lamp. Attached Figure Description
[0017] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.
[0018] Figure 1 This is a schematic diagram of the structure of a vehicle lamp cover provided in an exemplary embodiment of this application.
[0019] Figure 2This is a schematic diagram of the structure of a vehicle lamp cover provided in another exemplary embodiment of this application.
[0020] Explanation of reference numerals in the attached drawings: 1. Lampshade body; 2. Sealing layer; 3. Housing. Detailed Implementation
[0021] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.
[0022] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0023] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0024] Figure 1 This is a schematic diagram of the structure of a vehicle lamp cover provided in an exemplary embodiment of this application. Figure 2 This is a schematic diagram of the structure of a vehicle lamp cover provided in another exemplary embodiment of this application. For example... Figure 1 and Figure 2 As shown, the vehicle lamp cover includes: a lamp cover body 1 and a sealing layer 2; wherein, the sealing layer 2 covers the surface of the lamp cover body 1 away from the vehicle body, and the height of the boundary line of the sealing layer 2 is higher than the height of the lowest point of the sealing layer 2.
[0025] SUVs and similar vehicles are typically equipped with rear wiper systems. When the rear windshield is dirty, washer fluid is sprayed onto it and the rear wipers clean it, improving the driver's visibility and thus ensuring driving safety. After cleaning the rear windshield, the washer fluid flows down the windshield towards the taillights below. If a large amount of washer fluid is sprayed, it may continue flowing down the taillight housing to its lowest point before dripping or flowing onto the vehicle body below. To protect the headlight housing 1, a sealant layer 2 is applied to its surface. However, the sealant layer 2 is usually positioned at its lowest point, meaning it only covers the lowest point of the headlight housing 1. This means that when the washer fluid flows to the lowest point of the headlight housing 1, it may come into contact with the headlight housing 1 at the boundary of the sealant layer 2. After absorbing the washer fluid, the headlight housing 1 may swell and crack.
[0026] To solve the aforementioned technical problems, this application appropriately adjusts the structure of the lamp cover body 1 and the sealing layer 2, setting the boundary line of the sealing layer 2 (corresponding to point B) higher than the lowest point of the sealing layer 2 (corresponding to point D). Specifically, the boundary line of the sealing layer 2 is set to not be at the lowest point of the lamp cover body 1. In other words, this application extends the boundary line of the sealing layer 2 from the lowest point of the lamp cover body 1 to a position higher than the lowest point of the lamp cover body 1, thereby ensuring that the lowest point of the lamp cover body 1, on the side furthest from the vehicle body, is covered by the sealing layer 2, and the boundary line of the sealing layer 2 is higher than the lowest point of the sealing layer 2 (corresponding to the lowest point of the lamp cover body 1). When windshield washer fluid (such as...) is used... Figure 1 When the liquid C attached to the outer surface of the sealant layer 2 flows to the sealant layer 2, it will flow to the lowest point of the sealant layer 2 and will not reach the boundary line of the sealant layer 2. The lampshade body 1 at the boundary line of the sealant layer 2 will not come into contact with the glass cleaner, so the lampshade body 1 will not crack due to absorbing the glass cleaner, thereby protecting the lampshade body 1 and improving its service life.
[0027] This application provides a vehicle lamp cover, including a lamp cover body 1 and a sealing layer 2. The sealing layer 2 covers the surface of the lamp cover body 1 away from the vehicle body, and the boundary line of the sealing layer 2 is higher than the lowest point of the sealing layer 2. That is, by covering the surface of the lamp cover body 1 away from the vehicle body with a sealing layer 2 and setting the boundary line of the sealing layer 2 to be higher than the lowest point, when windshield washer fluid or alcohol liquids flow over the sealing layer 2 on the lamp cover surface, they will converge to the lowest point of the sealing layer 2 and then drip off, without reaching the boundary line of the sealing layer 2. In other words, windshield washer fluid or alcohol liquids will not come into contact with the lamp cover body 1 from the area outside the boundary line of the sealing layer 2. Thus, the sealing layer 2 can be used to block liquids from entering the lamp cover body 1, reducing the risk of the lamp cover body 1 absorbing windshield washer fluid or alcohol liquids and cracking, thereby improving the service life of the lamp cover body 1 and the vehicle lamp.
[0028] In one embodiment, such as Figure 1 As shown, the parting line of the lampshade body 1 can coincide with the boundary line of the sealant layer 2.
[0029] The parting line (PL line) is a key element in mold design and manufacturing. When the mold is closed, the PL line defines the overall shape and contour of the mold, forming the outer boundary of the plastic part. In this application, the PL line of the lampshade body 1 can coincide with the boundary line of the sealing layer 2, that is, the boundary line of the sealing layer 2 is set at the PL line of the lampshade body 1 (corresponding to point B). At this time, the shape of the lampshade body 1 can be designed to ensure that the lowest point of the lampshade body 1 is located to the left of the PL line of the lampshade body 1. Figure 1 As shown on the left (the side away from the vehicle body), the lowest point of the lamp cover body 1 is wrapped by the sealant layer 2, and the boundary line of the sealant layer 2 and the PL line of the lamp cover body 1 are higher than the lowest point of the lamp cover body 1. This ensures that when the windshield washer fluid flows to the sealant layer 2, it will converge to the lowest point of the sealant layer 2 and will not reach the boundary line of the sealant layer 2 and the PL line of the lamp cover body 1. The lamp cover body 1 at the boundary line of the sealant layer 2 will not come into contact with the windshield washer fluid, so the lamp cover body 1 will not crack due to absorbing windshield washer fluid. This achieves protection for the lamp cover body 1 and improves its service life.
[0030] In one embodiment, such as Figure 2 As shown, the parting line of the lampshade body 1 corresponds to the lowest point of the sealant layer 2, and the parting line is located within the area covered by the sealant layer 2.
[0031] In this application, the PL line of the lampshade body 1 can correspond to the lowest point of the sealing layer 2 (corresponding to the lowest point of the lampshade body 1) (corresponding to point D). That is, the PL line of the lampshade body 1 is the lowest point of the lampshade body 1. At this time, the sealing layer 2 can be extended to the right side of the PL line of the lampshade body 1. Figure 2 The right side shown is the side closest to the vehicle body), and the right boundary line of the sealant layer 2 (corresponding to point B) is higher than the lowest point of the sealant layer 2 (corresponding to the PL line of the lamp cover body 1), thus ensuring that the lowest point of the lamp cover body 1 is wrapped by the sealant layer 2, and the boundary line of the sealant layer 2 is higher than the lowest point of the sealant layer 2, thereby achieving the effect of windshield washer fluid (such as...) Figure 2 When the liquid C attached to the outer surface of the sealant layer 2 flows to the sealant layer 2, it will flow to the lowest point of the sealant layer 2 and will not reach the boundary line of the sealant layer 2. The lampshade body 1 at the boundary line of the sealant layer 2 will not come into contact with the glass cleaner, so the lampshade body 1 will not crack due to absorbing the glass cleaner, thereby protecting the lampshade body 1 and improving its service life.
[0032] In one embodiment, such as Figure 1 As shown, the height difference between the boundary line height of the sealant layer 2 and the lowest point height of the sealant layer 2 is greater than the preset height threshold.
[0033] Because when windshield washer fluid and other liquids flow to the lowest point of the sealant layer 2, the liquid may continue to flow towards the side closer to the vehicle body due to inertia, wind force, and other reasons, in order to ensure that the liquid does not come into contact with the lamp cover body 1, this application sets the height difference between the boundary line height of the sealant layer 2 and the height of the lowest point of the sealant layer 2 to be greater than a preset height threshold, so as to prevent windshield washer fluid and other liquids from flowing to the boundary line of the sealant layer 2, thereby maximizing the protection of the lamp cover body 1 and improving its service life.
[0034] In one embodiment, the height threshold may be greater than or equal to 1 mm.
[0035] Specifically, such as Figure 1 As shown, the height difference A between the boundary line height of the sealant layer 2 and the lowest point height of the sealant layer 2 is greater than or equal to 1 mm. It should be understood that this application can select a specific height threshold according to the needs of the actual application scenario. Specifically, the height threshold can be determined comprehensively based on factors such as the structural shape of the lampshade body 1, as long as the selected height threshold can prevent liquid from flowing to the boundary line of the sealant layer 2. This application does not limit the specific value of the height threshold.
[0036] It should also be understood that this application may further enhance the protection of the lamp cover body 1 by setting the distance between the boundary line of the sealant layer 2 and the lowest point of the sealant layer 2 along the length of the vehicle to a distance greater than a preset distance threshold. This application may select a specific distance threshold according to the needs of the actual application scenario. Specifically, the distance threshold may be determined by comprehensively considering factors such as the structural shape of the lamp cover body 1. As long as the selected distance threshold can prevent liquid from flowing to the boundary line of the sealant layer 2, this application does not limit the specific value of the distance threshold.
[0037] This application also provides a vehicle lamp, including: a vehicle lamp cover as described in any of the above.
[0038] This application provides a vehicle lamp, including a lamp cover body 1 and a sealing layer 2. The sealing layer 2 covers the surface of the lamp cover body 1 away from the vehicle body, and the boundary line of the sealing layer 2 is higher than the lowest point of the sealing layer 2. That is, by covering the surface of the lamp cover body 1 away from the vehicle body with a sealing layer 2 and setting the boundary line of the sealing layer 2 to be higher than the lowest point, when windshield washer fluid or alcohol liquid flows over the sealing layer 2 on the lamp cover surface, it will flow to the lowest point of the sealing layer 2 and then drip down, without reaching the boundary line of the sealing layer 2. In other words, windshield washer fluid or alcohol liquid will not come into contact with the lamp cover body 1 from the area outside the boundary line of the sealing layer 2. Thus, the sealing layer 2 can be used to block liquid from entering the lamp cover body 1, reducing the risk of the lamp cover body 1 absorbing windshield washer fluid or alcohol liquid and cracking, thereby improving the service life of the lamp cover body 1 and the vehicle lamp.
[0039] In one embodiment, such as Figure 1 and Figure 2 As shown, the above-mentioned vehicle light may also include: a housing 3, one side of which is connected to the vehicle body, and the other side of which is sealed to the vehicle lamp cover.
[0040] This application seals the automotive lamp cover and housing 3 together, thereby preventing external impurities from entering the interior of the lamp cover through the gap between the lamp cover and housing 3. This minimizes the risk of damage to the lamp or reduced lighting brightness caused by impurities. The application uses housing 3 to connect the automotive lamp cover and the vehicle body, thus fixing the lamp cover to the vehicle body and achieving proper lamp cover mounting.
[0041] In one embodiment, the housing 3 and the vehicle lamp cover can be connected by any of the following methods: welding, snap-fit, or bolt connection.
[0042] To ensure the stability of the automotive lamp cover, this application can use welding, snap-fit, or bolt connection to achieve a fixed connection between the automotive lamp cover and the housing 3, thereby achieving a fixed connection between the automotive lamp cover and the vehicle body. It should be understood that this application can select the specific connection method between the housing 3 and the automotive lamp cover according to the needs of the actual application scenario, as long as the selected specific connection method can guarantee the connection strength and sealing performance of the housing 3 and the automotive lamp cover. This application does not limit the specific connection method between the housing 3 and the automotive lamp cover.
[0043] In one embodiment, the vehicle lights include taillights.
[0044] Because of the significant distance between the windshield and headlights, windshield washer fluid typically doesn't flow to the headlights. Headlights are less likely to absorb washer fluid than taillights. Therefore, this application primarily targets taillights, especially for SUVs and other vehicles equipped with rear wiper systems. It should be understood that the application location of the provided automotive lamp cover can be chosen according to the specific application scenario. For example, to better protect the headlights, the provided automotive lamp cover can also be applied to the headlights. This application does not limit the application location of the automotive lamp cover.
[0045] This application also provides a vehicle including: vehicle lights as described in any of the above.
[0046] This application provides a vehicle comprising a lamp cover body 1 and a sealing layer 2, wherein the sealing layer 2 covers the surface of the lamp cover body 1 away from the vehicle body, and the boundary line of the sealing layer 2 is higher than the lowest point of the sealing layer 2. In other words, by covering the surface of the lamp cover body 1 away from the vehicle body with a sealing layer 2 and setting the boundary line of the sealing layer 2 to be higher than the lowest point, when windshield washer fluid or alcohol-based liquids flow across the sealing layer 2 on the lamp cover surface, they will converge to the lowest point of the sealing layer 2 and drip off, without reaching the boundary line of the sealing layer 2. This means that windshield washer fluid or alcohol-based liquids will not come into contact with the lamp cover body 1 from areas outside the boundary line of the sealing layer 2. Therefore, the sealing layer 2 can be used to prevent liquid from entering the lamp cover body 1, reducing the risk of the lamp cover body 1 absorbing windshield washer fluid or alcohol-based liquids and cracking, thereby improving the service life of the lamp cover body 1 and the vehicle lamp.
[0047] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.
[0048] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.
[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. It should also be noted that in the apparatus, device, and method of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.
[0050] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.
[0051] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.
Claims
1. A vehicle lamp cover characterized by comprising: The lampshade comprises: a lampshade body; an encapsulation layer covering the surface of the lampshade body away from the vehicle body; wherein the boundary line of the encapsulation layer extends from the lowest point of the lampshade body to a position higher than the lowest point of the lampshade body, and the lowest point of the lampshade body away from the vehicle body is wrapped by the encapsulation layer, the height of the boundary line of the encapsulation layer is higher than the lowest point of the encapsulation layer, and the height difference between the height of the boundary line of the encapsulation layer and the lowest point of the encapsulation layer is greater than a preset height threshold.
2. The vehicle lamp cover according to claim 1, characterized by The parting line of the lampshade body coincides with the boundary line of the encapsulation layer.
3. The vehicle lamp cover according to claim 1, wherein The parting line of the lampshade body corresponds to the lowest point of the encapsulation layer, and the parting line is located in the covered area of the encapsulation layer.
4. The vehicle lamp cover according to claim 1, wherein The height threshold is greater than or equal to 1mm.
5. A vehicle lamp characterized by comprising: The lampshade comprises: The lampshade according to any one of claims 1-4.
6. The vehicle light of claim 5, wherein The vehicle lamp further comprises a shell, one side of the shell is connected to the vehicle body, and the other side of the shell is sealingly connected to the lampshade.
7. The vehicle light of claim 6, wherein The shell and the lampshade are connected in any one of the following ways: welding, clamping, and bolt connection.
8. The vehicle light of claim 5, wherein, The vehicle lamp comprises a tail lamp.
9. A vehicle characterized by comprising: The lampshade comprises: The vehicle lamp according to any one of claims 5-8.