Window glass, method for manufacturing window glass, and vehicle

Abstract

The invention discloses vehicle window glass, a manufacturing method of the vehicle window glass and a vehicle, and relates to glass, the vehicle window glass comprises laminated glass, and the laminated glass comprises a first glass plate, a laminated layer and a second glass plate which are sequentially stacked in the direction from the interior to the exterior of the vehicle; the first glass plate and the second glass plate are respectively provided with an outer surface facing the outside of the vehicle and an inner surface facing the inside of the vehicle; a plurality of modified microstructures are arranged on the inner surface of the first glass plate and / or the second glass plate, and each modified microstructure comprises a central circle-like structure and an outer ring structure surrounding the central circle-like structure; along the thickness direction of the laminated glass, the ratio of the depth of the central circle-like structure to the thickness of the first glass plate or the second glass plate is less than 1. The modified microstructure is arranged on at least one glass plate of the vehicle window glass, the microstructure and performance of the vehicle window glass are improved, the overall rigidity of the vehicle window glass is reduced, and the continuous bearing capacity of the vehicle window glass after collision impact is reduced.

Description

Technical Field

[0001] This application relates to a type of glass, and more particularly, to a vehicle window glass, a method for manufacturing the vehicle window glass, and a vehicle. Background Technology

[0002] As a component of automobiles, the impact fracture performance of pedestrian protection glass directly affects the severity of pedestrian injuries in accidents. Traditional single-layer pressing processes used to manufacture laminated windshield glass exhibit high rigidity, ensuring the safety of vehicle occupants, but posing a significant risk of head injuries to pedestrians.

[0003] To reduce the severity of pedestrian injuries, the glass needs to be specially treated to minimize the impact intensity and duration of the collision. Summary of the Invention

[0004] The purpose of this application is to provide a vehicle window glass, a method for manufacturing the vehicle window glass, and a vehicle, which can at least solve one of the aforementioned technical problems existing in current vehicle window glass.

[0005] This application provides a vehicle window glass, including laminated glass. Along the direction from the inside of the vehicle to the outside, the laminated glass includes a first glass plate, an interlayer, and a second glass plate stacked sequentially. The first glass plate and the second glass plate each have an outer surface facing outwards and an inner surface facing inwards. A plurality of modified microstructures are disposed on the inner surface of the first glass plate and / or the second glass plate. The modified microstructures include a central circular structure and an outer ring structure surrounding the central circular structure. Along the thickness direction of the laminated glass, the ratio of the depth of the central circular structure to the thickness of the first or second glass plate is less than 1.

[0006] In some embodiments, the diameter of the central circular structure at the inner surface of the first glass plate / second glass plate is 0.1 μm to 10 μm, and / or the outer diameter of the outer ring structure at the inner surface of the first glass plate / second glass plate is 2 μm to 18 μm.

[0007] In some embodiments, the depth of the central circular structure is greater than or equal to the depth of the outer ring structure.

[0008] In some embodiments, the depth of the central circular structure is 50 μm to 2000 μm, and / or the depth of the outer ring structure is 50 μm to 2000 μm.

[0009] In some embodiments, at the same depth position of the first glass plate / second glass plate, the ratio of the diameter of the central circular structure to the outer diameter of the outer ring structure is 0.02~1.

[0010] In some embodiments, the ratio of the depth of the central circular structure to the depth of the outer ring structure is greater than 1 and less than 2.

[0011] In some embodiments, the central circular structure is generally a trapezoidal frustum or a cylindrical structure, and the outer ring structure is generally a trapezoidal frustum or a cylindrical structure.

[0012] In some embodiments, the width of the outer ring structure is 0 to 1 / 8 of the outer diameter of the outer ring structure.

[0013] In some embodiments, the modified microstructure further includes a plurality of dendritic modified extension structures distributed along the depth direction of the periphery of the outer ring structure and extending in various directions.

[0014] In some embodiments, the extension length of the dendritic modified extension structure is 1 μm to 100 μm.

[0015] In some embodiments, the spacing between adjacent modified microstructures is 5 mm to 500 mm.

[0016] In some embodiments, the depth of the central circular structure of the modified microstructure exceeds the depth of the compressive stress layer on the inner surface of the first glass plate and / or the second glass plate.

[0017] In some embodiments, a plurality of the modified microstructures are disposed on the outer surface of the first glass plate and / or the second glass plate.

[0018] In some embodiments, the plurality of modified microstructures are disposed at least in a portion of the visible area of ​​the first glass plate and / or the second glass plate.

[0019] In some embodiments, when multiple modified microstructures are respectively provided on the inner surfaces of the first glass plate and the second glass plate, the modified microstructures on the first glass plate and the modified microstructures on the second glass plate coincide in the thickness direction of the laminated glass.

[0020] In some embodiments, when multiple modified microstructures are respectively provided on the inner surfaces of the first glass plate and the second glass plate, the modified microstructures on the first glass plate and the modified microstructures on the second glass plate are staggered in the thickness direction of the laminated glass.

[0021] In some embodiments, the HIC (Head Injury Index) value of the area with modified microstructure on the window glass is less than 650.

[0022] This application also provides a method for manufacturing vehicle window glass, comprising:

[0023] Provides a first glass plate, a laminated layer, and a second glass plate;

[0024] Multiple modified microstructures are formed on the inner surface of the first glass plate and / or the second glass plate. The modified microstructures include a central circular structure and an outer ring structure surrounding the central circular structure. Along the thickness direction of the first glass plate / second glass plate, the ratio of the depth of the central circular structure to the thickness of the first glass plate / second glass plate is less than 1.

[0025] The first glass plate and the second glass plate are pressed into shape and then laminated with the laminated layer to obtain the car window glass.

[0026] In some embodiments, forming a plurality of modified microstructures on the inner surface of the first glass plate and / or the second glass plate includes: controlling a laser system to use a laser to treat the inner surface of the first glass plate and / or the second glass plate to form a plurality of modified microstructures.

[0027] This application also provides a vehicle, including a body and a window glass as described in any of the above embodiments, wherein the window glass is mounted on the body.

[0028] The vehicle window glass, its manufacturing method, and the vehicle provided in this application embodiment include laminated glass. Along the direction from the inside of the vehicle to the outside, the laminated glass includes a first glass plate, an interlayer, and a second glass plate stacked sequentially. The first and second glass plates each have an outer surface facing outwards and an inner surface facing inwards. A plurality of modified microstructures are provided on the inner surface of the first and / or second glass plates. These modified microstructures include a central circular structure and an outer ring structure surrounding the central circular structure. Along the thickness direction of the laminated glass, the ratio of the depth of the central circular structure to the thickness of the first or second glass plate is less than 1. Thus, at least one glass plate of the vehicle window glass has modified microstructures, achieving modification from one surface to the interior of the glass plate. This improves the microstructure and performance of the vehicle window glass, reduces its overall stiffness, and decreases its ability to withstand impacts after a collision, thereby reducing the degree of injury to pedestrians. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a cross-sectional structural diagram of a vehicle window glass provided in an embodiment of this application.

[0031] Figure 2 This is a cross-sectional structural diagram of a vehicle window glass provided in another embodiment of this application.

[0032] Figure 3a This is a front view schematic diagram of the modified microstructure in one embodiment of this application.

[0033] Figure 3b This is a three-dimensional structural schematic diagram of the modified microstructure in one embodiment of this application.

[0034] Figure 3c This is a three-dimensional structural schematic diagram of the modified microstructure in one embodiment of this application.

[0035] Figure 4 This is a front view of a vehicle window glass provided in an embodiment of this application.

[0036] Figure 5 This is a schematic diagram of the stress distribution along the thickness direction of a single-layer glass.

[0037] Figure 6 This is a cross-sectional structural diagram of a vehicle window glass provided in an embodiment of this application.

[0038] Figure 7a This is a microscopic morphology diagram of a modified microstructure formed on glass in the front view, provided in an embodiment of this application.

[0039] Figure 7b This is a lateral microstructure image of a modified microstructure formed on glass according to an embodiment of this application.

[0040] Figure 8 This is a schematic flowchart of a method for manufacturing vehicle window glass provided in an embodiment of this application. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] Specific embodiments of this application are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of this application can be adopted. It should be understood that the embodiments of this application are not limited in scope. Within the spirit and scope of the appended claims, embodiments of this application include many changes, modifications, and equivalents.

[0043] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0044] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, or components.

[0045] To address the aforementioned problems, embodiments of this application provide a vehicle window glass. Figure 1 This is a cross-sectional structural diagram of a vehicle window glass provided in an embodiment of this application, as shown below. Figure 1 As shown in the embodiment of this application, a vehicle window glass includes laminated glass 100. Along the direction from the inside of the vehicle to the outside, the laminated glass 100 includes a first glass plate 1, an interlayer 2, and a second glass plate 3 stacked sequentially. The first glass plate 1 and the second glass plate 3 each have outer surfaces 1a and 3a facing outwards and inner surfaces 1b and 3b facing inwards. The inner surface 1b of the first glass plate 1 is provided with multiple modified microstructures A (see...). Figure 1 ), and / or multiple modified microstructures A are provided on the inner surface 3b of the second glass plate 3 (see Figure 2 See also Figure 3a and Figure 3b The modified microstructure A includes a central circular-like structure A-1 and an outer ring structure A-2 surrounding the central circular-like structure A-1; see also Figure 1 and Figure 2 Along the thickness direction of the laminated glass 100, the ratio of the depth of the central circular structure A-1 to the thickness of the first glass plate 1 or the second glass plate 3 is less than 1.

[0046] Specifically, the vehicle window glass can be a car windshield; the first glass plate 1 can be the inner glass plate of the vehicle window, and the second glass plate 3 is the outer glass plate of the vehicle window. When the modified microstructure A is provided on the first glass plate 1, the depth of the central circular structure A-1 in the modified microstructure A does not exceed the thickness of the first glass plate 1; when the modified microstructure A is provided on the second glass plate 3, the depth of the central circular structure A-1 in the modified microstructure A does not exceed the thickness of the second glass plate 3.

[0047] The modified microstructure A can be formed by laser dotting, and the modified microstructure A can be arranged in a dispersed dot matrix on the inner surface 1b of the first glass plate 1 or the inner surface 3b of the second glass plate 3. Specifically, the central circular structure A-1 is a central circular hole structure.

[0048] For example, multiple modified microstructures A are distributed in a regular lattice pattern on the inner surface 1b of the first glass plate 1, such as rectangular lattices, hexagonal lattices, equilateral triangles, and ring lattices (see...). Figure 4 Alternatively, multiple modified microstructures A can be distributed in a random lattice pattern on the inner surface 1b of the first glass plate 1 (disordered distribution), but maintaining a uniform overall distribution density on a macroscopic scale; or, multiple modified microstructures A can be distributed in a gradient lattice pattern on the inner surface 1b of the first glass plate 1, meaning that the density of the lattice exhibits a regular variation on the inner surface 1b of the first glass plate 1. For example, in areas requiring key protection (such as the main impact zone for pedestrian heads), the modified microstructures A are more densely distributed, while in secondary areas, the density gradually decreases; or, multiple modified microstructures A can be distributed in a composite lattice pattern on the inner surface 1b of the first glass plate 1, meaning that the above-mentioned multiple lattice forms are combined in one design. For example, a random lattice is used in most areas, but a small, regular, high-density lattice is embedded in the critical stress area to precisely control crack initiation. The distribution of multiple modified microstructures A on the inner surface 3b of the second glass plate 3 is similar and will not be described further here.

[0049] The vehicle window glass provided in this application embodiment has a modified microstructure A on the first glass plate 1 and / or the second glass plate 3, which realizes the modification from the inner surface to the interior of the glass plate, thereby improving the microstructure and performance of the vehicle window glass, reducing the overall stiffness of the vehicle window glass, reducing the continuous bearing capacity of the vehicle window glass after collision impact, and thus reducing the degree of injury to pedestrians.

[0050] In some embodiments, the diameter of the central circular structure A-1 of the modified microstructure A at the inner surface 1b of the first glass plate 1 can be 0.1 μm to 10 μm, and / or the outer ring structure A-2 at the inner surface 1b of the first glass plate 1 can be 2 μm to 18 μm. Specifically, the dimensions of the central circular structure A-1 and the outer ring structure A-2 can balance the expansion linkage between the modified microstructures and the visibility. If the dimensions of the central circular structure A-1 and the outer ring structure A-2 of the modified microstructure A are smaller than the above dimensions, the laser energy will be too concentrated during processing, resulting in a small width of expansion of the modified microstructure depth in all directions, reducing the expansion linkage between the modified microstructures, and causing a larger HIC impact fracture force value. If the dimensions of the central circular structure A-1 and the outer ring structure A-2 of the modified microstructure A are larger than the above dimensions, the laser energy will be more dispersed during processing, the modification effect will decrease, and the width of expansion of the modified microstructure depth in all directions will increase, resulting in poorer visibility (obvious bright spots under light refraction). The dimensions of the modified microstructure A disposed on the inner surface 3b of the second glass plate 3 can be similarly described, and will not be repeated here.

[0051] Furthermore, the diameter of the central circular structure A-1 at the inner surface 1b of the first glass plate 1 can be 1μm to 4μm, for example, 2μm to 3μm; the outer diameter of the outer ring structure A-2 at the inner surface 1b of the first glass plate 1 can be 4μm to 10μm, for example, 5μm to 8μm, specifically 6μm, 7μm, etc. The dimensions of the modified microstructure A disposed on the inner surface 3b of the second glass plate 3 can be similarly determined, and will not be elaborated further here.

[0052] In some embodiments, the depth of the central circular structure A-1 is greater than or equal to the depth of the outer ring structure A-2.

[0053] In some embodiments, the depth of the central circular structure A-1 is 50 μm to 2000 μm, and the depth of the outer ring structure A-2 is 50 μm to 2000 μm. More specifically, the depth of the central circular structure A-1 is 400 μm to 1500 μm, specifically 600 μm to 1000 μm; for example, the depth of the central circular structure A-1 is 700 μm, 800 μm, or 900 μm. The depth of the outer ring structure A-2 is 400 μm to 1500 μm, specifically 500 μm to 800 μm; for example, the depth of the outer ring structure A-2 is 550 μm, 650 μm, or 750 μm.

[0054] like Figure 3b As shown, in some embodiments, at the same depth position of the first glass plate 1 / second glass plate 3, the outer diameter of the outer ring structure A-2 is greater than or equal to the diameter of the central circular structure A-1.

[0055] In some embodiments, at the same depth position of the first glass plate 1 / second glass plate 3, the ratio of the diameter of the central circular structure A-1 to the outer diameter of the outer ring structure A-2 is 0.02 to 1. More specifically, at the same depth position of the first glass plate 1 / second glass plate 3, the ratio of the diameter of the central circular structure A-1 to the outer diameter of the outer ring structure A-2 is 0.1 to 0.8. Preferably, the ratio of the diameter of the central circular structure A-1 to the outer diameter of the outer ring structure A-2 is 0.2 to 0.6, for example, 0.3, 0.4, 0.5, etc.

[0056] In some embodiments, the ratio of the depth of the central circular structure A-1 to the depth of the outer ring structure A-2 is greater than 1 and less than 2. Preferably, it can be 1.2 to 1.8, such as 1.5, 1.6, etc.

[0057] like Figure 3bAs shown, in some embodiments, the central circular structure A-1 is generally a trapezoidal frustum or a cylindrical structure, and the outer ring structure A-2 is generally a trapezoidal frustum or a cylindrical structure.

[0058] In some embodiments, the width of the outer ring structure A-2 is 0 to 1 / 8 of its outer diameter, wherein the width of the outer ring structure A-2 refers to the width between its outer diameter and inner diameter. Further, the width of the outer ring structure A-2 is 1 / 40 to 1 / 12 of its outer diameter, for example, 1 / 30, 1 / 24, 1 / 18, etc.

[0059] like Figure 3c As shown, in some embodiments, the modified microstructure A further includes a plurality of dendritic modified extension structures A-3 distributed along the depth direction of the outer ring structure A-2 and extending in various directions.

[0060] In some embodiments, the extension length of the dendritic modified extension structure A-3 can be 1 μm to 100 μm. More specifically, the extension length of the dendritic modified extension structure A-3 can be 3 μm to 30 μm, preferably 5 μm to 20 μm, such as 8 μm, 12 μm, 16 μm, etc.

[0061] The embodiments of this application do not require all modified microstructures A to have the same size; specifically, the diameter of the central circular structure A-1 of each modified microstructure A can be independently between 0.1μm and 10μm, the outer diameter of the outer ring structure A-2 of each modified microstructure A can be independently between 2μm and 18μm, and so on, and other dimensions are similar.

[0062] In some embodiments, the spacing between adjacent modified microstructures A is 5 mm to 500 mm; preferably, it can be 10 mm to 100 mm, for example, 20 to 80 mm, such as 30 mm, 40 mm, 50 mm, 60 mm, or 70 mm. This application does not require that the spacing between any two adjacent modified microstructures A be equal; the spacing between any two adjacent modified microstructures A can be independently between 5 mm and 500 mm.

[0063] In some embodiments, the diameter, and / or depth, and / or spacing between the central circular structure A-1 and the outer ring structure A-2 of the modified microstructure A can vary with the distribution location. For example, the diameter of the central circular structure A-1 of the modified microstructure A, which is closer to the main impact area of ​​the first glass plate 1, is larger, or the depth is deeper, or the spacing between the modified microstructures A is smaller.

[0064] In some embodiments, when a plurality of modified microstructures A are present on the inner surface 1b of the first glass plate 1, the depth of the central circular structure A-1 of each modified microstructure A exceeds the compressive stress layer depth of the inner surface 1b of the first glass plate 1; when a plurality of modified microstructures B are present on the inner surface 3b of the second glass plate 3, the depth of the central circular structure of each modified microstructure B exceeds the compressive stress layer depth of the inner surface 3b of the second glass plate 3.

[0065] Specifically, Figure 5 This is a schematic diagram of stress distribution along the thickness direction of a single-layer glass pane. Figure 6 This is a schematic diagram of the microstructure of the modified microstructure on a glass substrate. For example... Figure 5 and Figure 6 As shown, in the thickness direction of a single-layer glass, the stress distribution is compressive stress (0.05~0.25 times the glass thickness) - tensile stress (0.5~0.7 times the glass thickness) - compressive stress (0.05~0.25 times the glass thickness). The depth of the modified microstructure exceeds the depth of the single-sided compressive stress layer of the glass, which is beneficial to the stress expansion and release of the glass structure.

[0066] In some embodiments, along the thickness direction of the laminated glass 100, the ratio of the depth of the central circular structure A-1 to the thickness of the first glass plate 1 or the second glass plate 3 is 0.2 to 0.8, preferably 0.3 to 0.7, such as 0.4, 0.5, 0.6, etc.

[0067] In some embodiments, a plurality of the modified microstructures A are also provided on the outer surface 1b of the first glass plate 1 and / or the outer surface 3b of the second glass plate 3.

[0068] In some embodiments, when multiple modified microstructures A are respectively provided on the inner surfaces 1b and 3b of the first glass plate 1 and the second glass plate 3, the modified microstructures A on the first glass plate 1 and the modified microstructures A on the second glass plate 3 coincide in the thickness direction of the laminated glass 100.

[0069] In some embodiments, when multiple modified microstructures A are respectively provided on the inner surfaces 1b and 3b of the first glass plate 1 and the second glass plate 3, the modified microstructures A on the first glass plate 1 and the modified microstructures A on the second glass plate 3 are staggered in the thickness direction of the laminated glass 100.

[0070] In some embodiments, the HIC (Head Injury Index) value of the area with modified microstructure on the window glass is less than 650, for example less than 600, or less than 500.

[0071] In some embodiments, when a plurality of modified microstructures A are provided on the inner surface 1b of the first glass plate 1, the plurality of modified microstructures A are at least provided in a portion of the visible area of ​​the first glass plate 1; when a plurality of modified microstructures A are provided on the inner surface 3b of the second glass plate 3, the plurality of modified microstructures A are at least provided in a portion of the visible area of ​​the second glass plate 3.

[0072] In some embodiments, when a plurality of modified microstructures A are present on the inner surface 1b of the first glass plate 1, each of the modified microstructures A is located in a first region of the first glass plate 1; when a plurality of modified microstructures B are present on the inner surface 3b of the second glass plate 3, each of the modified microstructures B is located in a second region of the second glass plate.

[0073] Specifically, the first region can be an area of ​​the first glass panel 1 that is more likely to be impacted, for example, the first region is the visible area / lower half of the first glass panel 1; the second region can be an area of ​​the second glass panel 3 that is more likely to be impacted, for example, the second region is the visible area / lower half of the second glass panel 3. Alternatively, the first region includes an area of ​​the first glass panel 1 that is more likely to be impacted, for example, the first region includes the visible area / lower half of the first glass panel 1; the second region includes an area of ​​the second glass panel 3 that is more likely to be impacted, for example, the second region includes the visible area / lower half of the second glass panel 3.

[0074] In some embodiments, when a plurality of modified microstructures A are provided on the inner surface 1b of the first glass plate 1, the plurality of modified microstructures A can be distributed in a dispersed lattice pattern across the entire inner surface 1b of the first glass plate 1.

[0075] In some embodiments, when a plurality of modified microstructures A are provided on the inner surface 3b of the second glass plate 3, the plurality of modified microstructures A are distributed in a dispersed lattice form on the entire surface of the inner surface 3b.

[0076] In some embodiments, the modified microstructure A is formed by laser. Specifically, by precisely controlling the laser parameters (power, spot size, scanning speed, etc.) and processing technology, the microstructure and properties of the glass can be improved, the glass stiffness can be reduced, and the glass's ability to withstand impacts after a collision can be decreased, thereby reducing the degree of injury to pedestrians. Figure 7a , Figure 7b These are microscopic morphology images of a modified microstructure formed on glass by laser processing according to embodiments of this application, viewed from the front and from the side.

[0077] Based on the same inventive concept, this application also provides a method for manufacturing vehicle window glass. Figure 8 This is a schematic flowchart illustrating a method for manufacturing vehicle window glass according to an embodiment of this application. Figure 8 As shown, the method includes:

[0078] S1. Provide a first glass plate, an interlayer, and a second glass plate;

[0079] S2. A plurality of modified microstructures are formed on the inner surface of the first glass plate and / or the second glass plate, the modified microstructures including a central circular structure and an outer ring structure surrounding the central circular structure; along the thickness direction of the first glass plate / second glass plate, the ratio of the depth of the central circular structure to the thickness of the first glass plate / second glass plate is less than 1.

[0080] S3. After pressing the first glass plate and the second glass plate into shape, they are laminated with the laminated layer to obtain the car window glass.

[0081] Specifically, the specific structure and distribution of the modified microstructures (if any) on the inner surface of the first glass plate can be found in the description of the foregoing embodiments; the specific structure and distribution of the modified microstructures (if any) on the inner surface of the second glass plate can be found in the description of the specific structure and distribution of the modified microstructures on the first glass plate, and will not be repeated here.

[0082] The vehicle window glass manufacturing method provided in this application involves a laser-modified microstructure that alters the phase composition of the glass surface and interior. While introducing new microcracks, this process dissipates the strain energy of the original main crack within the glass and increases the energy required for its further propagation, effectively suppressing the propagation of the original main crack. Furthermore, the laser-induced breakage of the glass's silicon-oxygen bond network structure reduces the connectivity of the glass network, increasing its flexibility and thus reducing the impact force. Additionally, the surface stress of the glass can offset some of the impact tensile stress, absorbing some impact energy and reducing head impact acceleration. Therefore, the vehicle window glass manufactured using this method can achieve pedestrian protection. Moreover, the laser-modified microstructure effectively suppresses its own crack propagation. In contrast, in the prior art, needle-like modification points can cause cracks to propagate even without pedestrian impact or external impact force, leading to the risk of glass failure.

[0083] In some embodiments, forming a plurality of dispersed modified microstructures on the inner surface of the first glass plate includes: controlling a laser system to scan and mark points on the inner surface of the first glass plate and / or the second glass plate according to a set trajectory, so that a plurality of dispersed modified microstructures are formed on the inner surface of the first glass plate.

[0084] Specifically, the laser system can be controlled to run along a predetermined trajectory by moving the guide rail to process modified microstructures on the glass surface. The non-diffraction depth, i.e., the dotting depth, can be adjusted by controlling the distance between the laser head of the laser system and the glass surface.

[0085] In some embodiments, forming a plurality of modified microstructures on the inner surface of the first glass plate and / or the second glass plate includes: controlling a laser system to use a laser to treat the inner surface of the first glass plate and / or the second glass plate to form a plurality of modified microstructures.

[0086] Specifically, the processing method of the modified microstructure on the second glass plate is similar to that of the processing method of the modified microstructure on the first glass plate in the aforementioned embodiment, and will not be repeated here.

[0087] The entire manufacturing process for the car window glass is as follows:

[0088] Step 1: The glass sheet is cut, bent, and ground, and then cleaned to obtain a clean, impurity-free glass semi-finished product.

[0089] Step 2: The glass semi-finished product is transferred to the laser processing platform.

[0090] Step 3: Turn on the laser system, set the processing parameters, and scan and mark the surface of the glass semi-finished product according to the set processing trajectory to obtain the laser-processed glass semi-finished product.

[0091] Step 4: Press and anneal the laser-treated glass semi-finished product to obtain the shaped glass.

[0092] Step 5: The formed glass is laminated under high pressure to obtain the car window glass.

[0093] After obtaining the vehicle window glass, quality inspection can be carried out on the vehicle window glass, such as appearance, optical and mechanical performance inspection, sampling and simulating human head collision test to ensure that the glass meets pedestrian protection safety standards.

[0094] The following are two specific embodiments of the manufacturing method of the vehicle window glass provided in this application.

[0095] Example 1

[0096] Step 1: Prepare a traditional sodium-calcium-silicon car window glass sheet with a thickness of 2.1C (2.1mm transparent white glass), transfer it to the processing platform and perform alignment and positioning.

[0097] Step 2: Turn on the laser system, input the processing parameters, and perform scanning processing according to the set trajectory.

[0098] Step 3: The laser-treated glass is transferred to a forming furnace and heated to 500℃~650℃. After forming, it is annealed by a fan.

[0099] Step 4: After the glass is formed, it is laminated (inner sheet - PVB - outer sheet) and then hot-pressed to obtain the finished glass.

[0100] Step 5: Conduct quality inspection, ISRA scanning optical performance testing, white light irradiation appearance inspection, and simulated human head impact test on the product glass.

[0101] Example 2

[0102] Step 1: Prepare a semi-finished traditional sodium-calcium-silicon car window glass with a thickness of 1.8C (1.8mm transparent white glass), transfer it to the processing platform and perform alignment and positioning.

[0103] Step 2: Turn on the laser system, input the processing parameters, and perform scanning processing according to the set trajectory.

[0104] Step 3: The laser-treated glass is transferred to a forming furnace and heated to 500℃~650℃. After forming, it is annealed by a fan.

[0105] Step 4: After the glass is formed, it is laminated (inner sheet - PVB - outer sheet) and then hot-pressed to obtain the finished glass.

[0106] Step 5: Conduct quality inspection, ISRA scanning optical performance testing, white light irradiation appearance inspection, and simulated human head impact test on the product glass.

[0107] The method for manufacturing vehicle window glass provided in this application embodiment can achieve different processing depths in the thickness direction of the glass using laser. By combining the setting of laser parameters and processing trajectory, a modified structure can be formed inside the glass, introducing a large number of fine structural stresses, thereby reducing the strength of the glass and ultimately meeting the pedestrian protection standard requirements. It can also effectively reduce surface damage defects of the glass and ensure that the overall optical performance and appearance of the glass are not affected.

[0108] Based on the same inventive concept, this application also provides a vehicle, including: a vehicle body and a window glass as described in any of the above embodiments, wherein the window glass is disposed on the vehicle body.

[0109] Since the vehicle includes the aforementioned window glass, it has the same technical effect as the aforementioned window glass, as can be seen from the description of the above embodiments, and will not be repeated here.

[0110] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The terms "upper," "lower," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0111] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments in this specification. 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 can be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0112] This application uses specific embodiments to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A type of vehicle window glass, characterized in that, The laminated glass, extending from the inside of the vehicle to the outside, comprises a first glass panel, an interlayer, and a second glass panel stacked sequentially. The first and second glass panels each have an outer surface facing outwards and an inner surface facing inwards, respectively. Multiple modified microstructures are provided on the inner surface of the first glass plate and / or the second glass plate. The modified microstructures include a central circular structure and an outer ring structure surrounding the central circular structure. Along the thickness direction of the laminated glass, the ratio of the depth of the central circular structure to the thickness of the first glass plate or the second glass plate is less than 1.

2. The vehicle window glass according to claim 1, characterized in that, The diameter of the central circular structure at the inner surface of the first glass plate / second glass plate is 0.1μm~10μm, and / or the outer diameter of the outer ring structure at the inner surface of the first glass plate / second glass plate is 2μm~18μm.

3. The vehicle window glass according to claim 1, characterized in that, The depth of the central circular structure is greater than or equal to the depth of the outer ring structure.

4. The vehicle window glass according to claim 3, characterized in that, The depth of the central circular structure is 50μm to 2000μm, and / or the depth of the outer ring structure is 50μm to 2000μm.

5. The vehicle window glass according to claim 1, characterized in that, At the same depth position of the first glass plate / second glass plate, the ratio of the diameter of the central circular structure to the outer diameter of the outer ring structure is 0.02~1.

6. The vehicle window glass according to claim 1, characterized in that, The ratio of the depth of the central circular structure to the depth of the outer ring structure is greater than 1 and less than 2.

7. The vehicle window glass according to claim 1, characterized in that, The central circular structure is generally a trapezoidal frustum or a cylindrical structure, and the outer ring structure is generally a trapezoidal frustum or a cylindrical structure.

8. The vehicle window glass according to claim 1, characterized in that, The width of the outer ring structure is 0 to 1 / 8 of the outer diameter of the outer ring structure.

9. The vehicle window glass according to claim 1, characterized in that, The modified microstructure also includes multiple dendritic modified extension structures distributed along the depth direction of the outer ring structure and extending in various directions.

10. The vehicle window glass according to claim 9, characterized in that, The extension length of the dendritic modified extension structure is 1 μm to 100 μm.

11. The vehicle window glass according to claim 1, characterized in that, The spacing between adjacent modified microstructures is 5 mm to 500 mm.

12. The vehicle window glass according to claim 1, characterized in that, The depth of the central circular structure of the modified microstructure exceeds the depth of the compressive stress layer on the inner surface of the first glass plate and / or the second glass plate.

13. The vehicle window glass according to claim 1, characterized in that, The modified microstructures are disposed on the outer surface of the first glass plate and / or the second glass plate.

14. The vehicle window glass according to claim 1, characterized in that, The plurality of modified microstructures are disposed at least in a portion of the visible area of ​​the first glass plate and / or the second glass plate.

15. The vehicle window glass according to claim 1, characterized in that, When multiple modified microstructures are respectively provided on the inner surfaces of the first glass plate and the second glass plate, the modified microstructures on the first glass plate and the modified microstructures on the second glass plate coincide in the thickness direction of the laminated glass.

16. The vehicle window glass according to claim 1, characterized in that, When multiple modified microstructures are respectively provided on the inner surfaces of the first glass plate and the second glass plate, the modified microstructures on the first glass plate and the modified microstructures on the second glass plate are staggered in the thickness direction of the laminated glass.

17. The vehicle window glass according to claim 1, characterized in that, The HIC (Head Injury Index) value of the area with modified microstructure on the vehicle window glass is less than 650.

18. A method for manufacturing vehicle window glass, characterized in that, include: Provides a first glass plate, a laminated layer, and a second glass plate; Multiple modified microstructures are formed on the inner surface of the first glass plate and / or the second glass plate. The modified microstructures include a central circular structure and an outer ring structure surrounding the central circular structure. Along the thickness direction of the first glass plate / second glass plate, the ratio of the depth of the central circular structure to the thickness of the first glass plate / second glass plate is less than 1. The first glass plate and the second glass plate are pressed into shape and then laminated with the laminated layer to obtain the car window glass.

19. The method according to claim 18, characterized in that, The formation of multiple modified microstructures on the inner surface of the first glass plate and / or the second glass plate includes: The laser control system uses laser treatment to process the inner surfaces of the first glass plate and / or the second glass plate to form multiple modified microstructures.

20. A vehicle, characterized in that, Includes a vehicle body and a window glass as described in any one of claims 1 to 17, wherein the window glass is mounted on the vehicle body.

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