Vehicle window glass, manufacturing method therefor, and vehicle

Abstract

The present application relates to vehicle window glass, a manufacturing method therefor, and a vehicle. The vehicle window glass comprises laminated glass (10). In a direction from the exterior to the interior of the vehicle, the laminated glass (10) sequentially comprises a first glass pane (11), an interlayer (20), and a second glass pane (12); the interlayer layer (20) is connected between the first glass pane (11) and the second glass pane (12), and the first glass pane (11) and the second glass pane (12) respectively have an outer surface facing the exterior of the vehicle and an inner surface opposite to the outer surface; the laminated glass (10) is provided with a weakened area (103), the weakened area (103) comprises a plurality of modified portions (13), and the first glass pane (11) and / or the second glass pane (12) undergo laser treatment to form the plurality of modified portions (13) arranged at intervals.

Description

Vehicle window glass, manufacturing method thereof, and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to a Chinese patent application filed with the China Patent Office on March 5, 2024, with application number 202410249686.1 and titled “Vehicle Window Glass, Manufacturing Method Thereof, and Vehicle”. The entire contents of the patent application are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of glass technology, and in particular to a vehicle window glass, a manufacturing method thereof, and a vehicle. Background Art

[0004] With the continuous development of the global economy, the number of cars on the road has continued to rise, raising the issue of automobile safety. Pedestrians, cyclists, and other vulnerable road users are particularly vulnerable to injury from collisions with vehicles in traffic accidents. Countries are implementing laws and regulations on pedestrian head protection, including strengthening head protection and restricting leg protection. In vehicle-pedestrian collisions, the head is the most common site of fatal injury for pedestrians. In Japan, a test method has been developed to quantify head injuries. This method assumes that a pedestrian's head collides with a windshield or other object. A dummy (head impactor) simulating an adult's head is launched from a testing machine toward the object. The impact on the head impactor is measured and evaluated as a head injury criterion (HIC). In a head-on collision between a pedestrian and a car, the pedestrian's lower limbs first contact the car's bumper, causing the upper body to rotate, and ultimately the pedestrian's head impacts the hood or windshield. Studies have shown that although secondary ground impacts may also cause injuries, the most serious injuries are still the impact between pedestrians and cars. In order to reduce the head injuries caused by collisions between pedestrians and vehicles, ENCAP, CNCAP, etc. have set the five-star collision HIC 15 A value is defined as <650.

[0005] In the related art, the methods for producing vehicle windshields mainly include self-weight forming and single-piece press forming. Among them, single-piece press forming is widely used due to its advantages such as good surface transition, small fluctuation, fast production frequency and low cost. Its forming process steps include: the single-piece glass plate is heated and softened in a heating furnace through the transmission of ceramic rollers, and then moves to the forming section, and then the single-piece glass plate is pressed into shape by the pressure of the upper punch and the lower die, and finally the single-piece glass plates that have completed the pressing process are placed together and sent to the lamination process for lamination. However, due to the large output, fast production frequency and short annealing time of single-piece press forming, the surface stress of the glass is high and the glass strength is high. It cannot play a good buffering role during collision with pedestrians. The HIC value is usually greater than 1000, and thus it cannot meet the safety index requirements. Summary of the Invention

[0006] According to various embodiments of the present application, the present application provides a vehicle window glass, a method for manufacturing the same, and a vehicle.

[0007] The present invention provides a vehicle window glass, comprising laminated glass. The laminated glass comprises, in order from the outside of the vehicle to the inside of the vehicle, a first glass plate, an intermediate layer, and a second glass plate. The intermediate layer is connected between the first glass plate and the second glass plate. The first glass plate and the second glass plate each have an outer surface facing the outside of the vehicle and an inner surface opposite the outer surface.

[0008] The laminated glass is provided with a weakened area, and the weakened area includes a plurality of modified parts. The first glass plate and / or the second glass plate is formed with the plurality of modified parts arranged at intervals after laser processing.

[0009] In one embodiment, the first glass sheet includes a first surface and a second surface disposed opposite to each other, the second glass sheet includes a third surface and a fourth surface disposed opposite to each other, the intermediate layer is connected to the second surface and the third surface respectively, the first surface is the outer surface of the first glass sheet facing the outside of the vehicle, the second surface is the inner surface of the first glass sheet facing the inside of the vehicle, the third surface is the outer surface of the second glass sheet facing the outside of the vehicle, and the fourth surface is the inner surface of the second glass sheet facing the inside of the vehicle;

[0010] The modified portion extends from the first surface of the first glass plate toward the second surface, and / or

[0011] The modified portion extends from the third surface toward the fourth surface of the second glass plate.

[0012] In one embodiment, along the thickness direction of the laminated glass, the depth of the modified portion is H1, the thickness of the first glass plate or the second glass plate is H2, and 0.2H2≤H1<H2.

[0013] In one embodiment, the modified portion is located on the first surface of the first glass plate, and / or

[0014] The modified portion is located on the third surface of the second glass plate.

[0015] In one embodiment, the modified portion is located inside the first glass sheet and / or the second glass sheet;

[0016] The distance between the modified portion inside the first glass plate and the outer surface of the first glass plate or the distance between the modified portion inside the second glass plate and the outer surface of the second glass plate is set to H3, the thickness of the first glass plate or the second glass plate is set to H2, and 0.2H2≤H3<0.5H2.

[0017] In one embodiment, along a direction parallel to the width of the laminated glass, a distance between two farthest points of a pattern outline formed by the modified portion on the outer surface of the first glass plate and / or the second glass plate is set to D, and D≤0.5 mm.

[0018] In one embodiment, along a direction parallel to the width of the laminated glass, a distance d between two adjacent modified portions on the outer surface of the first glass plate and / or the second glass plate is set to 20 mm ≤ d ≤ 300 mm.

[0019] In one embodiment, the first glass plate and the second glass plate are both provided with a plurality of modified portions arranged at intervals, and the modified portions of the first glass plate and the second glass plate are staggered with respect to each other along the thickness direction of the laminated glass.

[0020] In one embodiment, the first glass plate and the second glass plate are both provided with a plurality of modified portions arranged at intervals, and the modified portions of the first glass plate and the second glass plate overlap with each other along the thickness direction of the laminated glass.

[0021] In one embodiment, both the first glass plate and the second glass plate are provided with a plurality of modified portions arranged at intervals; the modified portions of the first glass plate are located inside the first glass plate, and the modified portions of the second glass plate are located on an outer surface of the second glass plate.

[0022] In one embodiment, only the third surface of the second glass plate is provided with the modified portion, or

[0023] The modified portion is provided only inside the second glass sheet.

[0024] In one embodiment, the vehicle window glass is provided with a light-transmitting area and a shielding area arranged circumferentially around the light-transmitting area, the visible light transmittance of the light-transmitting area is greater than or equal to 70%, and the visible light transmittance of the shielding area is less than or equal to 5%; the weakened area is located in the light-transmitting area.

[0025] In one embodiment, the distance between the outline of the shielding area and the outline of the weakened area is set to S, 30mm≤S≤200mm.

[0026] In one embodiment, the head injury index HIC value of the weakened area is less than 650.

[0027] In one embodiment, the head injury index HIC value of the weakened area is less than or equal to 300, or

[0028] The head injury index HIC value of the weakened area is 150-300.

[0029] In one embodiment, the inner surface of the first glass plate and / or the second glass plate is laser-processed to form a plurality of modified portions spaced apart.

[0030] In one embodiment, a plurality of modified portions are provided on both the outer surface and the inner surface of the first glass plate at intervals, and the modified portions on the outer surface and the inner surface of the first glass plate are staggered with respect to each other along the thickness direction of the first glass plate; and / or

[0031] A plurality of modified portions are provided on both the outer surface and the inner surface of the second glass plate. The modified portions on the outer surface and the inner surface of the second glass plate are staggered with respect to each other along the thickness direction of the second glass plate.

[0032] The present invention also provides a method for manufacturing the above-mentioned vehicle window glass, comprising the following steps:

[0033] Step 1: focusing a laser on the first glass plate and / or the second glass plate to modify the first glass plate and / or the second glass plate to obtain a plurality of modified portions;

[0034] Step 2: Laminating the first glass plate, the second glass plate and the intermediate layer.

[0035] In one embodiment, step 1 includes:

[0036] The first glass plate and / or the second glass plate to be modified are placed on a platform, a laser is located above the first glass plate and / or the second glass plate, and laser light emitted by the laser is focused on the first glass plate and / or the second glass plate through a galvanometer and a field lens, so that a plurality of modified portions are formed on the first glass plate and / or the second glass plate.

[0037] The present invention also provides a vehicle, comprising the above-mentioned vehicle window glass.

[0038] The details of one or more embodiments of the present application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG1 is a schematic structural diagram of a vehicle window glass according to an embodiment of the present application.

[0040] FIG2 is a schematic diagram of the cross-sectional structure of a laminated glass according to an embodiment of the present application.

[0041] FIG3 is a schematic diagram of the cross-sectional structure of a laminated glass according to another embodiment of the present application.

[0042] FIG4 is a schematic diagram of the cross-sectional structure of a laminated glass according to another embodiment of the present application.

[0043] FIG5 is a schematic diagram of a state where a laser is performing a modification process on laminated glass according to an embodiment of the present application.

[0044] FIG6 is a schematic diagram of the exploded structure of the modified laminated glass according to an embodiment of the present application.

[0045] Figure 7 is a schematic diagram of the cross-section of modified laminated glass under a microscope, according to one embodiment of the present application. 1. Window glass; 10. Laminated glass; 101. Transparent area; 102. Shielded area; 103. Weakened area; 11. First glass sheet; 111. First surface; 112. Second surface; 12. Second glass sheet; 121. Third surface; 122. Fourth surface; 13. Modified portion; 131. First modified portion; 132. Second modified portion; 20. Interlayer; 30. Laser. DETAILED DESCRIPTION

[0046] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0047] Referring to Figures 1 to 3, Figure 1 shows a schematic structural diagram of a vehicle window glass according to an embodiment of the present application. Figures 2 and 3 respectively show schematic cross-sectional structures of laminated glass according to two different embodiments of the present application. A vehicle window glass according to an embodiment of the present application is provided, wherein the vehicle window glass 1 comprises a laminated glass 10. From the outside of the vehicle to the inside of the vehicle, the laminated glass 10 comprises a first glass plate 11, an intermediate layer 20, and a second glass plate 12, in sequence. The intermediate layer 20 is connected between the first glass plate 11 and the second glass plate 12. The first glass plate 11 and the second glass plate 12 respectively have an outer surface facing the outside of the vehicle and an inner surface opposite to the outer surface. The laminated glass is provided with a weakened area 103, which comprises a plurality of modified portions 13. The first glass plate 11 and / or the second glass plate 12 are formed with the plurality of modified portions 13 spaced apart after laser treatment. The modified portion 13 can be located on any surface of the first glass plate 11 (as shown in FIG. 2 ) or inside the first glass plate 11 , i.e., spaced apart from both the inner and outer surfaces of the first glass plate 11 . Similarly, the modified portion 13 can be located on any surface of the second glass plate 12 (as shown in FIG. 4 ) or inside the second glass plate 12 (as shown in FIG. 3 ), i.e., spaced apart from both the inner and outer surfaces of the second glass plate 12 .

[0048] It should be noted that the first glass sheet 11 faces the vehicle's exterior, while the second glass sheet 12 faces the vehicle's interior. Specifically, the first glass sheet 11 includes a first surface 111 and a second surface 112 disposed opposite each other, while the second glass sheet 12 includes a third surface 121 and a fourth surface 122 disposed opposite each other. The interlayer 20 is connected to the second surface 112 and the third surface 121, respectively. In this embodiment, the first surface 111 is the exterior surface of the first glass sheet 11 facing the vehicle's exterior, while the second surface 112 is the interior surface of the first glass sheet 11 facing the vehicle's interior. The third surface 121 is the exterior surface of the second glass sheet 12 facing the vehicle's exterior, while the fourth surface 122 is the interior surface of the second glass sheet 12 facing the vehicle's interior.

[0049] In some embodiments, the material of the intermediate layer 20 can be, for example, PVB (polyvinyl butyral) material, PU (poly urethane) material, EVA (ethylene-vinyl acetate copolymer) material or SGP (ionotropic polymer membrane) material.

[0050] In some embodiments, glass sheet 10 includes one or more of soda-lime silicate, aluminosilicate.

[0051] Specifically, after laser processing, the first glass plate 11 is formed with a plurality of first modified portions 131 arranged at intervals, and / or after laser processing, the second glass plate 12 is formed with a plurality of second modified portions 132 arranged at intervals.

[0052] The first modified portion 131 can be formed by laser treatment during the molding process of the first glass sheet 11, or by laser treatment after the molding process. Due to the laser treatment, the strength of the first modified portion 131 is weaker than the strength of the untreated portion of the first glass sheet 11. Similarly, the second modified portion 132 can be formed by laser treatment during the molding process of the second glass sheet 12, or by laser treatment after the molding process. Due to the laser treatment, the strength of the second modified portion 132 is weaker than the strength of the untreated portion of the second glass sheet 12.

[0053] It should be noted that, when the number of modified portions 13 on the first glass plate 11 and / or the second glass plate 12 is greater, it is more conducive to improving the non-uniformity of the laminated glass 10, thereby reducing the strength of the vehicle window glass 1, reducing the HIC value, and thus improving safety; conversely, when the number of modified portions 13 on the first glass plate 11 and / or the second glass plate 12 is reduced, the strength of the vehicle window glass 1 is increased, resulting in an increase in the HIC value and a decrease in safety performance.

[0054] In the aforementioned vehicle window glass 1, the first glass sheet 11 and / or the second glass sheet 12 undergo laser treatment to form a plurality of spaced-apart modified portions 13. This creates non-uniformity in the glass properties, reducing the strength of the vehicle window glass 1, ensuring that the HIC value meets requirements, and thus improving safety. Furthermore, the modified portions 13 are not directly observable, preserving the product appearance of the vehicle window glass 1.

[0055] Referring to Figures 2, 4, and 5, the modified portion 13 extends from the outer surface toward the inner surface of the first glass sheet 11 and / or the second glass sheet 12. Along the thickness direction of the laminated glass 10, the depth of the modified portion 13 is H1, and the thickness of the first glass sheet 11 or the second glass sheet 12 is H2, where 0.2H2≤H1<H2. Preferably, 0.5H2≤H1<H2. When the depth H1 of the modified portion 13 extending from the outer surface toward the inner surface of the first glass sheet 11 and / or the second glass sheet 12 is greater, the strength of the vehicle window glass 1 decreases, the cushioning effect during a pedestrian collision is more significant, and the HIC value decreases. Conversely, when the depth H1 of the modified portion 13 extending from the outer surface toward the inner surface of the first glass sheet 11 and / or the second glass sheet 12 is shallower, the strength of the vehicle window glass 1 increases, the cushioning effect during a pedestrian collision is less significant, and the HIC value increases. In this embodiment, 0.2H2≤H1<H2, so the depth H1 is relatively appropriate, which can achieve a smaller HIC value of the vehicle window glass 1, thereby improving safety performance.

[0056] In some embodiments, H1 includes but is not limited to 0.2H2, 0.3H2, 0.4H2, 0.5H2, 0.6H2, 0.7H2, 0.8H2, 0.9H2, 0.92H2, 0.95H2, 0.97H2, 0.99H2, etc., and can be flexibly adjusted and set according to actual needs.

[0057] In some optional solutions, H1 can also be set to any value less than 0.2H2 according to actual needs. When H1 is set relatively small, the strength of the glass sheet 10 can be reduced accordingly by increasing the number of modified parts 13, so that the HIC value is reduced and meets the requirements.

[0058] Referring again to Figure 2 , in some embodiments, the outer surfaces of both the first glass sheet 11 and the second glass sheet 12 are provided with multiple modified portions 13 spaced apart. That is, multiple modified portions 13 spaced apart are provided on the first surface 111 of the first glass sheet 11 and the third surface 121 of the second glass sheet 12. This allows the number and depth of the modified portions 13 to be controlled and adjusted to reduce the HIC value, thereby meeting safety requirements. Furthermore, compared to providing modified portions 13 on both the first and second surfaces 111 and 112 of the first glass sheet 11 and the third and fourth surfaces 121 and 122 of the second glass sheet 12, providing modified portions 13 only on the first and third surfaces 111 and 121 of the first and second glass sheets 12 improves the processing convenience and production efficiency of the laminated glass 10.

[0059] If the modified portion 13 is provided on the first surface 111 of the first glass sheet 11, the outer surface of the first glass sheet 11 is directly exposed to the external environment, which can easily lead to breakage defects and thus affect the service life of the laminated glass 10. Therefore, referring again to Figure 4 , it is preferred that the modified portion 13 be provided only on the third surface 121 of the second glass sheet 12. In this way, only the second glass sheet 12 is modified to reduce its strength. When combined with another unmodified glass sheet, the overall strength of the resulting vehicle window glass 1 is correspondingly lowered, thus achieving a HIC value that meets the requirements and improving safety.

[0060] In some embodiments, the modified portion 13 is located within the first glass sheet 11 and / or the second glass sheet 12. This prevents the modified portion 13 from direct contact with the external environment, which could easily lead to breakage defects, thereby relatively extending the service life of the laminated glass 10. Furthermore, the modified portion 13 is located in a tensile stress layer, which facilitates crack propagation in the event of a pedestrian collision, thereby reducing the glass's strength. Furthermore, the distance between the modified portion within the first glass sheet 11 and the outer surface of the first glass sheet 11, or the distance between the modified portion within the second glass sheet 12 and the outer surface of the second glass sheet 12, is set to H3. The thickness of the first glass sheet 11 or the second glass sheet 12 is set to H2, where 0.2H2 ≤ H3 < 0.5H2. This distance H3 is relatively appropriate, achieving a low HIC value for the vehicle window glass 1, thereby improving safety performance.

[0061] In some embodiments, H3 includes but is not limited to 0.2H2, 0.3H2, 0.4H2, 0.5H2, etc., and can be flexibly adjusted and set according to actual needs.

[0062] Referring to Figure 3 , the modified portion 13 is preferably provided only within the interior of the second glass sheet 12. This modification treatment reduces the strength of the second glass sheet 12 alone. When combined with another unmodified glass sheet, the overall strength of the resulting vehicle window glass 1 is correspondingly lower, achieving a HIC value that meets the required standards and improving safety. This is because the second glass sheet 12 serves as the inner glass sheet, and the modified portion 13 is located within the interior of the second glass sheet 12. This prevents direct contact between the modified portion 13 and the external environment, which could easily lead to breakage defects, thereby relatively extending the service life of the laminated glass 10. Furthermore, the modified portion 13 is located within the tensile stress layer, which facilitates crack propagation in the event of a pedestrian collision, thereby reducing the glass's strength.

[0063] Referring to Figure 2, in some embodiments, the first and second glass sheets 11, 12 are each provided with multiple modified portions 13 spaced apart. Along the thickness direction X of the laminated glass 10, the modified portions 13 on the first and second glass sheets 11, 12 are offset from each other. Specifically, multiple first modified portions 131 are provided on the first surface 111 of the first glass sheet 11, and multiple second modified portions 132 are provided on the third surface 121 of the second glass sheet 12. Along the thickness direction X of the laminated glass 10, the first modified portions 131 and the second modified portions 132 are offset from each other. This ensures a sufficiently low HIC, thus meeting safety requirements. Furthermore, a plane perpendicular to the direction X is selected as a reference plane, and the orthographic projections of the modified portions 13 on the window glass 1 are arranged at equal intervals. This ensures relatively uniform strength across all portions of the window glass 1, further enhancing safety.

[0064] In some embodiments, both the first glass sheet 11 and the second glass sheet 12 are provided with multiple modified portions 13 spaced apart from each other. Along the thickness direction X of the laminated glass 10, the modified portions 13 on the first and second glass sheets 11, 12 overlap. Specifically, multiple first modified portions 131 are provided on the first surface 111 of the first glass sheet 11, and multiple second modified portions 132 are provided on the third surface 121 of the second glass sheet 12. Along the thickness direction X of the laminated glass 10, the first modified portions 131 and the second modified portions 132 overlap. This minimizes the HIC sufficiently to meet safety requirements. Furthermore, a plane perpendicular to the direction X is selected as a reference plane, and the orthographic projections of the modified portions 13 on the vehicle window glass 1 are arranged at equal intervals. This ensures relatively uniform strength across all areas of the vehicle window glass 1, further enhancing safety.

[0065] In some embodiments, both the first glass sheet 11 and the second glass sheet 12 are provided with a plurality of modified portions 13 arranged at intervals. Specifically, the first glass sheet 11 is configured as the outer glass sheet, and the modified portions 13 of the first glass sheet 11 are located within the first glass sheet 11. As such, since the first glass sheet 11 is configured as the outer glass sheet, the outer surface of the first glass sheet 11 is directly exposed. Positioning the modified portions 13 within the first glass sheet 11 prevents direct contact between the modified portions 13 and the external environment, which could easily lead to breakage defects, thereby relatively extending the service life of the first glass sheet 11. Furthermore, the modified portions 13 are located in a tensile stress layer, which facilitates crack propagation in the event of a pedestrian collision, thereby reducing the strength of the glass. Furthermore, the second glass sheet 12 is correspondingly configured as the inner glass sheet, and the modified portions 13 of the second glass sheet 12, for example, located on the outer surface of the second glass sheet 12, also reduces the strength of the glass.

[0066] In some embodiments, the inner surfaces of the first glass sheet 11 and / or the second glass sheet 12 are laser-processed to form a plurality of modified portions 13 spaced apart. That is, the plurality of first modified portions 131 are not limited to being arranged on the first surface 111 as in the above embodiment; they can also be arranged on the second surface 112. Similarly, the plurality of second modified portions 132 are not limited to being arranged on the third surface 121 as in the above embodiment; they can also be arranged on the fourth surface 122. Specifically, referring to FIG. 2 , the first modified portions 131 are provided on both the first surface 111 and the second surface 112 of the first glass sheet 11, and / or the second modified portions 132 are provided on both the third surface 121 and the fourth surface 122 of the second glass sheet 12.

[0067] In some embodiments, a plurality of modified portions 13 are provided on both the outer and inner surfaces of the first glass sheet 11 at intervals, and the modified portions 13 on the outer and inner surfaces of the first glass sheet 11 are offset from one another along the thickness direction of the first glass sheet 11; and / or a plurality of modified portions 13 are provided on both the outer and inner surfaces of the second glass sheet 12 at intervals, and the modified portions 13 on the outer and inner surfaces of the second glass sheet 12 are offset from one another along the thickness direction of the second glass sheet 12. Specifically, the first modified portions 131 on the first surface 111 and the second surface 112 of the first glass sheet 11 are offset from one another along a direction perpendicular to the thickness direction X of the laminated glass 10, and / or the second modified portions 132 on the third surface 121 and the fourth surface 122 of the second glass sheet 12 are offset from one another along the thickness direction X perpendicular to the thickness direction X of the laminated glass 10. In this way, the strength of various parts of the first glass plate 11 and / or the second glass plate 12 can be made relatively uniform, which can further improve safety and prevent the laminated glass 10 from being penetrated and causing failure defects due to the modified portions 13 on the outer and inner surfaces of the first glass plate 11 and / or the second glass plate being aligned with each other in the direction X perpendicular to the thickness of the laminated glass 10.

[0068] Referring to Figure 1 , in some embodiments, the distance between the two furthest points of the pattern outline formed by the modified portion 13 on the outer surface of the first glass sheet 11 and / or the second glass sheet 12, parallel to the width of the laminated glass 10, is set to D, where D ≤ 0.5 mm. Specifically, D includes, but is not limited to, 0.5 mm, 0.4 mm, 0.3 mm, 0.2 mm, and 0.1 mm. This allows the pattern outline formed by the modified portion 13 on the laminated glass 10 to be sufficiently small to be unobservable, thereby improving the appearance of the vehicle window glass 1.

[0069] It should be noted that the pattern outline includes, but is not limited to, regular shapes such as circles, ellipses, polygons, and other irregular shapes. Polygons include triangles, quadrilaterals, pentagons, and the like. In this embodiment, the pattern outline is specifically a circle, and the distance D between the farthest two points of the pattern outline is the diameter.

[0070] In some embodiments, D can also be set to any value greater than 0.5 mm and less than or equal to 3 mm according to actual needs.

[0071] In some embodiments, D may also be set to be greater than 3 mm according to actual needs.

[0072] Referring to FIG. 1 , in some embodiments, modified portions 13 are arranged in an array within the light-transmitting area 101 of the vehicle window glass 1 , more specifically within a weakened area 103 within the light-transmitting area 101 . The size and shape of the weakened area 103 can be flexibly adjusted and configured based on actual needs to meet user requirements. When multiple modified portions 13 are arranged in an array within the weakened area 103 , the strength of each portion of the weakened area 103 can be lower than that of other portions of the light-transmitting area 101 . This means that the HIC value of the weakened area 103 meets the requirements, providing a cushioning effect during an impact and providing a higher level of safety.

[0073] Among them, after research, it was found that when the distance d between two adjacent modified parts 13 is less than 20 mm, it is easy to be observed and affect the appearance performance of the vehicle window glass 1; when the distance d between two adjacent modified parts 13 is greater than 300 mm, it is not possible to effectively reduce the strength of the vehicle window glass 1.

[0074] In some embodiments, the spacing d between two adjacent modified portions 13 is 20 mm to 300 mm. Specifically, the spacing d is, for example, 20 mm, 50 mm, 100 mm, 150 mm, 200 mm, 250 mm, 300 mm, etc. Thus, on the one hand, the spacing d between two adjacent modified portions 13 is sufficiently large so that the modified portions 13 are not easily visible and thus affect the appearance and performance of the vehicle window glass 1; on the other hand, the spacing d between two adjacent modified portions 13 is not too large, that is, the modified portions 13 are arranged sufficiently densely, thereby effectively reducing the strength of the vehicle window glass 1 and ensuring that the HIC value meets the requirements.

[0075] In some embodiments, the spacing d is flexibly adjusted and set to any value less than 20 mm and greater than 300 mm according to actual needs.

[0076] In some embodiments, the vehicle window glass 1 is provided with a light-transmitting area 101 and a shielding area 102 arranged circumferentially around the light-transmitting area 101. The visible light transmittance of the light-transmitting area 101 is greater than or equal to 70%, and the visible light transmittance of the shielding area 102 is less than or equal to 5%. Each modified portion 13 is arranged in the light-transmitting area 101. The light-transmitting area 101 is also a perspective area, through which the occupants of the vehicle can observe the environment outside the vehicle. Since each modified portion 13 is arranged in the light-transmitting area 101, the strength of the light-transmitting area 101 is reduced, that is, the HIC value of the light-transmitting area 101 meets the requirements, plays a buffering role during the collision, and has higher safety. In addition, the shielding area 102 is also the black border area, which plays the role of shielding, protection, and improving the overall aesthetics. Since the modified portion 13 is not arranged in the shielding area 102, it can avoid the appearance change of the shielding area 102 caused by being arranged in the shielding area 102.

[0077] In some embodiments, the visible light transmittance of the shielding area 102 is less than or equal to 3%, more preferably less than or equal to 1%, or even equal to zero, i.e., completely opaque. Specifically, the shielding area 102 includes, but is not limited to, a dark ink layer. The first surface 111 is the surface of the vehicle window glass facing the exterior, and the fourth surface 122 is the surface of the vehicle window glass facing the interior. Ceramic ink or UV ink is printed on the second surface 112 via a process such as screen printing or inkjet printing. After curing or high-temperature sintering, a dark ink layer is formed. The dark ink layer surrounds the peripheral edge of the second surface 112. It is understood that the dark ink layer may be located only on the third surface 121, only on the fourth surface 122, on both the second and fourth surfaces 112, on both the second and third surfaces 121, on both the third and fourth surfaces 122, or on all three surfaces 112, 121, and 122.

[0078] The surface stress at the boundary between the shielding area 102 and the light-transmitting area 101, i.e., the inner edge contour of the shielding area 102 or the contour of the light-transmitting area 101, is different from the surface stress at other locations in the shielding area 102 and the light-transmitting area 101. Furthermore, the boundary between the shielding area 102 and the light-transmitting area 101 is a weakened region with relatively low strength.

[0079] In some embodiments, a weakened region 103 is provided within the light-transmitting region 101, and each modified portion 13 is disposed within the weakened region 103. Specifically, a spacing S between the outline of the weakened region 103 and the outline of the shielding region 102 is 30 mm to 200 mm. The spacing S includes, but is not limited to, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm, 140 mm, 150 mm, 160 mm, 170 mm, 180 mm, 190 mm, 200 mm, and the like. In this way, the value of the spacing S is relatively reasonable. On the one hand, the spacing S is large enough to make the weakened area 103 as far away from the outline of the shielding area 102 as possible, avoiding overlapping with the weakened area at the outline position of the shielding area 102 to cause splinter defects; on the other hand, the spacing S is not too large, that is, the weakened area 103 almost covers the entire light-transmitting area 101, so that the strength of more parts of the light-transmitting area 101 is reduced, thereby improving safety.

[0080] Of course, in some optional solutions, the spacing S can also be flexibly adjusted and set to any value less than 30 mm and greater than 200 mm according to actual needs.

[0081] In some embodiments, the head injury index (HIC) value of the vehicle window glass 1 is less than 650. Preferably, the head injury index (HIC) value of the vehicle window glass 1 is less than or equal to 500. More preferably, the head injury index (HIC) value of the vehicle window glass 1 is less than or equal to 300. Even more preferably, the head injury index (HIC) value of the vehicle window glass 1 is between 150 and 300. This improves the energy absorption and cushioning capabilities of the vehicle window glass 1 when subjected to high-speed impacts from blunt objects, reducing injuries to people caused by violent collisions and providing protection for pedestrians.

[0082] In some embodiments, the head injury index HIC value of the vehicle window glass 1 includes but is not limited to 120, 150, 160, 170, 180, 190, 200, 210, 220, 230, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400, 420, 450, 470, 500, 520, 550, 570, 600, etc., and can be flexibly adjusted and set according to actual needs.

[0083] Referring to FIG. 2 to FIG. 7 , in some embodiments, a method for manufacturing the vehicle window glass 1 according to any of the above embodiments includes the following steps:

[0084] In step 1, referring to Figures 2 to 5 , a laser is focused on the first glass plate 11 and / or the second glass plate 12 to modify the first glass plate 11 and / or the second glass plate 12 to obtain a plurality of modified portions 13. Specifically, the modified portions 13 can be formed on any surface of the first glass plate 11 (as shown in Figures 2 and 5 ), or can be located inside the first glass plate 11, i.e., spaced apart from both the inner and outer surfaces of the first glass plate 11. Similarly, the modified portions 13 can be located on any surface of the second glass plate 12 (as shown in Figures 2 and 5 ), or can be located inside the second glass plate 12 (as shown in Figure 3 ), i.e., spaced apart from both the inner and outer surfaces of the second glass plate 12.

[0085] In addition, please refer to FIG. 7 , which shows a schematic structural diagram of a cross section of a modified laminated glass 10 under a microscope according to an embodiment of the present application.

[0086] Step 2, referring to FIG. 6 , the first glass plate 11 , the second glass plate 12 and the intermediate layer 20 are combined, wherein the first glass plate 11 and / or the second glass plate 12 are modified as in step 1 .

[0087] In the aforementioned manufacturing method for the vehicle window glass 1, the first glass sheet 11 and / or the second glass sheet 12 undergo laser treatment to form a plurality of spaced-apart modified portions 13. This creates non-uniformity in the glass properties, reducing the strength of the vehicle window glass 1, ensuring that the HIC value meets requirements, and thus improving safety. Furthermore, the modified portions 13 are not directly observable, preserving the product appearance of the vehicle window glass 1.

[0088] In some embodiments, step 1 includes:

[0089] The first glass plate 11 and / or the second glass plate 12 to be modified are placed on a platform, and the laser 30 is located above the first glass plate 11 and / or the second glass plate 12. The laser emitted by the laser 30 is focused on the first glass plate 11 and / or the second glass plate 12 through a galvanometer and a field lens, so that a plurality of modified portions 13 are formed on the first glass plate 11 and / or the second glass plate 12.

[0090] By adjusting the focusing position of the laser 30, the position of the modified portion 13 on the first glass plate 11 and / or the second glass plate 12 can be adjusted, so that the modified portion 13 can be formed on any surface of the first glass plate 11, or can be located inside the first glass plate 11, that is, there is a distance between the inner surface and the outer surface of the first glass plate 11; similarly, the modified portion 13 can be located on any surface of the second glass plate 12, or can be located inside the second glass plate 12, that is, there is a distance between the inner surface and the outer surface of the second glass plate 12.

[0091] Specifically, the third surface 121 of the second glass plate 12 is placed downward, i.e., facing the platform, and the fourth surface 122 of the second glass plate 12 is placed upward, i.e., facing away from the platform. Specifically, multiple modified portions 13 are formed on the side of the second glass plate 12 facing away from the laser 30, i.e., on the third surface 121. Compared to forming multiple modified portions 13 on the side of the second glass plate 12 facing the laser 30, this method avoids the formation of large pits on the side of the second glass plate 12 facing the laser 30. This results in higher processing quality for the second glass plate 12, lower requirements on equipment operating conditions, and greater advantages for mass production.

[0092] In some embodiments, the laser can be infrared light, specifically with a wavelength of 1064 nm, at the picosecond or nanosecond level; it can also be green light, specifically with a wavelength of 532 nm, at the picosecond or nanosecond level; it can also be other forms, which are not limited here.

[0093] Please refer to FIG. 1 . In one embodiment, a vehicle includes the window glass according to any one of the above embodiments.

[0094] In the aforementioned vehicle, the first glass sheet 11 and / or the second glass sheet 12 undergo laser treatment to form a plurality of spaced-apart modified portions 13. This creates non-uniformity in the glass properties, reducing the strength of the vehicle window glass 1, ensuring that the HIC value meets the required standards, and thus improving safety. Furthermore, the modified portions 13 are not directly observable, preserving the product appearance of the vehicle window glass 1.

[0095] When the vehicle window glass 1 is installed on a vehicle, it is preferably used as the front windshield of the vehicle. However, the vehicle window glass 1 is not limited thereto and can also be used as a rear windshield or side windows, thereby providing more application scenarios for the vehicle, for example, it can be used as a side window for emergency escape.

[0096] The vehicles in this application may be, but are not limited to, sedans, multi-purpose vehicles (MPVs), sport / suburban utility vehicles (SUVs), off-road vehicles (ORVs), pickup trucks, vans, buses, and trucks.

[0097] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0098] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0099] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A vehicle window glass, comprising laminated glass, wherein, in a direction from outside the vehicle to inside the vehicle, the laminated glass comprises, in order, a first glass sheet, an intermediate layer, and a second glass sheet, the intermediate layer being connected between the first glass sheet and the second glass sheet, the first glass sheet and the second glass sheet respectively having an outer surface facing outside the vehicle and an inner surface opposite the outer surface; The laminated glass is provided with a weakened area, and the weakened area includes a plurality of modified parts. The first glass plate and / or the second glass plate is formed with the plurality of modified parts arranged at intervals after laser processing.

2. The vehicle window glass according to claim 1, wherein The first glass sheet includes a first surface and a second surface disposed opposite to each other, the second glass sheet includes a third surface and a fourth surface disposed opposite to each other, the intermediate layer is connected to the second surface and the third surface respectively, the first surface is the outer surface of the first glass sheet facing the outside of the vehicle, the second surface is the inner surface of the first glass sheet facing the inside of the vehicle, the third surface is the outer surface of the second glass sheet facing the outside of the vehicle, and the fourth surface is the inner surface of the second glass sheet facing the inside of the vehicle; The modified portion extends from the first surface of the first glass plate toward the second surface, and / or The modified portion extends from the third surface toward the fourth surface of the second glass plate.

3. The vehicle window glass according to claim 1 or 2, wherein: Along the thickness direction of the laminated glass, the depth of the modified portion is H1, the thickness of the first glass plate or the second glass plate is H2, and 0.2H2≤H1<H2.

4. The vehicle window glass according to any one of claims 1 to 3, wherein: The modified portion is located on the first surface of the first glass plate, and / or The modified portion is located on the third surface of the second glass plate.

5. The vehicle window glass according to any one of claims 1 to 4, wherein: The modified portion is located inside the first glass plate and / or the second glass plate; The distance between the modified portion inside the first glass plate and the outer surface of the first glass plate or the distance between the modified portion inside the second glass plate and the outer surface of the second glass plate is set to H3, the thickness of the first glass plate or the second glass plate is set to H2, and 0.2H2≤H3<0.5H2.

6. The vehicle window glass according to any one of claims 1 to 5, wherein: Along a width direction parallel to the laminated glass, a distance between two farthest points of a pattern outline formed by the modified portion on the outer surface of the first glass plate and / or the second glass plate is set to D, and D≤0.5 mm.

7. The vehicle window glass according to any one of claims 1 to 6, wherein: Along a width direction parallel to the laminated glass, a distance between two adjacent modified portions on the outer surface of the first glass plate and / or the second glass plate is set to d, and 20 mm ≤ d ≤ 300 mm.

8. The vehicle window glass according to any one of claims 1 to 7, wherein: The first glass plate and the second glass plate are both provided with a plurality of modified portions arranged at intervals, and the modified portions of the first glass plate and the second glass plate are staggered with each other along the thickness direction of the laminated glass.

9. The vehicle window glass according to any one of claims 1 to 8, wherein: The first glass plate and the second glass plate are both provided with a plurality of modified portions arranged at intervals, and the modified portions of the first glass plate and the second glass plate overlap with each other along the thickness direction of the laminated glass.

10. The vehicle window glass according to any one of claims 1 to 9, wherein: The first glass plate and the second glass plate are both provided with a plurality of modified portions arranged at intervals; the modified portions of the first glass plate are located inside the first glass plate, and the modified portions of the second glass plate are located on the outer surface of the second glass plate.

11. The vehicle window glass according to any one of claims 1 to 10, wherein: The modified portion is provided only on the third surface of the second glass plate, or The modified portion is provided only inside the second glass sheet.

12. The vehicle window glass according to any one of claims 1 to 11, wherein: The vehicle window glass is provided with a light-transmitting area and a shielding area arranged circumferentially around the light-transmitting area. The visible light transmittance of the light-transmitting area is greater than or equal to 70%, and the visible light transmittance of the shielding area is less than or equal to 5%. The weakened area is located in the light-transmitting area.

13. The vehicle window glass according to claim 12, wherein: The distance between the outline of the shielding area and the outline of the weakened area is set to S, 30mm≤S≤200mm.

14. The vehicle window glass according to any one of claims 1 to 13, wherein: The head injury index HIC value of the weakened area is less than 650.

15. The vehicle window glass according to any one of claims 1 to 14, wherein: The head injury index HIC value of the weakened area is less than or equal to 300, or The head injury index HIC value of the weakened area is 150-300.

16. The vehicle window glass according to any one of claims 1 to 15, wherein: The inner surface of the first glass plate and / or the second glass plate is laser-processed to form a plurality of modified portions that are spaced apart.

17. The vehicle window glass according to claim 16, wherein: A plurality of modified portions are provided on both the outer surface and the inner surface of the first glass plate at intervals, and the modified portions on the outer surface and the inner surface of the first glass plate are staggered with respect to each other along the thickness direction of the first glass plate; and / or A plurality of modified portions are provided on both the outer surface and the inner surface of the second glass plate. The modified portions on the outer surface and the inner surface of the second glass plate are staggered with respect to each other along the thickness direction of the second glass plate.

18. A method for manufacturing a vehicle window glass according to any one of claims 1 to 17, comprising the following steps: Step 1: focusing a laser on the first glass plate and / or the second glass plate to modify the first glass plate and / or the second glass plate to obtain a plurality of modified portions; Step 2: Laminating the first glass plate, the second glass plate and the intermediate layer.

19. The method for manufacturing a vehicle window glass according to claim 18, wherein: Step 1 includes: The first glass plate and / or the second glass plate to be modified are placed on a platform, a laser is located above the first glass plate and / or the second glass plate, and laser light emitted by the laser is focused on the first glass plate and / or the second glass plate through a galvanometer and a field lens, so that a plurality of modified portions are formed on the first glass plate and / or the second glass plate.

20. A vehicle comprising the vehicle window glass according to any one of claims 1 to 17.

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