Vehicle window glass and method for manufacturing the same, and vehicle

Abstract

The present application relates to a vehicle window glass and a manufacturing method thereof, and a vehicle. The vehicle window glass includes a laminated glass. From the direction from the outside of the vehicle to the inside of the vehicle, the laminated glass includes a first glass plate, an intermediate layer, and a second glass plate in sequence. The intermediate layer is connected between the first glass plate and the second glass plate. The first glass plate and the second glass plate 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, and the weakened area includes a plurality of modified parts. The first glass plate and / or the second glass plate are formed with a plurality of modified parts arranged at intervals after laser treatment. In this way, the glass properties are uneven, the strength of the vehicle window glass can be reduced, and the HIC value meets the requirements, thereby improving safety. In addition, the modified part will not be directly observed, which can ensure the product appearance of the vehicle window glass.

Description

Technical Field

[0001] 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

[0002] With the continuous development of the global economy, the number of cars has also been rising, and the resulting car safety issues have become particularly prominent. In particular, vulnerable groups among road users such as pedestrians and cyclists are more vulnerable to injuries when they collide with vehicles in traffic accidents. Countries have begun to implement laws and regulations on pedestrian head protection, and have added reinforcements to head protection and restrictions on leg protection. Regarding collisions between vehicles and pedestrians, the most common part of pedestrians that are fatally injured is the head. In China, a test method for numerically quantifying head injuries has been developed, that is, assuming that the pedestrian's head collides with the windshield, etc., a dummy (head impactor) simulating an adult's head is launched from a test machine to the object, and the impact received by the head impactor is measured and evaluated as a head injury criterion (HIC). When a pedestrian collides head-on with a car, the pedestrian's lower limbs first contact the car bumper, which then causes the upper part of the pedestrian's body to rotate, and finally the pedestrian's head will hit the hood or windshield. Studies have shown that although secondary ground impacts may also cause injuries, the most serious injury is still the primary impact between pedestrians and vehicles. In order to reduce head injuries in collisions between pedestrians and vehicles, ENCAP, CNCAP, etc. have set the five-star collision HIC 15 Values ​​are defined as <650.

[0003] In the related art, the methods for producing vehicle windshields mainly include self-weight molding and single-piece press molding. Among them, single-piece press molding is widely used due to its advantages such as good surface transition, small fluctuation, fast production frequency and low cost. Its molding process steps include: the single-piece glass plate is heated and softened in the heating furnace through the transmission of ceramic rollers, and then moves to the molding section, and then the single-piece glass plate is pressed and formed 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 molding, the glass surface stress is high and the glass strength is high. It cannot play a good buffering role during the collision with pedestrians. The HIC value is usually greater than 1000, and thus the safety index requirements cannot be met. Summary of the invention

[0004] Based on this, it is necessary to overcome the defects of the prior art and provide a vehicle window glass and a manufacturing method thereof, and a vehicle, which can reduce the HIC value and thus improve safety.

[0005] The present invention provides a vehicle window glass, the vehicle window glass comprises a laminated glass, and along the direction from the outside of the vehicle to the inside of the vehicle, the laminated glass comprises a first glass plate, an intermediate layer and a second glass plate in sequence, the intermediate layer is connected between the first glass plate and the second glass plate, the first glass plate and the second glass plate respectively have an outer surface facing the outside of the vehicle and an inner surface opposite to the outer surface;

[0006] The laminated glass is provided with a weakened zone, and the weakened zone includes a plurality of modified parts. The first glass plate and / or the second glass plate is formed with a plurality of modified parts arranged at intervals after laser processing.

[0007] In one embodiment, the modified portion extends from the outer surface of the first glass plate and / or the second glass plate toward the inner surface;

[0008] 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 set to H2, and 0.2H2≤H1<H2.

[0009] In one embodiment, the modified portion is located inside the first glass sheet and / or the second glass sheet;

[0010] 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, 0.2H2≤H3<0.5H2.

[0011] In one embodiment, 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.

[0012] In one embodiment, 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, 20 mm ≤ d ≤ 300 mm.

[0013] 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 offset from each other along the thickness direction of the laminated glass.

[0014] 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.

[0015] In one embodiment, 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 an outer surface of the second glass plate.

[0016] 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.

[0017] In one embodiment, the head injury index HIC value of the weakened area is less than 650.

[0018] 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.

[0019] In one embodiment, the inner surface of the first glass plate and / or the second glass plate is processed by laser to form a plurality of modified portions arranged at intervals.

[0020] In one embodiment, a plurality of modified portions are disposed on both the outer surface and the inner surface of the first glass plate and are spaced apart from each other, 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

[0021] A plurality of modified portions are disposed at intervals on both the outer surface and the inner surface of the second glass plate, and the modified portions on the outer surface and the inner surface of the second glass plate are offset from each other along the thickness direction of the second glass plate.

[0022] The present invention also provides a method for manufacturing the above-mentioned vehicle window glass, comprising the following steps:

[0023] 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 parts;

[0024] Step 2: Lay the first glass plate, the second glass plate and the intermediate layer together.

[0025] In one embodiment, step 1 also includes:

[0026] 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 parts are formed on the first glass plate and / or the second glass plate.

[0027] The present invention also provides a vehicle, comprising the above-mentioned vehicle window glass.

[0028] In the above-mentioned vehicle window glass, manufacturing method thereof, and vehicle, the first glass plate and / or the second glass plate are formed with a plurality of modified parts arranged at intervals after laser treatment, so that the glass properties are uneven, the strength of the vehicle window glass can be reduced, the HIC value meets the requirements, and safety is improved. In addition, the modified parts cannot be directly observed, which can ensure the product appearance of the vehicle window glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG. 1 is a schematic structural diagram of a vehicle window glass according to an embodiment of the present application.

[0030] FIG. 2 is a schematic diagram of the cross-sectional structure of a laminated glass according to an embodiment of the present application.

[0031] FIG. 3 is a schematic diagram of the cross-sectional structure of a laminated glass according to another embodiment of the present application.

[0032] FIG. 4 is a schematic diagram of the cross-sectional structure of a laminated glass according to another embodiment of the present application.

[0033] FIG. 5 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.

[0034] FIG. 6 is a schematic diagram of the exploded structure of a laminated glass after modification according to an embodiment of the present application.

[0035] FIG. 7 is a schematic structural diagram of a cross section of a modified laminated glass under a microscope according to an embodiment of the present application.

[0036] 1. Window glass; 10. Laminated glass; 101. Translucent area; 102. Shielding area; 103. Weakened area; 11. First glass plate; 111. First surface; 112. Second surface; 12. Second glass plate; 121. Third surface; 122. Fourth surface; 13. Modified part; 131. First modified part; 132. Second modified part; 20. Intermediate layer; 30. Laser. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0038] Referring to Figures 1 to 3, Figure 1 shows a schematic diagram of the structure of a vehicle window glass according to an embodiment of the present application. Figures 2 and 3 respectively show schematic diagrams of the cross-sectional structures of laminated glass according to two different embodiments of the present application. A vehicle window glass provided in an embodiment of the present application, the vehicle window glass 1 comprises a laminated glass 10, and along the direction 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, and 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, the weakened area 103 comprises a plurality of modified portions 13, and the first glass plate 11 and / or the second glass plate 12 are formed with a plurality of modified portions 13 arranged at intervals after laser treatment. Among them, the modified portion 13 can be located on any surface of the first glass plate 11 (as shown in FIG. 2 ), 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 (as shown in FIG. 4 ), or can be located inside the second glass plate 12 (as shown in FIG. 3 ), that is, there is a distance between the inner surface and the outer surface of the second glass plate 12 .

[0039] It should be noted that the first glass plate 11 faces the external environment of the vehicle, and the second glass plate 12 faces the internal environment of the vehicle. Specifically, the first glass plate 11 includes a first surface 111 and a second surface 112 disposed opposite to each other, and the second glass plate 12 includes a third surface 121 and a fourth surface 122 disposed opposite to each other. The intermediate layer 20 is connected to the second surface 112 and the third surface 121, respectively. In this embodiment, the first surface 111 is the outer surface of the first glass plate 11 facing the outside of the vehicle, and the second surface 112 is the inner surface of the first glass plate 11 facing the inside of the vehicle; the third surface 121 is the outer surface of the second glass plate 12 facing the outside of the vehicle, and the fourth surface 122 is the inner surface of the second glass plate 12 facing the inside of the vehicle.

[0040] 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 (ionic polymer membrane) material.

[0041] In some embodiments, glass sheet 10 includes one or more of soda-lime silicate, aluminosilicate.

[0042] Specifically, after the laser treatment, the first glass plate 11 is formed with a plurality of first modified portions 131 arranged at intervals, and / or after the laser treatment, the second glass plate 12 is formed with a plurality of second modified portions 132 arranged at intervals.

[0043] The first modified portion 131 may be obtained by laser treatment during the molding process of the first glass plate 11, or by laser treatment after the molding of the first glass plate 11. Under the action of laser treatment, the strength of the first modified portion 131 is weaker than the strength of the portion of the first glass plate 11 that has not been modified by laser. Similarly, the second modified portion 132 may be obtained by laser treatment during the molding process of the second glass plate 12, or by laser treatment after the molding of the second glass plate 12. Under the action of laser treatment, the strength of the second modified portion 132 is weaker than the strength of the portion of the second glass plate 12 that has not been modified by laser.

[0044] 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 unevenness 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, the HIC value is increased, and the safety performance is reduced.

[0045] In the above-mentioned vehicle window glass 1, the first glass plate 11 and / or the second glass plate 12 are formed with a plurality of modified portions 13 arranged at intervals after laser treatment, so that the glass properties are uneven, the strength of the vehicle window glass 1 can be reduced, the HIC value meets the requirements, and safety is improved. In addition, the modified portions 13 cannot be directly observed, and the product appearance of the vehicle window glass 1 can be guaranteed.

[0046] Please refer to FIG. 2 , FIG. 4 and FIG. 5 , the modified portion 13 extends from the outer surface of the first glass plate 11 and / or the second glass plate 12 to the inner surface; along the thickness direction of the laminated glass 10, the depth of the modified portion 13 is H1, the thickness of the first glass plate 11 or the second glass plate 12 is set to H2, 0.2H2≤H1<H2. Preferably, 0.5H2≤H1<H2. When the depth H1 of the modified portion 13 extending from the outer surface of the first glass plate 11 and / or the second glass plate 12 to the inner surface is deeper, the strength of the vehicle window glass 1 is lower, the buffering effect is more obvious during the collision with pedestrians, and the HIC value is reduced; on the contrary, when the depth H1 of the modified portion 13 extending from the outer surface of the first glass plate 11 and / or the second glass plate 12 to the inner surface is shallower, the strength of the vehicle window glass 1 is greater, the buffering effect is less obvious during the collision with pedestrians, and the HIC value is increased. 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.

[0047] 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.

[0048] 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 plate 10 is correspondingly reduced by increasing the number of modified parts 13, so that the HIC value is reduced and meets the requirements.

[0049] Please refer to FIG. 2 again. In some embodiments, the outer surfaces of the first glass plate 11 and the second glass plate 12 are provided with a plurality of modified portions 13 arranged at intervals. That is, the first surface 111 of the first glass plate 11 and the third surface 121 of the second glass plate 12 are provided with a plurality of modified portions 13 arranged at intervals. In this way, the number and depth of the modified portions 13 can be controlled and adjusted to reduce the HIC value, thereby meeting the safety requirements. In addition, compared with the method of providing the modified portions 13 on the first surface 111 and the second surface 112 of the first glass plate 11, and the third surface 121 and the fourth surface 122 of the second glass plate 12, the method of providing the modified portions 13 only on the first surface 111 of the first glass plate 11 and the third surface 121 of the second glass plate 12 can improve the processing convenience of the laminated glass 10 and improve the production efficiency.

[0050] If the modified portion 13 is provided on the first surface 111 of the first glass plate 11, the outer surface of the first glass plate 11 is directly in contact with the external environment and is easily damaged, which may affect the service life of the laminated glass 10. Therefore, referring to FIG. 4 again, preferably, the modified portion 13 is provided only on the third surface 121 of the second glass plate 12. In this way, only the second glass plate 12 is modified to reduce the strength. After being combined with another glass plate that has not been modified, the overall strength of the obtained vehicle window glass 1 is correspondingly reduced, and the HIC value can also meet the requirements, and the safety is improved.

[0051] In some embodiments, the modified portion 13 is located inside the first glass plate 11 and / or the second glass plate 12. In this way, on the one hand, it can avoid the modified portion 13 from directly contacting the external environment and easily causing damage defects, thereby relatively extending the service life of the laminated glass 10; on the other hand, the modified portion 13 is in the tensile stress layer, which helps the cracks to spread when a pedestrian collision occurs, thereby reducing the strength of the glass. In addition, the distance between the modified portion inside the first glass plate 11 and the outer surface of the first glass plate 11 or the distance between the modified portion inside the second glass plate 12 and the outer surface of the second glass plate 12 is set to H3, and the thickness of the first glass plate 11 or the second glass plate 12 is set to H2, 0.2H2≤H3<0.5H2. In this way, the size of the distance H3 is relatively appropriate, which can achieve a smaller HIC value of the window glass 1, thereby improving safety performance.

[0052] 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.

[0053] Please refer to FIG. 3 . Preferably, the modified portion 13 is only provided inside the second glass plate 12 . In this way, only the second glass plate 12 is modified to reduce its strength. After being combined with another glass plate that has not been modified, the overall strength of the obtained vehicle window glass 1 is correspondingly reduced, and the HIC value can also meet the requirements, and the safety is improved. This is because the second glass plate 12 is correspondingly an inner glass plate, and the modified portion 13 is located inside the second glass plate 12 . On the one hand, it can prevent the modified portion 13 from directly contacting the external environment and easily causing damage defects, thereby relatively extending the service life of the laminated glass 10; on the other hand, the modified portion 13 is in a tensile stress layer, which helps the cracks to spread when a pedestrian collision occurs, thereby reducing the strength of the glass.

[0054] Please refer to FIG. 2 . In some embodiments, the first glass plate 11 and the second glass plate 12 are both provided with a plurality of modified portions 13 arranged at intervals. In the thickness direction X of the laminated glass 10, the modified portions 13 provided on the first glass plate 11 and the second glass plate 12 are staggered with each other. Specifically, a plurality of first modified portions 131 are provided on the first surface 111 of the first glass plate 11, and a plurality of second modified portions 132 are provided on the third surface 121 of the second glass plate 12. In the thickness direction X of the laminated glass 10, the first modified portions 131 and the second modified portions 132 are staggered. In this way, the HIC can be sufficiently small, thereby meeting the safety requirements. In addition, a plane perpendicular to the direction X is selected as a reference plane, and the orthographic projections of the modified portions 13 of the vehicle window glass 1 on the reference plane are arranged at equal intervals. In this way, the strength of each part of the vehicle window glass 1 is relatively uniform, which can further improve safety.

[0055] In some embodiments, the first glass plate 11 and the second glass plate 12 are both provided with a plurality of modified portions 13 arranged at intervals, and the modified portions 13 arranged on the first glass plate 11 and the second glass plate 12 overlap each other along the thickness direction X of the laminated glass 10. Specifically, a plurality of first modified portions 131 are provided on the first surface 111 of the first glass plate 11, and a plurality of second modified portions 132 are provided on the third surface 121 of the second glass plate 12, and the first modified portions 131 and the second modified portions 132 overlap each other along the thickness direction X of the laminated glass 10. In this way, the HIC can be made small enough to meet the safety requirements. In addition, a plane perpendicular to the direction X is selected as a reference plane, and the orthographic projections of the modified portions 13 of the vehicle window glass 1 on the reference plane are arranged at equal intervals. In this way, the strength of each part of the vehicle window glass 1 is relatively uniform, which can further improve safety.

[0056] In some embodiments, the first glass plate 11 and the second glass plate 12 are both provided with a plurality of modified portions 13 arranged at intervals. Specifically, the first glass plate 11 is set as an outer glass plate, and the modified portion 13 of the first glass plate 11 is located inside the first glass plate 11. In this way, since the first glass plate 11 is set as an outer glass plate, the outer surface of the first glass plate 11 is directly exposed. When the modified portion 13 of the first glass plate 11 is set inside the first glass plate 11, on the one hand, it can avoid the modified portion 13 directly contacting the external environment and easily causing damage defects, thereby relatively extending the service life of the first glass plate 11. On the other hand, the modified portion 13 is in a tensile stress layer, which helps the crack to spread when a pedestrian collision occurs, thereby reducing the glass strength. In addition, the second glass plate 12 is correspondingly an inner glass plate, and the modified portion 13 of the second glass plate 12 is specifically, for example, located on the outer surface of the second glass plate 12, which can also reduce the glass strength.

[0057] In some embodiments, the inner surface of the first glass plate 11 and / or the second glass plate 12 is formed with a plurality of modified portions 13 disposed at intervals after laser treatment. That is, the plurality of first modified portions 131 are not limited to being disposed on the first surface 111 as in the above embodiment, but may also be disposed on the second surface 112. Similarly, the plurality of second modified portions 132 are not limited to being disposed on the third surface 121 as in the above embodiment, but may also be disposed on the fourth surface 122. Specifically, referring to FIG. 2 , the first modified portions 131 are disposed on both the first surface 111 and the second surface 112 of the first glass plate 11, and / or the second modified portions 132 are disposed on both the third surface 121 and the fourth surface 122 of the second glass plate 12.

[0058] In some embodiments, a plurality of modified portions 13 are disposed at intervals on both the outer surface and the inner surface of the first glass plate 11, and the modified portions 13 on the outer surface and the inner surface of the first glass plate 11 are mutually offset along the thickness direction of the first glass plate 11; and / or a plurality of modified portions 13 are disposed at intervals on both the outer surface and the inner surface of the second glass plate 12, and the modified portions 13 on the outer surface and the inner surface of the second glass plate 12 are mutually offset along the thickness direction of the second glass plate 12. Specifically, the first modified portions 131 on the first surface 111 and the second surface 112 of the first glass plate 11 are mutually offset along the thickness direction X perpendicular to 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 plate 12 are mutually offset along the thickness direction X perpendicular to the laminated glass 10. In this way, the strength of each part 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 parts 13 on the outer surface and the inner surface of the first glass plate 11 and / or the second glass plate being aligned with each other in the thickness direction X perpendicular to the laminated glass 10.

[0059] Referring to FIG. 1 , in some embodiments, along the width direction parallel to the laminated glass 10, the distance between the two farthest points of the pattern outline formed by the modified portion 13 on the outer surface of the first glass plate 11 and / or the second glass plate 12 is set to D, and 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. In this way, the pattern outline formed by the modified portion 13 on the laminated glass 10 is small enough to be unobservable, thereby improving the appearance performance of the vehicle window glass 1.

[0060] 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. Among them, polygons include triangles, quadrilaterals, pentagons, etc. 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.

[0061] 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.

[0062] In some embodiments, D may also be set to be greater than 3 mm according to actual needs.

[0063] Please refer to FIG. 1 . In some embodiments, each modified portion 13 is arranged in an array in the light-transmitting area 101 of the vehicle window glass 1 , and more specifically, is arranged in a weakened area 103 inside the light-transmitting area 101 . The size and shape of the weakened area 103 are flexibly adjusted and set according to actual needs, and can meet the needs of users. When a plurality of modified portions 13 arranged in an array are provided in the weakened area 103 , the strength of each part of the weakened area 103 can be lower than that of other parts of the light-transmitting area 101 , that is, the HIC value of the weakened area 103 meets the requirements, plays a buffering role during the collision, and has a higher safety.

[0064] 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.

[0065] 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. In this way, on the one hand, the spacing d between two adjacent modified portions 13 is large enough so that the modified portions 13 are not easily observed and affect the appearance 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 densely enough, so that the strength of the vehicle window glass 1 can be reduced well, so that the HIC value meets the requirements.

[0066] 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.

[0067] 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. Among them, the light-transmitting area 101 is also a perspective area, and the occupants of the vehicle can observe the environment outside the vehicle through the light-transmitting area 101. 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 a higher safety. In addition, the shielding area 102 is also a 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 when it is arranged in the shielding area 102.

[0068] 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 0, i.e., opaque. Specifically, the shielding area 102 includes, but is not limited to, a dark ink layer, the first surface 111 is set as the surface of the window glass facing the outside environment of the vehicle, and the fourth surface 122 is set as the surface of the window glass facing the inside environment of the vehicle. The ceramic ink or ultraviolet ink is printed on the second surface 112 by screen printing, inkjet printing and other processes, and a dark ink layer is formed after curing or high-temperature sintering, and the dark ink layer is arranged around the edge area of ​​the second surface 112. It can be understood that the dark ink layer can also be located only on the third surface 121, or only on the fourth surface 122, or on the second surface 112 and the fourth surface 122 at the same time, or on the second surface 112 and the third surface 121 at the same time, or on the third surface 121 and the fourth surface 122 at the same time, or on the second surface 112, the third surface 121 and the fourth surface 122 at the same time.

[0069] The surface stress at the boundary between the shielding area 102 and the light-transmitting area 101, that is, 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 positions of the shielding area 102 and other positions of the light-transmitting area 101. In addition, the boundary between the shielding area 102 and the light-transmitting area 101 is a weakened area with lower strength.

[0070] In some embodiments, a weakened area 103 is provided inside the light-transmitting area 101, and each modified portion 13 is arranged inside the weakened area 103. Specifically, the spacing S between the outline of the weakened area 103 and the outline of the shielding area 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 crack 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.

[0071] 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.

[0072] 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 150-300. In this way, the vehicle window glass 1 has better energy absorption and buffering capabilities when it is impacted by a blunt object at high speed, reduces the damage to people caused by severe collisions, and can protect pedestrians.

[0073] 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.

[0074] Please refer to FIG. 2 to FIG. 7 . In some embodiments, a method for manufacturing the vehicle window glass 1 of any of the above embodiments comprises the following steps:

[0075] Step 1, please refer to Figures 2 to 5, 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 portion 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, that is, there is a gap 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 (as shown in Figures 2 and 5), or can be located inside the second glass plate 12 (as shown in Figure 3), that is, there is a gap between the inner surface and the outer surface of the second glass plate 12.

[0076] 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 after being cut according to an embodiment of the present application.

[0077] Step 2, please refer 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 in step 1 .

[0078] In the manufacturing method of the vehicle window glass 1, the first glass plate 11 and / or the second glass plate 12 are formed with a plurality of modified portions 13 arranged at intervals after laser treatment, so that the glass properties are uneven, the strength of the vehicle window glass 1 can be reduced, the HIC value meets the requirements, and safety is improved. In addition, the modified portion 13 will not be directly observed, which can ensure the product appearance of the vehicle window glass 1.

[0079] In some embodiments, step 1 comprises:

[0080] The first glass plate 11 and / or the second glass plate 12 to be modified are placed on a platform, the laser 30 is located above the first glass plate 11 and / or the second glass plate 12, and 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.

[0081] Among them, 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.

[0082] Specifically, the third surface 121 of the second glass plate 12 is placed downward, that is, facing the platform, and the fourth surface 122 of the second glass plate 12 is placed upward, that is, facing away from the platform. Specifically, the second glass plate 12 is placed on the side facing away from the laser 30, that is, a plurality of modified portions 13 are formed on the third surface 121. Compared with the method of forming a plurality of modified portions 13 on the side of the second glass plate 12 facing the laser 30, a large pit can be avoided on the side of the second glass plate 12 facing the laser 30, that is, the processing quality of the second glass plate 12 is higher, the working condition requirements of the equipment are lower, and it is more conducive to mass production.

[0083] In some embodiments, the laser can be infrared light with a specific wavelength of 1064nm, picosecond or nanosecond level; it can also be green light with a specific wavelength of 532nm, picosecond or nanosecond level; it can also be other forms, which are not limited here.

[0084] Please refer to FIG. 1 . In one embodiment, a vehicle includes the window glass of any one of the above embodiments.

[0085] In the above-mentioned vehicle, the first glass plate 11 and / or the second glass plate 12 are formed with a plurality of modified portions 13 arranged at intervals after laser treatment, so that the glass properties are uneven, the strength of the vehicle window glass 1 can be reduced, the HIC value meets the requirements, and safety is improved. In addition, the modified portions 13 cannot be directly observed, and the product appearance of the vehicle window glass 1 can be guaranteed.

[0086] 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 can also be used as a rear windshield or a side window glass, thereby providing more scene applications for the vehicle, for example, it can be used as a side window glass for emergency escape.

[0087] 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.

[0088] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0089] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0090] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A vehicle window glass, characterized in that: The vehicle window glass comprises a laminated glass, and along the direction from the outside of the vehicle to the inside of the vehicle, the laminated glass comprises a first glass plate, an intermediate layer and a second glass plate in sequence, the intermediate layer is connected between the first glass plate and the second glass plate, and the first glass plate and the second glass plate respectively have an outer surface facing the outside of the vehicle and an inner surface opposite to the outer surface; The first glass plate includes a first surface and a second surface disposed opposite to each other, the second glass plate 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 plate facing the outside of the vehicle, the second surface is the inner surface of the first glass plate facing the inside of the vehicle, the third surface is the outer surface of the second glass plate facing the outside of the vehicle, and the fourth surface is the inner surface of the second glass plate facing the inside of the vehicle; The laminated glass is provided with a weakened area, the weakened area includes a plurality of modified parts, and the first glass plate and / or the second glass plate are formed with a plurality of modified parts arranged at intervals after laser treatment; 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 of the second glass plate toward the fourth surface; The modified portion is located on the third surface of the second glass plate, and 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 set to H2, 0.2H2≤H1<H2; and / or The modified portion is located inside the first glass plate and / or the second glass plate, and 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, 0.2H2≤H3<0.5H2.

2. The vehicle window glass according to claim 1, characterized in that: The modified portion is also located on the first surface of the first glass plate.

3. The vehicle window glass according to claim 1, characterized in that: 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.

4. The vehicle window glass according to claim 1, characterized in that: 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.

5. The vehicle window glass according to claim 1, characterized in that: 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 offset from each other along the thickness direction of the laminated glass.

6. The vehicle window glass according to claim 1, characterized in that: 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.

7. The vehicle window glass according to claim 1, characterized in that: 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 an outer surface of the second glass plate.

8. The vehicle window glass according to claim 1, characterized in that: 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.

9. The vehicle window glass according to claim 1, characterized in that: 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.

10. The vehicle window glass according to claim 9, characterized in that: The distance between the outline of the shielding area and the outline of the weakened area is set to S, 30mm≤S≤200mm.

11. The vehicle window glass according to claim 1, characterized in that: The head injury index HIC value of the weakened zone is less than 650.

12. The vehicle window glass according to claim 1, characterized in that: 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.

13. The vehicle window glass according to claim 1, characterized in that: The inner surface of the first glass plate and / or the second glass plate is formed with a plurality of modified portions arranged at intervals after laser treatment.

14. The vehicle window glass according to claim 13, characterized in that: A plurality of modified portions are disposed on both the outer surface and the inner surface of the first glass plate and are arranged 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 disposed at intervals on both the outer surface and the inner surface of the second glass plate, and the modified portions on the outer surface and the inner surface of the second glass plate are offset from each other along the thickness direction of the second glass plate.

15. A method for manufacturing a vehicle window glass according to any one of claims 1 to 14, characterized in that: The steps include: 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 parts; Step 2: Lay the first glass plate, the second glass plate and the intermediate layer together.

16. The method for manufacturing a vehicle window glass according to claim 15, characterized in that: 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 parts are formed on the first glass plate and / or the second glass plate.

17. A vehicle, characterized in that: The vehicle comprises the vehicle window glass according to any one of claims 1 to 14.

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