Car window glass and vehicles

Abstract

A car window glass (10) is provided. The car window glass (10) includes an outer layer glass (11), an inner layer glass (13), and an intermediate layer (12) connected between the outer layer glass (11) and the inner layer glass (13), the outer layer glass (11) includes a first reinforced region (111) and a second reinforced region (112), the first reinforced region (111) is connected to the outside of the second reinforced region (112), and the surface stress of the first reinforced region (111) is greater than the surface stress of the second reinforced region (112). Also provided is a vehicle (100). This car window glass ensures the mechanical strength of the car window glass, and even if the car window glass is damaged, it can have a relatively intact structure, so that the interior space of the vehicle is difficult to be intruded into, and the vehicle has good anti-theft performance.

Description

[Technical field]

[0001] REFERENCE TO RELATED APPLICATIONS This application claims priority to Chinese Patent Application No. 202210111832.5, filed on January 29, 2022, for the invention entitled "Car Window Glass and Vehicle," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the vehicle field, and in particular to vehicle glazing and vehicles. [Background technology]

[0003] At present, tempered glass is widely used in vehicle window glass, and its strength is several times higher than that of ordinary glass, and its impact resistance is 5 to 10 times that of ordinary glass. Due to the improved strength of tempered glass, car window glass has higher mechanical strength and can be adapted to more usage scenarios. At the same time, the use of tempered glass is relatively safe, so even if tempered glass is broken, it will present small fragments without sharp edges, and the injury that may be caused to the human body has been greatly reduced.

[0004] However, since the tempered glass breaks into many small pieces when broken, it is difficult to guarantee the integrity of the contour of the car window, and after the tempered glass is damaged, the interior space of the car is easily broken into and the contents inside the car are easily stolen. Summary of the Invention

[0005] The present application provides a car window glass and a vehicle, which ensures the mechanical strength of the car window glass, and allows the car window glass to maintain a relatively intact structure even if it is damaged, so that the interior space of the vehicle is difficult to be intruded into, and the vehicle has good anti-theft performance.

[0006] In a first aspect, the present application provides a vehicle glazing comprising an outer layer of glass, an inner layer of glass, and an interlayer connected between the outer layer of glass and the inner layer of glass, the outer layer of glass comprising a first strengthened region and a second strengthened region, the first strengthened region being connected to an outer side of the second strengthened region, and a surface stress of the first strengthened region being greater than a surface stress of the second strengthened region.

[0007] As can be seen, since the outer layer glass is strengthened, the car window glass has high rigidity and small deformation. In the actual use process, the car window glass is less likely to be broken by external forces due to its high rigidity, and can be adapted to more use scenarios. By dividing the outer layer glass into two regions, a first strengthened region and a second strengthened region, and making the surface stress of the first strengthened region greater than the surface stress of the second strengthened region, the strengthening degree of the first strengthened region can be made greater than the strengthening degree of the second strengthened region. That is, the first strengthened region can be understood as a full strengthened region, and the second strengthened region can be understood as a semi-strengthened region.

[0008] In addition, since the surface stress of the second reinforced region is smaller than that of the first reinforced region, after the car window glass is damaged, the fragments formed in the second reinforced region are larger than those of the first reinforced region, and the fragments of the second reinforced region are not too fine to fall off, so that the car window glass can maintain a relatively complete outline, thereby ensuring the independent space of the vehicle as much as possible, making it difficult for the outside world to invade the vehicle, and reducing the possibility of the inside of the car being stolen by intrusion from the outside world. In addition, if the car window glass is broken while driving, the broken car window glass does not affect the driver's field of vision, ensuring driving safety.

[0009] In addition, since car window glass is a laminated glass in which an outer layer glass, an intermediate layer glass and an inner layer glass are laminated, it has a better soundproofing effect against wind noise than single layer glass when the vehicle is traveling at high speed.

[0010] In one possible embodiment, the first reinforced region is provided around the second reinforced region so as to surround the second reinforced region.

[0011] As can be seen, since the first reinforced area is located on the peripheral edge of the car window glass, the edge strength of the car window glass is high, and the car window glass can be applied to a frameless door. The first reinforced area can reinforce the area of ​​the car window glass that is fixedly connected to the door and the area that is not protected by the door frame, so that the impact resistance of the car window glass can be improved and the car window glass is less likely to be damaged.

[0012] In one possible embodiment, the first reinforced region is provided on at least one side of the second reinforced region.

[0013] For example, the first reinforced area can be connected to the mounting hole of the car window glass or the lifter of the car window glass, and the first reinforced area has high strength and is not easily broken, so that the stability of the mounting can be ensured.

[0014] As can be seen, the first reinforced area can increase the strength of the car glazing in the area which is fixedly connected to the door and ensure a stable connection between the car glazing and the car body.

[0015] In one possible embodiment, the area of ​​the second reinforced region occupies 10% to 90% of the total area of ​​the car glazing.

[0016] In one possible embodiment, the thickness of the inner glass layer is less than or equal to 1.2 mm.

[0017] As we can understand, the thinner the glass, the more flexible it is, the lighter its weight is, the more transparent it is, the cleaner, brighter and more beautiful it is. Therefore, arranging the thickness of the inner layer glass in the range of 1.2mm or less is favorable to increasing the transparency of the car window glass and reducing the weight of the car window glass.

[0018] In one possible embodiment, the inner glass layer is a chemically toughened glass.

[0019] As can be understood, chemical strengthening is to place the inner layer glass in molten alkali salt, and exchange the ions on the surface of the inner layer glass with the ions in the molten salt. Due to the change in ion volume after the exchange, compressive stress can be formed on the two surfaces of the inner layer glass, and tensile stress can be formed inside, which has the effect of increasing the glass strength. After chemical strengthening, the inner layer glass has appropriate surface stress and stress layer depth, which plays a role in resisting crack expansion and bending, and can effectively increase the mechanical strength of the car window glass.

[0020] In one possible embodiment, the surface stress of the first reinforced region is greater than or equal to 90 MPa.

[0021] As can be appreciated, glass with a surface stress of 90 MPa or more may be fully tempered glass, which can increase the strength of the area of ​​the car window glass that is fixedly attached to the door and ensure that the car window glass is stably attached to the car body.

[0022] In one possible embodiment, the surface stress of the second reinforced region is in the range of 20 MPa to 70 MPa.

[0023] As can be seen, glass with a surface stress of 70 MPa or less can be semi-tempered glass, which has the high strength characteristics of tempered glass and avoids the disadvantage of full tempered glass being easily shattered after being broken.When semi-tempered glass is broken, it can be broken radially and radially along the crack source, and generally does not expand the crack in the tangential direction, so it can maintain its overall integrity without crumbling after being broken.

[0024] In one possible embodiment, the thickness of the outer glass layer is in the range of 3 mm to 5 mm.

[0025] As can be seen, the strength of tempered glass is positively correlated with the thickness of the tempered glass. The thickness of the outer layer glass is within the range of 3mm to 5mm, so that the outer layer glass can have sufficient mechanical strength and is not too thick, so as not to affect the compatibility of the car window glass with the car body and the transmittance of the car window glass.

[0026] In one possible embodiment, the inner glass layer is an aluminosilicate glass.

[0027] As can be seen, after the aluminosilicate glass undergoes chemical strengthening, the depth of the stress layer can cover the depth of the crack, and the expansion of the depth of the crack can be effectively prevented.

[0028] In one possible embodiment, the surface stress of the inner layer glass is in the range of 450 MPa to 850 MPa.

[0029] As can be seen, the surface stress can put the glass surface into a pre-compressive stress state, preventing cracks in the glass surface from propagating after being subjected to a force, improving the mechanical performance of the car glazing.

[0030] In one possible embodiment, the depth of the stress layer of the inner glass layer is in the range of 30 μm to 70 μm.

[0031] As can be seen, the depth of the stress layer, which is in the range of 30 μm to 70 μm, can be made greater than the depth of the crack propagation, thereby improving the mechanical performance of the car glazing.

[0032] In a second aspect, the present application provides a vehicle comprising a vehicle body and a vehicle glazing as described above, the vehicle glazing being connected to the vehicle body. [Brief description of the drawings]

[0033] In order to more clearly describe the technical solution of the present application, the following briefly introduces the drawings necessary for describing the embodiments. Obviously, the drawings described are only some embodiments of the present application, and those skilled in the art can obtain other drawings by these drawings without creative efforts. [Figure 1] 1 shows a vehicle provided in an embodiment of the present application. [Diagram 2] FIG. 1 is an exploded schematic view of a vehicle window glass provided in an example of the present application. [Diagram 3] FIG. 3 is a schematic diagram showing the structure of an outer layer glass of the vehicle window glass in FIG. 2. [Figure 4] FIG. 2 is an exploded schematic view of another vehicle window glass provided in an embodiment of the present application. [Diagram 5] FIG. 5 is a schematic diagram showing the structure of an outer layer glass of the vehicle window glass in FIG. [Figure 6] FIG. 2 is a schematic diagram showing the relationship between the surface stress of the inner layer glass provided in the examples of the present application and the depth of the stress layer. [Figure 7] FIG. 2 is a cross-sectional schematic diagram of an inner layer glass having microcracks provided in an example of the present application. [Figure 8] FIG. 2 is a line diagram comparing sound insulation performance between the Examples provided in the Examples of the present application and Comparative Examples 1 and 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0034] Hereinafter, the technical solutions of the embodiments of the present application will be described clearly and completely with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all embodiments. Based on the embodiments of the present application, all other embodiments that a person skilled in the art can obtain without creative efforts belong to the protection scope of the present application.

[0035] At present, tempered glass is widely used in vehicle window glass, and its strength is several times higher than that of ordinary glass, and its impact resistance is 5 to 10 times that of ordinary glass. Due to the improved strength of tempered glass, car window glass has higher mechanical strength and can adapt to more usage scenarios. At the same time, the use of tempered glass is relatively safe, so even if tempered glass is broken, it will present small fragments without sharp edges, and the injury that may be caused to the human body has been greatly reduced. However, because tempered glass breaks into many small fragments, it is difficult to guarantee the integrity of the contour of the car window. After the tempered glass is damaged, the interior space of the car will be easily invaded and the items inside the car will be easily stolen.

[0036] Based on this, and referring to Figures 1 to 8, the present application provides a car window glass 10 and a vehicle 100. As a result, the mechanical strength of the car window glass 10 is guaranteed, and even if the car window glass 10 is damaged, the car interior space is difficult to intrude into, and the vehicle 100 has good anti-theft performance.

[0037] 1, a vehicle 100 includes a vehicle body 20 and a vehicle window glass 10, and the vehicle window glass 10 is connected to the vehicle body 20. The vehicle window glass 10 may be a side window glass, a front window glass, a rear window glass, or a sunroof glass of the vehicle 100. Exemplarily, the rigidity of the vehicle window glass 10 may be 2.0 N / mm or more.

[0038] As can be understood, the car window glass 10 may be a flat plate, or the car window glass 10 may be a curved or arcuate surface. The shape of the car window glass 10 is not limited to the above-mentioned shapes, and may be any shape that meets the requirements of the use of the car window glass 10, and the embodiments of the present application do not have strict requirements for the shape of the car window glass 10.

[0039] 2, the car window glass 10 includes an outer layer glass 11, an inner layer glass 13, and an intermediate layer 12 connected between the outer layer glass 11 and the inner layer glass 13. As can be seen, the car window glass 10 is a laminated glass formed by laminating the outer layer glass 11, the intermediate layer 12, and the inner layer glass 13, so that when the vehicle is traveling at high speed, the car window glass 10 having the laminated structure has a better sound insulation effect against wind noise than single layer glass.

[0040] It should be noted that the purpose of FIG. 2 is only to illustrate the connection relationship between the outer layer glass 11, the intermediate layer 12, and the inner layer glass 13, and not to specifically limit the connection position, specific structure, and quantity of each device. The exemplary configuration of the embodiment of the present application does not specifically limit the car window glass 10. In other embodiments of the present application, the car window glass 10 may include more or fewer parts than those shown, or may combine some parts, or may separate some parts, or may have a different part arrangement. The illustrated parts can be realized by hardware, software, or a combination of software and hardware.

[0041] The thickness of the outer layer glass 11 may be within the range of 3 mm to 5 mm. Preferably, the thickness of the outer layer glass 11 may be within the range of 3.5 mm to 4.85 mm, for example, the thickness of the outer layer glass 11 may be 3.5 mm, 3.85 mm, or 4.85 mm, etc. As can be understood, the strength of the tempered glass is positively correlated with the thickness of the tempered glass. By having the thickness of the outer layer glass 11 within the range of 3 mm to 5 mm, the outer layer glass 11 can have sufficient mechanical strength and is not too thick, so that the compatibility of the car window glass 10 with the car body 20 and the transmittance of the car window glass 10 are not affected. Exemplarily, the outer layer glass 11 can be ultra-transparent low iron glass (also called ultra-clear glass), soda-lime glass, borosilicate glass, aluminosilicate glass, K-glass, etc.

[0042] 2 and 3 in combination, the outer layer glass 11 includes a first reinforced region 111 and a second reinforced region 112. The first reinforced region 111 is connected to the outside of the second reinforced region 112. The surface stress of the second reinforced region 112 is smaller than that of the first reinforced region 111. The first reinforced region 111 and the second reinforced region 112 can be understood as reinforced regions. Since the first reinforced region 111 and the second reinforced region 112 have different reinforcement degrees, the surface stress of the first reinforced region 111 can be larger than that of the second reinforced region 112. The first reinforced region 111 can be understood as a semi-reinforced region, and the second reinforced region 112 can be understood as a full reinforced region.

[0043] As can be seen, the car window glass 10 has a large rigidity and a small deformation because the outer layer glass 11 is reinforced. In the actual use process, the car window glass 10 is not easily broken by external forces due to its large rigidity, and can be adapted to more use scenes. After the car window glass 10 is damaged, the area of ​​the fragments formed in the second reinforced region 112 is larger than the area of ​​the fragments formed in the second reinforced region 112, and at the same time, the number of fragments in the second reinforced region 112 is smaller than the number of fragments in the first reinforced region 111 in the same area, and the fragments in the second reinforced region 112 are too fine to fall off, so that the car window glass 10 can maintain a relatively complete outline, thereby ensuring the independent space of the vehicle 100 as much as possible, making it difficult for the vehicle 100 to be invaded from the outside, and reducing the possibility of the vehicle being invaded from the outside and the inside of the vehicle being stolen. In addition, if the car window glass 10 is broken while driving, the car window glass 10 after being broken will not affect the driver's field of vision, ensuring the safety of driving.

[0044] For example, the surface stress of the first reinforced region 111 is 90 MPa or more. As can be seen, the fully reinforced first reinforced region 111 increases the strength of the part of the car window glass 10 that is fixedly attached to the door, and can ensure that the car window glass 10 is stably attached to the car body 20. The surface stress of the second reinforced region 112 may be in the range of 20 MPa to 70 MPa. As can be seen, the semi-reinforced second reinforced region 112 has the high strength characteristic of reinforced glass, and at the same time avoids the disadvantage that the fully reinforced glass is easily shattered as a whole after being broken. When the semi-reinforced second reinforced region 112 is broken, it can be broken radially and radially along the source of the crack, and generally does not expand the crack in the tangential direction, so that it can maintain its overall integrity without collapsing after being broken.

[0045] In the embodiment of the present application, the first reinforced region 111 can be connected to the mounting hole position of the car window glass 10 or to the lifter of the car window glass 10, so that the entire car window glass 10 has good mechanical strength, will not break after being damaged from the outside, and can effectively withstand external damage.

[0046] 2 and 3 in combination, in one possible embodiment, the car window glass 10 can be applied to a framed door. Specifically, the first reinforced area 111 is provided below the second reinforced area 112, and the first reinforced area 111 is used for fixed connection with a door lifter. After the car window glass 10 is installed in the car body 20, the boundary between the car window glass 10 and the door is the first boundary line 113. The first boundary line 113 may be the boundary line between the first reinforced area 111 and the second reinforced area 112. As can be seen, the first reinforced area 111 can increase the strength of the area of ​​the car window glass 10 that is fixedly connected to the door, and ensure a stable connection between the car window glass 10 and the car body 20.

[0047] 4 and 5 in combination, in another possible embodiment, the car window glass 10 can be applied to a frameless door. Specifically, the first reinforced region 111 is provided around the second reinforced region 112 so as to surround the second reinforced region 112. The first reinforced region 111 includes a first reinforced edge region 111b and a first reinforced fixing region 111a. The first reinforced fixing region 111a is connected to the first reinforced edge region 111b, the first reinforced fixing region 111a is located at the lower end of the second reinforced region 112, the first reinforced edge region 111b is located at the outer periphery of the second reinforced region 112, and the first reinforced fixing region 111a and the first reinforced edge region 111b together surround the second reinforced region 112.

[0048] Exemplarily, the area of ​​the second reinforced region 112 may occupy 10% to 90% of the total area of ​​the car window glass 10. Preferably, the area of ​​the second reinforced region 112 may occupy 30% to 90% of the total area of ​​the car window glass 10, and more preferably, the area of ​​the second reinforced region 112 may occupy 50% to 90% of the total area of ​​the car window glass 10, for example, the area of ​​the second reinforced region 112 may occupy 50%, 60%, 70%, 80%, or 90% of the total area of ​​the car window glass 10.

[0049] As can be seen, since the first reinforced edge region 111b is located at the edge of the outer periphery of the car window glass 10, the edge of the car window glass 10 has high strength and can protect the edge of the car window glass 10 that is not protected by a door frame. The first reinforced fixing region 111a can also reinforce the region of the car window glass 10 that is fixedly connected to the door. Specifically, after the car window glass 10 is installed on the car body 20, the boundary between the car window glass 10 and the door is the second boundary line 114, and the second boundary line 114 may be the boundary line between the first reinforced fixing region 111a and the second reinforced region 112. The first reinforced fixing region 111a allows the car window glass 10 to be stably connected to the car body 20 and is less likely to be broken.

[0050] Illustratively, referring again to FIG. 5, the width C of the first reinforced edge region 111b along the direction from the edge of the car window glass 10 to the center of the car window glass can be in the range of 50 mm to 100 mm (including 50 mm and 100 mm). A suitable total reinforced width can ensure a suitable area of ​​the second reinforced region 112 while ensuring the mechanical performance of the car window glass. Thus, after the car window glass 10 is broken, relatively few fragments are formed in the second reinforced region 112, which is favorable for maintaining a more intact car window glass 10, so that the vehicle 100 is more difficult to break into and the risk of theft is reduced.

[0051] In the embodiment of the present application, the intermediate layer 12 connects the outer layer glass 11 and the inner layer glass 13, and the entire car window glass 10 has a sandwich structure, which increases the strength of the car window glass 10, makes the car window glass 10 less likely to break, and improves its impact resistance performance compared to single-layer glass. The improved impact resistance performance can improve the safety performance of the vehicle 100, and also makes the car window glass 10 less likely to be damaged, thereby reducing maintenance costs. The material of the intermediate layer 12 can include polyvinyl butyral (PVB). Polyvinyl butyral has excellent flexibility and bendability.

[0052] In addition, when the outer layer glass 11 and the inner layer glass 13 are arranged in parallel, the thickness of the intermediate layer 12 is uniform. When the extending direction of the outer layer glass 11 and the extending direction of the inner layer glass 13 intersect, the thickness of the intermediate layer 12 is not uniform, and the intermediate layer 12 can have a structure with a gradually changing thickness. The thickness of the intermediate layer 12 can be flexibly adjusted according to the actual use scene of the car window glass 10, which is advantageous for adapting to the application needs of the car window glass 10 in multiple scenes.

[0053] The inner layer glass 13 may be a chemically strengthened aluminosilicate glass. As can be understood, the chemical strengthening process is to place the inner layer glass 13 in molten alkali salt and exchange the ions in the surface layer of the inner layer glass 13 with the ions in the molten salt. Due to the change in ion volume after the exchange, compressive stress can be formed on the two surfaces of the inner layer glass 13 and tensile stress can be formed inside, which has the effect of increasing the strength of the glass. After chemical strengthening, the inner layer glass 13 has a suitable surface stress and a depth of the stress layer, which plays a role in resisting the expansion and bending of the cracks, and can effectively increase the mechanical strength of the car window glass 10. After the aluminosilicate glass undergoes chemical strengthening, the depth of the stress layer can cover the depth of the cracks, which can effectively prevent the continuous expansion of the cracks, and thus improve the strength of the glass.

[0054] In one possible embodiment, the thickness of the inner glass layer 13 is less than or equal to 1.2 mm.

[0055] As can be understood, the outer layer glass 11 is preferably a thick glass because it needs high durability and impact resistance to cope with external obstacles. Meanwhile, the thickness of the inner layer glass 13 is relatively small. In order to meet the strength requirements of the glass, the inner layer glass 13 can be strengthened to increase its strength. In order to ensure that the inner layer glass 13 has sufficient strength and meets the requirement of weight reduction as much as possible, the total thickness of the inner and outer glass sheets is reduced.

[0056] For example, the inner layer glass 13 may be ultra-thin glass having a thickness of 1.1 mm or less. Compared with ordinary glass, the thinner the ultra-thin glass is, the more flexible it is, the lighter it is, and the more transparent it is, making it cleaner, brighter, and more beautiful. Therefore, setting the thickness of the inner layer glass in the range of 1.2 mm or less is advantageous for increasing the transparency of the car window glass 10 and reducing the weight of the car window glass 10.

[0057] In one possible embodiment, the surface stress of the inner layer glass 13 is in the range of 450 MPa to 850 MPa, inclusive. Preferably, the surface stress of the inner layer glass 13 may be in the range of 500 MPa to 750 MPa, inclusive of the end values ​​of 500 MPa and 750 MPa, for example the surface stress of the inner layer glass 13 may be 500 MPa, 600 MPa, 700 MPa or 750 MPa, etc. As can be seen, the surface stress can put the glass surface into a pre-compressive stress state, preventing cracks on the glass surface from expanding after being subjected to force, and improving the mechanical performance of the car glazing 10.

[0058] 6 and 7, the inner layer glass 13 has a stress layer 132 and a crack 131. The depth of the stress layer 132 of the inner layer glass 13 is within the range of 30 μm to 70 μm (including 30 μm and 70 μm). Preferably, the depth of the stress layer 132 of the inner layer glass 13 is within the range of 35 μm to 55 μm (including 35 μm and 55 μm), and for example, the depth of the stress layer 132 of the inner layer glass 13 can be 35 μm, 40 μm, 45 μm, 50 μm, or 55 μm. The depth of the stress layer 132 within the range of 35 μm to 55 μm can be greater than the depth to which the crack 131 of the inner layer glass 13 spreads, and the mechanical properties of the car window glass 10 can be improved.

[0059] The embodiment of the present application also conducted a breaking torque experiment on the position of the first reinforced region 111 of the car window glass 10 fixedly connected to the door. The experiment was conducted on 10 car window glass samples, which specifically include an outer layer glass 11 with a thickness of 3.5 mm, an inner layer glass 13 with a thickness of 1.1 mm, and an intermediate layer glass 12 with a thickness of 0.76 mm, which is made of sound insulation material. The test results are as follows:

[0060] [Table 1]

[0061] The experimental results show that none of the 10 car window glass samples are broken. As can be seen from Table 1, all of the car window glass samples meet the breaking torque requirement of 18N.m or more, and the experimental results show that the strength of the car window glass samples is acceptable. The car window glass 10 provided by the embodiment of the present application can meet the practical use.

[0062] Referring to Figure 8, the present application further provides one embodiment and two comparative examples to analyze the sound insulation performance of the embodiments of the present application. The sound insulation experiment data of the embodiment, comparative example 1 and comparative example 2 are as follows:

[0063] The car window glass 10 of the embodiment includes a 3.5 mm thick outer layer glass 11, a 1.1 mm thick inner layer glass 13, and a 0.76 mm thick intermediate layer 12 made of a sound insulating material. The car window glass of Comparative Example 1 is a conventional laminated glass including a 2.6 mm thick outer layer glass, a 2.6 mm thick inner layer glass, and a 0.76 mm thick intermediate layer made of a sound insulating material. The car window glass of Comparative Example 2 is another conventional laminated glass including a 2.1 mm thick outer layer glass, a 2.1 mm thick inner layer glass, and a 0.76 mm thick intermediate layer made of a sound insulating material.

[0064] Generally, the most unpleasant sound frequency range for the human hearing is 1000Hz to 6000Hz. Experimental results show that the sound insulation performance of the car window glass 10 provided in the present application is comparable to that of current laminated glass. The sound transmission loss of sound frequencies between 1000Hz and 6000Hz reaches about 35dB to 50dB. Experimental results show that the car window glass 10 has good sound insulation performance. The car window glass 10 provided in the embodiments of the present application meets the requirements for use.

[0065] The above describes the embodiments of the present application in detail, and the present specification uses specific examples to explain the principles and embodiments of the present application. The above description of the embodiments is for understanding the method and core idea of ​​the present application. In addition, those skilled in the art may make changes to the specific embodiments and application scope based on the idea of ​​the present application. In summary, the present specification should not be understood as limiting the present application.

Claims

1. The present invention relates to a glass substrate, comprising: an outer layer glass; an inner layer glass; and an intermediate layer connected between the outer layer glass and the inner layer glass, the outer layer glass comprising a first strengthened region and a second strengthened region, the first strengthened region being connected to an outside of the second strengthened region, and a surface stress of the first strengthened region being greater than a surface stress of the second strengthened region. A vehicle window glass characterized by the above.

2. The first reinforced region is provided around the second reinforced region so as to surround the second reinforced region.

2. A vehicle window glass according to claim 1.

3. The first reinforced region is provided on at least one side of the second reinforced region.

2. A vehicle window glass according to claim 1.

4. The area of ​​the second reinforced region occupies 10% to 90% of the total area of ​​the vehicle window glass; The vehicle window glass according to any one of claims 1 to 3.

5. The thickness of the inner layer glass is 1.2 mm or less.

5. A vehicle window glass according to claim 4.

6. The surface stress of the first reinforced region is 90 MPa or more.

6. A vehicle window glass according to claim 5.

7. The surface stress of the second reinforced region is in the range of 20 MPa to 70 MPa; 7. A vehicle window glass according to claim 6.

8. The thickness of the outer glass layer is within the range of 3 mm to 5 mm.

8. A vehicle window glass according to claim 7.

9. The inner layer glass is an aluminosilicate glass.

9. A vehicle window glass according to claim 8.

10. the surface stress of the inner layer glass is in the range of 450 MPa to 850 MPa; 10. A vehicle window glass according to claim 9.

11. the depth of the stress layer of the inner glass layer is within a range of 30 μm to 70 μm; 11. A vehicle window glass according to claim 10.

12. A vehicle body and a vehicle glazing according to any one of claims 1 to 11, wherein the vehicle glazing is connected to the vehicle body. A vehicle characterized by:

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