Vehicle window glass assembly and vehicle

Abstract

A vehicle window glass assembly (120), applied to a vehicle (100) and comprising vehicle window glass (10) and a cushioning film (20). The vehicle window glass (10) comprises an outer surface (101) facing the outside of the vehicle and an inner surface (102) facing the inside of the vehicle; the vehicle window glass (10) is further provided with a transparent area (102a) and a non-transparent area (102b) arranged around the transparent area (102a); the side of the vehicle window glass (10) facing the inside of the vehicle is provided with a shielding layer (12), the shielding layer (12) covering the non-transparent area (102b); the cushioning film (20) is arranged on at least one of the outer surface (101) or the inner surface (102); in the thickness direction of the vehicle window glass assembly (120), the projection of the cushioning film (20) on the vehicle window glass (10) covers at least part of the shielding layer (12). Also provided is a vehicle (100). The vehicle window glass assembly (120) and the vehicle (100) can improve the impact resistance of the vehicle window glass and reduce the breakage probability of the vehicle window glass.

Description

Vehicle window glass assembly and vehicle

[0001] The present application claims priority to the Chinese patent application No. 202411071428.5, filed on August 6, 2024, entitled "Vehicle window glass assembly and vehicle", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of glass, in particular to a vehicle window glass assembly and vehicle. BACKGROUND

[0003] In the existing vehicle, the vehicle window glass can provide a visible area for the passenger to observe the external environment of the vehicle. However, the impact resistance of the vehicle window glass is poor, and the vehicle window glass is prone to breakage when subjected to external force impact, which reduces the use reliability of the vehicle window glass and affects the user experience. SUMMARY

[0004] Embodiments of the present application provide a vehicle window glass assembly and vehicle, which can improve the impact resistance of the vehicle window glass and reduce the probability of breakage of the vehicle window glass.

[0005] In a first aspect, the present application provides a vehicle window glass assembly applied to a vehicle. The vehicle window glass assembly comprises a vehicle window glass, a shielding layer and a buffer film. The vehicle window glass comprises an outer surface facing the outside of the vehicle and an inner surface facing the inside of the vehicle. The vehicle window glass further comprises a transparent area and a non-transparent area surrounding the transparent area. The shielding layer is arranged on the side of the vehicle window glass facing the inside of the vehicle and covers the non-transparent area. The buffer film is arranged on at least one of the outer surface or the inner surface. In the thickness direction of the vehicle window glass assembly, the projection of the buffer film on the shielding layer covers at least part of the shielding layer.

[0006] The vehicle window glass has an edge tensile stress region, and the edge tensile stress region at least partially coincides with the area where the shielding layer is located. The buffer film covers at least the area where the maximum tensile stress in the edge tensile stress region is located.

[0007] The edge tensile stress region is located within a width interval of 0 to 120 mm at the edge of the vehicle window glass.

[0008] In the thickness direction of the vehicle window glass assembly, the projection of the buffer film on the vehicle window glass is located within the range where the shielding layer is located.

[0009] In the thickness direction of the vehicle window glass assembly, the projection of the buffer film on the shielding layer completely covers the shielding layer.

[0010] The buffer film completely covers the outer surface.

[0011] The buffer film comprises a bonding layer, the buffer film is connected to the surface of the vehicle window glass through the bonding layer, and the buffer film further comprises a release layer and a first protective layer.

[0012] The buffer film further comprises a second protective layer, and the second protective layer is arranged between the release layer and the bonding layer.

[0013] The thickness of the first protective layer and the thickness of the second protective layer are both between 30 μm and 150 μm.

[0014] The buffer film further comprises a bonding layer, and the bonding layer is arranged between the release layer and the outer surface.

[0015] The total thickness of the buffer film is greater than or equal to 100 μm.

[0016] The total thickness of the buffer film is between 165 μm and 250 μm.

[0017] The buffer film has a tear strength greater than or equal to 30 KN / m and a tensile strength greater than or equal to 10 MPa.

[0018] The vehicle window glass assembly has an external object impact resistance height greater than or equal to 600 mm.

[0019] The vehicle window glass assembly further comprises a functional film layer, and the projection of the buffer film on the functional film layer covers at least part of the edge of the functional film layer in the thickness direction of the vehicle window glass assembly.

[0020] The vehicle window glass is single-layer glass, and the buffer film is arranged on the surface of the single-layer glass facing the outside of the vehicle; or the vehicle window glass is single-layer glass, and the buffer film is arranged on the surface of the single-layer glass facing the inside of the vehicle; or the vehicle window glass comprises an outer pane, an inner pane and an intermediate layer, the shielding layer is arranged on at least one of the surface of the outer pane facing the inside of the vehicle and / or the surface of the inner pane facing the inside of the vehicle, the intermediate layer is arranged between the outer pane and the inner pane, and the buffer film is arranged on the surface of the outer pane facing the outside of the vehicle.

[0021] In a second aspect, the application further provides a vehicle comprising a vehicle body and the vehicle window glass assembly according to any one of the above, and the vehicle window glass assembly is mounted on the vehicle body.

[0022] The vehicle window glass assembly provided by the embodiments of the present application is provided with a buffer film on the outer surface or the inner surface of the vehicle window glass, and the buffer film covers the position on the vehicle window glass where breakage is prone to occur. When the buffer film is arranged on the outer surface of the vehicle window glass, the buffer film can make the vehicle window glass assembly resist the impact force formed by the impact object from the outside, so that the impact force from the outside on the vehicle window glass assembly is buffered and released. When the buffer film is arranged on the inner surface of the vehicle window glass, the buffer film can form further buffering and protection on the position where the edge of the vehicle window glass assembly is combined with the body panel of the vehicle, so as to avoid the breakage of the glass at the position where the edge of the vehicle window glass assembly is combined with the body panel of the vehicle due to the stress concentration at the edge of the glass during installation or subsequent use. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used by the embodiments of the present application will be described below.

[0024] FIG. 1 is a structural schematic view of a vehicle provided by the present application;

[0025] FIG. 2 is a sectional structural schematic view of a vehicle window glass assembly in a first embodiment in the vehicle shown in FIG. 1;

[0026] FIG. 3 is a sectional structural schematic view of a buffer film in the vehicle window glass assembly shown in FIG. 2;

[0027] FIG. 4 is a sectional structural schematic view of a vehicle window glass assembly in a second embodiment in the vehicle shown in FIG. 1;

[0028] FIG. 5 is a sectional structural schematic view of a vehicle window glass assembly in a third embodiment in the vehicle shown in FIG. 1;

[0029] FIG. 6 is a sectional structural schematic view of a vehicle window glass assembly in a fourth embodiment in the vehicle shown in FIG. 1;

[0030] FIG. 7 is a sectional structural schematic view of a vehicle window glass assembly in a fifth embodiment in the vehicle shown in FIG. 1;

[0031] FIG. 8 is a sectional structural schematic view of a vehicle window glass assembly in a sixth embodiment in the vehicle shown in FIG. 1;

[0032] FIG. 9 is a sectional structural schematic view of a vehicle window glass assembly in a seventh embodiment in the vehicle shown in FIG. 1;

[0033] FIG. 10 is a curve graph of average external object impact resistance height of the vehicle window glass assembly with different buffer film thicknesses provided by the present application.

[0034] The names corresponding to the reference signs in the drawings are as follows: vehicle 100, vehicle body 110, vehicle window glass assembly 120, vehicle window glass 10, buffer film 20, outer surface 101, inner surface 102, transparent area 102a, non-transparent area 102b, edge tensile stress area 101a, glass sheet 11, shielding layer 12, protective layer 21, release layer 22, adhesive layer 23, first protective layer 21a, second protective layer 21b, functional film layer 30, outer pane 13, inner pane 14, interlayer 15, first surface 131, second surface 132, third surface 141, fourth surface 142. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0036] Please refer to FIG. 1, which is a structural schematic diagram of a vehicle 100 provided by the present application.

[0037] The vehicle 100 provided by the embodiments of the present application can be, but is not limited to, a sedan, a truck, a pickup truck, a business car, a bus, an off-road vehicle, and the present application does not make any limitation on this. In the present embodiment, the vehicle 100 can include a vehicle body 110 and a vehicle window glass assembly 120, and the vehicle window glass assembly 120 is installed on the vehicle body 110. The vehicle window glass assembly 120 can be used as a front windshield, or can be used as a sunroof glass, a rear windshield or a quarter window glass, and the embodiments of the present application do not make any limitation on this.

[0038] Please refer to FIG. 2, which is a sectional structural schematic diagram of the vehicle window glass assembly 120 in the first embodiment of the vehicle 100 shown in FIG. 1.

[0039] The vehicle window glass assembly 120 includes a vehicle window glass 10 and a buffer film 20, and the buffer film 20 is stacked on the vehicle window glass 10 and connected to the vehicle window glass 10. The vehicle window glass 10 has a transparent area 102a and a non-transparent area 102b arranged around the transparent area 102a. The transparent area 102a is used to provide a visible area for a driver or a sensor to observe the environment outside the vehicle or collect data of the environment outside the vehicle. The decorative and functional structures of the vehicle window glass 10 can be installed on the non-transparent area 102b. The non-transparent area 102b can shield the decorative and functional structures of the vehicle window glass 10, so as to improve the overall appearance of the vehicle window glass 10 and protect the decorative and functional structures on the vehicle window glass 10 from damage caused by ultraviolet aging. The non-transparent area 102b is formed by arranging a shielding layer 12 on the vehicle window glass 10, and the shielding layer 12 reduces the visible light transmittance TL of the non-transparent area 102b to below 10%, and further reduces it to below 5% or below 1%.

[0040] The vehicle window glass 10 further includes an outer surface 101 facing the outside of the vehicle 100 and an inner surface 102 facing the inside of the vehicle 100. In the present embodiment, the edge portion of the outer surface 101 of the vehicle window glass 10 has an edge tensile stress region 101a. The edge tensile stress region is located within a width interval of 0 to 120 mm from the edge of the vehicle window glass 10. For example, the edge tensile stress region 101a can be located within a width interval of 5 mm to 50 mm from the edge of the vehicle window glass 10, or within a width interval of 5 mm to 60 mm, or within a width interval of 10 mm to 120 mm. The region where the maximum tensile stress of the edge tensile stress region 101a is located can be within a width interval of 5 mm to 50 mm from the edge of the vehicle window glass 10. It should be noted that the above width interval is an interval extending from the edge of the vehicle window glass 10 as the 0 mm position to the center of the vehicle window glass 10.

[0041] In addition, in the edge portion of the outer surface 101 of the vehicle window glass 10, there is a compressive stress region closer to the edge of the vehicle window glass 10 than the edge tensile stress region 101a. For example, the compressive stress region is located within a width interval of 0 to 25 mm from the edge of the vehicle window glass 10.

[0042] In the present embodiment, the vehicle window glass 10 is a single-layer glass. The thickness of the vehicle window glass 10 is between 1.6 mm and 6.0 mm. In some embodiments of the present application, the single-layer glass can be a tempered glass. The visible light transmittance TL of the vehicle window glass 10 can be between 2% and 90%. For example, the vehicle window glass 10 can be a transparent glass with TL≥70%, or a colored glass with visible light transmittance TL<70%. Specifically, the vehicle window glass 10 includes a glass sheet 11 and a shading layer 12. The surface of the glass sheet 11 facing the outside of the vehicle 100 is the outer surface 101 of the vehicle window glass 10, and the surface of the glass sheet 11 facing the inside of the vehicle 100 is the inner surface 102 of the vehicle window glass 10. The glass sheet 11 can be made of inorganic glass material and / or organic glass material. For example, the glass sheet 11 can be made of one or more of soda-lime glass, borosilicate glass, alumino-silicate glass, polymethyl acrylate, or polycarbonate. For example, the glass sheet 11 is made of soda-lime glass material.

[0043] The shielding layer 12 is arranged on the side of the vehicle window glass 10 facing the interior of the vehicle 100 and covers the non-transparent area 102b. In the embodiment, the shielding layer 12 is connected to the side of the glass sheet 11 facing the interior of the vehicle 100. For example, the shielding layer 12 can be formed by printing a dark ceramic ink to the non-transparent area 102b of the inner surface 102 of the glass sheet 11 by a screen printing process or the like. The shielding layer 12 can be used to shield the structures such as the decorative parts and functional parts on the vehicle window glass 10, so as to protect the structures such as the decorative parts and functional parts on the vehicle window glass 10 from aging or damage due to ultraviolet radiation and the like. Meanwhile, the shielding layer 12 can also increase the aesthetic appearance of the vehicle window glass 10.

[0044] In the embodiment, the vehicle window glass assembly 120 further comprises a functional film layer 30. Specifically, the functional film layer 30 is arranged on the side of the shielding layer 12 away from the vehicle window glass 10. For example, the functional film layer 30 can be formed on the side of the shielding layer 12 away from the vehicle window glass 10 by a magnetron sputtering coating process. The functional film layer 30 can have the functions of heat insulation, ultraviolet protection, anti-glare and the like.

[0045] Please refer to FIG. 2 and FIG. 3, and FIG. 3 is a sectional structure schematic view of the buffer film 20 in the vehicle window glass assembly 120 shown in FIG. 2.

[0046] The contact of the shielding layer 12, the functional film layer 30 or the glass with the mold during the complete forming process will cause the glass edge position to form a tensile stress concentration to a certain extent, and further weaken the strength of the glass edge area. In addition, the shielding layer 12 or the functional film layer 30 will also further weaken the glass surface area to a certain extent during the heating forming process. Therefore, the buffer film 20 is arranged on at least one of the outer surface 101 or the inner surface 102 of the vehicle window glass 10.

[0047] As shown in FIG. 2, the projection of the buffer film 20 on the vehicle window glass 10 is located within the range of the shielding layer 12. In some further embodiments, the buffer film 20 at least covers the area where the maximum tensile stress of the edge tensile stress area 101a of the outer surface 101 is located. In some embodiments, the buffer film 20 can also completely cover the entire edge tensile stress area 101a.

[0048] In addition, in some embodiments, the buffer film 20 can also completely cover the entire outer surface 101 or the entire inner surface 102.

[0049] Further, for the vehicle window glass 10 provided with the functional film layer 30, the projection of the buffer film 20 on the functional film layer 30 can also cover part of the edge of the functional film layer 30. The edge of the functional film layer 30 generally lies within a range of 5mm to 20mm from the edge of the glass, because the edge of the functional film layer 30 needs to be removed from the glass surface for the purpose of preventing oxidation, etc.

[0050] When the buffer film 20 is arranged on the outer surface 101 of the vehicle window glass 10, the buffer film 20 can make the vehicle window glass assembly 120 resist the impact force from the external impact object, so that the impact force from the outside on the vehicle window glass assembly 120 is buffered and released. When the buffer film 20 is arranged on the inner surface 102 of the vehicle window glass 10, the buffer film 20 can form further buffering and protection at the position where the edge of the vehicle window glass assembly 120 is combined with the body panel, so as to avoid the glass from being broken at the position where the edge of the vehicle window glass assembly 120 is combined with the body panel, which is the stress concentration position of the glass edge.

[0051] In the embodiment, the buffer film 20 is located in the non-transparent area 102b of the vehicle window glass 10 and is connected to the glass sheet 11 of the vehicle window glass 10. The projection of the buffer film 20 on the vehicle window glass 10 covers at least part of the shielding layer 12 in the thickness direction of the vehicle window glass assembly 120. Specifically, in the first embodiment, the projection of the buffer film 20 on the vehicle window glass 10 covers part of the shielding layer 12 in the thickness direction of the vehicle window glass assembly 120.

[0052] In the embodiment, the total thickness of the buffer film 20 is greater than or equal to 100μm. For example, the total thickness of the buffer film 20 can be between 165μm and 250μm. The visible light transmittance TL of the buffer film 20 is greater than or equal to 90%, and the haze is less than or equal to 1%. In other embodiments, the total thickness, visible light transmittance, haze, etc. of the buffer film 20 can also be set to other values based on actual needs, which are not limited in the present application.

[0053] The water contact angle of the buffer film 20 is greater than or equal to 90°. It should be understood that the contact angle refers to the angle formed by the two lines tangent to the solid surface at the air-liquid-solid three-phase contact point, which represent the solid-liquid interface and the liquid-gas interface, respectively, when a drop of liquid falls on a solid plane. This angle is a key parameter for measuring the wettability of the liquid on the solid surface, and its size reflects the strength of the interaction between the liquid molecules and the solid surface. By making the water contact angle of the buffer film 20 greater than 90°, the buffer film 20 can be made hydrophobic, so that water droplets are not easily wetted by the buffer film 20, ensuring that the buffer film 20 has good surface permeability resistance, thereby preventing the buffer film 20 from accumulating water, and thus ensuring the normal use of the vehicle window glass assembly 120.

[0054] In addition, it is more advantageous that the tearing strength of the buffer film 20 is greater than or equal to 30 KN / m, and the tensile strength is greater than or equal to 10 MPa, to ensure that the buffer film 20 has a large structural strength.

[0055] It should be understood that when the vehicle window glass 10 is impacted by an external object, the shielding layer 12 or the edge tensile stress region 101a is more likely to break, thereby causing the vehicle window glass 10 to break as a whole. In the present embodiment, by providing the buffer film 20 on the vehicle window glass 10 and making the buffer film 20 cover at least part of the area where the shielding layer 12 is located, when the vehicle window glass assembly 120 is impacted by an external object, the buffer film 20 can first buffer and release the impact force. After being buffered and released by the buffer film 20, the impact force is weakened or even completely absorbed, thereby avoiding the vehicle window glass 10 from breaking, which helps to improve the impact resistance of the vehicle window glass 10 and reduce the probability of the vehicle window glass 10 breaking.

[0056] In addition, in the thickness direction of the vehicle window glass assembly 120, the projection of the buffer film 20 on the functional film layer 30 covers at least part of the functional film layer 30. Specifically, in the first embodiment, in the thickness direction of the vehicle window glass assembly 120, the projection of the buffer film 20 on the functional film layer 30 covers at least part of the edge of the functional film layer 30. It should be understood that when the functional film layer 30 is coated on the vehicle window glass 10, high-temperature sintering is usually performed on the vehicle window glass 10, which reduces the structural strength of the vehicle window glass 10. By providing the buffer film 20 on the outer surface 101 of the vehicle window glass 10 and making the buffer film 20 cover at least part of the functional film layer 30, when the vehicle window glass 10 is impacted by an external object, the buffer film 20 can protect the vehicle window glass 10, so that the vehicle window glass 10 is not easily broken when impacted by an external object, thereby also helping to reduce the probability of the vehicle window glass 10 breaking.

[0057] Specifically, the buffer film 20 includes a protective layer 21, a release layer 22 and an adhesive layer 23 arranged in sequence. The buffer film 20 is connected to the surface of the vehicle window glass 10 through the adhesive layer 23, and the release layer 22 is arranged on the side of the vehicle window glass 10 facing the outside of the vehicle 100. The release layer 22 can buffer and release the impact force received by the buffer film 20. In this embodiment, the release layer 22 is made of a thermoplastic material. For example, the release layer 22 can be made of a material such as polyurethane (PU), polyvinyl chloride (PVC), thermoplastic urethane (TPU), or thermoplastic hydrocarbon (TPH) that has properties such as toughness, weather resistance, and impact resistance.

[0058] In this embodiment, the thickness of the protective layer 21 is between 30 μm and 150 μm. For example, the protective layer 21 can be made of polyethylene terephthalate (PET) material. In other embodiments, the protective layer 21 can also be made of other materials that have properties such as impermeability, creep resistance, fatigue resistance, and friction resistance, and the embodiments of the present application do not limit this.

[0059] In this embodiment, the protective layer 21 has two. Along the thickness direction of the buffer film 20, the two protective layers 21 are respectively located on the opposite sides of the release layer 22 and are connected to the release layer 22. The two protective layers 21 are respectively a first protective layer 21a and a second protective layer 21b. The thickness of the first protective layer 21a and the thickness of the second protective layer 21b are both between 30 μm and 150 μm. Among them, the first protective layer 21a is located on the surface of the release layer 22 away from the vehicle window glass 10.

[0060] In this arrangement, the first protective layer 21a and the second protective layer 21b can form a package for the release layer 22. When the vehicle window glass assembly 120 is impacted by external force, the first protective layer 21a can first release and buffer the impact force, and then transmit the impact force to the release layer 22, so as to prevent the release layer 22 of the buffer film 20 from being directly impacted by external force, thereby helping to prolong the service life of the release layer 22. Then, the impact force is further buffered and released by the second protective layer 21b and then transmitted to the vehicle window glass 10, so as to be able to reduce the impact force acting on the vehicle window glass 10, and thus be able to improve the impact resistance of the vehicle window glass 10 and reduce the probability of breakage of the vehicle window glass 10.

[0061] The adhesive layer 23 is arranged between the release layer 22 and the outer surface 101 of the vehicle window glass 10. Specifically, the adhesive layer 23 is connected between the second protective layer 21b and the outer surface 101 or the inner surface 102 of the vehicle window glass 10, so as to realize the joint between the buffer film 20 and the vehicle window glass 10.

[0062] Referring to FIG. 4, FIG. 4 is a schematic diagram of a cross-sectional structure of the vehicle window glass assembly 120 in the second embodiment in the vehicle 100 shown in FIG. 1.

[0063] The vehicle window glass assembly 120 shown in the embodiment is different from the vehicle window glass assembly 120 shown in the first embodiment in that the projection of the buffer film 20 on the vehicle window glass 10 completely covers the shielding layer 12 in the thickness direction of the vehicle window glass assembly 120. That is, the projection of the buffer film 20 on the vehicle window glass 10 completely covers the non-transparent area 102b in the thickness direction of the vehicle window glass assembly 120.

[0064] It should be understood that the shielding layer 12 arranged on the non-transparent area 102b of the vehicle window glass 10 reduces the structural strength of the non-transparent area 102b of the vehicle window glass 10, causing the non-transparent area 102b to be easily broken when the vehicle window glass assembly 120 is impacted by an external object, thereby causing the vehicle window glass 10 to be broken as a whole. In the embodiment, the buffer film 20 is arranged on the vehicle window glass 10, and the projection of the buffer film 20 on the vehicle window glass 10 completely covers the non-transparent area 102b. When the vehicle window glass assembly 120 is impacted by an external object, the impact force acts on the buffer film 20 first, and the buffer film 20 can buffer and release the impact force at this time. After being buffered and released by the buffer film 20, the impact force is weakened. When the weakened impact force is transmitted to the non-transparent area 102b of the vehicle window glass 10, the non-transparent area 102b of the vehicle window glass 10 is not easily broken, thereby avoiding the vehicle window glass 10 from being broken, and further helping to improve the impact resistance of the vehicle window glass 10 and reduce the probability of the vehicle window glass 10 being broken.

[0065] Referring to FIG. 5, FIG. 5 is a schematic diagram of a cross-sectional structure of the vehicle window glass assembly 120 in the third embodiment in the vehicle 100 shown in FIG. 1.

[0066] The vehicle window glass assembly 120 shown in the embodiment is different from the vehicle window glass assembly 120 shown in the first embodiment in that the buffer film 20 completely covers the outer surface 101 of the vehicle window glass 10. With this arrangement, when any position of the vehicle window glass assembly 120 is impacted by an external force, the buffer film 20 can protect the vehicle window glass 10 as a whole, so that the impact force acting on the vehicle window glass 10 is reduced, thereby realizing the buffering and releasing of the impact force acting on the vehicle window glass 10 as a whole, avoiding the vehicle window glass 10 from being broken, and further improving the impact resistance of the vehicle window glass 10 and reducing the probability of the vehicle window glass 10 being broken.

[0067] Referring to FIG. 6, FIG. 6 is a schematic diagram of a cross-sectional structure of the vehicle window glass assembly 120 in the fourth embodiment in the vehicle 100 shown in FIG. 1.

[0068] The vehicle window glass assembly 120 shown in the present embodiment is different from the vehicle window glass assembly 120 shown in the first embodiment described above in that the buffer film 20 completely covers the inner surface 102 of the vehicle window glass 10. With this arrangement, when any position of the vehicle window glass assembly 120 is impacted by an external force, the buffer film 20 can further buffer and protect the position where the edge of the vehicle window glass assembly 120 is combined with the vehicle body panel, so as to avoid the position where the edge of the vehicle window glass assembly 120 is combined with the vehicle body panel from being located at the stress concentration position of the edge of the vehicle window glass 10, thereby preventing the vehicle window glass 10 from being broken during installation or subsequent use.

[0069] Referring to FIG. 7, FIG. 7 is a schematic diagram of a cross-sectional structure of the vehicle window glass assembly 120 in the fifth embodiment in the vehicle 100 shown in FIG. 1.

[0070] The vehicle window glass assembly 120 shown in the present embodiment is different from the vehicle window glass assembly 120 shown in the first embodiment described above in that the vehicle window glass 10 is a laminated glass. In the present embodiment, the vehicle window glass 10 includes an outer sheet glass 13, an inner sheet glass 14, an intermediate layer 15, and a shielding layer 12. The outer sheet glass 13 and the inner sheet glass 14 are spaced apart and arranged opposite to each other. The intermediate layer 15 is arranged between the outer sheet glass 13 and the inner sheet glass 14. The shielding layer 12 is arranged on a side of the outer sheet glass 13 facing the inside of the vehicle 100.

[0071] In the present embodiment, the outer sheet glass 13 includes a first surface 131 and a second surface 132. The first surface 131 and the second surface 132 are arranged opposite to each other in the thickness direction of the outer sheet glass 13. It should be noted that, in the fifth embodiment, the first surface 131 of the outer sheet glass 13 is the outer surface 101 of the vehicle window glass 10. That is, the edge portion of the first surface 131 has the edge tensile stress region 101a. The inner sheet glass 14 includes a third surface 141 and a fourth surface 142. The third surface 141 and the fourth surface 142 are arranged opposite to each other in the thickness direction of the inner sheet glass 14. The third surface 141 is arranged toward the second surface 132. It should be noted that, in the fifth embodiment, the fourth surface 142 of the inner sheet glass 14 is the inner surface 102 of the vehicle window glass 10.

[0072] The intermediate layer 15 is disposed between the second surface 132 and the third surface 141. The intermediate layer 15 is used to bond the outer pane 13 and the inner pane 14. The intermediate layer 15 can be a colored thermoplastic polymer film or a transparent thermoplastic polymer film. In some embodiments, the intermediate layer 15 has a visible light transmittance of 0% to 90%. In some embodiments, when the vehicle window glass assembly 120 is a sunroof, the intermediate layer 15 has a visible light transmittance of 2% to 10%.

[0073] In some embodiments, the shielding layer 12 has two layers. In some embodiments, one layer of the shielding layer 12 is disposed on the non-transparent area 102b of the second surface 132, and the other layer of the shielding layer 12 is disposed on the non-transparent area 102b of the fourth surface 142. In some embodiments, the shielding layer 12 can be printed on the second surface 132 of the outer pane 13 and the fourth surface 142 of the inner pane 14 by screen printing or other processes. In other embodiments, one layer of the shielding layer 12 is disposed on the non-transparent area 102b of the second surface 132, and the other layer of the shielding layer 12 is disposed on the non-transparent area 102b of the third surface 141. In other embodiments, one layer of the shielding layer 12 is disposed on the non-transparent area 102b of the third surface 141, and the other layer of the shielding layer 12 is disposed on the non-transparent area 102b of the fourth surface 142. In other embodiments, the shielding layer 12 can be disposed on only one of the second surface 132, the third surface 141, or the fourth surface 142.

[0074] In other embodiments, a composite multi-layer film structure can be disposed between the outer pane 13 and the inner pane 14 of the vehicle window glass 10. For example, a polymer dispersed liquid crystal (PDLC) film, an electrochromism (EC) film, or a liquid crystal film having a light adjusting function can be disposed between the outer pane 13 and the inner pane 14. In other embodiments, a film layer structure capable of achieving an ambient light function can be disposed between the outer pane 13 and the inner pane 14. In other embodiments, a film layer structure capable of collecting and utilizing solar energy can be disposed between the outer pane 13 and the inner pane 14.

[0075] In the embodiment, the buffer film 20 is connected to the first surface 131 of the outer pane 13 and covers the edge tension stress region 101a. It should be understood that when the vehicle window glass 10 is impacted by an external object, the impact force will first act on the first surface 131 of the outer pane 13. After being impacted by the external object, the edge tension stress region 101a of the first surface 131 is prone to breakage, thereby causing the vehicle window glass 10 to break as a whole. In the embodiment, by arranging the buffer film 20 on the first surface 131 of the outer pane 13 and making the buffer film 20 cover at least the edge tension stress region 101a of the first surface 131, when the vehicle window glass assembly 120 is impacted by an external object, the buffer film 20 can first buffer and release the impact force. After being buffered and released by the buffer film 20, the impact force is weakened. When the weakened impact force is transmitted to the edge tension stress region 101a of the vehicle window glass 10, the edge tension stress region 101a of the first surface 131 of the outer pane 13 is not prone to breakage, thereby avoiding the vehicle window glass 10 from breaking, and further helping to improve the impact resistance of the vehicle window glass 10 and reduce the probability of the vehicle window glass 10 from breaking.

[0076] In addition, the functional film layer 30 can be arranged on any one of the second surface 132, the third surface 141 or the fourth surface 142. In the thickness direction of the vehicle window glass assembly 120, the projection of the buffer film 20 on the functional film layer 30 covers at least part of the edge of the functional film layer 30. It can be understood that when the functional film layer 30 is coated on the vehicle window glass 10, high-temperature sintering is usually performed on the vehicle window glass 10, which reduces the structural strength of the vehicle window glass 10. By arranging the buffer film 20 on the outer surface 101 of the vehicle window glass 10 and making the buffer film 20 cover at least part of the functional film layer 30, when the vehicle window glass 10 is impacted by an external object, the buffer film 20 can protect the vehicle window glass 10, so that the vehicle window glass 10 is not prone to breakage when impacted by an external object, thereby also helping to reduce the probability of the vehicle window glass 10 from breaking.

[0077] Please refer to FIG. 8, which is a sectional structure schematic view of the vehicle window glass assembly 120 in the sixth embodiment in the vehicle 100 shown in FIG. 1.

[0078] The vehicle window glass assembly 120 shown in the embodiment is different from the vehicle window glass assembly 120 shown in the fourth embodiment described above in that, in the thickness direction of the vehicle window glass assembly 120, the projection of the buffer film 20 on the vehicle window glass 10 completely covers the shielding layer 12. That is, in the thickness direction of the vehicle window glass assembly 120, the projection of the buffer film 20 on the vehicle window glass 10 completely covers the non-transparent region 102b.

[0079] It should be appreciated that the shielding layer 12 provided on the non-transparent area 102b of the vehicle window glass 10 reduces the structural strength of the non-transparent area 102b of the vehicle window glass 10, so that the non-transparent area 102b of the vehicle window glass 10 is easily broken when the vehicle window glass 10 is impacted by an external object, thereby causing the vehicle window glass 10 to be broken as a whole. In the embodiment, the buffer film 20 is provided on the vehicle window glass 10, and the projection of the buffer film 20 on the vehicle window glass 10 completely covers the non-transparent area 102b. When the vehicle window glass assembly 120 is impacted by an external object, the impact force is first applied to the buffer film 20, and the buffer film 20 can first buffer and release the impact force. After being buffered and released by the buffer film 20, the impact force is weakened. When the weakened impact force is transmitted to the non-transparent area 102b of the vehicle window glass 10, the non-transparent area 102b of the vehicle window glass 10 is not easily broken, thereby avoiding the vehicle window glass 10 from being broken, and further helping to improve the impact resistance of the vehicle window glass 10 and reduce the probability of the vehicle window glass 10 being broken.

[0080] Referring to FIG. 9, FIG. 9 is a schematic view of a cross-sectional structure of the vehicle window glass assembly 120 in the seventh embodiment of the vehicle 100 shown in FIG. 1.

[0081] The vehicle window glass assembly 120 shown in the embodiment is different from the vehicle window glass assembly 120 shown in the fourth embodiment described above in that the buffer film 20 completely covers the first surface 131 of the outer pane glass 13. That is, the buffer film 20 completely covers the outer surface 101 of the vehicle window glass 10. With this arrangement, when any position of the vehicle window glass assembly 120 is impacted by an external force, the buffer film 20 can protect the vehicle window glass 10 as a whole, so that the impact force acting on the vehicle window glass 10 is reduced, thereby achieving buffering and releasing of the impact force acting on the vehicle window glass 10 as a whole, avoiding the vehicle window glass 10 from being broken, and further improving the impact resistance of the vehicle window glass 10 and reducing the probability of the vehicle window glass 10 being broken.

[0082] Referring to FIG. 10, FIG. 10 is a curve graph of average external object impact resistance height of the vehicle window glass assembly 120 with different thicknesses of the buffer film 20 provided in the present application, wherein a 3.2g sharp object (3.2g diamond) is selected for drop test, the drop impact surface is the outer surface, and the maximum height at which the vehicle window glass assembly 120 can withstand the drop without being broken is recorded as the external object impact resistance height.

[0083] In this embodiment, the foreign object impact resistance height of the vehicle window glass assembly 120 is between 600 mm and 1700 mm. Among them, the thickness of the buffer film 20 is an important factor affecting the foreign object impact resistance performance of the vehicle window glass assembly 120. As follows, the thickness of the buffer film 20 will be changed, and the foreign object impact resistance ability of the corresponding vehicle window glass assembly 120 will be tested. Among them, the impact point position of the vehicle window glass assembly 120 for foreign object impact resistance ability test is located in the edge tensile stress region 101a of the outer pane 13.

[0084] The specific description is as follows:

[0085] Prepare the outer pane 13, inner pane 14, interlayer 15 and buffer film 20 in the comparative example and examples 1-3. The thickness of the outer pane 13 and the inner pane 14 selected in the comparative example and examples 1-3 is 2.1 mm, and the thickness of the interlayer 15 is 0.76 mm. Among them, the thickness of the buffer film 20 in the comparative example is 0, the thickness of the buffer film 20 in example 1 is 165 μm, the thickness of the buffer film 20 in example 2 is 185 μm, and the thickness of the buffer film 20 in example 3 is 235 μm. The average foreign object impact resistance height of the above comparative example and examples 1-3 is measured, and the difference between the average foreign object impact resistance height of examples 1-3 and the comparative example is calculated, and the experimental results are shown in Figure 9 and Table 1.

[0086] It should be noted that the number of vehicle window glass assemblies 120 in the comparative example and examples 1-3 is three. The "average foreign object impact resistance height" of the comparative example in Table 1 refers to the average value of the foreign object impact resistance height of all impact points of the three vehicle window glass assemblies 120 in the comparative example, and the "average foreign object impact resistance height" of examples 1-3 can be understood in the same way.

[0087] Table 1

[0088] According to the experimental results, compared with the comparative example, the average foreign object impact resistance height of examples 1-3 is obviously improved. This shows that the buffer film 20 arranged in the edge tensile stress region 101a of the outer surface 101 of the vehicle window glass 10 can obviously improve the foreign object impact resistance ability of the vehicle window glass 10, thereby effectively reducing the probability of breakage of the vehicle window glass 10 when impacted by foreign objects. At the same time, with the increase of the thickness of the buffer film 20, the average foreign object impact resistance height of examples 1-3 also gradually increases. This shows that the foreign object impact resistance ability of the vehicle window glass 10 is positively correlated with the thickness of the buffer film 20.

[0089] In the vehicle window glass assembly 120 provided by the embodiment of the present application, the buffer film 20 is arranged on the outer surface 101 of the vehicle window glass 10 and covers the position on the vehicle window glass 10 where the breakage is prone to occur. When the vehicle window glass assembly 120 is impacted by an external object, the buffer film 20 can first buffer and release the impact force, and then transmit the impact force to the vehicle window glass 10, so that the impact force received by the vehicle window glass 10 is weakened, thereby avoiding the breakage of the vehicle window glass 10, and further improving the impact resistance of the vehicle window glass 10 and reducing the probability of breakage of the vehicle window glass 10.

[0090] The above describes the embodiments of the present application in detail, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the above description of the present application should not be understood as a limitation.

Claims

1. A vehicle window glass assembly for use in a vehicle, characterized by comprising: The vehicle window glass includes an outer surface facing the outside of the vehicle and an inner surface facing the inside of the vehicle, and has a transparent region and a non-transparent region provided around the transparent region. The vehicle window glass has a shielding layer on the side facing the inside of the vehicle, and the shielding layer covers the non-transparent region. The cushioning film is provided on at least one of the outer surface or the inner surface, and the projection of the cushioning film on the vehicle window glass in the thickness direction of the vehicle window glass assembly covers at least part of the shielding layer.

2. The vehicle glazing assembly of claim 1, wherein, The vehicle window glass has an edge tension stress region at least partially coinciding with the region where the shielding layer is located, and the cushioning film covers at least the region where the maximum tension stress in the edge tension stress region is located.

3. The vehicle glazing assembly of claim 2, wherein, The edge tension stress region is located within a width interval of 0-120 mm from the edge of the vehicle window glass.

4. The vehicle glazing assembly of claim 3, wherein, The edge tension stress region is located within a width interval of 5-50 mm, or 5-60 mm, or 10-120 mm from the edge of the vehicle window glass.

5. The vehicle glazing assembly of claim 2, wherein, The region where the maximum tension stress in the edge tension stress region is located is within a width interval of 5-50 mm from the edge of the vehicle window glass.

6. The vehicle glazing assembly of claim 2, wherein, There is also a compressive stress region closer to the edge of the vehicle window glass relative to the edge tension stress region, and the compressive stress region is located within a width interval of 0-25 mm from the edge of the vehicle window glass.

7. The vehicle glazing assembly of claim 1, wherein, The projection of the cushioning film on the vehicle window glass in the thickness direction of the vehicle window glass assembly is within the range where the shielding layer is located.

8. The vehicle glazing assembly of claim 1, wherein, The projection of the cushioning film on the vehicle window glass in the thickness direction of the vehicle window glass assembly completely covers the shielding layer.

9. The vehicle glazing assembly of claim 1, wherein, The cushioning film completely covers the outer surface or the inner surface.

10. The vehicle glazing assembly of any one of claims 1 to 9, wherein, The cushioning film includes an adhesive layer connecting the cushioning film to the surface of the vehicle window glass, and further includes a release layer and a first protective layer stacked in sequence on the adhesive layer.

11. The glazing assembly of claim 10, wherein, The cushioning film further includes a second protective layer located between the release layer and the adhesive layer.

12. The glazing assembly of claim 11, wherein, The thickness of the first protective layer and the thickness of the second protective layer are both between 30 μm and 150 μm.

13. The vehicle glazing assembly of claim 1, wherein, The total thickness of the cushioning film is greater than or equal to 100 μm.

14. The vehicle glazing assembly of claim 13, wherein, The total thickness of the cushioning film is between 165 μm and 250 μm.

15. The vehicle glazing assembly of claim 1, wherein, The tear strength of the cushioning film is greater than or equal to 30 KN / m, and the tensile strength is greater than or equal to 10 MPa.

16. The vehicle glazing assembly of claim 1, wherein, The foreign object impact resistance height of the vehicle window glass assembly is greater than or equal to 600 mm.

17. The vehicle glazing assembly of claim 1, wherein, The vehicle window glass assembly further includes a functional film layer, and the projection of the cushioning film on the functional film layer in the thickness direction of the vehicle window glass assembly covers at least part of the edge of the functional film layer.

18. The vehicle glazing assembly of claim 1, wherein, The shielding layer has a visible light transmittance TL of the non-transparent region of 10% or less, or 5% or less, or 1% or less.

19. The vehicle glazing assembly of any one of claims 1 to 17, wherein, The vehicle window glass is a single-layer glass, and the cushioning film is provided on the surface of the single-layer glass facing the outside of the vehicle. Alternatively, the vehicle window glass is a single layer glass, and the buffer film is arranged on a surface of the single layer glass facing the inside of the vehicle; Alternatively, the vehicle window glass comprises an outer pane, an inner pane and an intermediate layer, the shielding layer is arranged on at least a surface of the outer pane facing the inside of the vehicle and / or a surface of the inner pane facing the inside of the vehicle, and the intermediate layer is arranged between the outer pane and the inner pane, and the buffer film is arranged on a surface of the outer pane facing the outside of the vehicle.

20. A vehicle characterized by comprising: A vehicle comprising a vehicle body and a vehicle window glass assembly as claimed in any one of claims 1 to 19, the vehicle window glass assembly being mounted to the vehicle body.

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