Automotive glass, method for manufacturing the same, and intelligent connected vehicle

Abstract

The present invention provides an in-vehicle glass including a glass, an adhesive layer, and an antenna module adhered to the glass by the adhesive layer, or further including a bracket adhered to the glass by the adhesive layer and to which the antenna module is fastened, wherein the adhesive layer is distributed in the form of short lines in the edge region of the bottom surface of the antenna module or the bracket, and a manufacturing method thereof and an intelligent connected vehicle. Compared with the prior art method of obtaining an in-vehicle glass by adhering an antenna module to the glass by applying the adhesive over the entire surface, the present invention changes the application method of the adhesive, that is, by dot-applying the antenna module or the bracket to the glass, within a certain frequency range, the gain of the antenna module in the in-vehicle glass according to the present invention is significantly improved.

Description

Technical Field

[0001] (Cross - reference to related applications) This application claims the priority of a Chinese patent application with an application number of 202210634994.7 and an invention title of "In - vehicle Glass and Its Manufacturing Method and Intelligent Connected Vehicle", which was filed with the China National Intellectual Property Administration on June 7, 2022, and incorporates the entire content thereof by reference into this application.

[0002] The present invention relates to in - vehicle glass, its manufacturing method, and intelligent connected vehicles, and belongs to the technical field of intelligent vehicles and their components.

Background Art

[0003] With the development of new intelligent connected vehicles, large - scale single - pane glass with an ultimate exterior shape is being used, and the space outside the vehicle where an automobile antenna for supporting functional applications such as in - vehicle charging, communication, and positioning can be mounted is greatly compressed. According to the plans of existing finished - product manufacturers, antennas for realizing these functions have all begun to be transferred inside the vehicle. Among them, directly fixing the antenna to the glass at its mounting position is a solution for operating the antenna in a normal state. In this solution, usually, a mounting bracket is used as a bridge between the antenna and the glass. First, the bracket is fixed to the glass with an adhesive, and then the antenna is fastened to the bracket. Also, the antenna may be directly adhered to the glass.

[0004] Currently, the method of adhering the antenna to the glass with an adhesive does not consider the material characteristics of the adhesive itself, or its characteristics have not been fully studied. Therefore, whether the antenna is fixed with a bracket as a bridge or directly adhered to the glass, it will have a great impact on the performance of the antenna. Research has found that if the adhesive is not properly used, the gain of the antenna will be reduced by 0.5 dB to 1.5 dB or more.

[0005] Therefore, providing novel automotive glass, a method for manufacturing the same, and intelligent connected vehicles is an urgent technological challenge that needs to be addressed in this field. [Overview of the project] [Problems that the invention aims to solve]

[0006] This invention was made to solve the above-mentioned drawbacks and shortcomings, and one of its objectives is to provide automotive glass.

[0007] Another object of the present invention is to provide a method for manufacturing the above-described automotive glass.

[0008] Another object of the present invention is to provide an intelligent connected vehicle that includes at least the above-described in-vehicle glass. [Means for solving the problem]

[0009] To achieve the above objective, the present invention provides an automotive glass that, on one side, includes glass, an adhesive layer, and an antenna module bonded to the glass by the adhesive layer, or further includes a bracket bonded to the glass by the adhesive layer and to which the antenna module is attached, characterized in that the adhesive layer is distributed in the form of short lines in the edge region of the bottom surface of the antenna module or bracket.

[0010] In the present invention, the bottom surface is the surface that is adhered to the glass of the antenna module or bracket.

[0011] In one specific embodiment of the above-mentioned in-vehicle glass of the present invention, the short line includes a line segment or a short arc.

[0012] In the present invention, the form of the short lines can be determined by the shape of the base surface. For example, if the base surface is circular or elliptical, the short lines may be distributed in the form of short arc lines in the edge region of the base surface of the antenna module or bracket. If the base surface is square or rectangular, the short lines may be distributed in the form of line segments in the edge region of the base surface of the antenna module or bracket.

[0013] In one specific embodiment of the above-mentioned automotive glass of the present invention, the adhesive layer is distributed around the bottom surface of the antenna module or bracket.

[0014] As a specific embodiment of the above-mentioned automotive glass of the present invention, the adhesive layer comprises four linear adhesive lumps, each of which is distributed in the edge region of each side of the bottom surface.

[0015] In one specific embodiment of the above-mentioned in-vehicle glass of the present invention, the length of the adhesive mass is smaller than the side length of the bottom surface.

[0016] In one specific embodiment of the above-mentioned automotive glass of the present invention, the length of the adhesive mass is 40% to 30% of the side length, and the width of the adhesive mass is 15 mm or less (based on the maximum outer diameter of the opening surface of the antenna module or the edge of the bracket).

[0017] In the present invention, the lengths of the four adhesive lumps may be exactly the same or different, but preferably the lengths of the four adhesive lumps may be exactly the same.

[0018] In a specific embodiment of the above-mentioned automotive glass of the present invention, the adhesive layer comprises adhesive lumps in the form of four right-angle bent-line structures, each of the four adhesive lumps in the form of right-angle bent-line structures distributed in the edge regions of the four corners of the bottom surface, and any two adjacent adhesive lumps are not completely connected.

[0019] In one specific embodiment of the above-mentioned automotive glass of the present invention, the total length of the four adhesive blocks in the form of the right-angle bent-line structure is 30% to 40% of the total circumference of the bottom surface, and its width is 15 mm or less.

[0020] In the present invention, the lengths of two line segments in any one of the four adhesive lumps in the form of the right-angle bent-line structure may be exactly the same or different, but preferably the lengths of the two line segments in any one of the adhesive lumps are exactly the same.

[0021] The lengths of the line segments of the four adhesive lumps in the form of the right-angled bent-line structure may be exactly the same or they may be different, but preferably the lengths of the line segments of the four adhesive lumps are all exactly the same.

[0022] As a specific embodiment of the above-mentioned automotive glass of the present invention, the adhesive layer comprises four 90 o The adhesive lumps are in the form of a rounded corner bent line structure, and each of the four adhesive lumps in the form of a 90° rounded corner bent line structure is distributed in the edge regions of the four corners of the bottom surface.

[0023] As a specific embodiment of the above-mentioned automotive glass of the present invention, the total length of the adhesive mass in the form of the four 90° corner rounded bent-line structures is 30% to 40% of the total circumference of the bottom surface, and its width is 15 mm or less.

[0024] In the present invention, the lengths of two line segments in any one of the four adhesive lumps in the form of the 90° rounded corner bent line structure may be exactly the same or different, but preferably the lengths of the two line segments in any one of the adhesive lumps are exactly the same.

[0025] The lengths of the line segments of the four adhesive lumps in the form of the 90° rounded corner bent line structure may be exactly the same or different, but preferably the lengths of the line segments of the four adhesive lumps are all exactly the same.

[0026] As a specific embodiment of the in-vehicle glass of the present invention, the adhesive coating for forming the adhesive layer includes one or a combination of a plurality of polyurethane, propylene resin, polycarbonate resin, ABS (acrylonitrile-butadiene-styrene) resin, and fluororesin.

[0027] In the present invention, both the glass and the antenna module are ordinary devices and can be reasonably selected and used according to actual needs.

[0028] In another aspect, the present invention provides a method for manufacturing the above in-vehicle glass, which includes applying an adhesive to an edge area of the bottom surface of an antenna module or a bracket by a dot coating method, adhering the bottom surface of the antenna module to the glass to obtain the in-vehicle glass, or adhering the bottom surface of the bracket to the glass and further attaching the antenna module to the bracket to obtain the in-vehicle glass.

[0029] As a specific embodiment of the manufacturing method of the present invention, the dot coating method is a multi-point coating method.

[0030] In some embodiments of the present invention, the dot coating method is a four-point coating method.

[0031] In the present invention, the "multi-point coating" is defined with respect to the "adhesive full-surface coating" method in the prior art. It means that, instead of the "adhesive full-surface coating" method, a suitable tool is used to apply the target adhesive in a form such as the above short line so that the applied adhesive layer covers only a part of the carrier surface when applying it to the carrier surface.

[0032] In yet another aspect, the present invention provides an intelligent connected vehicle including at least the above in-vehicle glass.

Advantages of the Invention

[0033] Compared to the conventional method of obtaining automotive glass by bonding an antenna module to glass by applying adhesive to the entire surface, the present invention changes the adhesive application method, specifically by bonding the antenna module or bracket to the glass by applying adhesive at four points, thereby significantly improving the gain of the antenna module in automotive glass according to the present invention within a certain frequency range. Specifically, in some specific embodiments of the present invention, the gain of the antenna module in automotive glass according to the present invention can be improved by up to approximately 1.5 dB in the frequency range of 1160 MHz to 1610 MHz.

[0034] To more clearly illustrate embodiments of the present invention or technical concepts in the prior art, the drawings required in the description of the embodiments will be briefly described below. The drawings in the following description are of some embodiments of the present invention, and it goes without saying that those skilled in the art can obtain other drawings based on these without any creative effort. [Brief explanation of the drawing]

[0035] [Figure 1] Schematic diagram of the adhesive layer structure formed by the four-point coating method in Example 1 of the present invention. [Figure 2] Schematic diagram of the simulation of the adhesive layer structure formed by the four-point coating method in Example 1 of the present invention. [Figure 3] Schematic diagram of the simulation of the adhesive layer structure formed by the four-point coating method in Example 2 of the present invention. [Figure 4] Schematic diagram of the adhesive layer structure formed by the full-surface adhesive application method in Comparative Example 1 [Figure 5] Schematic diagram of the overall mounting of the automotive glass according to Embodiment 1 of the present invention [Figure 6] Cross-sectional view AA in Figure 5 [Figure 7] Comparison graph of the gain performance of antenna modules in automotive glass according to Example 1 and Comparative Example 1 of the present invention within the frequency range of 1160MHz-1610MHz. [Figure 8]Comparison graph of the gain performance of antenna modules in automotive glass according to Example 1 and Comparative Example 1 of the present invention within the frequency range of 1160MHz-1610MHz. [Modes for carrying out the invention]

[0036] In the specification, claims, and drawings of the present invention, the term "includes" and any variation thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units expressly listed, and may include other steps or units not expressly listed or specific to those processes, methods, products, or apparatus.

[0037] In this invention, directions or positional relationships indicated by terms such as "up," "down," "inside," "outside," and "center" are based on the directions or positional relationships shown in the drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the shown devices, elements, or components to necessarily having a specific direction or being configured or operated in a specific direction.

[0038] Furthermore, some of the above terms may be used to express meanings other than those related to direction or position. For example, the term "above" may, in some cases, be used to express a dependency or connection. Those skilled in the art will be able to understand the specific meaning of these terms in the present invention depending on the specific situation.

[0039] To further clarify the object, technical concept and advantages of the present invention, the present invention will be described in more detail below with reference to the drawings and examples. The examples described below are not all examples of the present invention but are for illustrative purposes only and do not limit the scope of the present invention. Any other examples obtained by those skilled in the art without creative effort based on the examples of the present invention are all included within the scope of the present invention. Unless specific conditions are stated in the examples, the usual conditions or conditions recommended by the manufacturer are followed. Unless the manufacturer is specified for the reagents or equipment used, they are all commercially available common products.

[0040] (Example 1) This embodiment provides a method for manufacturing automotive glass, which includes the following specific steps.

[0041] (1) As shown in Figures 1 and 2, polyurethane adhesive is applied in a four-point application method to the edge regions of the four corners of the bottom surface that will be bonded to the glass of the antenna module, forming adhesive lumps in the form of four right-angle bent-line structures at the edge regions of the four corners of the bottom surface.

[0042] Here, the antenna module has a weight of approximately 0.7 kg, a size of approximately 70 x 70 mm, and requires a tensile force of more than 200 N. The width of the adhesive applied in step (1) is less than 8 mm, and the length of the right-angle bent wire structure is less than 25 mm.

[0043] (2) The bottom surface of the antenna module is bonded to the glass via an adhesive layer formed by the adhesive to obtain the vehicle-mounted glass. Here, a schematic diagram of the vehicle-mounted glass is shown in Figures 5 and 6, and as can be seen from Figures 5 and 6, the vehicle-mounted glass includes glass 2, an adhesive layer 3 and an antenna module 1, and the antenna module 1 is bonded to glass 2 by the adhesive layer 3 which includes adhesive lumps in the form of four right-angle bent-line structures distributed in the edge regions of the four corners of the bottom surface.

[0044] (Example 2)

[0045] This embodiment provides a method for manufacturing automotive glass, which includes the following specific steps.

[0046] (1) As shown in Figure 3, polyurethane adhesive is applied to the edge region of each side of the bottom surface that will be bonded to the glass of the antenna module using a four-point application method, forming four linear-shaped adhesive clumps in the edge region of each side of the bottom surface.

[0047] Here, the antenna module has a weight of approximately 0.7 kg, a size of approximately 70 x 70 mm, and requires a tensile force of more than 200 N. The adhesive applied in step (1) has a width of less than 8 mm and a length of less than 25 mm.

[0048] (2) The bottom surface of the antenna module is bonded to the glass via an adhesive layer formed by the adhesive to obtain the vehicle-mounted glass. Here, the vehicle-mounted glass includes glass, an adhesive layer and an antenna module, and the antenna module is bonded to the glass by an adhesive layer which includes four linear adhesive lumps distributed in the edge regions of each side of the bottom surface.

[0049] (Comparative Example 1) This comparative example provides a method for manufacturing automotive glass, which includes the following specific steps.

[0050] (1) As shown in Figure 4, the adhesive is applied to the bottom surface of the antenna module that will be bonded to the glass using a full-surface adhesive application method.

[0051] Here, the antenna module has a weight of approximately 0.7 kg, a size of approximately 70 x 70 mm, and requires a tensile force of more than 200 N. The width and length of the adhesive applied in step (1) are both 70 mm.

[0052] (2) The bottom surface of the antenna module is bonded to the glass via an adhesive layer formed by the adhesive to obtain the vehicle-mounted glass. Here, the vehicle-mounted glass includes glass, an adhesive layer, and an antenna module, and the antenna module is bonded to the glass by the adhesive layer.

[0053] (Test Example 1) This test example tests the gain performance of the antenna module in automotive glass according to Example 1 and Comparative Example 1 of the present invention within the frequency range of 1160 MHz to 1610 MHz using conventional methods in this field, and the obtained test results are shown in Figures 7 and 8, respectively.

[0054] As is clear from Figures 7 and 8, compared to Comparative Example 1, which employs a method of bonding the antenna module to the glass by applying adhesive to the entire surface, in Example 1 of the present invention, by changing the adhesive application method, that is, by bonding the antenna module to the glass with four-point application, the gain of the antenna module on the resulting automotive glass is significantly improved within the frequency range of 1160MHz-1610MHz, and can be improved by up to approximately 1.5dB.

[0055] (Test Example 2) This test example tests the adhesive strength between the antenna module and the glass in automotive glass according to Example 1, Example 2, and Comparative Example 1 of the present invention, respectively. The test was performed twice for each piece of automotive glass using a standard conventional tension meter, under test environmental conditions of 22.6°C and 58.3% RH.

[0056] The adhesive strength data obtained in this test example is shown in Table 1 below.

[0057] [Table 1]

[0058] From the experimental data in Table 1 above, it can be seen that the adhesive strength between the antenna module and the glass in the automotive glass according to Example 1, Example 2, and Comparative Example 1 of the present invention all exceeds 200 N. Compared to the conventional method of obtaining automotive glass by bonding the antenna module to the glass with adhesive applied to the entire surface, the examples of the present invention bond the antenna module to the glass with adhesive applied at four points, but the adhesive strength between the antenna module and the glass still meets the requirements.

[0059] As described above, compared to the conventional method of obtaining automotive glass by bonding the antenna module to the glass with adhesive applied to the entire surface, the embodiment of the present invention modifies the adhesive application method, specifically by bonding the antenna module or bracket to the glass with four-point application. This significantly improves the gain of the antenna module in the automotive glass according to the embodiment of the present invention within a certain frequency range, while also ensuring an adhesive strength exceeding 200N.

[0060] The above are merely specific embodiments of the present invention and do not limit the scope of the invention; therefore, substitution of equivalents, or modifications and changes to equivalents based on the scope of protection of the present invention, are all included within the scope of this patent. Furthermore, the technical features of the present invention can be freely combined and used with respect to each other, between technical features and technical inventions, and between technical inventions. [Explanation of Symbols]

[0061] 1 Antenna module 2 Glass 3 Adhesive layer

Claims

1. An automotive glass comprising glass, an adhesive layer, and an antenna module bonded to the glass by the adhesive layer, or further comprising a bracket bonded to the glass by the adhesive layer and to which the antenna module is attached, The adhesive layer is distributed in the form of short lines in the edge region of the bottom surface of the antenna module or bracket. The adhesive layer is distributed around the bottom surface of the antenna module or bracket. The adhesive layer includes four linear adhesive lumps, The four adhesive lumps are each distributed in the edge region of each side of the bottom surface, The length of the adhesive mass is 40% or less and 30% or more of the side length. The vehicle glass is characterized in that the width of the adhesive mass is 15 mm or less.

2. An automotive glass comprising glass, an adhesive layer, and an antenna module bonded to the glass by the adhesive layer, or further comprising a bracket bonded to the glass by the adhesive layer and to which the antenna module is attached, The adhesive layer is distributed in the form of short lines in the edge region of the bottom surface of the antenna module or bracket. The adhesive layer is distributed around the bottom surface of the antenna module or bracket. The adhesive layer includes adhesive lumps in the form of four right-angle bent-line structures, The four adhesive lumps are distributed in the edge regions of the four corners of the bottom surface, and Any two of the aforementioned adhesive lumps are not completely connected, The total length of the four adhesive blocks in the form of the right-angle bent-line structure is 30% or more and 40% or less of the total circumference of the bottom surface. The vehicle glass is characterized in that the width of the adhesive mass is 15 mm or less.

3. An automotive glass comprising glass, an adhesive layer, and an antenna module bonded to the glass by the adhesive layer, or further comprising a bracket bonded to the glass by the adhesive layer and to which the antenna module is attached, The adhesive layer is distributed in the form of short lines in the edge region of the bottom surface of the antenna module or bracket. The adhesive layer is distributed around the bottom surface of the antenna module or bracket. The adhesive layer comprises adhesive lumps in the form of four 90° angled rounded bent-line structures, The four adhesive lumps are each distributed in the edge regions of the four corners of the bottom surface. The total length of the four adhesive blocks in the form of the 90° rounded corner structure is 30% or more and 40% or less of the total circumference of the bottom surface. The vehicle glass is characterized in that the width of the adhesive mass is 15 mm or less.

4. The automotive glass according to any one of claims 1 to 3, characterized in that the adhesive for forming the adhesive layer includes one or more combinations of polyurethane, propylene resin, polycarbonate resin, ABS resin, and fluororesin.

5. A method for manufacturing automotive glass, comprising glass, an adhesive layer, and an antenna module bonded to the glass by the adhesive layer, or further comprising a bracket bonded to the glass by the adhesive layer and to which the antenna module is attached, The adhesive is applied to the edge area of ​​the bottom surface of the antenna module or bracket using a spot application method. This includes bonding the bottom surface of the antenna module to the glass to obtain the vehicle-mounted glass, or bonding the bottom surface of the bracket to the glass, and further attaching the antenna module to the bracket to obtain the vehicle-mounted glass. The adhesive layer is distributed in the form of short lines in the edge region of the bottom surface of the antenna module or bracket. The adhesive layer is distributed around the bottom surface of the antenna module or bracket. The adhesive layer includes four linear adhesive lumps, The four adhesive lumps are each distributed in the edge region of each side of the bottom surface, The length of the adhesive mass is 40% or less and 30% or more of the side length. A method for manufacturing automotive glass, characterized in that the width of the adhesive mass is 15 mm or less.

6. The manufacturing method according to claim 5, characterized in that the dot coating method is a multi-dot coating method.

7. Including at least the glass in the vehicle, The vehicle-mounted glass includes glass, an adhesive layer, and an antenna module bonded to the glass by the adhesive layer, or further includes a bracket bonded to the glass by the adhesive layer and to which the antenna module is attached, wherein the adhesive layer is distributed in the form of short lines in the edge region of the bottom surface of the antenna module or bracket. The adhesive layer is distributed around the bottom surface of the antenna module or bracket. The adhesive layer includes four linear adhesive lumps, The four adhesive lumps are each distributed in the edge region of each side of the bottom surface, The length of the adhesive mass is 40% or less and 30% or more of the side length. An intelligent connected vehicle characterized in that the width of the adhesive mass is 15 mm or less.

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