In-vehicle glass, its manufacturing method, 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 the application number 202210634994.7 and the 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 appearance is used, and the space outside the vehicle where automotive antennas can be mounted for functional applications such as in - vehicle charging, communication, and positioning is highly 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 attached to the bracket. Also, the antenna can 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 properties of the adhesive itself, or its properties have not been sufficiently studied. Therefore, whether the antenna is fixed with a bracket as a bridge or directly adhered and fixed to the glass, it will have a great impact on the performance of the antenna. Research has found that if the adhesive is not used properly, the gain of the antenna will be reduced by 0.5 dB to 1.5 dB or more.

[0005] Therefore, providing a novel in-vehicle glass, a manufacturing method thereof, and an intelligent connected vehicle has become a technical problem that needs to be urgently solved in this field.

Summary of the Invention

Problems to be Solved by the Invention

[0006] The present invention is made to solve the above-mentioned drawbacks and deficiencies, and one of its purposes is to provide an in-vehicle glass.

[0007] Another purpose of the present invention is to provide a manufacturing method of the above-mentioned in-vehicle glass.

[0008] Still another purpose of the present invention is to provide an intelligent connected vehicle including at least the above-mentioned in-vehicle glass.

Means for Solving the Problems

[0009] To achieve the above object, on one side, the present invention includes a glass, an adhesive layer, and an antenna module adhered to the glass by the adhesive layer, or further includes a bracket adhered to the glass by the adhesive layer and to which the antenna module is fastened, and the in-vehicle glass is 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 the bracket.

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

[0011] As a specific embodiment of the above in-vehicle glass of the present invention, the short lines include line segments or short arc lines.

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

[0013] As a specific embodiment of the in-vehicle 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 in-vehicle glass of the present invention, the adhesive layer includes four adhesive blocks in the form of line segments, and the four adhesive blocks are respectively distributed in the edge regions of the respective sides of the bottom surface.

[0015] As a specific embodiment of the in-vehicle glass of the present invention, the length of the adhesive block is smaller than the side length of the bottom surface.

[0016] As a specific embodiment of the in-vehicle glass of the present invention, the length of the adhesive block is 40% or less and 30% or more of the side length, and the width of the adhesive block 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 blocks may be completely the same or different, but preferably, the lengths of the four adhesive blocks may be completely the same.

[0018] As a specific embodiment of the in-vehicle glass of the present invention, the adhesive layer includes four adhesive blocks in the form of right-angled broken line structures, and the four adhesive blocks in the form of right-angled broken line structures are respectively distributed in the edge regions of the four corners of the bottom surface, and any two adjacent adhesive blocks are not completely connected.

[0019] As a specific embodiment of the in-vehicle glass of the present invention, the total length of the four adhesive blocks in the form of the right-angled broken line structure is 30% or more and 40% or less of the total perimeter of the bottom surface, and its width is 15 mm or less.

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

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

[0022] As a specific embodiment of the in-vehicle glass of the present invention, the adhesive layer includes four adhesive blocks in the form of a 90 o ° rounded broken line structure, and the four adhesive blocks in the form of the 90° rounded broken line structure are respectively distributed in the edge regions at the four corners of the bottom surface.

[0023] As a specific embodiment of the in-vehicle glass of the present invention, the total length of the four adhesive blocks in the form of the 90° rounded broken line structure is 30% or more and 40% or less of the total perimeter of the bottom surface, and its width is 15 mm or less.

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

[0025] The lengths of the line segments of the four adhesive blocks in the form of the 90° rounded broken line structure may be exactly the same or different, but preferably, the lengths of the line segments of the four adhesive blocks 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 region of the bottom surface of the antenna module or the 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 above 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 and is applied 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 with the prior art method of obtaining an in-vehicle glass by adhering an antenna module to glass by applying an adhesive over the entire surface, the present invention changes the adhesive application method, that is, by applying the adhesive at four points to adhere the antenna module or bracket to the glass, thereby significantly improving the gain of the antenna module in the in-vehicle glass according to the present invention within a certain frequency range. Specifically, in some specific embodiments of the present invention, within the frequency range of 1160 MHz - 1610 MHz, the gain of the antenna module in the in-vehicle glass according to the present invention can be improved by up to about 1.5 dB.

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

Brief Description of the Drawings

[0035]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0036] In the specification, claims and the above drawings of the present invention, the term "comprising" and all its variations are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, and may include other steps or units not explicitly listed or inherent to those processes, methods, products or devices.

[0037] In the present invention, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "middle", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly for better explaining the present invention and its embodiments, and are not for limiting that the indicated device, element or component must have a specific orientation or be configured or operated in a specific orientation.

[0038] In addition, some of the above terms may be used to represent other meanings in addition to representing the orientation or positional relationship. For example, the term "upper" may be used to represent a certain dependency or connection relationship in some cases. Those skilled in the art can understand the specific meaning of these terms in the present invention according to the specific situation.

[0039] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in more detail below with reference to the drawings and embodiments. The embodiments described below are only some but not all of the embodiments of the present invention. They are for the purpose of explaining the present invention and do not limit the scope of the present invention. Other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention are all included in the protection scope of the present invention. For those not specified with specific conditions in the embodiments, the normal conditions or the conditions recommended by the manufacturer shall be followed. For the reagents or equipment used, those not specified by the manufacturer are all common products available commercially.

[0040] (Example 1) This example provides a manufacturing method of in-vehicle glass including the following specific steps.

[0041] (1) As shown in FIGS. 1 and 2, in a four-point coating method, the polyurethane adhesive is respectively applied to the edge regions at the four corners of the bottom surface adhered to the glass of the antenna module to form adhesive blocks in the form of four right-angled fold line structures in the edge regions at the four corners of the bottom surface.

[0042] Here, the antenna module weighs about 0.7 kg, has a size of about 70×70 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-angled fold line structure is less than 25 mm.

[0043] (2) The bottom surface of the antenna module is adhered to the glass through the adhesive layer formed by the adhesive to obtain the in-vehicle glass. Here, the mounting schematic diagram of the in-vehicle glass is shown in FIGS. 5 and 6. As can be seen from FIGS. 5 and 6, the in-vehicle glass includes glass 2, an adhesive layer 3, and an antenna module 1. The antenna module 1 is adhered to the glass 2 by the adhesive layer 3 including four adhesive blocks in the form of right-angled fold line structures respectively distributed in the edge regions at the four corners of the bottom surface.

[0044] (Example 2)

[0045] This embodiment provides a method for manufacturing an in-vehicle glass, including the following specific steps.

[0046] (1) As shown in Figure 3, in a four-point application method, apply polyurethane adhesive to the edge regions of each side of the bottom surface adhered to the glass of the antenna module respectively, and form four linear adhesive masses in the edge regions of each side of the bottom surface.

[0047] Here, the antenna module weighs about 0.7 kg, has a size of about 70×70 mm, and requires a tensile force exceeding 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) Adhere the bottom surface of the antenna module to the glass through the adhesive layer formed by the adhesive to obtain the in-vehicle glass. Here, the in-vehicle glass includes glass, an adhesive layer, and an antenna module, and the antenna module is adhered to the glass by an adhesive layer including four linear adhesive masses respectively distributed in the edge regions of each side of the bottom surface.

[0049] (Comparative Example 1) This comparative example provides a method for manufacturing an in-vehicle glass, including the following specific steps.

[0050] (1) As shown in Figure 4, in an adhesive full-surface application method, apply the adhesive to the bottom surface adhered to the glass of the antenna module.

[0051] Here, the antenna module weighs about 0.7 kg, has a size of about 70×70 mm, and requires a tensile force exceeding 200 N. The width and length of the adhesive applied in step (1) are both 70 mm.

[0052] (2) Adhere the bottom surface of the antenna module to the glass through the adhesive layer formed by the adhesive, thereby obtaining the in-vehicle glass. Here, the in-vehicle glass includes the glass, the adhesive layer, and the antenna module, and the antenna module is adhered to the glass by the adhesive layer.

[0053] (Test Example 1) In this test example, the gain performance of the antenna module in the in-vehicle glass according to Example 1 and Comparative Example 1 of the present invention within the frequency range of 1160 MHz - 1610 MHz was tested by the conventional general method in this field, and the obtained test results are shown in FIGS. 7 and 8 respectively.

[0054] As is clear from FIGS. 7 and 8, compared with Comparative Example 1 that adopted the method of adhering the antenna module to the glass by applying the adhesive over the entire surface, in Example 1 of the present invention, the adhesive application method was changed, that is, the antenna module was adhered to the glass by four-point application. As a result, within the frequency range of 1160 MHz - 1610 MHz, the gain of the antenna module in the obtained in-vehicle glass was significantly improved, and could be improved by up to about 1.5 dB.

[0055] (Test Example 2) This test example tests the adhesion strength between the antenna module and the glass in the in-vehicle glass according to Example 1, Example 2, and Comparative Example 1 of the present invention respectively. The test was conducted twice for each in-vehicle glass using a normal conventional tensiometer, and the test environmental conditions were a temperature of 22.6 °C and a humidity of 58.3% RH.

[0056] The adhesion 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, the adhesion strength between the antenna module and the glass in the in-vehicle glass according to Example 1, Example 2, and Comparative Example 1 of the present invention all exceeded 200 N. Compared with the prior art method of obtaining in-vehicle glass by adhering the antenna module to the glass with full-surface application of the adhesive, in the examples of the present invention, the antenna module is adhered to the glass by four-point application, but it can be seen that the adhesion strength between the antenna module and the glass still meets the requirements.

[0059] As described above, compared with the prior art method of obtaining in-vehicle glass by adhering the antenna module to the glass with full-surface application of the adhesive, in the examples of the present invention, the adhesive application method is changed, that is, the antenna module or the bracket is adhered to the glass by four-point application. Thus, within a certain frequency range, the gain of the antenna module in the in-vehicle glass according to the examples of the present invention can be significantly improved, and an adhesion strength exceeding 200 N can be ensured.

[0060] The above are only specific examples of the present invention and do not limit the scope of the invention. Therefore, any substitution of equivalents, or equivalent modifications and changes based on the protection scope of the present invention are all included in the scope of this patent. In addition, the technical features in the present invention, between technical features, between technical features and technical inventions, and between technical inventions can all be freely combined and used.

Explanation of Reference Numerals

[0061] 1 Antenna module 2 Glass 3 Adhesive layer

Claims

1. An in-vehicle glass including 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 having the antenna module attached thereto, wherein the adhesive layer is distributed in an edge region of a bottom surface of the antenna module or the bracket in a form of short lines. In-vehicle glass.

2. The in-vehicle glass according to claim 1, wherein the short lines include line segments or short arc lines.

3. The in-vehicle glass according to claim 1, wherein the adhesive layer is distributed around a bottom surface of the antenna module or the bracket.

4. The in-vehicle glass according to claim 3, wherein the adhesive layer includes four adhesive blocks in a form of line segments, and the four adhesive blocks are respectively distributed in edge regions of respective sides of the bottom surface.

5. The in-vehicle glass according to claim 4, wherein a length of the adhesive block is smaller than a side length of the bottom surface.

6. The in-vehicle glass according to claim 5, wherein the length of the adhesive block is 40% or less and 30% or more of the side length, and a width of the adhesive block is 15 mm or less.

7. The in-vehicle glass according to claim 3, wherein the adhesive layer includes four adhesive blocks in a form of right-angled broken line structures, the four adhesive blocks are respectively distributed in edge regions of four corners of the bottom surface, and any two of the adhesive blocks are not completely connected.

8. The in-vehicle glass according to claim 7, wherein a total length of the four adhesive blocks in the form of right-angled broken line structures is 30% or more and 40% or less of a total perimeter of the bottom surface, and a width thereof is 15 mm or less.

9. The in-vehicle glass according to claim 3, wherein the adhesive layer includes four adhesive blocks in a form of 90° angled rounded broken line structures, and the four adhesive blocks are respectively distributed in edge regions of four corners of the bottom surface.

10. The in-vehicle glass according to claim 9, wherein a total length of the four adhesive blocks in the form of 90° angled rounded broken line structures is 30% or more and 40% or less of a total perimeter of the bottom surface, and a width thereof is 15 mm or less.

11. The adhesive for forming the adhesive layer includes one or a combination of a plurality of types of polyurethane, propylene resin, polycarbonate resin, ABS resin, and fluororesin. ​ ​ ​ ​ ​ ​ ​ ​ ​ The in-vehicle glass according to any one of claims 1 to 10.

12. A method for manufacturing an in-vehicle glass according to any one of claims 1 to 11, applying an adhesive to an edge region of the bottom surface of an antenna module or a bracket by a dot application 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, characterized by including a method for manufacturing an in-vehicle glass.

13. The manufacturing method according to claim 12, characterized in that the dot application method is a multi-point application method. The manufacturing method according to claim 12.

14. An intelligent connected vehicle, characterized by including at least the in-vehicle glass according to any one of claims 1 to 11. ​

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